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[mirror_ubuntu-focal-kernel.git] / net / mac80211 / cfg.c
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) 2018-2019 Intel Corporation
9 * Copyright (C) 2018 Intel Corporation
10 */
11
12 #include <linux/ieee80211.h>
13 #include <linux/nl80211.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/slab.h>
16 #include <net/net_namespace.h>
17 #include <linux/rcupdate.h>
18 #include <linux/fips.h>
19 #include <linux/if_ether.h>
20 #include <net/cfg80211.h>
21 #include "ieee80211_i.h"
22 #include "driver-ops.h"
23 #include "rate.h"
24 #include "mesh.h"
25 #include "wme.h"
26
27 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
28 struct vif_params *params)
29 {
30 bool mu_mimo_groups = false;
31 bool mu_mimo_follow = false;
32
33 if (params->vht_mumimo_groups) {
34 u64 membership;
35
36 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
37
38 memcpy(sdata->vif.bss_conf.mu_group.membership,
39 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
40 memcpy(sdata->vif.bss_conf.mu_group.position,
41 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
42 WLAN_USER_POSITION_LEN);
43 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
44 /* don't care about endianness - just check for 0 */
45 memcpy(&membership, params->vht_mumimo_groups,
46 WLAN_MEMBERSHIP_LEN);
47 mu_mimo_groups = membership != 0;
48 }
49
50 if (params->vht_mumimo_follow_addr) {
51 mu_mimo_follow =
52 is_valid_ether_addr(params->vht_mumimo_follow_addr);
53 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
54 params->vht_mumimo_follow_addr);
55 }
56
57 sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
58 }
59
60 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
61 struct vif_params *params)
62 {
63 struct ieee80211_local *local = sdata->local;
64 struct ieee80211_sub_if_data *monitor_sdata;
65
66 /* check flags first */
67 if (params->flags && ieee80211_sdata_running(sdata)) {
68 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
69
70 /*
71 * Prohibit MONITOR_FLAG_COOK_FRAMES and
72 * MONITOR_FLAG_ACTIVE to be changed while the
73 * interface is up.
74 * Else we would need to add a lot of cruft
75 * to update everything:
76 * cooked_mntrs, monitor and all fif_* counters
77 * reconfigure hardware
78 */
79 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
80 return -EBUSY;
81 }
82
83 /* also validate MU-MIMO change */
84 monitor_sdata = rtnl_dereference(local->monitor_sdata);
85
86 if (!monitor_sdata &&
87 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
88 return -EOPNOTSUPP;
89
90 /* apply all changes now - no failures allowed */
91
92 if (monitor_sdata)
93 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
94
95 if (params->flags) {
96 if (ieee80211_sdata_running(sdata)) {
97 ieee80211_adjust_monitor_flags(sdata, -1);
98 sdata->u.mntr.flags = params->flags;
99 ieee80211_adjust_monitor_flags(sdata, 1);
100
101 ieee80211_configure_filter(local);
102 } else {
103 /*
104 * Because the interface is down, ieee80211_do_stop
105 * and ieee80211_do_open take care of "everything"
106 * mentioned in the comment above.
107 */
108 sdata->u.mntr.flags = params->flags;
109 }
110 }
111
112 return 0;
113 }
114
115 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
116 const char *name,
117 unsigned char name_assign_type,
118 enum nl80211_iftype type,
119 struct vif_params *params)
120 {
121 struct ieee80211_local *local = wiphy_priv(wiphy);
122 struct wireless_dev *wdev;
123 struct ieee80211_sub_if_data *sdata;
124 int err;
125
126 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
127 if (err)
128 return ERR_PTR(err);
129
130 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
131
132 if (type == NL80211_IFTYPE_MONITOR) {
133 err = ieee80211_set_mon_options(sdata, params);
134 if (err) {
135 ieee80211_if_remove(sdata);
136 return NULL;
137 }
138 }
139
140 return wdev;
141 }
142
143 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
144 {
145 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
146
147 return 0;
148 }
149
150 static int ieee80211_change_iface(struct wiphy *wiphy,
151 struct net_device *dev,
152 enum nl80211_iftype type,
153 struct vif_params *params)
154 {
155 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
156 int ret;
157
158 ret = ieee80211_if_change_type(sdata, type);
159 if (ret)
160 return ret;
161
162 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) {
163 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
164 ieee80211_check_fast_rx_iface(sdata);
165 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
166 sdata->u.mgd.use_4addr = params->use_4addr;
167 }
168
169 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
170 ret = ieee80211_set_mon_options(sdata, params);
171 if (ret)
172 return ret;
173 }
174
175 return 0;
176 }
177
178 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
179 struct wireless_dev *wdev)
180 {
181 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
182 int ret;
183
184 mutex_lock(&sdata->local->chanctx_mtx);
185 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
186 mutex_unlock(&sdata->local->chanctx_mtx);
187 if (ret < 0)
188 return ret;
189
190 return ieee80211_do_open(wdev, true);
191 }
192
193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
194 struct wireless_dev *wdev)
195 {
196 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
197 }
198
199 static int ieee80211_start_nan(struct wiphy *wiphy,
200 struct wireless_dev *wdev,
201 struct cfg80211_nan_conf *conf)
202 {
203 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
204 int ret;
205
206 mutex_lock(&sdata->local->chanctx_mtx);
207 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
208 mutex_unlock(&sdata->local->chanctx_mtx);
209 if (ret < 0)
210 return ret;
211
212 ret = ieee80211_do_open(wdev, true);
213 if (ret)
214 return ret;
215
216 ret = drv_start_nan(sdata->local, sdata, conf);
217 if (ret)
218 ieee80211_sdata_stop(sdata);
219
220 sdata->u.nan.conf = *conf;
221
222 return ret;
223 }
224
225 static void ieee80211_stop_nan(struct wiphy *wiphy,
226 struct wireless_dev *wdev)
227 {
228 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
229
230 drv_stop_nan(sdata->local, sdata);
231 ieee80211_sdata_stop(sdata);
232 }
233
234 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
235 struct wireless_dev *wdev,
236 struct cfg80211_nan_conf *conf,
237 u32 changes)
238 {
239 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
240 struct cfg80211_nan_conf new_conf;
241 int ret = 0;
242
243 if (sdata->vif.type != NL80211_IFTYPE_NAN)
244 return -EOPNOTSUPP;
245
246 if (!ieee80211_sdata_running(sdata))
247 return -ENETDOWN;
248
249 new_conf = sdata->u.nan.conf;
250
251 if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
252 new_conf.master_pref = conf->master_pref;
253
254 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
255 new_conf.bands = conf->bands;
256
257 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
258 if (!ret)
259 sdata->u.nan.conf = new_conf;
260
261 return ret;
262 }
263
264 static int ieee80211_add_nan_func(struct wiphy *wiphy,
265 struct wireless_dev *wdev,
266 struct cfg80211_nan_func *nan_func)
267 {
268 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
269 int ret;
270
271 if (sdata->vif.type != NL80211_IFTYPE_NAN)
272 return -EOPNOTSUPP;
273
274 if (!ieee80211_sdata_running(sdata))
275 return -ENETDOWN;
276
277 spin_lock_bh(&sdata->u.nan.func_lock);
278
279 ret = idr_alloc(&sdata->u.nan.function_inst_ids,
280 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
281 GFP_ATOMIC);
282 spin_unlock_bh(&sdata->u.nan.func_lock);
283
284 if (ret < 0)
285 return ret;
286
287 nan_func->instance_id = ret;
288
289 WARN_ON(nan_func->instance_id == 0);
290
291 ret = drv_add_nan_func(sdata->local, sdata, nan_func);
292 if (ret) {
293 spin_lock_bh(&sdata->u.nan.func_lock);
294 idr_remove(&sdata->u.nan.function_inst_ids,
295 nan_func->instance_id);
296 spin_unlock_bh(&sdata->u.nan.func_lock);
297 }
298
299 return ret;
300 }
301
302 static struct cfg80211_nan_func *
303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
304 u64 cookie)
305 {
306 struct cfg80211_nan_func *func;
307 int id;
308
309 lockdep_assert_held(&sdata->u.nan.func_lock);
310
311 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
312 if (func->cookie == cookie)
313 return func;
314 }
315
316 return NULL;
317 }
318
319 static void ieee80211_del_nan_func(struct wiphy *wiphy,
320 struct wireless_dev *wdev, u64 cookie)
321 {
322 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
323 struct cfg80211_nan_func *func;
324 u8 instance_id = 0;
325
326 if (sdata->vif.type != NL80211_IFTYPE_NAN ||
327 !ieee80211_sdata_running(sdata))
328 return;
329
330 spin_lock_bh(&sdata->u.nan.func_lock);
331
332 func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
333 if (func)
334 instance_id = func->instance_id;
335
336 spin_unlock_bh(&sdata->u.nan.func_lock);
337
338 if (instance_id)
339 drv_del_nan_func(sdata->local, sdata, instance_id);
340 }
341
342 static int ieee80211_set_noack_map(struct wiphy *wiphy,
343 struct net_device *dev,
344 u16 noack_map)
345 {
346 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
347
348 sdata->noack_map = noack_map;
349
350 ieee80211_check_fast_xmit_iface(sdata);
351
352 return 0;
353 }
354
355 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata,
356 const u8 *mac_addr, u8 key_idx)
357 {
358 struct ieee80211_local *local = sdata->local;
359 struct ieee80211_key *key;
360 struct sta_info *sta;
361 int ret = -EINVAL;
362
363 if (!wiphy_ext_feature_isset(local->hw.wiphy,
364 NL80211_EXT_FEATURE_EXT_KEY_ID))
365 return -EINVAL;
366
367 sta = sta_info_get_bss(sdata, mac_addr);
368
369 if (!sta)
370 return -EINVAL;
371
372 if (sta->ptk_idx == key_idx)
373 return 0;
374
375 mutex_lock(&local->key_mtx);
376 key = key_mtx_dereference(local, sta->ptk[key_idx]);
377
378 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX)
379 ret = ieee80211_set_tx_key(key);
380
381 mutex_unlock(&local->key_mtx);
382 return ret;
383 }
384
385 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
386 u8 key_idx, bool pairwise, const u8 *mac_addr,
387 struct key_params *params)
388 {
389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
390 struct ieee80211_local *local = sdata->local;
391 struct sta_info *sta = NULL;
392 const struct ieee80211_cipher_scheme *cs = NULL;
393 struct ieee80211_key *key;
394 int err;
395
396 if (!ieee80211_sdata_running(sdata))
397 return -ENETDOWN;
398
399 if (pairwise && params->mode == NL80211_KEY_SET_TX)
400 return ieee80211_set_tx(sdata, mac_addr, key_idx);
401
402 /* reject WEP and TKIP keys if WEP failed to initialize */
403 switch (params->cipher) {
404 case WLAN_CIPHER_SUITE_WEP40:
405 case WLAN_CIPHER_SUITE_TKIP:
406 case WLAN_CIPHER_SUITE_WEP104:
407 if (WARN_ON_ONCE(fips_enabled))
408 return -EINVAL;
409 case WLAN_CIPHER_SUITE_CCMP:
410 case WLAN_CIPHER_SUITE_CCMP_256:
411 case WLAN_CIPHER_SUITE_AES_CMAC:
412 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
413 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
414 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
415 case WLAN_CIPHER_SUITE_GCMP:
416 case WLAN_CIPHER_SUITE_GCMP_256:
417 break;
418 default:
419 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
420 break;
421 }
422
423 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
424 params->key, params->seq_len, params->seq,
425 cs);
426 if (IS_ERR(key))
427 return PTR_ERR(key);
428
429 if (pairwise)
430 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
431
432 if (params->mode == NL80211_KEY_NO_TX)
433 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX;
434
435 mutex_lock(&local->sta_mtx);
436
437 if (mac_addr) {
438 sta = sta_info_get_bss(sdata, mac_addr);
439 /*
440 * The ASSOC test makes sure the driver is ready to
441 * receive the key. When wpa_supplicant has roamed
442 * using FT, it attempts to set the key before
443 * association has completed, this rejects that attempt
444 * so it will set the key again after association.
445 *
446 * TODO: accept the key if we have a station entry and
447 * add it to the device after the station.
448 */
449 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
450 ieee80211_key_free_unused(key);
451 err = -ENOENT;
452 goto out_unlock;
453 }
454 }
455
456 switch (sdata->vif.type) {
457 case NL80211_IFTYPE_STATION:
458 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
459 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
460 break;
461 case NL80211_IFTYPE_AP:
462 case NL80211_IFTYPE_AP_VLAN:
463 /* Keys without a station are used for TX only */
464 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
465 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
466 break;
467 case NL80211_IFTYPE_ADHOC:
468 /* no MFP (yet) */
469 break;
470 case NL80211_IFTYPE_MESH_POINT:
471 #ifdef CONFIG_MAC80211_MESH
472 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
473 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
474 break;
475 #endif
476 case NL80211_IFTYPE_WDS:
477 case NL80211_IFTYPE_MONITOR:
478 case NL80211_IFTYPE_P2P_DEVICE:
479 case NL80211_IFTYPE_NAN:
480 case NL80211_IFTYPE_UNSPECIFIED:
481 case NUM_NL80211_IFTYPES:
482 case NL80211_IFTYPE_P2P_CLIENT:
483 case NL80211_IFTYPE_P2P_GO:
484 case NL80211_IFTYPE_OCB:
485 /* shouldn't happen */
486 WARN_ON_ONCE(1);
487 break;
488 }
489
490 if (sta)
491 sta->cipher_scheme = cs;
492
493 err = ieee80211_key_link(key, sdata, sta);
494
495 out_unlock:
496 mutex_unlock(&local->sta_mtx);
497
498 return err;
499 }
500
501 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
502 u8 key_idx, bool pairwise, const u8 *mac_addr)
503 {
504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
505 struct ieee80211_local *local = sdata->local;
506 struct sta_info *sta;
507 struct ieee80211_key *key = NULL;
508 int ret;
509
510 mutex_lock(&local->sta_mtx);
511 mutex_lock(&local->key_mtx);
512
513 if (mac_addr) {
514 ret = -ENOENT;
515
516 sta = sta_info_get_bss(sdata, mac_addr);
517 if (!sta)
518 goto out_unlock;
519
520 if (pairwise)
521 key = key_mtx_dereference(local, sta->ptk[key_idx]);
522 else
523 key = key_mtx_dereference(local, sta->gtk[key_idx]);
524 } else
525 key = key_mtx_dereference(local, sdata->keys[key_idx]);
526
527 if (!key) {
528 ret = -ENOENT;
529 goto out_unlock;
530 }
531
532 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
533
534 ret = 0;
535 out_unlock:
536 mutex_unlock(&local->key_mtx);
537 mutex_unlock(&local->sta_mtx);
538
539 return ret;
540 }
541
542 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
543 u8 key_idx, bool pairwise, const u8 *mac_addr,
544 void *cookie,
545 void (*callback)(void *cookie,
546 struct key_params *params))
547 {
548 struct ieee80211_sub_if_data *sdata;
549 struct sta_info *sta = NULL;
550 u8 seq[6] = {0};
551 struct key_params params;
552 struct ieee80211_key *key = NULL;
553 u64 pn64;
554 u32 iv32;
555 u16 iv16;
556 int err = -ENOENT;
557 struct ieee80211_key_seq kseq = {};
558
559 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
560
561 rcu_read_lock();
562
563 if (mac_addr) {
564 sta = sta_info_get_bss(sdata, mac_addr);
565 if (!sta)
566 goto out;
567
568 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
569 key = rcu_dereference(sta->ptk[key_idx]);
570 else if (!pairwise &&
571 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
572 key = rcu_dereference(sta->gtk[key_idx]);
573 } else
574 key = rcu_dereference(sdata->keys[key_idx]);
575
576 if (!key)
577 goto out;
578
579 memset(&params, 0, sizeof(params));
580
581 params.cipher = key->conf.cipher;
582
583 switch (key->conf.cipher) {
584 case WLAN_CIPHER_SUITE_TKIP:
585 pn64 = atomic64_read(&key->conf.tx_pn);
586 iv32 = TKIP_PN_TO_IV32(pn64);
587 iv16 = TKIP_PN_TO_IV16(pn64);
588
589 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
590 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
591 drv_get_key_seq(sdata->local, key, &kseq);
592 iv32 = kseq.tkip.iv32;
593 iv16 = kseq.tkip.iv16;
594 }
595
596 seq[0] = iv16 & 0xff;
597 seq[1] = (iv16 >> 8) & 0xff;
598 seq[2] = iv32 & 0xff;
599 seq[3] = (iv32 >> 8) & 0xff;
600 seq[4] = (iv32 >> 16) & 0xff;
601 seq[5] = (iv32 >> 24) & 0xff;
602 params.seq = seq;
603 params.seq_len = 6;
604 break;
605 case WLAN_CIPHER_SUITE_CCMP:
606 case WLAN_CIPHER_SUITE_CCMP_256:
607 case WLAN_CIPHER_SUITE_AES_CMAC:
608 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
609 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
610 offsetof(typeof(kseq), aes_cmac));
611 /* fall through */
612 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
613 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
614 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
615 offsetof(typeof(kseq), aes_gmac));
616 /* fall through */
617 case WLAN_CIPHER_SUITE_GCMP:
618 case WLAN_CIPHER_SUITE_GCMP_256:
619 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
620 offsetof(typeof(kseq), gcmp));
621
622 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
623 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
624 drv_get_key_seq(sdata->local, key, &kseq);
625 memcpy(seq, kseq.ccmp.pn, 6);
626 } else {
627 pn64 = atomic64_read(&key->conf.tx_pn);
628 seq[0] = pn64;
629 seq[1] = pn64 >> 8;
630 seq[2] = pn64 >> 16;
631 seq[3] = pn64 >> 24;
632 seq[4] = pn64 >> 32;
633 seq[5] = pn64 >> 40;
634 }
635 params.seq = seq;
636 params.seq_len = 6;
637 break;
638 default:
639 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
640 break;
641 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
642 break;
643 drv_get_key_seq(sdata->local, key, &kseq);
644 params.seq = kseq.hw.seq;
645 params.seq_len = kseq.hw.seq_len;
646 break;
647 }
648
649 params.key = key->conf.key;
650 params.key_len = key->conf.keylen;
651
652 callback(cookie, &params);
653 err = 0;
654
655 out:
656 rcu_read_unlock();
657 return err;
658 }
659
660 static int ieee80211_config_default_key(struct wiphy *wiphy,
661 struct net_device *dev,
662 u8 key_idx, bool uni,
663 bool multi)
664 {
665 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
666
667 ieee80211_set_default_key(sdata, key_idx, uni, multi);
668
669 return 0;
670 }
671
672 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
673 struct net_device *dev,
674 u8 key_idx)
675 {
676 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
677
678 ieee80211_set_default_mgmt_key(sdata, key_idx);
679
680 return 0;
681 }
682
683 void sta_set_rate_info_tx(struct sta_info *sta,
684 const struct ieee80211_tx_rate *rate,
685 struct rate_info *rinfo)
686 {
687 rinfo->flags = 0;
688 if (rate->flags & IEEE80211_TX_RC_MCS) {
689 rinfo->flags |= RATE_INFO_FLAGS_MCS;
690 rinfo->mcs = rate->idx;
691 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
692 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
693 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
694 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
695 } else {
696 struct ieee80211_supported_band *sband;
697 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
698 u16 brate;
699
700 sband = ieee80211_get_sband(sta->sdata);
701 WARN_ON_ONCE(sband && !sband->bitrates);
702 if (sband && sband->bitrates) {
703 brate = sband->bitrates[rate->idx].bitrate;
704 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
705 }
706 }
707 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
708 rinfo->bw = RATE_INFO_BW_40;
709 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
710 rinfo->bw = RATE_INFO_BW_80;
711 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
712 rinfo->bw = RATE_INFO_BW_160;
713 else
714 rinfo->bw = RATE_INFO_BW_20;
715 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
716 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
717 }
718
719 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
720 int idx, u8 *mac, struct station_info *sinfo)
721 {
722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
723 struct ieee80211_local *local = sdata->local;
724 struct sta_info *sta;
725 int ret = -ENOENT;
726
727 mutex_lock(&local->sta_mtx);
728
729 sta = sta_info_get_by_idx(sdata, idx);
730 if (sta) {
731 ret = 0;
732 memcpy(mac, sta->sta.addr, ETH_ALEN);
733 sta_set_sinfo(sta, sinfo, true);
734 }
735
736 mutex_unlock(&local->sta_mtx);
737
738 return ret;
739 }
740
741 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
742 int idx, struct survey_info *survey)
743 {
744 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
745
746 return drv_get_survey(local, idx, survey);
747 }
748
749 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
750 const u8 *mac, struct station_info *sinfo)
751 {
752 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
753 struct ieee80211_local *local = sdata->local;
754 struct sta_info *sta;
755 int ret = -ENOENT;
756
757 mutex_lock(&local->sta_mtx);
758
759 sta = sta_info_get_bss(sdata, mac);
760 if (sta) {
761 ret = 0;
762 sta_set_sinfo(sta, sinfo, true);
763 }
764
765 mutex_unlock(&local->sta_mtx);
766
767 return ret;
768 }
769
770 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
771 struct cfg80211_chan_def *chandef)
772 {
773 struct ieee80211_local *local = wiphy_priv(wiphy);
774 struct ieee80211_sub_if_data *sdata;
775 int ret = 0;
776
777 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
778 return 0;
779
780 mutex_lock(&local->mtx);
781 if (local->use_chanctx) {
782 sdata = rtnl_dereference(local->monitor_sdata);
783 if (sdata) {
784 ieee80211_vif_release_channel(sdata);
785 ret = ieee80211_vif_use_channel(sdata, chandef,
786 IEEE80211_CHANCTX_EXCLUSIVE);
787 }
788 } else if (local->open_count == local->monitors) {
789 local->_oper_chandef = *chandef;
790 ieee80211_hw_config(local, 0);
791 }
792
793 if (ret == 0)
794 local->monitor_chandef = *chandef;
795 mutex_unlock(&local->mtx);
796
797 return ret;
798 }
799
800 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
801 const u8 *resp, size_t resp_len,
802 const struct ieee80211_csa_settings *csa)
803 {
804 struct probe_resp *new, *old;
805
806 if (!resp || !resp_len)
807 return 1;
808
809 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
810
811 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
812 if (!new)
813 return -ENOMEM;
814
815 new->len = resp_len;
816 memcpy(new->data, resp, resp_len);
817
818 if (csa)
819 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
820 csa->n_counter_offsets_presp *
821 sizeof(new->csa_counter_offsets[0]));
822
823 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
824 if (old)
825 kfree_rcu(old, rcu_head);
826
827 return 0;
828 }
829
830 static int ieee80211_set_ftm_responder_params(
831 struct ieee80211_sub_if_data *sdata,
832 const u8 *lci, size_t lci_len,
833 const u8 *civicloc, size_t civicloc_len)
834 {
835 struct ieee80211_ftm_responder_params *new, *old;
836 struct ieee80211_bss_conf *bss_conf;
837 u8 *pos;
838 int len;
839
840 if (!lci_len && !civicloc_len)
841 return 0;
842
843 bss_conf = &sdata->vif.bss_conf;
844 old = bss_conf->ftmr_params;
845 len = lci_len + civicloc_len;
846
847 new = kzalloc(sizeof(*new) + len, GFP_KERNEL);
848 if (!new)
849 return -ENOMEM;
850
851 pos = (u8 *)(new + 1);
852 if (lci_len) {
853 new->lci_len = lci_len;
854 new->lci = pos;
855 memcpy(pos, lci, lci_len);
856 pos += lci_len;
857 }
858
859 if (civicloc_len) {
860 new->civicloc_len = civicloc_len;
861 new->civicloc = pos;
862 memcpy(pos, civicloc, civicloc_len);
863 pos += civicloc_len;
864 }
865
866 bss_conf->ftmr_params = new;
867 kfree(old);
868
869 return 0;
870 }
871
872 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
873 struct cfg80211_beacon_data *params,
874 const struct ieee80211_csa_settings *csa)
875 {
876 struct beacon_data *new, *old;
877 int new_head_len, new_tail_len;
878 int size, err;
879 u32 changed = BSS_CHANGED_BEACON;
880
881 old = sdata_dereference(sdata->u.ap.beacon, sdata);
882
883
884 /* Need to have a beacon head if we don't have one yet */
885 if (!params->head && !old)
886 return -EINVAL;
887
888 /* new or old head? */
889 if (params->head)
890 new_head_len = params->head_len;
891 else
892 new_head_len = old->head_len;
893
894 /* new or old tail? */
895 if (params->tail || !old)
896 /* params->tail_len will be zero for !params->tail */
897 new_tail_len = params->tail_len;
898 else
899 new_tail_len = old->tail_len;
900
901 size = sizeof(*new) + new_head_len + new_tail_len;
902
903 new = kzalloc(size, GFP_KERNEL);
904 if (!new)
905 return -ENOMEM;
906
907 /* start filling the new info now */
908
909 /*
910 * pointers go into the block we allocated,
911 * memory is | beacon_data | head | tail |
912 */
913 new->head = ((u8 *) new) + sizeof(*new);
914 new->tail = new->head + new_head_len;
915 new->head_len = new_head_len;
916 new->tail_len = new_tail_len;
917
918 if (csa) {
919 new->csa_current_counter = csa->count;
920 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
921 csa->n_counter_offsets_beacon *
922 sizeof(new->csa_counter_offsets[0]));
923 }
924
925 /* copy in head */
926 if (params->head)
927 memcpy(new->head, params->head, new_head_len);
928 else
929 memcpy(new->head, old->head, new_head_len);
930
931 /* copy in optional tail */
932 if (params->tail)
933 memcpy(new->tail, params->tail, new_tail_len);
934 else
935 if (old)
936 memcpy(new->tail, old->tail, new_tail_len);
937
938 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
939 params->probe_resp_len, csa);
940 if (err < 0) {
941 kfree(new);
942 return err;
943 }
944 if (err == 0)
945 changed |= BSS_CHANGED_AP_PROBE_RESP;
946
947 if (params->ftm_responder != -1) {
948 sdata->vif.bss_conf.ftm_responder = params->ftm_responder;
949 err = ieee80211_set_ftm_responder_params(sdata,
950 params->lci,
951 params->lci_len,
952 params->civicloc,
953 params->civicloc_len);
954
955 if (err < 0) {
956 kfree(new);
957 return err;
958 }
959
960 changed |= BSS_CHANGED_FTM_RESPONDER;
961 }
962
963 rcu_assign_pointer(sdata->u.ap.beacon, new);
964
965 if (old)
966 kfree_rcu(old, rcu_head);
967
968 return changed;
969 }
970
971 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
972 struct cfg80211_ap_settings *params)
973 {
974 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
975 struct ieee80211_local *local = sdata->local;
976 struct beacon_data *old;
977 struct ieee80211_sub_if_data *vlan;
978 u32 changed = BSS_CHANGED_BEACON_INT |
979 BSS_CHANGED_BEACON_ENABLED |
980 BSS_CHANGED_BEACON |
981 BSS_CHANGED_SSID |
982 BSS_CHANGED_P2P_PS |
983 BSS_CHANGED_TXPOWER |
984 BSS_CHANGED_TWT |
985 BSS_CHANGED_HE_OBSS_PD;
986 int err;
987 int prev_beacon_int;
988
989 old = sdata_dereference(sdata->u.ap.beacon, sdata);
990 if (old)
991 return -EALREADY;
992
993 switch (params->smps_mode) {
994 case NL80211_SMPS_OFF:
995 sdata->smps_mode = IEEE80211_SMPS_OFF;
996 break;
997 case NL80211_SMPS_STATIC:
998 sdata->smps_mode = IEEE80211_SMPS_STATIC;
999 break;
1000 case NL80211_SMPS_DYNAMIC:
1001 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
1002 break;
1003 default:
1004 return -EINVAL;
1005 }
1006 sdata->u.ap.req_smps = sdata->smps_mode;
1007
1008 sdata->needed_rx_chains = sdata->local->rx_chains;
1009
1010 prev_beacon_int = sdata->vif.bss_conf.beacon_int;
1011 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1012
1013 if (params->he_cap)
1014 sdata->vif.bss_conf.he_support = true;
1015
1016 mutex_lock(&local->mtx);
1017 err = ieee80211_vif_use_channel(sdata, &params->chandef,
1018 IEEE80211_CHANCTX_SHARED);
1019 if (!err)
1020 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
1021 mutex_unlock(&local->mtx);
1022 if (err) {
1023 sdata->vif.bss_conf.beacon_int = prev_beacon_int;
1024 return err;
1025 }
1026
1027 /*
1028 * Apply control port protocol, this allows us to
1029 * not encrypt dynamic WEP control frames.
1030 */
1031 sdata->control_port_protocol = params->crypto.control_port_ethertype;
1032 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1033 sdata->control_port_over_nl80211 =
1034 params->crypto.control_port_over_nl80211;
1035 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
1036 &params->crypto,
1037 sdata->vif.type);
1038
1039 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1040 vlan->control_port_protocol =
1041 params->crypto.control_port_ethertype;
1042 vlan->control_port_no_encrypt =
1043 params->crypto.control_port_no_encrypt;
1044 vlan->control_port_over_nl80211 =
1045 params->crypto.control_port_over_nl80211;
1046 vlan->encrypt_headroom =
1047 ieee80211_cs_headroom(sdata->local,
1048 &params->crypto,
1049 vlan->vif.type);
1050 }
1051
1052 sdata->vif.bss_conf.dtim_period = params->dtim_period;
1053 sdata->vif.bss_conf.enable_beacon = true;
1054 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
1055 sdata->vif.bss_conf.twt_responder = params->twt_responder;
1056 memcpy(&sdata->vif.bss_conf.he_obss_pd, &params->he_obss_pd,
1057 sizeof(struct ieee80211_he_obss_pd));
1058
1059 sdata->vif.bss_conf.ssid_len = params->ssid_len;
1060 if (params->ssid_len)
1061 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1062 params->ssid_len);
1063 sdata->vif.bss_conf.hidden_ssid =
1064 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1065
1066 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1067 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1068 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1069 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1070 if (params->p2p_opp_ps)
1071 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1072 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1073
1074 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
1075 if (err < 0) {
1076 ieee80211_vif_release_channel(sdata);
1077 return err;
1078 }
1079 changed |= err;
1080
1081 err = drv_start_ap(sdata->local, sdata);
1082 if (err) {
1083 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1084
1085 if (old)
1086 kfree_rcu(old, rcu_head);
1087 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1088 ieee80211_vif_release_channel(sdata);
1089 return err;
1090 }
1091
1092 ieee80211_recalc_dtim(local, sdata);
1093 ieee80211_bss_info_change_notify(sdata, changed);
1094
1095 netif_carrier_on(dev);
1096 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1097 netif_carrier_on(vlan->dev);
1098
1099 return 0;
1100 }
1101
1102 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1103 struct cfg80211_beacon_data *params)
1104 {
1105 struct ieee80211_sub_if_data *sdata;
1106 struct beacon_data *old;
1107 int err;
1108
1109 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1110 sdata_assert_lock(sdata);
1111
1112 /* don't allow changing the beacon while CSA is in place - offset
1113 * of channel switch counter may change
1114 */
1115 if (sdata->vif.csa_active)
1116 return -EBUSY;
1117
1118 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1119 if (!old)
1120 return -ENOENT;
1121
1122 err = ieee80211_assign_beacon(sdata, params, NULL);
1123 if (err < 0)
1124 return err;
1125 ieee80211_bss_info_change_notify(sdata, err);
1126 return 0;
1127 }
1128
1129 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1130 {
1131 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1132 struct ieee80211_sub_if_data *vlan;
1133 struct ieee80211_local *local = sdata->local;
1134 struct beacon_data *old_beacon;
1135 struct probe_resp *old_probe_resp;
1136 struct cfg80211_chan_def chandef;
1137
1138 sdata_assert_lock(sdata);
1139
1140 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1141 if (!old_beacon)
1142 return -ENOENT;
1143 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1144
1145 /* abort any running channel switch */
1146 mutex_lock(&local->mtx);
1147 sdata->vif.csa_active = false;
1148 if (sdata->csa_block_tx) {
1149 ieee80211_wake_vif_queues(local, sdata,
1150 IEEE80211_QUEUE_STOP_REASON_CSA);
1151 sdata->csa_block_tx = false;
1152 }
1153
1154 mutex_unlock(&local->mtx);
1155
1156 kfree(sdata->u.ap.next_beacon);
1157 sdata->u.ap.next_beacon = NULL;
1158
1159 /* turn off carrier for this interface and dependent VLANs */
1160 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1161 netif_carrier_off(vlan->dev);
1162 netif_carrier_off(dev);
1163
1164 /* remove beacon and probe response */
1165 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1166 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1167 kfree_rcu(old_beacon, rcu_head);
1168 if (old_probe_resp)
1169 kfree_rcu(old_probe_resp, rcu_head);
1170 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1171
1172 kfree(sdata->vif.bss_conf.ftmr_params);
1173 sdata->vif.bss_conf.ftmr_params = NULL;
1174
1175 __sta_info_flush(sdata, true);
1176 ieee80211_free_keys(sdata, true);
1177
1178 sdata->vif.bss_conf.enable_beacon = false;
1179 sdata->vif.bss_conf.ssid_len = 0;
1180 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1181 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1182
1183 if (sdata->wdev.cac_started) {
1184 chandef = sdata->vif.bss_conf.chandef;
1185 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1186 cfg80211_cac_event(sdata->dev, &chandef,
1187 NL80211_RADAR_CAC_ABORTED,
1188 GFP_KERNEL);
1189 }
1190
1191 drv_stop_ap(sdata->local, sdata);
1192
1193 /* free all potentially still buffered bcast frames */
1194 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1195 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1196
1197 mutex_lock(&local->mtx);
1198 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1199 ieee80211_vif_release_channel(sdata);
1200 mutex_unlock(&local->mtx);
1201
1202 return 0;
1203 }
1204
1205 static int sta_apply_auth_flags(struct ieee80211_local *local,
1206 struct sta_info *sta,
1207 u32 mask, u32 set)
1208 {
1209 int ret;
1210
1211 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1212 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1213 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1214 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1215 if (ret)
1216 return ret;
1217 }
1218
1219 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1220 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1221 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1222 /*
1223 * When peer becomes associated, init rate control as
1224 * well. Some drivers require rate control initialized
1225 * before drv_sta_state() is called.
1226 */
1227 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1228 rate_control_rate_init(sta);
1229
1230 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1231 if (ret)
1232 return ret;
1233 }
1234
1235 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1236 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1237 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1238 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1239 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1240 else
1241 ret = 0;
1242 if (ret)
1243 return ret;
1244 }
1245
1246 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1247 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1248 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1249 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1250 if (ret)
1251 return ret;
1252 }
1253
1254 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1255 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1256 test_sta_flag(sta, WLAN_STA_AUTH)) {
1257 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1258 if (ret)
1259 return ret;
1260 }
1261
1262 return 0;
1263 }
1264
1265 static void sta_apply_mesh_params(struct ieee80211_local *local,
1266 struct sta_info *sta,
1267 struct station_parameters *params)
1268 {
1269 #ifdef CONFIG_MAC80211_MESH
1270 struct ieee80211_sub_if_data *sdata = sta->sdata;
1271 u32 changed = 0;
1272
1273 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1274 switch (params->plink_state) {
1275 case NL80211_PLINK_ESTAB:
1276 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1277 changed = mesh_plink_inc_estab_count(sdata);
1278 sta->mesh->plink_state = params->plink_state;
1279 sta->mesh->aid = params->peer_aid;
1280
1281 ieee80211_mps_sta_status_update(sta);
1282 changed |= ieee80211_mps_set_sta_local_pm(sta,
1283 sdata->u.mesh.mshcfg.power_mode);
1284
1285 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg);
1286 /* init at low value */
1287 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10);
1288
1289 break;
1290 case NL80211_PLINK_LISTEN:
1291 case NL80211_PLINK_BLOCKED:
1292 case NL80211_PLINK_OPN_SNT:
1293 case NL80211_PLINK_OPN_RCVD:
1294 case NL80211_PLINK_CNF_RCVD:
1295 case NL80211_PLINK_HOLDING:
1296 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1297 changed = mesh_plink_dec_estab_count(sdata);
1298 sta->mesh->plink_state = params->plink_state;
1299
1300 ieee80211_mps_sta_status_update(sta);
1301 changed |= ieee80211_mps_set_sta_local_pm(sta,
1302 NL80211_MESH_POWER_UNKNOWN);
1303 break;
1304 default:
1305 /* nothing */
1306 break;
1307 }
1308 }
1309
1310 switch (params->plink_action) {
1311 case NL80211_PLINK_ACTION_NO_ACTION:
1312 /* nothing */
1313 break;
1314 case NL80211_PLINK_ACTION_OPEN:
1315 changed |= mesh_plink_open(sta);
1316 break;
1317 case NL80211_PLINK_ACTION_BLOCK:
1318 changed |= mesh_plink_block(sta);
1319 break;
1320 }
1321
1322 if (params->local_pm)
1323 changed |= ieee80211_mps_set_sta_local_pm(sta,
1324 params->local_pm);
1325
1326 ieee80211_mbss_info_change_notify(sdata, changed);
1327 #endif
1328 }
1329
1330 static int sta_apply_parameters(struct ieee80211_local *local,
1331 struct sta_info *sta,
1332 struct station_parameters *params)
1333 {
1334 int ret = 0;
1335 struct ieee80211_supported_band *sband;
1336 struct ieee80211_sub_if_data *sdata = sta->sdata;
1337 u32 mask, set;
1338
1339 sband = ieee80211_get_sband(sdata);
1340 if (!sband)
1341 return -EINVAL;
1342
1343 mask = params->sta_flags_mask;
1344 set = params->sta_flags_set;
1345
1346 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1347 /*
1348 * In mesh mode, ASSOCIATED isn't part of the nl80211
1349 * API but must follow AUTHENTICATED for driver state.
1350 */
1351 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1352 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1353 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1354 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1355 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1356 /*
1357 * TDLS -- everything follows authorized, but
1358 * only becoming authorized is possible, not
1359 * going back
1360 */
1361 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1362 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1363 BIT(NL80211_STA_FLAG_ASSOCIATED);
1364 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1365 BIT(NL80211_STA_FLAG_ASSOCIATED);
1366 }
1367 }
1368
1369 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1370 local->hw.queues >= IEEE80211_NUM_ACS)
1371 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1372
1373 /* auth flags will be set later for TDLS,
1374 * and for unassociated stations that move to assocaited */
1375 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1376 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1377 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1378 ret = sta_apply_auth_flags(local, sta, mask, set);
1379 if (ret)
1380 return ret;
1381 }
1382
1383 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1384 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1385 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1386 else
1387 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1388 }
1389
1390 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1391 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1392 if (set & BIT(NL80211_STA_FLAG_MFP))
1393 set_sta_flag(sta, WLAN_STA_MFP);
1394 else
1395 clear_sta_flag(sta, WLAN_STA_MFP);
1396 }
1397
1398 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1399 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1400 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1401 else
1402 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1403 }
1404
1405 /* mark TDLS channel switch support, if the AP allows it */
1406 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1407 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1408 params->ext_capab_len >= 4 &&
1409 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1410 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1411
1412 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1413 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1414 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1415 params->ext_capab_len >= 8 &&
1416 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1417 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1418
1419 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1420 sta->sta.uapsd_queues = params->uapsd_queues;
1421 sta->sta.max_sp = params->max_sp;
1422 }
1423
1424 /* The sender might not have sent the last bit, consider it to be 0 */
1425 if (params->ext_capab_len >= 8) {
1426 u8 val = (params->ext_capab[7] &
1427 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1428
1429 /* we did get all the bits, take the MSB as well */
1430 if (params->ext_capab_len >= 9) {
1431 u8 val_msb = params->ext_capab[8] &
1432 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1433 val_msb <<= 1;
1434 val |= val_msb;
1435 }
1436
1437 switch (val) {
1438 case 1:
1439 sta->sta.max_amsdu_subframes = 32;
1440 break;
1441 case 2:
1442 sta->sta.max_amsdu_subframes = 16;
1443 break;
1444 case 3:
1445 sta->sta.max_amsdu_subframes = 8;
1446 break;
1447 default:
1448 sta->sta.max_amsdu_subframes = 0;
1449 }
1450 }
1451
1452 /*
1453 * cfg80211 validates this (1-2007) and allows setting the AID
1454 * only when creating a new station entry
1455 */
1456 if (params->aid)
1457 sta->sta.aid = params->aid;
1458
1459 /*
1460 * Some of the following updates would be racy if called on an
1461 * existing station, via ieee80211_change_station(). However,
1462 * all such changes are rejected by cfg80211 except for updates
1463 * changing the supported rates on an existing but not yet used
1464 * TDLS peer.
1465 */
1466
1467 if (params->listen_interval >= 0)
1468 sta->listen_interval = params->listen_interval;
1469
1470 if (params->sta_modify_mask & STATION_PARAM_APPLY_STA_TXPOWER) {
1471 sta->sta.txpwr.type = params->txpwr.type;
1472 if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
1473 sta->sta.txpwr.power = params->txpwr.power;
1474 ret = drv_sta_set_txpwr(local, sdata, sta);
1475 if (ret)
1476 return ret;
1477 }
1478
1479 if (params->supported_rates && params->supported_rates_len) {
1480 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1481 sband, params->supported_rates,
1482 params->supported_rates_len,
1483 &sta->sta.supp_rates[sband->band]);
1484 }
1485
1486 if (params->ht_capa)
1487 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1488 params->ht_capa, sta);
1489
1490 /* VHT can override some HT caps such as the A-MSDU max length */
1491 if (params->vht_capa)
1492 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1493 params->vht_capa, sta);
1494
1495 if (params->he_capa)
1496 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1497 (void *)params->he_capa,
1498 params->he_capa_len, sta);
1499
1500 if (params->opmode_notif_used) {
1501 /* returned value is only needed for rc update, but the
1502 * rc isn't initialized here yet, so ignore it
1503 */
1504 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1505 sband->band);
1506 }
1507
1508 if (params->support_p2p_ps >= 0)
1509 sta->sta.support_p2p_ps = params->support_p2p_ps;
1510
1511 if (ieee80211_vif_is_mesh(&sdata->vif))
1512 sta_apply_mesh_params(local, sta, params);
1513
1514 if (params->airtime_weight)
1515 sta->airtime_weight = params->airtime_weight;
1516
1517 /* set the STA state after all sta info from usermode has been set */
1518 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1519 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1520 ret = sta_apply_auth_flags(local, sta, mask, set);
1521 if (ret)
1522 return ret;
1523 }
1524
1525 return 0;
1526 }
1527
1528 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1529 const u8 *mac,
1530 struct station_parameters *params)
1531 {
1532 struct ieee80211_local *local = wiphy_priv(wiphy);
1533 struct sta_info *sta;
1534 struct ieee80211_sub_if_data *sdata;
1535 int err;
1536
1537 if (params->vlan) {
1538 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1539
1540 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1541 sdata->vif.type != NL80211_IFTYPE_AP)
1542 return -EINVAL;
1543 } else
1544 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1545
1546 if (ether_addr_equal(mac, sdata->vif.addr))
1547 return -EINVAL;
1548
1549 if (!is_valid_ether_addr(mac))
1550 return -EINVAL;
1551
1552 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1553 sdata->vif.type == NL80211_IFTYPE_STATION &&
1554 !sdata->u.mgd.associated)
1555 return -EINVAL;
1556
1557 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1558 if (!sta)
1559 return -ENOMEM;
1560
1561 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1562 sta->sta.tdls = true;
1563
1564 err = sta_apply_parameters(local, sta, params);
1565 if (err) {
1566 sta_info_free(local, sta);
1567 return err;
1568 }
1569
1570 /*
1571 * for TDLS and for unassociated station, rate control should be
1572 * initialized only when rates are known and station is marked
1573 * authorized/associated
1574 */
1575 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1576 test_sta_flag(sta, WLAN_STA_ASSOC))
1577 rate_control_rate_init(sta);
1578
1579 err = sta_info_insert_rcu(sta);
1580 if (err) {
1581 rcu_read_unlock();
1582 return err;
1583 }
1584
1585 rcu_read_unlock();
1586
1587 return 0;
1588 }
1589
1590 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1591 struct station_del_parameters *params)
1592 {
1593 struct ieee80211_sub_if_data *sdata;
1594
1595 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1596
1597 if (params->mac)
1598 return sta_info_destroy_addr_bss(sdata, params->mac);
1599
1600 sta_info_flush(sdata);
1601 return 0;
1602 }
1603
1604 static int ieee80211_change_station(struct wiphy *wiphy,
1605 struct net_device *dev, const u8 *mac,
1606 struct station_parameters *params)
1607 {
1608 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609 struct ieee80211_local *local = wiphy_priv(wiphy);
1610 struct sta_info *sta;
1611 struct ieee80211_sub_if_data *vlansdata;
1612 enum cfg80211_station_type statype;
1613 int err;
1614
1615 mutex_lock(&local->sta_mtx);
1616
1617 sta = sta_info_get_bss(sdata, mac);
1618 if (!sta) {
1619 err = -ENOENT;
1620 goto out_err;
1621 }
1622
1623 switch (sdata->vif.type) {
1624 case NL80211_IFTYPE_MESH_POINT:
1625 if (sdata->u.mesh.user_mpm)
1626 statype = CFG80211_STA_MESH_PEER_USER;
1627 else
1628 statype = CFG80211_STA_MESH_PEER_KERNEL;
1629 break;
1630 case NL80211_IFTYPE_ADHOC:
1631 statype = CFG80211_STA_IBSS;
1632 break;
1633 case NL80211_IFTYPE_STATION:
1634 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1635 statype = CFG80211_STA_AP_STA;
1636 break;
1637 }
1638 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1639 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1640 else
1641 statype = CFG80211_STA_TDLS_PEER_SETUP;
1642 break;
1643 case NL80211_IFTYPE_AP:
1644 case NL80211_IFTYPE_AP_VLAN:
1645 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1646 statype = CFG80211_STA_AP_CLIENT;
1647 else
1648 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1649 break;
1650 default:
1651 err = -EOPNOTSUPP;
1652 goto out_err;
1653 }
1654
1655 err = cfg80211_check_station_change(wiphy, params, statype);
1656 if (err)
1657 goto out_err;
1658
1659 if (params->vlan && params->vlan != sta->sdata->dev) {
1660 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1661
1662 if (params->vlan->ieee80211_ptr->use_4addr) {
1663 if (vlansdata->u.vlan.sta) {
1664 err = -EBUSY;
1665 goto out_err;
1666 }
1667
1668 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1669 __ieee80211_check_fast_rx_iface(vlansdata);
1670 }
1671
1672 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1673 sta->sdata->u.vlan.sta)
1674 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1675
1676 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1677 ieee80211_vif_dec_num_mcast(sta->sdata);
1678
1679 sta->sdata = vlansdata;
1680 ieee80211_check_fast_xmit(sta);
1681
1682 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
1683 ieee80211_vif_inc_num_mcast(sta->sdata);
1684 cfg80211_send_layer2_update(sta->sdata->dev,
1685 sta->sta.addr);
1686 }
1687 }
1688
1689 err = sta_apply_parameters(local, sta, params);
1690 if (err)
1691 goto out_err;
1692
1693 mutex_unlock(&local->sta_mtx);
1694
1695 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1696 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1697 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1698 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1699 sta_info_tx_streams(sta) != 1) {
1700 ht_dbg(sta->sdata,
1701 "%pM just authorized and MIMO capable - update SMPS\n",
1702 sta->sta.addr);
1703 ieee80211_send_smps_action(sta->sdata,
1704 sta->sdata->bss->req_smps,
1705 sta->sta.addr,
1706 sta->sdata->vif.bss_conf.bssid);
1707 }
1708
1709 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1710 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1711 ieee80211_recalc_ps(local);
1712 ieee80211_recalc_ps_vif(sdata);
1713 }
1714
1715 return 0;
1716 out_err:
1717 mutex_unlock(&local->sta_mtx);
1718 return err;
1719 }
1720
1721 #ifdef CONFIG_MAC80211_MESH
1722 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1723 const u8 *dst, const u8 *next_hop)
1724 {
1725 struct ieee80211_sub_if_data *sdata;
1726 struct mesh_path *mpath;
1727 struct sta_info *sta;
1728
1729 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731 rcu_read_lock();
1732 sta = sta_info_get(sdata, next_hop);
1733 if (!sta) {
1734 rcu_read_unlock();
1735 return -ENOENT;
1736 }
1737
1738 mpath = mesh_path_add(sdata, dst);
1739 if (IS_ERR(mpath)) {
1740 rcu_read_unlock();
1741 return PTR_ERR(mpath);
1742 }
1743
1744 mesh_path_fix_nexthop(mpath, sta);
1745
1746 rcu_read_unlock();
1747 return 0;
1748 }
1749
1750 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1751 const u8 *dst)
1752 {
1753 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1754
1755 if (dst)
1756 return mesh_path_del(sdata, dst);
1757
1758 mesh_path_flush_by_iface(sdata);
1759 return 0;
1760 }
1761
1762 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1763 const u8 *dst, const u8 *next_hop)
1764 {
1765 struct ieee80211_sub_if_data *sdata;
1766 struct mesh_path *mpath;
1767 struct sta_info *sta;
1768
1769 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1770
1771 rcu_read_lock();
1772
1773 sta = sta_info_get(sdata, next_hop);
1774 if (!sta) {
1775 rcu_read_unlock();
1776 return -ENOENT;
1777 }
1778
1779 mpath = mesh_path_lookup(sdata, dst);
1780 if (!mpath) {
1781 rcu_read_unlock();
1782 return -ENOENT;
1783 }
1784
1785 mesh_path_fix_nexthop(mpath, sta);
1786
1787 rcu_read_unlock();
1788 return 0;
1789 }
1790
1791 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1792 struct mpath_info *pinfo)
1793 {
1794 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1795
1796 if (next_hop_sta)
1797 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1798 else
1799 eth_zero_addr(next_hop);
1800
1801 memset(pinfo, 0, sizeof(*pinfo));
1802
1803 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1804
1805 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1806 MPATH_INFO_SN |
1807 MPATH_INFO_METRIC |
1808 MPATH_INFO_EXPTIME |
1809 MPATH_INFO_DISCOVERY_TIMEOUT |
1810 MPATH_INFO_DISCOVERY_RETRIES |
1811 MPATH_INFO_FLAGS |
1812 MPATH_INFO_HOP_COUNT |
1813 MPATH_INFO_PATH_CHANGE;
1814
1815 pinfo->frame_qlen = mpath->frame_queue.qlen;
1816 pinfo->sn = mpath->sn;
1817 pinfo->metric = mpath->metric;
1818 if (time_before(jiffies, mpath->exp_time))
1819 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1820 pinfo->discovery_timeout =
1821 jiffies_to_msecs(mpath->discovery_timeout);
1822 pinfo->discovery_retries = mpath->discovery_retries;
1823 if (mpath->flags & MESH_PATH_ACTIVE)
1824 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1825 if (mpath->flags & MESH_PATH_RESOLVING)
1826 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1827 if (mpath->flags & MESH_PATH_SN_VALID)
1828 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1829 if (mpath->flags & MESH_PATH_FIXED)
1830 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1831 if (mpath->flags & MESH_PATH_RESOLVED)
1832 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1833 pinfo->hop_count = mpath->hop_count;
1834 pinfo->path_change_count = mpath->path_change_count;
1835 }
1836
1837 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1838 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1839
1840 {
1841 struct ieee80211_sub_if_data *sdata;
1842 struct mesh_path *mpath;
1843
1844 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1845
1846 rcu_read_lock();
1847 mpath = mesh_path_lookup(sdata, dst);
1848 if (!mpath) {
1849 rcu_read_unlock();
1850 return -ENOENT;
1851 }
1852 memcpy(dst, mpath->dst, ETH_ALEN);
1853 mpath_set_pinfo(mpath, next_hop, pinfo);
1854 rcu_read_unlock();
1855 return 0;
1856 }
1857
1858 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1859 int idx, u8 *dst, u8 *next_hop,
1860 struct mpath_info *pinfo)
1861 {
1862 struct ieee80211_sub_if_data *sdata;
1863 struct mesh_path *mpath;
1864
1865 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1866
1867 rcu_read_lock();
1868 mpath = mesh_path_lookup_by_idx(sdata, idx);
1869 if (!mpath) {
1870 rcu_read_unlock();
1871 return -ENOENT;
1872 }
1873 memcpy(dst, mpath->dst, ETH_ALEN);
1874 mpath_set_pinfo(mpath, next_hop, pinfo);
1875 rcu_read_unlock();
1876 return 0;
1877 }
1878
1879 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1880 struct mpath_info *pinfo)
1881 {
1882 memset(pinfo, 0, sizeof(*pinfo));
1883 memcpy(mpp, mpath->mpp, ETH_ALEN);
1884
1885 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1886 }
1887
1888 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1889 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1890
1891 {
1892 struct ieee80211_sub_if_data *sdata;
1893 struct mesh_path *mpath;
1894
1895 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1896
1897 rcu_read_lock();
1898 mpath = mpp_path_lookup(sdata, dst);
1899 if (!mpath) {
1900 rcu_read_unlock();
1901 return -ENOENT;
1902 }
1903 memcpy(dst, mpath->dst, ETH_ALEN);
1904 mpp_set_pinfo(mpath, mpp, pinfo);
1905 rcu_read_unlock();
1906 return 0;
1907 }
1908
1909 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1910 int idx, u8 *dst, u8 *mpp,
1911 struct mpath_info *pinfo)
1912 {
1913 struct ieee80211_sub_if_data *sdata;
1914 struct mesh_path *mpath;
1915
1916 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1917
1918 rcu_read_lock();
1919 mpath = mpp_path_lookup_by_idx(sdata, idx);
1920 if (!mpath) {
1921 rcu_read_unlock();
1922 return -ENOENT;
1923 }
1924 memcpy(dst, mpath->dst, ETH_ALEN);
1925 mpp_set_pinfo(mpath, mpp, pinfo);
1926 rcu_read_unlock();
1927 return 0;
1928 }
1929
1930 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1931 struct net_device *dev,
1932 struct mesh_config *conf)
1933 {
1934 struct ieee80211_sub_if_data *sdata;
1935 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1936
1937 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1938 return 0;
1939 }
1940
1941 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1942 {
1943 return (mask >> (parm-1)) & 0x1;
1944 }
1945
1946 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1947 const struct mesh_setup *setup)
1948 {
1949 u8 *new_ie;
1950 const u8 *old_ie;
1951 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1952 struct ieee80211_sub_if_data, u.mesh);
1953
1954 /* allocate information elements */
1955 new_ie = NULL;
1956 old_ie = ifmsh->ie;
1957
1958 if (setup->ie_len) {
1959 new_ie = kmemdup(setup->ie, setup->ie_len,
1960 GFP_KERNEL);
1961 if (!new_ie)
1962 return -ENOMEM;
1963 }
1964 ifmsh->ie_len = setup->ie_len;
1965 ifmsh->ie = new_ie;
1966 kfree(old_ie);
1967
1968 /* now copy the rest of the setup parameters */
1969 ifmsh->mesh_id_len = setup->mesh_id_len;
1970 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1971 ifmsh->mesh_sp_id = setup->sync_method;
1972 ifmsh->mesh_pp_id = setup->path_sel_proto;
1973 ifmsh->mesh_pm_id = setup->path_metric;
1974 ifmsh->user_mpm = setup->user_mpm;
1975 ifmsh->mesh_auth_id = setup->auth_id;
1976 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1977 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1978 if (setup->is_authenticated)
1979 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1980 if (setup->is_secure)
1981 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1982
1983 /* mcast rate setting in Mesh Node */
1984 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1985 sizeof(setup->mcast_rate));
1986 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1987
1988 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1989 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1990
1991 return 0;
1992 }
1993
1994 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1995 struct net_device *dev, u32 mask,
1996 const struct mesh_config *nconf)
1997 {
1998 struct mesh_config *conf;
1999 struct ieee80211_sub_if_data *sdata;
2000 struct ieee80211_if_mesh *ifmsh;
2001
2002 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2003 ifmsh = &sdata->u.mesh;
2004
2005 /* Set the config options which we are interested in setting */
2006 conf = &(sdata->u.mesh.mshcfg);
2007 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
2008 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
2009 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
2010 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
2011 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
2012 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
2013 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
2014 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
2015 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
2016 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
2017 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
2018 conf->dot11MeshTTL = nconf->dot11MeshTTL;
2019 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
2020 conf->element_ttl = nconf->element_ttl;
2021 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
2022 if (ifmsh->user_mpm)
2023 return -EBUSY;
2024 conf->auto_open_plinks = nconf->auto_open_plinks;
2025 }
2026 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
2027 conf->dot11MeshNbrOffsetMaxNeighbor =
2028 nconf->dot11MeshNbrOffsetMaxNeighbor;
2029 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
2030 conf->dot11MeshHWMPmaxPREQretries =
2031 nconf->dot11MeshHWMPmaxPREQretries;
2032 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
2033 conf->path_refresh_time = nconf->path_refresh_time;
2034 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
2035 conf->min_discovery_timeout = nconf->min_discovery_timeout;
2036 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
2037 conf->dot11MeshHWMPactivePathTimeout =
2038 nconf->dot11MeshHWMPactivePathTimeout;
2039 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
2040 conf->dot11MeshHWMPpreqMinInterval =
2041 nconf->dot11MeshHWMPpreqMinInterval;
2042 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
2043 conf->dot11MeshHWMPperrMinInterval =
2044 nconf->dot11MeshHWMPperrMinInterval;
2045 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
2046 mask))
2047 conf->dot11MeshHWMPnetDiameterTraversalTime =
2048 nconf->dot11MeshHWMPnetDiameterTraversalTime;
2049 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
2050 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
2051 ieee80211_mesh_root_setup(ifmsh);
2052 }
2053 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
2054 /* our current gate announcement implementation rides on root
2055 * announcements, so require this ifmsh to also be a root node
2056 * */
2057 if (nconf->dot11MeshGateAnnouncementProtocol &&
2058 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
2059 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
2060 ieee80211_mesh_root_setup(ifmsh);
2061 }
2062 conf->dot11MeshGateAnnouncementProtocol =
2063 nconf->dot11MeshGateAnnouncementProtocol;
2064 }
2065 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
2066 conf->dot11MeshHWMPRannInterval =
2067 nconf->dot11MeshHWMPRannInterval;
2068 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
2069 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
2070 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
2071 /* our RSSI threshold implementation is supported only for
2072 * devices that report signal in dBm.
2073 */
2074 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
2075 return -ENOTSUPP;
2076 conf->rssi_threshold = nconf->rssi_threshold;
2077 }
2078 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
2079 conf->ht_opmode = nconf->ht_opmode;
2080 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
2081 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
2082 }
2083 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
2084 conf->dot11MeshHWMPactivePathToRootTimeout =
2085 nconf->dot11MeshHWMPactivePathToRootTimeout;
2086 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
2087 conf->dot11MeshHWMProotInterval =
2088 nconf->dot11MeshHWMProotInterval;
2089 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
2090 conf->dot11MeshHWMPconfirmationInterval =
2091 nconf->dot11MeshHWMPconfirmationInterval;
2092 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
2093 conf->power_mode = nconf->power_mode;
2094 ieee80211_mps_local_status_update(sdata);
2095 }
2096 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2097 conf->dot11MeshAwakeWindowDuration =
2098 nconf->dot11MeshAwakeWindowDuration;
2099 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2100 conf->plink_timeout = nconf->plink_timeout;
2101 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask))
2102 conf->dot11MeshConnectedToMeshGate =
2103 nconf->dot11MeshConnectedToMeshGate;
2104 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2105 return 0;
2106 }
2107
2108 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2109 const struct mesh_config *conf,
2110 const struct mesh_setup *setup)
2111 {
2112 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2113 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2114 int err;
2115
2116 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2117 err = copy_mesh_setup(ifmsh, setup);
2118 if (err)
2119 return err;
2120
2121 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
2122
2123 /* can mesh use other SMPS modes? */
2124 sdata->smps_mode = IEEE80211_SMPS_OFF;
2125 sdata->needed_rx_chains = sdata->local->rx_chains;
2126
2127 mutex_lock(&sdata->local->mtx);
2128 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2129 IEEE80211_CHANCTX_SHARED);
2130 mutex_unlock(&sdata->local->mtx);
2131 if (err)
2132 return err;
2133
2134 return ieee80211_start_mesh(sdata);
2135 }
2136
2137 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2138 {
2139 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2140
2141 ieee80211_stop_mesh(sdata);
2142 mutex_lock(&sdata->local->mtx);
2143 ieee80211_vif_release_channel(sdata);
2144 kfree(sdata->u.mesh.ie);
2145 mutex_unlock(&sdata->local->mtx);
2146
2147 return 0;
2148 }
2149 #endif
2150
2151 static int ieee80211_change_bss(struct wiphy *wiphy,
2152 struct net_device *dev,
2153 struct bss_parameters *params)
2154 {
2155 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2156 struct ieee80211_supported_band *sband;
2157 u32 changed = 0;
2158
2159 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2160 return -ENOENT;
2161
2162 sband = ieee80211_get_sband(sdata);
2163 if (!sband)
2164 return -EINVAL;
2165
2166 if (params->use_cts_prot >= 0) {
2167 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2168 changed |= BSS_CHANGED_ERP_CTS_PROT;
2169 }
2170 if (params->use_short_preamble >= 0) {
2171 sdata->vif.bss_conf.use_short_preamble =
2172 params->use_short_preamble;
2173 changed |= BSS_CHANGED_ERP_PREAMBLE;
2174 }
2175
2176 if (!sdata->vif.bss_conf.use_short_slot &&
2177 sband->band == NL80211_BAND_5GHZ) {
2178 sdata->vif.bss_conf.use_short_slot = true;
2179 changed |= BSS_CHANGED_ERP_SLOT;
2180 }
2181
2182 if (params->use_short_slot_time >= 0) {
2183 sdata->vif.bss_conf.use_short_slot =
2184 params->use_short_slot_time;
2185 changed |= BSS_CHANGED_ERP_SLOT;
2186 }
2187
2188 if (params->basic_rates) {
2189 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2190 wiphy->bands[sband->band],
2191 params->basic_rates,
2192 params->basic_rates_len,
2193 &sdata->vif.bss_conf.basic_rates);
2194 changed |= BSS_CHANGED_BASIC_RATES;
2195 ieee80211_check_rate_mask(sdata);
2196 }
2197
2198 if (params->ap_isolate >= 0) {
2199 if (params->ap_isolate)
2200 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2201 else
2202 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2203 ieee80211_check_fast_rx_iface(sdata);
2204 }
2205
2206 if (params->ht_opmode >= 0) {
2207 sdata->vif.bss_conf.ht_operation_mode =
2208 (u16) params->ht_opmode;
2209 changed |= BSS_CHANGED_HT;
2210 }
2211
2212 if (params->p2p_ctwindow >= 0) {
2213 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2214 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2215 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2216 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2217 changed |= BSS_CHANGED_P2P_PS;
2218 }
2219
2220 if (params->p2p_opp_ps > 0) {
2221 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2222 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2223 changed |= BSS_CHANGED_P2P_PS;
2224 } else if (params->p2p_opp_ps == 0) {
2225 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2226 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2227 changed |= BSS_CHANGED_P2P_PS;
2228 }
2229
2230 ieee80211_bss_info_change_notify(sdata, changed);
2231
2232 return 0;
2233 }
2234
2235 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2236 struct net_device *dev,
2237 struct ieee80211_txq_params *params)
2238 {
2239 struct ieee80211_local *local = wiphy_priv(wiphy);
2240 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241 struct ieee80211_tx_queue_params p;
2242
2243 if (!local->ops->conf_tx)
2244 return -EOPNOTSUPP;
2245
2246 if (local->hw.queues < IEEE80211_NUM_ACS)
2247 return -EOPNOTSUPP;
2248
2249 memset(&p, 0, sizeof(p));
2250 p.aifs = params->aifs;
2251 p.cw_max = params->cwmax;
2252 p.cw_min = params->cwmin;
2253 p.txop = params->txop;
2254
2255 /*
2256 * Setting tx queue params disables u-apsd because it's only
2257 * called in master mode.
2258 */
2259 p.uapsd = false;
2260
2261 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2262
2263 sdata->tx_conf[params->ac] = p;
2264 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2265 wiphy_debug(local->hw.wiphy,
2266 "failed to set TX queue parameters for AC %d\n",
2267 params->ac);
2268 return -EINVAL;
2269 }
2270
2271 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2272
2273 return 0;
2274 }
2275
2276 #ifdef CONFIG_PM
2277 static int ieee80211_suspend(struct wiphy *wiphy,
2278 struct cfg80211_wowlan *wowlan)
2279 {
2280 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2281 }
2282
2283 static int ieee80211_resume(struct wiphy *wiphy)
2284 {
2285 return __ieee80211_resume(wiphy_priv(wiphy));
2286 }
2287 #else
2288 #define ieee80211_suspend NULL
2289 #define ieee80211_resume NULL
2290 #endif
2291
2292 static int ieee80211_scan(struct wiphy *wiphy,
2293 struct cfg80211_scan_request *req)
2294 {
2295 struct ieee80211_sub_if_data *sdata;
2296
2297 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2298
2299 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2300 case NL80211_IFTYPE_STATION:
2301 case NL80211_IFTYPE_ADHOC:
2302 case NL80211_IFTYPE_MESH_POINT:
2303 case NL80211_IFTYPE_P2P_CLIENT:
2304 case NL80211_IFTYPE_P2P_DEVICE:
2305 break;
2306 case NL80211_IFTYPE_P2P_GO:
2307 if (sdata->local->ops->hw_scan)
2308 break;
2309 /*
2310 * FIXME: implement NoA while scanning in software,
2311 * for now fall through to allow scanning only when
2312 * beaconing hasn't been configured yet
2313 */
2314 /* fall through */
2315 case NL80211_IFTYPE_AP:
2316 /*
2317 * If the scan has been forced (and the driver supports
2318 * forcing), don't care about being beaconing already.
2319 * This will create problems to the attached stations (e.g. all
2320 * the frames sent while scanning on other channel will be
2321 * lost)
2322 */
2323 if (sdata->u.ap.beacon &&
2324 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2325 !(req->flags & NL80211_SCAN_FLAG_AP)))
2326 return -EOPNOTSUPP;
2327 break;
2328 case NL80211_IFTYPE_NAN:
2329 default:
2330 return -EOPNOTSUPP;
2331 }
2332
2333 return ieee80211_request_scan(sdata, req);
2334 }
2335
2336 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2337 {
2338 ieee80211_scan_cancel(wiphy_priv(wiphy));
2339 }
2340
2341 static int
2342 ieee80211_sched_scan_start(struct wiphy *wiphy,
2343 struct net_device *dev,
2344 struct cfg80211_sched_scan_request *req)
2345 {
2346 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2347
2348 if (!sdata->local->ops->sched_scan_start)
2349 return -EOPNOTSUPP;
2350
2351 return ieee80211_request_sched_scan_start(sdata, req);
2352 }
2353
2354 static int
2355 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2356 u64 reqid)
2357 {
2358 struct ieee80211_local *local = wiphy_priv(wiphy);
2359
2360 if (!local->ops->sched_scan_stop)
2361 return -EOPNOTSUPP;
2362
2363 return ieee80211_request_sched_scan_stop(local);
2364 }
2365
2366 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2367 struct cfg80211_auth_request *req)
2368 {
2369 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2370 }
2371
2372 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2373 struct cfg80211_assoc_request *req)
2374 {
2375 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2376 }
2377
2378 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2379 struct cfg80211_deauth_request *req)
2380 {
2381 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2382 }
2383
2384 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2385 struct cfg80211_disassoc_request *req)
2386 {
2387 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2388 }
2389
2390 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2391 struct cfg80211_ibss_params *params)
2392 {
2393 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2394 }
2395
2396 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2397 {
2398 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2399 }
2400
2401 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2402 struct ocb_setup *setup)
2403 {
2404 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2405 }
2406
2407 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2408 {
2409 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2410 }
2411
2412 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2413 int rate[NUM_NL80211_BANDS])
2414 {
2415 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2416
2417 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2418 sizeof(int) * NUM_NL80211_BANDS);
2419
2420 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2421
2422 return 0;
2423 }
2424
2425 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2426 {
2427 struct ieee80211_local *local = wiphy_priv(wiphy);
2428 int err;
2429
2430 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2431 ieee80211_check_fast_xmit_all(local);
2432
2433 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2434
2435 if (err) {
2436 ieee80211_check_fast_xmit_all(local);
2437 return err;
2438 }
2439 }
2440
2441 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2442 (changed & WIPHY_PARAM_DYN_ACK)) {
2443 s16 coverage_class;
2444
2445 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2446 wiphy->coverage_class : -1;
2447 err = drv_set_coverage_class(local, coverage_class);
2448
2449 if (err)
2450 return err;
2451 }
2452
2453 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2454 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2455
2456 if (err)
2457 return err;
2458 }
2459
2460 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2461 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2462 return -EINVAL;
2463 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2464 }
2465 if (changed & WIPHY_PARAM_RETRY_LONG) {
2466 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2467 return -EINVAL;
2468 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2469 }
2470 if (changed &
2471 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2472 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2473
2474 if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2475 WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2476 WIPHY_PARAM_TXQ_QUANTUM))
2477 ieee80211_txq_set_params(local);
2478
2479 return 0;
2480 }
2481
2482 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2483 struct wireless_dev *wdev,
2484 enum nl80211_tx_power_setting type, int mbm)
2485 {
2486 struct ieee80211_local *local = wiphy_priv(wiphy);
2487 struct ieee80211_sub_if_data *sdata;
2488 enum nl80211_tx_power_setting txp_type = type;
2489 bool update_txp_type = false;
2490 bool has_monitor = false;
2491
2492 if (wdev) {
2493 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2494
2495 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2496 sdata = rtnl_dereference(local->monitor_sdata);
2497 if (!sdata)
2498 return -EOPNOTSUPP;
2499 }
2500
2501 switch (type) {
2502 case NL80211_TX_POWER_AUTOMATIC:
2503 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2504 txp_type = NL80211_TX_POWER_LIMITED;
2505 break;
2506 case NL80211_TX_POWER_LIMITED:
2507 case NL80211_TX_POWER_FIXED:
2508 if (mbm < 0 || (mbm % 100))
2509 return -EOPNOTSUPP;
2510 sdata->user_power_level = MBM_TO_DBM(mbm);
2511 break;
2512 }
2513
2514 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2515 update_txp_type = true;
2516 sdata->vif.bss_conf.txpower_type = txp_type;
2517 }
2518
2519 ieee80211_recalc_txpower(sdata, update_txp_type);
2520
2521 return 0;
2522 }
2523
2524 switch (type) {
2525 case NL80211_TX_POWER_AUTOMATIC:
2526 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2527 txp_type = NL80211_TX_POWER_LIMITED;
2528 break;
2529 case NL80211_TX_POWER_LIMITED:
2530 case NL80211_TX_POWER_FIXED:
2531 if (mbm < 0 || (mbm % 100))
2532 return -EOPNOTSUPP;
2533 local->user_power_level = MBM_TO_DBM(mbm);
2534 break;
2535 }
2536
2537 mutex_lock(&local->iflist_mtx);
2538 list_for_each_entry(sdata, &local->interfaces, list) {
2539 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2540 has_monitor = true;
2541 continue;
2542 }
2543 sdata->user_power_level = local->user_power_level;
2544 if (txp_type != sdata->vif.bss_conf.txpower_type)
2545 update_txp_type = true;
2546 sdata->vif.bss_conf.txpower_type = txp_type;
2547 }
2548 list_for_each_entry(sdata, &local->interfaces, list) {
2549 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2550 continue;
2551 ieee80211_recalc_txpower(sdata, update_txp_type);
2552 }
2553 mutex_unlock(&local->iflist_mtx);
2554
2555 if (has_monitor) {
2556 sdata = rtnl_dereference(local->monitor_sdata);
2557 if (sdata) {
2558 sdata->user_power_level = local->user_power_level;
2559 if (txp_type != sdata->vif.bss_conf.txpower_type)
2560 update_txp_type = true;
2561 sdata->vif.bss_conf.txpower_type = txp_type;
2562
2563 ieee80211_recalc_txpower(sdata, update_txp_type);
2564 }
2565 }
2566
2567 return 0;
2568 }
2569
2570 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2571 struct wireless_dev *wdev,
2572 int *dbm)
2573 {
2574 struct ieee80211_local *local = wiphy_priv(wiphy);
2575 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2576
2577 if (local->ops->get_txpower)
2578 return drv_get_txpower(local, sdata, dbm);
2579
2580 if (!local->use_chanctx)
2581 *dbm = local->hw.conf.power_level;
2582 else
2583 *dbm = sdata->vif.bss_conf.txpower;
2584
2585 return 0;
2586 }
2587
2588 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2589 const u8 *addr)
2590 {
2591 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2592
2593 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2594
2595 return 0;
2596 }
2597
2598 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2599 {
2600 struct ieee80211_local *local = wiphy_priv(wiphy);
2601
2602 drv_rfkill_poll(local);
2603 }
2604
2605 #ifdef CONFIG_NL80211_TESTMODE
2606 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2607 struct wireless_dev *wdev,
2608 void *data, int len)
2609 {
2610 struct ieee80211_local *local = wiphy_priv(wiphy);
2611 struct ieee80211_vif *vif = NULL;
2612
2613 if (!local->ops->testmode_cmd)
2614 return -EOPNOTSUPP;
2615
2616 if (wdev) {
2617 struct ieee80211_sub_if_data *sdata;
2618
2619 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2620 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2621 vif = &sdata->vif;
2622 }
2623
2624 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2625 }
2626
2627 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2628 struct sk_buff *skb,
2629 struct netlink_callback *cb,
2630 void *data, int len)
2631 {
2632 struct ieee80211_local *local = wiphy_priv(wiphy);
2633
2634 if (!local->ops->testmode_dump)
2635 return -EOPNOTSUPP;
2636
2637 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2638 }
2639 #endif
2640
2641 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2642 enum ieee80211_smps_mode smps_mode)
2643 {
2644 struct sta_info *sta;
2645 enum ieee80211_smps_mode old_req;
2646
2647 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2648 return -EINVAL;
2649
2650 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2651 return 0;
2652
2653 old_req = sdata->u.ap.req_smps;
2654 sdata->u.ap.req_smps = smps_mode;
2655
2656 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2657 if (old_req == smps_mode ||
2658 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2659 return 0;
2660
2661 ht_dbg(sdata,
2662 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2663 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2664
2665 mutex_lock(&sdata->local->sta_mtx);
2666 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2667 /*
2668 * Only stations associated to our AP and
2669 * associated VLANs
2670 */
2671 if (sta->sdata->bss != &sdata->u.ap)
2672 continue;
2673
2674 /* This station doesn't support MIMO - skip it */
2675 if (sta_info_tx_streams(sta) == 1)
2676 continue;
2677
2678 /*
2679 * Don't wake up a STA just to send the action frame
2680 * unless we are getting more restrictive.
2681 */
2682 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2683 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2684 smps_mode)) {
2685 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2686 sta->sta.addr);
2687 continue;
2688 }
2689
2690 /*
2691 * If the STA is not authorized, wait until it gets
2692 * authorized and the action frame will be sent then.
2693 */
2694 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2695 continue;
2696
2697 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2698 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2699 sdata->vif.bss_conf.bssid);
2700 }
2701 mutex_unlock(&sdata->local->sta_mtx);
2702
2703 sdata->smps_mode = smps_mode;
2704 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2705
2706 return 0;
2707 }
2708
2709 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2710 enum ieee80211_smps_mode smps_mode)
2711 {
2712 const u8 *ap;
2713 enum ieee80211_smps_mode old_req;
2714 int err;
2715 struct sta_info *sta;
2716 bool tdls_peer_found = false;
2717
2718 lockdep_assert_held(&sdata->wdev.mtx);
2719
2720 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2721 return -EINVAL;
2722
2723 old_req = sdata->u.mgd.req_smps;
2724 sdata->u.mgd.req_smps = smps_mode;
2725
2726 if (old_req == smps_mode &&
2727 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2728 return 0;
2729
2730 /*
2731 * If not associated, or current association is not an HT
2732 * association, there's no need to do anything, just store
2733 * the new value until we associate.
2734 */
2735 if (!sdata->u.mgd.associated ||
2736 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2737 return 0;
2738
2739 ap = sdata->u.mgd.associated->bssid;
2740
2741 rcu_read_lock();
2742 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2743 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2744 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2745 continue;
2746
2747 tdls_peer_found = true;
2748 break;
2749 }
2750 rcu_read_unlock();
2751
2752 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2753 if (tdls_peer_found || !sdata->u.mgd.powersave)
2754 smps_mode = IEEE80211_SMPS_OFF;
2755 else
2756 smps_mode = IEEE80211_SMPS_DYNAMIC;
2757 }
2758
2759 /* send SM PS frame to AP */
2760 err = ieee80211_send_smps_action(sdata, smps_mode,
2761 ap, ap);
2762 if (err)
2763 sdata->u.mgd.req_smps = old_req;
2764 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2765 ieee80211_teardown_tdls_peers(sdata);
2766
2767 return err;
2768 }
2769
2770 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2771 bool enabled, int timeout)
2772 {
2773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2774 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2775
2776 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2777 return -EOPNOTSUPP;
2778
2779 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2780 return -EOPNOTSUPP;
2781
2782 if (enabled == sdata->u.mgd.powersave &&
2783 timeout == local->dynamic_ps_forced_timeout)
2784 return 0;
2785
2786 sdata->u.mgd.powersave = enabled;
2787 local->dynamic_ps_forced_timeout = timeout;
2788
2789 /* no change, but if automatic follow powersave */
2790 sdata_lock(sdata);
2791 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2792 sdata_unlock(sdata);
2793
2794 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2795 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2796
2797 ieee80211_recalc_ps(local);
2798 ieee80211_recalc_ps_vif(sdata);
2799 ieee80211_check_fast_rx_iface(sdata);
2800
2801 return 0;
2802 }
2803
2804 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2805 struct net_device *dev,
2806 s32 rssi_thold, u32 rssi_hyst)
2807 {
2808 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2809 struct ieee80211_vif *vif = &sdata->vif;
2810 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2811
2812 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2813 rssi_hyst == bss_conf->cqm_rssi_hyst)
2814 return 0;
2815
2816 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2817 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2818 return -EOPNOTSUPP;
2819
2820 bss_conf->cqm_rssi_thold = rssi_thold;
2821 bss_conf->cqm_rssi_hyst = rssi_hyst;
2822 bss_conf->cqm_rssi_low = 0;
2823 bss_conf->cqm_rssi_high = 0;
2824 sdata->u.mgd.last_cqm_event_signal = 0;
2825
2826 /* tell the driver upon association, unless already associated */
2827 if (sdata->u.mgd.associated &&
2828 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2829 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2830
2831 return 0;
2832 }
2833
2834 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2835 struct net_device *dev,
2836 s32 rssi_low, s32 rssi_high)
2837 {
2838 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2839 struct ieee80211_vif *vif = &sdata->vif;
2840 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2841
2842 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2843 return -EOPNOTSUPP;
2844
2845 bss_conf->cqm_rssi_low = rssi_low;
2846 bss_conf->cqm_rssi_high = rssi_high;
2847 bss_conf->cqm_rssi_thold = 0;
2848 bss_conf->cqm_rssi_hyst = 0;
2849 sdata->u.mgd.last_cqm_event_signal = 0;
2850
2851 /* tell the driver upon association, unless already associated */
2852 if (sdata->u.mgd.associated &&
2853 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2855
2856 return 0;
2857 }
2858
2859 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2860 struct net_device *dev,
2861 const u8 *addr,
2862 const struct cfg80211_bitrate_mask *mask)
2863 {
2864 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2865 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2866 int i, ret;
2867
2868 if (!ieee80211_sdata_running(sdata))
2869 return -ENETDOWN;
2870
2871 /*
2872 * If active validate the setting and reject it if it doesn't leave
2873 * at least one basic rate usable, since we really have to be able
2874 * to send something, and if we're an AP we have to be able to do
2875 * so at a basic rate so that all clients can receive it.
2876 */
2877 if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2878 sdata->vif.bss_conf.chandef.chan) {
2879 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2880 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2881
2882 if (!(mask->control[band].legacy & basic_rates))
2883 return -EINVAL;
2884 }
2885
2886 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2887 ret = drv_set_bitrate_mask(local, sdata, mask);
2888 if (ret)
2889 return ret;
2890 }
2891
2892 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2893 struct ieee80211_supported_band *sband = wiphy->bands[i];
2894 int j;
2895
2896 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2897 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2898 sizeof(mask->control[i].ht_mcs));
2899 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2900 mask->control[i].vht_mcs,
2901 sizeof(mask->control[i].vht_mcs));
2902
2903 sdata->rc_has_mcs_mask[i] = false;
2904 sdata->rc_has_vht_mcs_mask[i] = false;
2905 if (!sband)
2906 continue;
2907
2908 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2909 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2910 sdata->rc_has_mcs_mask[i] = true;
2911 break;
2912 }
2913 }
2914
2915 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2916 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2917 sdata->rc_has_vht_mcs_mask[i] = true;
2918 break;
2919 }
2920 }
2921 }
2922
2923 return 0;
2924 }
2925
2926 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2927 struct net_device *dev,
2928 struct cfg80211_chan_def *chandef,
2929 u32 cac_time_ms)
2930 {
2931 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2932 struct ieee80211_local *local = sdata->local;
2933 int err;
2934
2935 mutex_lock(&local->mtx);
2936 if (!list_empty(&local->roc_list) || local->scanning) {
2937 err = -EBUSY;
2938 goto out_unlock;
2939 }
2940
2941 /* whatever, but channel contexts should not complain about that one */
2942 sdata->smps_mode = IEEE80211_SMPS_OFF;
2943 sdata->needed_rx_chains = local->rx_chains;
2944
2945 err = ieee80211_vif_use_channel(sdata, chandef,
2946 IEEE80211_CHANCTX_SHARED);
2947 if (err)
2948 goto out_unlock;
2949
2950 ieee80211_queue_delayed_work(&sdata->local->hw,
2951 &sdata->dfs_cac_timer_work,
2952 msecs_to_jiffies(cac_time_ms));
2953
2954 out_unlock:
2955 mutex_unlock(&local->mtx);
2956 return err;
2957 }
2958
2959 static void ieee80211_end_cac(struct wiphy *wiphy,
2960 struct net_device *dev)
2961 {
2962 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2963 struct ieee80211_local *local = sdata->local;
2964
2965 mutex_lock(&local->mtx);
2966 list_for_each_entry(sdata, &local->interfaces, list) {
2967 /* it might be waiting for the local->mtx, but then
2968 * by the time it gets it, sdata->wdev.cac_started
2969 * will no longer be true
2970 */
2971 cancel_delayed_work(&sdata->dfs_cac_timer_work);
2972
2973 if (sdata->wdev.cac_started) {
2974 ieee80211_vif_release_channel(sdata);
2975 sdata->wdev.cac_started = false;
2976 }
2977 }
2978 mutex_unlock(&local->mtx);
2979 }
2980
2981 static struct cfg80211_beacon_data *
2982 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2983 {
2984 struct cfg80211_beacon_data *new_beacon;
2985 u8 *pos;
2986 int len;
2987
2988 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2989 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2990 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len;
2991
2992 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2993 if (!new_beacon)
2994 return NULL;
2995
2996 pos = (u8 *)(new_beacon + 1);
2997 if (beacon->head_len) {
2998 new_beacon->head_len = beacon->head_len;
2999 new_beacon->head = pos;
3000 memcpy(pos, beacon->head, beacon->head_len);
3001 pos += beacon->head_len;
3002 }
3003 if (beacon->tail_len) {
3004 new_beacon->tail_len = beacon->tail_len;
3005 new_beacon->tail = pos;
3006 memcpy(pos, beacon->tail, beacon->tail_len);
3007 pos += beacon->tail_len;
3008 }
3009 if (beacon->beacon_ies_len) {
3010 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3011 new_beacon->beacon_ies = pos;
3012 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3013 pos += beacon->beacon_ies_len;
3014 }
3015 if (beacon->proberesp_ies_len) {
3016 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3017 new_beacon->proberesp_ies = pos;
3018 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3019 pos += beacon->proberesp_ies_len;
3020 }
3021 if (beacon->assocresp_ies_len) {
3022 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3023 new_beacon->assocresp_ies = pos;
3024 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3025 pos += beacon->assocresp_ies_len;
3026 }
3027 if (beacon->probe_resp_len) {
3028 new_beacon->probe_resp_len = beacon->probe_resp_len;
3029 new_beacon->probe_resp = pos;
3030 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3031 pos += beacon->probe_resp_len;
3032 }
3033
3034 /* might copy -1, meaning no changes requested */
3035 new_beacon->ftm_responder = beacon->ftm_responder;
3036 if (beacon->lci) {
3037 new_beacon->lci_len = beacon->lci_len;
3038 new_beacon->lci = pos;
3039 memcpy(pos, beacon->lci, beacon->lci_len);
3040 pos += beacon->lci_len;
3041 }
3042 if (beacon->civicloc) {
3043 new_beacon->civicloc_len = beacon->civicloc_len;
3044 new_beacon->civicloc = pos;
3045 memcpy(pos, beacon->civicloc, beacon->civicloc_len);
3046 pos += beacon->civicloc_len;
3047 }
3048
3049 return new_beacon;
3050 }
3051
3052 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3053 {
3054 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3055
3056 ieee80211_queue_work(&sdata->local->hw,
3057 &sdata->csa_finalize_work);
3058 }
3059 EXPORT_SYMBOL(ieee80211_csa_finish);
3060
3061 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3062 u32 *changed)
3063 {
3064 int err;
3065
3066 switch (sdata->vif.type) {
3067 case NL80211_IFTYPE_AP:
3068 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
3069 NULL);
3070 kfree(sdata->u.ap.next_beacon);
3071 sdata->u.ap.next_beacon = NULL;
3072
3073 if (err < 0)
3074 return err;
3075 *changed |= err;
3076 break;
3077 case NL80211_IFTYPE_ADHOC:
3078 err = ieee80211_ibss_finish_csa(sdata);
3079 if (err < 0)
3080 return err;
3081 *changed |= err;
3082 break;
3083 #ifdef CONFIG_MAC80211_MESH
3084 case NL80211_IFTYPE_MESH_POINT:
3085 err = ieee80211_mesh_finish_csa(sdata);
3086 if (err < 0)
3087 return err;
3088 *changed |= err;
3089 break;
3090 #endif
3091 default:
3092 WARN_ON(1);
3093 return -EINVAL;
3094 }
3095
3096 return 0;
3097 }
3098
3099 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3100 {
3101 struct ieee80211_local *local = sdata->local;
3102 u32 changed = 0;
3103 int err;
3104
3105 sdata_assert_lock(sdata);
3106 lockdep_assert_held(&local->mtx);
3107 lockdep_assert_held(&local->chanctx_mtx);
3108
3109 /*
3110 * using reservation isn't immediate as it may be deferred until later
3111 * with multi-vif. once reservation is complete it will re-schedule the
3112 * work with no reserved_chanctx so verify chandef to check if it
3113 * completed successfully
3114 */
3115
3116 if (sdata->reserved_chanctx) {
3117 /*
3118 * with multi-vif csa driver may call ieee80211_csa_finish()
3119 * many times while waiting for other interfaces to use their
3120 * reservations
3121 */
3122 if (sdata->reserved_ready)
3123 return 0;
3124
3125 return ieee80211_vif_use_reserved_context(sdata);
3126 }
3127
3128 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
3129 &sdata->csa_chandef))
3130 return -EINVAL;
3131
3132 sdata->vif.csa_active = false;
3133
3134 err = ieee80211_set_after_csa_beacon(sdata, &changed);
3135 if (err)
3136 return err;
3137
3138 ieee80211_bss_info_change_notify(sdata, changed);
3139
3140 if (sdata->csa_block_tx) {
3141 ieee80211_wake_vif_queues(local, sdata,
3142 IEEE80211_QUEUE_STOP_REASON_CSA);
3143 sdata->csa_block_tx = false;
3144 }
3145
3146 err = drv_post_channel_switch(sdata);
3147 if (err)
3148 return err;
3149
3150 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3151
3152 return 0;
3153 }
3154
3155 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3156 {
3157 if (__ieee80211_csa_finalize(sdata)) {
3158 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3159 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3160 GFP_KERNEL);
3161 }
3162 }
3163
3164 void ieee80211_csa_finalize_work(struct work_struct *work)
3165 {
3166 struct ieee80211_sub_if_data *sdata =
3167 container_of(work, struct ieee80211_sub_if_data,
3168 csa_finalize_work);
3169 struct ieee80211_local *local = sdata->local;
3170
3171 sdata_lock(sdata);
3172 mutex_lock(&local->mtx);
3173 mutex_lock(&local->chanctx_mtx);
3174
3175 /* AP might have been stopped while waiting for the lock. */
3176 if (!sdata->vif.csa_active)
3177 goto unlock;
3178
3179 if (!ieee80211_sdata_running(sdata))
3180 goto unlock;
3181
3182 ieee80211_csa_finalize(sdata);
3183
3184 unlock:
3185 mutex_unlock(&local->chanctx_mtx);
3186 mutex_unlock(&local->mtx);
3187 sdata_unlock(sdata);
3188 }
3189
3190 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3191 struct cfg80211_csa_settings *params,
3192 u32 *changed)
3193 {
3194 struct ieee80211_csa_settings csa = {};
3195 int err;
3196
3197 switch (sdata->vif.type) {
3198 case NL80211_IFTYPE_AP:
3199 sdata->u.ap.next_beacon =
3200 cfg80211_beacon_dup(&params->beacon_after);
3201 if (!sdata->u.ap.next_beacon)
3202 return -ENOMEM;
3203
3204 /*
3205 * With a count of 0, we don't have to wait for any
3206 * TBTT before switching, so complete the CSA
3207 * immediately. In theory, with a count == 1 we
3208 * should delay the switch until just before the next
3209 * TBTT, but that would complicate things so we switch
3210 * immediately too. If we would delay the switch
3211 * until the next TBTT, we would have to set the probe
3212 * response here.
3213 *
3214 * TODO: A channel switch with count <= 1 without
3215 * sending a CSA action frame is kind of useless,
3216 * because the clients won't know we're changing
3217 * channels. The action frame must be implemented
3218 * either here or in the userspace.
3219 */
3220 if (params->count <= 1)
3221 break;
3222
3223 if ((params->n_counter_offsets_beacon >
3224 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3225 (params->n_counter_offsets_presp >
3226 IEEE80211_MAX_CSA_COUNTERS_NUM))
3227 return -EINVAL;
3228
3229 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3230 csa.counter_offsets_presp = params->counter_offsets_presp;
3231 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3232 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3233 csa.count = params->count;
3234
3235 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3236 if (err < 0) {
3237 kfree(sdata->u.ap.next_beacon);
3238 return err;
3239 }
3240 *changed |= err;
3241
3242 break;
3243 case NL80211_IFTYPE_ADHOC:
3244 if (!sdata->vif.bss_conf.ibss_joined)
3245 return -EINVAL;
3246
3247 if (params->chandef.width != sdata->u.ibss.chandef.width)
3248 return -EINVAL;
3249
3250 switch (params->chandef.width) {
3251 case NL80211_CHAN_WIDTH_40:
3252 if (cfg80211_get_chandef_type(&params->chandef) !=
3253 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3254 return -EINVAL;
3255 case NL80211_CHAN_WIDTH_5:
3256 case NL80211_CHAN_WIDTH_10:
3257 case NL80211_CHAN_WIDTH_20_NOHT:
3258 case NL80211_CHAN_WIDTH_20:
3259 break;
3260 default:
3261 return -EINVAL;
3262 }
3263
3264 /* changes into another band are not supported */
3265 if (sdata->u.ibss.chandef.chan->band !=
3266 params->chandef.chan->band)
3267 return -EINVAL;
3268
3269 /* see comments in the NL80211_IFTYPE_AP block */
3270 if (params->count > 1) {
3271 err = ieee80211_ibss_csa_beacon(sdata, params);
3272 if (err < 0)
3273 return err;
3274 *changed |= err;
3275 }
3276
3277 ieee80211_send_action_csa(sdata, params);
3278
3279 break;
3280 #ifdef CONFIG_MAC80211_MESH
3281 case NL80211_IFTYPE_MESH_POINT: {
3282 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3283
3284 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3285 return -EINVAL;
3286
3287 /* changes into another band are not supported */
3288 if (sdata->vif.bss_conf.chandef.chan->band !=
3289 params->chandef.chan->band)
3290 return -EINVAL;
3291
3292 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3293 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3294 if (!ifmsh->pre_value)
3295 ifmsh->pre_value = 1;
3296 else
3297 ifmsh->pre_value++;
3298 }
3299
3300 /* see comments in the NL80211_IFTYPE_AP block */
3301 if (params->count > 1) {
3302 err = ieee80211_mesh_csa_beacon(sdata, params);
3303 if (err < 0) {
3304 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3305 return err;
3306 }
3307 *changed |= err;
3308 }
3309
3310 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3311 ieee80211_send_action_csa(sdata, params);
3312
3313 break;
3314 }
3315 #endif
3316 default:
3317 return -EOPNOTSUPP;
3318 }
3319
3320 return 0;
3321 }
3322
3323 static int
3324 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3325 struct cfg80211_csa_settings *params)
3326 {
3327 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3328 struct ieee80211_local *local = sdata->local;
3329 struct ieee80211_channel_switch ch_switch;
3330 struct ieee80211_chanctx_conf *conf;
3331 struct ieee80211_chanctx *chanctx;
3332 u32 changed = 0;
3333 int err;
3334
3335 sdata_assert_lock(sdata);
3336 lockdep_assert_held(&local->mtx);
3337
3338 if (!list_empty(&local->roc_list) || local->scanning)
3339 return -EBUSY;
3340
3341 if (sdata->wdev.cac_started)
3342 return -EBUSY;
3343
3344 if (cfg80211_chandef_identical(&params->chandef,
3345 &sdata->vif.bss_conf.chandef))
3346 return -EINVAL;
3347
3348 /* don't allow another channel switch if one is already active. */
3349 if (sdata->vif.csa_active)
3350 return -EBUSY;
3351
3352 mutex_lock(&local->chanctx_mtx);
3353 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3354 lockdep_is_held(&local->chanctx_mtx));
3355 if (!conf) {
3356 err = -EBUSY;
3357 goto out;
3358 }
3359
3360 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3361
3362 ch_switch.timestamp = 0;
3363 ch_switch.device_timestamp = 0;
3364 ch_switch.block_tx = params->block_tx;
3365 ch_switch.chandef = params->chandef;
3366 ch_switch.count = params->count;
3367
3368 err = drv_pre_channel_switch(sdata, &ch_switch);
3369 if (err)
3370 goto out;
3371
3372 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3373 chanctx->mode,
3374 params->radar_required);
3375 if (err)
3376 goto out;
3377
3378 /* if reservation is invalid then this will fail */
3379 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3380 if (err) {
3381 ieee80211_vif_unreserve_chanctx(sdata);
3382 goto out;
3383 }
3384
3385 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3386 if (err) {
3387 ieee80211_vif_unreserve_chanctx(sdata);
3388 goto out;
3389 }
3390
3391 sdata->csa_chandef = params->chandef;
3392 sdata->csa_block_tx = params->block_tx;
3393 sdata->vif.csa_active = true;
3394
3395 if (sdata->csa_block_tx)
3396 ieee80211_stop_vif_queues(local, sdata,
3397 IEEE80211_QUEUE_STOP_REASON_CSA);
3398
3399 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3400 params->count);
3401
3402 if (changed) {
3403 ieee80211_bss_info_change_notify(sdata, changed);
3404 drv_channel_switch_beacon(sdata, &params->chandef);
3405 } else {
3406 /* if the beacon didn't change, we can finalize immediately */
3407 ieee80211_csa_finalize(sdata);
3408 }
3409
3410 out:
3411 mutex_unlock(&local->chanctx_mtx);
3412 return err;
3413 }
3414
3415 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3416 struct cfg80211_csa_settings *params)
3417 {
3418 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3419 struct ieee80211_local *local = sdata->local;
3420 int err;
3421
3422 mutex_lock(&local->mtx);
3423 err = __ieee80211_channel_switch(wiphy, dev, params);
3424 mutex_unlock(&local->mtx);
3425
3426 return err;
3427 }
3428
3429 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3430 {
3431 lockdep_assert_held(&local->mtx);
3432
3433 local->roc_cookie_counter++;
3434
3435 /* wow, you wrapped 64 bits ... more likely a bug */
3436 if (WARN_ON(local->roc_cookie_counter == 0))
3437 local->roc_cookie_counter++;
3438
3439 return local->roc_cookie_counter;
3440 }
3441
3442 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3443 u64 *cookie, gfp_t gfp)
3444 {
3445 unsigned long spin_flags;
3446 struct sk_buff *ack_skb;
3447 int id;
3448
3449 ack_skb = skb_copy(skb, gfp);
3450 if (!ack_skb)
3451 return -ENOMEM;
3452
3453 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3454 id = idr_alloc(&local->ack_status_frames, ack_skb,
3455 1, 0x10000, GFP_ATOMIC);
3456 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3457
3458 if (id < 0) {
3459 kfree_skb(ack_skb);
3460 return -ENOMEM;
3461 }
3462
3463 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3464
3465 *cookie = ieee80211_mgmt_tx_cookie(local);
3466 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3467
3468 return 0;
3469 }
3470
3471 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3472 struct wireless_dev *wdev,
3473 u16 frame_type, bool reg)
3474 {
3475 struct ieee80211_local *local = wiphy_priv(wiphy);
3476 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3477
3478 switch (frame_type) {
3479 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3480 if (reg) {
3481 local->probe_req_reg++;
3482 sdata->vif.probe_req_reg++;
3483 } else {
3484 if (local->probe_req_reg)
3485 local->probe_req_reg--;
3486
3487 if (sdata->vif.probe_req_reg)
3488 sdata->vif.probe_req_reg--;
3489 }
3490
3491 if (!local->open_count)
3492 break;
3493
3494 if (sdata->vif.probe_req_reg == 1)
3495 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3496 FIF_PROBE_REQ);
3497 else if (sdata->vif.probe_req_reg == 0)
3498 drv_config_iface_filter(local, sdata, 0,
3499 FIF_PROBE_REQ);
3500
3501 ieee80211_configure_filter(local);
3502 break;
3503 default:
3504 break;
3505 }
3506 }
3507
3508 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3509 {
3510 struct ieee80211_local *local = wiphy_priv(wiphy);
3511
3512 if (local->started)
3513 return -EOPNOTSUPP;
3514
3515 return drv_set_antenna(local, tx_ant, rx_ant);
3516 }
3517
3518 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3519 {
3520 struct ieee80211_local *local = wiphy_priv(wiphy);
3521
3522 return drv_get_antenna(local, tx_ant, rx_ant);
3523 }
3524
3525 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3526 struct net_device *dev,
3527 struct cfg80211_gtk_rekey_data *data)
3528 {
3529 struct ieee80211_local *local = wiphy_priv(wiphy);
3530 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3531
3532 if (!local->ops->set_rekey_data)
3533 return -EOPNOTSUPP;
3534
3535 drv_set_rekey_data(local, sdata, data);
3536
3537 return 0;
3538 }
3539
3540 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3541 const u8 *peer, u64 *cookie)
3542 {
3543 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3544 struct ieee80211_local *local = sdata->local;
3545 struct ieee80211_qos_hdr *nullfunc;
3546 struct sk_buff *skb;
3547 int size = sizeof(*nullfunc);
3548 __le16 fc;
3549 bool qos;
3550 struct ieee80211_tx_info *info;
3551 struct sta_info *sta;
3552 struct ieee80211_chanctx_conf *chanctx_conf;
3553 enum nl80211_band band;
3554 int ret;
3555
3556 /* the lock is needed to assign the cookie later */
3557 mutex_lock(&local->mtx);
3558
3559 rcu_read_lock();
3560 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3561 if (WARN_ON(!chanctx_conf)) {
3562 ret = -EINVAL;
3563 goto unlock;
3564 }
3565 band = chanctx_conf->def.chan->band;
3566 sta = sta_info_get_bss(sdata, peer);
3567 if (sta) {
3568 qos = sta->sta.wme;
3569 } else {
3570 ret = -ENOLINK;
3571 goto unlock;
3572 }
3573
3574 if (qos) {
3575 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3576 IEEE80211_STYPE_QOS_NULLFUNC |
3577 IEEE80211_FCTL_FROMDS);
3578 } else {
3579 size -= 2;
3580 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3581 IEEE80211_STYPE_NULLFUNC |
3582 IEEE80211_FCTL_FROMDS);
3583 }
3584
3585 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3586 if (!skb) {
3587 ret = -ENOMEM;
3588 goto unlock;
3589 }
3590
3591 skb->dev = dev;
3592
3593 skb_reserve(skb, local->hw.extra_tx_headroom);
3594
3595 nullfunc = skb_put(skb, size);
3596 nullfunc->frame_control = fc;
3597 nullfunc->duration_id = 0;
3598 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3599 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3600 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3601 nullfunc->seq_ctrl = 0;
3602
3603 info = IEEE80211_SKB_CB(skb);
3604
3605 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3606 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3607 info->band = band;
3608
3609 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3610 skb->priority = 7;
3611 if (qos)
3612 nullfunc->qos_ctrl = cpu_to_le16(7);
3613
3614 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3615 if (ret) {
3616 kfree_skb(skb);
3617 goto unlock;
3618 }
3619
3620 local_bh_disable();
3621 ieee80211_xmit(sdata, sta, skb, 0);
3622 local_bh_enable();
3623
3624 ret = 0;
3625 unlock:
3626 rcu_read_unlock();
3627 mutex_unlock(&local->mtx);
3628
3629 return ret;
3630 }
3631
3632 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3633 struct wireless_dev *wdev,
3634 struct cfg80211_chan_def *chandef)
3635 {
3636 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3637 struct ieee80211_local *local = wiphy_priv(wiphy);
3638 struct ieee80211_chanctx_conf *chanctx_conf;
3639 int ret = -ENODATA;
3640
3641 rcu_read_lock();
3642 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3643 if (chanctx_conf) {
3644 *chandef = sdata->vif.bss_conf.chandef;
3645 ret = 0;
3646 } else if (local->open_count > 0 &&
3647 local->open_count == local->monitors &&
3648 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3649 if (local->use_chanctx)
3650 *chandef = local->monitor_chandef;
3651 else
3652 *chandef = local->_oper_chandef;
3653 ret = 0;
3654 }
3655 rcu_read_unlock();
3656
3657 return ret;
3658 }
3659
3660 #ifdef CONFIG_PM
3661 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3662 {
3663 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3664 }
3665 #endif
3666
3667 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3668 struct net_device *dev,
3669 struct cfg80211_qos_map *qos_map)
3670 {
3671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3672 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3673
3674 if (qos_map) {
3675 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3676 if (!new_qos_map)
3677 return -ENOMEM;
3678 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3679 } else {
3680 /* A NULL qos_map was passed to disable QoS mapping */
3681 new_qos_map = NULL;
3682 }
3683
3684 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3685 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3686 if (old_qos_map)
3687 kfree_rcu(old_qos_map, rcu_head);
3688
3689 return 0;
3690 }
3691
3692 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3693 struct net_device *dev,
3694 struct cfg80211_chan_def *chandef)
3695 {
3696 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3697 int ret;
3698 u32 changed = 0;
3699
3700 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3701 if (ret == 0)
3702 ieee80211_bss_info_change_notify(sdata, changed);
3703
3704 return ret;
3705 }
3706
3707 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3708 u8 tsid, const u8 *peer, u8 up,
3709 u16 admitted_time)
3710 {
3711 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3712 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3713 int ac = ieee802_1d_to_ac[up];
3714
3715 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3716 return -EOPNOTSUPP;
3717
3718 if (!(sdata->wmm_acm & BIT(up)))
3719 return -EINVAL;
3720
3721 if (ifmgd->tx_tspec[ac].admitted_time)
3722 return -EBUSY;
3723
3724 if (admitted_time) {
3725 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3726 ifmgd->tx_tspec[ac].tsid = tsid;
3727 ifmgd->tx_tspec[ac].up = up;
3728 }
3729
3730 return 0;
3731 }
3732
3733 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3734 u8 tsid, const u8 *peer)
3735 {
3736 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3737 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3738 struct ieee80211_local *local = wiphy_priv(wiphy);
3739 int ac;
3740
3741 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3742 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3743
3744 /* skip unused entries */
3745 if (!tx_tspec->admitted_time)
3746 continue;
3747
3748 if (tx_tspec->tsid != tsid)
3749 continue;
3750
3751 /* due to this new packets will be reassigned to non-ACM ACs */
3752 tx_tspec->up = -1;
3753
3754 /* Make sure that all packets have been sent to avoid to
3755 * restore the QoS params on packets that are still on the
3756 * queues.
3757 */
3758 synchronize_net();
3759 ieee80211_flush_queues(local, sdata, false);
3760
3761 /* restore the normal QoS parameters
3762 * (unconditionally to avoid races)
3763 */
3764 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3765 tx_tspec->downgraded = false;
3766 ieee80211_sta_handle_tspec_ac_params(sdata);
3767
3768 /* finally clear all the data */
3769 memset(tx_tspec, 0, sizeof(*tx_tspec));
3770
3771 return 0;
3772 }
3773
3774 return -ENOENT;
3775 }
3776
3777 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3778 u8 inst_id,
3779 enum nl80211_nan_func_term_reason reason,
3780 gfp_t gfp)
3781 {
3782 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3783 struct cfg80211_nan_func *func;
3784 u64 cookie;
3785
3786 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3787 return;
3788
3789 spin_lock_bh(&sdata->u.nan.func_lock);
3790
3791 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3792 if (WARN_ON(!func)) {
3793 spin_unlock_bh(&sdata->u.nan.func_lock);
3794 return;
3795 }
3796
3797 cookie = func->cookie;
3798 idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3799
3800 spin_unlock_bh(&sdata->u.nan.func_lock);
3801
3802 cfg80211_free_nan_func(func);
3803
3804 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3805 reason, cookie, gfp);
3806 }
3807 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3808
3809 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3810 struct cfg80211_nan_match_params *match,
3811 gfp_t gfp)
3812 {
3813 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3814 struct cfg80211_nan_func *func;
3815
3816 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3817 return;
3818
3819 spin_lock_bh(&sdata->u.nan.func_lock);
3820
3821 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id);
3822 if (WARN_ON(!func)) {
3823 spin_unlock_bh(&sdata->u.nan.func_lock);
3824 return;
3825 }
3826 match->cookie = func->cookie;
3827
3828 spin_unlock_bh(&sdata->u.nan.func_lock);
3829
3830 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3831 }
3832 EXPORT_SYMBOL(ieee80211_nan_func_match);
3833
3834 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3835 struct net_device *dev,
3836 const bool enabled)
3837 {
3838 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3839
3840 sdata->u.ap.multicast_to_unicast = enabled;
3841
3842 return 0;
3843 }
3844
3845 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3846 struct txq_info *txqi)
3847 {
3848 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3849 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3850 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3851 }
3852
3853 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3854 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3855 txqstats->backlog_packets = txqi->tin.backlog_packets;
3856 }
3857
3858 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3859 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3860 txqstats->flows = txqi->tin.flows;
3861 }
3862
3863 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3864 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3865 txqstats->drops = txqi->cstats.drop_count;
3866 }
3867
3868 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3869 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3870 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3871 }
3872
3873 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3874 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3875 txqstats->overlimit = txqi->tin.overlimit;
3876 }
3877
3878 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3879 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3880 txqstats->collisions = txqi->tin.collisions;
3881 }
3882
3883 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3884 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3885 txqstats->tx_bytes = txqi->tin.tx_bytes;
3886 }
3887
3888 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3889 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3890 txqstats->tx_packets = txqi->tin.tx_packets;
3891 }
3892 }
3893
3894 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3895 struct wireless_dev *wdev,
3896 struct cfg80211_txq_stats *txqstats)
3897 {
3898 struct ieee80211_local *local = wiphy_priv(wiphy);
3899 struct ieee80211_sub_if_data *sdata;
3900 int ret = 0;
3901
3902 if (!local->ops->wake_tx_queue)
3903 return 1;
3904
3905 spin_lock_bh(&local->fq.lock);
3906 rcu_read_lock();
3907
3908 if (wdev) {
3909 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3910 if (!sdata->vif.txq) {
3911 ret = 1;
3912 goto out;
3913 }
3914 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3915 } else {
3916 /* phy stats */
3917 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3918 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3919 BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3920 BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3921 BIT(NL80211_TXQ_STATS_COLLISIONS) |
3922 BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3923 txqstats->backlog_packets = local->fq.backlog;
3924 txqstats->backlog_bytes = local->fq.memory_usage;
3925 txqstats->overlimit = local->fq.overlimit;
3926 txqstats->overmemory = local->fq.overmemory;
3927 txqstats->collisions = local->fq.collisions;
3928 txqstats->max_flows = local->fq.flows_cnt;
3929 }
3930
3931 out:
3932 rcu_read_unlock();
3933 spin_unlock_bh(&local->fq.lock);
3934
3935 return ret;
3936 }
3937
3938 static int
3939 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy,
3940 struct net_device *dev,
3941 struct cfg80211_ftm_responder_stats *ftm_stats)
3942 {
3943 struct ieee80211_local *local = wiphy_priv(wiphy);
3944 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3945
3946 return drv_get_ftm_responder_stats(local, sdata, ftm_stats);
3947 }
3948
3949 static int
3950 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3951 struct cfg80211_pmsr_request *request)
3952 {
3953 struct ieee80211_local *local = wiphy_priv(wiphy);
3954 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3955
3956 return drv_start_pmsr(local, sdata, request);
3957 }
3958
3959 static void
3960 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev,
3961 struct cfg80211_pmsr_request *request)
3962 {
3963 struct ieee80211_local *local = wiphy_priv(wiphy);
3964 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev);
3965
3966 return drv_abort_pmsr(local, sdata, request);
3967 }
3968
3969 const struct cfg80211_ops mac80211_config_ops = {
3970 .add_virtual_intf = ieee80211_add_iface,
3971 .del_virtual_intf = ieee80211_del_iface,
3972 .change_virtual_intf = ieee80211_change_iface,
3973 .start_p2p_device = ieee80211_start_p2p_device,
3974 .stop_p2p_device = ieee80211_stop_p2p_device,
3975 .add_key = ieee80211_add_key,
3976 .del_key = ieee80211_del_key,
3977 .get_key = ieee80211_get_key,
3978 .set_default_key = ieee80211_config_default_key,
3979 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3980 .start_ap = ieee80211_start_ap,
3981 .change_beacon = ieee80211_change_beacon,
3982 .stop_ap = ieee80211_stop_ap,
3983 .add_station = ieee80211_add_station,
3984 .del_station = ieee80211_del_station,
3985 .change_station = ieee80211_change_station,
3986 .get_station = ieee80211_get_station,
3987 .dump_station = ieee80211_dump_station,
3988 .dump_survey = ieee80211_dump_survey,
3989 #ifdef CONFIG_MAC80211_MESH
3990 .add_mpath = ieee80211_add_mpath,
3991 .del_mpath = ieee80211_del_mpath,
3992 .change_mpath = ieee80211_change_mpath,
3993 .get_mpath = ieee80211_get_mpath,
3994 .dump_mpath = ieee80211_dump_mpath,
3995 .get_mpp = ieee80211_get_mpp,
3996 .dump_mpp = ieee80211_dump_mpp,
3997 .update_mesh_config = ieee80211_update_mesh_config,
3998 .get_mesh_config = ieee80211_get_mesh_config,
3999 .join_mesh = ieee80211_join_mesh,
4000 .leave_mesh = ieee80211_leave_mesh,
4001 #endif
4002 .join_ocb = ieee80211_join_ocb,
4003 .leave_ocb = ieee80211_leave_ocb,
4004 .change_bss = ieee80211_change_bss,
4005 .set_txq_params = ieee80211_set_txq_params,
4006 .set_monitor_channel = ieee80211_set_monitor_channel,
4007 .suspend = ieee80211_suspend,
4008 .resume = ieee80211_resume,
4009 .scan = ieee80211_scan,
4010 .abort_scan = ieee80211_abort_scan,
4011 .sched_scan_start = ieee80211_sched_scan_start,
4012 .sched_scan_stop = ieee80211_sched_scan_stop,
4013 .auth = ieee80211_auth,
4014 .assoc = ieee80211_assoc,
4015 .deauth = ieee80211_deauth,
4016 .disassoc = ieee80211_disassoc,
4017 .join_ibss = ieee80211_join_ibss,
4018 .leave_ibss = ieee80211_leave_ibss,
4019 .set_mcast_rate = ieee80211_set_mcast_rate,
4020 .set_wiphy_params = ieee80211_set_wiphy_params,
4021 .set_tx_power = ieee80211_set_tx_power,
4022 .get_tx_power = ieee80211_get_tx_power,
4023 .set_wds_peer = ieee80211_set_wds_peer,
4024 .rfkill_poll = ieee80211_rfkill_poll,
4025 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
4026 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
4027 .set_power_mgmt = ieee80211_set_power_mgmt,
4028 .set_bitrate_mask = ieee80211_set_bitrate_mask,
4029 .remain_on_channel = ieee80211_remain_on_channel,
4030 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
4031 .mgmt_tx = ieee80211_mgmt_tx,
4032 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
4033 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
4034 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
4035 .mgmt_frame_register = ieee80211_mgmt_frame_register,
4036 .set_antenna = ieee80211_set_antenna,
4037 .get_antenna = ieee80211_get_antenna,
4038 .set_rekey_data = ieee80211_set_rekey_data,
4039 .tdls_oper = ieee80211_tdls_oper,
4040 .tdls_mgmt = ieee80211_tdls_mgmt,
4041 .tdls_channel_switch = ieee80211_tdls_channel_switch,
4042 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
4043 .probe_client = ieee80211_probe_client,
4044 .set_noack_map = ieee80211_set_noack_map,
4045 #ifdef CONFIG_PM
4046 .set_wakeup = ieee80211_set_wakeup,
4047 #endif
4048 .get_channel = ieee80211_cfg_get_channel,
4049 .start_radar_detection = ieee80211_start_radar_detection,
4050 .end_cac = ieee80211_end_cac,
4051 .channel_switch = ieee80211_channel_switch,
4052 .set_qos_map = ieee80211_set_qos_map,
4053 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
4054 .add_tx_ts = ieee80211_add_tx_ts,
4055 .del_tx_ts = ieee80211_del_tx_ts,
4056 .start_nan = ieee80211_start_nan,
4057 .stop_nan = ieee80211_stop_nan,
4058 .nan_change_conf = ieee80211_nan_change_conf,
4059 .add_nan_func = ieee80211_add_nan_func,
4060 .del_nan_func = ieee80211_del_nan_func,
4061 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
4062 .tx_control_port = ieee80211_tx_control_port,
4063 .get_txq_stats = ieee80211_get_txq_stats,
4064 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats,
4065 .start_pmsr = ieee80211_start_pmsr,
4066 .abort_pmsr = ieee80211_abort_pmsr,
4067 .probe_mesh_link = ieee80211_probe_mesh_link,
4068 };
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