1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * mac80211 configuration hooks for cfg80211
4 *
5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
6 * Copyright 2013-2015 Intel Mobile Communications GmbH
7 * Copyright (C) 2015-2017 Intel Deutschland GmbH
8 * Copyright (C) 2018-2025 Intel Corporation
9 */
10
11 #include <linux/ieee80211.h>
12 #include <linux/nl80211.h>
13 #include <linux/rtnetlink.h>
14 #include <linux/slab.h>
15 #include <net/net_namespace.h>
16 #include <linux/rcupdate.h>
17 #include <linux/fips.h>
18 #include <linux/if_ether.h>
19 #include <net/cfg80211.h>
20 #include "ieee80211_i.h"
21 #include "driver-ops.h"
22 #include "rate.h"
23 #include "mesh.h"
24 #include "wme.h"
25
26 static struct ieee80211_link_data *
ieee80211_link_or_deflink(struct ieee80211_sub_if_data * sdata,int link_id,bool require_valid)27 ieee80211_link_or_deflink(struct ieee80211_sub_if_data *sdata, int link_id,
28 bool require_valid)
29 {
30 struct ieee80211_link_data *link;
31
32 if (link_id < 0) {
33 /*
34 * For keys, if sdata is not an MLD, we might not use
35 * the return value at all (if it's not a pairwise key),
36 * so in that case (require_valid==false) don't error.
37 */
38 if (require_valid && ieee80211_vif_is_mld(&sdata->vif))
39 return ERR_PTR(-EINVAL);
40
41 return &sdata->deflink;
42 }
43
44 link = sdata_dereference(sdata->link[link_id], sdata);
45 if (!link)
46 return ERR_PTR(-ENOLINK);
47 return link;
48 }
49
ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data * sdata,struct vif_params * params)50 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
51 struct vif_params *params)
52 {
53 bool mu_mimo_groups = false;
54 bool mu_mimo_follow = false;
55
56 if (params->vht_mumimo_groups) {
57 u64 membership;
58
59 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
60
61 memcpy(sdata->vif.bss_conf.mu_group.membership,
62 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
63 memcpy(sdata->vif.bss_conf.mu_group.position,
64 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
65 WLAN_USER_POSITION_LEN);
66 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
67 BSS_CHANGED_MU_GROUPS);
68 /* don't care about endianness - just check for 0 */
69 memcpy(&membership, params->vht_mumimo_groups,
70 WLAN_MEMBERSHIP_LEN);
71 mu_mimo_groups = membership != 0;
72 }
73
74 if (params->vht_mumimo_follow_addr) {
75 mu_mimo_follow =
76 is_valid_ether_addr(params->vht_mumimo_follow_addr);
77 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
78 params->vht_mumimo_follow_addr);
79 }
80
81 sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
82 }
83
ieee80211_set_mon_options(struct ieee80211_sub_if_data * sdata,struct vif_params * params)84 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
85 struct vif_params *params)
86 {
87 struct ieee80211_local *local = sdata->local;
88 struct ieee80211_sub_if_data *monitor_sdata;
89
90 /* check flags first */
91 if (params->flags && ieee80211_sdata_running(sdata)) {
92 u32 mask = MONITOR_FLAG_ACTIVE;
93
94 /*
95 * Prohibit MONITOR_FLAG_ACTIVE to be changed
96 * while the interface is up.
97 * Else we would need to add a lot of cruft
98 * to update everything:
99 * monitor and all fif_* counters
100 * reconfigure hardware
101 */
102 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
103 return -EBUSY;
104 }
105
106 /* also validate MU-MIMO change */
107 if (ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR))
108 monitor_sdata = sdata;
109 else
110 monitor_sdata = wiphy_dereference(local->hw.wiphy,
111 local->monitor_sdata);
112
113 if (!monitor_sdata &&
114 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
115 return -EOPNOTSUPP;
116
117 /* apply all changes now - no failures allowed */
118
119 if (monitor_sdata &&
120 (ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) ||
121 ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)))
122 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
123
124 if (params->flags) {
125 if (ieee80211_sdata_running(sdata)) {
126 ieee80211_adjust_monitor_flags(sdata, -1);
127 sdata->u.mntr.flags = params->flags;
128 ieee80211_adjust_monitor_flags(sdata, 1);
129
130 ieee80211_configure_filter(local);
131 } else {
132 /*
133 * Because the interface is down, ieee80211_do_stop
134 * and ieee80211_do_open take care of "everything"
135 * mentioned in the comment above.
136 */
137 sdata->u.mntr.flags = params->flags;
138 }
139 }
140
141 return 0;
142 }
143
ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data * sdata,struct cfg80211_mbssid_config * params,struct ieee80211_bss_conf * link_conf)144 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
145 struct cfg80211_mbssid_config *params,
146 struct ieee80211_bss_conf *link_conf)
147 {
148 struct ieee80211_sub_if_data *tx_sdata;
149 struct ieee80211_bss_conf *old;
150
151 link_conf->bssid_index = 0;
152 link_conf->nontransmitted = false;
153 link_conf->ema_ap = false;
154 link_conf->bssid_indicator = 0;
155
156 if (sdata->vif.type != NL80211_IFTYPE_AP || !params->tx_wdev)
157 return -EINVAL;
158
159 old = sdata_dereference(link_conf->tx_bss_conf, sdata);
160 if (old)
161 return -EALREADY;
162
163 tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params->tx_wdev);
164 if (!tx_sdata)
165 return -EINVAL;
166
167 if (tx_sdata == sdata) {
168 rcu_assign_pointer(link_conf->tx_bss_conf, link_conf);
169 } else {
170 struct ieee80211_bss_conf *tx_bss_conf;
171
172 tx_bss_conf = sdata_dereference(tx_sdata->vif.link_conf[params->tx_link_id],
173 sdata);
174 if (rcu_access_pointer(tx_bss_conf->tx_bss_conf) != tx_bss_conf)
175 return -EINVAL;
176
177 rcu_assign_pointer(link_conf->tx_bss_conf, tx_bss_conf);
178
179 link_conf->nontransmitted = true;
180 link_conf->bssid_index = params->index;
181 link_conf->bssid_indicator = tx_bss_conf->bssid_indicator;
182 }
183 if (params->ema)
184 link_conf->ema_ap = true;
185
186 return 0;
187 }
188
ieee80211_add_iface(struct wiphy * wiphy,const char * name,unsigned char name_assign_type,enum nl80211_iftype type,struct vif_params * params)189 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
190 const char *name,
191 unsigned char name_assign_type,
192 enum nl80211_iftype type,
193 struct vif_params *params)
194 {
195 struct ieee80211_local *local = wiphy_priv(wiphy);
196 struct wireless_dev *wdev;
197 struct ieee80211_sub_if_data *sdata;
198 int err;
199
200 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
201 if (err)
202 return ERR_PTR(err);
203
204 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
205
206 if (type == NL80211_IFTYPE_MONITOR) {
207 err = ieee80211_set_mon_options(sdata, params);
208 if (err) {
209 ieee80211_if_remove(sdata);
210 return NULL;
211 }
212 }
213
214 /* Let the driver know that an interface is going to be added.
215 * Indicate so only for interface types that will be added to the
216 * driver.
217 */
218 switch (type) {
219 case NL80211_IFTYPE_AP_VLAN:
220 break;
221 case NL80211_IFTYPE_MONITOR:
222 if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) ||
223 !(params->flags & MONITOR_FLAG_ACTIVE))
224 break;
225 fallthrough;
226 default:
227 drv_prep_add_interface(local,
228 ieee80211_vif_type_p2p(&sdata->vif));
229 break;
230 }
231
232 return wdev;
233 }
234
ieee80211_del_iface(struct wiphy * wiphy,struct wireless_dev * wdev)235 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
236 {
237 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
238
239 return 0;
240 }
241
ieee80211_change_iface(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)242 static int ieee80211_change_iface(struct wiphy *wiphy,
243 struct net_device *dev,
244 enum nl80211_iftype type,
245 struct vif_params *params)
246 {
247 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
248 struct ieee80211_local *local = sdata->local;
249 struct sta_info *sta;
250 int ret;
251
252 lockdep_assert_wiphy(local->hw.wiphy);
253
254 ret = ieee80211_if_change_type(sdata, type);
255 if (ret)
256 return ret;
257
258 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
259 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
260 ieee80211_check_fast_rx_iface(sdata);
261 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
262 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
263
264 if (params->use_4addr == ifmgd->use_4addr)
265 return 0;
266
267 /* FIXME: no support for 4-addr MLO yet */
268 if (ieee80211_vif_is_mld(&sdata->vif))
269 return -EOPNOTSUPP;
270
271 sdata->u.mgd.use_4addr = params->use_4addr;
272 if (!ifmgd->associated)
273 return 0;
274
275 sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
276 if (sta)
277 drv_sta_set_4addr(local, sdata, &sta->sta,
278 params->use_4addr);
279
280 if (params->use_4addr)
281 ieee80211_send_4addr_nullfunc(local, sdata);
282 }
283
284 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
285 ret = ieee80211_set_mon_options(sdata, params);
286 if (ret)
287 return ret;
288 }
289
290 return 0;
291 }
292
ieee80211_start_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)293 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
294 struct wireless_dev *wdev)
295 {
296 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
297 int ret;
298
299 lockdep_assert_wiphy(sdata->local->hw.wiphy);
300
301 ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1);
302 if (ret < 0)
303 return ret;
304
305 return ieee80211_do_open(wdev, true);
306 }
307
ieee80211_stop_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)308 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
309 struct wireless_dev *wdev)
310 {
311 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
312 }
313
ieee80211_start_nan(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf)314 static int ieee80211_start_nan(struct wiphy *wiphy,
315 struct wireless_dev *wdev,
316 struct cfg80211_nan_conf *conf)
317 {
318 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
319 int ret;
320
321 lockdep_assert_wiphy(sdata->local->hw.wiphy);
322
323 ret = ieee80211_check_combinations(sdata, NULL, 0, 0, -1);
324 if (ret < 0)
325 return ret;
326
327 ret = ieee80211_do_open(wdev, true);
328 if (ret)
329 return ret;
330
331 ret = drv_start_nan(sdata->local, sdata, conf);
332 if (ret)
333 ieee80211_sdata_stop(sdata);
334
335 sdata->u.nan.conf = *conf;
336
337 return ret;
338 }
339
ieee80211_stop_nan(struct wiphy * wiphy,struct wireless_dev * wdev)340 static void ieee80211_stop_nan(struct wiphy *wiphy,
341 struct wireless_dev *wdev)
342 {
343 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
344
345 drv_stop_nan(sdata->local, sdata);
346 ieee80211_sdata_stop(sdata);
347 }
348
ieee80211_nan_change_conf(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf,u32 changes)349 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
350 struct wireless_dev *wdev,
351 struct cfg80211_nan_conf *conf,
352 u32 changes)
353 {
354 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
355 struct cfg80211_nan_conf new_conf;
356 int ret = 0;
357
358 if (sdata->vif.type != NL80211_IFTYPE_NAN)
359 return -EOPNOTSUPP;
360
361 if (!ieee80211_sdata_running(sdata))
362 return -ENETDOWN;
363
364 new_conf = sdata->u.nan.conf;
365
366 if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
367 new_conf.master_pref = conf->master_pref;
368
369 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
370 new_conf.bands = conf->bands;
371
372 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
373 if (!ret)
374 sdata->u.nan.conf = new_conf;
375
376 return ret;
377 }
378
ieee80211_add_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_func * nan_func)379 static int ieee80211_add_nan_func(struct wiphy *wiphy,
380 struct wireless_dev *wdev,
381 struct cfg80211_nan_func *nan_func)
382 {
383 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
384 int ret;
385
386 if (sdata->vif.type != NL80211_IFTYPE_NAN)
387 return -EOPNOTSUPP;
388
389 if (!ieee80211_sdata_running(sdata))
390 return -ENETDOWN;
391
392 spin_lock_bh(&sdata->u.nan.func_lock);
393
394 ret = idr_alloc(&sdata->u.nan.function_inst_ids,
395 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
396 GFP_ATOMIC);
397 spin_unlock_bh(&sdata->u.nan.func_lock);
398
399 if (ret < 0)
400 return ret;
401
402 nan_func->instance_id = ret;
403
404 WARN_ON(nan_func->instance_id == 0);
405
406 ret = drv_add_nan_func(sdata->local, sdata, nan_func);
407 if (ret) {
408 spin_lock_bh(&sdata->u.nan.func_lock);
409 idr_remove(&sdata->u.nan.function_inst_ids,
410 nan_func->instance_id);
411 spin_unlock_bh(&sdata->u.nan.func_lock);
412 }
413
414 return ret;
415 }
416
417 static struct cfg80211_nan_func *
ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data * sdata,u64 cookie)418 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
419 u64 cookie)
420 {
421 struct cfg80211_nan_func *func;
422 int id;
423
424 lockdep_assert_held(&sdata->u.nan.func_lock);
425
426 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
427 if (func->cookie == cookie)
428 return func;
429 }
430
431 return NULL;
432 }
433
ieee80211_del_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,u64 cookie)434 static void ieee80211_del_nan_func(struct wiphy *wiphy,
435 struct wireless_dev *wdev, u64 cookie)
436 {
437 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
438 struct cfg80211_nan_func *func;
439 u8 instance_id = 0;
440
441 if (sdata->vif.type != NL80211_IFTYPE_NAN ||
442 !ieee80211_sdata_running(sdata))
443 return;
444
445 spin_lock_bh(&sdata->u.nan.func_lock);
446
447 func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
448 if (func)
449 instance_id = func->instance_id;
450
451 spin_unlock_bh(&sdata->u.nan.func_lock);
452
453 if (instance_id)
454 drv_del_nan_func(sdata->local, sdata, instance_id);
455 }
456
ieee80211_set_noack_map(struct wiphy * wiphy,struct net_device * dev,u16 noack_map)457 static int ieee80211_set_noack_map(struct wiphy *wiphy,
458 struct net_device *dev,
459 u16 noack_map)
460 {
461 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
462
463 sdata->noack_map = noack_map;
464
465 ieee80211_check_fast_xmit_iface(sdata);
466
467 return 0;
468 }
469
ieee80211_set_tx(struct ieee80211_sub_if_data * sdata,const u8 * mac_addr,u8 key_idx)470 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
471 const u8 *mac_addr, u8 key_idx)
472 {
473 struct ieee80211_local *local = sdata->local;
474 struct ieee80211_key *key;
475 struct sta_info *sta;
476 int ret = -EINVAL;
477
478 if (!wiphy_ext_feature_isset(local->hw.wiphy,
479 NL80211_EXT_FEATURE_EXT_KEY_ID))
480 return -EINVAL;
481
482 sta = sta_info_get_bss(sdata, mac_addr);
483
484 if (!sta)
485 return -EINVAL;
486
487 if (sta->ptk_idx == key_idx)
488 return 0;
489
490 key = wiphy_dereference(local->hw.wiphy, sta->ptk[key_idx]);
491
492 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
493 ret = ieee80211_set_tx_key(key);
494
495 return ret;
496 }
497
ieee80211_add_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr,struct key_params * params)498 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
499 int link_id, u8 key_idx, bool pairwise,
500 const u8 *mac_addr, struct key_params *params)
501 {
502 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
503 struct ieee80211_link_data *link =
504 ieee80211_link_or_deflink(sdata, link_id, false);
505 struct ieee80211_local *local = sdata->local;
506 struct sta_info *sta = NULL;
507 struct ieee80211_key *key;
508 int err;
509
510 lockdep_assert_wiphy(local->hw.wiphy);
511
512 if (!ieee80211_sdata_running(sdata))
513 return -ENETDOWN;
514
515 if (IS_ERR(link))
516 return PTR_ERR(link);
517
518 if (WARN_ON(pairwise && link_id >= 0))
519 return -EINVAL;
520
521 if (pairwise && params->mode == NL80211_KEY_SET_TX)
522 return ieee80211_set_tx(sdata, mac_addr, key_idx);
523
524 /* reject WEP and TKIP keys if WEP failed to initialize */
525 switch (params->cipher) {
526 case WLAN_CIPHER_SUITE_WEP40:
527 case WLAN_CIPHER_SUITE_TKIP:
528 case WLAN_CIPHER_SUITE_WEP104:
529 if (link_id >= 0)
530 return -EINVAL;
531 if (WARN_ON_ONCE(fips_enabled))
532 return -EINVAL;
533 break;
534 default:
535 break;
536 }
537
538 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
539 params->key, params->seq_len, params->seq);
540 if (IS_ERR(key))
541 return PTR_ERR(key);
542
543 if (pairwise) {
544 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
545 key->conf.link_id = -1;
546 } else {
547 key->conf.link_id = link->link_id;
548 }
549
550 if (params->mode == NL80211_KEY_NO_TX)
551 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
552
553 if (mac_addr) {
554 sta = sta_info_get_bss(sdata, mac_addr);
555 /*
556 * The ASSOC test makes sure the driver is ready to
557 * receive the key. When wpa_supplicant has roamed
558 * using FT, it attempts to set the key before
559 * association has completed, this rejects that attempt
560 * so it will set the key again after association.
561 *
562 * TODO: accept the key if we have a station entry and
563 * add it to the device after the station.
564 */
565 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
566 ieee80211_key_free_unused(key);
567 return -ENOENT;
568 }
569 }
570
571 switch (sdata->vif.type) {
572 case NL80211_IFTYPE_STATION:
573 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
574 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
575 break;
576 case NL80211_IFTYPE_AP:
577 case NL80211_IFTYPE_AP_VLAN:
578 /* Keys without a station are used for TX only */
579 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
580 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
581 break;
582 case NL80211_IFTYPE_ADHOC:
583 /* no MFP (yet) */
584 break;
585 case NL80211_IFTYPE_MESH_POINT:
586 #ifdef CONFIG_MAC80211_MESH
587 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
588 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
589 break;
590 #endif
591 case NL80211_IFTYPE_WDS:
592 case NL80211_IFTYPE_MONITOR:
593 case NL80211_IFTYPE_P2P_DEVICE:
594 case NL80211_IFTYPE_NAN:
595 case NL80211_IFTYPE_UNSPECIFIED:
596 case NUM_NL80211_IFTYPES:
597 case NL80211_IFTYPE_P2P_CLIENT:
598 case NL80211_IFTYPE_P2P_GO:
599 case NL80211_IFTYPE_OCB:
600 /* shouldn't happen */
601 WARN_ON_ONCE(1);
602 break;
603 }
604
605 err = ieee80211_key_link(key, link, sta);
606 /* KRACK protection, shouldn't happen but just silently accept key */
607 if (err == -EALREADY)
608 err = 0;
609
610 return err;
611 }
612
613 static struct ieee80211_key *
ieee80211_lookup_key(struct ieee80211_sub_if_data * sdata,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr)614 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
615 u8 key_idx, bool pairwise, const u8 *mac_addr)
616 {
617 struct ieee80211_local *local __maybe_unused = sdata->local;
618 struct ieee80211_link_data *link = &sdata->deflink;
619 struct ieee80211_key *key;
620
621 if (link_id >= 0) {
622 link = sdata_dereference(sdata->link[link_id], sdata);
623 if (!link)
624 return NULL;
625 }
626
627 if (mac_addr) {
628 struct sta_info *sta;
629 struct link_sta_info *link_sta;
630
631 sta = sta_info_get_bss(sdata, mac_addr);
632 if (!sta)
633 return NULL;
634
635 if (link_id >= 0) {
636 link_sta = rcu_dereference_check(sta->link[link_id],
637 lockdep_is_held(&local->hw.wiphy->mtx));
638 if (!link_sta)
639 return NULL;
640 } else {
641 link_sta = &sta->deflink;
642 }
643
644 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
645 return wiphy_dereference(local->hw.wiphy,
646 sta->ptk[key_idx]);
647
648 if (!pairwise &&
649 key_idx < NUM_DEFAULT_KEYS +
650 NUM_DEFAULT_MGMT_KEYS +
651 NUM_DEFAULT_BEACON_KEYS)
652 return wiphy_dereference(local->hw.wiphy,
653 link_sta->gtk[key_idx]);
654
655 return NULL;
656 }
657
658 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
659 return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]);
660
661 key = wiphy_dereference(local->hw.wiphy, link->gtk[key_idx]);
662 if (key)
663 return key;
664
665 /* or maybe it was a WEP key */
666 if (key_idx < NUM_DEFAULT_KEYS)
667 return wiphy_dereference(local->hw.wiphy, sdata->keys[key_idx]);
668
669 return NULL;
670 }
671
ieee80211_del_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr)672 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
673 int link_id, u8 key_idx, bool pairwise,
674 const u8 *mac_addr)
675 {
676 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
677 struct ieee80211_local *local = sdata->local;
678 struct ieee80211_key *key;
679
680 lockdep_assert_wiphy(local->hw.wiphy);
681
682 key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
683 if (!key)
684 return -ENOENT;
685
686 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
687
688 return 0;
689 }
690
ieee80211_get_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr,void * cookie,void (* callback)(void * cookie,struct key_params * params))691 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
692 int link_id, u8 key_idx, bool pairwise,
693 const u8 *mac_addr, void *cookie,
694 void (*callback)(void *cookie,
695 struct key_params *params))
696 {
697 struct ieee80211_sub_if_data *sdata;
698 u8 seq[6] = {0};
699 struct key_params params;
700 struct ieee80211_key *key;
701 u64 pn64;
702 u32 iv32;
703 u16 iv16;
704 int err = -ENOENT;
705 struct ieee80211_key_seq kseq = {};
706
707 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
708
709 rcu_read_lock();
710
711 key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
712 if (!key)
713 goto out;
714
715 memset(¶ms, 0, sizeof(params));
716
717 params.cipher = key->conf.cipher;
718
719 switch (key->conf.cipher) {
720 case WLAN_CIPHER_SUITE_TKIP:
721 pn64 = atomic64_read(&key->conf.tx_pn);
722 iv32 = TKIP_PN_TO_IV32(pn64);
723 iv16 = TKIP_PN_TO_IV16(pn64);
724
725 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
726 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
727 drv_get_key_seq(sdata->local, key, &kseq);
728 iv32 = kseq.tkip.iv32;
729 iv16 = kseq.tkip.iv16;
730 }
731
732 seq[0] = iv16 & 0xff;
733 seq[1] = (iv16 >> 8) & 0xff;
734 seq[2] = iv32 & 0xff;
735 seq[3] = (iv32 >> 8) & 0xff;
736 seq[4] = (iv32 >> 16) & 0xff;
737 seq[5] = (iv32 >> 24) & 0xff;
738 params.seq = seq;
739 params.seq_len = 6;
740 break;
741 case WLAN_CIPHER_SUITE_CCMP:
742 case WLAN_CIPHER_SUITE_CCMP_256:
743 case WLAN_CIPHER_SUITE_AES_CMAC:
744 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
745 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
746 offsetof(typeof(kseq), aes_cmac));
747 fallthrough;
748 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
749 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
750 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
751 offsetof(typeof(kseq), aes_gmac));
752 fallthrough;
753 case WLAN_CIPHER_SUITE_GCMP:
754 case WLAN_CIPHER_SUITE_GCMP_256:
755 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
756 offsetof(typeof(kseq), gcmp));
757
758 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
759 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
760 drv_get_key_seq(sdata->local, key, &kseq);
761 memcpy(seq, kseq.ccmp.pn, 6);
762 } else {
763 pn64 = atomic64_read(&key->conf.tx_pn);
764 seq[0] = pn64;
765 seq[1] = pn64 >> 8;
766 seq[2] = pn64 >> 16;
767 seq[3] = pn64 >> 24;
768 seq[4] = pn64 >> 32;
769 seq[5] = pn64 >> 40;
770 }
771 params.seq = seq;
772 params.seq_len = 6;
773 break;
774 default:
775 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
776 break;
777 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
778 break;
779 drv_get_key_seq(sdata->local, key, &kseq);
780 params.seq = kseq.hw.seq;
781 params.seq_len = kseq.hw.seq_len;
782 break;
783 }
784
785 callback(cookie, ¶ms);
786 err = 0;
787
788 out:
789 rcu_read_unlock();
790 return err;
791 }
792
ieee80211_config_default_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool uni,bool multi)793 static int ieee80211_config_default_key(struct wiphy *wiphy,
794 struct net_device *dev,
795 int link_id, u8 key_idx, bool uni,
796 bool multi)
797 {
798 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
799 struct ieee80211_link_data *link =
800 ieee80211_link_or_deflink(sdata, link_id, false);
801
802 if (IS_ERR(link))
803 return PTR_ERR(link);
804
805 ieee80211_set_default_key(link, key_idx, uni, multi);
806
807 return 0;
808 }
809
ieee80211_config_default_mgmt_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)810 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
811 struct net_device *dev,
812 int link_id, u8 key_idx)
813 {
814 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
815 struct ieee80211_link_data *link =
816 ieee80211_link_or_deflink(sdata, link_id, true);
817
818 if (IS_ERR(link))
819 return PTR_ERR(link);
820
821 ieee80211_set_default_mgmt_key(link, key_idx);
822
823 return 0;
824 }
825
ieee80211_config_default_beacon_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)826 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
827 struct net_device *dev,
828 int link_id, u8 key_idx)
829 {
830 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
831 struct ieee80211_link_data *link =
832 ieee80211_link_or_deflink(sdata, link_id, true);
833
834 if (IS_ERR(link))
835 return PTR_ERR(link);
836
837 ieee80211_set_default_beacon_key(link, key_idx);
838
839 return 0;
840 }
841
sta_set_rate_info_tx(struct sta_info * sta,const struct ieee80211_tx_rate * rate,struct rate_info * rinfo)842 void sta_set_rate_info_tx(struct sta_info *sta,
843 const struct ieee80211_tx_rate *rate,
844 struct rate_info *rinfo)
845 {
846 rinfo->flags = 0;
847 if (rate->flags & IEEE80211_TX_RC_MCS) {
848 rinfo->flags |= RATE_INFO_FLAGS_MCS;
849 rinfo->mcs = rate->idx;
850 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
851 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
852 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
853 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
854 } else {
855 struct ieee80211_supported_band *sband;
856
857 sband = ieee80211_get_sband(sta->sdata);
858 WARN_ON_ONCE(sband && !sband->bitrates);
859 if (sband && sband->bitrates)
860 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
861 }
862 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
863 rinfo->bw = RATE_INFO_BW_40;
864 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
865 rinfo->bw = RATE_INFO_BW_80;
866 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
867 rinfo->bw = RATE_INFO_BW_160;
868 else
869 rinfo->bw = RATE_INFO_BW_20;
870 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
871 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
872 }
873
ieee80211_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)874 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
875 int idx, u8 *mac, struct station_info *sinfo)
876 {
877 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
878 struct ieee80211_local *local = sdata->local;
879 struct sta_info *sta;
880 int ret = -ENOENT;
881
882 lockdep_assert_wiphy(local->hw.wiphy);
883
884 sta = sta_info_get_by_idx(sdata, idx);
885 if (sta) {
886 ret = 0;
887 memcpy(mac, sta->sta.addr, ETH_ALEN);
888 sta_set_sinfo(sta, sinfo, true);
889
890 /* Add accumulated removed link data to sinfo data for
891 * consistency for MLO
892 */
893 if (sinfo->valid_links)
894 sta_set_accumulated_removed_links_sinfo(sta, sinfo);
895
896 }
897
898 return ret;
899 }
900
ieee80211_dump_survey(struct wiphy * wiphy,struct net_device * dev,int idx,struct survey_info * survey)901 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
902 int idx, struct survey_info *survey)
903 {
904 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
905
906 return drv_get_survey(local, idx, survey);
907 }
908
ieee80211_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)909 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
910 const u8 *mac, struct station_info *sinfo)
911 {
912 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
913 struct ieee80211_local *local = sdata->local;
914 struct sta_info *sta;
915 int ret = -ENOENT;
916
917 lockdep_assert_wiphy(local->hw.wiphy);
918
919 sta = sta_info_get_bss(sdata, mac);
920 if (sta) {
921 ret = 0;
922 sta_set_sinfo(sta, sinfo, true);
923
924 /* Add accumulated removed link data to sinfo data for
925 * consistency for MLO
926 */
927 if (sinfo->valid_links)
928 sta_set_accumulated_removed_links_sinfo(sta, sinfo);
929 }
930
931 return ret;
932 }
933
ieee80211_set_monitor_channel(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef)934 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
935 struct net_device *dev,
936 struct cfg80211_chan_def *chandef)
937 {
938 struct ieee80211_local *local = wiphy_priv(wiphy);
939 struct ieee80211_sub_if_data *sdata;
940 struct ieee80211_chan_req chanreq = { .oper = *chandef };
941 int ret;
942
943 lockdep_assert_wiphy(local->hw.wiphy);
944
945 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
946 if (!ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) {
947 if (cfg80211_chandef_identical(&local->monitor_chanreq.oper,
948 &chanreq.oper))
949 return 0;
950
951 sdata = wiphy_dereference(wiphy, local->monitor_sdata);
952 if (!sdata)
953 goto done;
954 }
955
956 if (rcu_access_pointer(sdata->deflink.conf->chanctx_conf) &&
957 cfg80211_chandef_identical(&sdata->vif.bss_conf.chanreq.oper,
958 &chanreq.oper))
959 return 0;
960
961 ieee80211_link_release_channel(&sdata->deflink);
962 ret = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
963 IEEE80211_CHANCTX_SHARED);
964 if (ret)
965 return ret;
966 done:
967 local->monitor_chanreq = chanreq;
968 return 0;
969 }
970
971 static int
ieee80211_set_probe_resp(struct ieee80211_sub_if_data * sdata,const u8 * resp,size_t resp_len,const struct ieee80211_csa_settings * csa,const struct ieee80211_color_change_settings * cca,struct ieee80211_link_data * link)972 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
973 const u8 *resp, size_t resp_len,
974 const struct ieee80211_csa_settings *csa,
975 const struct ieee80211_color_change_settings *cca,
976 struct ieee80211_link_data *link)
977 {
978 struct probe_resp *new, *old;
979
980 if (!resp || !resp_len)
981 return 1;
982
983 old = sdata_dereference(link->u.ap.probe_resp, sdata);
984
985 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
986 if (!new)
987 return -ENOMEM;
988
989 new->len = resp_len;
990 memcpy(new->data, resp, resp_len);
991
992 if (csa)
993 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
994 csa->n_counter_offsets_presp *
995 sizeof(new->cntdwn_counter_offsets[0]));
996 else if (cca)
997 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
998
999 rcu_assign_pointer(link->u.ap.probe_resp, new);
1000 if (old)
1001 kfree_rcu(old, rcu_head);
1002
1003 return 0;
1004 }
1005
ieee80211_set_fils_discovery(struct ieee80211_sub_if_data * sdata,struct cfg80211_fils_discovery * params,struct ieee80211_link_data * link,struct ieee80211_bss_conf * link_conf,u64 * changed)1006 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
1007 struct cfg80211_fils_discovery *params,
1008 struct ieee80211_link_data *link,
1009 struct ieee80211_bss_conf *link_conf,
1010 u64 *changed)
1011 {
1012 struct fils_discovery_data *new, *old = NULL;
1013 struct ieee80211_fils_discovery *fd;
1014
1015 if (!params->update)
1016 return 0;
1017
1018 fd = &link_conf->fils_discovery;
1019 fd->min_interval = params->min_interval;
1020 fd->max_interval = params->max_interval;
1021
1022 old = sdata_dereference(link->u.ap.fils_discovery, sdata);
1023 if (old)
1024 kfree_rcu(old, rcu_head);
1025
1026 if (params->tmpl && params->tmpl_len) {
1027 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1028 if (!new)
1029 return -ENOMEM;
1030 new->len = params->tmpl_len;
1031 memcpy(new->data, params->tmpl, params->tmpl_len);
1032 rcu_assign_pointer(link->u.ap.fils_discovery, new);
1033 } else {
1034 RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1035 }
1036
1037 *changed |= BSS_CHANGED_FILS_DISCOVERY;
1038 return 0;
1039 }
1040
1041 static int
ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data * sdata,struct cfg80211_unsol_bcast_probe_resp * params,struct ieee80211_link_data * link,struct ieee80211_bss_conf * link_conf,u64 * changed)1042 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
1043 struct cfg80211_unsol_bcast_probe_resp *params,
1044 struct ieee80211_link_data *link,
1045 struct ieee80211_bss_conf *link_conf,
1046 u64 *changed)
1047 {
1048 struct unsol_bcast_probe_resp_data *new, *old = NULL;
1049
1050 if (!params->update)
1051 return 0;
1052
1053 link_conf->unsol_bcast_probe_resp_interval = params->interval;
1054
1055 old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1056 if (old)
1057 kfree_rcu(old, rcu_head);
1058
1059 if (params->tmpl && params->tmpl_len) {
1060 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1061 if (!new)
1062 return -ENOMEM;
1063 new->len = params->tmpl_len;
1064 memcpy(new->data, params->tmpl, params->tmpl_len);
1065 rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1066 } else {
1067 RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1068 }
1069
1070 *changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1071 return 0;
1072 }
1073
1074 static int
ieee80211_set_s1g_short_beacon(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,struct cfg80211_s1g_short_beacon * params)1075 ieee80211_set_s1g_short_beacon(struct ieee80211_sub_if_data *sdata,
1076 struct ieee80211_link_data *link,
1077 struct cfg80211_s1g_short_beacon *params)
1078 {
1079 struct s1g_short_beacon_data *new;
1080 struct s1g_short_beacon_data *old =
1081 sdata_dereference(link->u.ap.s1g_short_beacon, sdata);
1082 size_t new_len =
1083 sizeof(*new) + params->short_head_len + params->short_tail_len;
1084
1085 if (!params->update)
1086 return 0;
1087
1088 if (!params->short_head)
1089 return -EINVAL;
1090
1091 new = kzalloc(new_len, GFP_KERNEL);
1092 if (!new)
1093 return -ENOMEM;
1094
1095 /* Memory layout: | struct | head | tail | */
1096 new->short_head = (u8 *)new + sizeof(*new);
1097 new->short_head_len = params->short_head_len;
1098 memcpy(new->short_head, params->short_head, params->short_head_len);
1099
1100 if (params->short_tail) {
1101 new->short_tail = new->short_head + params->short_head_len;
1102 new->short_tail_len = params->short_tail_len;
1103 memcpy(new->short_tail, params->short_tail,
1104 params->short_tail_len);
1105 }
1106
1107 rcu_assign_pointer(link->u.ap.s1g_short_beacon, new);
1108
1109 if (old)
1110 kfree_rcu(old, rcu_head);
1111
1112 return 0;
1113 }
1114
ieee80211_set_ftm_responder_params(struct ieee80211_sub_if_data * sdata,const u8 * lci,size_t lci_len,const u8 * civicloc,size_t civicloc_len,struct ieee80211_bss_conf * link_conf)1115 static int ieee80211_set_ftm_responder_params(
1116 struct ieee80211_sub_if_data *sdata,
1117 const u8 *lci, size_t lci_len,
1118 const u8 *civicloc, size_t civicloc_len,
1119 struct ieee80211_bss_conf *link_conf)
1120 {
1121 struct ieee80211_ftm_responder_params *new, *old;
1122 u8 *pos;
1123 int len;
1124
1125 if (!lci_len && !civicloc_len)
1126 return 0;
1127
1128 old = link_conf->ftmr_params;
1129 len = lci_len + civicloc_len;
1130
1131 new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1132 if (!new)
1133 return -ENOMEM;
1134
1135 pos = (u8 *)(new + 1);
1136 if (lci_len) {
1137 new->lci_len = lci_len;
1138 new->lci = pos;
1139 memcpy(pos, lci, lci_len);
1140 pos += lci_len;
1141 }
1142
1143 if (civicloc_len) {
1144 new->civicloc_len = civicloc_len;
1145 new->civicloc = pos;
1146 memcpy(pos, civicloc, civicloc_len);
1147 pos += civicloc_len;
1148 }
1149
1150 link_conf->ftmr_params = new;
1151 kfree(old);
1152
1153 return 0;
1154 }
1155
1156 static int
ieee80211_copy_mbssid_beacon(u8 * pos,struct cfg80211_mbssid_elems * dst,struct cfg80211_mbssid_elems * src)1157 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1158 struct cfg80211_mbssid_elems *src)
1159 {
1160 int i, offset = 0;
1161
1162 dst->cnt = src->cnt;
1163 for (i = 0; i < src->cnt; i++) {
1164 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1165 dst->elem[i].len = src->elem[i].len;
1166 dst->elem[i].data = pos + offset;
1167 offset += dst->elem[i].len;
1168 }
1169
1170 return offset;
1171 }
1172
1173 static int
ieee80211_copy_rnr_beacon(u8 * pos,struct cfg80211_rnr_elems * dst,struct cfg80211_rnr_elems * src)1174 ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst,
1175 struct cfg80211_rnr_elems *src)
1176 {
1177 int i, offset = 0;
1178
1179 dst->cnt = src->cnt;
1180 for (i = 0; i < src->cnt; i++) {
1181 memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1182 dst->elem[i].len = src->elem[i].len;
1183 dst->elem[i].data = pos + offset;
1184 offset += dst->elem[i].len;
1185 }
1186
1187 return offset;
1188 }
1189
1190 static int
ieee80211_assign_beacon(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,struct cfg80211_beacon_data * params,const struct ieee80211_csa_settings * csa,const struct ieee80211_color_change_settings * cca,u64 * changed)1191 ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1192 struct ieee80211_link_data *link,
1193 struct cfg80211_beacon_data *params,
1194 const struct ieee80211_csa_settings *csa,
1195 const struct ieee80211_color_change_settings *cca,
1196 u64 *changed)
1197 {
1198 struct cfg80211_mbssid_elems *mbssid = NULL;
1199 struct cfg80211_rnr_elems *rnr = NULL;
1200 struct beacon_data *new, *old;
1201 int new_head_len, new_tail_len;
1202 int size, err;
1203 u64 _changed = BSS_CHANGED_BEACON;
1204 struct ieee80211_bss_conf *link_conf = link->conf;
1205
1206 old = sdata_dereference(link->u.ap.beacon, sdata);
1207
1208 /* Need to have a beacon head if we don't have one yet */
1209 if (!params->head && !old)
1210 return -EINVAL;
1211
1212 /* new or old head? */
1213 if (params->head)
1214 new_head_len = params->head_len;
1215 else
1216 new_head_len = old->head_len;
1217
1218 /* new or old tail? */
1219 if (params->tail || !old)
1220 /* params->tail_len will be zero for !params->tail */
1221 new_tail_len = params->tail_len;
1222 else
1223 new_tail_len = old->tail_len;
1224
1225 size = sizeof(*new) + new_head_len + new_tail_len;
1226
1227 /* new or old multiple BSSID elements? */
1228 if (params->mbssid_ies) {
1229 mbssid = params->mbssid_ies;
1230 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1231 if (params->rnr_ies) {
1232 rnr = params->rnr_ies;
1233 size += struct_size(new->rnr_ies, elem, rnr->cnt);
1234 }
1235 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1236 mbssid->cnt);
1237 } else if (old && old->mbssid_ies) {
1238 mbssid = old->mbssid_ies;
1239 size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1240 if (old && old->rnr_ies) {
1241 rnr = old->rnr_ies;
1242 size += struct_size(new->rnr_ies, elem, rnr->cnt);
1243 }
1244 size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1245 mbssid->cnt);
1246 }
1247
1248 new = kzalloc(size, GFP_KERNEL);
1249 if (!new)
1250 return -ENOMEM;
1251
1252 /* start filling the new info now */
1253
1254 /*
1255 * pointers go into the block we allocated,
1256 * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies
1257 */
1258 new->head = ((u8 *) new) + sizeof(*new);
1259 new->tail = new->head + new_head_len;
1260 new->head_len = new_head_len;
1261 new->tail_len = new_tail_len;
1262 /* copy in optional mbssid_ies */
1263 if (mbssid) {
1264 u8 *pos = new->tail + new->tail_len;
1265
1266 new->mbssid_ies = (void *)pos;
1267 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1268 pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies,
1269 mbssid);
1270 if (rnr) {
1271 new->rnr_ies = (void *)pos;
1272 pos += struct_size(new->rnr_ies, elem, rnr->cnt);
1273 ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr);
1274 }
1275 /* update bssid_indicator */
1276 if (new->mbssid_ies->cnt && new->mbssid_ies->elem[0].len > 2)
1277 link_conf->bssid_indicator =
1278 *(new->mbssid_ies->elem[0].data + 2);
1279 else
1280 link_conf->bssid_indicator = 0;
1281 }
1282
1283 if (csa) {
1284 new->cntdwn_current_counter = csa->count;
1285 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1286 csa->n_counter_offsets_beacon *
1287 sizeof(new->cntdwn_counter_offsets[0]));
1288 } else if (cca) {
1289 new->cntdwn_current_counter = cca->count;
1290 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1291 }
1292
1293 /* copy in head */
1294 if (params->head)
1295 memcpy(new->head, params->head, new_head_len);
1296 else
1297 memcpy(new->head, old->head, new_head_len);
1298
1299 /* copy in optional tail */
1300 if (params->tail)
1301 memcpy(new->tail, params->tail, new_tail_len);
1302 else
1303 if (old)
1304 memcpy(new->tail, old->tail, new_tail_len);
1305
1306 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1307 params->probe_resp_len, csa, cca, link);
1308 if (err < 0) {
1309 kfree(new);
1310 return err;
1311 }
1312 if (err == 0)
1313 _changed |= BSS_CHANGED_AP_PROBE_RESP;
1314
1315 if (params->ftm_responder != -1) {
1316 link_conf->ftm_responder = params->ftm_responder;
1317 err = ieee80211_set_ftm_responder_params(sdata,
1318 params->lci,
1319 params->lci_len,
1320 params->civicloc,
1321 params->civicloc_len,
1322 link_conf);
1323
1324 if (err < 0) {
1325 kfree(new);
1326 return err;
1327 }
1328
1329 _changed |= BSS_CHANGED_FTM_RESPONDER;
1330 }
1331
1332 rcu_assign_pointer(link->u.ap.beacon, new);
1333 sdata->u.ap.active = true;
1334
1335 if (old)
1336 kfree_rcu(old, rcu_head);
1337
1338 *changed |= _changed;
1339 return 0;
1340 }
1341
ieee80211_num_beaconing_links(struct ieee80211_sub_if_data * sdata)1342 static u8 ieee80211_num_beaconing_links(struct ieee80211_sub_if_data *sdata)
1343 {
1344 struct ieee80211_link_data *link;
1345 u8 link_id, num = 0;
1346
1347 if (sdata->vif.type != NL80211_IFTYPE_AP &&
1348 sdata->vif.type != NL80211_IFTYPE_P2P_GO)
1349 return num;
1350
1351 /* non-MLO mode of operation also uses link_id 0 in sdata so it is
1352 * safe to directly proceed with the below loop
1353 */
1354 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
1355 link = sdata_dereference(sdata->link[link_id], sdata);
1356 if (!link)
1357 continue;
1358
1359 if (sdata_dereference(link->u.ap.beacon, sdata))
1360 num++;
1361 }
1362
1363 return num;
1364 }
1365
ieee80211_start_ap(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ap_settings * params)1366 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1367 struct cfg80211_ap_settings *params)
1368 {
1369 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1370 struct ieee80211_local *local = sdata->local;
1371 struct beacon_data *old;
1372 struct ieee80211_sub_if_data *vlan;
1373 u64 changed = BSS_CHANGED_BEACON_INT |
1374 BSS_CHANGED_BEACON_ENABLED |
1375 BSS_CHANGED_BEACON |
1376 BSS_CHANGED_P2P_PS |
1377 BSS_CHANGED_TXPOWER |
1378 BSS_CHANGED_TWT;
1379 int i, err;
1380 int prev_beacon_int;
1381 unsigned int link_id = params->beacon.link_id;
1382 struct ieee80211_link_data *link;
1383 struct ieee80211_bss_conf *link_conf;
1384 struct ieee80211_chan_req chanreq = { .oper = params->chandef };
1385 u64 tsf;
1386
1387 lockdep_assert_wiphy(local->hw.wiphy);
1388
1389 link = sdata_dereference(sdata->link[link_id], sdata);
1390 if (!link)
1391 return -ENOLINK;
1392
1393 link_conf = link->conf;
1394
1395 old = sdata_dereference(link->u.ap.beacon, sdata);
1396 if (old)
1397 return -EALREADY;
1398
1399 link->smps_mode = IEEE80211_SMPS_OFF;
1400
1401 link->needed_rx_chains = sdata->local->rx_chains;
1402
1403 prev_beacon_int = link_conf->beacon_int;
1404 link_conf->beacon_int = params->beacon_interval;
1405
1406 if (params->ht_cap)
1407 link_conf->ht_ldpc =
1408 params->ht_cap->cap_info &
1409 cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING);
1410
1411 if (params->vht_cap) {
1412 link_conf->vht_ldpc =
1413 params->vht_cap->vht_cap_info &
1414 cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC);
1415 link_conf->vht_su_beamformer =
1416 params->vht_cap->vht_cap_info &
1417 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
1418 link_conf->vht_su_beamformee =
1419 params->vht_cap->vht_cap_info &
1420 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
1421 link_conf->vht_mu_beamformer =
1422 params->vht_cap->vht_cap_info &
1423 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
1424 link_conf->vht_mu_beamformee =
1425 params->vht_cap->vht_cap_info &
1426 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
1427 }
1428
1429 if (params->he_cap && params->he_oper) {
1430 link_conf->he_support = true;
1431 link_conf->htc_trig_based_pkt_ext =
1432 le32_get_bits(params->he_oper->he_oper_params,
1433 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1434 link_conf->frame_time_rts_th =
1435 le32_get_bits(params->he_oper->he_oper_params,
1436 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1437 changed |= BSS_CHANGED_HE_OBSS_PD;
1438
1439 if (params->beacon.he_bss_color.enabled)
1440 changed |= BSS_CHANGED_HE_BSS_COLOR;
1441 }
1442
1443 if (params->he_cap) {
1444 link_conf->he_ldpc =
1445 params->he_cap->phy_cap_info[1] &
1446 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD;
1447 link_conf->he_su_beamformer =
1448 params->he_cap->phy_cap_info[3] &
1449 IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER;
1450 link_conf->he_su_beamformee =
1451 params->he_cap->phy_cap_info[4] &
1452 IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE;
1453 link_conf->he_mu_beamformer =
1454 params->he_cap->phy_cap_info[4] &
1455 IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
1456 link_conf->he_full_ul_mumimo =
1457 params->he_cap->phy_cap_info[2] &
1458 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO;
1459 }
1460
1461 if (params->eht_cap) {
1462 if (!link_conf->he_support)
1463 return -EOPNOTSUPP;
1464
1465 link_conf->eht_support = true;
1466
1467 link_conf->eht_su_beamformer =
1468 params->eht_cap->fixed.phy_cap_info[0] &
1469 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER;
1470 link_conf->eht_su_beamformee =
1471 params->eht_cap->fixed.phy_cap_info[0] &
1472 IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
1473 link_conf->eht_mu_beamformer =
1474 params->eht_cap->fixed.phy_cap_info[7] &
1475 (IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
1476 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
1477 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ);
1478 link_conf->eht_80mhz_full_bw_ul_mumimo =
1479 params->eht_cap->fixed.phy_cap_info[7] &
1480 (IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
1481 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
1482 IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ);
1483 link_conf->eht_disable_mcs15 =
1484 u8_get_bits(params->eht_oper->params,
1485 IEEE80211_EHT_OPER_MCS15_DISABLE);
1486 } else {
1487 link_conf->eht_su_beamformer = false;
1488 link_conf->eht_su_beamformee = false;
1489 link_conf->eht_mu_beamformer = false;
1490 }
1491
1492 if (sdata->vif.type == NL80211_IFTYPE_AP &&
1493 params->mbssid_config.tx_wdev) {
1494 err = ieee80211_set_ap_mbssid_options(sdata,
1495 ¶ms->mbssid_config,
1496 link_conf);
1497 if (err)
1498 return err;
1499 }
1500
1501 err = ieee80211_link_use_channel(link, &chanreq,
1502 IEEE80211_CHANCTX_SHARED);
1503 if (!err)
1504 ieee80211_link_copy_chanctx_to_vlans(link, false);
1505 if (err) {
1506 link_conf->beacon_int = prev_beacon_int;
1507 return err;
1508 }
1509
1510 /*
1511 * Apply control port protocol, this allows us to
1512 * not encrypt dynamic WEP control frames.
1513 */
1514 sdata->control_port_protocol = params->crypto.control_port_ethertype;
1515 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1516 sdata->control_port_over_nl80211 =
1517 params->crypto.control_port_over_nl80211;
1518 sdata->control_port_no_preauth =
1519 params->crypto.control_port_no_preauth;
1520
1521 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1522 vlan->control_port_protocol =
1523 params->crypto.control_port_ethertype;
1524 vlan->control_port_no_encrypt =
1525 params->crypto.control_port_no_encrypt;
1526 vlan->control_port_over_nl80211 =
1527 params->crypto.control_port_over_nl80211;
1528 vlan->control_port_no_preauth =
1529 params->crypto.control_port_no_preauth;
1530 }
1531
1532 link_conf->dtim_period = params->dtim_period;
1533 link_conf->enable_beacon = true;
1534 link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1535 link_conf->twt_responder = params->twt_responder;
1536 link_conf->he_obss_pd = params->he_obss_pd;
1537 link_conf->he_bss_color = params->beacon.he_bss_color;
1538 link_conf->s1g_long_beacon_period = params->s1g_long_beacon_period;
1539 sdata->vif.cfg.s1g = params->chandef.chan->band == NL80211_BAND_S1GHZ;
1540
1541 sdata->vif.cfg.ssid_len = params->ssid_len;
1542 if (params->ssid_len)
1543 memcpy(sdata->vif.cfg.ssid, params->ssid,
1544 params->ssid_len);
1545 link_conf->hidden_ssid =
1546 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1547
1548 memset(&link_conf->p2p_noa_attr, 0,
1549 sizeof(link_conf->p2p_noa_attr));
1550 link_conf->p2p_noa_attr.oppps_ctwindow =
1551 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1552 if (params->p2p_opp_ps)
1553 link_conf->p2p_noa_attr.oppps_ctwindow |=
1554 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1555
1556 sdata->beacon_rate_set = false;
1557 if (wiphy_ext_feature_isset(local->hw.wiphy,
1558 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1559 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1560 sdata->beacon_rateidx_mask[i] =
1561 params->beacon_rate.control[i].legacy;
1562 if (sdata->beacon_rateidx_mask[i])
1563 sdata->beacon_rate_set = true;
1564 }
1565 }
1566
1567 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1568 link_conf->beacon_tx_rate = params->beacon_rate;
1569
1570 err = ieee80211_assign_beacon(sdata, link, ¶ms->beacon, NULL, NULL,
1571 &changed);
1572 if (err < 0)
1573 goto error;
1574
1575 err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery,
1576 link, link_conf, &changed);
1577 if (err < 0)
1578 goto error;
1579
1580 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1581 ¶ms->unsol_bcast_probe_resp,
1582 link, link_conf, &changed);
1583 if (err < 0)
1584 goto error;
1585
1586 if (sdata->vif.cfg.s1g) {
1587 err = ieee80211_set_s1g_short_beacon(sdata, link,
1588 ¶ms->s1g_short_beacon);
1589 if (err < 0)
1590 goto error;
1591 }
1592
1593 err = drv_start_ap(sdata->local, sdata, link_conf);
1594 if (err) {
1595 old = sdata_dereference(link->u.ap.beacon, sdata);
1596
1597 if (old)
1598 kfree_rcu(old, rcu_head);
1599 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1600
1601 if (ieee80211_num_beaconing_links(sdata) == 0)
1602 sdata->u.ap.active = false;
1603
1604 goto error;
1605 }
1606
1607 tsf = drv_get_tsf(local, sdata);
1608 ieee80211_recalc_dtim(sdata, tsf);
1609
1610 if (link->u.ap.s1g_short_beacon)
1611 ieee80211_recalc_sb_count(sdata, tsf);
1612
1613 ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1614 ieee80211_link_info_change_notify(sdata, link, changed);
1615
1616 if (ieee80211_num_beaconing_links(sdata) <= 1)
1617 netif_carrier_on(dev);
1618
1619 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1620 netif_carrier_on(vlan->dev);
1621
1622 return 0;
1623
1624 error:
1625 ieee80211_link_release_channel(link);
1626
1627 return err;
1628 }
1629
ieee80211_change_beacon(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ap_update * params)1630 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1631 struct cfg80211_ap_update *params)
1632
1633 {
1634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1635 struct ieee80211_link_data *link;
1636 struct cfg80211_beacon_data *beacon = ¶ms->beacon;
1637 struct beacon_data *old;
1638 int err;
1639 struct ieee80211_bss_conf *link_conf;
1640 u64 changed = 0;
1641
1642 lockdep_assert_wiphy(wiphy);
1643
1644 link = sdata_dereference(sdata->link[beacon->link_id], sdata);
1645 if (!link)
1646 return -ENOLINK;
1647
1648 link_conf = link->conf;
1649
1650 /* don't allow changing the beacon while a countdown is in place - offset
1651 * of channel switch counter may change
1652 */
1653 if (link_conf->csa_active || link_conf->color_change_active)
1654 return -EBUSY;
1655
1656 old = sdata_dereference(link->u.ap.beacon, sdata);
1657 if (!old)
1658 return -ENOENT;
1659
1660 err = ieee80211_assign_beacon(sdata, link, beacon, NULL, NULL,
1661 &changed);
1662 if (err < 0)
1663 return err;
1664
1665 err = ieee80211_set_fils_discovery(sdata, ¶ms->fils_discovery,
1666 link, link_conf, &changed);
1667 if (err < 0)
1668 return err;
1669
1670 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1671 ¶ms->unsol_bcast_probe_resp,
1672 link, link_conf, &changed);
1673 if (err < 0)
1674 return err;
1675
1676 if (link->u.ap.s1g_short_beacon) {
1677 err = ieee80211_set_s1g_short_beacon(sdata, link,
1678 ¶ms->s1g_short_beacon);
1679 if (err < 0)
1680 return err;
1681 }
1682
1683 if (beacon->he_bss_color_valid &&
1684 beacon->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1685 link_conf->he_bss_color.enabled = beacon->he_bss_color.enabled;
1686 changed |= BSS_CHANGED_HE_BSS_COLOR;
1687 }
1688
1689 ieee80211_link_info_change_notify(sdata, link, changed);
1690 return 0;
1691 }
1692
ieee80211_free_next_beacon(struct ieee80211_link_data * link)1693 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1694 {
1695 if (!link->u.ap.next_beacon)
1696 return;
1697
1698 kfree(link->u.ap.next_beacon->mbssid_ies);
1699 kfree(link->u.ap.next_beacon->rnr_ies);
1700 kfree(link->u.ap.next_beacon);
1701 link->u.ap.next_beacon = NULL;
1702 }
1703
ieee80211_stop_ap(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id)1704 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1705 unsigned int link_id)
1706 {
1707 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1708 struct ieee80211_sub_if_data *vlan;
1709 struct ieee80211_local *local = sdata->local;
1710 struct beacon_data *old_beacon;
1711 struct probe_resp *old_probe_resp;
1712 struct fils_discovery_data *old_fils_discovery;
1713 struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1714 struct s1g_short_beacon_data *old_s1g_short_beacon;
1715 struct cfg80211_chan_def chandef;
1716 struct ieee80211_link_data *link =
1717 sdata_dereference(sdata->link[link_id], sdata);
1718 struct ieee80211_bss_conf *link_conf = link->conf;
1719 LIST_HEAD(keys);
1720
1721 lockdep_assert_wiphy(local->hw.wiphy);
1722
1723 old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1724 if (!old_beacon)
1725 return -ENOENT;
1726 old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1727 sdata);
1728 old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1729 sdata);
1730 old_unsol_bcast_probe_resp =
1731 sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1732 sdata);
1733 old_s1g_short_beacon =
1734 sdata_dereference(link->u.ap.s1g_short_beacon, sdata);
1735
1736 /* abort any running channel switch or color change */
1737 link_conf->csa_active = false;
1738 link_conf->color_change_active = false;
1739 ieee80211_vif_unblock_queues_csa(sdata);
1740
1741 ieee80211_free_next_beacon(link);
1742
1743 /* turn off carrier for this interface and dependent VLANs */
1744 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1745 netif_carrier_off(vlan->dev);
1746
1747 if (ieee80211_num_beaconing_links(sdata) <= 1) {
1748 netif_carrier_off(dev);
1749 sdata->u.ap.active = false;
1750 }
1751
1752 /* remove beacon and probe response */
1753 RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1754 RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1755 RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1756 RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1757 RCU_INIT_POINTER(link->u.ap.s1g_short_beacon, NULL);
1758 kfree_rcu(old_beacon, rcu_head);
1759 if (old_probe_resp)
1760 kfree_rcu(old_probe_resp, rcu_head);
1761 if (old_fils_discovery)
1762 kfree_rcu(old_fils_discovery, rcu_head);
1763 if (old_unsol_bcast_probe_resp)
1764 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1765 if (old_s1g_short_beacon)
1766 kfree_rcu(old_s1g_short_beacon, rcu_head);
1767
1768 kfree(link_conf->ftmr_params);
1769 link_conf->ftmr_params = NULL;
1770
1771 link_conf->bssid_index = 0;
1772 link_conf->nontransmitted = false;
1773 link_conf->ema_ap = false;
1774 link_conf->bssid_indicator = 0;
1775
1776 __sta_info_flush(sdata, true, link_id, NULL);
1777
1778 ieee80211_remove_link_keys(link, &keys);
1779 if (!list_empty(&keys)) {
1780 synchronize_net();
1781 ieee80211_free_key_list(local, &keys);
1782 }
1783
1784 ieee80211_stop_mbssid(sdata);
1785 RCU_INIT_POINTER(link_conf->tx_bss_conf, NULL);
1786
1787 link_conf->enable_beacon = false;
1788 sdata->beacon_rate_set = false;
1789 sdata->vif.cfg.ssid_len = 0;
1790 sdata->vif.cfg.s1g = false;
1791 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1792 ieee80211_link_info_change_notify(sdata, link,
1793 BSS_CHANGED_BEACON_ENABLED);
1794
1795 if (sdata->wdev.links[link_id].cac_started) {
1796 chandef = link_conf->chanreq.oper;
1797 wiphy_delayed_work_cancel(wiphy, &link->dfs_cac_timer_work);
1798 cfg80211_cac_event(sdata->dev, &chandef,
1799 NL80211_RADAR_CAC_ABORTED,
1800 GFP_KERNEL, link_id);
1801 }
1802
1803 drv_stop_ap(sdata->local, sdata, link_conf);
1804
1805 /* free all potentially still buffered bcast frames */
1806 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1807 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1808
1809 ieee80211_link_copy_chanctx_to_vlans(link, true);
1810 ieee80211_link_release_channel(link);
1811
1812 return 0;
1813 }
1814
sta_apply_auth_flags(struct ieee80211_local * local,struct sta_info * sta,u32 mask,u32 set)1815 static int sta_apply_auth_flags(struct ieee80211_local *local,
1816 struct sta_info *sta,
1817 u32 mask, u32 set)
1818 {
1819 int ret;
1820
1821 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1822 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1823 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1824 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1825 if (ret)
1826 return ret;
1827 }
1828
1829 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1830 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1831 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1832 /*
1833 * When peer becomes associated, init rate control as
1834 * well. Some drivers require rate control initialized
1835 * before drv_sta_state() is called.
1836 */
1837 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1838 rate_control_rate_init_all_links(sta);
1839
1840 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1841 if (ret)
1842 return ret;
1843 }
1844
1845 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1846 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1847 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1848 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1849 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1850 else
1851 ret = 0;
1852 if (ret)
1853 return ret;
1854 }
1855
1856 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1857 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1858 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1859 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1860 if (ret)
1861 return ret;
1862 }
1863
1864 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1865 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1866 test_sta_flag(sta, WLAN_STA_AUTH)) {
1867 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1868 if (ret)
1869 return ret;
1870 }
1871
1872 return 0;
1873 }
1874
sta_apply_mesh_params(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1875 static void sta_apply_mesh_params(struct ieee80211_local *local,
1876 struct sta_info *sta,
1877 struct station_parameters *params)
1878 {
1879 #ifdef CONFIG_MAC80211_MESH
1880 struct ieee80211_sub_if_data *sdata = sta->sdata;
1881 u64 changed = 0;
1882
1883 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1884 switch (params->plink_state) {
1885 case NL80211_PLINK_ESTAB:
1886 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1887 changed = mesh_plink_inc_estab_count(sdata);
1888 sta->mesh->plink_state = params->plink_state;
1889 sta->mesh->aid = params->peer_aid;
1890
1891 ieee80211_mps_sta_status_update(sta);
1892 changed |= ieee80211_mps_set_sta_local_pm(sta,
1893 sdata->u.mesh.mshcfg.power_mode);
1894
1895 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1896 /* init at low value */
1897 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1898
1899 break;
1900 case NL80211_PLINK_LISTEN:
1901 case NL80211_PLINK_BLOCKED:
1902 case NL80211_PLINK_OPN_SNT:
1903 case NL80211_PLINK_OPN_RCVD:
1904 case NL80211_PLINK_CNF_RCVD:
1905 case NL80211_PLINK_HOLDING:
1906 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1907 changed = mesh_plink_dec_estab_count(sdata);
1908 sta->mesh->plink_state = params->plink_state;
1909
1910 ieee80211_mps_sta_status_update(sta);
1911 changed |= ieee80211_mps_set_sta_local_pm(sta,
1912 NL80211_MESH_POWER_UNKNOWN);
1913 break;
1914 default:
1915 /* nothing */
1916 break;
1917 }
1918 }
1919
1920 switch (params->plink_action) {
1921 case NL80211_PLINK_ACTION_NO_ACTION:
1922 /* nothing */
1923 break;
1924 case NL80211_PLINK_ACTION_OPEN:
1925 changed |= mesh_plink_open(sta);
1926 break;
1927 case NL80211_PLINK_ACTION_BLOCK:
1928 changed |= mesh_plink_block(sta);
1929 break;
1930 }
1931
1932 if (params->local_pm)
1933 changed |= ieee80211_mps_set_sta_local_pm(sta,
1934 params->local_pm);
1935
1936 ieee80211_mbss_info_change_notify(sdata, changed);
1937 #endif
1938 }
1939
1940 enum sta_link_apply_mode {
1941 STA_LINK_MODE_NEW,
1942 STA_LINK_MODE_STA_MODIFY,
1943 STA_LINK_MODE_LINK_MODIFY,
1944 };
1945
sta_link_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,enum sta_link_apply_mode mode,struct link_station_parameters * params)1946 static int sta_link_apply_parameters(struct ieee80211_local *local,
1947 struct sta_info *sta,
1948 enum sta_link_apply_mode mode,
1949 struct link_station_parameters *params)
1950 {
1951 struct ieee80211_supported_band *sband;
1952 struct ieee80211_sub_if_data *sdata = sta->sdata;
1953 u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1954 struct ieee80211_link_data *link =
1955 sdata_dereference(sdata->link[link_id], sdata);
1956 struct link_sta_info *link_sta =
1957 rcu_dereference_protected(sta->link[link_id],
1958 lockdep_is_held(&local->hw.wiphy->mtx));
1959 bool changes = params->link_mac ||
1960 params->txpwr_set ||
1961 params->supported_rates_len ||
1962 params->ht_capa ||
1963 params->vht_capa ||
1964 params->he_capa ||
1965 params->eht_capa ||
1966 params->s1g_capa ||
1967 params->opmode_notif_used;
1968
1969 switch (mode) {
1970 case STA_LINK_MODE_NEW:
1971 if (!params->link_mac)
1972 return -EINVAL;
1973 break;
1974 case STA_LINK_MODE_LINK_MODIFY:
1975 break;
1976 case STA_LINK_MODE_STA_MODIFY:
1977 if (params->link_id >= 0)
1978 break;
1979 if (!changes)
1980 return 0;
1981 break;
1982 }
1983
1984 if (!link || !link_sta)
1985 return -EINVAL;
1986
1987 sband = ieee80211_get_link_sband(link);
1988 if (!sband)
1989 return -EINVAL;
1990
1991 if (params->link_mac) {
1992 if (mode == STA_LINK_MODE_NEW) {
1993 memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1994 memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1995 } else if (!ether_addr_equal(link_sta->addr,
1996 params->link_mac)) {
1997 return -EINVAL;
1998 }
1999 }
2000
2001 if (params->txpwr_set) {
2002 int ret;
2003
2004 link_sta->pub->txpwr.type = params->txpwr.type;
2005 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
2006 link_sta->pub->txpwr.power = params->txpwr.power;
2007 ret = drv_sta_set_txpwr(local, sdata, sta);
2008 if (ret)
2009 return ret;
2010 }
2011
2012 if (params->supported_rates &&
2013 params->supported_rates_len &&
2014 !ieee80211_parse_bitrates(link->conf->chanreq.oper.width,
2015 sband, params->supported_rates,
2016 params->supported_rates_len,
2017 &link_sta->pub->supp_rates[sband->band]))
2018 return -EINVAL;
2019
2020 if (params->ht_capa)
2021 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
2022 params->ht_capa, link_sta);
2023
2024 /* VHT can override some HT caps such as the A-MSDU max length */
2025 if (params->vht_capa)
2026 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
2027 params->vht_capa, NULL,
2028 link_sta);
2029
2030 if (params->he_capa)
2031 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
2032 (void *)params->he_capa,
2033 params->he_capa_len,
2034 (void *)params->he_6ghz_capa,
2035 link_sta);
2036
2037 if (params->he_capa && params->eht_capa)
2038 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
2039 (u8 *)params->he_capa,
2040 params->he_capa_len,
2041 params->eht_capa,
2042 params->eht_capa_len,
2043 link_sta);
2044
2045 if (params->s1g_capa)
2046 ieee80211_s1g_cap_to_sta_s1g_cap(sdata, params->s1g_capa,
2047 link_sta);
2048
2049 ieee80211_sta_init_nss(link_sta);
2050
2051 if (params->opmode_notif_used) {
2052 enum nl80211_chan_width width = link->conf->chanreq.oper.width;
2053
2054 switch (width) {
2055 case NL80211_CHAN_WIDTH_20:
2056 case NL80211_CHAN_WIDTH_40:
2057 case NL80211_CHAN_WIDTH_80:
2058 case NL80211_CHAN_WIDTH_160:
2059 case NL80211_CHAN_WIDTH_80P80:
2060 case NL80211_CHAN_WIDTH_320: /* not VHT, allowed for HE/EHT */
2061 break;
2062 default:
2063 return -EINVAL;
2064 }
2065
2066 /* returned value is only needed for rc update, but the
2067 * rc isn't initialized here yet, so ignore it
2068 */
2069 __ieee80211_vht_handle_opmode(sdata, link_sta,
2070 params->opmode_notif,
2071 sband->band);
2072 }
2073
2074 return 0;
2075 }
2076
sta_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)2077 static int sta_apply_parameters(struct ieee80211_local *local,
2078 struct sta_info *sta,
2079 struct station_parameters *params)
2080 {
2081 struct ieee80211_sub_if_data *sdata = sta->sdata;
2082 u32 mask, set;
2083 int ret = 0;
2084
2085 mask = params->sta_flags_mask;
2086 set = params->sta_flags_set;
2087
2088 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2089 /*
2090 * In mesh mode, ASSOCIATED isn't part of the nl80211
2091 * API but must follow AUTHENTICATED for driver state.
2092 */
2093 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
2094 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
2095 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
2096 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
2097 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2098 /*
2099 * TDLS -- everything follows authorized, but
2100 * only becoming authorized is possible, not
2101 * going back
2102 */
2103 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2104 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2105 BIT(NL80211_STA_FLAG_ASSOCIATED);
2106 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2107 BIT(NL80211_STA_FLAG_ASSOCIATED);
2108 }
2109 }
2110
2111 if (mask & BIT(NL80211_STA_FLAG_WME) &&
2112 local->hw.queues >= IEEE80211_NUM_ACS)
2113 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
2114
2115 /* auth flags will be set later for TDLS,
2116 * and for unassociated stations that move to associated */
2117 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2118 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
2119 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
2120 ret = sta_apply_auth_flags(local, sta, mask, set);
2121 if (ret)
2122 return ret;
2123 }
2124
2125 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
2126 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
2127 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
2128 else
2129 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
2130 }
2131
2132 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
2133 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
2134 if (set & BIT(NL80211_STA_FLAG_MFP))
2135 set_sta_flag(sta, WLAN_STA_MFP);
2136 else
2137 clear_sta_flag(sta, WLAN_STA_MFP);
2138 }
2139
2140 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
2141 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2142 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
2143 else
2144 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
2145 }
2146
2147 if (mask & BIT(NL80211_STA_FLAG_SPP_AMSDU))
2148 sta->sta.spp_amsdu = set & BIT(NL80211_STA_FLAG_SPP_AMSDU);
2149
2150 /* mark TDLS channel switch support, if the AP allows it */
2151 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2152 !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
2153 params->ext_capab_len >= 4 &&
2154 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
2155 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
2156
2157 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2158 !sdata->u.mgd.tdls_wider_bw_prohibited &&
2159 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
2160 params->ext_capab_len >= 8 &&
2161 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
2162 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
2163
2164 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
2165 sta->sta.uapsd_queues = params->uapsd_queues;
2166 sta->sta.max_sp = params->max_sp;
2167 }
2168
2169 ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
2170 params->ext_capab_len);
2171
2172 /*
2173 * cfg80211 validates this (1-2007) and allows setting the AID
2174 * only when creating a new station entry
2175 */
2176 if (params->aid)
2177 sta->sta.aid = params->aid;
2178
2179 /*
2180 * Some of the following updates would be racy if called on an
2181 * existing station, via ieee80211_change_station(). However,
2182 * all such changes are rejected by cfg80211 except for updates
2183 * changing the supported rates on an existing but not yet used
2184 * TDLS peer.
2185 */
2186
2187 if (params->listen_interval >= 0)
2188 sta->listen_interval = params->listen_interval;
2189
2190 if (params->eml_cap_present)
2191 sta->sta.eml_cap = params->eml_cap;
2192
2193 ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_STA_MODIFY,
2194 ¶ms->link_sta_params);
2195 if (ret)
2196 return ret;
2197
2198 if (params->support_p2p_ps >= 0)
2199 sta->sta.support_p2p_ps = params->support_p2p_ps;
2200
2201 if (ieee80211_vif_is_mesh(&sdata->vif))
2202 sta_apply_mesh_params(local, sta, params);
2203
2204 if (params->airtime_weight)
2205 sta->airtime_weight = params->airtime_weight;
2206
2207 /* set the STA state after all sta info from usermode has been set */
2208 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
2209 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
2210 ret = sta_apply_auth_flags(local, sta, mask, set);
2211 if (ret)
2212 return ret;
2213 }
2214
2215 /* Mark the STA as MLO if MLD MAC address is available */
2216 if (params->link_sta_params.mld_mac)
2217 sta->sta.mlo = true;
2218
2219 return 0;
2220 }
2221
ieee80211_add_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)2222 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
2223 const u8 *mac,
2224 struct station_parameters *params)
2225 {
2226 struct ieee80211_local *local = wiphy_priv(wiphy);
2227 struct sta_info *sta;
2228 struct ieee80211_sub_if_data *sdata;
2229 int err;
2230
2231 lockdep_assert_wiphy(local->hw.wiphy);
2232
2233 if (params->vlan) {
2234 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2235
2236 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2237 sdata->vif.type != NL80211_IFTYPE_AP)
2238 return -EINVAL;
2239 } else
2240 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241
2242 if (ether_addr_equal(mac, sdata->vif.addr))
2243 return -EINVAL;
2244
2245 if (!is_valid_ether_addr(mac))
2246 return -EINVAL;
2247
2248 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2249 sdata->vif.type == NL80211_IFTYPE_STATION &&
2250 !sdata->u.mgd.associated)
2251 return -EINVAL;
2252
2253 /*
2254 * If we have a link ID, it can be a non-MLO station on an AP MLD,
2255 * but we need to have a link_mac in that case as well, so use the
2256 * STA's MAC address in that case.
2257 */
2258 if (params->link_sta_params.link_id >= 0)
2259 sta = sta_info_alloc_with_link(sdata, mac,
2260 params->link_sta_params.link_id,
2261 params->link_sta_params.link_mac ?: mac,
2262 GFP_KERNEL);
2263 else
2264 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
2265
2266 if (!sta)
2267 return -ENOMEM;
2268
2269 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2270 sta->sta.tdls = true;
2271
2272 /* Though the mutex is not needed here (since the station is not
2273 * visible yet), sta_apply_parameters (and inner functions) require
2274 * the mutex due to other paths.
2275 */
2276 err = sta_apply_parameters(local, sta, params);
2277 if (err) {
2278 sta_info_free(local, sta);
2279 return err;
2280 }
2281
2282 /*
2283 * for TDLS and for unassociated station, rate control should be
2284 * initialized only when rates are known and station is marked
2285 * authorized/associated
2286 */
2287 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2288 test_sta_flag(sta, WLAN_STA_ASSOC))
2289 rate_control_rate_init_all_links(sta);
2290
2291 return sta_info_insert(sta);
2292 }
2293
ieee80211_del_station(struct wiphy * wiphy,struct net_device * dev,struct station_del_parameters * params)2294 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
2295 struct station_del_parameters *params)
2296 {
2297 struct ieee80211_sub_if_data *sdata;
2298
2299 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2300
2301 if (params->mac)
2302 return sta_info_destroy_addr_bss(sdata, params->mac);
2303
2304 sta_info_flush(sdata, params->link_id);
2305 return 0;
2306 }
2307
ieee80211_change_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)2308 static int ieee80211_change_station(struct wiphy *wiphy,
2309 struct net_device *dev, const u8 *mac,
2310 struct station_parameters *params)
2311 {
2312 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2313 struct ieee80211_local *local = wiphy_priv(wiphy);
2314 struct sta_info *sta;
2315 struct ieee80211_sub_if_data *vlansdata;
2316 enum cfg80211_station_type statype;
2317 int err;
2318
2319 lockdep_assert_wiphy(local->hw.wiphy);
2320
2321 sta = sta_info_get_bss(sdata, mac);
2322 if (!sta)
2323 return -ENOENT;
2324
2325 switch (sdata->vif.type) {
2326 case NL80211_IFTYPE_MESH_POINT:
2327 if (sdata->u.mesh.user_mpm)
2328 statype = CFG80211_STA_MESH_PEER_USER;
2329 else
2330 statype = CFG80211_STA_MESH_PEER_KERNEL;
2331 break;
2332 case NL80211_IFTYPE_ADHOC:
2333 statype = CFG80211_STA_IBSS;
2334 break;
2335 case NL80211_IFTYPE_STATION:
2336 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2337 statype = CFG80211_STA_AP_STA;
2338 break;
2339 }
2340 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2341 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2342 else
2343 statype = CFG80211_STA_TDLS_PEER_SETUP;
2344 break;
2345 case NL80211_IFTYPE_AP:
2346 case NL80211_IFTYPE_AP_VLAN:
2347 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2348 statype = CFG80211_STA_AP_CLIENT;
2349 else
2350 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2351 break;
2352 default:
2353 return -EOPNOTSUPP;
2354 }
2355
2356 err = cfg80211_check_station_change(wiphy, params, statype);
2357 if (err)
2358 return err;
2359
2360 if (params->vlan && params->vlan != sta->sdata->dev) {
2361 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2362
2363 if (params->vlan->ieee80211_ptr->use_4addr) {
2364 if (vlansdata->u.vlan.sta)
2365 return -EBUSY;
2366
2367 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2368 __ieee80211_check_fast_rx_iface(vlansdata);
2369 drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2370 }
2371
2372 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2373 sta->sdata->u.vlan.sta)
2374 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2375
2376 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2377 ieee80211_vif_dec_num_mcast(sta->sdata);
2378
2379 sta->sdata = vlansdata;
2380 ieee80211_check_fast_rx(sta);
2381 ieee80211_check_fast_xmit(sta);
2382
2383 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2384 ieee80211_vif_inc_num_mcast(sta->sdata);
2385 cfg80211_send_layer2_update(sta->sdata->dev,
2386 sta->sta.addr);
2387 }
2388 }
2389
2390 err = sta_apply_parameters(local, sta, params);
2391 if (err)
2392 return err;
2393
2394 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2395 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2396 ieee80211_recalc_ps(local);
2397 ieee80211_recalc_ps_vif(sdata);
2398 }
2399
2400 return 0;
2401 }
2402
2403 #ifdef CONFIG_MAC80211_MESH
ieee80211_add_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2404 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2405 const u8 *dst, const u8 *next_hop)
2406 {
2407 struct ieee80211_sub_if_data *sdata;
2408 struct mesh_path *mpath;
2409 struct sta_info *sta;
2410
2411 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2412
2413 rcu_read_lock();
2414 sta = sta_info_get(sdata, next_hop);
2415 if (!sta) {
2416 rcu_read_unlock();
2417 return -ENOENT;
2418 }
2419
2420 mpath = mesh_path_add(sdata, dst);
2421 if (IS_ERR(mpath)) {
2422 rcu_read_unlock();
2423 return PTR_ERR(mpath);
2424 }
2425
2426 mesh_path_fix_nexthop(mpath, sta);
2427
2428 rcu_read_unlock();
2429 return 0;
2430 }
2431
ieee80211_del_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst)2432 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2433 const u8 *dst)
2434 {
2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436
2437 if (dst)
2438 return mesh_path_del(sdata, dst);
2439
2440 mesh_path_flush_by_iface(sdata);
2441 return 0;
2442 }
2443
ieee80211_change_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2444 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2445 const u8 *dst, const u8 *next_hop)
2446 {
2447 struct ieee80211_sub_if_data *sdata;
2448 struct mesh_path *mpath;
2449 struct sta_info *sta;
2450
2451 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2452
2453 rcu_read_lock();
2454
2455 sta = sta_info_get(sdata, next_hop);
2456 if (!sta) {
2457 rcu_read_unlock();
2458 return -ENOENT;
2459 }
2460
2461 mpath = mesh_path_lookup(sdata, dst);
2462 if (!mpath) {
2463 rcu_read_unlock();
2464 return -ENOENT;
2465 }
2466
2467 mesh_path_fix_nexthop(mpath, sta);
2468
2469 rcu_read_unlock();
2470 return 0;
2471 }
2472
mpath_set_pinfo(struct mesh_path * mpath,u8 * next_hop,struct mpath_info * pinfo)2473 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2474 struct mpath_info *pinfo)
2475 {
2476 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2477
2478 if (next_hop_sta)
2479 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2480 else
2481 eth_zero_addr(next_hop);
2482
2483 memset(pinfo, 0, sizeof(*pinfo));
2484
2485 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2486
2487 pinfo->filled = MPATH_INFO_FRAME_QLEN |
2488 MPATH_INFO_SN |
2489 MPATH_INFO_METRIC |
2490 MPATH_INFO_EXPTIME |
2491 MPATH_INFO_DISCOVERY_TIMEOUT |
2492 MPATH_INFO_DISCOVERY_RETRIES |
2493 MPATH_INFO_FLAGS |
2494 MPATH_INFO_HOP_COUNT |
2495 MPATH_INFO_PATH_CHANGE;
2496
2497 pinfo->frame_qlen = mpath->frame_queue.qlen;
2498 pinfo->sn = mpath->sn;
2499 pinfo->metric = mpath->metric;
2500 if (time_before(jiffies, mpath->exp_time))
2501 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2502 pinfo->discovery_timeout =
2503 jiffies_to_msecs(mpath->discovery_timeout);
2504 pinfo->discovery_retries = mpath->discovery_retries;
2505 if (mpath->flags & MESH_PATH_ACTIVE)
2506 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2507 if (mpath->flags & MESH_PATH_RESOLVING)
2508 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2509 if (mpath->flags & MESH_PATH_SN_VALID)
2510 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2511 if (mpath->flags & MESH_PATH_FIXED)
2512 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2513 if (mpath->flags & MESH_PATH_RESOLVED)
2514 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2515 pinfo->hop_count = mpath->hop_count;
2516 pinfo->path_change_count = mpath->path_change_count;
2517 }
2518
ieee80211_get_mpath(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2519 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2520 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2521
2522 {
2523 struct ieee80211_sub_if_data *sdata;
2524 struct mesh_path *mpath;
2525
2526 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2527
2528 rcu_read_lock();
2529 mpath = mesh_path_lookup(sdata, dst);
2530 if (!mpath) {
2531 rcu_read_unlock();
2532 return -ENOENT;
2533 }
2534 memcpy(dst, mpath->dst, ETH_ALEN);
2535 mpath_set_pinfo(mpath, next_hop, pinfo);
2536 rcu_read_unlock();
2537 return 0;
2538 }
2539
ieee80211_dump_mpath(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2540 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2541 int idx, u8 *dst, u8 *next_hop,
2542 struct mpath_info *pinfo)
2543 {
2544 struct ieee80211_sub_if_data *sdata;
2545 struct mesh_path *mpath;
2546
2547 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2548
2549 rcu_read_lock();
2550 mpath = mesh_path_lookup_by_idx(sdata, idx);
2551 if (!mpath) {
2552 rcu_read_unlock();
2553 return -ENOENT;
2554 }
2555 memcpy(dst, mpath->dst, ETH_ALEN);
2556 mpath_set_pinfo(mpath, next_hop, pinfo);
2557 rcu_read_unlock();
2558 return 0;
2559 }
2560
mpp_set_pinfo(struct mesh_path * mpath,u8 * mpp,struct mpath_info * pinfo)2561 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2562 struct mpath_info *pinfo)
2563 {
2564 memset(pinfo, 0, sizeof(*pinfo));
2565 memcpy(mpp, mpath->mpp, ETH_ALEN);
2566
2567 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2568 }
2569
ieee80211_get_mpp(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2570 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2571 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2572
2573 {
2574 struct ieee80211_sub_if_data *sdata;
2575 struct mesh_path *mpath;
2576
2577 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2578
2579 rcu_read_lock();
2580 mpath = mpp_path_lookup(sdata, dst);
2581 if (!mpath) {
2582 rcu_read_unlock();
2583 return -ENOENT;
2584 }
2585 memcpy(dst, mpath->dst, ETH_ALEN);
2586 mpp_set_pinfo(mpath, mpp, pinfo);
2587 rcu_read_unlock();
2588 return 0;
2589 }
2590
ieee80211_dump_mpp(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2591 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2592 int idx, u8 *dst, u8 *mpp,
2593 struct mpath_info *pinfo)
2594 {
2595 struct ieee80211_sub_if_data *sdata;
2596 struct mesh_path *mpath;
2597
2598 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2599
2600 rcu_read_lock();
2601 mpath = mpp_path_lookup_by_idx(sdata, idx);
2602 if (!mpath) {
2603 rcu_read_unlock();
2604 return -ENOENT;
2605 }
2606 memcpy(dst, mpath->dst, ETH_ALEN);
2607 mpp_set_pinfo(mpath, mpp, pinfo);
2608 rcu_read_unlock();
2609 return 0;
2610 }
2611
ieee80211_get_mesh_config(struct wiphy * wiphy,struct net_device * dev,struct mesh_config * conf)2612 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2613 struct net_device *dev,
2614 struct mesh_config *conf)
2615 {
2616 struct ieee80211_sub_if_data *sdata;
2617 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2618
2619 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2620 return 0;
2621 }
2622
_chg_mesh_attr(enum nl80211_meshconf_params parm,u32 mask)2623 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2624 {
2625 return (mask >> (parm-1)) & 0x1;
2626 }
2627
copy_mesh_setup(struct ieee80211_if_mesh * ifmsh,const struct mesh_setup * setup)2628 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2629 const struct mesh_setup *setup)
2630 {
2631 u8 *new_ie;
2632 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2633 struct ieee80211_sub_if_data, u.mesh);
2634 int i;
2635
2636 /* allocate information elements */
2637 new_ie = NULL;
2638
2639 if (setup->ie_len) {
2640 new_ie = kmemdup(setup->ie, setup->ie_len,
2641 GFP_KERNEL);
2642 if (!new_ie)
2643 return -ENOMEM;
2644 }
2645 ifmsh->ie_len = setup->ie_len;
2646 ifmsh->ie = new_ie;
2647
2648 /* now copy the rest of the setup parameters */
2649 ifmsh->mesh_id_len = setup->mesh_id_len;
2650 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2651 ifmsh->mesh_sp_id = setup->sync_method;
2652 ifmsh->mesh_pp_id = setup->path_sel_proto;
2653 ifmsh->mesh_pm_id = setup->path_metric;
2654 ifmsh->user_mpm = setup->user_mpm;
2655 ifmsh->mesh_auth_id = setup->auth_id;
2656 ifmsh->security = IEEE80211_MESH_SEC_NONE;
2657 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2658 if (setup->is_authenticated)
2659 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2660 if (setup->is_secure)
2661 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2662
2663 /* mcast rate setting in Mesh Node */
2664 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2665 sizeof(setup->mcast_rate));
2666 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2667
2668 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2669 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2670
2671 sdata->beacon_rate_set = false;
2672 if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2673 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2674 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2675 sdata->beacon_rateidx_mask[i] =
2676 setup->beacon_rate.control[i].legacy;
2677 if (sdata->beacon_rateidx_mask[i])
2678 sdata->beacon_rate_set = true;
2679 }
2680 }
2681
2682 return 0;
2683 }
2684
ieee80211_update_mesh_config(struct wiphy * wiphy,struct net_device * dev,u32 mask,const struct mesh_config * nconf)2685 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2686 struct net_device *dev, u32 mask,
2687 const struct mesh_config *nconf)
2688 {
2689 struct mesh_config *conf;
2690 struct ieee80211_sub_if_data *sdata;
2691 struct ieee80211_if_mesh *ifmsh;
2692
2693 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2694 ifmsh = &sdata->u.mesh;
2695
2696 /* Set the config options which we are interested in setting */
2697 conf = &(sdata->u.mesh.mshcfg);
2698 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2699 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2700 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2701 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2702 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2703 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2704 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2705 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2706 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2707 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2708 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2709 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2710 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2711 conf->element_ttl = nconf->element_ttl;
2712 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2713 if (ifmsh->user_mpm)
2714 return -EBUSY;
2715 conf->auto_open_plinks = nconf->auto_open_plinks;
2716 }
2717 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2718 conf->dot11MeshNbrOffsetMaxNeighbor =
2719 nconf->dot11MeshNbrOffsetMaxNeighbor;
2720 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2721 conf->dot11MeshHWMPmaxPREQretries =
2722 nconf->dot11MeshHWMPmaxPREQretries;
2723 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2724 conf->path_refresh_time = nconf->path_refresh_time;
2725 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2726 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2727 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2728 conf->dot11MeshHWMPactivePathTimeout =
2729 nconf->dot11MeshHWMPactivePathTimeout;
2730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2731 conf->dot11MeshHWMPpreqMinInterval =
2732 nconf->dot11MeshHWMPpreqMinInterval;
2733 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2734 conf->dot11MeshHWMPperrMinInterval =
2735 nconf->dot11MeshHWMPperrMinInterval;
2736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2737 mask))
2738 conf->dot11MeshHWMPnetDiameterTraversalTime =
2739 nconf->dot11MeshHWMPnetDiameterTraversalTime;
2740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2741 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2742 ieee80211_mesh_root_setup(ifmsh);
2743 }
2744 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2745 /* our current gate announcement implementation rides on root
2746 * announcements, so require this ifmsh to also be a root node
2747 * */
2748 if (nconf->dot11MeshGateAnnouncementProtocol &&
2749 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2750 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2751 ieee80211_mesh_root_setup(ifmsh);
2752 }
2753 conf->dot11MeshGateAnnouncementProtocol =
2754 nconf->dot11MeshGateAnnouncementProtocol;
2755 }
2756 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2757 conf->dot11MeshHWMPRannInterval =
2758 nconf->dot11MeshHWMPRannInterval;
2759 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2760 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2761 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2762 /* our RSSI threshold implementation is supported only for
2763 * devices that report signal in dBm.
2764 */
2765 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2766 return -EOPNOTSUPP;
2767 conf->rssi_threshold = nconf->rssi_threshold;
2768 }
2769 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2770 conf->ht_opmode = nconf->ht_opmode;
2771 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2772 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2773 BSS_CHANGED_HT);
2774 }
2775 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2776 conf->dot11MeshHWMPactivePathToRootTimeout =
2777 nconf->dot11MeshHWMPactivePathToRootTimeout;
2778 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2779 conf->dot11MeshHWMProotInterval =
2780 nconf->dot11MeshHWMProotInterval;
2781 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2782 conf->dot11MeshHWMPconfirmationInterval =
2783 nconf->dot11MeshHWMPconfirmationInterval;
2784 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2785 conf->power_mode = nconf->power_mode;
2786 ieee80211_mps_local_status_update(sdata);
2787 }
2788 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2789 conf->dot11MeshAwakeWindowDuration =
2790 nconf->dot11MeshAwakeWindowDuration;
2791 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2792 conf->plink_timeout = nconf->plink_timeout;
2793 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2794 conf->dot11MeshConnectedToMeshGate =
2795 nconf->dot11MeshConnectedToMeshGate;
2796 if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2797 conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2798 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2799 conf->dot11MeshConnectedToAuthServer =
2800 nconf->dot11MeshConnectedToAuthServer;
2801 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2802 return 0;
2803 }
2804
ieee80211_join_mesh(struct wiphy * wiphy,struct net_device * dev,const struct mesh_config * conf,const struct mesh_setup * setup)2805 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2806 const struct mesh_config *conf,
2807 const struct mesh_setup *setup)
2808 {
2809 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2810 struct ieee80211_chan_req chanreq = { .oper = setup->chandef };
2811 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2812 int err;
2813
2814 lockdep_assert_wiphy(sdata->local->hw.wiphy);
2815
2816 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2817 err = copy_mesh_setup(ifmsh, setup);
2818 if (err)
2819 return err;
2820
2821 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2822
2823 /* can mesh use other SMPS modes? */
2824 sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2825 sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2826
2827 err = ieee80211_link_use_channel(&sdata->deflink, &chanreq,
2828 IEEE80211_CHANCTX_SHARED);
2829 if (err)
2830 return err;
2831
2832 return ieee80211_start_mesh(sdata);
2833 }
2834
ieee80211_leave_mesh(struct wiphy * wiphy,struct net_device * dev)2835 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2836 {
2837 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2838
2839 lockdep_assert_wiphy(sdata->local->hw.wiphy);
2840
2841 ieee80211_stop_mesh(sdata);
2842 ieee80211_link_release_channel(&sdata->deflink);
2843 kfree(sdata->u.mesh.ie);
2844
2845 return 0;
2846 }
2847 #endif
2848
ieee80211_change_bss(struct wiphy * wiphy,struct net_device * dev,struct bss_parameters * params)2849 static int ieee80211_change_bss(struct wiphy *wiphy,
2850 struct net_device *dev,
2851 struct bss_parameters *params)
2852 {
2853 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2854 struct ieee80211_link_data *link;
2855 struct ieee80211_supported_band *sband;
2856 u64 changed = 0;
2857
2858 link = ieee80211_link_or_deflink(sdata, params->link_id, true);
2859 if (IS_ERR(link))
2860 return PTR_ERR(link);
2861
2862 if (!sdata_dereference(link->u.ap.beacon, sdata))
2863 return -ENOENT;
2864
2865 sband = ieee80211_get_link_sband(link);
2866 if (!sband)
2867 return -EINVAL;
2868
2869 if (params->basic_rates) {
2870 if (!ieee80211_parse_bitrates(link->conf->chanreq.oper.width,
2871 wiphy->bands[sband->band],
2872 params->basic_rates,
2873 params->basic_rates_len,
2874 &link->conf->basic_rates))
2875 return -EINVAL;
2876 changed |= BSS_CHANGED_BASIC_RATES;
2877 ieee80211_check_rate_mask(link);
2878 }
2879
2880 if (params->use_cts_prot >= 0) {
2881 link->conf->use_cts_prot = params->use_cts_prot;
2882 changed |= BSS_CHANGED_ERP_CTS_PROT;
2883 }
2884 if (params->use_short_preamble >= 0) {
2885 link->conf->use_short_preamble = params->use_short_preamble;
2886 changed |= BSS_CHANGED_ERP_PREAMBLE;
2887 }
2888
2889 if (!link->conf->use_short_slot &&
2890 (sband->band == NL80211_BAND_5GHZ ||
2891 sband->band == NL80211_BAND_6GHZ)) {
2892 link->conf->use_short_slot = true;
2893 changed |= BSS_CHANGED_ERP_SLOT;
2894 }
2895
2896 if (params->use_short_slot_time >= 0) {
2897 link->conf->use_short_slot = params->use_short_slot_time;
2898 changed |= BSS_CHANGED_ERP_SLOT;
2899 }
2900
2901 if (params->ap_isolate >= 0) {
2902 if (params->ap_isolate)
2903 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2904 else
2905 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2906 ieee80211_check_fast_rx_iface(sdata);
2907 }
2908
2909 if (params->ht_opmode >= 0) {
2910 link->conf->ht_operation_mode = (u16)params->ht_opmode;
2911 changed |= BSS_CHANGED_HT;
2912 }
2913
2914 if (params->p2p_ctwindow >= 0) {
2915 link->conf->p2p_noa_attr.oppps_ctwindow &=
2916 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2917 link->conf->p2p_noa_attr.oppps_ctwindow |=
2918 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2919 changed |= BSS_CHANGED_P2P_PS;
2920 }
2921
2922 if (params->p2p_opp_ps > 0) {
2923 link->conf->p2p_noa_attr.oppps_ctwindow |=
2924 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2925 changed |= BSS_CHANGED_P2P_PS;
2926 } else if (params->p2p_opp_ps == 0) {
2927 link->conf->p2p_noa_attr.oppps_ctwindow &=
2928 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2929 changed |= BSS_CHANGED_P2P_PS;
2930 }
2931
2932 ieee80211_link_info_change_notify(sdata, link, changed);
2933
2934 return 0;
2935 }
2936
ieee80211_set_txq_params(struct wiphy * wiphy,struct net_device * dev,struct ieee80211_txq_params * params)2937 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2938 struct net_device *dev,
2939 struct ieee80211_txq_params *params)
2940 {
2941 struct ieee80211_local *local = wiphy_priv(wiphy);
2942 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2943 struct ieee80211_link_data *link =
2944 ieee80211_link_or_deflink(sdata, params->link_id, true);
2945 struct ieee80211_tx_queue_params p;
2946
2947 if (!local->ops->conf_tx)
2948 return -EOPNOTSUPP;
2949
2950 if (local->hw.queues < IEEE80211_NUM_ACS)
2951 return -EOPNOTSUPP;
2952
2953 if (IS_ERR(link))
2954 return PTR_ERR(link);
2955
2956 memset(&p, 0, sizeof(p));
2957 p.aifs = params->aifs;
2958 p.cw_max = params->cwmax;
2959 p.cw_min = params->cwmin;
2960 p.txop = params->txop;
2961
2962 /*
2963 * Setting tx queue params disables u-apsd because it's only
2964 * called in master mode.
2965 */
2966 p.uapsd = false;
2967
2968 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2969
2970 link->tx_conf[params->ac] = p;
2971 if (drv_conf_tx(local, link, params->ac, &p)) {
2972 wiphy_debug(local->hw.wiphy,
2973 "failed to set TX queue parameters for AC %d\n",
2974 params->ac);
2975 return -EINVAL;
2976 }
2977
2978 ieee80211_link_info_change_notify(sdata, link,
2979 BSS_CHANGED_QOS);
2980
2981 return 0;
2982 }
2983
2984 #ifdef CONFIG_PM
ieee80211_suspend(struct wiphy * wiphy,struct cfg80211_wowlan * wowlan)2985 static int ieee80211_suspend(struct wiphy *wiphy,
2986 struct cfg80211_wowlan *wowlan)
2987 {
2988 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2989 }
2990
ieee80211_resume(struct wiphy * wiphy)2991 static int ieee80211_resume(struct wiphy *wiphy)
2992 {
2993 return __ieee80211_resume(wiphy_priv(wiphy));
2994 }
2995 #else
2996 #define ieee80211_suspend NULL
2997 #define ieee80211_resume NULL
2998 #endif
2999
ieee80211_scan(struct wiphy * wiphy,struct cfg80211_scan_request * req)3000 static int ieee80211_scan(struct wiphy *wiphy,
3001 struct cfg80211_scan_request *req)
3002 {
3003 struct ieee80211_sub_if_data *sdata;
3004
3005 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
3006
3007 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
3008 case NL80211_IFTYPE_STATION:
3009 case NL80211_IFTYPE_ADHOC:
3010 case NL80211_IFTYPE_MESH_POINT:
3011 case NL80211_IFTYPE_P2P_CLIENT:
3012 case NL80211_IFTYPE_P2P_DEVICE:
3013 break;
3014 case NL80211_IFTYPE_P2P_GO:
3015 if (sdata->local->ops->hw_scan)
3016 break;
3017 /*
3018 * FIXME: implement NoA while scanning in software,
3019 * for now fall through to allow scanning only when
3020 * beaconing hasn't been configured yet
3021 */
3022 fallthrough;
3023 case NL80211_IFTYPE_AP:
3024 /*
3025 * If the scan has been forced (and the driver supports
3026 * forcing), don't care about being beaconing already.
3027 * This will create problems to the attached stations (e.g. all
3028 * the frames sent while scanning on other channel will be
3029 * lost)
3030 */
3031 if (ieee80211_num_beaconing_links(sdata) &&
3032 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
3033 !(req->flags & NL80211_SCAN_FLAG_AP)))
3034 return -EOPNOTSUPP;
3035 break;
3036 case NL80211_IFTYPE_NAN:
3037 default:
3038 return -EOPNOTSUPP;
3039 }
3040
3041 return ieee80211_request_scan(sdata, req);
3042 }
3043
ieee80211_abort_scan(struct wiphy * wiphy,struct wireless_dev * wdev)3044 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
3045 {
3046 ieee80211_scan_cancel(wiphy_priv(wiphy));
3047 }
3048
3049 static int
ieee80211_sched_scan_start(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_sched_scan_request * req)3050 ieee80211_sched_scan_start(struct wiphy *wiphy,
3051 struct net_device *dev,
3052 struct cfg80211_sched_scan_request *req)
3053 {
3054 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3055
3056 if (!sdata->local->ops->sched_scan_start)
3057 return -EOPNOTSUPP;
3058
3059 return ieee80211_request_sched_scan_start(sdata, req);
3060 }
3061
3062 static int
ieee80211_sched_scan_stop(struct wiphy * wiphy,struct net_device * dev,u64 reqid)3063 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
3064 u64 reqid)
3065 {
3066 struct ieee80211_local *local = wiphy_priv(wiphy);
3067
3068 if (!local->ops->sched_scan_stop)
3069 return -EOPNOTSUPP;
3070
3071 return ieee80211_request_sched_scan_stop(local);
3072 }
3073
ieee80211_auth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_auth_request * req)3074 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
3075 struct cfg80211_auth_request *req)
3076 {
3077 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
3078 }
3079
ieee80211_assoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_assoc_request * req)3080 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
3081 struct cfg80211_assoc_request *req)
3082 {
3083 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
3084 }
3085
ieee80211_deauth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_deauth_request * req)3086 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
3087 struct cfg80211_deauth_request *req)
3088 {
3089 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
3090 }
3091
ieee80211_disassoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_disassoc_request * req)3092 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
3093 struct cfg80211_disassoc_request *req)
3094 {
3095 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
3096 }
3097
ieee80211_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)3098 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
3099 struct cfg80211_ibss_params *params)
3100 {
3101 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
3102 }
3103
ieee80211_leave_ibss(struct wiphy * wiphy,struct net_device * dev)3104 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
3105 {
3106 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
3107 }
3108
ieee80211_join_ocb(struct wiphy * wiphy,struct net_device * dev,struct ocb_setup * setup)3109 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
3110 struct ocb_setup *setup)
3111 {
3112 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
3113 }
3114
ieee80211_leave_ocb(struct wiphy * wiphy,struct net_device * dev)3115 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
3116 {
3117 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
3118 }
3119
ieee80211_set_mcast_rate(struct wiphy * wiphy,struct net_device * dev,int rate[NUM_NL80211_BANDS])3120 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
3121 int rate[NUM_NL80211_BANDS])
3122 {
3123 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3124
3125 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
3126 sizeof(int) * NUM_NL80211_BANDS);
3127
3128 if (ieee80211_sdata_running(sdata))
3129 ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3130 BSS_CHANGED_MCAST_RATE);
3131
3132 return 0;
3133 }
3134
ieee80211_set_wiphy_params(struct wiphy * wiphy,int radio_idx,u32 changed)3135 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, int radio_idx,
3136 u32 changed)
3137 {
3138 struct ieee80211_local *local = wiphy_priv(wiphy);
3139 int err;
3140
3141 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
3142 ieee80211_check_fast_xmit_all(local);
3143
3144 err = drv_set_frag_threshold(local, radio_idx,
3145 wiphy->frag_threshold);
3146
3147 if (err) {
3148 ieee80211_check_fast_xmit_all(local);
3149 return err;
3150 }
3151 }
3152
3153 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
3154 (changed & WIPHY_PARAM_DYN_ACK)) {
3155 s16 coverage_class;
3156
3157 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
3158 wiphy->coverage_class : -1;
3159 err = drv_set_coverage_class(local, radio_idx,
3160 coverage_class);
3161
3162 if (err)
3163 return err;
3164 }
3165
3166 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
3167 u32 rts_threshold;
3168
3169 if ((radio_idx == -1) || (radio_idx >= wiphy->n_radio))
3170 rts_threshold = wiphy->rts_threshold;
3171 else
3172 rts_threshold =
3173 wiphy->radio_cfg[radio_idx].rts_threshold;
3174
3175 err = drv_set_rts_threshold(local, radio_idx, rts_threshold);
3176
3177 if (err)
3178 return err;
3179 }
3180
3181 if (changed & WIPHY_PARAM_RETRY_SHORT) {
3182 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
3183 return -EINVAL;
3184 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
3185 }
3186 if (changed & WIPHY_PARAM_RETRY_LONG) {
3187 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
3188 return -EINVAL;
3189 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
3190 }
3191 if (changed &
3192 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
3193 ieee80211_hw_config(local, radio_idx,
3194 IEEE80211_CONF_CHANGE_RETRY_LIMITS);
3195
3196 if (changed & (WIPHY_PARAM_TXQ_LIMIT |
3197 WIPHY_PARAM_TXQ_MEMORY_LIMIT |
3198 WIPHY_PARAM_TXQ_QUANTUM))
3199 ieee80211_txq_set_params(local, radio_idx);
3200
3201 return 0;
3202 }
3203
ieee80211_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int radio_idx,enum nl80211_tx_power_setting type,int mbm)3204 static int ieee80211_set_tx_power(struct wiphy *wiphy,
3205 struct wireless_dev *wdev, int radio_idx,
3206 enum nl80211_tx_power_setting type, int mbm)
3207 {
3208 struct ieee80211_local *local = wiphy_priv(wiphy);
3209 struct ieee80211_sub_if_data *sdata;
3210 enum nl80211_tx_power_setting txp_type = type;
3211 bool update_txp_type = false;
3212 bool has_monitor = false;
3213 int user_power_level;
3214 int old_power = local->user_power_level;
3215
3216 lockdep_assert_wiphy(local->hw.wiphy);
3217
3218 switch (type) {
3219 case NL80211_TX_POWER_AUTOMATIC:
3220 user_power_level = IEEE80211_UNSET_POWER_LEVEL;
3221 txp_type = NL80211_TX_POWER_LIMITED;
3222 break;
3223 case NL80211_TX_POWER_LIMITED:
3224 case NL80211_TX_POWER_FIXED:
3225 if (mbm < 0 || (mbm % 100))
3226 return -EOPNOTSUPP;
3227 user_power_level = MBM_TO_DBM(mbm);
3228 break;
3229 default:
3230 return -EINVAL;
3231 }
3232
3233 if (wdev) {
3234 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3235
3236 if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
3237 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) {
3238 if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF))
3239 return -EOPNOTSUPP;
3240
3241 sdata = wiphy_dereference(local->hw.wiphy,
3242 local->monitor_sdata);
3243 if (!sdata)
3244 return -EOPNOTSUPP;
3245 }
3246
3247 for (int link_id = 0;
3248 link_id < ARRAY_SIZE(sdata->link);
3249 link_id++) {
3250 struct ieee80211_link_data *link =
3251 wiphy_dereference(wiphy, sdata->link[link_id]);
3252
3253 if (!link)
3254 continue;
3255
3256 link->user_power_level = user_power_level;
3257
3258 if (txp_type != link->conf->txpower_type) {
3259 update_txp_type = true;
3260 link->conf->txpower_type = txp_type;
3261 }
3262
3263 ieee80211_recalc_txpower(link, update_txp_type);
3264 }
3265 return 0;
3266 }
3267
3268 local->user_power_level = user_power_level;
3269
3270 list_for_each_entry(sdata, &local->interfaces, list) {
3271 if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
3272 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR)) {
3273 has_monitor = true;
3274 continue;
3275 }
3276
3277 for (int link_id = 0;
3278 link_id < ARRAY_SIZE(sdata->link);
3279 link_id++) {
3280 struct ieee80211_link_data *link =
3281 wiphy_dereference(wiphy, sdata->link[link_id]);
3282
3283 if (!link)
3284 continue;
3285
3286 link->user_power_level = local->user_power_level;
3287 if (txp_type != link->conf->txpower_type)
3288 update_txp_type = true;
3289 link->conf->txpower_type = txp_type;
3290 }
3291 }
3292 list_for_each_entry(sdata, &local->interfaces, list) {
3293 if (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
3294 !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR))
3295 continue;
3296
3297 for (int link_id = 0;
3298 link_id < ARRAY_SIZE(sdata->link);
3299 link_id++) {
3300 struct ieee80211_link_data *link =
3301 wiphy_dereference(wiphy, sdata->link[link_id]);
3302
3303 if (!link)
3304 continue;
3305
3306 ieee80211_recalc_txpower(link, update_txp_type);
3307 }
3308 }
3309
3310 if (has_monitor) {
3311 sdata = wiphy_dereference(local->hw.wiphy,
3312 local->monitor_sdata);
3313 if (sdata && ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF)) {
3314 sdata->deflink.user_power_level = local->user_power_level;
3315 if (txp_type != sdata->vif.bss_conf.txpower_type)
3316 update_txp_type = true;
3317 sdata->vif.bss_conf.txpower_type = txp_type;
3318
3319 ieee80211_recalc_txpower(&sdata->deflink,
3320 update_txp_type);
3321 }
3322 }
3323
3324 if (local->emulate_chanctx &&
3325 (old_power != local->user_power_level))
3326 ieee80211_hw_conf_chan(local);
3327
3328 return 0;
3329 }
3330
ieee80211_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int radio_idx,unsigned int link_id,int * dbm)3331 static int ieee80211_get_tx_power(struct wiphy *wiphy,
3332 struct wireless_dev *wdev,
3333 int radio_idx,
3334 unsigned int link_id,
3335 int *dbm)
3336 {
3337 struct ieee80211_local *local = wiphy_priv(wiphy);
3338 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3339 struct ieee80211_link_data *link_data;
3340
3341 if (local->ops->get_txpower &&
3342 (sdata->flags & IEEE80211_SDATA_IN_DRIVER))
3343 return drv_get_txpower(local, sdata, link_id, dbm);
3344
3345 if (local->emulate_chanctx) {
3346 *dbm = local->hw.conf.power_level;
3347 } else {
3348 link_data = wiphy_dereference(wiphy, sdata->link[link_id]);
3349
3350 if (link_data)
3351 *dbm = link_data->conf->txpower;
3352 else
3353 return -ENOLINK;
3354 }
3355
3356 /* INT_MIN indicates no power level was set yet */
3357 if (*dbm == INT_MIN)
3358 return -EINVAL;
3359
3360 return 0;
3361 }
3362
ieee80211_rfkill_poll(struct wiphy * wiphy)3363 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3364 {
3365 struct ieee80211_local *local = wiphy_priv(wiphy);
3366
3367 drv_rfkill_poll(local);
3368 }
3369
3370 #ifdef CONFIG_NL80211_TESTMODE
ieee80211_testmode_cmd(struct wiphy * wiphy,struct wireless_dev * wdev,void * data,int len)3371 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3372 struct wireless_dev *wdev,
3373 void *data, int len)
3374 {
3375 struct ieee80211_local *local = wiphy_priv(wiphy);
3376 struct ieee80211_vif *vif = NULL;
3377
3378 if (!local->ops->testmode_cmd)
3379 return -EOPNOTSUPP;
3380
3381 if (wdev) {
3382 struct ieee80211_sub_if_data *sdata;
3383
3384 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3385 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3386 vif = &sdata->vif;
3387 }
3388
3389 return local->ops->testmode_cmd(&local->hw, vif, data, len);
3390 }
3391
ieee80211_testmode_dump(struct wiphy * wiphy,struct sk_buff * skb,struct netlink_callback * cb,void * data,int len)3392 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3393 struct sk_buff *skb,
3394 struct netlink_callback *cb,
3395 void *data, int len)
3396 {
3397 struct ieee80211_local *local = wiphy_priv(wiphy);
3398
3399 if (!local->ops->testmode_dump)
3400 return -EOPNOTSUPP;
3401
3402 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3403 }
3404 #endif
3405
__ieee80211_request_smps_mgd(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,enum ieee80211_smps_mode smps_mode)3406 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3407 struct ieee80211_link_data *link,
3408 enum ieee80211_smps_mode smps_mode)
3409 {
3410 const u8 *ap;
3411 enum ieee80211_smps_mode old_req;
3412 int err;
3413 struct sta_info *sta;
3414 bool tdls_peer_found = false;
3415
3416 lockdep_assert_wiphy(sdata->local->hw.wiphy);
3417
3418 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3419 return -EINVAL;
3420
3421 if (!ieee80211_vif_link_active(&sdata->vif, link->link_id))
3422 return 0;
3423
3424 old_req = link->u.mgd.req_smps;
3425 link->u.mgd.req_smps = smps_mode;
3426
3427 /* The driver indicated that EML is enabled for the interface, which
3428 * implies that SMPS flows towards the AP should be stopped.
3429 */
3430 if (sdata->vif.driver_flags & IEEE80211_VIF_EML_ACTIVE)
3431 return 0;
3432
3433 if (old_req == smps_mode &&
3434 smps_mode != IEEE80211_SMPS_AUTOMATIC)
3435 return 0;
3436
3437 /*
3438 * If not associated, or current association is not an HT
3439 * association, there's no need to do anything, just store
3440 * the new value until we associate.
3441 */
3442 if (!sdata->u.mgd.associated ||
3443 link->conf->chanreq.oper.width == NL80211_CHAN_WIDTH_20_NOHT)
3444 return 0;
3445
3446 ap = sdata->vif.cfg.ap_addr;
3447
3448 rcu_read_lock();
3449 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3450 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3451 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3452 continue;
3453
3454 tdls_peer_found = true;
3455 break;
3456 }
3457 rcu_read_unlock();
3458
3459 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3460 if (tdls_peer_found || !sdata->u.mgd.powersave)
3461 smps_mode = IEEE80211_SMPS_OFF;
3462 else
3463 smps_mode = IEEE80211_SMPS_DYNAMIC;
3464 }
3465
3466 /* send SM PS frame to AP */
3467 err = ieee80211_send_smps_action(sdata, smps_mode,
3468 ap, ap,
3469 ieee80211_vif_is_mld(&sdata->vif) ?
3470 link->link_id : -1);
3471 if (err)
3472 link->u.mgd.req_smps = old_req;
3473 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3474 ieee80211_teardown_tdls_peers(link);
3475
3476 return err;
3477 }
3478
ieee80211_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)3479 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3480 bool enabled, int timeout)
3481 {
3482 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3483 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3484 unsigned int link_id;
3485
3486 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3487 return -EOPNOTSUPP;
3488
3489 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3490 return -EOPNOTSUPP;
3491
3492 if (enabled == sdata->u.mgd.powersave &&
3493 timeout == local->dynamic_ps_forced_timeout)
3494 return 0;
3495
3496 sdata->u.mgd.powersave = enabled;
3497 local->dynamic_ps_forced_timeout = timeout;
3498
3499 /* no change, but if automatic follow powersave */
3500 for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3501 struct ieee80211_link_data *link;
3502
3503 link = sdata_dereference(sdata->link[link_id], sdata);
3504
3505 if (!link)
3506 continue;
3507 __ieee80211_request_smps_mgd(sdata, link,
3508 link->u.mgd.req_smps);
3509 }
3510
3511 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3512 ieee80211_hw_config(local, -1, IEEE80211_CONF_CHANGE_PS);
3513
3514 ieee80211_recalc_ps(local);
3515 ieee80211_recalc_ps_vif(sdata);
3516 ieee80211_check_fast_rx_iface(sdata);
3517
3518 return 0;
3519 }
3520
ieee80211_set_cqm_rssi_link(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,s32 rssi_thold,u32 rssi_hyst,s32 rssi_low,s32 rssi_high)3521 static void ieee80211_set_cqm_rssi_link(struct ieee80211_sub_if_data *sdata,
3522 struct ieee80211_link_data *link,
3523 s32 rssi_thold, u32 rssi_hyst,
3524 s32 rssi_low, s32 rssi_high)
3525 {
3526 struct ieee80211_bss_conf *conf;
3527
3528 if (!link || !link->conf)
3529 return;
3530
3531 conf = link->conf;
3532
3533 if (rssi_thold && rssi_hyst &&
3534 rssi_thold == conf->cqm_rssi_thold &&
3535 rssi_hyst == conf->cqm_rssi_hyst)
3536 return;
3537
3538 conf->cqm_rssi_thold = rssi_thold;
3539 conf->cqm_rssi_hyst = rssi_hyst;
3540 conf->cqm_rssi_low = rssi_low;
3541 conf->cqm_rssi_high = rssi_high;
3542 link->u.mgd.last_cqm_event_signal = 0;
3543
3544 if (!ieee80211_vif_link_active(&sdata->vif, link->link_id))
3545 return;
3546
3547 if (sdata->u.mgd.associated &&
3548 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3549 ieee80211_link_info_change_notify(sdata, link, BSS_CHANGED_CQM);
3550 }
3551
ieee80211_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)3552 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3553 struct net_device *dev,
3554 s32 rssi_thold, u32 rssi_hyst)
3555 {
3556 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3557 struct ieee80211_vif *vif = &sdata->vif;
3558 int link_id;
3559
3560 if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3561 !(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3562 return -EOPNOTSUPP;
3563
3564 /* For MLD, handle CQM change on all the active links */
3565 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
3566 struct ieee80211_link_data *link =
3567 sdata_dereference(sdata->link[link_id], sdata);
3568
3569 ieee80211_set_cqm_rssi_link(sdata, link, rssi_thold, rssi_hyst,
3570 0, 0);
3571 }
3572
3573 return 0;
3574 }
3575
ieee80211_set_cqm_rssi_range_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_low,s32 rssi_high)3576 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3577 struct net_device *dev,
3578 s32 rssi_low, s32 rssi_high)
3579 {
3580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3581 struct ieee80211_vif *vif = &sdata->vif;
3582 int link_id;
3583
3584 if (vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)
3585 return -EOPNOTSUPP;
3586
3587 /* For MLD, handle CQM change on all the active links */
3588 for (link_id = 0; link_id < IEEE80211_MLD_MAX_NUM_LINKS; link_id++) {
3589 struct ieee80211_link_data *link =
3590 sdata_dereference(sdata->link[link_id], sdata);
3591
3592 ieee80211_set_cqm_rssi_link(sdata, link, 0, 0,
3593 rssi_low, rssi_high);
3594 }
3595
3596 return 0;
3597 }
3598
ieee80211_set_bitrate_mask(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,const u8 * addr,const struct cfg80211_bitrate_mask * mask)3599 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3600 struct net_device *dev,
3601 unsigned int link_id,
3602 const u8 *addr,
3603 const struct cfg80211_bitrate_mask *mask)
3604 {
3605 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3606 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3607 int i, ret;
3608
3609 if (!ieee80211_sdata_running(sdata))
3610 return -ENETDOWN;
3611
3612 /*
3613 * If active validate the setting and reject it if it doesn't leave
3614 * at least one basic rate usable, since we really have to be able
3615 * to send something, and if we're an AP we have to be able to do
3616 * so at a basic rate so that all clients can receive it.
3617 */
3618 if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3619 sdata->vif.bss_conf.chanreq.oper.chan) {
3620 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3621 enum nl80211_band band;
3622
3623 band = sdata->vif.bss_conf.chanreq.oper.chan->band;
3624
3625 if (!(mask->control[band].legacy & basic_rates))
3626 return -EINVAL;
3627 }
3628
3629 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3630 ret = drv_set_bitrate_mask(local, sdata, mask);
3631 if (ret)
3632 return ret;
3633 }
3634
3635 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3636 struct ieee80211_supported_band *sband = wiphy->bands[i];
3637 int j;
3638
3639 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3640 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3641 sizeof(mask->control[i].ht_mcs));
3642 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3643 mask->control[i].vht_mcs,
3644 sizeof(mask->control[i].vht_mcs));
3645
3646 sdata->rc_has_mcs_mask[i] = false;
3647 sdata->rc_has_vht_mcs_mask[i] = false;
3648 if (!sband)
3649 continue;
3650
3651 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3652 if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3653 sdata->rc_has_mcs_mask[i] = true;
3654 break;
3655 }
3656 }
3657
3658 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3659 if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3660 sdata->rc_has_vht_mcs_mask[i] = true;
3661 break;
3662 }
3663 }
3664 }
3665
3666 return 0;
3667 }
3668
ieee80211_is_scan_ongoing(struct wiphy * wiphy,struct ieee80211_local * local,struct cfg80211_chan_def * chandef)3669 static bool ieee80211_is_scan_ongoing(struct wiphy *wiphy,
3670 struct ieee80211_local *local,
3671 struct cfg80211_chan_def *chandef)
3672 {
3673 struct cfg80211_scan_request *scan_req;
3674 int chan_radio_idx, req_radio_idx;
3675 struct ieee80211_roc_work *roc;
3676
3677 if (list_empty(&local->roc_list) && !local->scanning)
3678 return false;
3679
3680 if (wiphy->n_radio < 2)
3681 return true;
3682
3683 req_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chandef->chan);
3684 if (req_radio_idx < 0)
3685 return true;
3686
3687 if (local->scanning) {
3688 scan_req = wiphy_dereference(wiphy, local->scan_req);
3689 /*
3690 * Scan is going on but info is not there. Should not happen
3691 * but if it does, let's not take risk and assume we can't use
3692 * the hw hence return true
3693 */
3694 if (WARN_ON_ONCE(!scan_req))
3695 return true;
3696
3697 return ieee80211_is_radio_idx_in_scan_req(wiphy, scan_req,
3698 req_radio_idx);
3699 }
3700
3701 list_for_each_entry(roc, &local->roc_list, list) {
3702 chan_radio_idx = cfg80211_get_radio_idx_by_chan(wiphy,
3703 roc->chan);
3704 /*
3705 * The roc work is added but chan_radio_idx is invalid.
3706 * Should not happen but if it does, let's not take
3707 * risk and return true.
3708 */
3709 if (chan_radio_idx < 0)
3710 return true;
3711
3712 if (chan_radio_idx == req_radio_idx)
3713 return true;
3714 }
3715
3716 return false;
3717 }
3718
ieee80211_start_radar_detection(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef,u32 cac_time_ms,int link_id)3719 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3720 struct net_device *dev,
3721 struct cfg80211_chan_def *chandef,
3722 u32 cac_time_ms, int link_id)
3723 {
3724 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3725 struct ieee80211_chan_req chanreq = { .oper = *chandef };
3726 struct ieee80211_local *local = sdata->local;
3727 struct ieee80211_link_data *link_data;
3728 int err;
3729
3730 lockdep_assert_wiphy(local->hw.wiphy);
3731
3732 if (ieee80211_is_scan_ongoing(wiphy, local, chandef))
3733 return -EBUSY;
3734
3735 link_data = sdata_dereference(sdata->link[link_id], sdata);
3736 if (!link_data)
3737 return -ENOLINK;
3738
3739 /* whatever, but channel contexts should not complain about that one */
3740 link_data->smps_mode = IEEE80211_SMPS_OFF;
3741 link_data->needed_rx_chains = local->rx_chains;
3742
3743 err = ieee80211_link_use_channel(link_data, &chanreq,
3744 IEEE80211_CHANCTX_SHARED);
3745 if (err)
3746 return err;
3747
3748 wiphy_delayed_work_queue(wiphy, &link_data->dfs_cac_timer_work,
3749 msecs_to_jiffies(cac_time_ms));
3750
3751 return 0;
3752 }
3753
ieee80211_end_cac(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id)3754 static void ieee80211_end_cac(struct wiphy *wiphy,
3755 struct net_device *dev, unsigned int link_id)
3756 {
3757 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3758 struct ieee80211_local *local = sdata->local;
3759 struct ieee80211_link_data *link_data;
3760
3761 lockdep_assert_wiphy(local->hw.wiphy);
3762
3763 list_for_each_entry(sdata, &local->interfaces, list) {
3764 link_data = sdata_dereference(sdata->link[link_id], sdata);
3765 if (!link_data)
3766 continue;
3767
3768 wiphy_delayed_work_cancel(wiphy,
3769 &link_data->dfs_cac_timer_work);
3770
3771 if (sdata->wdev.links[link_id].cac_started) {
3772 ieee80211_link_release_channel(link_data);
3773 sdata->wdev.links[link_id].cac_started = false;
3774 }
3775 }
3776 }
3777
3778 static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data * beacon)3779 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3780 {
3781 struct cfg80211_beacon_data *new_beacon;
3782 u8 *pos;
3783 int len;
3784
3785 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3786 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3787 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
3788
3789 if (beacon->mbssid_ies)
3790 len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
3791 beacon->rnr_ies,
3792 beacon->mbssid_ies->cnt);
3793
3794 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3795 if (!new_beacon)
3796 return NULL;
3797
3798 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3799 new_beacon->mbssid_ies =
3800 kzalloc(struct_size(new_beacon->mbssid_ies,
3801 elem, beacon->mbssid_ies->cnt),
3802 GFP_KERNEL);
3803 if (!new_beacon->mbssid_ies) {
3804 kfree(new_beacon);
3805 return NULL;
3806 }
3807
3808 if (beacon->rnr_ies && beacon->rnr_ies->cnt) {
3809 new_beacon->rnr_ies =
3810 kzalloc(struct_size(new_beacon->rnr_ies,
3811 elem, beacon->rnr_ies->cnt),
3812 GFP_KERNEL);
3813 if (!new_beacon->rnr_ies) {
3814 kfree(new_beacon->mbssid_ies);
3815 kfree(new_beacon);
3816 return NULL;
3817 }
3818 }
3819 }
3820
3821 pos = (u8 *)(new_beacon + 1);
3822 if (beacon->head_len) {
3823 new_beacon->head_len = beacon->head_len;
3824 new_beacon->head = pos;
3825 memcpy(pos, beacon->head, beacon->head_len);
3826 pos += beacon->head_len;
3827 }
3828 if (beacon->tail_len) {
3829 new_beacon->tail_len = beacon->tail_len;
3830 new_beacon->tail = pos;
3831 memcpy(pos, beacon->tail, beacon->tail_len);
3832 pos += beacon->tail_len;
3833 }
3834 if (beacon->beacon_ies_len) {
3835 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3836 new_beacon->beacon_ies = pos;
3837 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3838 pos += beacon->beacon_ies_len;
3839 }
3840 if (beacon->proberesp_ies_len) {
3841 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3842 new_beacon->proberesp_ies = pos;
3843 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3844 pos += beacon->proberesp_ies_len;
3845 }
3846 if (beacon->assocresp_ies_len) {
3847 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3848 new_beacon->assocresp_ies = pos;
3849 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3850 pos += beacon->assocresp_ies_len;
3851 }
3852 if (beacon->probe_resp_len) {
3853 new_beacon->probe_resp_len = beacon->probe_resp_len;
3854 new_beacon->probe_resp = pos;
3855 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3856 pos += beacon->probe_resp_len;
3857 }
3858 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3859 pos += ieee80211_copy_mbssid_beacon(pos,
3860 new_beacon->mbssid_ies,
3861 beacon->mbssid_ies);
3862 if (beacon->rnr_ies && beacon->rnr_ies->cnt)
3863 pos += ieee80211_copy_rnr_beacon(pos,
3864 new_beacon->rnr_ies,
3865 beacon->rnr_ies);
3866 }
3867
3868 /* might copy -1, meaning no changes requested */
3869 new_beacon->ftm_responder = beacon->ftm_responder;
3870 if (beacon->lci) {
3871 new_beacon->lci_len = beacon->lci_len;
3872 new_beacon->lci = pos;
3873 memcpy(pos, beacon->lci, beacon->lci_len);
3874 pos += beacon->lci_len;
3875 }
3876 if (beacon->civicloc) {
3877 new_beacon->civicloc_len = beacon->civicloc_len;
3878 new_beacon->civicloc = pos;
3879 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3880 pos += beacon->civicloc_len;
3881 }
3882
3883 return new_beacon;
3884 }
3885
ieee80211_csa_finish(struct ieee80211_vif * vif,unsigned int link_id)3886 void ieee80211_csa_finish(struct ieee80211_vif *vif, unsigned int link_id)
3887 {
3888 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3889 struct ieee80211_local *local = sdata->local;
3890 struct ieee80211_bss_conf *tx_bss_conf;
3891 struct ieee80211_link_data *link_data;
3892
3893 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
3894 return;
3895
3896 rcu_read_lock();
3897
3898 link_data = rcu_dereference(sdata->link[link_id]);
3899 if (WARN_ON(!link_data)) {
3900 rcu_read_unlock();
3901 return;
3902 }
3903
3904 tx_bss_conf = rcu_dereference(link_data->conf->tx_bss_conf);
3905 if (tx_bss_conf == link_data->conf) {
3906 /* Trigger ieee80211_csa_finish() on the non-transmitting
3907 * interfaces when channel switch is received on
3908 * transmitting interface
3909 */
3910 struct ieee80211_link_data *iter;
3911
3912 for_each_sdata_link_rcu(local, iter) {
3913 if (iter->sdata == sdata ||
3914 rcu_access_pointer(iter->conf->tx_bss_conf) != tx_bss_conf)
3915 continue;
3916
3917 wiphy_work_queue(iter->sdata->local->hw.wiphy,
3918 &iter->csa.finalize_work);
3919 }
3920 }
3921
3922 wiphy_work_queue(local->hw.wiphy, &link_data->csa.finalize_work);
3923
3924 rcu_read_unlock();
3925 }
3926 EXPORT_SYMBOL(ieee80211_csa_finish);
3927
ieee80211_channel_switch_disconnect(struct ieee80211_vif * vif)3928 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif)
3929 {
3930 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3931 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3932 struct ieee80211_local *local = sdata->local;
3933
3934 sdata_info(sdata, "channel switch failed, disconnecting\n");
3935 wiphy_work_queue(local->hw.wiphy, &ifmgd->csa_connection_drop_work);
3936 }
3937 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3938
ieee80211_set_after_csa_beacon(struct ieee80211_link_data * link_data,u64 * changed)3939 static int ieee80211_set_after_csa_beacon(struct ieee80211_link_data *link_data,
3940 u64 *changed)
3941 {
3942 struct ieee80211_sub_if_data *sdata = link_data->sdata;
3943 int err;
3944
3945 switch (sdata->vif.type) {
3946 case NL80211_IFTYPE_AP:
3947 if (!link_data->u.ap.next_beacon)
3948 return -EINVAL;
3949
3950 err = ieee80211_assign_beacon(sdata, link_data,
3951 link_data->u.ap.next_beacon,
3952 NULL, NULL, changed);
3953 ieee80211_free_next_beacon(link_data);
3954
3955 if (err < 0)
3956 return err;
3957 break;
3958 case NL80211_IFTYPE_ADHOC:
3959 err = ieee80211_ibss_finish_csa(sdata, changed);
3960 if (err < 0)
3961 return err;
3962 break;
3963 #ifdef CONFIG_MAC80211_MESH
3964 case NL80211_IFTYPE_MESH_POINT:
3965 err = ieee80211_mesh_finish_csa(sdata, changed);
3966 if (err < 0)
3967 return err;
3968 break;
3969 #endif
3970 default:
3971 WARN_ON(1);
3972 return -EINVAL;
3973 }
3974
3975 return 0;
3976 }
3977
__ieee80211_csa_finalize(struct ieee80211_link_data * link_data)3978 static int __ieee80211_csa_finalize(struct ieee80211_link_data *link_data)
3979 {
3980 struct ieee80211_sub_if_data *sdata = link_data->sdata;
3981 struct ieee80211_local *local = sdata->local;
3982 struct ieee80211_bss_conf *link_conf = link_data->conf;
3983 u64 changed = 0;
3984 int err;
3985
3986 lockdep_assert_wiphy(local->hw.wiphy);
3987
3988 /*
3989 * using reservation isn't immediate as it may be deferred until later
3990 * with multi-vif. once reservation is complete it will re-schedule the
3991 * work with no reserved_chanctx so verify chandef to check if it
3992 * completed successfully
3993 */
3994
3995 if (link_data->reserved_chanctx) {
3996 /*
3997 * with multi-vif csa driver may call ieee80211_csa_finish()
3998 * many times while waiting for other interfaces to use their
3999 * reservations
4000 */
4001 if (link_data->reserved_ready)
4002 return 0;
4003
4004 return ieee80211_link_use_reserved_context(link_data);
4005 }
4006
4007 if (!cfg80211_chandef_identical(&link_conf->chanreq.oper,
4008 &link_data->csa.chanreq.oper))
4009 return -EINVAL;
4010
4011 link_conf->csa_active = false;
4012
4013 err = ieee80211_set_after_csa_beacon(link_data, &changed);
4014 if (err)
4015 return err;
4016
4017 ieee80211_link_info_change_notify(sdata, link_data, changed);
4018
4019 ieee80211_vif_unblock_queues_csa(sdata);
4020
4021 err = drv_post_channel_switch(link_data);
4022 if (err)
4023 return err;
4024
4025 cfg80211_ch_switch_notify(sdata->dev, &link_data->csa.chanreq.oper,
4026 link_data->link_id);
4027
4028 return 0;
4029 }
4030
ieee80211_csa_finalize(struct ieee80211_link_data * link_data)4031 static void ieee80211_csa_finalize(struct ieee80211_link_data *link_data)
4032 {
4033 struct ieee80211_sub_if_data *sdata = link_data->sdata;
4034
4035 if (__ieee80211_csa_finalize(link_data)) {
4036 sdata_info(sdata, "failed to finalize CSA on link %d, disconnecting\n",
4037 link_data->link_id);
4038 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
4039 GFP_KERNEL);
4040 }
4041 }
4042
ieee80211_csa_finalize_work(struct wiphy * wiphy,struct wiphy_work * work)4043 void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work)
4044 {
4045 struct ieee80211_link_data *link =
4046 container_of(work, struct ieee80211_link_data, csa.finalize_work);
4047 struct ieee80211_sub_if_data *sdata = link->sdata;
4048 struct ieee80211_local *local = sdata->local;
4049
4050 lockdep_assert_wiphy(local->hw.wiphy);
4051
4052 /* AP might have been stopped while waiting for the lock. */
4053 if (!link->conf->csa_active)
4054 return;
4055
4056 if (!ieee80211_sdata_running(sdata))
4057 return;
4058
4059 ieee80211_csa_finalize(link);
4060 }
4061
ieee80211_set_csa_beacon(struct ieee80211_link_data * link_data,struct cfg80211_csa_settings * params,u64 * changed)4062 static int ieee80211_set_csa_beacon(struct ieee80211_link_data *link_data,
4063 struct cfg80211_csa_settings *params,
4064 u64 *changed)
4065 {
4066 struct ieee80211_sub_if_data *sdata = link_data->sdata;
4067 struct ieee80211_csa_settings csa = {};
4068 int err;
4069
4070 switch (sdata->vif.type) {
4071 case NL80211_IFTYPE_AP:
4072 link_data->u.ap.next_beacon =
4073 cfg80211_beacon_dup(¶ms->beacon_after);
4074 if (!link_data->u.ap.next_beacon)
4075 return -ENOMEM;
4076
4077 /*
4078 * With a count of 0, we don't have to wait for any
4079 * TBTT before switching, so complete the CSA
4080 * immediately. In theory, with a count == 1 we
4081 * should delay the switch until just before the next
4082 * TBTT, but that would complicate things so we switch
4083 * immediately too. If we would delay the switch
4084 * until the next TBTT, we would have to set the probe
4085 * response here.
4086 *
4087 * TODO: A channel switch with count <= 1 without
4088 * sending a CSA action frame is kind of useless,
4089 * because the clients won't know we're changing
4090 * channels. The action frame must be implemented
4091 * either here or in the userspace.
4092 */
4093 if (params->count <= 1)
4094 break;
4095
4096 if ((params->n_counter_offsets_beacon >
4097 IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
4098 (params->n_counter_offsets_presp >
4099 IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
4100 ieee80211_free_next_beacon(link_data);
4101 return -EINVAL;
4102 }
4103
4104 csa.counter_offsets_beacon = params->counter_offsets_beacon;
4105 csa.counter_offsets_presp = params->counter_offsets_presp;
4106 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
4107 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
4108 csa.count = params->count;
4109
4110 err = ieee80211_assign_beacon(sdata, link_data,
4111 ¶ms->beacon_csa, &csa,
4112 NULL, changed);
4113 if (err < 0) {
4114 ieee80211_free_next_beacon(link_data);
4115 return err;
4116 }
4117
4118 break;
4119 case NL80211_IFTYPE_ADHOC:
4120 if (!sdata->vif.cfg.ibss_joined)
4121 return -EINVAL;
4122
4123 if (params->chandef.width != sdata->u.ibss.chandef.width)
4124 return -EINVAL;
4125
4126 switch (params->chandef.width) {
4127 case NL80211_CHAN_WIDTH_40:
4128 if (cfg80211_get_chandef_type(¶ms->chandef) !=
4129 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
4130 return -EINVAL;
4131 break;
4132 case NL80211_CHAN_WIDTH_5:
4133 case NL80211_CHAN_WIDTH_10:
4134 case NL80211_CHAN_WIDTH_20_NOHT:
4135 case NL80211_CHAN_WIDTH_20:
4136 break;
4137 default:
4138 return -EINVAL;
4139 }
4140
4141 /* changes into another band are not supported */
4142 if (sdata->u.ibss.chandef.chan->band !=
4143 params->chandef.chan->band)
4144 return -EINVAL;
4145
4146 /* see comments in the NL80211_IFTYPE_AP block */
4147 if (params->count > 1) {
4148 err = ieee80211_ibss_csa_beacon(sdata, params, changed);
4149 if (err < 0)
4150 return err;
4151 }
4152
4153 ieee80211_send_action_csa(sdata, params);
4154
4155 break;
4156 #ifdef CONFIG_MAC80211_MESH
4157 case NL80211_IFTYPE_MESH_POINT: {
4158 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
4159
4160 /* changes into another band are not supported */
4161 if (sdata->vif.bss_conf.chanreq.oper.chan->band !=
4162 params->chandef.chan->band)
4163 return -EINVAL;
4164
4165 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
4166 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
4167 if (!ifmsh->pre_value)
4168 ifmsh->pre_value = 1;
4169 else
4170 ifmsh->pre_value++;
4171 }
4172
4173 /* see comments in the NL80211_IFTYPE_AP block */
4174 if (params->count > 1) {
4175 err = ieee80211_mesh_csa_beacon(sdata, params, changed);
4176 if (err < 0) {
4177 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
4178 return err;
4179 }
4180 }
4181
4182 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
4183 ieee80211_send_action_csa(sdata, params);
4184
4185 break;
4186 }
4187 #endif
4188 default:
4189 return -EOPNOTSUPP;
4190 }
4191
4192 return 0;
4193 }
4194
ieee80211_color_change_abort(struct ieee80211_link_data * link)4195 static void ieee80211_color_change_abort(struct ieee80211_link_data *link)
4196 {
4197 link->conf->color_change_active = false;
4198
4199 ieee80211_free_next_beacon(link);
4200
4201 cfg80211_color_change_aborted_notify(link->sdata->dev, link->link_id);
4202 }
4203
4204 static int
__ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)4205 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
4206 struct cfg80211_csa_settings *params)
4207 {
4208 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4209 struct ieee80211_chan_req chanreq = { .oper = params->chandef };
4210 struct ieee80211_local *local = sdata->local;
4211 struct ieee80211_channel_switch ch_switch = {
4212 .link_id = params->link_id,
4213 };
4214 struct ieee80211_chanctx_conf *conf;
4215 struct ieee80211_chanctx *chanctx;
4216 struct ieee80211_bss_conf *link_conf;
4217 struct ieee80211_link_data *link_data;
4218 u64 changed = 0;
4219 u8 link_id = params->link_id;
4220 int err;
4221
4222 lockdep_assert_wiphy(local->hw.wiphy);
4223
4224 if (ieee80211_is_scan_ongoing(wiphy, local, ¶ms->chandef))
4225 return -EBUSY;
4226
4227 if (sdata->wdev.links[link_id].cac_started)
4228 return -EBUSY;
4229
4230 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
4231 return -EINVAL;
4232
4233 link_data = wiphy_dereference(wiphy, sdata->link[link_id]);
4234 if (!link_data)
4235 return -ENOLINK;
4236
4237 link_conf = link_data->conf;
4238
4239 if (chanreq.oper.punctured && !link_conf->eht_support)
4240 return -EINVAL;
4241
4242 /* don't allow another channel switch if one is already active. */
4243 if (link_conf->csa_active)
4244 return -EBUSY;
4245
4246 conf = wiphy_dereference(wiphy, link_conf->chanctx_conf);
4247 if (!conf) {
4248 err = -EBUSY;
4249 goto out;
4250 }
4251
4252 if (params->chandef.chan->freq_offset) {
4253 /* this may work, but is untested */
4254 err = -EOPNOTSUPP;
4255 goto out;
4256 }
4257
4258 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
4259 ¶ms->unsol_bcast_probe_resp,
4260 link_data, link_conf, &changed);
4261 if (err)
4262 goto out;
4263
4264 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
4265
4266 ch_switch.timestamp = 0;
4267 ch_switch.device_timestamp = 0;
4268 ch_switch.block_tx = params->block_tx;
4269 ch_switch.chandef = chanreq.oper;
4270 ch_switch.count = params->count;
4271
4272 err = drv_pre_channel_switch(sdata, &ch_switch);
4273 if (err)
4274 goto out;
4275
4276 err = ieee80211_link_reserve_chanctx(link_data, &chanreq,
4277 chanctx->mode,
4278 params->radar_required);
4279 if (err)
4280 goto out;
4281
4282 /* if reservation is invalid then this will fail */
4283 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0, -1);
4284 if (err) {
4285 ieee80211_link_unreserve_chanctx(link_data);
4286 goto out;
4287 }
4288
4289 /* if there is a color change in progress, abort it */
4290 if (link_conf->color_change_active)
4291 ieee80211_color_change_abort(link_data);
4292
4293 err = ieee80211_set_csa_beacon(link_data, params, &changed);
4294 if (err) {
4295 ieee80211_link_unreserve_chanctx(link_data);
4296 goto out;
4297 }
4298
4299 link_data->csa.chanreq = chanreq;
4300 link_conf->csa_active = true;
4301
4302 if (params->block_tx)
4303 ieee80211_vif_block_queues_csa(sdata);
4304
4305 cfg80211_ch_switch_started_notify(sdata->dev,
4306 &link_data->csa.chanreq.oper, link_id,
4307 params->count, params->block_tx);
4308
4309 if (changed) {
4310 ieee80211_link_info_change_notify(sdata, link_data, changed);
4311 drv_channel_switch_beacon(sdata, &link_data->csa.chanreq.oper);
4312 } else {
4313 /* if the beacon didn't change, we can finalize immediately */
4314 ieee80211_csa_finalize(link_data);
4315 }
4316
4317 out:
4318 return err;
4319 }
4320
ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)4321 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
4322 struct cfg80211_csa_settings *params)
4323 {
4324 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4325 struct ieee80211_local *local = sdata->local;
4326
4327 lockdep_assert_wiphy(local->hw.wiphy);
4328
4329 return __ieee80211_channel_switch(wiphy, dev, params);
4330 }
4331
ieee80211_mgmt_tx_cookie(struct ieee80211_local * local)4332 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
4333 {
4334 lockdep_assert_wiphy(local->hw.wiphy);
4335
4336 local->roc_cookie_counter++;
4337
4338 /* wow, you wrapped 64 bits ... more likely a bug */
4339 if (WARN_ON(local->roc_cookie_counter == 0))
4340 local->roc_cookie_counter++;
4341
4342 return local->roc_cookie_counter;
4343 }
4344
ieee80211_attach_ack_skb(struct ieee80211_local * local,struct sk_buff * skb,u64 * cookie,gfp_t gfp)4345 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
4346 u64 *cookie, gfp_t gfp)
4347 {
4348 unsigned long spin_flags;
4349 struct sk_buff *ack_skb;
4350 int id;
4351
4352 ack_skb = skb_copy(skb, gfp);
4353 if (!ack_skb)
4354 return -ENOMEM;
4355
4356 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
4357 id = idr_alloc(&local->ack_status_frames, ack_skb,
4358 1, 0x2000, GFP_ATOMIC);
4359 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
4360
4361 if (id < 0) {
4362 kfree_skb(ack_skb);
4363 return -ENOMEM;
4364 }
4365
4366 IEEE80211_SKB_CB(skb)->status_data_idr = 1;
4367 IEEE80211_SKB_CB(skb)->status_data = id;
4368
4369 *cookie = ieee80211_mgmt_tx_cookie(local);
4370 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
4371
4372 return 0;
4373 }
4374
4375 static void
ieee80211_update_mgmt_frame_registrations(struct wiphy * wiphy,struct wireless_dev * wdev,struct mgmt_frame_regs * upd)4376 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
4377 struct wireless_dev *wdev,
4378 struct mgmt_frame_regs *upd)
4379 {
4380 struct ieee80211_local *local = wiphy_priv(wiphy);
4381 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4382 u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
4383 u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
4384 bool global_change, intf_change;
4385
4386 global_change =
4387 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
4388 (local->rx_mcast_action_reg !=
4389 !!(upd->global_mcast_stypes & action_mask));
4390 local->probe_req_reg = upd->global_stypes & preq_mask;
4391 local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
4392
4393 intf_change = (sdata->vif.probe_req_reg !=
4394 !!(upd->interface_stypes & preq_mask)) ||
4395 (sdata->vif.rx_mcast_action_reg !=
4396 !!(upd->interface_mcast_stypes & action_mask));
4397 sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
4398 sdata->vif.rx_mcast_action_reg =
4399 upd->interface_mcast_stypes & action_mask;
4400
4401 if (!local->open_count)
4402 return;
4403
4404 if (intf_change && ieee80211_sdata_running(sdata))
4405 drv_config_iface_filter(local, sdata,
4406 sdata->vif.probe_req_reg ?
4407 FIF_PROBE_REQ : 0,
4408 FIF_PROBE_REQ);
4409
4410 if (global_change)
4411 ieee80211_configure_filter(local);
4412 }
4413
ieee80211_set_antenna(struct wiphy * wiphy,int radio_idx,u32 tx_ant,u32 rx_ant)4414 static int ieee80211_set_antenna(struct wiphy *wiphy, int radio_idx,
4415 u32 tx_ant, u32 rx_ant)
4416 {
4417 struct ieee80211_local *local = wiphy_priv(wiphy);
4418 int ret;
4419
4420 if (local->started)
4421 return -EOPNOTSUPP;
4422
4423 ret = drv_set_antenna(local, tx_ant, rx_ant);
4424 if (ret)
4425 return ret;
4426
4427 local->rx_chains = hweight8(rx_ant);
4428 return 0;
4429 }
4430
ieee80211_get_antenna(struct wiphy * wiphy,int radio_idx,u32 * tx_ant,u32 * rx_ant)4431 static int ieee80211_get_antenna(struct wiphy *wiphy, int radio_idx,
4432 u32 *tx_ant, u32 *rx_ant)
4433 {
4434 struct ieee80211_local *local = wiphy_priv(wiphy);
4435
4436 return drv_get_antenna(local, radio_idx, tx_ant, rx_ant);
4437 }
4438
ieee80211_set_rekey_data(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_gtk_rekey_data * data)4439 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
4440 struct net_device *dev,
4441 struct cfg80211_gtk_rekey_data *data)
4442 {
4443 struct ieee80211_local *local = wiphy_priv(wiphy);
4444 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4445
4446 if (!local->ops->set_rekey_data)
4447 return -EOPNOTSUPP;
4448
4449 drv_set_rekey_data(local, sdata, data);
4450
4451 return 0;
4452 }
4453
ieee80211_probe_client(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u64 * cookie)4454 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
4455 const u8 *peer, u64 *cookie)
4456 {
4457 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4458 struct ieee80211_local *local = sdata->local;
4459 struct ieee80211_qos_hdr *nullfunc;
4460 struct sk_buff *skb;
4461 int size = sizeof(*nullfunc);
4462 __le16 fc;
4463 bool qos;
4464 struct ieee80211_tx_info *info;
4465 struct sta_info *sta;
4466 struct ieee80211_chanctx_conf *chanctx_conf;
4467 enum nl80211_band band;
4468 int ret;
4469
4470 /* the lock is needed to assign the cookie later */
4471 lockdep_assert_wiphy(local->hw.wiphy);
4472
4473 rcu_read_lock();
4474 sta = sta_info_get_bss(sdata, peer);
4475 if (!sta) {
4476 ret = -ENOLINK;
4477 goto unlock;
4478 }
4479
4480 qos = sta->sta.wme;
4481
4482 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
4483 if (WARN_ON(!chanctx_conf)) {
4484 ret = -EINVAL;
4485 goto unlock;
4486 }
4487 band = chanctx_conf->def.chan->band;
4488
4489 if (qos) {
4490 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4491 IEEE80211_STYPE_QOS_NULLFUNC |
4492 IEEE80211_FCTL_FROMDS);
4493 } else {
4494 size -= 2;
4495 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4496 IEEE80211_STYPE_NULLFUNC |
4497 IEEE80211_FCTL_FROMDS);
4498 }
4499
4500 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4501 if (!skb) {
4502 ret = -ENOMEM;
4503 goto unlock;
4504 }
4505
4506 skb->dev = dev;
4507
4508 skb_reserve(skb, local->hw.extra_tx_headroom);
4509
4510 nullfunc = skb_put(skb, size);
4511 nullfunc->frame_control = fc;
4512 nullfunc->duration_id = 0;
4513 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4514 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4515 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4516 nullfunc->seq_ctrl = 0;
4517
4518 info = IEEE80211_SKB_CB(skb);
4519
4520 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4521 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4522 info->band = band;
4523
4524 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4525 skb->priority = 7;
4526 if (qos)
4527 nullfunc->qos_ctrl = cpu_to_le16(7);
4528
4529 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4530 if (ret) {
4531 kfree_skb(skb);
4532 goto unlock;
4533 }
4534
4535 local_bh_disable();
4536 ieee80211_xmit(sdata, sta, skb);
4537 local_bh_enable();
4538
4539 ret = 0;
4540 unlock:
4541 rcu_read_unlock();
4542
4543 return ret;
4544 }
4545
ieee80211_cfg_get_channel(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id,struct cfg80211_chan_def * chandef)4546 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4547 struct wireless_dev *wdev,
4548 unsigned int link_id,
4549 struct cfg80211_chan_def *chandef)
4550 {
4551 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4552 struct ieee80211_local *local = wiphy_priv(wiphy);
4553 struct ieee80211_chanctx_conf *chanctx_conf;
4554 struct ieee80211_link_data *link;
4555 int ret = -ENODATA;
4556
4557 rcu_read_lock();
4558 link = rcu_dereference(sdata->link[link_id]);
4559 if (!link) {
4560 ret = -ENOLINK;
4561 goto out;
4562 }
4563
4564 chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4565 if (chanctx_conf) {
4566 *chandef = link->conf->chanreq.oper;
4567 ret = 0;
4568 } else if (local->open_count > 0 &&
4569 local->open_count == local->virt_monitors &&
4570 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4571 *chandef = local->monitor_chanreq.oper;
4572 ret = 0;
4573 }
4574 out:
4575 rcu_read_unlock();
4576
4577 return ret;
4578 }
4579
4580 #ifdef CONFIG_PM
ieee80211_set_wakeup(struct wiphy * wiphy,bool enabled)4581 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4582 {
4583 drv_set_wakeup(wiphy_priv(wiphy), enabled);
4584 }
4585 #endif
4586
ieee80211_set_qos_map(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_qos_map * qos_map)4587 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4588 struct net_device *dev,
4589 struct cfg80211_qos_map *qos_map)
4590 {
4591 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4592 struct mac80211_qos_map *new_qos_map, *old_qos_map;
4593
4594 if (qos_map) {
4595 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4596 if (!new_qos_map)
4597 return -ENOMEM;
4598 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4599 } else {
4600 /* A NULL qos_map was passed to disable QoS mapping */
4601 new_qos_map = NULL;
4602 }
4603
4604 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4605 rcu_assign_pointer(sdata->qos_map, new_qos_map);
4606 if (old_qos_map)
4607 kfree_rcu(old_qos_map, rcu_head);
4608
4609 return 0;
4610 }
4611
ieee80211_set_ap_chanwidth(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,struct cfg80211_chan_def * chandef)4612 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4613 struct net_device *dev,
4614 unsigned int link_id,
4615 struct cfg80211_chan_def *chandef)
4616 {
4617 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4618 struct ieee80211_link_data *link;
4619 struct ieee80211_chan_req chanreq = { .oper = *chandef };
4620 int ret;
4621 u64 changed = 0;
4622
4623 link = sdata_dereference(sdata->link[link_id], sdata);
4624
4625 ret = ieee80211_link_change_chanreq(link, &chanreq, &changed);
4626 if (ret == 0)
4627 ieee80211_link_info_change_notify(sdata, link, changed);
4628
4629 return ret;
4630 }
4631
ieee80211_add_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer,u8 up,u16 admitted_time)4632 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4633 u8 tsid, const u8 *peer, u8 up,
4634 u16 admitted_time)
4635 {
4636 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4637 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4638 int ac = ieee802_1d_to_ac[up];
4639
4640 if (sdata->vif.type != NL80211_IFTYPE_STATION)
4641 return -EOPNOTSUPP;
4642
4643 if (!(sdata->wmm_acm & BIT(up)))
4644 return -EINVAL;
4645
4646 if (ifmgd->tx_tspec[ac].admitted_time)
4647 return -EBUSY;
4648
4649 if (admitted_time) {
4650 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4651 ifmgd->tx_tspec[ac].tsid = tsid;
4652 ifmgd->tx_tspec[ac].up = up;
4653 }
4654
4655 return 0;
4656 }
4657
ieee80211_del_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer)4658 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4659 u8 tsid, const u8 *peer)
4660 {
4661 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4662 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4663 struct ieee80211_local *local = wiphy_priv(wiphy);
4664 int ac;
4665
4666 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4667 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4668
4669 /* skip unused entries */
4670 if (!tx_tspec->admitted_time)
4671 continue;
4672
4673 if (tx_tspec->tsid != tsid)
4674 continue;
4675
4676 /* due to this new packets will be reassigned to non-ACM ACs */
4677 tx_tspec->up = -1;
4678
4679 /* Make sure that all packets have been sent to avoid to
4680 * restore the QoS params on packets that are still on the
4681 * queues.
4682 */
4683 synchronize_net();
4684 ieee80211_flush_queues(local, sdata, false);
4685
4686 /* restore the normal QoS parameters
4687 * (unconditionally to avoid races)
4688 */
4689 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4690 tx_tspec->downgraded = false;
4691 ieee80211_sta_handle_tspec_ac_params(sdata);
4692
4693 /* finally clear all the data */
4694 memset(tx_tspec, 0, sizeof(*tx_tspec));
4695
4696 return 0;
4697 }
4698
4699 return -ENOENT;
4700 }
4701
ieee80211_nan_func_terminated(struct ieee80211_vif * vif,u8 inst_id,enum nl80211_nan_func_term_reason reason,gfp_t gfp)4702 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4703 u8 inst_id,
4704 enum nl80211_nan_func_term_reason reason,
4705 gfp_t gfp)
4706 {
4707 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4708 struct cfg80211_nan_func *func;
4709 u64 cookie;
4710
4711 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4712 return;
4713
4714 spin_lock_bh(&sdata->u.nan.func_lock);
4715
4716 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4717 if (WARN_ON(!func)) {
4718 spin_unlock_bh(&sdata->u.nan.func_lock);
4719 return;
4720 }
4721
4722 cookie = func->cookie;
4723 idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4724
4725 spin_unlock_bh(&sdata->u.nan.func_lock);
4726
4727 cfg80211_free_nan_func(func);
4728
4729 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4730 reason, cookie, gfp);
4731 }
4732 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4733
ieee80211_nan_func_match(struct ieee80211_vif * vif,struct cfg80211_nan_match_params * match,gfp_t gfp)4734 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4735 struct cfg80211_nan_match_params *match,
4736 gfp_t gfp)
4737 {
4738 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4739 struct cfg80211_nan_func *func;
4740
4741 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4742 return;
4743
4744 spin_lock_bh(&sdata->u.nan.func_lock);
4745
4746 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id);
4747 if (WARN_ON(!func)) {
4748 spin_unlock_bh(&sdata->u.nan.func_lock);
4749 return;
4750 }
4751 match->cookie = func->cookie;
4752
4753 spin_unlock_bh(&sdata->u.nan.func_lock);
4754
4755 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4756 }
4757 EXPORT_SYMBOL(ieee80211_nan_func_match);
4758
ieee80211_set_multicast_to_unicast(struct wiphy * wiphy,struct net_device * dev,const bool enabled)4759 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4760 struct net_device *dev,
4761 const bool enabled)
4762 {
4763 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4764
4765 sdata->u.ap.multicast_to_unicast = enabled;
4766
4767 return 0;
4768 }
4769
ieee80211_fill_txq_stats(struct cfg80211_txq_stats * txqstats,struct txq_info * txqi)4770 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4771 struct txq_info *txqi)
4772 {
4773 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4774 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4775 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4776 }
4777
4778 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4779 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4780 txqstats->backlog_packets = txqi->tin.backlog_packets;
4781 }
4782
4783 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4784 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4785 txqstats->flows = txqi->tin.flows;
4786 }
4787
4788 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4789 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4790 txqstats->drops = txqi->cstats.drop_count;
4791 }
4792
4793 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4794 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4795 txqstats->ecn_marks = txqi->cstats.ecn_mark;
4796 }
4797
4798 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4799 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4800 txqstats->overlimit = txqi->tin.overlimit;
4801 }
4802
4803 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4804 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4805 txqstats->collisions = txqi->tin.collisions;
4806 }
4807
4808 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4809 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4810 txqstats->tx_bytes = txqi->tin.tx_bytes;
4811 }
4812
4813 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4814 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4815 txqstats->tx_packets = txqi->tin.tx_packets;
4816 }
4817 }
4818
ieee80211_get_txq_stats(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_txq_stats * txqstats)4819 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4820 struct wireless_dev *wdev,
4821 struct cfg80211_txq_stats *txqstats)
4822 {
4823 struct ieee80211_local *local = wiphy_priv(wiphy);
4824 struct ieee80211_sub_if_data *sdata;
4825 int ret = 0;
4826
4827 spin_lock_bh(&local->fq.lock);
4828 rcu_read_lock();
4829
4830 if (wdev) {
4831 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4832 if (!sdata->vif.txq) {
4833 ret = 1;
4834 goto out;
4835 }
4836 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4837 } else {
4838 /* phy stats */
4839 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4840 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4841 BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4842 BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4843 BIT(NL80211_TXQ_STATS_COLLISIONS) |
4844 BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4845 txqstats->backlog_packets = local->fq.backlog;
4846 txqstats->backlog_bytes = local->fq.memory_usage;
4847 txqstats->overlimit = local->fq.overlimit;
4848 txqstats->overmemory = local->fq.overmemory;
4849 txqstats->collisions = local->fq.collisions;
4850 txqstats->max_flows = local->fq.flows_cnt;
4851 }
4852
4853 out:
4854 rcu_read_unlock();
4855 spin_unlock_bh(&local->fq.lock);
4856
4857 return ret;
4858 }
4859
4860 static int
ieee80211_get_ftm_responder_stats(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ftm_responder_stats * ftm_stats)4861 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4862 struct net_device *dev,
4863 struct cfg80211_ftm_responder_stats *ftm_stats)
4864 {
4865 struct ieee80211_local *local = wiphy_priv(wiphy);
4866 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4867
4868 return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4869 }
4870
4871 static int
ieee80211_start_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4872 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4873 struct cfg80211_pmsr_request *request)
4874 {
4875 struct ieee80211_local *local = wiphy_priv(wiphy);
4876 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4877
4878 return drv_start_pmsr(local, sdata, request);
4879 }
4880
4881 static void
ieee80211_abort_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4882 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4883 struct cfg80211_pmsr_request *request)
4884 {
4885 struct ieee80211_local *local = wiphy_priv(wiphy);
4886 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4887
4888 return drv_abort_pmsr(local, sdata, request);
4889 }
4890
ieee80211_set_tid_config(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_tid_config * tid_conf)4891 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4892 struct net_device *dev,
4893 struct cfg80211_tid_config *tid_conf)
4894 {
4895 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4896 struct sta_info *sta;
4897
4898 lockdep_assert_wiphy(sdata->local->hw.wiphy);
4899
4900 if (!sdata->local->ops->set_tid_config)
4901 return -EOPNOTSUPP;
4902
4903 if (!tid_conf->peer)
4904 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4905
4906 sta = sta_info_get_bss(sdata, tid_conf->peer);
4907 if (!sta)
4908 return -ENOENT;
4909
4910 return drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4911 }
4912
ieee80211_reset_tid_config(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u8 tids)4913 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4914 struct net_device *dev,
4915 const u8 *peer, u8 tids)
4916 {
4917 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4918 struct sta_info *sta;
4919
4920 lockdep_assert_wiphy(sdata->local->hw.wiphy);
4921
4922 if (!sdata->local->ops->reset_tid_config)
4923 return -EOPNOTSUPP;
4924
4925 if (!peer)
4926 return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4927
4928 sta = sta_info_get_bss(sdata, peer);
4929 if (!sta)
4930 return -ENOENT;
4931
4932 return drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4933 }
4934
ieee80211_set_sar_specs(struct wiphy * wiphy,struct cfg80211_sar_specs * sar)4935 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4936 struct cfg80211_sar_specs *sar)
4937 {
4938 struct ieee80211_local *local = wiphy_priv(wiphy);
4939
4940 if (!local->ops->set_sar_specs)
4941 return -EOPNOTSUPP;
4942
4943 return local->ops->set_sar_specs(&local->hw, sar);
4944 }
4945
4946 static int
ieee80211_set_after_color_change_beacon(struct ieee80211_link_data * link,u64 * changed)4947 ieee80211_set_after_color_change_beacon(struct ieee80211_link_data *link,
4948 u64 *changed)
4949 {
4950 struct ieee80211_sub_if_data *sdata = link->sdata;
4951
4952 switch (sdata->vif.type) {
4953 case NL80211_IFTYPE_AP: {
4954 int ret;
4955
4956 if (!link->u.ap.next_beacon)
4957 return -EINVAL;
4958
4959 ret = ieee80211_assign_beacon(sdata, link,
4960 link->u.ap.next_beacon,
4961 NULL, NULL, changed);
4962 ieee80211_free_next_beacon(link);
4963
4964 if (ret < 0)
4965 return ret;
4966
4967 break;
4968 }
4969 default:
4970 WARN_ON_ONCE(1);
4971 return -EINVAL;
4972 }
4973
4974 return 0;
4975 }
4976
4977 static int
ieee80211_set_color_change_beacon(struct ieee80211_link_data * link,struct cfg80211_color_change_settings * params,u64 * changed)4978 ieee80211_set_color_change_beacon(struct ieee80211_link_data *link,
4979 struct cfg80211_color_change_settings *params,
4980 u64 *changed)
4981 {
4982 struct ieee80211_sub_if_data *sdata = link->sdata;
4983 struct ieee80211_color_change_settings color_change = {};
4984 int err;
4985
4986 switch (sdata->vif.type) {
4987 case NL80211_IFTYPE_AP:
4988 link->u.ap.next_beacon =
4989 cfg80211_beacon_dup(¶ms->beacon_next);
4990 if (!link->u.ap.next_beacon)
4991 return -ENOMEM;
4992
4993 if (params->count <= 1)
4994 break;
4995
4996 color_change.counter_offset_beacon =
4997 params->counter_offset_beacon;
4998 color_change.counter_offset_presp =
4999 params->counter_offset_presp;
5000 color_change.count = params->count;
5001
5002 err = ieee80211_assign_beacon(sdata, link,
5003 ¶ms->beacon_color_change,
5004 NULL, &color_change, changed);
5005 if (err < 0) {
5006 ieee80211_free_next_beacon(link);
5007 return err;
5008 }
5009 break;
5010 default:
5011 return -EOPNOTSUPP;
5012 }
5013
5014 return 0;
5015 }
5016
5017 static void
ieee80211_color_change_bss_config_notify(struct ieee80211_link_data * link,u8 color,int enable,u64 changed)5018 ieee80211_color_change_bss_config_notify(struct ieee80211_link_data *link,
5019 u8 color, int enable, u64 changed)
5020 {
5021 struct ieee80211_sub_if_data *sdata = link->sdata;
5022
5023 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5024
5025 link->conf->he_bss_color.color = color;
5026 link->conf->he_bss_color.enabled = enable;
5027 changed |= BSS_CHANGED_HE_BSS_COLOR;
5028
5029 ieee80211_link_info_change_notify(sdata, link, changed);
5030
5031 if (!link->conf->nontransmitted &&
5032 rcu_access_pointer(link->conf->tx_bss_conf)) {
5033 struct ieee80211_link_data *tmp;
5034
5035 for_each_sdata_link(sdata->local, tmp) {
5036 if (tmp->sdata == sdata ||
5037 rcu_access_pointer(tmp->conf->tx_bss_conf) != link->conf)
5038 continue;
5039
5040 tmp->conf->he_bss_color.color = color;
5041 tmp->conf->he_bss_color.enabled = enable;
5042 ieee80211_link_info_change_notify(tmp->sdata, tmp,
5043 BSS_CHANGED_HE_BSS_COLOR);
5044 }
5045 }
5046 }
5047
ieee80211_color_change_finalize(struct ieee80211_link_data * link)5048 static int ieee80211_color_change_finalize(struct ieee80211_link_data *link)
5049 {
5050 struct ieee80211_sub_if_data *sdata = link->sdata;
5051 struct ieee80211_local *local = sdata->local;
5052 u64 changed = 0;
5053 int err;
5054
5055 lockdep_assert_wiphy(local->hw.wiphy);
5056
5057 link->conf->color_change_active = false;
5058
5059 err = ieee80211_set_after_color_change_beacon(link, &changed);
5060 if (err) {
5061 cfg80211_color_change_aborted_notify(sdata->dev, link->link_id);
5062 return err;
5063 }
5064
5065 ieee80211_color_change_bss_config_notify(link,
5066 link->conf->color_change_color,
5067 1, changed);
5068 cfg80211_color_change_notify(sdata->dev, link->link_id);
5069
5070 return 0;
5071 }
5072
ieee80211_color_change_finalize_work(struct wiphy * wiphy,struct wiphy_work * work)5073 void ieee80211_color_change_finalize_work(struct wiphy *wiphy,
5074 struct wiphy_work *work)
5075 {
5076 struct ieee80211_link_data *link =
5077 container_of(work, struct ieee80211_link_data,
5078 color_change_finalize_work);
5079 struct ieee80211_sub_if_data *sdata = link->sdata;
5080 struct ieee80211_bss_conf *link_conf = link->conf;
5081 struct ieee80211_local *local = sdata->local;
5082
5083 lockdep_assert_wiphy(local->hw.wiphy);
5084
5085 /* AP might have been stopped while waiting for the lock. */
5086 if (!link_conf->color_change_active)
5087 return;
5088
5089 if (!ieee80211_sdata_running(sdata))
5090 return;
5091
5092 ieee80211_color_change_finalize(link);
5093 }
5094
ieee80211_color_collision_detection_work(struct wiphy * wiphy,struct wiphy_work * work)5095 void ieee80211_color_collision_detection_work(struct wiphy *wiphy,
5096 struct wiphy_work *work)
5097 {
5098 struct ieee80211_link_data *link =
5099 container_of(work, struct ieee80211_link_data,
5100 color_collision_detect_work.work);
5101 struct ieee80211_sub_if_data *sdata = link->sdata;
5102
5103 cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap,
5104 link->link_id);
5105 }
5106
ieee80211_color_change_finish(struct ieee80211_vif * vif,u8 link_id)5107 void ieee80211_color_change_finish(struct ieee80211_vif *vif, u8 link_id)
5108 {
5109 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5110 struct ieee80211_link_data *link;
5111
5112 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
5113 return;
5114
5115 rcu_read_lock();
5116
5117 link = rcu_dereference(sdata->link[link_id]);
5118 if (WARN_ON(!link)) {
5119 rcu_read_unlock();
5120 return;
5121 }
5122
5123 wiphy_work_queue(sdata->local->hw.wiphy,
5124 &link->color_change_finalize_work);
5125
5126 rcu_read_unlock();
5127 }
5128 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
5129
5130 void
ieee80211_obss_color_collision_notify(struct ieee80211_vif * vif,u64 color_bitmap,u8 link_id)5131 ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
5132 u64 color_bitmap, u8 link_id)
5133 {
5134 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
5135 struct ieee80211_link_data *link;
5136
5137 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
5138 return;
5139
5140 rcu_read_lock();
5141
5142 link = rcu_dereference(sdata->link[link_id]);
5143 if (WARN_ON(!link)) {
5144 rcu_read_unlock();
5145 return;
5146 }
5147
5148 if (link->conf->color_change_active || link->conf->csa_active) {
5149 rcu_read_unlock();
5150 return;
5151 }
5152
5153 if (wiphy_delayed_work_pending(sdata->local->hw.wiphy,
5154 &link->color_collision_detect_work)) {
5155 rcu_read_unlock();
5156 return;
5157 }
5158
5159 link->color_bitmap = color_bitmap;
5160 /* queue the color collision detection event every 500 ms in order to
5161 * avoid sending too much netlink messages to userspace.
5162 */
5163 wiphy_delayed_work_queue(sdata->local->hw.wiphy,
5164 &link->color_collision_detect_work,
5165 msecs_to_jiffies(500));
5166
5167 rcu_read_unlock();
5168 }
5169 EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify);
5170
5171 static int
ieee80211_color_change(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_color_change_settings * params)5172 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
5173 struct cfg80211_color_change_settings *params)
5174 {
5175 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5176 struct ieee80211_local *local = sdata->local;
5177 struct ieee80211_bss_conf *link_conf;
5178 struct ieee80211_link_data *link;
5179 u8 link_id = params->link_id;
5180 u64 changed = 0;
5181 int err;
5182
5183 lockdep_assert_wiphy(local->hw.wiphy);
5184
5185 if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS))
5186 return -EINVAL;
5187
5188 link = wiphy_dereference(wiphy, sdata->link[link_id]);
5189 if (!link)
5190 return -ENOLINK;
5191
5192 link_conf = link->conf;
5193
5194 if (link_conf->nontransmitted)
5195 return -EINVAL;
5196
5197 /* don't allow another color change if one is already active or if csa
5198 * is active
5199 */
5200 if (link_conf->color_change_active || link_conf->csa_active) {
5201 err = -EBUSY;
5202 goto out;
5203 }
5204
5205 err = ieee80211_set_unsol_bcast_probe_resp(sdata,
5206 ¶ms->unsol_bcast_probe_resp,
5207 link, link_conf, &changed);
5208 if (err)
5209 goto out;
5210
5211 err = ieee80211_set_color_change_beacon(link, params, &changed);
5212 if (err)
5213 goto out;
5214
5215 link_conf->color_change_active = true;
5216 link_conf->color_change_color = params->color;
5217
5218 cfg80211_color_change_started_notify(sdata->dev, params->count, link_id);
5219
5220 if (changed)
5221 ieee80211_color_change_bss_config_notify(link, 0, 0, changed);
5222 else
5223 /* if the beacon didn't change, we can finalize immediately */
5224 ieee80211_color_change_finalize(link);
5225
5226 out:
5227
5228 return err;
5229 }
5230
5231 static int
ieee80211_set_radar_background(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)5232 ieee80211_set_radar_background(struct wiphy *wiphy,
5233 struct cfg80211_chan_def *chandef)
5234 {
5235 struct ieee80211_local *local = wiphy_priv(wiphy);
5236
5237 if (!local->ops->set_radar_background)
5238 return -EOPNOTSUPP;
5239
5240 return local->ops->set_radar_background(&local->hw, chandef);
5241 }
5242
ieee80211_add_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)5243 static int ieee80211_add_intf_link(struct wiphy *wiphy,
5244 struct wireless_dev *wdev,
5245 unsigned int link_id)
5246 {
5247 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
5248
5249 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5250
5251 if (wdev->use_4addr)
5252 return -EOPNOTSUPP;
5253
5254 return ieee80211_vif_set_links(sdata, wdev->valid_links, 0);
5255 }
5256
ieee80211_del_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)5257 static void ieee80211_del_intf_link(struct wiphy *wiphy,
5258 struct wireless_dev *wdev,
5259 unsigned int link_id)
5260 {
5261 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
5262 u16 new_links = wdev->valid_links & ~BIT(link_id);
5263
5264 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5265
5266 /* During the link teardown process, certain functions require the
5267 * link_id to remain in the valid_links bitmap. Therefore, instead
5268 * of removing the link_id from the bitmap, pass a masked value to
5269 * simulate as if link_id does not exist anymore.
5270 */
5271 ieee80211_vif_set_links(sdata, new_links, 0);
5272 }
5273
5274 static int
ieee80211_add_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)5275 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
5276 struct link_station_parameters *params)
5277 {
5278 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5279 struct ieee80211_local *local = wiphy_priv(wiphy);
5280 struct sta_info *sta;
5281 int ret;
5282
5283 lockdep_assert_wiphy(local->hw.wiphy);
5284
5285 sta = sta_info_get_bss(sdata, params->mld_mac);
5286 if (!sta)
5287 return -ENOENT;
5288
5289 if (!sta->sta.valid_links)
5290 return -EINVAL;
5291
5292 if (sta->sta.valid_links & BIT(params->link_id))
5293 return -EALREADY;
5294
5295 ret = ieee80211_sta_allocate_link(sta, params->link_id);
5296 if (ret)
5297 return ret;
5298
5299 ret = sta_link_apply_parameters(local, sta, STA_LINK_MODE_NEW, params);
5300 if (ret) {
5301 ieee80211_sta_free_link(sta, params->link_id);
5302 return ret;
5303 }
5304
5305 if (test_sta_flag(sta, WLAN_STA_ASSOC)) {
5306 struct link_sta_info *link_sta;
5307
5308 link_sta = sdata_dereference(sta->link[params->link_id], sdata);
5309 rate_control_rate_init(link_sta);
5310 }
5311
5312 /* ieee80211_sta_activate_link frees the link upon failure */
5313 return ieee80211_sta_activate_link(sta, params->link_id);
5314 }
5315
5316 static int
ieee80211_mod_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)5317 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
5318 struct link_station_parameters *params)
5319 {
5320 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5321 struct ieee80211_local *local = wiphy_priv(wiphy);
5322 struct sta_info *sta;
5323
5324 lockdep_assert_wiphy(local->hw.wiphy);
5325
5326 sta = sta_info_get_bss(sdata, params->mld_mac);
5327 if (!sta)
5328 return -ENOENT;
5329
5330 if (!(sta->sta.valid_links & BIT(params->link_id)))
5331 return -EINVAL;
5332
5333 return sta_link_apply_parameters(local, sta, STA_LINK_MODE_LINK_MODIFY,
5334 params);
5335 }
5336
5337 static int
ieee80211_del_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_del_parameters * params)5338 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
5339 struct link_station_del_parameters *params)
5340 {
5341 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5342 struct sta_info *sta;
5343
5344 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5345
5346 sta = sta_info_get_bss(sdata, params->mld_mac);
5347 if (!sta)
5348 return -ENOENT;
5349
5350 if (!(sta->sta.valid_links & BIT(params->link_id)))
5351 return -EINVAL;
5352
5353 /* must not create a STA without links */
5354 if (sta->sta.valid_links == BIT(params->link_id))
5355 return -EINVAL;
5356
5357 ieee80211_sta_remove_link(sta, params->link_id);
5358
5359 return 0;
5360 }
5361
ieee80211_set_hw_timestamp(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_set_hw_timestamp * hwts)5362 static int ieee80211_set_hw_timestamp(struct wiphy *wiphy,
5363 struct net_device *dev,
5364 struct cfg80211_set_hw_timestamp *hwts)
5365 {
5366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5367 struct ieee80211_local *local = sdata->local;
5368
5369 if (!local->ops->set_hw_timestamp)
5370 return -EOPNOTSUPP;
5371
5372 if (!check_sdata_in_driver(sdata))
5373 return -EIO;
5374
5375 return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts);
5376 }
5377
5378 static int
ieee80211_set_ttlm(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ttlm_params * params)5379 ieee80211_set_ttlm(struct wiphy *wiphy, struct net_device *dev,
5380 struct cfg80211_ttlm_params *params)
5381 {
5382 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5383
5384 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5385
5386 return ieee80211_req_neg_ttlm(sdata, params);
5387 }
5388
5389 static int
ieee80211_assoc_ml_reconf(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ml_reconf_req * req)5390 ieee80211_assoc_ml_reconf(struct wiphy *wiphy, struct net_device *dev,
5391 struct cfg80211_ml_reconf_req *req)
5392 {
5393 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5394
5395 lockdep_assert_wiphy(sdata->local->hw.wiphy);
5396
5397 return ieee80211_mgd_assoc_ml_reconf(sdata, req);
5398 }
5399
5400 static int
ieee80211_set_epcs(struct wiphy * wiphy,struct net_device * dev,bool enable)5401 ieee80211_set_epcs(struct wiphy *wiphy, struct net_device *dev, bool enable)
5402 {
5403 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5404
5405 return ieee80211_mgd_set_epcs(sdata, enable);
5406 }
5407
5408 const struct cfg80211_ops mac80211_config_ops = {
5409 .add_virtual_intf = ieee80211_add_iface,
5410 .del_virtual_intf = ieee80211_del_iface,
5411 .change_virtual_intf = ieee80211_change_iface,
5412 .start_p2p_device = ieee80211_start_p2p_device,
5413 .stop_p2p_device = ieee80211_stop_p2p_device,
5414 .add_key = ieee80211_add_key,
5415 .del_key = ieee80211_del_key,
5416 .get_key = ieee80211_get_key,
5417 .set_default_key = ieee80211_config_default_key,
5418 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
5419 .set_default_beacon_key = ieee80211_config_default_beacon_key,
5420 .start_ap = ieee80211_start_ap,
5421 .change_beacon = ieee80211_change_beacon,
5422 .stop_ap = ieee80211_stop_ap,
5423 .add_station = ieee80211_add_station,
5424 .del_station = ieee80211_del_station,
5425 .change_station = ieee80211_change_station,
5426 .get_station = ieee80211_get_station,
5427 .dump_station = ieee80211_dump_station,
5428 .dump_survey = ieee80211_dump_survey,
5429 #ifdef CONFIG_MAC80211_MESH
5430 .add_mpath = ieee80211_add_mpath,
5431 .del_mpath = ieee80211_del_mpath,
5432 .change_mpath = ieee80211_change_mpath,
5433 .get_mpath = ieee80211_get_mpath,
5434 .dump_mpath = ieee80211_dump_mpath,
5435 .get_mpp = ieee80211_get_mpp,
5436 .dump_mpp = ieee80211_dump_mpp,
5437 .update_mesh_config = ieee80211_update_mesh_config,
5438 .get_mesh_config = ieee80211_get_mesh_config,
5439 .join_mesh = ieee80211_join_mesh,
5440 .leave_mesh = ieee80211_leave_mesh,
5441 #endif
5442 .join_ocb = ieee80211_join_ocb,
5443 .leave_ocb = ieee80211_leave_ocb,
5444 .change_bss = ieee80211_change_bss,
5445 .inform_bss = ieee80211_inform_bss,
5446 .set_txq_params = ieee80211_set_txq_params,
5447 .set_monitor_channel = ieee80211_set_monitor_channel,
5448 .suspend = ieee80211_suspend,
5449 .resume = ieee80211_resume,
5450 .scan = ieee80211_scan,
5451 .abort_scan = ieee80211_abort_scan,
5452 .sched_scan_start = ieee80211_sched_scan_start,
5453 .sched_scan_stop = ieee80211_sched_scan_stop,
5454 .auth = ieee80211_auth,
5455 .assoc = ieee80211_assoc,
5456 .deauth = ieee80211_deauth,
5457 .disassoc = ieee80211_disassoc,
5458 .join_ibss = ieee80211_join_ibss,
5459 .leave_ibss = ieee80211_leave_ibss,
5460 .set_mcast_rate = ieee80211_set_mcast_rate,
5461 .set_wiphy_params = ieee80211_set_wiphy_params,
5462 .set_tx_power = ieee80211_set_tx_power,
5463 .get_tx_power = ieee80211_get_tx_power,
5464 .rfkill_poll = ieee80211_rfkill_poll,
5465 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
5466 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
5467 .set_power_mgmt = ieee80211_set_power_mgmt,
5468 .set_bitrate_mask = ieee80211_set_bitrate_mask,
5469 .remain_on_channel = ieee80211_remain_on_channel,
5470 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
5471 .mgmt_tx = ieee80211_mgmt_tx,
5472 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
5473 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
5474 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
5475 .update_mgmt_frame_registrations =
5476 ieee80211_update_mgmt_frame_registrations,
5477 .set_antenna = ieee80211_set_antenna,
5478 .get_antenna = ieee80211_get_antenna,
5479 .set_rekey_data = ieee80211_set_rekey_data,
5480 .tdls_oper = ieee80211_tdls_oper,
5481 .tdls_mgmt = ieee80211_tdls_mgmt,
5482 .tdls_channel_switch = ieee80211_tdls_channel_switch,
5483 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
5484 .probe_client = ieee80211_probe_client,
5485 .set_noack_map = ieee80211_set_noack_map,
5486 #ifdef CONFIG_PM
5487 .set_wakeup = ieee80211_set_wakeup,
5488 #endif
5489 .get_channel = ieee80211_cfg_get_channel,
5490 .start_radar_detection = ieee80211_start_radar_detection,
5491 .end_cac = ieee80211_end_cac,
5492 .channel_switch = ieee80211_channel_switch,
5493 .set_qos_map = ieee80211_set_qos_map,
5494 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
5495 .add_tx_ts = ieee80211_add_tx_ts,
5496 .del_tx_ts = ieee80211_del_tx_ts,
5497 .start_nan = ieee80211_start_nan,
5498 .stop_nan = ieee80211_stop_nan,
5499 .nan_change_conf = ieee80211_nan_change_conf,
5500 .add_nan_func = ieee80211_add_nan_func,
5501 .del_nan_func = ieee80211_del_nan_func,
5502 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
5503 .tx_control_port = ieee80211_tx_control_port,
5504 .get_txq_stats = ieee80211_get_txq_stats,
5505 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
5506 .start_pmsr = ieee80211_start_pmsr,
5507 .abort_pmsr = ieee80211_abort_pmsr,
5508 .probe_mesh_link = ieee80211_probe_mesh_link,
5509 .set_tid_config = ieee80211_set_tid_config,
5510 .reset_tid_config = ieee80211_reset_tid_config,
5511 .set_sar_specs = ieee80211_set_sar_specs,
5512 .color_change = ieee80211_color_change,
5513 .set_radar_background = ieee80211_set_radar_background,
5514 .add_intf_link = ieee80211_add_intf_link,
5515 .del_intf_link = ieee80211_del_intf_link,
5516 .add_link_station = ieee80211_add_link_station,
5517 .mod_link_station = ieee80211_mod_link_station,
5518 .del_link_station = ieee80211_del_link_station,
5519 .set_hw_timestamp = ieee80211_set_hw_timestamp,
5520 .set_ttlm = ieee80211_set_ttlm,
5521 .get_radio_mask = ieee80211_get_radio_mask,
5522 .assoc_ml_reconf = ieee80211_assoc_ml_reconf,
5523 .set_epcs = ieee80211_set_epcs,
5524 };
5525