1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
4 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
5 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
6 * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
7 * Copyright (C) 2018 Intel Corporation
8 */
9
10 /*
11 * TODO:
12 * - Add TSF sync and fix IBSS beacon transmission by adding
13 * competition for "air time" at TBTT
14 * - RX filtering based on filter configuration (data->rx_filter)
15 */
16
17 #include <linux/list.h>
18 #include <linux/slab.h>
19 #include <linux/spinlock.h>
20 #include <net/dst.h>
21 #include <net/xfrm.h>
22 #include <net/mac80211.h>
23 #include <net/ieee80211_radiotap.h>
24 #include <linux/if_arp.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/etherdevice.h>
27 #include <linux/platform_device.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include <net/net_namespace.h>
33 #include <net/netns/generic.h>
34 #include <linux/rhashtable.h>
35 #include <linux/nospec.h>
36 #include "mac80211_hwsim.h"
37
38 #define WARN_QUEUE 100
39 #define MAX_QUEUE 200
40
41 MODULE_AUTHOR("Jouni Malinen");
42 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
43 MODULE_LICENSE("GPL");
44
45 static int radios = 2;
46 module_param(radios, int, 0444);
47 MODULE_PARM_DESC(radios, "Number of simulated radios");
48
49 static int channels = 1;
50 module_param(channels, int, 0444);
51 MODULE_PARM_DESC(channels, "Number of concurrent channels");
52
53 static bool paged_rx = false;
54 module_param(paged_rx, bool, 0644);
55 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
56
57 static bool rctbl = false;
58 module_param(rctbl, bool, 0444);
59 MODULE_PARM_DESC(rctbl, "Handle rate control table");
60
61 static bool support_p2p_device = true;
62 module_param(support_p2p_device, bool, 0444);
63 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
64
65 /**
66 * enum hwsim_regtest - the type of regulatory tests we offer
67 *
68 * These are the different values you can use for the regtest
69 * module parameter. This is useful to help test world roaming
70 * and the driver regulatory_hint() call and combinations of these.
71 * If you want to do specific alpha2 regulatory domain tests simply
72 * use the userspace regulatory request as that will be respected as
73 * well without the need of this module parameter. This is designed
74 * only for testing the driver regulatory request, world roaming
75 * and all possible combinations.
76 *
77 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
78 * this is the default value.
79 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
80 * hint, only one driver regulatory hint will be sent as such the
81 * secondary radios are expected to follow.
82 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
83 * request with all radios reporting the same regulatory domain.
84 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
85 * different regulatory domains requests. Expected behaviour is for
86 * an intersection to occur but each device will still use their
87 * respective regulatory requested domains. Subsequent radios will
88 * use the resulting intersection.
89 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
90 * this by using a custom beacon-capable regulatory domain for the first
91 * radio. All other device world roam.
92 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
93 * domain requests. All radios will adhere to this custom world regulatory
94 * domain.
95 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
96 * domain requests. The first radio will adhere to the first custom world
97 * regulatory domain, the second one to the second custom world regulatory
98 * domain. All other devices will world roam.
99 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
100 * settings, only the first radio will send a regulatory domain request
101 * and use strict settings. The rest of the radios are expected to follow.
102 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
103 * settings. All radios will adhere to this.
104 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
105 * domain settings, combined with secondary driver regulatory domain
106 * settings. The first radio will get a strict regulatory domain setting
107 * using the first driver regulatory request and the second radio will use
108 * non-strict settings using the second driver regulatory request. All
109 * other devices should follow the intersection created between the
110 * first two.
111 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
112 * at least 6 radios for a complete test. We will test in this order:
113 * 1 - driver custom world regulatory domain
114 * 2 - second custom world regulatory domain
115 * 3 - first driver regulatory domain request
116 * 4 - second driver regulatory domain request
117 * 5 - strict regulatory domain settings using the third driver regulatory
118 * domain request
119 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
120 * regulatory requests.
121 */
122 enum hwsim_regtest {
123 HWSIM_REGTEST_DISABLED = 0,
124 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
125 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
126 HWSIM_REGTEST_DIFF_COUNTRY = 3,
127 HWSIM_REGTEST_WORLD_ROAM = 4,
128 HWSIM_REGTEST_CUSTOM_WORLD = 5,
129 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
130 HWSIM_REGTEST_STRICT_FOLLOW = 7,
131 HWSIM_REGTEST_STRICT_ALL = 8,
132 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
133 HWSIM_REGTEST_ALL = 10,
134 };
135
136 /* Set to one of the HWSIM_REGTEST_* values above */
137 static int regtest = HWSIM_REGTEST_DISABLED;
138 module_param(regtest, int, 0444);
139 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
140
141 static const char *hwsim_alpha2s[] = {
142 "FI",
143 "AL",
144 "US",
145 "DE",
146 "JP",
147 "AL",
148 };
149
150 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
151 .n_reg_rules = 4,
152 .alpha2 = "99",
153 .reg_rules = {
154 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
155 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
156 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
157 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
158 }
159 };
160
161 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
162 .n_reg_rules = 2,
163 .alpha2 = "99",
164 .reg_rules = {
165 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
166 REG_RULE(5725-10, 5850+10, 40, 0, 30,
167 NL80211_RRF_NO_IR),
168 }
169 };
170
171 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
172 &hwsim_world_regdom_custom_01,
173 &hwsim_world_regdom_custom_02,
174 };
175
176 struct hwsim_vif_priv {
177 u32 magic;
178 u8 bssid[ETH_ALEN];
179 bool assoc;
180 bool bcn_en;
181 u16 aid;
182 };
183
184 #define HWSIM_VIF_MAGIC 0x69537748
185
hwsim_check_magic(struct ieee80211_vif * vif)186 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
187 {
188 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
189 WARN(vp->magic != HWSIM_VIF_MAGIC,
190 "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
191 vif, vp->magic, vif->addr, vif->type, vif->p2p);
192 }
193
hwsim_set_magic(struct ieee80211_vif * vif)194 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
195 {
196 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
197 vp->magic = HWSIM_VIF_MAGIC;
198 }
199
hwsim_clear_magic(struct ieee80211_vif * vif)200 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
201 {
202 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
203 vp->magic = 0;
204 }
205
206 struct hwsim_sta_priv {
207 u32 magic;
208 };
209
210 #define HWSIM_STA_MAGIC 0x6d537749
211
hwsim_check_sta_magic(struct ieee80211_sta * sta)212 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
213 {
214 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
215 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
216 }
217
hwsim_set_sta_magic(struct ieee80211_sta * sta)218 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
219 {
220 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
221 sp->magic = HWSIM_STA_MAGIC;
222 }
223
hwsim_clear_sta_magic(struct ieee80211_sta * sta)224 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
225 {
226 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
227 sp->magic = 0;
228 }
229
230 struct hwsim_chanctx_priv {
231 u32 magic;
232 };
233
234 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
235
hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf * c)236 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
237 {
238 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
239 WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
240 }
241
hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf * c)242 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
243 {
244 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
245 cp->magic = HWSIM_CHANCTX_MAGIC;
246 }
247
hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf * c)248 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
249 {
250 struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
251 cp->magic = 0;
252 }
253
254 static unsigned int hwsim_net_id;
255
256 static DEFINE_IDA(hwsim_netgroup_ida);
257
258 struct hwsim_net {
259 int netgroup;
260 u32 wmediumd;
261 };
262
hwsim_net_get_netgroup(struct net * net)263 static inline int hwsim_net_get_netgroup(struct net *net)
264 {
265 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
266
267 return hwsim_net->netgroup;
268 }
269
hwsim_net_set_netgroup(struct net * net)270 static inline int hwsim_net_set_netgroup(struct net *net)
271 {
272 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
273
274 hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
275 0, 0, GFP_KERNEL);
276 return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
277 }
278
hwsim_net_get_wmediumd(struct net * net)279 static inline u32 hwsim_net_get_wmediumd(struct net *net)
280 {
281 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
282
283 return hwsim_net->wmediumd;
284 }
285
hwsim_net_set_wmediumd(struct net * net,u32 portid)286 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
287 {
288 struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
289
290 hwsim_net->wmediumd = portid;
291 }
292
293 static struct class *hwsim_class;
294
295 static struct net_device *hwsim_mon; /* global monitor netdev */
296
297 #define CHAN2G(_freq) { \
298 .band = NL80211_BAND_2GHZ, \
299 .center_freq = (_freq), \
300 .hw_value = (_freq), \
301 .max_power = 20, \
302 }
303
304 #define CHAN5G(_freq) { \
305 .band = NL80211_BAND_5GHZ, \
306 .center_freq = (_freq), \
307 .hw_value = (_freq), \
308 .max_power = 20, \
309 }
310
311 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
312 CHAN2G(2412), /* Channel 1 */
313 CHAN2G(2417), /* Channel 2 */
314 CHAN2G(2422), /* Channel 3 */
315 CHAN2G(2427), /* Channel 4 */
316 CHAN2G(2432), /* Channel 5 */
317 CHAN2G(2437), /* Channel 6 */
318 CHAN2G(2442), /* Channel 7 */
319 CHAN2G(2447), /* Channel 8 */
320 CHAN2G(2452), /* Channel 9 */
321 CHAN2G(2457), /* Channel 10 */
322 CHAN2G(2462), /* Channel 11 */
323 CHAN2G(2467), /* Channel 12 */
324 CHAN2G(2472), /* Channel 13 */
325 CHAN2G(2484), /* Channel 14 */
326 };
327
328 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
329 CHAN5G(5180), /* Channel 36 */
330 CHAN5G(5200), /* Channel 40 */
331 CHAN5G(5220), /* Channel 44 */
332 CHAN5G(5240), /* Channel 48 */
333
334 CHAN5G(5260), /* Channel 52 */
335 CHAN5G(5280), /* Channel 56 */
336 CHAN5G(5300), /* Channel 60 */
337 CHAN5G(5320), /* Channel 64 */
338
339 CHAN5G(5500), /* Channel 100 */
340 CHAN5G(5520), /* Channel 104 */
341 CHAN5G(5540), /* Channel 108 */
342 CHAN5G(5560), /* Channel 112 */
343 CHAN5G(5580), /* Channel 116 */
344 CHAN5G(5600), /* Channel 120 */
345 CHAN5G(5620), /* Channel 124 */
346 CHAN5G(5640), /* Channel 128 */
347 CHAN5G(5660), /* Channel 132 */
348 CHAN5G(5680), /* Channel 136 */
349 CHAN5G(5700), /* Channel 140 */
350
351 CHAN5G(5745), /* Channel 149 */
352 CHAN5G(5765), /* Channel 153 */
353 CHAN5G(5785), /* Channel 157 */
354 CHAN5G(5805), /* Channel 161 */
355 CHAN5G(5825), /* Channel 165 */
356 CHAN5G(5845), /* Channel 169 */
357 };
358
359 static const struct ieee80211_rate hwsim_rates[] = {
360 { .bitrate = 10 },
361 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
362 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
363 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
364 { .bitrate = 60 },
365 { .bitrate = 90 },
366 { .bitrate = 120 },
367 { .bitrate = 180 },
368 { .bitrate = 240 },
369 { .bitrate = 360 },
370 { .bitrate = 480 },
371 { .bitrate = 540 }
372 };
373
374 static const u32 hwsim_ciphers[] = {
375 WLAN_CIPHER_SUITE_WEP40,
376 WLAN_CIPHER_SUITE_WEP104,
377 WLAN_CIPHER_SUITE_TKIP,
378 WLAN_CIPHER_SUITE_CCMP,
379 WLAN_CIPHER_SUITE_CCMP_256,
380 WLAN_CIPHER_SUITE_GCMP,
381 WLAN_CIPHER_SUITE_GCMP_256,
382 WLAN_CIPHER_SUITE_AES_CMAC,
383 WLAN_CIPHER_SUITE_BIP_CMAC_256,
384 WLAN_CIPHER_SUITE_BIP_GMAC_128,
385 WLAN_CIPHER_SUITE_BIP_GMAC_256,
386 };
387
388 #define OUI_QCA 0x001374
389 #define QCA_NL80211_SUBCMD_TEST 1
390 enum qca_nl80211_vendor_subcmds {
391 QCA_WLAN_VENDOR_ATTR_TEST = 8,
392 QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
393 };
394
395 static const struct nla_policy
396 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
397 [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
398 };
399
mac80211_hwsim_vendor_cmd_test(struct wiphy * wiphy,struct wireless_dev * wdev,const void * data,int data_len)400 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
401 struct wireless_dev *wdev,
402 const void *data, int data_len)
403 {
404 struct sk_buff *skb;
405 struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
406 int err;
407 u32 val;
408
409 err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
410 data_len, hwsim_vendor_test_policy, NULL);
411 if (err)
412 return err;
413 if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
414 return -EINVAL;
415 val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
416 wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
417
418 /* Send a vendor event as a test. Note that this would not normally be
419 * done within a command handler, but rather, based on some other
420 * trigger. For simplicity, this command is used to trigger the event
421 * here.
422 *
423 * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
424 */
425 skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
426 if (skb) {
427 /* skb_put() or nla_put() will fill up data within
428 * NL80211_ATTR_VENDOR_DATA.
429 */
430
431 /* Add vendor data */
432 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
433
434 /* Send the event - this will call nla_nest_end() */
435 cfg80211_vendor_event(skb, GFP_KERNEL);
436 }
437
438 /* Send a response to the command */
439 skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
440 if (!skb)
441 return -ENOMEM;
442
443 /* skb_put() or nla_put() will fill up data within
444 * NL80211_ATTR_VENDOR_DATA
445 */
446 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
447
448 return cfg80211_vendor_cmd_reply(skb);
449 }
450
451 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
452 {
453 .info = { .vendor_id = OUI_QCA,
454 .subcmd = QCA_NL80211_SUBCMD_TEST },
455 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
456 .doit = mac80211_hwsim_vendor_cmd_test,
457 .policy = hwsim_vendor_test_policy,
458 .maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
459 }
460 };
461
462 /* Advertise support vendor specific events */
463 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
464 { .vendor_id = OUI_QCA, .subcmd = 1 },
465 };
466
467 static spinlock_t hwsim_radio_lock;
468 static LIST_HEAD(hwsim_radios);
469 static struct rhashtable hwsim_radios_rht;
470 static int hwsim_radio_idx;
471 static int hwsim_radios_generation = 1;
472
473 static struct platform_driver mac80211_hwsim_driver = {
474 .driver = {
475 .name = "mac80211_hwsim",
476 },
477 };
478
479 struct mac80211_hwsim_data {
480 struct list_head list;
481 struct rhash_head rht;
482 struct ieee80211_hw *hw;
483 struct device *dev;
484 struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
485 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
486 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
487 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
488 struct ieee80211_iface_combination if_combination;
489 struct ieee80211_iface_limit if_limits[3];
490 int n_if_limits;
491
492 u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
493
494 struct mac_address addresses[2];
495 int channels, idx;
496 bool use_chanctx;
497 bool destroy_on_close;
498 u32 portid;
499 char alpha2[2];
500 const struct ieee80211_regdomain *regd;
501
502 struct ieee80211_channel *tmp_chan;
503 struct ieee80211_channel *roc_chan;
504 u32 roc_duration;
505 struct delayed_work roc_start;
506 struct delayed_work roc_done;
507 struct delayed_work hw_scan;
508 struct cfg80211_scan_request *hw_scan_request;
509 struct ieee80211_vif *hw_scan_vif;
510 int scan_chan_idx;
511 u8 scan_addr[ETH_ALEN];
512 struct {
513 struct ieee80211_channel *channel;
514 unsigned long next_start, start, end;
515 } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
516 ARRAY_SIZE(hwsim_channels_5ghz)];
517
518 struct ieee80211_channel *channel;
519 u64 beacon_int /* beacon interval in us */;
520 unsigned int rx_filter;
521 bool started, idle, scanning;
522 struct mutex mutex;
523 struct hrtimer beacon_timer;
524 enum ps_mode {
525 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
526 } ps;
527 bool ps_poll_pending;
528 struct dentry *debugfs;
529
530 uintptr_t pending_cookie;
531 struct sk_buff_head pending; /* packets pending */
532 /*
533 * Only radios in the same group can communicate together (the
534 * channel has to match too). Each bit represents a group. A
535 * radio can be in more than one group.
536 */
537 u64 group;
538
539 /* group shared by radios created in the same netns */
540 int netgroup;
541 /* wmediumd portid responsible for netgroup of this radio */
542 u32 wmediumd;
543
544 /* difference between this hw's clock and the real clock, in usecs */
545 s64 tsf_offset;
546 s64 bcn_delta;
547 /* absolute beacon transmission time. Used to cover up "tx" delay. */
548 u64 abs_bcn_ts;
549
550 /* Stats */
551 u64 tx_pkts;
552 u64 rx_pkts;
553 u64 tx_bytes;
554 u64 rx_bytes;
555 u64 tx_dropped;
556 u64 tx_failed;
557 };
558
559 static const struct rhashtable_params hwsim_rht_params = {
560 .nelem_hint = 2,
561 .automatic_shrinking = true,
562 .key_len = ETH_ALEN,
563 .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
564 .head_offset = offsetof(struct mac80211_hwsim_data, rht),
565 };
566
567 struct hwsim_radiotap_hdr {
568 struct ieee80211_radiotap_header hdr;
569 __le64 rt_tsft;
570 u8 rt_flags;
571 u8 rt_rate;
572 __le16 rt_channel;
573 __le16 rt_chbitmask;
574 } __packed;
575
576 struct hwsim_radiotap_ack_hdr {
577 struct ieee80211_radiotap_header hdr;
578 u8 rt_flags;
579 u8 pad;
580 __le16 rt_channel;
581 __le16 rt_chbitmask;
582 } __packed;
583
584 /* MAC80211_HWSIM netlink family */
585 static struct genl_family hwsim_genl_family;
586
587 enum hwsim_multicast_groups {
588 HWSIM_MCGRP_CONFIG,
589 };
590
591 static const struct genl_multicast_group hwsim_mcgrps[] = {
592 [HWSIM_MCGRP_CONFIG] = { .name = "config", },
593 };
594
595 /* MAC80211_HWSIM netlink policy */
596
597 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
598 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
599 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
600 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
601 .len = IEEE80211_MAX_DATA_LEN },
602 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
603 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
604 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
605 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
606 .len = IEEE80211_TX_MAX_RATES *
607 sizeof(struct hwsim_tx_rate)},
608 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
609 [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
610 [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
611 [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
612 [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
613 [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
614 [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
615 [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
616 [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
617 [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
618 [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
619 [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
620 [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
621 [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
622 };
623
624 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
625 struct sk_buff *skb,
626 struct ieee80211_channel *chan);
627
628 /* sysfs attributes */
hwsim_send_ps_poll(void * dat,u8 * mac,struct ieee80211_vif * vif)629 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
630 {
631 struct mac80211_hwsim_data *data = dat;
632 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
633 struct sk_buff *skb;
634 struct ieee80211_pspoll *pspoll;
635
636 if (!vp->assoc)
637 return;
638
639 wiphy_dbg(data->hw->wiphy,
640 "%s: send PS-Poll to %pM for aid %d\n",
641 __func__, vp->bssid, vp->aid);
642
643 skb = dev_alloc_skb(sizeof(*pspoll));
644 if (!skb)
645 return;
646 pspoll = skb_put(skb, sizeof(*pspoll));
647 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
648 IEEE80211_STYPE_PSPOLL |
649 IEEE80211_FCTL_PM);
650 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
651 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
652 memcpy(pspoll->ta, mac, ETH_ALEN);
653
654 rcu_read_lock();
655 mac80211_hwsim_tx_frame(data->hw, skb,
656 rcu_dereference(vif->chanctx_conf)->def.chan);
657 rcu_read_unlock();
658 }
659
hwsim_send_nullfunc(struct mac80211_hwsim_data * data,u8 * mac,struct ieee80211_vif * vif,int ps)660 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
661 struct ieee80211_vif *vif, int ps)
662 {
663 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
664 struct sk_buff *skb;
665 struct ieee80211_hdr *hdr;
666
667 if (!vp->assoc)
668 return;
669
670 wiphy_dbg(data->hw->wiphy,
671 "%s: send data::nullfunc to %pM ps=%d\n",
672 __func__, vp->bssid, ps);
673
674 skb = dev_alloc_skb(sizeof(*hdr));
675 if (!skb)
676 return;
677 hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
678 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
679 IEEE80211_STYPE_NULLFUNC |
680 IEEE80211_FCTL_TODS |
681 (ps ? IEEE80211_FCTL_PM : 0));
682 hdr->duration_id = cpu_to_le16(0);
683 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
684 memcpy(hdr->addr2, mac, ETH_ALEN);
685 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
686
687 rcu_read_lock();
688 mac80211_hwsim_tx_frame(data->hw, skb,
689 rcu_dereference(vif->chanctx_conf)->def.chan);
690 rcu_read_unlock();
691 }
692
693
hwsim_send_nullfunc_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)694 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
695 struct ieee80211_vif *vif)
696 {
697 struct mac80211_hwsim_data *data = dat;
698 hwsim_send_nullfunc(data, mac, vif, 1);
699 }
700
hwsim_send_nullfunc_no_ps(void * dat,u8 * mac,struct ieee80211_vif * vif)701 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
702 struct ieee80211_vif *vif)
703 {
704 struct mac80211_hwsim_data *data = dat;
705 hwsim_send_nullfunc(data, mac, vif, 0);
706 }
707
hwsim_fops_ps_read(void * dat,u64 * val)708 static int hwsim_fops_ps_read(void *dat, u64 *val)
709 {
710 struct mac80211_hwsim_data *data = dat;
711 *val = data->ps;
712 return 0;
713 }
714
hwsim_fops_ps_write(void * dat,u64 val)715 static int hwsim_fops_ps_write(void *dat, u64 val)
716 {
717 struct mac80211_hwsim_data *data = dat;
718 enum ps_mode old_ps;
719
720 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
721 val != PS_MANUAL_POLL)
722 return -EINVAL;
723
724 if (val == PS_MANUAL_POLL) {
725 if (data->ps != PS_ENABLED)
726 return -EINVAL;
727 local_bh_disable();
728 ieee80211_iterate_active_interfaces_atomic(
729 data->hw, IEEE80211_IFACE_ITER_NORMAL,
730 hwsim_send_ps_poll, data);
731 local_bh_enable();
732 return 0;
733 }
734 old_ps = data->ps;
735 data->ps = val;
736
737 local_bh_disable();
738 if (old_ps == PS_DISABLED && val != PS_DISABLED) {
739 ieee80211_iterate_active_interfaces_atomic(
740 data->hw, IEEE80211_IFACE_ITER_NORMAL,
741 hwsim_send_nullfunc_ps, data);
742 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
743 ieee80211_iterate_active_interfaces_atomic(
744 data->hw, IEEE80211_IFACE_ITER_NORMAL,
745 hwsim_send_nullfunc_no_ps, data);
746 }
747 local_bh_enable();
748
749 return 0;
750 }
751
752 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
753 "%llu\n");
754
hwsim_write_simulate_radar(void * dat,u64 val)755 static int hwsim_write_simulate_radar(void *dat, u64 val)
756 {
757 struct mac80211_hwsim_data *data = dat;
758
759 ieee80211_radar_detected(data->hw);
760
761 return 0;
762 }
763
764 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
765 hwsim_write_simulate_radar, "%llu\n");
766
hwsim_fops_group_read(void * dat,u64 * val)767 static int hwsim_fops_group_read(void *dat, u64 *val)
768 {
769 struct mac80211_hwsim_data *data = dat;
770 *val = data->group;
771 return 0;
772 }
773
hwsim_fops_group_write(void * dat,u64 val)774 static int hwsim_fops_group_write(void *dat, u64 val)
775 {
776 struct mac80211_hwsim_data *data = dat;
777 data->group = val;
778 return 0;
779 }
780
781 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
782 hwsim_fops_group_read, hwsim_fops_group_write,
783 "%llx\n");
784
hwsim_mon_xmit(struct sk_buff * skb,struct net_device * dev)785 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
786 struct net_device *dev)
787 {
788 /* TODO: allow packet injection */
789 dev_kfree_skb(skb);
790 return NETDEV_TX_OK;
791 }
792
mac80211_hwsim_get_tsf_raw(void)793 static inline u64 mac80211_hwsim_get_tsf_raw(void)
794 {
795 return ktime_to_us(ktime_get_real());
796 }
797
__mac80211_hwsim_get_tsf(struct mac80211_hwsim_data * data)798 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
799 {
800 u64 now = mac80211_hwsim_get_tsf_raw();
801 return cpu_to_le64(now + data->tsf_offset);
802 }
803
mac80211_hwsim_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)804 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
805 struct ieee80211_vif *vif)
806 {
807 struct mac80211_hwsim_data *data = hw->priv;
808 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
809 }
810
mac80211_hwsim_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)811 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
812 struct ieee80211_vif *vif, u64 tsf)
813 {
814 struct mac80211_hwsim_data *data = hw->priv;
815 u64 now = mac80211_hwsim_get_tsf(hw, vif);
816 u32 bcn_int = data->beacon_int;
817 u64 delta = abs(tsf - now);
818
819 /* adjust after beaconing with new timestamp at old TBTT */
820 if (tsf > now) {
821 data->tsf_offset += delta;
822 data->bcn_delta = do_div(delta, bcn_int);
823 } else {
824 data->tsf_offset -= delta;
825 data->bcn_delta = -(s64)do_div(delta, bcn_int);
826 }
827 }
828
mac80211_hwsim_monitor_rx(struct ieee80211_hw * hw,struct sk_buff * tx_skb,struct ieee80211_channel * chan)829 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
830 struct sk_buff *tx_skb,
831 struct ieee80211_channel *chan)
832 {
833 struct mac80211_hwsim_data *data = hw->priv;
834 struct sk_buff *skb;
835 struct hwsim_radiotap_hdr *hdr;
836 u16 flags;
837 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
838 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
839
840 if (WARN_ON(!txrate))
841 return;
842
843 if (!netif_running(hwsim_mon))
844 return;
845
846 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
847 if (skb == NULL)
848 return;
849
850 hdr = skb_push(skb, sizeof(*hdr));
851 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
852 hdr->hdr.it_pad = 0;
853 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
854 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
855 (1 << IEEE80211_RADIOTAP_RATE) |
856 (1 << IEEE80211_RADIOTAP_TSFT) |
857 (1 << IEEE80211_RADIOTAP_CHANNEL));
858 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
859 hdr->rt_flags = 0;
860 hdr->rt_rate = txrate->bitrate / 5;
861 hdr->rt_channel = cpu_to_le16(chan->center_freq);
862 flags = IEEE80211_CHAN_2GHZ;
863 if (txrate->flags & IEEE80211_RATE_ERP_G)
864 flags |= IEEE80211_CHAN_OFDM;
865 else
866 flags |= IEEE80211_CHAN_CCK;
867 hdr->rt_chbitmask = cpu_to_le16(flags);
868
869 skb->dev = hwsim_mon;
870 skb_reset_mac_header(skb);
871 skb->ip_summed = CHECKSUM_UNNECESSARY;
872 skb->pkt_type = PACKET_OTHERHOST;
873 skb->protocol = htons(ETH_P_802_2);
874 memset(skb->cb, 0, sizeof(skb->cb));
875 netif_rx(skb);
876 }
877
878
mac80211_hwsim_monitor_ack(struct ieee80211_channel * chan,const u8 * addr)879 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
880 const u8 *addr)
881 {
882 struct sk_buff *skb;
883 struct hwsim_radiotap_ack_hdr *hdr;
884 u16 flags;
885 struct ieee80211_hdr *hdr11;
886
887 if (!netif_running(hwsim_mon))
888 return;
889
890 skb = dev_alloc_skb(100);
891 if (skb == NULL)
892 return;
893
894 hdr = skb_put(skb, sizeof(*hdr));
895 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
896 hdr->hdr.it_pad = 0;
897 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
898 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
899 (1 << IEEE80211_RADIOTAP_CHANNEL));
900 hdr->rt_flags = 0;
901 hdr->pad = 0;
902 hdr->rt_channel = cpu_to_le16(chan->center_freq);
903 flags = IEEE80211_CHAN_2GHZ;
904 hdr->rt_chbitmask = cpu_to_le16(flags);
905
906 hdr11 = skb_put(skb, 10);
907 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
908 IEEE80211_STYPE_ACK);
909 hdr11->duration_id = cpu_to_le16(0);
910 memcpy(hdr11->addr1, addr, ETH_ALEN);
911
912 skb->dev = hwsim_mon;
913 skb_reset_mac_header(skb);
914 skb->ip_summed = CHECKSUM_UNNECESSARY;
915 skb->pkt_type = PACKET_OTHERHOST;
916 skb->protocol = htons(ETH_P_802_2);
917 memset(skb->cb, 0, sizeof(skb->cb));
918 netif_rx(skb);
919 }
920
921 struct mac80211_hwsim_addr_match_data {
922 u8 addr[ETH_ALEN];
923 bool ret;
924 };
925
mac80211_hwsim_addr_iter(void * data,u8 * mac,struct ieee80211_vif * vif)926 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
927 struct ieee80211_vif *vif)
928 {
929 struct mac80211_hwsim_addr_match_data *md = data;
930
931 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
932 md->ret = true;
933 }
934
mac80211_hwsim_addr_match(struct mac80211_hwsim_data * data,const u8 * addr)935 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
936 const u8 *addr)
937 {
938 struct mac80211_hwsim_addr_match_data md = {
939 .ret = false,
940 };
941
942 if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
943 return true;
944
945 memcpy(md.addr, addr, ETH_ALEN);
946
947 ieee80211_iterate_active_interfaces_atomic(data->hw,
948 IEEE80211_IFACE_ITER_NORMAL,
949 mac80211_hwsim_addr_iter,
950 &md);
951
952 return md.ret;
953 }
954
hwsim_ps_rx_ok(struct mac80211_hwsim_data * data,struct sk_buff * skb)955 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
956 struct sk_buff *skb)
957 {
958 switch (data->ps) {
959 case PS_DISABLED:
960 return true;
961 case PS_ENABLED:
962 return false;
963 case PS_AUTO_POLL:
964 /* TODO: accept (some) Beacons by default and other frames only
965 * if pending PS-Poll has been sent */
966 return true;
967 case PS_MANUAL_POLL:
968 /* Allow unicast frames to own address if there is a pending
969 * PS-Poll */
970 if (data->ps_poll_pending &&
971 mac80211_hwsim_addr_match(data, skb->data + 4)) {
972 data->ps_poll_pending = false;
973 return true;
974 }
975 return false;
976 }
977
978 return true;
979 }
980
hwsim_unicast_netgroup(struct mac80211_hwsim_data * data,struct sk_buff * skb,int portid)981 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
982 struct sk_buff *skb, int portid)
983 {
984 struct net *net;
985 bool found = false;
986 int res = -ENOENT;
987
988 rcu_read_lock();
989 for_each_net_rcu(net) {
990 if (data->netgroup == hwsim_net_get_netgroup(net)) {
991 res = genlmsg_unicast(net, skb, portid);
992 found = true;
993 break;
994 }
995 }
996 rcu_read_unlock();
997
998 if (!found)
999 nlmsg_free(skb);
1000
1001 return res;
1002 }
1003
trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate * rate)1004 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1005 {
1006 u16 result = 0;
1007
1008 if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1009 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1010 if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1011 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1012 if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1013 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1014 if (rate->flags & IEEE80211_TX_RC_MCS)
1015 result |= MAC80211_HWSIM_TX_RC_MCS;
1016 if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1017 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1018 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1019 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1020 if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1021 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1022 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1023 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1024 if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1025 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1026 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1027 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1028 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1029 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1030
1031 return result;
1032 }
1033
mac80211_hwsim_tx_frame_nl(struct ieee80211_hw * hw,struct sk_buff * my_skb,int dst_portid)1034 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1035 struct sk_buff *my_skb,
1036 int dst_portid)
1037 {
1038 struct sk_buff *skb;
1039 struct mac80211_hwsim_data *data = hw->priv;
1040 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1041 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1042 void *msg_head;
1043 unsigned int hwsim_flags = 0;
1044 int i;
1045 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1046 struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1047 uintptr_t cookie;
1048
1049 if (data->ps != PS_DISABLED)
1050 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1051 /* If the queue contains MAX_QUEUE skb's drop some */
1052 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1053 /* Droping until WARN_QUEUE level */
1054 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1055 ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1056 data->tx_dropped++;
1057 }
1058 }
1059
1060 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1061 if (skb == NULL)
1062 goto nla_put_failure;
1063
1064 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1065 HWSIM_CMD_FRAME);
1066 if (msg_head == NULL) {
1067 pr_debug("mac80211_hwsim: problem with msg_head\n");
1068 goto nla_put_failure;
1069 }
1070
1071 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1072 ETH_ALEN, data->addresses[1].addr))
1073 goto nla_put_failure;
1074
1075 /* We get the skb->data */
1076 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1077 goto nla_put_failure;
1078
1079 /* We get the flags for this transmission, and we translate them to
1080 wmediumd flags */
1081
1082 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1083 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1084
1085 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1086 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1087
1088 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1089 goto nla_put_failure;
1090
1091 if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1092 goto nla_put_failure;
1093
1094 /* We get the tx control (rate and retries) info*/
1095
1096 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1097 tx_attempts[i].idx = info->status.rates[i].idx;
1098 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1099 tx_attempts[i].count = info->status.rates[i].count;
1100 tx_attempts_flags[i].flags =
1101 trans_tx_rate_flags_ieee2hwsim(
1102 &info->status.rates[i]);
1103 }
1104
1105 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1106 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1107 tx_attempts))
1108 goto nla_put_failure;
1109
1110 if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1111 sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1112 tx_attempts_flags))
1113 goto nla_put_failure;
1114
1115 /* We create a cookie to identify this skb */
1116 data->pending_cookie++;
1117 cookie = data->pending_cookie;
1118 info->rate_driver_data[0] = (void *)cookie;
1119 if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1120 goto nla_put_failure;
1121
1122 genlmsg_end(skb, msg_head);
1123 if (hwsim_unicast_netgroup(data, skb, dst_portid))
1124 goto err_free_txskb;
1125
1126 /* Enqueue the packet */
1127 skb_queue_tail(&data->pending, my_skb);
1128 data->tx_pkts++;
1129 data->tx_bytes += my_skb->len;
1130 return;
1131
1132 nla_put_failure:
1133 nlmsg_free(skb);
1134 err_free_txskb:
1135 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1136 ieee80211_free_txskb(hw, my_skb);
1137 data->tx_failed++;
1138 }
1139
hwsim_chans_compat(struct ieee80211_channel * c1,struct ieee80211_channel * c2)1140 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1141 struct ieee80211_channel *c2)
1142 {
1143 if (!c1 || !c2)
1144 return false;
1145
1146 return c1->center_freq == c2->center_freq;
1147 }
1148
1149 struct tx_iter_data {
1150 struct ieee80211_channel *channel;
1151 bool receive;
1152 };
1153
mac80211_hwsim_tx_iter(void * _data,u8 * addr,struct ieee80211_vif * vif)1154 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1155 struct ieee80211_vif *vif)
1156 {
1157 struct tx_iter_data *data = _data;
1158
1159 if (!vif->chanctx_conf)
1160 return;
1161
1162 if (!hwsim_chans_compat(data->channel,
1163 rcu_dereference(vif->chanctx_conf)->def.chan))
1164 return;
1165
1166 data->receive = true;
1167 }
1168
mac80211_hwsim_add_vendor_rtap(struct sk_buff * skb)1169 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1170 {
1171 /*
1172 * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1173 * e.g. like this:
1174 * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1175 * (but you should use a valid OUI, not that)
1176 *
1177 * If anyone wants to 'donate' a radiotap OUI/subns code
1178 * please send a patch removing this #ifdef and changing
1179 * the values accordingly.
1180 */
1181 #ifdef HWSIM_RADIOTAP_OUI
1182 struct ieee80211_vendor_radiotap *rtap;
1183
1184 /*
1185 * Note that this code requires the headroom in the SKB
1186 * that was allocated earlier.
1187 */
1188 rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1189 rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1190 rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1191 rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1192 rtap->subns = 127;
1193
1194 /*
1195 * Radiotap vendor namespaces can (and should) also be
1196 * split into fields by using the standard radiotap
1197 * presence bitmap mechanism. Use just BIT(0) here for
1198 * the presence bitmap.
1199 */
1200 rtap->present = BIT(0);
1201 /* We have 8 bytes of (dummy) data */
1202 rtap->len = 8;
1203 /* For testing, also require it to be aligned */
1204 rtap->align = 8;
1205 /* And also test that padding works, 4 bytes */
1206 rtap->pad = 4;
1207 /* push the data */
1208 memcpy(rtap->data, "ABCDEFGH", 8);
1209 /* make sure to clear padding, mac80211 doesn't */
1210 memset(rtap->data + 8, 0, 4);
1211
1212 IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1213 #endif
1214 }
1215
mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1216 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1217 struct sk_buff *skb,
1218 struct ieee80211_channel *chan)
1219 {
1220 struct mac80211_hwsim_data *data = hw->priv, *data2;
1221 bool ack = false;
1222 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1223 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1224 struct ieee80211_rx_status rx_status;
1225 u64 now;
1226
1227 memset(&rx_status, 0, sizeof(rx_status));
1228 rx_status.flag |= RX_FLAG_MACTIME_START;
1229 rx_status.freq = chan->center_freq;
1230 rx_status.band = chan->band;
1231 if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1232 rx_status.rate_idx =
1233 ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1234 rx_status.nss =
1235 ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1236 rx_status.encoding = RX_ENC_VHT;
1237 } else {
1238 rx_status.rate_idx = info->control.rates[0].idx;
1239 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1240 rx_status.encoding = RX_ENC_HT;
1241 }
1242 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1243 rx_status.bw = RATE_INFO_BW_40;
1244 else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1245 rx_status.bw = RATE_INFO_BW_80;
1246 else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1247 rx_status.bw = RATE_INFO_BW_160;
1248 else
1249 rx_status.bw = RATE_INFO_BW_20;
1250 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1251 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1252 /* TODO: simulate real signal strength (and optional packet loss) */
1253 rx_status.signal = -50;
1254 if (info->control.vif)
1255 rx_status.signal += info->control.vif->bss_conf.txpower;
1256
1257 if (data->ps != PS_DISABLED)
1258 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1259
1260 /* release the skb's source info */
1261 skb_orphan(skb);
1262 skb_dst_drop(skb);
1263 skb->mark = 0;
1264 skb_ext_reset(skb);
1265 nf_reset_ct(skb);
1266
1267 /*
1268 * Get absolute mactime here so all HWs RX at the "same time", and
1269 * absolute TX time for beacon mactime so the timestamp matches.
1270 * Giving beacons a different mactime than non-beacons looks messy, but
1271 * it helps the Toffset be exact and a ~10us mactime discrepancy
1272 * probably doesn't really matter.
1273 */
1274 if (ieee80211_is_beacon(hdr->frame_control) ||
1275 ieee80211_is_probe_resp(hdr->frame_control)) {
1276 rx_status.boottime_ns = ktime_get_boottime_ns();
1277 now = data->abs_bcn_ts;
1278 } else {
1279 now = mac80211_hwsim_get_tsf_raw();
1280 }
1281
1282 /* Copy skb to all enabled radios that are on the current frequency */
1283 spin_lock(&hwsim_radio_lock);
1284 list_for_each_entry(data2, &hwsim_radios, list) {
1285 struct sk_buff *nskb;
1286 struct tx_iter_data tx_iter_data = {
1287 .receive = false,
1288 .channel = chan,
1289 };
1290
1291 if (data == data2)
1292 continue;
1293
1294 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1295 !hwsim_ps_rx_ok(data2, skb))
1296 continue;
1297
1298 if (!(data->group & data2->group))
1299 continue;
1300
1301 if (data->netgroup != data2->netgroup)
1302 continue;
1303
1304 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1305 !hwsim_chans_compat(chan, data2->channel)) {
1306 ieee80211_iterate_active_interfaces_atomic(
1307 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1308 mac80211_hwsim_tx_iter, &tx_iter_data);
1309 if (!tx_iter_data.receive)
1310 continue;
1311 }
1312
1313 /*
1314 * reserve some space for our vendor and the normal
1315 * radiotap header, since we're copying anyway
1316 */
1317 if (skb->len < PAGE_SIZE && paged_rx) {
1318 struct page *page = alloc_page(GFP_ATOMIC);
1319
1320 if (!page)
1321 continue;
1322
1323 nskb = dev_alloc_skb(128);
1324 if (!nskb) {
1325 __free_page(page);
1326 continue;
1327 }
1328
1329 memcpy(page_address(page), skb->data, skb->len);
1330 skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1331 } else {
1332 nskb = skb_copy(skb, GFP_ATOMIC);
1333 if (!nskb)
1334 continue;
1335 }
1336
1337 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1338 ack = true;
1339
1340 rx_status.mactime = now + data2->tsf_offset;
1341
1342 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1343
1344 mac80211_hwsim_add_vendor_rtap(nskb);
1345
1346 data2->rx_pkts++;
1347 data2->rx_bytes += nskb->len;
1348 ieee80211_rx_irqsafe(data2->hw, nskb);
1349 }
1350 spin_unlock(&hwsim_radio_lock);
1351
1352 return ack;
1353 }
1354
mac80211_hwsim_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)1355 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1356 struct ieee80211_tx_control *control,
1357 struct sk_buff *skb)
1358 {
1359 struct mac80211_hwsim_data *data = hw->priv;
1360 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1361 struct ieee80211_hdr *hdr = (void *)skb->data;
1362 struct ieee80211_chanctx_conf *chanctx_conf;
1363 struct ieee80211_channel *channel;
1364 bool ack;
1365 u32 _portid;
1366
1367 if (WARN_ON(skb->len < 10)) {
1368 /* Should not happen; just a sanity check for addr1 use */
1369 ieee80211_free_txskb(hw, skb);
1370 return;
1371 }
1372
1373 if (!data->use_chanctx) {
1374 channel = data->channel;
1375 } else if (txi->hw_queue == 4) {
1376 channel = data->tmp_chan;
1377 } else {
1378 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1379 if (chanctx_conf)
1380 channel = chanctx_conf->def.chan;
1381 else
1382 channel = NULL;
1383 }
1384
1385 if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1386 ieee80211_free_txskb(hw, skb);
1387 return;
1388 }
1389
1390 if (data->idle && !data->tmp_chan) {
1391 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1392 ieee80211_free_txskb(hw, skb);
1393 return;
1394 }
1395
1396 if (txi->control.vif)
1397 hwsim_check_magic(txi->control.vif);
1398 if (control->sta)
1399 hwsim_check_sta_magic(control->sta);
1400
1401 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1402 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1403 txi->control.rates,
1404 ARRAY_SIZE(txi->control.rates));
1405
1406 if (skb->len >= 24 + 8 &&
1407 ieee80211_is_probe_resp(hdr->frame_control)) {
1408 /* fake header transmission time */
1409 struct ieee80211_mgmt *mgmt;
1410 struct ieee80211_rate *txrate;
1411 u64 ts;
1412
1413 mgmt = (struct ieee80211_mgmt *)skb->data;
1414 txrate = ieee80211_get_tx_rate(hw, txi);
1415 ts = mac80211_hwsim_get_tsf_raw();
1416 mgmt->u.probe_resp.timestamp =
1417 cpu_to_le64(ts + data->tsf_offset +
1418 24 * 8 * 10 / txrate->bitrate);
1419 }
1420
1421 mac80211_hwsim_monitor_rx(hw, skb, channel);
1422
1423 /* wmediumd mode check */
1424 _portid = READ_ONCE(data->wmediumd);
1425
1426 if (_portid)
1427 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1428
1429 /* NO wmediumd detected, perfect medium simulation */
1430 data->tx_pkts++;
1431 data->tx_bytes += skb->len;
1432 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1433
1434 if (ack && skb->len >= 16)
1435 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1436
1437 ieee80211_tx_info_clear_status(txi);
1438
1439 /* frame was transmitted at most favorable rate at first attempt */
1440 txi->control.rates[0].count = 1;
1441 txi->control.rates[1].idx = -1;
1442
1443 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1444 txi->flags |= IEEE80211_TX_STAT_ACK;
1445 ieee80211_tx_status_irqsafe(hw, skb);
1446 }
1447
1448
mac80211_hwsim_start(struct ieee80211_hw * hw)1449 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1450 {
1451 struct mac80211_hwsim_data *data = hw->priv;
1452 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1453 data->started = true;
1454 return 0;
1455 }
1456
1457
mac80211_hwsim_stop(struct ieee80211_hw * hw)1458 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1459 {
1460 struct mac80211_hwsim_data *data = hw->priv;
1461 data->started = false;
1462 hrtimer_cancel(&data->beacon_timer);
1463 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1464 }
1465
1466
mac80211_hwsim_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1467 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1468 struct ieee80211_vif *vif)
1469 {
1470 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1471 __func__, ieee80211_vif_type_p2p(vif),
1472 vif->addr);
1473 hwsim_set_magic(vif);
1474
1475 vif->cab_queue = 0;
1476 vif->hw_queue[IEEE80211_AC_VO] = 0;
1477 vif->hw_queue[IEEE80211_AC_VI] = 1;
1478 vif->hw_queue[IEEE80211_AC_BE] = 2;
1479 vif->hw_queue[IEEE80211_AC_BK] = 3;
1480
1481 return 0;
1482 }
1483
1484
mac80211_hwsim_change_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum nl80211_iftype newtype,bool newp2p)1485 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1486 struct ieee80211_vif *vif,
1487 enum nl80211_iftype newtype,
1488 bool newp2p)
1489 {
1490 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1491 wiphy_dbg(hw->wiphy,
1492 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1493 __func__, ieee80211_vif_type_p2p(vif),
1494 newtype, vif->addr);
1495 hwsim_check_magic(vif);
1496
1497 /*
1498 * interface may change from non-AP to AP in
1499 * which case this needs to be set up again
1500 */
1501 vif->cab_queue = 0;
1502
1503 return 0;
1504 }
1505
mac80211_hwsim_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1506 static void mac80211_hwsim_remove_interface(
1507 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1508 {
1509 wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1510 __func__, ieee80211_vif_type_p2p(vif),
1511 vif->addr);
1512 hwsim_check_magic(vif);
1513 hwsim_clear_magic(vif);
1514 }
1515
mac80211_hwsim_tx_frame(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_channel * chan)1516 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1517 struct sk_buff *skb,
1518 struct ieee80211_channel *chan)
1519 {
1520 struct mac80211_hwsim_data *data = hw->priv;
1521 u32 _pid = READ_ONCE(data->wmediumd);
1522
1523 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1524 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1525 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1526 txi->control.rates,
1527 ARRAY_SIZE(txi->control.rates));
1528 }
1529
1530 mac80211_hwsim_monitor_rx(hw, skb, chan);
1531
1532 if (_pid)
1533 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1534
1535 mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1536 dev_kfree_skb(skb);
1537 }
1538
mac80211_hwsim_beacon_tx(void * arg,u8 * mac,struct ieee80211_vif * vif)1539 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1540 struct ieee80211_vif *vif)
1541 {
1542 struct mac80211_hwsim_data *data = arg;
1543 struct ieee80211_hw *hw = data->hw;
1544 struct ieee80211_tx_info *info;
1545 struct ieee80211_rate *txrate;
1546 struct ieee80211_mgmt *mgmt;
1547 struct sk_buff *skb;
1548
1549 hwsim_check_magic(vif);
1550
1551 if (vif->type != NL80211_IFTYPE_AP &&
1552 vif->type != NL80211_IFTYPE_MESH_POINT &&
1553 vif->type != NL80211_IFTYPE_ADHOC)
1554 return;
1555
1556 skb = ieee80211_beacon_get(hw, vif);
1557 if (skb == NULL)
1558 return;
1559 info = IEEE80211_SKB_CB(skb);
1560 if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1561 ieee80211_get_tx_rates(vif, NULL, skb,
1562 info->control.rates,
1563 ARRAY_SIZE(info->control.rates));
1564
1565 txrate = ieee80211_get_tx_rate(hw, info);
1566
1567 mgmt = (struct ieee80211_mgmt *) skb->data;
1568 /* fake header transmission time */
1569 data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1570 mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1571 data->tsf_offset +
1572 24 * 8 * 10 / txrate->bitrate);
1573
1574 mac80211_hwsim_tx_frame(hw, skb,
1575 rcu_dereference(vif->chanctx_conf)->def.chan);
1576
1577 if (vif->csa_active && ieee80211_csa_is_complete(vif))
1578 ieee80211_csa_finish(vif);
1579 }
1580
1581 static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer * timer)1582 mac80211_hwsim_beacon(struct hrtimer *timer)
1583 {
1584 struct mac80211_hwsim_data *data =
1585 container_of(timer, struct mac80211_hwsim_data, beacon_timer);
1586 struct ieee80211_hw *hw = data->hw;
1587 u64 bcn_int = data->beacon_int;
1588
1589 if (!data->started)
1590 return HRTIMER_NORESTART;
1591
1592 ieee80211_iterate_active_interfaces_atomic(
1593 hw, IEEE80211_IFACE_ITER_NORMAL,
1594 mac80211_hwsim_beacon_tx, data);
1595
1596 /* beacon at new TBTT + beacon interval */
1597 if (data->bcn_delta) {
1598 bcn_int -= data->bcn_delta;
1599 data->bcn_delta = 0;
1600 }
1601 hrtimer_forward(&data->beacon_timer, hrtimer_get_expires(timer),
1602 ns_to_ktime(bcn_int * NSEC_PER_USEC));
1603 return HRTIMER_RESTART;
1604 }
1605
1606 static const char * const hwsim_chanwidths[] = {
1607 [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1608 [NL80211_CHAN_WIDTH_20] = "ht20",
1609 [NL80211_CHAN_WIDTH_40] = "ht40",
1610 [NL80211_CHAN_WIDTH_80] = "vht80",
1611 [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1612 [NL80211_CHAN_WIDTH_160] = "vht160",
1613 };
1614
mac80211_hwsim_config(struct ieee80211_hw * hw,u32 changed)1615 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1616 {
1617 struct mac80211_hwsim_data *data = hw->priv;
1618 struct ieee80211_conf *conf = &hw->conf;
1619 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1620 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1621 [IEEE80211_SMPS_OFF] = "off",
1622 [IEEE80211_SMPS_STATIC] = "static",
1623 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1624 };
1625 int idx;
1626
1627 if (conf->chandef.chan)
1628 wiphy_dbg(hw->wiphy,
1629 "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1630 __func__,
1631 conf->chandef.chan->center_freq,
1632 conf->chandef.center_freq1,
1633 conf->chandef.center_freq2,
1634 hwsim_chanwidths[conf->chandef.width],
1635 !!(conf->flags & IEEE80211_CONF_IDLE),
1636 !!(conf->flags & IEEE80211_CONF_PS),
1637 smps_modes[conf->smps_mode]);
1638 else
1639 wiphy_dbg(hw->wiphy,
1640 "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1641 __func__,
1642 !!(conf->flags & IEEE80211_CONF_IDLE),
1643 !!(conf->flags & IEEE80211_CONF_PS),
1644 smps_modes[conf->smps_mode]);
1645
1646 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1647
1648 WARN_ON(conf->chandef.chan && data->use_chanctx);
1649
1650 mutex_lock(&data->mutex);
1651 if (data->scanning && conf->chandef.chan) {
1652 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1653 if (data->survey_data[idx].channel == data->channel) {
1654 data->survey_data[idx].start =
1655 data->survey_data[idx].next_start;
1656 data->survey_data[idx].end = jiffies;
1657 break;
1658 }
1659 }
1660
1661 data->channel = conf->chandef.chan;
1662
1663 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1664 if (data->survey_data[idx].channel &&
1665 data->survey_data[idx].channel != data->channel)
1666 continue;
1667 data->survey_data[idx].channel = data->channel;
1668 data->survey_data[idx].next_start = jiffies;
1669 break;
1670 }
1671 } else {
1672 data->channel = conf->chandef.chan;
1673 }
1674 mutex_unlock(&data->mutex);
1675
1676 if (!data->started || !data->beacon_int)
1677 hrtimer_cancel(&data->beacon_timer);
1678 else if (!hrtimer_is_queued(&data->beacon_timer)) {
1679 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1680 u32 bcn_int = data->beacon_int;
1681 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1682
1683 hrtimer_start(&data->beacon_timer,
1684 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1685 HRTIMER_MODE_REL_SOFT);
1686 }
1687
1688 return 0;
1689 }
1690
1691
mac80211_hwsim_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1692 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1693 unsigned int changed_flags,
1694 unsigned int *total_flags,u64 multicast)
1695 {
1696 struct mac80211_hwsim_data *data = hw->priv;
1697
1698 wiphy_dbg(hw->wiphy, "%s\n", __func__);
1699
1700 data->rx_filter = 0;
1701 if (*total_flags & FIF_ALLMULTI)
1702 data->rx_filter |= FIF_ALLMULTI;
1703
1704 *total_flags = data->rx_filter;
1705 }
1706
mac80211_hwsim_bcn_en_iter(void * data,u8 * mac,struct ieee80211_vif * vif)1707 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1708 struct ieee80211_vif *vif)
1709 {
1710 unsigned int *count = data;
1711 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1712
1713 if (vp->bcn_en)
1714 (*count)++;
1715 }
1716
mac80211_hwsim_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)1717 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1718 struct ieee80211_vif *vif,
1719 struct ieee80211_bss_conf *info,
1720 u32 changed)
1721 {
1722 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1723 struct mac80211_hwsim_data *data = hw->priv;
1724
1725 hwsim_check_magic(vif);
1726
1727 wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1728 __func__, changed, vif->addr);
1729
1730 if (changed & BSS_CHANGED_BSSID) {
1731 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1732 __func__, info->bssid);
1733 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1734 }
1735
1736 if (changed & BSS_CHANGED_ASSOC) {
1737 wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
1738 info->assoc, info->aid);
1739 vp->assoc = info->assoc;
1740 vp->aid = info->aid;
1741 }
1742
1743 if (changed & BSS_CHANGED_BEACON_ENABLED) {
1744 wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
1745 info->enable_beacon, info->beacon_int);
1746 vp->bcn_en = info->enable_beacon;
1747 if (data->started &&
1748 !hrtimer_is_queued(&data->beacon_timer) &&
1749 info->enable_beacon) {
1750 u64 tsf, until_tbtt;
1751 u32 bcn_int;
1752 data->beacon_int = info->beacon_int * 1024;
1753 tsf = mac80211_hwsim_get_tsf(hw, vif);
1754 bcn_int = data->beacon_int;
1755 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1756
1757 hrtimer_start(&data->beacon_timer,
1758 ns_to_ktime(until_tbtt * NSEC_PER_USEC),
1759 HRTIMER_MODE_REL_SOFT);
1760 } else if (!info->enable_beacon) {
1761 unsigned int count = 0;
1762 ieee80211_iterate_active_interfaces_atomic(
1763 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1764 mac80211_hwsim_bcn_en_iter, &count);
1765 wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
1766 count);
1767 if (count == 0) {
1768 hrtimer_cancel(&data->beacon_timer);
1769 data->beacon_int = 0;
1770 }
1771 }
1772 }
1773
1774 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1775 wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
1776 info->use_cts_prot);
1777 }
1778
1779 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1780 wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
1781 info->use_short_preamble);
1782 }
1783
1784 if (changed & BSS_CHANGED_ERP_SLOT) {
1785 wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
1786 }
1787
1788 if (changed & BSS_CHANGED_HT) {
1789 wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
1790 info->ht_operation_mode);
1791 }
1792
1793 if (changed & BSS_CHANGED_BASIC_RATES) {
1794 wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
1795 (unsigned long long) info->basic_rates);
1796 }
1797
1798 if (changed & BSS_CHANGED_TXPOWER)
1799 wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
1800 }
1801
mac80211_hwsim_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1802 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1803 struct ieee80211_vif *vif,
1804 struct ieee80211_sta *sta)
1805 {
1806 hwsim_check_magic(vif);
1807 hwsim_set_sta_magic(sta);
1808
1809 return 0;
1810 }
1811
mac80211_hwsim_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)1812 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1813 struct ieee80211_vif *vif,
1814 struct ieee80211_sta *sta)
1815 {
1816 hwsim_check_magic(vif);
1817 hwsim_clear_sta_magic(sta);
1818
1819 return 0;
1820 }
1821
mac80211_hwsim_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)1822 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1823 struct ieee80211_vif *vif,
1824 enum sta_notify_cmd cmd,
1825 struct ieee80211_sta *sta)
1826 {
1827 hwsim_check_magic(vif);
1828
1829 switch (cmd) {
1830 case STA_NOTIFY_SLEEP:
1831 case STA_NOTIFY_AWAKE:
1832 /* TODO: make good use of these flags */
1833 break;
1834 default:
1835 WARN(1, "Invalid sta notify: %d\n", cmd);
1836 break;
1837 }
1838 }
1839
mac80211_hwsim_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)1840 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1841 struct ieee80211_sta *sta,
1842 bool set)
1843 {
1844 hwsim_check_sta_magic(sta);
1845 return 0;
1846 }
1847
mac80211_hwsim_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)1848 static int mac80211_hwsim_conf_tx(
1849 struct ieee80211_hw *hw,
1850 struct ieee80211_vif *vif, u16 queue,
1851 const struct ieee80211_tx_queue_params *params)
1852 {
1853 wiphy_dbg(hw->wiphy,
1854 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1855 __func__, queue,
1856 params->txop, params->cw_min,
1857 params->cw_max, params->aifs);
1858 return 0;
1859 }
1860
mac80211_hwsim_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)1861 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1862 struct survey_info *survey)
1863 {
1864 struct mac80211_hwsim_data *hwsim = hw->priv;
1865
1866 if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1867 return -ENOENT;
1868
1869 mutex_lock(&hwsim->mutex);
1870 survey->channel = hwsim->survey_data[idx].channel;
1871 if (!survey->channel) {
1872 mutex_unlock(&hwsim->mutex);
1873 return -ENOENT;
1874 }
1875
1876 /*
1877 * Magically conjured dummy values --- this is only ok for simulated hardware.
1878 *
1879 * A real driver which cannot determine real values noise MUST NOT
1880 * report any, especially not a magically conjured ones :-)
1881 */
1882 survey->filled = SURVEY_INFO_NOISE_DBM |
1883 SURVEY_INFO_TIME |
1884 SURVEY_INFO_TIME_BUSY;
1885 survey->noise = -92;
1886 survey->time =
1887 jiffies_to_msecs(hwsim->survey_data[idx].end -
1888 hwsim->survey_data[idx].start);
1889 /* report 12.5% of channel time is used */
1890 survey->time_busy = survey->time/8;
1891 mutex_unlock(&hwsim->mutex);
1892
1893 return 0;
1894 }
1895
1896 #ifdef CONFIG_NL80211_TESTMODE
1897 /*
1898 * This section contains example code for using netlink
1899 * attributes with the testmode command in nl80211.
1900 */
1901
1902 /* These enums need to be kept in sync with userspace */
1903 enum hwsim_testmode_attr {
1904 __HWSIM_TM_ATTR_INVALID = 0,
1905 HWSIM_TM_ATTR_CMD = 1,
1906 HWSIM_TM_ATTR_PS = 2,
1907
1908 /* keep last */
1909 __HWSIM_TM_ATTR_AFTER_LAST,
1910 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1911 };
1912
1913 enum hwsim_testmode_cmd {
1914 HWSIM_TM_CMD_SET_PS = 0,
1915 HWSIM_TM_CMD_GET_PS = 1,
1916 HWSIM_TM_CMD_STOP_QUEUES = 2,
1917 HWSIM_TM_CMD_WAKE_QUEUES = 3,
1918 };
1919
1920 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1921 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1922 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1923 };
1924
mac80211_hwsim_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)1925 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1926 struct ieee80211_vif *vif,
1927 void *data, int len)
1928 {
1929 struct mac80211_hwsim_data *hwsim = hw->priv;
1930 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1931 struct sk_buff *skb;
1932 int err, ps;
1933
1934 err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
1935 hwsim_testmode_policy, NULL);
1936 if (err)
1937 return err;
1938
1939 if (!tb[HWSIM_TM_ATTR_CMD])
1940 return -EINVAL;
1941
1942 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1943 case HWSIM_TM_CMD_SET_PS:
1944 if (!tb[HWSIM_TM_ATTR_PS])
1945 return -EINVAL;
1946 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1947 return hwsim_fops_ps_write(hwsim, ps);
1948 case HWSIM_TM_CMD_GET_PS:
1949 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1950 nla_total_size(sizeof(u32)));
1951 if (!skb)
1952 return -ENOMEM;
1953 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1954 goto nla_put_failure;
1955 return cfg80211_testmode_reply(skb);
1956 case HWSIM_TM_CMD_STOP_QUEUES:
1957 ieee80211_stop_queues(hw);
1958 return 0;
1959 case HWSIM_TM_CMD_WAKE_QUEUES:
1960 ieee80211_wake_queues(hw);
1961 return 0;
1962 default:
1963 return -EOPNOTSUPP;
1964 }
1965
1966 nla_put_failure:
1967 kfree_skb(skb);
1968 return -ENOBUFS;
1969 }
1970 #endif
1971
mac80211_hwsim_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)1972 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1973 struct ieee80211_vif *vif,
1974 struct ieee80211_ampdu_params *params)
1975 {
1976 struct ieee80211_sta *sta = params->sta;
1977 enum ieee80211_ampdu_mlme_action action = params->action;
1978 u16 tid = params->tid;
1979
1980 switch (action) {
1981 case IEEE80211_AMPDU_TX_START:
1982 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1983 break;
1984 case IEEE80211_AMPDU_TX_STOP_CONT:
1985 case IEEE80211_AMPDU_TX_STOP_FLUSH:
1986 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1987 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1988 break;
1989 case IEEE80211_AMPDU_TX_OPERATIONAL:
1990 break;
1991 case IEEE80211_AMPDU_RX_START:
1992 case IEEE80211_AMPDU_RX_STOP:
1993 break;
1994 default:
1995 return -EOPNOTSUPP;
1996 }
1997
1998 return 0;
1999 }
2000
mac80211_hwsim_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)2001 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2002 struct ieee80211_vif *vif,
2003 u32 queues, bool drop)
2004 {
2005 /* Not implemented, queues only on kernel side */
2006 }
2007
hw_scan_work(struct work_struct * work)2008 static void hw_scan_work(struct work_struct *work)
2009 {
2010 struct mac80211_hwsim_data *hwsim =
2011 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2012 struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2013 int dwell, i;
2014
2015 mutex_lock(&hwsim->mutex);
2016 if (hwsim->scan_chan_idx >= req->n_channels) {
2017 struct cfg80211_scan_info info = {
2018 .aborted = false,
2019 };
2020
2021 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2022 ieee80211_scan_completed(hwsim->hw, &info);
2023 hwsim->hw_scan_request = NULL;
2024 hwsim->hw_scan_vif = NULL;
2025 hwsim->tmp_chan = NULL;
2026 mutex_unlock(&hwsim->mutex);
2027 return;
2028 }
2029
2030 wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2031 req->channels[hwsim->scan_chan_idx]->center_freq);
2032
2033 hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2034 if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2035 IEEE80211_CHAN_RADAR) ||
2036 !req->n_ssids) {
2037 dwell = 120;
2038 } else {
2039 dwell = 30;
2040 /* send probes */
2041 for (i = 0; i < req->n_ssids; i++) {
2042 struct sk_buff *probe;
2043 struct ieee80211_mgmt *mgmt;
2044
2045 probe = ieee80211_probereq_get(hwsim->hw,
2046 hwsim->scan_addr,
2047 req->ssids[i].ssid,
2048 req->ssids[i].ssid_len,
2049 req->ie_len);
2050 if (!probe)
2051 continue;
2052
2053 mgmt = (struct ieee80211_mgmt *) probe->data;
2054 memcpy(mgmt->da, req->bssid, ETH_ALEN);
2055 memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2056
2057 if (req->ie_len)
2058 skb_put_data(probe, req->ie, req->ie_len);
2059
2060 local_bh_disable();
2061 mac80211_hwsim_tx_frame(hwsim->hw, probe,
2062 hwsim->tmp_chan);
2063 local_bh_enable();
2064 }
2065 }
2066 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2067 msecs_to_jiffies(dwell));
2068 hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2069 hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2070 hwsim->survey_data[hwsim->scan_chan_idx].end =
2071 jiffies + msecs_to_jiffies(dwell);
2072 hwsim->scan_chan_idx++;
2073 mutex_unlock(&hwsim->mutex);
2074 }
2075
mac80211_hwsim_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2076 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2077 struct ieee80211_vif *vif,
2078 struct ieee80211_scan_request *hw_req)
2079 {
2080 struct mac80211_hwsim_data *hwsim = hw->priv;
2081 struct cfg80211_scan_request *req = &hw_req->req;
2082
2083 mutex_lock(&hwsim->mutex);
2084 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2085 mutex_unlock(&hwsim->mutex);
2086 return -EBUSY;
2087 }
2088 hwsim->hw_scan_request = req;
2089 hwsim->hw_scan_vif = vif;
2090 hwsim->scan_chan_idx = 0;
2091 if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2092 get_random_mask_addr(hwsim->scan_addr,
2093 hw_req->req.mac_addr,
2094 hw_req->req.mac_addr_mask);
2095 else
2096 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2097 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2098 mutex_unlock(&hwsim->mutex);
2099
2100 wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2101
2102 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2103
2104 return 0;
2105 }
2106
mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2107 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2108 struct ieee80211_vif *vif)
2109 {
2110 struct mac80211_hwsim_data *hwsim = hw->priv;
2111 struct cfg80211_scan_info info = {
2112 .aborted = true,
2113 };
2114
2115 wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2116
2117 cancel_delayed_work_sync(&hwsim->hw_scan);
2118
2119 mutex_lock(&hwsim->mutex);
2120 ieee80211_scan_completed(hwsim->hw, &info);
2121 hwsim->tmp_chan = NULL;
2122 hwsim->hw_scan_request = NULL;
2123 hwsim->hw_scan_vif = NULL;
2124 mutex_unlock(&hwsim->mutex);
2125 }
2126
mac80211_hwsim_sw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const u8 * mac_addr)2127 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2128 struct ieee80211_vif *vif,
2129 const u8 *mac_addr)
2130 {
2131 struct mac80211_hwsim_data *hwsim = hw->priv;
2132
2133 mutex_lock(&hwsim->mutex);
2134
2135 if (hwsim->scanning) {
2136 pr_debug("two hwsim sw_scans detected!\n");
2137 goto out;
2138 }
2139
2140 pr_debug("hwsim sw_scan request, prepping stuff\n");
2141
2142 memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2143 hwsim->scanning = true;
2144 memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2145
2146 out:
2147 mutex_unlock(&hwsim->mutex);
2148 }
2149
mac80211_hwsim_sw_scan_complete(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2150 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2151 struct ieee80211_vif *vif)
2152 {
2153 struct mac80211_hwsim_data *hwsim = hw->priv;
2154
2155 mutex_lock(&hwsim->mutex);
2156
2157 pr_debug("hwsim sw_scan_complete\n");
2158 hwsim->scanning = false;
2159 eth_zero_addr(hwsim->scan_addr);
2160
2161 mutex_unlock(&hwsim->mutex);
2162 }
2163
hw_roc_start(struct work_struct * work)2164 static void hw_roc_start(struct work_struct *work)
2165 {
2166 struct mac80211_hwsim_data *hwsim =
2167 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2168
2169 mutex_lock(&hwsim->mutex);
2170
2171 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2172 hwsim->tmp_chan = hwsim->roc_chan;
2173 ieee80211_ready_on_channel(hwsim->hw);
2174
2175 ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2176 msecs_to_jiffies(hwsim->roc_duration));
2177
2178 mutex_unlock(&hwsim->mutex);
2179 }
2180
hw_roc_done(struct work_struct * work)2181 static void hw_roc_done(struct work_struct *work)
2182 {
2183 struct mac80211_hwsim_data *hwsim =
2184 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2185
2186 mutex_lock(&hwsim->mutex);
2187 ieee80211_remain_on_channel_expired(hwsim->hw);
2188 hwsim->tmp_chan = NULL;
2189 mutex_unlock(&hwsim->mutex);
2190
2191 wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2192 }
2193
mac80211_hwsim_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * chan,int duration,enum ieee80211_roc_type type)2194 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2195 struct ieee80211_vif *vif,
2196 struct ieee80211_channel *chan,
2197 int duration,
2198 enum ieee80211_roc_type type)
2199 {
2200 struct mac80211_hwsim_data *hwsim = hw->priv;
2201
2202 mutex_lock(&hwsim->mutex);
2203 if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2204 mutex_unlock(&hwsim->mutex);
2205 return -EBUSY;
2206 }
2207
2208 hwsim->roc_chan = chan;
2209 hwsim->roc_duration = duration;
2210 mutex_unlock(&hwsim->mutex);
2211
2212 wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2213 chan->center_freq, duration);
2214 ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2215
2216 return 0;
2217 }
2218
mac80211_hwsim_croc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2219 static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
2220 struct ieee80211_vif *vif)
2221 {
2222 struct mac80211_hwsim_data *hwsim = hw->priv;
2223
2224 cancel_delayed_work_sync(&hwsim->roc_start);
2225 cancel_delayed_work_sync(&hwsim->roc_done);
2226
2227 mutex_lock(&hwsim->mutex);
2228 hwsim->tmp_chan = NULL;
2229 mutex_unlock(&hwsim->mutex);
2230
2231 wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2232
2233 return 0;
2234 }
2235
mac80211_hwsim_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2236 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2237 struct ieee80211_chanctx_conf *ctx)
2238 {
2239 hwsim_set_chanctx_magic(ctx);
2240 wiphy_dbg(hw->wiphy,
2241 "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2242 ctx->def.chan->center_freq, ctx->def.width,
2243 ctx->def.center_freq1, ctx->def.center_freq2);
2244 return 0;
2245 }
2246
mac80211_hwsim_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)2247 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2248 struct ieee80211_chanctx_conf *ctx)
2249 {
2250 wiphy_dbg(hw->wiphy,
2251 "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2252 ctx->def.chan->center_freq, ctx->def.width,
2253 ctx->def.center_freq1, ctx->def.center_freq2);
2254 hwsim_check_chanctx_magic(ctx);
2255 hwsim_clear_chanctx_magic(ctx);
2256 }
2257
mac80211_hwsim_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)2258 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2259 struct ieee80211_chanctx_conf *ctx,
2260 u32 changed)
2261 {
2262 hwsim_check_chanctx_magic(ctx);
2263 wiphy_dbg(hw->wiphy,
2264 "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2265 ctx->def.chan->center_freq, ctx->def.width,
2266 ctx->def.center_freq1, ctx->def.center_freq2);
2267 }
2268
mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2269 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2270 struct ieee80211_vif *vif,
2271 struct ieee80211_chanctx_conf *ctx)
2272 {
2273 hwsim_check_magic(vif);
2274 hwsim_check_chanctx_magic(ctx);
2275
2276 return 0;
2277 }
2278
mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx)2279 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2280 struct ieee80211_vif *vif,
2281 struct ieee80211_chanctx_conf *ctx)
2282 {
2283 hwsim_check_magic(vif);
2284 hwsim_check_chanctx_magic(ctx);
2285 }
2286
2287 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2288 "tx_pkts_nic",
2289 "tx_bytes_nic",
2290 "rx_pkts_nic",
2291 "rx_bytes_nic",
2292 "d_tx_dropped",
2293 "d_tx_failed",
2294 "d_ps_mode",
2295 "d_group",
2296 };
2297
2298 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2299
mac80211_hwsim_get_et_strings(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 sset,u8 * data)2300 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2301 struct ieee80211_vif *vif,
2302 u32 sset, u8 *data)
2303 {
2304 if (sset == ETH_SS_STATS)
2305 memcpy(data, *mac80211_hwsim_gstrings_stats,
2306 sizeof(mac80211_hwsim_gstrings_stats));
2307 }
2308
mac80211_hwsim_get_et_sset_count(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int sset)2309 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2310 struct ieee80211_vif *vif, int sset)
2311 {
2312 if (sset == ETH_SS_STATS)
2313 return MAC80211_HWSIM_SSTATS_LEN;
2314 return 0;
2315 }
2316
mac80211_hwsim_get_et_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ethtool_stats * stats,u64 * data)2317 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2318 struct ieee80211_vif *vif,
2319 struct ethtool_stats *stats, u64 *data)
2320 {
2321 struct mac80211_hwsim_data *ar = hw->priv;
2322 int i = 0;
2323
2324 data[i++] = ar->tx_pkts;
2325 data[i++] = ar->tx_bytes;
2326 data[i++] = ar->rx_pkts;
2327 data[i++] = ar->rx_bytes;
2328 data[i++] = ar->tx_dropped;
2329 data[i++] = ar->tx_failed;
2330 data[i++] = ar->ps;
2331 data[i++] = ar->group;
2332
2333 WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2334 }
2335
2336 #define HWSIM_COMMON_OPS \
2337 .tx = mac80211_hwsim_tx, \
2338 .start = mac80211_hwsim_start, \
2339 .stop = mac80211_hwsim_stop, \
2340 .add_interface = mac80211_hwsim_add_interface, \
2341 .change_interface = mac80211_hwsim_change_interface, \
2342 .remove_interface = mac80211_hwsim_remove_interface, \
2343 .config = mac80211_hwsim_config, \
2344 .configure_filter = mac80211_hwsim_configure_filter, \
2345 .bss_info_changed = mac80211_hwsim_bss_info_changed, \
2346 .sta_add = mac80211_hwsim_sta_add, \
2347 .sta_remove = mac80211_hwsim_sta_remove, \
2348 .sta_notify = mac80211_hwsim_sta_notify, \
2349 .set_tim = mac80211_hwsim_set_tim, \
2350 .conf_tx = mac80211_hwsim_conf_tx, \
2351 .get_survey = mac80211_hwsim_get_survey, \
2352 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
2353 .ampdu_action = mac80211_hwsim_ampdu_action, \
2354 .flush = mac80211_hwsim_flush, \
2355 .get_tsf = mac80211_hwsim_get_tsf, \
2356 .set_tsf = mac80211_hwsim_set_tsf, \
2357 .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
2358 .get_et_stats = mac80211_hwsim_get_et_stats, \
2359 .get_et_strings = mac80211_hwsim_get_et_strings,
2360
2361 static const struct ieee80211_ops mac80211_hwsim_ops = {
2362 HWSIM_COMMON_OPS
2363 .sw_scan_start = mac80211_hwsim_sw_scan,
2364 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2365 };
2366
2367 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2368 HWSIM_COMMON_OPS
2369 .hw_scan = mac80211_hwsim_hw_scan,
2370 .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2371 .sw_scan_start = NULL,
2372 .sw_scan_complete = NULL,
2373 .remain_on_channel = mac80211_hwsim_roc,
2374 .cancel_remain_on_channel = mac80211_hwsim_croc,
2375 .add_chanctx = mac80211_hwsim_add_chanctx,
2376 .remove_chanctx = mac80211_hwsim_remove_chanctx,
2377 .change_chanctx = mac80211_hwsim_change_chanctx,
2378 .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2379 .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2380 };
2381
2382 struct hwsim_new_radio_params {
2383 unsigned int channels;
2384 const char *reg_alpha2;
2385 const struct ieee80211_regdomain *regd;
2386 bool reg_strict;
2387 bool p2p_device;
2388 bool use_chanctx;
2389 bool destroy_on_close;
2390 const char *hwname;
2391 bool no_vif;
2392 const u8 *perm_addr;
2393 u32 iftypes;
2394 u32 *ciphers;
2395 u8 n_ciphers;
2396 };
2397
hwsim_mcast_config_msg(struct sk_buff * mcast_skb,struct genl_info * info)2398 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2399 struct genl_info *info)
2400 {
2401 if (info)
2402 genl_notify(&hwsim_genl_family, mcast_skb, info,
2403 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2404 else
2405 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2406 HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2407 }
2408
append_radio_msg(struct sk_buff * skb,int id,struct hwsim_new_radio_params * param)2409 static int append_radio_msg(struct sk_buff *skb, int id,
2410 struct hwsim_new_radio_params *param)
2411 {
2412 int ret;
2413
2414 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2415 if (ret < 0)
2416 return ret;
2417
2418 if (param->channels) {
2419 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2420 if (ret < 0)
2421 return ret;
2422 }
2423
2424 if (param->reg_alpha2) {
2425 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2426 param->reg_alpha2);
2427 if (ret < 0)
2428 return ret;
2429 }
2430
2431 if (param->regd) {
2432 int i;
2433
2434 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2435 if (hwsim_world_regdom_custom[i] != param->regd)
2436 continue;
2437
2438 ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2439 if (ret < 0)
2440 return ret;
2441 break;
2442 }
2443 }
2444
2445 if (param->reg_strict) {
2446 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2447 if (ret < 0)
2448 return ret;
2449 }
2450
2451 if (param->p2p_device) {
2452 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2453 if (ret < 0)
2454 return ret;
2455 }
2456
2457 if (param->use_chanctx) {
2458 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2459 if (ret < 0)
2460 return ret;
2461 }
2462
2463 if (param->hwname) {
2464 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2465 strlen(param->hwname), param->hwname);
2466 if (ret < 0)
2467 return ret;
2468 }
2469
2470 return 0;
2471 }
2472
hwsim_mcast_new_radio(int id,struct genl_info * info,struct hwsim_new_radio_params * param)2473 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2474 struct hwsim_new_radio_params *param)
2475 {
2476 struct sk_buff *mcast_skb;
2477 void *data;
2478
2479 mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2480 if (!mcast_skb)
2481 return;
2482
2483 data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2484 HWSIM_CMD_NEW_RADIO);
2485 if (!data)
2486 goto out_err;
2487
2488 if (append_radio_msg(mcast_skb, id, param) < 0)
2489 goto out_err;
2490
2491 genlmsg_end(mcast_skb, data);
2492
2493 hwsim_mcast_config_msg(mcast_skb, info);
2494 return;
2495
2496 out_err:
2497 nlmsg_free(mcast_skb);
2498 }
2499
2500 static const struct ieee80211_sband_iftype_data he_capa_2ghz[] = {
2501 {
2502 /* TODO: should we support other types, e.g., P2P?*/
2503 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2504 BIT(NL80211_IFTYPE_AP),
2505 .he_cap = {
2506 .has_he = true,
2507 .he_cap_elem = {
2508 .mac_cap_info[0] =
2509 IEEE80211_HE_MAC_CAP0_HTC_HE,
2510 .mac_cap_info[1] =
2511 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2512 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2513 .mac_cap_info[2] =
2514 IEEE80211_HE_MAC_CAP2_BSR |
2515 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2516 IEEE80211_HE_MAC_CAP2_ACK_EN,
2517 .mac_cap_info[3] =
2518 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2519 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2520 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2521 .phy_cap_info[1] =
2522 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2523 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2524 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2525 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2526 .phy_cap_info[2] =
2527 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2528 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2529 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2530 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2531 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2532
2533 /* Leave all the other PHY capability bytes
2534 * unset, as DCM, beam forming, RU and PPE
2535 * threshold information are not supported
2536 */
2537 },
2538 .he_mcs_nss_supp = {
2539 .rx_mcs_80 = cpu_to_le16(0xfffa),
2540 .tx_mcs_80 = cpu_to_le16(0xfffa),
2541 .rx_mcs_160 = cpu_to_le16(0xffff),
2542 .tx_mcs_160 = cpu_to_le16(0xffff),
2543 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2544 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2545 },
2546 },
2547 },
2548 #ifdef CONFIG_MAC80211_MESH
2549 {
2550 /* TODO: should we support other types, e.g., IBSS?*/
2551 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2552 .he_cap = {
2553 .has_he = true,
2554 .he_cap_elem = {
2555 .mac_cap_info[0] =
2556 IEEE80211_HE_MAC_CAP0_HTC_HE,
2557 .mac_cap_info[1] =
2558 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2559 .mac_cap_info[2] =
2560 IEEE80211_HE_MAC_CAP2_ACK_EN,
2561 .mac_cap_info[3] =
2562 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2563 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2564 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2565 .phy_cap_info[1] =
2566 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2567 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2568 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2569 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2570 .phy_cap_info[2] = 0,
2571
2572 /* Leave all the other PHY capability bytes
2573 * unset, as DCM, beam forming, RU and PPE
2574 * threshold information are not supported
2575 */
2576 },
2577 .he_mcs_nss_supp = {
2578 .rx_mcs_80 = cpu_to_le16(0xfffa),
2579 .tx_mcs_80 = cpu_to_le16(0xfffa),
2580 .rx_mcs_160 = cpu_to_le16(0xffff),
2581 .tx_mcs_160 = cpu_to_le16(0xffff),
2582 .rx_mcs_80p80 = cpu_to_le16(0xffff),
2583 .tx_mcs_80p80 = cpu_to_le16(0xffff),
2584 },
2585 },
2586 },
2587 #endif
2588 };
2589
2590 static const struct ieee80211_sband_iftype_data he_capa_5ghz[] = {
2591 {
2592 /* TODO: should we support other types, e.g., P2P?*/
2593 .types_mask = BIT(NL80211_IFTYPE_STATION) |
2594 BIT(NL80211_IFTYPE_AP),
2595 .he_cap = {
2596 .has_he = true,
2597 .he_cap_elem = {
2598 .mac_cap_info[0] =
2599 IEEE80211_HE_MAC_CAP0_HTC_HE,
2600 .mac_cap_info[1] =
2601 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2602 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2603 .mac_cap_info[2] =
2604 IEEE80211_HE_MAC_CAP2_BSR |
2605 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2606 IEEE80211_HE_MAC_CAP2_ACK_EN,
2607 .mac_cap_info[3] =
2608 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2609 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2610 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2611 .phy_cap_info[0] =
2612 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2613 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2614 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2615 .phy_cap_info[1] =
2616 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2617 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2618 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2619 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2620 .phy_cap_info[2] =
2621 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2622 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2623 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2624 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2625 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2626
2627 /* Leave all the other PHY capability bytes
2628 * unset, as DCM, beam forming, RU and PPE
2629 * threshold information are not supported
2630 */
2631 },
2632 .he_mcs_nss_supp = {
2633 .rx_mcs_80 = cpu_to_le16(0xfffa),
2634 .tx_mcs_80 = cpu_to_le16(0xfffa),
2635 .rx_mcs_160 = cpu_to_le16(0xfffa),
2636 .tx_mcs_160 = cpu_to_le16(0xfffa),
2637 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2638 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2639 },
2640 },
2641 },
2642 #ifdef CONFIG_MAC80211_MESH
2643 {
2644 /* TODO: should we support other types, e.g., IBSS?*/
2645 .types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
2646 .he_cap = {
2647 .has_he = true,
2648 .he_cap_elem = {
2649 .mac_cap_info[0] =
2650 IEEE80211_HE_MAC_CAP0_HTC_HE,
2651 .mac_cap_info[1] =
2652 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2653 .mac_cap_info[2] =
2654 IEEE80211_HE_MAC_CAP2_ACK_EN,
2655 .mac_cap_info[3] =
2656 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2657 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2658 .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2659 .phy_cap_info[0] =
2660 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2661 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2662 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2663 .phy_cap_info[1] =
2664 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2665 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2666 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2667 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2668 .phy_cap_info[2] = 0,
2669
2670 /* Leave all the other PHY capability bytes
2671 * unset, as DCM, beam forming, RU and PPE
2672 * threshold information are not supported
2673 */
2674 },
2675 .he_mcs_nss_supp = {
2676 .rx_mcs_80 = cpu_to_le16(0xfffa),
2677 .tx_mcs_80 = cpu_to_le16(0xfffa),
2678 .rx_mcs_160 = cpu_to_le16(0xfffa),
2679 .tx_mcs_160 = cpu_to_le16(0xfffa),
2680 .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2681 .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2682 },
2683 },
2684 },
2685 #endif
2686 };
2687
mac80211_hwsim_he_capab(struct ieee80211_supported_band * sband)2688 static void mac80211_hwsim_he_capab(struct ieee80211_supported_band *sband)
2689 {
2690 u16 n_iftype_data;
2691
2692 if (sband->band == NL80211_BAND_2GHZ) {
2693 n_iftype_data = ARRAY_SIZE(he_capa_2ghz);
2694 sband->iftype_data =
2695 (struct ieee80211_sband_iftype_data *)he_capa_2ghz;
2696 } else if (sband->band == NL80211_BAND_5GHZ) {
2697 n_iftype_data = ARRAY_SIZE(he_capa_5ghz);
2698 sband->iftype_data =
2699 (struct ieee80211_sband_iftype_data *)he_capa_5ghz;
2700 } else {
2701 return;
2702 }
2703
2704 sband->n_iftype_data = n_iftype_data;
2705 }
2706
2707 #ifdef CONFIG_MAC80211_MESH
2708 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2709 #else
2710 #define HWSIM_MESH_BIT 0
2711 #endif
2712
2713 #define HWSIM_DEFAULT_IF_LIMIT \
2714 (BIT(NL80211_IFTYPE_STATION) | \
2715 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2716 BIT(NL80211_IFTYPE_AP) | \
2717 BIT(NL80211_IFTYPE_P2P_GO) | \
2718 HWSIM_MESH_BIT)
2719
2720 #define HWSIM_IFTYPE_SUPPORT_MASK \
2721 (BIT(NL80211_IFTYPE_STATION) | \
2722 BIT(NL80211_IFTYPE_AP) | \
2723 BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2724 BIT(NL80211_IFTYPE_P2P_GO) | \
2725 BIT(NL80211_IFTYPE_ADHOC) | \
2726 BIT(NL80211_IFTYPE_MESH_POINT))
2727
mac80211_hwsim_new_radio(struct genl_info * info,struct hwsim_new_radio_params * param)2728 static int mac80211_hwsim_new_radio(struct genl_info *info,
2729 struct hwsim_new_radio_params *param)
2730 {
2731 int err;
2732 u8 addr[ETH_ALEN];
2733 struct mac80211_hwsim_data *data;
2734 struct ieee80211_hw *hw;
2735 enum nl80211_band band;
2736 const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2737 struct net *net;
2738 int idx, i;
2739 int n_limits = 0;
2740
2741 if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2742 return -EINVAL;
2743
2744 spin_lock_bh(&hwsim_radio_lock);
2745 idx = hwsim_radio_idx++;
2746 spin_unlock_bh(&hwsim_radio_lock);
2747
2748 if (param->use_chanctx)
2749 ops = &mac80211_hwsim_mchan_ops;
2750 hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2751 if (!hw) {
2752 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2753 err = -ENOMEM;
2754 goto failed;
2755 }
2756
2757 /* ieee80211_alloc_hw_nm may have used a default name */
2758 param->hwname = wiphy_name(hw->wiphy);
2759
2760 if (info)
2761 net = genl_info_net(info);
2762 else
2763 net = &init_net;
2764 wiphy_net_set(hw->wiphy, net);
2765
2766 data = hw->priv;
2767 data->hw = hw;
2768
2769 data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2770 if (IS_ERR(data->dev)) {
2771 printk(KERN_DEBUG
2772 "mac80211_hwsim: device_create failed (%ld)\n",
2773 PTR_ERR(data->dev));
2774 err = -ENOMEM;
2775 goto failed_drvdata;
2776 }
2777 data->dev->driver = &mac80211_hwsim_driver.driver;
2778 err = device_bind_driver(data->dev);
2779 if (err != 0) {
2780 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2781 err);
2782 goto failed_bind;
2783 }
2784
2785 skb_queue_head_init(&data->pending);
2786
2787 SET_IEEE80211_DEV(hw, data->dev);
2788 if (!param->perm_addr) {
2789 eth_zero_addr(addr);
2790 addr[0] = 0x02;
2791 addr[3] = idx >> 8;
2792 addr[4] = idx;
2793 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2794 /* Why need here second address ? */
2795 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2796 data->addresses[1].addr[0] |= 0x40;
2797 hw->wiphy->n_addresses = 2;
2798 hw->wiphy->addresses = data->addresses;
2799 /* possible address clash is checked at hash table insertion */
2800 } else {
2801 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2802 /* compatibility with automatically generated mac addr */
2803 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2804 hw->wiphy->n_addresses = 2;
2805 hw->wiphy->addresses = data->addresses;
2806 }
2807
2808 data->channels = param->channels;
2809 data->use_chanctx = param->use_chanctx;
2810 data->idx = idx;
2811 data->destroy_on_close = param->destroy_on_close;
2812 if (info)
2813 data->portid = info->snd_portid;
2814
2815 /* setup interface limits, only on interface types we support */
2816 if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2817 data->if_limits[n_limits].max = 1;
2818 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2819 n_limits++;
2820 }
2821
2822 if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2823 data->if_limits[n_limits].max = 2048;
2824 /*
2825 * For this case, we may only support a subset of
2826 * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2827 * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2828 */
2829 data->if_limits[n_limits].types =
2830 HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2831 n_limits++;
2832 }
2833
2834 if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2835 data->if_limits[n_limits].max = 1;
2836 data->if_limits[n_limits].types =
2837 BIT(NL80211_IFTYPE_P2P_DEVICE);
2838 n_limits++;
2839 }
2840
2841 if (data->use_chanctx) {
2842 hw->wiphy->max_scan_ssids = 255;
2843 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2844 hw->wiphy->max_remain_on_channel_duration = 1000;
2845 data->if_combination.radar_detect_widths = 0;
2846 data->if_combination.num_different_channels = data->channels;
2847 } else {
2848 data->if_combination.num_different_channels = 1;
2849 data->if_combination.radar_detect_widths =
2850 BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2851 BIT(NL80211_CHAN_WIDTH_20) |
2852 BIT(NL80211_CHAN_WIDTH_40) |
2853 BIT(NL80211_CHAN_WIDTH_80) |
2854 BIT(NL80211_CHAN_WIDTH_160);
2855 }
2856
2857 if (!n_limits) {
2858 err = -EINVAL;
2859 goto failed_hw;
2860 }
2861
2862 data->if_combination.max_interfaces = 0;
2863 for (i = 0; i < n_limits; i++)
2864 data->if_combination.max_interfaces +=
2865 data->if_limits[i].max;
2866
2867 data->if_combination.n_limits = n_limits;
2868 data->if_combination.limits = data->if_limits;
2869
2870 /*
2871 * If we actually were asked to support combinations,
2872 * advertise them - if there's only a single thing like
2873 * only IBSS then don't advertise it as combinations.
2874 */
2875 if (data->if_combination.max_interfaces > 1) {
2876 hw->wiphy->iface_combinations = &data->if_combination;
2877 hw->wiphy->n_iface_combinations = 1;
2878 }
2879
2880 if (param->ciphers) {
2881 memcpy(data->ciphers, param->ciphers,
2882 param->n_ciphers * sizeof(u32));
2883 hw->wiphy->cipher_suites = data->ciphers;
2884 hw->wiphy->n_cipher_suites = param->n_ciphers;
2885 }
2886
2887 INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2888 INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2889 INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2890
2891 hw->queues = 5;
2892 hw->offchannel_tx_hw_queue = 4;
2893
2894 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2895 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2896 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2897 ieee80211_hw_set(hw, QUEUE_CONTROL);
2898 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2899 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2900 ieee80211_hw_set(hw, MFP_CAPABLE);
2901 ieee80211_hw_set(hw, SIGNAL_DBM);
2902 ieee80211_hw_set(hw, SUPPORTS_PS);
2903 ieee80211_hw_set(hw, TDLS_WIDER_BW);
2904 if (rctbl)
2905 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2906 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
2907
2908 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2909 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2910 WIPHY_FLAG_AP_UAPSD |
2911 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2912 hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2913 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2914 NL80211_FEATURE_STATIC_SMPS |
2915 NL80211_FEATURE_DYNAMIC_SMPS |
2916 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2917 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2918
2919 hw->wiphy->interface_modes = param->iftypes;
2920
2921 /* ask mac80211 to reserve space for magic */
2922 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2923 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2924 hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2925
2926 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2927 sizeof(hwsim_channels_2ghz));
2928 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2929 sizeof(hwsim_channels_5ghz));
2930 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2931
2932 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2933 struct ieee80211_supported_band *sband = &data->bands[band];
2934
2935 sband->band = band;
2936
2937 switch (band) {
2938 case NL80211_BAND_2GHZ:
2939 sband->channels = data->channels_2ghz;
2940 sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2941 sband->bitrates = data->rates;
2942 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2943 break;
2944 case NL80211_BAND_5GHZ:
2945 sband->channels = data->channels_5ghz;
2946 sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2947 sband->bitrates = data->rates + 4;
2948 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2949
2950 sband->vht_cap.vht_supported = true;
2951 sband->vht_cap.cap =
2952 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2953 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2954 IEEE80211_VHT_CAP_RXLDPC |
2955 IEEE80211_VHT_CAP_SHORT_GI_80 |
2956 IEEE80211_VHT_CAP_SHORT_GI_160 |
2957 IEEE80211_VHT_CAP_TXSTBC |
2958 IEEE80211_VHT_CAP_RXSTBC_4 |
2959 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2960 sband->vht_cap.vht_mcs.rx_mcs_map =
2961 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2962 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2963 IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2964 IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2965 IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2966 IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2967 IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2968 IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2969 sband->vht_cap.vht_mcs.tx_mcs_map =
2970 sband->vht_cap.vht_mcs.rx_mcs_map;
2971 break;
2972 default:
2973 continue;
2974 }
2975
2976 sband->ht_cap.ht_supported = true;
2977 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2978 IEEE80211_HT_CAP_GRN_FLD |
2979 IEEE80211_HT_CAP_SGI_20 |
2980 IEEE80211_HT_CAP_SGI_40 |
2981 IEEE80211_HT_CAP_DSSSCCK40;
2982 sband->ht_cap.ampdu_factor = 0x3;
2983 sband->ht_cap.ampdu_density = 0x6;
2984 memset(&sband->ht_cap.mcs, 0,
2985 sizeof(sband->ht_cap.mcs));
2986 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2987 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2988 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2989
2990 mac80211_hwsim_he_capab(sband);
2991
2992 hw->wiphy->bands[band] = sband;
2993 }
2994
2995 /* By default all radios belong to the first group */
2996 data->group = 1;
2997 mutex_init(&data->mutex);
2998
2999 data->netgroup = hwsim_net_get_netgroup(net);
3000 data->wmediumd = hwsim_net_get_wmediumd(net);
3001
3002 /* Enable frame retransmissions for lossy channels */
3003 hw->max_rates = 4;
3004 hw->max_rate_tries = 11;
3005
3006 hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
3007 hw->wiphy->n_vendor_commands =
3008 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
3009 hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
3010 hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
3011
3012 if (param->reg_strict)
3013 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
3014 if (param->regd) {
3015 data->regd = param->regd;
3016 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
3017 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
3018 /* give the regulatory workqueue a chance to run */
3019 schedule_timeout_interruptible(1);
3020 }
3021
3022 if (param->no_vif)
3023 ieee80211_hw_set(hw, NO_AUTO_VIF);
3024
3025 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
3026
3027 hrtimer_init(&data->beacon_timer, CLOCK_MONOTONIC,
3028 HRTIMER_MODE_ABS_SOFT);
3029 data->beacon_timer.function = mac80211_hwsim_beacon;
3030
3031 err = ieee80211_register_hw(hw);
3032 if (err < 0) {
3033 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
3034 err);
3035 goto failed_hw;
3036 }
3037
3038 wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
3039
3040 if (param->reg_alpha2) {
3041 data->alpha2[0] = param->reg_alpha2[0];
3042 data->alpha2[1] = param->reg_alpha2[1];
3043 regulatory_hint(hw->wiphy, param->reg_alpha2);
3044 }
3045
3046 data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
3047 debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
3048 debugfs_create_file("group", 0666, data->debugfs, data,
3049 &hwsim_fops_group);
3050 if (!data->use_chanctx)
3051 debugfs_create_file("dfs_simulate_radar", 0222,
3052 data->debugfs,
3053 data, &hwsim_simulate_radar);
3054
3055 spin_lock_bh(&hwsim_radio_lock);
3056 err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
3057 hwsim_rht_params);
3058 if (err < 0) {
3059 if (info) {
3060 GENL_SET_ERR_MSG(info, "perm addr already present");
3061 NL_SET_BAD_ATTR(info->extack,
3062 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3063 }
3064 spin_unlock_bh(&hwsim_radio_lock);
3065 goto failed_final_insert;
3066 }
3067
3068 list_add_tail(&data->list, &hwsim_radios);
3069 hwsim_radios_generation++;
3070 spin_unlock_bh(&hwsim_radio_lock);
3071
3072 hwsim_mcast_new_radio(idx, info, param);
3073
3074 return idx;
3075
3076 failed_final_insert:
3077 debugfs_remove_recursive(data->debugfs);
3078 ieee80211_unregister_hw(data->hw);
3079 failed_hw:
3080 device_release_driver(data->dev);
3081 failed_bind:
3082 device_unregister(data->dev);
3083 failed_drvdata:
3084 ieee80211_free_hw(hw);
3085 failed:
3086 return err;
3087 }
3088
hwsim_mcast_del_radio(int id,const char * hwname,struct genl_info * info)3089 static void hwsim_mcast_del_radio(int id, const char *hwname,
3090 struct genl_info *info)
3091 {
3092 struct sk_buff *skb;
3093 void *data;
3094 int ret;
3095
3096 skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
3097 if (!skb)
3098 return;
3099
3100 data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
3101 HWSIM_CMD_DEL_RADIO);
3102 if (!data)
3103 goto error;
3104
3105 ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3106 if (ret < 0)
3107 goto error;
3108
3109 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3110 hwname);
3111 if (ret < 0)
3112 goto error;
3113
3114 genlmsg_end(skb, data);
3115
3116 hwsim_mcast_config_msg(skb, info);
3117
3118 return;
3119
3120 error:
3121 nlmsg_free(skb);
3122 }
3123
mac80211_hwsim_del_radio(struct mac80211_hwsim_data * data,const char * hwname,struct genl_info * info)3124 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3125 const char *hwname,
3126 struct genl_info *info)
3127 {
3128 hwsim_mcast_del_radio(data->idx, hwname, info);
3129 debugfs_remove_recursive(data->debugfs);
3130 ieee80211_unregister_hw(data->hw);
3131 device_release_driver(data->dev);
3132 device_unregister(data->dev);
3133 ieee80211_free_hw(data->hw);
3134 }
3135
mac80211_hwsim_get_radio(struct sk_buff * skb,struct mac80211_hwsim_data * data,u32 portid,u32 seq,struct netlink_callback * cb,int flags)3136 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3137 struct mac80211_hwsim_data *data,
3138 u32 portid, u32 seq,
3139 struct netlink_callback *cb, int flags)
3140 {
3141 void *hdr;
3142 struct hwsim_new_radio_params param = { };
3143 int res = -EMSGSIZE;
3144
3145 hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3146 HWSIM_CMD_GET_RADIO);
3147 if (!hdr)
3148 return -EMSGSIZE;
3149
3150 if (cb)
3151 genl_dump_check_consistent(cb, hdr);
3152
3153 if (data->alpha2[0] && data->alpha2[1])
3154 param.reg_alpha2 = data->alpha2;
3155
3156 param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3157 REGULATORY_STRICT_REG);
3158 param.p2p_device = !!(data->hw->wiphy->interface_modes &
3159 BIT(NL80211_IFTYPE_P2P_DEVICE));
3160 param.use_chanctx = data->use_chanctx;
3161 param.regd = data->regd;
3162 param.channels = data->channels;
3163 param.hwname = wiphy_name(data->hw->wiphy);
3164
3165 res = append_radio_msg(skb, data->idx, ¶m);
3166 if (res < 0)
3167 goto out_err;
3168
3169 genlmsg_end(skb, hdr);
3170 return 0;
3171
3172 out_err:
3173 genlmsg_cancel(skb, hdr);
3174 return res;
3175 }
3176
mac80211_hwsim_free(void)3177 static void mac80211_hwsim_free(void)
3178 {
3179 struct mac80211_hwsim_data *data;
3180
3181 spin_lock_bh(&hwsim_radio_lock);
3182 while ((data = list_first_entry_or_null(&hwsim_radios,
3183 struct mac80211_hwsim_data,
3184 list))) {
3185 list_del(&data->list);
3186 spin_unlock_bh(&hwsim_radio_lock);
3187 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3188 NULL);
3189 spin_lock_bh(&hwsim_radio_lock);
3190 }
3191 spin_unlock_bh(&hwsim_radio_lock);
3192 class_destroy(hwsim_class);
3193 }
3194
3195 static const struct net_device_ops hwsim_netdev_ops = {
3196 .ndo_start_xmit = hwsim_mon_xmit,
3197 .ndo_set_mac_address = eth_mac_addr,
3198 .ndo_validate_addr = eth_validate_addr,
3199 };
3200
hwsim_mon_setup(struct net_device * dev)3201 static void hwsim_mon_setup(struct net_device *dev)
3202 {
3203 dev->netdev_ops = &hwsim_netdev_ops;
3204 dev->needs_free_netdev = true;
3205 ether_setup(dev);
3206 dev->priv_flags |= IFF_NO_QUEUE;
3207 dev->type = ARPHRD_IEEE80211_RADIOTAP;
3208 eth_zero_addr(dev->dev_addr);
3209 dev->dev_addr[0] = 0x12;
3210 }
3211
get_hwsim_data_ref_from_addr(const u8 * addr)3212 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3213 {
3214 return rhashtable_lookup_fast(&hwsim_radios_rht,
3215 addr,
3216 hwsim_rht_params);
3217 }
3218
hwsim_register_wmediumd(struct net * net,u32 portid)3219 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3220 {
3221 struct mac80211_hwsim_data *data;
3222
3223 hwsim_net_set_wmediumd(net, portid);
3224
3225 spin_lock_bh(&hwsim_radio_lock);
3226 list_for_each_entry(data, &hwsim_radios, list) {
3227 if (data->netgroup == hwsim_net_get_netgroup(net))
3228 data->wmediumd = portid;
3229 }
3230 spin_unlock_bh(&hwsim_radio_lock);
3231 }
3232
hwsim_tx_info_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3233 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3234 struct genl_info *info)
3235 {
3236
3237 struct ieee80211_hdr *hdr;
3238 struct mac80211_hwsim_data *data2;
3239 struct ieee80211_tx_info *txi;
3240 struct hwsim_tx_rate *tx_attempts;
3241 u64 ret_skb_cookie;
3242 struct sk_buff *skb, *tmp;
3243 const u8 *src;
3244 unsigned int hwsim_flags;
3245 int i;
3246 bool found = false;
3247
3248 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3249 !info->attrs[HWSIM_ATTR_FLAGS] ||
3250 !info->attrs[HWSIM_ATTR_COOKIE] ||
3251 !info->attrs[HWSIM_ATTR_SIGNAL] ||
3252 !info->attrs[HWSIM_ATTR_TX_INFO])
3253 goto out;
3254
3255 src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3256 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3257 ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3258
3259 data2 = get_hwsim_data_ref_from_addr(src);
3260 if (!data2)
3261 goto out;
3262
3263 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3264 goto out;
3265
3266 if (info->snd_portid != data2->wmediumd)
3267 goto out;
3268
3269 /* look for the skb matching the cookie passed back from user */
3270 skb_queue_walk_safe(&data2->pending, skb, tmp) {
3271 u64 skb_cookie;
3272
3273 txi = IEEE80211_SKB_CB(skb);
3274 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3275
3276 if (skb_cookie == ret_skb_cookie) {
3277 skb_unlink(skb, &data2->pending);
3278 found = true;
3279 break;
3280 }
3281 }
3282
3283 /* not found */
3284 if (!found)
3285 goto out;
3286
3287 /* Tx info received because the frame was broadcasted on user space,
3288 so we get all the necessary info: tx attempts and skb control buff */
3289
3290 tx_attempts = (struct hwsim_tx_rate *)nla_data(
3291 info->attrs[HWSIM_ATTR_TX_INFO]);
3292
3293 /* now send back TX status */
3294 txi = IEEE80211_SKB_CB(skb);
3295
3296 ieee80211_tx_info_clear_status(txi);
3297
3298 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3299 txi->status.rates[i].idx = tx_attempts[i].idx;
3300 txi->status.rates[i].count = tx_attempts[i].count;
3301 }
3302
3303 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3304
3305 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3306 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3307 if (skb->len >= 16) {
3308 hdr = (struct ieee80211_hdr *) skb->data;
3309 mac80211_hwsim_monitor_ack(data2->channel,
3310 hdr->addr2);
3311 }
3312 txi->flags |= IEEE80211_TX_STAT_ACK;
3313 }
3314 ieee80211_tx_status_irqsafe(data2->hw, skb);
3315 return 0;
3316 out:
3317 return -EINVAL;
3318
3319 }
3320
hwsim_cloned_frame_received_nl(struct sk_buff * skb_2,struct genl_info * info)3321 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3322 struct genl_info *info)
3323 {
3324 struct mac80211_hwsim_data *data2;
3325 struct ieee80211_rx_status rx_status;
3326 struct ieee80211_hdr *hdr;
3327 const u8 *dst;
3328 int frame_data_len;
3329 void *frame_data;
3330 struct sk_buff *skb = NULL;
3331
3332 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3333 !info->attrs[HWSIM_ATTR_FRAME] ||
3334 !info->attrs[HWSIM_ATTR_RX_RATE] ||
3335 !info->attrs[HWSIM_ATTR_SIGNAL])
3336 goto out;
3337
3338 dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3339 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3340 frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3341
3342 /* Allocate new skb here */
3343 skb = alloc_skb(frame_data_len, GFP_KERNEL);
3344 if (skb == NULL)
3345 goto err;
3346
3347 if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3348 goto err;
3349
3350 /* Copy the data */
3351 skb_put_data(skb, frame_data, frame_data_len);
3352
3353 data2 = get_hwsim_data_ref_from_addr(dst);
3354 if (!data2)
3355 goto out;
3356
3357 if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3358 goto out;
3359
3360 if (info->snd_portid != data2->wmediumd)
3361 goto out;
3362
3363 /* check if radio is configured properly */
3364
3365 if (data2->idle || !data2->started)
3366 goto out;
3367
3368 /* A frame is received from user space */
3369 memset(&rx_status, 0, sizeof(rx_status));
3370 if (info->attrs[HWSIM_ATTR_FREQ]) {
3371 /* throw away off-channel packets, but allow both the temporary
3372 * ("hw" scan/remain-on-channel) and regular channel, since the
3373 * internal datapath also allows this
3374 */
3375 mutex_lock(&data2->mutex);
3376 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3377
3378 if (rx_status.freq != data2->channel->center_freq &&
3379 (!data2->tmp_chan ||
3380 rx_status.freq != data2->tmp_chan->center_freq)) {
3381 mutex_unlock(&data2->mutex);
3382 goto out;
3383 }
3384 mutex_unlock(&data2->mutex);
3385 } else {
3386 rx_status.freq = data2->channel->center_freq;
3387 }
3388
3389 rx_status.band = data2->channel->band;
3390 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3391 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3392
3393 hdr = (void *)skb->data;
3394
3395 if (ieee80211_is_beacon(hdr->frame_control) ||
3396 ieee80211_is_probe_resp(hdr->frame_control))
3397 rx_status.boottime_ns = ktime_get_boottime_ns();
3398
3399 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3400 data2->rx_pkts++;
3401 data2->rx_bytes += skb->len;
3402 ieee80211_rx_irqsafe(data2->hw, skb);
3403
3404 return 0;
3405 err:
3406 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3407 out:
3408 dev_kfree_skb(skb);
3409 return -EINVAL;
3410 }
3411
hwsim_register_received_nl(struct sk_buff * skb_2,struct genl_info * info)3412 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3413 struct genl_info *info)
3414 {
3415 struct net *net = genl_info_net(info);
3416 struct mac80211_hwsim_data *data;
3417 int chans = 1;
3418
3419 spin_lock_bh(&hwsim_radio_lock);
3420 list_for_each_entry(data, &hwsim_radios, list)
3421 chans = max(chans, data->channels);
3422 spin_unlock_bh(&hwsim_radio_lock);
3423
3424 /* In the future we should revise the userspace API and allow it
3425 * to set a flag that it does support multi-channel, then we can
3426 * let this pass conditionally on the flag.
3427 * For current userspace, prohibit it since it won't work right.
3428 */
3429 if (chans > 1)
3430 return -EOPNOTSUPP;
3431
3432 if (hwsim_net_get_wmediumd(net))
3433 return -EBUSY;
3434
3435 hwsim_register_wmediumd(net, info->snd_portid);
3436
3437 pr_debug("mac80211_hwsim: received a REGISTER, "
3438 "switching to wmediumd mode with pid %d\n", info->snd_portid);
3439
3440 return 0;
3441 }
3442
3443 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
hwsim_known_ciphers(const u32 * ciphers,int n_ciphers)3444 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3445 {
3446 int i;
3447
3448 for (i = 0; i < n_ciphers; i++) {
3449 int j;
3450 int found = 0;
3451
3452 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3453 if (ciphers[i] == hwsim_ciphers[j]) {
3454 found = 1;
3455 break;
3456 }
3457 }
3458
3459 if (!found)
3460 return false;
3461 }
3462
3463 return true;
3464 }
3465
hwsim_new_radio_nl(struct sk_buff * msg,struct genl_info * info)3466 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3467 {
3468 struct hwsim_new_radio_params param = { 0 };
3469 const char *hwname = NULL;
3470 int ret;
3471
3472 param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3473 param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3474 param.channels = channels;
3475 param.destroy_on_close =
3476 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3477
3478 if (info->attrs[HWSIM_ATTR_CHANNELS])
3479 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3480
3481 if (param.channels < 1) {
3482 GENL_SET_ERR_MSG(info, "must have at least one channel");
3483 return -EINVAL;
3484 }
3485
3486 if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3487 GENL_SET_ERR_MSG(info, "too many channels specified");
3488 return -EINVAL;
3489 }
3490
3491 if (info->attrs[HWSIM_ATTR_NO_VIF])
3492 param.no_vif = true;
3493
3494 if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3495 param.use_chanctx = true;
3496 else
3497 param.use_chanctx = (param.channels > 1);
3498
3499 if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3500 param.reg_alpha2 =
3501 nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3502
3503 if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3504 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3505
3506 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3507 return -EINVAL;
3508
3509 idx = array_index_nospec(idx,
3510 ARRAY_SIZE(hwsim_world_regdom_custom));
3511 param.regd = hwsim_world_regdom_custom[idx];
3512 }
3513
3514 if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3515 if (!is_valid_ether_addr(
3516 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3517 GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3518 NL_SET_BAD_ATTR(info->extack,
3519 info->attrs[HWSIM_ATTR_PERM_ADDR]);
3520 return -EINVAL;
3521 }
3522
3523 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3524 }
3525
3526 if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3527 param.iftypes =
3528 nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3529
3530 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3531 NL_SET_ERR_MSG_ATTR(info->extack,
3532 info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3533 "cannot support more iftypes than kernel");
3534 return -EINVAL;
3535 }
3536 } else {
3537 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3538 }
3539
3540 /* ensure both flag and iftype support is honored */
3541 if (param.p2p_device ||
3542 param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3543 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3544 param.p2p_device = true;
3545 }
3546
3547 if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3548 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3549
3550 param.ciphers =
3551 nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3552
3553 if (len % sizeof(u32)) {
3554 NL_SET_ERR_MSG_ATTR(info->extack,
3555 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3556 "bad cipher list length");
3557 return -EINVAL;
3558 }
3559
3560 param.n_ciphers = len / sizeof(u32);
3561
3562 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3563 NL_SET_ERR_MSG_ATTR(info->extack,
3564 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3565 "too many ciphers specified");
3566 return -EINVAL;
3567 }
3568
3569 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3570 NL_SET_ERR_MSG_ATTR(info->extack,
3571 info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3572 "unsupported ciphers specified");
3573 return -EINVAL;
3574 }
3575 }
3576
3577 if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3578 hwname = kasprintf(GFP_KERNEL, "%.*s",
3579 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3580 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3581 if (!hwname)
3582 return -ENOMEM;
3583 param.hwname = hwname;
3584 }
3585
3586 ret = mac80211_hwsim_new_radio(info, ¶m);
3587 kfree(hwname);
3588 return ret;
3589 }
3590
hwsim_del_radio_nl(struct sk_buff * msg,struct genl_info * info)3591 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3592 {
3593 struct mac80211_hwsim_data *data;
3594 s64 idx = -1;
3595 const char *hwname = NULL;
3596
3597 if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3598 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3599 } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3600 hwname = kasprintf(GFP_KERNEL, "%.*s",
3601 nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3602 (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3603 if (!hwname)
3604 return -ENOMEM;
3605 } else
3606 return -EINVAL;
3607
3608 spin_lock_bh(&hwsim_radio_lock);
3609 list_for_each_entry(data, &hwsim_radios, list) {
3610 if (idx >= 0) {
3611 if (data->idx != idx)
3612 continue;
3613 } else {
3614 if (!hwname ||
3615 strcmp(hwname, wiphy_name(data->hw->wiphy)))
3616 continue;
3617 }
3618
3619 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3620 continue;
3621
3622 list_del(&data->list);
3623 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3624 hwsim_rht_params);
3625 hwsim_radios_generation++;
3626 spin_unlock_bh(&hwsim_radio_lock);
3627 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3628 info);
3629 kfree(hwname);
3630 return 0;
3631 }
3632 spin_unlock_bh(&hwsim_radio_lock);
3633
3634 kfree(hwname);
3635 return -ENODEV;
3636 }
3637
hwsim_get_radio_nl(struct sk_buff * msg,struct genl_info * info)3638 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3639 {
3640 struct mac80211_hwsim_data *data;
3641 struct sk_buff *skb;
3642 int idx, res = -ENODEV;
3643
3644 if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3645 return -EINVAL;
3646 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3647
3648 spin_lock_bh(&hwsim_radio_lock);
3649 list_for_each_entry(data, &hwsim_radios, list) {
3650 if (data->idx != idx)
3651 continue;
3652
3653 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3654 continue;
3655
3656 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3657 if (!skb) {
3658 res = -ENOMEM;
3659 goto out_err;
3660 }
3661
3662 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3663 info->snd_seq, NULL, 0);
3664 if (res < 0) {
3665 nlmsg_free(skb);
3666 goto out_err;
3667 }
3668
3669 res = genlmsg_reply(skb, info);
3670 break;
3671 }
3672
3673 out_err:
3674 spin_unlock_bh(&hwsim_radio_lock);
3675
3676 return res;
3677 }
3678
hwsim_dump_radio_nl(struct sk_buff * skb,struct netlink_callback * cb)3679 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3680 struct netlink_callback *cb)
3681 {
3682 int last_idx = cb->args[0] - 1;
3683 struct mac80211_hwsim_data *data = NULL;
3684 int res = 0;
3685 void *hdr;
3686
3687 spin_lock_bh(&hwsim_radio_lock);
3688 cb->seq = hwsim_radios_generation;
3689
3690 if (last_idx >= hwsim_radio_idx-1)
3691 goto done;
3692
3693 list_for_each_entry(data, &hwsim_radios, list) {
3694 if (data->idx <= last_idx)
3695 continue;
3696
3697 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3698 continue;
3699
3700 res = mac80211_hwsim_get_radio(skb, data,
3701 NETLINK_CB(cb->skb).portid,
3702 cb->nlh->nlmsg_seq, cb,
3703 NLM_F_MULTI);
3704 if (res < 0)
3705 break;
3706
3707 last_idx = data->idx;
3708 }
3709
3710 cb->args[0] = last_idx + 1;
3711
3712 /* list changed, but no new element sent, set interrupted flag */
3713 if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3714 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3715 cb->nlh->nlmsg_seq, &hwsim_genl_family,
3716 NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3717 if (hdr) {
3718 genl_dump_check_consistent(cb, hdr);
3719 genlmsg_end(skb, hdr);
3720 } else {
3721 res = -EMSGSIZE;
3722 }
3723 }
3724
3725 done:
3726 spin_unlock_bh(&hwsim_radio_lock);
3727 return res ?: skb->len;
3728 }
3729
3730 /* Generic Netlink operations array */
3731 static const struct genl_ops hwsim_ops[] = {
3732 {
3733 .cmd = HWSIM_CMD_REGISTER,
3734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3735 .doit = hwsim_register_received_nl,
3736 .flags = GENL_UNS_ADMIN_PERM,
3737 },
3738 {
3739 .cmd = HWSIM_CMD_FRAME,
3740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3741 .doit = hwsim_cloned_frame_received_nl,
3742 },
3743 {
3744 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3745 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3746 .doit = hwsim_tx_info_frame_received_nl,
3747 },
3748 {
3749 .cmd = HWSIM_CMD_NEW_RADIO,
3750 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3751 .doit = hwsim_new_radio_nl,
3752 .flags = GENL_UNS_ADMIN_PERM,
3753 },
3754 {
3755 .cmd = HWSIM_CMD_DEL_RADIO,
3756 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3757 .doit = hwsim_del_radio_nl,
3758 .flags = GENL_UNS_ADMIN_PERM,
3759 },
3760 {
3761 .cmd = HWSIM_CMD_GET_RADIO,
3762 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
3763 .doit = hwsim_get_radio_nl,
3764 .dumpit = hwsim_dump_radio_nl,
3765 },
3766 };
3767
3768 static struct genl_family hwsim_genl_family __ro_after_init = {
3769 .name = "MAC80211_HWSIM",
3770 .version = 1,
3771 .maxattr = HWSIM_ATTR_MAX,
3772 .policy = hwsim_genl_policy,
3773 .netnsok = true,
3774 .module = THIS_MODULE,
3775 .ops = hwsim_ops,
3776 .n_ops = ARRAY_SIZE(hwsim_ops),
3777 .mcgrps = hwsim_mcgrps,
3778 .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3779 };
3780
remove_user_radios(u32 portid)3781 static void remove_user_radios(u32 portid)
3782 {
3783 struct mac80211_hwsim_data *entry, *tmp;
3784 LIST_HEAD(list);
3785
3786 spin_lock_bh(&hwsim_radio_lock);
3787 list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3788 if (entry->destroy_on_close && entry->portid == portid) {
3789 list_move(&entry->list, &list);
3790 rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3791 hwsim_rht_params);
3792 hwsim_radios_generation++;
3793 }
3794 }
3795 spin_unlock_bh(&hwsim_radio_lock);
3796
3797 list_for_each_entry_safe(entry, tmp, &list, list) {
3798 list_del(&entry->list);
3799 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3800 NULL);
3801 }
3802 }
3803
mac80211_hwsim_netlink_notify(struct notifier_block * nb,unsigned long state,void * _notify)3804 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3805 unsigned long state,
3806 void *_notify)
3807 {
3808 struct netlink_notify *notify = _notify;
3809
3810 if (state != NETLINK_URELEASE)
3811 return NOTIFY_DONE;
3812
3813 remove_user_radios(notify->portid);
3814
3815 if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3816 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3817 " socket, switching to perfect channel medium\n");
3818 hwsim_register_wmediumd(notify->net, 0);
3819 }
3820 return NOTIFY_DONE;
3821
3822 }
3823
3824 static struct notifier_block hwsim_netlink_notifier = {
3825 .notifier_call = mac80211_hwsim_netlink_notify,
3826 };
3827
hwsim_init_netlink(void)3828 static int __init hwsim_init_netlink(void)
3829 {
3830 int rc;
3831
3832 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3833
3834 rc = genl_register_family(&hwsim_genl_family);
3835 if (rc)
3836 goto failure;
3837
3838 rc = netlink_register_notifier(&hwsim_netlink_notifier);
3839 if (rc) {
3840 genl_unregister_family(&hwsim_genl_family);
3841 goto failure;
3842 }
3843
3844 return 0;
3845
3846 failure:
3847 pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3848 return -EINVAL;
3849 }
3850
hwsim_init_net(struct net * net)3851 static __net_init int hwsim_init_net(struct net *net)
3852 {
3853 return hwsim_net_set_netgroup(net);
3854 }
3855
hwsim_exit_net(struct net * net)3856 static void __net_exit hwsim_exit_net(struct net *net)
3857 {
3858 struct mac80211_hwsim_data *data, *tmp;
3859 LIST_HEAD(list);
3860
3861 spin_lock_bh(&hwsim_radio_lock);
3862 list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3863 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3864 continue;
3865
3866 /* Radios created in init_net are returned to init_net. */
3867 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3868 continue;
3869
3870 list_move(&data->list, &list);
3871 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3872 hwsim_rht_params);
3873 hwsim_radios_generation++;
3874 }
3875 spin_unlock_bh(&hwsim_radio_lock);
3876
3877 list_for_each_entry_safe(data, tmp, &list, list) {
3878 list_del(&data->list);
3879 mac80211_hwsim_del_radio(data,
3880 wiphy_name(data->hw->wiphy),
3881 NULL);
3882 }
3883
3884 ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3885 }
3886
3887 static struct pernet_operations hwsim_net_ops = {
3888 .init = hwsim_init_net,
3889 .exit = hwsim_exit_net,
3890 .id = &hwsim_net_id,
3891 .size = sizeof(struct hwsim_net),
3892 };
3893
hwsim_exit_netlink(void)3894 static void hwsim_exit_netlink(void)
3895 {
3896 /* unregister the notifier */
3897 netlink_unregister_notifier(&hwsim_netlink_notifier);
3898 /* unregister the family */
3899 genl_unregister_family(&hwsim_genl_family);
3900 }
3901
init_mac80211_hwsim(void)3902 static int __init init_mac80211_hwsim(void)
3903 {
3904 int i, err;
3905
3906 if (radios < 0 || radios > 100)
3907 return -EINVAL;
3908
3909 if (channels < 1)
3910 return -EINVAL;
3911
3912 spin_lock_init(&hwsim_radio_lock);
3913
3914 err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3915 if (err)
3916 return err;
3917
3918 err = register_pernet_device(&hwsim_net_ops);
3919 if (err)
3920 goto out_free_rht;
3921
3922 err = platform_driver_register(&mac80211_hwsim_driver);
3923 if (err)
3924 goto out_unregister_pernet;
3925
3926 err = hwsim_init_netlink();
3927 if (err)
3928 goto out_unregister_driver;
3929
3930 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3931 if (IS_ERR(hwsim_class)) {
3932 err = PTR_ERR(hwsim_class);
3933 goto out_exit_netlink;
3934 }
3935
3936 for (i = 0; i < radios; i++) {
3937 struct hwsim_new_radio_params param = { 0 };
3938
3939 param.channels = channels;
3940
3941 switch (regtest) {
3942 case HWSIM_REGTEST_DIFF_COUNTRY:
3943 if (i < ARRAY_SIZE(hwsim_alpha2s))
3944 param.reg_alpha2 = hwsim_alpha2s[i];
3945 break;
3946 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3947 if (!i)
3948 param.reg_alpha2 = hwsim_alpha2s[0];
3949 break;
3950 case HWSIM_REGTEST_STRICT_ALL:
3951 param.reg_strict = true;
3952 /* fall through */
3953 case HWSIM_REGTEST_DRIVER_REG_ALL:
3954 param.reg_alpha2 = hwsim_alpha2s[0];
3955 break;
3956 case HWSIM_REGTEST_WORLD_ROAM:
3957 if (i == 0)
3958 param.regd = &hwsim_world_regdom_custom_01;
3959 break;
3960 case HWSIM_REGTEST_CUSTOM_WORLD:
3961 param.regd = &hwsim_world_regdom_custom_01;
3962 break;
3963 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3964 if (i == 0)
3965 param.regd = &hwsim_world_regdom_custom_01;
3966 else if (i == 1)
3967 param.regd = &hwsim_world_regdom_custom_02;
3968 break;
3969 case HWSIM_REGTEST_STRICT_FOLLOW:
3970 if (i == 0) {
3971 param.reg_strict = true;
3972 param.reg_alpha2 = hwsim_alpha2s[0];
3973 }
3974 break;
3975 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3976 if (i == 0) {
3977 param.reg_strict = true;
3978 param.reg_alpha2 = hwsim_alpha2s[0];
3979 } else if (i == 1) {
3980 param.reg_alpha2 = hwsim_alpha2s[1];
3981 }
3982 break;
3983 case HWSIM_REGTEST_ALL:
3984 switch (i) {
3985 case 0:
3986 param.regd = &hwsim_world_regdom_custom_01;
3987 break;
3988 case 1:
3989 param.regd = &hwsim_world_regdom_custom_02;
3990 break;
3991 case 2:
3992 param.reg_alpha2 = hwsim_alpha2s[0];
3993 break;
3994 case 3:
3995 param.reg_alpha2 = hwsim_alpha2s[1];
3996 break;
3997 case 4:
3998 param.reg_strict = true;
3999 param.reg_alpha2 = hwsim_alpha2s[2];
4000 break;
4001 }
4002 break;
4003 default:
4004 break;
4005 }
4006
4007 param.p2p_device = support_p2p_device;
4008 param.use_chanctx = channels > 1;
4009 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
4010 if (param.p2p_device)
4011 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
4012
4013 err = mac80211_hwsim_new_radio(NULL, ¶m);
4014 if (err < 0)
4015 goto out_free_radios;
4016 }
4017
4018 hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
4019 hwsim_mon_setup);
4020 if (hwsim_mon == NULL) {
4021 err = -ENOMEM;
4022 goto out_free_radios;
4023 }
4024
4025 rtnl_lock();
4026 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
4027 if (err < 0) {
4028 rtnl_unlock();
4029 goto out_free_mon;
4030 }
4031
4032 err = register_netdevice(hwsim_mon);
4033 if (err < 0) {
4034 rtnl_unlock();
4035 goto out_free_mon;
4036 }
4037 rtnl_unlock();
4038
4039 return 0;
4040
4041 out_free_mon:
4042 free_netdev(hwsim_mon);
4043 out_free_radios:
4044 mac80211_hwsim_free();
4045 out_exit_netlink:
4046 hwsim_exit_netlink();
4047 out_unregister_driver:
4048 platform_driver_unregister(&mac80211_hwsim_driver);
4049 out_unregister_pernet:
4050 unregister_pernet_device(&hwsim_net_ops);
4051 out_free_rht:
4052 rhashtable_destroy(&hwsim_radios_rht);
4053 return err;
4054 }
4055 module_init(init_mac80211_hwsim);
4056
exit_mac80211_hwsim(void)4057 static void __exit exit_mac80211_hwsim(void)
4058 {
4059 pr_debug("mac80211_hwsim: unregister radios\n");
4060
4061 hwsim_exit_netlink();
4062
4063 mac80211_hwsim_free();
4064
4065 rhashtable_destroy(&hwsim_radios_rht);
4066 unregister_netdev(hwsim_mon);
4067 platform_driver_unregister(&mac80211_hwsim_driver);
4068 unregister_pernet_device(&hwsim_net_ops);
4069 }
4070 module_exit(exit_mac80211_hwsim);
4071