xref: /openbmc/linux/net/mac80211/cfg.c (revision 86e7bdc5)
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) 2018-2022 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_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
93 
94 		/*
95 		 * Prohibit MONITOR_FLAG_COOK_FRAMES and
96 		 * MONITOR_FLAG_ACTIVE to be changed while the
97 		 * interface is up.
98 		 * Else we would need to add a lot of cruft
99 		 * to update everything:
100 		 *	cooked_mntrs, monitor and all fif_* counters
101 		 *	reconfigure hardware
102 		 */
103 		if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
104 			return -EBUSY;
105 	}
106 
107 	/* also validate MU-MIMO change */
108 	monitor_sdata = wiphy_dereference(local->hw.wiphy,
109 					  local->monitor_sdata);
110 
111 	if (!monitor_sdata &&
112 	    (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
113 		return -EOPNOTSUPP;
114 
115 	/* apply all changes now - no failures allowed */
116 
117 	if (monitor_sdata)
118 		ieee80211_set_mu_mimo_follow(monitor_sdata, params);
119 
120 	if (params->flags) {
121 		if (ieee80211_sdata_running(sdata)) {
122 			ieee80211_adjust_monitor_flags(sdata, -1);
123 			sdata->u.mntr.flags = params->flags;
124 			ieee80211_adjust_monitor_flags(sdata, 1);
125 
126 			ieee80211_configure_filter(local);
127 		} else {
128 			/*
129 			 * Because the interface is down, ieee80211_do_stop
130 			 * and ieee80211_do_open take care of "everything"
131 			 * mentioned in the comment above.
132 			 */
133 			sdata->u.mntr.flags = params->flags;
134 		}
135 	}
136 
137 	return 0;
138 }
139 
ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data * sdata,struct cfg80211_mbssid_config params,struct ieee80211_bss_conf * link_conf)140 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata,
141 					   struct cfg80211_mbssid_config params,
142 					   struct ieee80211_bss_conf *link_conf)
143 {
144 	struct ieee80211_sub_if_data *tx_sdata;
145 
146 	sdata->vif.mbssid_tx_vif = NULL;
147 	link_conf->bssid_index = 0;
148 	link_conf->nontransmitted = false;
149 	link_conf->ema_ap = false;
150 	link_conf->bssid_indicator = 0;
151 
152 	if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev)
153 		return -EINVAL;
154 
155 	tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev);
156 	if (!tx_sdata)
157 		return -EINVAL;
158 
159 	if (tx_sdata == sdata) {
160 		sdata->vif.mbssid_tx_vif = &sdata->vif;
161 	} else {
162 		sdata->vif.mbssid_tx_vif = &tx_sdata->vif;
163 		link_conf->nontransmitted = true;
164 		link_conf->bssid_index = params.index;
165 	}
166 	if (params.ema)
167 		link_conf->ema_ap = true;
168 
169 	return 0;
170 }
171 
ieee80211_add_iface(struct wiphy * wiphy,const char * name,unsigned char name_assign_type,enum nl80211_iftype type,struct vif_params * params)172 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
173 						const char *name,
174 						unsigned char name_assign_type,
175 						enum nl80211_iftype type,
176 						struct vif_params *params)
177 {
178 	struct ieee80211_local *local = wiphy_priv(wiphy);
179 	struct wireless_dev *wdev;
180 	struct ieee80211_sub_if_data *sdata;
181 	int err;
182 
183 	err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
184 	if (err)
185 		return ERR_PTR(err);
186 
187 	sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
188 
189 	if (type == NL80211_IFTYPE_MONITOR) {
190 		err = ieee80211_set_mon_options(sdata, params);
191 		if (err) {
192 			ieee80211_if_remove(sdata);
193 			return NULL;
194 		}
195 	}
196 
197 	return wdev;
198 }
199 
ieee80211_del_iface(struct wiphy * wiphy,struct wireless_dev * wdev)200 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
201 {
202 	ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
203 
204 	return 0;
205 }
206 
ieee80211_change_iface(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)207 static int ieee80211_change_iface(struct wiphy *wiphy,
208 				  struct net_device *dev,
209 				  enum nl80211_iftype type,
210 				  struct vif_params *params)
211 {
212 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
213 	struct ieee80211_local *local = sdata->local;
214 	struct sta_info *sta;
215 	int ret;
216 
217 	ret = ieee80211_if_change_type(sdata, type);
218 	if (ret)
219 		return ret;
220 
221 	if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
222 		RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
223 		ieee80211_check_fast_rx_iface(sdata);
224 	} else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
225 		struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
226 
227 		if (params->use_4addr == ifmgd->use_4addr)
228 			return 0;
229 
230 		/* FIXME: no support for 4-addr MLO yet */
231 		if (ieee80211_vif_is_mld(&sdata->vif))
232 			return -EOPNOTSUPP;
233 
234 		sdata->u.mgd.use_4addr = params->use_4addr;
235 		if (!ifmgd->associated)
236 			return 0;
237 
238 		mutex_lock(&local->sta_mtx);
239 		sta = sta_info_get(sdata, sdata->deflink.u.mgd.bssid);
240 		if (sta)
241 			drv_sta_set_4addr(local, sdata, &sta->sta,
242 					  params->use_4addr);
243 		mutex_unlock(&local->sta_mtx);
244 
245 		if (params->use_4addr)
246 			ieee80211_send_4addr_nullfunc(local, sdata);
247 	}
248 
249 	if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
250 		ret = ieee80211_set_mon_options(sdata, params);
251 		if (ret)
252 			return ret;
253 	}
254 
255 	return 0;
256 }
257 
ieee80211_start_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)258 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
259 				      struct wireless_dev *wdev)
260 {
261 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
262 	int ret;
263 
264 	mutex_lock(&sdata->local->chanctx_mtx);
265 	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
266 	mutex_unlock(&sdata->local->chanctx_mtx);
267 	if (ret < 0)
268 		return ret;
269 
270 	return ieee80211_do_open(wdev, true);
271 }
272 
ieee80211_stop_p2p_device(struct wiphy * wiphy,struct wireless_dev * wdev)273 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
274 				      struct wireless_dev *wdev)
275 {
276 	ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
277 }
278 
ieee80211_start_nan(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf)279 static int ieee80211_start_nan(struct wiphy *wiphy,
280 			       struct wireless_dev *wdev,
281 			       struct cfg80211_nan_conf *conf)
282 {
283 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
284 	int ret;
285 
286 	mutex_lock(&sdata->local->chanctx_mtx);
287 	ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
288 	mutex_unlock(&sdata->local->chanctx_mtx);
289 	if (ret < 0)
290 		return ret;
291 
292 	ret = ieee80211_do_open(wdev, true);
293 	if (ret)
294 		return ret;
295 
296 	ret = drv_start_nan(sdata->local, sdata, conf);
297 	if (ret)
298 		ieee80211_sdata_stop(sdata);
299 
300 	sdata->u.nan.conf = *conf;
301 
302 	return ret;
303 }
304 
ieee80211_stop_nan(struct wiphy * wiphy,struct wireless_dev * wdev)305 static void ieee80211_stop_nan(struct wiphy *wiphy,
306 			       struct wireless_dev *wdev)
307 {
308 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
309 
310 	drv_stop_nan(sdata->local, sdata);
311 	ieee80211_sdata_stop(sdata);
312 }
313 
ieee80211_nan_change_conf(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_conf * conf,u32 changes)314 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
315 				     struct wireless_dev *wdev,
316 				     struct cfg80211_nan_conf *conf,
317 				     u32 changes)
318 {
319 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
320 	struct cfg80211_nan_conf new_conf;
321 	int ret = 0;
322 
323 	if (sdata->vif.type != NL80211_IFTYPE_NAN)
324 		return -EOPNOTSUPP;
325 
326 	if (!ieee80211_sdata_running(sdata))
327 		return -ENETDOWN;
328 
329 	new_conf = sdata->u.nan.conf;
330 
331 	if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
332 		new_conf.master_pref = conf->master_pref;
333 
334 	if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
335 		new_conf.bands = conf->bands;
336 
337 	ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
338 	if (!ret)
339 		sdata->u.nan.conf = new_conf;
340 
341 	return ret;
342 }
343 
ieee80211_add_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_nan_func * nan_func)344 static int ieee80211_add_nan_func(struct wiphy *wiphy,
345 				  struct wireless_dev *wdev,
346 				  struct cfg80211_nan_func *nan_func)
347 {
348 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
349 	int ret;
350 
351 	if (sdata->vif.type != NL80211_IFTYPE_NAN)
352 		return -EOPNOTSUPP;
353 
354 	if (!ieee80211_sdata_running(sdata))
355 		return -ENETDOWN;
356 
357 	spin_lock_bh(&sdata->u.nan.func_lock);
358 
359 	ret = idr_alloc(&sdata->u.nan.function_inst_ids,
360 			nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
361 			GFP_ATOMIC);
362 	spin_unlock_bh(&sdata->u.nan.func_lock);
363 
364 	if (ret < 0)
365 		return ret;
366 
367 	nan_func->instance_id = ret;
368 
369 	WARN_ON(nan_func->instance_id == 0);
370 
371 	ret = drv_add_nan_func(sdata->local, sdata, nan_func);
372 	if (ret) {
373 		spin_lock_bh(&sdata->u.nan.func_lock);
374 		idr_remove(&sdata->u.nan.function_inst_ids,
375 			   nan_func->instance_id);
376 		spin_unlock_bh(&sdata->u.nan.func_lock);
377 	}
378 
379 	return ret;
380 }
381 
382 static struct cfg80211_nan_func *
ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data * sdata,u64 cookie)383 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
384 				  u64 cookie)
385 {
386 	struct cfg80211_nan_func *func;
387 	int id;
388 
389 	lockdep_assert_held(&sdata->u.nan.func_lock);
390 
391 	idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
392 		if (func->cookie == cookie)
393 			return func;
394 	}
395 
396 	return NULL;
397 }
398 
ieee80211_del_nan_func(struct wiphy * wiphy,struct wireless_dev * wdev,u64 cookie)399 static void ieee80211_del_nan_func(struct wiphy *wiphy,
400 				  struct wireless_dev *wdev, u64 cookie)
401 {
402 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
403 	struct cfg80211_nan_func *func;
404 	u8 instance_id = 0;
405 
406 	if (sdata->vif.type != NL80211_IFTYPE_NAN ||
407 	    !ieee80211_sdata_running(sdata))
408 		return;
409 
410 	spin_lock_bh(&sdata->u.nan.func_lock);
411 
412 	func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
413 	if (func)
414 		instance_id = func->instance_id;
415 
416 	spin_unlock_bh(&sdata->u.nan.func_lock);
417 
418 	if (instance_id)
419 		drv_del_nan_func(sdata->local, sdata, instance_id);
420 }
421 
ieee80211_set_noack_map(struct wiphy * wiphy,struct net_device * dev,u16 noack_map)422 static int ieee80211_set_noack_map(struct wiphy *wiphy,
423 				  struct net_device *dev,
424 				  u16 noack_map)
425 {
426 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
427 
428 	sdata->noack_map = noack_map;
429 
430 	ieee80211_check_fast_xmit_iface(sdata);
431 
432 	return 0;
433 }
434 
ieee80211_set_tx(struct ieee80211_sub_if_data * sdata,const u8 * mac_addr,u8 key_idx)435 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
436 			    const u8 *mac_addr, u8 key_idx)
437 {
438 	struct ieee80211_local *local = sdata->local;
439 	struct ieee80211_key *key;
440 	struct sta_info *sta;
441 	int ret = -EINVAL;
442 
443 	if (!wiphy_ext_feature_isset(local->hw.wiphy,
444 				     NL80211_EXT_FEATURE_EXT_KEY_ID))
445 		return -EINVAL;
446 
447 	sta = sta_info_get_bss(sdata, mac_addr);
448 
449 	if (!sta)
450 		return -EINVAL;
451 
452 	if (sta->ptk_idx == key_idx)
453 		return 0;
454 
455 	mutex_lock(&local->key_mtx);
456 	key = key_mtx_dereference(local, sta->ptk[key_idx]);
457 
458 	if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
459 		ret = ieee80211_set_tx_key(key);
460 
461 	mutex_unlock(&local->key_mtx);
462 	return ret;
463 }
464 
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)465 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
466 			     int link_id, u8 key_idx, bool pairwise,
467 			     const u8 *mac_addr, struct key_params *params)
468 {
469 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
470 	struct ieee80211_link_data *link =
471 		ieee80211_link_or_deflink(sdata, link_id, false);
472 	struct ieee80211_local *local = sdata->local;
473 	struct sta_info *sta = NULL;
474 	struct ieee80211_key *key;
475 	int err;
476 
477 	if (!ieee80211_sdata_running(sdata))
478 		return -ENETDOWN;
479 
480 	if (IS_ERR(link))
481 		return PTR_ERR(link);
482 
483 	if (pairwise && params->mode == NL80211_KEY_SET_TX)
484 		return ieee80211_set_tx(sdata, mac_addr, key_idx);
485 
486 	/* reject WEP and TKIP keys if WEP failed to initialize */
487 	switch (params->cipher) {
488 	case WLAN_CIPHER_SUITE_WEP40:
489 	case WLAN_CIPHER_SUITE_TKIP:
490 	case WLAN_CIPHER_SUITE_WEP104:
491 		if (link_id >= 0)
492 			return -EINVAL;
493 		if (WARN_ON_ONCE(fips_enabled))
494 			return -EINVAL;
495 		break;
496 	default:
497 		break;
498 	}
499 
500 	key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
501 				  params->key, params->seq_len, params->seq);
502 	if (IS_ERR(key))
503 		return PTR_ERR(key);
504 
505 	key->conf.link_id = link_id;
506 
507 	if (pairwise)
508 		key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
509 
510 	if (params->mode == NL80211_KEY_NO_TX)
511 		key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
512 
513 	mutex_lock(&local->sta_mtx);
514 
515 	if (mac_addr) {
516 		sta = sta_info_get_bss(sdata, mac_addr);
517 		/*
518 		 * The ASSOC test makes sure the driver is ready to
519 		 * receive the key. When wpa_supplicant has roamed
520 		 * using FT, it attempts to set the key before
521 		 * association has completed, this rejects that attempt
522 		 * so it will set the key again after association.
523 		 *
524 		 * TODO: accept the key if we have a station entry and
525 		 *       add it to the device after the station.
526 		 */
527 		if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
528 			ieee80211_key_free_unused(key);
529 			err = -ENOENT;
530 			goto out_unlock;
531 		}
532 	}
533 
534 	switch (sdata->vif.type) {
535 	case NL80211_IFTYPE_STATION:
536 		if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
537 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
538 		break;
539 	case NL80211_IFTYPE_AP:
540 	case NL80211_IFTYPE_AP_VLAN:
541 		/* Keys without a station are used for TX only */
542 		if (sta && test_sta_flag(sta, WLAN_STA_MFP))
543 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
544 		break;
545 	case NL80211_IFTYPE_ADHOC:
546 		/* no MFP (yet) */
547 		break;
548 	case NL80211_IFTYPE_MESH_POINT:
549 #ifdef CONFIG_MAC80211_MESH
550 		if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
551 			key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
552 		break;
553 #endif
554 	case NL80211_IFTYPE_WDS:
555 	case NL80211_IFTYPE_MONITOR:
556 	case NL80211_IFTYPE_P2P_DEVICE:
557 	case NL80211_IFTYPE_NAN:
558 	case NL80211_IFTYPE_UNSPECIFIED:
559 	case NUM_NL80211_IFTYPES:
560 	case NL80211_IFTYPE_P2P_CLIENT:
561 	case NL80211_IFTYPE_P2P_GO:
562 	case NL80211_IFTYPE_OCB:
563 		/* shouldn't happen */
564 		WARN_ON_ONCE(1);
565 		break;
566 	}
567 
568 	err = ieee80211_key_link(key, link, sta);
569 	/* KRACK protection, shouldn't happen but just silently accept key */
570 	if (err == -EALREADY)
571 		err = 0;
572 
573  out_unlock:
574 	mutex_unlock(&local->sta_mtx);
575 
576 	return err;
577 }
578 
579 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)580 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, int link_id,
581 		     u8 key_idx, bool pairwise, const u8 *mac_addr)
582 {
583 	struct ieee80211_local *local __maybe_unused = sdata->local;
584 	struct ieee80211_link_data *link = &sdata->deflink;
585 	struct ieee80211_key *key;
586 
587 	if (link_id >= 0) {
588 		link = rcu_dereference_check(sdata->link[link_id],
589 					     lockdep_is_held(&sdata->wdev.mtx));
590 		if (!link)
591 			return NULL;
592 	}
593 
594 	if (mac_addr) {
595 		struct sta_info *sta;
596 		struct link_sta_info *link_sta;
597 
598 		sta = sta_info_get_bss(sdata, mac_addr);
599 		if (!sta)
600 			return NULL;
601 
602 		if (link_id >= 0) {
603 			link_sta = rcu_dereference_check(sta->link[link_id],
604 							 lockdep_is_held(&local->sta_mtx));
605 			if (!link_sta)
606 				return NULL;
607 		} else {
608 			link_sta = &sta->deflink;
609 		}
610 
611 		if (pairwise && key_idx < NUM_DEFAULT_KEYS)
612 			return rcu_dereference_check_key_mtx(local,
613 							     sta->ptk[key_idx]);
614 
615 		if (!pairwise &&
616 		    key_idx < NUM_DEFAULT_KEYS +
617 			      NUM_DEFAULT_MGMT_KEYS +
618 			      NUM_DEFAULT_BEACON_KEYS)
619 			return rcu_dereference_check_key_mtx(local,
620 							     link_sta->gtk[key_idx]);
621 
622 		return NULL;
623 	}
624 
625 	if (pairwise && key_idx < NUM_DEFAULT_KEYS)
626 		return rcu_dereference_check_key_mtx(local,
627 						     sdata->keys[key_idx]);
628 
629 	key = rcu_dereference_check_key_mtx(local, link->gtk[key_idx]);
630 	if (key)
631 		return key;
632 
633 	/* or maybe it was a WEP key */
634 	if (key_idx < NUM_DEFAULT_KEYS)
635 		return rcu_dereference_check_key_mtx(local, sdata->keys[key_idx]);
636 
637 	return NULL;
638 }
639 
ieee80211_del_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool pairwise,const u8 * mac_addr)640 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
641 			     int link_id, u8 key_idx, bool pairwise,
642 			     const u8 *mac_addr)
643 {
644 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
645 	struct ieee80211_local *local = sdata->local;
646 	struct ieee80211_key *key;
647 	int ret;
648 
649 	mutex_lock(&local->sta_mtx);
650 	mutex_lock(&local->key_mtx);
651 
652 	key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
653 	if (!key) {
654 		ret = -ENOENT;
655 		goto out_unlock;
656 	}
657 
658 	ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
659 
660 	ret = 0;
661  out_unlock:
662 	mutex_unlock(&local->key_mtx);
663 	mutex_unlock(&local->sta_mtx);
664 
665 	return ret;
666 }
667 
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))668 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
669 			     int link_id, u8 key_idx, bool pairwise,
670 			     const u8 *mac_addr, void *cookie,
671 			     void (*callback)(void *cookie,
672 					      struct key_params *params))
673 {
674 	struct ieee80211_sub_if_data *sdata;
675 	u8 seq[6] = {0};
676 	struct key_params params;
677 	struct ieee80211_key *key;
678 	u64 pn64;
679 	u32 iv32;
680 	u16 iv16;
681 	int err = -ENOENT;
682 	struct ieee80211_key_seq kseq = {};
683 
684 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
685 
686 	rcu_read_lock();
687 
688 	key = ieee80211_lookup_key(sdata, link_id, key_idx, pairwise, mac_addr);
689 	if (!key)
690 		goto out;
691 
692 	memset(&params, 0, sizeof(params));
693 
694 	params.cipher = key->conf.cipher;
695 
696 	switch (key->conf.cipher) {
697 	case WLAN_CIPHER_SUITE_TKIP:
698 		pn64 = atomic64_read(&key->conf.tx_pn);
699 		iv32 = TKIP_PN_TO_IV32(pn64);
700 		iv16 = TKIP_PN_TO_IV16(pn64);
701 
702 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
703 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
704 			drv_get_key_seq(sdata->local, key, &kseq);
705 			iv32 = kseq.tkip.iv32;
706 			iv16 = kseq.tkip.iv16;
707 		}
708 
709 		seq[0] = iv16 & 0xff;
710 		seq[1] = (iv16 >> 8) & 0xff;
711 		seq[2] = iv32 & 0xff;
712 		seq[3] = (iv32 >> 8) & 0xff;
713 		seq[4] = (iv32 >> 16) & 0xff;
714 		seq[5] = (iv32 >> 24) & 0xff;
715 		params.seq = seq;
716 		params.seq_len = 6;
717 		break;
718 	case WLAN_CIPHER_SUITE_CCMP:
719 	case WLAN_CIPHER_SUITE_CCMP_256:
720 	case WLAN_CIPHER_SUITE_AES_CMAC:
721 	case WLAN_CIPHER_SUITE_BIP_CMAC_256:
722 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
723 			     offsetof(typeof(kseq), aes_cmac));
724 		fallthrough;
725 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
726 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
727 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
728 			     offsetof(typeof(kseq), aes_gmac));
729 		fallthrough;
730 	case WLAN_CIPHER_SUITE_GCMP:
731 	case WLAN_CIPHER_SUITE_GCMP_256:
732 		BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
733 			     offsetof(typeof(kseq), gcmp));
734 
735 		if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
736 		    !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
737 			drv_get_key_seq(sdata->local, key, &kseq);
738 			memcpy(seq, kseq.ccmp.pn, 6);
739 		} else {
740 			pn64 = atomic64_read(&key->conf.tx_pn);
741 			seq[0] = pn64;
742 			seq[1] = pn64 >> 8;
743 			seq[2] = pn64 >> 16;
744 			seq[3] = pn64 >> 24;
745 			seq[4] = pn64 >> 32;
746 			seq[5] = pn64 >> 40;
747 		}
748 		params.seq = seq;
749 		params.seq_len = 6;
750 		break;
751 	default:
752 		if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
753 			break;
754 		if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
755 			break;
756 		drv_get_key_seq(sdata->local, key, &kseq);
757 		params.seq = kseq.hw.seq;
758 		params.seq_len = kseq.hw.seq_len;
759 		break;
760 	}
761 
762 	params.key = key->conf.key;
763 	params.key_len = key->conf.keylen;
764 
765 	callback(cookie, &params);
766 	err = 0;
767 
768  out:
769 	rcu_read_unlock();
770 	return err;
771 }
772 
ieee80211_config_default_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx,bool uni,bool multi)773 static int ieee80211_config_default_key(struct wiphy *wiphy,
774 					struct net_device *dev,
775 					int link_id, u8 key_idx, bool uni,
776 					bool multi)
777 {
778 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
779 	struct ieee80211_link_data *link =
780 		ieee80211_link_or_deflink(sdata, link_id, false);
781 
782 	if (IS_ERR(link))
783 		return PTR_ERR(link);
784 
785 	ieee80211_set_default_key(link, key_idx, uni, multi);
786 
787 	return 0;
788 }
789 
ieee80211_config_default_mgmt_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)790 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
791 					     struct net_device *dev,
792 					     int link_id, u8 key_idx)
793 {
794 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
795 	struct ieee80211_link_data *link =
796 		ieee80211_link_or_deflink(sdata, link_id, true);
797 
798 	if (IS_ERR(link))
799 		return PTR_ERR(link);
800 
801 	ieee80211_set_default_mgmt_key(link, key_idx);
802 
803 	return 0;
804 }
805 
ieee80211_config_default_beacon_key(struct wiphy * wiphy,struct net_device * dev,int link_id,u8 key_idx)806 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy,
807 					       struct net_device *dev,
808 					       int link_id, u8 key_idx)
809 {
810 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
811 	struct ieee80211_link_data *link =
812 		ieee80211_link_or_deflink(sdata, link_id, true);
813 
814 	if (IS_ERR(link))
815 		return PTR_ERR(link);
816 
817 	ieee80211_set_default_beacon_key(link, key_idx);
818 
819 	return 0;
820 }
821 
sta_set_rate_info_tx(struct sta_info * sta,const struct ieee80211_tx_rate * rate,struct rate_info * rinfo)822 void sta_set_rate_info_tx(struct sta_info *sta,
823 			  const struct ieee80211_tx_rate *rate,
824 			  struct rate_info *rinfo)
825 {
826 	rinfo->flags = 0;
827 	if (rate->flags & IEEE80211_TX_RC_MCS) {
828 		rinfo->flags |= RATE_INFO_FLAGS_MCS;
829 		rinfo->mcs = rate->idx;
830 	} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
831 		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
832 		rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
833 		rinfo->nss = ieee80211_rate_get_vht_nss(rate);
834 	} else {
835 		struct ieee80211_supported_band *sband;
836 		int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
837 		u16 brate;
838 
839 		sband = ieee80211_get_sband(sta->sdata);
840 		WARN_ON_ONCE(sband && !sband->bitrates);
841 		if (sband && sband->bitrates) {
842 			brate = sband->bitrates[rate->idx].bitrate;
843 			rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
844 		}
845 	}
846 	if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
847 		rinfo->bw = RATE_INFO_BW_40;
848 	else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
849 		rinfo->bw = RATE_INFO_BW_80;
850 	else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
851 		rinfo->bw = RATE_INFO_BW_160;
852 	else
853 		rinfo->bw = RATE_INFO_BW_20;
854 	if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
855 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
856 }
857 
ieee80211_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)858 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
859 				  int idx, u8 *mac, struct station_info *sinfo)
860 {
861 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
862 	struct ieee80211_local *local = sdata->local;
863 	struct sta_info *sta;
864 	int ret = -ENOENT;
865 
866 	mutex_lock(&local->sta_mtx);
867 
868 	sta = sta_info_get_by_idx(sdata, idx);
869 	if (sta) {
870 		ret = 0;
871 		memcpy(mac, sta->sta.addr, ETH_ALEN);
872 		sta_set_sinfo(sta, sinfo, true);
873 	}
874 
875 	mutex_unlock(&local->sta_mtx);
876 
877 	return ret;
878 }
879 
ieee80211_dump_survey(struct wiphy * wiphy,struct net_device * dev,int idx,struct survey_info * survey)880 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
881 				 int idx, struct survey_info *survey)
882 {
883 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
884 
885 	return drv_get_survey(local, idx, survey);
886 }
887 
ieee80211_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)888 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
889 				 const u8 *mac, struct station_info *sinfo)
890 {
891 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
892 	struct ieee80211_local *local = sdata->local;
893 	struct sta_info *sta;
894 	int ret = -ENOENT;
895 
896 	mutex_lock(&local->sta_mtx);
897 
898 	sta = sta_info_get_bss(sdata, mac);
899 	if (sta) {
900 		ret = 0;
901 		sta_set_sinfo(sta, sinfo, true);
902 	}
903 
904 	mutex_unlock(&local->sta_mtx);
905 
906 	return ret;
907 }
908 
ieee80211_set_monitor_channel(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)909 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
910 					 struct cfg80211_chan_def *chandef)
911 {
912 	struct ieee80211_local *local = wiphy_priv(wiphy);
913 	struct ieee80211_sub_if_data *sdata;
914 	int ret = 0;
915 
916 	if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
917 		return 0;
918 
919 	if (local->use_chanctx) {
920 		sdata = wiphy_dereference(local->hw.wiphy,
921 					  local->monitor_sdata);
922 		if (sdata) {
923 			sdata_lock(sdata);
924 			mutex_lock(&local->mtx);
925 			ieee80211_link_release_channel(&sdata->deflink);
926 			ret = ieee80211_link_use_channel(&sdata->deflink,
927 							 chandef,
928 							 IEEE80211_CHANCTX_EXCLUSIVE);
929 			mutex_unlock(&local->mtx);
930 			sdata_unlock(sdata);
931 		}
932 	} else {
933 		mutex_lock(&local->mtx);
934 		if (local->open_count == local->monitors) {
935 			local->_oper_chandef = *chandef;
936 			ieee80211_hw_config(local, 0);
937 		}
938 		mutex_unlock(&local->mtx);
939 	}
940 
941 	if (ret == 0)
942 		local->monitor_chandef = *chandef;
943 
944 	return ret;
945 }
946 
947 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)948 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
949 			 const u8 *resp, size_t resp_len,
950 			 const struct ieee80211_csa_settings *csa,
951 			 const struct ieee80211_color_change_settings *cca,
952 			 struct ieee80211_link_data *link)
953 {
954 	struct probe_resp *new, *old;
955 
956 	if (!resp || !resp_len)
957 		return 1;
958 
959 	old = sdata_dereference(link->u.ap.probe_resp, sdata);
960 
961 	new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
962 	if (!new)
963 		return -ENOMEM;
964 
965 	new->len = resp_len;
966 	memcpy(new->data, resp, resp_len);
967 
968 	if (csa)
969 		memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp,
970 		       csa->n_counter_offsets_presp *
971 		       sizeof(new->cntdwn_counter_offsets[0]));
972 	else if (cca)
973 		new->cntdwn_counter_offsets[0] = cca->counter_offset_presp;
974 
975 	rcu_assign_pointer(link->u.ap.probe_resp, new);
976 	if (old)
977 		kfree_rcu(old, rcu_head);
978 
979 	return 0;
980 }
981 
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)982 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata,
983 					struct cfg80211_fils_discovery *params,
984 					struct ieee80211_link_data *link,
985 					struct ieee80211_bss_conf *link_conf)
986 {
987 	struct fils_discovery_data *new, *old = NULL;
988 	struct ieee80211_fils_discovery *fd;
989 
990 	if (!params->tmpl || !params->tmpl_len)
991 		return -EINVAL;
992 
993 	fd = &link_conf->fils_discovery;
994 	fd->min_interval = params->min_interval;
995 	fd->max_interval = params->max_interval;
996 
997 	old = sdata_dereference(link->u.ap.fils_discovery, sdata);
998 	new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
999 	if (!new)
1000 		return -ENOMEM;
1001 	new->len = params->tmpl_len;
1002 	memcpy(new->data, params->tmpl, params->tmpl_len);
1003 	rcu_assign_pointer(link->u.ap.fils_discovery, new);
1004 
1005 	if (old)
1006 		kfree_rcu(old, rcu_head);
1007 
1008 	return 0;
1009 }
1010 
1011 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)1012 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata,
1013 				     struct cfg80211_unsol_bcast_probe_resp *params,
1014 				     struct ieee80211_link_data *link,
1015 				     struct ieee80211_bss_conf *link_conf)
1016 {
1017 	struct unsol_bcast_probe_resp_data *new, *old = NULL;
1018 
1019 	if (!params->tmpl || !params->tmpl_len)
1020 		return -EINVAL;
1021 
1022 	old = sdata_dereference(link->u.ap.unsol_bcast_probe_resp, sdata);
1023 	new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL);
1024 	if (!new)
1025 		return -ENOMEM;
1026 	new->len = params->tmpl_len;
1027 	memcpy(new->data, params->tmpl, params->tmpl_len);
1028 	rcu_assign_pointer(link->u.ap.unsol_bcast_probe_resp, new);
1029 
1030 	if (old)
1031 		kfree_rcu(old, rcu_head);
1032 
1033 	link_conf->unsol_bcast_probe_resp_interval = params->interval;
1034 
1035 	return 0;
1036 }
1037 
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)1038 static int ieee80211_set_ftm_responder_params(
1039 				struct ieee80211_sub_if_data *sdata,
1040 				const u8 *lci, size_t lci_len,
1041 				const u8 *civicloc, size_t civicloc_len,
1042 				struct ieee80211_bss_conf *link_conf)
1043 {
1044 	struct ieee80211_ftm_responder_params *new, *old;
1045 	u8 *pos;
1046 	int len;
1047 
1048 	if (!lci_len && !civicloc_len)
1049 		return 0;
1050 
1051 	old = link_conf->ftmr_params;
1052 	len = lci_len + civicloc_len;
1053 
1054 	new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
1055 	if (!new)
1056 		return -ENOMEM;
1057 
1058 	pos = (u8 *)(new + 1);
1059 	if (lci_len) {
1060 		new->lci_len = lci_len;
1061 		new->lci = pos;
1062 		memcpy(pos, lci, lci_len);
1063 		pos += lci_len;
1064 	}
1065 
1066 	if (civicloc_len) {
1067 		new->civicloc_len = civicloc_len;
1068 		new->civicloc = pos;
1069 		memcpy(pos, civicloc, civicloc_len);
1070 		pos += civicloc_len;
1071 	}
1072 
1073 	link_conf->ftmr_params = new;
1074 	kfree(old);
1075 
1076 	return 0;
1077 }
1078 
1079 static int
ieee80211_copy_mbssid_beacon(u8 * pos,struct cfg80211_mbssid_elems * dst,struct cfg80211_mbssid_elems * src)1080 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst,
1081 			     struct cfg80211_mbssid_elems *src)
1082 {
1083 	int i, offset = 0;
1084 
1085 	for (i = 0; i < src->cnt; i++) {
1086 		memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1087 		dst->elem[i].len = src->elem[i].len;
1088 		dst->elem[i].data = pos + offset;
1089 		offset += dst->elem[i].len;
1090 	}
1091 	dst->cnt = src->cnt;
1092 
1093 	return offset;
1094 }
1095 
1096 static int
ieee80211_copy_rnr_beacon(u8 * pos,struct cfg80211_rnr_elems * dst,struct cfg80211_rnr_elems * src)1097 ieee80211_copy_rnr_beacon(u8 *pos, struct cfg80211_rnr_elems *dst,
1098 			  struct cfg80211_rnr_elems *src)
1099 {
1100 	int i, offset = 0;
1101 
1102 	for (i = 0; i < src->cnt; i++) {
1103 		memcpy(pos + offset, src->elem[i].data, src->elem[i].len);
1104 		dst->elem[i].len = src->elem[i].len;
1105 		dst->elem[i].data = pos + offset;
1106 		offset += dst->elem[i].len;
1107 	}
1108 	dst->cnt = src->cnt;
1109 
1110 	return offset;
1111 }
1112 
1113 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)1114 ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
1115 			struct ieee80211_link_data *link,
1116 			struct cfg80211_beacon_data *params,
1117 			const struct ieee80211_csa_settings *csa,
1118 			const struct ieee80211_color_change_settings *cca,
1119 			u64 *changed)
1120 {
1121 	struct cfg80211_mbssid_elems *mbssid = NULL;
1122 	struct cfg80211_rnr_elems *rnr = NULL;
1123 	struct beacon_data *new, *old;
1124 	int new_head_len, new_tail_len;
1125 	int size, err;
1126 	u64 _changed = BSS_CHANGED_BEACON;
1127 	struct ieee80211_bss_conf *link_conf = link->conf;
1128 
1129 	old = sdata_dereference(link->u.ap.beacon, sdata);
1130 
1131 	/* Need to have a beacon head if we don't have one yet */
1132 	if (!params->head && !old)
1133 		return -EINVAL;
1134 
1135 	/* new or old head? */
1136 	if (params->head)
1137 		new_head_len = params->head_len;
1138 	else
1139 		new_head_len = old->head_len;
1140 
1141 	/* new or old tail? */
1142 	if (params->tail || !old)
1143 		/* params->tail_len will be zero for !params->tail */
1144 		new_tail_len = params->tail_len;
1145 	else
1146 		new_tail_len = old->tail_len;
1147 
1148 	size = sizeof(*new) + new_head_len + new_tail_len;
1149 
1150 	/* new or old multiple BSSID elements? */
1151 	if (params->mbssid_ies) {
1152 		mbssid = params->mbssid_ies;
1153 		size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1154 		if (params->rnr_ies) {
1155 			rnr = params->rnr_ies;
1156 			size += struct_size(new->rnr_ies, elem, rnr->cnt);
1157 		}
1158 		size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1159 							mbssid->cnt);
1160 	} else if (old && old->mbssid_ies) {
1161 		mbssid = old->mbssid_ies;
1162 		size += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1163 		if (old && old->rnr_ies) {
1164 			rnr = old->rnr_ies;
1165 			size += struct_size(new->rnr_ies, elem, rnr->cnt);
1166 		}
1167 		size += ieee80211_get_mbssid_beacon_len(mbssid, rnr,
1168 							mbssid->cnt);
1169 	}
1170 
1171 	new = kzalloc(size, GFP_KERNEL);
1172 	if (!new)
1173 		return -ENOMEM;
1174 
1175 	/* start filling the new info now */
1176 
1177 	/*
1178 	 * pointers go into the block we allocated,
1179 	 * memory is | beacon_data | head | tail | mbssid_ies | rnr_ies
1180 	 */
1181 	new->head = ((u8 *) new) + sizeof(*new);
1182 	new->tail = new->head + new_head_len;
1183 	new->head_len = new_head_len;
1184 	new->tail_len = new_tail_len;
1185 	/* copy in optional mbssid_ies */
1186 	if (mbssid) {
1187 		u8 *pos = new->tail + new->tail_len;
1188 
1189 		new->mbssid_ies = (void *)pos;
1190 		pos += struct_size(new->mbssid_ies, elem, mbssid->cnt);
1191 		pos += ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies,
1192 						    mbssid);
1193 		if (rnr) {
1194 			new->rnr_ies = (void *)pos;
1195 			pos += struct_size(new->rnr_ies, elem, rnr->cnt);
1196 			ieee80211_copy_rnr_beacon(pos, new->rnr_ies, rnr);
1197 		}
1198 		/* update bssid_indicator */
1199 		link_conf->bssid_indicator =
1200 			ilog2(__roundup_pow_of_two(mbssid->cnt + 1));
1201 	}
1202 
1203 	if (csa) {
1204 		new->cntdwn_current_counter = csa->count;
1205 		memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon,
1206 		       csa->n_counter_offsets_beacon *
1207 		       sizeof(new->cntdwn_counter_offsets[0]));
1208 	} else if (cca) {
1209 		new->cntdwn_current_counter = cca->count;
1210 		new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon;
1211 	}
1212 
1213 	/* copy in head */
1214 	if (params->head)
1215 		memcpy(new->head, params->head, new_head_len);
1216 	else
1217 		memcpy(new->head, old->head, new_head_len);
1218 
1219 	/* copy in optional tail */
1220 	if (params->tail)
1221 		memcpy(new->tail, params->tail, new_tail_len);
1222 	else
1223 		if (old)
1224 			memcpy(new->tail, old->tail, new_tail_len);
1225 
1226 	err = ieee80211_set_probe_resp(sdata, params->probe_resp,
1227 				       params->probe_resp_len, csa, cca, link);
1228 	if (err < 0) {
1229 		kfree(new);
1230 		return err;
1231 	}
1232 	if (err == 0)
1233 		_changed |= BSS_CHANGED_AP_PROBE_RESP;
1234 
1235 	if (params->ftm_responder != -1) {
1236 		link_conf->ftm_responder = params->ftm_responder;
1237 		err = ieee80211_set_ftm_responder_params(sdata,
1238 							 params->lci,
1239 							 params->lci_len,
1240 							 params->civicloc,
1241 							 params->civicloc_len,
1242 							 link_conf);
1243 
1244 		if (err < 0) {
1245 			kfree(new);
1246 			return err;
1247 		}
1248 
1249 		_changed |= BSS_CHANGED_FTM_RESPONDER;
1250 	}
1251 
1252 	rcu_assign_pointer(link->u.ap.beacon, new);
1253 	sdata->u.ap.active = true;
1254 
1255 	if (old)
1256 		kfree_rcu(old, rcu_head);
1257 
1258 	*changed |= _changed;
1259 	return 0;
1260 }
1261 
ieee80211_start_ap(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ap_settings * params)1262 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
1263 			      struct cfg80211_ap_settings *params)
1264 {
1265 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1266 	struct ieee80211_local *local = sdata->local;
1267 	struct beacon_data *old;
1268 	struct ieee80211_sub_if_data *vlan;
1269 	u64 changed = BSS_CHANGED_BEACON_INT |
1270 		      BSS_CHANGED_BEACON_ENABLED |
1271 		      BSS_CHANGED_BEACON |
1272 		      BSS_CHANGED_P2P_PS |
1273 		      BSS_CHANGED_TXPOWER |
1274 		      BSS_CHANGED_TWT;
1275 	int i, err;
1276 	int prev_beacon_int;
1277 	unsigned int link_id = params->beacon.link_id;
1278 	struct ieee80211_link_data *link;
1279 	struct ieee80211_bss_conf *link_conf;
1280 
1281 	link = sdata_dereference(sdata->link[link_id], sdata);
1282 	if (!link)
1283 		return -ENOLINK;
1284 
1285 	link_conf = link->conf;
1286 
1287 	old = sdata_dereference(link->u.ap.beacon, sdata);
1288 	if (old)
1289 		return -EALREADY;
1290 
1291 	if (params->smps_mode != NL80211_SMPS_OFF)
1292 		return -ENOTSUPP;
1293 
1294 	link->smps_mode = IEEE80211_SMPS_OFF;
1295 
1296 	link->needed_rx_chains = sdata->local->rx_chains;
1297 
1298 	prev_beacon_int = link_conf->beacon_int;
1299 	link_conf->beacon_int = params->beacon_interval;
1300 
1301 	if (params->ht_cap)
1302 		link_conf->ht_ldpc =
1303 			params->ht_cap->cap_info &
1304 				cpu_to_le16(IEEE80211_HT_CAP_LDPC_CODING);
1305 
1306 	if (params->vht_cap) {
1307 		link_conf->vht_ldpc =
1308 			params->vht_cap->vht_cap_info &
1309 				cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC);
1310 		link_conf->vht_su_beamformer =
1311 			params->vht_cap->vht_cap_info &
1312 				cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
1313 		link_conf->vht_su_beamformee =
1314 			params->vht_cap->vht_cap_info &
1315 				cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
1316 		link_conf->vht_mu_beamformer =
1317 			params->vht_cap->vht_cap_info &
1318 				cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
1319 		link_conf->vht_mu_beamformee =
1320 			params->vht_cap->vht_cap_info &
1321 				cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
1322 	}
1323 
1324 	if (params->he_cap && params->he_oper) {
1325 		link_conf->he_support = true;
1326 		link_conf->htc_trig_based_pkt_ext =
1327 			le32_get_bits(params->he_oper->he_oper_params,
1328 			      IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK);
1329 		link_conf->frame_time_rts_th =
1330 			le32_get_bits(params->he_oper->he_oper_params,
1331 			      IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK);
1332 		changed |= BSS_CHANGED_HE_OBSS_PD;
1333 
1334 		if (params->beacon.he_bss_color.enabled)
1335 			changed |= BSS_CHANGED_HE_BSS_COLOR;
1336 	}
1337 
1338 	if (params->he_cap) {
1339 		link_conf->he_ldpc =
1340 			params->he_cap->phy_cap_info[1] &
1341 				IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD;
1342 		link_conf->he_su_beamformer =
1343 			params->he_cap->phy_cap_info[3] &
1344 				IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER;
1345 		link_conf->he_su_beamformee =
1346 			params->he_cap->phy_cap_info[4] &
1347 				IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE;
1348 		link_conf->he_mu_beamformer =
1349 			params->he_cap->phy_cap_info[4] &
1350 				IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
1351 		link_conf->he_full_ul_mumimo =
1352 			params->he_cap->phy_cap_info[2] &
1353 				IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO;
1354 	}
1355 
1356 	if (params->eht_cap) {
1357 		if (!link_conf->he_support)
1358 			return -EOPNOTSUPP;
1359 
1360 		link_conf->eht_support = true;
1361 		link_conf->eht_puncturing = params->punct_bitmap;
1362 		changed |= BSS_CHANGED_EHT_PUNCTURING;
1363 
1364 		link_conf->eht_su_beamformer =
1365 			params->eht_cap->fixed.phy_cap_info[0] &
1366 				IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER;
1367 		link_conf->eht_su_beamformee =
1368 			params->eht_cap->fixed.phy_cap_info[0] &
1369 				IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE;
1370 		link_conf->eht_mu_beamformer =
1371 			params->eht_cap->fixed.phy_cap_info[7] &
1372 				(IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
1373 				 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
1374 				 IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ);
1375 	} else {
1376 		link_conf->eht_su_beamformer = false;
1377 		link_conf->eht_su_beamformee = false;
1378 		link_conf->eht_mu_beamformer = false;
1379 	}
1380 
1381 	if (sdata->vif.type == NL80211_IFTYPE_AP &&
1382 	    params->mbssid_config.tx_wdev) {
1383 		err = ieee80211_set_ap_mbssid_options(sdata,
1384 						      params->mbssid_config,
1385 						      link_conf);
1386 		if (err)
1387 			return err;
1388 	}
1389 
1390 	mutex_lock(&local->mtx);
1391 	err = ieee80211_link_use_channel(link, &params->chandef,
1392 					 IEEE80211_CHANCTX_SHARED);
1393 	if (!err)
1394 		ieee80211_link_copy_chanctx_to_vlans(link, false);
1395 	mutex_unlock(&local->mtx);
1396 	if (err) {
1397 		link_conf->beacon_int = prev_beacon_int;
1398 		return err;
1399 	}
1400 
1401 	/*
1402 	 * Apply control port protocol, this allows us to
1403 	 * not encrypt dynamic WEP control frames.
1404 	 */
1405 	sdata->control_port_protocol = params->crypto.control_port_ethertype;
1406 	sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1407 	sdata->control_port_over_nl80211 =
1408 				params->crypto.control_port_over_nl80211;
1409 	sdata->control_port_no_preauth =
1410 				params->crypto.control_port_no_preauth;
1411 
1412 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1413 		vlan->control_port_protocol =
1414 			params->crypto.control_port_ethertype;
1415 		vlan->control_port_no_encrypt =
1416 			params->crypto.control_port_no_encrypt;
1417 		vlan->control_port_over_nl80211 =
1418 			params->crypto.control_port_over_nl80211;
1419 		vlan->control_port_no_preauth =
1420 			params->crypto.control_port_no_preauth;
1421 	}
1422 
1423 	link_conf->dtim_period = params->dtim_period;
1424 	link_conf->enable_beacon = true;
1425 	link_conf->allow_p2p_go_ps = sdata->vif.p2p;
1426 	link_conf->twt_responder = params->twt_responder;
1427 	link_conf->he_obss_pd = params->he_obss_pd;
1428 	link_conf->he_bss_color = params->beacon.he_bss_color;
1429 	sdata->vif.cfg.s1g = params->chandef.chan->band ==
1430 				  NL80211_BAND_S1GHZ;
1431 
1432 	sdata->vif.cfg.ssid_len = params->ssid_len;
1433 	if (params->ssid_len)
1434 		memcpy(sdata->vif.cfg.ssid, params->ssid,
1435 		       params->ssid_len);
1436 	link_conf->hidden_ssid =
1437 		(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1438 
1439 	memset(&link_conf->p2p_noa_attr, 0,
1440 	       sizeof(link_conf->p2p_noa_attr));
1441 	link_conf->p2p_noa_attr.oppps_ctwindow =
1442 		params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1443 	if (params->p2p_opp_ps)
1444 		link_conf->p2p_noa_attr.oppps_ctwindow |=
1445 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
1446 
1447 	sdata->beacon_rate_set = false;
1448 	if (wiphy_ext_feature_isset(local->hw.wiphy,
1449 				    NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
1450 		for (i = 0; i < NUM_NL80211_BANDS; i++) {
1451 			sdata->beacon_rateidx_mask[i] =
1452 				params->beacon_rate.control[i].legacy;
1453 			if (sdata->beacon_rateidx_mask[i])
1454 				sdata->beacon_rate_set = true;
1455 		}
1456 	}
1457 
1458 	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
1459 		link_conf->beacon_tx_rate = params->beacon_rate;
1460 
1461 	err = ieee80211_assign_beacon(sdata, link, &params->beacon, NULL, NULL,
1462 				      &changed);
1463 	if (err < 0)
1464 		goto error;
1465 
1466 	if (params->fils_discovery.max_interval) {
1467 		err = ieee80211_set_fils_discovery(sdata,
1468 						   &params->fils_discovery,
1469 						   link, link_conf);
1470 		if (err < 0)
1471 			goto error;
1472 		changed |= BSS_CHANGED_FILS_DISCOVERY;
1473 	}
1474 
1475 	if (params->unsol_bcast_probe_resp.interval) {
1476 		err = ieee80211_set_unsol_bcast_probe_resp(sdata,
1477 							   &params->unsol_bcast_probe_resp,
1478 							   link, link_conf);
1479 		if (err < 0)
1480 			goto error;
1481 		changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP;
1482 	}
1483 
1484 	err = drv_start_ap(sdata->local, sdata, link_conf);
1485 	if (err) {
1486 		old = sdata_dereference(link->u.ap.beacon, sdata);
1487 
1488 		if (old)
1489 			kfree_rcu(old, rcu_head);
1490 		RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1491 		sdata->u.ap.active = false;
1492 		goto error;
1493 	}
1494 
1495 	ieee80211_recalc_dtim(local, sdata);
1496 	ieee80211_vif_cfg_change_notify(sdata, BSS_CHANGED_SSID);
1497 	ieee80211_link_info_change_notify(sdata, link, changed);
1498 
1499 	netif_carrier_on(dev);
1500 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1501 		netif_carrier_on(vlan->dev);
1502 
1503 	return 0;
1504 
1505 error:
1506 	mutex_lock(&local->mtx);
1507 	ieee80211_link_release_channel(link);
1508 	mutex_unlock(&local->mtx);
1509 
1510 	return err;
1511 }
1512 
ieee80211_change_beacon(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_beacon_data * params)1513 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1514 				   struct cfg80211_beacon_data *params)
1515 {
1516 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1517 	struct ieee80211_link_data *link;
1518 	struct beacon_data *old;
1519 	int err;
1520 	struct ieee80211_bss_conf *link_conf;
1521 	u64 changed = 0;
1522 
1523 	sdata_assert_lock(sdata);
1524 
1525 	link = sdata_dereference(sdata->link[params->link_id], sdata);
1526 	if (!link)
1527 		return -ENOLINK;
1528 
1529 	link_conf = link->conf;
1530 
1531 	/* don't allow changing the beacon while a countdown is in place - offset
1532 	 * of channel switch counter may change
1533 	 */
1534 	if (link_conf->csa_active || link_conf->color_change_active)
1535 		return -EBUSY;
1536 
1537 	old = sdata_dereference(link->u.ap.beacon, sdata);
1538 	if (!old)
1539 		return -ENOENT;
1540 
1541 	err = ieee80211_assign_beacon(sdata, link, params, NULL, NULL,
1542 				      &changed);
1543 	if (err < 0)
1544 		return err;
1545 
1546 	if (params->he_bss_color_valid &&
1547 	    params->he_bss_color.enabled != link_conf->he_bss_color.enabled) {
1548 		link_conf->he_bss_color.enabled = params->he_bss_color.enabled;
1549 		changed |= BSS_CHANGED_HE_BSS_COLOR;
1550 	}
1551 
1552 	ieee80211_link_info_change_notify(sdata, link, changed);
1553 	return 0;
1554 }
1555 
ieee80211_free_next_beacon(struct ieee80211_link_data * link)1556 static void ieee80211_free_next_beacon(struct ieee80211_link_data *link)
1557 {
1558 	if (!link->u.ap.next_beacon)
1559 		return;
1560 
1561 	kfree(link->u.ap.next_beacon->mbssid_ies);
1562 	kfree(link->u.ap.next_beacon->rnr_ies);
1563 	kfree(link->u.ap.next_beacon);
1564 	link->u.ap.next_beacon = NULL;
1565 }
1566 
ieee80211_stop_ap(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id)1567 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev,
1568 			     unsigned int link_id)
1569 {
1570 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571 	struct ieee80211_sub_if_data *vlan;
1572 	struct ieee80211_local *local = sdata->local;
1573 	struct beacon_data *old_beacon;
1574 	struct probe_resp *old_probe_resp;
1575 	struct fils_discovery_data *old_fils_discovery;
1576 	struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp;
1577 	struct cfg80211_chan_def chandef;
1578 	struct ieee80211_link_data *link =
1579 		sdata_dereference(sdata->link[link_id], sdata);
1580 	struct ieee80211_bss_conf *link_conf = link->conf;
1581 
1582 	sdata_assert_lock(sdata);
1583 
1584 	old_beacon = sdata_dereference(link->u.ap.beacon, sdata);
1585 	if (!old_beacon)
1586 		return -ENOENT;
1587 	old_probe_resp = sdata_dereference(link->u.ap.probe_resp,
1588 					   sdata);
1589 	old_fils_discovery = sdata_dereference(link->u.ap.fils_discovery,
1590 					       sdata);
1591 	old_unsol_bcast_probe_resp =
1592 		sdata_dereference(link->u.ap.unsol_bcast_probe_resp,
1593 				  sdata);
1594 
1595 	/* abort any running channel switch or color change */
1596 	mutex_lock(&local->mtx);
1597 	link_conf->csa_active = false;
1598 	link_conf->color_change_active = false;
1599 	if (link->csa_block_tx) {
1600 		ieee80211_wake_vif_queues(local, sdata,
1601 					  IEEE80211_QUEUE_STOP_REASON_CSA);
1602 		link->csa_block_tx = false;
1603 	}
1604 
1605 	mutex_unlock(&local->mtx);
1606 
1607 	ieee80211_free_next_beacon(link);
1608 
1609 	/* turn off carrier for this interface and dependent VLANs */
1610 	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1611 		netif_carrier_off(vlan->dev);
1612 	netif_carrier_off(dev);
1613 
1614 	/* remove beacon and probe response */
1615 	sdata->u.ap.active = false;
1616 	RCU_INIT_POINTER(link->u.ap.beacon, NULL);
1617 	RCU_INIT_POINTER(link->u.ap.probe_resp, NULL);
1618 	RCU_INIT_POINTER(link->u.ap.fils_discovery, NULL);
1619 	RCU_INIT_POINTER(link->u.ap.unsol_bcast_probe_resp, NULL);
1620 	kfree_rcu(old_beacon, rcu_head);
1621 	if (old_probe_resp)
1622 		kfree_rcu(old_probe_resp, rcu_head);
1623 	if (old_fils_discovery)
1624 		kfree_rcu(old_fils_discovery, rcu_head);
1625 	if (old_unsol_bcast_probe_resp)
1626 		kfree_rcu(old_unsol_bcast_probe_resp, rcu_head);
1627 
1628 	kfree(link_conf->ftmr_params);
1629 	link_conf->ftmr_params = NULL;
1630 
1631 	sdata->vif.mbssid_tx_vif = NULL;
1632 	link_conf->bssid_index = 0;
1633 	link_conf->nontransmitted = false;
1634 	link_conf->ema_ap = false;
1635 	link_conf->bssid_indicator = 0;
1636 
1637 	__sta_info_flush(sdata, true);
1638 	ieee80211_free_keys(sdata, true);
1639 
1640 	link_conf->enable_beacon = false;
1641 	sdata->beacon_rate_set = false;
1642 	sdata->vif.cfg.ssid_len = 0;
1643 	clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1644 	ieee80211_link_info_change_notify(sdata, link,
1645 					  BSS_CHANGED_BEACON_ENABLED);
1646 
1647 	if (sdata->wdev.cac_started) {
1648 		chandef = link_conf->chandef;
1649 		cancel_delayed_work_sync(&link->dfs_cac_timer_work);
1650 		cfg80211_cac_event(sdata->dev, &chandef,
1651 				   NL80211_RADAR_CAC_ABORTED,
1652 				   GFP_KERNEL);
1653 	}
1654 
1655 	drv_stop_ap(sdata->local, sdata, link_conf);
1656 
1657 	/* free all potentially still buffered bcast frames */
1658 	local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1659 	ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1660 
1661 	mutex_lock(&local->mtx);
1662 	ieee80211_link_copy_chanctx_to_vlans(link, true);
1663 	ieee80211_link_release_channel(link);
1664 	mutex_unlock(&local->mtx);
1665 
1666 	return 0;
1667 }
1668 
sta_apply_auth_flags(struct ieee80211_local * local,struct sta_info * sta,u32 mask,u32 set)1669 static int sta_apply_auth_flags(struct ieee80211_local *local,
1670 				struct sta_info *sta,
1671 				u32 mask, u32 set)
1672 {
1673 	int ret;
1674 
1675 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1676 	    set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1677 	    !test_sta_flag(sta, WLAN_STA_AUTH)) {
1678 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1679 		if (ret)
1680 			return ret;
1681 	}
1682 
1683 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1684 	    set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1685 	    !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1686 		/*
1687 		 * When peer becomes associated, init rate control as
1688 		 * well. Some drivers require rate control initialized
1689 		 * before drv_sta_state() is called.
1690 		 */
1691 		if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1692 			rate_control_rate_init(sta);
1693 
1694 		ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1695 		if (ret)
1696 			return ret;
1697 	}
1698 
1699 	if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1700 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1701 			ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1702 		else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1703 			ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1704 		else
1705 			ret = 0;
1706 		if (ret)
1707 			return ret;
1708 	}
1709 
1710 	if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1711 	    !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1712 	    test_sta_flag(sta, WLAN_STA_ASSOC)) {
1713 		ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1714 		if (ret)
1715 			return ret;
1716 	}
1717 
1718 	if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1719 	    !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1720 	    test_sta_flag(sta, WLAN_STA_AUTH)) {
1721 		ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1722 		if (ret)
1723 			return ret;
1724 	}
1725 
1726 	return 0;
1727 }
1728 
sta_apply_mesh_params(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1729 static void sta_apply_mesh_params(struct ieee80211_local *local,
1730 				  struct sta_info *sta,
1731 				  struct station_parameters *params)
1732 {
1733 #ifdef CONFIG_MAC80211_MESH
1734 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1735 	u64 changed = 0;
1736 
1737 	if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1738 		switch (params->plink_state) {
1739 		case NL80211_PLINK_ESTAB:
1740 			if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1741 				changed = mesh_plink_inc_estab_count(sdata);
1742 			sta->mesh->plink_state = params->plink_state;
1743 			sta->mesh->aid = params->peer_aid;
1744 
1745 			ieee80211_mps_sta_status_update(sta);
1746 			changed |= ieee80211_mps_set_sta_local_pm(sta,
1747 				      sdata->u.mesh.mshcfg.power_mode);
1748 
1749 			ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1750 			/* init at low value */
1751 			ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1752 
1753 			break;
1754 		case NL80211_PLINK_LISTEN:
1755 		case NL80211_PLINK_BLOCKED:
1756 		case NL80211_PLINK_OPN_SNT:
1757 		case NL80211_PLINK_OPN_RCVD:
1758 		case NL80211_PLINK_CNF_RCVD:
1759 		case NL80211_PLINK_HOLDING:
1760 			if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1761 				changed = mesh_plink_dec_estab_count(sdata);
1762 			sta->mesh->plink_state = params->plink_state;
1763 
1764 			ieee80211_mps_sta_status_update(sta);
1765 			changed |= ieee80211_mps_set_sta_local_pm(sta,
1766 					NL80211_MESH_POWER_UNKNOWN);
1767 			break;
1768 		default:
1769 			/*  nothing  */
1770 			break;
1771 		}
1772 	}
1773 
1774 	switch (params->plink_action) {
1775 	case NL80211_PLINK_ACTION_NO_ACTION:
1776 		/* nothing */
1777 		break;
1778 	case NL80211_PLINK_ACTION_OPEN:
1779 		changed |= mesh_plink_open(sta);
1780 		break;
1781 	case NL80211_PLINK_ACTION_BLOCK:
1782 		changed |= mesh_plink_block(sta);
1783 		break;
1784 	}
1785 
1786 	if (params->local_pm)
1787 		changed |= ieee80211_mps_set_sta_local_pm(sta,
1788 							  params->local_pm);
1789 
1790 	ieee80211_mbss_info_change_notify(sdata, changed);
1791 #endif
1792 }
1793 
sta_link_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,bool new_link,struct link_station_parameters * params)1794 static int sta_link_apply_parameters(struct ieee80211_local *local,
1795 				     struct sta_info *sta, bool new_link,
1796 				     struct link_station_parameters *params)
1797 {
1798 	int ret = 0;
1799 	struct ieee80211_supported_band *sband;
1800 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1801 	u32 link_id = params->link_id < 0 ? 0 : params->link_id;
1802 	struct ieee80211_link_data *link =
1803 		sdata_dereference(sdata->link[link_id], sdata);
1804 	struct link_sta_info *link_sta =
1805 		rcu_dereference_protected(sta->link[link_id],
1806 					  lockdep_is_held(&local->sta_mtx));
1807 
1808 	/*
1809 	 * If there are no changes, then accept a link that exist,
1810 	 * unless it's a new link.
1811 	 */
1812 	if (params->link_id >= 0 && !new_link &&
1813 	    !params->link_mac && !params->txpwr_set &&
1814 	    !params->supported_rates_len &&
1815 	    !params->ht_capa && !params->vht_capa &&
1816 	    !params->he_capa && !params->eht_capa &&
1817 	    !params->opmode_notif_used)
1818 		return 0;
1819 
1820 	if (!link || !link_sta)
1821 		return -EINVAL;
1822 
1823 	sband = ieee80211_get_link_sband(link);
1824 	if (!sband)
1825 		return -EINVAL;
1826 
1827 	if (params->link_mac) {
1828 		if (new_link) {
1829 			memcpy(link_sta->addr, params->link_mac, ETH_ALEN);
1830 			memcpy(link_sta->pub->addr, params->link_mac, ETH_ALEN);
1831 		} else if (!ether_addr_equal(link_sta->addr,
1832 					     params->link_mac)) {
1833 			return -EINVAL;
1834 		}
1835 	} else if (new_link) {
1836 		return -EINVAL;
1837 	}
1838 
1839 	if (params->txpwr_set) {
1840 		link_sta->pub->txpwr.type = params->txpwr.type;
1841 		if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1842 			link_sta->pub->txpwr.power = params->txpwr.power;
1843 		ret = drv_sta_set_txpwr(local, sdata, sta);
1844 		if (ret)
1845 			return ret;
1846 	}
1847 
1848 	if (params->supported_rates &&
1849 	    params->supported_rates_len) {
1850 		ieee80211_parse_bitrates(link->conf->chandef.width,
1851 					 sband, params->supported_rates,
1852 					 params->supported_rates_len,
1853 					 &link_sta->pub->supp_rates[sband->band]);
1854 	}
1855 
1856 	if (params->ht_capa)
1857 		ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1858 						  params->ht_capa, link_sta);
1859 
1860 	/* VHT can override some HT caps such as the A-MSDU max length */
1861 	if (params->vht_capa)
1862 		ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1863 						    params->vht_capa, NULL,
1864 						    link_sta);
1865 
1866 	if (params->he_capa)
1867 		ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1868 						  (void *)params->he_capa,
1869 						  params->he_capa_len,
1870 						  (void *)params->he_6ghz_capa,
1871 						  link_sta);
1872 
1873 	if (params->he_capa && params->eht_capa)
1874 		ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband,
1875 						    (u8 *)params->he_capa,
1876 						    params->he_capa_len,
1877 						    params->eht_capa,
1878 						    params->eht_capa_len,
1879 						    link_sta);
1880 
1881 	if (params->opmode_notif_used) {
1882 		/* returned value is only needed for rc update, but the
1883 		 * rc isn't initialized here yet, so ignore it
1884 		 */
1885 		__ieee80211_vht_handle_opmode(sdata, link_sta,
1886 					      params->opmode_notif,
1887 					      sband->band);
1888 	}
1889 
1890 	ieee80211_sta_init_nss(link_sta);
1891 
1892 	return ret;
1893 }
1894 
sta_apply_parameters(struct ieee80211_local * local,struct sta_info * sta,struct station_parameters * params)1895 static int sta_apply_parameters(struct ieee80211_local *local,
1896 				struct sta_info *sta,
1897 				struct station_parameters *params)
1898 {
1899 	struct ieee80211_sub_if_data *sdata = sta->sdata;
1900 	u32 mask, set;
1901 	int ret = 0;
1902 
1903 	mask = params->sta_flags_mask;
1904 	set = params->sta_flags_set;
1905 
1906 	if (ieee80211_vif_is_mesh(&sdata->vif)) {
1907 		/*
1908 		 * In mesh mode, ASSOCIATED isn't part of the nl80211
1909 		 * API but must follow AUTHENTICATED for driver state.
1910 		 */
1911 		if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1912 			mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1913 		if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1914 			set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1915 	} else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1916 		/*
1917 		 * TDLS -- everything follows authorized, but
1918 		 * only becoming authorized is possible, not
1919 		 * going back
1920 		 */
1921 		if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1922 			set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1923 			       BIT(NL80211_STA_FLAG_ASSOCIATED);
1924 			mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1925 				BIT(NL80211_STA_FLAG_ASSOCIATED);
1926 		}
1927 	}
1928 
1929 	if (mask & BIT(NL80211_STA_FLAG_WME) &&
1930 	    local->hw.queues >= IEEE80211_NUM_ACS)
1931 		sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1932 
1933 	/* auth flags will be set later for TDLS,
1934 	 * and for unassociated stations that move to associated */
1935 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1936 	    !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1937 	      (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1938 		ret = sta_apply_auth_flags(local, sta, mask, set);
1939 		if (ret)
1940 			return ret;
1941 	}
1942 
1943 	if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1944 		if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1945 			set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1946 		else
1947 			clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1948 	}
1949 
1950 	if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1951 		sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1952 		if (set & BIT(NL80211_STA_FLAG_MFP))
1953 			set_sta_flag(sta, WLAN_STA_MFP);
1954 		else
1955 			clear_sta_flag(sta, WLAN_STA_MFP);
1956 	}
1957 
1958 	if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1959 		if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1960 			set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1961 		else
1962 			clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1963 	}
1964 
1965 	/* mark TDLS channel switch support, if the AP allows it */
1966 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1967 	    !sdata->deflink.u.mgd.tdls_chan_switch_prohibited &&
1968 	    params->ext_capab_len >= 4 &&
1969 	    params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1970 		set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1971 
1972 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1973 	    !sdata->u.mgd.tdls_wider_bw_prohibited &&
1974 	    ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1975 	    params->ext_capab_len >= 8 &&
1976 	    params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1977 		set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1978 
1979 	if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1980 		sta->sta.uapsd_queues = params->uapsd_queues;
1981 		sta->sta.max_sp = params->max_sp;
1982 	}
1983 
1984 	ieee80211_sta_set_max_amsdu_subframes(sta, params->ext_capab,
1985 					      params->ext_capab_len);
1986 
1987 	/*
1988 	 * cfg80211 validates this (1-2007) and allows setting the AID
1989 	 * only when creating a new station entry
1990 	 */
1991 	if (params->aid)
1992 		sta->sta.aid = params->aid;
1993 
1994 	/*
1995 	 * Some of the following updates would be racy if called on an
1996 	 * existing station, via ieee80211_change_station(). However,
1997 	 * all such changes are rejected by cfg80211 except for updates
1998 	 * changing the supported rates on an existing but not yet used
1999 	 * TDLS peer.
2000 	 */
2001 
2002 	if (params->listen_interval >= 0)
2003 		sta->listen_interval = params->listen_interval;
2004 
2005 	ret = sta_link_apply_parameters(local, sta, false,
2006 					&params->link_sta_params);
2007 	if (ret)
2008 		return ret;
2009 
2010 	if (params->support_p2p_ps >= 0)
2011 		sta->sta.support_p2p_ps = params->support_p2p_ps;
2012 
2013 	if (ieee80211_vif_is_mesh(&sdata->vif))
2014 		sta_apply_mesh_params(local, sta, params);
2015 
2016 	if (params->airtime_weight)
2017 		sta->airtime_weight = params->airtime_weight;
2018 
2019 	/* set the STA state after all sta info from usermode has been set */
2020 	if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
2021 	    set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
2022 		ret = sta_apply_auth_flags(local, sta, mask, set);
2023 		if (ret)
2024 			return ret;
2025 	}
2026 
2027 	/* Mark the STA as MLO if MLD MAC address is available */
2028 	if (params->link_sta_params.mld_mac)
2029 		sta->sta.mlo = true;
2030 
2031 	return 0;
2032 }
2033 
ieee80211_add_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)2034 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
2035 				 const u8 *mac,
2036 				 struct station_parameters *params)
2037 {
2038 	struct ieee80211_local *local = wiphy_priv(wiphy);
2039 	struct sta_info *sta;
2040 	struct ieee80211_sub_if_data *sdata;
2041 	int err;
2042 
2043 	if (params->vlan) {
2044 		sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2045 
2046 		if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
2047 		    sdata->vif.type != NL80211_IFTYPE_AP)
2048 			return -EINVAL;
2049 	} else
2050 		sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2051 
2052 	if (ether_addr_equal(mac, sdata->vif.addr))
2053 		return -EINVAL;
2054 
2055 	if (!is_valid_ether_addr(mac))
2056 		return -EINVAL;
2057 
2058 	if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
2059 	    sdata->vif.type == NL80211_IFTYPE_STATION &&
2060 	    !sdata->u.mgd.associated)
2061 		return -EINVAL;
2062 
2063 	/*
2064 	 * If we have a link ID, it can be a non-MLO station on an AP MLD,
2065 	 * but we need to have a link_mac in that case as well, so use the
2066 	 * STA's MAC address in that case.
2067 	 */
2068 	if (params->link_sta_params.link_id >= 0)
2069 		sta = sta_info_alloc_with_link(sdata, mac,
2070 					       params->link_sta_params.link_id,
2071 					       params->link_sta_params.link_mac ?: mac,
2072 					       GFP_KERNEL);
2073 	else
2074 		sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
2075 
2076 	if (!sta)
2077 		return -ENOMEM;
2078 
2079 	if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
2080 		sta->sta.tdls = true;
2081 
2082 	/* Though the mutex is not needed here (since the station is not
2083 	 * visible yet), sta_apply_parameters (and inner functions) require
2084 	 * the mutex due to other paths.
2085 	 */
2086 	mutex_lock(&local->sta_mtx);
2087 	err = sta_apply_parameters(local, sta, params);
2088 	mutex_unlock(&local->sta_mtx);
2089 	if (err) {
2090 		sta_info_free(local, sta);
2091 		return err;
2092 	}
2093 
2094 	/*
2095 	 * for TDLS and for unassociated station, rate control should be
2096 	 * initialized only when rates are known and station is marked
2097 	 * authorized/associated
2098 	 */
2099 	if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
2100 	    test_sta_flag(sta, WLAN_STA_ASSOC))
2101 		rate_control_rate_init(sta);
2102 
2103 	return sta_info_insert(sta);
2104 }
2105 
ieee80211_del_station(struct wiphy * wiphy,struct net_device * dev,struct station_del_parameters * params)2106 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
2107 				 struct station_del_parameters *params)
2108 {
2109 	struct ieee80211_sub_if_data *sdata;
2110 
2111 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2112 
2113 	if (params->mac)
2114 		return sta_info_destroy_addr_bss(sdata, params->mac);
2115 
2116 	sta_info_flush(sdata);
2117 	return 0;
2118 }
2119 
ieee80211_change_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_parameters * params)2120 static int ieee80211_change_station(struct wiphy *wiphy,
2121 				    struct net_device *dev, const u8 *mac,
2122 				    struct station_parameters *params)
2123 {
2124 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2125 	struct ieee80211_local *local = wiphy_priv(wiphy);
2126 	struct sta_info *sta;
2127 	struct ieee80211_sub_if_data *vlansdata;
2128 	enum cfg80211_station_type statype;
2129 	int err;
2130 
2131 	mutex_lock(&local->sta_mtx);
2132 
2133 	sta = sta_info_get_bss(sdata, mac);
2134 	if (!sta) {
2135 		err = -ENOENT;
2136 		goto out_err;
2137 	}
2138 
2139 	switch (sdata->vif.type) {
2140 	case NL80211_IFTYPE_MESH_POINT:
2141 		if (sdata->u.mesh.user_mpm)
2142 			statype = CFG80211_STA_MESH_PEER_USER;
2143 		else
2144 			statype = CFG80211_STA_MESH_PEER_KERNEL;
2145 		break;
2146 	case NL80211_IFTYPE_ADHOC:
2147 		statype = CFG80211_STA_IBSS;
2148 		break;
2149 	case NL80211_IFTYPE_STATION:
2150 		if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
2151 			statype = CFG80211_STA_AP_STA;
2152 			break;
2153 		}
2154 		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2155 			statype = CFG80211_STA_TDLS_PEER_ACTIVE;
2156 		else
2157 			statype = CFG80211_STA_TDLS_PEER_SETUP;
2158 		break;
2159 	case NL80211_IFTYPE_AP:
2160 	case NL80211_IFTYPE_AP_VLAN:
2161 		if (test_sta_flag(sta, WLAN_STA_ASSOC))
2162 			statype = CFG80211_STA_AP_CLIENT;
2163 		else
2164 			statype = CFG80211_STA_AP_CLIENT_UNASSOC;
2165 		break;
2166 	default:
2167 		err = -EOPNOTSUPP;
2168 		goto out_err;
2169 	}
2170 
2171 	err = cfg80211_check_station_change(wiphy, params, statype);
2172 	if (err)
2173 		goto out_err;
2174 
2175 	if (params->vlan && params->vlan != sta->sdata->dev) {
2176 		vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
2177 
2178 		if (params->vlan->ieee80211_ptr->use_4addr) {
2179 			if (vlansdata->u.vlan.sta) {
2180 				err = -EBUSY;
2181 				goto out_err;
2182 			}
2183 
2184 			rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
2185 			__ieee80211_check_fast_rx_iface(vlansdata);
2186 			drv_sta_set_4addr(local, sta->sdata, &sta->sta, true);
2187 		}
2188 
2189 		if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
2190 		    sta->sdata->u.vlan.sta)
2191 			RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
2192 
2193 		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2194 			ieee80211_vif_dec_num_mcast(sta->sdata);
2195 
2196 		sta->sdata = vlansdata;
2197 		ieee80211_check_fast_rx(sta);
2198 		ieee80211_check_fast_xmit(sta);
2199 
2200 		if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
2201 			ieee80211_vif_inc_num_mcast(sta->sdata);
2202 			cfg80211_send_layer2_update(sta->sdata->dev,
2203 						    sta->sta.addr);
2204 		}
2205 	}
2206 
2207 	/* we use sta_info_get_bss() so this might be different */
2208 	if (sdata != sta->sdata) {
2209 		mutex_lock_nested(&sta->sdata->wdev.mtx, 1);
2210 		err = sta_apply_parameters(local, sta, params);
2211 		mutex_unlock(&sta->sdata->wdev.mtx);
2212 	} else {
2213 		err = sta_apply_parameters(local, sta, params);
2214 	}
2215 	if (err)
2216 		goto out_err;
2217 
2218 	mutex_unlock(&local->sta_mtx);
2219 
2220 	if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2221 	    params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
2222 		ieee80211_recalc_ps(local);
2223 		ieee80211_recalc_ps_vif(sdata);
2224 	}
2225 
2226 	return 0;
2227 out_err:
2228 	mutex_unlock(&local->sta_mtx);
2229 	return err;
2230 }
2231 
2232 #ifdef CONFIG_MAC80211_MESH
ieee80211_add_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2233 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
2234 			       const u8 *dst, const u8 *next_hop)
2235 {
2236 	struct ieee80211_sub_if_data *sdata;
2237 	struct mesh_path *mpath;
2238 	struct sta_info *sta;
2239 
2240 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241 
2242 	rcu_read_lock();
2243 	sta = sta_info_get(sdata, next_hop);
2244 	if (!sta) {
2245 		rcu_read_unlock();
2246 		return -ENOENT;
2247 	}
2248 
2249 	mpath = mesh_path_add(sdata, dst);
2250 	if (IS_ERR(mpath)) {
2251 		rcu_read_unlock();
2252 		return PTR_ERR(mpath);
2253 	}
2254 
2255 	mesh_path_fix_nexthop(mpath, sta);
2256 
2257 	rcu_read_unlock();
2258 	return 0;
2259 }
2260 
ieee80211_del_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst)2261 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
2262 			       const u8 *dst)
2263 {
2264 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2265 
2266 	if (dst)
2267 		return mesh_path_del(sdata, dst);
2268 
2269 	mesh_path_flush_by_iface(sdata);
2270 	return 0;
2271 }
2272 
ieee80211_change_mpath(struct wiphy * wiphy,struct net_device * dev,const u8 * dst,const u8 * next_hop)2273 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
2274 				  const u8 *dst, const u8 *next_hop)
2275 {
2276 	struct ieee80211_sub_if_data *sdata;
2277 	struct mesh_path *mpath;
2278 	struct sta_info *sta;
2279 
2280 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2281 
2282 	rcu_read_lock();
2283 
2284 	sta = sta_info_get(sdata, next_hop);
2285 	if (!sta) {
2286 		rcu_read_unlock();
2287 		return -ENOENT;
2288 	}
2289 
2290 	mpath = mesh_path_lookup(sdata, dst);
2291 	if (!mpath) {
2292 		rcu_read_unlock();
2293 		return -ENOENT;
2294 	}
2295 
2296 	mesh_path_fix_nexthop(mpath, sta);
2297 
2298 	rcu_read_unlock();
2299 	return 0;
2300 }
2301 
mpath_set_pinfo(struct mesh_path * mpath,u8 * next_hop,struct mpath_info * pinfo)2302 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
2303 			    struct mpath_info *pinfo)
2304 {
2305 	struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
2306 
2307 	if (next_hop_sta)
2308 		memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
2309 	else
2310 		eth_zero_addr(next_hop);
2311 
2312 	memset(pinfo, 0, sizeof(*pinfo));
2313 
2314 	pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
2315 
2316 	pinfo->filled = MPATH_INFO_FRAME_QLEN |
2317 			MPATH_INFO_SN |
2318 			MPATH_INFO_METRIC |
2319 			MPATH_INFO_EXPTIME |
2320 			MPATH_INFO_DISCOVERY_TIMEOUT |
2321 			MPATH_INFO_DISCOVERY_RETRIES |
2322 			MPATH_INFO_FLAGS |
2323 			MPATH_INFO_HOP_COUNT |
2324 			MPATH_INFO_PATH_CHANGE;
2325 
2326 	pinfo->frame_qlen = mpath->frame_queue.qlen;
2327 	pinfo->sn = mpath->sn;
2328 	pinfo->metric = mpath->metric;
2329 	if (time_before(jiffies, mpath->exp_time))
2330 		pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
2331 	pinfo->discovery_timeout =
2332 			jiffies_to_msecs(mpath->discovery_timeout);
2333 	pinfo->discovery_retries = mpath->discovery_retries;
2334 	if (mpath->flags & MESH_PATH_ACTIVE)
2335 		pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
2336 	if (mpath->flags & MESH_PATH_RESOLVING)
2337 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
2338 	if (mpath->flags & MESH_PATH_SN_VALID)
2339 		pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
2340 	if (mpath->flags & MESH_PATH_FIXED)
2341 		pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
2342 	if (mpath->flags & MESH_PATH_RESOLVED)
2343 		pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
2344 	pinfo->hop_count = mpath->hop_count;
2345 	pinfo->path_change_count = mpath->path_change_count;
2346 }
2347 
ieee80211_get_mpath(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2348 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
2349 			       u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
2350 
2351 {
2352 	struct ieee80211_sub_if_data *sdata;
2353 	struct mesh_path *mpath;
2354 
2355 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2356 
2357 	rcu_read_lock();
2358 	mpath = mesh_path_lookup(sdata, dst);
2359 	if (!mpath) {
2360 		rcu_read_unlock();
2361 		return -ENOENT;
2362 	}
2363 	memcpy(dst, mpath->dst, ETH_ALEN);
2364 	mpath_set_pinfo(mpath, next_hop, pinfo);
2365 	rcu_read_unlock();
2366 	return 0;
2367 }
2368 
ieee80211_dump_mpath(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * next_hop,struct mpath_info * pinfo)2369 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
2370 				int idx, u8 *dst, u8 *next_hop,
2371 				struct mpath_info *pinfo)
2372 {
2373 	struct ieee80211_sub_if_data *sdata;
2374 	struct mesh_path *mpath;
2375 
2376 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2377 
2378 	rcu_read_lock();
2379 	mpath = mesh_path_lookup_by_idx(sdata, idx);
2380 	if (!mpath) {
2381 		rcu_read_unlock();
2382 		return -ENOENT;
2383 	}
2384 	memcpy(dst, mpath->dst, ETH_ALEN);
2385 	mpath_set_pinfo(mpath, next_hop, pinfo);
2386 	rcu_read_unlock();
2387 	return 0;
2388 }
2389 
mpp_set_pinfo(struct mesh_path * mpath,u8 * mpp,struct mpath_info * pinfo)2390 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
2391 			  struct mpath_info *pinfo)
2392 {
2393 	memset(pinfo, 0, sizeof(*pinfo));
2394 	memcpy(mpp, mpath->mpp, ETH_ALEN);
2395 
2396 	pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
2397 }
2398 
ieee80211_get_mpp(struct wiphy * wiphy,struct net_device * dev,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2399 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
2400 			     u8 *dst, u8 *mpp, struct mpath_info *pinfo)
2401 
2402 {
2403 	struct ieee80211_sub_if_data *sdata;
2404 	struct mesh_path *mpath;
2405 
2406 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2407 
2408 	rcu_read_lock();
2409 	mpath = mpp_path_lookup(sdata, dst);
2410 	if (!mpath) {
2411 		rcu_read_unlock();
2412 		return -ENOENT;
2413 	}
2414 	memcpy(dst, mpath->dst, ETH_ALEN);
2415 	mpp_set_pinfo(mpath, mpp, pinfo);
2416 	rcu_read_unlock();
2417 	return 0;
2418 }
2419 
ieee80211_dump_mpp(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * dst,u8 * mpp,struct mpath_info * pinfo)2420 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
2421 			      int idx, u8 *dst, u8 *mpp,
2422 			      struct mpath_info *pinfo)
2423 {
2424 	struct ieee80211_sub_if_data *sdata;
2425 	struct mesh_path *mpath;
2426 
2427 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2428 
2429 	rcu_read_lock();
2430 	mpath = mpp_path_lookup_by_idx(sdata, idx);
2431 	if (!mpath) {
2432 		rcu_read_unlock();
2433 		return -ENOENT;
2434 	}
2435 	memcpy(dst, mpath->dst, ETH_ALEN);
2436 	mpp_set_pinfo(mpath, mpp, pinfo);
2437 	rcu_read_unlock();
2438 	return 0;
2439 }
2440 
ieee80211_get_mesh_config(struct wiphy * wiphy,struct net_device * dev,struct mesh_config * conf)2441 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
2442 				struct net_device *dev,
2443 				struct mesh_config *conf)
2444 {
2445 	struct ieee80211_sub_if_data *sdata;
2446 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2447 
2448 	memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
2449 	return 0;
2450 }
2451 
_chg_mesh_attr(enum nl80211_meshconf_params parm,u32 mask)2452 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
2453 {
2454 	return (mask >> (parm-1)) & 0x1;
2455 }
2456 
copy_mesh_setup(struct ieee80211_if_mesh * ifmsh,const struct mesh_setup * setup)2457 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
2458 		const struct mesh_setup *setup)
2459 {
2460 	u8 *new_ie;
2461 	struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
2462 					struct ieee80211_sub_if_data, u.mesh);
2463 	int i;
2464 
2465 	/* allocate information elements */
2466 	new_ie = NULL;
2467 
2468 	if (setup->ie_len) {
2469 		new_ie = kmemdup(setup->ie, setup->ie_len,
2470 				GFP_KERNEL);
2471 		if (!new_ie)
2472 			return -ENOMEM;
2473 	}
2474 	ifmsh->ie_len = setup->ie_len;
2475 	ifmsh->ie = new_ie;
2476 
2477 	/* now copy the rest of the setup parameters */
2478 	ifmsh->mesh_id_len = setup->mesh_id_len;
2479 	memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
2480 	ifmsh->mesh_sp_id = setup->sync_method;
2481 	ifmsh->mesh_pp_id = setup->path_sel_proto;
2482 	ifmsh->mesh_pm_id = setup->path_metric;
2483 	ifmsh->user_mpm = setup->user_mpm;
2484 	ifmsh->mesh_auth_id = setup->auth_id;
2485 	ifmsh->security = IEEE80211_MESH_SEC_NONE;
2486 	ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
2487 	if (setup->is_authenticated)
2488 		ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
2489 	if (setup->is_secure)
2490 		ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
2491 
2492 	/* mcast rate setting in Mesh Node */
2493 	memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
2494 						sizeof(setup->mcast_rate));
2495 	sdata->vif.bss_conf.basic_rates = setup->basic_rates;
2496 
2497 	sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
2498 	sdata->vif.bss_conf.dtim_period = setup->dtim_period;
2499 
2500 	sdata->beacon_rate_set = false;
2501 	if (wiphy_ext_feature_isset(sdata->local->hw.wiphy,
2502 				    NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) {
2503 		for (i = 0; i < NUM_NL80211_BANDS; i++) {
2504 			sdata->beacon_rateidx_mask[i] =
2505 				setup->beacon_rate.control[i].legacy;
2506 			if (sdata->beacon_rateidx_mask[i])
2507 				sdata->beacon_rate_set = true;
2508 		}
2509 	}
2510 
2511 	return 0;
2512 }
2513 
ieee80211_update_mesh_config(struct wiphy * wiphy,struct net_device * dev,u32 mask,const struct mesh_config * nconf)2514 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
2515 					struct net_device *dev, u32 mask,
2516 					const struct mesh_config *nconf)
2517 {
2518 	struct mesh_config *conf;
2519 	struct ieee80211_sub_if_data *sdata;
2520 	struct ieee80211_if_mesh *ifmsh;
2521 
2522 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2523 	ifmsh = &sdata->u.mesh;
2524 
2525 	/* Set the config options which we are interested in setting */
2526 	conf = &(sdata->u.mesh.mshcfg);
2527 	if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2528 		conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2529 	if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2530 		conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2531 	if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2532 		conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2533 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2534 		conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2535 	if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2536 		conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2537 	if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2538 		conf->dot11MeshTTL = nconf->dot11MeshTTL;
2539 	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2540 		conf->element_ttl = nconf->element_ttl;
2541 	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2542 		if (ifmsh->user_mpm)
2543 			return -EBUSY;
2544 		conf->auto_open_plinks = nconf->auto_open_plinks;
2545 	}
2546 	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2547 		conf->dot11MeshNbrOffsetMaxNeighbor =
2548 			nconf->dot11MeshNbrOffsetMaxNeighbor;
2549 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2550 		conf->dot11MeshHWMPmaxPREQretries =
2551 			nconf->dot11MeshHWMPmaxPREQretries;
2552 	if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2553 		conf->path_refresh_time = nconf->path_refresh_time;
2554 	if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2555 		conf->min_discovery_timeout = nconf->min_discovery_timeout;
2556 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2557 		conf->dot11MeshHWMPactivePathTimeout =
2558 			nconf->dot11MeshHWMPactivePathTimeout;
2559 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2560 		conf->dot11MeshHWMPpreqMinInterval =
2561 			nconf->dot11MeshHWMPpreqMinInterval;
2562 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2563 		conf->dot11MeshHWMPperrMinInterval =
2564 			nconf->dot11MeshHWMPperrMinInterval;
2565 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2566 			   mask))
2567 		conf->dot11MeshHWMPnetDiameterTraversalTime =
2568 			nconf->dot11MeshHWMPnetDiameterTraversalTime;
2569 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2570 		conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2571 		ieee80211_mesh_root_setup(ifmsh);
2572 	}
2573 	if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2574 		/* our current gate announcement implementation rides on root
2575 		 * announcements, so require this ifmsh to also be a root node
2576 		 * */
2577 		if (nconf->dot11MeshGateAnnouncementProtocol &&
2578 		    !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2579 			conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2580 			ieee80211_mesh_root_setup(ifmsh);
2581 		}
2582 		conf->dot11MeshGateAnnouncementProtocol =
2583 			nconf->dot11MeshGateAnnouncementProtocol;
2584 	}
2585 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2586 		conf->dot11MeshHWMPRannInterval =
2587 			nconf->dot11MeshHWMPRannInterval;
2588 	if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2589 		conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2590 	if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2591 		/* our RSSI threshold implementation is supported only for
2592 		 * devices that report signal in dBm.
2593 		 */
2594 		if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2595 			return -ENOTSUPP;
2596 		conf->rssi_threshold = nconf->rssi_threshold;
2597 	}
2598 	if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2599 		conf->ht_opmode = nconf->ht_opmode;
2600 		sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2601 		ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2602 						  BSS_CHANGED_HT);
2603 	}
2604 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2605 		conf->dot11MeshHWMPactivePathToRootTimeout =
2606 			nconf->dot11MeshHWMPactivePathToRootTimeout;
2607 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2608 		conf->dot11MeshHWMProotInterval =
2609 			nconf->dot11MeshHWMProotInterval;
2610 	if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2611 		conf->dot11MeshHWMPconfirmationInterval =
2612 			nconf->dot11MeshHWMPconfirmationInterval;
2613 	if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2614 		conf->power_mode = nconf->power_mode;
2615 		ieee80211_mps_local_status_update(sdata);
2616 	}
2617 	if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2618 		conf->dot11MeshAwakeWindowDuration =
2619 			nconf->dot11MeshAwakeWindowDuration;
2620 	if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2621 		conf->plink_timeout = nconf->plink_timeout;
2622 	if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2623 		conf->dot11MeshConnectedToMeshGate =
2624 			nconf->dot11MeshConnectedToMeshGate;
2625 	if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask))
2626 		conf->dot11MeshNolearn = nconf->dot11MeshNolearn;
2627 	if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask))
2628 		conf->dot11MeshConnectedToAuthServer =
2629 			nconf->dot11MeshConnectedToAuthServer;
2630 	ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2631 	return 0;
2632 }
2633 
ieee80211_join_mesh(struct wiphy * wiphy,struct net_device * dev,const struct mesh_config * conf,const struct mesh_setup * setup)2634 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2635 			       const struct mesh_config *conf,
2636 			       const struct mesh_setup *setup)
2637 {
2638 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2639 	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2640 	int err;
2641 
2642 	memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2643 	err = copy_mesh_setup(ifmsh, setup);
2644 	if (err)
2645 		return err;
2646 
2647 	sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2648 
2649 	/* can mesh use other SMPS modes? */
2650 	sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
2651 	sdata->deflink.needed_rx_chains = sdata->local->rx_chains;
2652 
2653 	mutex_lock(&sdata->local->mtx);
2654 	err = ieee80211_link_use_channel(&sdata->deflink, &setup->chandef,
2655 					 IEEE80211_CHANCTX_SHARED);
2656 	mutex_unlock(&sdata->local->mtx);
2657 	if (err)
2658 		return err;
2659 
2660 	return ieee80211_start_mesh(sdata);
2661 }
2662 
ieee80211_leave_mesh(struct wiphy * wiphy,struct net_device * dev)2663 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2664 {
2665 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2666 
2667 	ieee80211_stop_mesh(sdata);
2668 	mutex_lock(&sdata->local->mtx);
2669 	ieee80211_link_release_channel(&sdata->deflink);
2670 	kfree(sdata->u.mesh.ie);
2671 	mutex_unlock(&sdata->local->mtx);
2672 
2673 	return 0;
2674 }
2675 #endif
2676 
ieee80211_change_bss(struct wiphy * wiphy,struct net_device * dev,struct bss_parameters * params)2677 static int ieee80211_change_bss(struct wiphy *wiphy,
2678 				struct net_device *dev,
2679 				struct bss_parameters *params)
2680 {
2681 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2682 	struct ieee80211_link_data *link;
2683 	struct ieee80211_supported_band *sband;
2684 	u64 changed = 0;
2685 
2686 	link = ieee80211_link_or_deflink(sdata, params->link_id, true);
2687 	if (IS_ERR(link))
2688 		return PTR_ERR(link);
2689 
2690 	if (!sdata_dereference(link->u.ap.beacon, sdata))
2691 		return -ENOENT;
2692 
2693 	sband = ieee80211_get_link_sband(link);
2694 	if (!sband)
2695 		return -EINVAL;
2696 
2697 	if (params->basic_rates) {
2698 		if (!ieee80211_parse_bitrates(link->conf->chandef.width,
2699 					      wiphy->bands[sband->band],
2700 					      params->basic_rates,
2701 					      params->basic_rates_len,
2702 					      &link->conf->basic_rates))
2703 			return -EINVAL;
2704 		changed |= BSS_CHANGED_BASIC_RATES;
2705 		ieee80211_check_rate_mask(link);
2706 	}
2707 
2708 	if (params->use_cts_prot >= 0) {
2709 		link->conf->use_cts_prot = params->use_cts_prot;
2710 		changed |= BSS_CHANGED_ERP_CTS_PROT;
2711 	}
2712 	if (params->use_short_preamble >= 0) {
2713 		link->conf->use_short_preamble = params->use_short_preamble;
2714 		changed |= BSS_CHANGED_ERP_PREAMBLE;
2715 	}
2716 
2717 	if (!link->conf->use_short_slot &&
2718 	    (sband->band == NL80211_BAND_5GHZ ||
2719 	     sband->band == NL80211_BAND_6GHZ)) {
2720 		link->conf->use_short_slot = true;
2721 		changed |= BSS_CHANGED_ERP_SLOT;
2722 	}
2723 
2724 	if (params->use_short_slot_time >= 0) {
2725 		link->conf->use_short_slot = params->use_short_slot_time;
2726 		changed |= BSS_CHANGED_ERP_SLOT;
2727 	}
2728 
2729 	if (params->ap_isolate >= 0) {
2730 		if (params->ap_isolate)
2731 			sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2732 		else
2733 			sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2734 		ieee80211_check_fast_rx_iface(sdata);
2735 	}
2736 
2737 	if (params->ht_opmode >= 0) {
2738 		link->conf->ht_operation_mode = (u16)params->ht_opmode;
2739 		changed |= BSS_CHANGED_HT;
2740 	}
2741 
2742 	if (params->p2p_ctwindow >= 0) {
2743 		link->conf->p2p_noa_attr.oppps_ctwindow &=
2744 					~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2745 		link->conf->p2p_noa_attr.oppps_ctwindow |=
2746 			params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2747 		changed |= BSS_CHANGED_P2P_PS;
2748 	}
2749 
2750 	if (params->p2p_opp_ps > 0) {
2751 		link->conf->p2p_noa_attr.oppps_ctwindow |=
2752 					IEEE80211_P2P_OPPPS_ENABLE_BIT;
2753 		changed |= BSS_CHANGED_P2P_PS;
2754 	} else if (params->p2p_opp_ps == 0) {
2755 		link->conf->p2p_noa_attr.oppps_ctwindow &=
2756 					~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2757 		changed |= BSS_CHANGED_P2P_PS;
2758 	}
2759 
2760 	ieee80211_link_info_change_notify(sdata, link, changed);
2761 
2762 	return 0;
2763 }
2764 
ieee80211_set_txq_params(struct wiphy * wiphy,struct net_device * dev,struct ieee80211_txq_params * params)2765 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2766 				    struct net_device *dev,
2767 				    struct ieee80211_txq_params *params)
2768 {
2769 	struct ieee80211_local *local = wiphy_priv(wiphy);
2770 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2771 	struct ieee80211_link_data *link =
2772 		ieee80211_link_or_deflink(sdata, params->link_id, true);
2773 	struct ieee80211_tx_queue_params p;
2774 
2775 	if (!local->ops->conf_tx)
2776 		return -EOPNOTSUPP;
2777 
2778 	if (local->hw.queues < IEEE80211_NUM_ACS)
2779 		return -EOPNOTSUPP;
2780 
2781 	if (IS_ERR(link))
2782 		return PTR_ERR(link);
2783 
2784 	memset(&p, 0, sizeof(p));
2785 	p.aifs = params->aifs;
2786 	p.cw_max = params->cwmax;
2787 	p.cw_min = params->cwmin;
2788 	p.txop = params->txop;
2789 
2790 	/*
2791 	 * Setting tx queue params disables u-apsd because it's only
2792 	 * called in master mode.
2793 	 */
2794 	p.uapsd = false;
2795 
2796 	ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2797 
2798 	link->tx_conf[params->ac] = p;
2799 	if (drv_conf_tx(local, link, params->ac, &p)) {
2800 		wiphy_debug(local->hw.wiphy,
2801 			    "failed to set TX queue parameters for AC %d\n",
2802 			    params->ac);
2803 		return -EINVAL;
2804 	}
2805 
2806 	ieee80211_link_info_change_notify(sdata, link,
2807 					  BSS_CHANGED_QOS);
2808 
2809 	return 0;
2810 }
2811 
2812 #ifdef CONFIG_PM
ieee80211_suspend(struct wiphy * wiphy,struct cfg80211_wowlan * wowlan)2813 static int ieee80211_suspend(struct wiphy *wiphy,
2814 			     struct cfg80211_wowlan *wowlan)
2815 {
2816 	return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2817 }
2818 
ieee80211_resume(struct wiphy * wiphy)2819 static int ieee80211_resume(struct wiphy *wiphy)
2820 {
2821 	return __ieee80211_resume(wiphy_priv(wiphy));
2822 }
2823 #else
2824 #define ieee80211_suspend NULL
2825 #define ieee80211_resume NULL
2826 #endif
2827 
ieee80211_scan(struct wiphy * wiphy,struct cfg80211_scan_request * req)2828 static int ieee80211_scan(struct wiphy *wiphy,
2829 			  struct cfg80211_scan_request *req)
2830 {
2831 	struct ieee80211_sub_if_data *sdata;
2832 
2833 	sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2834 
2835 	switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2836 	case NL80211_IFTYPE_STATION:
2837 	case NL80211_IFTYPE_ADHOC:
2838 	case NL80211_IFTYPE_MESH_POINT:
2839 	case NL80211_IFTYPE_P2P_CLIENT:
2840 	case NL80211_IFTYPE_P2P_DEVICE:
2841 		break;
2842 	case NL80211_IFTYPE_P2P_GO:
2843 		if (sdata->local->ops->hw_scan)
2844 			break;
2845 		/*
2846 		 * FIXME: implement NoA while scanning in software,
2847 		 * for now fall through to allow scanning only when
2848 		 * beaconing hasn't been configured yet
2849 		 */
2850 		fallthrough;
2851 	case NL80211_IFTYPE_AP:
2852 		/*
2853 		 * If the scan has been forced (and the driver supports
2854 		 * forcing), don't care about being beaconing already.
2855 		 * This will create problems to the attached stations (e.g. all
2856 		 * the frames sent while scanning on other channel will be
2857 		 * lost)
2858 		 */
2859 		if (sdata->deflink.u.ap.beacon &&
2860 		    (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2861 		     !(req->flags & NL80211_SCAN_FLAG_AP)))
2862 			return -EOPNOTSUPP;
2863 		break;
2864 	case NL80211_IFTYPE_NAN:
2865 	default:
2866 		return -EOPNOTSUPP;
2867 	}
2868 
2869 	return ieee80211_request_scan(sdata, req);
2870 }
2871 
ieee80211_abort_scan(struct wiphy * wiphy,struct wireless_dev * wdev)2872 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2873 {
2874 	ieee80211_scan_cancel(wiphy_priv(wiphy));
2875 }
2876 
2877 static int
ieee80211_sched_scan_start(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_sched_scan_request * req)2878 ieee80211_sched_scan_start(struct wiphy *wiphy,
2879 			   struct net_device *dev,
2880 			   struct cfg80211_sched_scan_request *req)
2881 {
2882 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2883 
2884 	if (!sdata->local->ops->sched_scan_start)
2885 		return -EOPNOTSUPP;
2886 
2887 	return ieee80211_request_sched_scan_start(sdata, req);
2888 }
2889 
2890 static int
ieee80211_sched_scan_stop(struct wiphy * wiphy,struct net_device * dev,u64 reqid)2891 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2892 			  u64 reqid)
2893 {
2894 	struct ieee80211_local *local = wiphy_priv(wiphy);
2895 
2896 	if (!local->ops->sched_scan_stop)
2897 		return -EOPNOTSUPP;
2898 
2899 	return ieee80211_request_sched_scan_stop(local);
2900 }
2901 
ieee80211_auth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_auth_request * req)2902 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2903 			  struct cfg80211_auth_request *req)
2904 {
2905 	return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2906 }
2907 
ieee80211_assoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_assoc_request * req)2908 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2909 			   struct cfg80211_assoc_request *req)
2910 {
2911 	return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2912 }
2913 
ieee80211_deauth(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_deauth_request * req)2914 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2915 			    struct cfg80211_deauth_request *req)
2916 {
2917 	return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2918 }
2919 
ieee80211_disassoc(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_disassoc_request * req)2920 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2921 			      struct cfg80211_disassoc_request *req)
2922 {
2923 	return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2924 }
2925 
ieee80211_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2926 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2927 			       struct cfg80211_ibss_params *params)
2928 {
2929 	return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2930 }
2931 
ieee80211_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2932 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2933 {
2934 	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2935 }
2936 
ieee80211_join_ocb(struct wiphy * wiphy,struct net_device * dev,struct ocb_setup * setup)2937 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2938 			      struct ocb_setup *setup)
2939 {
2940 	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2941 }
2942 
ieee80211_leave_ocb(struct wiphy * wiphy,struct net_device * dev)2943 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2944 {
2945 	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2946 }
2947 
ieee80211_set_mcast_rate(struct wiphy * wiphy,struct net_device * dev,int rate[NUM_NL80211_BANDS])2948 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2949 				    int rate[NUM_NL80211_BANDS])
2950 {
2951 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2952 
2953 	memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2954 	       sizeof(int) * NUM_NL80211_BANDS);
2955 
2956 	if (ieee80211_sdata_running(sdata))
2957 		ieee80211_link_info_change_notify(sdata, &sdata->deflink,
2958 						  BSS_CHANGED_MCAST_RATE);
2959 
2960 	return 0;
2961 }
2962 
ieee80211_set_wiphy_params(struct wiphy * wiphy,u32 changed)2963 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2964 {
2965 	struct ieee80211_local *local = wiphy_priv(wiphy);
2966 	int err;
2967 
2968 	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2969 		ieee80211_check_fast_xmit_all(local);
2970 
2971 		err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2972 
2973 		if (err) {
2974 			ieee80211_check_fast_xmit_all(local);
2975 			return err;
2976 		}
2977 	}
2978 
2979 	if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2980 	    (changed & WIPHY_PARAM_DYN_ACK)) {
2981 		s16 coverage_class;
2982 
2983 		coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2984 					wiphy->coverage_class : -1;
2985 		err = drv_set_coverage_class(local, coverage_class);
2986 
2987 		if (err)
2988 			return err;
2989 	}
2990 
2991 	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2992 		err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2993 
2994 		if (err)
2995 			return err;
2996 	}
2997 
2998 	if (changed & WIPHY_PARAM_RETRY_SHORT) {
2999 		if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
3000 			return -EINVAL;
3001 		local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
3002 	}
3003 	if (changed & WIPHY_PARAM_RETRY_LONG) {
3004 		if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
3005 			return -EINVAL;
3006 		local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
3007 	}
3008 	if (changed &
3009 	    (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
3010 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
3011 
3012 	if (changed & (WIPHY_PARAM_TXQ_LIMIT |
3013 		       WIPHY_PARAM_TXQ_MEMORY_LIMIT |
3014 		       WIPHY_PARAM_TXQ_QUANTUM))
3015 		ieee80211_txq_set_params(local);
3016 
3017 	return 0;
3018 }
3019 
ieee80211_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)3020 static int ieee80211_set_tx_power(struct wiphy *wiphy,
3021 				  struct wireless_dev *wdev,
3022 				  enum nl80211_tx_power_setting type, int mbm)
3023 {
3024 	struct ieee80211_local *local = wiphy_priv(wiphy);
3025 	struct ieee80211_sub_if_data *sdata;
3026 	enum nl80211_tx_power_setting txp_type = type;
3027 	bool update_txp_type = false;
3028 	bool has_monitor = false;
3029 
3030 	if (wdev) {
3031 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3032 
3033 		if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3034 			sdata = wiphy_dereference(local->hw.wiphy,
3035 						  local->monitor_sdata);
3036 			if (!sdata)
3037 				return -EOPNOTSUPP;
3038 		}
3039 
3040 		switch (type) {
3041 		case NL80211_TX_POWER_AUTOMATIC:
3042 			sdata->deflink.user_power_level =
3043 				IEEE80211_UNSET_POWER_LEVEL;
3044 			txp_type = NL80211_TX_POWER_LIMITED;
3045 			break;
3046 		case NL80211_TX_POWER_LIMITED:
3047 		case NL80211_TX_POWER_FIXED:
3048 			if (mbm < 0 || (mbm % 100))
3049 				return -EOPNOTSUPP;
3050 			sdata->deflink.user_power_level = MBM_TO_DBM(mbm);
3051 			break;
3052 		}
3053 
3054 		if (txp_type != sdata->vif.bss_conf.txpower_type) {
3055 			update_txp_type = true;
3056 			sdata->vif.bss_conf.txpower_type = txp_type;
3057 		}
3058 
3059 		ieee80211_recalc_txpower(sdata, update_txp_type);
3060 
3061 		return 0;
3062 	}
3063 
3064 	switch (type) {
3065 	case NL80211_TX_POWER_AUTOMATIC:
3066 		local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
3067 		txp_type = NL80211_TX_POWER_LIMITED;
3068 		break;
3069 	case NL80211_TX_POWER_LIMITED:
3070 	case NL80211_TX_POWER_FIXED:
3071 		if (mbm < 0 || (mbm % 100))
3072 			return -EOPNOTSUPP;
3073 		local->user_power_level = MBM_TO_DBM(mbm);
3074 		break;
3075 	}
3076 
3077 	mutex_lock(&local->iflist_mtx);
3078 	list_for_each_entry(sdata, &local->interfaces, list) {
3079 		if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3080 			has_monitor = true;
3081 			continue;
3082 		}
3083 		sdata->deflink.user_power_level = local->user_power_level;
3084 		if (txp_type != sdata->vif.bss_conf.txpower_type)
3085 			update_txp_type = true;
3086 		sdata->vif.bss_conf.txpower_type = txp_type;
3087 	}
3088 	list_for_each_entry(sdata, &local->interfaces, list) {
3089 		if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
3090 			continue;
3091 		ieee80211_recalc_txpower(sdata, update_txp_type);
3092 	}
3093 	mutex_unlock(&local->iflist_mtx);
3094 
3095 	if (has_monitor) {
3096 		sdata = wiphy_dereference(local->hw.wiphy,
3097 					  local->monitor_sdata);
3098 		if (sdata) {
3099 			sdata->deflink.user_power_level = local->user_power_level;
3100 			if (txp_type != sdata->vif.bss_conf.txpower_type)
3101 				update_txp_type = true;
3102 			sdata->vif.bss_conf.txpower_type = txp_type;
3103 
3104 			ieee80211_recalc_txpower(sdata, update_txp_type);
3105 		}
3106 	}
3107 
3108 	return 0;
3109 }
3110 
ieee80211_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)3111 static int ieee80211_get_tx_power(struct wiphy *wiphy,
3112 				  struct wireless_dev *wdev,
3113 				  int *dbm)
3114 {
3115 	struct ieee80211_local *local = wiphy_priv(wiphy);
3116 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3117 
3118 	if (local->ops->get_txpower)
3119 		return drv_get_txpower(local, sdata, dbm);
3120 
3121 	if (!local->use_chanctx)
3122 		*dbm = local->hw.conf.power_level;
3123 	else
3124 		*dbm = sdata->vif.bss_conf.txpower;
3125 
3126 	/* INT_MIN indicates no power level was set yet */
3127 	if (*dbm == INT_MIN)
3128 		return -EINVAL;
3129 
3130 	return 0;
3131 }
3132 
ieee80211_rfkill_poll(struct wiphy * wiphy)3133 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
3134 {
3135 	struct ieee80211_local *local = wiphy_priv(wiphy);
3136 
3137 	drv_rfkill_poll(local);
3138 }
3139 
3140 #ifdef CONFIG_NL80211_TESTMODE
ieee80211_testmode_cmd(struct wiphy * wiphy,struct wireless_dev * wdev,void * data,int len)3141 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
3142 				  struct wireless_dev *wdev,
3143 				  void *data, int len)
3144 {
3145 	struct ieee80211_local *local = wiphy_priv(wiphy);
3146 	struct ieee80211_vif *vif = NULL;
3147 
3148 	if (!local->ops->testmode_cmd)
3149 		return -EOPNOTSUPP;
3150 
3151 	if (wdev) {
3152 		struct ieee80211_sub_if_data *sdata;
3153 
3154 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3155 		if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
3156 			vif = &sdata->vif;
3157 	}
3158 
3159 	return local->ops->testmode_cmd(&local->hw, vif, data, len);
3160 }
3161 
ieee80211_testmode_dump(struct wiphy * wiphy,struct sk_buff * skb,struct netlink_callback * cb,void * data,int len)3162 static int ieee80211_testmode_dump(struct wiphy *wiphy,
3163 				   struct sk_buff *skb,
3164 				   struct netlink_callback *cb,
3165 				   void *data, int len)
3166 {
3167 	struct ieee80211_local *local = wiphy_priv(wiphy);
3168 
3169 	if (!local->ops->testmode_dump)
3170 		return -EOPNOTSUPP;
3171 
3172 	return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
3173 }
3174 #endif
3175 
__ieee80211_request_smps_mgd(struct ieee80211_sub_if_data * sdata,struct ieee80211_link_data * link,enum ieee80211_smps_mode smps_mode)3176 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
3177 				 struct ieee80211_link_data *link,
3178 				 enum ieee80211_smps_mode smps_mode)
3179 {
3180 	const u8 *ap;
3181 	enum ieee80211_smps_mode old_req;
3182 	int err;
3183 	struct sta_info *sta;
3184 	bool tdls_peer_found = false;
3185 
3186 	lockdep_assert_held(&sdata->wdev.mtx);
3187 
3188 	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
3189 		return -EINVAL;
3190 
3191 	old_req = link->u.mgd.req_smps;
3192 	link->u.mgd.req_smps = smps_mode;
3193 
3194 	if (old_req == smps_mode &&
3195 	    smps_mode != IEEE80211_SMPS_AUTOMATIC)
3196 		return 0;
3197 
3198 	/*
3199 	 * If not associated, or current association is not an HT
3200 	 * association, there's no need to do anything, just store
3201 	 * the new value until we associate.
3202 	 */
3203 	if (!sdata->u.mgd.associated ||
3204 	    link->conf->chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
3205 		return 0;
3206 
3207 	ap = link->u.mgd.bssid;
3208 
3209 	rcu_read_lock();
3210 	list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
3211 		if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
3212 		    !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
3213 			continue;
3214 
3215 		tdls_peer_found = true;
3216 		break;
3217 	}
3218 	rcu_read_unlock();
3219 
3220 	if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
3221 		if (tdls_peer_found || !sdata->u.mgd.powersave)
3222 			smps_mode = IEEE80211_SMPS_OFF;
3223 		else
3224 			smps_mode = IEEE80211_SMPS_DYNAMIC;
3225 	}
3226 
3227 	/* send SM PS frame to AP */
3228 	err = ieee80211_send_smps_action(sdata, smps_mode,
3229 					 ap, ap);
3230 	if (err)
3231 		link->u.mgd.req_smps = old_req;
3232 	else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
3233 		ieee80211_teardown_tdls_peers(sdata);
3234 
3235 	return err;
3236 }
3237 
ieee80211_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)3238 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
3239 				    bool enabled, int timeout)
3240 {
3241 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3242 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3243 	unsigned int link_id;
3244 
3245 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
3246 		return -EOPNOTSUPP;
3247 
3248 	if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
3249 		return -EOPNOTSUPP;
3250 
3251 	if (enabled == sdata->u.mgd.powersave &&
3252 	    timeout == local->dynamic_ps_forced_timeout)
3253 		return 0;
3254 
3255 	sdata->u.mgd.powersave = enabled;
3256 	local->dynamic_ps_forced_timeout = timeout;
3257 
3258 	/* no change, but if automatic follow powersave */
3259 	sdata_lock(sdata);
3260 	for (link_id = 0; link_id < ARRAY_SIZE(sdata->link); link_id++) {
3261 		struct ieee80211_link_data *link;
3262 
3263 		link = sdata_dereference(sdata->link[link_id], sdata);
3264 
3265 		if (!link)
3266 			continue;
3267 		__ieee80211_request_smps_mgd(sdata, link,
3268 					     link->u.mgd.req_smps);
3269 	}
3270 	sdata_unlock(sdata);
3271 
3272 	if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
3273 		ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
3274 
3275 	ieee80211_recalc_ps(local);
3276 	ieee80211_recalc_ps_vif(sdata);
3277 	ieee80211_check_fast_rx_iface(sdata);
3278 
3279 	return 0;
3280 }
3281 
ieee80211_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)3282 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
3283 					 struct net_device *dev,
3284 					 s32 rssi_thold, u32 rssi_hyst)
3285 {
3286 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3287 	struct ieee80211_vif *vif = &sdata->vif;
3288 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3289 
3290 	if (rssi_thold == bss_conf->cqm_rssi_thold &&
3291 	    rssi_hyst == bss_conf->cqm_rssi_hyst)
3292 		return 0;
3293 
3294 	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
3295 	    !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
3296 		return -EOPNOTSUPP;
3297 
3298 	bss_conf->cqm_rssi_thold = rssi_thold;
3299 	bss_conf->cqm_rssi_hyst = rssi_hyst;
3300 	bss_conf->cqm_rssi_low = 0;
3301 	bss_conf->cqm_rssi_high = 0;
3302 	sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3303 
3304 	/* tell the driver upon association, unless already associated */
3305 	if (sdata->u.mgd.associated &&
3306 	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3307 		ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3308 						  BSS_CHANGED_CQM);
3309 
3310 	return 0;
3311 }
3312 
ieee80211_set_cqm_rssi_range_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_low,s32 rssi_high)3313 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
3314 					       struct net_device *dev,
3315 					       s32 rssi_low, s32 rssi_high)
3316 {
3317 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3318 	struct ieee80211_vif *vif = &sdata->vif;
3319 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3320 
3321 	if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
3322 		return -EOPNOTSUPP;
3323 
3324 	bss_conf->cqm_rssi_low = rssi_low;
3325 	bss_conf->cqm_rssi_high = rssi_high;
3326 	bss_conf->cqm_rssi_thold = 0;
3327 	bss_conf->cqm_rssi_hyst = 0;
3328 	sdata->deflink.u.mgd.last_cqm_event_signal = 0;
3329 
3330 	/* tell the driver upon association, unless already associated */
3331 	if (sdata->u.mgd.associated &&
3332 	    sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
3333 		ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3334 						  BSS_CHANGED_CQM);
3335 
3336 	return 0;
3337 }
3338 
ieee80211_set_bitrate_mask(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,const u8 * addr,const struct cfg80211_bitrate_mask * mask)3339 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
3340 				      struct net_device *dev,
3341 				      unsigned int link_id,
3342 				      const u8 *addr,
3343 				      const struct cfg80211_bitrate_mask *mask)
3344 {
3345 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3346 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
3347 	int i, ret;
3348 
3349 	if (!ieee80211_sdata_running(sdata))
3350 		return -ENETDOWN;
3351 
3352 	/*
3353 	 * If active validate the setting and reject it if it doesn't leave
3354 	 * at least one basic rate usable, since we really have to be able
3355 	 * to send something, and if we're an AP we have to be able to do
3356 	 * so at a basic rate so that all clients can receive it.
3357 	 */
3358 	if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) &&
3359 	    sdata->vif.bss_conf.chandef.chan) {
3360 		u32 basic_rates = sdata->vif.bss_conf.basic_rates;
3361 		enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
3362 
3363 		if (!(mask->control[band].legacy & basic_rates))
3364 			return -EINVAL;
3365 	}
3366 
3367 	if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
3368 		ret = drv_set_bitrate_mask(local, sdata, mask);
3369 		if (ret)
3370 			return ret;
3371 	}
3372 
3373 	for (i = 0; i < NUM_NL80211_BANDS; i++) {
3374 		struct ieee80211_supported_band *sband = wiphy->bands[i];
3375 		int j;
3376 
3377 		sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
3378 		memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
3379 		       sizeof(mask->control[i].ht_mcs));
3380 		memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
3381 		       mask->control[i].vht_mcs,
3382 		       sizeof(mask->control[i].vht_mcs));
3383 
3384 		sdata->rc_has_mcs_mask[i] = false;
3385 		sdata->rc_has_vht_mcs_mask[i] = false;
3386 		if (!sband)
3387 			continue;
3388 
3389 		for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
3390 			if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
3391 				sdata->rc_has_mcs_mask[i] = true;
3392 				break;
3393 			}
3394 		}
3395 
3396 		for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
3397 			if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
3398 				sdata->rc_has_vht_mcs_mask[i] = true;
3399 				break;
3400 			}
3401 		}
3402 	}
3403 
3404 	return 0;
3405 }
3406 
ieee80211_start_radar_detection(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_chan_def * chandef,u32 cac_time_ms)3407 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
3408 					   struct net_device *dev,
3409 					   struct cfg80211_chan_def *chandef,
3410 					   u32 cac_time_ms)
3411 {
3412 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3413 	struct ieee80211_local *local = sdata->local;
3414 	int err;
3415 
3416 	mutex_lock(&local->mtx);
3417 	if (!list_empty(&local->roc_list) || local->scanning) {
3418 		err = -EBUSY;
3419 		goto out_unlock;
3420 	}
3421 
3422 	/* whatever, but channel contexts should not complain about that one */
3423 	sdata->deflink.smps_mode = IEEE80211_SMPS_OFF;
3424 	sdata->deflink.needed_rx_chains = local->rx_chains;
3425 
3426 	err = ieee80211_link_use_channel(&sdata->deflink, chandef,
3427 					 IEEE80211_CHANCTX_SHARED);
3428 	if (err)
3429 		goto out_unlock;
3430 
3431 	ieee80211_queue_delayed_work(&sdata->local->hw,
3432 				     &sdata->deflink.dfs_cac_timer_work,
3433 				     msecs_to_jiffies(cac_time_ms));
3434 
3435  out_unlock:
3436 	mutex_unlock(&local->mtx);
3437 	return err;
3438 }
3439 
ieee80211_end_cac(struct wiphy * wiphy,struct net_device * dev)3440 static void ieee80211_end_cac(struct wiphy *wiphy,
3441 			      struct net_device *dev)
3442 {
3443 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3444 	struct ieee80211_local *local = sdata->local;
3445 
3446 	mutex_lock(&local->mtx);
3447 	list_for_each_entry(sdata, &local->interfaces, list) {
3448 		/* it might be waiting for the local->mtx, but then
3449 		 * by the time it gets it, sdata->wdev.cac_started
3450 		 * will no longer be true
3451 		 */
3452 		cancel_delayed_work(&sdata->deflink.dfs_cac_timer_work);
3453 
3454 		if (sdata->wdev.cac_started) {
3455 			ieee80211_link_release_channel(&sdata->deflink);
3456 			sdata->wdev.cac_started = false;
3457 		}
3458 	}
3459 	mutex_unlock(&local->mtx);
3460 }
3461 
3462 static struct cfg80211_beacon_data *
cfg80211_beacon_dup(struct cfg80211_beacon_data * beacon)3463 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3464 {
3465 	struct cfg80211_beacon_data *new_beacon;
3466 	u8 *pos;
3467 	int len;
3468 
3469 	len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3470 	      beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3471 	      beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
3472 
3473 	if (beacon->mbssid_ies)
3474 		len += ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
3475 						       beacon->rnr_ies,
3476 						       beacon->mbssid_ies->cnt);
3477 
3478 	new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3479 	if (!new_beacon)
3480 		return NULL;
3481 
3482 	if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3483 		new_beacon->mbssid_ies =
3484 			kzalloc(struct_size(new_beacon->mbssid_ies,
3485 					    elem, beacon->mbssid_ies->cnt),
3486 				GFP_KERNEL);
3487 		if (!new_beacon->mbssid_ies) {
3488 			kfree(new_beacon);
3489 			return NULL;
3490 		}
3491 
3492 		if (beacon->rnr_ies && beacon->rnr_ies->cnt) {
3493 			new_beacon->rnr_ies =
3494 				kzalloc(struct_size(new_beacon->rnr_ies,
3495 						    elem, beacon->rnr_ies->cnt),
3496 					GFP_KERNEL);
3497 			if (!new_beacon->rnr_ies) {
3498 				kfree(new_beacon->mbssid_ies);
3499 				kfree(new_beacon);
3500 				return NULL;
3501 			}
3502 		}
3503 	}
3504 
3505 	pos = (u8 *)(new_beacon + 1);
3506 	if (beacon->head_len) {
3507 		new_beacon->head_len = beacon->head_len;
3508 		new_beacon->head = pos;
3509 		memcpy(pos, beacon->head, beacon->head_len);
3510 		pos += beacon->head_len;
3511 	}
3512 	if (beacon->tail_len) {
3513 		new_beacon->tail_len = beacon->tail_len;
3514 		new_beacon->tail = pos;
3515 		memcpy(pos, beacon->tail, beacon->tail_len);
3516 		pos += beacon->tail_len;
3517 	}
3518 	if (beacon->beacon_ies_len) {
3519 		new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3520 		new_beacon->beacon_ies = pos;
3521 		memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3522 		pos += beacon->beacon_ies_len;
3523 	}
3524 	if (beacon->proberesp_ies_len) {
3525 		new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3526 		new_beacon->proberesp_ies = pos;
3527 		memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3528 		pos += beacon->proberesp_ies_len;
3529 	}
3530 	if (beacon->assocresp_ies_len) {
3531 		new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3532 		new_beacon->assocresp_ies = pos;
3533 		memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3534 		pos += beacon->assocresp_ies_len;
3535 	}
3536 	if (beacon->probe_resp_len) {
3537 		new_beacon->probe_resp_len = beacon->probe_resp_len;
3538 		new_beacon->probe_resp = pos;
3539 		memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3540 		pos += beacon->probe_resp_len;
3541 	}
3542 	if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
3543 		pos += ieee80211_copy_mbssid_beacon(pos,
3544 						    new_beacon->mbssid_ies,
3545 						    beacon->mbssid_ies);
3546 		if (beacon->rnr_ies && beacon->rnr_ies->cnt)
3547 			pos += ieee80211_copy_rnr_beacon(pos,
3548 							 new_beacon->rnr_ies,
3549 							 beacon->rnr_ies);
3550 	}
3551 
3552 	/* might copy -1, meaning no changes requested */
3553 	new_beacon->ftm_responder = beacon->ftm_responder;
3554 	if (beacon->lci) {
3555 		new_beacon->lci_len = beacon->lci_len;
3556 		new_beacon->lci = pos;
3557 		memcpy(pos, beacon->lci, beacon->lci_len);
3558 		pos += beacon->lci_len;
3559 	}
3560 	if (beacon->civicloc) {
3561 		new_beacon->civicloc_len = beacon->civicloc_len;
3562 		new_beacon->civicloc = pos;
3563 		memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3564 		pos += beacon->civicloc_len;
3565 	}
3566 
3567 	return new_beacon;
3568 }
3569 
ieee80211_csa_finish(struct ieee80211_vif * vif)3570 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3571 {
3572 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3573 	struct ieee80211_local *local = sdata->local;
3574 
3575 	rcu_read_lock();
3576 
3577 	if (vif->mbssid_tx_vif == vif) {
3578 		/* Trigger ieee80211_csa_finish() on the non-transmitting
3579 		 * interfaces when channel switch is received on
3580 		 * transmitting interface
3581 		 */
3582 		struct ieee80211_sub_if_data *iter;
3583 
3584 		list_for_each_entry_rcu(iter, &local->interfaces, list) {
3585 			if (!ieee80211_sdata_running(iter))
3586 				continue;
3587 
3588 			if (iter == sdata || iter->vif.mbssid_tx_vif != vif)
3589 				continue;
3590 
3591 			ieee80211_queue_work(&iter->local->hw,
3592 					     &iter->deflink.csa_finalize_work);
3593 		}
3594 	}
3595 	ieee80211_queue_work(&local->hw, &sdata->deflink.csa_finalize_work);
3596 
3597 	rcu_read_unlock();
3598 }
3599 EXPORT_SYMBOL(ieee80211_csa_finish);
3600 
ieee80211_channel_switch_disconnect(struct ieee80211_vif * vif,bool block_tx)3601 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx)
3602 {
3603 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3604 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3605 	struct ieee80211_local *local = sdata->local;
3606 
3607 	sdata->deflink.csa_block_tx = block_tx;
3608 	sdata_info(sdata, "channel switch failed, disconnecting\n");
3609 	wiphy_work_queue(local->hw.wiphy, &ifmgd->csa_connection_drop_work);
3610 }
3611 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect);
3612 
ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data * sdata,u64 * changed)3613 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3614 					  u64 *changed)
3615 {
3616 	int err;
3617 
3618 	switch (sdata->vif.type) {
3619 	case NL80211_IFTYPE_AP:
3620 		if (!sdata->deflink.u.ap.next_beacon)
3621 			return -EINVAL;
3622 
3623 		err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3624 					      sdata->deflink.u.ap.next_beacon,
3625 					      NULL, NULL, changed);
3626 		ieee80211_free_next_beacon(&sdata->deflink);
3627 
3628 		if (err < 0)
3629 			return err;
3630 		break;
3631 	case NL80211_IFTYPE_ADHOC:
3632 		err = ieee80211_ibss_finish_csa(sdata, changed);
3633 		if (err < 0)
3634 			return err;
3635 		break;
3636 #ifdef CONFIG_MAC80211_MESH
3637 	case NL80211_IFTYPE_MESH_POINT:
3638 		err = ieee80211_mesh_finish_csa(sdata, changed);
3639 		if (err < 0)
3640 			return err;
3641 		break;
3642 #endif
3643 	default:
3644 		WARN_ON(1);
3645 		return -EINVAL;
3646 	}
3647 
3648 	return 0;
3649 }
3650 
__ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)3651 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3652 {
3653 	struct ieee80211_local *local = sdata->local;
3654 	u64 changed = 0;
3655 	int err;
3656 
3657 	sdata_assert_lock(sdata);
3658 	lockdep_assert_held(&local->mtx);
3659 	lockdep_assert_held(&local->chanctx_mtx);
3660 
3661 	/*
3662 	 * using reservation isn't immediate as it may be deferred until later
3663 	 * with multi-vif. once reservation is complete it will re-schedule the
3664 	 * work with no reserved_chanctx so verify chandef to check if it
3665 	 * completed successfully
3666 	 */
3667 
3668 	if (sdata->deflink.reserved_chanctx) {
3669 		/*
3670 		 * with multi-vif csa driver may call ieee80211_csa_finish()
3671 		 * many times while waiting for other interfaces to use their
3672 		 * reservations
3673 		 */
3674 		if (sdata->deflink.reserved_ready)
3675 			return 0;
3676 
3677 		return ieee80211_link_use_reserved_context(&sdata->deflink);
3678 	}
3679 
3680 	if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3681 					&sdata->deflink.csa_chandef))
3682 		return -EINVAL;
3683 
3684 	sdata->vif.bss_conf.csa_active = false;
3685 
3686 	err = ieee80211_set_after_csa_beacon(sdata, &changed);
3687 	if (err)
3688 		return err;
3689 
3690 	if (sdata->vif.bss_conf.eht_puncturing != sdata->vif.bss_conf.csa_punct_bitmap) {
3691 		sdata->vif.bss_conf.eht_puncturing =
3692 					sdata->vif.bss_conf.csa_punct_bitmap;
3693 		changed |= BSS_CHANGED_EHT_PUNCTURING;
3694 	}
3695 
3696 	ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
3697 
3698 	if (sdata->deflink.csa_block_tx) {
3699 		ieee80211_wake_vif_queues(local, sdata,
3700 					  IEEE80211_QUEUE_STOP_REASON_CSA);
3701 		sdata->deflink.csa_block_tx = false;
3702 	}
3703 
3704 	err = drv_post_channel_switch(sdata);
3705 	if (err)
3706 		return err;
3707 
3708 	cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0,
3709 				  sdata->vif.bss_conf.eht_puncturing);
3710 
3711 	return 0;
3712 }
3713 
ieee80211_csa_finalize(struct ieee80211_sub_if_data * sdata)3714 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3715 {
3716 	if (__ieee80211_csa_finalize(sdata)) {
3717 		sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3718 		cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3719 				    GFP_KERNEL);
3720 	}
3721 }
3722 
ieee80211_csa_finalize_work(struct work_struct * work)3723 void ieee80211_csa_finalize_work(struct work_struct *work)
3724 {
3725 	struct ieee80211_sub_if_data *sdata =
3726 		container_of(work, struct ieee80211_sub_if_data,
3727 			     deflink.csa_finalize_work);
3728 	struct ieee80211_local *local = sdata->local;
3729 
3730 	sdata_lock(sdata);
3731 	mutex_lock(&local->mtx);
3732 	mutex_lock(&local->chanctx_mtx);
3733 
3734 	/* AP might have been stopped while waiting for the lock. */
3735 	if (!sdata->vif.bss_conf.csa_active)
3736 		goto unlock;
3737 
3738 	if (!ieee80211_sdata_running(sdata))
3739 		goto unlock;
3740 
3741 	ieee80211_csa_finalize(sdata);
3742 
3743 unlock:
3744 	mutex_unlock(&local->chanctx_mtx);
3745 	mutex_unlock(&local->mtx);
3746 	sdata_unlock(sdata);
3747 }
3748 
ieee80211_set_csa_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_csa_settings * params,u64 * changed)3749 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3750 				    struct cfg80211_csa_settings *params,
3751 				    u64 *changed)
3752 {
3753 	struct ieee80211_csa_settings csa = {};
3754 	int err;
3755 
3756 	switch (sdata->vif.type) {
3757 	case NL80211_IFTYPE_AP:
3758 		sdata->deflink.u.ap.next_beacon =
3759 			cfg80211_beacon_dup(&params->beacon_after);
3760 		if (!sdata->deflink.u.ap.next_beacon)
3761 			return -ENOMEM;
3762 
3763 		/*
3764 		 * With a count of 0, we don't have to wait for any
3765 		 * TBTT before switching, so complete the CSA
3766 		 * immediately.  In theory, with a count == 1 we
3767 		 * should delay the switch until just before the next
3768 		 * TBTT, but that would complicate things so we switch
3769 		 * immediately too.  If we would delay the switch
3770 		 * until the next TBTT, we would have to set the probe
3771 		 * response here.
3772 		 *
3773 		 * TODO: A channel switch with count <= 1 without
3774 		 * sending a CSA action frame is kind of useless,
3775 		 * because the clients won't know we're changing
3776 		 * channels.  The action frame must be implemented
3777 		 * either here or in the userspace.
3778 		 */
3779 		if (params->count <= 1)
3780 			break;
3781 
3782 		if ((params->n_counter_offsets_beacon >
3783 		     IEEE80211_MAX_CNTDWN_COUNTERS_NUM) ||
3784 		    (params->n_counter_offsets_presp >
3785 		     IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) {
3786 			ieee80211_free_next_beacon(&sdata->deflink);
3787 			return -EINVAL;
3788 		}
3789 
3790 		csa.counter_offsets_beacon = params->counter_offsets_beacon;
3791 		csa.counter_offsets_presp = params->counter_offsets_presp;
3792 		csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3793 		csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3794 		csa.count = params->count;
3795 
3796 		err = ieee80211_assign_beacon(sdata, &sdata->deflink,
3797 					      &params->beacon_csa, &csa,
3798 					      NULL, changed);
3799 		if (err < 0) {
3800 			ieee80211_free_next_beacon(&sdata->deflink);
3801 			return err;
3802 		}
3803 
3804 		break;
3805 	case NL80211_IFTYPE_ADHOC:
3806 		if (!sdata->vif.cfg.ibss_joined)
3807 			return -EINVAL;
3808 
3809 		if (params->chandef.width != sdata->u.ibss.chandef.width)
3810 			return -EINVAL;
3811 
3812 		switch (params->chandef.width) {
3813 		case NL80211_CHAN_WIDTH_40:
3814 			if (cfg80211_get_chandef_type(&params->chandef) !=
3815 			    cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3816 				return -EINVAL;
3817 			break;
3818 		case NL80211_CHAN_WIDTH_5:
3819 		case NL80211_CHAN_WIDTH_10:
3820 		case NL80211_CHAN_WIDTH_20_NOHT:
3821 		case NL80211_CHAN_WIDTH_20:
3822 			break;
3823 		default:
3824 			return -EINVAL;
3825 		}
3826 
3827 		/* changes into another band are not supported */
3828 		if (sdata->u.ibss.chandef.chan->band !=
3829 		    params->chandef.chan->band)
3830 			return -EINVAL;
3831 
3832 		/* see comments in the NL80211_IFTYPE_AP block */
3833 		if (params->count > 1) {
3834 			err = ieee80211_ibss_csa_beacon(sdata, params, changed);
3835 			if (err < 0)
3836 				return err;
3837 		}
3838 
3839 		ieee80211_send_action_csa(sdata, params);
3840 
3841 		break;
3842 #ifdef CONFIG_MAC80211_MESH
3843 	case NL80211_IFTYPE_MESH_POINT: {
3844 		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3845 
3846 		/* changes into another band are not supported */
3847 		if (sdata->vif.bss_conf.chandef.chan->band !=
3848 		    params->chandef.chan->band)
3849 			return -EINVAL;
3850 
3851 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3852 			ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3853 			if (!ifmsh->pre_value)
3854 				ifmsh->pre_value = 1;
3855 			else
3856 				ifmsh->pre_value++;
3857 		}
3858 
3859 		/* see comments in the NL80211_IFTYPE_AP block */
3860 		if (params->count > 1) {
3861 			err = ieee80211_mesh_csa_beacon(sdata, params, changed);
3862 			if (err < 0) {
3863 				ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3864 				return err;
3865 			}
3866 		}
3867 
3868 		if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3869 			ieee80211_send_action_csa(sdata, params);
3870 
3871 		break;
3872 		}
3873 #endif
3874 	default:
3875 		return -EOPNOTSUPP;
3876 	}
3877 
3878 	return 0;
3879 }
3880 
ieee80211_color_change_abort(struct ieee80211_sub_if_data * sdata)3881 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data  *sdata)
3882 {
3883 	sdata->vif.bss_conf.color_change_active = false;
3884 
3885 	ieee80211_free_next_beacon(&sdata->deflink);
3886 
3887 	cfg80211_color_change_aborted_notify(sdata->dev);
3888 }
3889 
3890 static int
__ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3891 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3892 			   struct cfg80211_csa_settings *params)
3893 {
3894 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3895 	struct ieee80211_local *local = sdata->local;
3896 	struct ieee80211_channel_switch ch_switch;
3897 	struct ieee80211_chanctx_conf *conf;
3898 	struct ieee80211_chanctx *chanctx;
3899 	u64 changed = 0;
3900 	int err;
3901 
3902 	sdata_assert_lock(sdata);
3903 	lockdep_assert_held(&local->mtx);
3904 
3905 	if (!list_empty(&local->roc_list) || local->scanning)
3906 		return -EBUSY;
3907 
3908 	if (sdata->wdev.cac_started)
3909 		return -EBUSY;
3910 
3911 	if (cfg80211_chandef_identical(&params->chandef,
3912 				       &sdata->vif.bss_conf.chandef))
3913 		return -EINVAL;
3914 
3915 	/* don't allow another channel switch if one is already active. */
3916 	if (sdata->vif.bss_conf.csa_active)
3917 		return -EBUSY;
3918 
3919 	mutex_lock(&local->chanctx_mtx);
3920 	conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf,
3921 					 lockdep_is_held(&local->chanctx_mtx));
3922 	if (!conf) {
3923 		err = -EBUSY;
3924 		goto out;
3925 	}
3926 
3927 	if (params->chandef.chan->freq_offset) {
3928 		/* this may work, but is untested */
3929 		err = -EOPNOTSUPP;
3930 		goto out;
3931 	}
3932 
3933 	chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3934 
3935 	ch_switch.timestamp = 0;
3936 	ch_switch.device_timestamp = 0;
3937 	ch_switch.block_tx = params->block_tx;
3938 	ch_switch.chandef = params->chandef;
3939 	ch_switch.count = params->count;
3940 
3941 	err = drv_pre_channel_switch(sdata, &ch_switch);
3942 	if (err)
3943 		goto out;
3944 
3945 	err = ieee80211_link_reserve_chanctx(&sdata->deflink, &params->chandef,
3946 					     chanctx->mode,
3947 					     params->radar_required);
3948 	if (err)
3949 		goto out;
3950 
3951 	/* if reservation is invalid then this will fail */
3952 	err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3953 	if (err) {
3954 		ieee80211_link_unreserve_chanctx(&sdata->deflink);
3955 		goto out;
3956 	}
3957 
3958 	/* if there is a color change in progress, abort it */
3959 	if (sdata->vif.bss_conf.color_change_active)
3960 		ieee80211_color_change_abort(sdata);
3961 
3962 	err = ieee80211_set_csa_beacon(sdata, params, &changed);
3963 	if (err) {
3964 		ieee80211_link_unreserve_chanctx(&sdata->deflink);
3965 		goto out;
3966 	}
3967 
3968 	if (params->punct_bitmap && !sdata->vif.bss_conf.eht_support)
3969 		goto out;
3970 
3971 	sdata->deflink.csa_chandef = params->chandef;
3972 	sdata->deflink.csa_block_tx = params->block_tx;
3973 	sdata->vif.bss_conf.csa_active = true;
3974 	sdata->vif.bss_conf.csa_punct_bitmap = params->punct_bitmap;
3975 
3976 	if (sdata->deflink.csa_block_tx)
3977 		ieee80211_stop_vif_queues(local, sdata,
3978 					  IEEE80211_QUEUE_STOP_REASON_CSA);
3979 
3980 	cfg80211_ch_switch_started_notify(sdata->dev,
3981 					  &sdata->deflink.csa_chandef, 0,
3982 					  params->count, params->block_tx,
3983 					  sdata->vif.bss_conf.csa_punct_bitmap);
3984 
3985 	if (changed) {
3986 		ieee80211_link_info_change_notify(sdata, &sdata->deflink,
3987 						  changed);
3988 		drv_channel_switch_beacon(sdata, &params->chandef);
3989 	} else {
3990 		/* if the beacon didn't change, we can finalize immediately */
3991 		ieee80211_csa_finalize(sdata);
3992 	}
3993 
3994 out:
3995 	mutex_unlock(&local->chanctx_mtx);
3996 	return err;
3997 }
3998 
ieee80211_channel_switch(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_csa_settings * params)3999 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
4000 			     struct cfg80211_csa_settings *params)
4001 {
4002 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4003 	struct ieee80211_local *local = sdata->local;
4004 	int err;
4005 
4006 	mutex_lock(&local->mtx);
4007 	err = __ieee80211_channel_switch(wiphy, dev, params);
4008 	mutex_unlock(&local->mtx);
4009 
4010 	return err;
4011 }
4012 
ieee80211_mgmt_tx_cookie(struct ieee80211_local * local)4013 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
4014 {
4015 	lockdep_assert_held(&local->mtx);
4016 
4017 	local->roc_cookie_counter++;
4018 
4019 	/* wow, you wrapped 64 bits ... more likely a bug */
4020 	if (WARN_ON(local->roc_cookie_counter == 0))
4021 		local->roc_cookie_counter++;
4022 
4023 	return local->roc_cookie_counter;
4024 }
4025 
ieee80211_attach_ack_skb(struct ieee80211_local * local,struct sk_buff * skb,u64 * cookie,gfp_t gfp)4026 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
4027 			     u64 *cookie, gfp_t gfp)
4028 {
4029 	unsigned long spin_flags;
4030 	struct sk_buff *ack_skb;
4031 	int id;
4032 
4033 	ack_skb = skb_copy(skb, gfp);
4034 	if (!ack_skb)
4035 		return -ENOMEM;
4036 
4037 	spin_lock_irqsave(&local->ack_status_lock, spin_flags);
4038 	id = idr_alloc(&local->ack_status_frames, ack_skb,
4039 		       1, 0x2000, GFP_ATOMIC);
4040 	spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
4041 
4042 	if (id < 0) {
4043 		kfree_skb(ack_skb);
4044 		return -ENOMEM;
4045 	}
4046 
4047 	IEEE80211_SKB_CB(skb)->ack_frame_id = id;
4048 
4049 	*cookie = ieee80211_mgmt_tx_cookie(local);
4050 	IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
4051 
4052 	return 0;
4053 }
4054 
4055 static void
ieee80211_update_mgmt_frame_registrations(struct wiphy * wiphy,struct wireless_dev * wdev,struct mgmt_frame_regs * upd)4056 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy,
4057 					  struct wireless_dev *wdev,
4058 					  struct mgmt_frame_regs *upd)
4059 {
4060 	struct ieee80211_local *local = wiphy_priv(wiphy);
4061 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4062 	u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4);
4063 	u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4);
4064 	bool global_change, intf_change;
4065 
4066 	global_change =
4067 		(local->probe_req_reg != !!(upd->global_stypes & preq_mask)) ||
4068 		(local->rx_mcast_action_reg !=
4069 		 !!(upd->global_mcast_stypes & action_mask));
4070 	local->probe_req_reg = upd->global_stypes & preq_mask;
4071 	local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask;
4072 
4073 	intf_change = (sdata->vif.probe_req_reg !=
4074 		       !!(upd->interface_stypes & preq_mask)) ||
4075 		(sdata->vif.rx_mcast_action_reg !=
4076 		 !!(upd->interface_mcast_stypes & action_mask));
4077 	sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask;
4078 	sdata->vif.rx_mcast_action_reg =
4079 		upd->interface_mcast_stypes & action_mask;
4080 
4081 	if (!local->open_count)
4082 		return;
4083 
4084 	if (intf_change && ieee80211_sdata_running(sdata))
4085 		drv_config_iface_filter(local, sdata,
4086 					sdata->vif.probe_req_reg ?
4087 						FIF_PROBE_REQ : 0,
4088 					FIF_PROBE_REQ);
4089 
4090 	if (global_change)
4091 		ieee80211_configure_filter(local);
4092 }
4093 
ieee80211_set_antenna(struct wiphy * wiphy,u32 tx_ant,u32 rx_ant)4094 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
4095 {
4096 	struct ieee80211_local *local = wiphy_priv(wiphy);
4097 
4098 	if (local->started)
4099 		return -EOPNOTSUPP;
4100 
4101 	return drv_set_antenna(local, tx_ant, rx_ant);
4102 }
4103 
ieee80211_get_antenna(struct wiphy * wiphy,u32 * tx_ant,u32 * rx_ant)4104 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
4105 {
4106 	struct ieee80211_local *local = wiphy_priv(wiphy);
4107 
4108 	return drv_get_antenna(local, tx_ant, rx_ant);
4109 }
4110 
ieee80211_set_rekey_data(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_gtk_rekey_data * data)4111 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
4112 				    struct net_device *dev,
4113 				    struct cfg80211_gtk_rekey_data *data)
4114 {
4115 	struct ieee80211_local *local = wiphy_priv(wiphy);
4116 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4117 
4118 	if (!local->ops->set_rekey_data)
4119 		return -EOPNOTSUPP;
4120 
4121 	drv_set_rekey_data(local, sdata, data);
4122 
4123 	return 0;
4124 }
4125 
ieee80211_probe_client(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u64 * cookie)4126 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
4127 				  const u8 *peer, u64 *cookie)
4128 {
4129 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4130 	struct ieee80211_local *local = sdata->local;
4131 	struct ieee80211_qos_hdr *nullfunc;
4132 	struct sk_buff *skb;
4133 	int size = sizeof(*nullfunc);
4134 	__le16 fc;
4135 	bool qos;
4136 	struct ieee80211_tx_info *info;
4137 	struct sta_info *sta;
4138 	struct ieee80211_chanctx_conf *chanctx_conf;
4139 	enum nl80211_band band;
4140 	int ret;
4141 
4142 	/* the lock is needed to assign the cookie later */
4143 	mutex_lock(&local->mtx);
4144 
4145 	rcu_read_lock();
4146 	sta = sta_info_get_bss(sdata, peer);
4147 	if (!sta) {
4148 		ret = -ENOLINK;
4149 		goto unlock;
4150 	}
4151 
4152 	qos = sta->sta.wme;
4153 
4154 	chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf);
4155 	if (WARN_ON(!chanctx_conf)) {
4156 		ret = -EINVAL;
4157 		goto unlock;
4158 	}
4159 	band = chanctx_conf->def.chan->band;
4160 
4161 	if (qos) {
4162 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4163 				 IEEE80211_STYPE_QOS_NULLFUNC |
4164 				 IEEE80211_FCTL_FROMDS);
4165 	} else {
4166 		size -= 2;
4167 		fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
4168 				 IEEE80211_STYPE_NULLFUNC |
4169 				 IEEE80211_FCTL_FROMDS);
4170 	}
4171 
4172 	skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
4173 	if (!skb) {
4174 		ret = -ENOMEM;
4175 		goto unlock;
4176 	}
4177 
4178 	skb->dev = dev;
4179 
4180 	skb_reserve(skb, local->hw.extra_tx_headroom);
4181 
4182 	nullfunc = skb_put(skb, size);
4183 	nullfunc->frame_control = fc;
4184 	nullfunc->duration_id = 0;
4185 	memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
4186 	memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
4187 	memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
4188 	nullfunc->seq_ctrl = 0;
4189 
4190 	info = IEEE80211_SKB_CB(skb);
4191 
4192 	info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
4193 		       IEEE80211_TX_INTFL_NL80211_FRAME_TX;
4194 	info->band = band;
4195 
4196 	skb_set_queue_mapping(skb, IEEE80211_AC_VO);
4197 	skb->priority = 7;
4198 	if (qos)
4199 		nullfunc->qos_ctrl = cpu_to_le16(7);
4200 
4201 	ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
4202 	if (ret) {
4203 		kfree_skb(skb);
4204 		goto unlock;
4205 	}
4206 
4207 	local_bh_disable();
4208 	ieee80211_xmit(sdata, sta, skb);
4209 	local_bh_enable();
4210 
4211 	ret = 0;
4212 unlock:
4213 	rcu_read_unlock();
4214 	mutex_unlock(&local->mtx);
4215 
4216 	return ret;
4217 }
4218 
ieee80211_cfg_get_channel(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id,struct cfg80211_chan_def * chandef)4219 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
4220 				     struct wireless_dev *wdev,
4221 				     unsigned int link_id,
4222 				     struct cfg80211_chan_def *chandef)
4223 {
4224 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4225 	struct ieee80211_local *local = wiphy_priv(wiphy);
4226 	struct ieee80211_chanctx_conf *chanctx_conf;
4227 	struct ieee80211_link_data *link;
4228 	int ret = -ENODATA;
4229 
4230 	rcu_read_lock();
4231 	link = rcu_dereference(sdata->link[link_id]);
4232 	if (!link) {
4233 		ret = -ENOLINK;
4234 		goto out;
4235 	}
4236 
4237 	chanctx_conf = rcu_dereference(link->conf->chanctx_conf);
4238 	if (chanctx_conf) {
4239 		*chandef = link->conf->chandef;
4240 		ret = 0;
4241 	} else if (local->open_count > 0 &&
4242 		   local->open_count == local->monitors &&
4243 		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
4244 		if (local->use_chanctx)
4245 			*chandef = local->monitor_chandef;
4246 		else
4247 			*chandef = local->_oper_chandef;
4248 		ret = 0;
4249 	}
4250 out:
4251 	rcu_read_unlock();
4252 
4253 	return ret;
4254 }
4255 
4256 #ifdef CONFIG_PM
ieee80211_set_wakeup(struct wiphy * wiphy,bool enabled)4257 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
4258 {
4259 	drv_set_wakeup(wiphy_priv(wiphy), enabled);
4260 }
4261 #endif
4262 
ieee80211_set_qos_map(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_qos_map * qos_map)4263 static int ieee80211_set_qos_map(struct wiphy *wiphy,
4264 				 struct net_device *dev,
4265 				 struct cfg80211_qos_map *qos_map)
4266 {
4267 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4268 	struct mac80211_qos_map *new_qos_map, *old_qos_map;
4269 
4270 	if (qos_map) {
4271 		new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
4272 		if (!new_qos_map)
4273 			return -ENOMEM;
4274 		memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
4275 	} else {
4276 		/* A NULL qos_map was passed to disable QoS mapping */
4277 		new_qos_map = NULL;
4278 	}
4279 
4280 	old_qos_map = sdata_dereference(sdata->qos_map, sdata);
4281 	rcu_assign_pointer(sdata->qos_map, new_qos_map);
4282 	if (old_qos_map)
4283 		kfree_rcu(old_qos_map, rcu_head);
4284 
4285 	return 0;
4286 }
4287 
ieee80211_set_ap_chanwidth(struct wiphy * wiphy,struct net_device * dev,unsigned int link_id,struct cfg80211_chan_def * chandef)4288 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
4289 				      struct net_device *dev,
4290 				      unsigned int link_id,
4291 				      struct cfg80211_chan_def *chandef)
4292 {
4293 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4294 	struct ieee80211_link_data *link;
4295 	int ret;
4296 	u64 changed = 0;
4297 
4298 	link = sdata_dereference(sdata->link[link_id], sdata);
4299 
4300 	ret = ieee80211_link_change_bandwidth(link, chandef, &changed);
4301 	if (ret == 0)
4302 		ieee80211_link_info_change_notify(sdata, link, changed);
4303 
4304 	return ret;
4305 }
4306 
ieee80211_add_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer,u8 up,u16 admitted_time)4307 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4308 			       u8 tsid, const u8 *peer, u8 up,
4309 			       u16 admitted_time)
4310 {
4311 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4312 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4313 	int ac = ieee802_1d_to_ac[up];
4314 
4315 	if (sdata->vif.type != NL80211_IFTYPE_STATION)
4316 		return -EOPNOTSUPP;
4317 
4318 	if (!(sdata->wmm_acm & BIT(up)))
4319 		return -EINVAL;
4320 
4321 	if (ifmgd->tx_tspec[ac].admitted_time)
4322 		return -EBUSY;
4323 
4324 	if (admitted_time) {
4325 		ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
4326 		ifmgd->tx_tspec[ac].tsid = tsid;
4327 		ifmgd->tx_tspec[ac].up = up;
4328 	}
4329 
4330 	return 0;
4331 }
4332 
ieee80211_del_tx_ts(struct wiphy * wiphy,struct net_device * dev,u8 tsid,const u8 * peer)4333 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
4334 			       u8 tsid, const u8 *peer)
4335 {
4336 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4337 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4338 	struct ieee80211_local *local = wiphy_priv(wiphy);
4339 	int ac;
4340 
4341 	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4342 		struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
4343 
4344 		/* skip unused entries */
4345 		if (!tx_tspec->admitted_time)
4346 			continue;
4347 
4348 		if (tx_tspec->tsid != tsid)
4349 			continue;
4350 
4351 		/* due to this new packets will be reassigned to non-ACM ACs */
4352 		tx_tspec->up = -1;
4353 
4354 		/* Make sure that all packets have been sent to avoid to
4355 		 * restore the QoS params on packets that are still on the
4356 		 * queues.
4357 		 */
4358 		synchronize_net();
4359 		ieee80211_flush_queues(local, sdata, false);
4360 
4361 		/* restore the normal QoS parameters
4362 		 * (unconditionally to avoid races)
4363 		 */
4364 		tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
4365 		tx_tspec->downgraded = false;
4366 		ieee80211_sta_handle_tspec_ac_params(sdata);
4367 
4368 		/* finally clear all the data */
4369 		memset(tx_tspec, 0, sizeof(*tx_tspec));
4370 
4371 		return 0;
4372 	}
4373 
4374 	return -ENOENT;
4375 }
4376 
ieee80211_nan_func_terminated(struct ieee80211_vif * vif,u8 inst_id,enum nl80211_nan_func_term_reason reason,gfp_t gfp)4377 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
4378 				   u8 inst_id,
4379 				   enum nl80211_nan_func_term_reason reason,
4380 				   gfp_t gfp)
4381 {
4382 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4383 	struct cfg80211_nan_func *func;
4384 	u64 cookie;
4385 
4386 	if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4387 		return;
4388 
4389 	spin_lock_bh(&sdata->u.nan.func_lock);
4390 
4391 	func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
4392 	if (WARN_ON(!func)) {
4393 		spin_unlock_bh(&sdata->u.nan.func_lock);
4394 		return;
4395 	}
4396 
4397 	cookie = func->cookie;
4398 	idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
4399 
4400 	spin_unlock_bh(&sdata->u.nan.func_lock);
4401 
4402 	cfg80211_free_nan_func(func);
4403 
4404 	cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
4405 				     reason, cookie, gfp);
4406 }
4407 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
4408 
ieee80211_nan_func_match(struct ieee80211_vif * vif,struct cfg80211_nan_match_params * match,gfp_t gfp)4409 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
4410 			      struct cfg80211_nan_match_params *match,
4411 			      gfp_t gfp)
4412 {
4413 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4414 	struct cfg80211_nan_func *func;
4415 
4416 	if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
4417 		return;
4418 
4419 	spin_lock_bh(&sdata->u.nan.func_lock);
4420 
4421 	func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
4422 	if (WARN_ON(!func)) {
4423 		spin_unlock_bh(&sdata->u.nan.func_lock);
4424 		return;
4425 	}
4426 	match->cookie = func->cookie;
4427 
4428 	spin_unlock_bh(&sdata->u.nan.func_lock);
4429 
4430 	cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
4431 }
4432 EXPORT_SYMBOL(ieee80211_nan_func_match);
4433 
ieee80211_set_multicast_to_unicast(struct wiphy * wiphy,struct net_device * dev,const bool enabled)4434 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
4435 					      struct net_device *dev,
4436 					      const bool enabled)
4437 {
4438 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4439 
4440 	sdata->u.ap.multicast_to_unicast = enabled;
4441 
4442 	return 0;
4443 }
4444 
ieee80211_fill_txq_stats(struct cfg80211_txq_stats * txqstats,struct txq_info * txqi)4445 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
4446 			      struct txq_info *txqi)
4447 {
4448 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
4449 		txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
4450 		txqstats->backlog_bytes = txqi->tin.backlog_bytes;
4451 	}
4452 
4453 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
4454 		txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
4455 		txqstats->backlog_packets = txqi->tin.backlog_packets;
4456 	}
4457 
4458 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
4459 		txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
4460 		txqstats->flows = txqi->tin.flows;
4461 	}
4462 
4463 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
4464 		txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
4465 		txqstats->drops = txqi->cstats.drop_count;
4466 	}
4467 
4468 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
4469 		txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
4470 		txqstats->ecn_marks = txqi->cstats.ecn_mark;
4471 	}
4472 
4473 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
4474 		txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
4475 		txqstats->overlimit = txqi->tin.overlimit;
4476 	}
4477 
4478 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
4479 		txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
4480 		txqstats->collisions = txqi->tin.collisions;
4481 	}
4482 
4483 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
4484 		txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
4485 		txqstats->tx_bytes = txqi->tin.tx_bytes;
4486 	}
4487 
4488 	if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
4489 		txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
4490 		txqstats->tx_packets = txqi->tin.tx_packets;
4491 	}
4492 }
4493 
ieee80211_get_txq_stats(struct wiphy * wiphy,struct wireless_dev * wdev,struct cfg80211_txq_stats * txqstats)4494 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
4495 				   struct wireless_dev *wdev,
4496 				   struct cfg80211_txq_stats *txqstats)
4497 {
4498 	struct ieee80211_local *local = wiphy_priv(wiphy);
4499 	struct ieee80211_sub_if_data *sdata;
4500 	int ret = 0;
4501 
4502 	spin_lock_bh(&local->fq.lock);
4503 	rcu_read_lock();
4504 
4505 	if (wdev) {
4506 		sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4507 		if (!sdata->vif.txq) {
4508 			ret = 1;
4509 			goto out;
4510 		}
4511 		ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
4512 	} else {
4513 		/* phy stats */
4514 		txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
4515 				    BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
4516 				    BIT(NL80211_TXQ_STATS_OVERLIMIT) |
4517 				    BIT(NL80211_TXQ_STATS_OVERMEMORY) |
4518 				    BIT(NL80211_TXQ_STATS_COLLISIONS) |
4519 				    BIT(NL80211_TXQ_STATS_MAX_FLOWS);
4520 		txqstats->backlog_packets = local->fq.backlog;
4521 		txqstats->backlog_bytes = local->fq.memory_usage;
4522 		txqstats->overlimit = local->fq.overlimit;
4523 		txqstats->overmemory = local->fq.overmemory;
4524 		txqstats->collisions = local->fq.collisions;
4525 		txqstats->max_flows = local->fq.flows_cnt;
4526 	}
4527 
4528 out:
4529 	rcu_read_unlock();
4530 	spin_unlock_bh(&local->fq.lock);
4531 
4532 	return ret;
4533 }
4534 
4535 static int
ieee80211_get_ftm_responder_stats(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ftm_responder_stats * ftm_stats)4536 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
4537 				  struct net_device *dev,
4538 				  struct cfg80211_ftm_responder_stats *ftm_stats)
4539 {
4540 	struct ieee80211_local *local = wiphy_priv(wiphy);
4541 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4542 
4543 	return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
4544 }
4545 
4546 static int
ieee80211_start_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4547 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4548 		     struct cfg80211_pmsr_request *request)
4549 {
4550 	struct ieee80211_local *local = wiphy_priv(wiphy);
4551 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4552 
4553 	return drv_start_pmsr(local, sdata, request);
4554 }
4555 
4556 static void
ieee80211_abort_pmsr(struct wiphy * wiphy,struct wireless_dev * dev,struct cfg80211_pmsr_request * request)4557 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
4558 		     struct cfg80211_pmsr_request *request)
4559 {
4560 	struct ieee80211_local *local = wiphy_priv(wiphy);
4561 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
4562 
4563 	return drv_abort_pmsr(local, sdata, request);
4564 }
4565 
ieee80211_set_tid_config(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_tid_config * tid_conf)4566 static int ieee80211_set_tid_config(struct wiphy *wiphy,
4567 				    struct net_device *dev,
4568 				    struct cfg80211_tid_config *tid_conf)
4569 {
4570 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4571 	struct sta_info *sta;
4572 	int ret;
4573 
4574 	if (!sdata->local->ops->set_tid_config)
4575 		return -EOPNOTSUPP;
4576 
4577 	if (!tid_conf->peer)
4578 		return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf);
4579 
4580 	mutex_lock(&sdata->local->sta_mtx);
4581 	sta = sta_info_get_bss(sdata, tid_conf->peer);
4582 	if (!sta) {
4583 		mutex_unlock(&sdata->local->sta_mtx);
4584 		return -ENOENT;
4585 	}
4586 
4587 	ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf);
4588 	mutex_unlock(&sdata->local->sta_mtx);
4589 
4590 	return ret;
4591 }
4592 
ieee80211_reset_tid_config(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,u8 tids)4593 static int ieee80211_reset_tid_config(struct wiphy *wiphy,
4594 				      struct net_device *dev,
4595 				      const u8 *peer, u8 tids)
4596 {
4597 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4598 	struct sta_info *sta;
4599 	int ret;
4600 
4601 	if (!sdata->local->ops->reset_tid_config)
4602 		return -EOPNOTSUPP;
4603 
4604 	if (!peer)
4605 		return drv_reset_tid_config(sdata->local, sdata, NULL, tids);
4606 
4607 	mutex_lock(&sdata->local->sta_mtx);
4608 	sta = sta_info_get_bss(sdata, peer);
4609 	if (!sta) {
4610 		mutex_unlock(&sdata->local->sta_mtx);
4611 		return -ENOENT;
4612 	}
4613 
4614 	ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids);
4615 	mutex_unlock(&sdata->local->sta_mtx);
4616 
4617 	return ret;
4618 }
4619 
ieee80211_set_sar_specs(struct wiphy * wiphy,struct cfg80211_sar_specs * sar)4620 static int ieee80211_set_sar_specs(struct wiphy *wiphy,
4621 				   struct cfg80211_sar_specs *sar)
4622 {
4623 	struct ieee80211_local *local = wiphy_priv(wiphy);
4624 
4625 	if (!local->ops->set_sar_specs)
4626 		return -EOPNOTSUPP;
4627 
4628 	return local->ops->set_sar_specs(&local->hw, sar);
4629 }
4630 
4631 static int
ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data * sdata,u64 * changed)4632 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4633 					u64 *changed)
4634 {
4635 	switch (sdata->vif.type) {
4636 	case NL80211_IFTYPE_AP: {
4637 		int ret;
4638 
4639 		if (!sdata->deflink.u.ap.next_beacon)
4640 			return -EINVAL;
4641 
4642 		ret = ieee80211_assign_beacon(sdata, &sdata->deflink,
4643 					      sdata->deflink.u.ap.next_beacon,
4644 					      NULL, NULL, changed);
4645 		ieee80211_free_next_beacon(&sdata->deflink);
4646 
4647 		if (ret < 0)
4648 			return ret;
4649 
4650 		break;
4651 	}
4652 	default:
4653 		WARN_ON_ONCE(1);
4654 		return -EINVAL;
4655 	}
4656 
4657 	return 0;
4658 }
4659 
4660 static int
ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data * sdata,struct cfg80211_color_change_settings * params,u64 * changed)4661 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata,
4662 				  struct cfg80211_color_change_settings *params,
4663 				  u64 *changed)
4664 {
4665 	struct ieee80211_color_change_settings color_change = {};
4666 	int err;
4667 
4668 	switch (sdata->vif.type) {
4669 	case NL80211_IFTYPE_AP:
4670 		sdata->deflink.u.ap.next_beacon =
4671 			cfg80211_beacon_dup(&params->beacon_next);
4672 		if (!sdata->deflink.u.ap.next_beacon)
4673 			return -ENOMEM;
4674 
4675 		if (params->count <= 1)
4676 			break;
4677 
4678 		color_change.counter_offset_beacon =
4679 			params->counter_offset_beacon;
4680 		color_change.counter_offset_presp =
4681 			params->counter_offset_presp;
4682 		color_change.count = params->count;
4683 
4684 		err = ieee80211_assign_beacon(sdata, &sdata->deflink,
4685 					      &params->beacon_color_change,
4686 					      NULL, &color_change, changed);
4687 		if (err < 0) {
4688 			ieee80211_free_next_beacon(&sdata->deflink);
4689 			return err;
4690 		}
4691 		break;
4692 	default:
4693 		return -EOPNOTSUPP;
4694 	}
4695 
4696 	return 0;
4697 }
4698 
4699 static void
ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data * sdata,u8 color,int enable,u64 changed)4700 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata,
4701 					 u8 color, int enable, u64 changed)
4702 {
4703 	sdata->vif.bss_conf.he_bss_color.color = color;
4704 	sdata->vif.bss_conf.he_bss_color.enabled = enable;
4705 	changed |= BSS_CHANGED_HE_BSS_COLOR;
4706 
4707 	ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed);
4708 
4709 	if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) {
4710 		struct ieee80211_sub_if_data *child;
4711 
4712 		mutex_lock(&sdata->local->iflist_mtx);
4713 		list_for_each_entry(child, &sdata->local->interfaces, list) {
4714 			if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) {
4715 				child->vif.bss_conf.he_bss_color.color = color;
4716 				child->vif.bss_conf.he_bss_color.enabled = enable;
4717 				ieee80211_link_info_change_notify(child,
4718 								  &child->deflink,
4719 								  BSS_CHANGED_HE_BSS_COLOR);
4720 			}
4721 		}
4722 		mutex_unlock(&sdata->local->iflist_mtx);
4723 	}
4724 }
4725 
ieee80211_color_change_finalize(struct ieee80211_sub_if_data * sdata)4726 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata)
4727 {
4728 	struct ieee80211_local *local = sdata->local;
4729 	u64 changed = 0;
4730 	int err;
4731 
4732 	sdata_assert_lock(sdata);
4733 	lockdep_assert_held(&local->mtx);
4734 
4735 	sdata->vif.bss_conf.color_change_active = false;
4736 
4737 	err = ieee80211_set_after_color_change_beacon(sdata, &changed);
4738 	if (err) {
4739 		cfg80211_color_change_aborted_notify(sdata->dev);
4740 		return err;
4741 	}
4742 
4743 	ieee80211_color_change_bss_config_notify(sdata,
4744 						 sdata->vif.bss_conf.color_change_color,
4745 						 1, changed);
4746 	cfg80211_color_change_notify(sdata->dev);
4747 
4748 	return 0;
4749 }
4750 
ieee80211_color_change_finalize_work(struct work_struct * work)4751 void ieee80211_color_change_finalize_work(struct work_struct *work)
4752 {
4753 	struct ieee80211_sub_if_data *sdata =
4754 		container_of(work, struct ieee80211_sub_if_data,
4755 			     deflink.color_change_finalize_work);
4756 	struct ieee80211_local *local = sdata->local;
4757 
4758 	sdata_lock(sdata);
4759 	mutex_lock(&local->mtx);
4760 
4761 	/* AP might have been stopped while waiting for the lock. */
4762 	if (!sdata->vif.bss_conf.color_change_active)
4763 		goto unlock;
4764 
4765 	if (!ieee80211_sdata_running(sdata))
4766 		goto unlock;
4767 
4768 	ieee80211_color_change_finalize(sdata);
4769 
4770 unlock:
4771 	mutex_unlock(&local->mtx);
4772 	sdata_unlock(sdata);
4773 }
4774 
ieee80211_color_collision_detection_work(struct work_struct * work)4775 void ieee80211_color_collision_detection_work(struct work_struct *work)
4776 {
4777 	struct delayed_work *delayed_work = to_delayed_work(work);
4778 	struct ieee80211_link_data *link =
4779 		container_of(delayed_work, struct ieee80211_link_data,
4780 			     color_collision_detect_work);
4781 	struct ieee80211_sub_if_data *sdata = link->sdata;
4782 
4783 	sdata_lock(sdata);
4784 	cfg80211_obss_color_collision_notify(sdata->dev, link->color_bitmap);
4785 	sdata_unlock(sdata);
4786 }
4787 
ieee80211_color_change_finish(struct ieee80211_vif * vif)4788 void ieee80211_color_change_finish(struct ieee80211_vif *vif)
4789 {
4790 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4791 
4792 	ieee80211_queue_work(&sdata->local->hw,
4793 			     &sdata->deflink.color_change_finalize_work);
4794 }
4795 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish);
4796 
4797 void
ieee80211_obss_color_collision_notify(struct ieee80211_vif * vif,u64 color_bitmap,gfp_t gfp)4798 ieee80211_obss_color_collision_notify(struct ieee80211_vif *vif,
4799 				       u64 color_bitmap, gfp_t gfp)
4800 {
4801 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4802 	struct ieee80211_link_data *link = &sdata->deflink;
4803 
4804 	if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active)
4805 		return;
4806 
4807 	if (delayed_work_pending(&link->color_collision_detect_work))
4808 		return;
4809 
4810 	link->color_bitmap = color_bitmap;
4811 	/* queue the color collision detection event every 500 ms in order to
4812 	 * avoid sending too much netlink messages to userspace.
4813 	 */
4814 	ieee80211_queue_delayed_work(&sdata->local->hw,
4815 				     &link->color_collision_detect_work,
4816 				     msecs_to_jiffies(500));
4817 }
4818 EXPORT_SYMBOL_GPL(ieee80211_obss_color_collision_notify);
4819 
4820 static int
ieee80211_color_change(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_color_change_settings * params)4821 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev,
4822 		       struct cfg80211_color_change_settings *params)
4823 {
4824 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4825 	struct ieee80211_local *local = sdata->local;
4826 	u64 changed = 0;
4827 	int err;
4828 
4829 	sdata_assert_lock(sdata);
4830 
4831 	if (sdata->vif.bss_conf.nontransmitted)
4832 		return -EINVAL;
4833 
4834 	mutex_lock(&local->mtx);
4835 
4836 	/* don't allow another color change if one is already active or if csa
4837 	 * is active
4838 	 */
4839 	if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) {
4840 		err = -EBUSY;
4841 		goto out;
4842 	}
4843 
4844 	err = ieee80211_set_color_change_beacon(sdata, params, &changed);
4845 	if (err)
4846 		goto out;
4847 
4848 	sdata->vif.bss_conf.color_change_active = true;
4849 	sdata->vif.bss_conf.color_change_color = params->color;
4850 
4851 	cfg80211_color_change_started_notify(sdata->dev, params->count);
4852 
4853 	if (changed)
4854 		ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed);
4855 	else
4856 		/* if the beacon didn't change, we can finalize immediately */
4857 		ieee80211_color_change_finalize(sdata);
4858 
4859 out:
4860 	mutex_unlock(&local->mtx);
4861 
4862 	return err;
4863 }
4864 
4865 static int
ieee80211_set_radar_background(struct wiphy * wiphy,struct cfg80211_chan_def * chandef)4866 ieee80211_set_radar_background(struct wiphy *wiphy,
4867 			       struct cfg80211_chan_def *chandef)
4868 {
4869 	struct ieee80211_local *local = wiphy_priv(wiphy);
4870 
4871 	if (!local->ops->set_radar_background)
4872 		return -EOPNOTSUPP;
4873 
4874 	return local->ops->set_radar_background(&local->hw, chandef);
4875 }
4876 
ieee80211_add_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)4877 static int ieee80211_add_intf_link(struct wiphy *wiphy,
4878 				   struct wireless_dev *wdev,
4879 				   unsigned int link_id)
4880 {
4881 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4882 	int res;
4883 
4884 	if (wdev->use_4addr)
4885 		return -EOPNOTSUPP;
4886 
4887 	mutex_lock(&sdata->local->mtx);
4888 	res = ieee80211_vif_set_links(sdata, wdev->valid_links, 0);
4889 	mutex_unlock(&sdata->local->mtx);
4890 
4891 	return res;
4892 }
4893 
ieee80211_del_intf_link(struct wiphy * wiphy,struct wireless_dev * wdev,unsigned int link_id)4894 static void ieee80211_del_intf_link(struct wiphy *wiphy,
4895 				    struct wireless_dev *wdev,
4896 				    unsigned int link_id)
4897 {
4898 	struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
4899 
4900 	mutex_lock(&sdata->local->mtx);
4901 	ieee80211_vif_set_links(sdata, wdev->valid_links, 0);
4902 	mutex_unlock(&sdata->local->mtx);
4903 }
4904 
sta_add_link_station(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct link_station_parameters * params)4905 static int sta_add_link_station(struct ieee80211_local *local,
4906 				struct ieee80211_sub_if_data *sdata,
4907 				struct link_station_parameters *params)
4908 {
4909 	struct sta_info *sta;
4910 	int ret;
4911 
4912 	sta = sta_info_get_bss(sdata, params->mld_mac);
4913 	if (!sta)
4914 		return -ENOENT;
4915 
4916 	if (!sta->sta.valid_links)
4917 		return -EINVAL;
4918 
4919 	if (sta->sta.valid_links & BIT(params->link_id))
4920 		return -EALREADY;
4921 
4922 	ret = ieee80211_sta_allocate_link(sta, params->link_id);
4923 	if (ret)
4924 		return ret;
4925 
4926 	ret = sta_link_apply_parameters(local, sta, true, params);
4927 	if (ret) {
4928 		ieee80211_sta_free_link(sta, params->link_id);
4929 		return ret;
4930 	}
4931 
4932 	/* ieee80211_sta_activate_link frees the link upon failure */
4933 	return ieee80211_sta_activate_link(sta, params->link_id);
4934 }
4935 
4936 static int
ieee80211_add_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)4937 ieee80211_add_link_station(struct wiphy *wiphy, struct net_device *dev,
4938 			   struct link_station_parameters *params)
4939 {
4940 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4941 	struct ieee80211_local *local = wiphy_priv(wiphy);
4942 	int ret;
4943 
4944 	mutex_lock(&sdata->local->sta_mtx);
4945 	ret = sta_add_link_station(local, sdata, params);
4946 	mutex_unlock(&sdata->local->sta_mtx);
4947 
4948 	return ret;
4949 }
4950 
sta_mod_link_station(struct ieee80211_local * local,struct ieee80211_sub_if_data * sdata,struct link_station_parameters * params)4951 static int sta_mod_link_station(struct ieee80211_local *local,
4952 				struct ieee80211_sub_if_data *sdata,
4953 				struct link_station_parameters *params)
4954 {
4955 	struct sta_info *sta;
4956 
4957 	sta = sta_info_get_bss(sdata, params->mld_mac);
4958 	if (!sta)
4959 		return -ENOENT;
4960 
4961 	if (!(sta->sta.valid_links & BIT(params->link_id)))
4962 		return -EINVAL;
4963 
4964 	return sta_link_apply_parameters(local, sta, false, params);
4965 }
4966 
4967 static int
ieee80211_mod_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_parameters * params)4968 ieee80211_mod_link_station(struct wiphy *wiphy, struct net_device *dev,
4969 			   struct link_station_parameters *params)
4970 {
4971 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
4972 	struct ieee80211_local *local = wiphy_priv(wiphy);
4973 	int ret;
4974 
4975 	mutex_lock(&sdata->local->sta_mtx);
4976 	ret = sta_mod_link_station(local, sdata, params);
4977 	mutex_unlock(&sdata->local->sta_mtx);
4978 
4979 	return ret;
4980 }
4981 
sta_del_link_station(struct ieee80211_sub_if_data * sdata,struct link_station_del_parameters * params)4982 static int sta_del_link_station(struct ieee80211_sub_if_data *sdata,
4983 				struct link_station_del_parameters *params)
4984 {
4985 	struct sta_info *sta;
4986 
4987 	sta = sta_info_get_bss(sdata, params->mld_mac);
4988 	if (!sta)
4989 		return -ENOENT;
4990 
4991 	if (!(sta->sta.valid_links & BIT(params->link_id)))
4992 		return -EINVAL;
4993 
4994 	/* must not create a STA without links */
4995 	if (sta->sta.valid_links == BIT(params->link_id))
4996 		return -EINVAL;
4997 
4998 	ieee80211_sta_remove_link(sta, params->link_id);
4999 
5000 	return 0;
5001 }
5002 
5003 static int
ieee80211_del_link_station(struct wiphy * wiphy,struct net_device * dev,struct link_station_del_parameters * params)5004 ieee80211_del_link_station(struct wiphy *wiphy, struct net_device *dev,
5005 			   struct link_station_del_parameters *params)
5006 {
5007 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5008 	int ret;
5009 
5010 	mutex_lock(&sdata->local->sta_mtx);
5011 	ret = sta_del_link_station(sdata, params);
5012 	mutex_unlock(&sdata->local->sta_mtx);
5013 
5014 	return ret;
5015 }
5016 
ieee80211_set_hw_timestamp(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_set_hw_timestamp * hwts)5017 static int ieee80211_set_hw_timestamp(struct wiphy *wiphy,
5018 				      struct net_device *dev,
5019 				      struct cfg80211_set_hw_timestamp *hwts)
5020 {
5021 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5022 	struct ieee80211_local *local = sdata->local;
5023 
5024 	if (!local->ops->set_hw_timestamp)
5025 		return -EOPNOTSUPP;
5026 
5027 	if (!check_sdata_in_driver(sdata))
5028 		return -EIO;
5029 
5030 	return local->ops->set_hw_timestamp(&local->hw, &sdata->vif, hwts);
5031 }
5032 
5033 const struct cfg80211_ops mac80211_config_ops = {
5034 	.add_virtual_intf = ieee80211_add_iface,
5035 	.del_virtual_intf = ieee80211_del_iface,
5036 	.change_virtual_intf = ieee80211_change_iface,
5037 	.start_p2p_device = ieee80211_start_p2p_device,
5038 	.stop_p2p_device = ieee80211_stop_p2p_device,
5039 	.add_key = ieee80211_add_key,
5040 	.del_key = ieee80211_del_key,
5041 	.get_key = ieee80211_get_key,
5042 	.set_default_key = ieee80211_config_default_key,
5043 	.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
5044 	.set_default_beacon_key = ieee80211_config_default_beacon_key,
5045 	.start_ap = ieee80211_start_ap,
5046 	.change_beacon = ieee80211_change_beacon,
5047 	.stop_ap = ieee80211_stop_ap,
5048 	.add_station = ieee80211_add_station,
5049 	.del_station = ieee80211_del_station,
5050 	.change_station = ieee80211_change_station,
5051 	.get_station = ieee80211_get_station,
5052 	.dump_station = ieee80211_dump_station,
5053 	.dump_survey = ieee80211_dump_survey,
5054 #ifdef CONFIG_MAC80211_MESH
5055 	.add_mpath = ieee80211_add_mpath,
5056 	.del_mpath = ieee80211_del_mpath,
5057 	.change_mpath = ieee80211_change_mpath,
5058 	.get_mpath = ieee80211_get_mpath,
5059 	.dump_mpath = ieee80211_dump_mpath,
5060 	.get_mpp = ieee80211_get_mpp,
5061 	.dump_mpp = ieee80211_dump_mpp,
5062 	.update_mesh_config = ieee80211_update_mesh_config,
5063 	.get_mesh_config = ieee80211_get_mesh_config,
5064 	.join_mesh = ieee80211_join_mesh,
5065 	.leave_mesh = ieee80211_leave_mesh,
5066 #endif
5067 	.join_ocb = ieee80211_join_ocb,
5068 	.leave_ocb = ieee80211_leave_ocb,
5069 	.change_bss = ieee80211_change_bss,
5070 	.inform_bss = ieee80211_inform_bss,
5071 	.set_txq_params = ieee80211_set_txq_params,
5072 	.set_monitor_channel = ieee80211_set_monitor_channel,
5073 	.suspend = ieee80211_suspend,
5074 	.resume = ieee80211_resume,
5075 	.scan = ieee80211_scan,
5076 	.abort_scan = ieee80211_abort_scan,
5077 	.sched_scan_start = ieee80211_sched_scan_start,
5078 	.sched_scan_stop = ieee80211_sched_scan_stop,
5079 	.auth = ieee80211_auth,
5080 	.assoc = ieee80211_assoc,
5081 	.deauth = ieee80211_deauth,
5082 	.disassoc = ieee80211_disassoc,
5083 	.join_ibss = ieee80211_join_ibss,
5084 	.leave_ibss = ieee80211_leave_ibss,
5085 	.set_mcast_rate = ieee80211_set_mcast_rate,
5086 	.set_wiphy_params = ieee80211_set_wiphy_params,
5087 	.set_tx_power = ieee80211_set_tx_power,
5088 	.get_tx_power = ieee80211_get_tx_power,
5089 	.rfkill_poll = ieee80211_rfkill_poll,
5090 	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
5091 	CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
5092 	.set_power_mgmt = ieee80211_set_power_mgmt,
5093 	.set_bitrate_mask = ieee80211_set_bitrate_mask,
5094 	.remain_on_channel = ieee80211_remain_on_channel,
5095 	.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
5096 	.mgmt_tx = ieee80211_mgmt_tx,
5097 	.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
5098 	.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
5099 	.set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
5100 	.update_mgmt_frame_registrations =
5101 		ieee80211_update_mgmt_frame_registrations,
5102 	.set_antenna = ieee80211_set_antenna,
5103 	.get_antenna = ieee80211_get_antenna,
5104 	.set_rekey_data = ieee80211_set_rekey_data,
5105 	.tdls_oper = ieee80211_tdls_oper,
5106 	.tdls_mgmt = ieee80211_tdls_mgmt,
5107 	.tdls_channel_switch = ieee80211_tdls_channel_switch,
5108 	.tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
5109 	.probe_client = ieee80211_probe_client,
5110 	.set_noack_map = ieee80211_set_noack_map,
5111 #ifdef CONFIG_PM
5112 	.set_wakeup = ieee80211_set_wakeup,
5113 #endif
5114 	.get_channel = ieee80211_cfg_get_channel,
5115 	.start_radar_detection = ieee80211_start_radar_detection,
5116 	.end_cac = ieee80211_end_cac,
5117 	.channel_switch = ieee80211_channel_switch,
5118 	.set_qos_map = ieee80211_set_qos_map,
5119 	.set_ap_chanwidth = ieee80211_set_ap_chanwidth,
5120 	.add_tx_ts = ieee80211_add_tx_ts,
5121 	.del_tx_ts = ieee80211_del_tx_ts,
5122 	.start_nan = ieee80211_start_nan,
5123 	.stop_nan = ieee80211_stop_nan,
5124 	.nan_change_conf = ieee80211_nan_change_conf,
5125 	.add_nan_func = ieee80211_add_nan_func,
5126 	.del_nan_func = ieee80211_del_nan_func,
5127 	.set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
5128 	.tx_control_port = ieee80211_tx_control_port,
5129 	.get_txq_stats = ieee80211_get_txq_stats,
5130 	.get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
5131 	.start_pmsr = ieee80211_start_pmsr,
5132 	.abort_pmsr = ieee80211_abort_pmsr,
5133 	.probe_mesh_link = ieee80211_probe_mesh_link,
5134 	.set_tid_config = ieee80211_set_tid_config,
5135 	.reset_tid_config = ieee80211_reset_tid_config,
5136 	.set_sar_specs = ieee80211_set_sar_specs,
5137 	.color_change = ieee80211_color_change,
5138 	.set_radar_background = ieee80211_set_radar_background,
5139 	.add_intf_link = ieee80211_add_intf_link,
5140 	.del_intf_link = ieee80211_del_intf_link,
5141 	.add_link_station = ieee80211_add_link_station,
5142 	.mod_link_station = ieee80211_mod_link_station,
5143 	.del_link_station = ieee80211_del_link_station,
5144 	.set_hw_timestamp = ieee80211_set_hw_timestamp,
5145 };
5146