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) 2018-2019 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 <net/net_namespace.h>
24 #include <net/genetlink.h>
25 #include <net/cfg80211.h>
26 #include <net/sock.h>
27 #include <net/inet_connection_sock.h>
28 #include "core.h"
29 #include "nl80211.h"
30 #include "reg.h"
31 #include "rdev-ops.h"
32
33 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
34 struct genl_info *info,
35 struct cfg80211_crypto_settings *settings,
36 int cipher_limit);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam;
40
41 /* multicast groups */
42 enum nl80211_multicast_groups {
43 NL80211_MCGRP_CONFIG,
44 NL80211_MCGRP_SCAN,
45 NL80211_MCGRP_REGULATORY,
46 NL80211_MCGRP_MLME,
47 NL80211_MCGRP_VENDOR,
48 NL80211_MCGRP_NAN,
49 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
50 };
51
52 static const struct genl_multicast_group nl80211_mcgrps[] = {
53 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
54 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
55 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
56 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
57 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
58 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
59 #ifdef CONFIG_NL80211_TESTMODE
60 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
61 #endif
62 };
63
64 /* returns ERR_PTR values */
65 static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net * netns,struct nlattr ** attrs)66 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
67 {
68 struct cfg80211_registered_device *rdev;
69 struct wireless_dev *result = NULL;
70 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
71 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
72 u64 wdev_id;
73 int wiphy_idx = -1;
74 int ifidx = -1;
75
76 ASSERT_RTNL();
77
78 if (!have_ifidx && !have_wdev_id)
79 return ERR_PTR(-EINVAL);
80
81 if (have_ifidx)
82 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
83 if (have_wdev_id) {
84 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
85 wiphy_idx = wdev_id >> 32;
86 }
87
88 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
89 struct wireless_dev *wdev;
90
91 if (wiphy_net(&rdev->wiphy) != netns)
92 continue;
93
94 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
95 continue;
96
97 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
98 if (have_ifidx && wdev->netdev &&
99 wdev->netdev->ifindex == ifidx) {
100 result = wdev;
101 break;
102 }
103 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
104 result = wdev;
105 break;
106 }
107 }
108
109 if (result)
110 break;
111 }
112
113 if (result)
114 return result;
115 return ERR_PTR(-ENODEV);
116 }
117
118 static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net * netns,struct nlattr ** attrs)119 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
120 {
121 struct cfg80211_registered_device *rdev = NULL, *tmp;
122 struct net_device *netdev;
123
124 ASSERT_RTNL();
125
126 if (!attrs[NL80211_ATTR_WIPHY] &&
127 !attrs[NL80211_ATTR_IFINDEX] &&
128 !attrs[NL80211_ATTR_WDEV])
129 return ERR_PTR(-EINVAL);
130
131 if (attrs[NL80211_ATTR_WIPHY])
132 rdev = cfg80211_rdev_by_wiphy_idx(
133 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
134
135 if (attrs[NL80211_ATTR_WDEV]) {
136 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
137 struct wireless_dev *wdev;
138 bool found = false;
139
140 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
141 if (tmp) {
142 /* make sure wdev exists */
143 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
144 if (wdev->identifier != (u32)wdev_id)
145 continue;
146 found = true;
147 break;
148 }
149
150 if (!found)
151 tmp = NULL;
152
153 if (rdev && tmp != rdev)
154 return ERR_PTR(-EINVAL);
155 rdev = tmp;
156 }
157 }
158
159 if (attrs[NL80211_ATTR_IFINDEX]) {
160 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
161
162 netdev = __dev_get_by_index(netns, ifindex);
163 if (netdev) {
164 if (netdev->ieee80211_ptr)
165 tmp = wiphy_to_rdev(
166 netdev->ieee80211_ptr->wiphy);
167 else
168 tmp = NULL;
169
170 /* not wireless device -- return error */
171 if (!tmp)
172 return ERR_PTR(-EINVAL);
173
174 /* mismatch -- return error */
175 if (rdev && tmp != rdev)
176 return ERR_PTR(-EINVAL);
177
178 rdev = tmp;
179 }
180 }
181
182 if (!rdev)
183 return ERR_PTR(-ENODEV);
184
185 if (netns != wiphy_net(&rdev->wiphy))
186 return ERR_PTR(-ENODEV);
187
188 return rdev;
189 }
190
191 /*
192 * This function returns a pointer to the driver
193 * that the genl_info item that is passed refers to.
194 *
195 * The result of this can be a PTR_ERR and hence must
196 * be checked with IS_ERR() for errors.
197 */
198 static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net * netns,struct genl_info * info)199 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
200 {
201 return __cfg80211_rdev_from_attrs(netns, info->attrs);
202 }
203
validate_beacon_head(const struct nlattr * attr,struct netlink_ext_ack * extack)204 static int validate_beacon_head(const struct nlattr *attr,
205 struct netlink_ext_ack *extack)
206 {
207 const u8 *data = nla_data(attr);
208 unsigned int len = nla_len(attr);
209 const struct element *elem;
210 const struct ieee80211_mgmt *mgmt = (void *)data;
211 unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
212 u.beacon.variable);
213
214 if (len < fixedlen)
215 goto err;
216
217 if (ieee80211_hdrlen(mgmt->frame_control) !=
218 offsetof(struct ieee80211_mgmt, u.beacon))
219 goto err;
220
221 data += fixedlen;
222 len -= fixedlen;
223
224 for_each_element(elem, data, len) {
225 /* nothing */
226 }
227
228 if (for_each_element_completed(elem, data, len))
229 return 0;
230
231 err:
232 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
233 return -EINVAL;
234 }
235
validate_ie_attr(const struct nlattr * attr,struct netlink_ext_ack * extack)236 static int validate_ie_attr(const struct nlattr *attr,
237 struct netlink_ext_ack *extack)
238 {
239 const u8 *data = nla_data(attr);
240 unsigned int len = nla_len(attr);
241 const struct element *elem;
242
243 for_each_element(elem, data, len) {
244 /* nothing */
245 }
246
247 if (for_each_element_completed(elem, data, len))
248 return 0;
249
250 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
251 return -EINVAL;
252 }
253
254 /* policy for the attributes */
255 static const struct nla_policy
256 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
257 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
258 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
259 .len = U8_MAX },
260 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
261 .len = U8_MAX },
262 };
263
264 static const struct nla_policy
265 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
266 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
267 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
268 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
269 NLA_POLICY_MAX(NLA_U8, 15),
270 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
271 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
272 NLA_POLICY_MAX(NLA_U8, 15),
273 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
274 NLA_POLICY_MAX(NLA_U8, 31),
275 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
276 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
277 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
278 };
279
280 static const struct nla_policy
281 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
282 [NL80211_PMSR_TYPE_FTM] =
283 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
284 };
285
286 static const struct nla_policy
287 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
288 [NL80211_PMSR_REQ_ATTR_DATA] =
289 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
290 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
291 };
292
293 static const struct nla_policy
294 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
295 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
296 /*
297 * we could specify this again to be the top-level policy,
298 * but that would open us up to recursion problems ...
299 */
300 [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
301 [NL80211_PMSR_PEER_ATTR_REQ] =
302 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
303 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
304 };
305
306 static const struct nla_policy
307 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
308 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
309 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
310 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
311 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
312 [NL80211_PMSR_ATTR_PEERS] =
313 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
314 };
315
316 static const struct nla_policy
317 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
318 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
319 NLA_POLICY_RANGE(NLA_U8, 1, 20),
320 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
321 NLA_POLICY_RANGE(NLA_U8, 1, 20),
322 };
323
324 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
325 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
326 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
327 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
328 .len = 20-1 },
329 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
330
331 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
332 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
333 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
334 NL80211_EDMG_CHANNELS_MIN,
335 NL80211_EDMG_CHANNELS_MAX),
336 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
337 NL80211_EDMG_BW_CONFIG_MIN,
338 NL80211_EDMG_BW_CONFIG_MAX),
339
340 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
341 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
342 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
343
344 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
345 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
346 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
347 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
348 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
349 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
350
351 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
352 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
353 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
354
355 [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
356 [NL80211_ATTR_PREV_BSSID] = {
357 .type = NLA_EXACT_LEN_WARN,
358 .len = ETH_ALEN
359 },
360
361 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
362 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
363 .len = WLAN_MAX_KEY_LEN },
364 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
365 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
366 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
368 [NL80211_ATTR_KEY_TYPE] =
369 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
370
371 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
372 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
373 [NL80211_ATTR_BEACON_HEAD] =
374 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
375 IEEE80211_MAX_DATA_LEN),
376 [NL80211_ATTR_BEACON_TAIL] =
377 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
378 IEEE80211_MAX_DATA_LEN),
379 [NL80211_ATTR_STA_AID] =
380 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
381 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
382 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
383 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
384 .len = NL80211_MAX_SUPP_RATES },
385 [NL80211_ATTR_STA_PLINK_ACTION] =
386 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
387 [NL80211_ATTR_STA_TX_POWER_SETTING] =
388 NLA_POLICY_RANGE(NLA_U8,
389 NL80211_TX_POWER_AUTOMATIC,
390 NL80211_TX_POWER_FIXED),
391 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
392 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
393 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
394 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
395 .len = IEEE80211_MAX_MESH_ID_LEN },
396 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
397
398 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
399 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
400
401 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
402 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
403 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
404 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
405 .len = NL80211_MAX_SUPP_RATES },
406 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
407
408 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
409 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
410
411 [NL80211_ATTR_HT_CAPABILITY] = {
412 .type = NLA_EXACT_LEN_WARN,
413 .len = NL80211_HT_CAPABILITY_LEN
414 },
415
416 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
417 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
418 validate_ie_attr,
419 IEEE80211_MAX_DATA_LEN),
420 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
421 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
422
423 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
424 .len = IEEE80211_MAX_SSID_LEN },
425 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
426 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
427 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
428 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
429 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
430 NL80211_MFP_NO,
431 NL80211_MFP_OPTIONAL),
432 [NL80211_ATTR_STA_FLAGS2] = {
433 .len = sizeof(struct nl80211_sta_flag_update),
434 },
435 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
436 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
437 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
438 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
439 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
440 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
441 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
442 [NL80211_ATTR_PID] = { .type = NLA_U32 },
443 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
444 [NL80211_ATTR_PMKID] = {
445 .type = NLA_EXACT_LEN_WARN,
446 .len = WLAN_PMKID_LEN
447 },
448 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
449 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
450 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
451 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
452 .len = IEEE80211_MAX_DATA_LEN },
453 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
454 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
455 NL80211_PS_DISABLED,
456 NL80211_PS_ENABLED),
457 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
458 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
459 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
460 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
461 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
462 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
463 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
464 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
465 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
466 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
467 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
468 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
469 [NL80211_ATTR_STA_PLINK_STATE] =
470 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
471 [NL80211_ATTR_MESH_PEER_AID] =
472 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
473 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
474 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
475 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
476 [NL80211_ATTR_HIDDEN_SSID] =
477 NLA_POLICY_RANGE(NLA_U32,
478 NL80211_HIDDEN_SSID_NOT_IN_USE,
479 NL80211_HIDDEN_SSID_ZERO_CONTENTS),
480 [NL80211_ATTR_IE_PROBE_RESP] =
481 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
482 IEEE80211_MAX_DATA_LEN),
483 [NL80211_ATTR_IE_ASSOC_RESP] =
484 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
485 IEEE80211_MAX_DATA_LEN),
486 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
487 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
488 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
489 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
490 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
491 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
492 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
493 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
494 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
495 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
496 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
497 .len = IEEE80211_MAX_DATA_LEN },
498 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
499 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
500 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
501 .len = NL80211_HT_CAPABILITY_LEN
502 },
503 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
504 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
505 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
506 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
507 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
508 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
509 [NL80211_ATTR_VHT_CAPABILITY] = {
510 .type = NLA_EXACT_LEN_WARN,
511 .len = NL80211_VHT_CAPABILITY_LEN
512 },
513 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
514 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
515 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
516 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
517 NLA_POLICY_RANGE(NLA_U32,
518 NL80211_MESH_POWER_UNKNOWN + 1,
519 NL80211_MESH_POWER_MAX),
520 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
521 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
522 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
523 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
524 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
525 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
526 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
527 .len = NL80211_VHT_CAPABILITY_LEN,
528 },
529 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
530 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
531 .len = IEEE80211_MAX_DATA_LEN },
532 [NL80211_ATTR_PEER_AID] =
533 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
534 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
535 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
536 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
537 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
538 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
539 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
540 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
541 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
542 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
543 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
544 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
545 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
546 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
547 .len = IEEE80211_QOS_MAP_LEN_MAX },
548 [NL80211_ATTR_MAC_HINT] = {
549 .type = NLA_EXACT_LEN_WARN,
550 .len = ETH_ALEN
551 },
552 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
553 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
554 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
555 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
556 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
557 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
558 [NL80211_ATTR_USER_PRIO] =
559 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
560 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
561 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
562 [NL80211_ATTR_MAC_MASK] = {
563 .type = NLA_EXACT_LEN_WARN,
564 .len = ETH_ALEN
565 },
566 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
567 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
568 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
569 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
570 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
571 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
572 [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
573 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
574 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
575 .len = VHT_MUMIMO_GROUPS_DATA_LEN
576 },
577 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
578 .type = NLA_EXACT_LEN_WARN,
579 .len = ETH_ALEN
580 },
581 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
582 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
583 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
584 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
585 .len = FILS_MAX_KEK_LEN },
586 [NL80211_ATTR_FILS_NONCES] = {
587 .type = NLA_EXACT_LEN_WARN,
588 .len = 2 * FILS_NONCE_LEN
589 },
590 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
591 [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
592 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
593 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
594 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
595 },
596 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
597 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
598 .len = FILS_ERP_MAX_USERNAME_LEN },
599 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
600 .len = FILS_ERP_MAX_REALM_LEN },
601 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
602 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
603 .len = FILS_ERP_MAX_RRK_LEN },
604 [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
605 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
606 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
607 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
608
609 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
610 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
611 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
612 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
613 .len = NL80211_HE_MAX_CAPABILITY_LEN },
614
615 [NL80211_ATTR_FTM_RESPONDER] = {
616 .type = NLA_NESTED,
617 .validation_data = nl80211_ftm_responder_policy,
618 },
619 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
620 [NL80211_ATTR_PEER_MEASUREMENTS] =
621 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
622 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
623 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
624 .len = SAE_PASSWORD_MAX_LEN },
625 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
626 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
627 };
628
629 /* policy for the key attributes */
630 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
631 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
632 [NL80211_KEY_IDX] = { .type = NLA_U8 },
633 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
634 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
635 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
636 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
637 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
638 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
639 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
640 };
641
642 /* policy for the key default flags */
643 static const struct nla_policy
644 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
645 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
646 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
647 };
648
649 #ifdef CONFIG_PM
650 /* policy for WoWLAN attributes */
651 static const struct nla_policy
652 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
653 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
654 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
655 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
656 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
657 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
658 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
659 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
660 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
661 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
662 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
663 };
664
665 static const struct nla_policy
666 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
667 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
668 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
669 [NL80211_WOWLAN_TCP_DST_MAC] = {
670 .type = NLA_EXACT_LEN_WARN,
671 .len = ETH_ALEN
672 },
673 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
674 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
675 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
676 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
677 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
678 },
679 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
680 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
681 },
682 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
683 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
684 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
685 };
686 #endif /* CONFIG_PM */
687
688 /* policy for coalesce rule attributes */
689 static const struct nla_policy
690 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
691 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
692 [NL80211_ATTR_COALESCE_RULE_CONDITION] =
693 NLA_POLICY_RANGE(NLA_U32,
694 NL80211_COALESCE_CONDITION_MATCH,
695 NL80211_COALESCE_CONDITION_NO_MATCH),
696 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
697 };
698
699 /* policy for GTK rekey offload attributes */
700 static const struct nla_policy
701 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
702 [NL80211_REKEY_DATA_KEK] = {
703 .type = NLA_EXACT_LEN_WARN,
704 .len = NL80211_KEK_LEN,
705 },
706 [NL80211_REKEY_DATA_KCK] = {
707 .type = NLA_EXACT_LEN_WARN,
708 .len = NL80211_KCK_LEN,
709 },
710 [NL80211_REKEY_DATA_REPLAY_CTR] = {
711 .type = NLA_EXACT_LEN_WARN,
712 .len = NL80211_REPLAY_CTR_LEN
713 },
714 };
715
716 static const struct nla_policy
717 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
718 [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
719 [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
720 [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
721 [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
722 };
723
724 static const struct nla_policy
725 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
726 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
727 .len = IEEE80211_MAX_SSID_LEN },
728 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
729 .type = NLA_EXACT_LEN_WARN,
730 .len = ETH_ALEN
731 },
732 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
733 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
734 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
735 };
736
737 static const struct nla_policy
738 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
739 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
740 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
741 };
742
743 static const struct nla_policy
744 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
745 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
746 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
747 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
748 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
749 },
750 };
751
752 /* policy for NAN function attributes */
753 static const struct nla_policy
754 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
755 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
756 [NL80211_NAN_FUNC_SERVICE_ID] = {
757 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
758 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
759 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
760 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
761 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
762 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
763 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
764 .type = NLA_EXACT_LEN_WARN,
765 .len = ETH_ALEN
766 },
767 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
768 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
769 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
770 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
771 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
772 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
773 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
774 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
775 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
776 };
777
778 /* policy for Service Response Filter attributes */
779 static const struct nla_policy
780 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
781 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
782 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
783 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
784 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
785 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
786 };
787
788 /* policy for packet pattern attributes */
789 static const struct nla_policy
790 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
791 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
792 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
793 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
794 };
795
nl80211_prepare_wdev_dump(struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)796 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
797 struct cfg80211_registered_device **rdev,
798 struct wireless_dev **wdev)
799 {
800 int err;
801
802 if (!cb->args[0]) {
803 struct nlattr **attrbuf;
804
805 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
806 GFP_KERNEL);
807 if (!attrbuf)
808 return -ENOMEM;
809
810 err = nlmsg_parse_deprecated(cb->nlh,
811 GENL_HDRLEN + nl80211_fam.hdrsize,
812 attrbuf, nl80211_fam.maxattr,
813 nl80211_policy, NULL);
814 if (err) {
815 kfree(attrbuf);
816 return err;
817 }
818
819 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
820 attrbuf);
821 kfree(attrbuf);
822 if (IS_ERR(*wdev))
823 return PTR_ERR(*wdev);
824 *rdev = wiphy_to_rdev((*wdev)->wiphy);
825 /* 0 is the first index - add 1 to parse only once */
826 cb->args[0] = (*rdev)->wiphy_idx + 1;
827 cb->args[1] = (*wdev)->identifier;
828 } else {
829 /* subtract the 1 again here */
830 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
831 struct wireless_dev *tmp;
832
833 if (!wiphy)
834 return -ENODEV;
835 *rdev = wiphy_to_rdev(wiphy);
836 *wdev = NULL;
837
838 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
839 if (tmp->identifier == cb->args[1]) {
840 *wdev = tmp;
841 break;
842 }
843 }
844
845 if (!*wdev)
846 return -ENODEV;
847 }
848
849 return 0;
850 }
851
852 /* message building helper */
nl80211hdr_put(struct sk_buff * skb,u32 portid,u32 seq,int flags,u8 cmd)853 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
854 int flags, u8 cmd)
855 {
856 /* since there is no private header just add the generic one */
857 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
858 }
859
nl80211_msg_put_wmm_rules(struct sk_buff * msg,const struct ieee80211_reg_rule * rule)860 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
861 const struct ieee80211_reg_rule *rule)
862 {
863 int j;
864 struct nlattr *nl_wmm_rules =
865 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
866
867 if (!nl_wmm_rules)
868 goto nla_put_failure;
869
870 for (j = 0; j < IEEE80211_NUM_ACS; j++) {
871 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
872
873 if (!nl_wmm_rule)
874 goto nla_put_failure;
875
876 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
877 rule->wmm_rule.client[j].cw_min) ||
878 nla_put_u16(msg, NL80211_WMMR_CW_MAX,
879 rule->wmm_rule.client[j].cw_max) ||
880 nla_put_u8(msg, NL80211_WMMR_AIFSN,
881 rule->wmm_rule.client[j].aifsn) ||
882 nla_put_u16(msg, NL80211_WMMR_TXOP,
883 rule->wmm_rule.client[j].cot))
884 goto nla_put_failure;
885
886 nla_nest_end(msg, nl_wmm_rule);
887 }
888 nla_nest_end(msg, nl_wmm_rules);
889
890 return 0;
891
892 nla_put_failure:
893 return -ENOBUFS;
894 }
895
nl80211_msg_put_channel(struct sk_buff * msg,struct wiphy * wiphy,struct ieee80211_channel * chan,bool large)896 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
897 struct ieee80211_channel *chan,
898 bool large)
899 {
900 /* Some channels must be completely excluded from the
901 * list to protect old user-space tools from breaking
902 */
903 if (!large && chan->flags &
904 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
905 return 0;
906
907 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
908 chan->center_freq))
909 goto nla_put_failure;
910
911 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
912 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
913 goto nla_put_failure;
914 if (chan->flags & IEEE80211_CHAN_NO_IR) {
915 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
916 goto nla_put_failure;
917 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
918 goto nla_put_failure;
919 }
920 if (chan->flags & IEEE80211_CHAN_RADAR) {
921 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
922 goto nla_put_failure;
923 if (large) {
924 u32 time;
925
926 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
927
928 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
929 chan->dfs_state))
930 goto nla_put_failure;
931 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
932 time))
933 goto nla_put_failure;
934 if (nla_put_u32(msg,
935 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
936 chan->dfs_cac_ms))
937 goto nla_put_failure;
938 }
939 }
940
941 if (large) {
942 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
943 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
944 goto nla_put_failure;
945 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
946 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
947 goto nla_put_failure;
948 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
949 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
950 goto nla_put_failure;
951 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
952 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
953 goto nla_put_failure;
954 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
955 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
956 goto nla_put_failure;
957 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
958 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
959 goto nla_put_failure;
960 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
961 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
962 goto nla_put_failure;
963 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
964 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
965 goto nla_put_failure;
966 }
967
968 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
969 DBM_TO_MBM(chan->max_power)))
970 goto nla_put_failure;
971
972 if (large) {
973 const struct ieee80211_reg_rule *rule =
974 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
975
976 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
977 if (nl80211_msg_put_wmm_rules(msg, rule))
978 goto nla_put_failure;
979 }
980 }
981
982 return 0;
983
984 nla_put_failure:
985 return -ENOBUFS;
986 }
987
nl80211_put_txq_stats(struct sk_buff * msg,struct cfg80211_txq_stats * txqstats,int attrtype)988 static bool nl80211_put_txq_stats(struct sk_buff *msg,
989 struct cfg80211_txq_stats *txqstats,
990 int attrtype)
991 {
992 struct nlattr *txqattr;
993
994 #define PUT_TXQVAL_U32(attr, memb) do { \
995 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \
996 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
997 return false; \
998 } while (0)
999
1000 txqattr = nla_nest_start_noflag(msg, attrtype);
1001 if (!txqattr)
1002 return false;
1003
1004 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1005 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1006 PUT_TXQVAL_U32(FLOWS, flows);
1007 PUT_TXQVAL_U32(DROPS, drops);
1008 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1009 PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1010 PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1011 PUT_TXQVAL_U32(COLLISIONS, collisions);
1012 PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1013 PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1014 PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1015 nla_nest_end(msg, txqattr);
1016
1017 #undef PUT_TXQVAL_U32
1018 return true;
1019 }
1020
1021 /* netlink command implementations */
1022
1023 struct key_parse {
1024 struct key_params p;
1025 int idx;
1026 int type;
1027 bool def, defmgmt;
1028 bool def_uni, def_multi;
1029 };
1030
nl80211_parse_key_new(struct genl_info * info,struct nlattr * key,struct key_parse * k)1031 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1032 struct key_parse *k)
1033 {
1034 struct nlattr *tb[NL80211_KEY_MAX + 1];
1035 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1036 nl80211_key_policy,
1037 info->extack);
1038 if (err)
1039 return err;
1040
1041 k->def = !!tb[NL80211_KEY_DEFAULT];
1042 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1043
1044 if (k->def) {
1045 k->def_uni = true;
1046 k->def_multi = true;
1047 }
1048 if (k->defmgmt)
1049 k->def_multi = true;
1050
1051 if (tb[NL80211_KEY_IDX])
1052 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1053
1054 if (tb[NL80211_KEY_DATA]) {
1055 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1056 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1057 }
1058
1059 if (tb[NL80211_KEY_SEQ]) {
1060 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1061 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1062 }
1063
1064 if (tb[NL80211_KEY_CIPHER])
1065 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1066
1067 if (tb[NL80211_KEY_TYPE])
1068 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1069
1070 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1071 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1072
1073 err = nla_parse_nested_deprecated(kdt,
1074 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1075 tb[NL80211_KEY_DEFAULT_TYPES],
1076 nl80211_key_default_policy,
1077 info->extack);
1078 if (err)
1079 return err;
1080
1081 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1082 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1083 }
1084
1085 if (tb[NL80211_KEY_MODE])
1086 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1087
1088 return 0;
1089 }
1090
nl80211_parse_key_old(struct genl_info * info,struct key_parse * k)1091 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1092 {
1093 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1094 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1095 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1096 }
1097
1098 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1099 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1100 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1101 }
1102
1103 if (info->attrs[NL80211_ATTR_KEY_IDX])
1104 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1105
1106 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1107 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1108
1109 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1110 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1111
1112 if (k->def) {
1113 k->def_uni = true;
1114 k->def_multi = true;
1115 }
1116 if (k->defmgmt)
1117 k->def_multi = true;
1118
1119 if (info->attrs[NL80211_ATTR_KEY_TYPE])
1120 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1121
1122 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1123 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1124 int err = nla_parse_nested_deprecated(kdt,
1125 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1126 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1127 nl80211_key_default_policy,
1128 info->extack);
1129 if (err)
1130 return err;
1131
1132 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1133 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1134 }
1135
1136 return 0;
1137 }
1138
nl80211_parse_key(struct genl_info * info,struct key_parse * k)1139 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1140 {
1141 int err;
1142
1143 memset(k, 0, sizeof(*k));
1144 k->idx = -1;
1145 k->type = -1;
1146
1147 if (info->attrs[NL80211_ATTR_KEY])
1148 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1149 else
1150 err = nl80211_parse_key_old(info, k);
1151
1152 if (err)
1153 return err;
1154
1155 if (k->def && k->defmgmt) {
1156 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1157 return -EINVAL;
1158 }
1159
1160 if (k->defmgmt) {
1161 if (k->def_uni || !k->def_multi) {
1162 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1163 return -EINVAL;
1164 }
1165 }
1166
1167 if (k->idx != -1) {
1168 if (k->defmgmt) {
1169 if (k->idx < 4 || k->idx > 5) {
1170 GENL_SET_ERR_MSG(info,
1171 "defmgmt key idx not 4 or 5");
1172 return -EINVAL;
1173 }
1174 } else if (k->def) {
1175 if (k->idx < 0 || k->idx > 3) {
1176 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1177 return -EINVAL;
1178 }
1179 } else {
1180 if (k->idx < 0 || k->idx > 5) {
1181 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1182 return -EINVAL;
1183 }
1184 }
1185 }
1186
1187 return 0;
1188 }
1189
1190 static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device * rdev,struct genl_info * info,bool * no_ht)1191 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1192 struct genl_info *info, bool *no_ht)
1193 {
1194 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1195 struct key_parse parse;
1196 struct nlattr *key;
1197 struct cfg80211_cached_keys *result;
1198 int rem, err, def = 0;
1199 bool have_key = false;
1200
1201 nla_for_each_nested(key, keys, rem) {
1202 have_key = true;
1203 break;
1204 }
1205
1206 if (!have_key)
1207 return NULL;
1208
1209 result = kzalloc(sizeof(*result), GFP_KERNEL);
1210 if (!result)
1211 return ERR_PTR(-ENOMEM);
1212
1213 result->def = -1;
1214
1215 nla_for_each_nested(key, keys, rem) {
1216 memset(&parse, 0, sizeof(parse));
1217 parse.idx = -1;
1218
1219 err = nl80211_parse_key_new(info, key, &parse);
1220 if (err)
1221 goto error;
1222 err = -EINVAL;
1223 if (!parse.p.key)
1224 goto error;
1225 if (parse.idx < 0 || parse.idx > 3) {
1226 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1227 goto error;
1228 }
1229 if (parse.def) {
1230 if (def) {
1231 GENL_SET_ERR_MSG(info,
1232 "only one key can be default");
1233 goto error;
1234 }
1235 def = 1;
1236 result->def = parse.idx;
1237 if (!parse.def_uni || !parse.def_multi)
1238 goto error;
1239 } else if (parse.defmgmt)
1240 goto error;
1241 err = cfg80211_validate_key_settings(rdev, &parse.p,
1242 parse.idx, false, NULL);
1243 if (err)
1244 goto error;
1245 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1246 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1247 GENL_SET_ERR_MSG(info, "connect key must be WEP");
1248 err = -EINVAL;
1249 goto error;
1250 }
1251 result->params[parse.idx].cipher = parse.p.cipher;
1252 result->params[parse.idx].key_len = parse.p.key_len;
1253 result->params[parse.idx].key = result->data[parse.idx];
1254 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1255
1256 /* must be WEP key if we got here */
1257 if (no_ht)
1258 *no_ht = true;
1259 }
1260
1261 if (result->def < 0) {
1262 err = -EINVAL;
1263 GENL_SET_ERR_MSG(info, "need a default/TX key");
1264 goto error;
1265 }
1266
1267 return result;
1268 error:
1269 kfree(result);
1270 return ERR_PTR(err);
1271 }
1272
nl80211_key_allowed(struct wireless_dev * wdev)1273 static int nl80211_key_allowed(struct wireless_dev *wdev)
1274 {
1275 ASSERT_WDEV_LOCK(wdev);
1276
1277 switch (wdev->iftype) {
1278 case NL80211_IFTYPE_AP:
1279 case NL80211_IFTYPE_AP_VLAN:
1280 case NL80211_IFTYPE_P2P_GO:
1281 case NL80211_IFTYPE_MESH_POINT:
1282 break;
1283 case NL80211_IFTYPE_ADHOC:
1284 case NL80211_IFTYPE_STATION:
1285 case NL80211_IFTYPE_P2P_CLIENT:
1286 if (!wdev->current_bss)
1287 return -ENOLINK;
1288 break;
1289 case NL80211_IFTYPE_UNSPECIFIED:
1290 case NL80211_IFTYPE_OCB:
1291 case NL80211_IFTYPE_MONITOR:
1292 case NL80211_IFTYPE_NAN:
1293 case NL80211_IFTYPE_P2P_DEVICE:
1294 case NL80211_IFTYPE_WDS:
1295 case NUM_NL80211_IFTYPES:
1296 return -EINVAL;
1297 }
1298
1299 return 0;
1300 }
1301
nl80211_get_valid_chan(struct wiphy * wiphy,struct nlattr * tb)1302 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1303 struct nlattr *tb)
1304 {
1305 struct ieee80211_channel *chan;
1306
1307 if (tb == NULL)
1308 return NULL;
1309 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1310 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1311 return NULL;
1312 return chan;
1313 }
1314
nl80211_put_iftypes(struct sk_buff * msg,u32 attr,u16 ifmodes)1315 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1316 {
1317 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1318 int i;
1319
1320 if (!nl_modes)
1321 goto nla_put_failure;
1322
1323 i = 0;
1324 while (ifmodes) {
1325 if ((ifmodes & 1) && nla_put_flag(msg, i))
1326 goto nla_put_failure;
1327 ifmodes >>= 1;
1328 i++;
1329 }
1330
1331 nla_nest_end(msg, nl_modes);
1332 return 0;
1333
1334 nla_put_failure:
1335 return -ENOBUFS;
1336 }
1337
nl80211_put_iface_combinations(struct wiphy * wiphy,struct sk_buff * msg,bool large)1338 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1339 struct sk_buff *msg,
1340 bool large)
1341 {
1342 struct nlattr *nl_combis;
1343 int i, j;
1344
1345 nl_combis = nla_nest_start_noflag(msg,
1346 NL80211_ATTR_INTERFACE_COMBINATIONS);
1347 if (!nl_combis)
1348 goto nla_put_failure;
1349
1350 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1351 const struct ieee80211_iface_combination *c;
1352 struct nlattr *nl_combi, *nl_limits;
1353
1354 c = &wiphy->iface_combinations[i];
1355
1356 nl_combi = nla_nest_start_noflag(msg, i + 1);
1357 if (!nl_combi)
1358 goto nla_put_failure;
1359
1360 nl_limits = nla_nest_start_noflag(msg,
1361 NL80211_IFACE_COMB_LIMITS);
1362 if (!nl_limits)
1363 goto nla_put_failure;
1364
1365 for (j = 0; j < c->n_limits; j++) {
1366 struct nlattr *nl_limit;
1367
1368 nl_limit = nla_nest_start_noflag(msg, j + 1);
1369 if (!nl_limit)
1370 goto nla_put_failure;
1371 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1372 c->limits[j].max))
1373 goto nla_put_failure;
1374 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1375 c->limits[j].types))
1376 goto nla_put_failure;
1377 nla_nest_end(msg, nl_limit);
1378 }
1379
1380 nla_nest_end(msg, nl_limits);
1381
1382 if (c->beacon_int_infra_match &&
1383 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1384 goto nla_put_failure;
1385 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1386 c->num_different_channels) ||
1387 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1388 c->max_interfaces))
1389 goto nla_put_failure;
1390 if (large &&
1391 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1392 c->radar_detect_widths) ||
1393 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1394 c->radar_detect_regions)))
1395 goto nla_put_failure;
1396 if (c->beacon_int_min_gcd &&
1397 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1398 c->beacon_int_min_gcd))
1399 goto nla_put_failure;
1400
1401 nla_nest_end(msg, nl_combi);
1402 }
1403
1404 nla_nest_end(msg, nl_combis);
1405
1406 return 0;
1407 nla_put_failure:
1408 return -ENOBUFS;
1409 }
1410
1411 #ifdef CONFIG_PM
nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1412 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1413 struct sk_buff *msg)
1414 {
1415 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1416 struct nlattr *nl_tcp;
1417
1418 if (!tcp)
1419 return 0;
1420
1421 nl_tcp = nla_nest_start_noflag(msg,
1422 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1423 if (!nl_tcp)
1424 return -ENOBUFS;
1425
1426 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1427 tcp->data_payload_max))
1428 return -ENOBUFS;
1429
1430 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1431 tcp->data_payload_max))
1432 return -ENOBUFS;
1433
1434 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1435 return -ENOBUFS;
1436
1437 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1438 sizeof(*tcp->tok), tcp->tok))
1439 return -ENOBUFS;
1440
1441 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1442 tcp->data_interval_max))
1443 return -ENOBUFS;
1444
1445 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1446 tcp->wake_payload_max))
1447 return -ENOBUFS;
1448
1449 nla_nest_end(msg, nl_tcp);
1450 return 0;
1451 }
1452
nl80211_send_wowlan(struct sk_buff * msg,struct cfg80211_registered_device * rdev,bool large)1453 static int nl80211_send_wowlan(struct sk_buff *msg,
1454 struct cfg80211_registered_device *rdev,
1455 bool large)
1456 {
1457 struct nlattr *nl_wowlan;
1458
1459 if (!rdev->wiphy.wowlan)
1460 return 0;
1461
1462 nl_wowlan = nla_nest_start_noflag(msg,
1463 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1464 if (!nl_wowlan)
1465 return -ENOBUFS;
1466
1467 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1468 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1469 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1470 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1471 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1473 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1474 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1475 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1476 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1477 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1478 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1479 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1480 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1481 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1482 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1483 return -ENOBUFS;
1484
1485 if (rdev->wiphy.wowlan->n_patterns) {
1486 struct nl80211_pattern_support pat = {
1487 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1488 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1489 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1490 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1491 };
1492
1493 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1494 sizeof(pat), &pat))
1495 return -ENOBUFS;
1496 }
1497
1498 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1499 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1500 rdev->wiphy.wowlan->max_nd_match_sets))
1501 return -ENOBUFS;
1502
1503 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1504 return -ENOBUFS;
1505
1506 nla_nest_end(msg, nl_wowlan);
1507
1508 return 0;
1509 }
1510 #endif
1511
nl80211_send_coalesce(struct sk_buff * msg,struct cfg80211_registered_device * rdev)1512 static int nl80211_send_coalesce(struct sk_buff *msg,
1513 struct cfg80211_registered_device *rdev)
1514 {
1515 struct nl80211_coalesce_rule_support rule;
1516
1517 if (!rdev->wiphy.coalesce)
1518 return 0;
1519
1520 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1521 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1522 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1523 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1524 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1525 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1526
1527 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1528 return -ENOBUFS;
1529
1530 return 0;
1531 }
1532
1533 static int
nl80211_send_iftype_data(struct sk_buff * msg,const struct ieee80211_sband_iftype_data * iftdata)1534 nl80211_send_iftype_data(struct sk_buff *msg,
1535 const struct ieee80211_sband_iftype_data *iftdata)
1536 {
1537 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1538
1539 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1540 iftdata->types_mask))
1541 return -ENOBUFS;
1542
1543 if (he_cap->has_he) {
1544 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1545 sizeof(he_cap->he_cap_elem.mac_cap_info),
1546 he_cap->he_cap_elem.mac_cap_info) ||
1547 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1548 sizeof(he_cap->he_cap_elem.phy_cap_info),
1549 he_cap->he_cap_elem.phy_cap_info) ||
1550 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1551 sizeof(he_cap->he_mcs_nss_supp),
1552 &he_cap->he_mcs_nss_supp) ||
1553 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1554 sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1555 return -ENOBUFS;
1556 }
1557
1558 return 0;
1559 }
1560
nl80211_send_band_rateinfo(struct sk_buff * msg,struct ieee80211_supported_band * sband)1561 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1562 struct ieee80211_supported_band *sband)
1563 {
1564 struct nlattr *nl_rates, *nl_rate;
1565 struct ieee80211_rate *rate;
1566 int i;
1567
1568 /* add HT info */
1569 if (sband->ht_cap.ht_supported &&
1570 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1571 sizeof(sband->ht_cap.mcs),
1572 &sband->ht_cap.mcs) ||
1573 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1574 sband->ht_cap.cap) ||
1575 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1576 sband->ht_cap.ampdu_factor) ||
1577 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1578 sband->ht_cap.ampdu_density)))
1579 return -ENOBUFS;
1580
1581 /* add VHT info */
1582 if (sband->vht_cap.vht_supported &&
1583 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1584 sizeof(sband->vht_cap.vht_mcs),
1585 &sband->vht_cap.vht_mcs) ||
1586 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1587 sband->vht_cap.cap)))
1588 return -ENOBUFS;
1589
1590 if (sband->n_iftype_data) {
1591 struct nlattr *nl_iftype_data =
1592 nla_nest_start_noflag(msg,
1593 NL80211_BAND_ATTR_IFTYPE_DATA);
1594 int err;
1595
1596 if (!nl_iftype_data)
1597 return -ENOBUFS;
1598
1599 for (i = 0; i < sband->n_iftype_data; i++) {
1600 struct nlattr *iftdata;
1601
1602 iftdata = nla_nest_start_noflag(msg, i + 1);
1603 if (!iftdata)
1604 return -ENOBUFS;
1605
1606 err = nl80211_send_iftype_data(msg,
1607 &sband->iftype_data[i]);
1608 if (err)
1609 return err;
1610
1611 nla_nest_end(msg, iftdata);
1612 }
1613
1614 nla_nest_end(msg, nl_iftype_data);
1615 }
1616
1617 /* add EDMG info */
1618 if (sband->edmg_cap.channels &&
1619 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1620 sband->edmg_cap.channels) ||
1621 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1622 sband->edmg_cap.bw_config)))
1623
1624 return -ENOBUFS;
1625
1626 /* add bitrates */
1627 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1628 if (!nl_rates)
1629 return -ENOBUFS;
1630
1631 for (i = 0; i < sband->n_bitrates; i++) {
1632 nl_rate = nla_nest_start_noflag(msg, i);
1633 if (!nl_rate)
1634 return -ENOBUFS;
1635
1636 rate = &sband->bitrates[i];
1637 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1638 rate->bitrate))
1639 return -ENOBUFS;
1640 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1641 nla_put_flag(msg,
1642 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1643 return -ENOBUFS;
1644
1645 nla_nest_end(msg, nl_rate);
1646 }
1647
1648 nla_nest_end(msg, nl_rates);
1649
1650 return 0;
1651 }
1652
1653 static int
nl80211_send_mgmt_stypes(struct sk_buff * msg,const struct ieee80211_txrx_stypes * mgmt_stypes)1654 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1655 const struct ieee80211_txrx_stypes *mgmt_stypes)
1656 {
1657 u16 stypes;
1658 struct nlattr *nl_ftypes, *nl_ifs;
1659 enum nl80211_iftype ift;
1660 int i;
1661
1662 if (!mgmt_stypes)
1663 return 0;
1664
1665 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1666 if (!nl_ifs)
1667 return -ENOBUFS;
1668
1669 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1670 nl_ftypes = nla_nest_start_noflag(msg, ift);
1671 if (!nl_ftypes)
1672 return -ENOBUFS;
1673 i = 0;
1674 stypes = mgmt_stypes[ift].tx;
1675 while (stypes) {
1676 if ((stypes & 1) &&
1677 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1678 (i << 4) | IEEE80211_FTYPE_MGMT))
1679 return -ENOBUFS;
1680 stypes >>= 1;
1681 i++;
1682 }
1683 nla_nest_end(msg, nl_ftypes);
1684 }
1685
1686 nla_nest_end(msg, nl_ifs);
1687
1688 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1689 if (!nl_ifs)
1690 return -ENOBUFS;
1691
1692 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1693 nl_ftypes = nla_nest_start_noflag(msg, ift);
1694 if (!nl_ftypes)
1695 return -ENOBUFS;
1696 i = 0;
1697 stypes = mgmt_stypes[ift].rx;
1698 while (stypes) {
1699 if ((stypes & 1) &&
1700 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1701 (i << 4) | IEEE80211_FTYPE_MGMT))
1702 return -ENOBUFS;
1703 stypes >>= 1;
1704 i++;
1705 }
1706 nla_nest_end(msg, nl_ftypes);
1707 }
1708 nla_nest_end(msg, nl_ifs);
1709
1710 return 0;
1711 }
1712
1713 #define CMD(op, n) \
1714 do { \
1715 if (rdev->ops->op) { \
1716 i++; \
1717 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1718 goto nla_put_failure; \
1719 } \
1720 } while (0)
1721
nl80211_add_commands_unsplit(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1722 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1723 struct sk_buff *msg)
1724 {
1725 int i = 0;
1726
1727 /*
1728 * do *NOT* add anything into this function, new things need to be
1729 * advertised only to new versions of userspace that can deal with
1730 * the split (and they can't possibly care about new features...
1731 */
1732 CMD(add_virtual_intf, NEW_INTERFACE);
1733 CMD(change_virtual_intf, SET_INTERFACE);
1734 CMD(add_key, NEW_KEY);
1735 CMD(start_ap, START_AP);
1736 CMD(add_station, NEW_STATION);
1737 CMD(add_mpath, NEW_MPATH);
1738 CMD(update_mesh_config, SET_MESH_CONFIG);
1739 CMD(change_bss, SET_BSS);
1740 CMD(auth, AUTHENTICATE);
1741 CMD(assoc, ASSOCIATE);
1742 CMD(deauth, DEAUTHENTICATE);
1743 CMD(disassoc, DISASSOCIATE);
1744 CMD(join_ibss, JOIN_IBSS);
1745 CMD(join_mesh, JOIN_MESH);
1746 CMD(set_pmksa, SET_PMKSA);
1747 CMD(del_pmksa, DEL_PMKSA);
1748 CMD(flush_pmksa, FLUSH_PMKSA);
1749 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1750 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1751 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1752 CMD(mgmt_tx, FRAME);
1753 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1754 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1755 i++;
1756 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1757 goto nla_put_failure;
1758 }
1759 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1760 rdev->ops->join_mesh) {
1761 i++;
1762 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1763 goto nla_put_failure;
1764 }
1765 CMD(set_wds_peer, SET_WDS_PEER);
1766 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1767 CMD(tdls_mgmt, TDLS_MGMT);
1768 CMD(tdls_oper, TDLS_OPER);
1769 }
1770 if (rdev->wiphy.max_sched_scan_reqs)
1771 CMD(sched_scan_start, START_SCHED_SCAN);
1772 CMD(probe_client, PROBE_CLIENT);
1773 CMD(set_noack_map, SET_NOACK_MAP);
1774 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1775 i++;
1776 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1777 goto nla_put_failure;
1778 }
1779 CMD(start_p2p_device, START_P2P_DEVICE);
1780 CMD(set_mcast_rate, SET_MCAST_RATE);
1781 #ifdef CONFIG_NL80211_TESTMODE
1782 CMD(testmode_cmd, TESTMODE);
1783 #endif
1784
1785 if (rdev->ops->connect || rdev->ops->auth) {
1786 i++;
1787 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1788 goto nla_put_failure;
1789 }
1790
1791 if (rdev->ops->disconnect || rdev->ops->deauth) {
1792 i++;
1793 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1794 goto nla_put_failure;
1795 }
1796
1797 return i;
1798 nla_put_failure:
1799 return -ENOBUFS;
1800 }
1801
1802 static int
nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities * cap,struct sk_buff * msg)1803 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1804 struct sk_buff *msg)
1805 {
1806 struct nlattr *ftm;
1807
1808 if (!cap->ftm.supported)
1809 return 0;
1810
1811 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1812 if (!ftm)
1813 return -ENOBUFS;
1814
1815 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1816 return -ENOBUFS;
1817 if (cap->ftm.non_asap &&
1818 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1819 return -ENOBUFS;
1820 if (cap->ftm.request_lci &&
1821 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1822 return -ENOBUFS;
1823 if (cap->ftm.request_civicloc &&
1824 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1825 return -ENOBUFS;
1826 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1827 cap->ftm.preambles))
1828 return -ENOBUFS;
1829 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1830 cap->ftm.bandwidths))
1831 return -ENOBUFS;
1832 if (cap->ftm.max_bursts_exponent >= 0 &&
1833 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1834 cap->ftm.max_bursts_exponent))
1835 return -ENOBUFS;
1836 if (cap->ftm.max_ftms_per_burst &&
1837 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1838 cap->ftm.max_ftms_per_burst))
1839 return -ENOBUFS;
1840
1841 nla_nest_end(msg, ftm);
1842 return 0;
1843 }
1844
nl80211_send_pmsr_capa(struct cfg80211_registered_device * rdev,struct sk_buff * msg)1845 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1846 struct sk_buff *msg)
1847 {
1848 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1849 struct nlattr *pmsr, *caps;
1850
1851 if (!cap)
1852 return 0;
1853
1854 /*
1855 * we don't need to clean up anything here since the caller
1856 * will genlmsg_cancel() if we fail
1857 */
1858
1859 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1860 if (!pmsr)
1861 return -ENOBUFS;
1862
1863 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1864 return -ENOBUFS;
1865
1866 if (cap->report_ap_tsf &&
1867 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1868 return -ENOBUFS;
1869
1870 if (cap->randomize_mac_addr &&
1871 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1872 return -ENOBUFS;
1873
1874 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1875 if (!caps)
1876 return -ENOBUFS;
1877
1878 if (nl80211_send_pmsr_ftm_capa(cap, msg))
1879 return -ENOBUFS;
1880
1881 nla_nest_end(msg, caps);
1882 nla_nest_end(msg, pmsr);
1883
1884 return 0;
1885 }
1886
1887 struct nl80211_dump_wiphy_state {
1888 s64 filter_wiphy;
1889 long start;
1890 long split_start, band_start, chan_start, capa_start;
1891 bool split;
1892 };
1893
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)1894 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1895 enum nl80211_commands cmd,
1896 struct sk_buff *msg, u32 portid, u32 seq,
1897 int flags, struct nl80211_dump_wiphy_state *state)
1898 {
1899 void *hdr;
1900 struct nlattr *nl_bands, *nl_band;
1901 struct nlattr *nl_freqs, *nl_freq;
1902 struct nlattr *nl_cmds;
1903 enum nl80211_band band;
1904 struct ieee80211_channel *chan;
1905 int i;
1906 const struct ieee80211_txrx_stypes *mgmt_stypes =
1907 rdev->wiphy.mgmt_stypes;
1908 u32 features;
1909
1910 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1911 if (!hdr)
1912 return -ENOBUFS;
1913
1914 if (WARN_ON(!state))
1915 return -EINVAL;
1916
1917 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1918 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1919 wiphy_name(&rdev->wiphy)) ||
1920 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1921 cfg80211_rdev_list_generation))
1922 goto nla_put_failure;
1923
1924 if (cmd != NL80211_CMD_NEW_WIPHY)
1925 goto finish;
1926
1927 switch (state->split_start) {
1928 case 0:
1929 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1930 rdev->wiphy.retry_short) ||
1931 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1932 rdev->wiphy.retry_long) ||
1933 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1934 rdev->wiphy.frag_threshold) ||
1935 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1936 rdev->wiphy.rts_threshold) ||
1937 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1938 rdev->wiphy.coverage_class) ||
1939 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1940 rdev->wiphy.max_scan_ssids) ||
1941 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1942 rdev->wiphy.max_sched_scan_ssids) ||
1943 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1944 rdev->wiphy.max_scan_ie_len) ||
1945 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1946 rdev->wiphy.max_sched_scan_ie_len) ||
1947 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1948 rdev->wiphy.max_match_sets) ||
1949 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1950 rdev->wiphy.max_sched_scan_plans) ||
1951 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1952 rdev->wiphy.max_sched_scan_plan_interval) ||
1953 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1954 rdev->wiphy.max_sched_scan_plan_iterations))
1955 goto nla_put_failure;
1956
1957 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1958 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1959 goto nla_put_failure;
1960 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1961 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1962 goto nla_put_failure;
1963 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1964 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1965 goto nla_put_failure;
1966 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1967 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1968 goto nla_put_failure;
1969 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1970 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1971 goto nla_put_failure;
1972 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1973 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1974 goto nla_put_failure;
1975 state->split_start++;
1976 if (state->split)
1977 break;
1978 /* fall through */
1979 case 1:
1980 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1981 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1982 rdev->wiphy.cipher_suites))
1983 goto nla_put_failure;
1984
1985 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1986 rdev->wiphy.max_num_pmkids))
1987 goto nla_put_failure;
1988
1989 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1990 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1991 goto nla_put_failure;
1992
1993 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1994 rdev->wiphy.available_antennas_tx) ||
1995 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1996 rdev->wiphy.available_antennas_rx))
1997 goto nla_put_failure;
1998
1999 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2000 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2001 rdev->wiphy.probe_resp_offload))
2002 goto nla_put_failure;
2003
2004 if ((rdev->wiphy.available_antennas_tx ||
2005 rdev->wiphy.available_antennas_rx) &&
2006 rdev->ops->get_antenna) {
2007 u32 tx_ant = 0, rx_ant = 0;
2008 int res;
2009
2010 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2011 if (!res) {
2012 if (nla_put_u32(msg,
2013 NL80211_ATTR_WIPHY_ANTENNA_TX,
2014 tx_ant) ||
2015 nla_put_u32(msg,
2016 NL80211_ATTR_WIPHY_ANTENNA_RX,
2017 rx_ant))
2018 goto nla_put_failure;
2019 }
2020 }
2021
2022 state->split_start++;
2023 if (state->split)
2024 break;
2025 /* fall through */
2026 case 2:
2027 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2028 rdev->wiphy.interface_modes))
2029 goto nla_put_failure;
2030 state->split_start++;
2031 if (state->split)
2032 break;
2033 /* fall through */
2034 case 3:
2035 nl_bands = nla_nest_start_noflag(msg,
2036 NL80211_ATTR_WIPHY_BANDS);
2037 if (!nl_bands)
2038 goto nla_put_failure;
2039
2040 for (band = state->band_start;
2041 band < NUM_NL80211_BANDS; band++) {
2042 struct ieee80211_supported_band *sband;
2043
2044 sband = rdev->wiphy.bands[band];
2045
2046 if (!sband)
2047 continue;
2048
2049 nl_band = nla_nest_start_noflag(msg, band);
2050 if (!nl_band)
2051 goto nla_put_failure;
2052
2053 switch (state->chan_start) {
2054 case 0:
2055 if (nl80211_send_band_rateinfo(msg, sband))
2056 goto nla_put_failure;
2057 state->chan_start++;
2058 if (state->split)
2059 break;
2060 /* fall through */
2061 default:
2062 /* add frequencies */
2063 nl_freqs = nla_nest_start_noflag(msg,
2064 NL80211_BAND_ATTR_FREQS);
2065 if (!nl_freqs)
2066 goto nla_put_failure;
2067
2068 for (i = state->chan_start - 1;
2069 i < sband->n_channels;
2070 i++) {
2071 nl_freq = nla_nest_start_noflag(msg,
2072 i);
2073 if (!nl_freq)
2074 goto nla_put_failure;
2075
2076 chan = &sband->channels[i];
2077
2078 if (nl80211_msg_put_channel(
2079 msg, &rdev->wiphy, chan,
2080 state->split))
2081 goto nla_put_failure;
2082
2083 nla_nest_end(msg, nl_freq);
2084 if (state->split)
2085 break;
2086 }
2087 if (i < sband->n_channels)
2088 state->chan_start = i + 2;
2089 else
2090 state->chan_start = 0;
2091 nla_nest_end(msg, nl_freqs);
2092 }
2093
2094 nla_nest_end(msg, nl_band);
2095
2096 if (state->split) {
2097 /* start again here */
2098 if (state->chan_start)
2099 band--;
2100 break;
2101 }
2102 }
2103 nla_nest_end(msg, nl_bands);
2104
2105 if (band < NUM_NL80211_BANDS)
2106 state->band_start = band + 1;
2107 else
2108 state->band_start = 0;
2109
2110 /* if bands & channels are done, continue outside */
2111 if (state->band_start == 0 && state->chan_start == 0)
2112 state->split_start++;
2113 if (state->split)
2114 break;
2115 /* fall through */
2116 case 4:
2117 nl_cmds = nla_nest_start_noflag(msg,
2118 NL80211_ATTR_SUPPORTED_COMMANDS);
2119 if (!nl_cmds)
2120 goto nla_put_failure;
2121
2122 i = nl80211_add_commands_unsplit(rdev, msg);
2123 if (i < 0)
2124 goto nla_put_failure;
2125 if (state->split) {
2126 CMD(crit_proto_start, CRIT_PROTOCOL_START);
2127 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2128 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2129 CMD(channel_switch, CHANNEL_SWITCH);
2130 CMD(set_qos_map, SET_QOS_MAP);
2131 if (rdev->wiphy.features &
2132 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2133 CMD(add_tx_ts, ADD_TX_TS);
2134 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2135 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2136 CMD(update_ft_ies, UPDATE_FT_IES);
2137 }
2138 #undef CMD
2139
2140 nla_nest_end(msg, nl_cmds);
2141 state->split_start++;
2142 if (state->split)
2143 break;
2144 /* fall through */
2145 case 5:
2146 if (rdev->ops->remain_on_channel &&
2147 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2148 nla_put_u32(msg,
2149 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2150 rdev->wiphy.max_remain_on_channel_duration))
2151 goto nla_put_failure;
2152
2153 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2154 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2155 goto nla_put_failure;
2156
2157 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2158 goto nla_put_failure;
2159 state->split_start++;
2160 if (state->split)
2161 break;
2162 /* fall through */
2163 case 6:
2164 #ifdef CONFIG_PM
2165 if (nl80211_send_wowlan(msg, rdev, state->split))
2166 goto nla_put_failure;
2167 state->split_start++;
2168 if (state->split)
2169 break;
2170 #else
2171 state->split_start++;
2172 #endif
2173 /* fall through */
2174 case 7:
2175 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2176 rdev->wiphy.software_iftypes))
2177 goto nla_put_failure;
2178
2179 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2180 state->split))
2181 goto nla_put_failure;
2182
2183 state->split_start++;
2184 if (state->split)
2185 break;
2186 /* fall through */
2187 case 8:
2188 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2189 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2190 rdev->wiphy.ap_sme_capa))
2191 goto nla_put_failure;
2192
2193 features = rdev->wiphy.features;
2194 /*
2195 * We can only add the per-channel limit information if the
2196 * dump is split, otherwise it makes it too big. Therefore
2197 * only advertise it in that case.
2198 */
2199 if (state->split)
2200 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2201 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2202 goto nla_put_failure;
2203
2204 if (rdev->wiphy.ht_capa_mod_mask &&
2205 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2206 sizeof(*rdev->wiphy.ht_capa_mod_mask),
2207 rdev->wiphy.ht_capa_mod_mask))
2208 goto nla_put_failure;
2209
2210 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2211 rdev->wiphy.max_acl_mac_addrs &&
2212 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2213 rdev->wiphy.max_acl_mac_addrs))
2214 goto nla_put_failure;
2215
2216 /*
2217 * Any information below this point is only available to
2218 * applications that can deal with it being split. This
2219 * helps ensure that newly added capabilities don't break
2220 * older tools by overrunning their buffers.
2221 *
2222 * We still increment split_start so that in the split
2223 * case we'll continue with more data in the next round,
2224 * but break unconditionally so unsplit data stops here.
2225 */
2226 state->split_start++;
2227 break;
2228 case 9:
2229 if (rdev->wiphy.extended_capabilities &&
2230 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2231 rdev->wiphy.extended_capabilities_len,
2232 rdev->wiphy.extended_capabilities) ||
2233 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2234 rdev->wiphy.extended_capabilities_len,
2235 rdev->wiphy.extended_capabilities_mask)))
2236 goto nla_put_failure;
2237
2238 if (rdev->wiphy.vht_capa_mod_mask &&
2239 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2240 sizeof(*rdev->wiphy.vht_capa_mod_mask),
2241 rdev->wiphy.vht_capa_mod_mask))
2242 goto nla_put_failure;
2243
2244 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2245 rdev->wiphy.perm_addr))
2246 goto nla_put_failure;
2247
2248 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2249 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2250 rdev->wiphy.addr_mask))
2251 goto nla_put_failure;
2252
2253 if (rdev->wiphy.n_addresses > 1) {
2254 void *attr;
2255
2256 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2257 if (!attr)
2258 goto nla_put_failure;
2259
2260 for (i = 0; i < rdev->wiphy.n_addresses; i++)
2261 if (nla_put(msg, i + 1, ETH_ALEN,
2262 rdev->wiphy.addresses[i].addr))
2263 goto nla_put_failure;
2264
2265 nla_nest_end(msg, attr);
2266 }
2267
2268 state->split_start++;
2269 break;
2270 case 10:
2271 if (nl80211_send_coalesce(msg, rdev))
2272 goto nla_put_failure;
2273
2274 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2275 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2276 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2277 goto nla_put_failure;
2278
2279 if (rdev->wiphy.max_ap_assoc_sta &&
2280 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2281 rdev->wiphy.max_ap_assoc_sta))
2282 goto nla_put_failure;
2283
2284 state->split_start++;
2285 break;
2286 case 11:
2287 if (rdev->wiphy.n_vendor_commands) {
2288 const struct nl80211_vendor_cmd_info *info;
2289 struct nlattr *nested;
2290
2291 nested = nla_nest_start_noflag(msg,
2292 NL80211_ATTR_VENDOR_DATA);
2293 if (!nested)
2294 goto nla_put_failure;
2295
2296 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2297 info = &rdev->wiphy.vendor_commands[i].info;
2298 if (nla_put(msg, i + 1, sizeof(*info), info))
2299 goto nla_put_failure;
2300 }
2301 nla_nest_end(msg, nested);
2302 }
2303
2304 if (rdev->wiphy.n_vendor_events) {
2305 const struct nl80211_vendor_cmd_info *info;
2306 struct nlattr *nested;
2307
2308 nested = nla_nest_start_noflag(msg,
2309 NL80211_ATTR_VENDOR_EVENTS);
2310 if (!nested)
2311 goto nla_put_failure;
2312
2313 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2314 info = &rdev->wiphy.vendor_events[i];
2315 if (nla_put(msg, i + 1, sizeof(*info), info))
2316 goto nla_put_failure;
2317 }
2318 nla_nest_end(msg, nested);
2319 }
2320 state->split_start++;
2321 break;
2322 case 12:
2323 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2324 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2325 rdev->wiphy.max_num_csa_counters))
2326 goto nla_put_failure;
2327
2328 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2329 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2330 goto nla_put_failure;
2331
2332 if (rdev->wiphy.max_sched_scan_reqs &&
2333 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2334 rdev->wiphy.max_sched_scan_reqs))
2335 goto nla_put_failure;
2336
2337 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2338 sizeof(rdev->wiphy.ext_features),
2339 rdev->wiphy.ext_features))
2340 goto nla_put_failure;
2341
2342 if (rdev->wiphy.bss_select_support) {
2343 struct nlattr *nested;
2344 u32 bss_select_support = rdev->wiphy.bss_select_support;
2345
2346 nested = nla_nest_start_noflag(msg,
2347 NL80211_ATTR_BSS_SELECT);
2348 if (!nested)
2349 goto nla_put_failure;
2350
2351 i = 0;
2352 while (bss_select_support) {
2353 if ((bss_select_support & 1) &&
2354 nla_put_flag(msg, i))
2355 goto nla_put_failure;
2356 i++;
2357 bss_select_support >>= 1;
2358 }
2359 nla_nest_end(msg, nested);
2360 }
2361
2362 state->split_start++;
2363 break;
2364 case 13:
2365 if (rdev->wiphy.num_iftype_ext_capab &&
2366 rdev->wiphy.iftype_ext_capab) {
2367 struct nlattr *nested_ext_capab, *nested;
2368
2369 nested = nla_nest_start_noflag(msg,
2370 NL80211_ATTR_IFTYPE_EXT_CAPA);
2371 if (!nested)
2372 goto nla_put_failure;
2373
2374 for (i = state->capa_start;
2375 i < rdev->wiphy.num_iftype_ext_capab; i++) {
2376 const struct wiphy_iftype_ext_capab *capab;
2377
2378 capab = &rdev->wiphy.iftype_ext_capab[i];
2379
2380 nested_ext_capab = nla_nest_start_noflag(msg,
2381 i);
2382 if (!nested_ext_capab ||
2383 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2384 capab->iftype) ||
2385 nla_put(msg, NL80211_ATTR_EXT_CAPA,
2386 capab->extended_capabilities_len,
2387 capab->extended_capabilities) ||
2388 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2389 capab->extended_capabilities_len,
2390 capab->extended_capabilities_mask))
2391 goto nla_put_failure;
2392
2393 nla_nest_end(msg, nested_ext_capab);
2394 if (state->split)
2395 break;
2396 }
2397 nla_nest_end(msg, nested);
2398 if (i < rdev->wiphy.num_iftype_ext_capab) {
2399 state->capa_start = i + 1;
2400 break;
2401 }
2402 }
2403
2404 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2405 rdev->wiphy.nan_supported_bands))
2406 goto nla_put_failure;
2407
2408 if (wiphy_ext_feature_isset(&rdev->wiphy,
2409 NL80211_EXT_FEATURE_TXQS)) {
2410 struct cfg80211_txq_stats txqstats = {};
2411 int res;
2412
2413 res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2414 if (!res &&
2415 !nl80211_put_txq_stats(msg, &txqstats,
2416 NL80211_ATTR_TXQ_STATS))
2417 goto nla_put_failure;
2418
2419 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2420 rdev->wiphy.txq_limit))
2421 goto nla_put_failure;
2422 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2423 rdev->wiphy.txq_memory_limit))
2424 goto nla_put_failure;
2425 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2426 rdev->wiphy.txq_quantum))
2427 goto nla_put_failure;
2428 }
2429
2430 state->split_start++;
2431 break;
2432 case 14:
2433 if (nl80211_send_pmsr_capa(rdev, msg))
2434 goto nla_put_failure;
2435
2436 state->split_start++;
2437 break;
2438 case 15:
2439 if (rdev->wiphy.akm_suites &&
2440 nla_put(msg, NL80211_ATTR_AKM_SUITES,
2441 sizeof(u32) * rdev->wiphy.n_akm_suites,
2442 rdev->wiphy.akm_suites))
2443 goto nla_put_failure;
2444
2445 /* done */
2446 state->split_start = 0;
2447 break;
2448 }
2449 finish:
2450 genlmsg_end(msg, hdr);
2451 return 0;
2452
2453 nla_put_failure:
2454 genlmsg_cancel(msg, hdr);
2455 return -EMSGSIZE;
2456 }
2457
nl80211_dump_wiphy_parse(struct sk_buff * skb,struct netlink_callback * cb,struct nl80211_dump_wiphy_state * state)2458 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2459 struct netlink_callback *cb,
2460 struct nl80211_dump_wiphy_state *state)
2461 {
2462 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2463 int ret;
2464
2465 if (!tb)
2466 return -ENOMEM;
2467
2468 ret = nlmsg_parse_deprecated(cb->nlh,
2469 GENL_HDRLEN + nl80211_fam.hdrsize,
2470 tb, nl80211_fam.maxattr,
2471 nl80211_policy, NULL);
2472 /* ignore parse errors for backward compatibility */
2473 if (ret) {
2474 ret = 0;
2475 goto out;
2476 }
2477
2478 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2479 if (tb[NL80211_ATTR_WIPHY])
2480 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2481 if (tb[NL80211_ATTR_WDEV])
2482 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2483 if (tb[NL80211_ATTR_IFINDEX]) {
2484 struct net_device *netdev;
2485 struct cfg80211_registered_device *rdev;
2486 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2487
2488 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2489 if (!netdev) {
2490 ret = -ENODEV;
2491 goto out;
2492 }
2493 if (netdev->ieee80211_ptr) {
2494 rdev = wiphy_to_rdev(
2495 netdev->ieee80211_ptr->wiphy);
2496 state->filter_wiphy = rdev->wiphy_idx;
2497 }
2498 }
2499
2500 ret = 0;
2501 out:
2502 kfree(tb);
2503 return ret;
2504 }
2505
nl80211_dump_wiphy(struct sk_buff * skb,struct netlink_callback * cb)2506 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2507 {
2508 int idx = 0, ret;
2509 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2510 struct cfg80211_registered_device *rdev;
2511
2512 rtnl_lock();
2513 if (!state) {
2514 state = kzalloc(sizeof(*state), GFP_KERNEL);
2515 if (!state) {
2516 rtnl_unlock();
2517 return -ENOMEM;
2518 }
2519 state->filter_wiphy = -1;
2520 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2521 if (ret) {
2522 kfree(state);
2523 rtnl_unlock();
2524 return ret;
2525 }
2526 cb->args[0] = (long)state;
2527 }
2528
2529 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2530 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2531 continue;
2532 if (++idx <= state->start)
2533 continue;
2534 if (state->filter_wiphy != -1 &&
2535 state->filter_wiphy != rdev->wiphy_idx)
2536 continue;
2537 /* attempt to fit multiple wiphy data chunks into the skb */
2538 do {
2539 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2540 skb,
2541 NETLINK_CB(cb->skb).portid,
2542 cb->nlh->nlmsg_seq,
2543 NLM_F_MULTI, state);
2544 if (ret < 0) {
2545 /*
2546 * If sending the wiphy data didn't fit (ENOBUFS
2547 * or EMSGSIZE returned), this SKB is still
2548 * empty (so it's not too big because another
2549 * wiphy dataset is already in the skb) and
2550 * we've not tried to adjust the dump allocation
2551 * yet ... then adjust the alloc size to be
2552 * bigger, and return 1 but with the empty skb.
2553 * This results in an empty message being RX'ed
2554 * in userspace, but that is ignored.
2555 *
2556 * We can then retry with the larger buffer.
2557 */
2558 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2559 !skb->len && !state->split &&
2560 cb->min_dump_alloc < 4096) {
2561 cb->min_dump_alloc = 4096;
2562 state->split_start = 0;
2563 rtnl_unlock();
2564 return 1;
2565 }
2566 idx--;
2567 break;
2568 }
2569 } while (state->split_start > 0);
2570 break;
2571 }
2572 rtnl_unlock();
2573
2574 state->start = idx;
2575
2576 return skb->len;
2577 }
2578
nl80211_dump_wiphy_done(struct netlink_callback * cb)2579 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2580 {
2581 kfree((void *)cb->args[0]);
2582 return 0;
2583 }
2584
nl80211_get_wiphy(struct sk_buff * skb,struct genl_info * info)2585 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2586 {
2587 struct sk_buff *msg;
2588 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2589 struct nl80211_dump_wiphy_state state = {};
2590
2591 msg = nlmsg_new(4096, GFP_KERNEL);
2592 if (!msg)
2593 return -ENOMEM;
2594
2595 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2596 info->snd_portid, info->snd_seq, 0,
2597 &state) < 0) {
2598 nlmsg_free(msg);
2599 return -ENOBUFS;
2600 }
2601
2602 return genlmsg_reply(msg, info);
2603 }
2604
2605 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2606 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2607 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2608 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2609 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2610 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2611 };
2612
parse_txq_params(struct nlattr * tb[],struct ieee80211_txq_params * txq_params)2613 static int parse_txq_params(struct nlattr *tb[],
2614 struct ieee80211_txq_params *txq_params)
2615 {
2616 u8 ac;
2617
2618 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2619 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2620 !tb[NL80211_TXQ_ATTR_AIFS])
2621 return -EINVAL;
2622
2623 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2624 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2625 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2626 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2627 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2628
2629 if (ac >= NL80211_NUM_ACS)
2630 return -EINVAL;
2631 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2632 return 0;
2633 }
2634
nl80211_can_set_dev_channel(struct wireless_dev * wdev)2635 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2636 {
2637 /*
2638 * You can only set the channel explicitly for WDS interfaces,
2639 * all others have their channel managed via their respective
2640 * "establish a connection" command (connect, join, ...)
2641 *
2642 * For AP/GO and mesh mode, the channel can be set with the
2643 * channel userspace API, but is only stored and passed to the
2644 * low-level driver when the AP starts or the mesh is joined.
2645 * This is for backward compatibility, userspace can also give
2646 * the channel in the start-ap or join-mesh commands instead.
2647 *
2648 * Monitors are special as they are normally slaved to
2649 * whatever else is going on, so they have their own special
2650 * operation to set the monitor channel if possible.
2651 */
2652 return !wdev ||
2653 wdev->iftype == NL80211_IFTYPE_AP ||
2654 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2655 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2656 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2657 }
2658
nl80211_parse_chandef(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_chan_def * chandef)2659 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2660 struct genl_info *info,
2661 struct cfg80211_chan_def *chandef)
2662 {
2663 struct netlink_ext_ack *extack = info->extack;
2664 struct nlattr **attrs = info->attrs;
2665 u32 control_freq;
2666
2667 if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2668 return -EINVAL;
2669
2670 control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2671
2672 memset(chandef, 0, sizeof(*chandef));
2673
2674 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2675 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2676 chandef->center_freq1 = control_freq;
2677 chandef->center_freq2 = 0;
2678
2679 /* Primary channel not allowed */
2680 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2681 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2682 "Channel is disabled");
2683 return -EINVAL;
2684 }
2685
2686 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2687 enum nl80211_channel_type chantype;
2688
2689 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2690
2691 switch (chantype) {
2692 case NL80211_CHAN_NO_HT:
2693 case NL80211_CHAN_HT20:
2694 case NL80211_CHAN_HT40PLUS:
2695 case NL80211_CHAN_HT40MINUS:
2696 cfg80211_chandef_create(chandef, chandef->chan,
2697 chantype);
2698 /* user input for center_freq is incorrect */
2699 if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2700 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2701 NL_SET_ERR_MSG_ATTR(extack,
2702 attrs[NL80211_ATTR_CENTER_FREQ1],
2703 "bad center frequency 1");
2704 return -EINVAL;
2705 }
2706 /* center_freq2 must be zero */
2707 if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2708 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2709 NL_SET_ERR_MSG_ATTR(extack,
2710 attrs[NL80211_ATTR_CENTER_FREQ2],
2711 "center frequency 2 can't be used");
2712 return -EINVAL;
2713 }
2714 break;
2715 default:
2716 NL_SET_ERR_MSG_ATTR(extack,
2717 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2718 "invalid channel type");
2719 return -EINVAL;
2720 }
2721 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2722 chandef->width =
2723 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2724 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2725 chandef->center_freq1 =
2726 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2727 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2728 chandef->center_freq2 =
2729 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2730 }
2731
2732 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2733 chandef->edmg.channels =
2734 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2735
2736 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2737 chandef->edmg.bw_config =
2738 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2739 } else {
2740 chandef->edmg.bw_config = 0;
2741 chandef->edmg.channels = 0;
2742 }
2743
2744 if (!cfg80211_chandef_valid(chandef)) {
2745 NL_SET_ERR_MSG(extack, "invalid channel definition");
2746 return -EINVAL;
2747 }
2748
2749 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2750 IEEE80211_CHAN_DISABLED)) {
2751 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2752 return -EINVAL;
2753 }
2754
2755 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2756 chandef->width == NL80211_CHAN_WIDTH_10) &&
2757 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2758 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2759 return -EINVAL;
2760 }
2761
2762 return 0;
2763 }
2764
__nl80211_set_channel(struct cfg80211_registered_device * rdev,struct net_device * dev,struct genl_info * info)2765 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2766 struct net_device *dev,
2767 struct genl_info *info)
2768 {
2769 struct cfg80211_chan_def chandef;
2770 int result;
2771 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2772 struct wireless_dev *wdev = NULL;
2773
2774 if (dev)
2775 wdev = dev->ieee80211_ptr;
2776 if (!nl80211_can_set_dev_channel(wdev))
2777 return -EOPNOTSUPP;
2778 if (wdev)
2779 iftype = wdev->iftype;
2780
2781 result = nl80211_parse_chandef(rdev, info, &chandef);
2782 if (result)
2783 return result;
2784
2785 switch (iftype) {
2786 case NL80211_IFTYPE_AP:
2787 case NL80211_IFTYPE_P2P_GO:
2788 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2789 iftype)) {
2790 result = -EINVAL;
2791 break;
2792 }
2793 if (wdev->beacon_interval) {
2794 if (!dev || !rdev->ops->set_ap_chanwidth ||
2795 !(rdev->wiphy.features &
2796 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2797 result = -EBUSY;
2798 break;
2799 }
2800
2801 /* Only allow dynamic channel width changes */
2802 if (chandef.chan != wdev->preset_chandef.chan) {
2803 result = -EBUSY;
2804 break;
2805 }
2806 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2807 if (result)
2808 break;
2809 }
2810 wdev->preset_chandef = chandef;
2811 result = 0;
2812 break;
2813 case NL80211_IFTYPE_MESH_POINT:
2814 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2815 break;
2816 case NL80211_IFTYPE_MONITOR:
2817 result = cfg80211_set_monitor_channel(rdev, &chandef);
2818 break;
2819 default:
2820 result = -EINVAL;
2821 }
2822
2823 return result;
2824 }
2825
nl80211_set_channel(struct sk_buff * skb,struct genl_info * info)2826 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2827 {
2828 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2829 struct net_device *netdev = info->user_ptr[1];
2830
2831 return __nl80211_set_channel(rdev, netdev, info);
2832 }
2833
nl80211_set_wds_peer(struct sk_buff * skb,struct genl_info * info)2834 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2835 {
2836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2837 struct net_device *dev = info->user_ptr[1];
2838 struct wireless_dev *wdev = dev->ieee80211_ptr;
2839 const u8 *bssid;
2840
2841 if (!info->attrs[NL80211_ATTR_MAC])
2842 return -EINVAL;
2843
2844 if (netif_running(dev))
2845 return -EBUSY;
2846
2847 if (!rdev->ops->set_wds_peer)
2848 return -EOPNOTSUPP;
2849
2850 if (wdev->iftype != NL80211_IFTYPE_WDS)
2851 return -EOPNOTSUPP;
2852
2853 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2854 return rdev_set_wds_peer(rdev, dev, bssid);
2855 }
2856
nl80211_set_wiphy(struct sk_buff * skb,struct genl_info * info)2857 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2858 {
2859 struct cfg80211_registered_device *rdev;
2860 struct net_device *netdev = NULL;
2861 struct wireless_dev *wdev;
2862 int result = 0, rem_txq_params = 0;
2863 struct nlattr *nl_txq_params;
2864 u32 changed;
2865 u8 retry_short = 0, retry_long = 0;
2866 u32 frag_threshold = 0, rts_threshold = 0;
2867 u8 coverage_class = 0;
2868 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2869
2870 ASSERT_RTNL();
2871
2872 /*
2873 * Try to find the wiphy and netdev. Normally this
2874 * function shouldn't need the netdev, but this is
2875 * done for backward compatibility -- previously
2876 * setting the channel was done per wiphy, but now
2877 * it is per netdev. Previous userland like hostapd
2878 * also passed a netdev to set_wiphy, so that it is
2879 * possible to let that go to the right netdev!
2880 */
2881
2882 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2883 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2884
2885 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2886 if (netdev && netdev->ieee80211_ptr)
2887 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2888 else
2889 netdev = NULL;
2890 }
2891
2892 if (!netdev) {
2893 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2894 info->attrs);
2895 if (IS_ERR(rdev))
2896 return PTR_ERR(rdev);
2897 wdev = NULL;
2898 netdev = NULL;
2899 result = 0;
2900 } else
2901 wdev = netdev->ieee80211_ptr;
2902
2903 /*
2904 * end workaround code, by now the rdev is available
2905 * and locked, and wdev may or may not be NULL.
2906 */
2907
2908 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2909 result = cfg80211_dev_rename(
2910 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2911
2912 if (result)
2913 return result;
2914
2915 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2916 struct ieee80211_txq_params txq_params;
2917 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2918
2919 if (!rdev->ops->set_txq_params)
2920 return -EOPNOTSUPP;
2921
2922 if (!netdev)
2923 return -EINVAL;
2924
2925 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2926 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2927 return -EINVAL;
2928
2929 if (!netif_running(netdev))
2930 return -ENETDOWN;
2931
2932 nla_for_each_nested(nl_txq_params,
2933 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2934 rem_txq_params) {
2935 result = nla_parse_nested_deprecated(tb,
2936 NL80211_TXQ_ATTR_MAX,
2937 nl_txq_params,
2938 txq_params_policy,
2939 info->extack);
2940 if (result)
2941 return result;
2942 result = parse_txq_params(tb, &txq_params);
2943 if (result)
2944 return result;
2945
2946 result = rdev_set_txq_params(rdev, netdev,
2947 &txq_params);
2948 if (result)
2949 return result;
2950 }
2951 }
2952
2953 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2954 result = __nl80211_set_channel(
2955 rdev,
2956 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2957 info);
2958 if (result)
2959 return result;
2960 }
2961
2962 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2963 struct wireless_dev *txp_wdev = wdev;
2964 enum nl80211_tx_power_setting type;
2965 int idx, mbm = 0;
2966
2967 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2968 txp_wdev = NULL;
2969
2970 if (!rdev->ops->set_tx_power)
2971 return -EOPNOTSUPP;
2972
2973 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2974 type = nla_get_u32(info->attrs[idx]);
2975
2976 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2977 (type != NL80211_TX_POWER_AUTOMATIC))
2978 return -EINVAL;
2979
2980 if (type != NL80211_TX_POWER_AUTOMATIC) {
2981 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2982 mbm = nla_get_u32(info->attrs[idx]);
2983 }
2984
2985 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2986 if (result)
2987 return result;
2988 }
2989
2990 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2991 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2992 u32 tx_ant, rx_ant;
2993
2994 if ((!rdev->wiphy.available_antennas_tx &&
2995 !rdev->wiphy.available_antennas_rx) ||
2996 !rdev->ops->set_antenna)
2997 return -EOPNOTSUPP;
2998
2999 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3000 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3001
3002 /* reject antenna configurations which don't match the
3003 * available antenna masks, except for the "all" mask */
3004 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3005 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3006 return -EINVAL;
3007
3008 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3009 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3010
3011 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3012 if (result)
3013 return result;
3014 }
3015
3016 changed = 0;
3017
3018 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3019 retry_short = nla_get_u8(
3020 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3021
3022 changed |= WIPHY_PARAM_RETRY_SHORT;
3023 }
3024
3025 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3026 retry_long = nla_get_u8(
3027 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3028
3029 changed |= WIPHY_PARAM_RETRY_LONG;
3030 }
3031
3032 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3033 frag_threshold = nla_get_u32(
3034 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3035 if (frag_threshold < 256)
3036 return -EINVAL;
3037
3038 if (frag_threshold != (u32) -1) {
3039 /*
3040 * Fragments (apart from the last one) are required to
3041 * have even length. Make the fragmentation code
3042 * simpler by stripping LSB should someone try to use
3043 * odd threshold value.
3044 */
3045 frag_threshold &= ~0x1;
3046 }
3047 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3048 }
3049
3050 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3051 rts_threshold = nla_get_u32(
3052 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3053 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3054 }
3055
3056 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3057 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3058 return -EINVAL;
3059
3060 coverage_class = nla_get_u8(
3061 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3062 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3063 }
3064
3065 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3066 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3067 return -EOPNOTSUPP;
3068
3069 changed |= WIPHY_PARAM_DYN_ACK;
3070 }
3071
3072 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3073 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3074 NL80211_EXT_FEATURE_TXQS))
3075 return -EOPNOTSUPP;
3076 txq_limit = nla_get_u32(
3077 info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3078 changed |= WIPHY_PARAM_TXQ_LIMIT;
3079 }
3080
3081 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3082 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3083 NL80211_EXT_FEATURE_TXQS))
3084 return -EOPNOTSUPP;
3085 txq_memory_limit = nla_get_u32(
3086 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3087 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3088 }
3089
3090 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3091 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3092 NL80211_EXT_FEATURE_TXQS))
3093 return -EOPNOTSUPP;
3094 txq_quantum = nla_get_u32(
3095 info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3096 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3097 }
3098
3099 if (changed) {
3100 u8 old_retry_short, old_retry_long;
3101 u32 old_frag_threshold, old_rts_threshold;
3102 u8 old_coverage_class;
3103 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3104
3105 if (!rdev->ops->set_wiphy_params)
3106 return -EOPNOTSUPP;
3107
3108 old_retry_short = rdev->wiphy.retry_short;
3109 old_retry_long = rdev->wiphy.retry_long;
3110 old_frag_threshold = rdev->wiphy.frag_threshold;
3111 old_rts_threshold = rdev->wiphy.rts_threshold;
3112 old_coverage_class = rdev->wiphy.coverage_class;
3113 old_txq_limit = rdev->wiphy.txq_limit;
3114 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3115 old_txq_quantum = rdev->wiphy.txq_quantum;
3116
3117 if (changed & WIPHY_PARAM_RETRY_SHORT)
3118 rdev->wiphy.retry_short = retry_short;
3119 if (changed & WIPHY_PARAM_RETRY_LONG)
3120 rdev->wiphy.retry_long = retry_long;
3121 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3122 rdev->wiphy.frag_threshold = frag_threshold;
3123 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3124 rdev->wiphy.rts_threshold = rts_threshold;
3125 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3126 rdev->wiphy.coverage_class = coverage_class;
3127 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3128 rdev->wiphy.txq_limit = txq_limit;
3129 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3130 rdev->wiphy.txq_memory_limit = txq_memory_limit;
3131 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3132 rdev->wiphy.txq_quantum = txq_quantum;
3133
3134 result = rdev_set_wiphy_params(rdev, changed);
3135 if (result) {
3136 rdev->wiphy.retry_short = old_retry_short;
3137 rdev->wiphy.retry_long = old_retry_long;
3138 rdev->wiphy.frag_threshold = old_frag_threshold;
3139 rdev->wiphy.rts_threshold = old_rts_threshold;
3140 rdev->wiphy.coverage_class = old_coverage_class;
3141 rdev->wiphy.txq_limit = old_txq_limit;
3142 rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3143 rdev->wiphy.txq_quantum = old_txq_quantum;
3144 return result;
3145 }
3146 }
3147 return 0;
3148 }
3149
nl80211_send_chandef(struct sk_buff * msg,const struct cfg80211_chan_def * chandef)3150 static int nl80211_send_chandef(struct sk_buff *msg,
3151 const struct cfg80211_chan_def *chandef)
3152 {
3153 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3154 return -EINVAL;
3155
3156 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3157 chandef->chan->center_freq))
3158 return -ENOBUFS;
3159 switch (chandef->width) {
3160 case NL80211_CHAN_WIDTH_20_NOHT:
3161 case NL80211_CHAN_WIDTH_20:
3162 case NL80211_CHAN_WIDTH_40:
3163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3164 cfg80211_get_chandef_type(chandef)))
3165 return -ENOBUFS;
3166 break;
3167 default:
3168 break;
3169 }
3170 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3171 return -ENOBUFS;
3172 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3173 return -ENOBUFS;
3174 if (chandef->center_freq2 &&
3175 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3176 return -ENOBUFS;
3177 return 0;
3178 }
3179
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)3180 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3181 struct cfg80211_registered_device *rdev,
3182 struct wireless_dev *wdev,
3183 enum nl80211_commands cmd)
3184 {
3185 struct net_device *dev = wdev->netdev;
3186 void *hdr;
3187
3188 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3189 cmd != NL80211_CMD_DEL_INTERFACE &&
3190 cmd != NL80211_CMD_SET_INTERFACE);
3191
3192 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3193 if (!hdr)
3194 return -1;
3195
3196 if (dev &&
3197 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3198 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3199 goto nla_put_failure;
3200
3201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3202 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3203 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3204 NL80211_ATTR_PAD) ||
3205 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3206 nla_put_u32(msg, NL80211_ATTR_GENERATION,
3207 rdev->devlist_generation ^
3208 (cfg80211_rdev_list_generation << 2)) ||
3209 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3210 goto nla_put_failure;
3211
3212 if (rdev->ops->get_channel) {
3213 int ret;
3214 struct cfg80211_chan_def chandef = {};
3215
3216 ret = rdev_get_channel(rdev, wdev, &chandef);
3217 if (ret == 0) {
3218 if (nl80211_send_chandef(msg, &chandef))
3219 goto nla_put_failure;
3220 }
3221 }
3222
3223 if (rdev->ops->get_tx_power) {
3224 int dbm, ret;
3225
3226 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3227 if (ret == 0 &&
3228 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3229 DBM_TO_MBM(dbm)))
3230 goto nla_put_failure;
3231 }
3232
3233 wdev_lock(wdev);
3234 switch (wdev->iftype) {
3235 case NL80211_IFTYPE_AP:
3236 if (wdev->ssid_len &&
3237 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3238 goto nla_put_failure_locked;
3239 break;
3240 case NL80211_IFTYPE_STATION:
3241 case NL80211_IFTYPE_P2P_CLIENT:
3242 case NL80211_IFTYPE_ADHOC: {
3243 const u8 *ssid_ie;
3244 if (!wdev->current_bss)
3245 break;
3246 rcu_read_lock();
3247 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3248 WLAN_EID_SSID);
3249 if (ssid_ie &&
3250 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3251 goto nla_put_failure_rcu_locked;
3252 rcu_read_unlock();
3253 break;
3254 }
3255 default:
3256 /* nothing */
3257 break;
3258 }
3259 wdev_unlock(wdev);
3260
3261 if (rdev->ops->get_txq_stats) {
3262 struct cfg80211_txq_stats txqstats = {};
3263 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3264
3265 if (ret == 0 &&
3266 !nl80211_put_txq_stats(msg, &txqstats,
3267 NL80211_ATTR_TXQ_STATS))
3268 goto nla_put_failure;
3269 }
3270
3271 genlmsg_end(msg, hdr);
3272 return 0;
3273
3274 nla_put_failure_rcu_locked:
3275 rcu_read_unlock();
3276 nla_put_failure_locked:
3277 wdev_unlock(wdev);
3278 nla_put_failure:
3279 genlmsg_cancel(msg, hdr);
3280 return -EMSGSIZE;
3281 }
3282
nl80211_dump_interface(struct sk_buff * skb,struct netlink_callback * cb)3283 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3284 {
3285 int wp_idx = 0;
3286 int if_idx = 0;
3287 int wp_start = cb->args[0];
3288 int if_start = cb->args[1];
3289 int filter_wiphy = -1;
3290 struct cfg80211_registered_device *rdev;
3291 struct wireless_dev *wdev;
3292 int ret;
3293
3294 rtnl_lock();
3295 if (!cb->args[2]) {
3296 struct nl80211_dump_wiphy_state state = {
3297 .filter_wiphy = -1,
3298 };
3299
3300 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3301 if (ret)
3302 goto out_unlock;
3303
3304 filter_wiphy = state.filter_wiphy;
3305
3306 /*
3307 * if filtering, set cb->args[2] to +1 since 0 is the default
3308 * value needed to determine that parsing is necessary.
3309 */
3310 if (filter_wiphy >= 0)
3311 cb->args[2] = filter_wiphy + 1;
3312 else
3313 cb->args[2] = -1;
3314 } else if (cb->args[2] > 0) {
3315 filter_wiphy = cb->args[2] - 1;
3316 }
3317
3318 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3319 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3320 continue;
3321 if (wp_idx < wp_start) {
3322 wp_idx++;
3323 continue;
3324 }
3325
3326 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3327 continue;
3328
3329 if_idx = 0;
3330
3331 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3332 if (if_idx < if_start) {
3333 if_idx++;
3334 continue;
3335 }
3336 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3337 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3338 rdev, wdev,
3339 NL80211_CMD_NEW_INTERFACE) < 0) {
3340 goto out;
3341 }
3342 if_idx++;
3343 }
3344
3345 wp_idx++;
3346 }
3347 out:
3348 cb->args[0] = wp_idx;
3349 cb->args[1] = if_idx;
3350
3351 ret = skb->len;
3352 out_unlock:
3353 rtnl_unlock();
3354
3355 return ret;
3356 }
3357
nl80211_get_interface(struct sk_buff * skb,struct genl_info * info)3358 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3359 {
3360 struct sk_buff *msg;
3361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3362 struct wireless_dev *wdev = info->user_ptr[1];
3363
3364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3365 if (!msg)
3366 return -ENOMEM;
3367
3368 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3369 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3370 nlmsg_free(msg);
3371 return -ENOBUFS;
3372 }
3373
3374 return genlmsg_reply(msg, info);
3375 }
3376
3377 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3378 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3379 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3380 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3381 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3382 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3383 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3384 };
3385
parse_monitor_flags(struct nlattr * nla,u32 * mntrflags)3386 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3387 {
3388 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3389 int flag;
3390
3391 *mntrflags = 0;
3392
3393 if (!nla)
3394 return -EINVAL;
3395
3396 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3397 return -EINVAL;
3398
3399 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3400 if (flags[flag])
3401 *mntrflags |= (1<<flag);
3402
3403 *mntrflags |= MONITOR_FLAG_CHANGED;
3404
3405 return 0;
3406 }
3407
nl80211_parse_mon_options(struct cfg80211_registered_device * rdev,enum nl80211_iftype type,struct genl_info * info,struct vif_params * params)3408 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3409 enum nl80211_iftype type,
3410 struct genl_info *info,
3411 struct vif_params *params)
3412 {
3413 bool change = false;
3414 int err;
3415
3416 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3417 if (type != NL80211_IFTYPE_MONITOR)
3418 return -EINVAL;
3419
3420 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3421 ¶ms->flags);
3422 if (err)
3423 return err;
3424
3425 change = true;
3426 }
3427
3428 if (params->flags & MONITOR_FLAG_ACTIVE &&
3429 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3430 return -EOPNOTSUPP;
3431
3432 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3433 const u8 *mumimo_groups;
3434 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3435
3436 if (type != NL80211_IFTYPE_MONITOR)
3437 return -EINVAL;
3438
3439 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3440 return -EOPNOTSUPP;
3441
3442 mumimo_groups =
3443 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3444
3445 /* bits 0 and 63 are reserved and must be zero */
3446 if ((mumimo_groups[0] & BIT(0)) ||
3447 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3448 return -EINVAL;
3449
3450 params->vht_mumimo_groups = mumimo_groups;
3451 change = true;
3452 }
3453
3454 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3455 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3456
3457 if (type != NL80211_IFTYPE_MONITOR)
3458 return -EINVAL;
3459
3460 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3461 return -EOPNOTSUPP;
3462
3463 params->vht_mumimo_follow_addr =
3464 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3465 change = true;
3466 }
3467
3468 return change ? 1 : 0;
3469 }
3470
nl80211_valid_4addr(struct cfg80211_registered_device * rdev,struct net_device * netdev,u8 use_4addr,enum nl80211_iftype iftype)3471 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3472 struct net_device *netdev, u8 use_4addr,
3473 enum nl80211_iftype iftype)
3474 {
3475 if (!use_4addr) {
3476 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3477 return -EBUSY;
3478 return 0;
3479 }
3480
3481 switch (iftype) {
3482 case NL80211_IFTYPE_AP_VLAN:
3483 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3484 return 0;
3485 break;
3486 case NL80211_IFTYPE_STATION:
3487 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3488 return 0;
3489 break;
3490 default:
3491 break;
3492 }
3493
3494 return -EOPNOTSUPP;
3495 }
3496
nl80211_set_interface(struct sk_buff * skb,struct genl_info * info)3497 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3498 {
3499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3500 struct vif_params params;
3501 int err;
3502 enum nl80211_iftype otype, ntype;
3503 struct net_device *dev = info->user_ptr[1];
3504 bool change = false;
3505
3506 memset(¶ms, 0, sizeof(params));
3507
3508 otype = ntype = dev->ieee80211_ptr->iftype;
3509
3510 if (info->attrs[NL80211_ATTR_IFTYPE]) {
3511 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3512 if (otype != ntype)
3513 change = true;
3514 }
3515
3516 if (info->attrs[NL80211_ATTR_MESH_ID]) {
3517 struct wireless_dev *wdev = dev->ieee80211_ptr;
3518
3519 if (ntype != NL80211_IFTYPE_MESH_POINT)
3520 return -EINVAL;
3521 if (netif_running(dev))
3522 return -EBUSY;
3523
3524 wdev_lock(wdev);
3525 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3526 IEEE80211_MAX_MESH_ID_LEN);
3527 wdev->mesh_id_up_len =
3528 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3529 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3530 wdev->mesh_id_up_len);
3531 wdev_unlock(wdev);
3532 }
3533
3534 if (info->attrs[NL80211_ATTR_4ADDR]) {
3535 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3536 change = true;
3537 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3538 if (err)
3539 return err;
3540 } else {
3541 params.use_4addr = -1;
3542 }
3543
3544 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms);
3545 if (err < 0)
3546 return err;
3547 if (err > 0)
3548 change = true;
3549
3550 if (change)
3551 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms);
3552 else
3553 err = 0;
3554
3555 if (!err && params.use_4addr != -1)
3556 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3557
3558 if (change && !err) {
3559 struct wireless_dev *wdev = dev->ieee80211_ptr;
3560
3561 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3562 }
3563
3564 return err;
3565 }
3566
nl80211_new_interface(struct sk_buff * skb,struct genl_info * info)3567 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3568 {
3569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3570 struct vif_params params;
3571 struct wireless_dev *wdev;
3572 struct sk_buff *msg;
3573 int err;
3574 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3575
3576 /* to avoid failing a new interface creation due to pending removal */
3577 cfg80211_destroy_ifaces(rdev);
3578
3579 memset(¶ms, 0, sizeof(params));
3580
3581 if (!info->attrs[NL80211_ATTR_IFNAME])
3582 return -EINVAL;
3583
3584 if (info->attrs[NL80211_ATTR_IFTYPE])
3585 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3586
3587 if (!rdev->ops->add_virtual_intf)
3588 return -EOPNOTSUPP;
3589
3590 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3591 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3592 info->attrs[NL80211_ATTR_MAC]) {
3593 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3594 ETH_ALEN);
3595 if (!is_valid_ether_addr(params.macaddr))
3596 return -EADDRNOTAVAIL;
3597 }
3598
3599 if (info->attrs[NL80211_ATTR_4ADDR]) {
3600 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3601 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3602 if (err)
3603 return err;
3604 }
3605
3606 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3607 return -EOPNOTSUPP;
3608
3609 err = nl80211_parse_mon_options(rdev, type, info, ¶ms);
3610 if (err < 0)
3611 return err;
3612
3613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3614 if (!msg)
3615 return -ENOMEM;
3616
3617 wdev = rdev_add_virtual_intf(rdev,
3618 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3619 NET_NAME_USER, type, ¶ms);
3620 if (WARN_ON(!wdev)) {
3621 nlmsg_free(msg);
3622 return -EPROTO;
3623 } else if (IS_ERR(wdev)) {
3624 nlmsg_free(msg);
3625 return PTR_ERR(wdev);
3626 }
3627
3628 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3629 wdev->owner_nlportid = info->snd_portid;
3630
3631 switch (type) {
3632 case NL80211_IFTYPE_MESH_POINT:
3633 if (!info->attrs[NL80211_ATTR_MESH_ID])
3634 break;
3635 wdev_lock(wdev);
3636 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3637 IEEE80211_MAX_MESH_ID_LEN);
3638 wdev->mesh_id_up_len =
3639 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3640 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3641 wdev->mesh_id_up_len);
3642 wdev_unlock(wdev);
3643 break;
3644 case NL80211_IFTYPE_NAN:
3645 case NL80211_IFTYPE_P2P_DEVICE:
3646 /*
3647 * P2P Device and NAN do not have a netdev, so don't go
3648 * through the netdev notifier and must be added here
3649 */
3650 cfg80211_init_wdev(rdev, wdev);
3651 break;
3652 default:
3653 break;
3654 }
3655
3656 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3657 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3658 nlmsg_free(msg);
3659 return -ENOBUFS;
3660 }
3661
3662 return genlmsg_reply(msg, info);
3663 }
3664
nl80211_del_interface(struct sk_buff * skb,struct genl_info * info)3665 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3666 {
3667 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3668 struct wireless_dev *wdev = info->user_ptr[1];
3669
3670 if (!rdev->ops->del_virtual_intf)
3671 return -EOPNOTSUPP;
3672
3673 /*
3674 * If we remove a wireless device without a netdev then clear
3675 * user_ptr[1] so that nl80211_post_doit won't dereference it
3676 * to check if it needs to do dev_put(). Otherwise it crashes
3677 * since the wdev has been freed, unlike with a netdev where
3678 * we need the dev_put() for the netdev to really be freed.
3679 */
3680 if (!wdev->netdev)
3681 info->user_ptr[1] = NULL;
3682
3683 return rdev_del_virtual_intf(rdev, wdev);
3684 }
3685
nl80211_set_noack_map(struct sk_buff * skb,struct genl_info * info)3686 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3687 {
3688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3689 struct net_device *dev = info->user_ptr[1];
3690 u16 noack_map;
3691
3692 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3693 return -EINVAL;
3694
3695 if (!rdev->ops->set_noack_map)
3696 return -EOPNOTSUPP;
3697
3698 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3699
3700 return rdev_set_noack_map(rdev, dev, noack_map);
3701 }
3702
3703 struct get_key_cookie {
3704 struct sk_buff *msg;
3705 int error;
3706 int idx;
3707 };
3708
get_key_callback(void * c,struct key_params * params)3709 static void get_key_callback(void *c, struct key_params *params)
3710 {
3711 struct nlattr *key;
3712 struct get_key_cookie *cookie = c;
3713
3714 if ((params->key &&
3715 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3716 params->key_len, params->key)) ||
3717 (params->seq &&
3718 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3719 params->seq_len, params->seq)) ||
3720 (params->cipher &&
3721 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3722 params->cipher)))
3723 goto nla_put_failure;
3724
3725 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3726 if (!key)
3727 goto nla_put_failure;
3728
3729 if ((params->key &&
3730 nla_put(cookie->msg, NL80211_KEY_DATA,
3731 params->key_len, params->key)) ||
3732 (params->seq &&
3733 nla_put(cookie->msg, NL80211_KEY_SEQ,
3734 params->seq_len, params->seq)) ||
3735 (params->cipher &&
3736 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3737 params->cipher)))
3738 goto nla_put_failure;
3739
3740 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3741 goto nla_put_failure;
3742
3743 nla_nest_end(cookie->msg, key);
3744
3745 return;
3746 nla_put_failure:
3747 cookie->error = 1;
3748 }
3749
nl80211_get_key(struct sk_buff * skb,struct genl_info * info)3750 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3751 {
3752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3753 int err;
3754 struct net_device *dev = info->user_ptr[1];
3755 u8 key_idx = 0;
3756 const u8 *mac_addr = NULL;
3757 bool pairwise;
3758 struct get_key_cookie cookie = {
3759 .error = 0,
3760 };
3761 void *hdr;
3762 struct sk_buff *msg;
3763
3764 if (info->attrs[NL80211_ATTR_KEY_IDX])
3765 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3766
3767 if (info->attrs[NL80211_ATTR_MAC])
3768 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3769
3770 pairwise = !!mac_addr;
3771 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3772 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3773
3774 if (kt != NL80211_KEYTYPE_GROUP &&
3775 kt != NL80211_KEYTYPE_PAIRWISE)
3776 return -EINVAL;
3777 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3778 }
3779
3780 if (!rdev->ops->get_key)
3781 return -EOPNOTSUPP;
3782
3783 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3784 return -ENOENT;
3785
3786 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3787 if (!msg)
3788 return -ENOMEM;
3789
3790 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3791 NL80211_CMD_NEW_KEY);
3792 if (!hdr)
3793 goto nla_put_failure;
3794
3795 cookie.msg = msg;
3796 cookie.idx = key_idx;
3797
3798 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3799 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3800 goto nla_put_failure;
3801 if (mac_addr &&
3802 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3803 goto nla_put_failure;
3804
3805 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3806 get_key_callback);
3807
3808 if (err)
3809 goto free_msg;
3810
3811 if (cookie.error)
3812 goto nla_put_failure;
3813
3814 genlmsg_end(msg, hdr);
3815 return genlmsg_reply(msg, info);
3816
3817 nla_put_failure:
3818 err = -ENOBUFS;
3819 free_msg:
3820 nlmsg_free(msg);
3821 return err;
3822 }
3823
nl80211_set_key(struct sk_buff * skb,struct genl_info * info)3824 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3825 {
3826 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3827 struct key_parse key;
3828 int err;
3829 struct net_device *dev = info->user_ptr[1];
3830
3831 err = nl80211_parse_key(info, &key);
3832 if (err)
3833 return err;
3834
3835 if (key.idx < 0)
3836 return -EINVAL;
3837
3838 /* Only support setting default key and
3839 * Extended Key ID action NL80211_KEY_SET_TX.
3840 */
3841 if (!key.def && !key.defmgmt &&
3842 !(key.p.mode == NL80211_KEY_SET_TX))
3843 return -EINVAL;
3844
3845 wdev_lock(dev->ieee80211_ptr);
3846
3847 if (key.def) {
3848 if (!rdev->ops->set_default_key) {
3849 err = -EOPNOTSUPP;
3850 goto out;
3851 }
3852
3853 err = nl80211_key_allowed(dev->ieee80211_ptr);
3854 if (err)
3855 goto out;
3856
3857 err = rdev_set_default_key(rdev, dev, key.idx,
3858 key.def_uni, key.def_multi);
3859
3860 if (err)
3861 goto out;
3862
3863 #ifdef CONFIG_CFG80211_WEXT
3864 dev->ieee80211_ptr->wext.default_key = key.idx;
3865 #endif
3866 } else if (key.defmgmt) {
3867 if (key.def_uni || !key.def_multi) {
3868 err = -EINVAL;
3869 goto out;
3870 }
3871
3872 if (!rdev->ops->set_default_mgmt_key) {
3873 err = -EOPNOTSUPP;
3874 goto out;
3875 }
3876
3877 err = nl80211_key_allowed(dev->ieee80211_ptr);
3878 if (err)
3879 goto out;
3880
3881 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3882 if (err)
3883 goto out;
3884
3885 #ifdef CONFIG_CFG80211_WEXT
3886 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3887 #endif
3888 } else if (key.p.mode == NL80211_KEY_SET_TX &&
3889 wiphy_ext_feature_isset(&rdev->wiphy,
3890 NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3891 u8 *mac_addr = NULL;
3892
3893 if (info->attrs[NL80211_ATTR_MAC])
3894 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3895
3896 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3897 err = -EINVAL;
3898 goto out;
3899 }
3900
3901 err = rdev_add_key(rdev, dev, key.idx,
3902 NL80211_KEYTYPE_PAIRWISE,
3903 mac_addr, &key.p);
3904 } else {
3905 err = -EINVAL;
3906 }
3907 out:
3908 wdev_unlock(dev->ieee80211_ptr);
3909
3910 return err;
3911 }
3912
nl80211_new_key(struct sk_buff * skb,struct genl_info * info)3913 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3914 {
3915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3916 int err;
3917 struct net_device *dev = info->user_ptr[1];
3918 struct key_parse key;
3919 const u8 *mac_addr = NULL;
3920
3921 err = nl80211_parse_key(info, &key);
3922 if (err)
3923 return err;
3924
3925 if (!key.p.key)
3926 return -EINVAL;
3927
3928 if (info->attrs[NL80211_ATTR_MAC])
3929 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3930
3931 if (key.type == -1) {
3932 if (mac_addr)
3933 key.type = NL80211_KEYTYPE_PAIRWISE;
3934 else
3935 key.type = NL80211_KEYTYPE_GROUP;
3936 }
3937
3938 /* for now */
3939 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3940 key.type != NL80211_KEYTYPE_GROUP)
3941 return -EINVAL;
3942
3943 if (!rdev->ops->add_key)
3944 return -EOPNOTSUPP;
3945
3946 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3947 key.type == NL80211_KEYTYPE_PAIRWISE,
3948 mac_addr))
3949 return -EINVAL;
3950
3951 wdev_lock(dev->ieee80211_ptr);
3952 err = nl80211_key_allowed(dev->ieee80211_ptr);
3953 if (!err)
3954 err = rdev_add_key(rdev, dev, key.idx,
3955 key.type == NL80211_KEYTYPE_PAIRWISE,
3956 mac_addr, &key.p);
3957 wdev_unlock(dev->ieee80211_ptr);
3958
3959 return err;
3960 }
3961
nl80211_del_key(struct sk_buff * skb,struct genl_info * info)3962 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3963 {
3964 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3965 int err;
3966 struct net_device *dev = info->user_ptr[1];
3967 u8 *mac_addr = NULL;
3968 struct key_parse key;
3969
3970 err = nl80211_parse_key(info, &key);
3971 if (err)
3972 return err;
3973
3974 if (info->attrs[NL80211_ATTR_MAC])
3975 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3976
3977 if (key.type == -1) {
3978 if (mac_addr)
3979 key.type = NL80211_KEYTYPE_PAIRWISE;
3980 else
3981 key.type = NL80211_KEYTYPE_GROUP;
3982 }
3983
3984 /* for now */
3985 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3986 key.type != NL80211_KEYTYPE_GROUP)
3987 return -EINVAL;
3988
3989 if (!rdev->ops->del_key)
3990 return -EOPNOTSUPP;
3991
3992 wdev_lock(dev->ieee80211_ptr);
3993 err = nl80211_key_allowed(dev->ieee80211_ptr);
3994
3995 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3996 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3997 err = -ENOENT;
3998
3999 if (!err)
4000 err = rdev_del_key(rdev, dev, key.idx,
4001 key.type == NL80211_KEYTYPE_PAIRWISE,
4002 mac_addr);
4003
4004 #ifdef CONFIG_CFG80211_WEXT
4005 if (!err) {
4006 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4007 dev->ieee80211_ptr->wext.default_key = -1;
4008 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4009 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4010 }
4011 #endif
4012 wdev_unlock(dev->ieee80211_ptr);
4013
4014 return err;
4015 }
4016
4017 /* This function returns an error or the number of nested attributes */
validate_acl_mac_addrs(struct nlattr * nl_attr)4018 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4019 {
4020 struct nlattr *attr;
4021 int n_entries = 0, tmp;
4022
4023 nla_for_each_nested(attr, nl_attr, tmp) {
4024 if (nla_len(attr) != ETH_ALEN)
4025 return -EINVAL;
4026
4027 n_entries++;
4028 }
4029
4030 return n_entries;
4031 }
4032
4033 /*
4034 * This function parses ACL information and allocates memory for ACL data.
4035 * On successful return, the calling function is responsible to free the
4036 * ACL buffer returned by this function.
4037 */
parse_acl_data(struct wiphy * wiphy,struct genl_info * info)4038 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4039 struct genl_info *info)
4040 {
4041 enum nl80211_acl_policy acl_policy;
4042 struct nlattr *attr;
4043 struct cfg80211_acl_data *acl;
4044 int i = 0, n_entries, tmp;
4045
4046 if (!wiphy->max_acl_mac_addrs)
4047 return ERR_PTR(-EOPNOTSUPP);
4048
4049 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4050 return ERR_PTR(-EINVAL);
4051
4052 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4053 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4054 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4055 return ERR_PTR(-EINVAL);
4056
4057 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4058 return ERR_PTR(-EINVAL);
4059
4060 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4061 if (n_entries < 0)
4062 return ERR_PTR(n_entries);
4063
4064 if (n_entries > wiphy->max_acl_mac_addrs)
4065 return ERR_PTR(-ENOTSUPP);
4066
4067 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4068 if (!acl)
4069 return ERR_PTR(-ENOMEM);
4070
4071 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4072 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4073 i++;
4074 }
4075
4076 acl->n_acl_entries = n_entries;
4077 acl->acl_policy = acl_policy;
4078
4079 return acl;
4080 }
4081
nl80211_set_mac_acl(struct sk_buff * skb,struct genl_info * info)4082 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4083 {
4084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4085 struct net_device *dev = info->user_ptr[1];
4086 struct cfg80211_acl_data *acl;
4087 int err;
4088
4089 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4090 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4091 return -EOPNOTSUPP;
4092
4093 if (!dev->ieee80211_ptr->beacon_interval)
4094 return -EINVAL;
4095
4096 acl = parse_acl_data(&rdev->wiphy, info);
4097 if (IS_ERR(acl))
4098 return PTR_ERR(acl);
4099
4100 err = rdev_set_mac_acl(rdev, dev, acl);
4101
4102 kfree(acl);
4103
4104 return err;
4105 }
4106
rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len)4107 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4108 u8 *rates, u8 rates_len)
4109 {
4110 u8 i;
4111 u32 mask = 0;
4112
4113 for (i = 0; i < rates_len; i++) {
4114 int rate = (rates[i] & 0x7f) * 5;
4115 int ridx;
4116
4117 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4118 struct ieee80211_rate *srate =
4119 &sband->bitrates[ridx];
4120 if (rate == srate->bitrate) {
4121 mask |= 1 << ridx;
4122 break;
4123 }
4124 }
4125 if (ridx == sband->n_bitrates)
4126 return 0; /* rate not found */
4127 }
4128
4129 return mask;
4130 }
4131
ht_rateset_to_mask(struct ieee80211_supported_band * sband,u8 * rates,u8 rates_len,u8 mcs[IEEE80211_HT_MCS_MASK_LEN])4132 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4133 u8 *rates, u8 rates_len,
4134 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4135 {
4136 u8 i;
4137
4138 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4139
4140 for (i = 0; i < rates_len; i++) {
4141 int ridx, rbit;
4142
4143 ridx = rates[i] / 8;
4144 rbit = BIT(rates[i] % 8);
4145
4146 /* check validity */
4147 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4148 return false;
4149
4150 /* check availability */
4151 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4152 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4153 mcs[ridx] |= rbit;
4154 else
4155 return false;
4156 }
4157
4158 return true;
4159 }
4160
vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)4161 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4162 {
4163 u16 mcs_mask = 0;
4164
4165 switch (vht_mcs_map) {
4166 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4167 break;
4168 case IEEE80211_VHT_MCS_SUPPORT_0_7:
4169 mcs_mask = 0x00FF;
4170 break;
4171 case IEEE80211_VHT_MCS_SUPPORT_0_8:
4172 mcs_mask = 0x01FF;
4173 break;
4174 case IEEE80211_VHT_MCS_SUPPORT_0_9:
4175 mcs_mask = 0x03FF;
4176 break;
4177 default:
4178 break;
4179 }
4180
4181 return mcs_mask;
4182 }
4183
vht_build_mcs_mask(u16 vht_mcs_map,u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])4184 static void vht_build_mcs_mask(u16 vht_mcs_map,
4185 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4186 {
4187 u8 nss;
4188
4189 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4190 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4191 vht_mcs_map >>= 2;
4192 }
4193 }
4194
vht_set_mcs_mask(struct ieee80211_supported_band * sband,struct nl80211_txrate_vht * txrate,u16 mcs[NL80211_VHT_NSS_MAX])4195 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4196 struct nl80211_txrate_vht *txrate,
4197 u16 mcs[NL80211_VHT_NSS_MAX])
4198 {
4199 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4200 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4201 u8 i;
4202
4203 if (!sband->vht_cap.vht_supported)
4204 return false;
4205
4206 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4207
4208 /* Build vht_mcs_mask from VHT capabilities */
4209 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4210
4211 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4212 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4213 mcs[i] = txrate->mcs[i];
4214 else
4215 return false;
4216 }
4217
4218 return true;
4219 }
4220
4221 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4222 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4223 .len = NL80211_MAX_SUPP_RATES },
4224 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4225 .len = NL80211_MAX_SUPP_HT_RATES },
4226 [NL80211_TXRATE_VHT] = {
4227 .type = NLA_EXACT_LEN_WARN,
4228 .len = sizeof(struct nl80211_txrate_vht),
4229 },
4230 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4231 };
4232
nl80211_parse_tx_bitrate_mask(struct genl_info * info,struct cfg80211_bitrate_mask * mask)4233 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4234 struct cfg80211_bitrate_mask *mask)
4235 {
4236 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4238 int rem, i;
4239 struct nlattr *tx_rates;
4240 struct ieee80211_supported_band *sband;
4241 u16 vht_tx_mcs_map;
4242
4243 memset(mask, 0, sizeof(*mask));
4244 /* Default to all rates enabled */
4245 for (i = 0; i < NUM_NL80211_BANDS; i++) {
4246 sband = rdev->wiphy.bands[i];
4247
4248 if (!sband)
4249 continue;
4250
4251 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4252 memcpy(mask->control[i].ht_mcs,
4253 sband->ht_cap.mcs.rx_mask,
4254 sizeof(mask->control[i].ht_mcs));
4255
4256 if (!sband->vht_cap.vht_supported)
4257 continue;
4258
4259 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4260 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4261 }
4262
4263 /* if no rates are given set it back to the defaults */
4264 if (!info->attrs[NL80211_ATTR_TX_RATES])
4265 goto out;
4266
4267 /* The nested attribute uses enum nl80211_band as the index. This maps
4268 * directly to the enum nl80211_band values used in cfg80211.
4269 */
4270 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4271 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4272 enum nl80211_band band = nla_type(tx_rates);
4273 int err;
4274
4275 if (band < 0 || band >= NUM_NL80211_BANDS)
4276 return -EINVAL;
4277 sband = rdev->wiphy.bands[band];
4278 if (sband == NULL)
4279 return -EINVAL;
4280 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4281 tx_rates,
4282 nl80211_txattr_policy,
4283 info->extack);
4284 if (err)
4285 return err;
4286 if (tb[NL80211_TXRATE_LEGACY]) {
4287 mask->control[band].legacy = rateset_to_mask(
4288 sband,
4289 nla_data(tb[NL80211_TXRATE_LEGACY]),
4290 nla_len(tb[NL80211_TXRATE_LEGACY]));
4291 if ((mask->control[band].legacy == 0) &&
4292 nla_len(tb[NL80211_TXRATE_LEGACY]))
4293 return -EINVAL;
4294 }
4295 if (tb[NL80211_TXRATE_HT]) {
4296 if (!ht_rateset_to_mask(
4297 sband,
4298 nla_data(tb[NL80211_TXRATE_HT]),
4299 nla_len(tb[NL80211_TXRATE_HT]),
4300 mask->control[band].ht_mcs))
4301 return -EINVAL;
4302 }
4303 if (tb[NL80211_TXRATE_VHT]) {
4304 if (!vht_set_mcs_mask(
4305 sband,
4306 nla_data(tb[NL80211_TXRATE_VHT]),
4307 mask->control[band].vht_mcs))
4308 return -EINVAL;
4309 }
4310 if (tb[NL80211_TXRATE_GI]) {
4311 mask->control[band].gi =
4312 nla_get_u8(tb[NL80211_TXRATE_GI]);
4313 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4314 return -EINVAL;
4315 }
4316
4317 if (mask->control[band].legacy == 0) {
4318 /* don't allow empty legacy rates if HT or VHT
4319 * are not even supported.
4320 */
4321 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4322 rdev->wiphy.bands[band]->vht_cap.vht_supported))
4323 return -EINVAL;
4324
4325 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4326 if (mask->control[band].ht_mcs[i])
4327 goto out;
4328
4329 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4330 if (mask->control[band].vht_mcs[i])
4331 goto out;
4332
4333 /* legacy and mcs rates may not be both empty */
4334 return -EINVAL;
4335 }
4336 }
4337
4338 out:
4339 return 0;
4340 }
4341
validate_beacon_tx_rate(struct cfg80211_registered_device * rdev,enum nl80211_band band,struct cfg80211_bitrate_mask * beacon_rate)4342 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4343 enum nl80211_band band,
4344 struct cfg80211_bitrate_mask *beacon_rate)
4345 {
4346 u32 count_ht, count_vht, i;
4347 u32 rate = beacon_rate->control[band].legacy;
4348
4349 /* Allow only one rate */
4350 if (hweight32(rate) > 1)
4351 return -EINVAL;
4352
4353 count_ht = 0;
4354 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4355 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4356 return -EINVAL;
4357 } else if (beacon_rate->control[band].ht_mcs[i]) {
4358 count_ht++;
4359 if (count_ht > 1)
4360 return -EINVAL;
4361 }
4362 if (count_ht && rate)
4363 return -EINVAL;
4364 }
4365
4366 count_vht = 0;
4367 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4368 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4369 return -EINVAL;
4370 } else if (beacon_rate->control[band].vht_mcs[i]) {
4371 count_vht++;
4372 if (count_vht > 1)
4373 return -EINVAL;
4374 }
4375 if (count_vht && rate)
4376 return -EINVAL;
4377 }
4378
4379 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4380 return -EINVAL;
4381
4382 if (rate &&
4383 !wiphy_ext_feature_isset(&rdev->wiphy,
4384 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4385 return -EINVAL;
4386 if (count_ht &&
4387 !wiphy_ext_feature_isset(&rdev->wiphy,
4388 NL80211_EXT_FEATURE_BEACON_RATE_HT))
4389 return -EINVAL;
4390 if (count_vht &&
4391 !wiphy_ext_feature_isset(&rdev->wiphy,
4392 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4393 return -EINVAL;
4394
4395 return 0;
4396 }
4397
nl80211_parse_beacon(struct cfg80211_registered_device * rdev,struct nlattr * attrs[],struct cfg80211_beacon_data * bcn)4398 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4399 struct nlattr *attrs[],
4400 struct cfg80211_beacon_data *bcn)
4401 {
4402 bool haveinfo = false;
4403 int err;
4404
4405 memset(bcn, 0, sizeof(*bcn));
4406
4407 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4408 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4409 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4410 if (!bcn->head_len)
4411 return -EINVAL;
4412 haveinfo = true;
4413 }
4414
4415 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4416 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4417 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4418 haveinfo = true;
4419 }
4420
4421 if (!haveinfo)
4422 return -EINVAL;
4423
4424 if (attrs[NL80211_ATTR_IE]) {
4425 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4426 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4427 }
4428
4429 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4430 bcn->proberesp_ies =
4431 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4432 bcn->proberesp_ies_len =
4433 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4434 }
4435
4436 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4437 bcn->assocresp_ies =
4438 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4439 bcn->assocresp_ies_len =
4440 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4441 }
4442
4443 if (attrs[NL80211_ATTR_PROBE_RESP]) {
4444 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4445 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4446 }
4447
4448 if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4449 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4450
4451 err = nla_parse_nested_deprecated(tb,
4452 NL80211_FTM_RESP_ATTR_MAX,
4453 attrs[NL80211_ATTR_FTM_RESPONDER],
4454 NULL, NULL);
4455 if (err)
4456 return err;
4457
4458 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4459 wiphy_ext_feature_isset(&rdev->wiphy,
4460 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4461 bcn->ftm_responder = 1;
4462 else
4463 return -EOPNOTSUPP;
4464
4465 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4466 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4467 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4468 }
4469
4470 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4471 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4472 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4473 }
4474 } else {
4475 bcn->ftm_responder = -1;
4476 }
4477
4478 return 0;
4479 }
4480
nl80211_parse_he_obss_pd(struct nlattr * attrs,struct ieee80211_he_obss_pd * he_obss_pd)4481 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4482 struct ieee80211_he_obss_pd *he_obss_pd)
4483 {
4484 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4485 int err;
4486
4487 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4488 he_obss_pd_policy, NULL);
4489 if (err)
4490 return err;
4491
4492 if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4493 !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4494 return -EINVAL;
4495
4496 he_obss_pd->min_offset =
4497 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4498 he_obss_pd->max_offset =
4499 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4500
4501 if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4502 return -EINVAL;
4503
4504 he_obss_pd->enable = true;
4505
4506 return 0;
4507 }
4508
nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings * params,const u8 * rates)4509 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4510 const u8 *rates)
4511 {
4512 int i;
4513
4514 if (!rates)
4515 return;
4516
4517 for (i = 0; i < rates[1]; i++) {
4518 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4519 params->ht_required = true;
4520 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4521 params->vht_required = true;
4522 }
4523 }
4524
4525 /*
4526 * Since the nl80211 API didn't include, from the beginning, attributes about
4527 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4528 * benefit of drivers that rebuild IEs in the firmware.
4529 */
nl80211_calculate_ap_params(struct cfg80211_ap_settings * params)4530 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4531 {
4532 const struct cfg80211_beacon_data *bcn = ¶ms->beacon;
4533 size_t ies_len = bcn->tail_len;
4534 const u8 *ies = bcn->tail;
4535 const u8 *rates;
4536 const u8 *cap;
4537
4538 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4539 nl80211_check_ap_rate_selectors(params, rates);
4540
4541 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4542 nl80211_check_ap_rate_selectors(params, rates);
4543
4544 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4545 if (cap && cap[1] >= sizeof(*params->ht_cap))
4546 params->ht_cap = (void *)(cap + 2);
4547 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4548 if (cap && cap[1] >= sizeof(*params->vht_cap))
4549 params->vht_cap = (void *)(cap + 2);
4550 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4551 if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4552 params->he_cap = (void *)(cap + 3);
4553 }
4554
nl80211_get_ap_channel(struct cfg80211_registered_device * rdev,struct cfg80211_ap_settings * params)4555 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4556 struct cfg80211_ap_settings *params)
4557 {
4558 struct wireless_dev *wdev;
4559 bool ret = false;
4560
4561 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4562 if (wdev->iftype != NL80211_IFTYPE_AP &&
4563 wdev->iftype != NL80211_IFTYPE_P2P_GO)
4564 continue;
4565
4566 if (!wdev->preset_chandef.chan)
4567 continue;
4568
4569 params->chandef = wdev->preset_chandef;
4570 ret = true;
4571 break;
4572 }
4573
4574 return ret;
4575 }
4576
nl80211_valid_auth_type(struct cfg80211_registered_device * rdev,enum nl80211_auth_type auth_type,enum nl80211_commands cmd)4577 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4578 enum nl80211_auth_type auth_type,
4579 enum nl80211_commands cmd)
4580 {
4581 if (auth_type > NL80211_AUTHTYPE_MAX)
4582 return false;
4583
4584 switch (cmd) {
4585 case NL80211_CMD_AUTHENTICATE:
4586 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4587 auth_type == NL80211_AUTHTYPE_SAE)
4588 return false;
4589 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4590 NL80211_EXT_FEATURE_FILS_STA) &&
4591 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4592 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4593 auth_type == NL80211_AUTHTYPE_FILS_PK))
4594 return false;
4595 return true;
4596 case NL80211_CMD_CONNECT:
4597 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4598 !wiphy_ext_feature_isset(&rdev->wiphy,
4599 NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4600 auth_type == NL80211_AUTHTYPE_SAE)
4601 return false;
4602
4603 /* FILS with SK PFS or PK not supported yet */
4604 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4605 auth_type == NL80211_AUTHTYPE_FILS_PK)
4606 return false;
4607 if (!wiphy_ext_feature_isset(
4608 &rdev->wiphy,
4609 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4610 auth_type == NL80211_AUTHTYPE_FILS_SK)
4611 return false;
4612 return true;
4613 case NL80211_CMD_START_AP:
4614 /* SAE not supported yet */
4615 if (auth_type == NL80211_AUTHTYPE_SAE)
4616 return false;
4617 /* FILS not supported yet */
4618 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4619 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4620 auth_type == NL80211_AUTHTYPE_FILS_PK)
4621 return false;
4622 return true;
4623 default:
4624 return false;
4625 }
4626 }
4627
nl80211_start_ap(struct sk_buff * skb,struct genl_info * info)4628 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4629 {
4630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4631 struct net_device *dev = info->user_ptr[1];
4632 struct wireless_dev *wdev = dev->ieee80211_ptr;
4633 struct cfg80211_ap_settings params;
4634 int err;
4635
4636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4637 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4638 return -EOPNOTSUPP;
4639
4640 if (!rdev->ops->start_ap)
4641 return -EOPNOTSUPP;
4642
4643 if (wdev->beacon_interval)
4644 return -EALREADY;
4645
4646 memset(¶ms, 0, sizeof(params));
4647
4648 /* these are required for START_AP */
4649 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4650 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4651 !info->attrs[NL80211_ATTR_BEACON_HEAD])
4652 return -EINVAL;
4653
4654 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon);
4655 if (err)
4656 return err;
4657
4658 params.beacon_interval =
4659 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4660 params.dtim_period =
4661 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4662
4663 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4664 params.beacon_interval);
4665 if (err)
4666 return err;
4667
4668 /*
4669 * In theory, some of these attributes should be required here
4670 * but since they were not used when the command was originally
4671 * added, keep them optional for old user space programs to let
4672 * them continue to work with drivers that do not need the
4673 * additional information -- drivers must check!
4674 */
4675 if (info->attrs[NL80211_ATTR_SSID]) {
4676 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4677 params.ssid_len =
4678 nla_len(info->attrs[NL80211_ATTR_SSID]);
4679 if (params.ssid_len == 0 ||
4680 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4681 return -EINVAL;
4682 }
4683
4684 if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4685 params.hidden_ssid = nla_get_u32(
4686 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4687
4688 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4689
4690 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4691 params.auth_type = nla_get_u32(
4692 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4693 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4694 NL80211_CMD_START_AP))
4695 return -EINVAL;
4696 } else
4697 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4698
4699 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto,
4700 NL80211_MAX_NR_CIPHER_SUITES);
4701 if (err)
4702 return err;
4703
4704 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4705 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4706 return -EOPNOTSUPP;
4707 params.inactivity_timeout = nla_get_u16(
4708 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4709 }
4710
4711 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4712 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4713 return -EINVAL;
4714 params.p2p_ctwindow =
4715 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4716 if (params.p2p_ctwindow != 0 &&
4717 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4718 return -EINVAL;
4719 }
4720
4721 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4722 u8 tmp;
4723
4724 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4725 return -EINVAL;
4726 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4727 params.p2p_opp_ps = tmp;
4728 if (params.p2p_opp_ps != 0 &&
4729 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4730 return -EINVAL;
4731 }
4732
4733 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4734 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
4735 if (err)
4736 return err;
4737 } else if (wdev->preset_chandef.chan) {
4738 params.chandef = wdev->preset_chandef;
4739 } else if (!nl80211_get_ap_channel(rdev, ¶ms))
4740 return -EINVAL;
4741
4742 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
4743 wdev->iftype))
4744 return -EINVAL;
4745
4746 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4747 err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate);
4748 if (err)
4749 return err;
4750
4751 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4752 ¶ms.beacon_rate);
4753 if (err)
4754 return err;
4755 }
4756
4757 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4758 params.smps_mode =
4759 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4760 switch (params.smps_mode) {
4761 case NL80211_SMPS_OFF:
4762 break;
4763 case NL80211_SMPS_STATIC:
4764 if (!(rdev->wiphy.features &
4765 NL80211_FEATURE_STATIC_SMPS))
4766 return -EINVAL;
4767 break;
4768 case NL80211_SMPS_DYNAMIC:
4769 if (!(rdev->wiphy.features &
4770 NL80211_FEATURE_DYNAMIC_SMPS))
4771 return -EINVAL;
4772 break;
4773 default:
4774 return -EINVAL;
4775 }
4776 } else {
4777 params.smps_mode = NL80211_SMPS_OFF;
4778 }
4779
4780 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4781 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4782 return -EOPNOTSUPP;
4783
4784 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4785 params.acl = parse_acl_data(&rdev->wiphy, info);
4786 if (IS_ERR(params.acl))
4787 return PTR_ERR(params.acl);
4788 }
4789
4790 params.twt_responder =
4791 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4792
4793 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4794 err = nl80211_parse_he_obss_pd(
4795 info->attrs[NL80211_ATTR_HE_OBSS_PD],
4796 ¶ms.he_obss_pd);
4797 if (err)
4798 return err;
4799 }
4800
4801 nl80211_calculate_ap_params(¶ms);
4802
4803 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4804 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4805
4806 wdev_lock(wdev);
4807 err = rdev_start_ap(rdev, dev, ¶ms);
4808 if (!err) {
4809 wdev->preset_chandef = params.chandef;
4810 wdev->beacon_interval = params.beacon_interval;
4811 wdev->chandef = params.chandef;
4812 wdev->ssid_len = params.ssid_len;
4813 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4814
4815 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4816 wdev->conn_owner_nlportid = info->snd_portid;
4817 }
4818 wdev_unlock(wdev);
4819
4820 kfree(params.acl);
4821
4822 return err;
4823 }
4824
nl80211_set_beacon(struct sk_buff * skb,struct genl_info * info)4825 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4826 {
4827 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4828 struct net_device *dev = info->user_ptr[1];
4829 struct wireless_dev *wdev = dev->ieee80211_ptr;
4830 struct cfg80211_beacon_data params;
4831 int err;
4832
4833 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4834 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4835 return -EOPNOTSUPP;
4836
4837 if (!rdev->ops->change_beacon)
4838 return -EOPNOTSUPP;
4839
4840 if (!wdev->beacon_interval)
4841 return -EINVAL;
4842
4843 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms);
4844 if (err)
4845 return err;
4846
4847 wdev_lock(wdev);
4848 err = rdev_change_beacon(rdev, dev, ¶ms);
4849 wdev_unlock(wdev);
4850
4851 return err;
4852 }
4853
nl80211_stop_ap(struct sk_buff * skb,struct genl_info * info)4854 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4855 {
4856 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4857 struct net_device *dev = info->user_ptr[1];
4858
4859 return cfg80211_stop_ap(rdev, dev, false);
4860 }
4861
4862 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4863 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4864 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4865 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4866 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4867 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4868 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4869 };
4870
parse_station_flags(struct genl_info * info,enum nl80211_iftype iftype,struct station_parameters * params)4871 static int parse_station_flags(struct genl_info *info,
4872 enum nl80211_iftype iftype,
4873 struct station_parameters *params)
4874 {
4875 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4876 struct nlattr *nla;
4877 int flag;
4878
4879 /*
4880 * Try parsing the new attribute first so userspace
4881 * can specify both for older kernels.
4882 */
4883 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4884 if (nla) {
4885 struct nl80211_sta_flag_update *sta_flags;
4886
4887 sta_flags = nla_data(nla);
4888 params->sta_flags_mask = sta_flags->mask;
4889 params->sta_flags_set = sta_flags->set;
4890 params->sta_flags_set &= params->sta_flags_mask;
4891 if ((params->sta_flags_mask |
4892 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4893 return -EINVAL;
4894 return 0;
4895 }
4896
4897 /* if present, parse the old attribute */
4898
4899 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4900 if (!nla)
4901 return 0;
4902
4903 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4904 return -EINVAL;
4905
4906 /*
4907 * Only allow certain flags for interface types so that
4908 * other attributes are silently ignored. Remember that
4909 * this is backward compatibility code with old userspace
4910 * and shouldn't be hit in other cases anyway.
4911 */
4912 switch (iftype) {
4913 case NL80211_IFTYPE_AP:
4914 case NL80211_IFTYPE_AP_VLAN:
4915 case NL80211_IFTYPE_P2P_GO:
4916 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4917 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4918 BIT(NL80211_STA_FLAG_WME) |
4919 BIT(NL80211_STA_FLAG_MFP);
4920 break;
4921 case NL80211_IFTYPE_P2P_CLIENT:
4922 case NL80211_IFTYPE_STATION:
4923 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4924 BIT(NL80211_STA_FLAG_TDLS_PEER);
4925 break;
4926 case NL80211_IFTYPE_MESH_POINT:
4927 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4928 BIT(NL80211_STA_FLAG_MFP) |
4929 BIT(NL80211_STA_FLAG_AUTHORIZED);
4930 break;
4931 default:
4932 return -EINVAL;
4933 }
4934
4935 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4936 if (flags[flag]) {
4937 params->sta_flags_set |= (1<<flag);
4938
4939 /* no longer support new API additions in old API */
4940 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4941 return -EINVAL;
4942 }
4943 }
4944
4945 return 0;
4946 }
4947
nl80211_put_sta_rate(struct sk_buff * msg,struct rate_info * info,int attr)4948 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4949 {
4950 struct nlattr *rate;
4951 u32 bitrate;
4952 u16 bitrate_compat;
4953 enum nl80211_rate_info rate_flg;
4954
4955 rate = nla_nest_start_noflag(msg, attr);
4956 if (!rate)
4957 return false;
4958
4959 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4960 bitrate = cfg80211_calculate_bitrate(info);
4961 /* report 16-bit bitrate only if we can */
4962 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4963 if (bitrate > 0 &&
4964 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4965 return false;
4966 if (bitrate_compat > 0 &&
4967 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4968 return false;
4969
4970 switch (info->bw) {
4971 case RATE_INFO_BW_5:
4972 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4973 break;
4974 case RATE_INFO_BW_10:
4975 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4976 break;
4977 default:
4978 WARN_ON(1);
4979 /* fall through */
4980 case RATE_INFO_BW_20:
4981 rate_flg = 0;
4982 break;
4983 case RATE_INFO_BW_40:
4984 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4985 break;
4986 case RATE_INFO_BW_80:
4987 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4988 break;
4989 case RATE_INFO_BW_160:
4990 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4991 break;
4992 case RATE_INFO_BW_HE_RU:
4993 rate_flg = 0;
4994 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
4995 }
4996
4997 if (rate_flg && nla_put_flag(msg, rate_flg))
4998 return false;
4999
5000 if (info->flags & RATE_INFO_FLAGS_MCS) {
5001 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5002 return false;
5003 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5004 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5005 return false;
5006 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5007 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5008 return false;
5009 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5010 return false;
5011 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5012 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5013 return false;
5014 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5015 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5016 return false;
5017 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5018 return false;
5019 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5020 return false;
5021 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5022 return false;
5023 if (info->bw == RATE_INFO_BW_HE_RU &&
5024 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5025 info->he_ru_alloc))
5026 return false;
5027 }
5028
5029 nla_nest_end(msg, rate);
5030 return true;
5031 }
5032
nl80211_put_signal(struct sk_buff * msg,u8 mask,s8 * signal,int id)5033 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5034 int id)
5035 {
5036 void *attr;
5037 int i = 0;
5038
5039 if (!mask)
5040 return true;
5041
5042 attr = nla_nest_start_noflag(msg, id);
5043 if (!attr)
5044 return false;
5045
5046 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5047 if (!(mask & BIT(i)))
5048 continue;
5049
5050 if (nla_put_u8(msg, i, signal[i]))
5051 return false;
5052 }
5053
5054 nla_nest_end(msg, attr);
5055
5056 return true;
5057 }
5058
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)5059 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5060 u32 seq, int flags,
5061 struct cfg80211_registered_device *rdev,
5062 struct net_device *dev,
5063 const u8 *mac_addr, struct station_info *sinfo)
5064 {
5065 void *hdr;
5066 struct nlattr *sinfoattr, *bss_param;
5067
5068 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5069 if (!hdr) {
5070 cfg80211_sinfo_release_content(sinfo);
5071 return -1;
5072 }
5073
5074 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5075 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5076 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5077 goto nla_put_failure;
5078
5079 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5080 if (!sinfoattr)
5081 goto nla_put_failure;
5082
5083 #define PUT_SINFO(attr, memb, type) do { \
5084 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
5085 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5086 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
5087 sinfo->memb)) \
5088 goto nla_put_failure; \
5089 } while (0)
5090 #define PUT_SINFO_U64(attr, memb) do { \
5091 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \
5092 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
5093 sinfo->memb, NL80211_STA_INFO_PAD)) \
5094 goto nla_put_failure; \
5095 } while (0)
5096
5097 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5098 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5099 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5100
5101 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5102 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5103 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5104 (u32)sinfo->rx_bytes))
5105 goto nla_put_failure;
5106
5107 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5108 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5109 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5110 (u32)sinfo->tx_bytes))
5111 goto nla_put_failure;
5112
5113 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5114 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5115 PUT_SINFO(LLID, llid, u16);
5116 PUT_SINFO(PLID, plid, u16);
5117 PUT_SINFO(PLINK_STATE, plink_state, u8);
5118 PUT_SINFO_U64(RX_DURATION, rx_duration);
5119 PUT_SINFO_U64(TX_DURATION, tx_duration);
5120
5121 if (wiphy_ext_feature_isset(&rdev->wiphy,
5122 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5123 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5124
5125 switch (rdev->wiphy.signal_type) {
5126 case CFG80211_SIGNAL_TYPE_MBM:
5127 PUT_SINFO(SIGNAL, signal, u8);
5128 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5129 break;
5130 default:
5131 break;
5132 }
5133 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5134 if (!nl80211_put_signal(msg, sinfo->chains,
5135 sinfo->chain_signal,
5136 NL80211_STA_INFO_CHAIN_SIGNAL))
5137 goto nla_put_failure;
5138 }
5139 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5140 if (!nl80211_put_signal(msg, sinfo->chains,
5141 sinfo->chain_signal_avg,
5142 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5143 goto nla_put_failure;
5144 }
5145 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5146 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5147 NL80211_STA_INFO_TX_BITRATE))
5148 goto nla_put_failure;
5149 }
5150 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5151 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5152 NL80211_STA_INFO_RX_BITRATE))
5153 goto nla_put_failure;
5154 }
5155
5156 PUT_SINFO(RX_PACKETS, rx_packets, u32);
5157 PUT_SINFO(TX_PACKETS, tx_packets, u32);
5158 PUT_SINFO(TX_RETRIES, tx_retries, u32);
5159 PUT_SINFO(TX_FAILED, tx_failed, u32);
5160 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5161 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5162 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5163 PUT_SINFO(LOCAL_PM, local_pm, u32);
5164 PUT_SINFO(PEER_PM, peer_pm, u32);
5165 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5166 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5167
5168 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5169 bss_param = nla_nest_start_noflag(msg,
5170 NL80211_STA_INFO_BSS_PARAM);
5171 if (!bss_param)
5172 goto nla_put_failure;
5173
5174 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5175 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5176 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5177 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5178 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5179 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5180 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5181 sinfo->bss_param.dtim_period) ||
5182 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5183 sinfo->bss_param.beacon_interval))
5184 goto nla_put_failure;
5185
5186 nla_nest_end(msg, bss_param);
5187 }
5188 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5189 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5190 sizeof(struct nl80211_sta_flag_update),
5191 &sinfo->sta_flags))
5192 goto nla_put_failure;
5193
5194 PUT_SINFO_U64(T_OFFSET, t_offset);
5195 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5196 PUT_SINFO_U64(BEACON_RX, rx_beacon);
5197 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5198 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5199 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5200 if (wiphy_ext_feature_isset(&rdev->wiphy,
5201 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5202 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5203 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5204 }
5205
5206 #undef PUT_SINFO
5207 #undef PUT_SINFO_U64
5208
5209 if (sinfo->pertid) {
5210 struct nlattr *tidsattr;
5211 int tid;
5212
5213 tidsattr = nla_nest_start_noflag(msg,
5214 NL80211_STA_INFO_TID_STATS);
5215 if (!tidsattr)
5216 goto nla_put_failure;
5217
5218 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5219 struct cfg80211_tid_stats *tidstats;
5220 struct nlattr *tidattr;
5221
5222 tidstats = &sinfo->pertid[tid];
5223
5224 if (!tidstats->filled)
5225 continue;
5226
5227 tidattr = nla_nest_start_noflag(msg, tid + 1);
5228 if (!tidattr)
5229 goto nla_put_failure;
5230
5231 #define PUT_TIDVAL_U64(attr, memb) do { \
5232 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
5233 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
5234 tidstats->memb, NL80211_TID_STATS_PAD)) \
5235 goto nla_put_failure; \
5236 } while (0)
5237
5238 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5239 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5240 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5241 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5242
5243 #undef PUT_TIDVAL_U64
5244 if ((tidstats->filled &
5245 BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5246 !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5247 NL80211_TID_STATS_TXQ_STATS))
5248 goto nla_put_failure;
5249
5250 nla_nest_end(msg, tidattr);
5251 }
5252
5253 nla_nest_end(msg, tidsattr);
5254 }
5255
5256 nla_nest_end(msg, sinfoattr);
5257
5258 if (sinfo->assoc_req_ies_len &&
5259 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5260 sinfo->assoc_req_ies))
5261 goto nla_put_failure;
5262
5263 cfg80211_sinfo_release_content(sinfo);
5264 genlmsg_end(msg, hdr);
5265 return 0;
5266
5267 nla_put_failure:
5268 cfg80211_sinfo_release_content(sinfo);
5269 genlmsg_cancel(msg, hdr);
5270 return -EMSGSIZE;
5271 }
5272
nl80211_dump_station(struct sk_buff * skb,struct netlink_callback * cb)5273 static int nl80211_dump_station(struct sk_buff *skb,
5274 struct netlink_callback *cb)
5275 {
5276 struct station_info sinfo;
5277 struct cfg80211_registered_device *rdev;
5278 struct wireless_dev *wdev;
5279 u8 mac_addr[ETH_ALEN];
5280 int sta_idx = cb->args[2];
5281 int err;
5282
5283 rtnl_lock();
5284 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5285 if (err)
5286 goto out_err;
5287
5288 if (!wdev->netdev) {
5289 err = -EINVAL;
5290 goto out_err;
5291 }
5292
5293 if (!rdev->ops->dump_station) {
5294 err = -EOPNOTSUPP;
5295 goto out_err;
5296 }
5297
5298 while (1) {
5299 memset(&sinfo, 0, sizeof(sinfo));
5300 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5301 mac_addr, &sinfo);
5302 if (err == -ENOENT)
5303 break;
5304 if (err)
5305 goto out_err;
5306
5307 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5308 NETLINK_CB(cb->skb).portid,
5309 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5310 rdev, wdev->netdev, mac_addr,
5311 &sinfo) < 0)
5312 goto out;
5313
5314 sta_idx++;
5315 }
5316
5317 out:
5318 cb->args[2] = sta_idx;
5319 err = skb->len;
5320 out_err:
5321 rtnl_unlock();
5322
5323 return err;
5324 }
5325
nl80211_get_station(struct sk_buff * skb,struct genl_info * info)5326 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5327 {
5328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5329 struct net_device *dev = info->user_ptr[1];
5330 struct station_info sinfo;
5331 struct sk_buff *msg;
5332 u8 *mac_addr = NULL;
5333 int err;
5334
5335 memset(&sinfo, 0, sizeof(sinfo));
5336
5337 if (!info->attrs[NL80211_ATTR_MAC])
5338 return -EINVAL;
5339
5340 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5341
5342 if (!rdev->ops->get_station)
5343 return -EOPNOTSUPP;
5344
5345 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5346 if (err)
5347 return err;
5348
5349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5350 if (!msg) {
5351 cfg80211_sinfo_release_content(&sinfo);
5352 return -ENOMEM;
5353 }
5354
5355 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5356 info->snd_portid, info->snd_seq, 0,
5357 rdev, dev, mac_addr, &sinfo) < 0) {
5358 nlmsg_free(msg);
5359 return -ENOBUFS;
5360 }
5361
5362 return genlmsg_reply(msg, info);
5363 }
5364
cfg80211_check_station_change(struct wiphy * wiphy,struct station_parameters * params,enum cfg80211_station_type statype)5365 int cfg80211_check_station_change(struct wiphy *wiphy,
5366 struct station_parameters *params,
5367 enum cfg80211_station_type statype)
5368 {
5369 if (params->listen_interval != -1 &&
5370 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5371 return -EINVAL;
5372
5373 if (params->support_p2p_ps != -1 &&
5374 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5375 return -EINVAL;
5376
5377 if (params->aid &&
5378 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5379 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5380 return -EINVAL;
5381
5382 /* When you run into this, adjust the code below for the new flag */
5383 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5384
5385 switch (statype) {
5386 case CFG80211_STA_MESH_PEER_KERNEL:
5387 case CFG80211_STA_MESH_PEER_USER:
5388 /*
5389 * No ignoring the TDLS flag here -- the userspace mesh
5390 * code doesn't have the bug of including TDLS in the
5391 * mask everywhere.
5392 */
5393 if (params->sta_flags_mask &
5394 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5395 BIT(NL80211_STA_FLAG_MFP) |
5396 BIT(NL80211_STA_FLAG_AUTHORIZED)))
5397 return -EINVAL;
5398 break;
5399 case CFG80211_STA_TDLS_PEER_SETUP:
5400 case CFG80211_STA_TDLS_PEER_ACTIVE:
5401 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5402 return -EINVAL;
5403 /* ignore since it can't change */
5404 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5405 break;
5406 default:
5407 /* disallow mesh-specific things */
5408 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5409 return -EINVAL;
5410 if (params->local_pm)
5411 return -EINVAL;
5412 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5413 return -EINVAL;
5414 }
5415
5416 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5417 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5418 /* TDLS can't be set, ... */
5419 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5420 return -EINVAL;
5421 /*
5422 * ... but don't bother the driver with it. This works around
5423 * a hostapd/wpa_supplicant issue -- it always includes the
5424 * TLDS_PEER flag in the mask even for AP mode.
5425 */
5426 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5427 }
5428
5429 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5430 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5431 /* reject other things that can't change */
5432 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5433 return -EINVAL;
5434 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5435 return -EINVAL;
5436 if (params->supported_rates)
5437 return -EINVAL;
5438 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5439 params->he_capa)
5440 return -EINVAL;
5441 }
5442
5443 if (statype != CFG80211_STA_AP_CLIENT &&
5444 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5445 if (params->vlan)
5446 return -EINVAL;
5447 }
5448
5449 switch (statype) {
5450 case CFG80211_STA_AP_MLME_CLIENT:
5451 /* Use this only for authorizing/unauthorizing a station */
5452 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5453 return -EOPNOTSUPP;
5454 break;
5455 case CFG80211_STA_AP_CLIENT:
5456 case CFG80211_STA_AP_CLIENT_UNASSOC:
5457 /* accept only the listed bits */
5458 if (params->sta_flags_mask &
5459 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5460 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5461 BIT(NL80211_STA_FLAG_ASSOCIATED) |
5462 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5463 BIT(NL80211_STA_FLAG_WME) |
5464 BIT(NL80211_STA_FLAG_MFP)))
5465 return -EINVAL;
5466
5467 /* but authenticated/associated only if driver handles it */
5468 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5469 params->sta_flags_mask &
5470 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5471 BIT(NL80211_STA_FLAG_ASSOCIATED)))
5472 return -EINVAL;
5473 break;
5474 case CFG80211_STA_IBSS:
5475 case CFG80211_STA_AP_STA:
5476 /* reject any changes other than AUTHORIZED */
5477 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5478 return -EINVAL;
5479 break;
5480 case CFG80211_STA_TDLS_PEER_SETUP:
5481 /* reject any changes other than AUTHORIZED or WME */
5482 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5483 BIT(NL80211_STA_FLAG_WME)))
5484 return -EINVAL;
5485 /* force (at least) rates when authorizing */
5486 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5487 !params->supported_rates)
5488 return -EINVAL;
5489 break;
5490 case CFG80211_STA_TDLS_PEER_ACTIVE:
5491 /* reject any changes */
5492 return -EINVAL;
5493 case CFG80211_STA_MESH_PEER_KERNEL:
5494 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5495 return -EINVAL;
5496 break;
5497 case CFG80211_STA_MESH_PEER_USER:
5498 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5499 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5500 return -EINVAL;
5501 break;
5502 }
5503
5504 /*
5505 * Older kernel versions ignored this attribute entirely, so don't
5506 * reject attempts to update it but mark it as unused instead so the
5507 * driver won't look at the data.
5508 */
5509 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5510 statype != CFG80211_STA_TDLS_PEER_SETUP)
5511 params->opmode_notif_used = false;
5512
5513 return 0;
5514 }
5515 EXPORT_SYMBOL(cfg80211_check_station_change);
5516
5517 /*
5518 * Get vlan interface making sure it is running and on the right wiphy.
5519 */
get_vlan(struct genl_info * info,struct cfg80211_registered_device * rdev)5520 static struct net_device *get_vlan(struct genl_info *info,
5521 struct cfg80211_registered_device *rdev)
5522 {
5523 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5524 struct net_device *v;
5525 int ret;
5526
5527 if (!vlanattr)
5528 return NULL;
5529
5530 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5531 if (!v)
5532 return ERR_PTR(-ENODEV);
5533
5534 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5535 ret = -EINVAL;
5536 goto error;
5537 }
5538
5539 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5540 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5541 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5542 ret = -EINVAL;
5543 goto error;
5544 }
5545
5546 if (!netif_running(v)) {
5547 ret = -ENETDOWN;
5548 goto error;
5549 }
5550
5551 return v;
5552 error:
5553 dev_put(v);
5554 return ERR_PTR(ret);
5555 }
5556
5557 static const struct nla_policy
5558 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5559 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5560 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5561 };
5562
nl80211_parse_sta_wme(struct genl_info * info,struct station_parameters * params)5563 static int nl80211_parse_sta_wme(struct genl_info *info,
5564 struct station_parameters *params)
5565 {
5566 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5567 struct nlattr *nla;
5568 int err;
5569
5570 /* parse WME attributes if present */
5571 if (!info->attrs[NL80211_ATTR_STA_WME])
5572 return 0;
5573
5574 nla = info->attrs[NL80211_ATTR_STA_WME];
5575 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5576 nl80211_sta_wme_policy,
5577 info->extack);
5578 if (err)
5579 return err;
5580
5581 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5582 params->uapsd_queues = nla_get_u8(
5583 tb[NL80211_STA_WME_UAPSD_QUEUES]);
5584 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5585 return -EINVAL;
5586
5587 if (tb[NL80211_STA_WME_MAX_SP])
5588 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5589
5590 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5591 return -EINVAL;
5592
5593 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5594
5595 return 0;
5596 }
5597
nl80211_parse_sta_channel_info(struct genl_info * info,struct station_parameters * params)5598 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5599 struct station_parameters *params)
5600 {
5601 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5602 params->supported_channels =
5603 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5604 params->supported_channels_len =
5605 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5606 /*
5607 * Need to include at least one (first channel, number of
5608 * channels) tuple for each subband, and must have proper
5609 * tuples for the rest of the data as well.
5610 */
5611 if (params->supported_channels_len < 2)
5612 return -EINVAL;
5613 if (params->supported_channels_len % 2)
5614 return -EINVAL;
5615 }
5616
5617 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5618 params->supported_oper_classes =
5619 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5620 params->supported_oper_classes_len =
5621 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5622 /*
5623 * The value of the Length field of the Supported Operating
5624 * Classes element is between 2 and 253.
5625 */
5626 if (params->supported_oper_classes_len < 2 ||
5627 params->supported_oper_classes_len > 253)
5628 return -EINVAL;
5629 }
5630 return 0;
5631 }
5632
nl80211_set_station_tdls(struct genl_info * info,struct station_parameters * params)5633 static int nl80211_set_station_tdls(struct genl_info *info,
5634 struct station_parameters *params)
5635 {
5636 int err;
5637 /* Dummy STA entry gets updated once the peer capabilities are known */
5638 if (info->attrs[NL80211_ATTR_PEER_AID])
5639 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5640 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5641 params->ht_capa =
5642 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5643 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5644 params->vht_capa =
5645 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5646 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5647 params->he_capa =
5648 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5649 params->he_capa_len =
5650 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5651
5652 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5653 return -EINVAL;
5654 }
5655
5656 err = nl80211_parse_sta_channel_info(info, params);
5657 if (err)
5658 return err;
5659
5660 return nl80211_parse_sta_wme(info, params);
5661 }
5662
nl80211_parse_sta_txpower_setting(struct genl_info * info,struct station_parameters * params)5663 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5664 struct station_parameters *params)
5665 {
5666 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5667 int idx;
5668
5669 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5670 if (!rdev->ops->set_tx_power ||
5671 !wiphy_ext_feature_isset(&rdev->wiphy,
5672 NL80211_EXT_FEATURE_STA_TX_PWR))
5673 return -EOPNOTSUPP;
5674
5675 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5676 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5677
5678 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5679 idx = NL80211_ATTR_STA_TX_POWER;
5680
5681 if (info->attrs[idx])
5682 params->txpwr.power =
5683 nla_get_s16(info->attrs[idx]);
5684 else
5685 return -EINVAL;
5686 }
5687 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5688 }
5689
5690 return 0;
5691 }
5692
nl80211_set_station(struct sk_buff * skb,struct genl_info * info)5693 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5694 {
5695 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5696 struct net_device *dev = info->user_ptr[1];
5697 struct station_parameters params;
5698 u8 *mac_addr;
5699 int err;
5700
5701 memset(¶ms, 0, sizeof(params));
5702
5703 if (!rdev->ops->change_station)
5704 return -EOPNOTSUPP;
5705
5706 /*
5707 * AID and listen_interval properties can be set only for unassociated
5708 * station. Include these parameters here and will check them in
5709 * cfg80211_check_station_change().
5710 */
5711 if (info->attrs[NL80211_ATTR_STA_AID])
5712 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5713
5714 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5715 params.listen_interval =
5716 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5717 else
5718 params.listen_interval = -1;
5719
5720 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5721 params.support_p2p_ps =
5722 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5723 else
5724 params.support_p2p_ps = -1;
5725
5726 if (!info->attrs[NL80211_ATTR_MAC])
5727 return -EINVAL;
5728
5729 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5730
5731 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5732 params.supported_rates =
5733 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5734 params.supported_rates_len =
5735 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5736 }
5737
5738 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5739 params.capability =
5740 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5741 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5742 }
5743
5744 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5745 params.ext_capab =
5746 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5747 params.ext_capab_len =
5748 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5749 }
5750
5751 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
5752 return -EINVAL;
5753
5754 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5755 params.plink_action =
5756 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5757
5758 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5759 params.plink_state =
5760 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5761 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5762 params.peer_aid = nla_get_u16(
5763 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5764 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5765 }
5766
5767 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5768 params.local_pm = nla_get_u32(
5769 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5770
5771 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5772 params.opmode_notif_used = true;
5773 params.opmode_notif =
5774 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5775 }
5776
5777 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5778 params.airtime_weight =
5779 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5780
5781 if (params.airtime_weight &&
5782 !wiphy_ext_feature_isset(&rdev->wiphy,
5783 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5784 return -EOPNOTSUPP;
5785
5786 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
5787 if (err)
5788 return err;
5789
5790 /* Include parameters for TDLS peer (will check later) */
5791 err = nl80211_set_station_tdls(info, ¶ms);
5792 if (err)
5793 return err;
5794
5795 params.vlan = get_vlan(info, rdev);
5796 if (IS_ERR(params.vlan))
5797 return PTR_ERR(params.vlan);
5798
5799 switch (dev->ieee80211_ptr->iftype) {
5800 case NL80211_IFTYPE_AP:
5801 case NL80211_IFTYPE_AP_VLAN:
5802 case NL80211_IFTYPE_P2P_GO:
5803 case NL80211_IFTYPE_P2P_CLIENT:
5804 case NL80211_IFTYPE_STATION:
5805 case NL80211_IFTYPE_ADHOC:
5806 case NL80211_IFTYPE_MESH_POINT:
5807 break;
5808 default:
5809 err = -EOPNOTSUPP;
5810 goto out_put_vlan;
5811 }
5812
5813 /* driver will call cfg80211_check_station_change() */
5814 err = rdev_change_station(rdev, dev, mac_addr, ¶ms);
5815
5816 out_put_vlan:
5817 if (params.vlan)
5818 dev_put(params.vlan);
5819
5820 return err;
5821 }
5822
nl80211_new_station(struct sk_buff * skb,struct genl_info * info)5823 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5824 {
5825 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5826 int err;
5827 struct net_device *dev = info->user_ptr[1];
5828 struct station_parameters params;
5829 u8 *mac_addr = NULL;
5830 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5831 BIT(NL80211_STA_FLAG_ASSOCIATED);
5832
5833 memset(¶ms, 0, sizeof(params));
5834
5835 if (!rdev->ops->add_station)
5836 return -EOPNOTSUPP;
5837
5838 if (!info->attrs[NL80211_ATTR_MAC])
5839 return -EINVAL;
5840
5841 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5842 return -EINVAL;
5843
5844 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5845 return -EINVAL;
5846
5847 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5848 !info->attrs[NL80211_ATTR_PEER_AID])
5849 return -EINVAL;
5850
5851 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5852 params.supported_rates =
5853 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5854 params.supported_rates_len =
5855 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5856 params.listen_interval =
5857 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5858
5859 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5860 params.support_p2p_ps =
5861 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5862 } else {
5863 /*
5864 * if not specified, assume it's supported for P2P GO interface,
5865 * and is NOT supported for AP interface
5866 */
5867 params.support_p2p_ps =
5868 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5869 }
5870
5871 if (info->attrs[NL80211_ATTR_PEER_AID])
5872 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5873 else
5874 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5875
5876 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5877 params.capability =
5878 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5879 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5880 }
5881
5882 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5883 params.ext_capab =
5884 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5885 params.ext_capab_len =
5886 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5887 }
5888
5889 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5890 params.ht_capa =
5891 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5892
5893 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5894 params.vht_capa =
5895 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5896
5897 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5898 params.he_capa =
5899 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5900 params.he_capa_len =
5901 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5902
5903 /* max len is validated in nla policy */
5904 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5905 return -EINVAL;
5906 }
5907
5908 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5909 params.opmode_notif_used = true;
5910 params.opmode_notif =
5911 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5912 }
5913
5914 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5915 params.plink_action =
5916 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5917
5918 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5919 params.airtime_weight =
5920 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5921
5922 if (params.airtime_weight &&
5923 !wiphy_ext_feature_isset(&rdev->wiphy,
5924 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5925 return -EOPNOTSUPP;
5926
5927 err = nl80211_parse_sta_txpower_setting(info, ¶ms);
5928 if (err)
5929 return err;
5930
5931 err = nl80211_parse_sta_channel_info(info, ¶ms);
5932 if (err)
5933 return err;
5934
5935 err = nl80211_parse_sta_wme(info, ¶ms);
5936 if (err)
5937 return err;
5938
5939 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms))
5940 return -EINVAL;
5941
5942 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5943 * as userspace might just pass through the capabilities from the IEs
5944 * directly, rather than enforcing this restriction and returning an
5945 * error in this case.
5946 */
5947 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5948 params.ht_capa = NULL;
5949 params.vht_capa = NULL;
5950
5951 /* HE requires WME */
5952 if (params.he_capa_len)
5953 return -EINVAL;
5954 }
5955
5956 /* When you run into this, adjust the code below for the new flag */
5957 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5958
5959 switch (dev->ieee80211_ptr->iftype) {
5960 case NL80211_IFTYPE_AP:
5961 case NL80211_IFTYPE_AP_VLAN:
5962 case NL80211_IFTYPE_P2P_GO:
5963 /* ignore WME attributes if iface/sta is not capable */
5964 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5965 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5966 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5967
5968 /* TDLS peers cannot be added */
5969 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5970 info->attrs[NL80211_ATTR_PEER_AID])
5971 return -EINVAL;
5972 /* but don't bother the driver with it */
5973 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5974
5975 /* allow authenticated/associated only if driver handles it */
5976 if (!(rdev->wiphy.features &
5977 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5978 params.sta_flags_mask & auth_assoc)
5979 return -EINVAL;
5980
5981 /* Older userspace, or userspace wanting to be compatible with
5982 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5983 * and assoc flags in the mask, but assumes the station will be
5984 * added as associated anyway since this was the required driver
5985 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5986 * introduced.
5987 * In order to not bother drivers with this quirk in the API
5988 * set the flags in both the mask and set for new stations in
5989 * this case.
5990 */
5991 if (!(params.sta_flags_mask & auth_assoc)) {
5992 params.sta_flags_mask |= auth_assoc;
5993 params.sta_flags_set |= auth_assoc;
5994 }
5995
5996 /* must be last in here for error handling */
5997 params.vlan = get_vlan(info, rdev);
5998 if (IS_ERR(params.vlan))
5999 return PTR_ERR(params.vlan);
6000 break;
6001 case NL80211_IFTYPE_MESH_POINT:
6002 /* ignore uAPSD data */
6003 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6004
6005 /* associated is disallowed */
6006 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6007 return -EINVAL;
6008 /* TDLS peers cannot be added */
6009 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6010 info->attrs[NL80211_ATTR_PEER_AID])
6011 return -EINVAL;
6012 break;
6013 case NL80211_IFTYPE_STATION:
6014 case NL80211_IFTYPE_P2P_CLIENT:
6015 /* ignore uAPSD data */
6016 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6017
6018 /* these are disallowed */
6019 if (params.sta_flags_mask &
6020 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6021 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6022 return -EINVAL;
6023 /* Only TDLS peers can be added */
6024 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6025 return -EINVAL;
6026 /* Can only add if TDLS ... */
6027 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6028 return -EOPNOTSUPP;
6029 /* ... with external setup is supported */
6030 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6031 return -EOPNOTSUPP;
6032 /*
6033 * Older wpa_supplicant versions always mark the TDLS peer
6034 * as authorized, but it shouldn't yet be.
6035 */
6036 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6037 break;
6038 default:
6039 return -EOPNOTSUPP;
6040 }
6041
6042 /* be aware of params.vlan when changing code here */
6043
6044 err = rdev_add_station(rdev, dev, mac_addr, ¶ms);
6045
6046 if (params.vlan)
6047 dev_put(params.vlan);
6048 return err;
6049 }
6050
nl80211_del_station(struct sk_buff * skb,struct genl_info * info)6051 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6052 {
6053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6054 struct net_device *dev = info->user_ptr[1];
6055 struct station_del_parameters params;
6056
6057 memset(¶ms, 0, sizeof(params));
6058
6059 if (info->attrs[NL80211_ATTR_MAC])
6060 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6061
6062 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6063 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6064 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6065 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6066 return -EINVAL;
6067
6068 if (!rdev->ops->del_station)
6069 return -EOPNOTSUPP;
6070
6071 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6072 params.subtype =
6073 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6074 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6075 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6076 return -EINVAL;
6077 } else {
6078 /* Default to Deauthentication frame */
6079 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6080 }
6081
6082 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6083 params.reason_code =
6084 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6085 if (params.reason_code == 0)
6086 return -EINVAL; /* 0 is reserved */
6087 } else {
6088 /* Default to reason code 2 */
6089 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6090 }
6091
6092 return rdev_del_station(rdev, dev, ¶ms);
6093 }
6094
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)6095 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6096 int flags, struct net_device *dev,
6097 u8 *dst, u8 *next_hop,
6098 struct mpath_info *pinfo)
6099 {
6100 void *hdr;
6101 struct nlattr *pinfoattr;
6102
6103 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6104 if (!hdr)
6105 return -1;
6106
6107 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6108 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6109 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6110 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6111 goto nla_put_failure;
6112
6113 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6114 if (!pinfoattr)
6115 goto nla_put_failure;
6116 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6117 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6118 pinfo->frame_qlen))
6119 goto nla_put_failure;
6120 if (((pinfo->filled & MPATH_INFO_SN) &&
6121 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6122 ((pinfo->filled & MPATH_INFO_METRIC) &&
6123 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6124 pinfo->metric)) ||
6125 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6126 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6127 pinfo->exptime)) ||
6128 ((pinfo->filled & MPATH_INFO_FLAGS) &&
6129 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6130 pinfo->flags)) ||
6131 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6132 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6133 pinfo->discovery_timeout)) ||
6134 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6135 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6136 pinfo->discovery_retries)) ||
6137 ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6138 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6139 pinfo->hop_count)) ||
6140 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6141 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6142 pinfo->path_change_count)))
6143 goto nla_put_failure;
6144
6145 nla_nest_end(msg, pinfoattr);
6146
6147 genlmsg_end(msg, hdr);
6148 return 0;
6149
6150 nla_put_failure:
6151 genlmsg_cancel(msg, hdr);
6152 return -EMSGSIZE;
6153 }
6154
nl80211_dump_mpath(struct sk_buff * skb,struct netlink_callback * cb)6155 static int nl80211_dump_mpath(struct sk_buff *skb,
6156 struct netlink_callback *cb)
6157 {
6158 struct mpath_info pinfo;
6159 struct cfg80211_registered_device *rdev;
6160 struct wireless_dev *wdev;
6161 u8 dst[ETH_ALEN];
6162 u8 next_hop[ETH_ALEN];
6163 int path_idx = cb->args[2];
6164 int err;
6165
6166 rtnl_lock();
6167 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6168 if (err)
6169 goto out_err;
6170
6171 if (!rdev->ops->dump_mpath) {
6172 err = -EOPNOTSUPP;
6173 goto out_err;
6174 }
6175
6176 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6177 err = -EOPNOTSUPP;
6178 goto out_err;
6179 }
6180
6181 while (1) {
6182 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6183 next_hop, &pinfo);
6184 if (err == -ENOENT)
6185 break;
6186 if (err)
6187 goto out_err;
6188
6189 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6190 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6191 wdev->netdev, dst, next_hop,
6192 &pinfo) < 0)
6193 goto out;
6194
6195 path_idx++;
6196 }
6197
6198 out:
6199 cb->args[2] = path_idx;
6200 err = skb->len;
6201 out_err:
6202 rtnl_unlock();
6203 return err;
6204 }
6205
nl80211_get_mpath(struct sk_buff * skb,struct genl_info * info)6206 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6207 {
6208 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6209 int err;
6210 struct net_device *dev = info->user_ptr[1];
6211 struct mpath_info pinfo;
6212 struct sk_buff *msg;
6213 u8 *dst = NULL;
6214 u8 next_hop[ETH_ALEN];
6215
6216 memset(&pinfo, 0, sizeof(pinfo));
6217
6218 if (!info->attrs[NL80211_ATTR_MAC])
6219 return -EINVAL;
6220
6221 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6222
6223 if (!rdev->ops->get_mpath)
6224 return -EOPNOTSUPP;
6225
6226 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6227 return -EOPNOTSUPP;
6228
6229 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6230 if (err)
6231 return err;
6232
6233 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6234 if (!msg)
6235 return -ENOMEM;
6236
6237 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6238 dev, dst, next_hop, &pinfo) < 0) {
6239 nlmsg_free(msg);
6240 return -ENOBUFS;
6241 }
6242
6243 return genlmsg_reply(msg, info);
6244 }
6245
nl80211_set_mpath(struct sk_buff * skb,struct genl_info * info)6246 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6247 {
6248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6249 struct net_device *dev = info->user_ptr[1];
6250 u8 *dst = NULL;
6251 u8 *next_hop = NULL;
6252
6253 if (!info->attrs[NL80211_ATTR_MAC])
6254 return -EINVAL;
6255
6256 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6257 return -EINVAL;
6258
6259 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6260 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6261
6262 if (!rdev->ops->change_mpath)
6263 return -EOPNOTSUPP;
6264
6265 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6266 return -EOPNOTSUPP;
6267
6268 return rdev_change_mpath(rdev, dev, dst, next_hop);
6269 }
6270
nl80211_new_mpath(struct sk_buff * skb,struct genl_info * info)6271 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6272 {
6273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6274 struct net_device *dev = info->user_ptr[1];
6275 u8 *dst = NULL;
6276 u8 *next_hop = NULL;
6277
6278 if (!info->attrs[NL80211_ATTR_MAC])
6279 return -EINVAL;
6280
6281 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6282 return -EINVAL;
6283
6284 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6285 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6286
6287 if (!rdev->ops->add_mpath)
6288 return -EOPNOTSUPP;
6289
6290 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6291 return -EOPNOTSUPP;
6292
6293 return rdev_add_mpath(rdev, dev, dst, next_hop);
6294 }
6295
nl80211_del_mpath(struct sk_buff * skb,struct genl_info * info)6296 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6297 {
6298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6299 struct net_device *dev = info->user_ptr[1];
6300 u8 *dst = NULL;
6301
6302 if (info->attrs[NL80211_ATTR_MAC])
6303 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6304
6305 if (!rdev->ops->del_mpath)
6306 return -EOPNOTSUPP;
6307
6308 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6309 return -EOPNOTSUPP;
6310
6311 return rdev_del_mpath(rdev, dev, dst);
6312 }
6313
nl80211_get_mpp(struct sk_buff * skb,struct genl_info * info)6314 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6315 {
6316 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6317 int err;
6318 struct net_device *dev = info->user_ptr[1];
6319 struct mpath_info pinfo;
6320 struct sk_buff *msg;
6321 u8 *dst = NULL;
6322 u8 mpp[ETH_ALEN];
6323
6324 memset(&pinfo, 0, sizeof(pinfo));
6325
6326 if (!info->attrs[NL80211_ATTR_MAC])
6327 return -EINVAL;
6328
6329 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6330
6331 if (!rdev->ops->get_mpp)
6332 return -EOPNOTSUPP;
6333
6334 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6335 return -EOPNOTSUPP;
6336
6337 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6338 if (err)
6339 return err;
6340
6341 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6342 if (!msg)
6343 return -ENOMEM;
6344
6345 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6346 dev, dst, mpp, &pinfo) < 0) {
6347 nlmsg_free(msg);
6348 return -ENOBUFS;
6349 }
6350
6351 return genlmsg_reply(msg, info);
6352 }
6353
nl80211_dump_mpp(struct sk_buff * skb,struct netlink_callback * cb)6354 static int nl80211_dump_mpp(struct sk_buff *skb,
6355 struct netlink_callback *cb)
6356 {
6357 struct mpath_info pinfo;
6358 struct cfg80211_registered_device *rdev;
6359 struct wireless_dev *wdev;
6360 u8 dst[ETH_ALEN];
6361 u8 mpp[ETH_ALEN];
6362 int path_idx = cb->args[2];
6363 int err;
6364
6365 rtnl_lock();
6366 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6367 if (err)
6368 goto out_err;
6369
6370 if (!rdev->ops->dump_mpp) {
6371 err = -EOPNOTSUPP;
6372 goto out_err;
6373 }
6374
6375 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6376 err = -EOPNOTSUPP;
6377 goto out_err;
6378 }
6379
6380 while (1) {
6381 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6382 mpp, &pinfo);
6383 if (err == -ENOENT)
6384 break;
6385 if (err)
6386 goto out_err;
6387
6388 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6389 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6390 wdev->netdev, dst, mpp,
6391 &pinfo) < 0)
6392 goto out;
6393
6394 path_idx++;
6395 }
6396
6397 out:
6398 cb->args[2] = path_idx;
6399 err = skb->len;
6400 out_err:
6401 rtnl_unlock();
6402 return err;
6403 }
6404
nl80211_set_bss(struct sk_buff * skb,struct genl_info * info)6405 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6406 {
6407 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6408 struct net_device *dev = info->user_ptr[1];
6409 struct wireless_dev *wdev = dev->ieee80211_ptr;
6410 struct bss_parameters params;
6411 int err;
6412
6413 memset(¶ms, 0, sizeof(params));
6414 /* default to not changing parameters */
6415 params.use_cts_prot = -1;
6416 params.use_short_preamble = -1;
6417 params.use_short_slot_time = -1;
6418 params.ap_isolate = -1;
6419 params.ht_opmode = -1;
6420 params.p2p_ctwindow = -1;
6421 params.p2p_opp_ps = -1;
6422
6423 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6424 params.use_cts_prot =
6425 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6426 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6427 params.use_short_preamble =
6428 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6429 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6430 params.use_short_slot_time =
6431 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6432 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6433 params.basic_rates =
6434 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6435 params.basic_rates_len =
6436 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6437 }
6438 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6439 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6440 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6441 params.ht_opmode =
6442 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6443
6444 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6446 return -EINVAL;
6447 params.p2p_ctwindow =
6448 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6449 if (params.p2p_ctwindow != 0 &&
6450 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6451 return -EINVAL;
6452 }
6453
6454 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6455 u8 tmp;
6456
6457 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6458 return -EINVAL;
6459 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6460 params.p2p_opp_ps = tmp;
6461 if (params.p2p_opp_ps &&
6462 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6463 return -EINVAL;
6464 }
6465
6466 if (!rdev->ops->change_bss)
6467 return -EOPNOTSUPP;
6468
6469 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6470 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6471 return -EOPNOTSUPP;
6472
6473 wdev_lock(wdev);
6474 err = rdev_change_bss(rdev, dev, ¶ms);
6475 wdev_unlock(wdev);
6476
6477 return err;
6478 }
6479
nl80211_req_set_reg(struct sk_buff * skb,struct genl_info * info)6480 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6481 {
6482 char *data = NULL;
6483 bool is_indoor;
6484 enum nl80211_user_reg_hint_type user_reg_hint_type;
6485 u32 owner_nlportid;
6486
6487 /*
6488 * You should only get this when cfg80211 hasn't yet initialized
6489 * completely when built-in to the kernel right between the time
6490 * window between nl80211_init() and regulatory_init(), if that is
6491 * even possible.
6492 */
6493 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6494 return -EINPROGRESS;
6495
6496 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6497 user_reg_hint_type =
6498 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6499 else
6500 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6501
6502 switch (user_reg_hint_type) {
6503 case NL80211_USER_REG_HINT_USER:
6504 case NL80211_USER_REG_HINT_CELL_BASE:
6505 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6506 return -EINVAL;
6507
6508 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6509 return regulatory_hint_user(data, user_reg_hint_type);
6510 case NL80211_USER_REG_HINT_INDOOR:
6511 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6512 owner_nlportid = info->snd_portid;
6513 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6514 } else {
6515 owner_nlportid = 0;
6516 is_indoor = true;
6517 }
6518
6519 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6520 default:
6521 return -EINVAL;
6522 }
6523 }
6524
nl80211_reload_regdb(struct sk_buff * skb,struct genl_info * info)6525 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6526 {
6527 return reg_reload_regdb();
6528 }
6529
nl80211_get_mesh_config(struct sk_buff * skb,struct genl_info * info)6530 static int nl80211_get_mesh_config(struct sk_buff *skb,
6531 struct genl_info *info)
6532 {
6533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6534 struct net_device *dev = info->user_ptr[1];
6535 struct wireless_dev *wdev = dev->ieee80211_ptr;
6536 struct mesh_config cur_params;
6537 int err = 0;
6538 void *hdr;
6539 struct nlattr *pinfoattr;
6540 struct sk_buff *msg;
6541
6542 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6543 return -EOPNOTSUPP;
6544
6545 if (!rdev->ops->get_mesh_config)
6546 return -EOPNOTSUPP;
6547
6548 wdev_lock(wdev);
6549 /* If not connected, get default parameters */
6550 if (!wdev->mesh_id_len)
6551 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6552 else
6553 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6554 wdev_unlock(wdev);
6555
6556 if (err)
6557 return err;
6558
6559 /* Draw up a netlink message to send back */
6560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6561 if (!msg)
6562 return -ENOMEM;
6563 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6564 NL80211_CMD_GET_MESH_CONFIG);
6565 if (!hdr)
6566 goto out;
6567 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6568 if (!pinfoattr)
6569 goto nla_put_failure;
6570 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6571 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6572 cur_params.dot11MeshRetryTimeout) ||
6573 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6574 cur_params.dot11MeshConfirmTimeout) ||
6575 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6576 cur_params.dot11MeshHoldingTimeout) ||
6577 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6578 cur_params.dot11MeshMaxPeerLinks) ||
6579 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6580 cur_params.dot11MeshMaxRetries) ||
6581 nla_put_u8(msg, NL80211_MESHCONF_TTL,
6582 cur_params.dot11MeshTTL) ||
6583 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6584 cur_params.element_ttl) ||
6585 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6586 cur_params.auto_open_plinks) ||
6587 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6588 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6589 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6590 cur_params.dot11MeshHWMPmaxPREQretries) ||
6591 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6592 cur_params.path_refresh_time) ||
6593 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6594 cur_params.min_discovery_timeout) ||
6595 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6596 cur_params.dot11MeshHWMPactivePathTimeout) ||
6597 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6598 cur_params.dot11MeshHWMPpreqMinInterval) ||
6599 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6600 cur_params.dot11MeshHWMPperrMinInterval) ||
6601 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6602 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6603 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6604 cur_params.dot11MeshHWMPRootMode) ||
6605 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6606 cur_params.dot11MeshHWMPRannInterval) ||
6607 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6608 cur_params.dot11MeshGateAnnouncementProtocol) ||
6609 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6610 cur_params.dot11MeshForwarding) ||
6611 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6612 cur_params.rssi_threshold) ||
6613 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6614 cur_params.ht_opmode) ||
6615 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6616 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6617 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6618 cur_params.dot11MeshHWMProotInterval) ||
6619 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6620 cur_params.dot11MeshHWMPconfirmationInterval) ||
6621 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6622 cur_params.power_mode) ||
6623 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6624 cur_params.dot11MeshAwakeWindowDuration) ||
6625 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6626 cur_params.plink_timeout) ||
6627 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6628 cur_params.dot11MeshConnectedToMeshGate))
6629 goto nla_put_failure;
6630 nla_nest_end(msg, pinfoattr);
6631 genlmsg_end(msg, hdr);
6632 return genlmsg_reply(msg, info);
6633
6634 nla_put_failure:
6635 out:
6636 nlmsg_free(msg);
6637 return -ENOBUFS;
6638 }
6639
6640 static const struct nla_policy
6641 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6642 [NL80211_MESHCONF_RETRY_TIMEOUT] =
6643 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6644 [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6645 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6646 [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6647 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6648 [NL80211_MESHCONF_MAX_PEER_LINKS] =
6649 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6650 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6651 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6652 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6653 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6654 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6655 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6656 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6657 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6658 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6659 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6660 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6661 NLA_POLICY_MIN(NLA_U16, 1),
6662 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6663 NLA_POLICY_MIN(NLA_U16, 1),
6664 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6665 NLA_POLICY_MIN(NLA_U16, 1),
6666 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6667 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6668 NLA_POLICY_MIN(NLA_U16, 1),
6669 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6670 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6671 [NL80211_MESHCONF_RSSI_THRESHOLD] =
6672 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6673 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6674 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6675 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6676 NLA_POLICY_MIN(NLA_U16, 1),
6677 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6678 NLA_POLICY_MIN(NLA_U16, 1),
6679 [NL80211_MESHCONF_POWER_MODE] =
6680 NLA_POLICY_RANGE(NLA_U32,
6681 NL80211_MESH_POWER_ACTIVE,
6682 NL80211_MESH_POWER_MAX),
6683 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6684 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6685 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6686 };
6687
6688 static const struct nla_policy
6689 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6690 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6691 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6692 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6693 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6694 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6695 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6696 [NL80211_MESH_SETUP_IE] =
6697 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6698 IEEE80211_MAX_DATA_LEN),
6699 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6700 };
6701
nl80211_parse_mesh_config(struct genl_info * info,struct mesh_config * cfg,u32 * mask_out)6702 static int nl80211_parse_mesh_config(struct genl_info *info,
6703 struct mesh_config *cfg,
6704 u32 *mask_out)
6705 {
6706 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6707 u32 mask = 0;
6708 u16 ht_opmode;
6709
6710 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \
6711 do { \
6712 if (tb[attr]) { \
6713 cfg->param = fn(tb[attr]); \
6714 mask |= BIT((attr) - 1); \
6715 } \
6716 } while (0)
6717
6718 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6719 return -EINVAL;
6720 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6721 return -EINVAL;
6722
6723 /* This makes sure that there aren't more than 32 mesh config
6724 * parameters (otherwise our bitfield scheme would not work.) */
6725 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6726
6727 /* Fill in the params struct */
6728 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6729 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6730 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6731 NL80211_MESHCONF_CONFIRM_TIMEOUT,
6732 nla_get_u16);
6733 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6734 NL80211_MESHCONF_HOLDING_TIMEOUT,
6735 nla_get_u16);
6736 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6737 NL80211_MESHCONF_MAX_PEER_LINKS,
6738 nla_get_u16);
6739 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6740 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6741 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6742 NL80211_MESHCONF_TTL, nla_get_u8);
6743 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6744 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6745 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6746 NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6747 nla_get_u8);
6748 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6749 mask,
6750 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6751 nla_get_u32);
6752 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6753 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6754 nla_get_u8);
6755 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6756 NL80211_MESHCONF_PATH_REFRESH_TIME,
6757 nla_get_u32);
6758 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6759 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6760 return -EINVAL;
6761 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6762 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6763 nla_get_u16);
6764 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6765 mask,
6766 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6767 nla_get_u32);
6768 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6769 (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6770 cfg->dot11MeshHWMPactivePathTimeout > 65535))
6771 return -EINVAL;
6772 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6773 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6774 nla_get_u16);
6775 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6776 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6777 nla_get_u16);
6778 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6779 dot11MeshHWMPnetDiameterTraversalTime, mask,
6780 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6781 nla_get_u16);
6782 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6783 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6784 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6785 NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6786 nla_get_u16);
6787 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6788 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6789 nla_get_u8);
6790 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6791 NL80211_MESHCONF_FORWARDING, nla_get_u8);
6792 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6793 NL80211_MESHCONF_RSSI_THRESHOLD,
6794 nla_get_s32);
6795 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6796 NL80211_MESHCONF_CONNECTED_TO_GATE,
6797 nla_get_u8);
6798 /*
6799 * Check HT operation mode based on
6800 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6801 */
6802 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6803 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6804
6805 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6806 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6807 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6808 return -EINVAL;
6809
6810 /* NON_HT_STA bit is reserved, but some programs set it */
6811 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6812
6813 cfg->ht_opmode = ht_opmode;
6814 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6815 }
6816 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6817 dot11MeshHWMPactivePathToRootTimeout, mask,
6818 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6819 nla_get_u32);
6820 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6821 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6822 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6823 return -EINVAL;
6824 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6825 NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6826 nla_get_u16);
6827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6828 mask,
6829 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6830 nla_get_u16);
6831 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6832 NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6834 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6835 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6836 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6837 if (mask_out)
6838 *mask_out = mask;
6839
6840 return 0;
6841
6842 #undef FILL_IN_MESH_PARAM_IF_SET
6843 }
6844
nl80211_parse_mesh_setup(struct genl_info * info,struct mesh_setup * setup)6845 static int nl80211_parse_mesh_setup(struct genl_info *info,
6846 struct mesh_setup *setup)
6847 {
6848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6849 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6850
6851 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6852 return -EINVAL;
6853 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6854 return -EINVAL;
6855
6856 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6857 setup->sync_method =
6858 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6859 IEEE80211_SYNC_METHOD_VENDOR :
6860 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6861
6862 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6863 setup->path_sel_proto =
6864 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6865 IEEE80211_PATH_PROTOCOL_VENDOR :
6866 IEEE80211_PATH_PROTOCOL_HWMP;
6867
6868 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6869 setup->path_metric =
6870 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6871 IEEE80211_PATH_METRIC_VENDOR :
6872 IEEE80211_PATH_METRIC_AIRTIME;
6873
6874 if (tb[NL80211_MESH_SETUP_IE]) {
6875 struct nlattr *ieattr =
6876 tb[NL80211_MESH_SETUP_IE];
6877 setup->ie = nla_data(ieattr);
6878 setup->ie_len = nla_len(ieattr);
6879 }
6880 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6881 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6882 return -EINVAL;
6883 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6884 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6885 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6886 if (setup->is_secure)
6887 setup->user_mpm = true;
6888
6889 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6890 if (!setup->user_mpm)
6891 return -EINVAL;
6892 setup->auth_id =
6893 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6894 }
6895
6896 return 0;
6897 }
6898
nl80211_update_mesh_config(struct sk_buff * skb,struct genl_info * info)6899 static int nl80211_update_mesh_config(struct sk_buff *skb,
6900 struct genl_info *info)
6901 {
6902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6903 struct net_device *dev = info->user_ptr[1];
6904 struct wireless_dev *wdev = dev->ieee80211_ptr;
6905 struct mesh_config cfg;
6906 u32 mask;
6907 int err;
6908
6909 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6910 return -EOPNOTSUPP;
6911
6912 if (!rdev->ops->update_mesh_config)
6913 return -EOPNOTSUPP;
6914
6915 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6916 if (err)
6917 return err;
6918
6919 wdev_lock(wdev);
6920 if (!wdev->mesh_id_len)
6921 err = -ENOLINK;
6922
6923 if (!err)
6924 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6925
6926 wdev_unlock(wdev);
6927
6928 return err;
6929 }
6930
nl80211_put_regdom(const struct ieee80211_regdomain * regdom,struct sk_buff * msg)6931 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6932 struct sk_buff *msg)
6933 {
6934 struct nlattr *nl_reg_rules;
6935 unsigned int i;
6936
6937 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6938 (regdom->dfs_region &&
6939 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6940 goto nla_put_failure;
6941
6942 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6943 if (!nl_reg_rules)
6944 goto nla_put_failure;
6945
6946 for (i = 0; i < regdom->n_reg_rules; i++) {
6947 struct nlattr *nl_reg_rule;
6948 const struct ieee80211_reg_rule *reg_rule;
6949 const struct ieee80211_freq_range *freq_range;
6950 const struct ieee80211_power_rule *power_rule;
6951 unsigned int max_bandwidth_khz;
6952
6953 reg_rule = ®dom->reg_rules[i];
6954 freq_range = ®_rule->freq_range;
6955 power_rule = ®_rule->power_rule;
6956
6957 nl_reg_rule = nla_nest_start_noflag(msg, i);
6958 if (!nl_reg_rule)
6959 goto nla_put_failure;
6960
6961 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6962 if (!max_bandwidth_khz)
6963 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6964 reg_rule);
6965
6966 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6967 reg_rule->flags) ||
6968 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6969 freq_range->start_freq_khz) ||
6970 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6971 freq_range->end_freq_khz) ||
6972 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6973 max_bandwidth_khz) ||
6974 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6975 power_rule->max_antenna_gain) ||
6976 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6977 power_rule->max_eirp) ||
6978 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6979 reg_rule->dfs_cac_ms))
6980 goto nla_put_failure;
6981
6982 nla_nest_end(msg, nl_reg_rule);
6983 }
6984
6985 nla_nest_end(msg, nl_reg_rules);
6986 return 0;
6987
6988 nla_put_failure:
6989 return -EMSGSIZE;
6990 }
6991
nl80211_get_reg_do(struct sk_buff * skb,struct genl_info * info)6992 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6993 {
6994 const struct ieee80211_regdomain *regdom = NULL;
6995 struct cfg80211_registered_device *rdev;
6996 struct wiphy *wiphy = NULL;
6997 struct sk_buff *msg;
6998 void *hdr;
6999
7000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7001 if (!msg)
7002 return -ENOBUFS;
7003
7004 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7005 NL80211_CMD_GET_REG);
7006 if (!hdr)
7007 goto put_failure;
7008
7009 if (info->attrs[NL80211_ATTR_WIPHY]) {
7010 bool self_managed;
7011
7012 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7013 if (IS_ERR(rdev)) {
7014 nlmsg_free(msg);
7015 return PTR_ERR(rdev);
7016 }
7017
7018 wiphy = &rdev->wiphy;
7019 self_managed = wiphy->regulatory_flags &
7020 REGULATORY_WIPHY_SELF_MANAGED;
7021 regdom = get_wiphy_regdom(wiphy);
7022
7023 /* a self-managed-reg device must have a private regdom */
7024 if (WARN_ON(!regdom && self_managed)) {
7025 nlmsg_free(msg);
7026 return -EINVAL;
7027 }
7028
7029 if (regdom &&
7030 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7031 goto nla_put_failure;
7032 }
7033
7034 if (!wiphy && reg_last_request_cell_base() &&
7035 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7036 NL80211_USER_REG_HINT_CELL_BASE))
7037 goto nla_put_failure;
7038
7039 rcu_read_lock();
7040
7041 if (!regdom)
7042 regdom = rcu_dereference(cfg80211_regdomain);
7043
7044 if (nl80211_put_regdom(regdom, msg))
7045 goto nla_put_failure_rcu;
7046
7047 rcu_read_unlock();
7048
7049 genlmsg_end(msg, hdr);
7050 return genlmsg_reply(msg, info);
7051
7052 nla_put_failure_rcu:
7053 rcu_read_unlock();
7054 nla_put_failure:
7055 put_failure:
7056 nlmsg_free(msg);
7057 return -EMSGSIZE;
7058 }
7059
nl80211_send_regdom(struct sk_buff * msg,struct netlink_callback * cb,u32 seq,int flags,struct wiphy * wiphy,const struct ieee80211_regdomain * regdom)7060 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7061 u32 seq, int flags, struct wiphy *wiphy,
7062 const struct ieee80211_regdomain *regdom)
7063 {
7064 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7065 NL80211_CMD_GET_REG);
7066
7067 if (!hdr)
7068 return -1;
7069
7070 genl_dump_check_consistent(cb, hdr);
7071
7072 if (nl80211_put_regdom(regdom, msg))
7073 goto nla_put_failure;
7074
7075 if (!wiphy && reg_last_request_cell_base() &&
7076 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7077 NL80211_USER_REG_HINT_CELL_BASE))
7078 goto nla_put_failure;
7079
7080 if (wiphy &&
7081 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7082 goto nla_put_failure;
7083
7084 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7085 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7086 goto nla_put_failure;
7087
7088 genlmsg_end(msg, hdr);
7089 return 0;
7090
7091 nla_put_failure:
7092 genlmsg_cancel(msg, hdr);
7093 return -EMSGSIZE;
7094 }
7095
nl80211_get_reg_dump(struct sk_buff * skb,struct netlink_callback * cb)7096 static int nl80211_get_reg_dump(struct sk_buff *skb,
7097 struct netlink_callback *cb)
7098 {
7099 const struct ieee80211_regdomain *regdom = NULL;
7100 struct cfg80211_registered_device *rdev;
7101 int err, reg_idx, start = cb->args[2];
7102
7103 rtnl_lock();
7104
7105 if (cfg80211_regdomain && start == 0) {
7106 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7107 NLM_F_MULTI, NULL,
7108 rtnl_dereference(cfg80211_regdomain));
7109 if (err < 0)
7110 goto out_err;
7111 }
7112
7113 /* the global regdom is idx 0 */
7114 reg_idx = 1;
7115 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7116 regdom = get_wiphy_regdom(&rdev->wiphy);
7117 if (!regdom)
7118 continue;
7119
7120 if (++reg_idx <= start)
7121 continue;
7122
7123 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7124 NLM_F_MULTI, &rdev->wiphy, regdom);
7125 if (err < 0) {
7126 reg_idx--;
7127 break;
7128 }
7129 }
7130
7131 cb->args[2] = reg_idx;
7132 err = skb->len;
7133 out_err:
7134 rtnl_unlock();
7135 return err;
7136 }
7137
7138 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7139 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7140 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
7141 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
7142 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
7143 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
7144 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
7145 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
7146 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
7147 };
7148
parse_reg_rule(struct nlattr * tb[],struct ieee80211_reg_rule * reg_rule)7149 static int parse_reg_rule(struct nlattr *tb[],
7150 struct ieee80211_reg_rule *reg_rule)
7151 {
7152 struct ieee80211_freq_range *freq_range = ®_rule->freq_range;
7153 struct ieee80211_power_rule *power_rule = ®_rule->power_rule;
7154
7155 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7156 return -EINVAL;
7157 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7158 return -EINVAL;
7159 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7160 return -EINVAL;
7161 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7162 return -EINVAL;
7163 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7164 return -EINVAL;
7165
7166 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7167
7168 freq_range->start_freq_khz =
7169 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7170 freq_range->end_freq_khz =
7171 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7172 freq_range->max_bandwidth_khz =
7173 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7174
7175 power_rule->max_eirp =
7176 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7177
7178 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7179 power_rule->max_antenna_gain =
7180 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7181
7182 if (tb[NL80211_ATTR_DFS_CAC_TIME])
7183 reg_rule->dfs_cac_ms =
7184 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7185
7186 return 0;
7187 }
7188
nl80211_set_reg(struct sk_buff * skb,struct genl_info * info)7189 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7190 {
7191 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7192 struct nlattr *nl_reg_rule;
7193 char *alpha2;
7194 int rem_reg_rules, r;
7195 u32 num_rules = 0, rule_idx = 0;
7196 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7197 struct ieee80211_regdomain *rd;
7198
7199 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7200 return -EINVAL;
7201
7202 if (!info->attrs[NL80211_ATTR_REG_RULES])
7203 return -EINVAL;
7204
7205 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7206
7207 if (info->attrs[NL80211_ATTR_DFS_REGION])
7208 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7209
7210 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7211 rem_reg_rules) {
7212 num_rules++;
7213 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7214 return -EINVAL;
7215 }
7216
7217 if (!reg_is_valid_request(alpha2))
7218 return -EINVAL;
7219
7220 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7221 if (!rd)
7222 return -ENOMEM;
7223
7224 rd->n_reg_rules = num_rules;
7225 rd->alpha2[0] = alpha2[0];
7226 rd->alpha2[1] = alpha2[1];
7227
7228 /*
7229 * Disable DFS master mode if the DFS region was
7230 * not supported or known on this kernel.
7231 */
7232 if (reg_supported_dfs_region(dfs_region))
7233 rd->dfs_region = dfs_region;
7234
7235 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7236 rem_reg_rules) {
7237 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7238 nl_reg_rule, reg_rule_policy,
7239 info->extack);
7240 if (r)
7241 goto bad_reg;
7242 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7243 if (r)
7244 goto bad_reg;
7245
7246 rule_idx++;
7247
7248 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7249 r = -EINVAL;
7250 goto bad_reg;
7251 }
7252 }
7253
7254 /* set_regdom takes ownership of rd */
7255 return set_regdom(rd, REGD_SOURCE_CRDA);
7256 bad_reg:
7257 kfree(rd);
7258 return r;
7259 }
7260 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7261
validate_scan_freqs(struct nlattr * freqs)7262 static int validate_scan_freqs(struct nlattr *freqs)
7263 {
7264 struct nlattr *attr1, *attr2;
7265 int n_channels = 0, tmp1, tmp2;
7266
7267 nla_for_each_nested(attr1, freqs, tmp1)
7268 if (nla_len(attr1) != sizeof(u32))
7269 return 0;
7270
7271 nla_for_each_nested(attr1, freqs, tmp1) {
7272 n_channels++;
7273 /*
7274 * Some hardware has a limited channel list for
7275 * scanning, and it is pretty much nonsensical
7276 * to scan for a channel twice, so disallow that
7277 * and don't require drivers to check that the
7278 * channel list they get isn't longer than what
7279 * they can scan, as long as they can scan all
7280 * the channels they registered at once.
7281 */
7282 nla_for_each_nested(attr2, freqs, tmp2)
7283 if (attr1 != attr2 &&
7284 nla_get_u32(attr1) == nla_get_u32(attr2))
7285 return 0;
7286 }
7287
7288 return n_channels;
7289 }
7290
is_band_valid(struct wiphy * wiphy,enum nl80211_band b)7291 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7292 {
7293 return b < NUM_NL80211_BANDS && wiphy->bands[b];
7294 }
7295
parse_bss_select(struct nlattr * nla,struct wiphy * wiphy,struct cfg80211_bss_selection * bss_select)7296 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7297 struct cfg80211_bss_selection *bss_select)
7298 {
7299 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7300 struct nlattr *nest;
7301 int err;
7302 bool found = false;
7303 int i;
7304
7305 /* only process one nested attribute */
7306 nest = nla_data(nla);
7307 if (!nla_ok(nest, nla_len(nest)))
7308 return -EINVAL;
7309
7310 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7311 nest, nl80211_bss_select_policy,
7312 NULL);
7313 if (err)
7314 return err;
7315
7316 /* only one attribute may be given */
7317 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7318 if (attr[i]) {
7319 if (found)
7320 return -EINVAL;
7321 found = true;
7322 }
7323 }
7324
7325 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7326
7327 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7328 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7329
7330 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7331 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7332 bss_select->param.band_pref =
7333 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7334 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7335 return -EINVAL;
7336 }
7337
7338 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7339 struct nl80211_bss_select_rssi_adjust *adj_param;
7340
7341 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7342 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7343 bss_select->param.adjust.band = adj_param->band;
7344 bss_select->param.adjust.delta = adj_param->delta;
7345 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7346 return -EINVAL;
7347 }
7348
7349 /* user-space did not provide behaviour attribute */
7350 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7351 return -EINVAL;
7352
7353 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7354 return -EINVAL;
7355
7356 return 0;
7357 }
7358
nl80211_parse_random_mac(struct nlattr ** attrs,u8 * mac_addr,u8 * mac_addr_mask)7359 int nl80211_parse_random_mac(struct nlattr **attrs,
7360 u8 *mac_addr, u8 *mac_addr_mask)
7361 {
7362 int i;
7363
7364 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7365 eth_zero_addr(mac_addr);
7366 eth_zero_addr(mac_addr_mask);
7367 mac_addr[0] = 0x2;
7368 mac_addr_mask[0] = 0x3;
7369
7370 return 0;
7371 }
7372
7373 /* need both or none */
7374 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7375 return -EINVAL;
7376
7377 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7378 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7379
7380 /* don't allow or configure an mcast address */
7381 if (!is_multicast_ether_addr(mac_addr_mask) ||
7382 is_multicast_ether_addr(mac_addr))
7383 return -EINVAL;
7384
7385 /*
7386 * allow users to pass a MAC address that has bits set outside
7387 * of the mask, but don't bother drivers with having to deal
7388 * with such bits
7389 */
7390 for (i = 0; i < ETH_ALEN; i++)
7391 mac_addr[i] &= mac_addr_mask[i];
7392
7393 return 0;
7394 }
7395
cfg80211_off_channel_oper_allowed(struct wireless_dev * wdev)7396 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7397 {
7398 ASSERT_WDEV_LOCK(wdev);
7399
7400 if (!cfg80211_beaconing_iface_active(wdev))
7401 return true;
7402
7403 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7404 return true;
7405
7406 return regulatory_pre_cac_allowed(wdev->wiphy);
7407 }
7408
nl80211_check_scan_feat(struct wiphy * wiphy,u32 flags,u32 flag,enum nl80211_ext_feature_index feat)7409 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7410 enum nl80211_ext_feature_index feat)
7411 {
7412 if (!(flags & flag))
7413 return true;
7414 if (wiphy_ext_feature_isset(wiphy, feat))
7415 return true;
7416 return false;
7417 }
7418
7419 static int
nl80211_check_scan_flags(struct wiphy * wiphy,struct wireless_dev * wdev,void * request,struct nlattr ** attrs,bool is_sched_scan)7420 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7421 void *request, struct nlattr **attrs,
7422 bool is_sched_scan)
7423 {
7424 u8 *mac_addr, *mac_addr_mask;
7425 u32 *flags;
7426 enum nl80211_feature_flags randomness_flag;
7427
7428 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7429 return 0;
7430
7431 if (is_sched_scan) {
7432 struct cfg80211_sched_scan_request *req = request;
7433
7434 randomness_flag = wdev ?
7435 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7436 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7437 flags = &req->flags;
7438 mac_addr = req->mac_addr;
7439 mac_addr_mask = req->mac_addr_mask;
7440 } else {
7441 struct cfg80211_scan_request *req = request;
7442
7443 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7444 flags = &req->flags;
7445 mac_addr = req->mac_addr;
7446 mac_addr_mask = req->mac_addr_mask;
7447 }
7448
7449 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7450
7451 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7452 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7453 !nl80211_check_scan_feat(wiphy, *flags,
7454 NL80211_SCAN_FLAG_LOW_SPAN,
7455 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7456 !nl80211_check_scan_feat(wiphy, *flags,
7457 NL80211_SCAN_FLAG_LOW_POWER,
7458 NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7459 !nl80211_check_scan_feat(wiphy, *flags,
7460 NL80211_SCAN_FLAG_HIGH_ACCURACY,
7461 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7462 !nl80211_check_scan_feat(wiphy, *flags,
7463 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7464 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7465 !nl80211_check_scan_feat(wiphy, *flags,
7466 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7467 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7468 !nl80211_check_scan_feat(wiphy, *flags,
7469 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7470 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7471 !nl80211_check_scan_feat(wiphy, *flags,
7472 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7473 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7474 !nl80211_check_scan_feat(wiphy, *flags,
7475 NL80211_SCAN_FLAG_RANDOM_SN,
7476 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7477 !nl80211_check_scan_feat(wiphy, *flags,
7478 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7479 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7480 return -EOPNOTSUPP;
7481
7482 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7483 int err;
7484
7485 if (!(wiphy->features & randomness_flag) ||
7486 (wdev && wdev->current_bss))
7487 return -EOPNOTSUPP;
7488
7489 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7490 if (err)
7491 return err;
7492 }
7493
7494 return 0;
7495 }
7496
nl80211_trigger_scan(struct sk_buff * skb,struct genl_info * info)7497 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7498 {
7499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7500 struct wireless_dev *wdev = info->user_ptr[1];
7501 struct cfg80211_scan_request *request;
7502 struct nlattr *attr;
7503 struct wiphy *wiphy;
7504 int err, tmp, n_ssids = 0, n_channels, i;
7505 size_t ie_len;
7506
7507 wiphy = &rdev->wiphy;
7508
7509 if (wdev->iftype == NL80211_IFTYPE_NAN)
7510 return -EOPNOTSUPP;
7511
7512 if (!rdev->ops->scan)
7513 return -EOPNOTSUPP;
7514
7515 if (rdev->scan_req || rdev->scan_msg) {
7516 err = -EBUSY;
7517 goto unlock;
7518 }
7519
7520 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7521 n_channels = validate_scan_freqs(
7522 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7523 if (!n_channels) {
7524 err = -EINVAL;
7525 goto unlock;
7526 }
7527 } else {
7528 n_channels = ieee80211_get_num_supported_channels(wiphy);
7529 }
7530
7531 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7532 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7533 n_ssids++;
7534
7535 if (n_ssids > wiphy->max_scan_ssids) {
7536 err = -EINVAL;
7537 goto unlock;
7538 }
7539
7540 if (info->attrs[NL80211_ATTR_IE])
7541 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7542 else
7543 ie_len = 0;
7544
7545 if (ie_len > wiphy->max_scan_ie_len) {
7546 err = -EINVAL;
7547 goto unlock;
7548 }
7549
7550 request = kzalloc(sizeof(*request)
7551 + sizeof(*request->ssids) * n_ssids
7552 + sizeof(*request->channels) * n_channels
7553 + ie_len, GFP_KERNEL);
7554 if (!request) {
7555 err = -ENOMEM;
7556 goto unlock;
7557 }
7558
7559 if (n_ssids)
7560 request->ssids = (void *)&request->channels[n_channels];
7561 request->n_ssids = n_ssids;
7562 if (ie_len) {
7563 if (n_ssids)
7564 request->ie = (void *)(request->ssids + n_ssids);
7565 else
7566 request->ie = (void *)(request->channels + n_channels);
7567 }
7568
7569 i = 0;
7570 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7571 /* user specified, bail out if channel not found */
7572 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7573 struct ieee80211_channel *chan;
7574
7575 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7576
7577 if (!chan) {
7578 err = -EINVAL;
7579 goto out_free;
7580 }
7581
7582 /* ignore disabled channels */
7583 if (chan->flags & IEEE80211_CHAN_DISABLED)
7584 continue;
7585
7586 request->channels[i] = chan;
7587 i++;
7588 }
7589 } else {
7590 enum nl80211_band band;
7591
7592 /* all channels */
7593 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7594 int j;
7595
7596 if (!wiphy->bands[band])
7597 continue;
7598 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7599 struct ieee80211_channel *chan;
7600
7601 chan = &wiphy->bands[band]->channels[j];
7602
7603 if (chan->flags & IEEE80211_CHAN_DISABLED)
7604 continue;
7605
7606 request->channels[i] = chan;
7607 i++;
7608 }
7609 }
7610 }
7611
7612 if (!i) {
7613 err = -EINVAL;
7614 goto out_free;
7615 }
7616
7617 request->n_channels = i;
7618
7619 wdev_lock(wdev);
7620 if (!cfg80211_off_channel_oper_allowed(wdev)) {
7621 struct ieee80211_channel *chan;
7622
7623 if (request->n_channels != 1) {
7624 wdev_unlock(wdev);
7625 err = -EBUSY;
7626 goto out_free;
7627 }
7628
7629 chan = request->channels[0];
7630 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7631 wdev_unlock(wdev);
7632 err = -EBUSY;
7633 goto out_free;
7634 }
7635 }
7636 wdev_unlock(wdev);
7637
7638 i = 0;
7639 if (n_ssids) {
7640 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7641 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7642 err = -EINVAL;
7643 goto out_free;
7644 }
7645 request->ssids[i].ssid_len = nla_len(attr);
7646 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7647 i++;
7648 }
7649 }
7650
7651 if (info->attrs[NL80211_ATTR_IE]) {
7652 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7653 memcpy((void *)request->ie,
7654 nla_data(info->attrs[NL80211_ATTR_IE]),
7655 request->ie_len);
7656 }
7657
7658 for (i = 0; i < NUM_NL80211_BANDS; i++)
7659 if (wiphy->bands[i])
7660 request->rates[i] =
7661 (1 << wiphy->bands[i]->n_bitrates) - 1;
7662
7663 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7664 nla_for_each_nested(attr,
7665 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7666 tmp) {
7667 enum nl80211_band band = nla_type(attr);
7668
7669 if (band < 0 || band >= NUM_NL80211_BANDS) {
7670 err = -EINVAL;
7671 goto out_free;
7672 }
7673
7674 if (!wiphy->bands[band])
7675 continue;
7676
7677 err = ieee80211_get_ratemask(wiphy->bands[band],
7678 nla_data(attr),
7679 nla_len(attr),
7680 &request->rates[band]);
7681 if (err)
7682 goto out_free;
7683 }
7684 }
7685
7686 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7687 if (!wiphy_ext_feature_isset(wiphy,
7688 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7689 err = -EOPNOTSUPP;
7690 goto out_free;
7691 }
7692
7693 request->duration =
7694 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7695 request->duration_mandatory =
7696 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7697 }
7698
7699 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7700 false);
7701 if (err)
7702 goto out_free;
7703
7704 request->no_cck =
7705 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7706
7707 /* Initial implementation used NL80211_ATTR_MAC to set the specific
7708 * BSSID to scan for. This was problematic because that same attribute
7709 * was already used for another purpose (local random MAC address). The
7710 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7711 * compatibility with older userspace components, also use the
7712 * NL80211_ATTR_MAC value here if it can be determined to be used for
7713 * the specific BSSID use case instead of the random MAC address
7714 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7715 */
7716 if (info->attrs[NL80211_ATTR_BSSID])
7717 memcpy(request->bssid,
7718 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7719 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7720 info->attrs[NL80211_ATTR_MAC])
7721 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7722 ETH_ALEN);
7723 else
7724 eth_broadcast_addr(request->bssid);
7725
7726 request->wdev = wdev;
7727 request->wiphy = &rdev->wiphy;
7728 request->scan_start = jiffies;
7729
7730 rdev->scan_req = request;
7731 err = rdev_scan(rdev, request);
7732
7733 if (!err) {
7734 nl80211_send_scan_start(rdev, wdev);
7735 if (wdev->netdev)
7736 dev_hold(wdev->netdev);
7737 } else {
7738 out_free:
7739 rdev->scan_req = NULL;
7740 kfree(request);
7741 }
7742
7743 unlock:
7744 return err;
7745 }
7746
nl80211_abort_scan(struct sk_buff * skb,struct genl_info * info)7747 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7748 {
7749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7750 struct wireless_dev *wdev = info->user_ptr[1];
7751
7752 if (!rdev->ops->abort_scan)
7753 return -EOPNOTSUPP;
7754
7755 if (rdev->scan_msg)
7756 return 0;
7757
7758 if (!rdev->scan_req)
7759 return -ENOENT;
7760
7761 rdev_abort_scan(rdev, wdev);
7762 return 0;
7763 }
7764
7765 static int
nl80211_parse_sched_scan_plans(struct wiphy * wiphy,int n_plans,struct cfg80211_sched_scan_request * request,struct nlattr ** attrs)7766 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7767 struct cfg80211_sched_scan_request *request,
7768 struct nlattr **attrs)
7769 {
7770 int tmp, err, i = 0;
7771 struct nlattr *attr;
7772
7773 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7774 u32 interval;
7775
7776 /*
7777 * If scan plans are not specified,
7778 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7779 * case one scan plan will be set with the specified scan
7780 * interval and infinite number of iterations.
7781 */
7782 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7783 if (!interval)
7784 return -EINVAL;
7785
7786 request->scan_plans[0].interval =
7787 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7788 if (!request->scan_plans[0].interval)
7789 return -EINVAL;
7790
7791 if (request->scan_plans[0].interval >
7792 wiphy->max_sched_scan_plan_interval)
7793 request->scan_plans[0].interval =
7794 wiphy->max_sched_scan_plan_interval;
7795
7796 return 0;
7797 }
7798
7799 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7800 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7801
7802 if (WARN_ON(i >= n_plans))
7803 return -EINVAL;
7804
7805 err = nla_parse_nested_deprecated(plan,
7806 NL80211_SCHED_SCAN_PLAN_MAX,
7807 attr, nl80211_plan_policy,
7808 NULL);
7809 if (err)
7810 return err;
7811
7812 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7813 return -EINVAL;
7814
7815 request->scan_plans[i].interval =
7816 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7817 if (!request->scan_plans[i].interval ||
7818 request->scan_plans[i].interval >
7819 wiphy->max_sched_scan_plan_interval)
7820 return -EINVAL;
7821
7822 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7823 request->scan_plans[i].iterations =
7824 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7825 if (!request->scan_plans[i].iterations ||
7826 (request->scan_plans[i].iterations >
7827 wiphy->max_sched_scan_plan_iterations))
7828 return -EINVAL;
7829 } else if (i < n_plans - 1) {
7830 /*
7831 * All scan plans but the last one must specify
7832 * a finite number of iterations
7833 */
7834 return -EINVAL;
7835 }
7836
7837 i++;
7838 }
7839
7840 /*
7841 * The last scan plan must not specify the number of
7842 * iterations, it is supposed to run infinitely
7843 */
7844 if (request->scan_plans[n_plans - 1].iterations)
7845 return -EINVAL;
7846
7847 return 0;
7848 }
7849
7850 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)7851 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7852 struct cfg80211_match_set *match_sets,
7853 struct nlattr *tb_band_rssi,
7854 s32 rssi_thold)
7855 {
7856 struct nlattr *attr;
7857 int i, tmp, ret = 0;
7858
7859 if (!wiphy_ext_feature_isset(wiphy,
7860 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7861 if (tb_band_rssi)
7862 ret = -EOPNOTSUPP;
7863 else
7864 for (i = 0; i < NUM_NL80211_BANDS; i++)
7865 match_sets->per_band_rssi_thold[i] =
7866 NL80211_SCAN_RSSI_THOLD_OFF;
7867 return ret;
7868 }
7869
7870 for (i = 0; i < NUM_NL80211_BANDS; i++)
7871 match_sets->per_band_rssi_thold[i] = rssi_thold;
7872
7873 nla_for_each_nested(attr, tb_band_rssi, tmp) {
7874 enum nl80211_band band = nla_type(attr);
7875
7876 if (band < 0 || band >= NUM_NL80211_BANDS)
7877 return -EINVAL;
7878
7879 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7880 }
7881
7882 return 0;
7883 }
7884
7885 static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy * wiphy,struct wireless_dev * wdev,struct nlattr ** attrs,int max_match_sets)7886 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7887 struct nlattr **attrs, int max_match_sets)
7888 {
7889 struct cfg80211_sched_scan_request *request;
7890 struct nlattr *attr;
7891 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7892 enum nl80211_band band;
7893 size_t ie_len;
7894 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7895 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7896
7897 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7898 n_channels = validate_scan_freqs(
7899 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7900 if (!n_channels)
7901 return ERR_PTR(-EINVAL);
7902 } else {
7903 n_channels = ieee80211_get_num_supported_channels(wiphy);
7904 }
7905
7906 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7907 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7908 tmp)
7909 n_ssids++;
7910
7911 if (n_ssids > wiphy->max_sched_scan_ssids)
7912 return ERR_PTR(-EINVAL);
7913
7914 /*
7915 * First, count the number of 'real' matchsets. Due to an issue with
7916 * the old implementation, matchsets containing only the RSSI attribute
7917 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7918 * RSSI for all matchsets, rather than their own matchset for reporting
7919 * all APs with a strong RSSI. This is needed to be compatible with
7920 * older userspace that treated a matchset with only the RSSI as the
7921 * global RSSI for all other matchsets - if there are other matchsets.
7922 */
7923 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7924 nla_for_each_nested(attr,
7925 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7926 tmp) {
7927 struct nlattr *rssi;
7928
7929 err = nla_parse_nested_deprecated(tb,
7930 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7931 attr,
7932 nl80211_match_policy,
7933 NULL);
7934 if (err)
7935 return ERR_PTR(err);
7936
7937 /* SSID and BSSID are mutually exclusive */
7938 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7939 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7940 return ERR_PTR(-EINVAL);
7941
7942 /* add other standalone attributes here */
7943 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7944 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7945 n_match_sets++;
7946 continue;
7947 }
7948 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7949 if (rssi)
7950 default_match_rssi = nla_get_s32(rssi);
7951 }
7952 }
7953
7954 /* However, if there's no other matchset, add the RSSI one */
7955 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7956 n_match_sets = 1;
7957
7958 if (n_match_sets > max_match_sets)
7959 return ERR_PTR(-EINVAL);
7960
7961 if (attrs[NL80211_ATTR_IE])
7962 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7963 else
7964 ie_len = 0;
7965
7966 if (ie_len > wiphy->max_sched_scan_ie_len)
7967 return ERR_PTR(-EINVAL);
7968
7969 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7970 /*
7971 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7972 * each scan plan already specifies its own interval
7973 */
7974 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7975 return ERR_PTR(-EINVAL);
7976
7977 nla_for_each_nested(attr,
7978 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7979 n_plans++;
7980 } else {
7981 /*
7982 * The scan interval attribute is kept for backward
7983 * compatibility. If no scan plans are specified and sched scan
7984 * interval is specified, one scan plan will be set with this
7985 * scan interval and infinite number of iterations.
7986 */
7987 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7988 return ERR_PTR(-EINVAL);
7989
7990 n_plans = 1;
7991 }
7992
7993 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7994 return ERR_PTR(-EINVAL);
7995
7996 if (!wiphy_ext_feature_isset(
7997 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7998 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7999 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8000 return ERR_PTR(-EINVAL);
8001
8002 request = kzalloc(sizeof(*request)
8003 + sizeof(*request->ssids) * n_ssids
8004 + sizeof(*request->match_sets) * n_match_sets
8005 + sizeof(*request->scan_plans) * n_plans
8006 + sizeof(*request->channels) * n_channels
8007 + ie_len, GFP_KERNEL);
8008 if (!request)
8009 return ERR_PTR(-ENOMEM);
8010
8011 if (n_ssids)
8012 request->ssids = (void *)&request->channels[n_channels];
8013 request->n_ssids = n_ssids;
8014 if (ie_len) {
8015 if (n_ssids)
8016 request->ie = (void *)(request->ssids + n_ssids);
8017 else
8018 request->ie = (void *)(request->channels + n_channels);
8019 }
8020
8021 if (n_match_sets) {
8022 if (request->ie)
8023 request->match_sets = (void *)(request->ie + ie_len);
8024 else if (n_ssids)
8025 request->match_sets =
8026 (void *)(request->ssids + n_ssids);
8027 else
8028 request->match_sets =
8029 (void *)(request->channels + n_channels);
8030 }
8031 request->n_match_sets = n_match_sets;
8032
8033 if (n_match_sets)
8034 request->scan_plans = (void *)(request->match_sets +
8035 n_match_sets);
8036 else if (request->ie)
8037 request->scan_plans = (void *)(request->ie + ie_len);
8038 else if (n_ssids)
8039 request->scan_plans = (void *)(request->ssids + n_ssids);
8040 else
8041 request->scan_plans = (void *)(request->channels + n_channels);
8042
8043 request->n_scan_plans = n_plans;
8044
8045 i = 0;
8046 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8047 /* user specified, bail out if channel not found */
8048 nla_for_each_nested(attr,
8049 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8050 tmp) {
8051 struct ieee80211_channel *chan;
8052
8053 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8054
8055 if (!chan) {
8056 err = -EINVAL;
8057 goto out_free;
8058 }
8059
8060 /* ignore disabled channels */
8061 if (chan->flags & IEEE80211_CHAN_DISABLED)
8062 continue;
8063
8064 request->channels[i] = chan;
8065 i++;
8066 }
8067 } else {
8068 /* all channels */
8069 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8070 int j;
8071
8072 if (!wiphy->bands[band])
8073 continue;
8074 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8075 struct ieee80211_channel *chan;
8076
8077 chan = &wiphy->bands[band]->channels[j];
8078
8079 if (chan->flags & IEEE80211_CHAN_DISABLED)
8080 continue;
8081
8082 request->channels[i] = chan;
8083 i++;
8084 }
8085 }
8086 }
8087
8088 if (!i) {
8089 err = -EINVAL;
8090 goto out_free;
8091 }
8092
8093 request->n_channels = i;
8094
8095 i = 0;
8096 if (n_ssids) {
8097 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8098 tmp) {
8099 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8100 err = -EINVAL;
8101 goto out_free;
8102 }
8103 request->ssids[i].ssid_len = nla_len(attr);
8104 memcpy(request->ssids[i].ssid, nla_data(attr),
8105 nla_len(attr));
8106 i++;
8107 }
8108 }
8109
8110 i = 0;
8111 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8112 nla_for_each_nested(attr,
8113 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8114 tmp) {
8115 struct nlattr *ssid, *bssid, *rssi;
8116
8117 err = nla_parse_nested_deprecated(tb,
8118 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8119 attr,
8120 nl80211_match_policy,
8121 NULL);
8122 if (err)
8123 goto out_free;
8124 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8125 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8126
8127 if (!ssid && !bssid) {
8128 i++;
8129 continue;
8130 }
8131
8132 if (WARN_ON(i >= n_match_sets)) {
8133 /* this indicates a programming error,
8134 * the loop above should have verified
8135 * things properly
8136 */
8137 err = -EINVAL;
8138 goto out_free;
8139 }
8140
8141 if (ssid) {
8142 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8143 err = -EINVAL;
8144 goto out_free;
8145 }
8146 memcpy(request->match_sets[i].ssid.ssid,
8147 nla_data(ssid), nla_len(ssid));
8148 request->match_sets[i].ssid.ssid_len =
8149 nla_len(ssid);
8150 }
8151 if (bssid) {
8152 if (nla_len(bssid) != ETH_ALEN) {
8153 err = -EINVAL;
8154 goto out_free;
8155 }
8156 memcpy(request->match_sets[i].bssid,
8157 nla_data(bssid), ETH_ALEN);
8158 }
8159
8160 /* special attribute - old implementation w/a */
8161 request->match_sets[i].rssi_thold = default_match_rssi;
8162 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8163 if (rssi)
8164 request->match_sets[i].rssi_thold =
8165 nla_get_s32(rssi);
8166
8167 /* Parse per band RSSI attribute */
8168 err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8169 &request->match_sets[i],
8170 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8171 request->match_sets[i].rssi_thold);
8172 if (err)
8173 goto out_free;
8174
8175 i++;
8176 }
8177
8178 /* there was no other matchset, so the RSSI one is alone */
8179 if (i == 0 && n_match_sets)
8180 request->match_sets[0].rssi_thold = default_match_rssi;
8181
8182 request->min_rssi_thold = INT_MAX;
8183 for (i = 0; i < n_match_sets; i++)
8184 request->min_rssi_thold =
8185 min(request->match_sets[i].rssi_thold,
8186 request->min_rssi_thold);
8187 } else {
8188 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8189 }
8190
8191 if (ie_len) {
8192 request->ie_len = ie_len;
8193 memcpy((void *)request->ie,
8194 nla_data(attrs[NL80211_ATTR_IE]),
8195 request->ie_len);
8196 }
8197
8198 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8199 if (err)
8200 goto out_free;
8201
8202 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8203 request->delay =
8204 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8205
8206 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8207 request->relative_rssi = nla_get_s8(
8208 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8209 request->relative_rssi_set = true;
8210 }
8211
8212 if (request->relative_rssi_set &&
8213 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8214 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8215
8216 rssi_adjust = nla_data(
8217 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8218 request->rssi_adjust.band = rssi_adjust->band;
8219 request->rssi_adjust.delta = rssi_adjust->delta;
8220 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8221 err = -EINVAL;
8222 goto out_free;
8223 }
8224 }
8225
8226 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8227 if (err)
8228 goto out_free;
8229
8230 request->scan_start = jiffies;
8231
8232 return request;
8233
8234 out_free:
8235 kfree(request);
8236 return ERR_PTR(err);
8237 }
8238
nl80211_start_sched_scan(struct sk_buff * skb,struct genl_info * info)8239 static int nl80211_start_sched_scan(struct sk_buff *skb,
8240 struct genl_info *info)
8241 {
8242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8243 struct net_device *dev = info->user_ptr[1];
8244 struct wireless_dev *wdev = dev->ieee80211_ptr;
8245 struct cfg80211_sched_scan_request *sched_scan_req;
8246 bool want_multi;
8247 int err;
8248
8249 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8250 return -EOPNOTSUPP;
8251
8252 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8253 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8254 if (err)
8255 return err;
8256
8257 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8258 info->attrs,
8259 rdev->wiphy.max_match_sets);
8260
8261 err = PTR_ERR_OR_ZERO(sched_scan_req);
8262 if (err)
8263 goto out_err;
8264
8265 /* leave request id zero for legacy request
8266 * or if driver does not support multi-scheduled scan
8267 */
8268 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
8269 while (!sched_scan_req->reqid)
8270 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8271 }
8272
8273 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8274 if (err)
8275 goto out_free;
8276
8277 sched_scan_req->dev = dev;
8278 sched_scan_req->wiphy = &rdev->wiphy;
8279
8280 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8281 sched_scan_req->owner_nlportid = info->snd_portid;
8282
8283 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8284
8285 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8286 return 0;
8287
8288 out_free:
8289 kfree(sched_scan_req);
8290 out_err:
8291 return err;
8292 }
8293
nl80211_stop_sched_scan(struct sk_buff * skb,struct genl_info * info)8294 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8295 struct genl_info *info)
8296 {
8297 struct cfg80211_sched_scan_request *req;
8298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8299 u64 cookie;
8300
8301 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8302 return -EOPNOTSUPP;
8303
8304 if (info->attrs[NL80211_ATTR_COOKIE]) {
8305 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8306 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8307 }
8308
8309 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8310 struct cfg80211_sched_scan_request,
8311 list);
8312 if (!req || req->reqid ||
8313 (req->owner_nlportid &&
8314 req->owner_nlportid != info->snd_portid))
8315 return -ENOENT;
8316
8317 return cfg80211_stop_sched_scan_req(rdev, req, false);
8318 }
8319
nl80211_start_radar_detection(struct sk_buff * skb,struct genl_info * info)8320 static int nl80211_start_radar_detection(struct sk_buff *skb,
8321 struct genl_info *info)
8322 {
8323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8324 struct net_device *dev = info->user_ptr[1];
8325 struct wireless_dev *wdev = dev->ieee80211_ptr;
8326 struct wiphy *wiphy = wdev->wiphy;
8327 struct cfg80211_chan_def chandef;
8328 enum nl80211_dfs_regions dfs_region;
8329 unsigned int cac_time_ms;
8330 int err;
8331
8332 dfs_region = reg_get_dfs_region(wiphy);
8333 if (dfs_region == NL80211_DFS_UNSET)
8334 return -EINVAL;
8335
8336 err = nl80211_parse_chandef(rdev, info, &chandef);
8337 if (err)
8338 return err;
8339
8340 if (netif_carrier_ok(dev))
8341 return -EBUSY;
8342
8343 if (wdev->cac_started)
8344 return -EBUSY;
8345
8346 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8347 if (err < 0)
8348 return err;
8349
8350 if (err == 0)
8351 return -EINVAL;
8352
8353 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8354 return -EINVAL;
8355
8356 /* CAC start is offloaded to HW and can't be started manually */
8357 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8358 return -EOPNOTSUPP;
8359
8360 if (!rdev->ops->start_radar_detection)
8361 return -EOPNOTSUPP;
8362
8363 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8364 if (WARN_ON(!cac_time_ms))
8365 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8366
8367 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8368 if (!err) {
8369 wdev->chandef = chandef;
8370 wdev->cac_started = true;
8371 wdev->cac_start_time = jiffies;
8372 wdev->cac_time_ms = cac_time_ms;
8373 }
8374 return err;
8375 }
8376
nl80211_notify_radar_detection(struct sk_buff * skb,struct genl_info * info)8377 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8378 struct genl_info *info)
8379 {
8380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8381 struct net_device *dev = info->user_ptr[1];
8382 struct wireless_dev *wdev = dev->ieee80211_ptr;
8383 struct wiphy *wiphy = wdev->wiphy;
8384 struct cfg80211_chan_def chandef;
8385 enum nl80211_dfs_regions dfs_region;
8386 int err;
8387
8388 dfs_region = reg_get_dfs_region(wiphy);
8389 if (dfs_region == NL80211_DFS_UNSET) {
8390 GENL_SET_ERR_MSG(info,
8391 "DFS Region is not set. Unexpected Radar indication");
8392 return -EINVAL;
8393 }
8394
8395 err = nl80211_parse_chandef(rdev, info, &chandef);
8396 if (err) {
8397 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8398 return err;
8399 }
8400
8401 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8402 if (err < 0) {
8403 GENL_SET_ERR_MSG(info, "chandef is invalid");
8404 return err;
8405 }
8406
8407 if (err == 0) {
8408 GENL_SET_ERR_MSG(info,
8409 "Unexpected Radar indication for chandef/iftype");
8410 return -EINVAL;
8411 }
8412
8413 /* Do not process this notification if radar is already detected
8414 * by kernel on this channel, and return success.
8415 */
8416 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8417 return 0;
8418
8419 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8420
8421 cfg80211_sched_dfs_chan_update(rdev);
8422
8423 rdev->radar_chandef = chandef;
8424
8425 /* Propagate this notification to other radios as well */
8426 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8427
8428 return 0;
8429 }
8430
nl80211_channel_switch(struct sk_buff * skb,struct genl_info * info)8431 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8432 {
8433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8434 struct net_device *dev = info->user_ptr[1];
8435 struct wireless_dev *wdev = dev->ieee80211_ptr;
8436 struct cfg80211_csa_settings params;
8437 /* csa_attrs is defined static to avoid waste of stack size - this
8438 * function is called under RTNL lock, so this should not be a problem.
8439 */
8440 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8441 int err;
8442 bool need_new_beacon = false;
8443 bool need_handle_dfs_flag = true;
8444 int len, i;
8445 u32 cs_count;
8446
8447 if (!rdev->ops->channel_switch ||
8448 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8449 return -EOPNOTSUPP;
8450
8451 switch (dev->ieee80211_ptr->iftype) {
8452 case NL80211_IFTYPE_AP:
8453 case NL80211_IFTYPE_P2P_GO:
8454 need_new_beacon = true;
8455 /* For all modes except AP the handle_dfs flag needs to be
8456 * supplied to tell the kernel that userspace will handle radar
8457 * events when they happen. Otherwise a switch to a channel
8458 * requiring DFS will be rejected.
8459 */
8460 need_handle_dfs_flag = false;
8461
8462 /* useless if AP is not running */
8463 if (!wdev->beacon_interval)
8464 return -ENOTCONN;
8465 break;
8466 case NL80211_IFTYPE_ADHOC:
8467 if (!wdev->ssid_len)
8468 return -ENOTCONN;
8469 break;
8470 case NL80211_IFTYPE_MESH_POINT:
8471 if (!wdev->mesh_id_len)
8472 return -ENOTCONN;
8473 break;
8474 default:
8475 return -EOPNOTSUPP;
8476 }
8477
8478 memset(¶ms, 0, sizeof(params));
8479 params.beacon_csa.ftm_responder = -1;
8480
8481 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8482 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8483 return -EINVAL;
8484
8485 /* only important for AP, IBSS and mesh create IEs internally */
8486 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8487 return -EINVAL;
8488
8489 /* Even though the attribute is u32, the specification says
8490 * u8, so let's make sure we don't overflow.
8491 */
8492 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8493 if (cs_count > 255)
8494 return -EINVAL;
8495
8496 params.count = cs_count;
8497
8498 if (!need_new_beacon)
8499 goto skip_beacons;
8500
8501 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after);
8502 if (err)
8503 return err;
8504
8505 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8506 info->attrs[NL80211_ATTR_CSA_IES],
8507 nl80211_policy, info->extack);
8508 if (err)
8509 return err;
8510
8511 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa);
8512 if (err)
8513 return err;
8514
8515 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8516 return -EINVAL;
8517
8518 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8519 if (!len || (len % sizeof(u16)))
8520 return -EINVAL;
8521
8522 params.n_counter_offsets_beacon = len / sizeof(u16);
8523 if (rdev->wiphy.max_num_csa_counters &&
8524 (params.n_counter_offsets_beacon >
8525 rdev->wiphy.max_num_csa_counters))
8526 return -EINVAL;
8527
8528 params.counter_offsets_beacon =
8529 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8530
8531 /* sanity checks - counters should fit and be the same */
8532 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8533 u16 offset = params.counter_offsets_beacon[i];
8534
8535 if (offset >= params.beacon_csa.tail_len)
8536 return -EINVAL;
8537
8538 if (params.beacon_csa.tail[offset] != params.count)
8539 return -EINVAL;
8540 }
8541
8542 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8543 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8544 if (!len || (len % sizeof(u16)))
8545 return -EINVAL;
8546
8547 params.n_counter_offsets_presp = len / sizeof(u16);
8548 if (rdev->wiphy.max_num_csa_counters &&
8549 (params.n_counter_offsets_presp >
8550 rdev->wiphy.max_num_csa_counters))
8551 return -EINVAL;
8552
8553 params.counter_offsets_presp =
8554 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8555
8556 /* sanity checks - counters should fit and be the same */
8557 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8558 u16 offset = params.counter_offsets_presp[i];
8559
8560 if (offset >= params.beacon_csa.probe_resp_len)
8561 return -EINVAL;
8562
8563 if (params.beacon_csa.probe_resp[offset] !=
8564 params.count)
8565 return -EINVAL;
8566 }
8567 }
8568
8569 skip_beacons:
8570 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef);
8571 if (err)
8572 return err;
8573
8574 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef,
8575 wdev->iftype))
8576 return -EINVAL;
8577
8578 err = cfg80211_chandef_dfs_required(wdev->wiphy,
8579 ¶ms.chandef,
8580 wdev->iftype);
8581 if (err < 0)
8582 return err;
8583
8584 if (err > 0) {
8585 params.radar_required = true;
8586 if (need_handle_dfs_flag &&
8587 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8588 return -EINVAL;
8589 }
8590 }
8591
8592 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8593 params.block_tx = true;
8594
8595 wdev_lock(wdev);
8596 err = rdev_channel_switch(rdev, dev, ¶ms);
8597 wdev_unlock(wdev);
8598
8599 return err;
8600 }
8601
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)8602 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8603 u32 seq, int flags,
8604 struct cfg80211_registered_device *rdev,
8605 struct wireless_dev *wdev,
8606 struct cfg80211_internal_bss *intbss)
8607 {
8608 struct cfg80211_bss *res = &intbss->pub;
8609 const struct cfg80211_bss_ies *ies;
8610 void *hdr;
8611 struct nlattr *bss;
8612
8613 ASSERT_WDEV_LOCK(wdev);
8614
8615 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8616 NL80211_CMD_NEW_SCAN_RESULTS);
8617 if (!hdr)
8618 return -1;
8619
8620 genl_dump_check_consistent(cb, hdr);
8621
8622 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8623 goto nla_put_failure;
8624 if (wdev->netdev &&
8625 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8626 goto nla_put_failure;
8627 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8628 NL80211_ATTR_PAD))
8629 goto nla_put_failure;
8630
8631 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8632 if (!bss)
8633 goto nla_put_failure;
8634 if ((!is_zero_ether_addr(res->bssid) &&
8635 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8636 goto nla_put_failure;
8637
8638 rcu_read_lock();
8639 /* indicate whether we have probe response data or not */
8640 if (rcu_access_pointer(res->proberesp_ies) &&
8641 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8642 goto fail_unlock_rcu;
8643
8644 /* this pointer prefers to be pointed to probe response data
8645 * but is always valid
8646 */
8647 ies = rcu_dereference(res->ies);
8648 if (ies) {
8649 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8650 NL80211_BSS_PAD))
8651 goto fail_unlock_rcu;
8652 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8653 ies->len, ies->data))
8654 goto fail_unlock_rcu;
8655 }
8656
8657 /* and this pointer is always (unless driver didn't know) beacon data */
8658 ies = rcu_dereference(res->beacon_ies);
8659 if (ies && ies->from_beacon) {
8660 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8661 NL80211_BSS_PAD))
8662 goto fail_unlock_rcu;
8663 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8664 ies->len, ies->data))
8665 goto fail_unlock_rcu;
8666 }
8667 rcu_read_unlock();
8668
8669 if (res->beacon_interval &&
8670 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8671 goto nla_put_failure;
8672 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8673 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8674 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8675 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8676 jiffies_to_msecs(jiffies - intbss->ts)))
8677 goto nla_put_failure;
8678
8679 if (intbss->parent_tsf &&
8680 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8681 intbss->parent_tsf, NL80211_BSS_PAD) ||
8682 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8683 intbss->parent_bssid)))
8684 goto nla_put_failure;
8685
8686 if (intbss->ts_boottime &&
8687 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8688 intbss->ts_boottime, NL80211_BSS_PAD))
8689 goto nla_put_failure;
8690
8691 if (!nl80211_put_signal(msg, intbss->pub.chains,
8692 intbss->pub.chain_signal,
8693 NL80211_BSS_CHAIN_SIGNAL))
8694 goto nla_put_failure;
8695
8696 switch (rdev->wiphy.signal_type) {
8697 case CFG80211_SIGNAL_TYPE_MBM:
8698 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8699 goto nla_put_failure;
8700 break;
8701 case CFG80211_SIGNAL_TYPE_UNSPEC:
8702 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8703 goto nla_put_failure;
8704 break;
8705 default:
8706 break;
8707 }
8708
8709 switch (wdev->iftype) {
8710 case NL80211_IFTYPE_P2P_CLIENT:
8711 case NL80211_IFTYPE_STATION:
8712 if (intbss == wdev->current_bss &&
8713 nla_put_u32(msg, NL80211_BSS_STATUS,
8714 NL80211_BSS_STATUS_ASSOCIATED))
8715 goto nla_put_failure;
8716 break;
8717 case NL80211_IFTYPE_ADHOC:
8718 if (intbss == wdev->current_bss &&
8719 nla_put_u32(msg, NL80211_BSS_STATUS,
8720 NL80211_BSS_STATUS_IBSS_JOINED))
8721 goto nla_put_failure;
8722 break;
8723 default:
8724 break;
8725 }
8726
8727 nla_nest_end(msg, bss);
8728
8729 genlmsg_end(msg, hdr);
8730 return 0;
8731
8732 fail_unlock_rcu:
8733 rcu_read_unlock();
8734 nla_put_failure:
8735 genlmsg_cancel(msg, hdr);
8736 return -EMSGSIZE;
8737 }
8738
nl80211_dump_scan(struct sk_buff * skb,struct netlink_callback * cb)8739 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8740 {
8741 struct cfg80211_registered_device *rdev;
8742 struct cfg80211_internal_bss *scan;
8743 struct wireless_dev *wdev;
8744 int start = cb->args[2], idx = 0;
8745 int err;
8746
8747 rtnl_lock();
8748 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8749 if (err) {
8750 rtnl_unlock();
8751 return err;
8752 }
8753
8754 wdev_lock(wdev);
8755 spin_lock_bh(&rdev->bss_lock);
8756
8757 /*
8758 * dump_scan will be called multiple times to break up the scan results
8759 * into multiple messages. It is unlikely that any more bss-es will be
8760 * expired after the first call, so only call only call this on the
8761 * first dump_scan invocation.
8762 */
8763 if (start == 0)
8764 cfg80211_bss_expire(rdev);
8765
8766 cb->seq = rdev->bss_generation;
8767
8768 list_for_each_entry(scan, &rdev->bss_list, list) {
8769 if (++idx <= start)
8770 continue;
8771 if (nl80211_send_bss(skb, cb,
8772 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8773 rdev, wdev, scan) < 0) {
8774 idx--;
8775 break;
8776 }
8777 }
8778
8779 spin_unlock_bh(&rdev->bss_lock);
8780 wdev_unlock(wdev);
8781
8782 cb->args[2] = idx;
8783 rtnl_unlock();
8784
8785 return skb->len;
8786 }
8787
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)8788 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8789 int flags, struct net_device *dev,
8790 bool allow_radio_stats,
8791 struct survey_info *survey)
8792 {
8793 void *hdr;
8794 struct nlattr *infoattr;
8795
8796 /* skip radio stats if userspace didn't request them */
8797 if (!survey->channel && !allow_radio_stats)
8798 return 0;
8799
8800 hdr = nl80211hdr_put(msg, portid, seq, flags,
8801 NL80211_CMD_NEW_SURVEY_RESULTS);
8802 if (!hdr)
8803 return -ENOMEM;
8804
8805 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8806 goto nla_put_failure;
8807
8808 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8809 if (!infoattr)
8810 goto nla_put_failure;
8811
8812 if (survey->channel &&
8813 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8814 survey->channel->center_freq))
8815 goto nla_put_failure;
8816
8817 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8818 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8819 goto nla_put_failure;
8820 if ((survey->filled & SURVEY_INFO_IN_USE) &&
8821 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8822 goto nla_put_failure;
8823 if ((survey->filled & SURVEY_INFO_TIME) &&
8824 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8825 survey->time, NL80211_SURVEY_INFO_PAD))
8826 goto nla_put_failure;
8827 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8828 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8829 survey->time_busy, NL80211_SURVEY_INFO_PAD))
8830 goto nla_put_failure;
8831 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8832 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8833 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8834 goto nla_put_failure;
8835 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8836 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8837 survey->time_rx, NL80211_SURVEY_INFO_PAD))
8838 goto nla_put_failure;
8839 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8840 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8841 survey->time_tx, NL80211_SURVEY_INFO_PAD))
8842 goto nla_put_failure;
8843 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8844 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8845 survey->time_scan, NL80211_SURVEY_INFO_PAD))
8846 goto nla_put_failure;
8847 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
8848 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
8849 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
8850 goto nla_put_failure;
8851
8852 nla_nest_end(msg, infoattr);
8853
8854 genlmsg_end(msg, hdr);
8855 return 0;
8856
8857 nla_put_failure:
8858 genlmsg_cancel(msg, hdr);
8859 return -EMSGSIZE;
8860 }
8861
nl80211_dump_survey(struct sk_buff * skb,struct netlink_callback * cb)8862 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8863 {
8864 struct nlattr **attrbuf;
8865 struct survey_info survey;
8866 struct cfg80211_registered_device *rdev;
8867 struct wireless_dev *wdev;
8868 int survey_idx = cb->args[2];
8869 int res;
8870 bool radio_stats;
8871
8872 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8873 if (!attrbuf)
8874 return -ENOMEM;
8875
8876 rtnl_lock();
8877 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8878 if (res)
8879 goto out_err;
8880
8881 /* prepare_wdev_dump parsed the attributes */
8882 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8883
8884 if (!wdev->netdev) {
8885 res = -EINVAL;
8886 goto out_err;
8887 }
8888
8889 if (!rdev->ops->dump_survey) {
8890 res = -EOPNOTSUPP;
8891 goto out_err;
8892 }
8893
8894 while (1) {
8895 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8896 if (res == -ENOENT)
8897 break;
8898 if (res)
8899 goto out_err;
8900
8901 /* don't send disabled channels, but do send non-channel data */
8902 if (survey.channel &&
8903 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8904 survey_idx++;
8905 continue;
8906 }
8907
8908 if (nl80211_send_survey(skb,
8909 NETLINK_CB(cb->skb).portid,
8910 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8911 wdev->netdev, radio_stats, &survey) < 0)
8912 goto out;
8913 survey_idx++;
8914 }
8915
8916 out:
8917 cb->args[2] = survey_idx;
8918 res = skb->len;
8919 out_err:
8920 kfree(attrbuf);
8921 rtnl_unlock();
8922 return res;
8923 }
8924
nl80211_valid_wpa_versions(u32 wpa_versions)8925 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8926 {
8927 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8928 NL80211_WPA_VERSION_2 |
8929 NL80211_WPA_VERSION_3));
8930 }
8931
nl80211_authenticate(struct sk_buff * skb,struct genl_info * info)8932 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8933 {
8934 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8935 struct net_device *dev = info->user_ptr[1];
8936 struct ieee80211_channel *chan;
8937 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8938 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8939 enum nl80211_auth_type auth_type;
8940 struct key_parse key;
8941 bool local_state_change;
8942
8943 if (!info->attrs[NL80211_ATTR_MAC])
8944 return -EINVAL;
8945
8946 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8947 return -EINVAL;
8948
8949 if (!info->attrs[NL80211_ATTR_SSID])
8950 return -EINVAL;
8951
8952 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8953 return -EINVAL;
8954
8955 err = nl80211_parse_key(info, &key);
8956 if (err)
8957 return err;
8958
8959 if (key.idx >= 0) {
8960 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8961 return -EINVAL;
8962 if (!key.p.key || !key.p.key_len)
8963 return -EINVAL;
8964 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8965 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8966 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8967 key.p.key_len != WLAN_KEY_LEN_WEP104))
8968 return -EINVAL;
8969 if (key.idx > 3)
8970 return -EINVAL;
8971 } else {
8972 key.p.key_len = 0;
8973 key.p.key = NULL;
8974 }
8975
8976 if (key.idx >= 0) {
8977 int i;
8978 bool ok = false;
8979
8980 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8981 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8982 ok = true;
8983 break;
8984 }
8985 }
8986 if (!ok)
8987 return -EINVAL;
8988 }
8989
8990 if (!rdev->ops->auth)
8991 return -EOPNOTSUPP;
8992
8993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8994 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8995 return -EOPNOTSUPP;
8996
8997 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8998 chan = nl80211_get_valid_chan(&rdev->wiphy,
8999 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9000 if (!chan)
9001 return -EINVAL;
9002
9003 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9004 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9005
9006 if (info->attrs[NL80211_ATTR_IE]) {
9007 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9008 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9009 }
9010
9011 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9012 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9013 return -EINVAL;
9014
9015 if ((auth_type == NL80211_AUTHTYPE_SAE ||
9016 auth_type == NL80211_AUTHTYPE_FILS_SK ||
9017 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9018 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9019 !info->attrs[NL80211_ATTR_AUTH_DATA])
9020 return -EINVAL;
9021
9022 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9023 if (auth_type != NL80211_AUTHTYPE_SAE &&
9024 auth_type != NL80211_AUTHTYPE_FILS_SK &&
9025 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9026 auth_type != NL80211_AUTHTYPE_FILS_PK)
9027 return -EINVAL;
9028 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9029 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9030 /* need to include at least Auth Transaction and Status Code */
9031 if (auth_data_len < 4)
9032 return -EINVAL;
9033 }
9034
9035 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9036
9037 /*
9038 * Since we no longer track auth state, ignore
9039 * requests to only change local state.
9040 */
9041 if (local_state_change)
9042 return 0;
9043
9044 wdev_lock(dev->ieee80211_ptr);
9045 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9046 ssid, ssid_len, ie, ie_len,
9047 key.p.key, key.p.key_len, key.idx,
9048 auth_data, auth_data_len);
9049 wdev_unlock(dev->ieee80211_ptr);
9050 return err;
9051 }
9052
validate_pae_over_nl80211(struct cfg80211_registered_device * rdev,struct genl_info * info)9053 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9054 struct genl_info *info)
9055 {
9056 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9057 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9058 return -EINVAL;
9059 }
9060
9061 if (!rdev->ops->tx_control_port ||
9062 !wiphy_ext_feature_isset(&rdev->wiphy,
9063 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9064 return -EOPNOTSUPP;
9065
9066 return 0;
9067 }
9068
nl80211_crypto_settings(struct cfg80211_registered_device * rdev,struct genl_info * info,struct cfg80211_crypto_settings * settings,int cipher_limit)9069 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9070 struct genl_info *info,
9071 struct cfg80211_crypto_settings *settings,
9072 int cipher_limit)
9073 {
9074 memset(settings, 0, sizeof(*settings));
9075
9076 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9077
9078 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9079 u16 proto;
9080
9081 proto = nla_get_u16(
9082 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9083 settings->control_port_ethertype = cpu_to_be16(proto);
9084 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9085 proto != ETH_P_PAE)
9086 return -EINVAL;
9087 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9088 settings->control_port_no_encrypt = true;
9089 } else
9090 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9091
9092 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9093 int r = validate_pae_over_nl80211(rdev, info);
9094
9095 if (r < 0)
9096 return r;
9097
9098 settings->control_port_over_nl80211 = true;
9099 }
9100
9101 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9102 void *data;
9103 int len, i;
9104
9105 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9106 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9107 settings->n_ciphers_pairwise = len / sizeof(u32);
9108
9109 if (len % sizeof(u32))
9110 return -EINVAL;
9111
9112 if (settings->n_ciphers_pairwise > cipher_limit)
9113 return -EINVAL;
9114
9115 memcpy(settings->ciphers_pairwise, data, len);
9116
9117 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9118 if (!cfg80211_supported_cipher_suite(
9119 &rdev->wiphy,
9120 settings->ciphers_pairwise[i]))
9121 return -EINVAL;
9122 }
9123
9124 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9125 settings->cipher_group =
9126 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9127 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9128 settings->cipher_group))
9129 return -EINVAL;
9130 }
9131
9132 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9133 settings->wpa_versions =
9134 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9135 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9136 return -EINVAL;
9137 }
9138
9139 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9140 void *data;
9141 int len;
9142
9143 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9144 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9145 settings->n_akm_suites = len / sizeof(u32);
9146
9147 if (len % sizeof(u32))
9148 return -EINVAL;
9149
9150 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9151 return -EINVAL;
9152
9153 memcpy(settings->akm_suites, data, len);
9154 }
9155
9156 if (info->attrs[NL80211_ATTR_PMK]) {
9157 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9158 return -EINVAL;
9159 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9160 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9161 return -EINVAL;
9162 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9163 }
9164
9165 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9166 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9167 NL80211_EXT_FEATURE_SAE_OFFLOAD))
9168 return -EINVAL;
9169 settings->sae_pwd =
9170 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9171 settings->sae_pwd_len =
9172 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9173 }
9174
9175 return 0;
9176 }
9177
nl80211_associate(struct sk_buff * skb,struct genl_info * info)9178 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9179 {
9180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9181 struct net_device *dev = info->user_ptr[1];
9182 struct ieee80211_channel *chan;
9183 struct cfg80211_assoc_request req = {};
9184 const u8 *bssid, *ssid;
9185 int err, ssid_len = 0;
9186
9187 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9188 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9189 return -EPERM;
9190
9191 if (!info->attrs[NL80211_ATTR_MAC] ||
9192 !info->attrs[NL80211_ATTR_SSID] ||
9193 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9194 return -EINVAL;
9195
9196 if (!rdev->ops->assoc)
9197 return -EOPNOTSUPP;
9198
9199 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9200 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9201 return -EOPNOTSUPP;
9202
9203 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9204
9205 chan = nl80211_get_valid_chan(&rdev->wiphy,
9206 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9207 if (!chan)
9208 return -EINVAL;
9209
9210 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9211 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9212
9213 if (info->attrs[NL80211_ATTR_IE]) {
9214 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9215 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9216 }
9217
9218 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9219 enum nl80211_mfp mfp =
9220 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9221 if (mfp == NL80211_MFP_REQUIRED)
9222 req.use_mfp = true;
9223 else if (mfp != NL80211_MFP_NO)
9224 return -EINVAL;
9225 }
9226
9227 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9228 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9229
9230 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9231 req.flags |= ASSOC_REQ_DISABLE_HT;
9232
9233 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9234 memcpy(&req.ht_capa_mask,
9235 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9236 sizeof(req.ht_capa_mask));
9237
9238 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9239 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9240 return -EINVAL;
9241 memcpy(&req.ht_capa,
9242 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9243 sizeof(req.ht_capa));
9244 }
9245
9246 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9247 req.flags |= ASSOC_REQ_DISABLE_VHT;
9248
9249 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9250 memcpy(&req.vht_capa_mask,
9251 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9252 sizeof(req.vht_capa_mask));
9253
9254 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9255 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9256 return -EINVAL;
9257 memcpy(&req.vht_capa,
9258 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9259 sizeof(req.vht_capa));
9260 }
9261
9262 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9263 if (!((rdev->wiphy.features &
9264 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9265 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9266 !wiphy_ext_feature_isset(&rdev->wiphy,
9267 NL80211_EXT_FEATURE_RRM))
9268 return -EINVAL;
9269 req.flags |= ASSOC_REQ_USE_RRM;
9270 }
9271
9272 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9273 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9274 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9275 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9276 return -EINVAL;
9277 req.fils_nonces =
9278 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9279 }
9280
9281 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9282 if (!err) {
9283 wdev_lock(dev->ieee80211_ptr);
9284
9285 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9286 ssid, ssid_len, &req);
9287
9288 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9289 dev->ieee80211_ptr->conn_owner_nlportid =
9290 info->snd_portid;
9291 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9292 bssid, ETH_ALEN);
9293 }
9294
9295 wdev_unlock(dev->ieee80211_ptr);
9296 }
9297
9298 return err;
9299 }
9300
nl80211_deauthenticate(struct sk_buff * skb,struct genl_info * info)9301 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9302 {
9303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9304 struct net_device *dev = info->user_ptr[1];
9305 const u8 *ie = NULL, *bssid;
9306 int ie_len = 0, err;
9307 u16 reason_code;
9308 bool local_state_change;
9309
9310 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9311 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9312 return -EPERM;
9313
9314 if (!info->attrs[NL80211_ATTR_MAC])
9315 return -EINVAL;
9316
9317 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9318 return -EINVAL;
9319
9320 if (!rdev->ops->deauth)
9321 return -EOPNOTSUPP;
9322
9323 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9324 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9325 return -EOPNOTSUPP;
9326
9327 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9328
9329 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9330 if (reason_code == 0) {
9331 /* Reason Code 0 is reserved */
9332 return -EINVAL;
9333 }
9334
9335 if (info->attrs[NL80211_ATTR_IE]) {
9336 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9337 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9338 }
9339
9340 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9341
9342 wdev_lock(dev->ieee80211_ptr);
9343 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9344 local_state_change);
9345 wdev_unlock(dev->ieee80211_ptr);
9346 return err;
9347 }
9348
nl80211_disassociate(struct sk_buff * skb,struct genl_info * info)9349 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9350 {
9351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9352 struct net_device *dev = info->user_ptr[1];
9353 const u8 *ie = NULL, *bssid;
9354 int ie_len = 0, err;
9355 u16 reason_code;
9356 bool local_state_change;
9357
9358 if (dev->ieee80211_ptr->conn_owner_nlportid &&
9359 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9360 return -EPERM;
9361
9362 if (!info->attrs[NL80211_ATTR_MAC])
9363 return -EINVAL;
9364
9365 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9366 return -EINVAL;
9367
9368 if (!rdev->ops->disassoc)
9369 return -EOPNOTSUPP;
9370
9371 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9372 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9373 return -EOPNOTSUPP;
9374
9375 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9376
9377 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9378 if (reason_code == 0) {
9379 /* Reason Code 0 is reserved */
9380 return -EINVAL;
9381 }
9382
9383 if (info->attrs[NL80211_ATTR_IE]) {
9384 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9385 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9386 }
9387
9388 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9389
9390 wdev_lock(dev->ieee80211_ptr);
9391 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9392 local_state_change);
9393 wdev_unlock(dev->ieee80211_ptr);
9394 return err;
9395 }
9396
9397 static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device * rdev,int mcast_rate[NUM_NL80211_BANDS],int rateval)9398 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9399 int mcast_rate[NUM_NL80211_BANDS],
9400 int rateval)
9401 {
9402 struct wiphy *wiphy = &rdev->wiphy;
9403 bool found = false;
9404 int band, i;
9405
9406 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9407 struct ieee80211_supported_band *sband;
9408
9409 sband = wiphy->bands[band];
9410 if (!sband)
9411 continue;
9412
9413 for (i = 0; i < sband->n_bitrates; i++) {
9414 if (sband->bitrates[i].bitrate == rateval) {
9415 mcast_rate[band] = i + 1;
9416 found = true;
9417 break;
9418 }
9419 }
9420 }
9421
9422 return found;
9423 }
9424
nl80211_join_ibss(struct sk_buff * skb,struct genl_info * info)9425 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9426 {
9427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9428 struct net_device *dev = info->user_ptr[1];
9429 struct cfg80211_ibss_params ibss;
9430 struct wiphy *wiphy;
9431 struct cfg80211_cached_keys *connkeys = NULL;
9432 int err;
9433
9434 memset(&ibss, 0, sizeof(ibss));
9435
9436 if (!info->attrs[NL80211_ATTR_SSID] ||
9437 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9438 return -EINVAL;
9439
9440 ibss.beacon_interval = 100;
9441
9442 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9443 ibss.beacon_interval =
9444 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9445
9446 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9447 ibss.beacon_interval);
9448 if (err)
9449 return err;
9450
9451 if (!rdev->ops->join_ibss)
9452 return -EOPNOTSUPP;
9453
9454 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9455 return -EOPNOTSUPP;
9456
9457 wiphy = &rdev->wiphy;
9458
9459 if (info->attrs[NL80211_ATTR_MAC]) {
9460 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9461
9462 if (!is_valid_ether_addr(ibss.bssid))
9463 return -EINVAL;
9464 }
9465 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9466 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9467
9468 if (info->attrs[NL80211_ATTR_IE]) {
9469 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9470 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9471 }
9472
9473 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9474 if (err)
9475 return err;
9476
9477 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9478 NL80211_IFTYPE_ADHOC))
9479 return -EINVAL;
9480
9481 switch (ibss.chandef.width) {
9482 case NL80211_CHAN_WIDTH_5:
9483 case NL80211_CHAN_WIDTH_10:
9484 case NL80211_CHAN_WIDTH_20_NOHT:
9485 break;
9486 case NL80211_CHAN_WIDTH_20:
9487 case NL80211_CHAN_WIDTH_40:
9488 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9489 return -EINVAL;
9490 break;
9491 case NL80211_CHAN_WIDTH_80:
9492 case NL80211_CHAN_WIDTH_80P80:
9493 case NL80211_CHAN_WIDTH_160:
9494 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9495 return -EINVAL;
9496 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9497 NL80211_EXT_FEATURE_VHT_IBSS))
9498 return -EINVAL;
9499 break;
9500 default:
9501 return -EINVAL;
9502 }
9503
9504 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9505 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9506
9507 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9508 u8 *rates =
9509 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9510 int n_rates =
9511 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9512 struct ieee80211_supported_band *sband =
9513 wiphy->bands[ibss.chandef.chan->band];
9514
9515 err = ieee80211_get_ratemask(sband, rates, n_rates,
9516 &ibss.basic_rates);
9517 if (err)
9518 return err;
9519 }
9520
9521 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9522 memcpy(&ibss.ht_capa_mask,
9523 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9524 sizeof(ibss.ht_capa_mask));
9525
9526 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9527 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9528 return -EINVAL;
9529 memcpy(&ibss.ht_capa,
9530 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9531 sizeof(ibss.ht_capa));
9532 }
9533
9534 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9535 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9536 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9537 return -EINVAL;
9538
9539 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9540 bool no_ht = false;
9541
9542 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9543 if (IS_ERR(connkeys))
9544 return PTR_ERR(connkeys);
9545
9546 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9547 no_ht) {
9548 kzfree(connkeys);
9549 return -EINVAL;
9550 }
9551 }
9552
9553 ibss.control_port =
9554 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9555
9556 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9557 int r = validate_pae_over_nl80211(rdev, info);
9558
9559 if (r < 0) {
9560 kzfree(connkeys);
9561 return r;
9562 }
9563
9564 ibss.control_port_over_nl80211 = true;
9565 }
9566
9567 ibss.userspace_handles_dfs =
9568 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9569
9570 wdev_lock(dev->ieee80211_ptr);
9571 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9572 if (err)
9573 kzfree(connkeys);
9574 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9575 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9576 wdev_unlock(dev->ieee80211_ptr);
9577
9578 return err;
9579 }
9580
nl80211_leave_ibss(struct sk_buff * skb,struct genl_info * info)9581 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9582 {
9583 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9584 struct net_device *dev = info->user_ptr[1];
9585
9586 if (!rdev->ops->leave_ibss)
9587 return -EOPNOTSUPP;
9588
9589 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9590 return -EOPNOTSUPP;
9591
9592 return cfg80211_leave_ibss(rdev, dev, false);
9593 }
9594
nl80211_set_mcast_rate(struct sk_buff * skb,struct genl_info * info)9595 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9596 {
9597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9598 struct net_device *dev = info->user_ptr[1];
9599 int mcast_rate[NUM_NL80211_BANDS];
9600 u32 nla_rate;
9601 int err;
9602
9603 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9604 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9605 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9606 return -EOPNOTSUPP;
9607
9608 if (!rdev->ops->set_mcast_rate)
9609 return -EOPNOTSUPP;
9610
9611 memset(mcast_rate, 0, sizeof(mcast_rate));
9612
9613 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9614 return -EINVAL;
9615
9616 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9617 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9618 return -EINVAL;
9619
9620 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9621
9622 return err;
9623 }
9624
9625 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)9626 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9627 struct wireless_dev *wdev, int approxlen,
9628 u32 portid, u32 seq, enum nl80211_commands cmd,
9629 enum nl80211_attrs attr,
9630 const struct nl80211_vendor_cmd_info *info,
9631 gfp_t gfp)
9632 {
9633 struct sk_buff *skb;
9634 void *hdr;
9635 struct nlattr *data;
9636
9637 skb = nlmsg_new(approxlen + 100, gfp);
9638 if (!skb)
9639 return NULL;
9640
9641 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9642 if (!hdr) {
9643 kfree_skb(skb);
9644 return NULL;
9645 }
9646
9647 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9648 goto nla_put_failure;
9649
9650 if (info) {
9651 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9652 info->vendor_id))
9653 goto nla_put_failure;
9654 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9655 info->subcmd))
9656 goto nla_put_failure;
9657 }
9658
9659 if (wdev) {
9660 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9661 wdev_id(wdev), NL80211_ATTR_PAD))
9662 goto nla_put_failure;
9663 if (wdev->netdev &&
9664 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9665 wdev->netdev->ifindex))
9666 goto nla_put_failure;
9667 }
9668
9669 data = nla_nest_start_noflag(skb, attr);
9670 if (!data)
9671 goto nla_put_failure;
9672
9673 ((void **)skb->cb)[0] = rdev;
9674 ((void **)skb->cb)[1] = hdr;
9675 ((void **)skb->cb)[2] = data;
9676
9677 return skb;
9678
9679 nla_put_failure:
9680 kfree_skb(skb);
9681 return NULL;
9682 }
9683
__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)9684 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9685 struct wireless_dev *wdev,
9686 enum nl80211_commands cmd,
9687 enum nl80211_attrs attr,
9688 unsigned int portid,
9689 int vendor_event_idx,
9690 int approxlen, gfp_t gfp)
9691 {
9692 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9693 const struct nl80211_vendor_cmd_info *info;
9694
9695 switch (cmd) {
9696 case NL80211_CMD_TESTMODE:
9697 if (WARN_ON(vendor_event_idx != -1))
9698 return NULL;
9699 info = NULL;
9700 break;
9701 case NL80211_CMD_VENDOR:
9702 if (WARN_ON(vendor_event_idx < 0 ||
9703 vendor_event_idx >= wiphy->n_vendor_events))
9704 return NULL;
9705 info = &wiphy->vendor_events[vendor_event_idx];
9706 break;
9707 default:
9708 WARN_ON(1);
9709 return NULL;
9710 }
9711
9712 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9713 cmd, attr, info, gfp);
9714 }
9715 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9716
__cfg80211_send_event_skb(struct sk_buff * skb,gfp_t gfp)9717 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9718 {
9719 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9720 void *hdr = ((void **)skb->cb)[1];
9721 struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9722 struct nlattr *data = ((void **)skb->cb)[2];
9723 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9724
9725 /* clear CB data for netlink core to own from now on */
9726 memset(skb->cb, 0, sizeof(skb->cb));
9727
9728 nla_nest_end(skb, data);
9729 genlmsg_end(skb, hdr);
9730
9731 if (nlhdr->nlmsg_pid) {
9732 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9733 nlhdr->nlmsg_pid);
9734 } else {
9735 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9736 mcgrp = NL80211_MCGRP_VENDOR;
9737
9738 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9739 skb, 0, mcgrp, gfp);
9740 }
9741 }
9742 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9743
9744 #ifdef CONFIG_NL80211_TESTMODE
nl80211_testmode_do(struct sk_buff * skb,struct genl_info * info)9745 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9746 {
9747 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9748 struct wireless_dev *wdev =
9749 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9750 int err;
9751
9752 if (!rdev->ops->testmode_cmd)
9753 return -EOPNOTSUPP;
9754
9755 if (IS_ERR(wdev)) {
9756 err = PTR_ERR(wdev);
9757 if (err != -EINVAL)
9758 return err;
9759 wdev = NULL;
9760 } else if (wdev->wiphy != &rdev->wiphy) {
9761 return -EINVAL;
9762 }
9763
9764 if (!info->attrs[NL80211_ATTR_TESTDATA])
9765 return -EINVAL;
9766
9767 rdev->cur_cmd_info = info;
9768 err = rdev_testmode_cmd(rdev, wdev,
9769 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9770 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9771 rdev->cur_cmd_info = NULL;
9772
9773 return err;
9774 }
9775
nl80211_testmode_dump(struct sk_buff * skb,struct netlink_callback * cb)9776 static int nl80211_testmode_dump(struct sk_buff *skb,
9777 struct netlink_callback *cb)
9778 {
9779 struct cfg80211_registered_device *rdev;
9780 struct nlattr **attrbuf = NULL;
9781 int err;
9782 long phy_idx;
9783 void *data = NULL;
9784 int data_len = 0;
9785
9786 rtnl_lock();
9787
9788 if (cb->args[0]) {
9789 /*
9790 * 0 is a valid index, but not valid for args[0],
9791 * so we need to offset by 1.
9792 */
9793 phy_idx = cb->args[0] - 1;
9794
9795 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9796 if (!rdev) {
9797 err = -ENOENT;
9798 goto out_err;
9799 }
9800 } else {
9801 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9802 GFP_KERNEL);
9803 if (!attrbuf) {
9804 err = -ENOMEM;
9805 goto out_err;
9806 }
9807
9808 err = nlmsg_parse_deprecated(cb->nlh,
9809 GENL_HDRLEN + nl80211_fam.hdrsize,
9810 attrbuf, nl80211_fam.maxattr,
9811 nl80211_policy, NULL);
9812 if (err)
9813 goto out_err;
9814
9815 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9816 if (IS_ERR(rdev)) {
9817 err = PTR_ERR(rdev);
9818 goto out_err;
9819 }
9820 phy_idx = rdev->wiphy_idx;
9821
9822 if (attrbuf[NL80211_ATTR_TESTDATA])
9823 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9824 }
9825
9826 if (cb->args[1]) {
9827 data = nla_data((void *)cb->args[1]);
9828 data_len = nla_len((void *)cb->args[1]);
9829 }
9830
9831 if (!rdev->ops->testmode_dump) {
9832 err = -EOPNOTSUPP;
9833 goto out_err;
9834 }
9835
9836 while (1) {
9837 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9838 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9839 NL80211_CMD_TESTMODE);
9840 struct nlattr *tmdata;
9841
9842 if (!hdr)
9843 break;
9844
9845 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9846 genlmsg_cancel(skb, hdr);
9847 break;
9848 }
9849
9850 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9851 if (!tmdata) {
9852 genlmsg_cancel(skb, hdr);
9853 break;
9854 }
9855 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9856 nla_nest_end(skb, tmdata);
9857
9858 if (err == -ENOBUFS || err == -ENOENT) {
9859 genlmsg_cancel(skb, hdr);
9860 break;
9861 } else if (err) {
9862 genlmsg_cancel(skb, hdr);
9863 goto out_err;
9864 }
9865
9866 genlmsg_end(skb, hdr);
9867 }
9868
9869 err = skb->len;
9870 /* see above */
9871 cb->args[0] = phy_idx + 1;
9872 out_err:
9873 kfree(attrbuf);
9874 rtnl_unlock();
9875 return err;
9876 }
9877 #endif
9878
nl80211_connect(struct sk_buff * skb,struct genl_info * info)9879 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9880 {
9881 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9882 struct net_device *dev = info->user_ptr[1];
9883 struct cfg80211_connect_params connect;
9884 struct wiphy *wiphy;
9885 struct cfg80211_cached_keys *connkeys = NULL;
9886 int err;
9887
9888 memset(&connect, 0, sizeof(connect));
9889
9890 if (!info->attrs[NL80211_ATTR_SSID] ||
9891 !nla_len(info->attrs[NL80211_ATTR_SSID]))
9892 return -EINVAL;
9893
9894 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9895 connect.auth_type =
9896 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9897 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9898 NL80211_CMD_CONNECT))
9899 return -EINVAL;
9900 } else
9901 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9902
9903 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9904
9905 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9906 !wiphy_ext_feature_isset(&rdev->wiphy,
9907 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9908 return -EINVAL;
9909 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9910
9911 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9912 NL80211_MAX_NR_CIPHER_SUITES);
9913 if (err)
9914 return err;
9915
9916 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9917 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9918 return -EOPNOTSUPP;
9919
9920 wiphy = &rdev->wiphy;
9921
9922 connect.bg_scan_period = -1;
9923 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9924 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9925 connect.bg_scan_period =
9926 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9927 }
9928
9929 if (info->attrs[NL80211_ATTR_MAC])
9930 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9931 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9932 connect.bssid_hint =
9933 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9934 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9935 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9936
9937 if (info->attrs[NL80211_ATTR_IE]) {
9938 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9939 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9940 }
9941
9942 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9943 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9944 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9945 !wiphy_ext_feature_isset(&rdev->wiphy,
9946 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9947 return -EOPNOTSUPP;
9948 } else {
9949 connect.mfp = NL80211_MFP_NO;
9950 }
9951
9952 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9953 connect.prev_bssid =
9954 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9955
9956 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9957 connect.channel = nl80211_get_valid_chan(
9958 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9959 if (!connect.channel)
9960 return -EINVAL;
9961 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9962 connect.channel_hint = nl80211_get_valid_chan(
9963 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9964 if (!connect.channel_hint)
9965 return -EINVAL;
9966 }
9967
9968 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
9969 connect.edmg.channels =
9970 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
9971
9972 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
9973 connect.edmg.bw_config =
9974 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
9975 }
9976
9977 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9978 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9979 if (IS_ERR(connkeys))
9980 return PTR_ERR(connkeys);
9981 }
9982
9983 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9984 connect.flags |= ASSOC_REQ_DISABLE_HT;
9985
9986 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9987 memcpy(&connect.ht_capa_mask,
9988 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9989 sizeof(connect.ht_capa_mask));
9990
9991 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9992 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9993 kzfree(connkeys);
9994 return -EINVAL;
9995 }
9996 memcpy(&connect.ht_capa,
9997 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9998 sizeof(connect.ht_capa));
9999 }
10000
10001 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10002 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10003
10004 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10005 memcpy(&connect.vht_capa_mask,
10006 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10007 sizeof(connect.vht_capa_mask));
10008
10009 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10010 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10011 kzfree(connkeys);
10012 return -EINVAL;
10013 }
10014 memcpy(&connect.vht_capa,
10015 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10016 sizeof(connect.vht_capa));
10017 }
10018
10019 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10020 if (!((rdev->wiphy.features &
10021 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10022 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10023 !wiphy_ext_feature_isset(&rdev->wiphy,
10024 NL80211_EXT_FEATURE_RRM)) {
10025 kzfree(connkeys);
10026 return -EINVAL;
10027 }
10028 connect.flags |= ASSOC_REQ_USE_RRM;
10029 }
10030
10031 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10032 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10033 kzfree(connkeys);
10034 return -EOPNOTSUPP;
10035 }
10036
10037 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10038 /* bss selection makes no sense if bssid is set */
10039 if (connect.bssid) {
10040 kzfree(connkeys);
10041 return -EINVAL;
10042 }
10043
10044 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10045 wiphy, &connect.bss_select);
10046 if (err) {
10047 kzfree(connkeys);
10048 return err;
10049 }
10050 }
10051
10052 if (wiphy_ext_feature_isset(&rdev->wiphy,
10053 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10054 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10055 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10056 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10057 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10058 connect.fils_erp_username =
10059 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10060 connect.fils_erp_username_len =
10061 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10062 connect.fils_erp_realm =
10063 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10064 connect.fils_erp_realm_len =
10065 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10066 connect.fils_erp_next_seq_num =
10067 nla_get_u16(
10068 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10069 connect.fils_erp_rrk =
10070 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10071 connect.fils_erp_rrk_len =
10072 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10073 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10074 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10075 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10076 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10077 kzfree(connkeys);
10078 return -EINVAL;
10079 }
10080
10081 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10082 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10083 kzfree(connkeys);
10084 GENL_SET_ERR_MSG(info,
10085 "external auth requires connection ownership");
10086 return -EINVAL;
10087 }
10088 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10089 }
10090
10091 wdev_lock(dev->ieee80211_ptr);
10092
10093 err = cfg80211_connect(rdev, dev, &connect, connkeys,
10094 connect.prev_bssid);
10095 if (err)
10096 kzfree(connkeys);
10097
10098 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10099 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10100 if (connect.bssid)
10101 memcpy(dev->ieee80211_ptr->disconnect_bssid,
10102 connect.bssid, ETH_ALEN);
10103 else
10104 memset(dev->ieee80211_ptr->disconnect_bssid,
10105 0, ETH_ALEN);
10106 }
10107
10108 wdev_unlock(dev->ieee80211_ptr);
10109
10110 return err;
10111 }
10112
nl80211_update_connect_params(struct sk_buff * skb,struct genl_info * info)10113 static int nl80211_update_connect_params(struct sk_buff *skb,
10114 struct genl_info *info)
10115 {
10116 struct cfg80211_connect_params connect = {};
10117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10118 struct net_device *dev = info->user_ptr[1];
10119 struct wireless_dev *wdev = dev->ieee80211_ptr;
10120 bool fils_sk_offload;
10121 u32 auth_type;
10122 u32 changed = 0;
10123 int ret;
10124
10125 if (!rdev->ops->update_connect_params)
10126 return -EOPNOTSUPP;
10127
10128 if (info->attrs[NL80211_ATTR_IE]) {
10129 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10130 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10131 changed |= UPDATE_ASSOC_IES;
10132 }
10133
10134 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10135 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10136
10137 /*
10138 * when driver supports fils-sk offload all attributes must be
10139 * provided. So the else covers "fils-sk-not-all" and
10140 * "no-fils-sk-any".
10141 */
10142 if (fils_sk_offload &&
10143 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10144 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10145 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10146 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10147 connect.fils_erp_username =
10148 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10149 connect.fils_erp_username_len =
10150 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10151 connect.fils_erp_realm =
10152 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10153 connect.fils_erp_realm_len =
10154 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10155 connect.fils_erp_next_seq_num =
10156 nla_get_u16(
10157 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10158 connect.fils_erp_rrk =
10159 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10160 connect.fils_erp_rrk_len =
10161 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10162 changed |= UPDATE_FILS_ERP_INFO;
10163 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10164 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10165 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10166 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10167 return -EINVAL;
10168 }
10169
10170 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10171 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10172 if (!nl80211_valid_auth_type(rdev, auth_type,
10173 NL80211_CMD_CONNECT))
10174 return -EINVAL;
10175
10176 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10177 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10178 return -EINVAL;
10179
10180 connect.auth_type = auth_type;
10181 changed |= UPDATE_AUTH_TYPE;
10182 }
10183
10184 wdev_lock(dev->ieee80211_ptr);
10185 if (!wdev->current_bss)
10186 ret = -ENOLINK;
10187 else
10188 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10189 wdev_unlock(dev->ieee80211_ptr);
10190
10191 return ret;
10192 }
10193
nl80211_disconnect(struct sk_buff * skb,struct genl_info * info)10194 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10195 {
10196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10197 struct net_device *dev = info->user_ptr[1];
10198 u16 reason;
10199 int ret;
10200
10201 if (dev->ieee80211_ptr->conn_owner_nlportid &&
10202 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10203 return -EPERM;
10204
10205 if (!info->attrs[NL80211_ATTR_REASON_CODE])
10206 reason = WLAN_REASON_DEAUTH_LEAVING;
10207 else
10208 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10209
10210 if (reason == 0)
10211 return -EINVAL;
10212
10213 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10214 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10215 return -EOPNOTSUPP;
10216
10217 wdev_lock(dev->ieee80211_ptr);
10218 ret = cfg80211_disconnect(rdev, dev, reason, true);
10219 wdev_unlock(dev->ieee80211_ptr);
10220 return ret;
10221 }
10222
nl80211_wiphy_netns(struct sk_buff * skb,struct genl_info * info)10223 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10224 {
10225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10226 struct net *net;
10227 int err;
10228
10229 if (info->attrs[NL80211_ATTR_PID]) {
10230 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10231
10232 net = get_net_ns_by_pid(pid);
10233 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10234 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10235
10236 net = get_net_ns_by_fd(fd);
10237 } else {
10238 return -EINVAL;
10239 }
10240
10241 if (IS_ERR(net))
10242 return PTR_ERR(net);
10243
10244 err = 0;
10245
10246 /* check if anything to do */
10247 if (!net_eq(wiphy_net(&rdev->wiphy), net))
10248 err = cfg80211_switch_netns(rdev, net);
10249
10250 put_net(net);
10251 return err;
10252 }
10253
nl80211_setdel_pmksa(struct sk_buff * skb,struct genl_info * info)10254 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10255 {
10256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10257 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10258 struct cfg80211_pmksa *pmksa) = NULL;
10259 struct net_device *dev = info->user_ptr[1];
10260 struct cfg80211_pmksa pmksa;
10261
10262 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10263
10264 if (!info->attrs[NL80211_ATTR_PMKID])
10265 return -EINVAL;
10266
10267 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10268
10269 if (info->attrs[NL80211_ATTR_MAC]) {
10270 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10271 } else if (info->attrs[NL80211_ATTR_SSID] &&
10272 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10273 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10274 info->attrs[NL80211_ATTR_PMK])) {
10275 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10276 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10277 pmksa.cache_id =
10278 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10279 } else {
10280 return -EINVAL;
10281 }
10282 if (info->attrs[NL80211_ATTR_PMK]) {
10283 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10284 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10285 }
10286
10287 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10289 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10290 wiphy_ext_feature_isset(&rdev->wiphy,
10291 NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10292 return -EOPNOTSUPP;
10293
10294 switch (info->genlhdr->cmd) {
10295 case NL80211_CMD_SET_PMKSA:
10296 rdev_ops = rdev->ops->set_pmksa;
10297 break;
10298 case NL80211_CMD_DEL_PMKSA:
10299 rdev_ops = rdev->ops->del_pmksa;
10300 break;
10301 default:
10302 WARN_ON(1);
10303 break;
10304 }
10305
10306 if (!rdev_ops)
10307 return -EOPNOTSUPP;
10308
10309 return rdev_ops(&rdev->wiphy, dev, &pmksa);
10310 }
10311
nl80211_flush_pmksa(struct sk_buff * skb,struct genl_info * info)10312 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10313 {
10314 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10315 struct net_device *dev = info->user_ptr[1];
10316
10317 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10318 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10319 return -EOPNOTSUPP;
10320
10321 if (!rdev->ops->flush_pmksa)
10322 return -EOPNOTSUPP;
10323
10324 return rdev_flush_pmksa(rdev, dev);
10325 }
10326
nl80211_tdls_mgmt(struct sk_buff * skb,struct genl_info * info)10327 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10328 {
10329 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10330 struct net_device *dev = info->user_ptr[1];
10331 u8 action_code, dialog_token;
10332 u32 peer_capability = 0;
10333 u16 status_code;
10334 u8 *peer;
10335 bool initiator;
10336
10337 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10338 !rdev->ops->tdls_mgmt)
10339 return -EOPNOTSUPP;
10340
10341 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10342 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10343 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10344 !info->attrs[NL80211_ATTR_IE] ||
10345 !info->attrs[NL80211_ATTR_MAC])
10346 return -EINVAL;
10347
10348 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10349 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10350 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10351 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10352 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10353 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10354 peer_capability =
10355 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10356
10357 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10358 dialog_token, status_code, peer_capability,
10359 initiator,
10360 nla_data(info->attrs[NL80211_ATTR_IE]),
10361 nla_len(info->attrs[NL80211_ATTR_IE]));
10362 }
10363
nl80211_tdls_oper(struct sk_buff * skb,struct genl_info * info)10364 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10365 {
10366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10367 struct net_device *dev = info->user_ptr[1];
10368 enum nl80211_tdls_operation operation;
10369 u8 *peer;
10370
10371 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10372 !rdev->ops->tdls_oper)
10373 return -EOPNOTSUPP;
10374
10375 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10376 !info->attrs[NL80211_ATTR_MAC])
10377 return -EINVAL;
10378
10379 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10380 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10381
10382 return rdev_tdls_oper(rdev, dev, peer, operation);
10383 }
10384
nl80211_remain_on_channel(struct sk_buff * skb,struct genl_info * info)10385 static int nl80211_remain_on_channel(struct sk_buff *skb,
10386 struct genl_info *info)
10387 {
10388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10389 struct wireless_dev *wdev = info->user_ptr[1];
10390 struct cfg80211_chan_def chandef;
10391 const struct cfg80211_chan_def *compat_chandef;
10392 struct sk_buff *msg;
10393 void *hdr;
10394 u64 cookie;
10395 u32 duration;
10396 int err;
10397
10398 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10399 !info->attrs[NL80211_ATTR_DURATION])
10400 return -EINVAL;
10401
10402 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10403
10404 if (!rdev->ops->remain_on_channel ||
10405 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10406 return -EOPNOTSUPP;
10407
10408 /*
10409 * We should be on that channel for at least a minimum amount of
10410 * time (10ms) but no longer than the driver supports.
10411 */
10412 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10413 duration > rdev->wiphy.max_remain_on_channel_duration)
10414 return -EINVAL;
10415
10416 err = nl80211_parse_chandef(rdev, info, &chandef);
10417 if (err)
10418 return err;
10419
10420 wdev_lock(wdev);
10421 if (!cfg80211_off_channel_oper_allowed(wdev) &&
10422 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10423 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10424 &chandef);
10425 if (compat_chandef != &chandef) {
10426 wdev_unlock(wdev);
10427 return -EBUSY;
10428 }
10429 }
10430 wdev_unlock(wdev);
10431
10432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10433 if (!msg)
10434 return -ENOMEM;
10435
10436 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10437 NL80211_CMD_REMAIN_ON_CHANNEL);
10438 if (!hdr) {
10439 err = -ENOBUFS;
10440 goto free_msg;
10441 }
10442
10443 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10444 duration, &cookie);
10445
10446 if (err)
10447 goto free_msg;
10448
10449 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10450 NL80211_ATTR_PAD))
10451 goto nla_put_failure;
10452
10453 genlmsg_end(msg, hdr);
10454
10455 return genlmsg_reply(msg, info);
10456
10457 nla_put_failure:
10458 err = -ENOBUFS;
10459 free_msg:
10460 nlmsg_free(msg);
10461 return err;
10462 }
10463
nl80211_cancel_remain_on_channel(struct sk_buff * skb,struct genl_info * info)10464 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10465 struct genl_info *info)
10466 {
10467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10468 struct wireless_dev *wdev = info->user_ptr[1];
10469 u64 cookie;
10470
10471 if (!info->attrs[NL80211_ATTR_COOKIE])
10472 return -EINVAL;
10473
10474 if (!rdev->ops->cancel_remain_on_channel)
10475 return -EOPNOTSUPP;
10476
10477 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10478
10479 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10480 }
10481
nl80211_set_tx_bitrate_mask(struct sk_buff * skb,struct genl_info * info)10482 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10483 struct genl_info *info)
10484 {
10485 struct cfg80211_bitrate_mask mask;
10486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10487 struct net_device *dev = info->user_ptr[1];
10488 int err;
10489
10490 if (!rdev->ops->set_bitrate_mask)
10491 return -EOPNOTSUPP;
10492
10493 err = nl80211_parse_tx_bitrate_mask(info, &mask);
10494 if (err)
10495 return err;
10496
10497 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10498 }
10499
nl80211_register_mgmt(struct sk_buff * skb,struct genl_info * info)10500 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10501 {
10502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10503 struct wireless_dev *wdev = info->user_ptr[1];
10504 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10505
10506 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10507 return -EINVAL;
10508
10509 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10510 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10511
10512 switch (wdev->iftype) {
10513 case NL80211_IFTYPE_STATION:
10514 case NL80211_IFTYPE_ADHOC:
10515 case NL80211_IFTYPE_P2P_CLIENT:
10516 case NL80211_IFTYPE_AP:
10517 case NL80211_IFTYPE_AP_VLAN:
10518 case NL80211_IFTYPE_MESH_POINT:
10519 case NL80211_IFTYPE_P2P_GO:
10520 case NL80211_IFTYPE_P2P_DEVICE:
10521 break;
10522 case NL80211_IFTYPE_NAN:
10523 default:
10524 return -EOPNOTSUPP;
10525 }
10526
10527 /* not much point in registering if we can't reply */
10528 if (!rdev->ops->mgmt_tx)
10529 return -EOPNOTSUPP;
10530
10531 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10532 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10533 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10534 }
10535
nl80211_tx_mgmt(struct sk_buff * skb,struct genl_info * info)10536 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10537 {
10538 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10539 struct wireless_dev *wdev = info->user_ptr[1];
10540 struct cfg80211_chan_def chandef;
10541 int err;
10542 void *hdr = NULL;
10543 u64 cookie;
10544 struct sk_buff *msg = NULL;
10545 struct cfg80211_mgmt_tx_params params = {
10546 .dont_wait_for_ack =
10547 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10548 };
10549
10550 if (!info->attrs[NL80211_ATTR_FRAME])
10551 return -EINVAL;
10552
10553 if (!rdev->ops->mgmt_tx)
10554 return -EOPNOTSUPP;
10555
10556 switch (wdev->iftype) {
10557 case NL80211_IFTYPE_P2P_DEVICE:
10558 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10559 return -EINVAL;
10560 case NL80211_IFTYPE_STATION:
10561 case NL80211_IFTYPE_ADHOC:
10562 case NL80211_IFTYPE_P2P_CLIENT:
10563 case NL80211_IFTYPE_AP:
10564 case NL80211_IFTYPE_AP_VLAN:
10565 case NL80211_IFTYPE_MESH_POINT:
10566 case NL80211_IFTYPE_P2P_GO:
10567 break;
10568 case NL80211_IFTYPE_NAN:
10569 default:
10570 return -EOPNOTSUPP;
10571 }
10572
10573 if (info->attrs[NL80211_ATTR_DURATION]) {
10574 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10575 return -EINVAL;
10576 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10577
10578 /*
10579 * We should wait on the channel for at least a minimum amount
10580 * of time (10ms) but no longer than the driver supports.
10581 */
10582 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10583 params.wait > rdev->wiphy.max_remain_on_channel_duration)
10584 return -EINVAL;
10585 }
10586
10587 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10588
10589 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10590 return -EINVAL;
10591
10592 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10593
10594 /* get the channel if any has been specified, otherwise pass NULL to
10595 * the driver. The latter will use the current one
10596 */
10597 chandef.chan = NULL;
10598 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10599 err = nl80211_parse_chandef(rdev, info, &chandef);
10600 if (err)
10601 return err;
10602 }
10603
10604 if (!chandef.chan && params.offchan)
10605 return -EINVAL;
10606
10607 wdev_lock(wdev);
10608 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10609 wdev_unlock(wdev);
10610 return -EBUSY;
10611 }
10612 wdev_unlock(wdev);
10613
10614 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10615 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10616
10617 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10618 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10619 int i;
10620
10621 if (len % sizeof(u16))
10622 return -EINVAL;
10623
10624 params.n_csa_offsets = len / sizeof(u16);
10625 params.csa_offsets =
10626 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10627
10628 /* check that all the offsets fit the frame */
10629 for (i = 0; i < params.n_csa_offsets; i++) {
10630 if (params.csa_offsets[i] >= params.len)
10631 return -EINVAL;
10632 }
10633 }
10634
10635 if (!params.dont_wait_for_ack) {
10636 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10637 if (!msg)
10638 return -ENOMEM;
10639
10640 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10641 NL80211_CMD_FRAME);
10642 if (!hdr) {
10643 err = -ENOBUFS;
10644 goto free_msg;
10645 }
10646 }
10647
10648 params.chan = chandef.chan;
10649 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie);
10650 if (err)
10651 goto free_msg;
10652
10653 if (msg) {
10654 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10655 NL80211_ATTR_PAD))
10656 goto nla_put_failure;
10657
10658 genlmsg_end(msg, hdr);
10659 return genlmsg_reply(msg, info);
10660 }
10661
10662 return 0;
10663
10664 nla_put_failure:
10665 err = -ENOBUFS;
10666 free_msg:
10667 nlmsg_free(msg);
10668 return err;
10669 }
10670
nl80211_tx_mgmt_cancel_wait(struct sk_buff * skb,struct genl_info * info)10671 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10672 {
10673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10674 struct wireless_dev *wdev = info->user_ptr[1];
10675 u64 cookie;
10676
10677 if (!info->attrs[NL80211_ATTR_COOKIE])
10678 return -EINVAL;
10679
10680 if (!rdev->ops->mgmt_tx_cancel_wait)
10681 return -EOPNOTSUPP;
10682
10683 switch (wdev->iftype) {
10684 case NL80211_IFTYPE_STATION:
10685 case NL80211_IFTYPE_ADHOC:
10686 case NL80211_IFTYPE_P2P_CLIENT:
10687 case NL80211_IFTYPE_AP:
10688 case NL80211_IFTYPE_AP_VLAN:
10689 case NL80211_IFTYPE_P2P_GO:
10690 case NL80211_IFTYPE_P2P_DEVICE:
10691 break;
10692 case NL80211_IFTYPE_NAN:
10693 default:
10694 return -EOPNOTSUPP;
10695 }
10696
10697 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10698
10699 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10700 }
10701
nl80211_set_power_save(struct sk_buff * skb,struct genl_info * info)10702 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10703 {
10704 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10705 struct wireless_dev *wdev;
10706 struct net_device *dev = info->user_ptr[1];
10707 u8 ps_state;
10708 bool state;
10709 int err;
10710
10711 if (!info->attrs[NL80211_ATTR_PS_STATE])
10712 return -EINVAL;
10713
10714 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10715
10716 wdev = dev->ieee80211_ptr;
10717
10718 if (!rdev->ops->set_power_mgmt)
10719 return -EOPNOTSUPP;
10720
10721 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10722
10723 if (state == wdev->ps)
10724 return 0;
10725
10726 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10727 if (!err)
10728 wdev->ps = state;
10729 return err;
10730 }
10731
nl80211_get_power_save(struct sk_buff * skb,struct genl_info * info)10732 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10733 {
10734 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10735 enum nl80211_ps_state ps_state;
10736 struct wireless_dev *wdev;
10737 struct net_device *dev = info->user_ptr[1];
10738 struct sk_buff *msg;
10739 void *hdr;
10740 int err;
10741
10742 wdev = dev->ieee80211_ptr;
10743
10744 if (!rdev->ops->set_power_mgmt)
10745 return -EOPNOTSUPP;
10746
10747 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10748 if (!msg)
10749 return -ENOMEM;
10750
10751 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10752 NL80211_CMD_GET_POWER_SAVE);
10753 if (!hdr) {
10754 err = -ENOBUFS;
10755 goto free_msg;
10756 }
10757
10758 if (wdev->ps)
10759 ps_state = NL80211_PS_ENABLED;
10760 else
10761 ps_state = NL80211_PS_DISABLED;
10762
10763 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10764 goto nla_put_failure;
10765
10766 genlmsg_end(msg, hdr);
10767 return genlmsg_reply(msg, info);
10768
10769 nla_put_failure:
10770 err = -ENOBUFS;
10771 free_msg:
10772 nlmsg_free(msg);
10773 return err;
10774 }
10775
10776 static const struct nla_policy
10777 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10778 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10779 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10780 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10781 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10782 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10783 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10784 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10785 };
10786
nl80211_set_cqm_txe(struct genl_info * info,u32 rate,u32 pkts,u32 intvl)10787 static int nl80211_set_cqm_txe(struct genl_info *info,
10788 u32 rate, u32 pkts, u32 intvl)
10789 {
10790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10791 struct net_device *dev = info->user_ptr[1];
10792 struct wireless_dev *wdev = dev->ieee80211_ptr;
10793
10794 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10795 return -EINVAL;
10796
10797 if (!rdev->ops->set_cqm_txe_config)
10798 return -EOPNOTSUPP;
10799
10800 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10801 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10802 return -EOPNOTSUPP;
10803
10804 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10805 }
10806
cfg80211_cqm_rssi_update(struct cfg80211_registered_device * rdev,struct net_device * dev)10807 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10808 struct net_device *dev)
10809 {
10810 struct wireless_dev *wdev = dev->ieee80211_ptr;
10811 s32 last, low, high;
10812 u32 hyst;
10813 int i, n, low_index;
10814 int err;
10815
10816 /* RSSI reporting disabled? */
10817 if (!wdev->cqm_config)
10818 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10819
10820 /*
10821 * Obtain current RSSI value if possible, if not and no RSSI threshold
10822 * event has been received yet, we should receive an event after a
10823 * connection is established and enough beacons received to calculate
10824 * the average.
10825 */
10826 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10827 rdev->ops->get_station) {
10828 struct station_info sinfo = {};
10829 u8 *mac_addr;
10830
10831 mac_addr = wdev->current_bss->pub.bssid;
10832
10833 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10834 if (err)
10835 return err;
10836
10837 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10838 wdev->cqm_config->last_rssi_event_value =
10839 (s8) sinfo.rx_beacon_signal_avg;
10840 }
10841
10842 last = wdev->cqm_config->last_rssi_event_value;
10843 hyst = wdev->cqm_config->rssi_hyst;
10844 n = wdev->cqm_config->n_rssi_thresholds;
10845
10846 for (i = 0; i < n; i++) {
10847 i = array_index_nospec(i, n);
10848 if (last < wdev->cqm_config->rssi_thresholds[i])
10849 break;
10850 }
10851
10852 low_index = i - 1;
10853 if (low_index >= 0) {
10854 low_index = array_index_nospec(low_index, n);
10855 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10856 } else {
10857 low = S32_MIN;
10858 }
10859 if (i < n) {
10860 i = array_index_nospec(i, n);
10861 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10862 } else {
10863 high = S32_MAX;
10864 }
10865
10866 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10867 }
10868
nl80211_set_cqm_rssi(struct genl_info * info,const s32 * thresholds,int n_thresholds,u32 hysteresis)10869 static int nl80211_set_cqm_rssi(struct genl_info *info,
10870 const s32 *thresholds, int n_thresholds,
10871 u32 hysteresis)
10872 {
10873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10874 struct net_device *dev = info->user_ptr[1];
10875 struct wireless_dev *wdev = dev->ieee80211_ptr;
10876 int i, err;
10877 s32 prev = S32_MIN;
10878
10879 /* Check all values negative and sorted */
10880 for (i = 0; i < n_thresholds; i++) {
10881 if (thresholds[i] > 0 || thresholds[i] <= prev)
10882 return -EINVAL;
10883
10884 prev = thresholds[i];
10885 }
10886
10887 if (wdev->iftype != NL80211_IFTYPE_STATION &&
10888 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10889 return -EOPNOTSUPP;
10890
10891 wdev_lock(wdev);
10892 cfg80211_cqm_config_free(wdev);
10893 wdev_unlock(wdev);
10894
10895 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10896 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10897 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10898
10899 return rdev_set_cqm_rssi_config(rdev, dev,
10900 thresholds[0], hysteresis);
10901 }
10902
10903 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10904 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10905 return -EOPNOTSUPP;
10906
10907 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10908 n_thresholds = 0;
10909
10910 wdev_lock(wdev);
10911 if (n_thresholds) {
10912 struct cfg80211_cqm_config *cqm_config;
10913
10914 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10915 n_thresholds * sizeof(s32), GFP_KERNEL);
10916 if (!cqm_config) {
10917 err = -ENOMEM;
10918 goto unlock;
10919 }
10920
10921 cqm_config->rssi_hyst = hysteresis;
10922 cqm_config->n_rssi_thresholds = n_thresholds;
10923 memcpy(cqm_config->rssi_thresholds, thresholds,
10924 n_thresholds * sizeof(s32));
10925
10926 wdev->cqm_config = cqm_config;
10927 }
10928
10929 err = cfg80211_cqm_rssi_update(rdev, dev);
10930
10931 unlock:
10932 wdev_unlock(wdev);
10933
10934 return err;
10935 }
10936
nl80211_set_cqm(struct sk_buff * skb,struct genl_info * info)10937 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10938 {
10939 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10940 struct nlattr *cqm;
10941 int err;
10942
10943 cqm = info->attrs[NL80211_ATTR_CQM];
10944 if (!cqm)
10945 return -EINVAL;
10946
10947 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10948 nl80211_attr_cqm_policy,
10949 info->extack);
10950 if (err)
10951 return err;
10952
10953 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10954 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10955 const s32 *thresholds =
10956 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10957 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10958 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10959
10960 if (len % 4)
10961 return -EINVAL;
10962
10963 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10964 hysteresis);
10965 }
10966
10967 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10968 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10969 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10970 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10971 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10972 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10973
10974 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10975 }
10976
10977 return -EINVAL;
10978 }
10979
nl80211_join_ocb(struct sk_buff * skb,struct genl_info * info)10980 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10981 {
10982 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10983 struct net_device *dev = info->user_ptr[1];
10984 struct ocb_setup setup = {};
10985 int err;
10986
10987 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10988 if (err)
10989 return err;
10990
10991 return cfg80211_join_ocb(rdev, dev, &setup);
10992 }
10993
nl80211_leave_ocb(struct sk_buff * skb,struct genl_info * info)10994 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
10995 {
10996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10997 struct net_device *dev = info->user_ptr[1];
10998
10999 return cfg80211_leave_ocb(rdev, dev);
11000 }
11001
nl80211_join_mesh(struct sk_buff * skb,struct genl_info * info)11002 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11003 {
11004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11005 struct net_device *dev = info->user_ptr[1];
11006 struct mesh_config cfg;
11007 struct mesh_setup setup;
11008 int err;
11009
11010 /* start with default */
11011 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11012 memcpy(&setup, &default_mesh_setup, sizeof(setup));
11013
11014 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11015 /* and parse parameters if given */
11016 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11017 if (err)
11018 return err;
11019 }
11020
11021 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11022 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11023 return -EINVAL;
11024
11025 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11026 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11027
11028 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11029 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11030 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11031 return -EINVAL;
11032
11033 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11034 setup.beacon_interval =
11035 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11036
11037 err = cfg80211_validate_beacon_int(rdev,
11038 NL80211_IFTYPE_MESH_POINT,
11039 setup.beacon_interval);
11040 if (err)
11041 return err;
11042 }
11043
11044 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11045 setup.dtim_period =
11046 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11047 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11048 return -EINVAL;
11049 }
11050
11051 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11052 /* parse additional setup parameters if given */
11053 err = nl80211_parse_mesh_setup(info, &setup);
11054 if (err)
11055 return err;
11056 }
11057
11058 if (setup.user_mpm)
11059 cfg.auto_open_plinks = false;
11060
11061 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11062 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11063 if (err)
11064 return err;
11065 } else {
11066 /* __cfg80211_join_mesh() will sort it out */
11067 setup.chandef.chan = NULL;
11068 }
11069
11070 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11071 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11072 int n_rates =
11073 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11074 struct ieee80211_supported_band *sband;
11075
11076 if (!setup.chandef.chan)
11077 return -EINVAL;
11078
11079 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11080
11081 err = ieee80211_get_ratemask(sband, rates, n_rates,
11082 &setup.basic_rates);
11083 if (err)
11084 return err;
11085 }
11086
11087 if (info->attrs[NL80211_ATTR_TX_RATES]) {
11088 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11089 if (err)
11090 return err;
11091
11092 if (!setup.chandef.chan)
11093 return -EINVAL;
11094
11095 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11096 &setup.beacon_rate);
11097 if (err)
11098 return err;
11099 }
11100
11101 setup.userspace_handles_dfs =
11102 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11103
11104 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11105 int r = validate_pae_over_nl80211(rdev, info);
11106
11107 if (r < 0)
11108 return r;
11109
11110 setup.control_port_over_nl80211 = true;
11111 }
11112
11113 wdev_lock(dev->ieee80211_ptr);
11114 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11115 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11116 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11117 wdev_unlock(dev->ieee80211_ptr);
11118
11119 return err;
11120 }
11121
nl80211_leave_mesh(struct sk_buff * skb,struct genl_info * info)11122 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11123 {
11124 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11125 struct net_device *dev = info->user_ptr[1];
11126
11127 return cfg80211_leave_mesh(rdev, dev);
11128 }
11129
11130 #ifdef CONFIG_PM
nl80211_send_wowlan_patterns(struct sk_buff * msg,struct cfg80211_registered_device * rdev)11131 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11132 struct cfg80211_registered_device *rdev)
11133 {
11134 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11135 struct nlattr *nl_pats, *nl_pat;
11136 int i, pat_len;
11137
11138 if (!wowlan->n_patterns)
11139 return 0;
11140
11141 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11142 if (!nl_pats)
11143 return -ENOBUFS;
11144
11145 for (i = 0; i < wowlan->n_patterns; i++) {
11146 nl_pat = nla_nest_start_noflag(msg, i + 1);
11147 if (!nl_pat)
11148 return -ENOBUFS;
11149 pat_len = wowlan->patterns[i].pattern_len;
11150 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11151 wowlan->patterns[i].mask) ||
11152 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11153 wowlan->patterns[i].pattern) ||
11154 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11155 wowlan->patterns[i].pkt_offset))
11156 return -ENOBUFS;
11157 nla_nest_end(msg, nl_pat);
11158 }
11159 nla_nest_end(msg, nl_pats);
11160
11161 return 0;
11162 }
11163
nl80211_send_wowlan_tcp(struct sk_buff * msg,struct cfg80211_wowlan_tcp * tcp)11164 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11165 struct cfg80211_wowlan_tcp *tcp)
11166 {
11167 struct nlattr *nl_tcp;
11168
11169 if (!tcp)
11170 return 0;
11171
11172 nl_tcp = nla_nest_start_noflag(msg,
11173 NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11174 if (!nl_tcp)
11175 return -ENOBUFS;
11176
11177 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11178 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11179 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11180 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11181 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11182 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11183 tcp->payload_len, tcp->payload) ||
11184 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11185 tcp->data_interval) ||
11186 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11187 tcp->wake_len, tcp->wake_data) ||
11188 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11189 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11190 return -ENOBUFS;
11191
11192 if (tcp->payload_seq.len &&
11193 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11194 sizeof(tcp->payload_seq), &tcp->payload_seq))
11195 return -ENOBUFS;
11196
11197 if (tcp->payload_tok.len &&
11198 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11199 sizeof(tcp->payload_tok) + tcp->tokens_size,
11200 &tcp->payload_tok))
11201 return -ENOBUFS;
11202
11203 nla_nest_end(msg, nl_tcp);
11204
11205 return 0;
11206 }
11207
nl80211_send_wowlan_nd(struct sk_buff * msg,struct cfg80211_sched_scan_request * req)11208 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11209 struct cfg80211_sched_scan_request *req)
11210 {
11211 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11212 int i;
11213
11214 if (!req)
11215 return 0;
11216
11217 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11218 if (!nd)
11219 return -ENOBUFS;
11220
11221 if (req->n_scan_plans == 1 &&
11222 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11223 req->scan_plans[0].interval * 1000))
11224 return -ENOBUFS;
11225
11226 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11227 return -ENOBUFS;
11228
11229 if (req->relative_rssi_set) {
11230 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11231
11232 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11233 req->relative_rssi))
11234 return -ENOBUFS;
11235
11236 rssi_adjust.band = req->rssi_adjust.band;
11237 rssi_adjust.delta = req->rssi_adjust.delta;
11238 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11239 sizeof(rssi_adjust), &rssi_adjust))
11240 return -ENOBUFS;
11241 }
11242
11243 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11244 if (!freqs)
11245 return -ENOBUFS;
11246
11247 for (i = 0; i < req->n_channels; i++) {
11248 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11249 return -ENOBUFS;
11250 }
11251
11252 nla_nest_end(msg, freqs);
11253
11254 if (req->n_match_sets) {
11255 matches = nla_nest_start_noflag(msg,
11256 NL80211_ATTR_SCHED_SCAN_MATCH);
11257 if (!matches)
11258 return -ENOBUFS;
11259
11260 for (i = 0; i < req->n_match_sets; i++) {
11261 match = nla_nest_start_noflag(msg, i);
11262 if (!match)
11263 return -ENOBUFS;
11264
11265 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11266 req->match_sets[i].ssid.ssid_len,
11267 req->match_sets[i].ssid.ssid))
11268 return -ENOBUFS;
11269 nla_nest_end(msg, match);
11270 }
11271 nla_nest_end(msg, matches);
11272 }
11273
11274 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11275 if (!scan_plans)
11276 return -ENOBUFS;
11277
11278 for (i = 0; i < req->n_scan_plans; i++) {
11279 scan_plan = nla_nest_start_noflag(msg, i + 1);
11280 if (!scan_plan)
11281 return -ENOBUFS;
11282
11283 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11284 req->scan_plans[i].interval) ||
11285 (req->scan_plans[i].iterations &&
11286 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11287 req->scan_plans[i].iterations)))
11288 return -ENOBUFS;
11289 nla_nest_end(msg, scan_plan);
11290 }
11291 nla_nest_end(msg, scan_plans);
11292
11293 nla_nest_end(msg, nd);
11294
11295 return 0;
11296 }
11297
nl80211_get_wowlan(struct sk_buff * skb,struct genl_info * info)11298 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11299 {
11300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11301 struct sk_buff *msg;
11302 void *hdr;
11303 u32 size = NLMSG_DEFAULT_SIZE;
11304
11305 if (!rdev->wiphy.wowlan)
11306 return -EOPNOTSUPP;
11307
11308 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11309 /* adjust size to have room for all the data */
11310 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11311 rdev->wiphy.wowlan_config->tcp->payload_len +
11312 rdev->wiphy.wowlan_config->tcp->wake_len +
11313 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11314 }
11315
11316 msg = nlmsg_new(size, GFP_KERNEL);
11317 if (!msg)
11318 return -ENOMEM;
11319
11320 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11321 NL80211_CMD_GET_WOWLAN);
11322 if (!hdr)
11323 goto nla_put_failure;
11324
11325 if (rdev->wiphy.wowlan_config) {
11326 struct nlattr *nl_wowlan;
11327
11328 nl_wowlan = nla_nest_start_noflag(msg,
11329 NL80211_ATTR_WOWLAN_TRIGGERS);
11330 if (!nl_wowlan)
11331 goto nla_put_failure;
11332
11333 if ((rdev->wiphy.wowlan_config->any &&
11334 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11335 (rdev->wiphy.wowlan_config->disconnect &&
11336 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11337 (rdev->wiphy.wowlan_config->magic_pkt &&
11338 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11339 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11340 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11341 (rdev->wiphy.wowlan_config->eap_identity_req &&
11342 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11343 (rdev->wiphy.wowlan_config->four_way_handshake &&
11344 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11345 (rdev->wiphy.wowlan_config->rfkill_release &&
11346 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11347 goto nla_put_failure;
11348
11349 if (nl80211_send_wowlan_patterns(msg, rdev))
11350 goto nla_put_failure;
11351
11352 if (nl80211_send_wowlan_tcp(msg,
11353 rdev->wiphy.wowlan_config->tcp))
11354 goto nla_put_failure;
11355
11356 if (nl80211_send_wowlan_nd(
11357 msg,
11358 rdev->wiphy.wowlan_config->nd_config))
11359 goto nla_put_failure;
11360
11361 nla_nest_end(msg, nl_wowlan);
11362 }
11363
11364 genlmsg_end(msg, hdr);
11365 return genlmsg_reply(msg, info);
11366
11367 nla_put_failure:
11368 nlmsg_free(msg);
11369 return -ENOBUFS;
11370 }
11371
nl80211_parse_wowlan_tcp(struct cfg80211_registered_device * rdev,struct nlattr * attr,struct cfg80211_wowlan * trig)11372 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11373 struct nlattr *attr,
11374 struct cfg80211_wowlan *trig)
11375 {
11376 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11377 struct cfg80211_wowlan_tcp *cfg;
11378 struct nl80211_wowlan_tcp_data_token *tok = NULL;
11379 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11380 u32 size;
11381 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11382 int err, port;
11383
11384 if (!rdev->wiphy.wowlan->tcp)
11385 return -EINVAL;
11386
11387 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11388 nl80211_wowlan_tcp_policy, NULL);
11389 if (err)
11390 return err;
11391
11392 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11393 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11394 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11395 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11396 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11397 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11398 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11399 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11400 return -EINVAL;
11401
11402 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11403 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11404 return -EINVAL;
11405
11406 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11407 rdev->wiphy.wowlan->tcp->data_interval_max ||
11408 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11409 return -EINVAL;
11410
11411 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11412 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11413 return -EINVAL;
11414
11415 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11416 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11417 return -EINVAL;
11418
11419 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11420 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11421
11422 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11423 tokens_size = tokln - sizeof(*tok);
11424
11425 if (!tok->len || tokens_size % tok->len)
11426 return -EINVAL;
11427 if (!rdev->wiphy.wowlan->tcp->tok)
11428 return -EINVAL;
11429 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11430 return -EINVAL;
11431 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11432 return -EINVAL;
11433 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11434 return -EINVAL;
11435 if (tok->offset + tok->len > data_size)
11436 return -EINVAL;
11437 }
11438
11439 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11440 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11441 if (!rdev->wiphy.wowlan->tcp->seq)
11442 return -EINVAL;
11443 if (seq->len == 0 || seq->len > 4)
11444 return -EINVAL;
11445 if (seq->len + seq->offset > data_size)
11446 return -EINVAL;
11447 }
11448
11449 size = sizeof(*cfg);
11450 size += data_size;
11451 size += wake_size + wake_mask_size;
11452 size += tokens_size;
11453
11454 cfg = kzalloc(size, GFP_KERNEL);
11455 if (!cfg)
11456 return -ENOMEM;
11457 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11458 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11459 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11460 ETH_ALEN);
11461 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11462 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11463 else
11464 port = 0;
11465 #ifdef CONFIG_INET
11466 /* allocate a socket and port for it and use it */
11467 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11468 IPPROTO_TCP, &cfg->sock, 1);
11469 if (err) {
11470 kfree(cfg);
11471 return err;
11472 }
11473 if (inet_csk_get_port(cfg->sock->sk, port)) {
11474 sock_release(cfg->sock);
11475 kfree(cfg);
11476 return -EADDRINUSE;
11477 }
11478 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11479 #else
11480 if (!port) {
11481 kfree(cfg);
11482 return -EINVAL;
11483 }
11484 cfg->src_port = port;
11485 #endif
11486
11487 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11488 cfg->payload_len = data_size;
11489 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11490 memcpy((void *)cfg->payload,
11491 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11492 data_size);
11493 if (seq)
11494 cfg->payload_seq = *seq;
11495 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11496 cfg->wake_len = wake_size;
11497 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11498 memcpy((void *)cfg->wake_data,
11499 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11500 wake_size);
11501 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11502 data_size + wake_size;
11503 memcpy((void *)cfg->wake_mask,
11504 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11505 wake_mask_size);
11506 if (tok) {
11507 cfg->tokens_size = tokens_size;
11508 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11509 }
11510
11511 trig->tcp = cfg;
11512
11513 return 0;
11514 }
11515
nl80211_parse_wowlan_nd(struct cfg80211_registered_device * rdev,const struct wiphy_wowlan_support * wowlan,struct nlattr * attr,struct cfg80211_wowlan * trig)11516 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11517 const struct wiphy_wowlan_support *wowlan,
11518 struct nlattr *attr,
11519 struct cfg80211_wowlan *trig)
11520 {
11521 struct nlattr **tb;
11522 int err;
11523
11524 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11525 if (!tb)
11526 return -ENOMEM;
11527
11528 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11529 err = -EOPNOTSUPP;
11530 goto out;
11531 }
11532
11533 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11534 nl80211_policy, NULL);
11535 if (err)
11536 goto out;
11537
11538 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11539 wowlan->max_nd_match_sets);
11540 err = PTR_ERR_OR_ZERO(trig->nd_config);
11541 if (err)
11542 trig->nd_config = NULL;
11543
11544 out:
11545 kfree(tb);
11546 return err;
11547 }
11548
nl80211_set_wowlan(struct sk_buff * skb,struct genl_info * info)11549 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11550 {
11551 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11552 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11553 struct cfg80211_wowlan new_triggers = {};
11554 struct cfg80211_wowlan *ntrig;
11555 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11556 int err, i;
11557 bool prev_enabled = rdev->wiphy.wowlan_config;
11558 bool regular = false;
11559
11560 if (!wowlan)
11561 return -EOPNOTSUPP;
11562
11563 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11564 cfg80211_rdev_free_wowlan(rdev);
11565 rdev->wiphy.wowlan_config = NULL;
11566 goto set_wakeup;
11567 }
11568
11569 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11570 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11571 nl80211_wowlan_policy, info->extack);
11572 if (err)
11573 return err;
11574
11575 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11576 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11577 return -EINVAL;
11578 new_triggers.any = true;
11579 }
11580
11581 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11582 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11583 return -EINVAL;
11584 new_triggers.disconnect = true;
11585 regular = true;
11586 }
11587
11588 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11589 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11590 return -EINVAL;
11591 new_triggers.magic_pkt = true;
11592 regular = true;
11593 }
11594
11595 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11596 return -EINVAL;
11597
11598 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11599 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11600 return -EINVAL;
11601 new_triggers.gtk_rekey_failure = true;
11602 regular = true;
11603 }
11604
11605 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11606 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11607 return -EINVAL;
11608 new_triggers.eap_identity_req = true;
11609 regular = true;
11610 }
11611
11612 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11613 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11614 return -EINVAL;
11615 new_triggers.four_way_handshake = true;
11616 regular = true;
11617 }
11618
11619 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11620 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11621 return -EINVAL;
11622 new_triggers.rfkill_release = true;
11623 regular = true;
11624 }
11625
11626 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11627 struct nlattr *pat;
11628 int n_patterns = 0;
11629 int rem, pat_len, mask_len, pkt_offset;
11630 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11631
11632 regular = true;
11633
11634 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11635 rem)
11636 n_patterns++;
11637 if (n_patterns > wowlan->n_patterns)
11638 return -EINVAL;
11639
11640 new_triggers.patterns = kcalloc(n_patterns,
11641 sizeof(new_triggers.patterns[0]),
11642 GFP_KERNEL);
11643 if (!new_triggers.patterns)
11644 return -ENOMEM;
11645
11646 new_triggers.n_patterns = n_patterns;
11647 i = 0;
11648
11649 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11650 rem) {
11651 u8 *mask_pat;
11652
11653 err = nla_parse_nested_deprecated(pat_tb,
11654 MAX_NL80211_PKTPAT,
11655 pat,
11656 nl80211_packet_pattern_policy,
11657 info->extack);
11658 if (err)
11659 goto error;
11660
11661 err = -EINVAL;
11662 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11663 !pat_tb[NL80211_PKTPAT_PATTERN])
11664 goto error;
11665 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11666 mask_len = DIV_ROUND_UP(pat_len, 8);
11667 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11668 goto error;
11669 if (pat_len > wowlan->pattern_max_len ||
11670 pat_len < wowlan->pattern_min_len)
11671 goto error;
11672
11673 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11674 pkt_offset = 0;
11675 else
11676 pkt_offset = nla_get_u32(
11677 pat_tb[NL80211_PKTPAT_OFFSET]);
11678 if (pkt_offset > wowlan->max_pkt_offset)
11679 goto error;
11680 new_triggers.patterns[i].pkt_offset = pkt_offset;
11681
11682 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11683 if (!mask_pat) {
11684 err = -ENOMEM;
11685 goto error;
11686 }
11687 new_triggers.patterns[i].mask = mask_pat;
11688 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11689 mask_len);
11690 mask_pat += mask_len;
11691 new_triggers.patterns[i].pattern = mask_pat;
11692 new_triggers.patterns[i].pattern_len = pat_len;
11693 memcpy(mask_pat,
11694 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11695 pat_len);
11696 i++;
11697 }
11698 }
11699
11700 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11701 regular = true;
11702 err = nl80211_parse_wowlan_tcp(
11703 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11704 &new_triggers);
11705 if (err)
11706 goto error;
11707 }
11708
11709 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11710 regular = true;
11711 err = nl80211_parse_wowlan_nd(
11712 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11713 &new_triggers);
11714 if (err)
11715 goto error;
11716 }
11717
11718 /* The 'any' trigger means the device continues operating more or less
11719 * as in its normal operation mode and wakes up the host on most of the
11720 * normal interrupts (like packet RX, ...)
11721 * It therefore makes little sense to combine with the more constrained
11722 * wakeup trigger modes.
11723 */
11724 if (new_triggers.any && regular) {
11725 err = -EINVAL;
11726 goto error;
11727 }
11728
11729 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11730 if (!ntrig) {
11731 err = -ENOMEM;
11732 goto error;
11733 }
11734 cfg80211_rdev_free_wowlan(rdev);
11735 rdev->wiphy.wowlan_config = ntrig;
11736
11737 set_wakeup:
11738 if (rdev->ops->set_wakeup &&
11739 prev_enabled != !!rdev->wiphy.wowlan_config)
11740 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11741
11742 return 0;
11743 error:
11744 for (i = 0; i < new_triggers.n_patterns; i++)
11745 kfree(new_triggers.patterns[i].mask);
11746 kfree(new_triggers.patterns);
11747 if (new_triggers.tcp && new_triggers.tcp->sock)
11748 sock_release(new_triggers.tcp->sock);
11749 kfree(new_triggers.tcp);
11750 kfree(new_triggers.nd_config);
11751 return err;
11752 }
11753 #endif
11754
nl80211_send_coalesce_rules(struct sk_buff * msg,struct cfg80211_registered_device * rdev)11755 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11756 struct cfg80211_registered_device *rdev)
11757 {
11758 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11759 int i, j, pat_len;
11760 struct cfg80211_coalesce_rules *rule;
11761
11762 if (!rdev->coalesce->n_rules)
11763 return 0;
11764
11765 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11766 if (!nl_rules)
11767 return -ENOBUFS;
11768
11769 for (i = 0; i < rdev->coalesce->n_rules; i++) {
11770 nl_rule = nla_nest_start_noflag(msg, i + 1);
11771 if (!nl_rule)
11772 return -ENOBUFS;
11773
11774 rule = &rdev->coalesce->rules[i];
11775 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11776 rule->delay))
11777 return -ENOBUFS;
11778
11779 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11780 rule->condition))
11781 return -ENOBUFS;
11782
11783 nl_pats = nla_nest_start_noflag(msg,
11784 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11785 if (!nl_pats)
11786 return -ENOBUFS;
11787
11788 for (j = 0; j < rule->n_patterns; j++) {
11789 nl_pat = nla_nest_start_noflag(msg, j + 1);
11790 if (!nl_pat)
11791 return -ENOBUFS;
11792 pat_len = rule->patterns[j].pattern_len;
11793 if (nla_put(msg, NL80211_PKTPAT_MASK,
11794 DIV_ROUND_UP(pat_len, 8),
11795 rule->patterns[j].mask) ||
11796 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11797 rule->patterns[j].pattern) ||
11798 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11799 rule->patterns[j].pkt_offset))
11800 return -ENOBUFS;
11801 nla_nest_end(msg, nl_pat);
11802 }
11803 nla_nest_end(msg, nl_pats);
11804 nla_nest_end(msg, nl_rule);
11805 }
11806 nla_nest_end(msg, nl_rules);
11807
11808 return 0;
11809 }
11810
nl80211_get_coalesce(struct sk_buff * skb,struct genl_info * info)11811 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11812 {
11813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11814 struct sk_buff *msg;
11815 void *hdr;
11816
11817 if (!rdev->wiphy.coalesce)
11818 return -EOPNOTSUPP;
11819
11820 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11821 if (!msg)
11822 return -ENOMEM;
11823
11824 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11825 NL80211_CMD_GET_COALESCE);
11826 if (!hdr)
11827 goto nla_put_failure;
11828
11829 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11830 goto nla_put_failure;
11831
11832 genlmsg_end(msg, hdr);
11833 return genlmsg_reply(msg, info);
11834
11835 nla_put_failure:
11836 nlmsg_free(msg);
11837 return -ENOBUFS;
11838 }
11839
cfg80211_rdev_free_coalesce(struct cfg80211_registered_device * rdev)11840 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11841 {
11842 struct cfg80211_coalesce *coalesce = rdev->coalesce;
11843 int i, j;
11844 struct cfg80211_coalesce_rules *rule;
11845
11846 if (!coalesce)
11847 return;
11848
11849 for (i = 0; i < coalesce->n_rules; i++) {
11850 rule = &coalesce->rules[i];
11851 for (j = 0; j < rule->n_patterns; j++)
11852 kfree(rule->patterns[j].mask);
11853 kfree(rule->patterns);
11854 }
11855 kfree(coalesce->rules);
11856 kfree(coalesce);
11857 rdev->coalesce = NULL;
11858 }
11859
nl80211_parse_coalesce_rule(struct cfg80211_registered_device * rdev,struct nlattr * rule,struct cfg80211_coalesce_rules * new_rule)11860 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11861 struct nlattr *rule,
11862 struct cfg80211_coalesce_rules *new_rule)
11863 {
11864 int err, i;
11865 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11866 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11867 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11868 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11869
11870 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11871 rule, nl80211_coalesce_policy, NULL);
11872 if (err)
11873 return err;
11874
11875 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11876 new_rule->delay =
11877 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11878 if (new_rule->delay > coalesce->max_delay)
11879 return -EINVAL;
11880
11881 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11882 new_rule->condition =
11883 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11884
11885 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11886 return -EINVAL;
11887
11888 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11889 rem)
11890 n_patterns++;
11891 if (n_patterns > coalesce->n_patterns)
11892 return -EINVAL;
11893
11894 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11895 GFP_KERNEL);
11896 if (!new_rule->patterns)
11897 return -ENOMEM;
11898
11899 new_rule->n_patterns = n_patterns;
11900 i = 0;
11901
11902 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11903 rem) {
11904 u8 *mask_pat;
11905
11906 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11907 pat,
11908 nl80211_packet_pattern_policy,
11909 NULL);
11910 if (err)
11911 return err;
11912
11913 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11914 !pat_tb[NL80211_PKTPAT_PATTERN])
11915 return -EINVAL;
11916 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11917 mask_len = DIV_ROUND_UP(pat_len, 8);
11918 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11919 return -EINVAL;
11920 if (pat_len > coalesce->pattern_max_len ||
11921 pat_len < coalesce->pattern_min_len)
11922 return -EINVAL;
11923
11924 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11925 pkt_offset = 0;
11926 else
11927 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11928 if (pkt_offset > coalesce->max_pkt_offset)
11929 return -EINVAL;
11930 new_rule->patterns[i].pkt_offset = pkt_offset;
11931
11932 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11933 if (!mask_pat)
11934 return -ENOMEM;
11935
11936 new_rule->patterns[i].mask = mask_pat;
11937 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11938 mask_len);
11939
11940 mask_pat += mask_len;
11941 new_rule->patterns[i].pattern = mask_pat;
11942 new_rule->patterns[i].pattern_len = pat_len;
11943 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11944 pat_len);
11945 i++;
11946 }
11947
11948 return 0;
11949 }
11950
nl80211_set_coalesce(struct sk_buff * skb,struct genl_info * info)11951 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11952 {
11953 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11954 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11955 struct cfg80211_coalesce new_coalesce = {};
11956 struct cfg80211_coalesce *n_coalesce;
11957 int err, rem_rule, n_rules = 0, i, j;
11958 struct nlattr *rule;
11959 struct cfg80211_coalesce_rules *tmp_rule;
11960
11961 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11962 return -EOPNOTSUPP;
11963
11964 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11965 cfg80211_rdev_free_coalesce(rdev);
11966 rdev_set_coalesce(rdev, NULL);
11967 return 0;
11968 }
11969
11970 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11971 rem_rule)
11972 n_rules++;
11973 if (n_rules > coalesce->n_rules)
11974 return -EINVAL;
11975
11976 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11977 GFP_KERNEL);
11978 if (!new_coalesce.rules)
11979 return -ENOMEM;
11980
11981 new_coalesce.n_rules = n_rules;
11982 i = 0;
11983
11984 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11985 rem_rule) {
11986 err = nl80211_parse_coalesce_rule(rdev, rule,
11987 &new_coalesce.rules[i]);
11988 if (err)
11989 goto error;
11990
11991 i++;
11992 }
11993
11994 err = rdev_set_coalesce(rdev, &new_coalesce);
11995 if (err)
11996 goto error;
11997
11998 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
11999 if (!n_coalesce) {
12000 err = -ENOMEM;
12001 goto error;
12002 }
12003 cfg80211_rdev_free_coalesce(rdev);
12004 rdev->coalesce = n_coalesce;
12005
12006 return 0;
12007 error:
12008 for (i = 0; i < new_coalesce.n_rules; i++) {
12009 tmp_rule = &new_coalesce.rules[i];
12010 for (j = 0; j < tmp_rule->n_patterns; j++)
12011 kfree(tmp_rule->patterns[j].mask);
12012 kfree(tmp_rule->patterns);
12013 }
12014 kfree(new_coalesce.rules);
12015
12016 return err;
12017 }
12018
nl80211_set_rekey_data(struct sk_buff * skb,struct genl_info * info)12019 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12020 {
12021 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12022 struct net_device *dev = info->user_ptr[1];
12023 struct wireless_dev *wdev = dev->ieee80211_ptr;
12024 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12025 struct cfg80211_gtk_rekey_data rekey_data;
12026 int err;
12027
12028 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12029 return -EINVAL;
12030
12031 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12032 info->attrs[NL80211_ATTR_REKEY_DATA],
12033 nl80211_rekey_policy, info->extack);
12034 if (err)
12035 return err;
12036
12037 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12038 !tb[NL80211_REKEY_DATA_KCK])
12039 return -EINVAL;
12040 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12041 return -ERANGE;
12042 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12043 return -ERANGE;
12044 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12045 return -ERANGE;
12046
12047 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12048 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12049 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12050
12051 wdev_lock(wdev);
12052 if (!wdev->current_bss) {
12053 err = -ENOTCONN;
12054 goto out;
12055 }
12056
12057 if (!rdev->ops->set_rekey_data) {
12058 err = -EOPNOTSUPP;
12059 goto out;
12060 }
12061
12062 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12063 out:
12064 wdev_unlock(wdev);
12065 return err;
12066 }
12067
nl80211_register_unexpected_frame(struct sk_buff * skb,struct genl_info * info)12068 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12069 struct genl_info *info)
12070 {
12071 struct net_device *dev = info->user_ptr[1];
12072 struct wireless_dev *wdev = dev->ieee80211_ptr;
12073
12074 if (wdev->iftype != NL80211_IFTYPE_AP &&
12075 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12076 return -EINVAL;
12077
12078 if (wdev->ap_unexpected_nlportid)
12079 return -EBUSY;
12080
12081 wdev->ap_unexpected_nlportid = info->snd_portid;
12082 return 0;
12083 }
12084
nl80211_probe_client(struct sk_buff * skb,struct genl_info * info)12085 static int nl80211_probe_client(struct sk_buff *skb,
12086 struct genl_info *info)
12087 {
12088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12089 struct net_device *dev = info->user_ptr[1];
12090 struct wireless_dev *wdev = dev->ieee80211_ptr;
12091 struct sk_buff *msg;
12092 void *hdr;
12093 const u8 *addr;
12094 u64 cookie;
12095 int err;
12096
12097 if (wdev->iftype != NL80211_IFTYPE_AP &&
12098 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12099 return -EOPNOTSUPP;
12100
12101 if (!info->attrs[NL80211_ATTR_MAC])
12102 return -EINVAL;
12103
12104 if (!rdev->ops->probe_client)
12105 return -EOPNOTSUPP;
12106
12107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12108 if (!msg)
12109 return -ENOMEM;
12110
12111 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12112 NL80211_CMD_PROBE_CLIENT);
12113 if (!hdr) {
12114 err = -ENOBUFS;
12115 goto free_msg;
12116 }
12117
12118 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12119
12120 err = rdev_probe_client(rdev, dev, addr, &cookie);
12121 if (err)
12122 goto free_msg;
12123
12124 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12125 NL80211_ATTR_PAD))
12126 goto nla_put_failure;
12127
12128 genlmsg_end(msg, hdr);
12129
12130 return genlmsg_reply(msg, info);
12131
12132 nla_put_failure:
12133 err = -ENOBUFS;
12134 free_msg:
12135 nlmsg_free(msg);
12136 return err;
12137 }
12138
nl80211_register_beacons(struct sk_buff * skb,struct genl_info * info)12139 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12140 {
12141 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12142 struct cfg80211_beacon_registration *reg, *nreg;
12143 int rv;
12144
12145 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12146 return -EOPNOTSUPP;
12147
12148 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12149 if (!nreg)
12150 return -ENOMEM;
12151
12152 /* First, check if already registered. */
12153 spin_lock_bh(&rdev->beacon_registrations_lock);
12154 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12155 if (reg->nlportid == info->snd_portid) {
12156 rv = -EALREADY;
12157 goto out_err;
12158 }
12159 }
12160 /* Add it to the list */
12161 nreg->nlportid = info->snd_portid;
12162 list_add(&nreg->list, &rdev->beacon_registrations);
12163
12164 spin_unlock_bh(&rdev->beacon_registrations_lock);
12165
12166 return 0;
12167 out_err:
12168 spin_unlock_bh(&rdev->beacon_registrations_lock);
12169 kfree(nreg);
12170 return rv;
12171 }
12172
nl80211_start_p2p_device(struct sk_buff * skb,struct genl_info * info)12173 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12174 {
12175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12176 struct wireless_dev *wdev = info->user_ptr[1];
12177 int err;
12178
12179 if (!rdev->ops->start_p2p_device)
12180 return -EOPNOTSUPP;
12181
12182 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12183 return -EOPNOTSUPP;
12184
12185 if (wdev_running(wdev))
12186 return 0;
12187
12188 if (rfkill_blocked(rdev->rfkill))
12189 return -ERFKILL;
12190
12191 err = rdev_start_p2p_device(rdev, wdev);
12192 if (err)
12193 return err;
12194
12195 wdev->is_running = true;
12196 rdev->opencount++;
12197
12198 return 0;
12199 }
12200
nl80211_stop_p2p_device(struct sk_buff * skb,struct genl_info * info)12201 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12202 {
12203 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12204 struct wireless_dev *wdev = info->user_ptr[1];
12205
12206 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12207 return -EOPNOTSUPP;
12208
12209 if (!rdev->ops->stop_p2p_device)
12210 return -EOPNOTSUPP;
12211
12212 cfg80211_stop_p2p_device(rdev, wdev);
12213
12214 return 0;
12215 }
12216
nl80211_start_nan(struct sk_buff * skb,struct genl_info * info)12217 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12218 {
12219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12220 struct wireless_dev *wdev = info->user_ptr[1];
12221 struct cfg80211_nan_conf conf = {};
12222 int err;
12223
12224 if (wdev->iftype != NL80211_IFTYPE_NAN)
12225 return -EOPNOTSUPP;
12226
12227 if (wdev_running(wdev))
12228 return -EEXIST;
12229
12230 if (rfkill_blocked(rdev->rfkill))
12231 return -ERFKILL;
12232
12233 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12234 return -EINVAL;
12235
12236 conf.master_pref =
12237 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12238
12239 if (info->attrs[NL80211_ATTR_BANDS]) {
12240 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12241
12242 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12243 return -EOPNOTSUPP;
12244
12245 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12246 return -EINVAL;
12247
12248 conf.bands = bands;
12249 }
12250
12251 err = rdev_start_nan(rdev, wdev, &conf);
12252 if (err)
12253 return err;
12254
12255 wdev->is_running = true;
12256 rdev->opencount++;
12257
12258 return 0;
12259 }
12260
nl80211_stop_nan(struct sk_buff * skb,struct genl_info * info)12261 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12262 {
12263 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12264 struct wireless_dev *wdev = info->user_ptr[1];
12265
12266 if (wdev->iftype != NL80211_IFTYPE_NAN)
12267 return -EOPNOTSUPP;
12268
12269 cfg80211_stop_nan(rdev, wdev);
12270
12271 return 0;
12272 }
12273
validate_nan_filter(struct nlattr * filter_attr)12274 static int validate_nan_filter(struct nlattr *filter_attr)
12275 {
12276 struct nlattr *attr;
12277 int len = 0, n_entries = 0, rem;
12278
12279 nla_for_each_nested(attr, filter_attr, rem) {
12280 len += nla_len(attr);
12281 n_entries++;
12282 }
12283
12284 if (len >= U8_MAX)
12285 return -EINVAL;
12286
12287 return n_entries;
12288 }
12289
handle_nan_filter(struct nlattr * attr_filter,struct cfg80211_nan_func * func,bool tx)12290 static int handle_nan_filter(struct nlattr *attr_filter,
12291 struct cfg80211_nan_func *func,
12292 bool tx)
12293 {
12294 struct nlattr *attr;
12295 int n_entries, rem, i;
12296 struct cfg80211_nan_func_filter *filter;
12297
12298 n_entries = validate_nan_filter(attr_filter);
12299 if (n_entries < 0)
12300 return n_entries;
12301
12302 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12303
12304 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12305 if (!filter)
12306 return -ENOMEM;
12307
12308 i = 0;
12309 nla_for_each_nested(attr, attr_filter, rem) {
12310 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12311 filter[i].len = nla_len(attr);
12312 i++;
12313 }
12314 if (tx) {
12315 func->num_tx_filters = n_entries;
12316 func->tx_filters = filter;
12317 } else {
12318 func->num_rx_filters = n_entries;
12319 func->rx_filters = filter;
12320 }
12321
12322 return 0;
12323 }
12324
nl80211_nan_add_func(struct sk_buff * skb,struct genl_info * info)12325 static int nl80211_nan_add_func(struct sk_buff *skb,
12326 struct genl_info *info)
12327 {
12328 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12329 struct wireless_dev *wdev = info->user_ptr[1];
12330 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12331 struct cfg80211_nan_func *func;
12332 struct sk_buff *msg = NULL;
12333 void *hdr = NULL;
12334 int err = 0;
12335
12336 if (wdev->iftype != NL80211_IFTYPE_NAN)
12337 return -EOPNOTSUPP;
12338
12339 if (!wdev_running(wdev))
12340 return -ENOTCONN;
12341
12342 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12343 return -EINVAL;
12344
12345 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12346 info->attrs[NL80211_ATTR_NAN_FUNC],
12347 nl80211_nan_func_policy,
12348 info->extack);
12349 if (err)
12350 return err;
12351
12352 func = kzalloc(sizeof(*func), GFP_KERNEL);
12353 if (!func)
12354 return -ENOMEM;
12355
12356 func->cookie = cfg80211_assign_cookie(rdev);
12357
12358 if (!tb[NL80211_NAN_FUNC_TYPE] ||
12359 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12360 err = -EINVAL;
12361 goto out;
12362 }
12363
12364
12365 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12366
12367 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12368 err = -EINVAL;
12369 goto out;
12370 }
12371
12372 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12373 sizeof(func->service_id));
12374
12375 func->close_range =
12376 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12377
12378 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12379 func->serv_spec_info_len =
12380 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12381 func->serv_spec_info =
12382 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12383 func->serv_spec_info_len,
12384 GFP_KERNEL);
12385 if (!func->serv_spec_info) {
12386 err = -ENOMEM;
12387 goto out;
12388 }
12389 }
12390
12391 if (tb[NL80211_NAN_FUNC_TTL])
12392 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12393
12394 switch (func->type) {
12395 case NL80211_NAN_FUNC_PUBLISH:
12396 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12397 err = -EINVAL;
12398 goto out;
12399 }
12400
12401 func->publish_type =
12402 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12403 func->publish_bcast =
12404 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12405
12406 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12407 func->publish_bcast) {
12408 err = -EINVAL;
12409 goto out;
12410 }
12411 break;
12412 case NL80211_NAN_FUNC_SUBSCRIBE:
12413 func->subscribe_active =
12414 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12415 break;
12416 case NL80211_NAN_FUNC_FOLLOW_UP:
12417 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12418 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12419 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12420 err = -EINVAL;
12421 goto out;
12422 }
12423
12424 func->followup_id =
12425 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12426 func->followup_reqid =
12427 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12428 memcpy(func->followup_dest.addr,
12429 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12430 sizeof(func->followup_dest.addr));
12431 if (func->ttl) {
12432 err = -EINVAL;
12433 goto out;
12434 }
12435 break;
12436 default:
12437 err = -EINVAL;
12438 goto out;
12439 }
12440
12441 if (tb[NL80211_NAN_FUNC_SRF]) {
12442 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12443
12444 err = nla_parse_nested_deprecated(srf_tb,
12445 NL80211_NAN_SRF_ATTR_MAX,
12446 tb[NL80211_NAN_FUNC_SRF],
12447 nl80211_nan_srf_policy,
12448 info->extack);
12449 if (err)
12450 goto out;
12451
12452 func->srf_include =
12453 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12454
12455 if (srf_tb[NL80211_NAN_SRF_BF]) {
12456 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12457 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12458 err = -EINVAL;
12459 goto out;
12460 }
12461
12462 func->srf_bf_len =
12463 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12464 func->srf_bf =
12465 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12466 func->srf_bf_len, GFP_KERNEL);
12467 if (!func->srf_bf) {
12468 err = -ENOMEM;
12469 goto out;
12470 }
12471
12472 func->srf_bf_idx =
12473 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12474 } else {
12475 struct nlattr *attr, *mac_attr =
12476 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12477 int n_entries, rem, i = 0;
12478
12479 if (!mac_attr) {
12480 err = -EINVAL;
12481 goto out;
12482 }
12483
12484 n_entries = validate_acl_mac_addrs(mac_attr);
12485 if (n_entries <= 0) {
12486 err = -EINVAL;
12487 goto out;
12488 }
12489
12490 func->srf_num_macs = n_entries;
12491 func->srf_macs =
12492 kcalloc(n_entries, sizeof(*func->srf_macs),
12493 GFP_KERNEL);
12494 if (!func->srf_macs) {
12495 err = -ENOMEM;
12496 goto out;
12497 }
12498
12499 nla_for_each_nested(attr, mac_attr, rem)
12500 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12501 sizeof(*func->srf_macs));
12502 }
12503 }
12504
12505 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12506 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12507 func, true);
12508 if (err)
12509 goto out;
12510 }
12511
12512 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12513 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12514 func, false);
12515 if (err)
12516 goto out;
12517 }
12518
12519 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12520 if (!msg) {
12521 err = -ENOMEM;
12522 goto out;
12523 }
12524
12525 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12526 NL80211_CMD_ADD_NAN_FUNCTION);
12527 /* This can't really happen - we just allocated 4KB */
12528 if (WARN_ON(!hdr)) {
12529 err = -ENOMEM;
12530 goto out;
12531 }
12532
12533 err = rdev_add_nan_func(rdev, wdev, func);
12534 out:
12535 if (err < 0) {
12536 cfg80211_free_nan_func(func);
12537 nlmsg_free(msg);
12538 return err;
12539 }
12540
12541 /* propagate the instance id and cookie to userspace */
12542 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12543 NL80211_ATTR_PAD))
12544 goto nla_put_failure;
12545
12546 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12547 if (!func_attr)
12548 goto nla_put_failure;
12549
12550 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12551 func->instance_id))
12552 goto nla_put_failure;
12553
12554 nla_nest_end(msg, func_attr);
12555
12556 genlmsg_end(msg, hdr);
12557 return genlmsg_reply(msg, info);
12558
12559 nla_put_failure:
12560 nlmsg_free(msg);
12561 return -ENOBUFS;
12562 }
12563
nl80211_nan_del_func(struct sk_buff * skb,struct genl_info * info)12564 static int nl80211_nan_del_func(struct sk_buff *skb,
12565 struct genl_info *info)
12566 {
12567 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12568 struct wireless_dev *wdev = info->user_ptr[1];
12569 u64 cookie;
12570
12571 if (wdev->iftype != NL80211_IFTYPE_NAN)
12572 return -EOPNOTSUPP;
12573
12574 if (!wdev_running(wdev))
12575 return -ENOTCONN;
12576
12577 if (!info->attrs[NL80211_ATTR_COOKIE])
12578 return -EINVAL;
12579
12580 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12581
12582 rdev_del_nan_func(rdev, wdev, cookie);
12583
12584 return 0;
12585 }
12586
nl80211_nan_change_config(struct sk_buff * skb,struct genl_info * info)12587 static int nl80211_nan_change_config(struct sk_buff *skb,
12588 struct genl_info *info)
12589 {
12590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12591 struct wireless_dev *wdev = info->user_ptr[1];
12592 struct cfg80211_nan_conf conf = {};
12593 u32 changed = 0;
12594
12595 if (wdev->iftype != NL80211_IFTYPE_NAN)
12596 return -EOPNOTSUPP;
12597
12598 if (!wdev_running(wdev))
12599 return -ENOTCONN;
12600
12601 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12602 conf.master_pref =
12603 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12604 if (conf.master_pref <= 1 || conf.master_pref == 255)
12605 return -EINVAL;
12606
12607 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12608 }
12609
12610 if (info->attrs[NL80211_ATTR_BANDS]) {
12611 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12612
12613 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12614 return -EOPNOTSUPP;
12615
12616 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12617 return -EINVAL;
12618
12619 conf.bands = bands;
12620 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12621 }
12622
12623 if (!changed)
12624 return -EINVAL;
12625
12626 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12627 }
12628
cfg80211_nan_match(struct wireless_dev * wdev,struct cfg80211_nan_match_params * match,gfp_t gfp)12629 void cfg80211_nan_match(struct wireless_dev *wdev,
12630 struct cfg80211_nan_match_params *match, gfp_t gfp)
12631 {
12632 struct wiphy *wiphy = wdev->wiphy;
12633 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12634 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12635 struct sk_buff *msg;
12636 void *hdr;
12637
12638 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12639 return;
12640
12641 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12642 if (!msg)
12643 return;
12644
12645 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12646 if (!hdr) {
12647 nlmsg_free(msg);
12648 return;
12649 }
12650
12651 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12652 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12653 wdev->netdev->ifindex)) ||
12654 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12655 NL80211_ATTR_PAD))
12656 goto nla_put_failure;
12657
12658 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12659 NL80211_ATTR_PAD) ||
12660 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12661 goto nla_put_failure;
12662
12663 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12664 if (!match_attr)
12665 goto nla_put_failure;
12666
12667 local_func_attr = nla_nest_start_noflag(msg,
12668 NL80211_NAN_MATCH_FUNC_LOCAL);
12669 if (!local_func_attr)
12670 goto nla_put_failure;
12671
12672 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12673 goto nla_put_failure;
12674
12675 nla_nest_end(msg, local_func_attr);
12676
12677 peer_func_attr = nla_nest_start_noflag(msg,
12678 NL80211_NAN_MATCH_FUNC_PEER);
12679 if (!peer_func_attr)
12680 goto nla_put_failure;
12681
12682 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12683 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12684 goto nla_put_failure;
12685
12686 if (match->info && match->info_len &&
12687 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12688 match->info))
12689 goto nla_put_failure;
12690
12691 nla_nest_end(msg, peer_func_attr);
12692 nla_nest_end(msg, match_attr);
12693 genlmsg_end(msg, hdr);
12694
12695 if (!wdev->owner_nlportid)
12696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12697 msg, 0, NL80211_MCGRP_NAN, gfp);
12698 else
12699 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12700 wdev->owner_nlportid);
12701
12702 return;
12703
12704 nla_put_failure:
12705 nlmsg_free(msg);
12706 }
12707 EXPORT_SYMBOL(cfg80211_nan_match);
12708
cfg80211_nan_func_terminated(struct wireless_dev * wdev,u8 inst_id,enum nl80211_nan_func_term_reason reason,u64 cookie,gfp_t gfp)12709 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12710 u8 inst_id,
12711 enum nl80211_nan_func_term_reason reason,
12712 u64 cookie, gfp_t gfp)
12713 {
12714 struct wiphy *wiphy = wdev->wiphy;
12715 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12716 struct sk_buff *msg;
12717 struct nlattr *func_attr;
12718 void *hdr;
12719
12720 if (WARN_ON(!inst_id))
12721 return;
12722
12723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12724 if (!msg)
12725 return;
12726
12727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12728 if (!hdr) {
12729 nlmsg_free(msg);
12730 return;
12731 }
12732
12733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12734 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12735 wdev->netdev->ifindex)) ||
12736 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12737 NL80211_ATTR_PAD))
12738 goto nla_put_failure;
12739
12740 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12741 NL80211_ATTR_PAD))
12742 goto nla_put_failure;
12743
12744 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12745 if (!func_attr)
12746 goto nla_put_failure;
12747
12748 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12749 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12750 goto nla_put_failure;
12751
12752 nla_nest_end(msg, func_attr);
12753 genlmsg_end(msg, hdr);
12754
12755 if (!wdev->owner_nlportid)
12756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12757 msg, 0, NL80211_MCGRP_NAN, gfp);
12758 else
12759 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12760 wdev->owner_nlportid);
12761
12762 return;
12763
12764 nla_put_failure:
12765 nlmsg_free(msg);
12766 }
12767 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12768
nl80211_get_protocol_features(struct sk_buff * skb,struct genl_info * info)12769 static int nl80211_get_protocol_features(struct sk_buff *skb,
12770 struct genl_info *info)
12771 {
12772 void *hdr;
12773 struct sk_buff *msg;
12774
12775 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12776 if (!msg)
12777 return -ENOMEM;
12778
12779 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12780 NL80211_CMD_GET_PROTOCOL_FEATURES);
12781 if (!hdr)
12782 goto nla_put_failure;
12783
12784 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12785 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12786 goto nla_put_failure;
12787
12788 genlmsg_end(msg, hdr);
12789 return genlmsg_reply(msg, info);
12790
12791 nla_put_failure:
12792 kfree_skb(msg);
12793 return -ENOBUFS;
12794 }
12795
nl80211_update_ft_ies(struct sk_buff * skb,struct genl_info * info)12796 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12797 {
12798 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12799 struct cfg80211_update_ft_ies_params ft_params;
12800 struct net_device *dev = info->user_ptr[1];
12801
12802 if (!rdev->ops->update_ft_ies)
12803 return -EOPNOTSUPP;
12804
12805 if (!info->attrs[NL80211_ATTR_MDID] ||
12806 !info->attrs[NL80211_ATTR_IE])
12807 return -EINVAL;
12808
12809 memset(&ft_params, 0, sizeof(ft_params));
12810 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12811 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12812 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12813
12814 return rdev_update_ft_ies(rdev, dev, &ft_params);
12815 }
12816
nl80211_crit_protocol_start(struct sk_buff * skb,struct genl_info * info)12817 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12818 struct genl_info *info)
12819 {
12820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12821 struct wireless_dev *wdev = info->user_ptr[1];
12822 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12823 u16 duration;
12824 int ret;
12825
12826 if (!rdev->ops->crit_proto_start)
12827 return -EOPNOTSUPP;
12828
12829 if (WARN_ON(!rdev->ops->crit_proto_stop))
12830 return -EINVAL;
12831
12832 if (rdev->crit_proto_nlportid)
12833 return -EBUSY;
12834
12835 /* determine protocol if provided */
12836 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12837 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12838
12839 if (proto >= NUM_NL80211_CRIT_PROTO)
12840 return -EINVAL;
12841
12842 /* timeout must be provided */
12843 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12844 return -EINVAL;
12845
12846 duration =
12847 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12848
12849 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12850 return -ERANGE;
12851
12852 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12853 if (!ret)
12854 rdev->crit_proto_nlportid = info->snd_portid;
12855
12856 return ret;
12857 }
12858
nl80211_crit_protocol_stop(struct sk_buff * skb,struct genl_info * info)12859 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12860 struct genl_info *info)
12861 {
12862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12863 struct wireless_dev *wdev = info->user_ptr[1];
12864
12865 if (!rdev->ops->crit_proto_stop)
12866 return -EOPNOTSUPP;
12867
12868 if (rdev->crit_proto_nlportid) {
12869 rdev->crit_proto_nlportid = 0;
12870 rdev_crit_proto_stop(rdev, wdev);
12871 }
12872 return 0;
12873 }
12874
nl80211_vendor_check_policy(const struct wiphy_vendor_command * vcmd,struct nlattr * attr,struct netlink_ext_ack * extack)12875 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12876 struct nlattr *attr,
12877 struct netlink_ext_ack *extack)
12878 {
12879 if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12880 if (attr->nla_type & NLA_F_NESTED) {
12881 NL_SET_ERR_MSG_ATTR(extack, attr,
12882 "unexpected nested data");
12883 return -EINVAL;
12884 }
12885
12886 return 0;
12887 }
12888
12889 if (!(attr->nla_type & NLA_F_NESTED)) {
12890 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12891 return -EINVAL;
12892 }
12893
12894 return nl80211_validate_nested(attr, vcmd->maxattr, vcmd->policy,
12895 extack);
12896 }
12897
nl80211_vendor_cmd(struct sk_buff * skb,struct genl_info * info)12898 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12899 {
12900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12901 struct wireless_dev *wdev =
12902 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12903 int i, err;
12904 u32 vid, subcmd;
12905
12906 if (!rdev->wiphy.vendor_commands)
12907 return -EOPNOTSUPP;
12908
12909 if (IS_ERR(wdev)) {
12910 err = PTR_ERR(wdev);
12911 if (err != -EINVAL)
12912 return err;
12913 wdev = NULL;
12914 } else if (wdev->wiphy != &rdev->wiphy) {
12915 return -EINVAL;
12916 }
12917
12918 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12919 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12920 return -EINVAL;
12921
12922 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12923 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12924 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12925 const struct wiphy_vendor_command *vcmd;
12926 void *data = NULL;
12927 int len = 0;
12928
12929 vcmd = &rdev->wiphy.vendor_commands[i];
12930
12931 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12932 continue;
12933
12934 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12935 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12936 if (!wdev)
12937 return -EINVAL;
12938 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12939 !wdev->netdev)
12940 return -EINVAL;
12941
12942 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12943 if (!wdev_running(wdev))
12944 return -ENETDOWN;
12945 }
12946
12947 if (!vcmd->doit)
12948 return -EOPNOTSUPP;
12949 } else {
12950 wdev = NULL;
12951 }
12952
12953 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12954 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12955 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12956
12957 err = nl80211_vendor_check_policy(vcmd,
12958 info->attrs[NL80211_ATTR_VENDOR_DATA],
12959 info->extack);
12960 if (err)
12961 return err;
12962 }
12963
12964 rdev->cur_cmd_info = info;
12965 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12966 rdev->cur_cmd_info = NULL;
12967 return err;
12968 }
12969
12970 return -EOPNOTSUPP;
12971 }
12972
nl80211_prepare_vendor_dump(struct sk_buff * skb,struct netlink_callback * cb,struct cfg80211_registered_device ** rdev,struct wireless_dev ** wdev)12973 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12974 struct netlink_callback *cb,
12975 struct cfg80211_registered_device **rdev,
12976 struct wireless_dev **wdev)
12977 {
12978 struct nlattr **attrbuf;
12979 u32 vid, subcmd;
12980 unsigned int i;
12981 int vcmd_idx = -1;
12982 int err;
12983 void *data = NULL;
12984 unsigned int data_len = 0;
12985
12986 if (cb->args[0]) {
12987 /* subtract the 1 again here */
12988 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
12989 struct wireless_dev *tmp;
12990
12991 if (!wiphy)
12992 return -ENODEV;
12993 *rdev = wiphy_to_rdev(wiphy);
12994 *wdev = NULL;
12995
12996 if (cb->args[1]) {
12997 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
12998 if (tmp->identifier == cb->args[1] - 1) {
12999 *wdev = tmp;
13000 break;
13001 }
13002 }
13003 }
13004
13005 /* keep rtnl locked in successful case */
13006 return 0;
13007 }
13008
13009 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13010 if (!attrbuf)
13011 return -ENOMEM;
13012
13013 err = nlmsg_parse_deprecated(cb->nlh,
13014 GENL_HDRLEN + nl80211_fam.hdrsize,
13015 attrbuf, nl80211_fam.maxattr,
13016 nl80211_policy, NULL);
13017 if (err)
13018 goto out;
13019
13020 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13021 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13022 err = -EINVAL;
13023 goto out;
13024 }
13025
13026 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13027 if (IS_ERR(*wdev))
13028 *wdev = NULL;
13029
13030 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13031 if (IS_ERR(*rdev)) {
13032 err = PTR_ERR(*rdev);
13033 goto out;
13034 }
13035
13036 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13037 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13038
13039 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13040 const struct wiphy_vendor_command *vcmd;
13041
13042 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13043
13044 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13045 continue;
13046
13047 if (!vcmd->dumpit) {
13048 err = -EOPNOTSUPP;
13049 goto out;
13050 }
13051
13052 vcmd_idx = i;
13053 break;
13054 }
13055
13056 if (vcmd_idx < 0) {
13057 err = -EOPNOTSUPP;
13058 goto out;
13059 }
13060
13061 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13062 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13063 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13064
13065 err = nl80211_vendor_check_policy(
13066 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13067 attrbuf[NL80211_ATTR_VENDOR_DATA],
13068 cb->extack);
13069 if (err)
13070 goto out;
13071 }
13072
13073 /* 0 is the first index - add 1 to parse only once */
13074 cb->args[0] = (*rdev)->wiphy_idx + 1;
13075 /* add 1 to know if it was NULL */
13076 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13077 cb->args[2] = vcmd_idx;
13078 cb->args[3] = (unsigned long)data;
13079 cb->args[4] = data_len;
13080
13081 /* keep rtnl locked in successful case */
13082 err = 0;
13083 out:
13084 kfree(attrbuf);
13085 return err;
13086 }
13087
nl80211_vendor_cmd_dump(struct sk_buff * skb,struct netlink_callback * cb)13088 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13089 struct netlink_callback *cb)
13090 {
13091 struct cfg80211_registered_device *rdev;
13092 struct wireless_dev *wdev;
13093 unsigned int vcmd_idx;
13094 const struct wiphy_vendor_command *vcmd;
13095 void *data;
13096 int data_len;
13097 int err;
13098 struct nlattr *vendor_data;
13099
13100 rtnl_lock();
13101 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13102 if (err)
13103 goto out;
13104
13105 vcmd_idx = cb->args[2];
13106 data = (void *)cb->args[3];
13107 data_len = cb->args[4];
13108 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13109
13110 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13111 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13112 if (!wdev) {
13113 err = -EINVAL;
13114 goto out;
13115 }
13116 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13117 !wdev->netdev) {
13118 err = -EINVAL;
13119 goto out;
13120 }
13121
13122 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13123 if (!wdev_running(wdev)) {
13124 err = -ENETDOWN;
13125 goto out;
13126 }
13127 }
13128 }
13129
13130 while (1) {
13131 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13132 cb->nlh->nlmsg_seq, NLM_F_MULTI,
13133 NL80211_CMD_VENDOR);
13134 if (!hdr)
13135 break;
13136
13137 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13138 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13139 wdev_id(wdev),
13140 NL80211_ATTR_PAD))) {
13141 genlmsg_cancel(skb, hdr);
13142 break;
13143 }
13144
13145 vendor_data = nla_nest_start_noflag(skb,
13146 NL80211_ATTR_VENDOR_DATA);
13147 if (!vendor_data) {
13148 genlmsg_cancel(skb, hdr);
13149 break;
13150 }
13151
13152 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13153 (unsigned long *)&cb->args[5]);
13154 nla_nest_end(skb, vendor_data);
13155
13156 if (err == -ENOBUFS || err == -ENOENT) {
13157 genlmsg_cancel(skb, hdr);
13158 break;
13159 } else if (err) {
13160 genlmsg_cancel(skb, hdr);
13161 goto out;
13162 }
13163
13164 genlmsg_end(skb, hdr);
13165 }
13166
13167 err = skb->len;
13168 out:
13169 rtnl_unlock();
13170 return err;
13171 }
13172
__cfg80211_alloc_reply_skb(struct wiphy * wiphy,enum nl80211_commands cmd,enum nl80211_attrs attr,int approxlen)13173 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13174 enum nl80211_commands cmd,
13175 enum nl80211_attrs attr,
13176 int approxlen)
13177 {
13178 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13179
13180 if (WARN_ON(!rdev->cur_cmd_info))
13181 return NULL;
13182
13183 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13184 rdev->cur_cmd_info->snd_portid,
13185 rdev->cur_cmd_info->snd_seq,
13186 cmd, attr, NULL, GFP_KERNEL);
13187 }
13188 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13189
cfg80211_vendor_cmd_reply(struct sk_buff * skb)13190 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13191 {
13192 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13193 void *hdr = ((void **)skb->cb)[1];
13194 struct nlattr *data = ((void **)skb->cb)[2];
13195
13196 /* clear CB data for netlink core to own from now on */
13197 memset(skb->cb, 0, sizeof(skb->cb));
13198
13199 if (WARN_ON(!rdev->cur_cmd_info)) {
13200 kfree_skb(skb);
13201 return -EINVAL;
13202 }
13203
13204 nla_nest_end(skb, data);
13205 genlmsg_end(skb, hdr);
13206 return genlmsg_reply(skb, rdev->cur_cmd_info);
13207 }
13208 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13209
cfg80211_vendor_cmd_get_sender(struct wiphy * wiphy)13210 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13211 {
13212 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13213
13214 if (WARN_ON(!rdev->cur_cmd_info))
13215 return 0;
13216
13217 return rdev->cur_cmd_info->snd_portid;
13218 }
13219 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13220
nl80211_set_qos_map(struct sk_buff * skb,struct genl_info * info)13221 static int nl80211_set_qos_map(struct sk_buff *skb,
13222 struct genl_info *info)
13223 {
13224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13225 struct cfg80211_qos_map *qos_map = NULL;
13226 struct net_device *dev = info->user_ptr[1];
13227 u8 *pos, len, num_des, des_len, des;
13228 int ret;
13229
13230 if (!rdev->ops->set_qos_map)
13231 return -EOPNOTSUPP;
13232
13233 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13234 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13235 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13236
13237 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13238 len > IEEE80211_QOS_MAP_LEN_MAX)
13239 return -EINVAL;
13240
13241 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13242 if (!qos_map)
13243 return -ENOMEM;
13244
13245 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13246 if (num_des) {
13247 des_len = num_des *
13248 sizeof(struct cfg80211_dscp_exception);
13249 memcpy(qos_map->dscp_exception, pos, des_len);
13250 qos_map->num_des = num_des;
13251 for (des = 0; des < num_des; des++) {
13252 if (qos_map->dscp_exception[des].up > 7) {
13253 kfree(qos_map);
13254 return -EINVAL;
13255 }
13256 }
13257 pos += des_len;
13258 }
13259 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13260 }
13261
13262 wdev_lock(dev->ieee80211_ptr);
13263 ret = nl80211_key_allowed(dev->ieee80211_ptr);
13264 if (!ret)
13265 ret = rdev_set_qos_map(rdev, dev, qos_map);
13266 wdev_unlock(dev->ieee80211_ptr);
13267
13268 kfree(qos_map);
13269 return ret;
13270 }
13271
nl80211_add_tx_ts(struct sk_buff * skb,struct genl_info * info)13272 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13273 {
13274 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13275 struct net_device *dev = info->user_ptr[1];
13276 struct wireless_dev *wdev = dev->ieee80211_ptr;
13277 const u8 *peer;
13278 u8 tsid, up;
13279 u16 admitted_time = 0;
13280 int err;
13281
13282 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13283 return -EOPNOTSUPP;
13284
13285 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13286 !info->attrs[NL80211_ATTR_USER_PRIO])
13287 return -EINVAL;
13288
13289 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13290 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13291
13292 /* WMM uses TIDs 0-7 even for TSPEC */
13293 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13294 /* TODO: handle 802.11 TSPEC/admission control
13295 * need more attributes for that (e.g. BA session requirement);
13296 * change the WMM adminssion test above to allow both then
13297 */
13298 return -EINVAL;
13299 }
13300
13301 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13302
13303 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13304 admitted_time =
13305 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13306 if (!admitted_time)
13307 return -EINVAL;
13308 }
13309
13310 wdev_lock(wdev);
13311 switch (wdev->iftype) {
13312 case NL80211_IFTYPE_STATION:
13313 case NL80211_IFTYPE_P2P_CLIENT:
13314 if (wdev->current_bss)
13315 break;
13316 err = -ENOTCONN;
13317 goto out;
13318 default:
13319 err = -EOPNOTSUPP;
13320 goto out;
13321 }
13322
13323 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13324
13325 out:
13326 wdev_unlock(wdev);
13327 return err;
13328 }
13329
nl80211_del_tx_ts(struct sk_buff * skb,struct genl_info * info)13330 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13331 {
13332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13333 struct net_device *dev = info->user_ptr[1];
13334 struct wireless_dev *wdev = dev->ieee80211_ptr;
13335 const u8 *peer;
13336 u8 tsid;
13337 int err;
13338
13339 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13340 return -EINVAL;
13341
13342 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13343 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13344
13345 wdev_lock(wdev);
13346 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13347 wdev_unlock(wdev);
13348
13349 return err;
13350 }
13351
nl80211_tdls_channel_switch(struct sk_buff * skb,struct genl_info * info)13352 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13353 struct genl_info *info)
13354 {
13355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13356 struct net_device *dev = info->user_ptr[1];
13357 struct wireless_dev *wdev = dev->ieee80211_ptr;
13358 struct cfg80211_chan_def chandef = {};
13359 const u8 *addr;
13360 u8 oper_class;
13361 int err;
13362
13363 if (!rdev->ops->tdls_channel_switch ||
13364 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13365 return -EOPNOTSUPP;
13366
13367 switch (dev->ieee80211_ptr->iftype) {
13368 case NL80211_IFTYPE_STATION:
13369 case NL80211_IFTYPE_P2P_CLIENT:
13370 break;
13371 default:
13372 return -EOPNOTSUPP;
13373 }
13374
13375 if (!info->attrs[NL80211_ATTR_MAC] ||
13376 !info->attrs[NL80211_ATTR_OPER_CLASS])
13377 return -EINVAL;
13378
13379 err = nl80211_parse_chandef(rdev, info, &chandef);
13380 if (err)
13381 return err;
13382
13383 /*
13384 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13385 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13386 * specification is not defined for them.
13387 */
13388 if (chandef.chan->band == NL80211_BAND_2GHZ &&
13389 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13390 chandef.width != NL80211_CHAN_WIDTH_20)
13391 return -EINVAL;
13392
13393 /* we will be active on the TDLS link */
13394 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13395 wdev->iftype))
13396 return -EINVAL;
13397
13398 /* don't allow switching to DFS channels */
13399 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13400 return -EINVAL;
13401
13402 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13403 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13404
13405 wdev_lock(wdev);
13406 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13407 wdev_unlock(wdev);
13408
13409 return err;
13410 }
13411
nl80211_tdls_cancel_channel_switch(struct sk_buff * skb,struct genl_info * info)13412 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13413 struct genl_info *info)
13414 {
13415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13416 struct net_device *dev = info->user_ptr[1];
13417 struct wireless_dev *wdev = dev->ieee80211_ptr;
13418 const u8 *addr;
13419
13420 if (!rdev->ops->tdls_channel_switch ||
13421 !rdev->ops->tdls_cancel_channel_switch ||
13422 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13423 return -EOPNOTSUPP;
13424
13425 switch (dev->ieee80211_ptr->iftype) {
13426 case NL80211_IFTYPE_STATION:
13427 case NL80211_IFTYPE_P2P_CLIENT:
13428 break;
13429 default:
13430 return -EOPNOTSUPP;
13431 }
13432
13433 if (!info->attrs[NL80211_ATTR_MAC])
13434 return -EINVAL;
13435
13436 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13437
13438 wdev_lock(wdev);
13439 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13440 wdev_unlock(wdev);
13441
13442 return 0;
13443 }
13444
nl80211_set_multicast_to_unicast(struct sk_buff * skb,struct genl_info * info)13445 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13446 struct genl_info *info)
13447 {
13448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13449 struct net_device *dev = info->user_ptr[1];
13450 struct wireless_dev *wdev = dev->ieee80211_ptr;
13451 const struct nlattr *nla;
13452 bool enabled;
13453
13454 if (!rdev->ops->set_multicast_to_unicast)
13455 return -EOPNOTSUPP;
13456
13457 if (wdev->iftype != NL80211_IFTYPE_AP &&
13458 wdev->iftype != NL80211_IFTYPE_P2P_GO)
13459 return -EOPNOTSUPP;
13460
13461 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13462 enabled = nla_get_flag(nla);
13463
13464 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13465 }
13466
nl80211_set_pmk(struct sk_buff * skb,struct genl_info * info)13467 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13468 {
13469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13470 struct net_device *dev = info->user_ptr[1];
13471 struct wireless_dev *wdev = dev->ieee80211_ptr;
13472 struct cfg80211_pmk_conf pmk_conf = {};
13473 int ret;
13474
13475 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13476 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13477 return -EOPNOTSUPP;
13478
13479 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13480 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13481 return -EOPNOTSUPP;
13482
13483 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13484 return -EINVAL;
13485
13486 wdev_lock(wdev);
13487 if (!wdev->current_bss) {
13488 ret = -ENOTCONN;
13489 goto out;
13490 }
13491
13492 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13493 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13494 ret = -EINVAL;
13495 goto out;
13496 }
13497
13498 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13499 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13500 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13501 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13502 ret = -EINVAL;
13503 goto out;
13504 }
13505
13506 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13507 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13508
13509 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13510 ret = -EINVAL;
13511 goto out;
13512 }
13513
13514 pmk_conf.pmk_r0_name =
13515 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13516 }
13517
13518 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13519 out:
13520 wdev_unlock(wdev);
13521 return ret;
13522 }
13523
nl80211_del_pmk(struct sk_buff * skb,struct genl_info * info)13524 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13525 {
13526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13527 struct net_device *dev = info->user_ptr[1];
13528 struct wireless_dev *wdev = dev->ieee80211_ptr;
13529 const u8 *aa;
13530 int ret;
13531
13532 if (wdev->iftype != NL80211_IFTYPE_STATION &&
13533 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13534 return -EOPNOTSUPP;
13535
13536 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13537 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13538 return -EOPNOTSUPP;
13539
13540 if (!info->attrs[NL80211_ATTR_MAC])
13541 return -EINVAL;
13542
13543 wdev_lock(wdev);
13544 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13545 ret = rdev_del_pmk(rdev, dev, aa);
13546 wdev_unlock(wdev);
13547
13548 return ret;
13549 }
13550
nl80211_external_auth(struct sk_buff * skb,struct genl_info * info)13551 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13552 {
13553 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13554 struct net_device *dev = info->user_ptr[1];
13555 struct cfg80211_external_auth_params params;
13556
13557 if (!rdev->ops->external_auth)
13558 return -EOPNOTSUPP;
13559
13560 if (!info->attrs[NL80211_ATTR_SSID] &&
13561 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13562 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13563 return -EINVAL;
13564
13565 if (!info->attrs[NL80211_ATTR_BSSID])
13566 return -EINVAL;
13567
13568 if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13569 return -EINVAL;
13570
13571 memset(¶ms, 0, sizeof(params));
13572
13573 if (info->attrs[NL80211_ATTR_SSID]) {
13574 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13575 if (params.ssid.ssid_len == 0 ||
13576 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13577 return -EINVAL;
13578 memcpy(params.ssid.ssid,
13579 nla_data(info->attrs[NL80211_ATTR_SSID]),
13580 params.ssid.ssid_len);
13581 }
13582
13583 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13584 ETH_ALEN);
13585
13586 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13587
13588 if (info->attrs[NL80211_ATTR_PMKID])
13589 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13590
13591 return rdev_external_auth(rdev, dev, ¶ms);
13592 }
13593
nl80211_tx_control_port(struct sk_buff * skb,struct genl_info * info)13594 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13595 {
13596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13597 struct net_device *dev = info->user_ptr[1];
13598 struct wireless_dev *wdev = dev->ieee80211_ptr;
13599 const u8 *buf;
13600 size_t len;
13601 u8 *dest;
13602 u16 proto;
13603 bool noencrypt;
13604 int err;
13605
13606 if (!wiphy_ext_feature_isset(&rdev->wiphy,
13607 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13608 return -EOPNOTSUPP;
13609
13610 if (!rdev->ops->tx_control_port)
13611 return -EOPNOTSUPP;
13612
13613 if (!info->attrs[NL80211_ATTR_FRAME] ||
13614 !info->attrs[NL80211_ATTR_MAC] ||
13615 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13616 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13617 return -EINVAL;
13618 }
13619
13620 wdev_lock(wdev);
13621
13622 switch (wdev->iftype) {
13623 case NL80211_IFTYPE_AP:
13624 case NL80211_IFTYPE_P2P_GO:
13625 case NL80211_IFTYPE_MESH_POINT:
13626 break;
13627 case NL80211_IFTYPE_ADHOC:
13628 case NL80211_IFTYPE_STATION:
13629 case NL80211_IFTYPE_P2P_CLIENT:
13630 if (wdev->current_bss)
13631 break;
13632 err = -ENOTCONN;
13633 goto out;
13634 default:
13635 err = -EOPNOTSUPP;
13636 goto out;
13637 }
13638
13639 wdev_unlock(wdev);
13640
13641 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13642 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13643 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13644 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13645 noencrypt =
13646 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13647
13648 return rdev_tx_control_port(rdev, dev, buf, len,
13649 dest, cpu_to_be16(proto), noencrypt);
13650
13651 out:
13652 wdev_unlock(wdev);
13653 return err;
13654 }
13655
nl80211_get_ftm_responder_stats(struct sk_buff * skb,struct genl_info * info)13656 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13657 struct genl_info *info)
13658 {
13659 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13660 struct net_device *dev = info->user_ptr[1];
13661 struct wireless_dev *wdev = dev->ieee80211_ptr;
13662 struct cfg80211_ftm_responder_stats ftm_stats = {};
13663 struct sk_buff *msg;
13664 void *hdr;
13665 struct nlattr *ftm_stats_attr;
13666 int err;
13667
13668 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13669 return -EOPNOTSUPP;
13670
13671 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13672 if (err)
13673 return err;
13674
13675 if (!ftm_stats.filled)
13676 return -ENODATA;
13677
13678 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13679 if (!msg)
13680 return -ENOMEM;
13681
13682 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13683 NL80211_CMD_GET_FTM_RESPONDER_STATS);
13684 if (!hdr)
13685 goto nla_put_failure;
13686
13687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13688 goto nla_put_failure;
13689
13690 ftm_stats_attr = nla_nest_start_noflag(msg,
13691 NL80211_ATTR_FTM_RESPONDER_STATS);
13692 if (!ftm_stats_attr)
13693 goto nla_put_failure;
13694
13695 #define SET_FTM(field, name, type) \
13696 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13697 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \
13698 ftm_stats.field)) \
13699 goto nla_put_failure; } while (0)
13700 #define SET_FTM_U64(field, name) \
13701 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13702 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \
13703 ftm_stats.field, NL80211_FTM_STATS_PAD)) \
13704 goto nla_put_failure; } while (0)
13705
13706 SET_FTM(success_num, SUCCESS_NUM, u32);
13707 SET_FTM(partial_num, PARTIAL_NUM, u32);
13708 SET_FTM(failed_num, FAILED_NUM, u32);
13709 SET_FTM(asap_num, ASAP_NUM, u32);
13710 SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13711 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13712 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13713 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13714 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13715 #undef SET_FTM
13716
13717 nla_nest_end(msg, ftm_stats_attr);
13718
13719 genlmsg_end(msg, hdr);
13720 return genlmsg_reply(msg, info);
13721
13722 nla_put_failure:
13723 nlmsg_free(msg);
13724 return -ENOBUFS;
13725 }
13726
nl80211_update_owe_info(struct sk_buff * skb,struct genl_info * info)13727 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13728 {
13729 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13730 struct cfg80211_update_owe_info owe_info;
13731 struct net_device *dev = info->user_ptr[1];
13732
13733 if (!rdev->ops->update_owe_info)
13734 return -EOPNOTSUPP;
13735
13736 if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13737 !info->attrs[NL80211_ATTR_MAC])
13738 return -EINVAL;
13739
13740 memset(&owe_info, 0, sizeof(owe_info));
13741 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13742 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13743
13744 if (info->attrs[NL80211_ATTR_IE]) {
13745 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13746 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13747 }
13748
13749 return rdev_update_owe_info(rdev, dev, &owe_info);
13750 }
13751
nl80211_probe_mesh_link(struct sk_buff * skb,struct genl_info * info)13752 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13753 {
13754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
13755 struct net_device *dev = info->user_ptr[1];
13756 struct wireless_dev *wdev = dev->ieee80211_ptr;
13757 struct station_info sinfo = {};
13758 const u8 *buf;
13759 size_t len;
13760 u8 *dest;
13761 int err;
13762
13763 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13764 return -EOPNOTSUPP;
13765
13766 if (!info->attrs[NL80211_ATTR_MAC] ||
13767 !info->attrs[NL80211_ATTR_FRAME]) {
13768 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13769 return -EINVAL;
13770 }
13771
13772 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13773 return -EOPNOTSUPP;
13774
13775 dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13776 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13777 len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13778
13779 if (len < sizeof(struct ethhdr))
13780 return -EINVAL;
13781
13782 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13783 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13784 return -EINVAL;
13785
13786 err = rdev_get_station(rdev, dev, dest, &sinfo);
13787 if (err)
13788 return err;
13789
13790 return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13791 }
13792
13793 #define NL80211_FLAG_NEED_WIPHY 0x01
13794 #define NL80211_FLAG_NEED_NETDEV 0x02
13795 #define NL80211_FLAG_NEED_RTNL 0x04
13796 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
13797 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
13798 NL80211_FLAG_CHECK_NETDEV_UP)
13799 #define NL80211_FLAG_NEED_WDEV 0x10
13800 /* If a netdev is associated, it must be UP, P2P must be started */
13801 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
13802 NL80211_FLAG_CHECK_NETDEV_UP)
13803 #define NL80211_FLAG_CLEAR_SKB 0x20
13804
nl80211_pre_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)13805 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13806 struct genl_info *info)
13807 {
13808 struct cfg80211_registered_device *rdev;
13809 struct wireless_dev *wdev;
13810 struct net_device *dev;
13811 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13812
13813 if (rtnl)
13814 rtnl_lock();
13815
13816 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13817 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13818 if (IS_ERR(rdev)) {
13819 if (rtnl)
13820 rtnl_unlock();
13821 return PTR_ERR(rdev);
13822 }
13823 info->user_ptr[0] = rdev;
13824 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13825 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13826 ASSERT_RTNL();
13827
13828 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13829 info->attrs);
13830 if (IS_ERR(wdev)) {
13831 if (rtnl)
13832 rtnl_unlock();
13833 return PTR_ERR(wdev);
13834 }
13835
13836 dev = wdev->netdev;
13837 rdev = wiphy_to_rdev(wdev->wiphy);
13838
13839 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13840 if (!dev) {
13841 if (rtnl)
13842 rtnl_unlock();
13843 return -EINVAL;
13844 }
13845
13846 info->user_ptr[1] = dev;
13847 } else {
13848 info->user_ptr[1] = wdev;
13849 }
13850
13851 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13852 !wdev_running(wdev)) {
13853 if (rtnl)
13854 rtnl_unlock();
13855 return -ENETDOWN;
13856 }
13857
13858 if (dev)
13859 dev_hold(dev);
13860
13861 info->user_ptr[0] = rdev;
13862 }
13863
13864 return 0;
13865 }
13866
nl80211_post_doit(const struct genl_ops * ops,struct sk_buff * skb,struct genl_info * info)13867 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13868 struct genl_info *info)
13869 {
13870 if (info->user_ptr[1]) {
13871 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13872 struct wireless_dev *wdev = info->user_ptr[1];
13873
13874 if (wdev->netdev)
13875 dev_put(wdev->netdev);
13876 } else {
13877 dev_put(info->user_ptr[1]);
13878 }
13879 }
13880
13881 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13882 rtnl_unlock();
13883
13884 /* If needed, clear the netlink message payload from the SKB
13885 * as it might contain key data that shouldn't stick around on
13886 * the heap after the SKB is freed. The netlink message header
13887 * is still needed for further processing, so leave it intact.
13888 */
13889 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13890 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13891
13892 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13893 }
13894 }
13895
13896 static const struct genl_ops nl80211_ops[] = {
13897 {
13898 .cmd = NL80211_CMD_GET_WIPHY,
13899 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13900 .doit = nl80211_get_wiphy,
13901 .dumpit = nl80211_dump_wiphy,
13902 .done = nl80211_dump_wiphy_done,
13903 /* can be retrieved by unprivileged users */
13904 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13905 NL80211_FLAG_NEED_RTNL,
13906 },
13907 {
13908 .cmd = NL80211_CMD_SET_WIPHY,
13909 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13910 .doit = nl80211_set_wiphy,
13911 .flags = GENL_UNS_ADMIN_PERM,
13912 .internal_flags = NL80211_FLAG_NEED_RTNL,
13913 },
13914 {
13915 .cmd = NL80211_CMD_GET_INTERFACE,
13916 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13917 .doit = nl80211_get_interface,
13918 .dumpit = nl80211_dump_interface,
13919 /* can be retrieved by unprivileged users */
13920 .internal_flags = NL80211_FLAG_NEED_WDEV |
13921 NL80211_FLAG_NEED_RTNL,
13922 },
13923 {
13924 .cmd = NL80211_CMD_SET_INTERFACE,
13925 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13926 .doit = nl80211_set_interface,
13927 .flags = GENL_UNS_ADMIN_PERM,
13928 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13929 NL80211_FLAG_NEED_RTNL,
13930 },
13931 {
13932 .cmd = NL80211_CMD_NEW_INTERFACE,
13933 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13934 .doit = nl80211_new_interface,
13935 .flags = GENL_UNS_ADMIN_PERM,
13936 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13937 NL80211_FLAG_NEED_RTNL,
13938 },
13939 {
13940 .cmd = NL80211_CMD_DEL_INTERFACE,
13941 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13942 .doit = nl80211_del_interface,
13943 .flags = GENL_UNS_ADMIN_PERM,
13944 .internal_flags = NL80211_FLAG_NEED_WDEV |
13945 NL80211_FLAG_NEED_RTNL,
13946 },
13947 {
13948 .cmd = NL80211_CMD_GET_KEY,
13949 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13950 .doit = nl80211_get_key,
13951 .flags = GENL_UNS_ADMIN_PERM,
13952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13953 NL80211_FLAG_NEED_RTNL,
13954 },
13955 {
13956 .cmd = NL80211_CMD_SET_KEY,
13957 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13958 .doit = nl80211_set_key,
13959 .flags = GENL_UNS_ADMIN_PERM,
13960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13961 NL80211_FLAG_NEED_RTNL |
13962 NL80211_FLAG_CLEAR_SKB,
13963 },
13964 {
13965 .cmd = NL80211_CMD_NEW_KEY,
13966 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13967 .doit = nl80211_new_key,
13968 .flags = GENL_UNS_ADMIN_PERM,
13969 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13970 NL80211_FLAG_NEED_RTNL |
13971 NL80211_FLAG_CLEAR_SKB,
13972 },
13973 {
13974 .cmd = NL80211_CMD_DEL_KEY,
13975 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13976 .doit = nl80211_del_key,
13977 .flags = GENL_UNS_ADMIN_PERM,
13978 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13979 NL80211_FLAG_NEED_RTNL,
13980 },
13981 {
13982 .cmd = NL80211_CMD_SET_BEACON,
13983 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13984 .flags = GENL_UNS_ADMIN_PERM,
13985 .doit = nl80211_set_beacon,
13986 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13987 NL80211_FLAG_NEED_RTNL,
13988 },
13989 {
13990 .cmd = NL80211_CMD_START_AP,
13991 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13992 .flags = GENL_UNS_ADMIN_PERM,
13993 .doit = nl80211_start_ap,
13994 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13995 NL80211_FLAG_NEED_RTNL,
13996 },
13997 {
13998 .cmd = NL80211_CMD_STOP_AP,
13999 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14000 .flags = GENL_UNS_ADMIN_PERM,
14001 .doit = nl80211_stop_ap,
14002 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14003 NL80211_FLAG_NEED_RTNL,
14004 },
14005 {
14006 .cmd = NL80211_CMD_GET_STATION,
14007 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14008 .doit = nl80211_get_station,
14009 .dumpit = nl80211_dump_station,
14010 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14011 NL80211_FLAG_NEED_RTNL,
14012 },
14013 {
14014 .cmd = NL80211_CMD_SET_STATION,
14015 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14016 .doit = nl80211_set_station,
14017 .flags = GENL_UNS_ADMIN_PERM,
14018 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14019 NL80211_FLAG_NEED_RTNL,
14020 },
14021 {
14022 .cmd = NL80211_CMD_NEW_STATION,
14023 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14024 .doit = nl80211_new_station,
14025 .flags = GENL_UNS_ADMIN_PERM,
14026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14027 NL80211_FLAG_NEED_RTNL,
14028 },
14029 {
14030 .cmd = NL80211_CMD_DEL_STATION,
14031 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14032 .doit = nl80211_del_station,
14033 .flags = GENL_UNS_ADMIN_PERM,
14034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14035 NL80211_FLAG_NEED_RTNL,
14036 },
14037 {
14038 .cmd = NL80211_CMD_GET_MPATH,
14039 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14040 .doit = nl80211_get_mpath,
14041 .dumpit = nl80211_dump_mpath,
14042 .flags = GENL_UNS_ADMIN_PERM,
14043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14044 NL80211_FLAG_NEED_RTNL,
14045 },
14046 {
14047 .cmd = NL80211_CMD_GET_MPP,
14048 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14049 .doit = nl80211_get_mpp,
14050 .dumpit = nl80211_dump_mpp,
14051 .flags = GENL_UNS_ADMIN_PERM,
14052 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14053 NL80211_FLAG_NEED_RTNL,
14054 },
14055 {
14056 .cmd = NL80211_CMD_SET_MPATH,
14057 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14058 .doit = nl80211_set_mpath,
14059 .flags = GENL_UNS_ADMIN_PERM,
14060 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14061 NL80211_FLAG_NEED_RTNL,
14062 },
14063 {
14064 .cmd = NL80211_CMD_NEW_MPATH,
14065 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14066 .doit = nl80211_new_mpath,
14067 .flags = GENL_UNS_ADMIN_PERM,
14068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14069 NL80211_FLAG_NEED_RTNL,
14070 },
14071 {
14072 .cmd = NL80211_CMD_DEL_MPATH,
14073 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14074 .doit = nl80211_del_mpath,
14075 .flags = GENL_UNS_ADMIN_PERM,
14076 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14077 NL80211_FLAG_NEED_RTNL,
14078 },
14079 {
14080 .cmd = NL80211_CMD_SET_BSS,
14081 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14082 .doit = nl80211_set_bss,
14083 .flags = GENL_UNS_ADMIN_PERM,
14084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14085 NL80211_FLAG_NEED_RTNL,
14086 },
14087 {
14088 .cmd = NL80211_CMD_GET_REG,
14089 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14090 .doit = nl80211_get_reg_do,
14091 .dumpit = nl80211_get_reg_dump,
14092 .internal_flags = NL80211_FLAG_NEED_RTNL,
14093 /* can be retrieved by unprivileged users */
14094 },
14095 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14096 {
14097 .cmd = NL80211_CMD_SET_REG,
14098 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14099 .doit = nl80211_set_reg,
14100 .flags = GENL_ADMIN_PERM,
14101 .internal_flags = NL80211_FLAG_NEED_RTNL,
14102 },
14103 #endif
14104 {
14105 .cmd = NL80211_CMD_REQ_SET_REG,
14106 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14107 .doit = nl80211_req_set_reg,
14108 .flags = GENL_ADMIN_PERM,
14109 },
14110 {
14111 .cmd = NL80211_CMD_RELOAD_REGDB,
14112 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14113 .doit = nl80211_reload_regdb,
14114 .flags = GENL_ADMIN_PERM,
14115 },
14116 {
14117 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14118 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14119 .doit = nl80211_get_mesh_config,
14120 /* can be retrieved by unprivileged users */
14121 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14122 NL80211_FLAG_NEED_RTNL,
14123 },
14124 {
14125 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14126 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14127 .doit = nl80211_update_mesh_config,
14128 .flags = GENL_UNS_ADMIN_PERM,
14129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14130 NL80211_FLAG_NEED_RTNL,
14131 },
14132 {
14133 .cmd = NL80211_CMD_TRIGGER_SCAN,
14134 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14135 .doit = nl80211_trigger_scan,
14136 .flags = GENL_UNS_ADMIN_PERM,
14137 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14138 NL80211_FLAG_NEED_RTNL,
14139 },
14140 {
14141 .cmd = NL80211_CMD_ABORT_SCAN,
14142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14143 .doit = nl80211_abort_scan,
14144 .flags = GENL_UNS_ADMIN_PERM,
14145 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14146 NL80211_FLAG_NEED_RTNL,
14147 },
14148 {
14149 .cmd = NL80211_CMD_GET_SCAN,
14150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14151 .dumpit = nl80211_dump_scan,
14152 },
14153 {
14154 .cmd = NL80211_CMD_START_SCHED_SCAN,
14155 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14156 .doit = nl80211_start_sched_scan,
14157 .flags = GENL_UNS_ADMIN_PERM,
14158 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14159 NL80211_FLAG_NEED_RTNL,
14160 },
14161 {
14162 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14163 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14164 .doit = nl80211_stop_sched_scan,
14165 .flags = GENL_UNS_ADMIN_PERM,
14166 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14167 NL80211_FLAG_NEED_RTNL,
14168 },
14169 {
14170 .cmd = NL80211_CMD_AUTHENTICATE,
14171 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14172 .doit = nl80211_authenticate,
14173 .flags = GENL_UNS_ADMIN_PERM,
14174 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14175 NL80211_FLAG_NEED_RTNL |
14176 NL80211_FLAG_CLEAR_SKB,
14177 },
14178 {
14179 .cmd = NL80211_CMD_ASSOCIATE,
14180 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14181 .doit = nl80211_associate,
14182 .flags = GENL_UNS_ADMIN_PERM,
14183 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14184 NL80211_FLAG_NEED_RTNL |
14185 NL80211_FLAG_CLEAR_SKB,
14186 },
14187 {
14188 .cmd = NL80211_CMD_DEAUTHENTICATE,
14189 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14190 .doit = nl80211_deauthenticate,
14191 .flags = GENL_UNS_ADMIN_PERM,
14192 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14193 NL80211_FLAG_NEED_RTNL,
14194 },
14195 {
14196 .cmd = NL80211_CMD_DISASSOCIATE,
14197 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14198 .doit = nl80211_disassociate,
14199 .flags = GENL_UNS_ADMIN_PERM,
14200 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14201 NL80211_FLAG_NEED_RTNL,
14202 },
14203 {
14204 .cmd = NL80211_CMD_JOIN_IBSS,
14205 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14206 .doit = nl80211_join_ibss,
14207 .flags = GENL_UNS_ADMIN_PERM,
14208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14209 NL80211_FLAG_NEED_RTNL,
14210 },
14211 {
14212 .cmd = NL80211_CMD_LEAVE_IBSS,
14213 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14214 .doit = nl80211_leave_ibss,
14215 .flags = GENL_UNS_ADMIN_PERM,
14216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14217 NL80211_FLAG_NEED_RTNL,
14218 },
14219 #ifdef CONFIG_NL80211_TESTMODE
14220 {
14221 .cmd = NL80211_CMD_TESTMODE,
14222 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14223 .doit = nl80211_testmode_do,
14224 .dumpit = nl80211_testmode_dump,
14225 .flags = GENL_UNS_ADMIN_PERM,
14226 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14227 NL80211_FLAG_NEED_RTNL,
14228 },
14229 #endif
14230 {
14231 .cmd = NL80211_CMD_CONNECT,
14232 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14233 .doit = nl80211_connect,
14234 .flags = GENL_UNS_ADMIN_PERM,
14235 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14236 NL80211_FLAG_NEED_RTNL |
14237 NL80211_FLAG_CLEAR_SKB,
14238 },
14239 {
14240 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14241 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14242 .doit = nl80211_update_connect_params,
14243 .flags = GENL_ADMIN_PERM,
14244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14245 NL80211_FLAG_NEED_RTNL |
14246 NL80211_FLAG_CLEAR_SKB,
14247 },
14248 {
14249 .cmd = NL80211_CMD_DISCONNECT,
14250 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14251 .doit = nl80211_disconnect,
14252 .flags = GENL_UNS_ADMIN_PERM,
14253 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14254 NL80211_FLAG_NEED_RTNL,
14255 },
14256 {
14257 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14258 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14259 .doit = nl80211_wiphy_netns,
14260 .flags = GENL_UNS_ADMIN_PERM,
14261 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14262 NL80211_FLAG_NEED_RTNL,
14263 },
14264 {
14265 .cmd = NL80211_CMD_GET_SURVEY,
14266 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14267 .dumpit = nl80211_dump_survey,
14268 },
14269 {
14270 .cmd = NL80211_CMD_SET_PMKSA,
14271 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14272 .doit = nl80211_setdel_pmksa,
14273 .flags = GENL_UNS_ADMIN_PERM,
14274 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14275 NL80211_FLAG_NEED_RTNL |
14276 NL80211_FLAG_CLEAR_SKB,
14277 },
14278 {
14279 .cmd = NL80211_CMD_DEL_PMKSA,
14280 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14281 .doit = nl80211_setdel_pmksa,
14282 .flags = GENL_UNS_ADMIN_PERM,
14283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14284 NL80211_FLAG_NEED_RTNL,
14285 },
14286 {
14287 .cmd = NL80211_CMD_FLUSH_PMKSA,
14288 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14289 .doit = nl80211_flush_pmksa,
14290 .flags = GENL_UNS_ADMIN_PERM,
14291 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14292 NL80211_FLAG_NEED_RTNL,
14293 },
14294 {
14295 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14296 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14297 .doit = nl80211_remain_on_channel,
14298 .flags = GENL_UNS_ADMIN_PERM,
14299 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14300 NL80211_FLAG_NEED_RTNL,
14301 },
14302 {
14303 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14304 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14305 .doit = nl80211_cancel_remain_on_channel,
14306 .flags = GENL_UNS_ADMIN_PERM,
14307 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14308 NL80211_FLAG_NEED_RTNL,
14309 },
14310 {
14311 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14312 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14313 .doit = nl80211_set_tx_bitrate_mask,
14314 .flags = GENL_UNS_ADMIN_PERM,
14315 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14316 NL80211_FLAG_NEED_RTNL,
14317 },
14318 {
14319 .cmd = NL80211_CMD_REGISTER_FRAME,
14320 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14321 .doit = nl80211_register_mgmt,
14322 .flags = GENL_UNS_ADMIN_PERM,
14323 .internal_flags = NL80211_FLAG_NEED_WDEV |
14324 NL80211_FLAG_NEED_RTNL,
14325 },
14326 {
14327 .cmd = NL80211_CMD_FRAME,
14328 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14329 .doit = nl80211_tx_mgmt,
14330 .flags = GENL_UNS_ADMIN_PERM,
14331 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14332 NL80211_FLAG_NEED_RTNL,
14333 },
14334 {
14335 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14336 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14337 .doit = nl80211_tx_mgmt_cancel_wait,
14338 .flags = GENL_UNS_ADMIN_PERM,
14339 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14340 NL80211_FLAG_NEED_RTNL,
14341 },
14342 {
14343 .cmd = NL80211_CMD_SET_POWER_SAVE,
14344 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14345 .doit = nl80211_set_power_save,
14346 .flags = GENL_UNS_ADMIN_PERM,
14347 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14348 NL80211_FLAG_NEED_RTNL,
14349 },
14350 {
14351 .cmd = NL80211_CMD_GET_POWER_SAVE,
14352 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14353 .doit = nl80211_get_power_save,
14354 /* can be retrieved by unprivileged users */
14355 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14356 NL80211_FLAG_NEED_RTNL,
14357 },
14358 {
14359 .cmd = NL80211_CMD_SET_CQM,
14360 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14361 .doit = nl80211_set_cqm,
14362 .flags = GENL_UNS_ADMIN_PERM,
14363 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14364 NL80211_FLAG_NEED_RTNL,
14365 },
14366 {
14367 .cmd = NL80211_CMD_SET_CHANNEL,
14368 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14369 .doit = nl80211_set_channel,
14370 .flags = GENL_UNS_ADMIN_PERM,
14371 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14372 NL80211_FLAG_NEED_RTNL,
14373 },
14374 {
14375 .cmd = NL80211_CMD_SET_WDS_PEER,
14376 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14377 .doit = nl80211_set_wds_peer,
14378 .flags = GENL_UNS_ADMIN_PERM,
14379 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14380 NL80211_FLAG_NEED_RTNL,
14381 },
14382 {
14383 .cmd = NL80211_CMD_JOIN_MESH,
14384 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14385 .doit = nl80211_join_mesh,
14386 .flags = GENL_UNS_ADMIN_PERM,
14387 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14388 NL80211_FLAG_NEED_RTNL,
14389 },
14390 {
14391 .cmd = NL80211_CMD_LEAVE_MESH,
14392 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14393 .doit = nl80211_leave_mesh,
14394 .flags = GENL_UNS_ADMIN_PERM,
14395 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14396 NL80211_FLAG_NEED_RTNL,
14397 },
14398 {
14399 .cmd = NL80211_CMD_JOIN_OCB,
14400 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14401 .doit = nl80211_join_ocb,
14402 .flags = GENL_UNS_ADMIN_PERM,
14403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14404 NL80211_FLAG_NEED_RTNL,
14405 },
14406 {
14407 .cmd = NL80211_CMD_LEAVE_OCB,
14408 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14409 .doit = nl80211_leave_ocb,
14410 .flags = GENL_UNS_ADMIN_PERM,
14411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14412 NL80211_FLAG_NEED_RTNL,
14413 },
14414 #ifdef CONFIG_PM
14415 {
14416 .cmd = NL80211_CMD_GET_WOWLAN,
14417 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14418 .doit = nl80211_get_wowlan,
14419 /* can be retrieved by unprivileged users */
14420 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14421 NL80211_FLAG_NEED_RTNL,
14422 },
14423 {
14424 .cmd = NL80211_CMD_SET_WOWLAN,
14425 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14426 .doit = nl80211_set_wowlan,
14427 .flags = GENL_UNS_ADMIN_PERM,
14428 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14429 NL80211_FLAG_NEED_RTNL,
14430 },
14431 #endif
14432 {
14433 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14434 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435 .doit = nl80211_set_rekey_data,
14436 .flags = GENL_UNS_ADMIN_PERM,
14437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14438 NL80211_FLAG_NEED_RTNL |
14439 NL80211_FLAG_CLEAR_SKB,
14440 },
14441 {
14442 .cmd = NL80211_CMD_TDLS_MGMT,
14443 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14444 .doit = nl80211_tdls_mgmt,
14445 .flags = GENL_UNS_ADMIN_PERM,
14446 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14447 NL80211_FLAG_NEED_RTNL,
14448 },
14449 {
14450 .cmd = NL80211_CMD_TDLS_OPER,
14451 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14452 .doit = nl80211_tdls_oper,
14453 .flags = GENL_UNS_ADMIN_PERM,
14454 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14455 NL80211_FLAG_NEED_RTNL,
14456 },
14457 {
14458 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14459 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14460 .doit = nl80211_register_unexpected_frame,
14461 .flags = GENL_UNS_ADMIN_PERM,
14462 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14463 NL80211_FLAG_NEED_RTNL,
14464 },
14465 {
14466 .cmd = NL80211_CMD_PROBE_CLIENT,
14467 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14468 .doit = nl80211_probe_client,
14469 .flags = GENL_UNS_ADMIN_PERM,
14470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14471 NL80211_FLAG_NEED_RTNL,
14472 },
14473 {
14474 .cmd = NL80211_CMD_REGISTER_BEACONS,
14475 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14476 .doit = nl80211_register_beacons,
14477 .flags = GENL_UNS_ADMIN_PERM,
14478 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14479 NL80211_FLAG_NEED_RTNL,
14480 },
14481 {
14482 .cmd = NL80211_CMD_SET_NOACK_MAP,
14483 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14484 .doit = nl80211_set_noack_map,
14485 .flags = GENL_UNS_ADMIN_PERM,
14486 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14487 NL80211_FLAG_NEED_RTNL,
14488 },
14489 {
14490 .cmd = NL80211_CMD_START_P2P_DEVICE,
14491 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14492 .doit = nl80211_start_p2p_device,
14493 .flags = GENL_UNS_ADMIN_PERM,
14494 .internal_flags = NL80211_FLAG_NEED_WDEV |
14495 NL80211_FLAG_NEED_RTNL,
14496 },
14497 {
14498 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14499 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14500 .doit = nl80211_stop_p2p_device,
14501 .flags = GENL_UNS_ADMIN_PERM,
14502 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14503 NL80211_FLAG_NEED_RTNL,
14504 },
14505 {
14506 .cmd = NL80211_CMD_START_NAN,
14507 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14508 .doit = nl80211_start_nan,
14509 .flags = GENL_ADMIN_PERM,
14510 .internal_flags = NL80211_FLAG_NEED_WDEV |
14511 NL80211_FLAG_NEED_RTNL,
14512 },
14513 {
14514 .cmd = NL80211_CMD_STOP_NAN,
14515 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14516 .doit = nl80211_stop_nan,
14517 .flags = GENL_ADMIN_PERM,
14518 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14519 NL80211_FLAG_NEED_RTNL,
14520 },
14521 {
14522 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14523 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14524 .doit = nl80211_nan_add_func,
14525 .flags = GENL_ADMIN_PERM,
14526 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14527 NL80211_FLAG_NEED_RTNL,
14528 },
14529 {
14530 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14531 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14532 .doit = nl80211_nan_del_func,
14533 .flags = GENL_ADMIN_PERM,
14534 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14535 NL80211_FLAG_NEED_RTNL,
14536 },
14537 {
14538 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14539 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14540 .doit = nl80211_nan_change_config,
14541 .flags = GENL_ADMIN_PERM,
14542 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14543 NL80211_FLAG_NEED_RTNL,
14544 },
14545 {
14546 .cmd = NL80211_CMD_SET_MCAST_RATE,
14547 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14548 .doit = nl80211_set_mcast_rate,
14549 .flags = GENL_UNS_ADMIN_PERM,
14550 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14551 NL80211_FLAG_NEED_RTNL,
14552 },
14553 {
14554 .cmd = NL80211_CMD_SET_MAC_ACL,
14555 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14556 .doit = nl80211_set_mac_acl,
14557 .flags = GENL_UNS_ADMIN_PERM,
14558 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14559 NL80211_FLAG_NEED_RTNL,
14560 },
14561 {
14562 .cmd = NL80211_CMD_RADAR_DETECT,
14563 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14564 .doit = nl80211_start_radar_detection,
14565 .flags = GENL_UNS_ADMIN_PERM,
14566 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14567 NL80211_FLAG_NEED_RTNL,
14568 },
14569 {
14570 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14571 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14572 .doit = nl80211_get_protocol_features,
14573 },
14574 {
14575 .cmd = NL80211_CMD_UPDATE_FT_IES,
14576 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14577 .doit = nl80211_update_ft_ies,
14578 .flags = GENL_UNS_ADMIN_PERM,
14579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14580 NL80211_FLAG_NEED_RTNL,
14581 },
14582 {
14583 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14584 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14585 .doit = nl80211_crit_protocol_start,
14586 .flags = GENL_UNS_ADMIN_PERM,
14587 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14588 NL80211_FLAG_NEED_RTNL,
14589 },
14590 {
14591 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14592 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14593 .doit = nl80211_crit_protocol_stop,
14594 .flags = GENL_UNS_ADMIN_PERM,
14595 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14596 NL80211_FLAG_NEED_RTNL,
14597 },
14598 {
14599 .cmd = NL80211_CMD_GET_COALESCE,
14600 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14601 .doit = nl80211_get_coalesce,
14602 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14603 NL80211_FLAG_NEED_RTNL,
14604 },
14605 {
14606 .cmd = NL80211_CMD_SET_COALESCE,
14607 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14608 .doit = nl80211_set_coalesce,
14609 .flags = GENL_UNS_ADMIN_PERM,
14610 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14611 NL80211_FLAG_NEED_RTNL,
14612 },
14613 {
14614 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14615 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14616 .doit = nl80211_channel_switch,
14617 .flags = GENL_UNS_ADMIN_PERM,
14618 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14619 NL80211_FLAG_NEED_RTNL,
14620 },
14621 {
14622 .cmd = NL80211_CMD_VENDOR,
14623 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14624 .doit = nl80211_vendor_cmd,
14625 .dumpit = nl80211_vendor_cmd_dump,
14626 .flags = GENL_UNS_ADMIN_PERM,
14627 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14628 NL80211_FLAG_NEED_RTNL |
14629 NL80211_FLAG_CLEAR_SKB,
14630 },
14631 {
14632 .cmd = NL80211_CMD_SET_QOS_MAP,
14633 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14634 .doit = nl80211_set_qos_map,
14635 .flags = GENL_UNS_ADMIN_PERM,
14636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14637 NL80211_FLAG_NEED_RTNL,
14638 },
14639 {
14640 .cmd = NL80211_CMD_ADD_TX_TS,
14641 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14642 .doit = nl80211_add_tx_ts,
14643 .flags = GENL_UNS_ADMIN_PERM,
14644 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14645 NL80211_FLAG_NEED_RTNL,
14646 },
14647 {
14648 .cmd = NL80211_CMD_DEL_TX_TS,
14649 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14650 .doit = nl80211_del_tx_ts,
14651 .flags = GENL_UNS_ADMIN_PERM,
14652 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14653 NL80211_FLAG_NEED_RTNL,
14654 },
14655 {
14656 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14657 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14658 .doit = nl80211_tdls_channel_switch,
14659 .flags = GENL_UNS_ADMIN_PERM,
14660 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14661 NL80211_FLAG_NEED_RTNL,
14662 },
14663 {
14664 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14665 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14666 .doit = nl80211_tdls_cancel_channel_switch,
14667 .flags = GENL_UNS_ADMIN_PERM,
14668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14669 NL80211_FLAG_NEED_RTNL,
14670 },
14671 {
14672 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14673 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674 .doit = nl80211_set_multicast_to_unicast,
14675 .flags = GENL_UNS_ADMIN_PERM,
14676 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14677 NL80211_FLAG_NEED_RTNL,
14678 },
14679 {
14680 .cmd = NL80211_CMD_SET_PMK,
14681 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14682 .doit = nl80211_set_pmk,
14683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14684 NL80211_FLAG_NEED_RTNL |
14685 NL80211_FLAG_CLEAR_SKB,
14686 },
14687 {
14688 .cmd = NL80211_CMD_DEL_PMK,
14689 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14690 .doit = nl80211_del_pmk,
14691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14692 NL80211_FLAG_NEED_RTNL,
14693 },
14694 {
14695 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14696 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14697 .doit = nl80211_external_auth,
14698 .flags = GENL_ADMIN_PERM,
14699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14700 NL80211_FLAG_NEED_RTNL,
14701 },
14702 {
14703 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14704 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14705 .doit = nl80211_tx_control_port,
14706 .flags = GENL_UNS_ADMIN_PERM,
14707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14708 NL80211_FLAG_NEED_RTNL,
14709 },
14710 {
14711 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14712 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14713 .doit = nl80211_get_ftm_responder_stats,
14714 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14715 NL80211_FLAG_NEED_RTNL,
14716 },
14717 {
14718 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14719 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14720 .doit = nl80211_pmsr_start,
14721 .flags = GENL_UNS_ADMIN_PERM,
14722 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14723 NL80211_FLAG_NEED_RTNL,
14724 },
14725 {
14726 .cmd = NL80211_CMD_NOTIFY_RADAR,
14727 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14728 .doit = nl80211_notify_radar_detection,
14729 .flags = GENL_UNS_ADMIN_PERM,
14730 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14731 NL80211_FLAG_NEED_RTNL,
14732 },
14733 {
14734 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14735 .doit = nl80211_update_owe_info,
14736 .flags = GENL_ADMIN_PERM,
14737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738 NL80211_FLAG_NEED_RTNL,
14739 },
14740 {
14741 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14742 .doit = nl80211_probe_mesh_link,
14743 .flags = GENL_UNS_ADMIN_PERM,
14744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14745 NL80211_FLAG_NEED_RTNL,
14746 },
14747 };
14748
14749 static struct genl_family nl80211_fam __ro_after_init = {
14750 .name = NL80211_GENL_NAME, /* have users key off the name instead */
14751 .hdrsize = 0, /* no private header */
14752 .version = 1, /* no particular meaning now */
14753 .maxattr = NL80211_ATTR_MAX,
14754 .policy = nl80211_policy,
14755 .netnsok = true,
14756 .pre_doit = nl80211_pre_doit,
14757 .post_doit = nl80211_post_doit,
14758 .module = THIS_MODULE,
14759 .ops = nl80211_ops,
14760 .n_ops = ARRAY_SIZE(nl80211_ops),
14761 .mcgrps = nl80211_mcgrps,
14762 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14763 .parallel_ops = true,
14764 };
14765
14766 /* notification functions */
14767
nl80211_notify_wiphy(struct cfg80211_registered_device * rdev,enum nl80211_commands cmd)14768 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14769 enum nl80211_commands cmd)
14770 {
14771 struct sk_buff *msg;
14772 struct nl80211_dump_wiphy_state state = {};
14773
14774 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14775 cmd != NL80211_CMD_DEL_WIPHY);
14776
14777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14778 if (!msg)
14779 return;
14780
14781 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14782 nlmsg_free(msg);
14783 return;
14784 }
14785
14786 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14787 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14788 }
14789
nl80211_notify_iface(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,enum nl80211_commands cmd)14790 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14791 struct wireless_dev *wdev,
14792 enum nl80211_commands cmd)
14793 {
14794 struct sk_buff *msg;
14795
14796 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14797 if (!msg)
14798 return;
14799
14800 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14801 nlmsg_free(msg);
14802 return;
14803 }
14804
14805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14806 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14807 }
14808
nl80211_add_scan_req(struct sk_buff * msg,struct cfg80211_registered_device * rdev)14809 static int nl80211_add_scan_req(struct sk_buff *msg,
14810 struct cfg80211_registered_device *rdev)
14811 {
14812 struct cfg80211_scan_request *req = rdev->scan_req;
14813 struct nlattr *nest;
14814 int i;
14815
14816 if (WARN_ON(!req))
14817 return 0;
14818
14819 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14820 if (!nest)
14821 goto nla_put_failure;
14822 for (i = 0; i < req->n_ssids; i++) {
14823 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14824 goto nla_put_failure;
14825 }
14826 nla_nest_end(msg, nest);
14827
14828 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14829 if (!nest)
14830 goto nla_put_failure;
14831 for (i = 0; i < req->n_channels; i++) {
14832 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14833 goto nla_put_failure;
14834 }
14835 nla_nest_end(msg, nest);
14836
14837 if (req->ie &&
14838 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14839 goto nla_put_failure;
14840
14841 if (req->flags &&
14842 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14843 goto nla_put_failure;
14844
14845 if (req->info.scan_start_tsf &&
14846 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14847 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14848 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14849 req->info.tsf_bssid)))
14850 goto nla_put_failure;
14851
14852 return 0;
14853 nla_put_failure:
14854 return -ENOBUFS;
14855 }
14856
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)14857 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14858 struct cfg80211_registered_device *rdev,
14859 struct wireless_dev *wdev,
14860 u32 portid, u32 seq, int flags,
14861 u32 cmd)
14862 {
14863 void *hdr;
14864
14865 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14866 if (!hdr)
14867 return -1;
14868
14869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14870 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14871 wdev->netdev->ifindex)) ||
14872 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14873 NL80211_ATTR_PAD))
14874 goto nla_put_failure;
14875
14876 /* ignore errors and send incomplete event anyway */
14877 nl80211_add_scan_req(msg, rdev);
14878
14879 genlmsg_end(msg, hdr);
14880 return 0;
14881
14882 nla_put_failure:
14883 genlmsg_cancel(msg, hdr);
14884 return -EMSGSIZE;
14885 }
14886
14887 static int
nl80211_prep_sched_scan_msg(struct sk_buff * msg,struct cfg80211_sched_scan_request * req,u32 cmd)14888 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14889 struct cfg80211_sched_scan_request *req, u32 cmd)
14890 {
14891 void *hdr;
14892
14893 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14894 if (!hdr)
14895 return -1;
14896
14897 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14898 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14899 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14900 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14901 NL80211_ATTR_PAD))
14902 goto nla_put_failure;
14903
14904 genlmsg_end(msg, hdr);
14905 return 0;
14906
14907 nla_put_failure:
14908 genlmsg_cancel(msg, hdr);
14909 return -EMSGSIZE;
14910 }
14911
nl80211_send_scan_start(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev)14912 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14913 struct wireless_dev *wdev)
14914 {
14915 struct sk_buff *msg;
14916
14917 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14918 if (!msg)
14919 return;
14920
14921 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14922 NL80211_CMD_TRIGGER_SCAN) < 0) {
14923 nlmsg_free(msg);
14924 return;
14925 }
14926
14927 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14928 NL80211_MCGRP_SCAN, GFP_KERNEL);
14929 }
14930
nl80211_build_scan_msg(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,bool aborted)14931 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14932 struct wireless_dev *wdev, bool aborted)
14933 {
14934 struct sk_buff *msg;
14935
14936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14937 if (!msg)
14938 return NULL;
14939
14940 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14941 aborted ? NL80211_CMD_SCAN_ABORTED :
14942 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14943 nlmsg_free(msg);
14944 return NULL;
14945 }
14946
14947 return msg;
14948 }
14949
14950 /* send message created by nl80211_build_scan_msg() */
nl80211_send_scan_msg(struct cfg80211_registered_device * rdev,struct sk_buff * msg)14951 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14952 struct sk_buff *msg)
14953 {
14954 if (!msg)
14955 return;
14956
14957 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14958 NL80211_MCGRP_SCAN, GFP_KERNEL);
14959 }
14960
nl80211_send_sched_scan(struct cfg80211_sched_scan_request * req,u32 cmd)14961 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14962 {
14963 struct sk_buff *msg;
14964
14965 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14966 if (!msg)
14967 return;
14968
14969 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14970 nlmsg_free(msg);
14971 return;
14972 }
14973
14974 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14975 NL80211_MCGRP_SCAN, GFP_KERNEL);
14976 }
14977
nl80211_reg_change_event_fill(struct sk_buff * msg,struct regulatory_request * request)14978 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14979 struct regulatory_request *request)
14980 {
14981 /* Userspace can always count this one always being set */
14982 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14983 goto nla_put_failure;
14984
14985 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14986 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14987 NL80211_REGDOM_TYPE_WORLD))
14988 goto nla_put_failure;
14989 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
14990 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14991 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
14992 goto nla_put_failure;
14993 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
14994 request->intersect) {
14995 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
14996 NL80211_REGDOM_TYPE_INTERSECTION))
14997 goto nla_put_failure;
14998 } else {
14999 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15000 NL80211_REGDOM_TYPE_COUNTRY) ||
15001 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15002 request->alpha2))
15003 goto nla_put_failure;
15004 }
15005
15006 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15007 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15008
15009 if (wiphy &&
15010 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15011 goto nla_put_failure;
15012
15013 if (wiphy &&
15014 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15015 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15016 goto nla_put_failure;
15017 }
15018
15019 return true;
15020
15021 nla_put_failure:
15022 return false;
15023 }
15024
15025 /*
15026 * This can happen on global regulatory changes or device specific settings
15027 * based on custom regulatory domains.
15028 */
nl80211_common_reg_change_event(enum nl80211_commands cmd_id,struct regulatory_request * request)15029 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15030 struct regulatory_request *request)
15031 {
15032 struct sk_buff *msg;
15033 void *hdr;
15034
15035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15036 if (!msg)
15037 return;
15038
15039 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15040 if (!hdr)
15041 goto nla_put_failure;
15042
15043 if (!nl80211_reg_change_event_fill(msg, request))
15044 goto nla_put_failure;
15045
15046 genlmsg_end(msg, hdr);
15047
15048 rcu_read_lock();
15049 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15050 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15051 rcu_read_unlock();
15052
15053 return;
15054
15055 nla_put_failure:
15056 nlmsg_free(msg);
15057 }
15058
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)15059 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15060 struct net_device *netdev,
15061 const u8 *buf, size_t len,
15062 enum nl80211_commands cmd, gfp_t gfp,
15063 int uapsd_queues, const u8 *req_ies,
15064 size_t req_ies_len)
15065 {
15066 struct sk_buff *msg;
15067 void *hdr;
15068
15069 msg = nlmsg_new(100 + len + req_ies_len, gfp);
15070 if (!msg)
15071 return;
15072
15073 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15074 if (!hdr) {
15075 nlmsg_free(msg);
15076 return;
15077 }
15078
15079 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15080 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15081 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15082 (req_ies &&
15083 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15084 goto nla_put_failure;
15085
15086 if (uapsd_queues >= 0) {
15087 struct nlattr *nla_wmm =
15088 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15089 if (!nla_wmm)
15090 goto nla_put_failure;
15091
15092 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15093 uapsd_queues))
15094 goto nla_put_failure;
15095
15096 nla_nest_end(msg, nla_wmm);
15097 }
15098
15099 genlmsg_end(msg, hdr);
15100
15101 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15102 NL80211_MCGRP_MLME, gfp);
15103 return;
15104
15105 nla_put_failure:
15106 nlmsg_free(msg);
15107 }
15108
nl80211_send_rx_auth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15109 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15110 struct net_device *netdev, const u8 *buf,
15111 size_t len, gfp_t gfp)
15112 {
15113 nl80211_send_mlme_event(rdev, netdev, buf, len,
15114 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15115 }
15116
nl80211_send_rx_assoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp,int uapsd_queues,const u8 * req_ies,size_t req_ies_len)15117 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15118 struct net_device *netdev, const u8 *buf,
15119 size_t len, gfp_t gfp, int uapsd_queues,
15120 const u8 *req_ies, size_t req_ies_len)
15121 {
15122 nl80211_send_mlme_event(rdev, netdev, buf, len,
15123 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15124 req_ies, req_ies_len);
15125 }
15126
nl80211_send_deauth(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15127 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15128 struct net_device *netdev, const u8 *buf,
15129 size_t len, gfp_t gfp)
15130 {
15131 nl80211_send_mlme_event(rdev, netdev, buf, len,
15132 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15133 }
15134
nl80211_send_disassoc(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * buf,size_t len,gfp_t gfp)15135 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15136 struct net_device *netdev, const u8 *buf,
15137 size_t len, gfp_t gfp)
15138 {
15139 nl80211_send_mlme_event(rdev, netdev, buf, len,
15140 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15141 }
15142
cfg80211_rx_unprot_mlme_mgmt(struct net_device * dev,const u8 * buf,size_t len)15143 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15144 size_t len)
15145 {
15146 struct wireless_dev *wdev = dev->ieee80211_ptr;
15147 struct wiphy *wiphy = wdev->wiphy;
15148 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15149 const struct ieee80211_mgmt *mgmt = (void *)buf;
15150 u32 cmd;
15151
15152 if (WARN_ON(len < 2))
15153 return;
15154
15155 if (ieee80211_is_deauth(mgmt->frame_control))
15156 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15157 else
15158 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15159
15160 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15161 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15162 NULL, 0);
15163 }
15164 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15165
nl80211_send_mlme_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,int cmd,const u8 * addr,gfp_t gfp)15166 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15167 struct net_device *netdev, int cmd,
15168 const u8 *addr, gfp_t gfp)
15169 {
15170 struct sk_buff *msg;
15171 void *hdr;
15172
15173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15174 if (!msg)
15175 return;
15176
15177 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15178 if (!hdr) {
15179 nlmsg_free(msg);
15180 return;
15181 }
15182
15183 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15184 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15185 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15186 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15187 goto nla_put_failure;
15188
15189 genlmsg_end(msg, hdr);
15190
15191 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15192 NL80211_MCGRP_MLME, gfp);
15193 return;
15194
15195 nla_put_failure:
15196 nlmsg_free(msg);
15197 }
15198
nl80211_send_auth_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)15199 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15200 struct net_device *netdev, const u8 *addr,
15201 gfp_t gfp)
15202 {
15203 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15204 addr, gfp);
15205 }
15206
nl80211_send_assoc_timeout(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * addr,gfp_t gfp)15207 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15208 struct net_device *netdev, const u8 *addr,
15209 gfp_t gfp)
15210 {
15211 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15212 addr, gfp);
15213 }
15214
nl80211_send_connect_result(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_connect_resp_params * cr,gfp_t gfp)15215 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15216 struct net_device *netdev,
15217 struct cfg80211_connect_resp_params *cr,
15218 gfp_t gfp)
15219 {
15220 struct sk_buff *msg;
15221 void *hdr;
15222
15223 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15224 cr->fils.kek_len + cr->fils.pmk_len +
15225 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15226 if (!msg)
15227 return;
15228
15229 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15230 if (!hdr) {
15231 nlmsg_free(msg);
15232 return;
15233 }
15234
15235 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15236 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15237 (cr->bssid &&
15238 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15239 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15240 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15241 cr->status) ||
15242 (cr->status < 0 &&
15243 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15244 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15245 cr->timeout_reason))) ||
15246 (cr->req_ie &&
15247 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15248 (cr->resp_ie &&
15249 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15250 cr->resp_ie)) ||
15251 (cr->fils.update_erp_next_seq_num &&
15252 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15253 cr->fils.erp_next_seq_num)) ||
15254 (cr->status == WLAN_STATUS_SUCCESS &&
15255 ((cr->fils.kek &&
15256 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15257 cr->fils.kek)) ||
15258 (cr->fils.pmk &&
15259 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15260 (cr->fils.pmkid &&
15261 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15262 goto nla_put_failure;
15263
15264 genlmsg_end(msg, hdr);
15265
15266 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15267 NL80211_MCGRP_MLME, gfp);
15268 return;
15269
15270 nla_put_failure:
15271 nlmsg_free(msg);
15272 }
15273
nl80211_send_roamed(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_roam_info * info,gfp_t gfp)15274 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15275 struct net_device *netdev,
15276 struct cfg80211_roam_info *info, gfp_t gfp)
15277 {
15278 struct sk_buff *msg;
15279 void *hdr;
15280 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15281
15282 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15283 info->fils.kek_len + info->fils.pmk_len +
15284 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15285 if (!msg)
15286 return;
15287
15288 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15289 if (!hdr) {
15290 nlmsg_free(msg);
15291 return;
15292 }
15293
15294 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15295 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15296 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15297 (info->req_ie &&
15298 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15299 info->req_ie)) ||
15300 (info->resp_ie &&
15301 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15302 info->resp_ie)) ||
15303 (info->fils.update_erp_next_seq_num &&
15304 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15305 info->fils.erp_next_seq_num)) ||
15306 (info->fils.kek &&
15307 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15308 info->fils.kek)) ||
15309 (info->fils.pmk &&
15310 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15311 (info->fils.pmkid &&
15312 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15313 goto nla_put_failure;
15314
15315 genlmsg_end(msg, hdr);
15316
15317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15318 NL80211_MCGRP_MLME, gfp);
15319 return;
15320
15321 nla_put_failure:
15322 nlmsg_free(msg);
15323 }
15324
nl80211_send_port_authorized(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid)15325 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15326 struct net_device *netdev, const u8 *bssid)
15327 {
15328 struct sk_buff *msg;
15329 void *hdr;
15330
15331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15332 if (!msg)
15333 return;
15334
15335 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15336 if (!hdr) {
15337 nlmsg_free(msg);
15338 return;
15339 }
15340
15341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15342 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15343 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15344 goto nla_put_failure;
15345
15346 genlmsg_end(msg, hdr);
15347
15348 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15349 NL80211_MCGRP_MLME, GFP_KERNEL);
15350 return;
15351
15352 nla_put_failure:
15353 nlmsg_free(msg);
15354 }
15355
nl80211_send_disconnected(struct cfg80211_registered_device * rdev,struct net_device * netdev,u16 reason,const u8 * ie,size_t ie_len,bool from_ap)15356 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15357 struct net_device *netdev, u16 reason,
15358 const u8 *ie, size_t ie_len, bool from_ap)
15359 {
15360 struct sk_buff *msg;
15361 void *hdr;
15362
15363 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15364 if (!msg)
15365 return;
15366
15367 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15368 if (!hdr) {
15369 nlmsg_free(msg);
15370 return;
15371 }
15372
15373 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15374 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15375 (reason &&
15376 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15377 (from_ap &&
15378 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15379 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15380 goto nla_put_failure;
15381
15382 genlmsg_end(msg, hdr);
15383
15384 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15385 NL80211_MCGRP_MLME, GFP_KERNEL);
15386 return;
15387
15388 nla_put_failure:
15389 nlmsg_free(msg);
15390 }
15391
nl80211_send_ibss_bssid(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,gfp_t gfp)15392 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15393 struct net_device *netdev, const u8 *bssid,
15394 gfp_t gfp)
15395 {
15396 struct sk_buff *msg;
15397 void *hdr;
15398
15399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15400 if (!msg)
15401 return;
15402
15403 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15404 if (!hdr) {
15405 nlmsg_free(msg);
15406 return;
15407 }
15408
15409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15410 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15411 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15412 goto nla_put_failure;
15413
15414 genlmsg_end(msg, hdr);
15415
15416 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15417 NL80211_MCGRP_MLME, gfp);
15418 return;
15419
15420 nla_put_failure:
15421 nlmsg_free(msg);
15422 }
15423
cfg80211_notify_new_peer_candidate(struct net_device * dev,const u8 * addr,const u8 * ie,u8 ie_len,int sig_dbm,gfp_t gfp)15424 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15425 const u8 *ie, u8 ie_len,
15426 int sig_dbm, gfp_t gfp)
15427 {
15428 struct wireless_dev *wdev = dev->ieee80211_ptr;
15429 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15430 struct sk_buff *msg;
15431 void *hdr;
15432
15433 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15434 return;
15435
15436 trace_cfg80211_notify_new_peer_candidate(dev, addr);
15437
15438 msg = nlmsg_new(100 + ie_len, gfp);
15439 if (!msg)
15440 return;
15441
15442 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15443 if (!hdr) {
15444 nlmsg_free(msg);
15445 return;
15446 }
15447
15448 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15449 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15450 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15451 (ie_len && ie &&
15452 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15453 (sig_dbm &&
15454 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15455 goto nla_put_failure;
15456
15457 genlmsg_end(msg, hdr);
15458
15459 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15460 NL80211_MCGRP_MLME, gfp);
15461 return;
15462
15463 nla_put_failure:
15464 nlmsg_free(msg);
15465 }
15466 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15467
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)15468 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15469 struct net_device *netdev, const u8 *addr,
15470 enum nl80211_key_type key_type, int key_id,
15471 const u8 *tsc, gfp_t gfp)
15472 {
15473 struct sk_buff *msg;
15474 void *hdr;
15475
15476 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15477 if (!msg)
15478 return;
15479
15480 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15481 if (!hdr) {
15482 nlmsg_free(msg);
15483 return;
15484 }
15485
15486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15487 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15488 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15489 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15490 (key_id != -1 &&
15491 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15492 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15493 goto nla_put_failure;
15494
15495 genlmsg_end(msg, hdr);
15496
15497 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15498 NL80211_MCGRP_MLME, gfp);
15499 return;
15500
15501 nla_put_failure:
15502 nlmsg_free(msg);
15503 }
15504
nl80211_send_beacon_hint_event(struct wiphy * wiphy,struct ieee80211_channel * channel_before,struct ieee80211_channel * channel_after)15505 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15506 struct ieee80211_channel *channel_before,
15507 struct ieee80211_channel *channel_after)
15508 {
15509 struct sk_buff *msg;
15510 void *hdr;
15511 struct nlattr *nl_freq;
15512
15513 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15514 if (!msg)
15515 return;
15516
15517 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15518 if (!hdr) {
15519 nlmsg_free(msg);
15520 return;
15521 }
15522
15523 /*
15524 * Since we are applying the beacon hint to a wiphy we know its
15525 * wiphy_idx is valid
15526 */
15527 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15528 goto nla_put_failure;
15529
15530 /* Before */
15531 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15532 if (!nl_freq)
15533 goto nla_put_failure;
15534
15535 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15536 goto nla_put_failure;
15537 nla_nest_end(msg, nl_freq);
15538
15539 /* After */
15540 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15541 if (!nl_freq)
15542 goto nla_put_failure;
15543
15544 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15545 goto nla_put_failure;
15546 nla_nest_end(msg, nl_freq);
15547
15548 genlmsg_end(msg, hdr);
15549
15550 rcu_read_lock();
15551 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15552 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15553 rcu_read_unlock();
15554
15555 return;
15556
15557 nla_put_failure:
15558 nlmsg_free(msg);
15559 }
15560
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)15561 static void nl80211_send_remain_on_chan_event(
15562 int cmd, struct cfg80211_registered_device *rdev,
15563 struct wireless_dev *wdev, u64 cookie,
15564 struct ieee80211_channel *chan,
15565 unsigned int duration, gfp_t gfp)
15566 {
15567 struct sk_buff *msg;
15568 void *hdr;
15569
15570 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15571 if (!msg)
15572 return;
15573
15574 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15575 if (!hdr) {
15576 nlmsg_free(msg);
15577 return;
15578 }
15579
15580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15581 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15582 wdev->netdev->ifindex)) ||
15583 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15584 NL80211_ATTR_PAD) ||
15585 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15586 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15587 NL80211_CHAN_NO_HT) ||
15588 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15589 NL80211_ATTR_PAD))
15590 goto nla_put_failure;
15591
15592 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15593 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15594 goto nla_put_failure;
15595
15596 genlmsg_end(msg, hdr);
15597
15598 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15599 NL80211_MCGRP_MLME, gfp);
15600 return;
15601
15602 nla_put_failure:
15603 nlmsg_free(msg);
15604 }
15605
cfg80211_ready_on_channel(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,unsigned int duration,gfp_t gfp)15606 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15607 struct ieee80211_channel *chan,
15608 unsigned int duration, gfp_t gfp)
15609 {
15610 struct wiphy *wiphy = wdev->wiphy;
15611 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15612
15613 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15614 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15615 rdev, wdev, cookie, chan,
15616 duration, gfp);
15617 }
15618 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15619
cfg80211_remain_on_channel_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)15620 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15621 struct ieee80211_channel *chan,
15622 gfp_t gfp)
15623 {
15624 struct wiphy *wiphy = wdev->wiphy;
15625 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15626
15627 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15628 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15629 rdev, wdev, cookie, chan, 0, gfp);
15630 }
15631 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15632
cfg80211_tx_mgmt_expired(struct wireless_dev * wdev,u64 cookie,struct ieee80211_channel * chan,gfp_t gfp)15633 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15634 struct ieee80211_channel *chan,
15635 gfp_t gfp)
15636 {
15637 struct wiphy *wiphy = wdev->wiphy;
15638 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15639
15640 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15641 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15642 rdev, wdev, cookie, chan, 0, gfp);
15643 }
15644 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15645
cfg80211_new_sta(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)15646 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15647 struct station_info *sinfo, gfp_t gfp)
15648 {
15649 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15650 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15651 struct sk_buff *msg;
15652
15653 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15654
15655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15656 if (!msg)
15657 return;
15658
15659 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15660 rdev, dev, mac_addr, sinfo) < 0) {
15661 nlmsg_free(msg);
15662 return;
15663 }
15664
15665 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15666 NL80211_MCGRP_MLME, gfp);
15667 }
15668 EXPORT_SYMBOL(cfg80211_new_sta);
15669
cfg80211_del_sta_sinfo(struct net_device * dev,const u8 * mac_addr,struct station_info * sinfo,gfp_t gfp)15670 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15671 struct station_info *sinfo, gfp_t gfp)
15672 {
15673 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15674 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15675 struct sk_buff *msg;
15676 struct station_info empty_sinfo = {};
15677
15678 if (!sinfo)
15679 sinfo = &empty_sinfo;
15680
15681 trace_cfg80211_del_sta(dev, mac_addr);
15682
15683 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15684 if (!msg) {
15685 cfg80211_sinfo_release_content(sinfo);
15686 return;
15687 }
15688
15689 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15690 rdev, dev, mac_addr, sinfo) < 0) {
15691 nlmsg_free(msg);
15692 return;
15693 }
15694
15695 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15696 NL80211_MCGRP_MLME, gfp);
15697 }
15698 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15699
cfg80211_conn_failed(struct net_device * dev,const u8 * mac_addr,enum nl80211_connect_failed_reason reason,gfp_t gfp)15700 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15701 enum nl80211_connect_failed_reason reason,
15702 gfp_t gfp)
15703 {
15704 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15706 struct sk_buff *msg;
15707 void *hdr;
15708
15709 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15710 if (!msg)
15711 return;
15712
15713 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15714 if (!hdr) {
15715 nlmsg_free(msg);
15716 return;
15717 }
15718
15719 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15720 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15721 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15722 goto nla_put_failure;
15723
15724 genlmsg_end(msg, hdr);
15725
15726 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15727 NL80211_MCGRP_MLME, gfp);
15728 return;
15729
15730 nla_put_failure:
15731 nlmsg_free(msg);
15732 }
15733 EXPORT_SYMBOL(cfg80211_conn_failed);
15734
__nl80211_unexpected_frame(struct net_device * dev,u8 cmd,const u8 * addr,gfp_t gfp)15735 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15736 const u8 *addr, gfp_t gfp)
15737 {
15738 struct wireless_dev *wdev = dev->ieee80211_ptr;
15739 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15740 struct sk_buff *msg;
15741 void *hdr;
15742 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15743
15744 if (!nlportid)
15745 return false;
15746
15747 msg = nlmsg_new(100, gfp);
15748 if (!msg)
15749 return true;
15750
15751 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15752 if (!hdr) {
15753 nlmsg_free(msg);
15754 return true;
15755 }
15756
15757 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15758 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15759 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15760 goto nla_put_failure;
15761
15762 genlmsg_end(msg, hdr);
15763 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15764 return true;
15765
15766 nla_put_failure:
15767 nlmsg_free(msg);
15768 return true;
15769 }
15770
cfg80211_rx_spurious_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)15771 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15772 const u8 *addr, gfp_t gfp)
15773 {
15774 struct wireless_dev *wdev = dev->ieee80211_ptr;
15775 bool ret;
15776
15777 trace_cfg80211_rx_spurious_frame(dev, addr);
15778
15779 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15780 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15781 trace_cfg80211_return_bool(false);
15782 return false;
15783 }
15784 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15785 addr, gfp);
15786 trace_cfg80211_return_bool(ret);
15787 return ret;
15788 }
15789 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15790
cfg80211_rx_unexpected_4addr_frame(struct net_device * dev,const u8 * addr,gfp_t gfp)15791 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15792 const u8 *addr, gfp_t gfp)
15793 {
15794 struct wireless_dev *wdev = dev->ieee80211_ptr;
15795 bool ret;
15796
15797 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15798
15799 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15800 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15801 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15802 trace_cfg80211_return_bool(false);
15803 return false;
15804 }
15805 ret = __nl80211_unexpected_frame(dev,
15806 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15807 addr, gfp);
15808 trace_cfg80211_return_bool(ret);
15809 return ret;
15810 }
15811 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15812
nl80211_send_mgmt(struct cfg80211_registered_device * rdev,struct wireless_dev * wdev,u32 nlportid,int freq,int sig_dbm,const u8 * buf,size_t len,u32 flags,gfp_t gfp)15813 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15814 struct wireless_dev *wdev, u32 nlportid,
15815 int freq, int sig_dbm,
15816 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15817 {
15818 struct net_device *netdev = wdev->netdev;
15819 struct sk_buff *msg;
15820 void *hdr;
15821
15822 msg = nlmsg_new(100 + len, gfp);
15823 if (!msg)
15824 return -ENOMEM;
15825
15826 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15827 if (!hdr) {
15828 nlmsg_free(msg);
15829 return -ENOMEM;
15830 }
15831
15832 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15833 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15834 netdev->ifindex)) ||
15835 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15836 NL80211_ATTR_PAD) ||
15837 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15838 (sig_dbm &&
15839 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15840 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15841 (flags &&
15842 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15843 goto nla_put_failure;
15844
15845 genlmsg_end(msg, hdr);
15846
15847 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15848
15849 nla_put_failure:
15850 nlmsg_free(msg);
15851 return -ENOBUFS;
15852 }
15853
cfg80211_mgmt_tx_status(struct wireless_dev * wdev,u64 cookie,const u8 * buf,size_t len,bool ack,gfp_t gfp)15854 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15855 const u8 *buf, size_t len, bool ack, gfp_t gfp)
15856 {
15857 struct wiphy *wiphy = wdev->wiphy;
15858 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15859 struct net_device *netdev = wdev->netdev;
15860 struct sk_buff *msg;
15861 void *hdr;
15862
15863 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15864
15865 msg = nlmsg_new(100 + len, gfp);
15866 if (!msg)
15867 return;
15868
15869 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15870 if (!hdr) {
15871 nlmsg_free(msg);
15872 return;
15873 }
15874
15875 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15876 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15877 netdev->ifindex)) ||
15878 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15879 NL80211_ATTR_PAD) ||
15880 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15881 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15882 NL80211_ATTR_PAD) ||
15883 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15884 goto nla_put_failure;
15885
15886 genlmsg_end(msg, hdr);
15887
15888 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15889 NL80211_MCGRP_MLME, gfp);
15890 return;
15891
15892 nla_put_failure:
15893 nlmsg_free(msg);
15894 }
15895 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15896
__nl80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted,gfp_t gfp)15897 static int __nl80211_rx_control_port(struct net_device *dev,
15898 struct sk_buff *skb,
15899 bool unencrypted, gfp_t gfp)
15900 {
15901 struct wireless_dev *wdev = dev->ieee80211_ptr;
15902 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15903 struct ethhdr *ehdr = eth_hdr(skb);
15904 const u8 *addr = ehdr->h_source;
15905 u16 proto = be16_to_cpu(skb->protocol);
15906 struct sk_buff *msg;
15907 void *hdr;
15908 struct nlattr *frame;
15909
15910 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15911
15912 if (!nlportid)
15913 return -ENOENT;
15914
15915 msg = nlmsg_new(100 + skb->len, gfp);
15916 if (!msg)
15917 return -ENOMEM;
15918
15919 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15920 if (!hdr) {
15921 nlmsg_free(msg);
15922 return -ENOBUFS;
15923 }
15924
15925 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15926 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15927 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15928 NL80211_ATTR_PAD) ||
15929 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15930 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15931 (unencrypted && nla_put_flag(msg,
15932 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15933 goto nla_put_failure;
15934
15935 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15936 if (!frame)
15937 goto nla_put_failure;
15938
15939 skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15940 genlmsg_end(msg, hdr);
15941
15942 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15943
15944 nla_put_failure:
15945 nlmsg_free(msg);
15946 return -ENOBUFS;
15947 }
15948
cfg80211_rx_control_port(struct net_device * dev,struct sk_buff * skb,bool unencrypted)15949 bool cfg80211_rx_control_port(struct net_device *dev,
15950 struct sk_buff *skb, bool unencrypted)
15951 {
15952 int ret;
15953
15954 trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15955 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15956 trace_cfg80211_return_bool(ret == 0);
15957 return ret == 0;
15958 }
15959 EXPORT_SYMBOL(cfg80211_rx_control_port);
15960
cfg80211_prepare_cqm(struct net_device * dev,const char * mac,gfp_t gfp)15961 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15962 const char *mac, gfp_t gfp)
15963 {
15964 struct wireless_dev *wdev = dev->ieee80211_ptr;
15965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15966 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15967 void **cb;
15968
15969 if (!msg)
15970 return NULL;
15971
15972 cb = (void **)msg->cb;
15973
15974 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15975 if (!cb[0]) {
15976 nlmsg_free(msg);
15977 return NULL;
15978 }
15979
15980 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15981 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15982 goto nla_put_failure;
15983
15984 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15985 goto nla_put_failure;
15986
15987 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
15988 if (!cb[1])
15989 goto nla_put_failure;
15990
15991 cb[2] = rdev;
15992
15993 return msg;
15994 nla_put_failure:
15995 nlmsg_free(msg);
15996 return NULL;
15997 }
15998
cfg80211_send_cqm(struct sk_buff * msg,gfp_t gfp)15999 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16000 {
16001 void **cb = (void **)msg->cb;
16002 struct cfg80211_registered_device *rdev = cb[2];
16003
16004 nla_nest_end(msg, cb[1]);
16005 genlmsg_end(msg, cb[0]);
16006
16007 memset(msg->cb, 0, sizeof(msg->cb));
16008
16009 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16010 NL80211_MCGRP_MLME, gfp);
16011 }
16012
cfg80211_cqm_rssi_notify(struct net_device * dev,enum nl80211_cqm_rssi_threshold_event rssi_event,s32 rssi_level,gfp_t gfp)16013 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16014 enum nl80211_cqm_rssi_threshold_event rssi_event,
16015 s32 rssi_level, gfp_t gfp)
16016 {
16017 struct sk_buff *msg;
16018 struct wireless_dev *wdev = dev->ieee80211_ptr;
16019 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16020
16021 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16022
16023 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16024 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16025 return;
16026
16027 if (wdev->cqm_config) {
16028 wdev->cqm_config->last_rssi_event_value = rssi_level;
16029
16030 cfg80211_cqm_rssi_update(rdev, dev);
16031
16032 if (rssi_level == 0)
16033 rssi_level = wdev->cqm_config->last_rssi_event_value;
16034 }
16035
16036 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16037 if (!msg)
16038 return;
16039
16040 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16041 rssi_event))
16042 goto nla_put_failure;
16043
16044 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16045 rssi_level))
16046 goto nla_put_failure;
16047
16048 cfg80211_send_cqm(msg, gfp);
16049
16050 return;
16051
16052 nla_put_failure:
16053 nlmsg_free(msg);
16054 }
16055 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16056
cfg80211_cqm_txe_notify(struct net_device * dev,const u8 * peer,u32 num_packets,u32 rate,u32 intvl,gfp_t gfp)16057 void cfg80211_cqm_txe_notify(struct net_device *dev,
16058 const u8 *peer, u32 num_packets,
16059 u32 rate, u32 intvl, gfp_t gfp)
16060 {
16061 struct sk_buff *msg;
16062
16063 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16064 if (!msg)
16065 return;
16066
16067 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16068 goto nla_put_failure;
16069
16070 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16071 goto nla_put_failure;
16072
16073 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16074 goto nla_put_failure;
16075
16076 cfg80211_send_cqm(msg, gfp);
16077 return;
16078
16079 nla_put_failure:
16080 nlmsg_free(msg);
16081 }
16082 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16083
cfg80211_cqm_pktloss_notify(struct net_device * dev,const u8 * peer,u32 num_packets,gfp_t gfp)16084 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16085 const u8 *peer, u32 num_packets, gfp_t gfp)
16086 {
16087 struct sk_buff *msg;
16088
16089 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16090
16091 msg = cfg80211_prepare_cqm(dev, peer, gfp);
16092 if (!msg)
16093 return;
16094
16095 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16096 goto nla_put_failure;
16097
16098 cfg80211_send_cqm(msg, gfp);
16099 return;
16100
16101 nla_put_failure:
16102 nlmsg_free(msg);
16103 }
16104 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16105
cfg80211_cqm_beacon_loss_notify(struct net_device * dev,gfp_t gfp)16106 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16107 {
16108 struct sk_buff *msg;
16109
16110 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16111 if (!msg)
16112 return;
16113
16114 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16115 goto nla_put_failure;
16116
16117 cfg80211_send_cqm(msg, gfp);
16118 return;
16119
16120 nla_put_failure:
16121 nlmsg_free(msg);
16122 }
16123 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16124
nl80211_gtk_rekey_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16125 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16126 struct net_device *netdev, const u8 *bssid,
16127 const u8 *replay_ctr, gfp_t gfp)
16128 {
16129 struct sk_buff *msg;
16130 struct nlattr *rekey_attr;
16131 void *hdr;
16132
16133 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16134 if (!msg)
16135 return;
16136
16137 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16138 if (!hdr) {
16139 nlmsg_free(msg);
16140 return;
16141 }
16142
16143 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16144 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16145 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16146 goto nla_put_failure;
16147
16148 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16149 if (!rekey_attr)
16150 goto nla_put_failure;
16151
16152 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16153 NL80211_REPLAY_CTR_LEN, replay_ctr))
16154 goto nla_put_failure;
16155
16156 nla_nest_end(msg, rekey_attr);
16157
16158 genlmsg_end(msg, hdr);
16159
16160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16161 NL80211_MCGRP_MLME, gfp);
16162 return;
16163
16164 nla_put_failure:
16165 nlmsg_free(msg);
16166 }
16167
cfg80211_gtk_rekey_notify(struct net_device * dev,const u8 * bssid,const u8 * replay_ctr,gfp_t gfp)16168 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16169 const u8 *replay_ctr, gfp_t gfp)
16170 {
16171 struct wireless_dev *wdev = dev->ieee80211_ptr;
16172 struct wiphy *wiphy = wdev->wiphy;
16173 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16174
16175 trace_cfg80211_gtk_rekey_notify(dev, bssid);
16176 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16177 }
16178 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16179
16180 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)16181 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16182 struct net_device *netdev, int index,
16183 const u8 *bssid, bool preauth, gfp_t gfp)
16184 {
16185 struct sk_buff *msg;
16186 struct nlattr *attr;
16187 void *hdr;
16188
16189 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16190 if (!msg)
16191 return;
16192
16193 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16194 if (!hdr) {
16195 nlmsg_free(msg);
16196 return;
16197 }
16198
16199 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16200 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16201 goto nla_put_failure;
16202
16203 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16204 if (!attr)
16205 goto nla_put_failure;
16206
16207 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16208 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16209 (preauth &&
16210 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16211 goto nla_put_failure;
16212
16213 nla_nest_end(msg, attr);
16214
16215 genlmsg_end(msg, hdr);
16216
16217 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16218 NL80211_MCGRP_MLME, gfp);
16219 return;
16220
16221 nla_put_failure:
16222 nlmsg_free(msg);
16223 }
16224
cfg80211_pmksa_candidate_notify(struct net_device * dev,int index,const u8 * bssid,bool preauth,gfp_t gfp)16225 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16226 const u8 *bssid, bool preauth, gfp_t gfp)
16227 {
16228 struct wireless_dev *wdev = dev->ieee80211_ptr;
16229 struct wiphy *wiphy = wdev->wiphy;
16230 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16231
16232 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16233 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16234 }
16235 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16236
nl80211_ch_switch_notify(struct cfg80211_registered_device * rdev,struct net_device * netdev,struct cfg80211_chan_def * chandef,gfp_t gfp,enum nl80211_commands notif,u8 count)16237 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16238 struct net_device *netdev,
16239 struct cfg80211_chan_def *chandef,
16240 gfp_t gfp,
16241 enum nl80211_commands notif,
16242 u8 count)
16243 {
16244 struct sk_buff *msg;
16245 void *hdr;
16246
16247 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16248 if (!msg)
16249 return;
16250
16251 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16252 if (!hdr) {
16253 nlmsg_free(msg);
16254 return;
16255 }
16256
16257 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16258 goto nla_put_failure;
16259
16260 if (nl80211_send_chandef(msg, chandef))
16261 goto nla_put_failure;
16262
16263 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16264 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16265 goto nla_put_failure;
16266
16267 genlmsg_end(msg, hdr);
16268
16269 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16270 NL80211_MCGRP_MLME, gfp);
16271 return;
16272
16273 nla_put_failure:
16274 nlmsg_free(msg);
16275 }
16276
cfg80211_ch_switch_notify(struct net_device * dev,struct cfg80211_chan_def * chandef)16277 void cfg80211_ch_switch_notify(struct net_device *dev,
16278 struct cfg80211_chan_def *chandef)
16279 {
16280 struct wireless_dev *wdev = dev->ieee80211_ptr;
16281 struct wiphy *wiphy = wdev->wiphy;
16282 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16283
16284 ASSERT_WDEV_LOCK(wdev);
16285
16286 trace_cfg80211_ch_switch_notify(dev, chandef);
16287
16288 wdev->chandef = *chandef;
16289 wdev->preset_chandef = *chandef;
16290
16291 if (wdev->iftype == NL80211_IFTYPE_STATION &&
16292 !WARN_ON(!wdev->current_bss))
16293 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16294
16295 cfg80211_sched_dfs_chan_update(rdev);
16296
16297 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16298 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16299 }
16300 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16301
cfg80211_ch_switch_started_notify(struct net_device * dev,struct cfg80211_chan_def * chandef,u8 count)16302 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16303 struct cfg80211_chan_def *chandef,
16304 u8 count)
16305 {
16306 struct wireless_dev *wdev = dev->ieee80211_ptr;
16307 struct wiphy *wiphy = wdev->wiphy;
16308 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16309
16310 trace_cfg80211_ch_switch_started_notify(dev, chandef);
16311
16312 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16313 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16314 }
16315 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16316
16317 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)16318 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16319 const struct cfg80211_chan_def *chandef,
16320 enum nl80211_radar_event event,
16321 struct net_device *netdev, gfp_t gfp)
16322 {
16323 struct sk_buff *msg;
16324 void *hdr;
16325
16326 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16327 if (!msg)
16328 return;
16329
16330 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16331 if (!hdr) {
16332 nlmsg_free(msg);
16333 return;
16334 }
16335
16336 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16337 goto nla_put_failure;
16338
16339 /* NOP and radar events don't need a netdev parameter */
16340 if (netdev) {
16341 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16342
16343 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16344 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16345 NL80211_ATTR_PAD))
16346 goto nla_put_failure;
16347 }
16348
16349 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16350 goto nla_put_failure;
16351
16352 if (nl80211_send_chandef(msg, chandef))
16353 goto nla_put_failure;
16354
16355 genlmsg_end(msg, hdr);
16356
16357 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16358 NL80211_MCGRP_MLME, gfp);
16359 return;
16360
16361 nla_put_failure:
16362 nlmsg_free(msg);
16363 }
16364
cfg80211_sta_opmode_change_notify(struct net_device * dev,const u8 * mac,struct sta_opmode_info * sta_opmode,gfp_t gfp)16365 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16366 struct sta_opmode_info *sta_opmode,
16367 gfp_t gfp)
16368 {
16369 struct sk_buff *msg;
16370 struct wireless_dev *wdev = dev->ieee80211_ptr;
16371 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16372 void *hdr;
16373
16374 if (WARN_ON(!mac))
16375 return;
16376
16377 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16378 if (!msg)
16379 return;
16380
16381 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16382 if (!hdr) {
16383 nlmsg_free(msg);
16384 return;
16385 }
16386
16387 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16388 goto nla_put_failure;
16389
16390 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16391 goto nla_put_failure;
16392
16393 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16394 goto nla_put_failure;
16395
16396 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16397 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16398 goto nla_put_failure;
16399
16400 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16401 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16402 goto nla_put_failure;
16403
16404 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16405 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16406 goto nla_put_failure;
16407
16408 genlmsg_end(msg, hdr);
16409
16410 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16411 NL80211_MCGRP_MLME, gfp);
16412
16413 return;
16414
16415 nla_put_failure:
16416 nlmsg_free(msg);
16417 }
16418 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16419
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)16420 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16421 u64 cookie, bool acked, s32 ack_signal,
16422 bool is_valid_ack_signal, gfp_t gfp)
16423 {
16424 struct wireless_dev *wdev = dev->ieee80211_ptr;
16425 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16426 struct sk_buff *msg;
16427 void *hdr;
16428
16429 trace_cfg80211_probe_status(dev, addr, cookie, acked);
16430
16431 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16432
16433 if (!msg)
16434 return;
16435
16436 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16437 if (!hdr) {
16438 nlmsg_free(msg);
16439 return;
16440 }
16441
16442 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16443 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16444 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16445 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16446 NL80211_ATTR_PAD) ||
16447 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16448 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16449 ack_signal)))
16450 goto nla_put_failure;
16451
16452 genlmsg_end(msg, hdr);
16453
16454 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16455 NL80211_MCGRP_MLME, gfp);
16456 return;
16457
16458 nla_put_failure:
16459 nlmsg_free(msg);
16460 }
16461 EXPORT_SYMBOL(cfg80211_probe_status);
16462
cfg80211_report_obss_beacon(struct wiphy * wiphy,const u8 * frame,size_t len,int freq,int sig_dbm)16463 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16464 const u8 *frame, size_t len,
16465 int freq, int sig_dbm)
16466 {
16467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16468 struct sk_buff *msg;
16469 void *hdr;
16470 struct cfg80211_beacon_registration *reg;
16471
16472 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16473
16474 spin_lock_bh(&rdev->beacon_registrations_lock);
16475 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16476 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16477 if (!msg) {
16478 spin_unlock_bh(&rdev->beacon_registrations_lock);
16479 return;
16480 }
16481
16482 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16483 if (!hdr)
16484 goto nla_put_failure;
16485
16486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16487 (freq &&
16488 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16489 (sig_dbm &&
16490 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16491 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16492 goto nla_put_failure;
16493
16494 genlmsg_end(msg, hdr);
16495
16496 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16497 }
16498 spin_unlock_bh(&rdev->beacon_registrations_lock);
16499 return;
16500
16501 nla_put_failure:
16502 spin_unlock_bh(&rdev->beacon_registrations_lock);
16503 nlmsg_free(msg);
16504 }
16505 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16506
16507 #ifdef CONFIG_PM
cfg80211_net_detect_results(struct sk_buff * msg,struct cfg80211_wowlan_wakeup * wakeup)16508 static int cfg80211_net_detect_results(struct sk_buff *msg,
16509 struct cfg80211_wowlan_wakeup *wakeup)
16510 {
16511 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16512 struct nlattr *nl_results, *nl_match, *nl_freqs;
16513 int i, j;
16514
16515 nl_results = nla_nest_start_noflag(msg,
16516 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16517 if (!nl_results)
16518 return -EMSGSIZE;
16519
16520 for (i = 0; i < nd->n_matches; i++) {
16521 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16522
16523 nl_match = nla_nest_start_noflag(msg, i);
16524 if (!nl_match)
16525 break;
16526
16527 /* The SSID attribute is optional in nl80211, but for
16528 * simplicity reasons it's always present in the
16529 * cfg80211 structure. If a driver can't pass the
16530 * SSID, that needs to be changed. A zero length SSID
16531 * is still a valid SSID (wildcard), so it cannot be
16532 * used for this purpose.
16533 */
16534 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16535 match->ssid.ssid)) {
16536 nla_nest_cancel(msg, nl_match);
16537 goto out;
16538 }
16539
16540 if (match->n_channels) {
16541 nl_freqs = nla_nest_start_noflag(msg,
16542 NL80211_ATTR_SCAN_FREQUENCIES);
16543 if (!nl_freqs) {
16544 nla_nest_cancel(msg, nl_match);
16545 goto out;
16546 }
16547
16548 for (j = 0; j < match->n_channels; j++) {
16549 if (nla_put_u32(msg, j, match->channels[j])) {
16550 nla_nest_cancel(msg, nl_freqs);
16551 nla_nest_cancel(msg, nl_match);
16552 goto out;
16553 }
16554 }
16555
16556 nla_nest_end(msg, nl_freqs);
16557 }
16558
16559 nla_nest_end(msg, nl_match);
16560 }
16561
16562 out:
16563 nla_nest_end(msg, nl_results);
16564 return 0;
16565 }
16566
cfg80211_report_wowlan_wakeup(struct wireless_dev * wdev,struct cfg80211_wowlan_wakeup * wakeup,gfp_t gfp)16567 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16568 struct cfg80211_wowlan_wakeup *wakeup,
16569 gfp_t gfp)
16570 {
16571 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16572 struct sk_buff *msg;
16573 void *hdr;
16574 int size = 200;
16575
16576 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16577
16578 if (wakeup)
16579 size += wakeup->packet_present_len;
16580
16581 msg = nlmsg_new(size, gfp);
16582 if (!msg)
16583 return;
16584
16585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16586 if (!hdr)
16587 goto free_msg;
16588
16589 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16590 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16591 NL80211_ATTR_PAD))
16592 goto free_msg;
16593
16594 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16595 wdev->netdev->ifindex))
16596 goto free_msg;
16597
16598 if (wakeup) {
16599 struct nlattr *reasons;
16600
16601 reasons = nla_nest_start_noflag(msg,
16602 NL80211_ATTR_WOWLAN_TRIGGERS);
16603 if (!reasons)
16604 goto free_msg;
16605
16606 if (wakeup->disconnect &&
16607 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16608 goto free_msg;
16609 if (wakeup->magic_pkt &&
16610 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16611 goto free_msg;
16612 if (wakeup->gtk_rekey_failure &&
16613 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16614 goto free_msg;
16615 if (wakeup->eap_identity_req &&
16616 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16617 goto free_msg;
16618 if (wakeup->four_way_handshake &&
16619 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16620 goto free_msg;
16621 if (wakeup->rfkill_release &&
16622 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16623 goto free_msg;
16624
16625 if (wakeup->pattern_idx >= 0 &&
16626 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16627 wakeup->pattern_idx))
16628 goto free_msg;
16629
16630 if (wakeup->tcp_match &&
16631 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16632 goto free_msg;
16633
16634 if (wakeup->tcp_connlost &&
16635 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16636 goto free_msg;
16637
16638 if (wakeup->tcp_nomoretokens &&
16639 nla_put_flag(msg,
16640 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16641 goto free_msg;
16642
16643 if (wakeup->packet) {
16644 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16645 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16646
16647 if (!wakeup->packet_80211) {
16648 pkt_attr =
16649 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16650 len_attr =
16651 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16652 }
16653
16654 if (wakeup->packet_len &&
16655 nla_put_u32(msg, len_attr, wakeup->packet_len))
16656 goto free_msg;
16657
16658 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16659 wakeup->packet))
16660 goto free_msg;
16661 }
16662
16663 if (wakeup->net_detect &&
16664 cfg80211_net_detect_results(msg, wakeup))
16665 goto free_msg;
16666
16667 nla_nest_end(msg, reasons);
16668 }
16669
16670 genlmsg_end(msg, hdr);
16671
16672 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16673 NL80211_MCGRP_MLME, gfp);
16674 return;
16675
16676 free_msg:
16677 nlmsg_free(msg);
16678 }
16679 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16680 #endif
16681
cfg80211_tdls_oper_request(struct net_device * dev,const u8 * peer,enum nl80211_tdls_operation oper,u16 reason_code,gfp_t gfp)16682 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16683 enum nl80211_tdls_operation oper,
16684 u16 reason_code, gfp_t gfp)
16685 {
16686 struct wireless_dev *wdev = dev->ieee80211_ptr;
16687 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16688 struct sk_buff *msg;
16689 void *hdr;
16690
16691 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16692 reason_code);
16693
16694 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16695 if (!msg)
16696 return;
16697
16698 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16699 if (!hdr) {
16700 nlmsg_free(msg);
16701 return;
16702 }
16703
16704 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16705 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16706 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16707 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16708 (reason_code > 0 &&
16709 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16710 goto nla_put_failure;
16711
16712 genlmsg_end(msg, hdr);
16713
16714 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16715 NL80211_MCGRP_MLME, gfp);
16716 return;
16717
16718 nla_put_failure:
16719 nlmsg_free(msg);
16720 }
16721 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16722
nl80211_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)16723 static int nl80211_netlink_notify(struct notifier_block * nb,
16724 unsigned long state,
16725 void *_notify)
16726 {
16727 struct netlink_notify *notify = _notify;
16728 struct cfg80211_registered_device *rdev;
16729 struct wireless_dev *wdev;
16730 struct cfg80211_beacon_registration *reg, *tmp;
16731
16732 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16733 return NOTIFY_DONE;
16734
16735 rcu_read_lock();
16736
16737 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16738 struct cfg80211_sched_scan_request *sched_scan_req;
16739
16740 list_for_each_entry_rcu(sched_scan_req,
16741 &rdev->sched_scan_req_list,
16742 list) {
16743 if (sched_scan_req->owner_nlportid == notify->portid) {
16744 sched_scan_req->nl_owner_dead = true;
16745 schedule_work(&rdev->sched_scan_stop_wk);
16746 }
16747 }
16748
16749 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16750 cfg80211_mlme_unregister_socket(wdev, notify->portid);
16751
16752 if (wdev->owner_nlportid == notify->portid) {
16753 wdev->nl_owner_dead = true;
16754 schedule_work(&rdev->destroy_work);
16755 } else if (wdev->conn_owner_nlportid == notify->portid) {
16756 schedule_work(&wdev->disconnect_wk);
16757 }
16758
16759 cfg80211_release_pmsr(wdev, notify->portid);
16760 }
16761
16762 spin_lock_bh(&rdev->beacon_registrations_lock);
16763 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16764 list) {
16765 if (reg->nlportid == notify->portid) {
16766 list_del(®->list);
16767 kfree(reg);
16768 break;
16769 }
16770 }
16771 spin_unlock_bh(&rdev->beacon_registrations_lock);
16772 }
16773
16774 rcu_read_unlock();
16775
16776 /*
16777 * It is possible that the user space process that is controlling the
16778 * indoor setting disappeared, so notify the regulatory core.
16779 */
16780 regulatory_netlink_notify(notify->portid);
16781 return NOTIFY_OK;
16782 }
16783
16784 static struct notifier_block nl80211_netlink_notifier = {
16785 .notifier_call = nl80211_netlink_notify,
16786 };
16787
cfg80211_ft_event(struct net_device * netdev,struct cfg80211_ft_event_params * ft_event)16788 void cfg80211_ft_event(struct net_device *netdev,
16789 struct cfg80211_ft_event_params *ft_event)
16790 {
16791 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16792 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16793 struct sk_buff *msg;
16794 void *hdr;
16795
16796 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16797
16798 if (!ft_event->target_ap)
16799 return;
16800
16801 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16802 GFP_KERNEL);
16803 if (!msg)
16804 return;
16805
16806 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16807 if (!hdr)
16808 goto out;
16809
16810 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16811 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16812 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16813 goto out;
16814
16815 if (ft_event->ies &&
16816 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16817 goto out;
16818 if (ft_event->ric_ies &&
16819 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16820 ft_event->ric_ies))
16821 goto out;
16822
16823 genlmsg_end(msg, hdr);
16824
16825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16826 NL80211_MCGRP_MLME, GFP_KERNEL);
16827 return;
16828 out:
16829 nlmsg_free(msg);
16830 }
16831 EXPORT_SYMBOL(cfg80211_ft_event);
16832
cfg80211_crit_proto_stopped(struct wireless_dev * wdev,gfp_t gfp)16833 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16834 {
16835 struct cfg80211_registered_device *rdev;
16836 struct sk_buff *msg;
16837 void *hdr;
16838 u32 nlportid;
16839
16840 rdev = wiphy_to_rdev(wdev->wiphy);
16841 if (!rdev->crit_proto_nlportid)
16842 return;
16843
16844 nlportid = rdev->crit_proto_nlportid;
16845 rdev->crit_proto_nlportid = 0;
16846
16847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16848 if (!msg)
16849 return;
16850
16851 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16852 if (!hdr)
16853 goto nla_put_failure;
16854
16855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16856 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16857 NL80211_ATTR_PAD))
16858 goto nla_put_failure;
16859
16860 genlmsg_end(msg, hdr);
16861
16862 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16863 return;
16864
16865 nla_put_failure:
16866 nlmsg_free(msg);
16867 }
16868 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16869
nl80211_send_ap_stopped(struct wireless_dev * wdev)16870 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16871 {
16872 struct wiphy *wiphy = wdev->wiphy;
16873 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16874 struct sk_buff *msg;
16875 void *hdr;
16876
16877 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16878 if (!msg)
16879 return;
16880
16881 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16882 if (!hdr)
16883 goto out;
16884
16885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16887 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16888 NL80211_ATTR_PAD))
16889 goto out;
16890
16891 genlmsg_end(msg, hdr);
16892
16893 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16894 NL80211_MCGRP_MLME, GFP_KERNEL);
16895 return;
16896 out:
16897 nlmsg_free(msg);
16898 }
16899
cfg80211_external_auth_request(struct net_device * dev,struct cfg80211_external_auth_params * params,gfp_t gfp)16900 int cfg80211_external_auth_request(struct net_device *dev,
16901 struct cfg80211_external_auth_params *params,
16902 gfp_t gfp)
16903 {
16904 struct wireless_dev *wdev = dev->ieee80211_ptr;
16905 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16906 struct sk_buff *msg;
16907 void *hdr;
16908
16909 if (!wdev->conn_owner_nlportid)
16910 return -EINVAL;
16911
16912 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16913 if (!msg)
16914 return -ENOMEM;
16915
16916 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16917 if (!hdr)
16918 goto nla_put_failure;
16919
16920 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16921 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16922 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16923 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16924 params->action) ||
16925 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16926 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16927 params->ssid.ssid))
16928 goto nla_put_failure;
16929
16930 genlmsg_end(msg, hdr);
16931 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16932 wdev->conn_owner_nlportid);
16933 return 0;
16934
16935 nla_put_failure:
16936 nlmsg_free(msg);
16937 return -ENOBUFS;
16938 }
16939 EXPORT_SYMBOL(cfg80211_external_auth_request);
16940
cfg80211_update_owe_info_event(struct net_device * netdev,struct cfg80211_update_owe_info * owe_info,gfp_t gfp)16941 void cfg80211_update_owe_info_event(struct net_device *netdev,
16942 struct cfg80211_update_owe_info *owe_info,
16943 gfp_t gfp)
16944 {
16945 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16946 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16947 struct sk_buff *msg;
16948 void *hdr;
16949
16950 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16951
16952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16953 if (!msg)
16954 return;
16955
16956 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16957 if (!hdr)
16958 goto nla_put_failure;
16959
16960 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16961 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16962 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16963 goto nla_put_failure;
16964
16965 if (!owe_info->ie_len ||
16966 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16967 goto nla_put_failure;
16968
16969 genlmsg_end(msg, hdr);
16970
16971 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16972 NL80211_MCGRP_MLME, gfp);
16973 return;
16974
16975 nla_put_failure:
16976 genlmsg_cancel(msg, hdr);
16977 nlmsg_free(msg);
16978 }
16979 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16980
16981 /* initialisation/exit functions */
16982
nl80211_init(void)16983 int __init nl80211_init(void)
16984 {
16985 int err;
16986
16987 err = genl_register_family(&nl80211_fam);
16988 if (err)
16989 return err;
16990
16991 err = netlink_register_notifier(&nl80211_netlink_notifier);
16992 if (err)
16993 goto err_out;
16994
16995 return 0;
16996 err_out:
16997 genl_unregister_family(&nl80211_fam);
16998 return err;
16999 }
17000
nl80211_exit(void)17001 void nl80211_exit(void)
17002 {
17003 netlink_unregister_notifier(&nl80211_netlink_notifier);
17004 genl_unregister_family(&nl80211_fam);
17005 }
17006
