1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * This is the new netlink-based wireless configuration interface.
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2014 Intel Mobile Communications GmbH
7 * Copyright 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2022 Intel Corporation
9 */
10
11 #include <linux/if.h>
12 #include <linux/module.h>
13 #include <linux/err.h>
14 #include <linux/slab.h>
15 #include <linux/list.h>
16 #include <linux/if_ether.h>
17 #include <linux/ieee80211.h>
18 #include <linux/nl80211.h>
19 #include <linux/rtnetlink.h>
20 #include <linux/netlink.h>
21 #include <linux/nospec.h>
22 #include <linux/etherdevice.h>
23 #include <linux/if_vlan.h>
24 #include <net/net_namespace.h>
25 #include <net/genetlink.h>
26 #include <net/cfg80211.h>
27 #include <net/sock.h>
28 #include <net/inet_connection_sock.h>
29 #include "core.h"
30 #include "nl80211.h"
31 #include "reg.h"
32 #include "rdev-ops.h"
33
34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
35 struct genl_info *info,
36 struct cfg80211_crypto_settings *settings,
37 int cipher_limit);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam;
41
42 /* multicast groups */
43 enum nl80211_multicast_groups {
44 NL80211_MCGRP_CONFIG,
45 NL80211_MCGRP_SCAN,
46 NL80211_MCGRP_REGULATORY,
47 NL80211_MCGRP_MLME,
48 NL80211_MCGRP_VENDOR,
49 NL80211_MCGRP_NAN,
50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
51 };
52
53 static const struct genl_multicast_group nl80211_mcgrps[] = {
54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
60 #ifdef CONFIG_NL80211_TESTMODE
61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
62 #endif
63 };
64
65 /* returns ERR_PTR values */
66 static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct cfg80211_registered_device * rdev,struct net * netns,struct nlattr ** attrs)67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
68 struct net *netns, struct nlattr **attrs)
69 {
70 struct wireless_dev *result = NULL;
71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
73 u64 wdev_id = 0;
74 int wiphy_idx = -1;
75 int ifidx = -1;
76
77 if (!have_ifidx && !have_wdev_id)
78 return ERR_PTR(-EINVAL);
79
80 if (have_ifidx)
81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
82 if (have_wdev_id) {
83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
84 wiphy_idx = wdev_id >> 32;
85 }
86
87 if (rdev) {
88 struct wireless_dev *wdev;
89
90 lockdep_assert_held(&rdev->wiphy.mtx);
91
92 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
93 if (have_ifidx && wdev->netdev &&
94 wdev->netdev->ifindex == ifidx) {
95 result = wdev;
96 break;
97 }
98 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
99 result = wdev;
100 break;
101 }
102 }
103
104 return result ?: ERR_PTR(-ENODEV);
105 }
106
107 ASSERT_RTNL();
108
109 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
110 struct wireless_dev *wdev;
111
112 if (wiphy_net(&rdev->wiphy) != netns)
113 continue;
114
115 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
116 continue;
117
118 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
119 if (have_ifidx && wdev->netdev &&
120 wdev->netdev->ifindex == ifidx) {
121 result = wdev;
122 break;
123 }
124 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
125 result = wdev;
126 break;
127 }
128 }
129
130 if (result)
131 break;
132 }
133
134 if (result)
135 return result;
136 return ERR_PTR(-ENODEV);
137 }
138
139 static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net * netns,struct nlattr ** attrs)140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
141 {
142 struct cfg80211_registered_device *rdev = NULL, *tmp;
143 struct net_device *netdev;
144
145 ASSERT_RTNL();
146
147 if (!attrs[NL80211_ATTR_WIPHY] &&
148 !attrs[NL80211_ATTR_IFINDEX] &&
149 !attrs[NL80211_ATTR_WDEV])
150 return ERR_PTR(-EINVAL);
151
152 if (attrs[NL80211_ATTR_WIPHY])
153 rdev = cfg80211_rdev_by_wiphy_idx(
154 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
155
156 if (attrs[NL80211_ATTR_WDEV]) {
157 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
158 struct wireless_dev *wdev;
159 bool found = false;
160
161 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
162 if (tmp) {
163 /* make sure wdev exists */
164 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
165 if (wdev->identifier != (u32)wdev_id)
166 continue;
167 found = true;
168 break;
169 }
170
171 if (!found)
172 tmp = NULL;
173
174 if (rdev && tmp != rdev)
175 return ERR_PTR(-EINVAL);
176 rdev = tmp;
177 }
178 }
179
180 if (attrs[NL80211_ATTR_IFINDEX]) {
181 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
182
183 netdev = __dev_get_by_index(netns, ifindex);
184 if (netdev) {
185 if (netdev->ieee80211_ptr)
186 tmp = wiphy_to_rdev(
187 netdev->ieee80211_ptr->wiphy);
188 else
189 tmp = NULL;
190
191 /* not wireless device -- return error */
192 if (!tmp)
193 return ERR_PTR(-EINVAL);
194
195 /* mismatch -- return error */
196 if (rdev && tmp != rdev)
197 return ERR_PTR(-EINVAL);
198
199 rdev = tmp;
200 }
201 }
202
203 if (!rdev)
204 return ERR_PTR(-ENODEV);
205
206 if (netns != wiphy_net(&rdev->wiphy))
207 return ERR_PTR(-ENODEV);
208
209 return rdev;
210 }
211
212 /*
213 * This function returns a pointer to the driver
214 * that the genl_info item that is passed refers to.
215 *
216 * The result of this can be a PTR_ERR and hence must
217 * be checked with IS_ERR() for errors.
218 */
219 static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net * netns,struct genl_info * info)220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
221 {
222 return __cfg80211_rdev_from_attrs(netns, info->attrs);
223 }
224
validate_beacon_head(const struct nlattr * attr,struct netlink_ext_ack * extack)225 static int validate_beacon_head(const struct nlattr *attr,
226 struct netlink_ext_ack *extack)
227 {
228 const u8 *data = nla_data(attr);
229 unsigned int len = nla_len(attr);
230 const struct element *elem;
231 const struct ieee80211_mgmt *mgmt = (void *)data;
232 unsigned int fixedlen, hdrlen;
233 bool s1g_bcn;
234
235 if (len < offsetofend(typeof(*mgmt), frame_control))
236 goto err;
237
238 s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
239 if (s1g_bcn) {
240 fixedlen = offsetof(struct ieee80211_ext,
241 u.s1g_beacon.variable);
242 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
243 } else {
244 fixedlen = offsetof(struct ieee80211_mgmt,
245 u.beacon.variable);
246 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
247 }
248
249 if (len < fixedlen)
250 goto err;
251
252 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
253 goto err;
254
255 data += fixedlen;
256 len -= fixedlen;
257
258 for_each_element(elem, data, len) {
259 /* nothing */
260 }
261
262 if (for_each_element_completed(elem, data, len))
263 return 0;
264
265 err:
266 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
267 return -EINVAL;
268 }
269
validate_ie_attr(const struct nlattr * attr,struct netlink_ext_ack * extack)270 static int validate_ie_attr(const struct nlattr *attr,
271 struct netlink_ext_ack *extack)
272 {
273 const u8 *data = nla_data(attr);
274 unsigned int len = nla_len(attr);
275 const struct element *elem;
276
277 for_each_element(elem, data, len) {
278 /* nothing */
279 }
280
281 if (for_each_element_completed(elem, data, len))
282 return 0;
283
284 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
285 return -EINVAL;
286 }
287
validate_he_capa(const struct nlattr * attr,struct netlink_ext_ack * extack)288 static int validate_he_capa(const struct nlattr *attr,
289 struct netlink_ext_ack *extack)
290 {
291 if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
292 return -EINVAL;
293
294 return 0;
295 }
296
297 /* policy for the attributes */
298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
299
300 static const struct nla_policy
301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
302 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
303 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
304 .len = U8_MAX },
305 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
306 .len = U8_MAX },
307 };
308
309 static const struct nla_policy
310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
311 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
312 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
313 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
314 NLA_POLICY_MAX(NLA_U8, 15),
315 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
316 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
317 NLA_POLICY_MAX(NLA_U8, 15),
318 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
319 NLA_POLICY_MAX(NLA_U8, 31),
320 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
321 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
322 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
323 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
324 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
325 [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
326 };
327
328 static const struct nla_policy
329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
330 [NL80211_PMSR_TYPE_FTM] =
331 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
332 };
333
334 static const struct nla_policy
335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
336 [NL80211_PMSR_REQ_ATTR_DATA] =
337 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
338 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
339 };
340
341 static const struct nla_policy
342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
343 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
344 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
345 [NL80211_PMSR_PEER_ATTR_REQ] =
346 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
347 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
348 };
349
350 static const struct nla_policy
351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
352 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
353 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
354 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
355 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
356 [NL80211_PMSR_ATTR_PEERS] =
357 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
358 };
359
360 static const struct nla_policy
361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
362 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
363 NLA_POLICY_RANGE(NLA_U8, 1, 20),
364 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
365 NLA_POLICY_RANGE(NLA_U8, 1, 20),
366 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
367 NLA_POLICY_RANGE(NLA_U8, 1, 20),
368 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
369 NLA_POLICY_EXACT_LEN(8),
370 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
371 NLA_POLICY_EXACT_LEN(8),
372 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
373 };
374
375 static const struct nla_policy
376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
377 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
378 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
379 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
380 };
381
382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
383 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
384 .len = NL80211_MAX_SUPP_RATES },
385 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
386 .len = NL80211_MAX_SUPP_HT_RATES },
387 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
388 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
389 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
390 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8,
391 NL80211_RATE_INFO_HE_GI_0_8,
392 NL80211_RATE_INFO_HE_GI_3_2),
393 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
394 NL80211_RATE_INFO_HE_1XLTF,
395 NL80211_RATE_INFO_HE_4XLTF),
396 };
397
398 static const struct nla_policy
399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
400 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
401 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
402 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
403 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
404 [NL80211_TID_CONFIG_ATTR_NOACK] =
405 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
406 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
407 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
408 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
409 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
410 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
411 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
412 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
413 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
414 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
415 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
416 [NL80211_TID_CONFIG_ATTR_TX_RATE] =
417 NLA_POLICY_NESTED(nl80211_txattr_policy),
418 };
419
420 static const struct nla_policy
421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
422 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
423 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
424 [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
425 NLA_POLICY_RANGE(NLA_BINARY,
426 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
427 IEEE80211_MAX_DATA_LEN),
428 };
429
430 static const struct nla_policy
431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
432 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
433 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
434 .len = IEEE80211_MAX_DATA_LEN }
435 };
436
437 static const struct nla_policy
438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
439 [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
440 [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
441 };
442
443 static const struct nla_policy
444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
445 [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
446 [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
447 };
448
449 static const struct nla_policy
450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
451 [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
452 [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
453 NLA_POLICY_MIN(NLA_U8, 1),
454 [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
455 [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
456 [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
457 };
458
459 static const struct nla_policy
460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
461 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
462 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
463 };
464
465 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
466 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
467 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
468 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
469 .len = 20-1 },
470 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
471
472 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
473 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
474 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
475 NL80211_EDMG_CHANNELS_MIN,
476 NL80211_EDMG_CHANNELS_MAX),
477 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
478 NL80211_EDMG_BW_CONFIG_MIN,
479 NL80211_EDMG_BW_CONFIG_MAX),
480
481 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
482 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
483 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
484 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
485
486 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
487 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
488 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
489 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
490 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
491 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
492
493 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
494 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
495 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
496
497 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
498 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
499
500 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
501 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
502 .len = WLAN_MAX_KEY_LEN },
503 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
504 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
505 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
506 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
507 [NL80211_ATTR_KEY_TYPE] =
508 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
509
510 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
511 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
512 [NL80211_ATTR_BEACON_HEAD] =
513 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
514 IEEE80211_MAX_DATA_LEN),
515 [NL80211_ATTR_BEACON_TAIL] =
516 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
517 IEEE80211_MAX_DATA_LEN),
518 [NL80211_ATTR_STA_AID] =
519 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
520 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
521 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
522 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
523 .len = NL80211_MAX_SUPP_RATES },
524 [NL80211_ATTR_STA_PLINK_ACTION] =
525 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
526 [NL80211_ATTR_STA_TX_POWER_SETTING] =
527 NLA_POLICY_RANGE(NLA_U8,
528 NL80211_TX_POWER_AUTOMATIC,
529 NL80211_TX_POWER_FIXED),
530 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
531 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
532 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
533 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
534 .len = IEEE80211_MAX_MESH_ID_LEN },
535 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
536
537 /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
538 [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
539 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
540
541 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
542 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
543 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
544 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
545 .len = NL80211_MAX_SUPP_RATES },
546 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
547
548 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
549 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
550
551 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
552
553 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
554 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
555 validate_ie_attr,
556 IEEE80211_MAX_DATA_LEN),
557 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
558 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
559
560 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
561 .len = IEEE80211_MAX_SSID_LEN },
562 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
563 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
564 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
565 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
566 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
567 NL80211_MFP_NO,
568 NL80211_MFP_OPTIONAL),
569 [NL80211_ATTR_STA_FLAGS2] =
570 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
571 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
572 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
573 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
574 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
575 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
576 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
577 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
578 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
579 [NL80211_ATTR_PID] = { .type = NLA_U32 },
580 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
581 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
582 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
583 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
584 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
585 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
586 .len = IEEE80211_MAX_DATA_LEN },
587 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
588 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
589 NL80211_PS_DISABLED,
590 NL80211_PS_ENABLED),
591 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
592 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
593 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
594 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
595 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
596 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
597 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
598 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
599 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
600 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
601 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
602 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
603 [NL80211_ATTR_STA_PLINK_STATE] =
604 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
605 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
606 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
607 [NL80211_ATTR_MESH_PEER_AID] =
608 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
609 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
610 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
611 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
612 [NL80211_ATTR_HIDDEN_SSID] =
613 NLA_POLICY_RANGE(NLA_U32,
614 NL80211_HIDDEN_SSID_NOT_IN_USE,
615 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
616 [NL80211_ATTR_IE_PROBE_RESP] =
617 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
618 IEEE80211_MAX_DATA_LEN),
619 [NL80211_ATTR_IE_ASSOC_RESP] =
620 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
621 IEEE80211_MAX_DATA_LEN),
622 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
623 [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
624 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
625 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
626 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
627 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
628 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
629 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
630 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
631 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
632 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
633 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
634 .len = IEEE80211_MAX_DATA_LEN },
635 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
636 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
637 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
638 .len = NL80211_HT_CAPABILITY_LEN
639 },
640 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
641 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
642 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
643 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
644 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
645
646 /* need to include at least Auth Transaction and Status Code */
647 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
648
649 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
650 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
651 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
652 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
653 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
654 NLA_POLICY_RANGE(NLA_U32,
655 NL80211_MESH_POWER_UNKNOWN + 1,
656 NL80211_MESH_POWER_MAX),
657 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
658 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
659 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
660 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
661 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
662 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
663 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
664 .len = NL80211_VHT_CAPABILITY_LEN,
665 },
666 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
667 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
668 .len = IEEE80211_MAX_DATA_LEN },
669 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
670 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
671 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
672 [NL80211_ATTR_PEER_AID] =
673 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
674 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
675 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
676 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
677 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
678 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
679 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
680 /*
681 * The value of the Length field of the Supported Operating
682 * Classes element is between 2 and 253.
683 */
684 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
685 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
686 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
687 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
688 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
689 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
690 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
691 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
692 IEEE80211_QOS_MAP_LEN_MIN,
693 IEEE80211_QOS_MAP_LEN_MAX),
694 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
695 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
696 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
697 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
698 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
699 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
700 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
701 [NL80211_ATTR_USER_PRIO] =
702 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
703 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
704 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
705 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
706 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
707 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
708 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
709 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
710 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
711 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
712 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
713 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
714 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
715 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
716 .len = VHT_MUMIMO_GROUPS_DATA_LEN
717 },
718 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
719 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
720 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
721 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
722 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
723 .len = FILS_MAX_KEK_LEN },
724 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
725 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
726 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
727 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
728 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
729 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
730 },
731 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
732 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
733 .len = FILS_ERP_MAX_USERNAME_LEN },
734 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
735 .len = FILS_ERP_MAX_REALM_LEN },
736 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
737 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
738 .len = FILS_ERP_MAX_RRK_LEN },
739 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
740 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
741 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
742 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
743 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
744
745 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
746 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
747 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
748 [NL80211_ATTR_HE_CAPABILITY] =
749 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
750 NL80211_HE_MAX_CAPABILITY_LEN),
751 [NL80211_ATTR_FTM_RESPONDER] =
752 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
753 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
754 [NL80211_ATTR_PEER_MEASUREMENTS] =
755 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
756 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
757 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
758 .len = SAE_PASSWORD_MAX_LEN },
759 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
760 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
761 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
762 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
763 [NL80211_ATTR_TID_CONFIG] =
764 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
765 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
766 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
767 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
768 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
769 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
770 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
771 [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
772 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
773 [NL80211_ATTR_FILS_DISCOVERY] =
774 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
775 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
776 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
777 [NL80211_ATTR_S1G_CAPABILITY] =
778 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
779 [NL80211_ATTR_S1G_CAPABILITY_MASK] =
780 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
781 [NL80211_ATTR_SAE_PWE] =
782 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
783 NL80211_SAE_PWE_BOTH),
784 [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
785 [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
786 [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
787 [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
788 [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
789 [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
790 [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
791 [NL80211_ATTR_MBSSID_CONFIG] =
792 NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
793 [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
794 [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
795 [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
796 [NL80211_ATTR_EHT_CAPABILITY] =
797 NLA_POLICY_RANGE(NLA_BINARY,
798 NL80211_EHT_MIN_CAPABILITY_LEN,
799 NL80211_EHT_MAX_CAPABILITY_LEN),
800 [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
801 [NL80211_ATTR_MLO_LINKS] =
802 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
803 [NL80211_ATTR_MLO_LINK_ID] =
804 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
805 [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
806 [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
807 [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
808 };
809
810 /* policy for the key attributes */
811 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
812 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
813 [NL80211_KEY_IDX] = { .type = NLA_U8 },
814 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
815 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
816 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
817 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
818 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
819 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
820 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
821 };
822
823 /* policy for the key default flags */
824 static const struct nla_policy
825 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
826 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
827 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
828 };
829
830 #ifdef CONFIG_PM
831 /* policy for WoWLAN attributes */
832 static const struct nla_policy
833 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
834 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
835 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
836 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
837 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
838 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
839 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
840 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
841 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
842 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
843 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
844 };
845
846 static const struct nla_policy
847 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
848 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
849 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
850 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
851 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
852 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
853 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
854 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
855 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
856 },
857 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
858 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
859 },
860 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
861 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
862 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
863 };
864 #endif /* CONFIG_PM */
865
866 /* policy for coalesce rule attributes */
867 static const struct nla_policy
868 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
869 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
870 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
871 NLA_POLICY_RANGE(NLA_U32,
872 NL80211_COALESCE_CONDITION_MATCH,
873 NL80211_COALESCE_CONDITION_NO_MATCH),
874 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
875 };
876
877 /* policy for GTK rekey offload attributes */
878 static const struct nla_policy
879 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
880 [NL80211_REKEY_DATA_KEK] = {
881 .type = NLA_BINARY,
882 .len = NL80211_KEK_EXT_LEN
883 },
884 [NL80211_REKEY_DATA_KCK] = {
885 .type = NLA_BINARY,
886 .len = NL80211_KCK_EXT_LEN
887 },
888 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
889 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
890 };
891
892 static const struct nla_policy
893 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
894 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
895 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
896 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
897 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
898 [NL80211_BAND_LC] = { .type = NLA_S32 },
899 };
900
901 static const struct nla_policy
902 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
903 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
904 .len = IEEE80211_MAX_SSID_LEN },
905 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
906 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
907 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
908 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
909 };
910
911 static const struct nla_policy
912 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
913 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
914 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
915 };
916
917 static const struct nla_policy
918 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
919 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
920 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
921 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
922 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
923 },
924 };
925
926 /* policy for NAN function attributes */
927 static const struct nla_policy
928 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
929 [NL80211_NAN_FUNC_TYPE] =
930 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
931 [NL80211_NAN_FUNC_SERVICE_ID] = {
932 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
933 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
934 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
935 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
936 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
937 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
938 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
939 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
940 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
941 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
942 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
943 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
944 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
945 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
946 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
947 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
948 };
949
950 /* policy for Service Response Filter attributes */
951 static const struct nla_policy
952 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
953 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
954 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
955 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
956 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
957 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
958 };
959
960 /* policy for packet pattern attributes */
961 static const struct nla_policy
962 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
963 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
964 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
965 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
966 };
967
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev,struct nlattr ** attrbuf)968 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
969 struct cfg80211_registered_device **rdev,
970 struct wireless_dev **wdev,
971 struct nlattr **attrbuf)
972 {
973 int err;
974
975 if (!cb->args[0]) {
976 struct nlattr **attrbuf_free = NULL;
977
978 if (!attrbuf) {
979 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
980 GFP_KERNEL);
981 if (!attrbuf)
982 return -ENOMEM;
983 attrbuf_free = attrbuf;
984 }
985
986 err = nlmsg_parse_deprecated(cb->nlh,
987 GENL_HDRLEN + nl80211_fam.hdrsize,
988 attrbuf, nl80211_fam.maxattr,
989 nl80211_policy, NULL);
990 if (err) {
991 kfree(attrbuf_free);
992 return err;
993 }
994
995 rtnl_lock();
996 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
997 attrbuf);
998 kfree(attrbuf_free);
999 if (IS_ERR(*wdev)) {
1000 rtnl_unlock();
1001 return PTR_ERR(*wdev);
1002 }
1003 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1004 mutex_lock(&(*rdev)->wiphy.mtx);
1005 rtnl_unlock();
1006 /* 0 is the first index - add 1 to parse only once */
1007 cb->args[0] = (*rdev)->wiphy_idx + 1;
1008 cb->args[1] = (*wdev)->identifier;
1009 } else {
1010 /* subtract the 1 again here */
1011 struct wiphy *wiphy;
1012 struct wireless_dev *tmp;
1013
1014 rtnl_lock();
1015 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1016 if (!wiphy) {
1017 rtnl_unlock();
1018 return -ENODEV;
1019 }
1020 *rdev = wiphy_to_rdev(wiphy);
1021 *wdev = NULL;
1022
1023 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1024 if (tmp->identifier == cb->args[1]) {
1025 *wdev = tmp;
1026 break;
1027 }
1028 }
1029
1030 if (!*wdev) {
1031 rtnl_unlock();
1032 return -ENODEV;
1033 }
1034 mutex_lock(&(*rdev)->wiphy.mtx);
1035 rtnl_unlock();
1036 }
1037
1038 return 0;
1039 }
1040
1041 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)1042 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1043 int flags, u8 cmd)
1044 {
1045 /* since there is no private header just add the generic one */
1046 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1047 }
1048
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)1049 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1050 const struct ieee80211_reg_rule *rule)
1051 {
1052 int j;
1053 struct nlattr *nl_wmm_rules =
1054 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1055
1056 if (!nl_wmm_rules)
1057 goto nla_put_failure;
1058
1059 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1060 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1061
1062 if (!nl_wmm_rule)
1063 goto nla_put_failure;
1064
1065 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1066 rule->wmm_rule.client[j].cw_min) ||
1067 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1068 rule->wmm_rule.client[j].cw_max) ||
1069 nla_put_u8(msg, NL80211_WMMR_AIFSN,
1070 rule->wmm_rule.client[j].aifsn) ||
1071 nla_put_u16(msg, NL80211_WMMR_TXOP,
1072 rule->wmm_rule.client[j].cot))
1073 goto nla_put_failure;
1074
1075 nla_nest_end(msg, nl_wmm_rule);
1076 }
1077 nla_nest_end(msg, nl_wmm_rules);
1078
1079 return 0;
1080
1081 nla_put_failure:
1082 return -ENOBUFS;
1083 }
1084
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)1085 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1086 struct ieee80211_channel *chan,
1087 bool large)
1088 {
1089 /* Some channels must be completely excluded from the
1090 * list to protect old user-space tools from breaking
1091 */
1092 if (!large && chan->flags &
1093 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1094 return 0;
1095 if (!large && chan->freq_offset)
1096 return 0;
1097
1098 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1099 chan->center_freq))
1100 goto nla_put_failure;
1101
1102 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1103 goto nla_put_failure;
1104
1105 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1106 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1107 goto nla_put_failure;
1108 if (chan->flags & IEEE80211_CHAN_NO_IR) {
1109 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1110 goto nla_put_failure;
1111 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1112 goto nla_put_failure;
1113 }
1114 if (chan->flags & IEEE80211_CHAN_RADAR) {
1115 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1116 goto nla_put_failure;
1117 if (large) {
1118 u32 time;
1119
1120 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1121
1122 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1123 chan->dfs_state))
1124 goto nla_put_failure;
1125 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1126 time))
1127 goto nla_put_failure;
1128 if (nla_put_u32(msg,
1129 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1130 chan->dfs_cac_ms))
1131 goto nla_put_failure;
1132 }
1133 }
1134
1135 if (large) {
1136 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1137 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1138 goto nla_put_failure;
1139 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1140 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1141 goto nla_put_failure;
1142 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1143 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1144 goto nla_put_failure;
1145 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1146 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1147 goto nla_put_failure;
1148 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1149 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1150 goto nla_put_failure;
1151 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1152 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1153 goto nla_put_failure;
1154 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1155 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1156 goto nla_put_failure;
1157 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1158 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1159 goto nla_put_failure;
1160 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1161 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1162 goto nla_put_failure;
1163 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1164 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1165 goto nla_put_failure;
1166 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1167 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1168 goto nla_put_failure;
1169 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1170 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1171 goto nla_put_failure;
1172 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1173 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1174 goto nla_put_failure;
1175 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1176 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1177 goto nla_put_failure;
1178 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1179 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1180 goto nla_put_failure;
1181 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1182 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1183 goto nla_put_failure;
1184 }
1185
1186 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1187 DBM_TO_MBM(chan->max_power)))
1188 goto nla_put_failure;
1189
1190 if (large) {
1191 const struct ieee80211_reg_rule *rule =
1192 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1193
1194 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1195 if (nl80211_msg_put_wmm_rules(msg, rule))
1196 goto nla_put_failure;
1197 }
1198 }
1199
1200 return 0;
1201
1202 nla_put_failure:
1203 return -ENOBUFS;
1204 }
1205
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)1206 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1207 struct cfg80211_txq_stats *txqstats,
1208 int attrtype)
1209 {
1210 struct nlattr *txqattr;
1211
1212 #define PUT_TXQVAL_U32(attr, memb) do { \
1213 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
1214 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1215 return false; \
1216 } while (0)
1217
1218 txqattr = nla_nest_start_noflag(msg, attrtype);
1219 if (!txqattr)
1220 return false;
1221
1222 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1223 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1224 PUT_TXQVAL_U32(FLOWS, flows);
1225 PUT_TXQVAL_U32(DROPS, drops);
1226 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1227 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1228 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1229 PUT_TXQVAL_U32(COLLISIONS, collisions);
1230 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1231 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1232 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1233 nla_nest_end(msg, txqattr);
1234
1235 #undef PUT_TXQVAL_U32
1236 return true;
1237 }
1238
1239 /* netlink command implementations */
1240
1241 /**
1242 * nl80211_link_id - return link ID
1243 * @attrs: attributes to look at
1244 *
1245 * Returns: the link ID or 0 if not given
1246 *
1247 * Note this function doesn't do any validation of the link
1248 * ID validity wrt. links that were actually added, so it must
1249 * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1250 * or if additional validation is done.
1251 */
nl80211_link_id(struct nlattr ** attrs)1252 static unsigned int nl80211_link_id(struct nlattr **attrs)
1253 {
1254 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1255
1256 if (!linkid)
1257 return 0;
1258
1259 return nla_get_u8(linkid);
1260 }
1261
nl80211_link_id_or_invalid(struct nlattr ** attrs)1262 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1263 {
1264 struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1265
1266 if (!linkid)
1267 return -1;
1268
1269 return nla_get_u8(linkid);
1270 }
1271
1272 struct key_parse {
1273 struct key_params p;
1274 int idx;
1275 int type;
1276 bool def, defmgmt, defbeacon;
1277 bool def_uni, def_multi;
1278 };
1279
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1280 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1281 struct key_parse *k)
1282 {
1283 struct nlattr *tb[NL80211_KEY_MAX + 1];
1284 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1285 nl80211_key_policy,
1286 info->extack);
1287 if (err)
1288 return err;
1289
1290 k->def = !!tb[NL80211_KEY_DEFAULT];
1291 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1292 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1293
1294 if (k->def) {
1295 k->def_uni = true;
1296 k->def_multi = true;
1297 }
1298 if (k->defmgmt || k->defbeacon)
1299 k->def_multi = true;
1300
1301 if (tb[NL80211_KEY_IDX])
1302 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1303
1304 if (tb[NL80211_KEY_DATA]) {
1305 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1306 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1307 }
1308
1309 if (tb[NL80211_KEY_SEQ]) {
1310 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1311 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1312 }
1313
1314 if (tb[NL80211_KEY_CIPHER])
1315 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1316
1317 if (tb[NL80211_KEY_TYPE])
1318 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1319
1320 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1321 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1322
1323 err = nla_parse_nested_deprecated(kdt,
1324 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1325 tb[NL80211_KEY_DEFAULT_TYPES],
1326 nl80211_key_default_policy,
1327 info->extack);
1328 if (err)
1329 return err;
1330
1331 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1332 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1333 }
1334
1335 if (tb[NL80211_KEY_MODE])
1336 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1337
1338 return 0;
1339 }
1340
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1341 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1342 {
1343 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1344 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1345 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1346 }
1347
1348 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1349 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1350 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351 }
1352
1353 if (info->attrs[NL80211_ATTR_KEY_IDX])
1354 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1355
1356 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1357 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1358
1359 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1360 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1361
1362 if (k->def) {
1363 k->def_uni = true;
1364 k->def_multi = true;
1365 }
1366 if (k->defmgmt)
1367 k->def_multi = true;
1368
1369 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1370 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1371
1372 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1373 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1374 int err = nla_parse_nested_deprecated(kdt,
1375 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1376 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1377 nl80211_key_default_policy,
1378 info->extack);
1379 if (err)
1380 return err;
1381
1382 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1383 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1384 }
1385
1386 return 0;
1387 }
1388
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1389 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1390 {
1391 int err;
1392
1393 memset(k, 0, sizeof(*k));
1394 k->idx = -1;
1395 k->type = -1;
1396
1397 if (info->attrs[NL80211_ATTR_KEY])
1398 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1399 else
1400 err = nl80211_parse_key_old(info, k);
1401
1402 if (err)
1403 return err;
1404
1405 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1406 (k->defbeacon ? 1 : 0) > 1) {
1407 GENL_SET_ERR_MSG(info,
1408 "key with multiple default flags is invalid");
1409 return -EINVAL;
1410 }
1411
1412 if (k->defmgmt || k->defbeacon) {
1413 if (k->def_uni || !k->def_multi) {
1414 GENL_SET_ERR_MSG(info,
1415 "defmgmt/defbeacon key must be mcast");
1416 return -EINVAL;
1417 }
1418 }
1419
1420 if (k->idx != -1) {
1421 if (k->defmgmt) {
1422 if (k->idx < 4 || k->idx > 5) {
1423 GENL_SET_ERR_MSG(info,
1424 "defmgmt key idx not 4 or 5");
1425 return -EINVAL;
1426 }
1427 } else if (k->defbeacon) {
1428 if (k->idx < 6 || k->idx > 7) {
1429 GENL_SET_ERR_MSG(info,
1430 "defbeacon key idx not 6 or 7");
1431 return -EINVAL;
1432 }
1433 } else if (k->def) {
1434 if (k->idx < 0 || k->idx > 3) {
1435 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1436 return -EINVAL;
1437 }
1438 } else {
1439 if (k->idx < 0 || k->idx > 7) {
1440 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1441 return -EINVAL;
1442 }
1443 }
1444 }
1445
1446 return 0;
1447 }
1448
1449 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1450 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1451 struct genl_info *info, bool *no_ht)
1452 {
1453 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1454 struct key_parse parse;
1455 struct nlattr *key;
1456 struct cfg80211_cached_keys *result;
1457 int rem, err, def = 0;
1458 bool have_key = false;
1459
1460 nla_for_each_nested(key, keys, rem) {
1461 have_key = true;
1462 break;
1463 }
1464
1465 if (!have_key)
1466 return NULL;
1467
1468 result = kzalloc(sizeof(*result), GFP_KERNEL);
1469 if (!result)
1470 return ERR_PTR(-ENOMEM);
1471
1472 result->def = -1;
1473
1474 nla_for_each_nested(key, keys, rem) {
1475 memset(&parse, 0, sizeof(parse));
1476 parse.idx = -1;
1477
1478 err = nl80211_parse_key_new(info, key, &parse);
1479 if (err)
1480 goto error;
1481 err = -EINVAL;
1482 if (!parse.p.key)
1483 goto error;
1484 if (parse.idx < 0 || parse.idx > 3) {
1485 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1486 goto error;
1487 }
1488 if (parse.def) {
1489 if (def) {
1490 GENL_SET_ERR_MSG(info,
1491 "only one key can be default");
1492 goto error;
1493 }
1494 def = 1;
1495 result->def = parse.idx;
1496 if (!parse.def_uni || !parse.def_multi)
1497 goto error;
1498 } else if (parse.defmgmt)
1499 goto error;
1500 err = cfg80211_validate_key_settings(rdev, &parse.p,
1501 parse.idx, false, NULL);
1502 if (err)
1503 goto error;
1504 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1505 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1506 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1507 err = -EINVAL;
1508 goto error;
1509 }
1510 result->params[parse.idx].cipher = parse.p.cipher;
1511 result->params[parse.idx].key_len = parse.p.key_len;
1512 result->params[parse.idx].key = result->data[parse.idx];
1513 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1514
1515 /* must be WEP key if we got here */
1516 if (no_ht)
1517 *no_ht = true;
1518 }
1519
1520 if (result->def < 0) {
1521 err = -EINVAL;
1522 GENL_SET_ERR_MSG(info, "need a default/TX key");
1523 goto error;
1524 }
1525
1526 return result;
1527 error:
1528 kfree(result);
1529 return ERR_PTR(err);
1530 }
1531
nl80211_key_allowed(struct wireless_dev * wdev)1532 static int nl80211_key_allowed(struct wireless_dev *wdev)
1533 {
1534 ASSERT_WDEV_LOCK(wdev);
1535
1536 switch (wdev->iftype) {
1537 case NL80211_IFTYPE_AP:
1538 case NL80211_IFTYPE_AP_VLAN:
1539 case NL80211_IFTYPE_P2P_GO:
1540 case NL80211_IFTYPE_MESH_POINT:
1541 break;
1542 case NL80211_IFTYPE_ADHOC:
1543 if (wdev->u.ibss.current_bss)
1544 return 0;
1545 return -ENOLINK;
1546 case NL80211_IFTYPE_STATION:
1547 case NL80211_IFTYPE_P2P_CLIENT:
1548 if (wdev->connected)
1549 return 0;
1550 return -ENOLINK;
1551 case NL80211_IFTYPE_UNSPECIFIED:
1552 case NL80211_IFTYPE_OCB:
1553 case NL80211_IFTYPE_MONITOR:
1554 case NL80211_IFTYPE_NAN:
1555 case NL80211_IFTYPE_P2P_DEVICE:
1556 case NL80211_IFTYPE_WDS:
1557 case NUM_NL80211_IFTYPES:
1558 return -EINVAL;
1559 }
1560
1561 return 0;
1562 }
1563
nl80211_get_valid_chan(struct wiphy * wiphy,u32 freq)1564 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1565 u32 freq)
1566 {
1567 struct ieee80211_channel *chan;
1568
1569 chan = ieee80211_get_channel_khz(wiphy, freq);
1570 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1571 return NULL;
1572 return chan;
1573 }
1574
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1575 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1576 {
1577 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1578 int i;
1579
1580 if (!nl_modes)
1581 goto nla_put_failure;
1582
1583 i = 0;
1584 while (ifmodes) {
1585 if ((ifmodes & 1) && nla_put_flag(msg, i))
1586 goto nla_put_failure;
1587 ifmodes >>= 1;
1588 i++;
1589 }
1590
1591 nla_nest_end(msg, nl_modes);
1592 return 0;
1593
1594 nla_put_failure:
1595 return -ENOBUFS;
1596 }
1597
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1598 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1599 struct sk_buff *msg,
1600 bool large)
1601 {
1602 struct nlattr *nl_combis;
1603 int i, j;
1604
1605 nl_combis = nla_nest_start_noflag(msg,
1606 NL80211_ATTR_INTERFACE_COMBINATIONS);
1607 if (!nl_combis)
1608 goto nla_put_failure;
1609
1610 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1611 const struct ieee80211_iface_combination *c;
1612 struct nlattr *nl_combi, *nl_limits;
1613
1614 c = &wiphy->iface_combinations[i];
1615
1616 nl_combi = nla_nest_start_noflag(msg, i + 1);
1617 if (!nl_combi)
1618 goto nla_put_failure;
1619
1620 nl_limits = nla_nest_start_noflag(msg,
1621 NL80211_IFACE_COMB_LIMITS);
1622 if (!nl_limits)
1623 goto nla_put_failure;
1624
1625 for (j = 0; j < c->n_limits; j++) {
1626 struct nlattr *nl_limit;
1627
1628 nl_limit = nla_nest_start_noflag(msg, j + 1);
1629 if (!nl_limit)
1630 goto nla_put_failure;
1631 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1632 c->limits[j].max))
1633 goto nla_put_failure;
1634 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1635 c->limits[j].types))
1636 goto nla_put_failure;
1637 nla_nest_end(msg, nl_limit);
1638 }
1639
1640 nla_nest_end(msg, nl_limits);
1641
1642 if (c->beacon_int_infra_match &&
1643 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1644 goto nla_put_failure;
1645 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1646 c->num_different_channels) ||
1647 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1648 c->max_interfaces))
1649 goto nla_put_failure;
1650 if (large &&
1651 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1652 c->radar_detect_widths) ||
1653 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1654 c->radar_detect_regions)))
1655 goto nla_put_failure;
1656 if (c->beacon_int_min_gcd &&
1657 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1658 c->beacon_int_min_gcd))
1659 goto nla_put_failure;
1660
1661 nla_nest_end(msg, nl_combi);
1662 }
1663
1664 nla_nest_end(msg, nl_combis);
1665
1666 return 0;
1667 nla_put_failure:
1668 return -ENOBUFS;
1669 }
1670
1671 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1672 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1673 struct sk_buff *msg)
1674 {
1675 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1676 struct nlattr *nl_tcp;
1677
1678 if (!tcp)
1679 return 0;
1680
1681 nl_tcp = nla_nest_start_noflag(msg,
1682 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1683 if (!nl_tcp)
1684 return -ENOBUFS;
1685
1686 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1687 tcp->data_payload_max))
1688 return -ENOBUFS;
1689
1690 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1691 tcp->data_payload_max))
1692 return -ENOBUFS;
1693
1694 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1695 return -ENOBUFS;
1696
1697 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1698 sizeof(*tcp->tok), tcp->tok))
1699 return -ENOBUFS;
1700
1701 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1702 tcp->data_interval_max))
1703 return -ENOBUFS;
1704
1705 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1706 tcp->wake_payload_max))
1707 return -ENOBUFS;
1708
1709 nla_nest_end(msg, nl_tcp);
1710 return 0;
1711 }
1712
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1713 static int nl80211_send_wowlan(struct sk_buff *msg,
1714 struct cfg80211_registered_device *rdev,
1715 bool large)
1716 {
1717 struct nlattr *nl_wowlan;
1718
1719 if (!rdev->wiphy.wowlan)
1720 return 0;
1721
1722 nl_wowlan = nla_nest_start_noflag(msg,
1723 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1724 if (!nl_wowlan)
1725 return -ENOBUFS;
1726
1727 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1728 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1729 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1730 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1731 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1732 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1733 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1734 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1735 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1736 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1737 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1738 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1739 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1740 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1741 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1742 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1743 return -ENOBUFS;
1744
1745 if (rdev->wiphy.wowlan->n_patterns) {
1746 struct nl80211_pattern_support pat = {
1747 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1748 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1749 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1750 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1751 };
1752
1753 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1754 sizeof(pat), &pat))
1755 return -ENOBUFS;
1756 }
1757
1758 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1759 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1760 rdev->wiphy.wowlan->max_nd_match_sets))
1761 return -ENOBUFS;
1762
1763 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1764 return -ENOBUFS;
1765
1766 nla_nest_end(msg, nl_wowlan);
1767
1768 return 0;
1769 }
1770 #endif
1771
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1772 static int nl80211_send_coalesce(struct sk_buff *msg,
1773 struct cfg80211_registered_device *rdev)
1774 {
1775 struct nl80211_coalesce_rule_support rule;
1776
1777 if (!rdev->wiphy.coalesce)
1778 return 0;
1779
1780 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1781 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1782 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1783 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1784 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1785 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1786
1787 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1788 return -ENOBUFS;
1789
1790 return 0;
1791 }
1792
1793 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_supported_band * sband,const struct ieee80211_sband_iftype_data * iftdata)1794 nl80211_send_iftype_data(struct sk_buff *msg,
1795 const struct ieee80211_supported_band *sband,
1796 const struct ieee80211_sband_iftype_data *iftdata)
1797 {
1798 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1799 const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1800
1801 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1802 iftdata->types_mask))
1803 return -ENOBUFS;
1804
1805 if (he_cap->has_he) {
1806 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1807 sizeof(he_cap->he_cap_elem.mac_cap_info),
1808 he_cap->he_cap_elem.mac_cap_info) ||
1809 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1810 sizeof(he_cap->he_cap_elem.phy_cap_info),
1811 he_cap->he_cap_elem.phy_cap_info) ||
1812 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1813 sizeof(he_cap->he_mcs_nss_supp),
1814 &he_cap->he_mcs_nss_supp) ||
1815 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1816 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1817 return -ENOBUFS;
1818 }
1819
1820 if (eht_cap->has_eht && he_cap->has_he) {
1821 u8 mcs_nss_size, ppe_thresh_size;
1822 u16 ppe_thres_hdr;
1823 bool is_ap;
1824
1825 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1826 iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1827
1828 mcs_nss_size =
1829 ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1830 &eht_cap->eht_cap_elem,
1831 is_ap);
1832
1833 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1834 ppe_thresh_size =
1835 ieee80211_eht_ppe_size(ppe_thres_hdr,
1836 eht_cap->eht_cap_elem.phy_cap_info);
1837
1838 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1839 sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1840 eht_cap->eht_cap_elem.mac_cap_info) ||
1841 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1842 sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1843 eht_cap->eht_cap_elem.phy_cap_info) ||
1844 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1845 mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1846 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1847 ppe_thresh_size, eht_cap->eht_ppe_thres))
1848 return -ENOBUFS;
1849 }
1850
1851 if (sband->band == NL80211_BAND_6GHZ &&
1852 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1853 sizeof(iftdata->he_6ghz_capa),
1854 &iftdata->he_6ghz_capa))
1855 return -ENOBUFS;
1856
1857 if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1858 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1859 iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1860 return -ENOBUFS;
1861
1862 return 0;
1863 }
1864
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband,bool large)1865 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1866 struct ieee80211_supported_band *sband,
1867 bool large)
1868 {
1869 struct nlattr *nl_rates, *nl_rate;
1870 struct ieee80211_rate *rate;
1871 int i;
1872
1873 /* add HT info */
1874 if (sband->ht_cap.ht_supported &&
1875 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1876 sizeof(sband->ht_cap.mcs),
1877 &sband->ht_cap.mcs) ||
1878 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1879 sband->ht_cap.cap) ||
1880 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1881 sband->ht_cap.ampdu_factor) ||
1882 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1883 sband->ht_cap.ampdu_density)))
1884 return -ENOBUFS;
1885
1886 /* add VHT info */
1887 if (sband->vht_cap.vht_supported &&
1888 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1889 sizeof(sband->vht_cap.vht_mcs),
1890 &sband->vht_cap.vht_mcs) ||
1891 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1892 sband->vht_cap.cap)))
1893 return -ENOBUFS;
1894
1895 if (large && sband->n_iftype_data) {
1896 struct nlattr *nl_iftype_data =
1897 nla_nest_start_noflag(msg,
1898 NL80211_BAND_ATTR_IFTYPE_DATA);
1899 int err;
1900
1901 if (!nl_iftype_data)
1902 return -ENOBUFS;
1903
1904 for (i = 0; i < sband->n_iftype_data; i++) {
1905 struct nlattr *iftdata;
1906
1907 iftdata = nla_nest_start_noflag(msg, i + 1);
1908 if (!iftdata)
1909 return -ENOBUFS;
1910
1911 err = nl80211_send_iftype_data(msg, sband,
1912 &sband->iftype_data[i]);
1913 if (err)
1914 return err;
1915
1916 nla_nest_end(msg, iftdata);
1917 }
1918
1919 nla_nest_end(msg, nl_iftype_data);
1920 }
1921
1922 /* add EDMG info */
1923 if (large && sband->edmg_cap.channels &&
1924 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1925 sband->edmg_cap.channels) ||
1926 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1927 sband->edmg_cap.bw_config)))
1928
1929 return -ENOBUFS;
1930
1931 /* add bitrates */
1932 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1933 if (!nl_rates)
1934 return -ENOBUFS;
1935
1936 for (i = 0; i < sband->n_bitrates; i++) {
1937 nl_rate = nla_nest_start_noflag(msg, i);
1938 if (!nl_rate)
1939 return -ENOBUFS;
1940
1941 rate = &sband->bitrates[i];
1942 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1943 rate->bitrate))
1944 return -ENOBUFS;
1945 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1946 nla_put_flag(msg,
1947 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1948 return -ENOBUFS;
1949
1950 nla_nest_end(msg, nl_rate);
1951 }
1952
1953 nla_nest_end(msg, nl_rates);
1954
1955 return 0;
1956 }
1957
1958 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1959 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1960 const struct ieee80211_txrx_stypes *mgmt_stypes)
1961 {
1962 u16 stypes;
1963 struct nlattr *nl_ftypes, *nl_ifs;
1964 enum nl80211_iftype ift;
1965 int i;
1966
1967 if (!mgmt_stypes)
1968 return 0;
1969
1970 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1971 if (!nl_ifs)
1972 return -ENOBUFS;
1973
1974 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1975 nl_ftypes = nla_nest_start_noflag(msg, ift);
1976 if (!nl_ftypes)
1977 return -ENOBUFS;
1978 i = 0;
1979 stypes = mgmt_stypes[ift].tx;
1980 while (stypes) {
1981 if ((stypes & 1) &&
1982 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1983 (i << 4) | IEEE80211_FTYPE_MGMT))
1984 return -ENOBUFS;
1985 stypes >>= 1;
1986 i++;
1987 }
1988 nla_nest_end(msg, nl_ftypes);
1989 }
1990
1991 nla_nest_end(msg, nl_ifs);
1992
1993 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1994 if (!nl_ifs)
1995 return -ENOBUFS;
1996
1997 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1998 nl_ftypes = nla_nest_start_noflag(msg, ift);
1999 if (!nl_ftypes)
2000 return -ENOBUFS;
2001 i = 0;
2002 stypes = mgmt_stypes[ift].rx;
2003 while (stypes) {
2004 if ((stypes & 1) &&
2005 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2006 (i << 4) | IEEE80211_FTYPE_MGMT))
2007 return -ENOBUFS;
2008 stypes >>= 1;
2009 i++;
2010 }
2011 nla_nest_end(msg, nl_ftypes);
2012 }
2013 nla_nest_end(msg, nl_ifs);
2014
2015 return 0;
2016 }
2017
2018 #define CMD(op, n) \
2019 do { \
2020 if (rdev->ops->op) { \
2021 i++; \
2022 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
2023 goto nla_put_failure; \
2024 } \
2025 } while (0)
2026
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2027 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2028 struct sk_buff *msg)
2029 {
2030 int i = 0;
2031
2032 /*
2033 * do *NOT* add anything into this function, new things need to be
2034 * advertised only to new versions of userspace that can deal with
2035 * the split (and they can't possibly care about new features...
2036 */
2037 CMD(add_virtual_intf, NEW_INTERFACE);
2038 CMD(change_virtual_intf, SET_INTERFACE);
2039 CMD(add_key, NEW_KEY);
2040 CMD(start_ap, START_AP);
2041 CMD(add_station, NEW_STATION);
2042 CMD(add_mpath, NEW_MPATH);
2043 CMD(update_mesh_config, SET_MESH_CONFIG);
2044 CMD(change_bss, SET_BSS);
2045 CMD(auth, AUTHENTICATE);
2046 CMD(assoc, ASSOCIATE);
2047 CMD(deauth, DEAUTHENTICATE);
2048 CMD(disassoc, DISASSOCIATE);
2049 CMD(join_ibss, JOIN_IBSS);
2050 CMD(join_mesh, JOIN_MESH);
2051 CMD(set_pmksa, SET_PMKSA);
2052 CMD(del_pmksa, DEL_PMKSA);
2053 CMD(flush_pmksa, FLUSH_PMKSA);
2054 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2055 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2056 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2057 CMD(mgmt_tx, FRAME);
2058 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2059 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2060 i++;
2061 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2062 goto nla_put_failure;
2063 }
2064 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2065 rdev->ops->join_mesh) {
2066 i++;
2067 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2068 goto nla_put_failure;
2069 }
2070 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2071 CMD(tdls_mgmt, TDLS_MGMT);
2072 CMD(tdls_oper, TDLS_OPER);
2073 }
2074 if (rdev->wiphy.max_sched_scan_reqs)
2075 CMD(sched_scan_start, START_SCHED_SCAN);
2076 CMD(probe_client, PROBE_CLIENT);
2077 CMD(set_noack_map, SET_NOACK_MAP);
2078 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2079 i++;
2080 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2081 goto nla_put_failure;
2082 }
2083 CMD(start_p2p_device, START_P2P_DEVICE);
2084 CMD(set_mcast_rate, SET_MCAST_RATE);
2085 #ifdef CONFIG_NL80211_TESTMODE
2086 CMD(testmode_cmd, TESTMODE);
2087 #endif
2088
2089 if (rdev->ops->connect || rdev->ops->auth) {
2090 i++;
2091 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2092 goto nla_put_failure;
2093 }
2094
2095 if (rdev->ops->disconnect || rdev->ops->deauth) {
2096 i++;
2097 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2098 goto nla_put_failure;
2099 }
2100
2101 return i;
2102 nla_put_failure:
2103 return -ENOBUFS;
2104 }
2105
2106 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)2107 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2108 struct sk_buff *msg)
2109 {
2110 struct nlattr *ftm;
2111
2112 if (!cap->ftm.supported)
2113 return 0;
2114
2115 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2116 if (!ftm)
2117 return -ENOBUFS;
2118
2119 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2120 return -ENOBUFS;
2121 if (cap->ftm.non_asap &&
2122 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2123 return -ENOBUFS;
2124 if (cap->ftm.request_lci &&
2125 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2126 return -ENOBUFS;
2127 if (cap->ftm.request_civicloc &&
2128 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2129 return -ENOBUFS;
2130 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2131 cap->ftm.preambles))
2132 return -ENOBUFS;
2133 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2134 cap->ftm.bandwidths))
2135 return -ENOBUFS;
2136 if (cap->ftm.max_bursts_exponent >= 0 &&
2137 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2138 cap->ftm.max_bursts_exponent))
2139 return -ENOBUFS;
2140 if (cap->ftm.max_ftms_per_burst &&
2141 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2142 cap->ftm.max_ftms_per_burst))
2143 return -ENOBUFS;
2144 if (cap->ftm.trigger_based &&
2145 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2146 return -ENOBUFS;
2147 if (cap->ftm.non_trigger_based &&
2148 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2149 return -ENOBUFS;
2150
2151 nla_nest_end(msg, ftm);
2152 return 0;
2153 }
2154
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2155 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2156 struct sk_buff *msg)
2157 {
2158 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2159 struct nlattr *pmsr, *caps;
2160
2161 if (!cap)
2162 return 0;
2163
2164 /*
2165 * we don't need to clean up anything here since the caller
2166 * will genlmsg_cancel() if we fail
2167 */
2168
2169 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2170 if (!pmsr)
2171 return -ENOBUFS;
2172
2173 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2174 return -ENOBUFS;
2175
2176 if (cap->report_ap_tsf &&
2177 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2178 return -ENOBUFS;
2179
2180 if (cap->randomize_mac_addr &&
2181 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2182 return -ENOBUFS;
2183
2184 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2185 if (!caps)
2186 return -ENOBUFS;
2187
2188 if (nl80211_send_pmsr_ftm_capa(cap, msg))
2189 return -ENOBUFS;
2190
2191 nla_nest_end(msg, caps);
2192 nla_nest_end(msg, pmsr);
2193
2194 return 0;
2195 }
2196
2197 static int
nl80211_put_iftype_akm_suites(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2198 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2199 struct sk_buff *msg)
2200 {
2201 int i;
2202 struct nlattr *nested, *nested_akms;
2203 const struct wiphy_iftype_akm_suites *iftype_akms;
2204
2205 if (!rdev->wiphy.num_iftype_akm_suites ||
2206 !rdev->wiphy.iftype_akm_suites)
2207 return 0;
2208
2209 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2210 if (!nested)
2211 return -ENOBUFS;
2212
2213 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2214 nested_akms = nla_nest_start(msg, i + 1);
2215 if (!nested_akms)
2216 return -ENOBUFS;
2217
2218 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2219
2220 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2221 iftype_akms->iftypes_mask))
2222 return -ENOBUFS;
2223
2224 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2225 sizeof(u32) * iftype_akms->n_akm_suites,
2226 iftype_akms->akm_suites)) {
2227 return -ENOBUFS;
2228 }
2229 nla_nest_end(msg, nested_akms);
2230 }
2231
2232 nla_nest_end(msg, nested);
2233
2234 return 0;
2235 }
2236
2237 static int
nl80211_put_tid_config_support(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2238 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2239 struct sk_buff *msg)
2240 {
2241 struct nlattr *supp;
2242
2243 if (!rdev->wiphy.tid_config_support.vif &&
2244 !rdev->wiphy.tid_config_support.peer)
2245 return 0;
2246
2247 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2248 if (!supp)
2249 return -ENOSPC;
2250
2251 if (rdev->wiphy.tid_config_support.vif &&
2252 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2253 rdev->wiphy.tid_config_support.vif,
2254 NL80211_TID_CONFIG_ATTR_PAD))
2255 goto fail;
2256
2257 if (rdev->wiphy.tid_config_support.peer &&
2258 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2259 rdev->wiphy.tid_config_support.peer,
2260 NL80211_TID_CONFIG_ATTR_PAD))
2261 goto fail;
2262
2263 /* for now we just use the same value ... makes more sense */
2264 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2265 rdev->wiphy.tid_config_support.max_retry))
2266 goto fail;
2267 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2268 rdev->wiphy.tid_config_support.max_retry))
2269 goto fail;
2270
2271 nla_nest_end(msg, supp);
2272
2273 return 0;
2274 fail:
2275 nla_nest_cancel(msg, supp);
2276 return -ENOBUFS;
2277 }
2278
2279 static int
nl80211_put_sar_specs(struct cfg80211_registered_device * rdev,struct sk_buff * msg)2280 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2281 struct sk_buff *msg)
2282 {
2283 struct nlattr *sar_capa, *specs, *sub_freq_range;
2284 u8 num_freq_ranges;
2285 int i;
2286
2287 if (!rdev->wiphy.sar_capa)
2288 return 0;
2289
2290 num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2291
2292 sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2293 if (!sar_capa)
2294 return -ENOSPC;
2295
2296 if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2297 goto fail;
2298
2299 specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2300 if (!specs)
2301 goto fail;
2302
2303 /* report supported freq_ranges */
2304 for (i = 0; i < num_freq_ranges; i++) {
2305 sub_freq_range = nla_nest_start(msg, i + 1);
2306 if (!sub_freq_range)
2307 goto fail;
2308
2309 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2310 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2311 goto fail;
2312
2313 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2314 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2315 goto fail;
2316
2317 nla_nest_end(msg, sub_freq_range);
2318 }
2319
2320 nla_nest_end(msg, specs);
2321 nla_nest_end(msg, sar_capa);
2322
2323 return 0;
2324 fail:
2325 nla_nest_cancel(msg, sar_capa);
2326 return -ENOBUFS;
2327 }
2328
nl80211_put_mbssid_support(struct wiphy * wiphy,struct sk_buff * msg)2329 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2330 {
2331 struct nlattr *config;
2332
2333 if (!wiphy->mbssid_max_interfaces)
2334 return 0;
2335
2336 config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2337 if (!config)
2338 return -ENOBUFS;
2339
2340 if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2341 wiphy->mbssid_max_interfaces))
2342 goto fail;
2343
2344 if (wiphy->ema_max_profile_periodicity &&
2345 nla_put_u8(msg,
2346 NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2347 wiphy->ema_max_profile_periodicity))
2348 goto fail;
2349
2350 nla_nest_end(msg, config);
2351 return 0;
2352
2353 fail:
2354 nla_nest_cancel(msg, config);
2355 return -ENOBUFS;
2356 }
2357
2358 struct nl80211_dump_wiphy_state {
2359 s64 filter_wiphy;
2360 long start;
2361 long split_start, band_start, chan_start, capa_start;
2362 bool split;
2363 };
2364
nl80211_send_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd,struct sk_buff * msg,u32 portid,u32 seq,int flags,struct nl80211_dump_wiphy_state * state)2365 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2366 enum nl80211_commands cmd,
2367 struct sk_buff *msg, u32 portid, u32 seq,
2368 int flags, struct nl80211_dump_wiphy_state *state)
2369 {
2370 void *hdr;
2371 struct nlattr *nl_bands, *nl_band;
2372 struct nlattr *nl_freqs, *nl_freq;
2373 struct nlattr *nl_cmds;
2374 enum nl80211_band band;
2375 struct ieee80211_channel *chan;
2376 int i;
2377 const struct ieee80211_txrx_stypes *mgmt_stypes =
2378 rdev->wiphy.mgmt_stypes;
2379 u32 features;
2380
2381 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2382 if (!hdr)
2383 return -ENOBUFS;
2384
2385 if (WARN_ON(!state))
2386 return -EINVAL;
2387
2388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2389 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2390 wiphy_name(&rdev->wiphy)) ||
2391 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2392 cfg80211_rdev_list_generation))
2393 goto nla_put_failure;
2394
2395 if (cmd != NL80211_CMD_NEW_WIPHY)
2396 goto finish;
2397
2398 switch (state->split_start) {
2399 case 0:
2400 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2401 rdev->wiphy.retry_short) ||
2402 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2403 rdev->wiphy.retry_long) ||
2404 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2405 rdev->wiphy.frag_threshold) ||
2406 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2407 rdev->wiphy.rts_threshold) ||
2408 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2409 rdev->wiphy.coverage_class) ||
2410 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2411 rdev->wiphy.max_scan_ssids) ||
2412 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2413 rdev->wiphy.max_sched_scan_ssids) ||
2414 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2415 rdev->wiphy.max_scan_ie_len) ||
2416 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2417 rdev->wiphy.max_sched_scan_ie_len) ||
2418 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2419 rdev->wiphy.max_match_sets))
2420 goto nla_put_failure;
2421
2422 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2423 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2424 goto nla_put_failure;
2425 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2426 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2427 goto nla_put_failure;
2428 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2429 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2430 goto nla_put_failure;
2431 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2432 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2433 goto nla_put_failure;
2434 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2435 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2436 goto nla_put_failure;
2437 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2438 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2439 goto nla_put_failure;
2440 state->split_start++;
2441 if (state->split)
2442 break;
2443 fallthrough;
2444 case 1:
2445 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2446 sizeof(u32) * rdev->wiphy.n_cipher_suites,
2447 rdev->wiphy.cipher_suites))
2448 goto nla_put_failure;
2449
2450 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2451 rdev->wiphy.max_num_pmkids))
2452 goto nla_put_failure;
2453
2454 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2455 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2456 goto nla_put_failure;
2457
2458 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2459 rdev->wiphy.available_antennas_tx) ||
2460 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2461 rdev->wiphy.available_antennas_rx))
2462 goto nla_put_failure;
2463
2464 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2465 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2466 rdev->wiphy.probe_resp_offload))
2467 goto nla_put_failure;
2468
2469 if ((rdev->wiphy.available_antennas_tx ||
2470 rdev->wiphy.available_antennas_rx) &&
2471 rdev->ops->get_antenna) {
2472 u32 tx_ant = 0, rx_ant = 0;
2473 int res;
2474
2475 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2476 if (!res) {
2477 if (nla_put_u32(msg,
2478 NL80211_ATTR_WIPHY_ANTENNA_TX,
2479 tx_ant) ||
2480 nla_put_u32(msg,
2481 NL80211_ATTR_WIPHY_ANTENNA_RX,
2482 rx_ant))
2483 goto nla_put_failure;
2484 }
2485 }
2486
2487 state->split_start++;
2488 if (state->split)
2489 break;
2490 fallthrough;
2491 case 2:
2492 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2493 rdev->wiphy.interface_modes))
2494 goto nla_put_failure;
2495 state->split_start++;
2496 if (state->split)
2497 break;
2498 fallthrough;
2499 case 3:
2500 nl_bands = nla_nest_start_noflag(msg,
2501 NL80211_ATTR_WIPHY_BANDS);
2502 if (!nl_bands)
2503 goto nla_put_failure;
2504
2505 for (band = state->band_start;
2506 band < (state->split ?
2507 NUM_NL80211_BANDS :
2508 NL80211_BAND_60GHZ + 1);
2509 band++) {
2510 struct ieee80211_supported_band *sband;
2511
2512 /* omit higher bands for ancient software */
2513 if (band > NL80211_BAND_5GHZ && !state->split)
2514 break;
2515
2516 sband = rdev->wiphy.bands[band];
2517
2518 if (!sband)
2519 continue;
2520
2521 nl_band = nla_nest_start_noflag(msg, band);
2522 if (!nl_band)
2523 goto nla_put_failure;
2524
2525 switch (state->chan_start) {
2526 case 0:
2527 if (nl80211_send_band_rateinfo(msg, sband,
2528 state->split))
2529 goto nla_put_failure;
2530 state->chan_start++;
2531 if (state->split)
2532 break;
2533 fallthrough;
2534 default:
2535 /* add frequencies */
2536 nl_freqs = nla_nest_start_noflag(msg,
2537 NL80211_BAND_ATTR_FREQS);
2538 if (!nl_freqs)
2539 goto nla_put_failure;
2540
2541 for (i = state->chan_start - 1;
2542 i < sband->n_channels;
2543 i++) {
2544 nl_freq = nla_nest_start_noflag(msg,
2545 i);
2546 if (!nl_freq)
2547 goto nla_put_failure;
2548
2549 chan = &sband->channels[i];
2550
2551 if (nl80211_msg_put_channel(
2552 msg, &rdev->wiphy, chan,
2553 state->split))
2554 goto nla_put_failure;
2555
2556 nla_nest_end(msg, nl_freq);
2557 if (state->split)
2558 break;
2559 }
2560 if (i < sband->n_channels)
2561 state->chan_start = i + 2;
2562 else
2563 state->chan_start = 0;
2564 nla_nest_end(msg, nl_freqs);
2565 }
2566
2567 nla_nest_end(msg, nl_band);
2568
2569 if (state->split) {
2570 /* start again here */
2571 if (state->chan_start)
2572 band--;
2573 break;
2574 }
2575 }
2576 nla_nest_end(msg, nl_bands);
2577
2578 if (band < NUM_NL80211_BANDS)
2579 state->band_start = band + 1;
2580 else
2581 state->band_start = 0;
2582
2583 /* if bands & channels are done, continue outside */
2584 if (state->band_start == 0 && state->chan_start == 0)
2585 state->split_start++;
2586 if (state->split)
2587 break;
2588 fallthrough;
2589 case 4:
2590 nl_cmds = nla_nest_start_noflag(msg,
2591 NL80211_ATTR_SUPPORTED_COMMANDS);
2592 if (!nl_cmds)
2593 goto nla_put_failure;
2594
2595 i = nl80211_add_commands_unsplit(rdev, msg);
2596 if (i < 0)
2597 goto nla_put_failure;
2598 if (state->split) {
2599 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2600 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2601 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2602 CMD(channel_switch, CHANNEL_SWITCH);
2603 CMD(set_qos_map, SET_QOS_MAP);
2604 if (rdev->wiphy.features &
2605 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2606 CMD(add_tx_ts, ADD_TX_TS);
2607 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2608 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2609 CMD(update_ft_ies, UPDATE_FT_IES);
2610 if (rdev->wiphy.sar_capa)
2611 CMD(set_sar_specs, SET_SAR_SPECS);
2612 }
2613 #undef CMD
2614
2615 nla_nest_end(msg, nl_cmds);
2616 state->split_start++;
2617 if (state->split)
2618 break;
2619 fallthrough;
2620 case 5:
2621 if (rdev->ops->remain_on_channel &&
2622 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2623 nla_put_u32(msg,
2624 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2625 rdev->wiphy.max_remain_on_channel_duration))
2626 goto nla_put_failure;
2627
2628 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2629 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2630 goto nla_put_failure;
2631
2632 state->split_start++;
2633 if (state->split)
2634 break;
2635 fallthrough;
2636 case 6:
2637 #ifdef CONFIG_PM
2638 if (nl80211_send_wowlan(msg, rdev, state->split))
2639 goto nla_put_failure;
2640 state->split_start++;
2641 if (state->split)
2642 break;
2643 #else
2644 state->split_start++;
2645 #endif
2646 fallthrough;
2647 case 7:
2648 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2649 rdev->wiphy.software_iftypes))
2650 goto nla_put_failure;
2651
2652 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2653 state->split))
2654 goto nla_put_failure;
2655
2656 state->split_start++;
2657 if (state->split)
2658 break;
2659 fallthrough;
2660 case 8:
2661 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2662 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2663 rdev->wiphy.ap_sme_capa))
2664 goto nla_put_failure;
2665
2666 features = rdev->wiphy.features;
2667 /*
2668 * We can only add the per-channel limit information if the
2669 * dump is split, otherwise it makes it too big. Therefore
2670 * only advertise it in that case.
2671 */
2672 if (state->split)
2673 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2674 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2675 goto nla_put_failure;
2676
2677 if (rdev->wiphy.ht_capa_mod_mask &&
2678 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2679 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2680 rdev->wiphy.ht_capa_mod_mask))
2681 goto nla_put_failure;
2682
2683 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2684 rdev->wiphy.max_acl_mac_addrs &&
2685 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2686 rdev->wiphy.max_acl_mac_addrs))
2687 goto nla_put_failure;
2688
2689 /*
2690 * Any information below this point is only available to
2691 * applications that can deal with it being split. This
2692 * helps ensure that newly added capabilities don't break
2693 * older tools by overrunning their buffers.
2694 *
2695 * We still increment split_start so that in the split
2696 * case we'll continue with more data in the next round,
2697 * but break unconditionally so unsplit data stops here.
2698 */
2699 if (state->split)
2700 state->split_start++;
2701 else
2702 state->split_start = 0;
2703 break;
2704 case 9:
2705 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2706 goto nla_put_failure;
2707
2708 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2709 rdev->wiphy.max_sched_scan_plans) ||
2710 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2711 rdev->wiphy.max_sched_scan_plan_interval) ||
2712 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2713 rdev->wiphy.max_sched_scan_plan_iterations))
2714 goto nla_put_failure;
2715
2716 if (rdev->wiphy.extended_capabilities &&
2717 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2718 rdev->wiphy.extended_capabilities_len,
2719 rdev->wiphy.extended_capabilities) ||
2720 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2721 rdev->wiphy.extended_capabilities_len,
2722 rdev->wiphy.extended_capabilities_mask)))
2723 goto nla_put_failure;
2724
2725 if (rdev->wiphy.vht_capa_mod_mask &&
2726 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2727 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2728 rdev->wiphy.vht_capa_mod_mask))
2729 goto nla_put_failure;
2730
2731 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2732 rdev->wiphy.perm_addr))
2733 goto nla_put_failure;
2734
2735 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2736 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2737 rdev->wiphy.addr_mask))
2738 goto nla_put_failure;
2739
2740 if (rdev->wiphy.n_addresses > 1) {
2741 void *attr;
2742
2743 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2744 if (!attr)
2745 goto nla_put_failure;
2746
2747 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2748 if (nla_put(msg, i + 1, ETH_ALEN,
2749 rdev->wiphy.addresses[i].addr))
2750 goto nla_put_failure;
2751
2752 nla_nest_end(msg, attr);
2753 }
2754
2755 state->split_start++;
2756 break;
2757 case 10:
2758 if (nl80211_send_coalesce(msg, rdev))
2759 goto nla_put_failure;
2760
2761 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2762 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2763 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2764 goto nla_put_failure;
2765
2766 if (rdev->wiphy.max_ap_assoc_sta &&
2767 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2768 rdev->wiphy.max_ap_assoc_sta))
2769 goto nla_put_failure;
2770
2771 state->split_start++;
2772 break;
2773 case 11:
2774 if (rdev->wiphy.n_vendor_commands) {
2775 const struct nl80211_vendor_cmd_info *info;
2776 struct nlattr *nested;
2777
2778 nested = nla_nest_start_noflag(msg,
2779 NL80211_ATTR_VENDOR_DATA);
2780 if (!nested)
2781 goto nla_put_failure;
2782
2783 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2784 info = &rdev->wiphy.vendor_commands[i].info;
2785 if (nla_put(msg, i + 1, sizeof(*info), info))
2786 goto nla_put_failure;
2787 }
2788 nla_nest_end(msg, nested);
2789 }
2790
2791 if (rdev->wiphy.n_vendor_events) {
2792 const struct nl80211_vendor_cmd_info *info;
2793 struct nlattr *nested;
2794
2795 nested = nla_nest_start_noflag(msg,
2796 NL80211_ATTR_VENDOR_EVENTS);
2797 if (!nested)
2798 goto nla_put_failure;
2799
2800 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2801 info = &rdev->wiphy.vendor_events[i];
2802 if (nla_put(msg, i + 1, sizeof(*info), info))
2803 goto nla_put_failure;
2804 }
2805 nla_nest_end(msg, nested);
2806 }
2807 state->split_start++;
2808 break;
2809 case 12:
2810 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2811 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2812 rdev->wiphy.max_num_csa_counters))
2813 goto nla_put_failure;
2814
2815 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2816 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2817 goto nla_put_failure;
2818
2819 if (rdev->wiphy.max_sched_scan_reqs &&
2820 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2821 rdev->wiphy.max_sched_scan_reqs))
2822 goto nla_put_failure;
2823
2824 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2825 sizeof(rdev->wiphy.ext_features),
2826 rdev->wiphy.ext_features))
2827 goto nla_put_failure;
2828
2829 if (rdev->wiphy.bss_select_support) {
2830 struct nlattr *nested;
2831 u32 bss_select_support = rdev->wiphy.bss_select_support;
2832
2833 nested = nla_nest_start_noflag(msg,
2834 NL80211_ATTR_BSS_SELECT);
2835 if (!nested)
2836 goto nla_put_failure;
2837
2838 i = 0;
2839 while (bss_select_support) {
2840 if ((bss_select_support & 1) &&
2841 nla_put_flag(msg, i))
2842 goto nla_put_failure;
2843 i++;
2844 bss_select_support >>= 1;
2845 }
2846 nla_nest_end(msg, nested);
2847 }
2848
2849 state->split_start++;
2850 break;
2851 case 13:
2852 if (rdev->wiphy.num_iftype_ext_capab &&
2853 rdev->wiphy.iftype_ext_capab) {
2854 struct nlattr *nested_ext_capab, *nested;
2855
2856 nested = nla_nest_start_noflag(msg,
2857 NL80211_ATTR_IFTYPE_EXT_CAPA);
2858 if (!nested)
2859 goto nla_put_failure;
2860
2861 for (i = state->capa_start;
2862 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2863 const struct wiphy_iftype_ext_capab *capab;
2864
2865 capab = &rdev->wiphy.iftype_ext_capab[i];
2866
2867 nested_ext_capab = nla_nest_start_noflag(msg,
2868 i);
2869 if (!nested_ext_capab ||
2870 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2871 capab->iftype) ||
2872 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2873 capab->extended_capabilities_len,
2874 capab->extended_capabilities) ||
2875 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2876 capab->extended_capabilities_len,
2877 capab->extended_capabilities_mask))
2878 goto nla_put_failure;
2879
2880 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2881 (nla_put_u16(msg,
2882 NL80211_ATTR_EML_CAPABILITY,
2883 capab->eml_capabilities) ||
2884 nla_put_u16(msg,
2885 NL80211_ATTR_MLD_CAPA_AND_OPS,
2886 capab->mld_capa_and_ops)))
2887 goto nla_put_failure;
2888
2889 nla_nest_end(msg, nested_ext_capab);
2890 if (state->split)
2891 break;
2892 }
2893 nla_nest_end(msg, nested);
2894 if (i < rdev->wiphy.num_iftype_ext_capab) {
2895 state->capa_start = i + 1;
2896 break;
2897 }
2898 }
2899
2900 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2901 rdev->wiphy.nan_supported_bands))
2902 goto nla_put_failure;
2903
2904 if (wiphy_ext_feature_isset(&rdev->wiphy,
2905 NL80211_EXT_FEATURE_TXQS)) {
2906 struct cfg80211_txq_stats txqstats = {};
2907 int res;
2908
2909 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2910 if (!res &&
2911 !nl80211_put_txq_stats(msg, &txqstats,
2912 NL80211_ATTR_TXQ_STATS))
2913 goto nla_put_failure;
2914
2915 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2916 rdev->wiphy.txq_limit))
2917 goto nla_put_failure;
2918 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2919 rdev->wiphy.txq_memory_limit))
2920 goto nla_put_failure;
2921 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2922 rdev->wiphy.txq_quantum))
2923 goto nla_put_failure;
2924 }
2925
2926 state->split_start++;
2927 break;
2928 case 14:
2929 if (nl80211_send_pmsr_capa(rdev, msg))
2930 goto nla_put_failure;
2931
2932 state->split_start++;
2933 break;
2934 case 15:
2935 if (rdev->wiphy.akm_suites &&
2936 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2937 sizeof(u32) * rdev->wiphy.n_akm_suites,
2938 rdev->wiphy.akm_suites))
2939 goto nla_put_failure;
2940
2941 if (nl80211_put_iftype_akm_suites(rdev, msg))
2942 goto nla_put_failure;
2943
2944 if (nl80211_put_tid_config_support(rdev, msg))
2945 goto nla_put_failure;
2946 state->split_start++;
2947 break;
2948 case 16:
2949 if (nl80211_put_sar_specs(rdev, msg))
2950 goto nla_put_failure;
2951
2952 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2953 goto nla_put_failure;
2954
2955 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2956 rdev->wiphy.max_num_akm_suites))
2957 goto nla_put_failure;
2958
2959 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2960 nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2961
2962 /* done */
2963 state->split_start = 0;
2964 break;
2965 }
2966 finish:
2967 genlmsg_end(msg, hdr);
2968 return 0;
2969
2970 nla_put_failure:
2971 genlmsg_cancel(msg, hdr);
2972 return -EMSGSIZE;
2973 }
2974
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)2975 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2976 struct netlink_callback *cb,
2977 struct nl80211_dump_wiphy_state *state)
2978 {
2979 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2980 int ret;
2981
2982 if (!tb)
2983 return -ENOMEM;
2984
2985 ret = nlmsg_parse_deprecated(cb->nlh,
2986 GENL_HDRLEN + nl80211_fam.hdrsize,
2987 tb, nl80211_fam.maxattr,
2988 nl80211_policy, NULL);
2989 /* ignore parse errors for backward compatibility */
2990 if (ret) {
2991 ret = 0;
2992 goto out;
2993 }
2994
2995 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2996 if (tb[NL80211_ATTR_WIPHY])
2997 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2998 if (tb[NL80211_ATTR_WDEV])
2999 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3000 if (tb[NL80211_ATTR_IFINDEX]) {
3001 struct net_device *netdev;
3002 struct cfg80211_registered_device *rdev;
3003 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3004
3005 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3006 if (!netdev) {
3007 ret = -ENODEV;
3008 goto out;
3009 }
3010 if (netdev->ieee80211_ptr) {
3011 rdev = wiphy_to_rdev(
3012 netdev->ieee80211_ptr->wiphy);
3013 state->filter_wiphy = rdev->wiphy_idx;
3014 }
3015 }
3016
3017 ret = 0;
3018 out:
3019 kfree(tb);
3020 return ret;
3021 }
3022
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)3023 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3024 {
3025 int idx = 0, ret;
3026 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3027 struct cfg80211_registered_device *rdev;
3028
3029 rtnl_lock();
3030 if (!state) {
3031 state = kzalloc(sizeof(*state), GFP_KERNEL);
3032 if (!state) {
3033 rtnl_unlock();
3034 return -ENOMEM;
3035 }
3036 state->filter_wiphy = -1;
3037 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3038 if (ret) {
3039 kfree(state);
3040 rtnl_unlock();
3041 return ret;
3042 }
3043 cb->args[0] = (long)state;
3044 }
3045
3046 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3047 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3048 continue;
3049 if (++idx <= state->start)
3050 continue;
3051 if (state->filter_wiphy != -1 &&
3052 state->filter_wiphy != rdev->wiphy_idx)
3053 continue;
3054 /* attempt to fit multiple wiphy data chunks into the skb */
3055 do {
3056 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3057 skb,
3058 NETLINK_CB(cb->skb).portid,
3059 cb->nlh->nlmsg_seq,
3060 NLM_F_MULTI, state);
3061 if (ret < 0) {
3062 /*
3063 * If sending the wiphy data didn't fit (ENOBUFS
3064 * or EMSGSIZE returned), this SKB is still
3065 * empty (so it's not too big because another
3066 * wiphy dataset is already in the skb) and
3067 * we've not tried to adjust the dump allocation
3068 * yet ... then adjust the alloc size to be
3069 * bigger, and return 1 but with the empty skb.
3070 * This results in an empty message being RX'ed
3071 * in userspace, but that is ignored.
3072 *
3073 * We can then retry with the larger buffer.
3074 */
3075 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3076 !skb->len && !state->split &&
3077 cb->min_dump_alloc < 4096) {
3078 cb->min_dump_alloc = 4096;
3079 state->split_start = 0;
3080 rtnl_unlock();
3081 return 1;
3082 }
3083 idx--;
3084 break;
3085 }
3086 } while (state->split_start > 0);
3087 break;
3088 }
3089 rtnl_unlock();
3090
3091 state->start = idx;
3092
3093 return skb->len;
3094 }
3095
nl80211_dump_wiphy_done(struct netlink_callback * cb)3096 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3097 {
3098 kfree((void *)cb->args[0]);
3099 return 0;
3100 }
3101
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)3102 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3103 {
3104 struct sk_buff *msg;
3105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106 struct nl80211_dump_wiphy_state state = {};
3107
3108 msg = nlmsg_new(4096, GFP_KERNEL);
3109 if (!msg)
3110 return -ENOMEM;
3111
3112 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3113 info->snd_portid, info->snd_seq, 0,
3114 &state) < 0) {
3115 nlmsg_free(msg);
3116 return -ENOBUFS;
3117 }
3118
3119 return genlmsg_reply(msg, info);
3120 }
3121
3122 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3123 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
3124 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
3125 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
3126 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
3127 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
3128 };
3129
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)3130 static int parse_txq_params(struct nlattr *tb[],
3131 struct ieee80211_txq_params *txq_params)
3132 {
3133 u8 ac;
3134
3135 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3136 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3137 !tb[NL80211_TXQ_ATTR_AIFS])
3138 return -EINVAL;
3139
3140 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3141 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3142 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3143 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3144 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3145
3146 if (ac >= NL80211_NUM_ACS)
3147 return -EINVAL;
3148 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3149 return 0;
3150 }
3151
nl80211_can_set_dev_channel(struct wireless_dev * wdev)3152 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3153 {
3154 /*
3155 * You can only set the channel explicitly for some interfaces,
3156 * most have their channel managed via their respective
3157 * "establish a connection" command (connect, join, ...)
3158 *
3159 * For AP/GO and mesh mode, the channel can be set with the
3160 * channel userspace API, but is only stored and passed to the
3161 * low-level driver when the AP starts or the mesh is joined.
3162 * This is for backward compatibility, userspace can also give
3163 * the channel in the start-ap or join-mesh commands instead.
3164 *
3165 * Monitors are special as they are normally slaved to
3166 * whatever else is going on, so they have their own special
3167 * operation to set the monitor channel if possible.
3168 */
3169 return !wdev ||
3170 wdev->iftype == NL80211_IFTYPE_AP ||
3171 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3172 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3173 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3174 }
3175
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)3176 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3177 struct genl_info *info,
3178 struct cfg80211_chan_def *chandef)
3179 {
3180 struct netlink_ext_ack *extack = info->extack;
3181 struct nlattr **attrs = info->attrs;
3182 u32 control_freq;
3183
3184 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3185 return -EINVAL;
3186
3187 control_freq = MHZ_TO_KHZ(
3188 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3189 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3190 control_freq +=
3191 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3192
3193 memset(chandef, 0, sizeof(*chandef));
3194 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3195 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3196 chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3197 chandef->freq1_offset = control_freq % 1000;
3198 chandef->center_freq2 = 0;
3199
3200 /* Primary channel not allowed */
3201 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3202 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3203 "Channel is disabled");
3204 return -EINVAL;
3205 }
3206
3207 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3208 enum nl80211_channel_type chantype;
3209
3210 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3211
3212 switch (chantype) {
3213 case NL80211_CHAN_NO_HT:
3214 case NL80211_CHAN_HT20:
3215 case NL80211_CHAN_HT40PLUS:
3216 case NL80211_CHAN_HT40MINUS:
3217 cfg80211_chandef_create(chandef, chandef->chan,
3218 chantype);
3219 /* user input for center_freq is incorrect */
3220 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3221 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3222 NL_SET_ERR_MSG_ATTR(extack,
3223 attrs[NL80211_ATTR_CENTER_FREQ1],
3224 "bad center frequency 1");
3225 return -EINVAL;
3226 }
3227 /* center_freq2 must be zero */
3228 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3229 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3230 NL_SET_ERR_MSG_ATTR(extack,
3231 attrs[NL80211_ATTR_CENTER_FREQ2],
3232 "center frequency 2 can't be used");
3233 return -EINVAL;
3234 }
3235 break;
3236 default:
3237 NL_SET_ERR_MSG_ATTR(extack,
3238 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3239 "invalid channel type");
3240 return -EINVAL;
3241 }
3242 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3243 chandef->width =
3244 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3245 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3246 /* User input error for channel width doesn't match channel */
3247 if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3248 NL_SET_ERR_MSG_ATTR(extack,
3249 attrs[NL80211_ATTR_CHANNEL_WIDTH],
3250 "bad channel width");
3251 return -EINVAL;
3252 }
3253 }
3254 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3255 chandef->center_freq1 =
3256 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3257 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3258 chandef->freq1_offset = nla_get_u32(
3259 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3260 else
3261 chandef->freq1_offset = 0;
3262 }
3263 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3264 chandef->center_freq2 =
3265 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3266 }
3267
3268 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3269 chandef->edmg.channels =
3270 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3271
3272 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3273 chandef->edmg.bw_config =
3274 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3275 } else {
3276 chandef->edmg.bw_config = 0;
3277 chandef->edmg.channels = 0;
3278 }
3279
3280 if (!cfg80211_chandef_valid(chandef)) {
3281 NL_SET_ERR_MSG(extack, "invalid channel definition");
3282 return -EINVAL;
3283 }
3284
3285 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3286 IEEE80211_CHAN_DISABLED)) {
3287 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3288 return -EINVAL;
3289 }
3290
3291 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3292 chandef->width == NL80211_CHAN_WIDTH_10) &&
3293 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3294 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3295 return -EINVAL;
3296 }
3297
3298 return 0;
3299 }
3300
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info,int _link_id)3301 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3302 struct net_device *dev,
3303 struct genl_info *info,
3304 int _link_id)
3305 {
3306 struct cfg80211_chan_def chandef;
3307 int result;
3308 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3309 struct wireless_dev *wdev = NULL;
3310 int link_id = _link_id;
3311
3312 if (dev)
3313 wdev = dev->ieee80211_ptr;
3314 if (!nl80211_can_set_dev_channel(wdev))
3315 return -EOPNOTSUPP;
3316 if (wdev)
3317 iftype = wdev->iftype;
3318
3319 if (link_id < 0) {
3320 if (wdev && wdev->valid_links)
3321 return -EINVAL;
3322 link_id = 0;
3323 }
3324
3325 result = nl80211_parse_chandef(rdev, info, &chandef);
3326 if (result)
3327 return result;
3328
3329 switch (iftype) {
3330 case NL80211_IFTYPE_AP:
3331 case NL80211_IFTYPE_P2P_GO:
3332 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3333 iftype))
3334 return -EINVAL;
3335 if (wdev->links[link_id].ap.beacon_interval) {
3336 struct ieee80211_channel *cur_chan;
3337
3338 if (!dev || !rdev->ops->set_ap_chanwidth ||
3339 !(rdev->wiphy.features &
3340 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3341 return -EBUSY;
3342
3343 /* Only allow dynamic channel width changes */
3344 cur_chan = wdev->links[link_id].ap.chandef.chan;
3345 if (chandef.chan != cur_chan)
3346 return -EBUSY;
3347
3348 result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3349 &chandef);
3350 if (result)
3351 return result;
3352 wdev->links[link_id].ap.chandef = chandef;
3353 } else {
3354 wdev->u.ap.preset_chandef = chandef;
3355 }
3356 return 0;
3357 case NL80211_IFTYPE_MESH_POINT:
3358 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3359 case NL80211_IFTYPE_MONITOR:
3360 return cfg80211_set_monitor_channel(rdev, &chandef);
3361 default:
3362 break;
3363 }
3364
3365 return -EINVAL;
3366 }
3367
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)3368 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3369 {
3370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3371 int link_id = nl80211_link_id_or_invalid(info->attrs);
3372 struct net_device *netdev = info->user_ptr[1];
3373 int ret;
3374
3375 wdev_lock(netdev->ieee80211_ptr);
3376 ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3377 wdev_unlock(netdev->ieee80211_ptr);
3378
3379 return ret;
3380 }
3381
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)3382 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3383 {
3384 struct cfg80211_registered_device *rdev = NULL;
3385 struct net_device *netdev = NULL;
3386 struct wireless_dev *wdev;
3387 int result = 0, rem_txq_params = 0;
3388 struct nlattr *nl_txq_params;
3389 u32 changed;
3390 u8 retry_short = 0, retry_long = 0;
3391 u32 frag_threshold = 0, rts_threshold = 0;
3392 u8 coverage_class = 0;
3393 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3394
3395 rtnl_lock();
3396 /*
3397 * Try to find the wiphy and netdev. Normally this
3398 * function shouldn't need the netdev, but this is
3399 * done for backward compatibility -- previously
3400 * setting the channel was done per wiphy, but now
3401 * it is per netdev. Previous userland like hostapd
3402 * also passed a netdev to set_wiphy, so that it is
3403 * possible to let that go to the right netdev!
3404 */
3405
3406 if (info->attrs[NL80211_ATTR_IFINDEX]) {
3407 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3408
3409 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3410 if (netdev && netdev->ieee80211_ptr)
3411 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3412 else
3413 netdev = NULL;
3414 }
3415
3416 if (!netdev) {
3417 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3418 info->attrs);
3419 if (IS_ERR(rdev)) {
3420 rtnl_unlock();
3421 return PTR_ERR(rdev);
3422 }
3423 wdev = NULL;
3424 netdev = NULL;
3425 result = 0;
3426 } else
3427 wdev = netdev->ieee80211_ptr;
3428
3429 wiphy_lock(&rdev->wiphy);
3430
3431 /*
3432 * end workaround code, by now the rdev is available
3433 * and locked, and wdev may or may not be NULL.
3434 */
3435
3436 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3437 result = cfg80211_dev_rename(
3438 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3439 rtnl_unlock();
3440
3441 if (result)
3442 goto out;
3443
3444 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3445 struct ieee80211_txq_params txq_params;
3446 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3447
3448 if (!rdev->ops->set_txq_params) {
3449 result = -EOPNOTSUPP;
3450 goto out;
3451 }
3452
3453 if (!netdev) {
3454 result = -EINVAL;
3455 goto out;
3456 }
3457
3458 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3459 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3460 result = -EINVAL;
3461 goto out;
3462 }
3463
3464 if (!netif_running(netdev)) {
3465 result = -ENETDOWN;
3466 goto out;
3467 }
3468
3469 nla_for_each_nested(nl_txq_params,
3470 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3471 rem_txq_params) {
3472 result = nla_parse_nested_deprecated(tb,
3473 NL80211_TXQ_ATTR_MAX,
3474 nl_txq_params,
3475 txq_params_policy,
3476 info->extack);
3477 if (result)
3478 goto out;
3479 result = parse_txq_params(tb, &txq_params);
3480 if (result)
3481 goto out;
3482
3483 txq_params.link_id =
3484 nl80211_link_id_or_invalid(info->attrs);
3485
3486 wdev_lock(netdev->ieee80211_ptr);
3487 if (txq_params.link_id >= 0 &&
3488 !(netdev->ieee80211_ptr->valid_links &
3489 BIT(txq_params.link_id)))
3490 result = -ENOLINK;
3491 else if (txq_params.link_id >= 0 &&
3492 !netdev->ieee80211_ptr->valid_links)
3493 result = -EINVAL;
3494 else
3495 result = rdev_set_txq_params(rdev, netdev,
3496 &txq_params);
3497 wdev_unlock(netdev->ieee80211_ptr);
3498 if (result)
3499 goto out;
3500 }
3501 }
3502
3503 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3504 int link_id = nl80211_link_id_or_invalid(info->attrs);
3505
3506 if (wdev) {
3507 wdev_lock(wdev);
3508 result = __nl80211_set_channel(
3509 rdev,
3510 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3511 info, link_id);
3512 wdev_unlock(wdev);
3513 } else {
3514 result = __nl80211_set_channel(rdev, netdev, info, link_id);
3515 }
3516
3517 if (result)
3518 goto out;
3519 }
3520
3521 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3522 struct wireless_dev *txp_wdev = wdev;
3523 enum nl80211_tx_power_setting type;
3524 int idx, mbm = 0;
3525
3526 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3527 txp_wdev = NULL;
3528
3529 if (!rdev->ops->set_tx_power) {
3530 result = -EOPNOTSUPP;
3531 goto out;
3532 }
3533
3534 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3535 type = nla_get_u32(info->attrs[idx]);
3536
3537 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3538 (type != NL80211_TX_POWER_AUTOMATIC)) {
3539 result = -EINVAL;
3540 goto out;
3541 }
3542
3543 if (type != NL80211_TX_POWER_AUTOMATIC) {
3544 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3545 mbm = nla_get_u32(info->attrs[idx]);
3546 }
3547
3548 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3549 if (result)
3550 goto out;
3551 }
3552
3553 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3554 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3555 u32 tx_ant, rx_ant;
3556
3557 if ((!rdev->wiphy.available_antennas_tx &&
3558 !rdev->wiphy.available_antennas_rx) ||
3559 !rdev->ops->set_antenna) {
3560 result = -EOPNOTSUPP;
3561 goto out;
3562 }
3563
3564 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3565 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3566
3567 /* reject antenna configurations which don't match the
3568 * available antenna masks, except for the "all" mask */
3569 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3570 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3571 result = -EINVAL;
3572 goto out;
3573 }
3574
3575 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3576 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3577
3578 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3579 if (result)
3580 goto out;
3581 }
3582
3583 changed = 0;
3584
3585 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3586 retry_short = nla_get_u8(
3587 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3588
3589 changed |= WIPHY_PARAM_RETRY_SHORT;
3590 }
3591
3592 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3593 retry_long = nla_get_u8(
3594 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3595
3596 changed |= WIPHY_PARAM_RETRY_LONG;
3597 }
3598
3599 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3600 frag_threshold = nla_get_u32(
3601 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3602 if (frag_threshold < 256) {
3603 result = -EINVAL;
3604 goto out;
3605 }
3606
3607 if (frag_threshold != (u32) -1) {
3608 /*
3609 * Fragments (apart from the last one) are required to
3610 * have even length. Make the fragmentation code
3611 * simpler by stripping LSB should someone try to use
3612 * odd threshold value.
3613 */
3614 frag_threshold &= ~0x1;
3615 }
3616 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3617 }
3618
3619 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3620 rts_threshold = nla_get_u32(
3621 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3622 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3623 }
3624
3625 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3626 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3627 result = -EINVAL;
3628 goto out;
3629 }
3630
3631 coverage_class = nla_get_u8(
3632 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3633 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3634 }
3635
3636 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3637 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3638 result = -EOPNOTSUPP;
3639 goto out;
3640 }
3641
3642 changed |= WIPHY_PARAM_DYN_ACK;
3643 }
3644
3645 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3646 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3647 NL80211_EXT_FEATURE_TXQS)) {
3648 result = -EOPNOTSUPP;
3649 goto out;
3650 }
3651 txq_limit = nla_get_u32(
3652 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3653 changed |= WIPHY_PARAM_TXQ_LIMIT;
3654 }
3655
3656 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3657 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3658 NL80211_EXT_FEATURE_TXQS)) {
3659 result = -EOPNOTSUPP;
3660 goto out;
3661 }
3662 txq_memory_limit = nla_get_u32(
3663 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3664 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3665 }
3666
3667 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3668 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3669 NL80211_EXT_FEATURE_TXQS)) {
3670 result = -EOPNOTSUPP;
3671 goto out;
3672 }
3673 txq_quantum = nla_get_u32(
3674 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3675 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3676 }
3677
3678 if (changed) {
3679 u8 old_retry_short, old_retry_long;
3680 u32 old_frag_threshold, old_rts_threshold;
3681 u8 old_coverage_class;
3682 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3683
3684 if (!rdev->ops->set_wiphy_params) {
3685 result = -EOPNOTSUPP;
3686 goto out;
3687 }
3688
3689 old_retry_short = rdev->wiphy.retry_short;
3690 old_retry_long = rdev->wiphy.retry_long;
3691 old_frag_threshold = rdev->wiphy.frag_threshold;
3692 old_rts_threshold = rdev->wiphy.rts_threshold;
3693 old_coverage_class = rdev->wiphy.coverage_class;
3694 old_txq_limit = rdev->wiphy.txq_limit;
3695 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3696 old_txq_quantum = rdev->wiphy.txq_quantum;
3697
3698 if (changed & WIPHY_PARAM_RETRY_SHORT)
3699 rdev->wiphy.retry_short = retry_short;
3700 if (changed & WIPHY_PARAM_RETRY_LONG)
3701 rdev->wiphy.retry_long = retry_long;
3702 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3703 rdev->wiphy.frag_threshold = frag_threshold;
3704 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3705 rdev->wiphy.rts_threshold = rts_threshold;
3706 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3707 rdev->wiphy.coverage_class = coverage_class;
3708 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3709 rdev->wiphy.txq_limit = txq_limit;
3710 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3711 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3712 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3713 rdev->wiphy.txq_quantum = txq_quantum;
3714
3715 result = rdev_set_wiphy_params(rdev, changed);
3716 if (result) {
3717 rdev->wiphy.retry_short = old_retry_short;
3718 rdev->wiphy.retry_long = old_retry_long;
3719 rdev->wiphy.frag_threshold = old_frag_threshold;
3720 rdev->wiphy.rts_threshold = old_rts_threshold;
3721 rdev->wiphy.coverage_class = old_coverage_class;
3722 rdev->wiphy.txq_limit = old_txq_limit;
3723 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3724 rdev->wiphy.txq_quantum = old_txq_quantum;
3725 goto out;
3726 }
3727 }
3728
3729 result = 0;
3730
3731 out:
3732 wiphy_unlock(&rdev->wiphy);
3733 return result;
3734 }
3735
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3736 static int nl80211_send_chandef(struct sk_buff *msg,
3737 const struct cfg80211_chan_def *chandef)
3738 {
3739 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3740 return -EINVAL;
3741
3742 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3743 chandef->chan->center_freq))
3744 return -ENOBUFS;
3745 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3746 chandef->chan->freq_offset))
3747 return -ENOBUFS;
3748 switch (chandef->width) {
3749 case NL80211_CHAN_WIDTH_20_NOHT:
3750 case NL80211_CHAN_WIDTH_20:
3751 case NL80211_CHAN_WIDTH_40:
3752 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3753 cfg80211_get_chandef_type(chandef)))
3754 return -ENOBUFS;
3755 break;
3756 default:
3757 break;
3758 }
3759 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3760 return -ENOBUFS;
3761 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3762 return -ENOBUFS;
3763 if (chandef->center_freq2 &&
3764 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3765 return -ENOBUFS;
3766 return 0;
3767 }
3768
nl80211_send_iface(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)3769 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3770 struct cfg80211_registered_device *rdev,
3771 struct wireless_dev *wdev,
3772 enum nl80211_commands cmd)
3773 {
3774 struct net_device *dev = wdev->netdev;
3775 void *hdr;
3776
3777 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3778 cmd != NL80211_CMD_DEL_INTERFACE &&
3779 cmd != NL80211_CMD_SET_INTERFACE);
3780
3781 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3782 if (!hdr)
3783 return -1;
3784
3785 if (dev &&
3786 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3787 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3788 goto nla_put_failure;
3789
3790 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3791 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3792 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3793 NL80211_ATTR_PAD) ||
3794 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3795 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3796 rdev->devlist_generation ^
3797 (cfg80211_rdev_list_generation << 2)) ||
3798 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3799 goto nla_put_failure;
3800
3801 if (rdev->ops->get_channel && !wdev->valid_links) {
3802 struct cfg80211_chan_def chandef = {};
3803 int ret;
3804
3805 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3806 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3807 goto nla_put_failure;
3808 }
3809
3810 if (rdev->ops->get_tx_power) {
3811 int dbm, ret;
3812
3813 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3814 if (ret == 0 &&
3815 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3816 DBM_TO_MBM(dbm)))
3817 goto nla_put_failure;
3818 }
3819
3820 wdev_lock(wdev);
3821 switch (wdev->iftype) {
3822 case NL80211_IFTYPE_AP:
3823 case NL80211_IFTYPE_P2P_GO:
3824 if (wdev->u.ap.ssid_len &&
3825 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3826 wdev->u.ap.ssid))
3827 goto nla_put_failure_locked;
3828 break;
3829 case NL80211_IFTYPE_STATION:
3830 case NL80211_IFTYPE_P2P_CLIENT:
3831 if (wdev->u.client.ssid_len &&
3832 nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3833 wdev->u.client.ssid))
3834 goto nla_put_failure_locked;
3835 break;
3836 case NL80211_IFTYPE_ADHOC:
3837 if (wdev->u.ibss.ssid_len &&
3838 nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3839 wdev->u.ibss.ssid))
3840 goto nla_put_failure_locked;
3841 break;
3842 default:
3843 /* nothing */
3844 break;
3845 }
3846 wdev_unlock(wdev);
3847
3848 if (rdev->ops->get_txq_stats) {
3849 struct cfg80211_txq_stats txqstats = {};
3850 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3851
3852 if (ret == 0 &&
3853 !nl80211_put_txq_stats(msg, &txqstats,
3854 NL80211_ATTR_TXQ_STATS))
3855 goto nla_put_failure;
3856 }
3857
3858 if (wdev->valid_links) {
3859 unsigned int link_id;
3860 struct nlattr *links = nla_nest_start(msg,
3861 NL80211_ATTR_MLO_LINKS);
3862
3863 if (!links)
3864 goto nla_put_failure;
3865
3866 for_each_valid_link(wdev, link_id) {
3867 struct nlattr *link = nla_nest_start(msg, link_id + 1);
3868 struct cfg80211_chan_def chandef = {};
3869 int ret;
3870
3871 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3872 goto nla_put_failure;
3873 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3874 wdev->links[link_id].addr))
3875 goto nla_put_failure;
3876
3877 ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3878 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3879 goto nla_put_failure;
3880
3881 nla_nest_end(msg, link);
3882 }
3883
3884 nla_nest_end(msg, links);
3885 }
3886
3887 genlmsg_end(msg, hdr);
3888 return 0;
3889
3890 nla_put_failure_locked:
3891 wdev_unlock(wdev);
3892 nla_put_failure:
3893 genlmsg_cancel(msg, hdr);
3894 return -EMSGSIZE;
3895 }
3896
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3897 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3898 {
3899 int wp_idx = 0;
3900 int if_idx = 0;
3901 int wp_start = cb->args[0];
3902 int if_start = cb->args[1];
3903 int filter_wiphy = -1;
3904 struct cfg80211_registered_device *rdev;
3905 struct wireless_dev *wdev;
3906 int ret;
3907
3908 rtnl_lock();
3909 if (!cb->args[2]) {
3910 struct nl80211_dump_wiphy_state state = {
3911 .filter_wiphy = -1,
3912 };
3913
3914 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3915 if (ret)
3916 goto out_unlock;
3917
3918 filter_wiphy = state.filter_wiphy;
3919
3920 /*
3921 * if filtering, set cb->args[2] to +1 since 0 is the default
3922 * value needed to determine that parsing is necessary.
3923 */
3924 if (filter_wiphy >= 0)
3925 cb->args[2] = filter_wiphy + 1;
3926 else
3927 cb->args[2] = -1;
3928 } else if (cb->args[2] > 0) {
3929 filter_wiphy = cb->args[2] - 1;
3930 }
3931
3932 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3933 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3934 continue;
3935 if (wp_idx < wp_start) {
3936 wp_idx++;
3937 continue;
3938 }
3939
3940 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3941 continue;
3942
3943 if_idx = 0;
3944
3945 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3946 if (if_idx < if_start) {
3947 if_idx++;
3948 continue;
3949 }
3950 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3951 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3952 rdev, wdev,
3953 NL80211_CMD_NEW_INTERFACE) < 0) {
3954 goto out;
3955 }
3956 if_idx++;
3957 }
3958
3959 wp_idx++;
3960 }
3961 out:
3962 cb->args[0] = wp_idx;
3963 cb->args[1] = if_idx;
3964
3965 ret = skb->len;
3966 out_unlock:
3967 rtnl_unlock();
3968
3969 return ret;
3970 }
3971
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)3972 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3973 {
3974 struct sk_buff *msg;
3975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3976 struct wireless_dev *wdev = info->user_ptr[1];
3977
3978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3979 if (!msg)
3980 return -ENOMEM;
3981
3982 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3983 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3984 nlmsg_free(msg);
3985 return -ENOBUFS;
3986 }
3987
3988 return genlmsg_reply(msg, info);
3989 }
3990
3991 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3992 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3993 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3994 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3995 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3996 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3997 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3998 };
3999
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)4000 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4001 {
4002 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4003 int flag;
4004
4005 *mntrflags = 0;
4006
4007 if (!nla)
4008 return -EINVAL;
4009
4010 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4011 return -EINVAL;
4012
4013 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4014 if (flags[flag])
4015 *mntrflags |= (1<<flag);
4016
4017 *mntrflags |= MONITOR_FLAG_CHANGED;
4018
4019 return 0;
4020 }
4021
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)4022 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4023 enum nl80211_iftype type,
4024 struct genl_info *info,
4025 struct vif_params *params)
4026 {
4027 bool change = false;
4028 int err;
4029
4030 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4031 if (type != NL80211_IFTYPE_MONITOR)
4032 return -EINVAL;
4033
4034 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4035 ¶ms->flags);
4036 if (err)
4037 return err;
4038
4039 change = true;
4040 }
4041
4042 if (params->flags & MONITOR_FLAG_ACTIVE &&
4043 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4044 return -EOPNOTSUPP;
4045
4046 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4047 const u8 *mumimo_groups;
4048 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4049
4050 if (type != NL80211_IFTYPE_MONITOR)
4051 return -EINVAL;
4052
4053 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4054 return -EOPNOTSUPP;
4055
4056 mumimo_groups =
4057 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4058
4059 /* bits 0 and 63 are reserved and must be zero */
4060 if ((mumimo_groups[0] & BIT(0)) ||
4061 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4062 return -EINVAL;
4063
4064 params->vht_mumimo_groups = mumimo_groups;
4065 change = true;
4066 }
4067
4068 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4069 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4070
4071 if (type != NL80211_IFTYPE_MONITOR)
4072 return -EINVAL;
4073
4074 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4075 return -EOPNOTSUPP;
4076
4077 params->vht_mumimo_follow_addr =
4078 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4079 change = true;
4080 }
4081
4082 return change ? 1 : 0;
4083 }
4084
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)4085 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4086 struct net_device *netdev, u8 use_4addr,
4087 enum nl80211_iftype iftype)
4088 {
4089 if (!use_4addr) {
4090 if (netdev && netif_is_bridge_port(netdev))
4091 return -EBUSY;
4092 return 0;
4093 }
4094
4095 switch (iftype) {
4096 case NL80211_IFTYPE_AP_VLAN:
4097 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4098 return 0;
4099 break;
4100 case NL80211_IFTYPE_STATION:
4101 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4102 return 0;
4103 break;
4104 default:
4105 break;
4106 }
4107
4108 return -EOPNOTSUPP;
4109 }
4110
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)4111 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4112 {
4113 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4114 struct vif_params params;
4115 int err;
4116 enum nl80211_iftype otype, ntype;
4117 struct net_device *dev = info->user_ptr[1];
4118 bool change = false;
4119
4120 memset(¶ms, 0, sizeof(params));
4121
4122 otype = ntype = dev->ieee80211_ptr->iftype;
4123
4124 if (info->attrs[NL80211_ATTR_IFTYPE]) {
4125 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4126 if (otype != ntype)
4127 change = true;
4128 }
4129
4130 if (info->attrs[NL80211_ATTR_MESH_ID]) {
4131 struct wireless_dev *wdev = dev->ieee80211_ptr;
4132
4133 if (ntype != NL80211_IFTYPE_MESH_POINT)
4134 return -EINVAL;
4135 if (netif_running(dev))
4136 return -EBUSY;
4137
4138 wdev_lock(wdev);
4139 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4140 IEEE80211_MAX_MESH_ID_LEN);
4141 wdev->u.mesh.id_up_len =
4142 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4143 memcpy(wdev->u.mesh.id,
4144 nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4145 wdev->u.mesh.id_up_len);
4146 wdev_unlock(wdev);
4147 }
4148
4149 if (info->attrs[NL80211_ATTR_4ADDR]) {
4150 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4151 change = true;
4152 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4153 if (err)
4154 return err;
4155 } else {
4156 params.use_4addr = -1;
4157 }
4158
4159 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
4160 if (err < 0)
4161 return err;
4162 if (err > 0)
4163 change = true;
4164
4165 if (change)
4166 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
4167 else
4168 err = 0;
4169
4170 if (!err && params.use_4addr != -1)
4171 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4172
4173 if (change && !err) {
4174 struct wireless_dev *wdev = dev->ieee80211_ptr;
4175
4176 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4177 }
4178
4179 return err;
4180 }
4181
_nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)4182 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4183 {
4184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4185 struct vif_params params;
4186 struct wireless_dev *wdev;
4187 struct sk_buff *msg;
4188 int err;
4189 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4190
4191 memset(¶ms, 0, sizeof(params));
4192
4193 if (!info->attrs[NL80211_ATTR_IFNAME])
4194 return -EINVAL;
4195
4196 if (info->attrs[NL80211_ATTR_IFTYPE])
4197 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4198
4199 if (!rdev->ops->add_virtual_intf)
4200 return -EOPNOTSUPP;
4201
4202 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4203 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4204 info->attrs[NL80211_ATTR_MAC]) {
4205 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4206 ETH_ALEN);
4207 if (!is_valid_ether_addr(params.macaddr))
4208 return -EADDRNOTAVAIL;
4209 }
4210
4211 if (info->attrs[NL80211_ATTR_4ADDR]) {
4212 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4213 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4214 if (err)
4215 return err;
4216 }
4217
4218 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4219 return -EOPNOTSUPP;
4220
4221 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
4222 if (err < 0)
4223 return err;
4224
4225 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4226 if (!msg)
4227 return -ENOMEM;
4228
4229 wdev = rdev_add_virtual_intf(rdev,
4230 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4231 NET_NAME_USER, type, ¶ms);
4232 if (WARN_ON(!wdev)) {
4233 nlmsg_free(msg);
4234 return -EPROTO;
4235 } else if (IS_ERR(wdev)) {
4236 nlmsg_free(msg);
4237 return PTR_ERR(wdev);
4238 }
4239
4240 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4241 wdev->owner_nlportid = info->snd_portid;
4242
4243 switch (type) {
4244 case NL80211_IFTYPE_MESH_POINT:
4245 if (!info->attrs[NL80211_ATTR_MESH_ID])
4246 break;
4247 wdev_lock(wdev);
4248 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4249 IEEE80211_MAX_MESH_ID_LEN);
4250 wdev->u.mesh.id_up_len =
4251 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4252 memcpy(wdev->u.mesh.id,
4253 nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4254 wdev->u.mesh.id_up_len);
4255 wdev_unlock(wdev);
4256 break;
4257 case NL80211_IFTYPE_NAN:
4258 case NL80211_IFTYPE_P2P_DEVICE:
4259 /*
4260 * P2P Device and NAN do not have a netdev, so don't go
4261 * through the netdev notifier and must be added here
4262 */
4263 cfg80211_init_wdev(wdev);
4264 cfg80211_register_wdev(rdev, wdev);
4265 break;
4266 default:
4267 break;
4268 }
4269
4270 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4271 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4272 nlmsg_free(msg);
4273 return -ENOBUFS;
4274 }
4275
4276 return genlmsg_reply(msg, info);
4277 }
4278
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)4279 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4280 {
4281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4282 int ret;
4283
4284 /* to avoid failing a new interface creation due to pending removal */
4285 cfg80211_destroy_ifaces(rdev);
4286
4287 wiphy_lock(&rdev->wiphy);
4288 ret = _nl80211_new_interface(skb, info);
4289 wiphy_unlock(&rdev->wiphy);
4290
4291 return ret;
4292 }
4293
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)4294 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4295 {
4296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4297 struct wireless_dev *wdev = info->user_ptr[1];
4298
4299 if (!rdev->ops->del_virtual_intf)
4300 return -EOPNOTSUPP;
4301
4302 /*
4303 * We hold RTNL, so this is safe, without RTNL opencount cannot
4304 * reach 0, and thus the rdev cannot be deleted.
4305 *
4306 * We need to do it for the dev_close(), since that will call
4307 * the netdev notifiers, and we need to acquire the mutex there
4308 * but don't know if we get there from here or from some other
4309 * place (e.g. "ip link set ... down").
4310 */
4311 mutex_unlock(&rdev->wiphy.mtx);
4312
4313 /*
4314 * If we remove a wireless device without a netdev then clear
4315 * user_ptr[1] so that nl80211_post_doit won't dereference it
4316 * to check if it needs to do dev_put(). Otherwise it crashes
4317 * since the wdev has been freed, unlike with a netdev where
4318 * we need the dev_put() for the netdev to really be freed.
4319 */
4320 if (!wdev->netdev)
4321 info->user_ptr[1] = NULL;
4322 else
4323 dev_close(wdev->netdev);
4324
4325 mutex_lock(&rdev->wiphy.mtx);
4326
4327 return cfg80211_remove_virtual_intf(rdev, wdev);
4328 }
4329
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)4330 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4331 {
4332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4333 struct net_device *dev = info->user_ptr[1];
4334 u16 noack_map;
4335
4336 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4337 return -EINVAL;
4338
4339 if (!rdev->ops->set_noack_map)
4340 return -EOPNOTSUPP;
4341
4342 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4343
4344 return rdev_set_noack_map(rdev, dev, noack_map);
4345 }
4346
nl80211_validate_key_link_id(struct genl_info * info,struct wireless_dev * wdev,int link_id,bool pairwise)4347 static int nl80211_validate_key_link_id(struct genl_info *info,
4348 struct wireless_dev *wdev,
4349 int link_id, bool pairwise)
4350 {
4351 if (pairwise) {
4352 if (link_id != -1) {
4353 GENL_SET_ERR_MSG(info,
4354 "link ID not allowed for pairwise key");
4355 return -EINVAL;
4356 }
4357
4358 return 0;
4359 }
4360
4361 if (wdev->valid_links) {
4362 if (link_id == -1) {
4363 GENL_SET_ERR_MSG(info,
4364 "link ID must for MLO group key");
4365 return -EINVAL;
4366 }
4367 if (!(wdev->valid_links & BIT(link_id))) {
4368 GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4369 return -EINVAL;
4370 }
4371 } else if (link_id != -1) {
4372 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4373 return -EINVAL;
4374 }
4375
4376 return 0;
4377 }
4378
4379 struct get_key_cookie {
4380 struct sk_buff *msg;
4381 int error;
4382 int idx;
4383 };
4384
get_key_callback(void * c,struct key_params * params)4385 static void get_key_callback(void *c, struct key_params *params)
4386 {
4387 struct nlattr *key;
4388 struct get_key_cookie *cookie = c;
4389
4390 if ((params->key &&
4391 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4392 params->key_len, params->key)) ||
4393 (params->seq &&
4394 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4395 params->seq_len, params->seq)) ||
4396 (params->cipher &&
4397 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4398 params->cipher)))
4399 goto nla_put_failure;
4400
4401 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4402 if (!key)
4403 goto nla_put_failure;
4404
4405 if ((params->key &&
4406 nla_put(cookie->msg, NL80211_KEY_DATA,
4407 params->key_len, params->key)) ||
4408 (params->seq &&
4409 nla_put(cookie->msg, NL80211_KEY_SEQ,
4410 params->seq_len, params->seq)) ||
4411 (params->cipher &&
4412 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4413 params->cipher)))
4414 goto nla_put_failure;
4415
4416 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4417 goto nla_put_failure;
4418
4419 nla_nest_end(cookie->msg, key);
4420
4421 return;
4422 nla_put_failure:
4423 cookie->error = 1;
4424 }
4425
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)4426 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4427 {
4428 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4429 int err;
4430 struct net_device *dev = info->user_ptr[1];
4431 u8 key_idx = 0;
4432 const u8 *mac_addr = NULL;
4433 bool pairwise;
4434 struct get_key_cookie cookie = {
4435 .error = 0,
4436 };
4437 void *hdr;
4438 struct sk_buff *msg;
4439 bool bigtk_support = false;
4440 int link_id = nl80211_link_id_or_invalid(info->attrs);
4441 struct wireless_dev *wdev = dev->ieee80211_ptr;
4442
4443 if (wiphy_ext_feature_isset(&rdev->wiphy,
4444 NL80211_EXT_FEATURE_BEACON_PROTECTION))
4445 bigtk_support = true;
4446
4447 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4448 wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4449 wiphy_ext_feature_isset(&rdev->wiphy,
4450 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4451 bigtk_support = true;
4452
4453 if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4454 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4455
4456 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4457 GENL_SET_ERR_MSG(info, "BIGTK not supported");
4458 return -EINVAL;
4459 }
4460 }
4461
4462 if (info->attrs[NL80211_ATTR_MAC])
4463 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4464
4465 pairwise = !!mac_addr;
4466 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4467 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4468
4469 if (kt != NL80211_KEYTYPE_GROUP &&
4470 kt != NL80211_KEYTYPE_PAIRWISE)
4471 return -EINVAL;
4472 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4473 }
4474
4475 if (!rdev->ops->get_key)
4476 return -EOPNOTSUPP;
4477
4478 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4479 return -ENOENT;
4480
4481 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4482 if (!msg)
4483 return -ENOMEM;
4484
4485 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4486 NL80211_CMD_NEW_KEY);
4487 if (!hdr)
4488 goto nla_put_failure;
4489
4490 cookie.msg = msg;
4491 cookie.idx = key_idx;
4492
4493 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4494 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4495 goto nla_put_failure;
4496 if (mac_addr &&
4497 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4498 goto nla_put_failure;
4499
4500 err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4501 if (err)
4502 goto free_msg;
4503
4504 err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4505 &cookie, get_key_callback);
4506
4507 if (err)
4508 goto free_msg;
4509
4510 if (cookie.error)
4511 goto nla_put_failure;
4512
4513 genlmsg_end(msg, hdr);
4514 return genlmsg_reply(msg, info);
4515
4516 nla_put_failure:
4517 err = -ENOBUFS;
4518 free_msg:
4519 nlmsg_free(msg);
4520 return err;
4521 }
4522
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)4523 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4524 {
4525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4526 struct key_parse key;
4527 int err;
4528 struct net_device *dev = info->user_ptr[1];
4529 int link_id = nl80211_link_id_or_invalid(info->attrs);
4530 struct wireless_dev *wdev = dev->ieee80211_ptr;
4531
4532 err = nl80211_parse_key(info, &key);
4533 if (err)
4534 return err;
4535
4536 if (key.idx < 0)
4537 return -EINVAL;
4538
4539 /* Only support setting default key and
4540 * Extended Key ID action NL80211_KEY_SET_TX.
4541 */
4542 if (!key.def && !key.defmgmt && !key.defbeacon &&
4543 !(key.p.mode == NL80211_KEY_SET_TX))
4544 return -EINVAL;
4545
4546 wdev_lock(wdev);
4547
4548 if (key.def) {
4549 if (!rdev->ops->set_default_key) {
4550 err = -EOPNOTSUPP;
4551 goto out;
4552 }
4553
4554 err = nl80211_key_allowed(wdev);
4555 if (err)
4556 goto out;
4557
4558 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4559 if (err)
4560 goto out;
4561
4562 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4563 key.def_uni, key.def_multi);
4564
4565 if (err)
4566 goto out;
4567
4568 #ifdef CONFIG_CFG80211_WEXT
4569 wdev->wext.default_key = key.idx;
4570 #endif
4571 } else if (key.defmgmt) {
4572 if (key.def_uni || !key.def_multi) {
4573 err = -EINVAL;
4574 goto out;
4575 }
4576
4577 if (!rdev->ops->set_default_mgmt_key) {
4578 err = -EOPNOTSUPP;
4579 goto out;
4580 }
4581
4582 err = nl80211_key_allowed(wdev);
4583 if (err)
4584 goto out;
4585
4586 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4587 if (err)
4588 goto out;
4589
4590 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4591 if (err)
4592 goto out;
4593
4594 #ifdef CONFIG_CFG80211_WEXT
4595 wdev->wext.default_mgmt_key = key.idx;
4596 #endif
4597 } else if (key.defbeacon) {
4598 if (key.def_uni || !key.def_multi) {
4599 err = -EINVAL;
4600 goto out;
4601 }
4602
4603 if (!rdev->ops->set_default_beacon_key) {
4604 err = -EOPNOTSUPP;
4605 goto out;
4606 }
4607
4608 err = nl80211_key_allowed(wdev);
4609 if (err)
4610 goto out;
4611
4612 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4613 if (err)
4614 goto out;
4615
4616 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4617 if (err)
4618 goto out;
4619 } else if (key.p.mode == NL80211_KEY_SET_TX &&
4620 wiphy_ext_feature_isset(&rdev->wiphy,
4621 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4622 u8 *mac_addr = NULL;
4623
4624 if (info->attrs[NL80211_ATTR_MAC])
4625 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4626
4627 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4628 err = -EINVAL;
4629 goto out;
4630 }
4631
4632 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4633 if (err)
4634 goto out;
4635
4636 err = rdev_add_key(rdev, dev, link_id, key.idx,
4637 NL80211_KEYTYPE_PAIRWISE,
4638 mac_addr, &key.p);
4639 } else {
4640 err = -EINVAL;
4641 }
4642 out:
4643 wdev_unlock(wdev);
4644
4645 return err;
4646 }
4647
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)4648 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4649 {
4650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4651 int err;
4652 struct net_device *dev = info->user_ptr[1];
4653 struct key_parse key;
4654 const u8 *mac_addr = NULL;
4655 int link_id = nl80211_link_id_or_invalid(info->attrs);
4656 struct wireless_dev *wdev = dev->ieee80211_ptr;
4657
4658 err = nl80211_parse_key(info, &key);
4659 if (err)
4660 return err;
4661
4662 if (!key.p.key) {
4663 GENL_SET_ERR_MSG(info, "no key");
4664 return -EINVAL;
4665 }
4666
4667 if (info->attrs[NL80211_ATTR_MAC])
4668 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4669
4670 if (key.type == -1) {
4671 if (mac_addr)
4672 key.type = NL80211_KEYTYPE_PAIRWISE;
4673 else
4674 key.type = NL80211_KEYTYPE_GROUP;
4675 }
4676
4677 /* for now */
4678 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4679 key.type != NL80211_KEYTYPE_GROUP) {
4680 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4681 return -EINVAL;
4682 }
4683
4684 if (key.type == NL80211_KEYTYPE_GROUP &&
4685 info->attrs[NL80211_ATTR_VLAN_ID])
4686 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4687
4688 if (!rdev->ops->add_key)
4689 return -EOPNOTSUPP;
4690
4691 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4692 key.type == NL80211_KEYTYPE_PAIRWISE,
4693 mac_addr)) {
4694 GENL_SET_ERR_MSG(info, "key setting validation failed");
4695 return -EINVAL;
4696 }
4697
4698 wdev_lock(wdev);
4699 err = nl80211_key_allowed(wdev);
4700 if (err)
4701 GENL_SET_ERR_MSG(info, "key not allowed");
4702
4703 if (!err)
4704 err = nl80211_validate_key_link_id(info, wdev, link_id,
4705 key.type == NL80211_KEYTYPE_PAIRWISE);
4706
4707 if (!err) {
4708 err = rdev_add_key(rdev, dev, link_id, key.idx,
4709 key.type == NL80211_KEYTYPE_PAIRWISE,
4710 mac_addr, &key.p);
4711 if (err)
4712 GENL_SET_ERR_MSG(info, "key addition failed");
4713 }
4714 wdev_unlock(wdev);
4715
4716 return err;
4717 }
4718
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)4719 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4720 {
4721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4722 int err;
4723 struct net_device *dev = info->user_ptr[1];
4724 u8 *mac_addr = NULL;
4725 struct key_parse key;
4726 int link_id = nl80211_link_id_or_invalid(info->attrs);
4727 struct wireless_dev *wdev = dev->ieee80211_ptr;
4728
4729 err = nl80211_parse_key(info, &key);
4730 if (err)
4731 return err;
4732
4733 if (info->attrs[NL80211_ATTR_MAC])
4734 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4735
4736 if (key.type == -1) {
4737 if (mac_addr)
4738 key.type = NL80211_KEYTYPE_PAIRWISE;
4739 else
4740 key.type = NL80211_KEYTYPE_GROUP;
4741 }
4742
4743 /* for now */
4744 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4745 key.type != NL80211_KEYTYPE_GROUP)
4746 return -EINVAL;
4747
4748 if (!cfg80211_valid_key_idx(rdev, key.idx,
4749 key.type == NL80211_KEYTYPE_PAIRWISE))
4750 return -EINVAL;
4751
4752 if (!rdev->ops->del_key)
4753 return -EOPNOTSUPP;
4754
4755 wdev_lock(wdev);
4756 err = nl80211_key_allowed(wdev);
4757
4758 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4759 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4760 err = -ENOENT;
4761
4762 if (!err)
4763 err = nl80211_validate_key_link_id(info, wdev, link_id,
4764 key.type == NL80211_KEYTYPE_PAIRWISE);
4765
4766 if (!err)
4767 err = rdev_del_key(rdev, dev, link_id, key.idx,
4768 key.type == NL80211_KEYTYPE_PAIRWISE,
4769 mac_addr);
4770
4771 #ifdef CONFIG_CFG80211_WEXT
4772 if (!err) {
4773 if (key.idx == wdev->wext.default_key)
4774 wdev->wext.default_key = -1;
4775 else if (key.idx == wdev->wext.default_mgmt_key)
4776 wdev->wext.default_mgmt_key = -1;
4777 }
4778 #endif
4779 wdev_unlock(wdev);
4780
4781 return err;
4782 }
4783
4784 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4785 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4786 {
4787 struct nlattr *attr;
4788 int n_entries = 0, tmp;
4789
4790 nla_for_each_nested(attr, nl_attr, tmp) {
4791 if (nla_len(attr) != ETH_ALEN)
4792 return -EINVAL;
4793
4794 n_entries++;
4795 }
4796
4797 return n_entries;
4798 }
4799
4800 /*
4801 * This function parses ACL information and allocates memory for ACL data.
4802 * On successful return, the calling function is responsible to free the
4803 * ACL buffer returned by this function.
4804 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4805 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4806 struct genl_info *info)
4807 {
4808 enum nl80211_acl_policy acl_policy;
4809 struct nlattr *attr;
4810 struct cfg80211_acl_data *acl;
4811 int i = 0, n_entries, tmp;
4812
4813 if (!wiphy->max_acl_mac_addrs)
4814 return ERR_PTR(-EOPNOTSUPP);
4815
4816 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4817 return ERR_PTR(-EINVAL);
4818
4819 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4820 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4821 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4822 return ERR_PTR(-EINVAL);
4823
4824 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4825 return ERR_PTR(-EINVAL);
4826
4827 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4828 if (n_entries < 0)
4829 return ERR_PTR(n_entries);
4830
4831 if (n_entries > wiphy->max_acl_mac_addrs)
4832 return ERR_PTR(-ENOTSUPP);
4833
4834 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4835 if (!acl)
4836 return ERR_PTR(-ENOMEM);
4837
4838 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4839 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4840 i++;
4841 }
4842
4843 acl->n_acl_entries = n_entries;
4844 acl->acl_policy = acl_policy;
4845
4846 return acl;
4847 }
4848
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4849 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4850 {
4851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4852 struct net_device *dev = info->user_ptr[1];
4853 struct cfg80211_acl_data *acl;
4854 int err;
4855
4856 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4857 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4858 return -EOPNOTSUPP;
4859
4860 if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4861 return -EINVAL;
4862
4863 acl = parse_acl_data(&rdev->wiphy, info);
4864 if (IS_ERR(acl))
4865 return PTR_ERR(acl);
4866
4867 err = rdev_set_mac_acl(rdev, dev, acl);
4868
4869 kfree(acl);
4870
4871 return err;
4872 }
4873
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4874 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4875 u8 *rates, u8 rates_len)
4876 {
4877 u8 i;
4878 u32 mask = 0;
4879
4880 for (i = 0; i < rates_len; i++) {
4881 int rate = (rates[i] & 0x7f) * 5;
4882 int ridx;
4883
4884 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4885 struct ieee80211_rate *srate =
4886 &sband->bitrates[ridx];
4887 if (rate == srate->bitrate) {
4888 mask |= 1 << ridx;
4889 break;
4890 }
4891 }
4892 if (ridx == sband->n_bitrates)
4893 return 0; /* rate not found */
4894 }
4895
4896 return mask;
4897 }
4898
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4899 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4900 u8 *rates, u8 rates_len,
4901 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4902 {
4903 u8 i;
4904
4905 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4906
4907 for (i = 0; i < rates_len; i++) {
4908 int ridx, rbit;
4909
4910 ridx = rates[i] / 8;
4911 rbit = BIT(rates[i] % 8);
4912
4913 /* check validity */
4914 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4915 return false;
4916
4917 /* check availability */
4918 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4919 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4920 mcs[ridx] |= rbit;
4921 else
4922 return false;
4923 }
4924
4925 return true;
4926 }
4927
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)4928 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4929 {
4930 u16 mcs_mask = 0;
4931
4932 switch (vht_mcs_map) {
4933 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4934 break;
4935 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4936 mcs_mask = 0x00FF;
4937 break;
4938 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4939 mcs_mask = 0x01FF;
4940 break;
4941 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4942 mcs_mask = 0x03FF;
4943 break;
4944 default:
4945 break;
4946 }
4947
4948 return mcs_mask;
4949 }
4950
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])4951 static void vht_build_mcs_mask(u16 vht_mcs_map,
4952 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4953 {
4954 u8 nss;
4955
4956 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4957 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4958 vht_mcs_map >>= 2;
4959 }
4960 }
4961
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])4962 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4963 struct nl80211_txrate_vht *txrate,
4964 u16 mcs[NL80211_VHT_NSS_MAX])
4965 {
4966 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4967 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4968 u8 i;
4969
4970 if (!sband->vht_cap.vht_supported)
4971 return false;
4972
4973 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4974
4975 /* Build vht_mcs_mask from VHT capabilities */
4976 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4977
4978 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4979 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4980 mcs[i] = txrate->mcs[i];
4981 else
4982 return false;
4983 }
4984
4985 return true;
4986 }
4987
he_mcs_map_to_mcs_mask(u8 he_mcs_map)4988 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4989 {
4990 switch (he_mcs_map) {
4991 case IEEE80211_HE_MCS_NOT_SUPPORTED:
4992 return 0;
4993 case IEEE80211_HE_MCS_SUPPORT_0_7:
4994 return 0x00FF;
4995 case IEEE80211_HE_MCS_SUPPORT_0_9:
4996 return 0x03FF;
4997 case IEEE80211_HE_MCS_SUPPORT_0_11:
4998 return 0xFFF;
4999 default:
5000 break;
5001 }
5002 return 0;
5003 }
5004
he_build_mcs_mask(u16 he_mcs_map,u16 he_mcs_mask[NL80211_HE_NSS_MAX])5005 static void he_build_mcs_mask(u16 he_mcs_map,
5006 u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5007 {
5008 u8 nss;
5009
5010 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5011 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5012 he_mcs_map >>= 2;
5013 }
5014 }
5015
he_get_txmcsmap(struct genl_info * info,unsigned int link_id,const struct ieee80211_sta_he_cap * he_cap)5016 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5017 const struct ieee80211_sta_he_cap *he_cap)
5018 {
5019 struct net_device *dev = info->user_ptr[1];
5020 struct wireless_dev *wdev = dev->ieee80211_ptr;
5021 struct cfg80211_chan_def *chandef;
5022 __le16 tx_mcs;
5023
5024 chandef = wdev_chandef(wdev, link_id);
5025 if (!chandef) {
5026 /*
5027 * This is probably broken, but we never maintained
5028 * a chandef in these cases, so it always was.
5029 */
5030 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5031 }
5032
5033 switch (chandef->width) {
5034 case NL80211_CHAN_WIDTH_80P80:
5035 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5036 break;
5037 case NL80211_CHAN_WIDTH_160:
5038 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5039 break;
5040 default:
5041 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5042 break;
5043 }
5044
5045 return le16_to_cpu(tx_mcs);
5046 }
5047
he_set_mcs_mask(struct genl_info * info,struct wireless_dev * wdev,struct ieee80211_supported_band * sband,struct nl80211_txrate_he * txrate,u16 mcs[NL80211_HE_NSS_MAX],unsigned int link_id)5048 static bool he_set_mcs_mask(struct genl_info *info,
5049 struct wireless_dev *wdev,
5050 struct ieee80211_supported_band *sband,
5051 struct nl80211_txrate_he *txrate,
5052 u16 mcs[NL80211_HE_NSS_MAX],
5053 unsigned int link_id)
5054 {
5055 const struct ieee80211_sta_he_cap *he_cap;
5056 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5057 u16 tx_mcs_map = 0;
5058 u8 i;
5059
5060 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5061 if (!he_cap)
5062 return false;
5063
5064 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5065
5066 tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5067
5068 /* Build he_mcs_mask from HE capabilities */
5069 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5070
5071 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5072 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5073 mcs[i] = txrate->mcs[i];
5074 else
5075 return false;
5076 }
5077
5078 return true;
5079 }
5080
nl80211_parse_tx_bitrate_mask(struct genl_info * info,struct nlattr * attrs[],enum nl80211_attrs attr,struct cfg80211_bitrate_mask * mask,struct net_device * dev,bool default_all_enabled,unsigned int link_id)5081 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5082 struct nlattr *attrs[],
5083 enum nl80211_attrs attr,
5084 struct cfg80211_bitrate_mask *mask,
5085 struct net_device *dev,
5086 bool default_all_enabled,
5087 unsigned int link_id)
5088 {
5089 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5091 struct wireless_dev *wdev = dev->ieee80211_ptr;
5092 int rem, i;
5093 struct nlattr *tx_rates;
5094 struct ieee80211_supported_band *sband;
5095 u16 vht_tx_mcs_map, he_tx_mcs_map;
5096
5097 memset(mask, 0, sizeof(*mask));
5098 /* Default to all rates enabled */
5099 for (i = 0; i < NUM_NL80211_BANDS; i++) {
5100 const struct ieee80211_sta_he_cap *he_cap;
5101
5102 if (!default_all_enabled)
5103 break;
5104
5105 sband = rdev->wiphy.bands[i];
5106
5107 if (!sband)
5108 continue;
5109
5110 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5111 memcpy(mask->control[i].ht_mcs,
5112 sband->ht_cap.mcs.rx_mask,
5113 sizeof(mask->control[i].ht_mcs));
5114
5115 if (sband->vht_cap.vht_supported) {
5116 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5117 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5118 }
5119
5120 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5121 if (!he_cap)
5122 continue;
5123
5124 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5125 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5126
5127 mask->control[i].he_gi = 0xFF;
5128 mask->control[i].he_ltf = 0xFF;
5129 }
5130
5131 /* if no rates are given set it back to the defaults */
5132 if (!attrs[attr])
5133 goto out;
5134
5135 /* The nested attribute uses enum nl80211_band as the index. This maps
5136 * directly to the enum nl80211_band values used in cfg80211.
5137 */
5138 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5139 nla_for_each_nested(tx_rates, attrs[attr], rem) {
5140 enum nl80211_band band = nla_type(tx_rates);
5141 int err;
5142
5143 if (band < 0 || band >= NUM_NL80211_BANDS)
5144 return -EINVAL;
5145 sband = rdev->wiphy.bands[band];
5146 if (sband == NULL)
5147 return -EINVAL;
5148 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5149 tx_rates,
5150 nl80211_txattr_policy,
5151 info->extack);
5152 if (err)
5153 return err;
5154 if (tb[NL80211_TXRATE_LEGACY]) {
5155 mask->control[band].legacy = rateset_to_mask(
5156 sband,
5157 nla_data(tb[NL80211_TXRATE_LEGACY]),
5158 nla_len(tb[NL80211_TXRATE_LEGACY]));
5159 if ((mask->control[band].legacy == 0) &&
5160 nla_len(tb[NL80211_TXRATE_LEGACY]))
5161 return -EINVAL;
5162 }
5163 if (tb[NL80211_TXRATE_HT]) {
5164 if (!ht_rateset_to_mask(
5165 sband,
5166 nla_data(tb[NL80211_TXRATE_HT]),
5167 nla_len(tb[NL80211_TXRATE_HT]),
5168 mask->control[band].ht_mcs))
5169 return -EINVAL;
5170 }
5171
5172 if (tb[NL80211_TXRATE_VHT]) {
5173 if (!vht_set_mcs_mask(
5174 sband,
5175 nla_data(tb[NL80211_TXRATE_VHT]),
5176 mask->control[band].vht_mcs))
5177 return -EINVAL;
5178 }
5179
5180 if (tb[NL80211_TXRATE_GI]) {
5181 mask->control[band].gi =
5182 nla_get_u8(tb[NL80211_TXRATE_GI]);
5183 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5184 return -EINVAL;
5185 }
5186 if (tb[NL80211_TXRATE_HE] &&
5187 !he_set_mcs_mask(info, wdev, sband,
5188 nla_data(tb[NL80211_TXRATE_HE]),
5189 mask->control[band].he_mcs,
5190 link_id))
5191 return -EINVAL;
5192
5193 if (tb[NL80211_TXRATE_HE_GI])
5194 mask->control[band].he_gi =
5195 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5196 if (tb[NL80211_TXRATE_HE_LTF])
5197 mask->control[band].he_ltf =
5198 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5199
5200 if (mask->control[band].legacy == 0) {
5201 /* don't allow empty legacy rates if HT, VHT or HE
5202 * are not even supported.
5203 */
5204 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5205 rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5206 ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5207 return -EINVAL;
5208
5209 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5210 if (mask->control[band].ht_mcs[i])
5211 goto out;
5212
5213 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5214 if (mask->control[band].vht_mcs[i])
5215 goto out;
5216
5217 for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5218 if (mask->control[band].he_mcs[i])
5219 goto out;
5220
5221 /* legacy and mcs rates may not be both empty */
5222 return -EINVAL;
5223 }
5224 }
5225
5226 out:
5227 return 0;
5228 }
5229
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)5230 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5231 enum nl80211_band band,
5232 struct cfg80211_bitrate_mask *beacon_rate)
5233 {
5234 u32 count_ht, count_vht, count_he, i;
5235 u32 rate = beacon_rate->control[band].legacy;
5236
5237 /* Allow only one rate */
5238 if (hweight32(rate) > 1)
5239 return -EINVAL;
5240
5241 count_ht = 0;
5242 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5243 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5244 return -EINVAL;
5245 } else if (beacon_rate->control[band].ht_mcs[i]) {
5246 count_ht++;
5247 if (count_ht > 1)
5248 return -EINVAL;
5249 }
5250 if (count_ht && rate)
5251 return -EINVAL;
5252 }
5253
5254 count_vht = 0;
5255 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5256 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5257 return -EINVAL;
5258 } else if (beacon_rate->control[band].vht_mcs[i]) {
5259 count_vht++;
5260 if (count_vht > 1)
5261 return -EINVAL;
5262 }
5263 if (count_vht && rate)
5264 return -EINVAL;
5265 }
5266
5267 count_he = 0;
5268 for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5269 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5270 return -EINVAL;
5271 } else if (beacon_rate->control[band].he_mcs[i]) {
5272 count_he++;
5273 if (count_he > 1)
5274 return -EINVAL;
5275 }
5276 if (count_he && rate)
5277 return -EINVAL;
5278 }
5279
5280 if ((count_ht && count_vht && count_he) ||
5281 (!rate && !count_ht && !count_vht && !count_he))
5282 return -EINVAL;
5283
5284 if (rate &&
5285 !wiphy_ext_feature_isset(&rdev->wiphy,
5286 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5287 return -EINVAL;
5288 if (count_ht &&
5289 !wiphy_ext_feature_isset(&rdev->wiphy,
5290 NL80211_EXT_FEATURE_BEACON_RATE_HT))
5291 return -EINVAL;
5292 if (count_vht &&
5293 !wiphy_ext_feature_isset(&rdev->wiphy,
5294 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5295 return -EINVAL;
5296 if (count_he &&
5297 !wiphy_ext_feature_isset(&rdev->wiphy,
5298 NL80211_EXT_FEATURE_BEACON_RATE_HE))
5299 return -EINVAL;
5300
5301 return 0;
5302 }
5303
nl80211_parse_mbssid_config(struct wiphy * wiphy,struct net_device * dev,struct nlattr * attrs,struct cfg80211_mbssid_config * config,u8 num_elems)5304 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5305 struct net_device *dev,
5306 struct nlattr *attrs,
5307 struct cfg80211_mbssid_config *config,
5308 u8 num_elems)
5309 {
5310 struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5311
5312 if (!wiphy->mbssid_max_interfaces)
5313 return -EOPNOTSUPP;
5314
5315 if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5316 NULL) ||
5317 !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5318 return -EINVAL;
5319
5320 config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5321 if (config->ema) {
5322 if (!wiphy->ema_max_profile_periodicity)
5323 return -EOPNOTSUPP;
5324
5325 if (num_elems > wiphy->ema_max_profile_periodicity)
5326 return -EINVAL;
5327 }
5328
5329 config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5330 if (config->index >= wiphy->mbssid_max_interfaces ||
5331 (!config->index && !num_elems))
5332 return -EINVAL;
5333
5334 if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5335 u32 tx_ifindex =
5336 nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5337
5338 if ((!config->index && tx_ifindex != dev->ifindex) ||
5339 (config->index && tx_ifindex == dev->ifindex))
5340 return -EINVAL;
5341
5342 if (tx_ifindex != dev->ifindex) {
5343 struct net_device *tx_netdev =
5344 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5345
5346 if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5347 tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5348 tx_netdev->ieee80211_ptr->iftype !=
5349 NL80211_IFTYPE_AP) {
5350 dev_put(tx_netdev);
5351 return -EINVAL;
5352 }
5353
5354 config->tx_wdev = tx_netdev->ieee80211_ptr;
5355 } else {
5356 config->tx_wdev = dev->ieee80211_ptr;
5357 }
5358 } else if (!config->index) {
5359 config->tx_wdev = dev->ieee80211_ptr;
5360 } else {
5361 return -EINVAL;
5362 }
5363
5364 return 0;
5365 }
5366
5367 static struct cfg80211_mbssid_elems *
nl80211_parse_mbssid_elems(struct wiphy * wiphy,struct nlattr * attrs)5368 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5369 {
5370 struct nlattr *nl_elems;
5371 struct cfg80211_mbssid_elems *elems;
5372 int rem_elems;
5373 u8 i = 0, num_elems = 0;
5374
5375 if (!wiphy->mbssid_max_interfaces)
5376 return ERR_PTR(-EINVAL);
5377
5378 nla_for_each_nested(nl_elems, attrs, rem_elems)
5379 num_elems++;
5380
5381 elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5382 if (!elems)
5383 return ERR_PTR(-ENOMEM);
5384
5385 nla_for_each_nested(nl_elems, attrs, rem_elems) {
5386 elems->elem[i].data = nla_data(nl_elems);
5387 elems->elem[i].len = nla_len(nl_elems);
5388 i++;
5389 }
5390 elems->cnt = num_elems;
5391 return elems;
5392 }
5393
nl80211_parse_he_bss_color(struct nlattr * attrs,struct cfg80211_he_bss_color * he_bss_color)5394 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5395 struct cfg80211_he_bss_color *he_bss_color)
5396 {
5397 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5398 int err;
5399
5400 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5401 he_bss_color_policy, NULL);
5402 if (err)
5403 return err;
5404
5405 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5406 return -EINVAL;
5407
5408 he_bss_color->color =
5409 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5410 he_bss_color->enabled =
5411 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5412 he_bss_color->partial =
5413 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5414
5415 return 0;
5416 }
5417
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn)5418 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5419 struct nlattr *attrs[],
5420 struct cfg80211_beacon_data *bcn)
5421 {
5422 bool haveinfo = false;
5423 int err;
5424
5425 memset(bcn, 0, sizeof(*bcn));
5426
5427 bcn->link_id = nl80211_link_id(attrs);
5428
5429 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5430 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5431 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5432 if (!bcn->head_len)
5433 return -EINVAL;
5434 haveinfo = true;
5435 }
5436
5437 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5438 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5439 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5440 haveinfo = true;
5441 }
5442
5443 if (!haveinfo)
5444 return -EINVAL;
5445
5446 if (attrs[NL80211_ATTR_IE]) {
5447 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5448 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5449 }
5450
5451 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5452 bcn->proberesp_ies =
5453 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5454 bcn->proberesp_ies_len =
5455 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5456 }
5457
5458 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5459 bcn->assocresp_ies =
5460 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5461 bcn->assocresp_ies_len =
5462 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5463 }
5464
5465 if (attrs[NL80211_ATTR_PROBE_RESP]) {
5466 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5467 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5468 }
5469
5470 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5471 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5472
5473 err = nla_parse_nested_deprecated(tb,
5474 NL80211_FTM_RESP_ATTR_MAX,
5475 attrs[NL80211_ATTR_FTM_RESPONDER],
5476 NULL, NULL);
5477 if (err)
5478 return err;
5479
5480 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5481 wiphy_ext_feature_isset(&rdev->wiphy,
5482 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5483 bcn->ftm_responder = 1;
5484 else
5485 return -EOPNOTSUPP;
5486
5487 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5488 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5489 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5490 }
5491
5492 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5493 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5494 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5495 }
5496 } else {
5497 bcn->ftm_responder = -1;
5498 }
5499
5500 if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5501 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5502 &bcn->he_bss_color);
5503 if (err)
5504 return err;
5505 bcn->he_bss_color_valid = true;
5506 }
5507
5508 if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5509 struct cfg80211_mbssid_elems *mbssid =
5510 nl80211_parse_mbssid_elems(&rdev->wiphy,
5511 attrs[NL80211_ATTR_MBSSID_ELEMS]);
5512
5513 if (IS_ERR(mbssid))
5514 return PTR_ERR(mbssid);
5515
5516 bcn->mbssid_ies = mbssid;
5517 }
5518
5519 return 0;
5520 }
5521
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)5522 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5523 struct ieee80211_he_obss_pd *he_obss_pd)
5524 {
5525 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5526 int err;
5527
5528 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5529 he_obss_pd_policy, NULL);
5530 if (err)
5531 return err;
5532
5533 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5534 return -EINVAL;
5535
5536 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5537
5538 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5539 he_obss_pd->min_offset =
5540 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5541 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5542 he_obss_pd->max_offset =
5543 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5544 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5545 he_obss_pd->non_srg_max_offset =
5546 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5547
5548 if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5549 return -EINVAL;
5550
5551 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5552 memcpy(he_obss_pd->bss_color_bitmap,
5553 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5554 sizeof(he_obss_pd->bss_color_bitmap));
5555
5556 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5557 memcpy(he_obss_pd->partial_bssid_bitmap,
5558 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5559 sizeof(he_obss_pd->partial_bssid_bitmap));
5560
5561 he_obss_pd->enable = true;
5562
5563 return 0;
5564 }
5565
nl80211_parse_fils_discovery(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)5566 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5567 struct nlattr *attrs,
5568 struct cfg80211_ap_settings *params)
5569 {
5570 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5571 int ret;
5572 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery;
5573
5574 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5575 NL80211_EXT_FEATURE_FILS_DISCOVERY))
5576 return -EINVAL;
5577
5578 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5579 NULL, NULL);
5580 if (ret)
5581 return ret;
5582
5583 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5584 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5585 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5586 return -EINVAL;
5587
5588 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5589 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5590 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5591 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5592
5593 return 0;
5594 }
5595
5596 static int
nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device * rdev,struct nlattr * attrs,struct cfg80211_ap_settings * params)5597 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5598 struct nlattr *attrs,
5599 struct cfg80211_ap_settings *params)
5600 {
5601 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5602 int ret;
5603 struct cfg80211_unsol_bcast_probe_resp *presp =
5604 ¶ms->unsol_bcast_probe_resp;
5605
5606 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5607 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5608 return -EINVAL;
5609
5610 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5611 attrs, NULL, NULL);
5612 if (ret)
5613 return ret;
5614
5615 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5616 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5617 return -EINVAL;
5618
5619 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5620 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5621 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5622 return 0;
5623 }
5624
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const struct element * rates)5625 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5626 const struct element *rates)
5627 {
5628 int i;
5629
5630 if (!rates)
5631 return;
5632
5633 for (i = 0; i < rates->datalen; i++) {
5634 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5635 params->ht_required = true;
5636 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5637 params->vht_required = true;
5638 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5639 params->he_required = true;
5640 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5641 params->sae_h2e_required = true;
5642 }
5643 }
5644
5645 /*
5646 * Since the nl80211 API didn't include, from the beginning, attributes about
5647 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5648 * benefit of drivers that rebuild IEs in the firmware.
5649 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)5650 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5651 {
5652 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
5653 size_t ies_len = bcn->tail_len;
5654 const u8 *ies = bcn->tail;
5655 const struct element *rates;
5656 const struct element *cap;
5657
5658 rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5659 nl80211_check_ap_rate_selectors(params, rates);
5660
5661 rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5662 nl80211_check_ap_rate_selectors(params, rates);
5663
5664 cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5665 if (cap && cap->datalen >= sizeof(*params->ht_cap))
5666 params->ht_cap = (void *)cap->data;
5667 cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5668 if (cap && cap->datalen >= sizeof(*params->vht_cap))
5669 params->vht_cap = (void *)cap->data;
5670 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5671 if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5672 params->he_cap = (void *)(cap->data + 1);
5673 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5674 if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5675 params->he_oper = (void *)(cap->data + 1);
5676 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5677 if (cap) {
5678 if (!cap->datalen)
5679 return -EINVAL;
5680 params->eht_cap = (void *)(cap->data + 1);
5681 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5682 (const u8 *)params->eht_cap,
5683 cap->datalen - 1, true))
5684 return -EINVAL;
5685 }
5686 cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5687 if (cap) {
5688 if (!cap->datalen)
5689 return -EINVAL;
5690 params->eht_oper = (void *)(cap->data + 1);
5691 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5692 cap->datalen - 1))
5693 return -EINVAL;
5694 }
5695 return 0;
5696 }
5697
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)5698 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5699 struct cfg80211_ap_settings *params)
5700 {
5701 struct wireless_dev *wdev;
5702
5703 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5704 if (wdev->iftype != NL80211_IFTYPE_AP &&
5705 wdev->iftype != NL80211_IFTYPE_P2P_GO)
5706 continue;
5707
5708 if (!wdev->u.ap.preset_chandef.chan)
5709 continue;
5710
5711 params->chandef = wdev->u.ap.preset_chandef;
5712 return true;
5713 }
5714
5715 return false;
5716 }
5717
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)5718 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5719 enum nl80211_auth_type auth_type,
5720 enum nl80211_commands cmd)
5721 {
5722 if (auth_type > NL80211_AUTHTYPE_MAX)
5723 return false;
5724
5725 switch (cmd) {
5726 case NL80211_CMD_AUTHENTICATE:
5727 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5728 auth_type == NL80211_AUTHTYPE_SAE)
5729 return false;
5730 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5731 NL80211_EXT_FEATURE_FILS_STA) &&
5732 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5733 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5734 auth_type == NL80211_AUTHTYPE_FILS_PK))
5735 return false;
5736 return true;
5737 case NL80211_CMD_CONNECT:
5738 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5739 !wiphy_ext_feature_isset(&rdev->wiphy,
5740 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5741 auth_type == NL80211_AUTHTYPE_SAE)
5742 return false;
5743
5744 /* FILS with SK PFS or PK not supported yet */
5745 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5746 auth_type == NL80211_AUTHTYPE_FILS_PK)
5747 return false;
5748 if (!wiphy_ext_feature_isset(
5749 &rdev->wiphy,
5750 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5751 auth_type == NL80211_AUTHTYPE_FILS_SK)
5752 return false;
5753 return true;
5754 case NL80211_CMD_START_AP:
5755 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5756 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5757 auth_type == NL80211_AUTHTYPE_SAE)
5758 return false;
5759 /* FILS not supported yet */
5760 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5761 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5762 auth_type == NL80211_AUTHTYPE_FILS_PK)
5763 return false;
5764 return true;
5765 default:
5766 return false;
5767 }
5768 }
5769
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)5770 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5771 {
5772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5773 unsigned int link_id = nl80211_link_id(info->attrs);
5774 struct net_device *dev = info->user_ptr[1];
5775 struct wireless_dev *wdev = dev->ieee80211_ptr;
5776 struct cfg80211_ap_settings *params;
5777 int err;
5778
5779 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5780 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5781 return -EOPNOTSUPP;
5782
5783 if (!rdev->ops->start_ap)
5784 return -EOPNOTSUPP;
5785
5786 if (wdev->links[link_id].ap.beacon_interval)
5787 return -EALREADY;
5788
5789 /* these are required for START_AP */
5790 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5791 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5792 !info->attrs[NL80211_ATTR_BEACON_HEAD])
5793 return -EINVAL;
5794
5795 params = kzalloc(sizeof(*params), GFP_KERNEL);
5796 if (!params)
5797 return -ENOMEM;
5798
5799 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms->beacon);
5800 if (err)
5801 goto out;
5802
5803 params->beacon_interval =
5804 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5805 params->dtim_period =
5806 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5807
5808 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5809 params->beacon_interval);
5810 if (err)
5811 goto out;
5812
5813 /*
5814 * In theory, some of these attributes should be required here
5815 * but since they were not used when the command was originally
5816 * added, keep them optional for old user space programs to let
5817 * them continue to work with drivers that do not need the
5818 * additional information -- drivers must check!
5819 */
5820 if (info->attrs[NL80211_ATTR_SSID]) {
5821 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5822 params->ssid_len =
5823 nla_len(info->attrs[NL80211_ATTR_SSID]);
5824 if (params->ssid_len == 0) {
5825 err = -EINVAL;
5826 goto out;
5827 }
5828
5829 if (wdev->u.ap.ssid_len &&
5830 (wdev->u.ap.ssid_len != params->ssid_len ||
5831 memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5832 /* require identical SSID for MLO */
5833 err = -EINVAL;
5834 goto out;
5835 }
5836 } else if (wdev->valid_links) {
5837 /* require SSID for MLO */
5838 err = -EINVAL;
5839 goto out;
5840 }
5841
5842 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5843 params->hidden_ssid = nla_get_u32(
5844 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5845
5846 params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5847
5848 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5849 params->auth_type = nla_get_u32(
5850 info->attrs[NL80211_ATTR_AUTH_TYPE]);
5851 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5852 NL80211_CMD_START_AP)) {
5853 err = -EINVAL;
5854 goto out;
5855 }
5856 } else
5857 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5858
5859 err = nl80211_crypto_settings(rdev, info, ¶ms->crypto,
5860 NL80211_MAX_NR_CIPHER_SUITES);
5861 if (err)
5862 goto out;
5863
5864 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5865 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5866 err = -EOPNOTSUPP;
5867 goto out;
5868 }
5869 params->inactivity_timeout = nla_get_u16(
5870 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5871 }
5872
5873 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5874 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5875 err = -EINVAL;
5876 goto out;
5877 }
5878 params->p2p_ctwindow =
5879 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5880 if (params->p2p_ctwindow != 0 &&
5881 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5882 err = -EINVAL;
5883 goto out;
5884 }
5885 }
5886
5887 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5888 u8 tmp;
5889
5890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5891 err = -EINVAL;
5892 goto out;
5893 }
5894 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5895 params->p2p_opp_ps = tmp;
5896 if (params->p2p_opp_ps != 0 &&
5897 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5898 err = -EINVAL;
5899 goto out;
5900 }
5901 }
5902
5903 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5904 err = nl80211_parse_chandef(rdev, info, ¶ms->chandef);
5905 if (err)
5906 goto out;
5907 } else if (wdev->valid_links) {
5908 /* with MLD need to specify the channel configuration */
5909 err = -EINVAL;
5910 goto out;
5911 } else if (wdev->u.ap.preset_chandef.chan) {
5912 params->chandef = wdev->u.ap.preset_chandef;
5913 } else if (!nl80211_get_ap_channel(rdev, params)) {
5914 err = -EINVAL;
5915 goto out;
5916 }
5917
5918 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms->chandef,
5919 wdev->iftype)) {
5920 err = -EINVAL;
5921 goto out;
5922 }
5923
5924 wdev_lock(wdev);
5925
5926 if (info->attrs[NL80211_ATTR_TX_RATES]) {
5927 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5928 NL80211_ATTR_TX_RATES,
5929 ¶ms->beacon_rate,
5930 dev, false, link_id);
5931 if (err)
5932 goto out_unlock;
5933
5934 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
5935 ¶ms->beacon_rate);
5936 if (err)
5937 goto out_unlock;
5938 }
5939
5940 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5941 params->smps_mode =
5942 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5943 switch (params->smps_mode) {
5944 case NL80211_SMPS_OFF:
5945 break;
5946 case NL80211_SMPS_STATIC:
5947 if (!(rdev->wiphy.features &
5948 NL80211_FEATURE_STATIC_SMPS)) {
5949 err = -EINVAL;
5950 goto out_unlock;
5951 }
5952 break;
5953 case NL80211_SMPS_DYNAMIC:
5954 if (!(rdev->wiphy.features &
5955 NL80211_FEATURE_DYNAMIC_SMPS)) {
5956 err = -EINVAL;
5957 goto out_unlock;
5958 }
5959 break;
5960 default:
5961 err = -EINVAL;
5962 goto out_unlock;
5963 }
5964 } else {
5965 params->smps_mode = NL80211_SMPS_OFF;
5966 }
5967
5968 params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5969 if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
5970 err = -EOPNOTSUPP;
5971 goto out_unlock;
5972 }
5973
5974 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5975 params->acl = parse_acl_data(&rdev->wiphy, info);
5976 if (IS_ERR(params->acl)) {
5977 err = PTR_ERR(params->acl);
5978 params->acl = NULL;
5979 goto out_unlock;
5980 }
5981 }
5982
5983 params->twt_responder =
5984 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5985
5986 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5987 err = nl80211_parse_he_obss_pd(
5988 info->attrs[NL80211_ATTR_HE_OBSS_PD],
5989 ¶ms->he_obss_pd);
5990 if (err)
5991 goto out_unlock;
5992 }
5993
5994 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5995 err = nl80211_parse_fils_discovery(rdev,
5996 info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5997 params);
5998 if (err)
5999 goto out_unlock;
6000 }
6001
6002 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6003 err = nl80211_parse_unsol_bcast_probe_resp(
6004 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6005 params);
6006 if (err)
6007 goto out_unlock;
6008 }
6009
6010 if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6011 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6012 info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6013 ¶ms->mbssid_config,
6014 params->beacon.mbssid_ies ?
6015 params->beacon.mbssid_ies->cnt :
6016 0);
6017 if (err)
6018 goto out_unlock;
6019 }
6020
6021 err = nl80211_calculate_ap_params(params);
6022 if (err)
6023 goto out_unlock;
6024
6025 if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6026 params->flags = nla_get_u32(
6027 info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6028 else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6029 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6030
6031 if (wdev->conn_owner_nlportid &&
6032 info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6033 wdev->conn_owner_nlportid != info->snd_portid) {
6034 err = -EINVAL;
6035 goto out_unlock;
6036 }
6037
6038 /* FIXME: validate MLO/link-id against driver capabilities */
6039
6040 err = rdev_start_ap(rdev, dev, params);
6041 if (!err) {
6042 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6043 wdev->links[link_id].ap.chandef = params->chandef;
6044 wdev->u.ap.ssid_len = params->ssid_len;
6045 memcpy(wdev->u.ap.ssid, params->ssid,
6046 params->ssid_len);
6047
6048 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6049 wdev->conn_owner_nlportid = info->snd_portid;
6050 }
6051 out_unlock:
6052 wdev_unlock(wdev);
6053 out:
6054 kfree(params->acl);
6055 kfree(params->beacon.mbssid_ies);
6056 if (params->mbssid_config.tx_wdev &&
6057 params->mbssid_config.tx_wdev->netdev &&
6058 params->mbssid_config.tx_wdev->netdev != dev)
6059 dev_put(params->mbssid_config.tx_wdev->netdev);
6060 kfree(params);
6061
6062 return err;
6063 }
6064
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)6065 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6066 {
6067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068 unsigned int link_id = nl80211_link_id(info->attrs);
6069 struct net_device *dev = info->user_ptr[1];
6070 struct wireless_dev *wdev = dev->ieee80211_ptr;
6071 struct cfg80211_beacon_data params;
6072 int err;
6073
6074 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6075 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6076 return -EOPNOTSUPP;
6077
6078 if (!rdev->ops->change_beacon)
6079 return -EOPNOTSUPP;
6080
6081 if (!wdev->links[link_id].ap.beacon_interval)
6082 return -EINVAL;
6083
6084 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
6085 if (err)
6086 goto out;
6087
6088 wdev_lock(wdev);
6089 err = rdev_change_beacon(rdev, dev, ¶ms);
6090 wdev_unlock(wdev);
6091
6092 out:
6093 kfree(params.mbssid_ies);
6094 return err;
6095 }
6096
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)6097 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6098 {
6099 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6100 unsigned int link_id = nl80211_link_id(info->attrs);
6101 struct net_device *dev = info->user_ptr[1];
6102
6103 return cfg80211_stop_ap(rdev, dev, link_id, false);
6104 }
6105
6106 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6107 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6108 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6109 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6110 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6111 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6112 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6113 };
6114
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)6115 static int parse_station_flags(struct genl_info *info,
6116 enum nl80211_iftype iftype,
6117 struct station_parameters *params)
6118 {
6119 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6120 struct nlattr *nla;
6121 int flag;
6122
6123 /*
6124 * Try parsing the new attribute first so userspace
6125 * can specify both for older kernels.
6126 */
6127 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6128 if (nla) {
6129 struct nl80211_sta_flag_update *sta_flags;
6130
6131 sta_flags = nla_data(nla);
6132 params->sta_flags_mask = sta_flags->mask;
6133 params->sta_flags_set = sta_flags->set;
6134 params->sta_flags_set &= params->sta_flags_mask;
6135 if ((params->sta_flags_mask |
6136 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6137 return -EINVAL;
6138 return 0;
6139 }
6140
6141 /* if present, parse the old attribute */
6142
6143 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6144 if (!nla)
6145 return 0;
6146
6147 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6148 return -EINVAL;
6149
6150 /*
6151 * Only allow certain flags for interface types so that
6152 * other attributes are silently ignored. Remember that
6153 * this is backward compatibility code with old userspace
6154 * and shouldn't be hit in other cases anyway.
6155 */
6156 switch (iftype) {
6157 case NL80211_IFTYPE_AP:
6158 case NL80211_IFTYPE_AP_VLAN:
6159 case NL80211_IFTYPE_P2P_GO:
6160 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6161 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6162 BIT(NL80211_STA_FLAG_WME) |
6163 BIT(NL80211_STA_FLAG_MFP);
6164 break;
6165 case NL80211_IFTYPE_P2P_CLIENT:
6166 case NL80211_IFTYPE_STATION:
6167 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6168 BIT(NL80211_STA_FLAG_TDLS_PEER);
6169 break;
6170 case NL80211_IFTYPE_MESH_POINT:
6171 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6172 BIT(NL80211_STA_FLAG_MFP) |
6173 BIT(NL80211_STA_FLAG_AUTHORIZED);
6174 break;
6175 default:
6176 return -EINVAL;
6177 }
6178
6179 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6180 if (flags[flag]) {
6181 params->sta_flags_set |= (1<<flag);
6182
6183 /* no longer support new API additions in old API */
6184 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6185 return -EINVAL;
6186 }
6187 }
6188
6189 return 0;
6190 }
6191
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)6192 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6193 {
6194 struct nlattr *rate;
6195 u32 bitrate;
6196 u16 bitrate_compat;
6197 enum nl80211_rate_info rate_flg;
6198
6199 rate = nla_nest_start_noflag(msg, attr);
6200 if (!rate)
6201 return false;
6202
6203 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6204 bitrate = cfg80211_calculate_bitrate(info);
6205 /* report 16-bit bitrate only if we can */
6206 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6207 if (bitrate > 0 &&
6208 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6209 return false;
6210 if (bitrate_compat > 0 &&
6211 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6212 return false;
6213
6214 switch (info->bw) {
6215 case RATE_INFO_BW_5:
6216 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6217 break;
6218 case RATE_INFO_BW_10:
6219 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6220 break;
6221 default:
6222 WARN_ON(1);
6223 fallthrough;
6224 case RATE_INFO_BW_20:
6225 rate_flg = 0;
6226 break;
6227 case RATE_INFO_BW_40:
6228 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6229 break;
6230 case RATE_INFO_BW_80:
6231 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6232 break;
6233 case RATE_INFO_BW_160:
6234 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6235 break;
6236 case RATE_INFO_BW_HE_RU:
6237 rate_flg = 0;
6238 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6239 break;
6240 case RATE_INFO_BW_320:
6241 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6242 break;
6243 case RATE_INFO_BW_EHT_RU:
6244 rate_flg = 0;
6245 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6246 break;
6247 }
6248
6249 if (rate_flg && nla_put_flag(msg, rate_flg))
6250 return false;
6251
6252 if (info->flags & RATE_INFO_FLAGS_MCS) {
6253 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6254 return false;
6255 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6256 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6257 return false;
6258 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6259 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6260 return false;
6261 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6262 return false;
6263 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6264 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6265 return false;
6266 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6267 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6268 return false;
6269 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6270 return false;
6271 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6272 return false;
6273 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6274 return false;
6275 if (info->bw == RATE_INFO_BW_HE_RU &&
6276 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6277 info->he_ru_alloc))
6278 return false;
6279 } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6280 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6281 return false;
6282 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6283 return false;
6284 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6285 return false;
6286 if (info->bw == RATE_INFO_BW_EHT_RU &&
6287 nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6288 info->eht_ru_alloc))
6289 return false;
6290 }
6291
6292 nla_nest_end(msg, rate);
6293 return true;
6294 }
6295
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)6296 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6297 int id)
6298 {
6299 void *attr;
6300 int i = 0;
6301
6302 if (!mask)
6303 return true;
6304
6305 attr = nla_nest_start_noflag(msg, id);
6306 if (!attr)
6307 return false;
6308
6309 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6310 if (!(mask & BIT(i)))
6311 continue;
6312
6313 if (nla_put_u8(msg, i, signal[i]))
6314 return false;
6315 }
6316
6317 nla_nest_end(msg, attr);
6318
6319 return true;
6320 }
6321
nl80211_send_station(struct sk_buff * msg,u32 cmd,u32 portid,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo)6322 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6323 u32 seq, int flags,
6324 struct cfg80211_registered_device *rdev,
6325 struct net_device *dev,
6326 const u8 *mac_addr, struct station_info *sinfo)
6327 {
6328 void *hdr;
6329 struct nlattr *sinfoattr, *bss_param;
6330
6331 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6332 if (!hdr) {
6333 cfg80211_sinfo_release_content(sinfo);
6334 return -1;
6335 }
6336
6337 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6338 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6339 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6340 goto nla_put_failure;
6341
6342 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6343 if (!sinfoattr)
6344 goto nla_put_failure;
6345
6346 #define PUT_SINFO(attr, memb, type) do { \
6347 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
6348 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
6349 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
6350 sinfo->memb)) \
6351 goto nla_put_failure; \
6352 } while (0)
6353 #define PUT_SINFO_U64(attr, memb) do { \
6354 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
6355 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
6356 sinfo->memb, NL80211_STA_INFO_PAD)) \
6357 goto nla_put_failure; \
6358 } while (0)
6359
6360 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6361 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6362 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6363
6364 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6365 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6366 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6367 (u32)sinfo->rx_bytes))
6368 goto nla_put_failure;
6369
6370 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6371 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6372 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6373 (u32)sinfo->tx_bytes))
6374 goto nla_put_failure;
6375
6376 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6377 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6378 PUT_SINFO(LLID, llid, u16);
6379 PUT_SINFO(PLID, plid, u16);
6380 PUT_SINFO(PLINK_STATE, plink_state, u8);
6381 PUT_SINFO_U64(RX_DURATION, rx_duration);
6382 PUT_SINFO_U64(TX_DURATION, tx_duration);
6383
6384 if (wiphy_ext_feature_isset(&rdev->wiphy,
6385 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6386 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6387
6388 switch (rdev->wiphy.signal_type) {
6389 case CFG80211_SIGNAL_TYPE_MBM:
6390 PUT_SINFO(SIGNAL, signal, u8);
6391 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6392 break;
6393 default:
6394 break;
6395 }
6396 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6397 if (!nl80211_put_signal(msg, sinfo->chains,
6398 sinfo->chain_signal,
6399 NL80211_STA_INFO_CHAIN_SIGNAL))
6400 goto nla_put_failure;
6401 }
6402 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6403 if (!nl80211_put_signal(msg, sinfo->chains,
6404 sinfo->chain_signal_avg,
6405 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6406 goto nla_put_failure;
6407 }
6408 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6409 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6410 NL80211_STA_INFO_TX_BITRATE))
6411 goto nla_put_failure;
6412 }
6413 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6414 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6415 NL80211_STA_INFO_RX_BITRATE))
6416 goto nla_put_failure;
6417 }
6418
6419 PUT_SINFO(RX_PACKETS, rx_packets, u32);
6420 PUT_SINFO(TX_PACKETS, tx_packets, u32);
6421 PUT_SINFO(TX_RETRIES, tx_retries, u32);
6422 PUT_SINFO(TX_FAILED, tx_failed, u32);
6423 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6424 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6425 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6426 PUT_SINFO(LOCAL_PM, local_pm, u32);
6427 PUT_SINFO(PEER_PM, peer_pm, u32);
6428 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6429 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6430 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6431
6432 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6433 bss_param = nla_nest_start_noflag(msg,
6434 NL80211_STA_INFO_BSS_PARAM);
6435 if (!bss_param)
6436 goto nla_put_failure;
6437
6438 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6439 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6440 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6441 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6442 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6443 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6444 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6445 sinfo->bss_param.dtim_period) ||
6446 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6447 sinfo->bss_param.beacon_interval))
6448 goto nla_put_failure;
6449
6450 nla_nest_end(msg, bss_param);
6451 }
6452 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6453 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6454 sizeof(struct nl80211_sta_flag_update),
6455 &sinfo->sta_flags))
6456 goto nla_put_failure;
6457
6458 PUT_SINFO_U64(T_OFFSET, t_offset);
6459 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6460 PUT_SINFO_U64(BEACON_RX, rx_beacon);
6461 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6462 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6463 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6464 if (wiphy_ext_feature_isset(&rdev->wiphy,
6465 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6466 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6467 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6468 }
6469
6470 #undef PUT_SINFO
6471 #undef PUT_SINFO_U64
6472
6473 if (sinfo->pertid) {
6474 struct nlattr *tidsattr;
6475 int tid;
6476
6477 tidsattr = nla_nest_start_noflag(msg,
6478 NL80211_STA_INFO_TID_STATS);
6479 if (!tidsattr)
6480 goto nla_put_failure;
6481
6482 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6483 struct cfg80211_tid_stats *tidstats;
6484 struct nlattr *tidattr;
6485
6486 tidstats = &sinfo->pertid[tid];
6487
6488 if (!tidstats->filled)
6489 continue;
6490
6491 tidattr = nla_nest_start_noflag(msg, tid + 1);
6492 if (!tidattr)
6493 goto nla_put_failure;
6494
6495 #define PUT_TIDVAL_U64(attr, memb) do { \
6496 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
6497 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
6498 tidstats->memb, NL80211_TID_STATS_PAD)) \
6499 goto nla_put_failure; \
6500 } while (0)
6501
6502 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6503 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6504 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6505 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6506
6507 #undef PUT_TIDVAL_U64
6508 if ((tidstats->filled &
6509 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6510 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6511 NL80211_TID_STATS_TXQ_STATS))
6512 goto nla_put_failure;
6513
6514 nla_nest_end(msg, tidattr);
6515 }
6516
6517 nla_nest_end(msg, tidsattr);
6518 }
6519
6520 nla_nest_end(msg, sinfoattr);
6521
6522 if (sinfo->assoc_req_ies_len &&
6523 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6524 sinfo->assoc_req_ies))
6525 goto nla_put_failure;
6526
6527 cfg80211_sinfo_release_content(sinfo);
6528 genlmsg_end(msg, hdr);
6529 return 0;
6530
6531 nla_put_failure:
6532 cfg80211_sinfo_release_content(sinfo);
6533 genlmsg_cancel(msg, hdr);
6534 return -EMSGSIZE;
6535 }
6536
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)6537 static int nl80211_dump_station(struct sk_buff *skb,
6538 struct netlink_callback *cb)
6539 {
6540 struct station_info sinfo;
6541 struct cfg80211_registered_device *rdev;
6542 struct wireless_dev *wdev;
6543 u8 mac_addr[ETH_ALEN];
6544 int sta_idx = cb->args[2];
6545 int err;
6546
6547 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6548 if (err)
6549 return err;
6550 /* nl80211_prepare_wdev_dump acquired it in the successful case */
6551 __acquire(&rdev->wiphy.mtx);
6552
6553 if (!wdev->netdev) {
6554 err = -EINVAL;
6555 goto out_err;
6556 }
6557
6558 if (!rdev->ops->dump_station) {
6559 err = -EOPNOTSUPP;
6560 goto out_err;
6561 }
6562
6563 while (1) {
6564 memset(&sinfo, 0, sizeof(sinfo));
6565 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6566 mac_addr, &sinfo);
6567 if (err == -ENOENT)
6568 break;
6569 if (err)
6570 goto out_err;
6571
6572 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6573 NETLINK_CB(cb->skb).portid,
6574 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6575 rdev, wdev->netdev, mac_addr,
6576 &sinfo) < 0)
6577 goto out;
6578
6579 sta_idx++;
6580 }
6581
6582 out:
6583 cb->args[2] = sta_idx;
6584 err = skb->len;
6585 out_err:
6586 wiphy_unlock(&rdev->wiphy);
6587
6588 return err;
6589 }
6590
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)6591 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6592 {
6593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6594 struct net_device *dev = info->user_ptr[1];
6595 struct station_info sinfo;
6596 struct sk_buff *msg;
6597 u8 *mac_addr = NULL;
6598 int err;
6599
6600 memset(&sinfo, 0, sizeof(sinfo));
6601
6602 if (!info->attrs[NL80211_ATTR_MAC])
6603 return -EINVAL;
6604
6605 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6606
6607 if (!rdev->ops->get_station)
6608 return -EOPNOTSUPP;
6609
6610 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6611 if (err)
6612 return err;
6613
6614 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6615 if (!msg) {
6616 cfg80211_sinfo_release_content(&sinfo);
6617 return -ENOMEM;
6618 }
6619
6620 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6621 info->snd_portid, info->snd_seq, 0,
6622 rdev, dev, mac_addr, &sinfo) < 0) {
6623 nlmsg_free(msg);
6624 return -ENOBUFS;
6625 }
6626
6627 return genlmsg_reply(msg, info);
6628 }
6629
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)6630 int cfg80211_check_station_change(struct wiphy *wiphy,
6631 struct station_parameters *params,
6632 enum cfg80211_station_type statype)
6633 {
6634 if (params->listen_interval != -1 &&
6635 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6636 return -EINVAL;
6637
6638 if (params->support_p2p_ps != -1 &&
6639 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6640 return -EINVAL;
6641
6642 if (params->aid &&
6643 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6644 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6645 return -EINVAL;
6646
6647 /* When you run into this, adjust the code below for the new flag */
6648 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6649
6650 switch (statype) {
6651 case CFG80211_STA_MESH_PEER_KERNEL:
6652 case CFG80211_STA_MESH_PEER_USER:
6653 /*
6654 * No ignoring the TDLS flag here -- the userspace mesh
6655 * code doesn't have the bug of including TDLS in the
6656 * mask everywhere.
6657 */
6658 if (params->sta_flags_mask &
6659 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6660 BIT(NL80211_STA_FLAG_MFP) |
6661 BIT(NL80211_STA_FLAG_AUTHORIZED)))
6662 return -EINVAL;
6663 break;
6664 case CFG80211_STA_TDLS_PEER_SETUP:
6665 case CFG80211_STA_TDLS_PEER_ACTIVE:
6666 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6667 return -EINVAL;
6668 /* ignore since it can't change */
6669 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6670 break;
6671 default:
6672 /* disallow mesh-specific things */
6673 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6674 return -EINVAL;
6675 if (params->local_pm)
6676 return -EINVAL;
6677 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6678 return -EINVAL;
6679 }
6680
6681 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6682 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6683 /* TDLS can't be set, ... */
6684 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6685 return -EINVAL;
6686 /*
6687 * ... but don't bother the driver with it. This works around
6688 * a hostapd/wpa_supplicant issue -- it always includes the
6689 * TLDS_PEER flag in the mask even for AP mode.
6690 */
6691 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6692 }
6693
6694 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6695 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6696 /* reject other things that can't change */
6697 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6698 return -EINVAL;
6699 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6700 return -EINVAL;
6701 if (params->link_sta_params.supported_rates)
6702 return -EINVAL;
6703 if (params->ext_capab || params->link_sta_params.ht_capa ||
6704 params->link_sta_params.vht_capa ||
6705 params->link_sta_params.he_capa ||
6706 params->link_sta_params.eht_capa)
6707 return -EINVAL;
6708 }
6709
6710 if (statype != CFG80211_STA_AP_CLIENT &&
6711 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6712 if (params->vlan)
6713 return -EINVAL;
6714 }
6715
6716 switch (statype) {
6717 case CFG80211_STA_AP_MLME_CLIENT:
6718 /* Use this only for authorizing/unauthorizing a station */
6719 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6720 return -EOPNOTSUPP;
6721 break;
6722 case CFG80211_STA_AP_CLIENT:
6723 case CFG80211_STA_AP_CLIENT_UNASSOC:
6724 /* accept only the listed bits */
6725 if (params->sta_flags_mask &
6726 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6727 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6728 BIT(NL80211_STA_FLAG_ASSOCIATED) |
6729 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6730 BIT(NL80211_STA_FLAG_WME) |
6731 BIT(NL80211_STA_FLAG_MFP)))
6732 return -EINVAL;
6733
6734 /* but authenticated/associated only if driver handles it */
6735 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6736 params->sta_flags_mask &
6737 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6738 BIT(NL80211_STA_FLAG_ASSOCIATED)))
6739 return -EINVAL;
6740 break;
6741 case CFG80211_STA_IBSS:
6742 case CFG80211_STA_AP_STA:
6743 /* reject any changes other than AUTHORIZED */
6744 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6745 return -EINVAL;
6746 break;
6747 case CFG80211_STA_TDLS_PEER_SETUP:
6748 /* reject any changes other than AUTHORIZED or WME */
6749 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6750 BIT(NL80211_STA_FLAG_WME)))
6751 return -EINVAL;
6752 /* force (at least) rates when authorizing */
6753 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6754 !params->link_sta_params.supported_rates)
6755 return -EINVAL;
6756 break;
6757 case CFG80211_STA_TDLS_PEER_ACTIVE:
6758 /* reject any changes */
6759 return -EINVAL;
6760 case CFG80211_STA_MESH_PEER_KERNEL:
6761 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6762 return -EINVAL;
6763 break;
6764 case CFG80211_STA_MESH_PEER_USER:
6765 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6766 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6767 return -EINVAL;
6768 break;
6769 }
6770
6771 /*
6772 * Older kernel versions ignored this attribute entirely, so don't
6773 * reject attempts to update it but mark it as unused instead so the
6774 * driver won't look at the data.
6775 */
6776 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6777 statype != CFG80211_STA_TDLS_PEER_SETUP)
6778 params->link_sta_params.opmode_notif_used = false;
6779
6780 return 0;
6781 }
6782 EXPORT_SYMBOL(cfg80211_check_station_change);
6783
6784 /*
6785 * Get vlan interface making sure it is running and on the right wiphy.
6786 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)6787 static struct net_device *get_vlan(struct genl_info *info,
6788 struct cfg80211_registered_device *rdev)
6789 {
6790 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6791 struct net_device *v;
6792 int ret;
6793
6794 if (!vlanattr)
6795 return NULL;
6796
6797 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6798 if (!v)
6799 return ERR_PTR(-ENODEV);
6800
6801 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6802 ret = -EINVAL;
6803 goto error;
6804 }
6805
6806 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6807 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6808 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6809 ret = -EINVAL;
6810 goto error;
6811 }
6812
6813 if (!netif_running(v)) {
6814 ret = -ENETDOWN;
6815 goto error;
6816 }
6817
6818 return v;
6819 error:
6820 dev_put(v);
6821 return ERR_PTR(ret);
6822 }
6823
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)6824 static int nl80211_parse_sta_wme(struct genl_info *info,
6825 struct station_parameters *params)
6826 {
6827 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6828 struct nlattr *nla;
6829 int err;
6830
6831 /* parse WME attributes if present */
6832 if (!info->attrs[NL80211_ATTR_STA_WME])
6833 return 0;
6834
6835 nla = info->attrs[NL80211_ATTR_STA_WME];
6836 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6837 nl80211_sta_wme_policy,
6838 info->extack);
6839 if (err)
6840 return err;
6841
6842 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6843 params->uapsd_queues = nla_get_u8(
6844 tb[NL80211_STA_WME_UAPSD_QUEUES]);
6845 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6846 return -EINVAL;
6847
6848 if (tb[NL80211_STA_WME_MAX_SP])
6849 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6850
6851 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6852 return -EINVAL;
6853
6854 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6855
6856 return 0;
6857 }
6858
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)6859 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6860 struct station_parameters *params)
6861 {
6862 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6863 params->supported_channels =
6864 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6865 params->supported_channels_len =
6866 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6867 /*
6868 * Need to include at least one (first channel, number of
6869 * channels) tuple for each subband (checked in policy),
6870 * and must have proper tuples for the rest of the data as well.
6871 */
6872 if (params->supported_channels_len % 2)
6873 return -EINVAL;
6874 }
6875
6876 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6877 params->supported_oper_classes =
6878 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6879 params->supported_oper_classes_len =
6880 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6881 }
6882 return 0;
6883 }
6884
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)6885 static int nl80211_set_station_tdls(struct genl_info *info,
6886 struct station_parameters *params)
6887 {
6888 int err;
6889 /* Dummy STA entry gets updated once the peer capabilities are known */
6890 if (info->attrs[NL80211_ATTR_PEER_AID])
6891 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6892 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6893 params->link_sta_params.ht_capa =
6894 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6895 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6896 params->link_sta_params.vht_capa =
6897 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6898 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6899 params->link_sta_params.he_capa =
6900 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6901 params->link_sta_params.he_capa_len =
6902 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6903
6904 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6905 params->link_sta_params.eht_capa =
6906 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6907 params->link_sta_params.eht_capa_len =
6908 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6909
6910 if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6911 (const u8 *)params->link_sta_params.eht_capa,
6912 params->link_sta_params.eht_capa_len,
6913 false))
6914 return -EINVAL;
6915 }
6916 }
6917
6918 err = nl80211_parse_sta_channel_info(info, params);
6919 if (err)
6920 return err;
6921
6922 return nl80211_parse_sta_wme(info, params);
6923 }
6924
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct sta_txpwr * txpwr,bool * txpwr_set)6925 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6926 struct sta_txpwr *txpwr,
6927 bool *txpwr_set)
6928 {
6929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6930 int idx;
6931
6932 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6933 if (!rdev->ops->set_tx_power ||
6934 !wiphy_ext_feature_isset(&rdev->wiphy,
6935 NL80211_EXT_FEATURE_STA_TX_PWR))
6936 return -EOPNOTSUPP;
6937
6938 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6939 txpwr->type = nla_get_u8(info->attrs[idx]);
6940
6941 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
6942 idx = NL80211_ATTR_STA_TX_POWER;
6943
6944 if (info->attrs[idx])
6945 txpwr->power = nla_get_s16(info->attrs[idx]);
6946 else
6947 return -EINVAL;
6948 }
6949
6950 *txpwr_set = true;
6951 } else {
6952 *txpwr_set = false;
6953 }
6954
6955 return 0;
6956 }
6957
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)6958 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6959 {
6960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6961 struct net_device *dev = info->user_ptr[1];
6962 struct station_parameters params;
6963 u8 *mac_addr;
6964 int err;
6965
6966 memset(¶ms, 0, sizeof(params));
6967
6968 if (!rdev->ops->change_station)
6969 return -EOPNOTSUPP;
6970
6971 /*
6972 * AID and listen_interval properties can be set only for unassociated
6973 * station. Include these parameters here and will check them in
6974 * cfg80211_check_station_change().
6975 */
6976 if (info->attrs[NL80211_ATTR_STA_AID])
6977 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6978
6979 if (info->attrs[NL80211_ATTR_VLAN_ID])
6980 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6981
6982 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6983 params.listen_interval =
6984 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6985 else
6986 params.listen_interval = -1;
6987
6988 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6989 params.support_p2p_ps =
6990 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6991 else
6992 params.support_p2p_ps = -1;
6993
6994 if (!info->attrs[NL80211_ATTR_MAC])
6995 return -EINVAL;
6996
6997 params.link_sta_params.link_id =
6998 nl80211_link_id_or_invalid(info->attrs);
6999
7000 if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7001 /* If MLD_ADDR attribute is set then this is an MLD station
7002 * and the MLD_ADDR attribute holds the MLD address and the
7003 * MAC attribute holds for the LINK address.
7004 * In that case, the link_id is also expected to be valid.
7005 */
7006 if (params.link_sta_params.link_id < 0)
7007 return -EINVAL;
7008
7009 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7010 params.link_sta_params.mld_mac = mac_addr;
7011 params.link_sta_params.link_mac =
7012 nla_data(info->attrs[NL80211_ATTR_MAC]);
7013 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7014 return -EINVAL;
7015 } else {
7016 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7017 }
7018
7019
7020 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7021 params.link_sta_params.supported_rates =
7022 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7023 params.link_sta_params.supported_rates_len =
7024 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7025 }
7026
7027 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7028 params.capability =
7029 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7030 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7031 }
7032
7033 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7034 params.ext_capab =
7035 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7036 params.ext_capab_len =
7037 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7038 }
7039
7040 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
7041 return -EINVAL;
7042
7043 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7044 params.plink_action =
7045 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7046
7047 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7048 params.plink_state =
7049 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7050 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7051 params.peer_aid = nla_get_u16(
7052 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7053 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7054 }
7055
7056 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7057 params.local_pm = nla_get_u32(
7058 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7059
7060 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7061 params.link_sta_params.opmode_notif_used = true;
7062 params.link_sta_params.opmode_notif =
7063 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7064 }
7065
7066 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7067 params.link_sta_params.he_6ghz_capa =
7068 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7069
7070 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7071 params.airtime_weight =
7072 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7073
7074 if (params.airtime_weight &&
7075 !wiphy_ext_feature_isset(&rdev->wiphy,
7076 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7077 return -EOPNOTSUPP;
7078
7079 err = nl80211_parse_sta_txpower_setting(info,
7080 ¶ms.link_sta_params.txpwr,
7081 ¶ms.link_sta_params.txpwr_set);
7082 if (err)
7083 return err;
7084
7085 /* Include parameters for TDLS peer (will check later) */
7086 err = nl80211_set_station_tdls(info, ¶ms);
7087 if (err)
7088 return err;
7089
7090 params.vlan = get_vlan(info, rdev);
7091 if (IS_ERR(params.vlan))
7092 return PTR_ERR(params.vlan);
7093
7094 switch (dev->ieee80211_ptr->iftype) {
7095 case NL80211_IFTYPE_AP:
7096 case NL80211_IFTYPE_AP_VLAN:
7097 case NL80211_IFTYPE_P2P_GO:
7098 case NL80211_IFTYPE_P2P_CLIENT:
7099 case NL80211_IFTYPE_STATION:
7100 case NL80211_IFTYPE_ADHOC:
7101 case NL80211_IFTYPE_MESH_POINT:
7102 break;
7103 default:
7104 err = -EOPNOTSUPP;
7105 goto out_put_vlan;
7106 }
7107
7108 /* driver will call cfg80211_check_station_change() */
7109 wdev_lock(dev->ieee80211_ptr);
7110 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
7111 wdev_unlock(dev->ieee80211_ptr);
7112
7113 out_put_vlan:
7114 dev_put(params.vlan);
7115
7116 return err;
7117 }
7118
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)7119 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7120 {
7121 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7122 int err;
7123 struct net_device *dev = info->user_ptr[1];
7124 struct wireless_dev *wdev = dev->ieee80211_ptr;
7125 struct station_parameters params;
7126 u8 *mac_addr = NULL;
7127 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7128 BIT(NL80211_STA_FLAG_ASSOCIATED);
7129
7130 memset(¶ms, 0, sizeof(params));
7131
7132 if (!rdev->ops->add_station)
7133 return -EOPNOTSUPP;
7134
7135 if (!info->attrs[NL80211_ATTR_MAC])
7136 return -EINVAL;
7137
7138 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7139 return -EINVAL;
7140
7141 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7142 return -EINVAL;
7143
7144 if (!info->attrs[NL80211_ATTR_STA_AID] &&
7145 !info->attrs[NL80211_ATTR_PEER_AID])
7146 return -EINVAL;
7147
7148 params.link_sta_params.link_id =
7149 nl80211_link_id_or_invalid(info->attrs);
7150
7151 if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7152 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7153 params.link_sta_params.mld_mac = mac_addr;
7154 params.link_sta_params.link_mac =
7155 nla_data(info->attrs[NL80211_ATTR_MAC]);
7156 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7157 return -EINVAL;
7158 } else {
7159 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7160 }
7161
7162 params.link_sta_params.supported_rates =
7163 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7164 params.link_sta_params.supported_rates_len =
7165 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7166 params.listen_interval =
7167 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7168
7169 if (info->attrs[NL80211_ATTR_VLAN_ID])
7170 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7171
7172 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7173 params.support_p2p_ps =
7174 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7175 } else {
7176 /*
7177 * if not specified, assume it's supported for P2P GO interface,
7178 * and is NOT supported for AP interface
7179 */
7180 params.support_p2p_ps =
7181 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7182 }
7183
7184 if (info->attrs[NL80211_ATTR_PEER_AID])
7185 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7186 else
7187 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7188
7189 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7190 params.capability =
7191 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7192 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7193 }
7194
7195 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7196 params.ext_capab =
7197 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7198 params.ext_capab_len =
7199 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7200 }
7201
7202 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7203 params.link_sta_params.ht_capa =
7204 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7205
7206 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7207 params.link_sta_params.vht_capa =
7208 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7209
7210 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7211 params.link_sta_params.he_capa =
7212 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7213 params.link_sta_params.he_capa_len =
7214 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7215
7216 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7217 params.link_sta_params.eht_capa =
7218 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7219 params.link_sta_params.eht_capa_len =
7220 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7221
7222 if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7223 (const u8 *)params.link_sta_params.eht_capa,
7224 params.link_sta_params.eht_capa_len,
7225 false))
7226 return -EINVAL;
7227 }
7228 }
7229
7230 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7231 params.link_sta_params.he_6ghz_capa =
7232 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7233
7234 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7235 params.link_sta_params.opmode_notif_used = true;
7236 params.link_sta_params.opmode_notif =
7237 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7238 }
7239
7240 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7241 params.plink_action =
7242 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7243
7244 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7245 params.airtime_weight =
7246 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7247
7248 if (params.airtime_weight &&
7249 !wiphy_ext_feature_isset(&rdev->wiphy,
7250 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7251 return -EOPNOTSUPP;
7252
7253 err = nl80211_parse_sta_txpower_setting(info,
7254 ¶ms.link_sta_params.txpwr,
7255 ¶ms.link_sta_params.txpwr_set);
7256 if (err)
7257 return err;
7258
7259 err = nl80211_parse_sta_channel_info(info, ¶ms);
7260 if (err)
7261 return err;
7262
7263 err = nl80211_parse_sta_wme(info, ¶ms);
7264 if (err)
7265 return err;
7266
7267 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
7268 return -EINVAL;
7269
7270 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7271 * as userspace might just pass through the capabilities from the IEs
7272 * directly, rather than enforcing this restriction and returning an
7273 * error in this case.
7274 */
7275 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7276 params.link_sta_params.ht_capa = NULL;
7277 params.link_sta_params.vht_capa = NULL;
7278
7279 /* HE and EHT require WME */
7280 if (params.link_sta_params.he_capa_len ||
7281 params.link_sta_params.he_6ghz_capa ||
7282 params.link_sta_params.eht_capa_len)
7283 return -EINVAL;
7284 }
7285
7286 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7287 if (params.link_sta_params.he_6ghz_capa &&
7288 (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7289 return -EINVAL;
7290
7291 /* When you run into this, adjust the code below for the new flag */
7292 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7293
7294 switch (dev->ieee80211_ptr->iftype) {
7295 case NL80211_IFTYPE_AP:
7296 case NL80211_IFTYPE_AP_VLAN:
7297 case NL80211_IFTYPE_P2P_GO:
7298 /* ignore WME attributes if iface/sta is not capable */
7299 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7300 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7301 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7302
7303 /* TDLS peers cannot be added */
7304 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7305 info->attrs[NL80211_ATTR_PEER_AID])
7306 return -EINVAL;
7307 /* but don't bother the driver with it */
7308 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7309
7310 /* allow authenticated/associated only if driver handles it */
7311 if (!(rdev->wiphy.features &
7312 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7313 params.sta_flags_mask & auth_assoc)
7314 return -EINVAL;
7315
7316 /* Older userspace, or userspace wanting to be compatible with
7317 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7318 * and assoc flags in the mask, but assumes the station will be
7319 * added as associated anyway since this was the required driver
7320 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7321 * introduced.
7322 * In order to not bother drivers with this quirk in the API
7323 * set the flags in both the mask and set for new stations in
7324 * this case.
7325 */
7326 if (!(params.sta_flags_mask & auth_assoc)) {
7327 params.sta_flags_mask |= auth_assoc;
7328 params.sta_flags_set |= auth_assoc;
7329 }
7330
7331 /* must be last in here for error handling */
7332 params.vlan = get_vlan(info, rdev);
7333 if (IS_ERR(params.vlan))
7334 return PTR_ERR(params.vlan);
7335 break;
7336 case NL80211_IFTYPE_MESH_POINT:
7337 /* ignore uAPSD data */
7338 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7339
7340 /* associated is disallowed */
7341 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7342 return -EINVAL;
7343 /* TDLS peers cannot be added */
7344 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7345 info->attrs[NL80211_ATTR_PEER_AID])
7346 return -EINVAL;
7347 break;
7348 case NL80211_IFTYPE_STATION:
7349 case NL80211_IFTYPE_P2P_CLIENT:
7350 /* ignore uAPSD data */
7351 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7352
7353 /* these are disallowed */
7354 if (params.sta_flags_mask &
7355 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7356 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7357 return -EINVAL;
7358 /* Only TDLS peers can be added */
7359 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7360 return -EINVAL;
7361 /* Can only add if TDLS ... */
7362 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7363 return -EOPNOTSUPP;
7364 /* ... with external setup is supported */
7365 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7366 return -EOPNOTSUPP;
7367 /*
7368 * Older wpa_supplicant versions always mark the TDLS peer
7369 * as authorized, but it shouldn't yet be.
7370 */
7371 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7372 break;
7373 default:
7374 return -EOPNOTSUPP;
7375 }
7376
7377 /* be aware of params.vlan when changing code here */
7378
7379 wdev_lock(dev->ieee80211_ptr);
7380 if (wdev->valid_links) {
7381 if (params.link_sta_params.link_id < 0) {
7382 err = -EINVAL;
7383 goto out;
7384 }
7385 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7386 err = -ENOLINK;
7387 goto out;
7388 }
7389 } else {
7390 if (params.link_sta_params.link_id >= 0) {
7391 err = -EINVAL;
7392 goto out;
7393 }
7394 }
7395 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
7396 out:
7397 wdev_unlock(dev->ieee80211_ptr);
7398 dev_put(params.vlan);
7399 return err;
7400 }
7401
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)7402 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7403 {
7404 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7405 struct net_device *dev = info->user_ptr[1];
7406 struct station_del_parameters params;
7407 int ret;
7408
7409 memset(¶ms, 0, sizeof(params));
7410
7411 if (info->attrs[NL80211_ATTR_MAC])
7412 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7413
7414 switch (dev->ieee80211_ptr->iftype) {
7415 case NL80211_IFTYPE_AP:
7416 case NL80211_IFTYPE_AP_VLAN:
7417 case NL80211_IFTYPE_MESH_POINT:
7418 case NL80211_IFTYPE_P2P_GO:
7419 /* always accept these */
7420 break;
7421 case NL80211_IFTYPE_ADHOC:
7422 /* conditionally accept */
7423 if (wiphy_ext_feature_isset(&rdev->wiphy,
7424 NL80211_EXT_FEATURE_DEL_IBSS_STA))
7425 break;
7426 return -EINVAL;
7427 default:
7428 return -EINVAL;
7429 }
7430
7431 if (!rdev->ops->del_station)
7432 return -EOPNOTSUPP;
7433
7434 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7435 params.subtype =
7436 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7437 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7438 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7439 return -EINVAL;
7440 } else {
7441 /* Default to Deauthentication frame */
7442 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7443 }
7444
7445 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7446 params.reason_code =
7447 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7448 if (params.reason_code == 0)
7449 return -EINVAL; /* 0 is reserved */
7450 } else {
7451 /* Default to reason code 2 */
7452 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7453 }
7454
7455 wdev_lock(dev->ieee80211_ptr);
7456 ret = rdev_del_station(rdev, dev, ¶ms);
7457 wdev_unlock(dev->ieee80211_ptr);
7458
7459 return ret;
7460 }
7461
nl80211_send_mpath(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)7462 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7463 int flags, struct net_device *dev,
7464 u8 *dst, u8 *next_hop,
7465 struct mpath_info *pinfo)
7466 {
7467 void *hdr;
7468 struct nlattr *pinfoattr;
7469
7470 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7471 if (!hdr)
7472 return -1;
7473
7474 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7475 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7476 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7477 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7478 goto nla_put_failure;
7479
7480 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7481 if (!pinfoattr)
7482 goto nla_put_failure;
7483 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7484 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7485 pinfo->frame_qlen))
7486 goto nla_put_failure;
7487 if (((pinfo->filled & MPATH_INFO_SN) &&
7488 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7489 ((pinfo->filled & MPATH_INFO_METRIC) &&
7490 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7491 pinfo->metric)) ||
7492 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7493 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7494 pinfo->exptime)) ||
7495 ((pinfo->filled & MPATH_INFO_FLAGS) &&
7496 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7497 pinfo->flags)) ||
7498 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7499 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7500 pinfo->discovery_timeout)) ||
7501 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7502 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7503 pinfo->discovery_retries)) ||
7504 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7505 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7506 pinfo->hop_count)) ||
7507 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7508 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7509 pinfo->path_change_count)))
7510 goto nla_put_failure;
7511
7512 nla_nest_end(msg, pinfoattr);
7513
7514 genlmsg_end(msg, hdr);
7515 return 0;
7516
7517 nla_put_failure:
7518 genlmsg_cancel(msg, hdr);
7519 return -EMSGSIZE;
7520 }
7521
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)7522 static int nl80211_dump_mpath(struct sk_buff *skb,
7523 struct netlink_callback *cb)
7524 {
7525 struct mpath_info pinfo;
7526 struct cfg80211_registered_device *rdev;
7527 struct wireless_dev *wdev;
7528 u8 dst[ETH_ALEN];
7529 u8 next_hop[ETH_ALEN];
7530 int path_idx = cb->args[2];
7531 int err;
7532
7533 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7534 if (err)
7535 return err;
7536 /* nl80211_prepare_wdev_dump acquired it in the successful case */
7537 __acquire(&rdev->wiphy.mtx);
7538
7539 if (!rdev->ops->dump_mpath) {
7540 err = -EOPNOTSUPP;
7541 goto out_err;
7542 }
7543
7544 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7545 err = -EOPNOTSUPP;
7546 goto out_err;
7547 }
7548
7549 while (1) {
7550 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7551 next_hop, &pinfo);
7552 if (err == -ENOENT)
7553 break;
7554 if (err)
7555 goto out_err;
7556
7557 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7558 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7559 wdev->netdev, dst, next_hop,
7560 &pinfo) < 0)
7561 goto out;
7562
7563 path_idx++;
7564 }
7565
7566 out:
7567 cb->args[2] = path_idx;
7568 err = skb->len;
7569 out_err:
7570 wiphy_unlock(&rdev->wiphy);
7571 return err;
7572 }
7573
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)7574 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7575 {
7576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7577 int err;
7578 struct net_device *dev = info->user_ptr[1];
7579 struct mpath_info pinfo;
7580 struct sk_buff *msg;
7581 u8 *dst = NULL;
7582 u8 next_hop[ETH_ALEN];
7583
7584 memset(&pinfo, 0, sizeof(pinfo));
7585
7586 if (!info->attrs[NL80211_ATTR_MAC])
7587 return -EINVAL;
7588
7589 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7590
7591 if (!rdev->ops->get_mpath)
7592 return -EOPNOTSUPP;
7593
7594 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7595 return -EOPNOTSUPP;
7596
7597 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7598 if (err)
7599 return err;
7600
7601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7602 if (!msg)
7603 return -ENOMEM;
7604
7605 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7606 dev, dst, next_hop, &pinfo) < 0) {
7607 nlmsg_free(msg);
7608 return -ENOBUFS;
7609 }
7610
7611 return genlmsg_reply(msg, info);
7612 }
7613
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)7614 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7615 {
7616 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7617 struct net_device *dev = info->user_ptr[1];
7618 u8 *dst = NULL;
7619 u8 *next_hop = NULL;
7620
7621 if (!info->attrs[NL80211_ATTR_MAC])
7622 return -EINVAL;
7623
7624 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7625 return -EINVAL;
7626
7627 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7628 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7629
7630 if (!rdev->ops->change_mpath)
7631 return -EOPNOTSUPP;
7632
7633 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7634 return -EOPNOTSUPP;
7635
7636 return rdev_change_mpath(rdev, dev, dst, next_hop);
7637 }
7638
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)7639 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7640 {
7641 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7642 struct net_device *dev = info->user_ptr[1];
7643 u8 *dst = NULL;
7644 u8 *next_hop = NULL;
7645
7646 if (!info->attrs[NL80211_ATTR_MAC])
7647 return -EINVAL;
7648
7649 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7650 return -EINVAL;
7651
7652 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7653 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7654
7655 if (!rdev->ops->add_mpath)
7656 return -EOPNOTSUPP;
7657
7658 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7659 return -EOPNOTSUPP;
7660
7661 return rdev_add_mpath(rdev, dev, dst, next_hop);
7662 }
7663
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)7664 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7665 {
7666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7667 struct net_device *dev = info->user_ptr[1];
7668 u8 *dst = NULL;
7669
7670 if (info->attrs[NL80211_ATTR_MAC])
7671 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7672
7673 if (!rdev->ops->del_mpath)
7674 return -EOPNOTSUPP;
7675
7676 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7677 return -EOPNOTSUPP;
7678
7679 return rdev_del_mpath(rdev, dev, dst);
7680 }
7681
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)7682 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7683 {
7684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7685 int err;
7686 struct net_device *dev = info->user_ptr[1];
7687 struct mpath_info pinfo;
7688 struct sk_buff *msg;
7689 u8 *dst = NULL;
7690 u8 mpp[ETH_ALEN];
7691
7692 memset(&pinfo, 0, sizeof(pinfo));
7693
7694 if (!info->attrs[NL80211_ATTR_MAC])
7695 return -EINVAL;
7696
7697 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7698
7699 if (!rdev->ops->get_mpp)
7700 return -EOPNOTSUPP;
7701
7702 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7703 return -EOPNOTSUPP;
7704
7705 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7706 if (err)
7707 return err;
7708
7709 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7710 if (!msg)
7711 return -ENOMEM;
7712
7713 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7714 dev, dst, mpp, &pinfo) < 0) {
7715 nlmsg_free(msg);
7716 return -ENOBUFS;
7717 }
7718
7719 return genlmsg_reply(msg, info);
7720 }
7721
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)7722 static int nl80211_dump_mpp(struct sk_buff *skb,
7723 struct netlink_callback *cb)
7724 {
7725 struct mpath_info pinfo;
7726 struct cfg80211_registered_device *rdev;
7727 struct wireless_dev *wdev;
7728 u8 dst[ETH_ALEN];
7729 u8 mpp[ETH_ALEN];
7730 int path_idx = cb->args[2];
7731 int err;
7732
7733 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7734 if (err)
7735 return err;
7736 /* nl80211_prepare_wdev_dump acquired it in the successful case */
7737 __acquire(&rdev->wiphy.mtx);
7738
7739 if (!rdev->ops->dump_mpp) {
7740 err = -EOPNOTSUPP;
7741 goto out_err;
7742 }
7743
7744 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7745 err = -EOPNOTSUPP;
7746 goto out_err;
7747 }
7748
7749 while (1) {
7750 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7751 mpp, &pinfo);
7752 if (err == -ENOENT)
7753 break;
7754 if (err)
7755 goto out_err;
7756
7757 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7758 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7759 wdev->netdev, dst, mpp,
7760 &pinfo) < 0)
7761 goto out;
7762
7763 path_idx++;
7764 }
7765
7766 out:
7767 cb->args[2] = path_idx;
7768 err = skb->len;
7769 out_err:
7770 wiphy_unlock(&rdev->wiphy);
7771 return err;
7772 }
7773
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)7774 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7775 {
7776 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7777 struct net_device *dev = info->user_ptr[1];
7778 struct wireless_dev *wdev = dev->ieee80211_ptr;
7779 struct bss_parameters params;
7780 int err;
7781
7782 memset(¶ms, 0, sizeof(params));
7783 /* default to not changing parameters */
7784 params.use_cts_prot = -1;
7785 params.use_short_preamble = -1;
7786 params.use_short_slot_time = -1;
7787 params.ap_isolate = -1;
7788 params.ht_opmode = -1;
7789 params.p2p_ctwindow = -1;
7790 params.p2p_opp_ps = -1;
7791
7792 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7793 params.use_cts_prot =
7794 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7795 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7796 params.use_short_preamble =
7797 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7798 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7799 params.use_short_slot_time =
7800 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7801 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7802 params.basic_rates =
7803 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7804 params.basic_rates_len =
7805 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7806 }
7807 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7808 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7809 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7810 params.ht_opmode =
7811 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7812
7813 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7814 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7815 return -EINVAL;
7816 params.p2p_ctwindow =
7817 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7818 if (params.p2p_ctwindow != 0 &&
7819 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7820 return -EINVAL;
7821 }
7822
7823 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7824 u8 tmp;
7825
7826 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7827 return -EINVAL;
7828 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7829 params.p2p_opp_ps = tmp;
7830 if (params.p2p_opp_ps &&
7831 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7832 return -EINVAL;
7833 }
7834
7835 if (!rdev->ops->change_bss)
7836 return -EOPNOTSUPP;
7837
7838 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7839 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7840 return -EOPNOTSUPP;
7841
7842 wdev_lock(wdev);
7843 err = rdev_change_bss(rdev, dev, ¶ms);
7844 wdev_unlock(wdev);
7845
7846 return err;
7847 }
7848
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)7849 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7850 {
7851 char *data = NULL;
7852 bool is_indoor;
7853 enum nl80211_user_reg_hint_type user_reg_hint_type;
7854 u32 owner_nlportid;
7855
7856 /*
7857 * You should only get this when cfg80211 hasn't yet initialized
7858 * completely when built-in to the kernel right between the time
7859 * window between nl80211_init() and regulatory_init(), if that is
7860 * even possible.
7861 */
7862 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7863 return -EINPROGRESS;
7864
7865 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7866 user_reg_hint_type =
7867 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7868 else
7869 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7870
7871 switch (user_reg_hint_type) {
7872 case NL80211_USER_REG_HINT_USER:
7873 case NL80211_USER_REG_HINT_CELL_BASE:
7874 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7875 return -EINVAL;
7876
7877 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7878 return regulatory_hint_user(data, user_reg_hint_type);
7879 case NL80211_USER_REG_HINT_INDOOR:
7880 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7881 owner_nlportid = info->snd_portid;
7882 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7883 } else {
7884 owner_nlportid = 0;
7885 is_indoor = true;
7886 }
7887
7888 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7889 default:
7890 return -EINVAL;
7891 }
7892 }
7893
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)7894 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7895 {
7896 return reg_reload_regdb();
7897 }
7898
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)7899 static int nl80211_get_mesh_config(struct sk_buff *skb,
7900 struct genl_info *info)
7901 {
7902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7903 struct net_device *dev = info->user_ptr[1];
7904 struct wireless_dev *wdev = dev->ieee80211_ptr;
7905 struct mesh_config cur_params;
7906 int err = 0;
7907 void *hdr;
7908 struct nlattr *pinfoattr;
7909 struct sk_buff *msg;
7910
7911 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7912 return -EOPNOTSUPP;
7913
7914 if (!rdev->ops->get_mesh_config)
7915 return -EOPNOTSUPP;
7916
7917 wdev_lock(wdev);
7918 /* If not connected, get default parameters */
7919 if (!wdev->u.mesh.id_len)
7920 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7921 else
7922 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7923 wdev_unlock(wdev);
7924
7925 if (err)
7926 return err;
7927
7928 /* Draw up a netlink message to send back */
7929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7930 if (!msg)
7931 return -ENOMEM;
7932 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7933 NL80211_CMD_GET_MESH_CONFIG);
7934 if (!hdr)
7935 goto out;
7936 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7937 if (!pinfoattr)
7938 goto nla_put_failure;
7939 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7940 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7941 cur_params.dot11MeshRetryTimeout) ||
7942 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7943 cur_params.dot11MeshConfirmTimeout) ||
7944 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7945 cur_params.dot11MeshHoldingTimeout) ||
7946 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7947 cur_params.dot11MeshMaxPeerLinks) ||
7948 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7949 cur_params.dot11MeshMaxRetries) ||
7950 nla_put_u8(msg, NL80211_MESHCONF_TTL,
7951 cur_params.dot11MeshTTL) ||
7952 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7953 cur_params.element_ttl) ||
7954 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7955 cur_params.auto_open_plinks) ||
7956 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7957 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7958 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7959 cur_params.dot11MeshHWMPmaxPREQretries) ||
7960 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7961 cur_params.path_refresh_time) ||
7962 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7963 cur_params.min_discovery_timeout) ||
7964 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7965 cur_params.dot11MeshHWMPactivePathTimeout) ||
7966 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7967 cur_params.dot11MeshHWMPpreqMinInterval) ||
7968 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7969 cur_params.dot11MeshHWMPperrMinInterval) ||
7970 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7971 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7972 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7973 cur_params.dot11MeshHWMPRootMode) ||
7974 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7975 cur_params.dot11MeshHWMPRannInterval) ||
7976 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7977 cur_params.dot11MeshGateAnnouncementProtocol) ||
7978 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7979 cur_params.dot11MeshForwarding) ||
7980 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7981 cur_params.rssi_threshold) ||
7982 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7983 cur_params.ht_opmode) ||
7984 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7985 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7986 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7987 cur_params.dot11MeshHWMProotInterval) ||
7988 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7989 cur_params.dot11MeshHWMPconfirmationInterval) ||
7990 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7991 cur_params.power_mode) ||
7992 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7993 cur_params.dot11MeshAwakeWindowDuration) ||
7994 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7995 cur_params.plink_timeout) ||
7996 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7997 cur_params.dot11MeshConnectedToMeshGate) ||
7998 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7999 cur_params.dot11MeshNolearn) ||
8000 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8001 cur_params.dot11MeshConnectedToAuthServer))
8002 goto nla_put_failure;
8003 nla_nest_end(msg, pinfoattr);
8004 genlmsg_end(msg, hdr);
8005 return genlmsg_reply(msg, info);
8006
8007 nla_put_failure:
8008 out:
8009 nlmsg_free(msg);
8010 return -ENOBUFS;
8011 }
8012
8013 static const struct nla_policy
8014 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8015 [NL80211_MESHCONF_RETRY_TIMEOUT] =
8016 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8017 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8018 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8019 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8020 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8021 [NL80211_MESHCONF_MAX_PEER_LINKS] =
8022 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8023 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8024 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8025 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8026 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8027 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8028 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8029 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8030 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8031 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8032 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8033 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8034 NLA_POLICY_MIN(NLA_U16, 1),
8035 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8036 NLA_POLICY_MIN(NLA_U16, 1),
8037 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8038 NLA_POLICY_MIN(NLA_U16, 1),
8039 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8040 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8041 NLA_POLICY_MIN(NLA_U16, 1),
8042 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8043 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8044 [NL80211_MESHCONF_RSSI_THRESHOLD] =
8045 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8046 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8047 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8048 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8049 NLA_POLICY_MIN(NLA_U16, 1),
8050 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8051 NLA_POLICY_MIN(NLA_U16, 1),
8052 [NL80211_MESHCONF_POWER_MODE] =
8053 NLA_POLICY_RANGE(NLA_U32,
8054 NL80211_MESH_POWER_ACTIVE,
8055 NL80211_MESH_POWER_MAX),
8056 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8057 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8058 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8059 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8060 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8061 };
8062
8063 static const struct nla_policy
8064 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8065 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8066 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8067 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8068 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8069 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8070 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8071 [NL80211_MESH_SETUP_IE] =
8072 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8073 IEEE80211_MAX_DATA_LEN),
8074 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8075 };
8076
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)8077 static int nl80211_parse_mesh_config(struct genl_info *info,
8078 struct mesh_config *cfg,
8079 u32 *mask_out)
8080 {
8081 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8082 u32 mask = 0;
8083 u16 ht_opmode;
8084
8085 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
8086 do { \
8087 if (tb[attr]) { \
8088 cfg->param = fn(tb[attr]); \
8089 mask |= BIT((attr) - 1); \
8090 } \
8091 } while (0)
8092
8093 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8094 return -EINVAL;
8095 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8096 return -EINVAL;
8097
8098 /* This makes sure that there aren't more than 32 mesh config
8099 * parameters (otherwise our bitfield scheme would not work.) */
8100 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8101
8102 /* Fill in the params struct */
8103 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8104 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8105 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8106 NL80211_MESHCONF_CONFIRM_TIMEOUT,
8107 nla_get_u16);
8108 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8109 NL80211_MESHCONF_HOLDING_TIMEOUT,
8110 nla_get_u16);
8111 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8112 NL80211_MESHCONF_MAX_PEER_LINKS,
8113 nla_get_u16);
8114 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8115 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8116 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8117 NL80211_MESHCONF_TTL, nla_get_u8);
8118 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8119 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8120 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8121 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8122 nla_get_u8);
8123 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8124 mask,
8125 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8126 nla_get_u32);
8127 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8128 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8129 nla_get_u8);
8130 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8131 NL80211_MESHCONF_PATH_REFRESH_TIME,
8132 nla_get_u32);
8133 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8134 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8135 return -EINVAL;
8136 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8137 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8138 nla_get_u16);
8139 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8140 mask,
8141 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8142 nla_get_u32);
8143 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8144 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8145 cfg->dot11MeshHWMPactivePathTimeout > 65535))
8146 return -EINVAL;
8147 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8148 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8149 nla_get_u16);
8150 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8151 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8152 nla_get_u16);
8153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8154 dot11MeshHWMPnetDiameterTraversalTime, mask,
8155 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8156 nla_get_u16);
8157 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8158 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8159 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8160 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8161 nla_get_u16);
8162 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8163 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8164 nla_get_u8);
8165 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8166 NL80211_MESHCONF_FORWARDING, nla_get_u8);
8167 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8168 NL80211_MESHCONF_RSSI_THRESHOLD,
8169 nla_get_s32);
8170 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8171 NL80211_MESHCONF_CONNECTED_TO_GATE,
8172 nla_get_u8);
8173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8174 NL80211_MESHCONF_CONNECTED_TO_AS,
8175 nla_get_u8);
8176 /*
8177 * Check HT operation mode based on
8178 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8179 */
8180 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8181 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8182
8183 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8184 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8185 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8186 return -EINVAL;
8187
8188 /* NON_HT_STA bit is reserved, but some programs set it */
8189 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8190
8191 cfg->ht_opmode = ht_opmode;
8192 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8193 }
8194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8195 dot11MeshHWMPactivePathToRootTimeout, mask,
8196 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8197 nla_get_u32);
8198 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8199 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8200 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8201 return -EINVAL;
8202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8203 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8204 nla_get_u16);
8205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8206 mask,
8207 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8208 nla_get_u16);
8209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8210 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8212 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8214 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8216 NL80211_MESHCONF_NOLEARN, nla_get_u8);
8217 if (mask_out)
8218 *mask_out = mask;
8219
8220 return 0;
8221
8222 #undef FILL_IN_MESH_PARAM_IF_SET
8223 }
8224
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)8225 static int nl80211_parse_mesh_setup(struct genl_info *info,
8226 struct mesh_setup *setup)
8227 {
8228 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8229 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8230
8231 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8232 return -EINVAL;
8233 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8234 return -EINVAL;
8235
8236 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8237 setup->sync_method =
8238 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8239 IEEE80211_SYNC_METHOD_VENDOR :
8240 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8241
8242 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8243 setup->path_sel_proto =
8244 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8245 IEEE80211_PATH_PROTOCOL_VENDOR :
8246 IEEE80211_PATH_PROTOCOL_HWMP;
8247
8248 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8249 setup->path_metric =
8250 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8251 IEEE80211_PATH_METRIC_VENDOR :
8252 IEEE80211_PATH_METRIC_AIRTIME;
8253
8254 if (tb[NL80211_MESH_SETUP_IE]) {
8255 struct nlattr *ieattr =
8256 tb[NL80211_MESH_SETUP_IE];
8257 setup->ie = nla_data(ieattr);
8258 setup->ie_len = nla_len(ieattr);
8259 }
8260 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8261 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8262 return -EINVAL;
8263 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8264 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8265 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8266 if (setup->is_secure)
8267 setup->user_mpm = true;
8268
8269 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8270 if (!setup->user_mpm)
8271 return -EINVAL;
8272 setup->auth_id =
8273 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8274 }
8275
8276 return 0;
8277 }
8278
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)8279 static int nl80211_update_mesh_config(struct sk_buff *skb,
8280 struct genl_info *info)
8281 {
8282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8283 struct net_device *dev = info->user_ptr[1];
8284 struct wireless_dev *wdev = dev->ieee80211_ptr;
8285 struct mesh_config cfg;
8286 u32 mask;
8287 int err;
8288
8289 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8290 return -EOPNOTSUPP;
8291
8292 if (!rdev->ops->update_mesh_config)
8293 return -EOPNOTSUPP;
8294
8295 err = nl80211_parse_mesh_config(info, &cfg, &mask);
8296 if (err)
8297 return err;
8298
8299 wdev_lock(wdev);
8300 if (!wdev->u.mesh.id_len)
8301 err = -ENOLINK;
8302
8303 if (!err)
8304 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8305
8306 wdev_unlock(wdev);
8307
8308 return err;
8309 }
8310
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)8311 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8312 struct sk_buff *msg)
8313 {
8314 struct nlattr *nl_reg_rules;
8315 unsigned int i;
8316
8317 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8318 (regdom->dfs_region &&
8319 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8320 goto nla_put_failure;
8321
8322 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8323 if (!nl_reg_rules)
8324 goto nla_put_failure;
8325
8326 for (i = 0; i < regdom->n_reg_rules; i++) {
8327 struct nlattr *nl_reg_rule;
8328 const struct ieee80211_reg_rule *reg_rule;
8329 const struct ieee80211_freq_range *freq_range;
8330 const struct ieee80211_power_rule *power_rule;
8331 unsigned int max_bandwidth_khz;
8332
8333 reg_rule = ®dom->reg_rules[i];
8334 freq_range = ®_rule->freq_range;
8335 power_rule = ®_rule->power_rule;
8336
8337 nl_reg_rule = nla_nest_start_noflag(msg, i);
8338 if (!nl_reg_rule)
8339 goto nla_put_failure;
8340
8341 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8342 if (!max_bandwidth_khz)
8343 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8344 reg_rule);
8345
8346 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8347 reg_rule->flags) ||
8348 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8349 freq_range->start_freq_khz) ||
8350 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8351 freq_range->end_freq_khz) ||
8352 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8353 max_bandwidth_khz) ||
8354 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8355 power_rule->max_antenna_gain) ||
8356 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8357 power_rule->max_eirp) ||
8358 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8359 reg_rule->dfs_cac_ms))
8360 goto nla_put_failure;
8361
8362 nla_nest_end(msg, nl_reg_rule);
8363 }
8364
8365 nla_nest_end(msg, nl_reg_rules);
8366 return 0;
8367
8368 nla_put_failure:
8369 return -EMSGSIZE;
8370 }
8371
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)8372 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8373 {
8374 const struct ieee80211_regdomain *regdom = NULL;
8375 struct cfg80211_registered_device *rdev;
8376 struct wiphy *wiphy = NULL;
8377 struct sk_buff *msg;
8378 int err = -EMSGSIZE;
8379 void *hdr;
8380
8381 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8382 if (!msg)
8383 return -ENOBUFS;
8384
8385 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8386 NL80211_CMD_GET_REG);
8387 if (!hdr)
8388 goto put_failure;
8389
8390 rtnl_lock();
8391
8392 if (info->attrs[NL80211_ATTR_WIPHY]) {
8393 bool self_managed;
8394
8395 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8396 if (IS_ERR(rdev)) {
8397 err = PTR_ERR(rdev);
8398 goto nla_put_failure;
8399 }
8400
8401 wiphy = &rdev->wiphy;
8402 self_managed = wiphy->regulatory_flags &
8403 REGULATORY_WIPHY_SELF_MANAGED;
8404
8405 rcu_read_lock();
8406
8407 regdom = get_wiphy_regdom(wiphy);
8408
8409 /* a self-managed-reg device must have a private regdom */
8410 if (WARN_ON(!regdom && self_managed)) {
8411 err = -EINVAL;
8412 goto nla_put_failure_rcu;
8413 }
8414
8415 if (regdom &&
8416 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8417 goto nla_put_failure_rcu;
8418 } else {
8419 rcu_read_lock();
8420 }
8421
8422 if (!wiphy && reg_last_request_cell_base() &&
8423 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8424 NL80211_USER_REG_HINT_CELL_BASE))
8425 goto nla_put_failure_rcu;
8426
8427 if (!regdom)
8428 regdom = rcu_dereference(cfg80211_regdomain);
8429
8430 if (nl80211_put_regdom(regdom, msg))
8431 goto nla_put_failure_rcu;
8432
8433 rcu_read_unlock();
8434
8435 genlmsg_end(msg, hdr);
8436 rtnl_unlock();
8437 return genlmsg_reply(msg, info);
8438
8439 nla_put_failure_rcu:
8440 rcu_read_unlock();
8441 nla_put_failure:
8442 rtnl_unlock();
8443 put_failure:
8444 nlmsg_free(msg);
8445 return err;
8446 }
8447
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)8448 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8449 u32 seq, int flags, struct wiphy *wiphy,
8450 const struct ieee80211_regdomain *regdom)
8451 {
8452 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8453 NL80211_CMD_GET_REG);
8454
8455 if (!hdr)
8456 return -1;
8457
8458 genl_dump_check_consistent(cb, hdr);
8459
8460 if (nl80211_put_regdom(regdom, msg))
8461 goto nla_put_failure;
8462
8463 if (!wiphy && reg_last_request_cell_base() &&
8464 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8465 NL80211_USER_REG_HINT_CELL_BASE))
8466 goto nla_put_failure;
8467
8468 if (wiphy &&
8469 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8470 goto nla_put_failure;
8471
8472 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8473 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8474 goto nla_put_failure;
8475
8476 genlmsg_end(msg, hdr);
8477 return 0;
8478
8479 nla_put_failure:
8480 genlmsg_cancel(msg, hdr);
8481 return -EMSGSIZE;
8482 }
8483
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)8484 static int nl80211_get_reg_dump(struct sk_buff *skb,
8485 struct netlink_callback *cb)
8486 {
8487 const struct ieee80211_regdomain *regdom = NULL;
8488 struct cfg80211_registered_device *rdev;
8489 int err, reg_idx, start = cb->args[2];
8490
8491 rcu_read_lock();
8492
8493 if (cfg80211_regdomain && start == 0) {
8494 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8495 NLM_F_MULTI, NULL,
8496 rcu_dereference(cfg80211_regdomain));
8497 if (err < 0)
8498 goto out_err;
8499 }
8500
8501 /* the global regdom is idx 0 */
8502 reg_idx = 1;
8503 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8504 regdom = get_wiphy_regdom(&rdev->wiphy);
8505 if (!regdom)
8506 continue;
8507
8508 if (++reg_idx <= start)
8509 continue;
8510
8511 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8512 NLM_F_MULTI, &rdev->wiphy, regdom);
8513 if (err < 0) {
8514 reg_idx--;
8515 break;
8516 }
8517 }
8518
8519 cb->args[2] = reg_idx;
8520 err = skb->len;
8521 out_err:
8522 rcu_read_unlock();
8523 return err;
8524 }
8525
8526 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8527 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8528 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
8529 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
8530 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
8531 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
8532 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
8533 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
8534 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
8535 };
8536
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)8537 static int parse_reg_rule(struct nlattr *tb[],
8538 struct ieee80211_reg_rule *reg_rule)
8539 {
8540 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
8541 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
8542
8543 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8544 return -EINVAL;
8545 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8546 return -EINVAL;
8547 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8548 return -EINVAL;
8549 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8550 return -EINVAL;
8551 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8552 return -EINVAL;
8553
8554 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8555
8556 freq_range->start_freq_khz =
8557 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8558 freq_range->end_freq_khz =
8559 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8560 freq_range->max_bandwidth_khz =
8561 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8562
8563 power_rule->max_eirp =
8564 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8565
8566 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8567 power_rule->max_antenna_gain =
8568 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8569
8570 if (tb[NL80211_ATTR_DFS_CAC_TIME])
8571 reg_rule->dfs_cac_ms =
8572 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8573
8574 return 0;
8575 }
8576
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)8577 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8578 {
8579 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8580 struct nlattr *nl_reg_rule;
8581 char *alpha2;
8582 int rem_reg_rules, r;
8583 u32 num_rules = 0, rule_idx = 0;
8584 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8585 struct ieee80211_regdomain *rd;
8586
8587 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8588 return -EINVAL;
8589
8590 if (!info->attrs[NL80211_ATTR_REG_RULES])
8591 return -EINVAL;
8592
8593 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8594
8595 if (info->attrs[NL80211_ATTR_DFS_REGION])
8596 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8597
8598 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8599 rem_reg_rules) {
8600 num_rules++;
8601 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8602 return -EINVAL;
8603 }
8604
8605 rtnl_lock();
8606 if (!reg_is_valid_request(alpha2)) {
8607 r = -EINVAL;
8608 goto out;
8609 }
8610
8611 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8612 if (!rd) {
8613 r = -ENOMEM;
8614 goto out;
8615 }
8616
8617 rd->n_reg_rules = num_rules;
8618 rd->alpha2[0] = alpha2[0];
8619 rd->alpha2[1] = alpha2[1];
8620
8621 /*
8622 * Disable DFS master mode if the DFS region was
8623 * not supported or known on this kernel.
8624 */
8625 if (reg_supported_dfs_region(dfs_region))
8626 rd->dfs_region = dfs_region;
8627
8628 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8629 rem_reg_rules) {
8630 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8631 nl_reg_rule, reg_rule_policy,
8632 info->extack);
8633 if (r)
8634 goto bad_reg;
8635 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8636 if (r)
8637 goto bad_reg;
8638
8639 rule_idx++;
8640
8641 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8642 r = -EINVAL;
8643 goto bad_reg;
8644 }
8645 }
8646
8647 r = set_regdom(rd, REGD_SOURCE_CRDA);
8648 /* set_regdom takes ownership of rd */
8649 rd = NULL;
8650 bad_reg:
8651 kfree(rd);
8652 out:
8653 rtnl_unlock();
8654 return r;
8655 }
8656 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8657
validate_scan_freqs(struct nlattr * freqs)8658 static int validate_scan_freqs(struct nlattr *freqs)
8659 {
8660 struct nlattr *attr1, *attr2;
8661 int n_channels = 0, tmp1, tmp2;
8662
8663 nla_for_each_nested(attr1, freqs, tmp1)
8664 if (nla_len(attr1) != sizeof(u32))
8665 return 0;
8666
8667 nla_for_each_nested(attr1, freqs, tmp1) {
8668 n_channels++;
8669 /*
8670 * Some hardware has a limited channel list for
8671 * scanning, and it is pretty much nonsensical
8672 * to scan for a channel twice, so disallow that
8673 * and don't require drivers to check that the
8674 * channel list they get isn't longer than what
8675 * they can scan, as long as they can scan all
8676 * the channels they registered at once.
8677 */
8678 nla_for_each_nested(attr2, freqs, tmp2)
8679 if (attr1 != attr2 &&
8680 nla_get_u32(attr1) == nla_get_u32(attr2))
8681 return 0;
8682 }
8683
8684 return n_channels;
8685 }
8686
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)8687 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8688 {
8689 return b < NUM_NL80211_BANDS && wiphy->bands[b];
8690 }
8691
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)8692 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8693 struct cfg80211_bss_selection *bss_select)
8694 {
8695 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8696 struct nlattr *nest;
8697 int err;
8698 bool found = false;
8699 int i;
8700
8701 /* only process one nested attribute */
8702 nest = nla_data(nla);
8703 if (!nla_ok(nest, nla_len(nest)))
8704 return -EINVAL;
8705
8706 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8707 nest, nl80211_bss_select_policy,
8708 NULL);
8709 if (err)
8710 return err;
8711
8712 /* only one attribute may be given */
8713 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8714 if (attr[i]) {
8715 if (found)
8716 return -EINVAL;
8717 found = true;
8718 }
8719 }
8720
8721 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8722
8723 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8724 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8725
8726 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8727 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8728 bss_select->param.band_pref =
8729 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8730 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8731 return -EINVAL;
8732 }
8733
8734 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8735 struct nl80211_bss_select_rssi_adjust *adj_param;
8736
8737 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8738 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8739 bss_select->param.adjust.band = adj_param->band;
8740 bss_select->param.adjust.delta = adj_param->delta;
8741 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8742 return -EINVAL;
8743 }
8744
8745 /* user-space did not provide behaviour attribute */
8746 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8747 return -EINVAL;
8748
8749 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8750 return -EINVAL;
8751
8752 return 0;
8753 }
8754
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)8755 int nl80211_parse_random_mac(struct nlattr **attrs,
8756 u8 *mac_addr, u8 *mac_addr_mask)
8757 {
8758 int i;
8759
8760 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8761 eth_zero_addr(mac_addr);
8762 eth_zero_addr(mac_addr_mask);
8763 mac_addr[0] = 0x2;
8764 mac_addr_mask[0] = 0x3;
8765
8766 return 0;
8767 }
8768
8769 /* need both or none */
8770 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8771 return -EINVAL;
8772
8773 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8774 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8775
8776 /* don't allow or configure an mcast address */
8777 if (!is_multicast_ether_addr(mac_addr_mask) ||
8778 is_multicast_ether_addr(mac_addr))
8779 return -EINVAL;
8780
8781 /*
8782 * allow users to pass a MAC address that has bits set outside
8783 * of the mask, but don't bother drivers with having to deal
8784 * with such bits
8785 */
8786 for (i = 0; i < ETH_ALEN; i++)
8787 mac_addr[i] &= mac_addr_mask[i];
8788
8789 return 0;
8790 }
8791
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev,struct ieee80211_channel * chan)8792 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8793 struct ieee80211_channel *chan)
8794 {
8795 unsigned int link_id;
8796 bool all_ok = true;
8797
8798 ASSERT_WDEV_LOCK(wdev);
8799
8800 if (!cfg80211_beaconing_iface_active(wdev))
8801 return true;
8802
8803 /*
8804 * FIXME: check if we have a free HW resource/link for chan
8805 *
8806 * This, as well as the FIXME below, requires knowing the link
8807 * capabilities of the hardware.
8808 */
8809
8810 /* we cannot leave radar channels */
8811 for_each_valid_link(wdev, link_id) {
8812 struct cfg80211_chan_def *chandef;
8813
8814 chandef = wdev_chandef(wdev, link_id);
8815 if (!chandef)
8816 continue;
8817
8818 /*
8819 * FIXME: don't require all_ok, but rather check only the
8820 * correct HW resource/link onto which 'chan' falls,
8821 * as only that link leaves the channel for doing
8822 * the off-channel operation.
8823 */
8824
8825 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8826 all_ok = false;
8827 }
8828
8829 if (all_ok)
8830 return true;
8831
8832 return regulatory_pre_cac_allowed(wdev->wiphy);
8833 }
8834
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)8835 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8836 enum nl80211_ext_feature_index feat)
8837 {
8838 if (!(flags & flag))
8839 return true;
8840 if (wiphy_ext_feature_isset(wiphy, feat))
8841 return true;
8842 return false;
8843 }
8844
8845 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)8846 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8847 void *request, struct nlattr **attrs,
8848 bool is_sched_scan)
8849 {
8850 u8 *mac_addr, *mac_addr_mask;
8851 u32 *flags;
8852 enum nl80211_feature_flags randomness_flag;
8853
8854 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8855 return 0;
8856
8857 if (is_sched_scan) {
8858 struct cfg80211_sched_scan_request *req = request;
8859
8860 randomness_flag = wdev ?
8861 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8862 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8863 flags = &req->flags;
8864 mac_addr = req->mac_addr;
8865 mac_addr_mask = req->mac_addr_mask;
8866 } else {
8867 struct cfg80211_scan_request *req = request;
8868
8869 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8870 flags = &req->flags;
8871 mac_addr = req->mac_addr;
8872 mac_addr_mask = req->mac_addr_mask;
8873 }
8874
8875 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8876
8877 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8878 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8879 !nl80211_check_scan_feat(wiphy, *flags,
8880 NL80211_SCAN_FLAG_LOW_SPAN,
8881 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8882 !nl80211_check_scan_feat(wiphy, *flags,
8883 NL80211_SCAN_FLAG_LOW_POWER,
8884 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8885 !nl80211_check_scan_feat(wiphy, *flags,
8886 NL80211_SCAN_FLAG_HIGH_ACCURACY,
8887 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8888 !nl80211_check_scan_feat(wiphy, *flags,
8889 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8890 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8891 !nl80211_check_scan_feat(wiphy, *flags,
8892 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8893 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8894 !nl80211_check_scan_feat(wiphy, *flags,
8895 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8896 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8897 !nl80211_check_scan_feat(wiphy, *flags,
8898 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8899 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8900 !nl80211_check_scan_feat(wiphy, *flags,
8901 NL80211_SCAN_FLAG_RANDOM_SN,
8902 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8903 !nl80211_check_scan_feat(wiphy, *flags,
8904 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8905 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8906 return -EOPNOTSUPP;
8907
8908 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8909 int err;
8910
8911 if (!(wiphy->features & randomness_flag) ||
8912 (wdev && wdev->connected))
8913 return -EOPNOTSUPP;
8914
8915 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8916 if (err)
8917 return err;
8918 }
8919
8920 return 0;
8921 }
8922
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)8923 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8924 {
8925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8926 struct wireless_dev *wdev = info->user_ptr[1];
8927 struct cfg80211_scan_request *request;
8928 struct nlattr *scan_freqs = NULL;
8929 bool scan_freqs_khz = false;
8930 struct nlattr *attr;
8931 struct wiphy *wiphy;
8932 int err, tmp, n_ssids = 0, n_channels, i;
8933 size_t ie_len;
8934
8935 wiphy = &rdev->wiphy;
8936
8937 if (wdev->iftype == NL80211_IFTYPE_NAN)
8938 return -EOPNOTSUPP;
8939
8940 if (!rdev->ops->scan)
8941 return -EOPNOTSUPP;
8942
8943 if (rdev->scan_req || rdev->scan_msg)
8944 return -EBUSY;
8945
8946 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8947 if (!wiphy_ext_feature_isset(wiphy,
8948 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8949 return -EOPNOTSUPP;
8950 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8951 scan_freqs_khz = true;
8952 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8953 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8954
8955 if (scan_freqs) {
8956 n_channels = validate_scan_freqs(scan_freqs);
8957 if (!n_channels)
8958 return -EINVAL;
8959 } else {
8960 n_channels = ieee80211_get_num_supported_channels(wiphy);
8961 }
8962
8963 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8964 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8965 n_ssids++;
8966
8967 if (n_ssids > wiphy->max_scan_ssids)
8968 return -EINVAL;
8969
8970 if (info->attrs[NL80211_ATTR_IE])
8971 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8972 else
8973 ie_len = 0;
8974
8975 if (ie_len > wiphy->max_scan_ie_len)
8976 return -EINVAL;
8977
8978 request = kzalloc(sizeof(*request)
8979 + sizeof(*request->ssids) * n_ssids
8980 + sizeof(*request->channels) * n_channels
8981 + ie_len, GFP_KERNEL);
8982 if (!request)
8983 return -ENOMEM;
8984
8985 if (n_ssids)
8986 request->ssids = (void *)&request->channels[n_channels];
8987 request->n_ssids = n_ssids;
8988 if (ie_len) {
8989 if (n_ssids)
8990 request->ie = (void *)(request->ssids + n_ssids);
8991 else
8992 request->ie = (void *)(request->channels + n_channels);
8993 }
8994
8995 i = 0;
8996 if (scan_freqs) {
8997 /* user specified, bail out if channel not found */
8998 nla_for_each_nested(attr, scan_freqs, tmp) {
8999 struct ieee80211_channel *chan;
9000 int freq = nla_get_u32(attr);
9001
9002 if (!scan_freqs_khz)
9003 freq = MHZ_TO_KHZ(freq);
9004
9005 chan = ieee80211_get_channel_khz(wiphy, freq);
9006 if (!chan) {
9007 err = -EINVAL;
9008 goto out_free;
9009 }
9010
9011 /* ignore disabled channels */
9012 if (chan->flags & IEEE80211_CHAN_DISABLED)
9013 continue;
9014
9015 request->channels[i] = chan;
9016 i++;
9017 }
9018 } else {
9019 enum nl80211_band band;
9020
9021 /* all channels */
9022 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9023 int j;
9024
9025 if (!wiphy->bands[band])
9026 continue;
9027 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9028 struct ieee80211_channel *chan;
9029
9030 chan = &wiphy->bands[band]->channels[j];
9031
9032 if (chan->flags & IEEE80211_CHAN_DISABLED)
9033 continue;
9034
9035 request->channels[i] = chan;
9036 i++;
9037 }
9038 }
9039 }
9040
9041 if (!i) {
9042 err = -EINVAL;
9043 goto out_free;
9044 }
9045
9046 request->n_channels = i;
9047
9048 wdev_lock(wdev);
9049 for (i = 0; i < request->n_channels; i++) {
9050 struct ieee80211_channel *chan = request->channels[i];
9051
9052 /* if we can go off-channel to the target channel we're good */
9053 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9054 continue;
9055
9056 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9057 wdev_unlock(wdev);
9058 err = -EBUSY;
9059 goto out_free;
9060 }
9061 }
9062 wdev_unlock(wdev);
9063
9064 i = 0;
9065 if (n_ssids) {
9066 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9067 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9068 err = -EINVAL;
9069 goto out_free;
9070 }
9071 request->ssids[i].ssid_len = nla_len(attr);
9072 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9073 i++;
9074 }
9075 }
9076
9077 if (info->attrs[NL80211_ATTR_IE]) {
9078 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9079 memcpy((void *)request->ie,
9080 nla_data(info->attrs[NL80211_ATTR_IE]),
9081 request->ie_len);
9082 }
9083
9084 for (i = 0; i < NUM_NL80211_BANDS; i++)
9085 if (wiphy->bands[i])
9086 request->rates[i] =
9087 (1 << wiphy->bands[i]->n_bitrates) - 1;
9088
9089 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9090 nla_for_each_nested(attr,
9091 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9092 tmp) {
9093 enum nl80211_band band = nla_type(attr);
9094
9095 if (band < 0 || band >= NUM_NL80211_BANDS) {
9096 err = -EINVAL;
9097 goto out_free;
9098 }
9099
9100 if (!wiphy->bands[band])
9101 continue;
9102
9103 err = ieee80211_get_ratemask(wiphy->bands[band],
9104 nla_data(attr),
9105 nla_len(attr),
9106 &request->rates[band]);
9107 if (err)
9108 goto out_free;
9109 }
9110 }
9111
9112 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9113 request->duration =
9114 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9115 request->duration_mandatory =
9116 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9117 }
9118
9119 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9120 false);
9121 if (err)
9122 goto out_free;
9123
9124 request->no_cck =
9125 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9126
9127 /* Initial implementation used NL80211_ATTR_MAC to set the specific
9128 * BSSID to scan for. This was problematic because that same attribute
9129 * was already used for another purpose (local random MAC address). The
9130 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9131 * compatibility with older userspace components, also use the
9132 * NL80211_ATTR_MAC value here if it can be determined to be used for
9133 * the specific BSSID use case instead of the random MAC address
9134 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9135 */
9136 if (info->attrs[NL80211_ATTR_BSSID])
9137 memcpy(request->bssid,
9138 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9139 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9140 info->attrs[NL80211_ATTR_MAC])
9141 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9142 ETH_ALEN);
9143 else
9144 eth_broadcast_addr(request->bssid);
9145
9146 request->wdev = wdev;
9147 request->wiphy = &rdev->wiphy;
9148 request->scan_start = jiffies;
9149
9150 rdev->scan_req = request;
9151 err = cfg80211_scan(rdev);
9152
9153 if (err)
9154 goto out_free;
9155
9156 nl80211_send_scan_start(rdev, wdev);
9157 dev_hold(wdev->netdev);
9158
9159 return 0;
9160
9161 out_free:
9162 rdev->scan_req = NULL;
9163 kfree(request);
9164
9165 return err;
9166 }
9167
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)9168 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9169 {
9170 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9171 struct wireless_dev *wdev = info->user_ptr[1];
9172
9173 if (!rdev->ops->abort_scan)
9174 return -EOPNOTSUPP;
9175
9176 if (rdev->scan_msg)
9177 return 0;
9178
9179 if (!rdev->scan_req)
9180 return -ENOENT;
9181
9182 rdev_abort_scan(rdev, wdev);
9183 return 0;
9184 }
9185
9186 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)9187 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9188 struct cfg80211_sched_scan_request *request,
9189 struct nlattr **attrs)
9190 {
9191 int tmp, err, i = 0;
9192 struct nlattr *attr;
9193
9194 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9195 u32 interval;
9196
9197 /*
9198 * If scan plans are not specified,
9199 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9200 * case one scan plan will be set with the specified scan
9201 * interval and infinite number of iterations.
9202 */
9203 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9204 if (!interval)
9205 return -EINVAL;
9206
9207 request->scan_plans[0].interval =
9208 DIV_ROUND_UP(interval, MSEC_PER_SEC);
9209 if (!request->scan_plans[0].interval)
9210 return -EINVAL;
9211
9212 if (request->scan_plans[0].interval >
9213 wiphy->max_sched_scan_plan_interval)
9214 request->scan_plans[0].interval =
9215 wiphy->max_sched_scan_plan_interval;
9216
9217 return 0;
9218 }
9219
9220 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9221 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9222
9223 if (WARN_ON(i >= n_plans))
9224 return -EINVAL;
9225
9226 err = nla_parse_nested_deprecated(plan,
9227 NL80211_SCHED_SCAN_PLAN_MAX,
9228 attr, nl80211_plan_policy,
9229 NULL);
9230 if (err)
9231 return err;
9232
9233 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9234 return -EINVAL;
9235
9236 request->scan_plans[i].interval =
9237 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9238 if (!request->scan_plans[i].interval ||
9239 request->scan_plans[i].interval >
9240 wiphy->max_sched_scan_plan_interval)
9241 return -EINVAL;
9242
9243 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9244 request->scan_plans[i].iterations =
9245 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9246 if (!request->scan_plans[i].iterations ||
9247 (request->scan_plans[i].iterations >
9248 wiphy->max_sched_scan_plan_iterations))
9249 return -EINVAL;
9250 } else if (i < n_plans - 1) {
9251 /*
9252 * All scan plans but the last one must specify
9253 * a finite number of iterations
9254 */
9255 return -EINVAL;
9256 }
9257
9258 i++;
9259 }
9260
9261 /*
9262 * The last scan plan must not specify the number of
9263 * iterations, it is supposed to run infinitely
9264 */
9265 if (request->scan_plans[n_plans - 1].iterations)
9266 return -EINVAL;
9267
9268 return 0;
9269 }
9270
9271 static int
nl80211_parse_sched_scan_per_band_rssi(struct wiphy * wiphy,struct cfg80211_match_set * match_sets,struct nlattr * tb_band_rssi,s32 rssi_thold)9272 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9273 struct cfg80211_match_set *match_sets,
9274 struct nlattr *tb_band_rssi,
9275 s32 rssi_thold)
9276 {
9277 struct nlattr *attr;
9278 int i, tmp, ret = 0;
9279
9280 if (!wiphy_ext_feature_isset(wiphy,
9281 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9282 if (tb_band_rssi)
9283 ret = -EOPNOTSUPP;
9284 else
9285 for (i = 0; i < NUM_NL80211_BANDS; i++)
9286 match_sets->per_band_rssi_thold[i] =
9287 NL80211_SCAN_RSSI_THOLD_OFF;
9288 return ret;
9289 }
9290
9291 for (i = 0; i < NUM_NL80211_BANDS; i++)
9292 match_sets->per_band_rssi_thold[i] = rssi_thold;
9293
9294 nla_for_each_nested(attr, tb_band_rssi, tmp) {
9295 enum nl80211_band band = nla_type(attr);
9296
9297 if (band < 0 || band >= NUM_NL80211_BANDS)
9298 return -EINVAL;
9299
9300 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9301 }
9302
9303 return 0;
9304 }
9305
9306 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)9307 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9308 struct nlattr **attrs, int max_match_sets)
9309 {
9310 struct cfg80211_sched_scan_request *request;
9311 struct nlattr *attr;
9312 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9313 enum nl80211_band band;
9314 size_t ie_len;
9315 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9316 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9317
9318 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9319 n_channels = validate_scan_freqs(
9320 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9321 if (!n_channels)
9322 return ERR_PTR(-EINVAL);
9323 } else {
9324 n_channels = ieee80211_get_num_supported_channels(wiphy);
9325 }
9326
9327 if (attrs[NL80211_ATTR_SCAN_SSIDS])
9328 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9329 tmp)
9330 n_ssids++;
9331
9332 if (n_ssids > wiphy->max_sched_scan_ssids)
9333 return ERR_PTR(-EINVAL);
9334
9335 /*
9336 * First, count the number of 'real' matchsets. Due to an issue with
9337 * the old implementation, matchsets containing only the RSSI attribute
9338 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9339 * RSSI for all matchsets, rather than their own matchset for reporting
9340 * all APs with a strong RSSI. This is needed to be compatible with
9341 * older userspace that treated a matchset with only the RSSI as the
9342 * global RSSI for all other matchsets - if there are other matchsets.
9343 */
9344 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9345 nla_for_each_nested(attr,
9346 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9347 tmp) {
9348 struct nlattr *rssi;
9349
9350 err = nla_parse_nested_deprecated(tb,
9351 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9352 attr,
9353 nl80211_match_policy,
9354 NULL);
9355 if (err)
9356 return ERR_PTR(err);
9357
9358 /* SSID and BSSID are mutually exclusive */
9359 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9360 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9361 return ERR_PTR(-EINVAL);
9362
9363 /* add other standalone attributes here */
9364 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9365 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9366 n_match_sets++;
9367 continue;
9368 }
9369 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9370 if (rssi)
9371 default_match_rssi = nla_get_s32(rssi);
9372 }
9373 }
9374
9375 /* However, if there's no other matchset, add the RSSI one */
9376 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9377 n_match_sets = 1;
9378
9379 if (n_match_sets > max_match_sets)
9380 return ERR_PTR(-EINVAL);
9381
9382 if (attrs[NL80211_ATTR_IE])
9383 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9384 else
9385 ie_len = 0;
9386
9387 if (ie_len > wiphy->max_sched_scan_ie_len)
9388 return ERR_PTR(-EINVAL);
9389
9390 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9391 /*
9392 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9393 * each scan plan already specifies its own interval
9394 */
9395 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9396 return ERR_PTR(-EINVAL);
9397
9398 nla_for_each_nested(attr,
9399 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9400 n_plans++;
9401 } else {
9402 /*
9403 * The scan interval attribute is kept for backward
9404 * compatibility. If no scan plans are specified and sched scan
9405 * interval is specified, one scan plan will be set with this
9406 * scan interval and infinite number of iterations.
9407 */
9408 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9409 return ERR_PTR(-EINVAL);
9410
9411 n_plans = 1;
9412 }
9413
9414 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9415 return ERR_PTR(-EINVAL);
9416
9417 if (!wiphy_ext_feature_isset(
9418 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9419 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9420 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9421 return ERR_PTR(-EINVAL);
9422
9423 request = kzalloc(sizeof(*request)
9424 + sizeof(*request->ssids) * n_ssids
9425 + sizeof(*request->match_sets) * n_match_sets
9426 + sizeof(*request->scan_plans) * n_plans
9427 + sizeof(*request->channels) * n_channels
9428 + ie_len, GFP_KERNEL);
9429 if (!request)
9430 return ERR_PTR(-ENOMEM);
9431
9432 if (n_ssids)
9433 request->ssids = (void *)&request->channels[n_channels];
9434 request->n_ssids = n_ssids;
9435 if (ie_len) {
9436 if (n_ssids)
9437 request->ie = (void *)(request->ssids + n_ssids);
9438 else
9439 request->ie = (void *)(request->channels + n_channels);
9440 }
9441
9442 if (n_match_sets) {
9443 if (request->ie)
9444 request->match_sets = (void *)(request->ie + ie_len);
9445 else if (n_ssids)
9446 request->match_sets =
9447 (void *)(request->ssids + n_ssids);
9448 else
9449 request->match_sets =
9450 (void *)(request->channels + n_channels);
9451 }
9452 request->n_match_sets = n_match_sets;
9453
9454 if (n_match_sets)
9455 request->scan_plans = (void *)(request->match_sets +
9456 n_match_sets);
9457 else if (request->ie)
9458 request->scan_plans = (void *)(request->ie + ie_len);
9459 else if (n_ssids)
9460 request->scan_plans = (void *)(request->ssids + n_ssids);
9461 else
9462 request->scan_plans = (void *)(request->channels + n_channels);
9463
9464 request->n_scan_plans = n_plans;
9465
9466 i = 0;
9467 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9468 /* user specified, bail out if channel not found */
9469 nla_for_each_nested(attr,
9470 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9471 tmp) {
9472 struct ieee80211_channel *chan;
9473
9474 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9475
9476 if (!chan) {
9477 err = -EINVAL;
9478 goto out_free;
9479 }
9480
9481 /* ignore disabled channels */
9482 if (chan->flags & IEEE80211_CHAN_DISABLED)
9483 continue;
9484
9485 request->channels[i] = chan;
9486 i++;
9487 }
9488 } else {
9489 /* all channels */
9490 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9491 int j;
9492
9493 if (!wiphy->bands[band])
9494 continue;
9495 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9496 struct ieee80211_channel *chan;
9497
9498 chan = &wiphy->bands[band]->channels[j];
9499
9500 if (chan->flags & IEEE80211_CHAN_DISABLED)
9501 continue;
9502
9503 request->channels[i] = chan;
9504 i++;
9505 }
9506 }
9507 }
9508
9509 if (!i) {
9510 err = -EINVAL;
9511 goto out_free;
9512 }
9513
9514 request->n_channels = i;
9515
9516 i = 0;
9517 if (n_ssids) {
9518 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9519 tmp) {
9520 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9521 err = -EINVAL;
9522 goto out_free;
9523 }
9524 request->ssids[i].ssid_len = nla_len(attr);
9525 memcpy(request->ssids[i].ssid, nla_data(attr),
9526 nla_len(attr));
9527 i++;
9528 }
9529 }
9530
9531 i = 0;
9532 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9533 nla_for_each_nested(attr,
9534 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9535 tmp) {
9536 struct nlattr *ssid, *bssid, *rssi;
9537
9538 err = nla_parse_nested_deprecated(tb,
9539 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9540 attr,
9541 nl80211_match_policy,
9542 NULL);
9543 if (err)
9544 goto out_free;
9545 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9546 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9547
9548 if (!ssid && !bssid) {
9549 i++;
9550 continue;
9551 }
9552
9553 if (WARN_ON(i >= n_match_sets)) {
9554 /* this indicates a programming error,
9555 * the loop above should have verified
9556 * things properly
9557 */
9558 err = -EINVAL;
9559 goto out_free;
9560 }
9561
9562 if (ssid) {
9563 memcpy(request->match_sets[i].ssid.ssid,
9564 nla_data(ssid), nla_len(ssid));
9565 request->match_sets[i].ssid.ssid_len =
9566 nla_len(ssid);
9567 }
9568 if (bssid)
9569 memcpy(request->match_sets[i].bssid,
9570 nla_data(bssid), ETH_ALEN);
9571
9572 /* special attribute - old implementation w/a */
9573 request->match_sets[i].rssi_thold = default_match_rssi;
9574 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9575 if (rssi)
9576 request->match_sets[i].rssi_thold =
9577 nla_get_s32(rssi);
9578
9579 /* Parse per band RSSI attribute */
9580 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9581 &request->match_sets[i],
9582 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9583 request->match_sets[i].rssi_thold);
9584 if (err)
9585 goto out_free;
9586
9587 i++;
9588 }
9589
9590 /* there was no other matchset, so the RSSI one is alone */
9591 if (i == 0 && n_match_sets)
9592 request->match_sets[0].rssi_thold = default_match_rssi;
9593
9594 request->min_rssi_thold = INT_MAX;
9595 for (i = 0; i < n_match_sets; i++)
9596 request->min_rssi_thold =
9597 min(request->match_sets[i].rssi_thold,
9598 request->min_rssi_thold);
9599 } else {
9600 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9601 }
9602
9603 if (ie_len) {
9604 request->ie_len = ie_len;
9605 memcpy((void *)request->ie,
9606 nla_data(attrs[NL80211_ATTR_IE]),
9607 request->ie_len);
9608 }
9609
9610 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9611 if (err)
9612 goto out_free;
9613
9614 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9615 request->delay =
9616 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9617
9618 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9619 request->relative_rssi = nla_get_s8(
9620 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9621 request->relative_rssi_set = true;
9622 }
9623
9624 if (request->relative_rssi_set &&
9625 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9626 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9627
9628 rssi_adjust = nla_data(
9629 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9630 request->rssi_adjust.band = rssi_adjust->band;
9631 request->rssi_adjust.delta = rssi_adjust->delta;
9632 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9633 err = -EINVAL;
9634 goto out_free;
9635 }
9636 }
9637
9638 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9639 if (err)
9640 goto out_free;
9641
9642 request->scan_start = jiffies;
9643
9644 return request;
9645
9646 out_free:
9647 kfree(request);
9648 return ERR_PTR(err);
9649 }
9650
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)9651 static int nl80211_start_sched_scan(struct sk_buff *skb,
9652 struct genl_info *info)
9653 {
9654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9655 struct net_device *dev = info->user_ptr[1];
9656 struct wireless_dev *wdev = dev->ieee80211_ptr;
9657 struct cfg80211_sched_scan_request *sched_scan_req;
9658 bool want_multi;
9659 int err;
9660
9661 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9662 return -EOPNOTSUPP;
9663
9664 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9665 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9666 if (err)
9667 return err;
9668
9669 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9670 info->attrs,
9671 rdev->wiphy.max_match_sets);
9672
9673 err = PTR_ERR_OR_ZERO(sched_scan_req);
9674 if (err)
9675 goto out_err;
9676
9677 /* leave request id zero for legacy request
9678 * or if driver does not support multi-scheduled scan
9679 */
9680 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9681 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9682
9683 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9684 if (err)
9685 goto out_free;
9686
9687 sched_scan_req->dev = dev;
9688 sched_scan_req->wiphy = &rdev->wiphy;
9689
9690 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9691 sched_scan_req->owner_nlportid = info->snd_portid;
9692
9693 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9694
9695 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9696 return 0;
9697
9698 out_free:
9699 kfree(sched_scan_req);
9700 out_err:
9701 return err;
9702 }
9703
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)9704 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9705 struct genl_info *info)
9706 {
9707 struct cfg80211_sched_scan_request *req;
9708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709 u64 cookie;
9710
9711 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9712 return -EOPNOTSUPP;
9713
9714 if (info->attrs[NL80211_ATTR_COOKIE]) {
9715 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9716 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9717 }
9718
9719 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9720 struct cfg80211_sched_scan_request,
9721 list);
9722 if (!req || req->reqid ||
9723 (req->owner_nlportid &&
9724 req->owner_nlportid != info->snd_portid))
9725 return -ENOENT;
9726
9727 return cfg80211_stop_sched_scan_req(rdev, req, false);
9728 }
9729
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)9730 static int nl80211_start_radar_detection(struct sk_buff *skb,
9731 struct genl_info *info)
9732 {
9733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9734 struct net_device *dev = info->user_ptr[1];
9735 struct wireless_dev *wdev = dev->ieee80211_ptr;
9736 struct wiphy *wiphy = wdev->wiphy;
9737 struct cfg80211_chan_def chandef;
9738 enum nl80211_dfs_regions dfs_region;
9739 unsigned int cac_time_ms;
9740 int err = -EINVAL;
9741
9742 flush_delayed_work(&rdev->dfs_update_channels_wk);
9743
9744 wiphy_lock(wiphy);
9745
9746 dfs_region = reg_get_dfs_region(wiphy);
9747 if (dfs_region == NL80211_DFS_UNSET)
9748 goto unlock;
9749
9750 err = nl80211_parse_chandef(rdev, info, &chandef);
9751 if (err)
9752 goto unlock;
9753
9754 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9755 if (err < 0)
9756 goto unlock;
9757
9758 if (err == 0) {
9759 err = -EINVAL;
9760 goto unlock;
9761 }
9762
9763 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9764 err = -EINVAL;
9765 goto unlock;
9766 }
9767
9768 if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9769 err = cfg80211_start_background_radar_detection(rdev, wdev,
9770 &chandef);
9771 goto unlock;
9772 }
9773
9774 if (netif_carrier_ok(dev)) {
9775 err = -EBUSY;
9776 goto unlock;
9777 }
9778
9779 if (wdev->cac_started) {
9780 err = -EBUSY;
9781 goto unlock;
9782 }
9783
9784 /* CAC start is offloaded to HW and can't be started manually */
9785 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9786 err = -EOPNOTSUPP;
9787 goto unlock;
9788 }
9789
9790 if (!rdev->ops->start_radar_detection) {
9791 err = -EOPNOTSUPP;
9792 goto unlock;
9793 }
9794
9795 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9796 if (WARN_ON(!cac_time_ms))
9797 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9798
9799 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9800 if (!err) {
9801 wdev->links[0].ap.chandef = chandef;
9802 wdev->cac_started = true;
9803 wdev->cac_start_time = jiffies;
9804 wdev->cac_time_ms = cac_time_ms;
9805 }
9806 unlock:
9807 wiphy_unlock(wiphy);
9808
9809 return err;
9810 }
9811
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)9812 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9813 struct genl_info *info)
9814 {
9815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9816 struct net_device *dev = info->user_ptr[1];
9817 struct wireless_dev *wdev = dev->ieee80211_ptr;
9818 struct wiphy *wiphy = wdev->wiphy;
9819 struct cfg80211_chan_def chandef;
9820 enum nl80211_dfs_regions dfs_region;
9821 int err;
9822
9823 dfs_region = reg_get_dfs_region(wiphy);
9824 if (dfs_region == NL80211_DFS_UNSET) {
9825 GENL_SET_ERR_MSG(info,
9826 "DFS Region is not set. Unexpected Radar indication");
9827 return -EINVAL;
9828 }
9829
9830 err = nl80211_parse_chandef(rdev, info, &chandef);
9831 if (err) {
9832 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9833 return err;
9834 }
9835
9836 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9837 if (err < 0) {
9838 GENL_SET_ERR_MSG(info, "chandef is invalid");
9839 return err;
9840 }
9841
9842 if (err == 0) {
9843 GENL_SET_ERR_MSG(info,
9844 "Unexpected Radar indication for chandef/iftype");
9845 return -EINVAL;
9846 }
9847
9848 /* Do not process this notification if radar is already detected
9849 * by kernel on this channel, and return success.
9850 */
9851 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9852 return 0;
9853
9854 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9855
9856 cfg80211_sched_dfs_chan_update(rdev);
9857
9858 rdev->radar_chandef = chandef;
9859
9860 /* Propagate this notification to other radios as well */
9861 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9862
9863 return 0;
9864 }
9865
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)9866 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9867 {
9868 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9869 unsigned int link_id = nl80211_link_id(info->attrs);
9870 struct net_device *dev = info->user_ptr[1];
9871 struct wireless_dev *wdev = dev->ieee80211_ptr;
9872 struct cfg80211_csa_settings params;
9873 struct nlattr **csa_attrs = NULL;
9874 int err;
9875 bool need_new_beacon = false;
9876 bool need_handle_dfs_flag = true;
9877 int len, i;
9878 u32 cs_count;
9879
9880 if (!rdev->ops->channel_switch ||
9881 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9882 return -EOPNOTSUPP;
9883
9884 switch (dev->ieee80211_ptr->iftype) {
9885 case NL80211_IFTYPE_AP:
9886 case NL80211_IFTYPE_P2P_GO:
9887 need_new_beacon = true;
9888 /* For all modes except AP the handle_dfs flag needs to be
9889 * supplied to tell the kernel that userspace will handle radar
9890 * events when they happen. Otherwise a switch to a channel
9891 * requiring DFS will be rejected.
9892 */
9893 need_handle_dfs_flag = false;
9894
9895 /* useless if AP is not running */
9896 if (!wdev->links[link_id].ap.beacon_interval)
9897 return -ENOTCONN;
9898 break;
9899 case NL80211_IFTYPE_ADHOC:
9900 if (!wdev->u.ibss.ssid_len)
9901 return -ENOTCONN;
9902 break;
9903 case NL80211_IFTYPE_MESH_POINT:
9904 if (!wdev->u.mesh.id_len)
9905 return -ENOTCONN;
9906 break;
9907 default:
9908 return -EOPNOTSUPP;
9909 }
9910
9911 memset(¶ms, 0, sizeof(params));
9912 params.beacon_csa.ftm_responder = -1;
9913
9914 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9915 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9916 return -EINVAL;
9917
9918 /* only important for AP, IBSS and mesh create IEs internally */
9919 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9920 return -EINVAL;
9921
9922 /* Even though the attribute is u32, the specification says
9923 * u8, so let's make sure we don't overflow.
9924 */
9925 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9926 if (cs_count > 255)
9927 return -EINVAL;
9928
9929 params.count = cs_count;
9930
9931 if (!need_new_beacon)
9932 goto skip_beacons;
9933
9934 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
9935 if (err)
9936 goto free;
9937
9938 csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9939 GFP_KERNEL);
9940 if (!csa_attrs) {
9941 err = -ENOMEM;
9942 goto free;
9943 }
9944
9945 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9946 info->attrs[NL80211_ATTR_CSA_IES],
9947 nl80211_policy, info->extack);
9948 if (err)
9949 goto free;
9950
9951 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
9952 if (err)
9953 goto free;
9954
9955 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9956 err = -EINVAL;
9957 goto free;
9958 }
9959
9960 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9961 if (!len || (len % sizeof(u16))) {
9962 err = -EINVAL;
9963 goto free;
9964 }
9965
9966 params.n_counter_offsets_beacon = len / sizeof(u16);
9967 if (rdev->wiphy.max_num_csa_counters &&
9968 (params.n_counter_offsets_beacon >
9969 rdev->wiphy.max_num_csa_counters)) {
9970 err = -EINVAL;
9971 goto free;
9972 }
9973
9974 params.counter_offsets_beacon =
9975 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9976
9977 /* sanity checks - counters should fit and be the same */
9978 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9979 u16 offset = params.counter_offsets_beacon[i];
9980
9981 if (offset >= params.beacon_csa.tail_len) {
9982 err = -EINVAL;
9983 goto free;
9984 }
9985
9986 if (params.beacon_csa.tail[offset] != params.count) {
9987 err = -EINVAL;
9988 goto free;
9989 }
9990 }
9991
9992 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9993 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9994 if (!len || (len % sizeof(u16))) {
9995 err = -EINVAL;
9996 goto free;
9997 }
9998
9999 params.n_counter_offsets_presp = len / sizeof(u16);
10000 if (rdev->wiphy.max_num_csa_counters &&
10001 (params.n_counter_offsets_presp >
10002 rdev->wiphy.max_num_csa_counters)) {
10003 err = -EINVAL;
10004 goto free;
10005 }
10006
10007 params.counter_offsets_presp =
10008 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10009
10010 /* sanity checks - counters should fit and be the same */
10011 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10012 u16 offset = params.counter_offsets_presp[i];
10013
10014 if (offset >= params.beacon_csa.probe_resp_len) {
10015 err = -EINVAL;
10016 goto free;
10017 }
10018
10019 if (params.beacon_csa.probe_resp[offset] !=
10020 params.count) {
10021 err = -EINVAL;
10022 goto free;
10023 }
10024 }
10025 }
10026
10027 skip_beacons:
10028 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
10029 if (err)
10030 goto free;
10031
10032 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
10033 wdev->iftype)) {
10034 err = -EINVAL;
10035 goto free;
10036 }
10037
10038 err = cfg80211_chandef_dfs_required(wdev->wiphy,
10039 ¶ms.chandef,
10040 wdev->iftype);
10041 if (err < 0)
10042 goto free;
10043
10044 if (err > 0) {
10045 params.radar_required = true;
10046 if (need_handle_dfs_flag &&
10047 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10048 err = -EINVAL;
10049 goto free;
10050 }
10051 }
10052
10053 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10054 params.block_tx = true;
10055
10056 wdev_lock(wdev);
10057 err = rdev_channel_switch(rdev, dev, ¶ms);
10058 wdev_unlock(wdev);
10059
10060 free:
10061 kfree(params.beacon_after.mbssid_ies);
10062 kfree(params.beacon_csa.mbssid_ies);
10063 kfree(csa_attrs);
10064 return err;
10065 }
10066
nl80211_send_bss(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,struct cfg80211_internal_bss * intbss)10067 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10068 u32 seq, int flags,
10069 struct cfg80211_registered_device *rdev,
10070 struct wireless_dev *wdev,
10071 struct cfg80211_internal_bss *intbss)
10072 {
10073 struct cfg80211_bss *res = &intbss->pub;
10074 const struct cfg80211_bss_ies *ies;
10075 unsigned int link_id;
10076 void *hdr;
10077 struct nlattr *bss;
10078
10079 ASSERT_WDEV_LOCK(wdev);
10080
10081 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10082 NL80211_CMD_NEW_SCAN_RESULTS);
10083 if (!hdr)
10084 return -1;
10085
10086 genl_dump_check_consistent(cb, hdr);
10087
10088 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10089 goto nla_put_failure;
10090 if (wdev->netdev &&
10091 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10092 goto nla_put_failure;
10093 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10094 NL80211_ATTR_PAD))
10095 goto nla_put_failure;
10096
10097 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10098 if (!bss)
10099 goto nla_put_failure;
10100 if ((!is_zero_ether_addr(res->bssid) &&
10101 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10102 goto nla_put_failure;
10103
10104 rcu_read_lock();
10105 /* indicate whether we have probe response data or not */
10106 if (rcu_access_pointer(res->proberesp_ies) &&
10107 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10108 goto fail_unlock_rcu;
10109
10110 /* this pointer prefers to be pointed to probe response data
10111 * but is always valid
10112 */
10113 ies = rcu_dereference(res->ies);
10114 if (ies) {
10115 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10116 NL80211_BSS_PAD))
10117 goto fail_unlock_rcu;
10118 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10119 ies->len, ies->data))
10120 goto fail_unlock_rcu;
10121 }
10122
10123 /* and this pointer is always (unless driver didn't know) beacon data */
10124 ies = rcu_dereference(res->beacon_ies);
10125 if (ies && ies->from_beacon) {
10126 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10127 NL80211_BSS_PAD))
10128 goto fail_unlock_rcu;
10129 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10130 ies->len, ies->data))
10131 goto fail_unlock_rcu;
10132 }
10133 rcu_read_unlock();
10134
10135 if (res->beacon_interval &&
10136 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10137 goto nla_put_failure;
10138 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10139 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10140 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10141 res->channel->freq_offset) ||
10142 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10143 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10144 jiffies_to_msecs(jiffies - intbss->ts)))
10145 goto nla_put_failure;
10146
10147 if (intbss->parent_tsf &&
10148 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10149 intbss->parent_tsf, NL80211_BSS_PAD) ||
10150 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10151 intbss->parent_bssid)))
10152 goto nla_put_failure;
10153
10154 if (intbss->ts_boottime &&
10155 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10156 intbss->ts_boottime, NL80211_BSS_PAD))
10157 goto nla_put_failure;
10158
10159 if (!nl80211_put_signal(msg, intbss->pub.chains,
10160 intbss->pub.chain_signal,
10161 NL80211_BSS_CHAIN_SIGNAL))
10162 goto nla_put_failure;
10163
10164 switch (rdev->wiphy.signal_type) {
10165 case CFG80211_SIGNAL_TYPE_MBM:
10166 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10167 goto nla_put_failure;
10168 break;
10169 case CFG80211_SIGNAL_TYPE_UNSPEC:
10170 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10171 goto nla_put_failure;
10172 break;
10173 default:
10174 break;
10175 }
10176
10177 switch (wdev->iftype) {
10178 case NL80211_IFTYPE_P2P_CLIENT:
10179 case NL80211_IFTYPE_STATION:
10180 for_each_valid_link(wdev, link_id) {
10181 if (intbss == wdev->links[link_id].client.current_bss &&
10182 (nla_put_u32(msg, NL80211_BSS_STATUS,
10183 NL80211_BSS_STATUS_ASSOCIATED) ||
10184 (wdev->valid_links &&
10185 (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10186 link_id) ||
10187 nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10188 wdev->u.client.connected_addr)))))
10189 goto nla_put_failure;
10190 }
10191 break;
10192 case NL80211_IFTYPE_ADHOC:
10193 if (intbss == wdev->u.ibss.current_bss &&
10194 nla_put_u32(msg, NL80211_BSS_STATUS,
10195 NL80211_BSS_STATUS_IBSS_JOINED))
10196 goto nla_put_failure;
10197 break;
10198 default:
10199 break;
10200 }
10201
10202 nla_nest_end(msg, bss);
10203
10204 genlmsg_end(msg, hdr);
10205 return 0;
10206
10207 fail_unlock_rcu:
10208 rcu_read_unlock();
10209 nla_put_failure:
10210 genlmsg_cancel(msg, hdr);
10211 return -EMSGSIZE;
10212 }
10213
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)10214 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10215 {
10216 struct cfg80211_registered_device *rdev;
10217 struct cfg80211_internal_bss *scan;
10218 struct wireless_dev *wdev;
10219 int start = cb->args[2], idx = 0;
10220 int err;
10221
10222 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10223 if (err)
10224 return err;
10225 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10226 __acquire(&rdev->wiphy.mtx);
10227
10228 wdev_lock(wdev);
10229 spin_lock_bh(&rdev->bss_lock);
10230
10231 /*
10232 * dump_scan will be called multiple times to break up the scan results
10233 * into multiple messages. It is unlikely that any more bss-es will be
10234 * expired after the first call, so only call only call this on the
10235 * first dump_scan invocation.
10236 */
10237 if (start == 0)
10238 cfg80211_bss_expire(rdev);
10239
10240 cb->seq = rdev->bss_generation;
10241
10242 list_for_each_entry(scan, &rdev->bss_list, list) {
10243 if (++idx <= start)
10244 continue;
10245 if (nl80211_send_bss(skb, cb,
10246 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10247 rdev, wdev, scan) < 0) {
10248 idx--;
10249 break;
10250 }
10251 }
10252
10253 spin_unlock_bh(&rdev->bss_lock);
10254 wdev_unlock(wdev);
10255
10256 cb->args[2] = idx;
10257 wiphy_unlock(&rdev->wiphy);
10258
10259 return skb->len;
10260 }
10261
nl80211_send_survey(struct sk_buff * msg,u32 portid,u32 seq,int flags,struct net_device * dev,bool allow_radio_stats,struct survey_info * survey)10262 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10263 int flags, struct net_device *dev,
10264 bool allow_radio_stats,
10265 struct survey_info *survey)
10266 {
10267 void *hdr;
10268 struct nlattr *infoattr;
10269
10270 /* skip radio stats if userspace didn't request them */
10271 if (!survey->channel && !allow_radio_stats)
10272 return 0;
10273
10274 hdr = nl80211hdr_put(msg, portid, seq, flags,
10275 NL80211_CMD_NEW_SURVEY_RESULTS);
10276 if (!hdr)
10277 return -ENOMEM;
10278
10279 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10280 goto nla_put_failure;
10281
10282 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10283 if (!infoattr)
10284 goto nla_put_failure;
10285
10286 if (survey->channel &&
10287 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10288 survey->channel->center_freq))
10289 goto nla_put_failure;
10290
10291 if (survey->channel && survey->channel->freq_offset &&
10292 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10293 survey->channel->freq_offset))
10294 goto nla_put_failure;
10295
10296 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10297 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10298 goto nla_put_failure;
10299 if ((survey->filled & SURVEY_INFO_IN_USE) &&
10300 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10301 goto nla_put_failure;
10302 if ((survey->filled & SURVEY_INFO_TIME) &&
10303 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10304 survey->time, NL80211_SURVEY_INFO_PAD))
10305 goto nla_put_failure;
10306 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10307 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10308 survey->time_busy, NL80211_SURVEY_INFO_PAD))
10309 goto nla_put_failure;
10310 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10311 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10312 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10313 goto nla_put_failure;
10314 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10315 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10316 survey->time_rx, NL80211_SURVEY_INFO_PAD))
10317 goto nla_put_failure;
10318 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10319 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10320 survey->time_tx, NL80211_SURVEY_INFO_PAD))
10321 goto nla_put_failure;
10322 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10323 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10324 survey->time_scan, NL80211_SURVEY_INFO_PAD))
10325 goto nla_put_failure;
10326 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10327 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10328 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10329 goto nla_put_failure;
10330
10331 nla_nest_end(msg, infoattr);
10332
10333 genlmsg_end(msg, hdr);
10334 return 0;
10335
10336 nla_put_failure:
10337 genlmsg_cancel(msg, hdr);
10338 return -EMSGSIZE;
10339 }
10340
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)10341 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10342 {
10343 struct nlattr **attrbuf;
10344 struct survey_info survey;
10345 struct cfg80211_registered_device *rdev;
10346 struct wireless_dev *wdev;
10347 int survey_idx = cb->args[2];
10348 int res;
10349 bool radio_stats;
10350
10351 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10352 if (!attrbuf)
10353 return -ENOMEM;
10354
10355 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10356 if (res) {
10357 kfree(attrbuf);
10358 return res;
10359 }
10360 /* nl80211_prepare_wdev_dump acquired it in the successful case */
10361 __acquire(&rdev->wiphy.mtx);
10362
10363 /* prepare_wdev_dump parsed the attributes */
10364 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10365
10366 if (!wdev->netdev) {
10367 res = -EINVAL;
10368 goto out_err;
10369 }
10370
10371 if (!rdev->ops->dump_survey) {
10372 res = -EOPNOTSUPP;
10373 goto out_err;
10374 }
10375
10376 while (1) {
10377 wdev_lock(wdev);
10378 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10379 wdev_unlock(wdev);
10380 if (res == -ENOENT)
10381 break;
10382 if (res)
10383 goto out_err;
10384
10385 /* don't send disabled channels, but do send non-channel data */
10386 if (survey.channel &&
10387 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10388 survey_idx++;
10389 continue;
10390 }
10391
10392 if (nl80211_send_survey(skb,
10393 NETLINK_CB(cb->skb).portid,
10394 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10395 wdev->netdev, radio_stats, &survey) < 0)
10396 goto out;
10397 survey_idx++;
10398 }
10399
10400 out:
10401 cb->args[2] = survey_idx;
10402 res = skb->len;
10403 out_err:
10404 kfree(attrbuf);
10405 wiphy_unlock(&rdev->wiphy);
10406 return res;
10407 }
10408
nl80211_valid_wpa_versions(u32 wpa_versions)10409 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10410 {
10411 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10412 NL80211_WPA_VERSION_2 |
10413 NL80211_WPA_VERSION_3));
10414 }
10415
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)10416 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10417 {
10418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10419 struct net_device *dev = info->user_ptr[1];
10420 struct ieee80211_channel *chan;
10421 const u8 *bssid, *ssid;
10422 int err, ssid_len;
10423 enum nl80211_auth_type auth_type;
10424 struct key_parse key;
10425 bool local_state_change;
10426 struct cfg80211_auth_request req = {};
10427 u32 freq;
10428
10429 if (!info->attrs[NL80211_ATTR_MAC])
10430 return -EINVAL;
10431
10432 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10433 return -EINVAL;
10434
10435 if (!info->attrs[NL80211_ATTR_SSID])
10436 return -EINVAL;
10437
10438 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10439 return -EINVAL;
10440
10441 err = nl80211_parse_key(info, &key);
10442 if (err)
10443 return err;
10444
10445 if (key.idx >= 0) {
10446 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10447 return -EINVAL;
10448 if (!key.p.key || !key.p.key_len)
10449 return -EINVAL;
10450 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10451 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10452 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10453 key.p.key_len != WLAN_KEY_LEN_WEP104))
10454 return -EINVAL;
10455 if (key.idx > 3)
10456 return -EINVAL;
10457 } else {
10458 key.p.key_len = 0;
10459 key.p.key = NULL;
10460 }
10461
10462 if (key.idx >= 0) {
10463 int i;
10464 bool ok = false;
10465
10466 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10467 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10468 ok = true;
10469 break;
10470 }
10471 }
10472 if (!ok)
10473 return -EINVAL;
10474 }
10475
10476 if (!rdev->ops->auth)
10477 return -EOPNOTSUPP;
10478
10479 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10480 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10481 return -EOPNOTSUPP;
10482
10483 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10484 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10485 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10486 freq +=
10487 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10488
10489 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10490 if (!chan)
10491 return -EINVAL;
10492
10493 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10494 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10495
10496 if (info->attrs[NL80211_ATTR_IE]) {
10497 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10498 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10499 }
10500
10501 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10502 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10503 return -EINVAL;
10504
10505 if ((auth_type == NL80211_AUTHTYPE_SAE ||
10506 auth_type == NL80211_AUTHTYPE_FILS_SK ||
10507 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10508 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10509 !info->attrs[NL80211_ATTR_AUTH_DATA])
10510 return -EINVAL;
10511
10512 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10513 if (auth_type != NL80211_AUTHTYPE_SAE &&
10514 auth_type != NL80211_AUTHTYPE_FILS_SK &&
10515 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10516 auth_type != NL80211_AUTHTYPE_FILS_PK)
10517 return -EINVAL;
10518 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10519 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10520 }
10521
10522 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10523
10524 /*
10525 * Since we no longer track auth state, ignore
10526 * requests to only change local state.
10527 */
10528 if (local_state_change)
10529 return 0;
10530
10531 req.auth_type = auth_type;
10532 req.key = key.p.key;
10533 req.key_len = key.p.key_len;
10534 req.key_idx = key.idx;
10535 req.link_id = nl80211_link_id_or_invalid(info->attrs);
10536 if (req.link_id >= 0) {
10537 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10538 return -EINVAL;
10539 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10540 return -EINVAL;
10541 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10542 }
10543
10544 req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10545 IEEE80211_BSS_TYPE_ESS,
10546 IEEE80211_PRIVACY_ANY);
10547 if (!req.bss)
10548 return -ENOENT;
10549
10550 wdev_lock(dev->ieee80211_ptr);
10551 err = cfg80211_mlme_auth(rdev, dev, &req);
10552 wdev_unlock(dev->ieee80211_ptr);
10553
10554 cfg80211_put_bss(&rdev->wiphy, req.bss);
10555
10556 return err;
10557 }
10558
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)10559 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10560 struct genl_info *info)
10561 {
10562 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10563 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10564 return -EINVAL;
10565 }
10566
10567 if (!rdev->ops->tx_control_port ||
10568 !wiphy_ext_feature_isset(&rdev->wiphy,
10569 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10570 return -EOPNOTSUPP;
10571
10572 return 0;
10573 }
10574
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)10575 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10576 struct genl_info *info,
10577 struct cfg80211_crypto_settings *settings,
10578 int cipher_limit)
10579 {
10580 memset(settings, 0, sizeof(*settings));
10581
10582 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10583
10584 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10585 u16 proto;
10586
10587 proto = nla_get_u16(
10588 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10589 settings->control_port_ethertype = cpu_to_be16(proto);
10590 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10591 proto != ETH_P_PAE)
10592 return -EINVAL;
10593 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10594 settings->control_port_no_encrypt = true;
10595 } else
10596 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10597
10598 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10599 int r = validate_pae_over_nl80211(rdev, info);
10600
10601 if (r < 0)
10602 return r;
10603
10604 settings->control_port_over_nl80211 = true;
10605
10606 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10607 settings->control_port_no_preauth = true;
10608 }
10609
10610 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10611 void *data;
10612 int len, i;
10613
10614 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10615 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10616 settings->n_ciphers_pairwise = len / sizeof(u32);
10617
10618 if (len % sizeof(u32))
10619 return -EINVAL;
10620
10621 if (settings->n_ciphers_pairwise > cipher_limit)
10622 return -EINVAL;
10623
10624 memcpy(settings->ciphers_pairwise, data, len);
10625
10626 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10627 if (!cfg80211_supported_cipher_suite(
10628 &rdev->wiphy,
10629 settings->ciphers_pairwise[i]))
10630 return -EINVAL;
10631 }
10632
10633 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10634 settings->cipher_group =
10635 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10636 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10637 settings->cipher_group))
10638 return -EINVAL;
10639 }
10640
10641 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10642 settings->wpa_versions =
10643 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10644 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10645 return -EINVAL;
10646 }
10647
10648 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10649 void *data;
10650 int len;
10651
10652 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10653 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10654 settings->n_akm_suites = len / sizeof(u32);
10655
10656 if (len % sizeof(u32))
10657 return -EINVAL;
10658
10659 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10660 return -EINVAL;
10661
10662 memcpy(settings->akm_suites, data, len);
10663 }
10664
10665 if (info->attrs[NL80211_ATTR_PMK]) {
10666 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10667 return -EINVAL;
10668 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10669 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10670 !wiphy_ext_feature_isset(&rdev->wiphy,
10671 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10672 return -EINVAL;
10673 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10674 }
10675
10676 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10677 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10678 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10679 !wiphy_ext_feature_isset(&rdev->wiphy,
10680 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10681 return -EINVAL;
10682 settings->sae_pwd =
10683 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10684 settings->sae_pwd_len =
10685 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10686 }
10687
10688 if (info->attrs[NL80211_ATTR_SAE_PWE])
10689 settings->sae_pwe =
10690 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10691 else
10692 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10693
10694 return 0;
10695 }
10696
nl80211_assoc_bss(struct cfg80211_registered_device * rdev,const u8 * ssid,int ssid_len,struct nlattr ** attrs,const u8 ** bssid_out)10697 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10698 const u8 *ssid, int ssid_len,
10699 struct nlattr **attrs,
10700 const u8 **bssid_out)
10701 {
10702 struct ieee80211_channel *chan;
10703 struct cfg80211_bss *bss;
10704 const u8 *bssid;
10705 u32 freq;
10706
10707 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10708 return ERR_PTR(-EINVAL);
10709
10710 bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10711
10712 freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10713 if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10714 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10715
10716 chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10717 if (!chan)
10718 return ERR_PTR(-EINVAL);
10719
10720 bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10721 ssid, ssid_len,
10722 IEEE80211_BSS_TYPE_ESS,
10723 IEEE80211_PRIVACY_ANY);
10724 if (!bss)
10725 return ERR_PTR(-ENOENT);
10726
10727 *bssid_out = bssid;
10728 return bss;
10729 }
10730
nl80211_associate(struct sk_buff * skb,struct genl_info * info)10731 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10732 {
10733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10734 struct net_device *dev = info->user_ptr[1];
10735 struct cfg80211_assoc_request req = {};
10736 struct nlattr **attrs = NULL;
10737 const u8 *bssid, *ssid;
10738 unsigned int link_id;
10739 int err, ssid_len;
10740
10741 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10742 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10743 return -EPERM;
10744
10745 if (!info->attrs[NL80211_ATTR_SSID])
10746 return -EINVAL;
10747
10748 if (!rdev->ops->assoc)
10749 return -EOPNOTSUPP;
10750
10751 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10752 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10753 return -EOPNOTSUPP;
10754
10755 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10756 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10757
10758 if (info->attrs[NL80211_ATTR_IE]) {
10759 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10760 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10761
10762 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10763 req.ie, req.ie_len)) {
10764 GENL_SET_ERR_MSG(info,
10765 "non-inheritance makes no sense");
10766 return -EINVAL;
10767 }
10768 }
10769
10770 if (info->attrs[NL80211_ATTR_USE_MFP]) {
10771 enum nl80211_mfp mfp =
10772 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10773 if (mfp == NL80211_MFP_REQUIRED)
10774 req.use_mfp = true;
10775 else if (mfp != NL80211_MFP_NO)
10776 return -EINVAL;
10777 }
10778
10779 if (info->attrs[NL80211_ATTR_PREV_BSSID])
10780 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10781
10782 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10783 req.flags |= ASSOC_REQ_DISABLE_HT;
10784
10785 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10786 memcpy(&req.ht_capa_mask,
10787 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10788 sizeof(req.ht_capa_mask));
10789
10790 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10791 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10792 return -EINVAL;
10793 memcpy(&req.ht_capa,
10794 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10795 sizeof(req.ht_capa));
10796 }
10797
10798 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10799 req.flags |= ASSOC_REQ_DISABLE_VHT;
10800
10801 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10802 req.flags |= ASSOC_REQ_DISABLE_HE;
10803
10804 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10805 req.flags |= ASSOC_REQ_DISABLE_EHT;
10806
10807 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10808 memcpy(&req.vht_capa_mask,
10809 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10810 sizeof(req.vht_capa_mask));
10811
10812 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10813 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10814 return -EINVAL;
10815 memcpy(&req.vht_capa,
10816 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10817 sizeof(req.vht_capa));
10818 }
10819
10820 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10821 if (!((rdev->wiphy.features &
10822 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10823 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10824 !wiphy_ext_feature_isset(&rdev->wiphy,
10825 NL80211_EXT_FEATURE_RRM))
10826 return -EINVAL;
10827 req.flags |= ASSOC_REQ_USE_RRM;
10828 }
10829
10830 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10831 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10832 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10833 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10834 return -EINVAL;
10835 req.fils_nonces =
10836 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10837 }
10838
10839 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10840 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10841 return -EINVAL;
10842 memcpy(&req.s1g_capa_mask,
10843 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10844 sizeof(req.s1g_capa_mask));
10845 }
10846
10847 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10848 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10849 return -EINVAL;
10850 memcpy(&req.s1g_capa,
10851 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10852 sizeof(req.s1g_capa));
10853 }
10854
10855 req.link_id = nl80211_link_id_or_invalid(info->attrs);
10856
10857 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10858 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10859 struct nlattr *link;
10860 int rem = 0;
10861
10862 if (req.link_id < 0)
10863 return -EINVAL;
10864
10865 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10866 return -EINVAL;
10867
10868 if (info->attrs[NL80211_ATTR_MAC] ||
10869 info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10870 !info->attrs[NL80211_ATTR_MLD_ADDR])
10871 return -EINVAL;
10872
10873 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10874
10875 attrs = kzalloc(attrsize, GFP_KERNEL);
10876 if (!attrs)
10877 return -ENOMEM;
10878
10879 nla_for_each_nested(link,
10880 info->attrs[NL80211_ATTR_MLO_LINKS],
10881 rem) {
10882 memset(attrs, 0, attrsize);
10883
10884 nla_parse_nested(attrs, NL80211_ATTR_MAX,
10885 link, NULL, NULL);
10886
10887 if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10888 err = -EINVAL;
10889 goto free;
10890 }
10891
10892 link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10893 /* cannot use the same link ID again */
10894 if (req.links[link_id].bss) {
10895 err = -EINVAL;
10896 goto free;
10897 }
10898 req.links[link_id].bss =
10899 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
10900 &bssid);
10901 if (IS_ERR(req.links[link_id].bss)) {
10902 err = PTR_ERR(req.links[link_id].bss);
10903 req.links[link_id].bss = NULL;
10904 goto free;
10905 }
10906
10907 if (attrs[NL80211_ATTR_IE]) {
10908 req.links[link_id].elems =
10909 nla_data(attrs[NL80211_ATTR_IE]);
10910 req.links[link_id].elems_len =
10911 nla_len(attrs[NL80211_ATTR_IE]);
10912
10913 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
10914 req.links[link_id].elems,
10915 req.links[link_id].elems_len)) {
10916 GENL_SET_ERR_MSG(info,
10917 "cannot deal with fragmentation");
10918 err = -EINVAL;
10919 goto free;
10920 }
10921
10922 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10923 req.links[link_id].elems,
10924 req.links[link_id].elems_len)) {
10925 GENL_SET_ERR_MSG(info,
10926 "cannot deal with non-inheritance");
10927 err = -EINVAL;
10928 goto free;
10929 }
10930 }
10931 }
10932
10933 if (!req.links[req.link_id].bss) {
10934 err = -EINVAL;
10935 goto free;
10936 }
10937
10938 if (req.links[req.link_id].elems_len) {
10939 GENL_SET_ERR_MSG(info,
10940 "cannot have per-link elems on assoc link");
10941 err = -EINVAL;
10942 goto free;
10943 }
10944
10945 kfree(attrs);
10946 attrs = NULL;
10947 } else {
10948 if (req.link_id >= 0)
10949 return -EINVAL;
10950
10951 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
10952 &bssid);
10953 if (IS_ERR(req.bss))
10954 return PTR_ERR(req.bss);
10955 }
10956
10957 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10958 if (!err) {
10959 wdev_lock(dev->ieee80211_ptr);
10960
10961 err = cfg80211_mlme_assoc(rdev, dev, &req);
10962
10963 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10964 dev->ieee80211_ptr->conn_owner_nlportid =
10965 info->snd_portid;
10966 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10967 bssid, ETH_ALEN);
10968 }
10969
10970 wdev_unlock(dev->ieee80211_ptr);
10971 }
10972
10973 free:
10974 for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
10975 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
10976 cfg80211_put_bss(&rdev->wiphy, req.bss);
10977 kfree(attrs);
10978
10979 return err;
10980 }
10981
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)10982 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10983 {
10984 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10985 struct net_device *dev = info->user_ptr[1];
10986 const u8 *ie = NULL, *bssid;
10987 int ie_len = 0, err;
10988 u16 reason_code;
10989 bool local_state_change;
10990
10991 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10992 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10993 return -EPERM;
10994
10995 if (!info->attrs[NL80211_ATTR_MAC])
10996 return -EINVAL;
10997
10998 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10999 return -EINVAL;
11000
11001 if (!rdev->ops->deauth)
11002 return -EOPNOTSUPP;
11003
11004 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11005 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11006 return -EOPNOTSUPP;
11007
11008 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11009
11010 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11011 if (reason_code == 0) {
11012 /* Reason Code 0 is reserved */
11013 return -EINVAL;
11014 }
11015
11016 if (info->attrs[NL80211_ATTR_IE]) {
11017 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11018 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11019 }
11020
11021 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11022
11023 wdev_lock(dev->ieee80211_ptr);
11024 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11025 local_state_change);
11026 wdev_unlock(dev->ieee80211_ptr);
11027 return err;
11028 }
11029
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)11030 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11031 {
11032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11033 struct net_device *dev = info->user_ptr[1];
11034 const u8 *ie = NULL, *bssid;
11035 int ie_len = 0, err;
11036 u16 reason_code;
11037 bool local_state_change;
11038
11039 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11040 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11041 return -EPERM;
11042
11043 if (!info->attrs[NL80211_ATTR_MAC])
11044 return -EINVAL;
11045
11046 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11047 return -EINVAL;
11048
11049 if (!rdev->ops->disassoc)
11050 return -EOPNOTSUPP;
11051
11052 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11053 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11054 return -EOPNOTSUPP;
11055
11056 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11057
11058 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11059 if (reason_code == 0) {
11060 /* Reason Code 0 is reserved */
11061 return -EINVAL;
11062 }
11063
11064 if (info->attrs[NL80211_ATTR_IE]) {
11065 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11066 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11067 }
11068
11069 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11070
11071 wdev_lock(dev->ieee80211_ptr);
11072 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11073 local_state_change);
11074 wdev_unlock(dev->ieee80211_ptr);
11075 return err;
11076 }
11077
11078 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)11079 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11080 int mcast_rate[NUM_NL80211_BANDS],
11081 int rateval)
11082 {
11083 struct wiphy *wiphy = &rdev->wiphy;
11084 bool found = false;
11085 int band, i;
11086
11087 for (band = 0; band < NUM_NL80211_BANDS; band++) {
11088 struct ieee80211_supported_band *sband;
11089
11090 sband = wiphy->bands[band];
11091 if (!sband)
11092 continue;
11093
11094 for (i = 0; i < sband->n_bitrates; i++) {
11095 if (sband->bitrates[i].bitrate == rateval) {
11096 mcast_rate[band] = i + 1;
11097 found = true;
11098 break;
11099 }
11100 }
11101 }
11102
11103 return found;
11104 }
11105
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)11106 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11107 {
11108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11109 struct net_device *dev = info->user_ptr[1];
11110 struct cfg80211_ibss_params ibss;
11111 struct wiphy *wiphy;
11112 struct cfg80211_cached_keys *connkeys = NULL;
11113 int err;
11114
11115 memset(&ibss, 0, sizeof(ibss));
11116
11117 if (!info->attrs[NL80211_ATTR_SSID] ||
11118 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11119 return -EINVAL;
11120
11121 ibss.beacon_interval = 100;
11122
11123 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11124 ibss.beacon_interval =
11125 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11126
11127 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11128 ibss.beacon_interval);
11129 if (err)
11130 return err;
11131
11132 if (!rdev->ops->join_ibss)
11133 return -EOPNOTSUPP;
11134
11135 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11136 return -EOPNOTSUPP;
11137
11138 wiphy = &rdev->wiphy;
11139
11140 if (info->attrs[NL80211_ATTR_MAC]) {
11141 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11142
11143 if (!is_valid_ether_addr(ibss.bssid))
11144 return -EINVAL;
11145 }
11146 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11147 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11148
11149 if (info->attrs[NL80211_ATTR_IE]) {
11150 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11151 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11152 }
11153
11154 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11155 if (err)
11156 return err;
11157
11158 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11159 NL80211_IFTYPE_ADHOC))
11160 return -EINVAL;
11161
11162 switch (ibss.chandef.width) {
11163 case NL80211_CHAN_WIDTH_5:
11164 case NL80211_CHAN_WIDTH_10:
11165 case NL80211_CHAN_WIDTH_20_NOHT:
11166 break;
11167 case NL80211_CHAN_WIDTH_20:
11168 case NL80211_CHAN_WIDTH_40:
11169 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11170 return -EINVAL;
11171 break;
11172 case NL80211_CHAN_WIDTH_80:
11173 case NL80211_CHAN_WIDTH_80P80:
11174 case NL80211_CHAN_WIDTH_160:
11175 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11176 return -EINVAL;
11177 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11178 NL80211_EXT_FEATURE_VHT_IBSS))
11179 return -EINVAL;
11180 break;
11181 case NL80211_CHAN_WIDTH_320:
11182 return -EINVAL;
11183 default:
11184 return -EINVAL;
11185 }
11186
11187 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11188 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11189
11190 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11191 u8 *rates =
11192 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11193 int n_rates =
11194 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11195 struct ieee80211_supported_band *sband =
11196 wiphy->bands[ibss.chandef.chan->band];
11197
11198 err = ieee80211_get_ratemask(sband, rates, n_rates,
11199 &ibss.basic_rates);
11200 if (err)
11201 return err;
11202 }
11203
11204 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11205 memcpy(&ibss.ht_capa_mask,
11206 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11207 sizeof(ibss.ht_capa_mask));
11208
11209 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11210 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11211 return -EINVAL;
11212 memcpy(&ibss.ht_capa,
11213 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11214 sizeof(ibss.ht_capa));
11215 }
11216
11217 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11218 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11219 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11220 return -EINVAL;
11221
11222 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11223 bool no_ht = false;
11224
11225 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11226 if (IS_ERR(connkeys))
11227 return PTR_ERR(connkeys);
11228
11229 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11230 no_ht) {
11231 kfree_sensitive(connkeys);
11232 return -EINVAL;
11233 }
11234 }
11235
11236 ibss.control_port =
11237 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11238
11239 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11240 int r = validate_pae_over_nl80211(rdev, info);
11241
11242 if (r < 0) {
11243 kfree_sensitive(connkeys);
11244 return r;
11245 }
11246
11247 ibss.control_port_over_nl80211 = true;
11248 }
11249
11250 ibss.userspace_handles_dfs =
11251 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11252
11253 wdev_lock(dev->ieee80211_ptr);
11254 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11255 if (err)
11256 kfree_sensitive(connkeys);
11257 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11258 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11259 wdev_unlock(dev->ieee80211_ptr);
11260
11261 return err;
11262 }
11263
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)11264 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11265 {
11266 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11267 struct net_device *dev = info->user_ptr[1];
11268
11269 if (!rdev->ops->leave_ibss)
11270 return -EOPNOTSUPP;
11271
11272 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11273 return -EOPNOTSUPP;
11274
11275 return cfg80211_leave_ibss(rdev, dev, false);
11276 }
11277
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)11278 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11279 {
11280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11281 struct net_device *dev = info->user_ptr[1];
11282 int mcast_rate[NUM_NL80211_BANDS];
11283 u32 nla_rate;
11284
11285 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11288 return -EOPNOTSUPP;
11289
11290 if (!rdev->ops->set_mcast_rate)
11291 return -EOPNOTSUPP;
11292
11293 memset(mcast_rate, 0, sizeof(mcast_rate));
11294
11295 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11296 return -EINVAL;
11297
11298 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11299 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11300 return -EINVAL;
11301
11302 return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11303 }
11304
11305 static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,int approxlen,u32 portid,u32 seq,enum nl80211_commands cmd,enum nl80211_attrs attr,const struct nl80211_vendor_cmd_info * info,gfp_t gfp)11306 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11307 struct wireless_dev *wdev, int approxlen,
11308 u32 portid, u32 seq, enum nl80211_commands cmd,
11309 enum nl80211_attrs attr,
11310 const struct nl80211_vendor_cmd_info *info,
11311 gfp_t gfp)
11312 {
11313 struct sk_buff *skb;
11314 void *hdr;
11315 struct nlattr *data;
11316
11317 skb = nlmsg_new(approxlen + 100, gfp);
11318 if (!skb)
11319 return NULL;
11320
11321 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11322 if (!hdr) {
11323 kfree_skb(skb);
11324 return NULL;
11325 }
11326
11327 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11328 goto nla_put_failure;
11329
11330 if (info) {
11331 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11332 info->vendor_id))
11333 goto nla_put_failure;
11334 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11335 info->subcmd))
11336 goto nla_put_failure;
11337 }
11338
11339 if (wdev) {
11340 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11341 wdev_id(wdev), NL80211_ATTR_PAD))
11342 goto nla_put_failure;
11343 if (wdev->netdev &&
11344 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11345 wdev->netdev->ifindex))
11346 goto nla_put_failure;
11347 }
11348
11349 data = nla_nest_start_noflag(skb, attr);
11350 if (!data)
11351 goto nla_put_failure;
11352
11353 ((void **)skb->cb)[0] = rdev;
11354 ((void **)skb->cb)[1] = hdr;
11355 ((void **)skb->cb)[2] = data;
11356
11357 return skb;
11358
11359 nla_put_failure:
11360 kfree_skb(skb);
11361 return NULL;
11362 }
11363
__cfg80211_alloc_event_skb(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_commands cmd,enum nl80211_attrs attr,unsigned int portid,int vendor_event_idx,int approxlen,gfp_t gfp)11364 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11365 struct wireless_dev *wdev,
11366 enum nl80211_commands cmd,
11367 enum nl80211_attrs attr,
11368 unsigned int portid,
11369 int vendor_event_idx,
11370 int approxlen, gfp_t gfp)
11371 {
11372 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11373 const struct nl80211_vendor_cmd_info *info;
11374
11375 switch (cmd) {
11376 case NL80211_CMD_TESTMODE:
11377 if (WARN_ON(vendor_event_idx != -1))
11378 return NULL;
11379 info = NULL;
11380 break;
11381 case NL80211_CMD_VENDOR:
11382 if (WARN_ON(vendor_event_idx < 0 ||
11383 vendor_event_idx >= wiphy->n_vendor_events))
11384 return NULL;
11385 info = &wiphy->vendor_events[vendor_event_idx];
11386 break;
11387 default:
11388 WARN_ON(1);
11389 return NULL;
11390 }
11391
11392 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11393 cmd, attr, info, gfp);
11394 }
11395 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11396
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)11397 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11398 {
11399 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11400 void *hdr = ((void **)skb->cb)[1];
11401 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11402 struct nlattr *data = ((void **)skb->cb)[2];
11403 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11404
11405 /* clear CB data for netlink core to own from now on */
11406 memset(skb->cb, 0, sizeof(skb->cb));
11407
11408 nla_nest_end(skb, data);
11409 genlmsg_end(skb, hdr);
11410
11411 if (nlhdr->nlmsg_pid) {
11412 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11413 nlhdr->nlmsg_pid);
11414 } else {
11415 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11416 mcgrp = NL80211_MCGRP_VENDOR;
11417
11418 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11419 skb, 0, mcgrp, gfp);
11420 }
11421 }
11422 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11423
11424 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)11425 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11426 {
11427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11428 struct wireless_dev *wdev;
11429 int err;
11430
11431 lockdep_assert_held(&rdev->wiphy.mtx);
11432
11433 wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11434 info->attrs);
11435
11436 if (!rdev->ops->testmode_cmd)
11437 return -EOPNOTSUPP;
11438
11439 if (IS_ERR(wdev)) {
11440 err = PTR_ERR(wdev);
11441 if (err != -EINVAL)
11442 return err;
11443 wdev = NULL;
11444 } else if (wdev->wiphy != &rdev->wiphy) {
11445 return -EINVAL;
11446 }
11447
11448 if (!info->attrs[NL80211_ATTR_TESTDATA])
11449 return -EINVAL;
11450
11451 rdev->cur_cmd_info = info;
11452 err = rdev_testmode_cmd(rdev, wdev,
11453 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11454 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11455 rdev->cur_cmd_info = NULL;
11456
11457 return err;
11458 }
11459
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)11460 static int nl80211_testmode_dump(struct sk_buff *skb,
11461 struct netlink_callback *cb)
11462 {
11463 struct cfg80211_registered_device *rdev;
11464 struct nlattr **attrbuf = NULL;
11465 int err;
11466 long phy_idx;
11467 void *data = NULL;
11468 int data_len = 0;
11469
11470 rtnl_lock();
11471
11472 if (cb->args[0]) {
11473 /*
11474 * 0 is a valid index, but not valid for args[0],
11475 * so we need to offset by 1.
11476 */
11477 phy_idx = cb->args[0] - 1;
11478
11479 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11480 if (!rdev) {
11481 err = -ENOENT;
11482 goto out_err;
11483 }
11484 } else {
11485 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11486 GFP_KERNEL);
11487 if (!attrbuf) {
11488 err = -ENOMEM;
11489 goto out_err;
11490 }
11491
11492 err = nlmsg_parse_deprecated(cb->nlh,
11493 GENL_HDRLEN + nl80211_fam.hdrsize,
11494 attrbuf, nl80211_fam.maxattr,
11495 nl80211_policy, NULL);
11496 if (err)
11497 goto out_err;
11498
11499 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11500 if (IS_ERR(rdev)) {
11501 err = PTR_ERR(rdev);
11502 goto out_err;
11503 }
11504 phy_idx = rdev->wiphy_idx;
11505
11506 if (attrbuf[NL80211_ATTR_TESTDATA])
11507 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11508 }
11509
11510 if (cb->args[1]) {
11511 data = nla_data((void *)cb->args[1]);
11512 data_len = nla_len((void *)cb->args[1]);
11513 }
11514
11515 if (!rdev->ops->testmode_dump) {
11516 err = -EOPNOTSUPP;
11517 goto out_err;
11518 }
11519
11520 while (1) {
11521 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11522 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11523 NL80211_CMD_TESTMODE);
11524 struct nlattr *tmdata;
11525
11526 if (!hdr)
11527 break;
11528
11529 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11530 genlmsg_cancel(skb, hdr);
11531 break;
11532 }
11533
11534 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11535 if (!tmdata) {
11536 genlmsg_cancel(skb, hdr);
11537 break;
11538 }
11539 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11540 nla_nest_end(skb, tmdata);
11541
11542 if (err == -ENOBUFS || err == -ENOENT) {
11543 genlmsg_cancel(skb, hdr);
11544 break;
11545 } else if (err) {
11546 genlmsg_cancel(skb, hdr);
11547 goto out_err;
11548 }
11549
11550 genlmsg_end(skb, hdr);
11551 }
11552
11553 err = skb->len;
11554 /* see above */
11555 cb->args[0] = phy_idx + 1;
11556 out_err:
11557 kfree(attrbuf);
11558 rtnl_unlock();
11559 return err;
11560 }
11561 #endif
11562
nl80211_connect(struct sk_buff * skb,struct genl_info * info)11563 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11564 {
11565 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11566 struct net_device *dev = info->user_ptr[1];
11567 struct cfg80211_connect_params connect;
11568 struct wiphy *wiphy;
11569 struct cfg80211_cached_keys *connkeys = NULL;
11570 u32 freq = 0;
11571 int err;
11572
11573 memset(&connect, 0, sizeof(connect));
11574
11575 if (!info->attrs[NL80211_ATTR_SSID] ||
11576 !nla_len(info->attrs[NL80211_ATTR_SSID]))
11577 return -EINVAL;
11578
11579 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11580 connect.auth_type =
11581 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11582 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11583 NL80211_CMD_CONNECT))
11584 return -EINVAL;
11585 } else
11586 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11587
11588 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11589
11590 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11591 !wiphy_ext_feature_isset(&rdev->wiphy,
11592 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11593 return -EINVAL;
11594 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11595
11596 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11597 NL80211_MAX_NR_CIPHER_SUITES);
11598 if (err)
11599 return err;
11600
11601 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11602 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11603 return -EOPNOTSUPP;
11604
11605 wiphy = &rdev->wiphy;
11606
11607 connect.bg_scan_period = -1;
11608 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11609 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11610 connect.bg_scan_period =
11611 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11612 }
11613
11614 if (info->attrs[NL80211_ATTR_MAC])
11615 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11616 else if (info->attrs[NL80211_ATTR_MAC_HINT])
11617 connect.bssid_hint =
11618 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11619 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11620 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11621
11622 if (info->attrs[NL80211_ATTR_IE]) {
11623 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11624 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11625 }
11626
11627 if (info->attrs[NL80211_ATTR_USE_MFP]) {
11628 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11629 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11630 !wiphy_ext_feature_isset(&rdev->wiphy,
11631 NL80211_EXT_FEATURE_MFP_OPTIONAL))
11632 return -EOPNOTSUPP;
11633 } else {
11634 connect.mfp = NL80211_MFP_NO;
11635 }
11636
11637 if (info->attrs[NL80211_ATTR_PREV_BSSID])
11638 connect.prev_bssid =
11639 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11640
11641 if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11642 freq = MHZ_TO_KHZ(nla_get_u32(
11643 info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11644 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11645 freq +=
11646 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11647
11648 if (freq) {
11649 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11650 if (!connect.channel)
11651 return -EINVAL;
11652 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11653 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11654 freq = MHZ_TO_KHZ(freq);
11655 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11656 if (!connect.channel_hint)
11657 return -EINVAL;
11658 }
11659
11660 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11661 connect.edmg.channels =
11662 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11663
11664 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11665 connect.edmg.bw_config =
11666 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11667 }
11668
11669 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11670 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11671 if (IS_ERR(connkeys))
11672 return PTR_ERR(connkeys);
11673 }
11674
11675 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11676 connect.flags |= ASSOC_REQ_DISABLE_HT;
11677
11678 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11679 memcpy(&connect.ht_capa_mask,
11680 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11681 sizeof(connect.ht_capa_mask));
11682
11683 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11684 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11685 kfree_sensitive(connkeys);
11686 return -EINVAL;
11687 }
11688 memcpy(&connect.ht_capa,
11689 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11690 sizeof(connect.ht_capa));
11691 }
11692
11693 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11694 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11695
11696 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11697 connect.flags |= ASSOC_REQ_DISABLE_HE;
11698
11699 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11700 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11701
11702 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11703 memcpy(&connect.vht_capa_mask,
11704 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11705 sizeof(connect.vht_capa_mask));
11706
11707 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11708 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11709 kfree_sensitive(connkeys);
11710 return -EINVAL;
11711 }
11712 memcpy(&connect.vht_capa,
11713 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11714 sizeof(connect.vht_capa));
11715 }
11716
11717 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11718 if (!((rdev->wiphy.features &
11719 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11720 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11721 !wiphy_ext_feature_isset(&rdev->wiphy,
11722 NL80211_EXT_FEATURE_RRM)) {
11723 kfree_sensitive(connkeys);
11724 return -EINVAL;
11725 }
11726 connect.flags |= ASSOC_REQ_USE_RRM;
11727 }
11728
11729 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11730 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11731 kfree_sensitive(connkeys);
11732 return -EOPNOTSUPP;
11733 }
11734
11735 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11736 /* bss selection makes no sense if bssid is set */
11737 if (connect.bssid) {
11738 kfree_sensitive(connkeys);
11739 return -EINVAL;
11740 }
11741
11742 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11743 wiphy, &connect.bss_select);
11744 if (err) {
11745 kfree_sensitive(connkeys);
11746 return err;
11747 }
11748 }
11749
11750 if (wiphy_ext_feature_isset(&rdev->wiphy,
11751 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11752 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11753 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11754 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11755 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11756 connect.fils_erp_username =
11757 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11758 connect.fils_erp_username_len =
11759 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11760 connect.fils_erp_realm =
11761 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11762 connect.fils_erp_realm_len =
11763 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11764 connect.fils_erp_next_seq_num =
11765 nla_get_u16(
11766 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11767 connect.fils_erp_rrk =
11768 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11769 connect.fils_erp_rrk_len =
11770 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11771 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11772 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11773 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11774 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11775 kfree_sensitive(connkeys);
11776 return -EINVAL;
11777 }
11778
11779 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11780 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11781 kfree_sensitive(connkeys);
11782 GENL_SET_ERR_MSG(info,
11783 "external auth requires connection ownership");
11784 return -EINVAL;
11785 }
11786 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11787 }
11788
11789 if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11790 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11791
11792 wdev_lock(dev->ieee80211_ptr);
11793
11794 err = cfg80211_connect(rdev, dev, &connect, connkeys,
11795 connect.prev_bssid);
11796 if (err)
11797 kfree_sensitive(connkeys);
11798
11799 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11800 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11801 if (connect.bssid)
11802 memcpy(dev->ieee80211_ptr->disconnect_bssid,
11803 connect.bssid, ETH_ALEN);
11804 else
11805 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11806 }
11807
11808 wdev_unlock(dev->ieee80211_ptr);
11809
11810 return err;
11811 }
11812
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)11813 static int nl80211_update_connect_params(struct sk_buff *skb,
11814 struct genl_info *info)
11815 {
11816 struct cfg80211_connect_params connect = {};
11817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11818 struct net_device *dev = info->user_ptr[1];
11819 struct wireless_dev *wdev = dev->ieee80211_ptr;
11820 bool fils_sk_offload;
11821 u32 auth_type;
11822 u32 changed = 0;
11823 int ret;
11824
11825 if (!rdev->ops->update_connect_params)
11826 return -EOPNOTSUPP;
11827
11828 if (info->attrs[NL80211_ATTR_IE]) {
11829 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11830 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11831 changed |= UPDATE_ASSOC_IES;
11832 }
11833
11834 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11835 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11836
11837 /*
11838 * when driver supports fils-sk offload all attributes must be
11839 * provided. So the else covers "fils-sk-not-all" and
11840 * "no-fils-sk-any".
11841 */
11842 if (fils_sk_offload &&
11843 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11844 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11845 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11846 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11847 connect.fils_erp_username =
11848 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11849 connect.fils_erp_username_len =
11850 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11851 connect.fils_erp_realm =
11852 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11853 connect.fils_erp_realm_len =
11854 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11855 connect.fils_erp_next_seq_num =
11856 nla_get_u16(
11857 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11858 connect.fils_erp_rrk =
11859 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11860 connect.fils_erp_rrk_len =
11861 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11862 changed |= UPDATE_FILS_ERP_INFO;
11863 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11864 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11865 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11866 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11867 return -EINVAL;
11868 }
11869
11870 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11871 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11872 if (!nl80211_valid_auth_type(rdev, auth_type,
11873 NL80211_CMD_CONNECT))
11874 return -EINVAL;
11875
11876 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11877 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11878 return -EINVAL;
11879
11880 connect.auth_type = auth_type;
11881 changed |= UPDATE_AUTH_TYPE;
11882 }
11883
11884 wdev_lock(dev->ieee80211_ptr);
11885 if (!wdev->connected)
11886 ret = -ENOLINK;
11887 else
11888 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11889 wdev_unlock(dev->ieee80211_ptr);
11890
11891 return ret;
11892 }
11893
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)11894 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11895 {
11896 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11897 struct net_device *dev = info->user_ptr[1];
11898 u16 reason;
11899 int ret;
11900
11901 if (dev->ieee80211_ptr->conn_owner_nlportid &&
11902 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11903 return -EPERM;
11904
11905 if (!info->attrs[NL80211_ATTR_REASON_CODE])
11906 reason = WLAN_REASON_DEAUTH_LEAVING;
11907 else
11908 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11909
11910 if (reason == 0)
11911 return -EINVAL;
11912
11913 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11914 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11915 return -EOPNOTSUPP;
11916
11917 wdev_lock(dev->ieee80211_ptr);
11918 ret = cfg80211_disconnect(rdev, dev, reason, true);
11919 wdev_unlock(dev->ieee80211_ptr);
11920 return ret;
11921 }
11922
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)11923 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11924 {
11925 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11926 struct net *net;
11927 int err;
11928
11929 if (info->attrs[NL80211_ATTR_PID]) {
11930 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11931
11932 net = get_net_ns_by_pid(pid);
11933 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11934 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11935
11936 net = get_net_ns_by_fd(fd);
11937 } else {
11938 return -EINVAL;
11939 }
11940
11941 if (IS_ERR(net))
11942 return PTR_ERR(net);
11943
11944 err = 0;
11945
11946 /* check if anything to do */
11947 if (!net_eq(wiphy_net(&rdev->wiphy), net))
11948 err = cfg80211_switch_netns(rdev, net);
11949
11950 put_net(net);
11951 return err;
11952 }
11953
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)11954 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11955 {
11956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11957 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11958 struct cfg80211_pmksa *pmksa) = NULL;
11959 struct net_device *dev = info->user_ptr[1];
11960 struct cfg80211_pmksa pmksa;
11961
11962 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11963
11964 if (!info->attrs[NL80211_ATTR_PMKID])
11965 return -EINVAL;
11966
11967 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11968
11969 if (info->attrs[NL80211_ATTR_MAC]) {
11970 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11971 } else if (info->attrs[NL80211_ATTR_SSID] &&
11972 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11973 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11974 info->attrs[NL80211_ATTR_PMK])) {
11975 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11976 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11977 pmksa.cache_id =
11978 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11979 } else {
11980 return -EINVAL;
11981 }
11982 if (info->attrs[NL80211_ATTR_PMK]) {
11983 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11984 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11985 }
11986
11987 if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11988 pmksa.pmk_lifetime =
11989 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11990
11991 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11992 pmksa.pmk_reauth_threshold =
11993 nla_get_u8(
11994 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11995
11996 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11997 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11998 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11999 wiphy_ext_feature_isset(&rdev->wiphy,
12000 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12001 return -EOPNOTSUPP;
12002
12003 switch (info->genlhdr->cmd) {
12004 case NL80211_CMD_SET_PMKSA:
12005 rdev_ops = rdev->ops->set_pmksa;
12006 break;
12007 case NL80211_CMD_DEL_PMKSA:
12008 rdev_ops = rdev->ops->del_pmksa;
12009 break;
12010 default:
12011 WARN_ON(1);
12012 break;
12013 }
12014
12015 if (!rdev_ops)
12016 return -EOPNOTSUPP;
12017
12018 return rdev_ops(&rdev->wiphy, dev, &pmksa);
12019 }
12020
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)12021 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12022 {
12023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12024 struct net_device *dev = info->user_ptr[1];
12025
12026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12028 return -EOPNOTSUPP;
12029
12030 if (!rdev->ops->flush_pmksa)
12031 return -EOPNOTSUPP;
12032
12033 return rdev_flush_pmksa(rdev, dev);
12034 }
12035
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)12036 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12037 {
12038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12039 struct net_device *dev = info->user_ptr[1];
12040 u8 action_code, dialog_token;
12041 u32 peer_capability = 0;
12042 u16 status_code;
12043 u8 *peer;
12044 bool initiator;
12045
12046 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12047 !rdev->ops->tdls_mgmt)
12048 return -EOPNOTSUPP;
12049
12050 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12051 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12052 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12053 !info->attrs[NL80211_ATTR_IE] ||
12054 !info->attrs[NL80211_ATTR_MAC])
12055 return -EINVAL;
12056
12057 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12058 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12059 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12060 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12061 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12062 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12063 peer_capability =
12064 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12065
12066 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
12067 dialog_token, status_code, peer_capability,
12068 initiator,
12069 nla_data(info->attrs[NL80211_ATTR_IE]),
12070 nla_len(info->attrs[NL80211_ATTR_IE]));
12071 }
12072
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)12073 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12074 {
12075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12076 struct net_device *dev = info->user_ptr[1];
12077 enum nl80211_tdls_operation operation;
12078 u8 *peer;
12079
12080 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12081 !rdev->ops->tdls_oper)
12082 return -EOPNOTSUPP;
12083
12084 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12085 !info->attrs[NL80211_ATTR_MAC])
12086 return -EINVAL;
12087
12088 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12089 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12090
12091 return rdev_tdls_oper(rdev, dev, peer, operation);
12092 }
12093
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12094 static int nl80211_remain_on_channel(struct sk_buff *skb,
12095 struct genl_info *info)
12096 {
12097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12098 unsigned int link_id = nl80211_link_id(info->attrs);
12099 struct wireless_dev *wdev = info->user_ptr[1];
12100 struct cfg80211_chan_def chandef;
12101 struct sk_buff *msg;
12102 void *hdr;
12103 u64 cookie;
12104 u32 duration;
12105 int err;
12106
12107 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12108 !info->attrs[NL80211_ATTR_DURATION])
12109 return -EINVAL;
12110
12111 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12112
12113 if (!rdev->ops->remain_on_channel ||
12114 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12115 return -EOPNOTSUPP;
12116
12117 /*
12118 * We should be on that channel for at least a minimum amount of
12119 * time (10ms) but no longer than the driver supports.
12120 */
12121 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12122 duration > rdev->wiphy.max_remain_on_channel_duration)
12123 return -EINVAL;
12124
12125 err = nl80211_parse_chandef(rdev, info, &chandef);
12126 if (err)
12127 return err;
12128
12129 wdev_lock(wdev);
12130 if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12131 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12132
12133 oper_chandef = wdev_chandef(wdev, link_id);
12134
12135 if (WARN_ON(!oper_chandef)) {
12136 /* cannot happen since we must beacon to get here */
12137 WARN_ON(1);
12138 wdev_unlock(wdev);
12139 return -EBUSY;
12140 }
12141
12142 /* note: returns first one if identical chandefs */
12143 compat_chandef = cfg80211_chandef_compatible(&chandef,
12144 oper_chandef);
12145
12146 if (compat_chandef != &chandef) {
12147 wdev_unlock(wdev);
12148 return -EBUSY;
12149 }
12150 }
12151 wdev_unlock(wdev);
12152
12153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12154 if (!msg)
12155 return -ENOMEM;
12156
12157 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12158 NL80211_CMD_REMAIN_ON_CHANNEL);
12159 if (!hdr) {
12160 err = -ENOBUFS;
12161 goto free_msg;
12162 }
12163
12164 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12165 duration, &cookie);
12166
12167 if (err)
12168 goto free_msg;
12169
12170 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12171 NL80211_ATTR_PAD))
12172 goto nla_put_failure;
12173
12174 genlmsg_end(msg, hdr);
12175
12176 return genlmsg_reply(msg, info);
12177
12178 nla_put_failure:
12179 err = -ENOBUFS;
12180 free_msg:
12181 nlmsg_free(msg);
12182 return err;
12183 }
12184
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)12185 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12186 struct genl_info *info)
12187 {
12188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12189 struct wireless_dev *wdev = info->user_ptr[1];
12190 u64 cookie;
12191
12192 if (!info->attrs[NL80211_ATTR_COOKIE])
12193 return -EINVAL;
12194
12195 if (!rdev->ops->cancel_remain_on_channel)
12196 return -EOPNOTSUPP;
12197
12198 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12199
12200 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12201 }
12202
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)12203 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12204 struct genl_info *info)
12205 {
12206 struct cfg80211_bitrate_mask mask;
12207 unsigned int link_id = nl80211_link_id(info->attrs);
12208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12209 struct net_device *dev = info->user_ptr[1];
12210 struct wireless_dev *wdev = dev->ieee80211_ptr;
12211 int err;
12212
12213 if (!rdev->ops->set_bitrate_mask)
12214 return -EOPNOTSUPP;
12215
12216 wdev_lock(wdev);
12217 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12218 NL80211_ATTR_TX_RATES, &mask,
12219 dev, true, link_id);
12220 if (err)
12221 goto out;
12222
12223 err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12224 out:
12225 wdev_unlock(wdev);
12226 return err;
12227 }
12228
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)12229 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12230 {
12231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12232 struct wireless_dev *wdev = info->user_ptr[1];
12233 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12234
12235 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12236 return -EINVAL;
12237
12238 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12239 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12240
12241 switch (wdev->iftype) {
12242 case NL80211_IFTYPE_STATION:
12243 case NL80211_IFTYPE_ADHOC:
12244 case NL80211_IFTYPE_P2P_CLIENT:
12245 case NL80211_IFTYPE_AP:
12246 case NL80211_IFTYPE_AP_VLAN:
12247 case NL80211_IFTYPE_MESH_POINT:
12248 case NL80211_IFTYPE_P2P_GO:
12249 case NL80211_IFTYPE_P2P_DEVICE:
12250 break;
12251 case NL80211_IFTYPE_NAN:
12252 default:
12253 return -EOPNOTSUPP;
12254 }
12255
12256 /* not much point in registering if we can't reply */
12257 if (!rdev->ops->mgmt_tx)
12258 return -EOPNOTSUPP;
12259
12260 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12261 !wiphy_ext_feature_isset(&rdev->wiphy,
12262 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12263 GENL_SET_ERR_MSG(info,
12264 "multicast RX registrations are not supported");
12265 return -EOPNOTSUPP;
12266 }
12267
12268 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12269 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12270 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12271 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12272 info->extack);
12273 }
12274
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)12275 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12276 {
12277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12278 struct wireless_dev *wdev = info->user_ptr[1];
12279 struct cfg80211_chan_def chandef;
12280 int err;
12281 void *hdr = NULL;
12282 u64 cookie;
12283 struct sk_buff *msg = NULL;
12284 struct cfg80211_mgmt_tx_params params = {
12285 .dont_wait_for_ack =
12286 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12287 };
12288
12289 if (!info->attrs[NL80211_ATTR_FRAME])
12290 return -EINVAL;
12291
12292 if (!rdev->ops->mgmt_tx)
12293 return -EOPNOTSUPP;
12294
12295 switch (wdev->iftype) {
12296 case NL80211_IFTYPE_P2P_DEVICE:
12297 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12298 return -EINVAL;
12299 break;
12300 case NL80211_IFTYPE_STATION:
12301 case NL80211_IFTYPE_ADHOC:
12302 case NL80211_IFTYPE_P2P_CLIENT:
12303 case NL80211_IFTYPE_AP:
12304 case NL80211_IFTYPE_AP_VLAN:
12305 case NL80211_IFTYPE_MESH_POINT:
12306 case NL80211_IFTYPE_P2P_GO:
12307 break;
12308 case NL80211_IFTYPE_NAN:
12309 default:
12310 return -EOPNOTSUPP;
12311 }
12312
12313 if (info->attrs[NL80211_ATTR_DURATION]) {
12314 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12315 return -EINVAL;
12316 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12317
12318 /*
12319 * We should wait on the channel for at least a minimum amount
12320 * of time (10ms) but no longer than the driver supports.
12321 */
12322 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12323 params.wait > rdev->wiphy.max_remain_on_channel_duration)
12324 return -EINVAL;
12325 }
12326
12327 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12328
12329 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12330 return -EINVAL;
12331
12332 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12333
12334 /* get the channel if any has been specified, otherwise pass NULL to
12335 * the driver. The latter will use the current one
12336 */
12337 chandef.chan = NULL;
12338 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12339 err = nl80211_parse_chandef(rdev, info, &chandef);
12340 if (err)
12341 return err;
12342 }
12343
12344 if (!chandef.chan && params.offchan)
12345 return -EINVAL;
12346
12347 wdev_lock(wdev);
12348 if (params.offchan &&
12349 !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12350 wdev_unlock(wdev);
12351 return -EBUSY;
12352 }
12353
12354 params.link_id = nl80211_link_id_or_invalid(info->attrs);
12355 /*
12356 * This now races due to the unlock, but we cannot check
12357 * the valid links for the _station_ anyway, so that's up
12358 * to the driver.
12359 */
12360 if (params.link_id >= 0 &&
12361 !(wdev->valid_links & BIT(params.link_id))) {
12362 wdev_unlock(wdev);
12363 return -EINVAL;
12364 }
12365 wdev_unlock(wdev);
12366
12367 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12368 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12369
12370 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12371 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12372 int i;
12373
12374 if (len % sizeof(u16))
12375 return -EINVAL;
12376
12377 params.n_csa_offsets = len / sizeof(u16);
12378 params.csa_offsets =
12379 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12380
12381 /* check that all the offsets fit the frame */
12382 for (i = 0; i < params.n_csa_offsets; i++) {
12383 if (params.csa_offsets[i] >= params.len)
12384 return -EINVAL;
12385 }
12386 }
12387
12388 if (!params.dont_wait_for_ack) {
12389 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12390 if (!msg)
12391 return -ENOMEM;
12392
12393 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12394 NL80211_CMD_FRAME);
12395 if (!hdr) {
12396 err = -ENOBUFS;
12397 goto free_msg;
12398 }
12399 }
12400
12401 params.chan = chandef.chan;
12402 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
12403 if (err)
12404 goto free_msg;
12405
12406 if (msg) {
12407 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12408 NL80211_ATTR_PAD))
12409 goto nla_put_failure;
12410
12411 genlmsg_end(msg, hdr);
12412 return genlmsg_reply(msg, info);
12413 }
12414
12415 return 0;
12416
12417 nla_put_failure:
12418 err = -ENOBUFS;
12419 free_msg:
12420 nlmsg_free(msg);
12421 return err;
12422 }
12423
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)12424 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12425 {
12426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12427 struct wireless_dev *wdev = info->user_ptr[1];
12428 u64 cookie;
12429
12430 if (!info->attrs[NL80211_ATTR_COOKIE])
12431 return -EINVAL;
12432
12433 if (!rdev->ops->mgmt_tx_cancel_wait)
12434 return -EOPNOTSUPP;
12435
12436 switch (wdev->iftype) {
12437 case NL80211_IFTYPE_STATION:
12438 case NL80211_IFTYPE_ADHOC:
12439 case NL80211_IFTYPE_P2P_CLIENT:
12440 case NL80211_IFTYPE_AP:
12441 case NL80211_IFTYPE_AP_VLAN:
12442 case NL80211_IFTYPE_P2P_GO:
12443 case NL80211_IFTYPE_P2P_DEVICE:
12444 break;
12445 case NL80211_IFTYPE_NAN:
12446 default:
12447 return -EOPNOTSUPP;
12448 }
12449
12450 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12451
12452 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12453 }
12454
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)12455 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12456 {
12457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12458 struct wireless_dev *wdev;
12459 struct net_device *dev = info->user_ptr[1];
12460 u8 ps_state;
12461 bool state;
12462 int err;
12463
12464 if (!info->attrs[NL80211_ATTR_PS_STATE])
12465 return -EINVAL;
12466
12467 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12468
12469 wdev = dev->ieee80211_ptr;
12470
12471 if (!rdev->ops->set_power_mgmt)
12472 return -EOPNOTSUPP;
12473
12474 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12475
12476 if (state == wdev->ps)
12477 return 0;
12478
12479 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12480 if (!err)
12481 wdev->ps = state;
12482 return err;
12483 }
12484
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)12485 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12486 {
12487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12488 enum nl80211_ps_state ps_state;
12489 struct wireless_dev *wdev;
12490 struct net_device *dev = info->user_ptr[1];
12491 struct sk_buff *msg;
12492 void *hdr;
12493 int err;
12494
12495 wdev = dev->ieee80211_ptr;
12496
12497 if (!rdev->ops->set_power_mgmt)
12498 return -EOPNOTSUPP;
12499
12500 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12501 if (!msg)
12502 return -ENOMEM;
12503
12504 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12505 NL80211_CMD_GET_POWER_SAVE);
12506 if (!hdr) {
12507 err = -ENOBUFS;
12508 goto free_msg;
12509 }
12510
12511 if (wdev->ps)
12512 ps_state = NL80211_PS_ENABLED;
12513 else
12514 ps_state = NL80211_PS_DISABLED;
12515
12516 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12517 goto nla_put_failure;
12518
12519 genlmsg_end(msg, hdr);
12520 return genlmsg_reply(msg, info);
12521
12522 nla_put_failure:
12523 err = -ENOBUFS;
12524 free_msg:
12525 nlmsg_free(msg);
12526 return err;
12527 }
12528
12529 static const struct nla_policy
12530 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12531 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12532 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12533 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12534 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12535 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12536 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12537 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12538 };
12539
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)12540 static int nl80211_set_cqm_txe(struct genl_info *info,
12541 u32 rate, u32 pkts, u32 intvl)
12542 {
12543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12544 struct net_device *dev = info->user_ptr[1];
12545 struct wireless_dev *wdev = dev->ieee80211_ptr;
12546
12547 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12548 return -EINVAL;
12549
12550 if (!rdev->ops->set_cqm_txe_config)
12551 return -EOPNOTSUPP;
12552
12553 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12554 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12555 return -EOPNOTSUPP;
12556
12557 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12558 }
12559
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev)12560 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12561 struct net_device *dev)
12562 {
12563 struct wireless_dev *wdev = dev->ieee80211_ptr;
12564 s32 last, low, high;
12565 u32 hyst;
12566 int i, n, low_index;
12567 int err;
12568
12569 /* RSSI reporting disabled? */
12570 if (!wdev->cqm_config)
12571 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12572
12573 /*
12574 * Obtain current RSSI value if possible, if not and no RSSI threshold
12575 * event has been received yet, we should receive an event after a
12576 * connection is established and enough beacons received to calculate
12577 * the average.
12578 */
12579 if (!wdev->cqm_config->last_rssi_event_value &&
12580 wdev->links[0].client.current_bss &&
12581 rdev->ops->get_station) {
12582 struct station_info sinfo = {};
12583 u8 *mac_addr;
12584
12585 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12586
12587 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12588 if (err)
12589 return err;
12590
12591 cfg80211_sinfo_release_content(&sinfo);
12592 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12593 wdev->cqm_config->last_rssi_event_value =
12594 (s8) sinfo.rx_beacon_signal_avg;
12595 }
12596
12597 last = wdev->cqm_config->last_rssi_event_value;
12598 hyst = wdev->cqm_config->rssi_hyst;
12599 n = wdev->cqm_config->n_rssi_thresholds;
12600
12601 for (i = 0; i < n; i++) {
12602 i = array_index_nospec(i, n);
12603 if (last < wdev->cqm_config->rssi_thresholds[i])
12604 break;
12605 }
12606
12607 low_index = i - 1;
12608 if (low_index >= 0) {
12609 low_index = array_index_nospec(low_index, n);
12610 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12611 } else {
12612 low = S32_MIN;
12613 }
12614 if (i < n) {
12615 i = array_index_nospec(i, n);
12616 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12617 } else {
12618 high = S32_MAX;
12619 }
12620
12621 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12622 }
12623
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)12624 static int nl80211_set_cqm_rssi(struct genl_info *info,
12625 const s32 *thresholds, int n_thresholds,
12626 u32 hysteresis)
12627 {
12628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12629 struct net_device *dev = info->user_ptr[1];
12630 struct wireless_dev *wdev = dev->ieee80211_ptr;
12631 int i, err;
12632 s32 prev = S32_MIN;
12633
12634 /* Check all values negative and sorted */
12635 for (i = 0; i < n_thresholds; i++) {
12636 if (thresholds[i] > 0 || thresholds[i] <= prev)
12637 return -EINVAL;
12638
12639 prev = thresholds[i];
12640 }
12641
12642 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12643 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12644 return -EOPNOTSUPP;
12645
12646 wdev_lock(wdev);
12647 cfg80211_cqm_config_free(wdev);
12648 wdev_unlock(wdev);
12649
12650 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12651 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12652 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12653
12654 return rdev_set_cqm_rssi_config(rdev, dev,
12655 thresholds[0], hysteresis);
12656 }
12657
12658 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12659 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12660 return -EOPNOTSUPP;
12661
12662 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12663 n_thresholds = 0;
12664
12665 wdev_lock(wdev);
12666 if (n_thresholds) {
12667 struct cfg80211_cqm_config *cqm_config;
12668
12669 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12670 n_thresholds),
12671 GFP_KERNEL);
12672 if (!cqm_config) {
12673 err = -ENOMEM;
12674 goto unlock;
12675 }
12676
12677 cqm_config->rssi_hyst = hysteresis;
12678 cqm_config->n_rssi_thresholds = n_thresholds;
12679 memcpy(cqm_config->rssi_thresholds, thresholds,
12680 flex_array_size(cqm_config, rssi_thresholds,
12681 n_thresholds));
12682
12683 wdev->cqm_config = cqm_config;
12684 }
12685
12686 err = cfg80211_cqm_rssi_update(rdev, dev);
12687
12688 unlock:
12689 wdev_unlock(wdev);
12690
12691 return err;
12692 }
12693
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)12694 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12695 {
12696 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12697 struct nlattr *cqm;
12698 int err;
12699
12700 cqm = info->attrs[NL80211_ATTR_CQM];
12701 if (!cqm)
12702 return -EINVAL;
12703
12704 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12705 nl80211_attr_cqm_policy,
12706 info->extack);
12707 if (err)
12708 return err;
12709
12710 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12711 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12712 const s32 *thresholds =
12713 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12714 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12715 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12716
12717 if (len % 4)
12718 return -EINVAL;
12719
12720 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12721 hysteresis);
12722 }
12723
12724 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12725 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12726 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12727 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12728 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12729 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12730
12731 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12732 }
12733
12734 return -EINVAL;
12735 }
12736
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)12737 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12738 {
12739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12740 struct net_device *dev = info->user_ptr[1];
12741 struct ocb_setup setup = {};
12742 int err;
12743
12744 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12745 if (err)
12746 return err;
12747
12748 return cfg80211_join_ocb(rdev, dev, &setup);
12749 }
12750
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)12751 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12752 {
12753 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12754 struct net_device *dev = info->user_ptr[1];
12755
12756 return cfg80211_leave_ocb(rdev, dev);
12757 }
12758
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)12759 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12760 {
12761 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12762 struct net_device *dev = info->user_ptr[1];
12763 struct mesh_config cfg;
12764 struct mesh_setup setup;
12765 int err;
12766
12767 /* start with default */
12768 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12769 memcpy(&setup, &default_mesh_setup, sizeof(setup));
12770
12771 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12772 /* and parse parameters if given */
12773 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12774 if (err)
12775 return err;
12776 }
12777
12778 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12779 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12780 return -EINVAL;
12781
12782 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12783 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12784
12785 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12786 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12787 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12788 return -EINVAL;
12789
12790 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12791 setup.beacon_interval =
12792 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12793
12794 err = cfg80211_validate_beacon_int(rdev,
12795 NL80211_IFTYPE_MESH_POINT,
12796 setup.beacon_interval);
12797 if (err)
12798 return err;
12799 }
12800
12801 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12802 setup.dtim_period =
12803 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12804 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12805 return -EINVAL;
12806 }
12807
12808 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12809 /* parse additional setup parameters if given */
12810 err = nl80211_parse_mesh_setup(info, &setup);
12811 if (err)
12812 return err;
12813 }
12814
12815 if (setup.user_mpm)
12816 cfg.auto_open_plinks = false;
12817
12818 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12819 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12820 if (err)
12821 return err;
12822 } else {
12823 /* __cfg80211_join_mesh() will sort it out */
12824 setup.chandef.chan = NULL;
12825 }
12826
12827 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12828 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12829 int n_rates =
12830 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12831 struct ieee80211_supported_band *sband;
12832
12833 if (!setup.chandef.chan)
12834 return -EINVAL;
12835
12836 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12837
12838 err = ieee80211_get_ratemask(sband, rates, n_rates,
12839 &setup.basic_rates);
12840 if (err)
12841 return err;
12842 }
12843
12844 if (info->attrs[NL80211_ATTR_TX_RATES]) {
12845 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12846 NL80211_ATTR_TX_RATES,
12847 &setup.beacon_rate,
12848 dev, false, 0);
12849 if (err)
12850 return err;
12851
12852 if (!setup.chandef.chan)
12853 return -EINVAL;
12854
12855 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12856 &setup.beacon_rate);
12857 if (err)
12858 return err;
12859 }
12860
12861 setup.userspace_handles_dfs =
12862 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12863
12864 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12865 int r = validate_pae_over_nl80211(rdev, info);
12866
12867 if (r < 0)
12868 return r;
12869
12870 setup.control_port_over_nl80211 = true;
12871 }
12872
12873 wdev_lock(dev->ieee80211_ptr);
12874 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12875 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12876 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12877 wdev_unlock(dev->ieee80211_ptr);
12878
12879 return err;
12880 }
12881
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)12882 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12883 {
12884 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12885 struct net_device *dev = info->user_ptr[1];
12886
12887 return cfg80211_leave_mesh(rdev, dev);
12888 }
12889
12890 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)12891 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12892 struct cfg80211_registered_device *rdev)
12893 {
12894 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12895 struct nlattr *nl_pats, *nl_pat;
12896 int i, pat_len;
12897
12898 if (!wowlan->n_patterns)
12899 return 0;
12900
12901 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12902 if (!nl_pats)
12903 return -ENOBUFS;
12904
12905 for (i = 0; i < wowlan->n_patterns; i++) {
12906 nl_pat = nla_nest_start_noflag(msg, i + 1);
12907 if (!nl_pat)
12908 return -ENOBUFS;
12909 pat_len = wowlan->patterns[i].pattern_len;
12910 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12911 wowlan->patterns[i].mask) ||
12912 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12913 wowlan->patterns[i].pattern) ||
12914 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12915 wowlan->patterns[i].pkt_offset))
12916 return -ENOBUFS;
12917 nla_nest_end(msg, nl_pat);
12918 }
12919 nla_nest_end(msg, nl_pats);
12920
12921 return 0;
12922 }
12923
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)12924 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12925 struct cfg80211_wowlan_tcp *tcp)
12926 {
12927 struct nlattr *nl_tcp;
12928
12929 if (!tcp)
12930 return 0;
12931
12932 nl_tcp = nla_nest_start_noflag(msg,
12933 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12934 if (!nl_tcp)
12935 return -ENOBUFS;
12936
12937 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12938 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12939 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12940 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12941 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12942 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12943 tcp->payload_len, tcp->payload) ||
12944 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12945 tcp->data_interval) ||
12946 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12947 tcp->wake_len, tcp->wake_data) ||
12948 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12949 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12950 return -ENOBUFS;
12951
12952 if (tcp->payload_seq.len &&
12953 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12954 sizeof(tcp->payload_seq), &tcp->payload_seq))
12955 return -ENOBUFS;
12956
12957 if (tcp->payload_tok.len &&
12958 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12959 sizeof(tcp->payload_tok) + tcp->tokens_size,
12960 &tcp->payload_tok))
12961 return -ENOBUFS;
12962
12963 nla_nest_end(msg, nl_tcp);
12964
12965 return 0;
12966 }
12967
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)12968 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12969 struct cfg80211_sched_scan_request *req)
12970 {
12971 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12972 int i;
12973
12974 if (!req)
12975 return 0;
12976
12977 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12978 if (!nd)
12979 return -ENOBUFS;
12980
12981 if (req->n_scan_plans == 1 &&
12982 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12983 req->scan_plans[0].interval * 1000))
12984 return -ENOBUFS;
12985
12986 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12987 return -ENOBUFS;
12988
12989 if (req->relative_rssi_set) {
12990 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12991
12992 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12993 req->relative_rssi))
12994 return -ENOBUFS;
12995
12996 rssi_adjust.band = req->rssi_adjust.band;
12997 rssi_adjust.delta = req->rssi_adjust.delta;
12998 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12999 sizeof(rssi_adjust), &rssi_adjust))
13000 return -ENOBUFS;
13001 }
13002
13003 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13004 if (!freqs)
13005 return -ENOBUFS;
13006
13007 for (i = 0; i < req->n_channels; i++) {
13008 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13009 return -ENOBUFS;
13010 }
13011
13012 nla_nest_end(msg, freqs);
13013
13014 if (req->n_match_sets) {
13015 matches = nla_nest_start_noflag(msg,
13016 NL80211_ATTR_SCHED_SCAN_MATCH);
13017 if (!matches)
13018 return -ENOBUFS;
13019
13020 for (i = 0; i < req->n_match_sets; i++) {
13021 match = nla_nest_start_noflag(msg, i);
13022 if (!match)
13023 return -ENOBUFS;
13024
13025 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13026 req->match_sets[i].ssid.ssid_len,
13027 req->match_sets[i].ssid.ssid))
13028 return -ENOBUFS;
13029 nla_nest_end(msg, match);
13030 }
13031 nla_nest_end(msg, matches);
13032 }
13033
13034 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13035 if (!scan_plans)
13036 return -ENOBUFS;
13037
13038 for (i = 0; i < req->n_scan_plans; i++) {
13039 scan_plan = nla_nest_start_noflag(msg, i + 1);
13040 if (!scan_plan)
13041 return -ENOBUFS;
13042
13043 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13044 req->scan_plans[i].interval) ||
13045 (req->scan_plans[i].iterations &&
13046 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13047 req->scan_plans[i].iterations)))
13048 return -ENOBUFS;
13049 nla_nest_end(msg, scan_plan);
13050 }
13051 nla_nest_end(msg, scan_plans);
13052
13053 nla_nest_end(msg, nd);
13054
13055 return 0;
13056 }
13057
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)13058 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13059 {
13060 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13061 struct sk_buff *msg;
13062 void *hdr;
13063 u32 size = NLMSG_DEFAULT_SIZE;
13064
13065 if (!rdev->wiphy.wowlan)
13066 return -EOPNOTSUPP;
13067
13068 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13069 /* adjust size to have room for all the data */
13070 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13071 rdev->wiphy.wowlan_config->tcp->payload_len +
13072 rdev->wiphy.wowlan_config->tcp->wake_len +
13073 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13074 }
13075
13076 msg = nlmsg_new(size, GFP_KERNEL);
13077 if (!msg)
13078 return -ENOMEM;
13079
13080 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13081 NL80211_CMD_GET_WOWLAN);
13082 if (!hdr)
13083 goto nla_put_failure;
13084
13085 if (rdev->wiphy.wowlan_config) {
13086 struct nlattr *nl_wowlan;
13087
13088 nl_wowlan = nla_nest_start_noflag(msg,
13089 NL80211_ATTR_WOWLAN_TRIGGERS);
13090 if (!nl_wowlan)
13091 goto nla_put_failure;
13092
13093 if ((rdev->wiphy.wowlan_config->any &&
13094 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13095 (rdev->wiphy.wowlan_config->disconnect &&
13096 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13097 (rdev->wiphy.wowlan_config->magic_pkt &&
13098 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13099 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13100 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13101 (rdev->wiphy.wowlan_config->eap_identity_req &&
13102 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13103 (rdev->wiphy.wowlan_config->four_way_handshake &&
13104 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13105 (rdev->wiphy.wowlan_config->rfkill_release &&
13106 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13107 goto nla_put_failure;
13108
13109 if (nl80211_send_wowlan_patterns(msg, rdev))
13110 goto nla_put_failure;
13111
13112 if (nl80211_send_wowlan_tcp(msg,
13113 rdev->wiphy.wowlan_config->tcp))
13114 goto nla_put_failure;
13115
13116 if (nl80211_send_wowlan_nd(
13117 msg,
13118 rdev->wiphy.wowlan_config->nd_config))
13119 goto nla_put_failure;
13120
13121 nla_nest_end(msg, nl_wowlan);
13122 }
13123
13124 genlmsg_end(msg, hdr);
13125 return genlmsg_reply(msg, info);
13126
13127 nla_put_failure:
13128 nlmsg_free(msg);
13129 return -ENOBUFS;
13130 }
13131
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)13132 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13133 struct nlattr *attr,
13134 struct cfg80211_wowlan *trig)
13135 {
13136 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13137 struct cfg80211_wowlan_tcp *cfg;
13138 struct nl80211_wowlan_tcp_data_token *tok = NULL;
13139 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13140 u32 size;
13141 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13142 int err, port;
13143
13144 if (!rdev->wiphy.wowlan->tcp)
13145 return -EINVAL;
13146
13147 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13148 nl80211_wowlan_tcp_policy, NULL);
13149 if (err)
13150 return err;
13151
13152 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13153 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13154 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13155 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13156 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13157 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13158 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13159 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13160 return -EINVAL;
13161
13162 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13163 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13164 return -EINVAL;
13165
13166 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13167 rdev->wiphy.wowlan->tcp->data_interval_max ||
13168 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13169 return -EINVAL;
13170
13171 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13172 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13173 return -EINVAL;
13174
13175 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13176 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13177 return -EINVAL;
13178
13179 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13180 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13181
13182 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13183 tokens_size = tokln - sizeof(*tok);
13184
13185 if (!tok->len || tokens_size % tok->len)
13186 return -EINVAL;
13187 if (!rdev->wiphy.wowlan->tcp->tok)
13188 return -EINVAL;
13189 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13190 return -EINVAL;
13191 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13192 return -EINVAL;
13193 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13194 return -EINVAL;
13195 if (tok->offset + tok->len > data_size)
13196 return -EINVAL;
13197 }
13198
13199 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13200 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13201 if (!rdev->wiphy.wowlan->tcp->seq)
13202 return -EINVAL;
13203 if (seq->len == 0 || seq->len > 4)
13204 return -EINVAL;
13205 if (seq->len + seq->offset > data_size)
13206 return -EINVAL;
13207 }
13208
13209 size = sizeof(*cfg);
13210 size += data_size;
13211 size += wake_size + wake_mask_size;
13212 size += tokens_size;
13213
13214 cfg = kzalloc(size, GFP_KERNEL);
13215 if (!cfg)
13216 return -ENOMEM;
13217 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13218 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13219 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13220 ETH_ALEN);
13221 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13222 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13223 else
13224 port = 0;
13225 #ifdef CONFIG_INET
13226 /* allocate a socket and port for it and use it */
13227 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13228 IPPROTO_TCP, &cfg->sock, 1);
13229 if (err) {
13230 kfree(cfg);
13231 return err;
13232 }
13233 if (inet_csk_get_port(cfg->sock->sk, port)) {
13234 sock_release(cfg->sock);
13235 kfree(cfg);
13236 return -EADDRINUSE;
13237 }
13238 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13239 #else
13240 if (!port) {
13241 kfree(cfg);
13242 return -EINVAL;
13243 }
13244 cfg->src_port = port;
13245 #endif
13246
13247 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13248 cfg->payload_len = data_size;
13249 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13250 memcpy((void *)cfg->payload,
13251 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13252 data_size);
13253 if (seq)
13254 cfg->payload_seq = *seq;
13255 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13256 cfg->wake_len = wake_size;
13257 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13258 memcpy((void *)cfg->wake_data,
13259 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13260 wake_size);
13261 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13262 data_size + wake_size;
13263 memcpy((void *)cfg->wake_mask,
13264 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13265 wake_mask_size);
13266 if (tok) {
13267 cfg->tokens_size = tokens_size;
13268 cfg->payload_tok = *tok;
13269 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13270 tokens_size);
13271 }
13272
13273 trig->tcp = cfg;
13274
13275 return 0;
13276 }
13277
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)13278 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13279 const struct wiphy_wowlan_support *wowlan,
13280 struct nlattr *attr,
13281 struct cfg80211_wowlan *trig)
13282 {
13283 struct nlattr **tb;
13284 int err;
13285
13286 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13287 if (!tb)
13288 return -ENOMEM;
13289
13290 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13291 err = -EOPNOTSUPP;
13292 goto out;
13293 }
13294
13295 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13296 nl80211_policy, NULL);
13297 if (err)
13298 goto out;
13299
13300 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13301 wowlan->max_nd_match_sets);
13302 err = PTR_ERR_OR_ZERO(trig->nd_config);
13303 if (err)
13304 trig->nd_config = NULL;
13305
13306 out:
13307 kfree(tb);
13308 return err;
13309 }
13310
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)13311 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13312 {
13313 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13314 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13315 struct cfg80211_wowlan new_triggers = {};
13316 struct cfg80211_wowlan *ntrig;
13317 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13318 int err, i;
13319 bool prev_enabled = rdev->wiphy.wowlan_config;
13320 bool regular = false;
13321
13322 if (!wowlan)
13323 return -EOPNOTSUPP;
13324
13325 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13326 cfg80211_rdev_free_wowlan(rdev);
13327 rdev->wiphy.wowlan_config = NULL;
13328 goto set_wakeup;
13329 }
13330
13331 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13332 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13333 nl80211_wowlan_policy, info->extack);
13334 if (err)
13335 return err;
13336
13337 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13338 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13339 return -EINVAL;
13340 new_triggers.any = true;
13341 }
13342
13343 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13344 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13345 return -EINVAL;
13346 new_triggers.disconnect = true;
13347 regular = true;
13348 }
13349
13350 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13351 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13352 return -EINVAL;
13353 new_triggers.magic_pkt = true;
13354 regular = true;
13355 }
13356
13357 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13358 return -EINVAL;
13359
13360 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13361 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13362 return -EINVAL;
13363 new_triggers.gtk_rekey_failure = true;
13364 regular = true;
13365 }
13366
13367 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13368 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13369 return -EINVAL;
13370 new_triggers.eap_identity_req = true;
13371 regular = true;
13372 }
13373
13374 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13375 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13376 return -EINVAL;
13377 new_triggers.four_way_handshake = true;
13378 regular = true;
13379 }
13380
13381 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13382 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13383 return -EINVAL;
13384 new_triggers.rfkill_release = true;
13385 regular = true;
13386 }
13387
13388 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13389 struct nlattr *pat;
13390 int n_patterns = 0;
13391 int rem, pat_len, mask_len, pkt_offset;
13392 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13393
13394 regular = true;
13395
13396 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13397 rem)
13398 n_patterns++;
13399 if (n_patterns > wowlan->n_patterns)
13400 return -EINVAL;
13401
13402 new_triggers.patterns = kcalloc(n_patterns,
13403 sizeof(new_triggers.patterns[0]),
13404 GFP_KERNEL);
13405 if (!new_triggers.patterns)
13406 return -ENOMEM;
13407
13408 new_triggers.n_patterns = n_patterns;
13409 i = 0;
13410
13411 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13412 rem) {
13413 u8 *mask_pat;
13414
13415 err = nla_parse_nested_deprecated(pat_tb,
13416 MAX_NL80211_PKTPAT,
13417 pat,
13418 nl80211_packet_pattern_policy,
13419 info->extack);
13420 if (err)
13421 goto error;
13422
13423 err = -EINVAL;
13424 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13425 !pat_tb[NL80211_PKTPAT_PATTERN])
13426 goto error;
13427 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13428 mask_len = DIV_ROUND_UP(pat_len, 8);
13429 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13430 goto error;
13431 if (pat_len > wowlan->pattern_max_len ||
13432 pat_len < wowlan->pattern_min_len)
13433 goto error;
13434
13435 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13436 pkt_offset = 0;
13437 else
13438 pkt_offset = nla_get_u32(
13439 pat_tb[NL80211_PKTPAT_OFFSET]);
13440 if (pkt_offset > wowlan->max_pkt_offset)
13441 goto error;
13442 new_triggers.patterns[i].pkt_offset = pkt_offset;
13443
13444 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13445 if (!mask_pat) {
13446 err = -ENOMEM;
13447 goto error;
13448 }
13449 new_triggers.patterns[i].mask = mask_pat;
13450 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13451 mask_len);
13452 mask_pat += mask_len;
13453 new_triggers.patterns[i].pattern = mask_pat;
13454 new_triggers.patterns[i].pattern_len = pat_len;
13455 memcpy(mask_pat,
13456 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13457 pat_len);
13458 i++;
13459 }
13460 }
13461
13462 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13463 regular = true;
13464 err = nl80211_parse_wowlan_tcp(
13465 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13466 &new_triggers);
13467 if (err)
13468 goto error;
13469 }
13470
13471 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13472 regular = true;
13473 err = nl80211_parse_wowlan_nd(
13474 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13475 &new_triggers);
13476 if (err)
13477 goto error;
13478 }
13479
13480 /* The 'any' trigger means the device continues operating more or less
13481 * as in its normal operation mode and wakes up the host on most of the
13482 * normal interrupts (like packet RX, ...)
13483 * It therefore makes little sense to combine with the more constrained
13484 * wakeup trigger modes.
13485 */
13486 if (new_triggers.any && regular) {
13487 err = -EINVAL;
13488 goto error;
13489 }
13490
13491 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13492 if (!ntrig) {
13493 err = -ENOMEM;
13494 goto error;
13495 }
13496 cfg80211_rdev_free_wowlan(rdev);
13497 rdev->wiphy.wowlan_config = ntrig;
13498
13499 set_wakeup:
13500 if (rdev->ops->set_wakeup &&
13501 prev_enabled != !!rdev->wiphy.wowlan_config)
13502 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13503
13504 return 0;
13505 error:
13506 for (i = 0; i < new_triggers.n_patterns; i++)
13507 kfree(new_triggers.patterns[i].mask);
13508 kfree(new_triggers.patterns);
13509 if (new_triggers.tcp && new_triggers.tcp->sock)
13510 sock_release(new_triggers.tcp->sock);
13511 kfree(new_triggers.tcp);
13512 kfree(new_triggers.nd_config);
13513 return err;
13514 }
13515 #endif
13516
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)13517 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13518 struct cfg80211_registered_device *rdev)
13519 {
13520 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13521 int i, j, pat_len;
13522 struct cfg80211_coalesce_rules *rule;
13523
13524 if (!rdev->coalesce->n_rules)
13525 return 0;
13526
13527 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13528 if (!nl_rules)
13529 return -ENOBUFS;
13530
13531 for (i = 0; i < rdev->coalesce->n_rules; i++) {
13532 nl_rule = nla_nest_start_noflag(msg, i + 1);
13533 if (!nl_rule)
13534 return -ENOBUFS;
13535
13536 rule = &rdev->coalesce->rules[i];
13537 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13538 rule->delay))
13539 return -ENOBUFS;
13540
13541 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13542 rule->condition))
13543 return -ENOBUFS;
13544
13545 nl_pats = nla_nest_start_noflag(msg,
13546 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13547 if (!nl_pats)
13548 return -ENOBUFS;
13549
13550 for (j = 0; j < rule->n_patterns; j++) {
13551 nl_pat = nla_nest_start_noflag(msg, j + 1);
13552 if (!nl_pat)
13553 return -ENOBUFS;
13554 pat_len = rule->patterns[j].pattern_len;
13555 if (nla_put(msg, NL80211_PKTPAT_MASK,
13556 DIV_ROUND_UP(pat_len, 8),
13557 rule->patterns[j].mask) ||
13558 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13559 rule->patterns[j].pattern) ||
13560 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13561 rule->patterns[j].pkt_offset))
13562 return -ENOBUFS;
13563 nla_nest_end(msg, nl_pat);
13564 }
13565 nla_nest_end(msg, nl_pats);
13566 nla_nest_end(msg, nl_rule);
13567 }
13568 nla_nest_end(msg, nl_rules);
13569
13570 return 0;
13571 }
13572
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)13573 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13574 {
13575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13576 struct sk_buff *msg;
13577 void *hdr;
13578
13579 if (!rdev->wiphy.coalesce)
13580 return -EOPNOTSUPP;
13581
13582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13583 if (!msg)
13584 return -ENOMEM;
13585
13586 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13587 NL80211_CMD_GET_COALESCE);
13588 if (!hdr)
13589 goto nla_put_failure;
13590
13591 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13592 goto nla_put_failure;
13593
13594 genlmsg_end(msg, hdr);
13595 return genlmsg_reply(msg, info);
13596
13597 nla_put_failure:
13598 nlmsg_free(msg);
13599 return -ENOBUFS;
13600 }
13601
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)13602 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13603 {
13604 struct cfg80211_coalesce *coalesce = rdev->coalesce;
13605 int i, j;
13606 struct cfg80211_coalesce_rules *rule;
13607
13608 if (!coalesce)
13609 return;
13610
13611 for (i = 0; i < coalesce->n_rules; i++) {
13612 rule = &coalesce->rules[i];
13613 for (j = 0; j < rule->n_patterns; j++)
13614 kfree(rule->patterns[j].mask);
13615 kfree(rule->patterns);
13616 }
13617 kfree(coalesce->rules);
13618 kfree(coalesce);
13619 rdev->coalesce = NULL;
13620 }
13621
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)13622 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13623 struct nlattr *rule,
13624 struct cfg80211_coalesce_rules *new_rule)
13625 {
13626 int err, i;
13627 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13628 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13629 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13630 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13631
13632 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13633 rule, nl80211_coalesce_policy, NULL);
13634 if (err)
13635 return err;
13636
13637 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13638 new_rule->delay =
13639 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13640 if (new_rule->delay > coalesce->max_delay)
13641 return -EINVAL;
13642
13643 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13644 new_rule->condition =
13645 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13646
13647 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13648 return -EINVAL;
13649
13650 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13651 rem)
13652 n_patterns++;
13653 if (n_patterns > coalesce->n_patterns)
13654 return -EINVAL;
13655
13656 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13657 GFP_KERNEL);
13658 if (!new_rule->patterns)
13659 return -ENOMEM;
13660
13661 new_rule->n_patterns = n_patterns;
13662 i = 0;
13663
13664 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13665 rem) {
13666 u8 *mask_pat;
13667
13668 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13669 pat,
13670 nl80211_packet_pattern_policy,
13671 NULL);
13672 if (err)
13673 return err;
13674
13675 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13676 !pat_tb[NL80211_PKTPAT_PATTERN])
13677 return -EINVAL;
13678 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13679 mask_len = DIV_ROUND_UP(pat_len, 8);
13680 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13681 return -EINVAL;
13682 if (pat_len > coalesce->pattern_max_len ||
13683 pat_len < coalesce->pattern_min_len)
13684 return -EINVAL;
13685
13686 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13687 pkt_offset = 0;
13688 else
13689 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13690 if (pkt_offset > coalesce->max_pkt_offset)
13691 return -EINVAL;
13692 new_rule->patterns[i].pkt_offset = pkt_offset;
13693
13694 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13695 if (!mask_pat)
13696 return -ENOMEM;
13697
13698 new_rule->patterns[i].mask = mask_pat;
13699 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13700 mask_len);
13701
13702 mask_pat += mask_len;
13703 new_rule->patterns[i].pattern = mask_pat;
13704 new_rule->patterns[i].pattern_len = pat_len;
13705 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13706 pat_len);
13707 i++;
13708 }
13709
13710 return 0;
13711 }
13712
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)13713 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13714 {
13715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13716 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13717 struct cfg80211_coalesce new_coalesce = {};
13718 struct cfg80211_coalesce *n_coalesce;
13719 int err, rem_rule, n_rules = 0, i, j;
13720 struct nlattr *rule;
13721 struct cfg80211_coalesce_rules *tmp_rule;
13722
13723 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13724 return -EOPNOTSUPP;
13725
13726 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13727 cfg80211_rdev_free_coalesce(rdev);
13728 rdev_set_coalesce(rdev, NULL);
13729 return 0;
13730 }
13731
13732 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13733 rem_rule)
13734 n_rules++;
13735 if (n_rules > coalesce->n_rules)
13736 return -EINVAL;
13737
13738 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13739 GFP_KERNEL);
13740 if (!new_coalesce.rules)
13741 return -ENOMEM;
13742
13743 new_coalesce.n_rules = n_rules;
13744 i = 0;
13745
13746 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13747 rem_rule) {
13748 err = nl80211_parse_coalesce_rule(rdev, rule,
13749 &new_coalesce.rules[i]);
13750 if (err)
13751 goto error;
13752
13753 i++;
13754 }
13755
13756 err = rdev_set_coalesce(rdev, &new_coalesce);
13757 if (err)
13758 goto error;
13759
13760 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13761 if (!n_coalesce) {
13762 err = -ENOMEM;
13763 goto error;
13764 }
13765 cfg80211_rdev_free_coalesce(rdev);
13766 rdev->coalesce = n_coalesce;
13767
13768 return 0;
13769 error:
13770 for (i = 0; i < new_coalesce.n_rules; i++) {
13771 tmp_rule = &new_coalesce.rules[i];
13772 for (j = 0; j < tmp_rule->n_patterns; j++)
13773 kfree(tmp_rule->patterns[j].mask);
13774 kfree(tmp_rule->patterns);
13775 }
13776 kfree(new_coalesce.rules);
13777
13778 return err;
13779 }
13780
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)13781 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13782 {
13783 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13784 struct net_device *dev = info->user_ptr[1];
13785 struct wireless_dev *wdev = dev->ieee80211_ptr;
13786 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13787 struct cfg80211_gtk_rekey_data rekey_data = {};
13788 int err;
13789
13790 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13791 return -EINVAL;
13792
13793 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13794 info->attrs[NL80211_ATTR_REKEY_DATA],
13795 nl80211_rekey_policy, info->extack);
13796 if (err)
13797 return err;
13798
13799 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13800 !tb[NL80211_REKEY_DATA_KCK])
13801 return -EINVAL;
13802 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13803 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13804 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13805 return -ERANGE;
13806 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13807 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13808 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
13809 return -ERANGE;
13810
13811 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13812 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13813 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13814 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13815 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13816 if (tb[NL80211_REKEY_DATA_AKM])
13817 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13818
13819 wdev_lock(wdev);
13820 if (!wdev->connected) {
13821 err = -ENOTCONN;
13822 goto out;
13823 }
13824
13825 if (!rdev->ops->set_rekey_data) {
13826 err = -EOPNOTSUPP;
13827 goto out;
13828 }
13829
13830 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13831 out:
13832 wdev_unlock(wdev);
13833 return err;
13834 }
13835
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)13836 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13837 struct genl_info *info)
13838 {
13839 struct net_device *dev = info->user_ptr[1];
13840 struct wireless_dev *wdev = dev->ieee80211_ptr;
13841
13842 if (wdev->iftype != NL80211_IFTYPE_AP &&
13843 wdev->iftype != NL80211_IFTYPE_P2P_GO)
13844 return -EINVAL;
13845
13846 if (wdev->ap_unexpected_nlportid)
13847 return -EBUSY;
13848
13849 wdev->ap_unexpected_nlportid = info->snd_portid;
13850 return 0;
13851 }
13852
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)13853 static int nl80211_probe_client(struct sk_buff *skb,
13854 struct genl_info *info)
13855 {
13856 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13857 struct net_device *dev = info->user_ptr[1];
13858 struct wireless_dev *wdev = dev->ieee80211_ptr;
13859 struct sk_buff *msg;
13860 void *hdr;
13861 const u8 *addr;
13862 u64 cookie;
13863 int err;
13864
13865 if (wdev->iftype != NL80211_IFTYPE_AP &&
13866 wdev->iftype != NL80211_IFTYPE_P2P_GO)
13867 return -EOPNOTSUPP;
13868
13869 if (!info->attrs[NL80211_ATTR_MAC])
13870 return -EINVAL;
13871
13872 if (!rdev->ops->probe_client)
13873 return -EOPNOTSUPP;
13874
13875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13876 if (!msg)
13877 return -ENOMEM;
13878
13879 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13880 NL80211_CMD_PROBE_CLIENT);
13881 if (!hdr) {
13882 err = -ENOBUFS;
13883 goto free_msg;
13884 }
13885
13886 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13887
13888 err = rdev_probe_client(rdev, dev, addr, &cookie);
13889 if (err)
13890 goto free_msg;
13891
13892 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13893 NL80211_ATTR_PAD))
13894 goto nla_put_failure;
13895
13896 genlmsg_end(msg, hdr);
13897
13898 return genlmsg_reply(msg, info);
13899
13900 nla_put_failure:
13901 err = -ENOBUFS;
13902 free_msg:
13903 nlmsg_free(msg);
13904 return err;
13905 }
13906
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)13907 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13908 {
13909 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13910 struct cfg80211_beacon_registration *reg, *nreg;
13911 int rv;
13912
13913 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13914 return -EOPNOTSUPP;
13915
13916 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13917 if (!nreg)
13918 return -ENOMEM;
13919
13920 /* First, check if already registered. */
13921 spin_lock_bh(&rdev->beacon_registrations_lock);
13922 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13923 if (reg->nlportid == info->snd_portid) {
13924 rv = -EALREADY;
13925 goto out_err;
13926 }
13927 }
13928 /* Add it to the list */
13929 nreg->nlportid = info->snd_portid;
13930 list_add(&nreg->list, &rdev->beacon_registrations);
13931
13932 spin_unlock_bh(&rdev->beacon_registrations_lock);
13933
13934 return 0;
13935 out_err:
13936 spin_unlock_bh(&rdev->beacon_registrations_lock);
13937 kfree(nreg);
13938 return rv;
13939 }
13940
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)13941 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13942 {
13943 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13944 struct wireless_dev *wdev = info->user_ptr[1];
13945 int err;
13946
13947 if (!rdev->ops->start_p2p_device)
13948 return -EOPNOTSUPP;
13949
13950 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13951 return -EOPNOTSUPP;
13952
13953 if (wdev_running(wdev))
13954 return 0;
13955
13956 if (rfkill_blocked(rdev->wiphy.rfkill))
13957 return -ERFKILL;
13958
13959 err = rdev_start_p2p_device(rdev, wdev);
13960 if (err)
13961 return err;
13962
13963 wdev->is_running = true;
13964 rdev->opencount++;
13965
13966 return 0;
13967 }
13968
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)13969 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13970 {
13971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13972 struct wireless_dev *wdev = info->user_ptr[1];
13973
13974 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13975 return -EOPNOTSUPP;
13976
13977 if (!rdev->ops->stop_p2p_device)
13978 return -EOPNOTSUPP;
13979
13980 cfg80211_stop_p2p_device(rdev, wdev);
13981
13982 return 0;
13983 }
13984
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)13985 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13986 {
13987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13988 struct wireless_dev *wdev = info->user_ptr[1];
13989 struct cfg80211_nan_conf conf = {};
13990 int err;
13991
13992 if (wdev->iftype != NL80211_IFTYPE_NAN)
13993 return -EOPNOTSUPP;
13994
13995 if (wdev_running(wdev))
13996 return -EEXIST;
13997
13998 if (rfkill_blocked(rdev->wiphy.rfkill))
13999 return -ERFKILL;
14000
14001 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14002 return -EINVAL;
14003
14004 conf.master_pref =
14005 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14006
14007 if (info->attrs[NL80211_ATTR_BANDS]) {
14008 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14009
14010 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14011 return -EOPNOTSUPP;
14012
14013 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14014 return -EINVAL;
14015
14016 conf.bands = bands;
14017 }
14018
14019 err = rdev_start_nan(rdev, wdev, &conf);
14020 if (err)
14021 return err;
14022
14023 wdev->is_running = true;
14024 rdev->opencount++;
14025
14026 return 0;
14027 }
14028
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)14029 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14030 {
14031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14032 struct wireless_dev *wdev = info->user_ptr[1];
14033
14034 if (wdev->iftype != NL80211_IFTYPE_NAN)
14035 return -EOPNOTSUPP;
14036
14037 cfg80211_stop_nan(rdev, wdev);
14038
14039 return 0;
14040 }
14041
validate_nan_filter(struct nlattr * filter_attr)14042 static int validate_nan_filter(struct nlattr *filter_attr)
14043 {
14044 struct nlattr *attr;
14045 int len = 0, n_entries = 0, rem;
14046
14047 nla_for_each_nested(attr, filter_attr, rem) {
14048 len += nla_len(attr);
14049 n_entries++;
14050 }
14051
14052 if (len >= U8_MAX)
14053 return -EINVAL;
14054
14055 return n_entries;
14056 }
14057
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)14058 static int handle_nan_filter(struct nlattr *attr_filter,
14059 struct cfg80211_nan_func *func,
14060 bool tx)
14061 {
14062 struct nlattr *attr;
14063 int n_entries, rem, i;
14064 struct cfg80211_nan_func_filter *filter;
14065
14066 n_entries = validate_nan_filter(attr_filter);
14067 if (n_entries < 0)
14068 return n_entries;
14069
14070 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14071
14072 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14073 if (!filter)
14074 return -ENOMEM;
14075
14076 i = 0;
14077 nla_for_each_nested(attr, attr_filter, rem) {
14078 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14079 if (!filter[i].filter)
14080 goto err;
14081
14082 filter[i].len = nla_len(attr);
14083 i++;
14084 }
14085 if (tx) {
14086 func->num_tx_filters = n_entries;
14087 func->tx_filters = filter;
14088 } else {
14089 func->num_rx_filters = n_entries;
14090 func->rx_filters = filter;
14091 }
14092
14093 return 0;
14094
14095 err:
14096 i = 0;
14097 nla_for_each_nested(attr, attr_filter, rem) {
14098 kfree(filter[i].filter);
14099 i++;
14100 }
14101 kfree(filter);
14102 return -ENOMEM;
14103 }
14104
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)14105 static int nl80211_nan_add_func(struct sk_buff *skb,
14106 struct genl_info *info)
14107 {
14108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14109 struct wireless_dev *wdev = info->user_ptr[1];
14110 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14111 struct cfg80211_nan_func *func;
14112 struct sk_buff *msg = NULL;
14113 void *hdr = NULL;
14114 int err = 0;
14115
14116 if (wdev->iftype != NL80211_IFTYPE_NAN)
14117 return -EOPNOTSUPP;
14118
14119 if (!wdev_running(wdev))
14120 return -ENOTCONN;
14121
14122 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14123 return -EINVAL;
14124
14125 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14126 info->attrs[NL80211_ATTR_NAN_FUNC],
14127 nl80211_nan_func_policy,
14128 info->extack);
14129 if (err)
14130 return err;
14131
14132 func = kzalloc(sizeof(*func), GFP_KERNEL);
14133 if (!func)
14134 return -ENOMEM;
14135
14136 func->cookie = cfg80211_assign_cookie(rdev);
14137
14138 if (!tb[NL80211_NAN_FUNC_TYPE]) {
14139 err = -EINVAL;
14140 goto out;
14141 }
14142
14143
14144 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14145
14146 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14147 err = -EINVAL;
14148 goto out;
14149 }
14150
14151 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14152 sizeof(func->service_id));
14153
14154 func->close_range =
14155 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14156
14157 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14158 func->serv_spec_info_len =
14159 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14160 func->serv_spec_info =
14161 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14162 func->serv_spec_info_len,
14163 GFP_KERNEL);
14164 if (!func->serv_spec_info) {
14165 err = -ENOMEM;
14166 goto out;
14167 }
14168 }
14169
14170 if (tb[NL80211_NAN_FUNC_TTL])
14171 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14172
14173 switch (func->type) {
14174 case NL80211_NAN_FUNC_PUBLISH:
14175 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14176 err = -EINVAL;
14177 goto out;
14178 }
14179
14180 func->publish_type =
14181 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14182 func->publish_bcast =
14183 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14184
14185 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14186 func->publish_bcast) {
14187 err = -EINVAL;
14188 goto out;
14189 }
14190 break;
14191 case NL80211_NAN_FUNC_SUBSCRIBE:
14192 func->subscribe_active =
14193 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14194 break;
14195 case NL80211_NAN_FUNC_FOLLOW_UP:
14196 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14197 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14198 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14199 err = -EINVAL;
14200 goto out;
14201 }
14202
14203 func->followup_id =
14204 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14205 func->followup_reqid =
14206 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14207 memcpy(func->followup_dest.addr,
14208 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14209 sizeof(func->followup_dest.addr));
14210 if (func->ttl) {
14211 err = -EINVAL;
14212 goto out;
14213 }
14214 break;
14215 default:
14216 err = -EINVAL;
14217 goto out;
14218 }
14219
14220 if (tb[NL80211_NAN_FUNC_SRF]) {
14221 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14222
14223 err = nla_parse_nested_deprecated(srf_tb,
14224 NL80211_NAN_SRF_ATTR_MAX,
14225 tb[NL80211_NAN_FUNC_SRF],
14226 nl80211_nan_srf_policy,
14227 info->extack);
14228 if (err)
14229 goto out;
14230
14231 func->srf_include =
14232 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14233
14234 if (srf_tb[NL80211_NAN_SRF_BF]) {
14235 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14236 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14237 err = -EINVAL;
14238 goto out;
14239 }
14240
14241 func->srf_bf_len =
14242 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14243 func->srf_bf =
14244 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14245 func->srf_bf_len, GFP_KERNEL);
14246 if (!func->srf_bf) {
14247 err = -ENOMEM;
14248 goto out;
14249 }
14250
14251 func->srf_bf_idx =
14252 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14253 } else {
14254 struct nlattr *attr, *mac_attr =
14255 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14256 int n_entries, rem, i = 0;
14257
14258 if (!mac_attr) {
14259 err = -EINVAL;
14260 goto out;
14261 }
14262
14263 n_entries = validate_acl_mac_addrs(mac_attr);
14264 if (n_entries <= 0) {
14265 err = -EINVAL;
14266 goto out;
14267 }
14268
14269 func->srf_num_macs = n_entries;
14270 func->srf_macs =
14271 kcalloc(n_entries, sizeof(*func->srf_macs),
14272 GFP_KERNEL);
14273 if (!func->srf_macs) {
14274 err = -ENOMEM;
14275 goto out;
14276 }
14277
14278 nla_for_each_nested(attr, mac_attr, rem)
14279 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14280 sizeof(*func->srf_macs));
14281 }
14282 }
14283
14284 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14285 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14286 func, true);
14287 if (err)
14288 goto out;
14289 }
14290
14291 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14292 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14293 func, false);
14294 if (err)
14295 goto out;
14296 }
14297
14298 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14299 if (!msg) {
14300 err = -ENOMEM;
14301 goto out;
14302 }
14303
14304 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14305 NL80211_CMD_ADD_NAN_FUNCTION);
14306 /* This can't really happen - we just allocated 4KB */
14307 if (WARN_ON(!hdr)) {
14308 err = -ENOMEM;
14309 goto out;
14310 }
14311
14312 err = rdev_add_nan_func(rdev, wdev, func);
14313 out:
14314 if (err < 0) {
14315 cfg80211_free_nan_func(func);
14316 nlmsg_free(msg);
14317 return err;
14318 }
14319
14320 /* propagate the instance id and cookie to userspace */
14321 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14322 NL80211_ATTR_PAD))
14323 goto nla_put_failure;
14324
14325 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14326 if (!func_attr)
14327 goto nla_put_failure;
14328
14329 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14330 func->instance_id))
14331 goto nla_put_failure;
14332
14333 nla_nest_end(msg, func_attr);
14334
14335 genlmsg_end(msg, hdr);
14336 return genlmsg_reply(msg, info);
14337
14338 nla_put_failure:
14339 nlmsg_free(msg);
14340 return -ENOBUFS;
14341 }
14342
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)14343 static int nl80211_nan_del_func(struct sk_buff *skb,
14344 struct genl_info *info)
14345 {
14346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14347 struct wireless_dev *wdev = info->user_ptr[1];
14348 u64 cookie;
14349
14350 if (wdev->iftype != NL80211_IFTYPE_NAN)
14351 return -EOPNOTSUPP;
14352
14353 if (!wdev_running(wdev))
14354 return -ENOTCONN;
14355
14356 if (!info->attrs[NL80211_ATTR_COOKIE])
14357 return -EINVAL;
14358
14359 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14360
14361 rdev_del_nan_func(rdev, wdev, cookie);
14362
14363 return 0;
14364 }
14365
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)14366 static int nl80211_nan_change_config(struct sk_buff *skb,
14367 struct genl_info *info)
14368 {
14369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14370 struct wireless_dev *wdev = info->user_ptr[1];
14371 struct cfg80211_nan_conf conf = {};
14372 u32 changed = 0;
14373
14374 if (wdev->iftype != NL80211_IFTYPE_NAN)
14375 return -EOPNOTSUPP;
14376
14377 if (!wdev_running(wdev))
14378 return -ENOTCONN;
14379
14380 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14381 conf.master_pref =
14382 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14383 if (conf.master_pref <= 1 || conf.master_pref == 255)
14384 return -EINVAL;
14385
14386 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14387 }
14388
14389 if (info->attrs[NL80211_ATTR_BANDS]) {
14390 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14391
14392 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14393 return -EOPNOTSUPP;
14394
14395 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14396 return -EINVAL;
14397
14398 conf.bands = bands;
14399 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14400 }
14401
14402 if (!changed)
14403 return -EINVAL;
14404
14405 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14406 }
14407
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)14408 void cfg80211_nan_match(struct wireless_dev *wdev,
14409 struct cfg80211_nan_match_params *match, gfp_t gfp)
14410 {
14411 struct wiphy *wiphy = wdev->wiphy;
14412 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14413 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14414 struct sk_buff *msg;
14415 void *hdr;
14416
14417 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14418 return;
14419
14420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14421 if (!msg)
14422 return;
14423
14424 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14425 if (!hdr) {
14426 nlmsg_free(msg);
14427 return;
14428 }
14429
14430 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14431 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14432 wdev->netdev->ifindex)) ||
14433 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14434 NL80211_ATTR_PAD))
14435 goto nla_put_failure;
14436
14437 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14438 NL80211_ATTR_PAD) ||
14439 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14440 goto nla_put_failure;
14441
14442 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14443 if (!match_attr)
14444 goto nla_put_failure;
14445
14446 local_func_attr = nla_nest_start_noflag(msg,
14447 NL80211_NAN_MATCH_FUNC_LOCAL);
14448 if (!local_func_attr)
14449 goto nla_put_failure;
14450
14451 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14452 goto nla_put_failure;
14453
14454 nla_nest_end(msg, local_func_attr);
14455
14456 peer_func_attr = nla_nest_start_noflag(msg,
14457 NL80211_NAN_MATCH_FUNC_PEER);
14458 if (!peer_func_attr)
14459 goto nla_put_failure;
14460
14461 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14462 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14463 goto nla_put_failure;
14464
14465 if (match->info && match->info_len &&
14466 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14467 match->info))
14468 goto nla_put_failure;
14469
14470 nla_nest_end(msg, peer_func_attr);
14471 nla_nest_end(msg, match_attr);
14472 genlmsg_end(msg, hdr);
14473
14474 if (!wdev->owner_nlportid)
14475 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14476 msg, 0, NL80211_MCGRP_NAN, gfp);
14477 else
14478 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14479 wdev->owner_nlportid);
14480
14481 return;
14482
14483 nla_put_failure:
14484 nlmsg_free(msg);
14485 }
14486 EXPORT_SYMBOL(cfg80211_nan_match);
14487
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)14488 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14489 u8 inst_id,
14490 enum nl80211_nan_func_term_reason reason,
14491 u64 cookie, gfp_t gfp)
14492 {
14493 struct wiphy *wiphy = wdev->wiphy;
14494 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14495 struct sk_buff *msg;
14496 struct nlattr *func_attr;
14497 void *hdr;
14498
14499 if (WARN_ON(!inst_id))
14500 return;
14501
14502 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14503 if (!msg)
14504 return;
14505
14506 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14507 if (!hdr) {
14508 nlmsg_free(msg);
14509 return;
14510 }
14511
14512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14513 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14514 wdev->netdev->ifindex)) ||
14515 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14516 NL80211_ATTR_PAD))
14517 goto nla_put_failure;
14518
14519 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14520 NL80211_ATTR_PAD))
14521 goto nla_put_failure;
14522
14523 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14524 if (!func_attr)
14525 goto nla_put_failure;
14526
14527 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14528 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14529 goto nla_put_failure;
14530
14531 nla_nest_end(msg, func_attr);
14532 genlmsg_end(msg, hdr);
14533
14534 if (!wdev->owner_nlportid)
14535 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14536 msg, 0, NL80211_MCGRP_NAN, gfp);
14537 else
14538 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14539 wdev->owner_nlportid);
14540
14541 return;
14542
14543 nla_put_failure:
14544 nlmsg_free(msg);
14545 }
14546 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14547
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)14548 static int nl80211_get_protocol_features(struct sk_buff *skb,
14549 struct genl_info *info)
14550 {
14551 void *hdr;
14552 struct sk_buff *msg;
14553
14554 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14555 if (!msg)
14556 return -ENOMEM;
14557
14558 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14559 NL80211_CMD_GET_PROTOCOL_FEATURES);
14560 if (!hdr)
14561 goto nla_put_failure;
14562
14563 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14564 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14565 goto nla_put_failure;
14566
14567 genlmsg_end(msg, hdr);
14568 return genlmsg_reply(msg, info);
14569
14570 nla_put_failure:
14571 kfree_skb(msg);
14572 return -ENOBUFS;
14573 }
14574
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)14575 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14576 {
14577 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14578 struct cfg80211_update_ft_ies_params ft_params;
14579 struct net_device *dev = info->user_ptr[1];
14580
14581 if (!rdev->ops->update_ft_ies)
14582 return -EOPNOTSUPP;
14583
14584 if (!info->attrs[NL80211_ATTR_MDID] ||
14585 !info->attrs[NL80211_ATTR_IE])
14586 return -EINVAL;
14587
14588 memset(&ft_params, 0, sizeof(ft_params));
14589 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14590 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14591 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14592
14593 return rdev_update_ft_ies(rdev, dev, &ft_params);
14594 }
14595
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)14596 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14597 struct genl_info *info)
14598 {
14599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14600 struct wireless_dev *wdev = info->user_ptr[1];
14601 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14602 u16 duration;
14603 int ret;
14604
14605 if (!rdev->ops->crit_proto_start)
14606 return -EOPNOTSUPP;
14607
14608 if (WARN_ON(!rdev->ops->crit_proto_stop))
14609 return -EINVAL;
14610
14611 if (rdev->crit_proto_nlportid)
14612 return -EBUSY;
14613
14614 /* determine protocol if provided */
14615 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14616 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14617
14618 if (proto >= NUM_NL80211_CRIT_PROTO)
14619 return -EINVAL;
14620
14621 /* timeout must be provided */
14622 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14623 return -EINVAL;
14624
14625 duration =
14626 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14627
14628 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14629 if (!ret)
14630 rdev->crit_proto_nlportid = info->snd_portid;
14631
14632 return ret;
14633 }
14634
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)14635 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14636 struct genl_info *info)
14637 {
14638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14639 struct wireless_dev *wdev = info->user_ptr[1];
14640
14641 if (!rdev->ops->crit_proto_stop)
14642 return -EOPNOTSUPP;
14643
14644 if (rdev->crit_proto_nlportid) {
14645 rdev->crit_proto_nlportid = 0;
14646 rdev_crit_proto_stop(rdev, wdev);
14647 }
14648 return 0;
14649 }
14650
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)14651 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14652 struct nlattr *attr,
14653 struct netlink_ext_ack *extack)
14654 {
14655 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14656 if (attr->nla_type & NLA_F_NESTED) {
14657 NL_SET_ERR_MSG_ATTR(extack, attr,
14658 "unexpected nested data");
14659 return -EINVAL;
14660 }
14661
14662 return 0;
14663 }
14664
14665 if (!(attr->nla_type & NLA_F_NESTED)) {
14666 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14667 return -EINVAL;
14668 }
14669
14670 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14671 }
14672
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)14673 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14674 {
14675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14676 struct wireless_dev *wdev =
14677 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14678 info->attrs);
14679 int i, err;
14680 u32 vid, subcmd;
14681
14682 if (!rdev->wiphy.vendor_commands)
14683 return -EOPNOTSUPP;
14684
14685 if (IS_ERR(wdev)) {
14686 err = PTR_ERR(wdev);
14687 if (err != -EINVAL)
14688 return err;
14689 wdev = NULL;
14690 } else if (wdev->wiphy != &rdev->wiphy) {
14691 return -EINVAL;
14692 }
14693
14694 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14695 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14696 return -EINVAL;
14697
14698 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14699 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14700 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14701 const struct wiphy_vendor_command *vcmd;
14702 void *data = NULL;
14703 int len = 0;
14704
14705 vcmd = &rdev->wiphy.vendor_commands[i];
14706
14707 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14708 continue;
14709
14710 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14711 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14712 if (!wdev)
14713 return -EINVAL;
14714 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14715 !wdev->netdev)
14716 return -EINVAL;
14717
14718 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14719 if (!wdev_running(wdev))
14720 return -ENETDOWN;
14721 }
14722 } else {
14723 wdev = NULL;
14724 }
14725
14726 if (!vcmd->doit)
14727 return -EOPNOTSUPP;
14728
14729 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14730 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14731 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14732
14733 err = nl80211_vendor_check_policy(vcmd,
14734 info->attrs[NL80211_ATTR_VENDOR_DATA],
14735 info->extack);
14736 if (err)
14737 return err;
14738 }
14739
14740 rdev->cur_cmd_info = info;
14741 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14742 rdev->cur_cmd_info = NULL;
14743 return err;
14744 }
14745
14746 return -EOPNOTSUPP;
14747 }
14748
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)14749 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14750 struct netlink_callback *cb,
14751 struct cfg80211_registered_device **rdev,
14752 struct wireless_dev **wdev)
14753 {
14754 struct nlattr **attrbuf;
14755 u32 vid, subcmd;
14756 unsigned int i;
14757 int vcmd_idx = -1;
14758 int err;
14759 void *data = NULL;
14760 unsigned int data_len = 0;
14761
14762 if (cb->args[0]) {
14763 /* subtract the 1 again here */
14764 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14765 struct wireless_dev *tmp;
14766
14767 if (!wiphy)
14768 return -ENODEV;
14769 *rdev = wiphy_to_rdev(wiphy);
14770 *wdev = NULL;
14771
14772 if (cb->args[1]) {
14773 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14774 if (tmp->identifier == cb->args[1] - 1) {
14775 *wdev = tmp;
14776 break;
14777 }
14778 }
14779 }
14780
14781 /* keep rtnl locked in successful case */
14782 return 0;
14783 }
14784
14785 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14786 if (!attrbuf)
14787 return -ENOMEM;
14788
14789 err = nlmsg_parse_deprecated(cb->nlh,
14790 GENL_HDRLEN + nl80211_fam.hdrsize,
14791 attrbuf, nl80211_fam.maxattr,
14792 nl80211_policy, NULL);
14793 if (err)
14794 goto out;
14795
14796 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14797 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14798 err = -EINVAL;
14799 goto out;
14800 }
14801
14802 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14803 if (IS_ERR(*wdev))
14804 *wdev = NULL;
14805
14806 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14807 if (IS_ERR(*rdev)) {
14808 err = PTR_ERR(*rdev);
14809 goto out;
14810 }
14811
14812 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14813 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14814
14815 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14816 const struct wiphy_vendor_command *vcmd;
14817
14818 vcmd = &(*rdev)->wiphy.vendor_commands[i];
14819
14820 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14821 continue;
14822
14823 if (!vcmd->dumpit) {
14824 err = -EOPNOTSUPP;
14825 goto out;
14826 }
14827
14828 vcmd_idx = i;
14829 break;
14830 }
14831
14832 if (vcmd_idx < 0) {
14833 err = -EOPNOTSUPP;
14834 goto out;
14835 }
14836
14837 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14838 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14839 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14840
14841 err = nl80211_vendor_check_policy(
14842 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14843 attrbuf[NL80211_ATTR_VENDOR_DATA],
14844 cb->extack);
14845 if (err)
14846 goto out;
14847 }
14848
14849 /* 0 is the first index - add 1 to parse only once */
14850 cb->args[0] = (*rdev)->wiphy_idx + 1;
14851 /* add 1 to know if it was NULL */
14852 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14853 cb->args[2] = vcmd_idx;
14854 cb->args[3] = (unsigned long)data;
14855 cb->args[4] = data_len;
14856
14857 /* keep rtnl locked in successful case */
14858 err = 0;
14859 out:
14860 kfree(attrbuf);
14861 return err;
14862 }
14863
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)14864 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14865 struct netlink_callback *cb)
14866 {
14867 struct cfg80211_registered_device *rdev;
14868 struct wireless_dev *wdev;
14869 unsigned int vcmd_idx;
14870 const struct wiphy_vendor_command *vcmd;
14871 void *data;
14872 int data_len;
14873 int err;
14874 struct nlattr *vendor_data;
14875
14876 rtnl_lock();
14877 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14878 if (err)
14879 goto out;
14880
14881 vcmd_idx = cb->args[2];
14882 data = (void *)cb->args[3];
14883 data_len = cb->args[4];
14884 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14885
14886 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14887 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14888 if (!wdev) {
14889 err = -EINVAL;
14890 goto out;
14891 }
14892 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14893 !wdev->netdev) {
14894 err = -EINVAL;
14895 goto out;
14896 }
14897
14898 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14899 if (!wdev_running(wdev)) {
14900 err = -ENETDOWN;
14901 goto out;
14902 }
14903 }
14904 }
14905
14906 while (1) {
14907 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14908 cb->nlh->nlmsg_seq, NLM_F_MULTI,
14909 NL80211_CMD_VENDOR);
14910 if (!hdr)
14911 break;
14912
14913 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14914 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14915 wdev_id(wdev),
14916 NL80211_ATTR_PAD))) {
14917 genlmsg_cancel(skb, hdr);
14918 break;
14919 }
14920
14921 vendor_data = nla_nest_start_noflag(skb,
14922 NL80211_ATTR_VENDOR_DATA);
14923 if (!vendor_data) {
14924 genlmsg_cancel(skb, hdr);
14925 break;
14926 }
14927
14928 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14929 (unsigned long *)&cb->args[5]);
14930 nla_nest_end(skb, vendor_data);
14931
14932 if (err == -ENOBUFS || err == -ENOENT) {
14933 genlmsg_cancel(skb, hdr);
14934 break;
14935 } else if (err <= 0) {
14936 genlmsg_cancel(skb, hdr);
14937 goto out;
14938 }
14939
14940 genlmsg_end(skb, hdr);
14941 }
14942
14943 err = skb->len;
14944 out:
14945 rtnl_unlock();
14946 return err;
14947 }
14948
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)14949 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14950 enum nl80211_commands cmd,
14951 enum nl80211_attrs attr,
14952 int approxlen)
14953 {
14954 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14955
14956 if (WARN_ON(!rdev->cur_cmd_info))
14957 return NULL;
14958
14959 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14960 rdev->cur_cmd_info->snd_portid,
14961 rdev->cur_cmd_info->snd_seq,
14962 cmd, attr, NULL, GFP_KERNEL);
14963 }
14964 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14965
cfg80211_vendor_cmd_reply(struct sk_buff * skb)14966 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14967 {
14968 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14969 void *hdr = ((void **)skb->cb)[1];
14970 struct nlattr *data = ((void **)skb->cb)[2];
14971
14972 /* clear CB data for netlink core to own from now on */
14973 memset(skb->cb, 0, sizeof(skb->cb));
14974
14975 if (WARN_ON(!rdev->cur_cmd_info)) {
14976 kfree_skb(skb);
14977 return -EINVAL;
14978 }
14979
14980 nla_nest_end(skb, data);
14981 genlmsg_end(skb, hdr);
14982 return genlmsg_reply(skb, rdev->cur_cmd_info);
14983 }
14984 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14985
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)14986 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14987 {
14988 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14989
14990 if (WARN_ON(!rdev->cur_cmd_info))
14991 return 0;
14992
14993 return rdev->cur_cmd_info->snd_portid;
14994 }
14995 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14996
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)14997 static int nl80211_set_qos_map(struct sk_buff *skb,
14998 struct genl_info *info)
14999 {
15000 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15001 struct cfg80211_qos_map *qos_map = NULL;
15002 struct net_device *dev = info->user_ptr[1];
15003 u8 *pos, len, num_des, des_len, des;
15004 int ret;
15005
15006 if (!rdev->ops->set_qos_map)
15007 return -EOPNOTSUPP;
15008
15009 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15010 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15011 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15012
15013 if (len % 2)
15014 return -EINVAL;
15015
15016 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15017 if (!qos_map)
15018 return -ENOMEM;
15019
15020 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15021 if (num_des) {
15022 des_len = num_des *
15023 sizeof(struct cfg80211_dscp_exception);
15024 memcpy(qos_map->dscp_exception, pos, des_len);
15025 qos_map->num_des = num_des;
15026 for (des = 0; des < num_des; des++) {
15027 if (qos_map->dscp_exception[des].up > 7) {
15028 kfree(qos_map);
15029 return -EINVAL;
15030 }
15031 }
15032 pos += des_len;
15033 }
15034 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15035 }
15036
15037 wdev_lock(dev->ieee80211_ptr);
15038 ret = nl80211_key_allowed(dev->ieee80211_ptr);
15039 if (!ret)
15040 ret = rdev_set_qos_map(rdev, dev, qos_map);
15041 wdev_unlock(dev->ieee80211_ptr);
15042
15043 kfree(qos_map);
15044 return ret;
15045 }
15046
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)15047 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15048 {
15049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15050 struct net_device *dev = info->user_ptr[1];
15051 struct wireless_dev *wdev = dev->ieee80211_ptr;
15052 const u8 *peer;
15053 u8 tsid, up;
15054 u16 admitted_time = 0;
15055 int err;
15056
15057 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15058 return -EOPNOTSUPP;
15059
15060 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15061 !info->attrs[NL80211_ATTR_USER_PRIO])
15062 return -EINVAL;
15063
15064 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15065 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15066
15067 /* WMM uses TIDs 0-7 even for TSPEC */
15068 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15069 /* TODO: handle 802.11 TSPEC/admission control
15070 * need more attributes for that (e.g. BA session requirement);
15071 * change the WMM adminssion test above to allow both then
15072 */
15073 return -EINVAL;
15074 }
15075
15076 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15077
15078 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15079 admitted_time =
15080 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15081 if (!admitted_time)
15082 return -EINVAL;
15083 }
15084
15085 wdev_lock(wdev);
15086 switch (wdev->iftype) {
15087 case NL80211_IFTYPE_STATION:
15088 case NL80211_IFTYPE_P2P_CLIENT:
15089 if (wdev->connected)
15090 break;
15091 err = -ENOTCONN;
15092 goto out;
15093 default:
15094 err = -EOPNOTSUPP;
15095 goto out;
15096 }
15097
15098 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15099
15100 out:
15101 wdev_unlock(wdev);
15102 return err;
15103 }
15104
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)15105 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15106 {
15107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15108 struct net_device *dev = info->user_ptr[1];
15109 struct wireless_dev *wdev = dev->ieee80211_ptr;
15110 const u8 *peer;
15111 u8 tsid;
15112 int err;
15113
15114 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15115 return -EINVAL;
15116
15117 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15118 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15119
15120 wdev_lock(wdev);
15121 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15122 wdev_unlock(wdev);
15123
15124 return err;
15125 }
15126
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)15127 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15128 struct genl_info *info)
15129 {
15130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15131 struct net_device *dev = info->user_ptr[1];
15132 struct wireless_dev *wdev = dev->ieee80211_ptr;
15133 struct cfg80211_chan_def chandef = {};
15134 const u8 *addr;
15135 u8 oper_class;
15136 int err;
15137
15138 if (!rdev->ops->tdls_channel_switch ||
15139 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15140 return -EOPNOTSUPP;
15141
15142 switch (dev->ieee80211_ptr->iftype) {
15143 case NL80211_IFTYPE_STATION:
15144 case NL80211_IFTYPE_P2P_CLIENT:
15145 break;
15146 default:
15147 return -EOPNOTSUPP;
15148 }
15149
15150 if (!info->attrs[NL80211_ATTR_MAC] ||
15151 !info->attrs[NL80211_ATTR_OPER_CLASS])
15152 return -EINVAL;
15153
15154 err = nl80211_parse_chandef(rdev, info, &chandef);
15155 if (err)
15156 return err;
15157
15158 /*
15159 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15160 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15161 * specification is not defined for them.
15162 */
15163 if (chandef.chan->band == NL80211_BAND_2GHZ &&
15164 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15165 chandef.width != NL80211_CHAN_WIDTH_20)
15166 return -EINVAL;
15167
15168 /* we will be active on the TDLS link */
15169 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15170 wdev->iftype))
15171 return -EINVAL;
15172
15173 /* don't allow switching to DFS channels */
15174 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15175 return -EINVAL;
15176
15177 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15178 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15179
15180 wdev_lock(wdev);
15181 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15182 wdev_unlock(wdev);
15183
15184 return err;
15185 }
15186
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)15187 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15188 struct genl_info *info)
15189 {
15190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15191 struct net_device *dev = info->user_ptr[1];
15192 struct wireless_dev *wdev = dev->ieee80211_ptr;
15193 const u8 *addr;
15194
15195 if (!rdev->ops->tdls_channel_switch ||
15196 !rdev->ops->tdls_cancel_channel_switch ||
15197 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15198 return -EOPNOTSUPP;
15199
15200 switch (dev->ieee80211_ptr->iftype) {
15201 case NL80211_IFTYPE_STATION:
15202 case NL80211_IFTYPE_P2P_CLIENT:
15203 break;
15204 default:
15205 return -EOPNOTSUPP;
15206 }
15207
15208 if (!info->attrs[NL80211_ATTR_MAC])
15209 return -EINVAL;
15210
15211 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15212
15213 wdev_lock(wdev);
15214 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15215 wdev_unlock(wdev);
15216
15217 return 0;
15218 }
15219
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)15220 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15221 struct genl_info *info)
15222 {
15223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15224 struct net_device *dev = info->user_ptr[1];
15225 struct wireless_dev *wdev = dev->ieee80211_ptr;
15226 const struct nlattr *nla;
15227 bool enabled;
15228
15229 if (!rdev->ops->set_multicast_to_unicast)
15230 return -EOPNOTSUPP;
15231
15232 if (wdev->iftype != NL80211_IFTYPE_AP &&
15233 wdev->iftype != NL80211_IFTYPE_P2P_GO)
15234 return -EOPNOTSUPP;
15235
15236 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15237 enabled = nla_get_flag(nla);
15238
15239 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15240 }
15241
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)15242 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15243 {
15244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15245 struct net_device *dev = info->user_ptr[1];
15246 struct wireless_dev *wdev = dev->ieee80211_ptr;
15247 struct cfg80211_pmk_conf pmk_conf = {};
15248 int ret;
15249
15250 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15251 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15252 return -EOPNOTSUPP;
15253
15254 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15255 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15256 return -EOPNOTSUPP;
15257
15258 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15259 return -EINVAL;
15260
15261 wdev_lock(wdev);
15262 if (!wdev->connected) {
15263 ret = -ENOTCONN;
15264 goto out;
15265 }
15266
15267 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15268 if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15269 ret = -EINVAL;
15270 goto out;
15271 }
15272
15273 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15274 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15275 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15276 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15277 ret = -EINVAL;
15278 goto out;
15279 }
15280
15281 if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15282 pmk_conf.pmk_r0_name =
15283 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15284
15285 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15286 out:
15287 wdev_unlock(wdev);
15288 return ret;
15289 }
15290
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)15291 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15292 {
15293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15294 struct net_device *dev = info->user_ptr[1];
15295 struct wireless_dev *wdev = dev->ieee80211_ptr;
15296 const u8 *aa;
15297 int ret;
15298
15299 if (wdev->iftype != NL80211_IFTYPE_STATION &&
15300 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15301 return -EOPNOTSUPP;
15302
15303 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15304 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15305 return -EOPNOTSUPP;
15306
15307 if (!info->attrs[NL80211_ATTR_MAC])
15308 return -EINVAL;
15309
15310 wdev_lock(wdev);
15311 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15312 ret = rdev_del_pmk(rdev, dev, aa);
15313 wdev_unlock(wdev);
15314
15315 return ret;
15316 }
15317
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)15318 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15319 {
15320 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15321 struct net_device *dev = info->user_ptr[1];
15322 struct cfg80211_external_auth_params params;
15323
15324 if (!rdev->ops->external_auth)
15325 return -EOPNOTSUPP;
15326
15327 if (!info->attrs[NL80211_ATTR_SSID] &&
15328 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15329 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15330 return -EINVAL;
15331
15332 if (!info->attrs[NL80211_ATTR_BSSID])
15333 return -EINVAL;
15334
15335 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15336 return -EINVAL;
15337
15338 memset(¶ms, 0, sizeof(params));
15339
15340 if (info->attrs[NL80211_ATTR_SSID]) {
15341 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15342 if (params.ssid.ssid_len == 0)
15343 return -EINVAL;
15344 memcpy(params.ssid.ssid,
15345 nla_data(info->attrs[NL80211_ATTR_SSID]),
15346 params.ssid.ssid_len);
15347 }
15348
15349 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15350 ETH_ALEN);
15351
15352 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15353
15354 if (info->attrs[NL80211_ATTR_PMKID])
15355 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15356
15357 return rdev_external_auth(rdev, dev, ¶ms);
15358 }
15359
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)15360 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15361 {
15362 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15364 struct net_device *dev = info->user_ptr[1];
15365 struct wireless_dev *wdev = dev->ieee80211_ptr;
15366 const u8 *buf;
15367 size_t len;
15368 u8 *dest;
15369 u16 proto;
15370 bool noencrypt;
15371 u64 cookie = 0;
15372 int link_id;
15373 int err;
15374
15375 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15376 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15377 return -EOPNOTSUPP;
15378
15379 if (!rdev->ops->tx_control_port)
15380 return -EOPNOTSUPP;
15381
15382 if (!info->attrs[NL80211_ATTR_FRAME] ||
15383 !info->attrs[NL80211_ATTR_MAC] ||
15384 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15385 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15386 return -EINVAL;
15387 }
15388
15389 wdev_lock(wdev);
15390
15391 switch (wdev->iftype) {
15392 case NL80211_IFTYPE_AP:
15393 case NL80211_IFTYPE_P2P_GO:
15394 case NL80211_IFTYPE_MESH_POINT:
15395 break;
15396 case NL80211_IFTYPE_ADHOC:
15397 if (wdev->u.ibss.current_bss)
15398 break;
15399 err = -ENOTCONN;
15400 goto out;
15401 case NL80211_IFTYPE_STATION:
15402 case NL80211_IFTYPE_P2P_CLIENT:
15403 if (wdev->connected)
15404 break;
15405 err = -ENOTCONN;
15406 goto out;
15407 default:
15408 err = -EOPNOTSUPP;
15409 goto out;
15410 }
15411
15412 wdev_unlock(wdev);
15413
15414 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15415 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15416 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15417 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15418 noencrypt =
15419 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15420
15421 link_id = nl80211_link_id_or_invalid(info->attrs);
15422
15423 err = rdev_tx_control_port(rdev, dev, buf, len,
15424 dest, cpu_to_be16(proto), noencrypt, link_id,
15425 dont_wait_for_ack ? NULL : &cookie);
15426 if (!err && !dont_wait_for_ack)
15427 nl_set_extack_cookie_u64(info->extack, cookie);
15428 return err;
15429 out:
15430 wdev_unlock(wdev);
15431 return err;
15432 }
15433
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)15434 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15435 struct genl_info *info)
15436 {
15437 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15438 struct net_device *dev = info->user_ptr[1];
15439 struct wireless_dev *wdev = dev->ieee80211_ptr;
15440 struct cfg80211_ftm_responder_stats ftm_stats = {};
15441 unsigned int link_id = nl80211_link_id(info->attrs);
15442 struct sk_buff *msg;
15443 void *hdr;
15444 struct nlattr *ftm_stats_attr;
15445 int err;
15446
15447 if (wdev->iftype != NL80211_IFTYPE_AP ||
15448 !wdev->links[link_id].ap.beacon_interval)
15449 return -EOPNOTSUPP;
15450
15451 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15452 if (err)
15453 return err;
15454
15455 if (!ftm_stats.filled)
15456 return -ENODATA;
15457
15458 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15459 if (!msg)
15460 return -ENOMEM;
15461
15462 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15463 NL80211_CMD_GET_FTM_RESPONDER_STATS);
15464 if (!hdr)
15465 goto nla_put_failure;
15466
15467 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15468 goto nla_put_failure;
15469
15470 ftm_stats_attr = nla_nest_start_noflag(msg,
15471 NL80211_ATTR_FTM_RESPONDER_STATS);
15472 if (!ftm_stats_attr)
15473 goto nla_put_failure;
15474
15475 #define SET_FTM(field, name, type) \
15476 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15477 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
15478 ftm_stats.field)) \
15479 goto nla_put_failure; } while (0)
15480 #define SET_FTM_U64(field, name) \
15481 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15482 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
15483 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
15484 goto nla_put_failure; } while (0)
15485
15486 SET_FTM(success_num, SUCCESS_NUM, u32);
15487 SET_FTM(partial_num, PARTIAL_NUM, u32);
15488 SET_FTM(failed_num, FAILED_NUM, u32);
15489 SET_FTM(asap_num, ASAP_NUM, u32);
15490 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15491 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15492 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15493 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15494 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15495 #undef SET_FTM
15496
15497 nla_nest_end(msg, ftm_stats_attr);
15498
15499 genlmsg_end(msg, hdr);
15500 return genlmsg_reply(msg, info);
15501
15502 nla_put_failure:
15503 nlmsg_free(msg);
15504 return -ENOBUFS;
15505 }
15506
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)15507 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15508 {
15509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15510 struct cfg80211_update_owe_info owe_info;
15511 struct net_device *dev = info->user_ptr[1];
15512
15513 if (!rdev->ops->update_owe_info)
15514 return -EOPNOTSUPP;
15515
15516 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15517 !info->attrs[NL80211_ATTR_MAC])
15518 return -EINVAL;
15519
15520 memset(&owe_info, 0, sizeof(owe_info));
15521 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15522 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15523
15524 if (info->attrs[NL80211_ATTR_IE]) {
15525 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15526 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15527 }
15528
15529 return rdev_update_owe_info(rdev, dev, &owe_info);
15530 }
15531
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)15532 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15533 {
15534 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15535 struct net_device *dev = info->user_ptr[1];
15536 struct wireless_dev *wdev = dev->ieee80211_ptr;
15537 struct station_info sinfo = {};
15538 const u8 *buf;
15539 size_t len;
15540 u8 *dest;
15541 int err;
15542
15543 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15544 return -EOPNOTSUPP;
15545
15546 if (!info->attrs[NL80211_ATTR_MAC] ||
15547 !info->attrs[NL80211_ATTR_FRAME]) {
15548 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15549 return -EINVAL;
15550 }
15551
15552 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15553 return -EOPNOTSUPP;
15554
15555 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15556 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15557 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15558
15559 if (len < sizeof(struct ethhdr))
15560 return -EINVAL;
15561
15562 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15563 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15564 return -EINVAL;
15565
15566 err = rdev_get_station(rdev, dev, dest, &sinfo);
15567 if (err)
15568 return err;
15569
15570 cfg80211_sinfo_release_content(&sinfo);
15571
15572 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15573 }
15574
parse_tid_conf(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct net_device * dev,struct cfg80211_tid_cfg * tid_conf,struct genl_info * info,const u8 * peer,unsigned int link_id)15575 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15576 struct nlattr *attrs[], struct net_device *dev,
15577 struct cfg80211_tid_cfg *tid_conf,
15578 struct genl_info *info, const u8 *peer,
15579 unsigned int link_id)
15580 {
15581 struct netlink_ext_ack *extack = info->extack;
15582 u64 mask;
15583 int err;
15584
15585 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15586 return -EINVAL;
15587
15588 tid_conf->config_override =
15589 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15590 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15591
15592 if (tid_conf->config_override) {
15593 if (rdev->ops->reset_tid_config) {
15594 err = rdev_reset_tid_config(rdev, dev, peer,
15595 tid_conf->tids);
15596 if (err)
15597 return err;
15598 } else {
15599 return -EINVAL;
15600 }
15601 }
15602
15603 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15604 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15605 tid_conf->noack =
15606 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15607 }
15608
15609 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15610 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15611 tid_conf->retry_short =
15612 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15613
15614 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15615 return -EINVAL;
15616 }
15617
15618 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15619 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15620 tid_conf->retry_long =
15621 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15622
15623 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15624 return -EINVAL;
15625 }
15626
15627 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15628 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15629 tid_conf->ampdu =
15630 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15631 }
15632
15633 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15634 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15635 tid_conf->rtscts =
15636 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15637 }
15638
15639 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15640 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15641 tid_conf->amsdu =
15642 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15643 }
15644
15645 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15646 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15647
15648 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15649
15650 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15651 attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15652 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15653 &tid_conf->txrate_mask, dev,
15654 true, link_id);
15655 if (err)
15656 return err;
15657
15658 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15659 }
15660 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15661 }
15662
15663 if (peer)
15664 mask = rdev->wiphy.tid_config_support.peer;
15665 else
15666 mask = rdev->wiphy.tid_config_support.vif;
15667
15668 if (tid_conf->mask & ~mask) {
15669 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15670 return -ENOTSUPP;
15671 }
15672
15673 return 0;
15674 }
15675
nl80211_set_tid_config(struct sk_buff * skb,struct genl_info * info)15676 static int nl80211_set_tid_config(struct sk_buff *skb,
15677 struct genl_info *info)
15678 {
15679 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15680 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15681 unsigned int link_id = nl80211_link_id(info->attrs);
15682 struct net_device *dev = info->user_ptr[1];
15683 struct cfg80211_tid_config *tid_config;
15684 struct nlattr *tid;
15685 int conf_idx = 0, rem_conf;
15686 int ret = -EINVAL;
15687 u32 num_conf = 0;
15688
15689 if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15690 return -EINVAL;
15691
15692 if (!rdev->ops->set_tid_config)
15693 return -EOPNOTSUPP;
15694
15695 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15696 rem_conf)
15697 num_conf++;
15698
15699 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15700 GFP_KERNEL);
15701 if (!tid_config)
15702 return -ENOMEM;
15703
15704 tid_config->n_tid_conf = num_conf;
15705
15706 if (info->attrs[NL80211_ATTR_MAC])
15707 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15708
15709 wdev_lock(dev->ieee80211_ptr);
15710
15711 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15712 rem_conf) {
15713 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15714 tid, NULL, NULL);
15715
15716 if (ret)
15717 goto bad_tid_conf;
15718
15719 ret = parse_tid_conf(rdev, attrs, dev,
15720 &tid_config->tid_conf[conf_idx],
15721 info, tid_config->peer, link_id);
15722 if (ret)
15723 goto bad_tid_conf;
15724
15725 conf_idx++;
15726 }
15727
15728 ret = rdev_set_tid_config(rdev, dev, tid_config);
15729
15730 bad_tid_conf:
15731 kfree(tid_config);
15732 wdev_unlock(dev->ieee80211_ptr);
15733 return ret;
15734 }
15735
nl80211_color_change(struct sk_buff * skb,struct genl_info * info)15736 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15737 {
15738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15739 struct cfg80211_color_change_settings params = {};
15740 struct net_device *dev = info->user_ptr[1];
15741 struct wireless_dev *wdev = dev->ieee80211_ptr;
15742 struct nlattr **tb;
15743 u16 offset;
15744 int err;
15745
15746 if (!rdev->ops->color_change)
15747 return -EOPNOTSUPP;
15748
15749 if (!wiphy_ext_feature_isset(&rdev->wiphy,
15750 NL80211_EXT_FEATURE_BSS_COLOR))
15751 return -EOPNOTSUPP;
15752
15753 if (wdev->iftype != NL80211_IFTYPE_AP)
15754 return -EOPNOTSUPP;
15755
15756 if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15757 !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15758 !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15759 return -EINVAL;
15760
15761 params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15762 params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15763
15764 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_next);
15765 if (err)
15766 return err;
15767
15768 tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15769 if (!tb)
15770 return -ENOMEM;
15771
15772 err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15773 info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15774 nl80211_policy, info->extack);
15775 if (err)
15776 goto out;
15777
15778 err = nl80211_parse_beacon(rdev, tb, ¶ms.beacon_color_change);
15779 if (err)
15780 goto out;
15781
15782 if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15783 err = -EINVAL;
15784 goto out;
15785 }
15786
15787 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15788 err = -EINVAL;
15789 goto out;
15790 }
15791
15792 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15793 if (offset >= params.beacon_color_change.tail_len) {
15794 err = -EINVAL;
15795 goto out;
15796 }
15797
15798 if (params.beacon_color_change.tail[offset] != params.count) {
15799 err = -EINVAL;
15800 goto out;
15801 }
15802
15803 params.counter_offset_beacon = offset;
15804
15805 if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15806 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15807 sizeof(u16)) {
15808 err = -EINVAL;
15809 goto out;
15810 }
15811
15812 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15813 if (offset >= params.beacon_color_change.probe_resp_len) {
15814 err = -EINVAL;
15815 goto out;
15816 }
15817
15818 if (params.beacon_color_change.probe_resp[offset] !=
15819 params.count) {
15820 err = -EINVAL;
15821 goto out;
15822 }
15823
15824 params.counter_offset_presp = offset;
15825 }
15826
15827 wdev_lock(wdev);
15828 err = rdev_color_change(rdev, dev, ¶ms);
15829 wdev_unlock(wdev);
15830
15831 out:
15832 kfree(params.beacon_next.mbssid_ies);
15833 kfree(params.beacon_color_change.mbssid_ies);
15834 kfree(tb);
15835 return err;
15836 }
15837
nl80211_set_fils_aad(struct sk_buff * skb,struct genl_info * info)15838 static int nl80211_set_fils_aad(struct sk_buff *skb,
15839 struct genl_info *info)
15840 {
15841 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15842 struct net_device *dev = info->user_ptr[1];
15843 struct cfg80211_fils_aad fils_aad = {};
15844 u8 *nonces;
15845
15846 if (!info->attrs[NL80211_ATTR_MAC] ||
15847 !info->attrs[NL80211_ATTR_FILS_KEK] ||
15848 !info->attrs[NL80211_ATTR_FILS_NONCES])
15849 return -EINVAL;
15850
15851 fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15852 fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15853 fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15854 nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15855 fils_aad.snonce = nonces;
15856 fils_aad.anonce = nonces + FILS_NONCE_LEN;
15857
15858 return rdev_set_fils_aad(rdev, dev, &fils_aad);
15859 }
15860
nl80211_add_link(struct sk_buff * skb,struct genl_info * info)15861 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15862 {
15863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15864 unsigned int link_id = nl80211_link_id(info->attrs);
15865 struct net_device *dev = info->user_ptr[1];
15866 struct wireless_dev *wdev = dev->ieee80211_ptr;
15867 int ret;
15868
15869 if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15870 return -EINVAL;
15871
15872 switch (wdev->iftype) {
15873 case NL80211_IFTYPE_AP:
15874 break;
15875 default:
15876 return -EINVAL;
15877 }
15878
15879 if (!info->attrs[NL80211_ATTR_MAC] ||
15880 !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15881 return -EINVAL;
15882
15883 wdev_lock(wdev);
15884 wdev->valid_links |= BIT(link_id);
15885 ether_addr_copy(wdev->links[link_id].addr,
15886 nla_data(info->attrs[NL80211_ATTR_MAC]));
15887
15888 ret = rdev_add_intf_link(rdev, wdev, link_id);
15889 if (ret) {
15890 wdev->valid_links &= ~BIT(link_id);
15891 eth_zero_addr(wdev->links[link_id].addr);
15892 }
15893 wdev_unlock(wdev);
15894
15895 return ret;
15896 }
15897
nl80211_remove_link(struct sk_buff * skb,struct genl_info * info)15898 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
15899 {
15900 unsigned int link_id = nl80211_link_id(info->attrs);
15901 struct net_device *dev = info->user_ptr[1];
15902 struct wireless_dev *wdev = dev->ieee80211_ptr;
15903
15904 /* cannot remove if there's no link */
15905 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15906 return -EINVAL;
15907
15908 switch (wdev->iftype) {
15909 case NL80211_IFTYPE_AP:
15910 break;
15911 default:
15912 return -EINVAL;
15913 }
15914
15915 wdev_lock(wdev);
15916 cfg80211_remove_link(wdev, link_id);
15917 wdev_unlock(wdev);
15918
15919 return 0;
15920 }
15921
15922 static int
nl80211_add_mod_link_station(struct sk_buff * skb,struct genl_info * info,bool add)15923 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
15924 bool add)
15925 {
15926 struct link_station_parameters params = {};
15927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
15928 struct net_device *dev = info->user_ptr[1];
15929 int err;
15930
15931 if ((add && !rdev->ops->add_link_station) ||
15932 (!add && !rdev->ops->mod_link_station))
15933 return -EOPNOTSUPP;
15934
15935 if (add && !info->attrs[NL80211_ATTR_MAC])
15936 return -EINVAL;
15937
15938 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
15939 return -EINVAL;
15940
15941 if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
15942 return -EINVAL;
15943
15944 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15945
15946 if (info->attrs[NL80211_ATTR_MAC]) {
15947 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
15948 if (!is_valid_ether_addr(params.link_mac))
15949 return -EINVAL;
15950 }
15951
15952 if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15953 return -EINVAL;
15954
15955 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15956
15957 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
15958 params.supported_rates =
15959 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15960 params.supported_rates_len =
15961 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15962 }
15963
15964 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
15965 params.ht_capa =
15966 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
15967
15968 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
15969 params.vht_capa =
15970 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
15971
15972 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
15973 params.he_capa =
15974 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15975 params.he_capa_len =
15976 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15977
15978 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
15979 params.eht_capa =
15980 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15981 params.eht_capa_len =
15982 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15983
15984 if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
15985 (const u8 *)params.eht_capa,
15986 params.eht_capa_len,
15987 false))
15988 return -EINVAL;
15989 }
15990 }
15991
15992 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
15993 params.he_6ghz_capa =
15994 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
15995
15996 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
15997 params.opmode_notif_used = true;
15998 params.opmode_notif =
15999 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16000 }
16001
16002 err = nl80211_parse_sta_txpower_setting(info, ¶ms.txpwr,
16003 ¶ms.txpwr_set);
16004 if (err)
16005 return err;
16006
16007 wdev_lock(dev->ieee80211_ptr);
16008 if (add)
16009 err = rdev_add_link_station(rdev, dev, ¶ms);
16010 else
16011 err = rdev_mod_link_station(rdev, dev, ¶ms);
16012 wdev_unlock(dev->ieee80211_ptr);
16013
16014 return err;
16015 }
16016
16017 static int
nl80211_add_link_station(struct sk_buff * skb,struct genl_info * info)16018 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16019 {
16020 return nl80211_add_mod_link_station(skb, info, true);
16021 }
16022
16023 static int
nl80211_modify_link_station(struct sk_buff * skb,struct genl_info * info)16024 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16025 {
16026 return nl80211_add_mod_link_station(skb, info, false);
16027 }
16028
16029 static int
nl80211_remove_link_station(struct sk_buff * skb,struct genl_info * info)16030 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16031 {
16032 struct link_station_del_parameters params = {};
16033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16034 struct net_device *dev = info->user_ptr[1];
16035 int ret;
16036
16037 if (!rdev->ops->del_link_station)
16038 return -EOPNOTSUPP;
16039
16040 if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16041 !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16042 return -EINVAL;
16043
16044 params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16045 params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16046
16047 wdev_lock(dev->ieee80211_ptr);
16048 ret = rdev_del_link_station(rdev, dev, ¶ms);
16049 wdev_unlock(dev->ieee80211_ptr);
16050
16051 return ret;
16052 }
16053
16054 #define NL80211_FLAG_NEED_WIPHY 0x01
16055 #define NL80211_FLAG_NEED_NETDEV 0x02
16056 #define NL80211_FLAG_NEED_RTNL 0x04
16057 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
16058 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
16059 NL80211_FLAG_CHECK_NETDEV_UP)
16060 #define NL80211_FLAG_NEED_WDEV 0x10
16061 /* If a netdev is associated, it must be UP, P2P must be started */
16062 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
16063 NL80211_FLAG_CHECK_NETDEV_UP)
16064 #define NL80211_FLAG_CLEAR_SKB 0x20
16065 #define NL80211_FLAG_NO_WIPHY_MTX 0x40
16066 #define NL80211_FLAG_MLO_VALID_LINK_ID 0x80
16067 #define NL80211_FLAG_MLO_UNSUPPORTED 0x100
16068
16069 #define INTERNAL_FLAG_SELECTORS(__sel) \
16070 SELECTOR(__sel, NONE, 0) /* must be first */ \
16071 SELECTOR(__sel, WIPHY, \
16072 NL80211_FLAG_NEED_WIPHY) \
16073 SELECTOR(__sel, WDEV, \
16074 NL80211_FLAG_NEED_WDEV) \
16075 SELECTOR(__sel, NETDEV, \
16076 NL80211_FLAG_NEED_NETDEV) \
16077 SELECTOR(__sel, NETDEV_LINK, \
16078 NL80211_FLAG_NEED_NETDEV | \
16079 NL80211_FLAG_MLO_VALID_LINK_ID) \
16080 SELECTOR(__sel, NETDEV_NO_MLO, \
16081 NL80211_FLAG_NEED_NETDEV | \
16082 NL80211_FLAG_MLO_UNSUPPORTED) \
16083 SELECTOR(__sel, WIPHY_RTNL, \
16084 NL80211_FLAG_NEED_WIPHY | \
16085 NL80211_FLAG_NEED_RTNL) \
16086 SELECTOR(__sel, WIPHY_RTNL_NOMTX, \
16087 NL80211_FLAG_NEED_WIPHY | \
16088 NL80211_FLAG_NEED_RTNL | \
16089 NL80211_FLAG_NO_WIPHY_MTX) \
16090 SELECTOR(__sel, WDEV_RTNL, \
16091 NL80211_FLAG_NEED_WDEV | \
16092 NL80211_FLAG_NEED_RTNL) \
16093 SELECTOR(__sel, NETDEV_RTNL, \
16094 NL80211_FLAG_NEED_NETDEV | \
16095 NL80211_FLAG_NEED_RTNL) \
16096 SELECTOR(__sel, NETDEV_UP, \
16097 NL80211_FLAG_NEED_NETDEV_UP) \
16098 SELECTOR(__sel, NETDEV_UP_LINK, \
16099 NL80211_FLAG_NEED_NETDEV_UP | \
16100 NL80211_FLAG_MLO_VALID_LINK_ID) \
16101 SELECTOR(__sel, NETDEV_UP_NO_MLO, \
16102 NL80211_FLAG_NEED_NETDEV_UP | \
16103 NL80211_FLAG_MLO_UNSUPPORTED) \
16104 SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR, \
16105 NL80211_FLAG_NEED_NETDEV_UP | \
16106 NL80211_FLAG_CLEAR_SKB | \
16107 NL80211_FLAG_MLO_UNSUPPORTED) \
16108 SELECTOR(__sel, NETDEV_UP_NOTMX, \
16109 NL80211_FLAG_NEED_NETDEV_UP | \
16110 NL80211_FLAG_NO_WIPHY_MTX) \
16111 SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO, \
16112 NL80211_FLAG_NEED_NETDEV_UP | \
16113 NL80211_FLAG_NO_WIPHY_MTX | \
16114 NL80211_FLAG_MLO_UNSUPPORTED) \
16115 SELECTOR(__sel, NETDEV_UP_CLEAR, \
16116 NL80211_FLAG_NEED_NETDEV_UP | \
16117 NL80211_FLAG_CLEAR_SKB) \
16118 SELECTOR(__sel, WDEV_UP, \
16119 NL80211_FLAG_NEED_WDEV_UP) \
16120 SELECTOR(__sel, WDEV_UP_LINK, \
16121 NL80211_FLAG_NEED_WDEV_UP | \
16122 NL80211_FLAG_MLO_VALID_LINK_ID) \
16123 SELECTOR(__sel, WDEV_UP_RTNL, \
16124 NL80211_FLAG_NEED_WDEV_UP | \
16125 NL80211_FLAG_NEED_RTNL) \
16126 SELECTOR(__sel, WIPHY_CLEAR, \
16127 NL80211_FLAG_NEED_WIPHY | \
16128 NL80211_FLAG_CLEAR_SKB)
16129
16130 enum nl80211_internal_flags_selector {
16131 #define SELECTOR(_, name, value) NL80211_IFL_SEL_##name,
16132 INTERNAL_FLAG_SELECTORS(_)
16133 #undef SELECTOR
16134 };
16135
16136 static u32 nl80211_internal_flags[] = {
16137 #define SELECTOR(_, name, value) [NL80211_IFL_SEL_##name] = value,
16138 INTERNAL_FLAG_SELECTORS(_)
16139 #undef SELECTOR
16140 };
16141
nl80211_pre_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)16142 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
16143 struct genl_info *info)
16144 {
16145 struct cfg80211_registered_device *rdev = NULL;
16146 struct wireless_dev *wdev = NULL;
16147 struct net_device *dev = NULL;
16148 u32 internal_flags;
16149 int err;
16150
16151 if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16152 return -EINVAL;
16153
16154 internal_flags = nl80211_internal_flags[ops->internal_flags];
16155
16156 rtnl_lock();
16157 if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16158 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16159 if (IS_ERR(rdev)) {
16160 err = PTR_ERR(rdev);
16161 goto out_unlock;
16162 }
16163 info->user_ptr[0] = rdev;
16164 } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16165 internal_flags & NL80211_FLAG_NEED_WDEV) {
16166 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16167 info->attrs);
16168 if (IS_ERR(wdev)) {
16169 err = PTR_ERR(wdev);
16170 goto out_unlock;
16171 }
16172
16173 dev = wdev->netdev;
16174 dev_hold(dev);
16175 rdev = wiphy_to_rdev(wdev->wiphy);
16176
16177 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16178 if (!dev) {
16179 err = -EINVAL;
16180 goto out_unlock;
16181 }
16182
16183 info->user_ptr[1] = dev;
16184 } else {
16185 info->user_ptr[1] = wdev;
16186 }
16187
16188 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16189 !wdev_running(wdev)) {
16190 err = -ENETDOWN;
16191 goto out_unlock;
16192 }
16193
16194 info->user_ptr[0] = rdev;
16195 }
16196
16197 if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16198 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16199
16200 if (!wdev) {
16201 err = -EINVAL;
16202 goto out_unlock;
16203 }
16204
16205 /* MLO -> require valid link ID */
16206 if (wdev->valid_links &&
16207 (!link_id ||
16208 !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16209 err = -EINVAL;
16210 goto out_unlock;
16211 }
16212
16213 /* non-MLO -> no link ID attribute accepted */
16214 if (!wdev->valid_links && link_id) {
16215 err = -EINVAL;
16216 goto out_unlock;
16217 }
16218 }
16219
16220 if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16221 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16222 (wdev && wdev->valid_links)) {
16223 err = -EINVAL;
16224 goto out_unlock;
16225 }
16226 }
16227
16228 if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16229 wiphy_lock(&rdev->wiphy);
16230 /* we keep the mutex locked until post_doit */
16231 __release(&rdev->wiphy.mtx);
16232 }
16233 if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16234 rtnl_unlock();
16235
16236 return 0;
16237 out_unlock:
16238 rtnl_unlock();
16239 dev_put(dev);
16240 return err;
16241 }
16242
nl80211_post_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)16243 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
16244 struct genl_info *info)
16245 {
16246 u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16247
16248 if (info->user_ptr[1]) {
16249 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16250 struct wireless_dev *wdev = info->user_ptr[1];
16251
16252 dev_put(wdev->netdev);
16253 } else {
16254 dev_put(info->user_ptr[1]);
16255 }
16256 }
16257
16258 if (info->user_ptr[0] &&
16259 !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16261
16262 /* we kept the mutex locked since pre_doit */
16263 __acquire(&rdev->wiphy.mtx);
16264 wiphy_unlock(&rdev->wiphy);
16265 }
16266
16267 if (internal_flags & NL80211_FLAG_NEED_RTNL)
16268 rtnl_unlock();
16269
16270 /* If needed, clear the netlink message payload from the SKB
16271 * as it might contain key data that shouldn't stick around on
16272 * the heap after the SKB is freed. The netlink message header
16273 * is still needed for further processing, so leave it intact.
16274 */
16275 if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16276 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16277
16278 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16279 }
16280 }
16281
nl80211_set_sar_sub_specs(struct cfg80211_registered_device * rdev,struct cfg80211_sar_specs * sar_specs,struct nlattr * spec[],int index)16282 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16283 struct cfg80211_sar_specs *sar_specs,
16284 struct nlattr *spec[], int index)
16285 {
16286 u32 range_index, i;
16287
16288 if (!sar_specs || !spec)
16289 return -EINVAL;
16290
16291 if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16292 !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16293 return -EINVAL;
16294
16295 range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16296
16297 /* check if range_index exceeds num_freq_ranges */
16298 if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16299 return -EINVAL;
16300
16301 /* check if range_index duplicates */
16302 for (i = 0; i < index; i++) {
16303 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16304 return -EINVAL;
16305 }
16306
16307 sar_specs->sub_specs[index].power =
16308 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16309
16310 sar_specs->sub_specs[index].freq_range_index = range_index;
16311
16312 return 0;
16313 }
16314
nl80211_set_sar_specs(struct sk_buff * skb,struct genl_info * info)16315 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16316 {
16317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16318 struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16319 struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16320 struct cfg80211_sar_specs *sar_spec;
16321 enum nl80211_sar_type type;
16322 struct nlattr *spec_list;
16323 u32 specs;
16324 int rem, err;
16325
16326 if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16327 return -EOPNOTSUPP;
16328
16329 if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16330 return -EINVAL;
16331
16332 nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16333 info->attrs[NL80211_ATTR_SAR_SPEC],
16334 NULL, NULL);
16335
16336 if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16337 return -EINVAL;
16338
16339 type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16340 if (type != rdev->wiphy.sar_capa->type)
16341 return -EINVAL;
16342
16343 specs = 0;
16344 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16345 specs++;
16346
16347 if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16348 return -EINVAL;
16349
16350 sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16351 if (!sar_spec)
16352 return -ENOMEM;
16353
16354 sar_spec->type = type;
16355 specs = 0;
16356 nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16357 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16358 spec_list, NULL, NULL);
16359
16360 switch (type) {
16361 case NL80211_SAR_TYPE_POWER:
16362 if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16363 spec, specs)) {
16364 err = -EINVAL;
16365 goto error;
16366 }
16367 break;
16368 default:
16369 err = -EINVAL;
16370 goto error;
16371 }
16372 specs++;
16373 }
16374
16375 sar_spec->num_sub_specs = specs;
16376
16377 rdev->cur_cmd_info = info;
16378 err = rdev_set_sar_specs(rdev, sar_spec);
16379 rdev->cur_cmd_info = NULL;
16380 error:
16381 kfree(sar_spec);
16382 return err;
16383 }
16384
16385 #define SELECTOR(__sel, name, value) \
16386 ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16387 int __missing_selector(void);
16388 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16389
16390 static const struct genl_ops nl80211_ops[] = {
16391 {
16392 .cmd = NL80211_CMD_GET_WIPHY,
16393 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16394 .doit = nl80211_get_wiphy,
16395 .dumpit = nl80211_dump_wiphy,
16396 .done = nl80211_dump_wiphy_done,
16397 /* can be retrieved by unprivileged users */
16398 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16399 },
16400 };
16401
16402 static const struct genl_small_ops nl80211_small_ops[] = {
16403 {
16404 .cmd = NL80211_CMD_SET_WIPHY,
16405 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16406 .doit = nl80211_set_wiphy,
16407 .flags = GENL_UNS_ADMIN_PERM,
16408 },
16409 {
16410 .cmd = NL80211_CMD_GET_INTERFACE,
16411 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16412 .doit = nl80211_get_interface,
16413 .dumpit = nl80211_dump_interface,
16414 /* can be retrieved by unprivileged users */
16415 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16416 },
16417 {
16418 .cmd = NL80211_CMD_SET_INTERFACE,
16419 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16420 .doit = nl80211_set_interface,
16421 .flags = GENL_UNS_ADMIN_PERM,
16422 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16423 NL80211_FLAG_NEED_RTNL),
16424 },
16425 {
16426 .cmd = NL80211_CMD_NEW_INTERFACE,
16427 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16428 .doit = nl80211_new_interface,
16429 .flags = GENL_UNS_ADMIN_PERM,
16430 .internal_flags =
16431 IFLAGS(NL80211_FLAG_NEED_WIPHY |
16432 NL80211_FLAG_NEED_RTNL |
16433 /* we take the wiphy mutex later ourselves */
16434 NL80211_FLAG_NO_WIPHY_MTX),
16435 },
16436 {
16437 .cmd = NL80211_CMD_DEL_INTERFACE,
16438 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16439 .doit = nl80211_del_interface,
16440 .flags = GENL_UNS_ADMIN_PERM,
16441 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16442 NL80211_FLAG_NEED_RTNL),
16443 },
16444 {
16445 .cmd = NL80211_CMD_GET_KEY,
16446 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16447 .doit = nl80211_get_key,
16448 .flags = GENL_UNS_ADMIN_PERM,
16449 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16450 },
16451 {
16452 .cmd = NL80211_CMD_SET_KEY,
16453 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16454 .doit = nl80211_set_key,
16455 .flags = GENL_UNS_ADMIN_PERM,
16456 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16457 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16458 NL80211_FLAG_CLEAR_SKB),
16459 },
16460 {
16461 .cmd = NL80211_CMD_NEW_KEY,
16462 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16463 .doit = nl80211_new_key,
16464 .flags = GENL_UNS_ADMIN_PERM,
16465 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16466 NL80211_FLAG_CLEAR_SKB),
16467 },
16468 {
16469 .cmd = NL80211_CMD_DEL_KEY,
16470 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16471 .doit = nl80211_del_key,
16472 .flags = GENL_UNS_ADMIN_PERM,
16473 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16474 },
16475 {
16476 .cmd = NL80211_CMD_SET_BEACON,
16477 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16478 .flags = GENL_UNS_ADMIN_PERM,
16479 .doit = nl80211_set_beacon,
16480 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16481 NL80211_FLAG_MLO_VALID_LINK_ID),
16482 },
16483 {
16484 .cmd = NL80211_CMD_START_AP,
16485 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16486 .flags = GENL_UNS_ADMIN_PERM,
16487 .doit = nl80211_start_ap,
16488 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16489 NL80211_FLAG_MLO_VALID_LINK_ID),
16490 },
16491 {
16492 .cmd = NL80211_CMD_STOP_AP,
16493 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16494 .flags = GENL_UNS_ADMIN_PERM,
16495 .doit = nl80211_stop_ap,
16496 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16497 NL80211_FLAG_MLO_VALID_LINK_ID),
16498 },
16499 {
16500 .cmd = NL80211_CMD_GET_STATION,
16501 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16502 .doit = nl80211_get_station,
16503 .dumpit = nl80211_dump_station,
16504 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16505 },
16506 {
16507 .cmd = NL80211_CMD_SET_STATION,
16508 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16509 .doit = nl80211_set_station,
16510 .flags = GENL_UNS_ADMIN_PERM,
16511 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16512 },
16513 {
16514 .cmd = NL80211_CMD_NEW_STATION,
16515 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16516 .doit = nl80211_new_station,
16517 .flags = GENL_UNS_ADMIN_PERM,
16518 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16519 },
16520 {
16521 .cmd = NL80211_CMD_DEL_STATION,
16522 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16523 .doit = nl80211_del_station,
16524 .flags = GENL_UNS_ADMIN_PERM,
16525 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16526 },
16527 {
16528 .cmd = NL80211_CMD_GET_MPATH,
16529 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16530 .doit = nl80211_get_mpath,
16531 .dumpit = nl80211_dump_mpath,
16532 .flags = GENL_UNS_ADMIN_PERM,
16533 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16534 },
16535 {
16536 .cmd = NL80211_CMD_GET_MPP,
16537 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16538 .doit = nl80211_get_mpp,
16539 .dumpit = nl80211_dump_mpp,
16540 .flags = GENL_UNS_ADMIN_PERM,
16541 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16542 },
16543 {
16544 .cmd = NL80211_CMD_SET_MPATH,
16545 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16546 .doit = nl80211_set_mpath,
16547 .flags = GENL_UNS_ADMIN_PERM,
16548 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16549 },
16550 {
16551 .cmd = NL80211_CMD_NEW_MPATH,
16552 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16553 .doit = nl80211_new_mpath,
16554 .flags = GENL_UNS_ADMIN_PERM,
16555 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16556 },
16557 {
16558 .cmd = NL80211_CMD_DEL_MPATH,
16559 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16560 .doit = nl80211_del_mpath,
16561 .flags = GENL_UNS_ADMIN_PERM,
16562 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16563 },
16564 {
16565 .cmd = NL80211_CMD_SET_BSS,
16566 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16567 .doit = nl80211_set_bss,
16568 .flags = GENL_UNS_ADMIN_PERM,
16569 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16570 },
16571 {
16572 .cmd = NL80211_CMD_GET_REG,
16573 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16574 .doit = nl80211_get_reg_do,
16575 .dumpit = nl80211_get_reg_dump,
16576 /* can be retrieved by unprivileged users */
16577 },
16578 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16579 {
16580 .cmd = NL80211_CMD_SET_REG,
16581 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16582 .doit = nl80211_set_reg,
16583 .flags = GENL_ADMIN_PERM,
16584 },
16585 #endif
16586 {
16587 .cmd = NL80211_CMD_REQ_SET_REG,
16588 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16589 .doit = nl80211_req_set_reg,
16590 .flags = GENL_ADMIN_PERM,
16591 },
16592 {
16593 .cmd = NL80211_CMD_RELOAD_REGDB,
16594 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16595 .doit = nl80211_reload_regdb,
16596 .flags = GENL_ADMIN_PERM,
16597 },
16598 {
16599 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16600 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16601 .doit = nl80211_get_mesh_config,
16602 /* can be retrieved by unprivileged users */
16603 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16604 },
16605 {
16606 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16607 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16608 .doit = nl80211_update_mesh_config,
16609 .flags = GENL_UNS_ADMIN_PERM,
16610 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16611 },
16612 {
16613 .cmd = NL80211_CMD_TRIGGER_SCAN,
16614 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16615 .doit = nl80211_trigger_scan,
16616 .flags = GENL_UNS_ADMIN_PERM,
16617 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16618 },
16619 {
16620 .cmd = NL80211_CMD_ABORT_SCAN,
16621 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16622 .doit = nl80211_abort_scan,
16623 .flags = GENL_UNS_ADMIN_PERM,
16624 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16625 },
16626 {
16627 .cmd = NL80211_CMD_GET_SCAN,
16628 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16629 .dumpit = nl80211_dump_scan,
16630 },
16631 {
16632 .cmd = NL80211_CMD_START_SCHED_SCAN,
16633 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16634 .doit = nl80211_start_sched_scan,
16635 .flags = GENL_UNS_ADMIN_PERM,
16636 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16637 },
16638 {
16639 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16640 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16641 .doit = nl80211_stop_sched_scan,
16642 .flags = GENL_UNS_ADMIN_PERM,
16643 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16644 },
16645 {
16646 .cmd = NL80211_CMD_AUTHENTICATE,
16647 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16648 .doit = nl80211_authenticate,
16649 .flags = GENL_UNS_ADMIN_PERM,
16650 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16651 NL80211_FLAG_CLEAR_SKB),
16652 },
16653 {
16654 .cmd = NL80211_CMD_ASSOCIATE,
16655 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16656 .doit = nl80211_associate,
16657 .flags = GENL_UNS_ADMIN_PERM,
16658 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16659 NL80211_FLAG_CLEAR_SKB),
16660 },
16661 {
16662 .cmd = NL80211_CMD_DEAUTHENTICATE,
16663 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16664 .doit = nl80211_deauthenticate,
16665 .flags = GENL_UNS_ADMIN_PERM,
16666 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16667 },
16668 {
16669 .cmd = NL80211_CMD_DISASSOCIATE,
16670 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16671 .doit = nl80211_disassociate,
16672 .flags = GENL_UNS_ADMIN_PERM,
16673 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16674 },
16675 {
16676 .cmd = NL80211_CMD_JOIN_IBSS,
16677 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16678 .doit = nl80211_join_ibss,
16679 .flags = GENL_UNS_ADMIN_PERM,
16680 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16681 },
16682 {
16683 .cmd = NL80211_CMD_LEAVE_IBSS,
16684 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16685 .doit = nl80211_leave_ibss,
16686 .flags = GENL_UNS_ADMIN_PERM,
16687 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16688 },
16689 #ifdef CONFIG_NL80211_TESTMODE
16690 {
16691 .cmd = NL80211_CMD_TESTMODE,
16692 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16693 .doit = nl80211_testmode_do,
16694 .dumpit = nl80211_testmode_dump,
16695 .flags = GENL_UNS_ADMIN_PERM,
16696 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16697 },
16698 #endif
16699 {
16700 .cmd = NL80211_CMD_CONNECT,
16701 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16702 .doit = nl80211_connect,
16703 .flags = GENL_UNS_ADMIN_PERM,
16704 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16705 NL80211_FLAG_CLEAR_SKB),
16706 },
16707 {
16708 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16709 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16710 .doit = nl80211_update_connect_params,
16711 .flags = GENL_ADMIN_PERM,
16712 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16713 NL80211_FLAG_CLEAR_SKB),
16714 },
16715 {
16716 .cmd = NL80211_CMD_DISCONNECT,
16717 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16718 .doit = nl80211_disconnect,
16719 .flags = GENL_UNS_ADMIN_PERM,
16720 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16721 },
16722 {
16723 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16724 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16725 .doit = nl80211_wiphy_netns,
16726 .flags = GENL_UNS_ADMIN_PERM,
16727 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16728 NL80211_FLAG_NEED_RTNL |
16729 NL80211_FLAG_NO_WIPHY_MTX),
16730 },
16731 {
16732 .cmd = NL80211_CMD_GET_SURVEY,
16733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16734 .dumpit = nl80211_dump_survey,
16735 },
16736 {
16737 .cmd = NL80211_CMD_SET_PMKSA,
16738 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16739 .doit = nl80211_setdel_pmksa,
16740 .flags = GENL_UNS_ADMIN_PERM,
16741 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16742 NL80211_FLAG_CLEAR_SKB),
16743 },
16744 {
16745 .cmd = NL80211_CMD_DEL_PMKSA,
16746 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16747 .doit = nl80211_setdel_pmksa,
16748 .flags = GENL_UNS_ADMIN_PERM,
16749 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16750 },
16751 {
16752 .cmd = NL80211_CMD_FLUSH_PMKSA,
16753 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16754 .doit = nl80211_flush_pmksa,
16755 .flags = GENL_UNS_ADMIN_PERM,
16756 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16757 },
16758 {
16759 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16760 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16761 .doit = nl80211_remain_on_channel,
16762 .flags = GENL_UNS_ADMIN_PERM,
16763 /* FIXME: requiring a link ID here is probably not good */
16764 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16765 NL80211_FLAG_MLO_VALID_LINK_ID),
16766 },
16767 {
16768 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16769 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16770 .doit = nl80211_cancel_remain_on_channel,
16771 .flags = GENL_UNS_ADMIN_PERM,
16772 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16773 },
16774 {
16775 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16776 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16777 .doit = nl80211_set_tx_bitrate_mask,
16778 .flags = GENL_UNS_ADMIN_PERM,
16779 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16780 NL80211_FLAG_MLO_VALID_LINK_ID),
16781 },
16782 {
16783 .cmd = NL80211_CMD_REGISTER_FRAME,
16784 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16785 .doit = nl80211_register_mgmt,
16786 .flags = GENL_UNS_ADMIN_PERM,
16787 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16788 },
16789 {
16790 .cmd = NL80211_CMD_FRAME,
16791 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16792 .doit = nl80211_tx_mgmt,
16793 .flags = GENL_UNS_ADMIN_PERM,
16794 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16795 },
16796 {
16797 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16798 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16799 .doit = nl80211_tx_mgmt_cancel_wait,
16800 .flags = GENL_UNS_ADMIN_PERM,
16801 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16802 },
16803 {
16804 .cmd = NL80211_CMD_SET_POWER_SAVE,
16805 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16806 .doit = nl80211_set_power_save,
16807 .flags = GENL_UNS_ADMIN_PERM,
16808 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16809 },
16810 {
16811 .cmd = NL80211_CMD_GET_POWER_SAVE,
16812 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16813 .doit = nl80211_get_power_save,
16814 /* can be retrieved by unprivileged users */
16815 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16816 },
16817 {
16818 .cmd = NL80211_CMD_SET_CQM,
16819 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16820 .doit = nl80211_set_cqm,
16821 .flags = GENL_UNS_ADMIN_PERM,
16822 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16823 },
16824 {
16825 .cmd = NL80211_CMD_SET_CHANNEL,
16826 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16827 .doit = nl80211_set_channel,
16828 .flags = GENL_UNS_ADMIN_PERM,
16829 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16830 NL80211_FLAG_MLO_VALID_LINK_ID),
16831 },
16832 {
16833 .cmd = NL80211_CMD_JOIN_MESH,
16834 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16835 .doit = nl80211_join_mesh,
16836 .flags = GENL_UNS_ADMIN_PERM,
16837 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16838 },
16839 {
16840 .cmd = NL80211_CMD_LEAVE_MESH,
16841 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16842 .doit = nl80211_leave_mesh,
16843 .flags = GENL_UNS_ADMIN_PERM,
16844 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16845 },
16846 {
16847 .cmd = NL80211_CMD_JOIN_OCB,
16848 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16849 .doit = nl80211_join_ocb,
16850 .flags = GENL_UNS_ADMIN_PERM,
16851 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16852 },
16853 {
16854 .cmd = NL80211_CMD_LEAVE_OCB,
16855 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16856 .doit = nl80211_leave_ocb,
16857 .flags = GENL_UNS_ADMIN_PERM,
16858 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16859 },
16860 #ifdef CONFIG_PM
16861 {
16862 .cmd = NL80211_CMD_GET_WOWLAN,
16863 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16864 .doit = nl80211_get_wowlan,
16865 /* can be retrieved by unprivileged users */
16866 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16867 },
16868 {
16869 .cmd = NL80211_CMD_SET_WOWLAN,
16870 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16871 .doit = nl80211_set_wowlan,
16872 .flags = GENL_UNS_ADMIN_PERM,
16873 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16874 },
16875 #endif
16876 {
16877 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16878 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16879 .doit = nl80211_set_rekey_data,
16880 .flags = GENL_UNS_ADMIN_PERM,
16881 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16882 NL80211_FLAG_CLEAR_SKB),
16883 },
16884 {
16885 .cmd = NL80211_CMD_TDLS_MGMT,
16886 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16887 .doit = nl80211_tdls_mgmt,
16888 .flags = GENL_UNS_ADMIN_PERM,
16889 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16890 },
16891 {
16892 .cmd = NL80211_CMD_TDLS_OPER,
16893 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16894 .doit = nl80211_tdls_oper,
16895 .flags = GENL_UNS_ADMIN_PERM,
16896 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16897 },
16898 {
16899 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
16900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16901 .doit = nl80211_register_unexpected_frame,
16902 .flags = GENL_UNS_ADMIN_PERM,
16903 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16904 },
16905 {
16906 .cmd = NL80211_CMD_PROBE_CLIENT,
16907 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16908 .doit = nl80211_probe_client,
16909 .flags = GENL_UNS_ADMIN_PERM,
16910 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16911 },
16912 {
16913 .cmd = NL80211_CMD_REGISTER_BEACONS,
16914 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16915 .doit = nl80211_register_beacons,
16916 .flags = GENL_UNS_ADMIN_PERM,
16917 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16918 },
16919 {
16920 .cmd = NL80211_CMD_SET_NOACK_MAP,
16921 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16922 .doit = nl80211_set_noack_map,
16923 .flags = GENL_UNS_ADMIN_PERM,
16924 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16925 },
16926 {
16927 .cmd = NL80211_CMD_START_P2P_DEVICE,
16928 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16929 .doit = nl80211_start_p2p_device,
16930 .flags = GENL_UNS_ADMIN_PERM,
16931 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16932 NL80211_FLAG_NEED_RTNL),
16933 },
16934 {
16935 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
16936 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16937 .doit = nl80211_stop_p2p_device,
16938 .flags = GENL_UNS_ADMIN_PERM,
16939 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16940 NL80211_FLAG_NEED_RTNL),
16941 },
16942 {
16943 .cmd = NL80211_CMD_START_NAN,
16944 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16945 .doit = nl80211_start_nan,
16946 .flags = GENL_ADMIN_PERM,
16947 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16948 NL80211_FLAG_NEED_RTNL),
16949 },
16950 {
16951 .cmd = NL80211_CMD_STOP_NAN,
16952 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16953 .doit = nl80211_stop_nan,
16954 .flags = GENL_ADMIN_PERM,
16955 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16956 NL80211_FLAG_NEED_RTNL),
16957 },
16958 {
16959 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
16960 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16961 .doit = nl80211_nan_add_func,
16962 .flags = GENL_ADMIN_PERM,
16963 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16964 },
16965 {
16966 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
16967 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16968 .doit = nl80211_nan_del_func,
16969 .flags = GENL_ADMIN_PERM,
16970 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16971 },
16972 {
16973 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
16974 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16975 .doit = nl80211_nan_change_config,
16976 .flags = GENL_ADMIN_PERM,
16977 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16978 },
16979 {
16980 .cmd = NL80211_CMD_SET_MCAST_RATE,
16981 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16982 .doit = nl80211_set_mcast_rate,
16983 .flags = GENL_UNS_ADMIN_PERM,
16984 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16985 },
16986 {
16987 .cmd = NL80211_CMD_SET_MAC_ACL,
16988 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16989 .doit = nl80211_set_mac_acl,
16990 .flags = GENL_UNS_ADMIN_PERM,
16991 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16992 NL80211_FLAG_MLO_UNSUPPORTED),
16993 },
16994 {
16995 .cmd = NL80211_CMD_RADAR_DETECT,
16996 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16997 .doit = nl80211_start_radar_detection,
16998 .flags = GENL_UNS_ADMIN_PERM,
16999 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17000 NL80211_FLAG_NO_WIPHY_MTX |
17001 NL80211_FLAG_MLO_UNSUPPORTED),
17002 },
17003 {
17004 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17005 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17006 .doit = nl80211_get_protocol_features,
17007 },
17008 {
17009 .cmd = NL80211_CMD_UPDATE_FT_IES,
17010 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17011 .doit = nl80211_update_ft_ies,
17012 .flags = GENL_UNS_ADMIN_PERM,
17013 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17014 },
17015 {
17016 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17017 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17018 .doit = nl80211_crit_protocol_start,
17019 .flags = GENL_UNS_ADMIN_PERM,
17020 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17021 },
17022 {
17023 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17024 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17025 .doit = nl80211_crit_protocol_stop,
17026 .flags = GENL_UNS_ADMIN_PERM,
17027 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17028 },
17029 {
17030 .cmd = NL80211_CMD_GET_COALESCE,
17031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17032 .doit = nl80211_get_coalesce,
17033 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17034 },
17035 {
17036 .cmd = NL80211_CMD_SET_COALESCE,
17037 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17038 .doit = nl80211_set_coalesce,
17039 .flags = GENL_UNS_ADMIN_PERM,
17040 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17041 },
17042 {
17043 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17044 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17045 .doit = nl80211_channel_switch,
17046 .flags = GENL_UNS_ADMIN_PERM,
17047 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17048 NL80211_FLAG_MLO_VALID_LINK_ID),
17049 },
17050 {
17051 .cmd = NL80211_CMD_VENDOR,
17052 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17053 .doit = nl80211_vendor_cmd,
17054 .dumpit = nl80211_vendor_cmd_dump,
17055 .flags = GENL_UNS_ADMIN_PERM,
17056 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17057 NL80211_FLAG_CLEAR_SKB),
17058 },
17059 {
17060 .cmd = NL80211_CMD_SET_QOS_MAP,
17061 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17062 .doit = nl80211_set_qos_map,
17063 .flags = GENL_UNS_ADMIN_PERM,
17064 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17065 },
17066 {
17067 .cmd = NL80211_CMD_ADD_TX_TS,
17068 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17069 .doit = nl80211_add_tx_ts,
17070 .flags = GENL_UNS_ADMIN_PERM,
17071 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17072 NL80211_FLAG_MLO_UNSUPPORTED),
17073 },
17074 {
17075 .cmd = NL80211_CMD_DEL_TX_TS,
17076 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17077 .doit = nl80211_del_tx_ts,
17078 .flags = GENL_UNS_ADMIN_PERM,
17079 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17080 },
17081 {
17082 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17083 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17084 .doit = nl80211_tdls_channel_switch,
17085 .flags = GENL_UNS_ADMIN_PERM,
17086 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17087 },
17088 {
17089 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17090 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17091 .doit = nl80211_tdls_cancel_channel_switch,
17092 .flags = GENL_UNS_ADMIN_PERM,
17093 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17094 },
17095 {
17096 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17097 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17098 .doit = nl80211_set_multicast_to_unicast,
17099 .flags = GENL_UNS_ADMIN_PERM,
17100 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17101 },
17102 {
17103 .cmd = NL80211_CMD_SET_PMK,
17104 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17105 .doit = nl80211_set_pmk,
17106 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17107 NL80211_FLAG_CLEAR_SKB),
17108 },
17109 {
17110 .cmd = NL80211_CMD_DEL_PMK,
17111 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17112 .doit = nl80211_del_pmk,
17113 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17114 },
17115 {
17116 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17117 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17118 .doit = nl80211_external_auth,
17119 .flags = GENL_ADMIN_PERM,
17120 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17121 },
17122 {
17123 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17124 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17125 .doit = nl80211_tx_control_port,
17126 .flags = GENL_UNS_ADMIN_PERM,
17127 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17128 },
17129 {
17130 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17131 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17132 .doit = nl80211_get_ftm_responder_stats,
17133 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17134 NL80211_FLAG_MLO_VALID_LINK_ID),
17135 },
17136 {
17137 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17138 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17139 .doit = nl80211_pmsr_start,
17140 .flags = GENL_UNS_ADMIN_PERM,
17141 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17142 },
17143 {
17144 .cmd = NL80211_CMD_NOTIFY_RADAR,
17145 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17146 .doit = nl80211_notify_radar_detection,
17147 .flags = GENL_UNS_ADMIN_PERM,
17148 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17149 },
17150 {
17151 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17152 .doit = nl80211_update_owe_info,
17153 .flags = GENL_ADMIN_PERM,
17154 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17155 },
17156 {
17157 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17158 .doit = nl80211_probe_mesh_link,
17159 .flags = GENL_UNS_ADMIN_PERM,
17160 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17161 },
17162 {
17163 .cmd = NL80211_CMD_SET_TID_CONFIG,
17164 .doit = nl80211_set_tid_config,
17165 .flags = GENL_UNS_ADMIN_PERM,
17166 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17167 NL80211_FLAG_MLO_VALID_LINK_ID),
17168 },
17169 {
17170 .cmd = NL80211_CMD_SET_SAR_SPECS,
17171 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17172 .doit = nl80211_set_sar_specs,
17173 .flags = GENL_UNS_ADMIN_PERM,
17174 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17175 NL80211_FLAG_NEED_RTNL),
17176 },
17177 {
17178 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17179 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17180 .doit = nl80211_color_change,
17181 .flags = GENL_UNS_ADMIN_PERM,
17182 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17183 },
17184 {
17185 .cmd = NL80211_CMD_SET_FILS_AAD,
17186 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17187 .doit = nl80211_set_fils_aad,
17188 .flags = GENL_UNS_ADMIN_PERM,
17189 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17190 },
17191 {
17192 .cmd = NL80211_CMD_ADD_LINK,
17193 .doit = nl80211_add_link,
17194 .flags = GENL_UNS_ADMIN_PERM,
17195 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17196 },
17197 {
17198 .cmd = NL80211_CMD_REMOVE_LINK,
17199 .doit = nl80211_remove_link,
17200 .flags = GENL_UNS_ADMIN_PERM,
17201 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17202 NL80211_FLAG_MLO_VALID_LINK_ID),
17203 },
17204 {
17205 .cmd = NL80211_CMD_ADD_LINK_STA,
17206 .doit = nl80211_add_link_station,
17207 .flags = GENL_UNS_ADMIN_PERM,
17208 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17209 NL80211_FLAG_MLO_VALID_LINK_ID),
17210 },
17211 {
17212 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17213 .doit = nl80211_modify_link_station,
17214 .flags = GENL_UNS_ADMIN_PERM,
17215 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17216 NL80211_FLAG_MLO_VALID_LINK_ID),
17217 },
17218 {
17219 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17220 .doit = nl80211_remove_link_station,
17221 .flags = GENL_UNS_ADMIN_PERM,
17222 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17223 NL80211_FLAG_MLO_VALID_LINK_ID),
17224 },
17225 };
17226
17227 static struct genl_family nl80211_fam __ro_after_init = {
17228 .name = NL80211_GENL_NAME, /* have users key off the name instead */
17229 .hdrsize = 0, /* no private header */
17230 .version = 1, /* no particular meaning now */
17231 .maxattr = NL80211_ATTR_MAX,
17232 .policy = nl80211_policy,
17233 .netnsok = true,
17234 .pre_doit = nl80211_pre_doit,
17235 .post_doit = nl80211_post_doit,
17236 .module = THIS_MODULE,
17237 .ops = nl80211_ops,
17238 .n_ops = ARRAY_SIZE(nl80211_ops),
17239 .small_ops = nl80211_small_ops,
17240 .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17241 .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17242 .mcgrps = nl80211_mcgrps,
17243 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17244 .parallel_ops = true,
17245 };
17246
17247 /* notification functions */
17248
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)17249 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17250 enum nl80211_commands cmd)
17251 {
17252 struct sk_buff *msg;
17253 struct nl80211_dump_wiphy_state state = {};
17254
17255 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17256 cmd != NL80211_CMD_DEL_WIPHY);
17257
17258 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17259 if (!msg)
17260 return;
17261
17262 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17263 nlmsg_free(msg);
17264 return;
17265 }
17266
17267 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17268 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17269 }
17270
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)17271 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17272 struct wireless_dev *wdev,
17273 enum nl80211_commands cmd)
17274 {
17275 struct sk_buff *msg;
17276
17277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17278 if (!msg)
17279 return;
17280
17281 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17282 nlmsg_free(msg);
17283 return;
17284 }
17285
17286 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17287 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17288 }
17289
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)17290 static int nl80211_add_scan_req(struct sk_buff *msg,
17291 struct cfg80211_registered_device *rdev)
17292 {
17293 struct cfg80211_scan_request *req = rdev->scan_req;
17294 struct nlattr *nest;
17295 int i;
17296 struct cfg80211_scan_info *info;
17297
17298 if (WARN_ON(!req))
17299 return 0;
17300
17301 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17302 if (!nest)
17303 goto nla_put_failure;
17304 for (i = 0; i < req->n_ssids; i++) {
17305 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17306 goto nla_put_failure;
17307 }
17308 nla_nest_end(msg, nest);
17309
17310 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17311 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17312 if (!nest)
17313 goto nla_put_failure;
17314 for (i = 0; i < req->n_channels; i++) {
17315 if (nla_put_u32(msg, i,
17316 ieee80211_channel_to_khz(req->channels[i])))
17317 goto nla_put_failure;
17318 }
17319 nla_nest_end(msg, nest);
17320 } else {
17321 nest = nla_nest_start_noflag(msg,
17322 NL80211_ATTR_SCAN_FREQUENCIES);
17323 if (!nest)
17324 goto nla_put_failure;
17325 for (i = 0; i < req->n_channels; i++) {
17326 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17327 goto nla_put_failure;
17328 }
17329 nla_nest_end(msg, nest);
17330 }
17331
17332 if (req->ie &&
17333 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17334 goto nla_put_failure;
17335
17336 if (req->flags &&
17337 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17338 goto nla_put_failure;
17339
17340 info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17341 &rdev->scan_req->info;
17342 if (info->scan_start_tsf &&
17343 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17344 info->scan_start_tsf, NL80211_BSS_PAD) ||
17345 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17346 info->tsf_bssid)))
17347 goto nla_put_failure;
17348
17349 return 0;
17350 nla_put_failure:
17351 return -ENOBUFS;
17352 }
17353
nl80211_prep_scan_msg(struct sk_buff * msg,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 portid,u32 seq,int flags,u32 cmd)17354 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17355 struct cfg80211_registered_device *rdev,
17356 struct wireless_dev *wdev,
17357 u32 portid, u32 seq, int flags,
17358 u32 cmd)
17359 {
17360 void *hdr;
17361
17362 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17363 if (!hdr)
17364 return -1;
17365
17366 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17367 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17368 wdev->netdev->ifindex)) ||
17369 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17370 NL80211_ATTR_PAD))
17371 goto nla_put_failure;
17372
17373 /* ignore errors and send incomplete event anyway */
17374 nl80211_add_scan_req(msg, rdev);
17375
17376 genlmsg_end(msg, hdr);
17377 return 0;
17378
17379 nla_put_failure:
17380 genlmsg_cancel(msg, hdr);
17381 return -EMSGSIZE;
17382 }
17383
17384 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)17385 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17386 struct cfg80211_sched_scan_request *req, u32 cmd)
17387 {
17388 void *hdr;
17389
17390 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17391 if (!hdr)
17392 return -1;
17393
17394 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17395 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17396 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17397 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17398 NL80211_ATTR_PAD))
17399 goto nla_put_failure;
17400
17401 genlmsg_end(msg, hdr);
17402 return 0;
17403
17404 nla_put_failure:
17405 genlmsg_cancel(msg, hdr);
17406 return -EMSGSIZE;
17407 }
17408
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)17409 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17410 struct wireless_dev *wdev)
17411 {
17412 struct sk_buff *msg;
17413
17414 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17415 if (!msg)
17416 return;
17417
17418 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17419 NL80211_CMD_TRIGGER_SCAN) < 0) {
17420 nlmsg_free(msg);
17421 return;
17422 }
17423
17424 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17425 NL80211_MCGRP_SCAN, GFP_KERNEL);
17426 }
17427
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)17428 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17429 struct wireless_dev *wdev, bool aborted)
17430 {
17431 struct sk_buff *msg;
17432
17433 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17434 if (!msg)
17435 return NULL;
17436
17437 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17438 aborted ? NL80211_CMD_SCAN_ABORTED :
17439 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17440 nlmsg_free(msg);
17441 return NULL;
17442 }
17443
17444 return msg;
17445 }
17446
17447 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)17448 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17449 struct sk_buff *msg)
17450 {
17451 if (!msg)
17452 return;
17453
17454 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17455 NL80211_MCGRP_SCAN, GFP_KERNEL);
17456 }
17457
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)17458 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17459 {
17460 struct sk_buff *msg;
17461
17462 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17463 if (!msg)
17464 return;
17465
17466 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17467 nlmsg_free(msg);
17468 return;
17469 }
17470
17471 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17472 NL80211_MCGRP_SCAN, GFP_KERNEL);
17473 }
17474
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)17475 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17476 struct regulatory_request *request)
17477 {
17478 /* Userspace can always count this one always being set */
17479 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17480 goto nla_put_failure;
17481
17482 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17483 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17484 NL80211_REGDOM_TYPE_WORLD))
17485 goto nla_put_failure;
17486 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17487 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17488 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17489 goto nla_put_failure;
17490 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17491 request->intersect) {
17492 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17493 NL80211_REGDOM_TYPE_INTERSECTION))
17494 goto nla_put_failure;
17495 } else {
17496 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17497 NL80211_REGDOM_TYPE_COUNTRY) ||
17498 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17499 request->alpha2))
17500 goto nla_put_failure;
17501 }
17502
17503 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17504 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17505
17506 if (wiphy &&
17507 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17508 goto nla_put_failure;
17509
17510 if (wiphy &&
17511 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17512 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17513 goto nla_put_failure;
17514 }
17515
17516 return true;
17517
17518 nla_put_failure:
17519 return false;
17520 }
17521
17522 /*
17523 * This can happen on global regulatory changes or device specific settings
17524 * based on custom regulatory domains.
17525 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)17526 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17527 struct regulatory_request *request)
17528 {
17529 struct sk_buff *msg;
17530 void *hdr;
17531
17532 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17533 if (!msg)
17534 return;
17535
17536 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17537 if (!hdr)
17538 goto nla_put_failure;
17539
17540 if (!nl80211_reg_change_event_fill(msg, request))
17541 goto nla_put_failure;
17542
17543 genlmsg_end(msg, hdr);
17544
17545 rcu_read_lock();
17546 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17547 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17548 rcu_read_unlock();
17549
17550 return;
17551
17552 nla_put_failure:
17553 nlmsg_free(msg);
17554 }
17555
nl80211_send_mlme_event(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,enum nl80211_commands cmd,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len,bool reconnect)17556 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17557 struct net_device *netdev,
17558 const u8 *buf, size_t len,
17559 enum nl80211_commands cmd, gfp_t gfp,
17560 int uapsd_queues, const u8 *req_ies,
17561 size_t req_ies_len, bool reconnect)
17562 {
17563 struct sk_buff *msg;
17564 void *hdr;
17565
17566 msg = nlmsg_new(100 + len + req_ies_len, gfp);
17567 if (!msg)
17568 return;
17569
17570 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17571 if (!hdr) {
17572 nlmsg_free(msg);
17573 return;
17574 }
17575
17576 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17577 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17578 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17579 (req_ies &&
17580 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17581 goto nla_put_failure;
17582
17583 if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17584 goto nla_put_failure;
17585
17586 if (uapsd_queues >= 0) {
17587 struct nlattr *nla_wmm =
17588 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17589 if (!nla_wmm)
17590 goto nla_put_failure;
17591
17592 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17593 uapsd_queues))
17594 goto nla_put_failure;
17595
17596 nla_nest_end(msg, nla_wmm);
17597 }
17598
17599 genlmsg_end(msg, hdr);
17600
17601 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17602 NL80211_MCGRP_MLME, gfp);
17603 return;
17604
17605 nla_put_failure:
17606 nlmsg_free(msg);
17607 }
17608
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)17609 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17610 struct net_device *netdev, const u8 *buf,
17611 size_t len, gfp_t gfp)
17612 {
17613 nl80211_send_mlme_event(rdev, netdev, buf, len,
17614 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17615 false);
17616 }
17617
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_rx_assoc_resp * data)17618 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17619 struct net_device *netdev,
17620 struct cfg80211_rx_assoc_resp *data)
17621 {
17622 nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17623 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17624 data->uapsd_queues,
17625 data->req_ies, data->req_ies_len, false);
17626 }
17627
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)17628 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17629 struct net_device *netdev, const u8 *buf,
17630 size_t len, bool reconnect, gfp_t gfp)
17631 {
17632 nl80211_send_mlme_event(rdev, netdev, buf, len,
17633 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17634 reconnect);
17635 }
17636
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,bool reconnect,gfp_t gfp)17637 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17638 struct net_device *netdev, const u8 *buf,
17639 size_t len, bool reconnect, gfp_t gfp)
17640 {
17641 nl80211_send_mlme_event(rdev, netdev, buf, len,
17642 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17643 reconnect);
17644 }
17645
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)17646 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17647 size_t len)
17648 {
17649 struct wireless_dev *wdev = dev->ieee80211_ptr;
17650 struct wiphy *wiphy = wdev->wiphy;
17651 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17652 const struct ieee80211_mgmt *mgmt = (void *)buf;
17653 u32 cmd;
17654
17655 if (WARN_ON(len < 2))
17656 return;
17657
17658 if (ieee80211_is_deauth(mgmt->frame_control)) {
17659 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17660 } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17661 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17662 } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17663 if (wdev->unprot_beacon_reported &&
17664 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17665 return;
17666 cmd = NL80211_CMD_UNPROT_BEACON;
17667 wdev->unprot_beacon_reported = jiffies;
17668 } else {
17669 return;
17670 }
17671
17672 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17673 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17674 NULL, 0, false);
17675 }
17676 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17677
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)17678 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17679 struct net_device *netdev, int cmd,
17680 const u8 *addr, gfp_t gfp)
17681 {
17682 struct sk_buff *msg;
17683 void *hdr;
17684
17685 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17686 if (!msg)
17687 return;
17688
17689 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17690 if (!hdr) {
17691 nlmsg_free(msg);
17692 return;
17693 }
17694
17695 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17696 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17697 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17698 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17699 goto nla_put_failure;
17700
17701 genlmsg_end(msg, hdr);
17702
17703 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17704 NL80211_MCGRP_MLME, gfp);
17705 return;
17706
17707 nla_put_failure:
17708 nlmsg_free(msg);
17709 }
17710
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)17711 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17712 struct net_device *netdev, const u8 *addr,
17713 gfp_t gfp)
17714 {
17715 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17716 addr, gfp);
17717 }
17718
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)17719 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17720 struct net_device *netdev, const u8 *addr,
17721 gfp_t gfp)
17722 {
17723 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17724 addr, gfp);
17725 }
17726
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)17727 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17728 struct net_device *netdev,
17729 struct cfg80211_connect_resp_params *cr,
17730 gfp_t gfp)
17731 {
17732 struct sk_buff *msg;
17733 void *hdr;
17734 unsigned int link;
17735 size_t link_info_size = 0;
17736 const u8 *connected_addr = cr->valid_links ?
17737 cr->ap_mld_addr : cr->links[0].bssid;
17738
17739 if (cr->valid_links) {
17740 for_each_valid_link(cr, link) {
17741 /* Nested attribute header */
17742 link_info_size += NLA_HDRLEN;
17743 /* Link ID */
17744 link_info_size += nla_total_size(sizeof(u8));
17745 link_info_size += cr->links[link].addr ?
17746 nla_total_size(ETH_ALEN) : 0;
17747 link_info_size += (cr->links[link].bssid ||
17748 cr->links[link].bss) ?
17749 nla_total_size(ETH_ALEN) : 0;
17750 }
17751 }
17752
17753 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17754 cr->fils.kek_len + cr->fils.pmk_len +
17755 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17756 gfp);
17757 if (!msg)
17758 return;
17759
17760 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17761 if (!hdr) {
17762 nlmsg_free(msg);
17763 return;
17764 }
17765
17766 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17767 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17768 (connected_addr &&
17769 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17770 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17771 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17772 cr->status) ||
17773 (cr->status < 0 &&
17774 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17775 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17776 cr->timeout_reason))) ||
17777 (cr->req_ie &&
17778 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17779 (cr->resp_ie &&
17780 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17781 cr->resp_ie)) ||
17782 (cr->fils.update_erp_next_seq_num &&
17783 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17784 cr->fils.erp_next_seq_num)) ||
17785 (cr->status == WLAN_STATUS_SUCCESS &&
17786 ((cr->fils.kek &&
17787 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17788 cr->fils.kek)) ||
17789 (cr->fils.pmk &&
17790 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17791 (cr->fils.pmkid &&
17792 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17793 goto nla_put_failure;
17794
17795 if (cr->valid_links) {
17796 int i = 1;
17797 struct nlattr *nested;
17798
17799 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17800 if (!nested)
17801 goto nla_put_failure;
17802
17803 for_each_valid_link(cr, link) {
17804 struct nlattr *nested_mlo_links;
17805 const u8 *bssid = cr->links[link].bss ?
17806 cr->links[link].bss->bssid :
17807 cr->links[link].bssid;
17808
17809 nested_mlo_links = nla_nest_start(msg, i);
17810 if (!nested_mlo_links)
17811 goto nla_put_failure;
17812
17813 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17814 (bssid &&
17815 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17816 (cr->links[link].addr &&
17817 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17818 cr->links[link].addr)))
17819 goto nla_put_failure;
17820
17821 nla_nest_end(msg, nested_mlo_links);
17822 i++;
17823 }
17824 nla_nest_end(msg, nested);
17825 }
17826
17827 genlmsg_end(msg, hdr);
17828
17829 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17830 NL80211_MCGRP_MLME, gfp);
17831 return;
17832
17833 nla_put_failure:
17834 nlmsg_free(msg);
17835 }
17836
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)17837 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17838 struct net_device *netdev,
17839 struct cfg80211_roam_info *info, gfp_t gfp)
17840 {
17841 struct sk_buff *msg;
17842 void *hdr;
17843 size_t link_info_size = 0;
17844 unsigned int link;
17845 const u8 *connected_addr = info->ap_mld_addr ?
17846 info->ap_mld_addr :
17847 (info->links[0].bss ?
17848 info->links[0].bss->bssid :
17849 info->links[0].bssid);
17850
17851 if (info->valid_links) {
17852 for_each_valid_link(info, link) {
17853 /* Nested attribute header */
17854 link_info_size += NLA_HDRLEN;
17855 /* Link ID */
17856 link_info_size += nla_total_size(sizeof(u8));
17857 link_info_size += info->links[link].addr ?
17858 nla_total_size(ETH_ALEN) : 0;
17859 link_info_size += (info->links[link].bssid ||
17860 info->links[link].bss) ?
17861 nla_total_size(ETH_ALEN) : 0;
17862 }
17863 }
17864
17865 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17866 info->fils.kek_len + info->fils.pmk_len +
17867 (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17868 link_info_size, gfp);
17869 if (!msg)
17870 return;
17871
17872 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17873 if (!hdr) {
17874 nlmsg_free(msg);
17875 return;
17876 }
17877
17878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17880 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17881 (info->req_ie &&
17882 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
17883 info->req_ie)) ||
17884 (info->resp_ie &&
17885 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
17886 info->resp_ie)) ||
17887 (info->fils.update_erp_next_seq_num &&
17888 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17889 info->fils.erp_next_seq_num)) ||
17890 (info->fils.kek &&
17891 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
17892 info->fils.kek)) ||
17893 (info->fils.pmk &&
17894 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
17895 (info->fils.pmkid &&
17896 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
17897 goto nla_put_failure;
17898
17899 if (info->valid_links) {
17900 int i = 1;
17901 struct nlattr *nested;
17902
17903 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17904 if (!nested)
17905 goto nla_put_failure;
17906
17907 for_each_valid_link(info, link) {
17908 struct nlattr *nested_mlo_links;
17909 const u8 *bssid = info->links[link].bss ?
17910 info->links[link].bss->bssid :
17911 info->links[link].bssid;
17912
17913 nested_mlo_links = nla_nest_start(msg, i);
17914 if (!nested_mlo_links)
17915 goto nla_put_failure;
17916
17917 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17918 (bssid &&
17919 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17920 (info->links[link].addr &&
17921 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17922 info->links[link].addr)))
17923 goto nla_put_failure;
17924
17925 nla_nest_end(msg, nested_mlo_links);
17926 i++;
17927 }
17928 nla_nest_end(msg, nested);
17929 }
17930
17931 genlmsg_end(msg, hdr);
17932
17933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17934 NL80211_MCGRP_MLME, gfp);
17935 return;
17936
17937 nla_put_failure:
17938 nlmsg_free(msg);
17939 }
17940
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid)17941 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
17942 struct net_device *netdev, const u8 *bssid)
17943 {
17944 struct sk_buff *msg;
17945 void *hdr;
17946
17947 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17948 if (!msg)
17949 return;
17950
17951 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
17952 if (!hdr) {
17953 nlmsg_free(msg);
17954 return;
17955 }
17956
17957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17958 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17959 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17960 goto nla_put_failure;
17961
17962 genlmsg_end(msg, hdr);
17963
17964 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17965 NL80211_MCGRP_MLME, GFP_KERNEL);
17966 return;
17967
17968 nla_put_failure:
17969 nlmsg_free(msg);
17970 }
17971
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)17972 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
17973 struct net_device *netdev, u16 reason,
17974 const u8 *ie, size_t ie_len, bool from_ap)
17975 {
17976 struct sk_buff *msg;
17977 void *hdr;
17978
17979 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
17980 if (!msg)
17981 return;
17982
17983 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
17984 if (!hdr) {
17985 nlmsg_free(msg);
17986 return;
17987 }
17988
17989 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17990 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17991 (reason &&
17992 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
17993 (from_ap &&
17994 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
17995 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
17996 goto nla_put_failure;
17997
17998 genlmsg_end(msg, hdr);
17999
18000 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18001 NL80211_MCGRP_MLME, GFP_KERNEL);
18002 return;
18003
18004 nla_put_failure:
18005 nlmsg_free(msg);
18006 }
18007
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)18008 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18009 struct net_device *netdev, const u8 *bssid,
18010 gfp_t gfp)
18011 {
18012 struct sk_buff *msg;
18013 void *hdr;
18014
18015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18016 if (!msg)
18017 return;
18018
18019 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18020 if (!hdr) {
18021 nlmsg_free(msg);
18022 return;
18023 }
18024
18025 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18026 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18027 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18028 goto nla_put_failure;
18029
18030 genlmsg_end(msg, hdr);
18031
18032 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18033 NL80211_MCGRP_MLME, gfp);
18034 return;
18035
18036 nla_put_failure:
18037 nlmsg_free(msg);
18038 }
18039
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)18040 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18041 const u8 *ie, u8 ie_len,
18042 int sig_dbm, gfp_t gfp)
18043 {
18044 struct wireless_dev *wdev = dev->ieee80211_ptr;
18045 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18046 struct sk_buff *msg;
18047 void *hdr;
18048
18049 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18050 return;
18051
18052 trace_cfg80211_notify_new_peer_candidate(dev, addr);
18053
18054 msg = nlmsg_new(100 + ie_len, gfp);
18055 if (!msg)
18056 return;
18057
18058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18059 if (!hdr) {
18060 nlmsg_free(msg);
18061 return;
18062 }
18063
18064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18065 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18066 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18067 (ie_len && ie &&
18068 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18069 (sig_dbm &&
18070 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18071 goto nla_put_failure;
18072
18073 genlmsg_end(msg, hdr);
18074
18075 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18076 NL80211_MCGRP_MLME, gfp);
18077 return;
18078
18079 nla_put_failure:
18080 nlmsg_free(msg);
18081 }
18082 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18083
nl80211_michael_mic_failure(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,enum nl80211_key_type key_type,int key_id,const u8 * tsc,gfp_t gfp)18084 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18085 struct net_device *netdev, const u8 *addr,
18086 enum nl80211_key_type key_type, int key_id,
18087 const u8 *tsc, gfp_t gfp)
18088 {
18089 struct sk_buff *msg;
18090 void *hdr;
18091
18092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18093 if (!msg)
18094 return;
18095
18096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18097 if (!hdr) {
18098 nlmsg_free(msg);
18099 return;
18100 }
18101
18102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18103 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18104 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18105 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18106 (key_id != -1 &&
18107 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18108 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18109 goto nla_put_failure;
18110
18111 genlmsg_end(msg, hdr);
18112
18113 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18114 NL80211_MCGRP_MLME, gfp);
18115 return;
18116
18117 nla_put_failure:
18118 nlmsg_free(msg);
18119 }
18120
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)18121 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18122 struct ieee80211_channel *channel_before,
18123 struct ieee80211_channel *channel_after)
18124 {
18125 struct sk_buff *msg;
18126 void *hdr;
18127 struct nlattr *nl_freq;
18128
18129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18130 if (!msg)
18131 return;
18132
18133 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18134 if (!hdr) {
18135 nlmsg_free(msg);
18136 return;
18137 }
18138
18139 /*
18140 * Since we are applying the beacon hint to a wiphy we know its
18141 * wiphy_idx is valid
18142 */
18143 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18144 goto nla_put_failure;
18145
18146 /* Before */
18147 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18148 if (!nl_freq)
18149 goto nla_put_failure;
18150
18151 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18152 goto nla_put_failure;
18153 nla_nest_end(msg, nl_freq);
18154
18155 /* After */
18156 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18157 if (!nl_freq)
18158 goto nla_put_failure;
18159
18160 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18161 goto nla_put_failure;
18162 nla_nest_end(msg, nl_freq);
18163
18164 genlmsg_end(msg, hdr);
18165
18166 rcu_read_lock();
18167 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18168 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18169 rcu_read_unlock();
18170
18171 return;
18172
18173 nla_put_failure:
18174 nlmsg_free(msg);
18175 }
18176
nl80211_send_remain_on_chan_event(int cmd,struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)18177 static void nl80211_send_remain_on_chan_event(
18178 int cmd, struct cfg80211_registered_device *rdev,
18179 struct wireless_dev *wdev, u64 cookie,
18180 struct ieee80211_channel *chan,
18181 unsigned int duration, gfp_t gfp)
18182 {
18183 struct sk_buff *msg;
18184 void *hdr;
18185
18186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18187 if (!msg)
18188 return;
18189
18190 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18191 if (!hdr) {
18192 nlmsg_free(msg);
18193 return;
18194 }
18195
18196 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18197 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18198 wdev->netdev->ifindex)) ||
18199 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18200 NL80211_ATTR_PAD) ||
18201 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18202 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18203 NL80211_CHAN_NO_HT) ||
18204 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18205 NL80211_ATTR_PAD))
18206 goto nla_put_failure;
18207
18208 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18209 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18210 goto nla_put_failure;
18211
18212 genlmsg_end(msg, hdr);
18213
18214 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18215 NL80211_MCGRP_MLME, gfp);
18216 return;
18217
18218 nla_put_failure:
18219 nlmsg_free(msg);
18220 }
18221
cfg80211_assoc_comeback(struct net_device * netdev,const u8 * ap_addr,u32 timeout)18222 void cfg80211_assoc_comeback(struct net_device *netdev,
18223 const u8 *ap_addr, u32 timeout)
18224 {
18225 struct wireless_dev *wdev = netdev->ieee80211_ptr;
18226 struct wiphy *wiphy = wdev->wiphy;
18227 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18228 struct sk_buff *msg;
18229 void *hdr;
18230
18231 trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18232
18233 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18234 if (!msg)
18235 return;
18236
18237 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18238 if (!hdr) {
18239 nlmsg_free(msg);
18240 return;
18241 }
18242
18243 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18244 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18245 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18246 nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18247 goto nla_put_failure;
18248
18249 genlmsg_end(msg, hdr);
18250
18251 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18252 NL80211_MCGRP_MLME, GFP_KERNEL);
18253 return;
18254
18255 nla_put_failure:
18256 nlmsg_free(msg);
18257 }
18258 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18259
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)18260 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18261 struct ieee80211_channel *chan,
18262 unsigned int duration, gfp_t gfp)
18263 {
18264 struct wiphy *wiphy = wdev->wiphy;
18265 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18266
18267 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18268 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18269 rdev, wdev, cookie, chan,
18270 duration, gfp);
18271 }
18272 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18273
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18274 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18275 struct ieee80211_channel *chan,
18276 gfp_t gfp)
18277 {
18278 struct wiphy *wiphy = wdev->wiphy;
18279 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18280
18281 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18282 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18283 rdev, wdev, cookie, chan, 0, gfp);
18284 }
18285 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18286
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)18287 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18288 struct ieee80211_channel *chan,
18289 gfp_t gfp)
18290 {
18291 struct wiphy *wiphy = wdev->wiphy;
18292 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18293
18294 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18295 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18296 rdev, wdev, cookie, chan, 0, gfp);
18297 }
18298 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18299
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18300 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18301 struct station_info *sinfo, gfp_t gfp)
18302 {
18303 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18304 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18305 struct sk_buff *msg;
18306
18307 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18308
18309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18310 if (!msg)
18311 return;
18312
18313 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18314 rdev, dev, mac_addr, sinfo) < 0) {
18315 nlmsg_free(msg);
18316 return;
18317 }
18318
18319 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18320 NL80211_MCGRP_MLME, gfp);
18321 }
18322 EXPORT_SYMBOL(cfg80211_new_sta);
18323
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)18324 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18325 struct station_info *sinfo, gfp_t gfp)
18326 {
18327 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18328 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18329 struct sk_buff *msg;
18330 struct station_info empty_sinfo = {};
18331
18332 if (!sinfo)
18333 sinfo = &empty_sinfo;
18334
18335 trace_cfg80211_del_sta(dev, mac_addr);
18336
18337 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18338 if (!msg) {
18339 cfg80211_sinfo_release_content(sinfo);
18340 return;
18341 }
18342
18343 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18344 rdev, dev, mac_addr, sinfo) < 0) {
18345 nlmsg_free(msg);
18346 return;
18347 }
18348
18349 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18350 NL80211_MCGRP_MLME, gfp);
18351 }
18352 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18353
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)18354 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18355 enum nl80211_connect_failed_reason reason,
18356 gfp_t gfp)
18357 {
18358 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18359 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18360 struct sk_buff *msg;
18361 void *hdr;
18362
18363 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18364 if (!msg)
18365 return;
18366
18367 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18368 if (!hdr) {
18369 nlmsg_free(msg);
18370 return;
18371 }
18372
18373 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18374 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18375 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18376 goto nla_put_failure;
18377
18378 genlmsg_end(msg, hdr);
18379
18380 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18381 NL80211_MCGRP_MLME, gfp);
18382 return;
18383
18384 nla_put_failure:
18385 nlmsg_free(msg);
18386 }
18387 EXPORT_SYMBOL(cfg80211_conn_failed);
18388
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)18389 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18390 const u8 *addr, gfp_t gfp)
18391 {
18392 struct wireless_dev *wdev = dev->ieee80211_ptr;
18393 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18394 struct sk_buff *msg;
18395 void *hdr;
18396 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18397
18398 if (!nlportid)
18399 return false;
18400
18401 msg = nlmsg_new(100, gfp);
18402 if (!msg)
18403 return true;
18404
18405 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18406 if (!hdr) {
18407 nlmsg_free(msg);
18408 return true;
18409 }
18410
18411 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18412 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18413 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18414 goto nla_put_failure;
18415
18416 genlmsg_end(msg, hdr);
18417 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18418 return true;
18419
18420 nla_put_failure:
18421 nlmsg_free(msg);
18422 return true;
18423 }
18424
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18425 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18426 const u8 *addr, gfp_t gfp)
18427 {
18428 struct wireless_dev *wdev = dev->ieee80211_ptr;
18429 bool ret;
18430
18431 trace_cfg80211_rx_spurious_frame(dev, addr);
18432
18433 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18434 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18435 trace_cfg80211_return_bool(false);
18436 return false;
18437 }
18438 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18439 addr, gfp);
18440 trace_cfg80211_return_bool(ret);
18441 return ret;
18442 }
18443 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18444
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)18445 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18446 const u8 *addr, gfp_t gfp)
18447 {
18448 struct wireless_dev *wdev = dev->ieee80211_ptr;
18449 bool ret;
18450
18451 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18452
18453 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18454 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18455 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18456 trace_cfg80211_return_bool(false);
18457 return false;
18458 }
18459 ret = __nl80211_unexpected_frame(dev,
18460 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18461 addr, gfp);
18462 trace_cfg80211_return_bool(ret);
18463 return ret;
18464 }
18465 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18466
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,struct cfg80211_rx_info * info,gfp_t gfp)18467 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18468 struct wireless_dev *wdev, u32 nlportid,
18469 struct cfg80211_rx_info *info, gfp_t gfp)
18470 {
18471 struct net_device *netdev = wdev->netdev;
18472 struct sk_buff *msg;
18473 void *hdr;
18474
18475 msg = nlmsg_new(100 + info->len, gfp);
18476 if (!msg)
18477 return -ENOMEM;
18478
18479 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18480 if (!hdr) {
18481 nlmsg_free(msg);
18482 return -ENOMEM;
18483 }
18484
18485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18486 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18487 netdev->ifindex)) ||
18488 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18489 NL80211_ATTR_PAD) ||
18490 (info->have_link_id &&
18491 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18492 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18493 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18494 (info->sig_dbm &&
18495 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18496 nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18497 (info->flags &&
18498 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18499 (info->rx_tstamp && nla_put_u64_64bit(msg,
18500 NL80211_ATTR_RX_HW_TIMESTAMP,
18501 info->rx_tstamp,
18502 NL80211_ATTR_PAD)) ||
18503 (info->ack_tstamp && nla_put_u64_64bit(msg,
18504 NL80211_ATTR_TX_HW_TIMESTAMP,
18505 info->ack_tstamp,
18506 NL80211_ATTR_PAD)))
18507 goto nla_put_failure;
18508
18509 genlmsg_end(msg, hdr);
18510
18511 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18512
18513 nla_put_failure:
18514 nlmsg_free(msg);
18515 return -ENOBUFS;
18516 }
18517
nl80211_frame_tx_status(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp,enum nl80211_commands command)18518 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18519 struct cfg80211_tx_status *status,
18520 gfp_t gfp, enum nl80211_commands command)
18521 {
18522 struct wiphy *wiphy = wdev->wiphy;
18523 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18524 struct net_device *netdev = wdev->netdev;
18525 struct sk_buff *msg;
18526 void *hdr;
18527
18528 if (command == NL80211_CMD_FRAME_TX_STATUS)
18529 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18530 status->ack);
18531 else
18532 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18533 status->ack);
18534
18535 msg = nlmsg_new(100 + status->len, gfp);
18536 if (!msg)
18537 return;
18538
18539 hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18540 if (!hdr) {
18541 nlmsg_free(msg);
18542 return;
18543 }
18544
18545 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18546 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18547 netdev->ifindex)) ||
18548 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18549 NL80211_ATTR_PAD) ||
18550 nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18551 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18552 NL80211_ATTR_PAD) ||
18553 (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18554 (status->tx_tstamp &&
18555 nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18556 status->tx_tstamp, NL80211_ATTR_PAD)) ||
18557 (status->ack_tstamp &&
18558 nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18559 status->ack_tstamp, NL80211_ATTR_PAD)))
18560 goto nla_put_failure;
18561
18562 genlmsg_end(msg, hdr);
18563
18564 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18565 NL80211_MCGRP_MLME, gfp);
18566 return;
18567
18568 nla_put_failure:
18569 nlmsg_free(msg);
18570 }
18571
cfg80211_control_port_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)18572 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18573 const u8 *buf, size_t len, bool ack,
18574 gfp_t gfp)
18575 {
18576 struct cfg80211_tx_status status = {
18577 .cookie = cookie,
18578 .buf = buf,
18579 .len = len,
18580 .ack = ack
18581 };
18582
18583 nl80211_frame_tx_status(wdev, &status, gfp,
18584 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18585 }
18586 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18587
cfg80211_mgmt_tx_status_ext(struct wireless_dev * wdev,struct cfg80211_tx_status * status,gfp_t gfp)18588 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18589 struct cfg80211_tx_status *status, gfp_t gfp)
18590 {
18591 nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18592 }
18593 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18594
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,gfp_t gfp)18595 static int __nl80211_rx_control_port(struct net_device *dev,
18596 struct sk_buff *skb,
18597 bool unencrypted, gfp_t gfp)
18598 {
18599 struct wireless_dev *wdev = dev->ieee80211_ptr;
18600 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18601 struct ethhdr *ehdr = eth_hdr(skb);
18602 const u8 *addr = ehdr->h_source;
18603 u16 proto = be16_to_cpu(skb->protocol);
18604 struct sk_buff *msg;
18605 void *hdr;
18606 struct nlattr *frame;
18607
18608 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18609
18610 if (!nlportid)
18611 return -ENOENT;
18612
18613 msg = nlmsg_new(100 + skb->len, gfp);
18614 if (!msg)
18615 return -ENOMEM;
18616
18617 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18618 if (!hdr) {
18619 nlmsg_free(msg);
18620 return -ENOBUFS;
18621 }
18622
18623 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18624 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18625 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18626 NL80211_ATTR_PAD) ||
18627 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18628 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18629 (unencrypted && nla_put_flag(msg,
18630 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18631 goto nla_put_failure;
18632
18633 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18634 if (!frame)
18635 goto nla_put_failure;
18636
18637 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18638 genlmsg_end(msg, hdr);
18639
18640 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18641
18642 nla_put_failure:
18643 nlmsg_free(msg);
18644 return -ENOBUFS;
18645 }
18646
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted)18647 bool cfg80211_rx_control_port(struct net_device *dev,
18648 struct sk_buff *skb, bool unencrypted)
18649 {
18650 int ret;
18651
18652 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18653 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18654 trace_cfg80211_return_bool(ret == 0);
18655 return ret == 0;
18656 }
18657 EXPORT_SYMBOL(cfg80211_rx_control_port);
18658
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)18659 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18660 const char *mac, gfp_t gfp)
18661 {
18662 struct wireless_dev *wdev = dev->ieee80211_ptr;
18663 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18664 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18665 void **cb;
18666
18667 if (!msg)
18668 return NULL;
18669
18670 cb = (void **)msg->cb;
18671
18672 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18673 if (!cb[0]) {
18674 nlmsg_free(msg);
18675 return NULL;
18676 }
18677
18678 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18679 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18680 goto nla_put_failure;
18681
18682 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18683 goto nla_put_failure;
18684
18685 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18686 if (!cb[1])
18687 goto nla_put_failure;
18688
18689 cb[2] = rdev;
18690
18691 return msg;
18692 nla_put_failure:
18693 nlmsg_free(msg);
18694 return NULL;
18695 }
18696
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)18697 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18698 {
18699 void **cb = (void **)msg->cb;
18700 struct cfg80211_registered_device *rdev = cb[2];
18701
18702 nla_nest_end(msg, cb[1]);
18703 genlmsg_end(msg, cb[0]);
18704
18705 memset(msg->cb, 0, sizeof(msg->cb));
18706
18707 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18708 NL80211_MCGRP_MLME, gfp);
18709 }
18710
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)18711 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18712 enum nl80211_cqm_rssi_threshold_event rssi_event,
18713 s32 rssi_level, gfp_t gfp)
18714 {
18715 struct sk_buff *msg;
18716 struct wireless_dev *wdev = dev->ieee80211_ptr;
18717 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18718
18719 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18720
18721 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18722 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18723 return;
18724
18725 if (wdev->cqm_config) {
18726 wdev->cqm_config->last_rssi_event_value = rssi_level;
18727
18728 cfg80211_cqm_rssi_update(rdev, dev);
18729
18730 if (rssi_level == 0)
18731 rssi_level = wdev->cqm_config->last_rssi_event_value;
18732 }
18733
18734 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18735 if (!msg)
18736 return;
18737
18738 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18739 rssi_event))
18740 goto nla_put_failure;
18741
18742 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18743 rssi_level))
18744 goto nla_put_failure;
18745
18746 cfg80211_send_cqm(msg, gfp);
18747
18748 return;
18749
18750 nla_put_failure:
18751 nlmsg_free(msg);
18752 }
18753 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18754
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)18755 void cfg80211_cqm_txe_notify(struct net_device *dev,
18756 const u8 *peer, u32 num_packets,
18757 u32 rate, u32 intvl, gfp_t gfp)
18758 {
18759 struct sk_buff *msg;
18760
18761 msg = cfg80211_prepare_cqm(dev, peer, gfp);
18762 if (!msg)
18763 return;
18764
18765 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18766 goto nla_put_failure;
18767
18768 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18769 goto nla_put_failure;
18770
18771 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18772 goto nla_put_failure;
18773
18774 cfg80211_send_cqm(msg, gfp);
18775 return;
18776
18777 nla_put_failure:
18778 nlmsg_free(msg);
18779 }
18780 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18781
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)18782 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18783 const u8 *peer, u32 num_packets, gfp_t gfp)
18784 {
18785 struct sk_buff *msg;
18786
18787 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18788
18789 msg = cfg80211_prepare_cqm(dev, peer, gfp);
18790 if (!msg)
18791 return;
18792
18793 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18794 goto nla_put_failure;
18795
18796 cfg80211_send_cqm(msg, gfp);
18797 return;
18798
18799 nla_put_failure:
18800 nlmsg_free(msg);
18801 }
18802 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18803
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)18804 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18805 {
18806 struct sk_buff *msg;
18807
18808 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18809 if (!msg)
18810 return;
18811
18812 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18813 goto nla_put_failure;
18814
18815 cfg80211_send_cqm(msg, gfp);
18816 return;
18817
18818 nla_put_failure:
18819 nlmsg_free(msg);
18820 }
18821 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18822
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)18823 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18824 struct net_device *netdev, const u8 *bssid,
18825 const u8 *replay_ctr, gfp_t gfp)
18826 {
18827 struct sk_buff *msg;
18828 struct nlattr *rekey_attr;
18829 void *hdr;
18830
18831 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18832 if (!msg)
18833 return;
18834
18835 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18836 if (!hdr) {
18837 nlmsg_free(msg);
18838 return;
18839 }
18840
18841 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18842 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18843 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18844 goto nla_put_failure;
18845
18846 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18847 if (!rekey_attr)
18848 goto nla_put_failure;
18849
18850 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18851 NL80211_REPLAY_CTR_LEN, replay_ctr))
18852 goto nla_put_failure;
18853
18854 nla_nest_end(msg, rekey_attr);
18855
18856 genlmsg_end(msg, hdr);
18857
18858 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18859 NL80211_MCGRP_MLME, gfp);
18860 return;
18861
18862 nla_put_failure:
18863 nlmsg_free(msg);
18864 }
18865
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)18866 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18867 const u8 *replay_ctr, gfp_t gfp)
18868 {
18869 struct wireless_dev *wdev = dev->ieee80211_ptr;
18870 struct wiphy *wiphy = wdev->wiphy;
18871 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18872
18873 trace_cfg80211_gtk_rekey_notify(dev, bssid);
18874 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18875 }
18876 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
18877
18878 static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,int index,const u8 * bssid,bool preauth,gfp_t gfp)18879 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
18880 struct net_device *netdev, int index,
18881 const u8 *bssid, bool preauth, gfp_t gfp)
18882 {
18883 struct sk_buff *msg;
18884 struct nlattr *attr;
18885 void *hdr;
18886
18887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18888 if (!msg)
18889 return;
18890
18891 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
18892 if (!hdr) {
18893 nlmsg_free(msg);
18894 return;
18895 }
18896
18897 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18898 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18899 goto nla_put_failure;
18900
18901 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
18902 if (!attr)
18903 goto nla_put_failure;
18904
18905 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
18906 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
18907 (preauth &&
18908 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
18909 goto nla_put_failure;
18910
18911 nla_nest_end(msg, attr);
18912
18913 genlmsg_end(msg, hdr);
18914
18915 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18916 NL80211_MCGRP_MLME, gfp);
18917 return;
18918
18919 nla_put_failure:
18920 nlmsg_free(msg);
18921 }
18922
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)18923 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
18924 const u8 *bssid, bool preauth, gfp_t gfp)
18925 {
18926 struct wireless_dev *wdev = dev->ieee80211_ptr;
18927 struct wiphy *wiphy = wdev->wiphy;
18928 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18929
18930 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
18931 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
18932 }
18933 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
18934
nl80211_ch_switch_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,unsigned int link_id,struct cfg80211_chan_def * chandef,gfp_t gfp,enum nl80211_commands notif,u8 count,bool quiet)18935 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
18936 struct net_device *netdev,
18937 unsigned int link_id,
18938 struct cfg80211_chan_def *chandef,
18939 gfp_t gfp,
18940 enum nl80211_commands notif,
18941 u8 count, bool quiet)
18942 {
18943 struct wireless_dev *wdev = netdev->ieee80211_ptr;
18944 struct sk_buff *msg;
18945 void *hdr;
18946
18947 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18948 if (!msg)
18949 return;
18950
18951 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
18952 if (!hdr) {
18953 nlmsg_free(msg);
18954 return;
18955 }
18956
18957 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18958 goto nla_put_failure;
18959
18960 if (wdev->valid_links &&
18961 nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18962 goto nla_put_failure;
18963
18964 if (nl80211_send_chandef(msg, chandef))
18965 goto nla_put_failure;
18966
18967 if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
18968 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
18969 goto nla_put_failure;
18970 if (quiet &&
18971 nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
18972 goto nla_put_failure;
18973 }
18974
18975 genlmsg_end(msg, hdr);
18976
18977 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18978 NL80211_MCGRP_MLME, gfp);
18979 return;
18980
18981 nla_put_failure:
18982 nlmsg_free(msg);
18983 }
18984
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,unsigned int link_id)18985 void cfg80211_ch_switch_notify(struct net_device *dev,
18986 struct cfg80211_chan_def *chandef,
18987 unsigned int link_id)
18988 {
18989 struct wireless_dev *wdev = dev->ieee80211_ptr;
18990 struct wiphy *wiphy = wdev->wiphy;
18991 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18992
18993 ASSERT_WDEV_LOCK(wdev);
18994 WARN_INVALID_LINK_ID(wdev, link_id);
18995
18996 trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
18997
18998 switch (wdev->iftype) {
18999 case NL80211_IFTYPE_STATION:
19000 case NL80211_IFTYPE_P2P_CLIENT:
19001 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19002 cfg80211_update_assoc_bss_entry(wdev, link_id,
19003 chandef->chan);
19004 break;
19005 case NL80211_IFTYPE_MESH_POINT:
19006 wdev->u.mesh.chandef = *chandef;
19007 wdev->u.mesh.preset_chandef = *chandef;
19008 break;
19009 case NL80211_IFTYPE_AP:
19010 case NL80211_IFTYPE_P2P_GO:
19011 wdev->links[link_id].ap.chandef = *chandef;
19012 break;
19013 case NL80211_IFTYPE_ADHOC:
19014 wdev->u.ibss.chandef = *chandef;
19015 break;
19016 default:
19017 WARN_ON(1);
19018 break;
19019 }
19020
19021 cfg80211_sched_dfs_chan_update(rdev);
19022
19023 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19024 NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
19025 }
19026 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19027
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,unsigned int link_id,u8 count,bool quiet)19028 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19029 struct cfg80211_chan_def *chandef,
19030 unsigned int link_id, u8 count,
19031 bool quiet)
19032 {
19033 struct wireless_dev *wdev = dev->ieee80211_ptr;
19034 struct wiphy *wiphy = wdev->wiphy;
19035 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19036
19037 ASSERT_WDEV_LOCK(wdev);
19038 WARN_INVALID_LINK_ID(wdev, link_id);
19039
19040 trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id);
19041
19042 nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19043 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19044 count, quiet);
19045 }
19046 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19047
cfg80211_bss_color_notify(struct net_device * dev,gfp_t gfp,enum nl80211_commands cmd,u8 count,u64 color_bitmap)19048 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
19049 enum nl80211_commands cmd, u8 count,
19050 u64 color_bitmap)
19051 {
19052 struct wireless_dev *wdev = dev->ieee80211_ptr;
19053 struct wiphy *wiphy = wdev->wiphy;
19054 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19055 struct sk_buff *msg;
19056 void *hdr;
19057
19058 ASSERT_WDEV_LOCK(wdev);
19059
19060 trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19061
19062 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19063 if (!msg)
19064 return -ENOMEM;
19065
19066 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19067 if (!hdr)
19068 goto nla_put_failure;
19069
19070 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19071 goto nla_put_failure;
19072
19073 if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19074 nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19075 goto nla_put_failure;
19076
19077 if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19078 nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19079 color_bitmap, NL80211_ATTR_PAD))
19080 goto nla_put_failure;
19081
19082 genlmsg_end(msg, hdr);
19083
19084 return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19085 msg, 0, NL80211_MCGRP_MLME, gfp);
19086
19087 nla_put_failure:
19088 nlmsg_free(msg);
19089 return -EINVAL;
19090 }
19091 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19092
19093 void
nl80211_radar_notify(struct cfg80211_registered_device * rdev,const struct cfg80211_chan_def * chandef,enum nl80211_radar_event event,struct net_device * netdev,gfp_t gfp)19094 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19095 const struct cfg80211_chan_def *chandef,
19096 enum nl80211_radar_event event,
19097 struct net_device *netdev, gfp_t gfp)
19098 {
19099 struct sk_buff *msg;
19100 void *hdr;
19101
19102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19103 if (!msg)
19104 return;
19105
19106 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19107 if (!hdr) {
19108 nlmsg_free(msg);
19109 return;
19110 }
19111
19112 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19113 goto nla_put_failure;
19114
19115 /* NOP and radar events don't need a netdev parameter */
19116 if (netdev) {
19117 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19118
19119 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19120 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19121 NL80211_ATTR_PAD))
19122 goto nla_put_failure;
19123 }
19124
19125 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19126 goto nla_put_failure;
19127
19128 if (nl80211_send_chandef(msg, chandef))
19129 goto nla_put_failure;
19130
19131 genlmsg_end(msg, hdr);
19132
19133 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19134 NL80211_MCGRP_MLME, gfp);
19135 return;
19136
19137 nla_put_failure:
19138 nlmsg_free(msg);
19139 }
19140
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)19141 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19142 struct sta_opmode_info *sta_opmode,
19143 gfp_t gfp)
19144 {
19145 struct sk_buff *msg;
19146 struct wireless_dev *wdev = dev->ieee80211_ptr;
19147 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19148 void *hdr;
19149
19150 if (WARN_ON(!mac))
19151 return;
19152
19153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19154 if (!msg)
19155 return;
19156
19157 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19158 if (!hdr) {
19159 nlmsg_free(msg);
19160 return;
19161 }
19162
19163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19164 goto nla_put_failure;
19165
19166 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19167 goto nla_put_failure;
19168
19169 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19170 goto nla_put_failure;
19171
19172 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19173 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19174 goto nla_put_failure;
19175
19176 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19177 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19178 goto nla_put_failure;
19179
19180 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19181 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19182 goto nla_put_failure;
19183
19184 genlmsg_end(msg, hdr);
19185
19186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19187 NL80211_MCGRP_MLME, gfp);
19188
19189 return;
19190
19191 nla_put_failure:
19192 nlmsg_free(msg);
19193 }
19194 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19195
cfg80211_probe_status(struct net_device * dev,const u8 * addr,u64 cookie,bool acked,s32 ack_signal,bool is_valid_ack_signal,gfp_t gfp)19196 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19197 u64 cookie, bool acked, s32 ack_signal,
19198 bool is_valid_ack_signal, gfp_t gfp)
19199 {
19200 struct wireless_dev *wdev = dev->ieee80211_ptr;
19201 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19202 struct sk_buff *msg;
19203 void *hdr;
19204
19205 trace_cfg80211_probe_status(dev, addr, cookie, acked);
19206
19207 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19208
19209 if (!msg)
19210 return;
19211
19212 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19213 if (!hdr) {
19214 nlmsg_free(msg);
19215 return;
19216 }
19217
19218 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19219 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19220 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19221 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19222 NL80211_ATTR_PAD) ||
19223 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19224 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19225 ack_signal)))
19226 goto nla_put_failure;
19227
19228 genlmsg_end(msg, hdr);
19229
19230 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19231 NL80211_MCGRP_MLME, gfp);
19232 return;
19233
19234 nla_put_failure:
19235 nlmsg_free(msg);
19236 }
19237 EXPORT_SYMBOL(cfg80211_probe_status);
19238
cfg80211_report_obss_beacon_khz(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)19239 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19240 size_t len, int freq, int sig_dbm)
19241 {
19242 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19243 struct sk_buff *msg;
19244 void *hdr;
19245 struct cfg80211_beacon_registration *reg;
19246
19247 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19248
19249 spin_lock_bh(&rdev->beacon_registrations_lock);
19250 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19251 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19252 if (!msg) {
19253 spin_unlock_bh(&rdev->beacon_registrations_lock);
19254 return;
19255 }
19256
19257 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19258 if (!hdr)
19259 goto nla_put_failure;
19260
19261 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19262 (freq &&
19263 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19264 KHZ_TO_MHZ(freq)) ||
19265 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19266 freq % 1000))) ||
19267 (sig_dbm &&
19268 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19269 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19270 goto nla_put_failure;
19271
19272 genlmsg_end(msg, hdr);
19273
19274 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19275 }
19276 spin_unlock_bh(&rdev->beacon_registrations_lock);
19277 return;
19278
19279 nla_put_failure:
19280 spin_unlock_bh(&rdev->beacon_registrations_lock);
19281 nlmsg_free(msg);
19282 }
19283 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19284
19285 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)19286 static int cfg80211_net_detect_results(struct sk_buff *msg,
19287 struct cfg80211_wowlan_wakeup *wakeup)
19288 {
19289 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19290 struct nlattr *nl_results, *nl_match, *nl_freqs;
19291 int i, j;
19292
19293 nl_results = nla_nest_start_noflag(msg,
19294 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19295 if (!nl_results)
19296 return -EMSGSIZE;
19297
19298 for (i = 0; i < nd->n_matches; i++) {
19299 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19300
19301 nl_match = nla_nest_start_noflag(msg, i);
19302 if (!nl_match)
19303 break;
19304
19305 /* The SSID attribute is optional in nl80211, but for
19306 * simplicity reasons it's always present in the
19307 * cfg80211 structure. If a driver can't pass the
19308 * SSID, that needs to be changed. A zero length SSID
19309 * is still a valid SSID (wildcard), so it cannot be
19310 * used for this purpose.
19311 */
19312 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19313 match->ssid.ssid)) {
19314 nla_nest_cancel(msg, nl_match);
19315 goto out;
19316 }
19317
19318 if (match->n_channels) {
19319 nl_freqs = nla_nest_start_noflag(msg,
19320 NL80211_ATTR_SCAN_FREQUENCIES);
19321 if (!nl_freqs) {
19322 nla_nest_cancel(msg, nl_match);
19323 goto out;
19324 }
19325
19326 for (j = 0; j < match->n_channels; j++) {
19327 if (nla_put_u32(msg, j, match->channels[j])) {
19328 nla_nest_cancel(msg, nl_freqs);
19329 nla_nest_cancel(msg, nl_match);
19330 goto out;
19331 }
19332 }
19333
19334 nla_nest_end(msg, nl_freqs);
19335 }
19336
19337 nla_nest_end(msg, nl_match);
19338 }
19339
19340 out:
19341 nla_nest_end(msg, nl_results);
19342 return 0;
19343 }
19344
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)19345 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19346 struct cfg80211_wowlan_wakeup *wakeup,
19347 gfp_t gfp)
19348 {
19349 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19350 struct sk_buff *msg;
19351 void *hdr;
19352 int size = 200;
19353
19354 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19355
19356 if (wakeup)
19357 size += wakeup->packet_present_len;
19358
19359 msg = nlmsg_new(size, gfp);
19360 if (!msg)
19361 return;
19362
19363 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19364 if (!hdr)
19365 goto free_msg;
19366
19367 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19368 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19369 NL80211_ATTR_PAD))
19370 goto free_msg;
19371
19372 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19373 wdev->netdev->ifindex))
19374 goto free_msg;
19375
19376 if (wakeup) {
19377 struct nlattr *reasons;
19378
19379 reasons = nla_nest_start_noflag(msg,
19380 NL80211_ATTR_WOWLAN_TRIGGERS);
19381 if (!reasons)
19382 goto free_msg;
19383
19384 if (wakeup->disconnect &&
19385 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19386 goto free_msg;
19387 if (wakeup->magic_pkt &&
19388 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19389 goto free_msg;
19390 if (wakeup->gtk_rekey_failure &&
19391 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19392 goto free_msg;
19393 if (wakeup->eap_identity_req &&
19394 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19395 goto free_msg;
19396 if (wakeup->four_way_handshake &&
19397 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19398 goto free_msg;
19399 if (wakeup->rfkill_release &&
19400 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19401 goto free_msg;
19402
19403 if (wakeup->pattern_idx >= 0 &&
19404 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19405 wakeup->pattern_idx))
19406 goto free_msg;
19407
19408 if (wakeup->tcp_match &&
19409 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19410 goto free_msg;
19411
19412 if (wakeup->tcp_connlost &&
19413 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19414 goto free_msg;
19415
19416 if (wakeup->tcp_nomoretokens &&
19417 nla_put_flag(msg,
19418 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19419 goto free_msg;
19420
19421 if (wakeup->packet) {
19422 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19423 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19424
19425 if (!wakeup->packet_80211) {
19426 pkt_attr =
19427 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19428 len_attr =
19429 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19430 }
19431
19432 if (wakeup->packet_len &&
19433 nla_put_u32(msg, len_attr, wakeup->packet_len))
19434 goto free_msg;
19435
19436 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19437 wakeup->packet))
19438 goto free_msg;
19439 }
19440
19441 if (wakeup->net_detect &&
19442 cfg80211_net_detect_results(msg, wakeup))
19443 goto free_msg;
19444
19445 nla_nest_end(msg, reasons);
19446 }
19447
19448 genlmsg_end(msg, hdr);
19449
19450 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19451 NL80211_MCGRP_MLME, gfp);
19452 return;
19453
19454 free_msg:
19455 nlmsg_free(msg);
19456 }
19457 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19458 #endif
19459
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)19460 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19461 enum nl80211_tdls_operation oper,
19462 u16 reason_code, gfp_t gfp)
19463 {
19464 struct wireless_dev *wdev = dev->ieee80211_ptr;
19465 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19466 struct sk_buff *msg;
19467 void *hdr;
19468
19469 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19470 reason_code);
19471
19472 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19473 if (!msg)
19474 return;
19475
19476 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19477 if (!hdr) {
19478 nlmsg_free(msg);
19479 return;
19480 }
19481
19482 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19483 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19484 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19485 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19486 (reason_code > 0 &&
19487 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19488 goto nla_put_failure;
19489
19490 genlmsg_end(msg, hdr);
19491
19492 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19493 NL80211_MCGRP_MLME, gfp);
19494 return;
19495
19496 nla_put_failure:
19497 nlmsg_free(msg);
19498 }
19499 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19500
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)19501 static int nl80211_netlink_notify(struct notifier_block * nb,
19502 unsigned long state,
19503 void *_notify)
19504 {
19505 struct netlink_notify *notify = _notify;
19506 struct cfg80211_registered_device *rdev;
19507 struct wireless_dev *wdev;
19508 struct cfg80211_beacon_registration *reg, *tmp;
19509
19510 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19511 return NOTIFY_DONE;
19512
19513 rcu_read_lock();
19514
19515 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19516 struct cfg80211_sched_scan_request *sched_scan_req;
19517
19518 list_for_each_entry_rcu(sched_scan_req,
19519 &rdev->sched_scan_req_list,
19520 list) {
19521 if (sched_scan_req->owner_nlportid == notify->portid) {
19522 sched_scan_req->nl_owner_dead = true;
19523 schedule_work(&rdev->sched_scan_stop_wk);
19524 }
19525 }
19526
19527 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19528 cfg80211_mlme_unregister_socket(wdev, notify->portid);
19529
19530 if (wdev->owner_nlportid == notify->portid) {
19531 wdev->nl_owner_dead = true;
19532 schedule_work(&rdev->destroy_work);
19533 } else if (wdev->conn_owner_nlportid == notify->portid) {
19534 schedule_work(&wdev->disconnect_wk);
19535 }
19536
19537 cfg80211_release_pmsr(wdev, notify->portid);
19538 }
19539
19540 spin_lock_bh(&rdev->beacon_registrations_lock);
19541 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19542 list) {
19543 if (reg->nlportid == notify->portid) {
19544 list_del(®->list);
19545 kfree(reg);
19546 break;
19547 }
19548 }
19549 spin_unlock_bh(&rdev->beacon_registrations_lock);
19550 }
19551
19552 rcu_read_unlock();
19553
19554 /*
19555 * It is possible that the user space process that is controlling the
19556 * indoor setting disappeared, so notify the regulatory core.
19557 */
19558 regulatory_netlink_notify(notify->portid);
19559 return NOTIFY_OK;
19560 }
19561
19562 static struct notifier_block nl80211_netlink_notifier = {
19563 .notifier_call = nl80211_netlink_notify,
19564 };
19565
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)19566 void cfg80211_ft_event(struct net_device *netdev,
19567 struct cfg80211_ft_event_params *ft_event)
19568 {
19569 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19570 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19571 struct sk_buff *msg;
19572 void *hdr;
19573
19574 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19575
19576 if (!ft_event->target_ap)
19577 return;
19578
19579 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19580 GFP_KERNEL);
19581 if (!msg)
19582 return;
19583
19584 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19585 if (!hdr)
19586 goto out;
19587
19588 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19589 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19590 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19591 goto out;
19592
19593 if (ft_event->ies &&
19594 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19595 goto out;
19596 if (ft_event->ric_ies &&
19597 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19598 ft_event->ric_ies))
19599 goto out;
19600
19601 genlmsg_end(msg, hdr);
19602
19603 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19604 NL80211_MCGRP_MLME, GFP_KERNEL);
19605 return;
19606 out:
19607 nlmsg_free(msg);
19608 }
19609 EXPORT_SYMBOL(cfg80211_ft_event);
19610
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)19611 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19612 {
19613 struct cfg80211_registered_device *rdev;
19614 struct sk_buff *msg;
19615 void *hdr;
19616 u32 nlportid;
19617
19618 rdev = wiphy_to_rdev(wdev->wiphy);
19619 if (!rdev->crit_proto_nlportid)
19620 return;
19621
19622 nlportid = rdev->crit_proto_nlportid;
19623 rdev->crit_proto_nlportid = 0;
19624
19625 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19626 if (!msg)
19627 return;
19628
19629 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19630 if (!hdr)
19631 goto nla_put_failure;
19632
19633 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19634 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19635 NL80211_ATTR_PAD))
19636 goto nla_put_failure;
19637
19638 genlmsg_end(msg, hdr);
19639
19640 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19641 return;
19642
19643 nla_put_failure:
19644 nlmsg_free(msg);
19645 }
19646 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19647
nl80211_send_ap_stopped(struct wireless_dev * wdev)19648 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
19649 {
19650 struct wiphy *wiphy = wdev->wiphy;
19651 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19652 struct sk_buff *msg;
19653 void *hdr;
19654
19655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19656 if (!msg)
19657 return;
19658
19659 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19660 if (!hdr)
19661 goto out;
19662
19663 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19664 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19665 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19666 NL80211_ATTR_PAD))
19667 goto out;
19668
19669 genlmsg_end(msg, hdr);
19670
19671 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19672 NL80211_MCGRP_MLME, GFP_KERNEL);
19673 return;
19674 out:
19675 nlmsg_free(msg);
19676 }
19677
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)19678 int cfg80211_external_auth_request(struct net_device *dev,
19679 struct cfg80211_external_auth_params *params,
19680 gfp_t gfp)
19681 {
19682 struct wireless_dev *wdev = dev->ieee80211_ptr;
19683 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19684 struct sk_buff *msg;
19685 void *hdr;
19686
19687 if (!wdev->conn_owner_nlportid)
19688 return -EINVAL;
19689
19690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19691 if (!msg)
19692 return -ENOMEM;
19693
19694 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19695 if (!hdr)
19696 goto nla_put_failure;
19697
19698 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19699 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19700 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19701 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19702 params->action) ||
19703 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19704 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19705 params->ssid.ssid))
19706 goto nla_put_failure;
19707
19708 genlmsg_end(msg, hdr);
19709 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19710 wdev->conn_owner_nlportid);
19711 return 0;
19712
19713 nla_put_failure:
19714 nlmsg_free(msg);
19715 return -ENOBUFS;
19716 }
19717 EXPORT_SYMBOL(cfg80211_external_auth_request);
19718
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)19719 void cfg80211_update_owe_info_event(struct net_device *netdev,
19720 struct cfg80211_update_owe_info *owe_info,
19721 gfp_t gfp)
19722 {
19723 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19724 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19725 struct sk_buff *msg;
19726 void *hdr;
19727
19728 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19729
19730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19731 if (!msg)
19732 return;
19733
19734 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19735 if (!hdr)
19736 goto nla_put_failure;
19737
19738 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19739 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19740 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19741 goto nla_put_failure;
19742
19743 if (!owe_info->ie_len ||
19744 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19745 goto nla_put_failure;
19746
19747 genlmsg_end(msg, hdr);
19748
19749 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19750 NL80211_MCGRP_MLME, gfp);
19751 return;
19752
19753 nla_put_failure:
19754 genlmsg_cancel(msg, hdr);
19755 nlmsg_free(msg);
19756 }
19757 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19758
19759 /* initialisation/exit functions */
19760
nl80211_init(void)19761 int __init nl80211_init(void)
19762 {
19763 int err;
19764
19765 err = genl_register_family(&nl80211_fam);
19766 if (err)
19767 return err;
19768
19769 err = netlink_register_notifier(&nl80211_netlink_notifier);
19770 if (err)
19771 goto err_out;
19772
19773 return 0;
19774 err_out:
19775 genl_unregister_family(&nl80211_fam);
19776 return err;
19777 }
19778
nl80211_exit(void)19779 void nl80211_exit(void)
19780 {
19781 netlink_unregister_notifier(&nl80211_netlink_notifier);
19782 genl_unregister_family(&nl80211_fam);
19783 }
19784
