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Merge branches 's390', 'arm/renesas', 'arm/msm', 'arm/shmobile', 'arm/smmu', 'x86...
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 const char *name,
26 unsigned char name_assign_type,
27 enum nl80211_iftype type,
28 u32 *flags,
29 struct vif_params *params)
30 {
31 struct ieee80211_local *local = wiphy_priv(wiphy);
32 struct wireless_dev *wdev;
33 struct ieee80211_sub_if_data *sdata;
34 int err;
35
36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 if (err)
38 return ERR_PTR(err);
39
40 if (type == NL80211_IFTYPE_MONITOR && flags) {
41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 sdata->u.mntr_flags = *flags;
43 }
44
45 return wdev;
46 }
47
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51
52 return 0;
53 }
54
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 struct net_device *dev,
57 enum nl80211_iftype type, u32 *flags,
58 struct vif_params *params)
59 {
60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 int ret;
62
63 ret = ieee80211_if_change_type(sdata, type);
64 if (ret)
65 return ret;
66
67 if (type == NL80211_IFTYPE_AP_VLAN &&
68 params && params->use_4addr == 0)
69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 else if (type == NL80211_IFTYPE_STATION &&
71 params && params->use_4addr >= 0)
72 sdata->u.mgd.use_4addr = params->use_4addr;
73
74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
75 struct ieee80211_local *local = sdata->local;
76
77 if (ieee80211_sdata_running(sdata)) {
78 u32 mask = MONITOR_FLAG_COOK_FRAMES |
79 MONITOR_FLAG_ACTIVE;
80
81 /*
82 * Prohibit MONITOR_FLAG_COOK_FRAMES and
83 * MONITOR_FLAG_ACTIVE to be changed while the
84 * interface is up.
85 * Else we would need to add a lot of cruft
86 * to update everything:
87 * cooked_mntrs, monitor and all fif_* counters
88 * reconfigure hardware
89 */
90 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
91 return -EBUSY;
92
93 ieee80211_adjust_monitor_flags(sdata, -1);
94 sdata->u.mntr_flags = *flags;
95 ieee80211_adjust_monitor_flags(sdata, 1);
96
97 ieee80211_configure_filter(local);
98 } else {
99 /*
100 * Because the interface is down, ieee80211_do_stop
101 * and ieee80211_do_open take care of "everything"
102 * mentioned in the comment above.
103 */
104 sdata->u.mntr_flags = *flags;
105 }
106 }
107
108 return 0;
109 }
110
111 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
112 struct wireless_dev *wdev)
113 {
114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
115 int ret;
116
117 mutex_lock(&sdata->local->chanctx_mtx);
118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
119 mutex_unlock(&sdata->local->chanctx_mtx);
120 if (ret < 0)
121 return ret;
122
123 return ieee80211_do_open(wdev, true);
124 }
125
126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
127 struct wireless_dev *wdev)
128 {
129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
130 }
131
132 static int ieee80211_set_noack_map(struct wiphy *wiphy,
133 struct net_device *dev,
134 u16 noack_map)
135 {
136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
137
138 sdata->noack_map = noack_map;
139
140 ieee80211_check_fast_xmit_iface(sdata);
141
142 return 0;
143 }
144
145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
146 u8 key_idx, bool pairwise, const u8 *mac_addr,
147 struct key_params *params)
148 {
149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
150 struct ieee80211_local *local = sdata->local;
151 struct sta_info *sta = NULL;
152 const struct ieee80211_cipher_scheme *cs = NULL;
153 struct ieee80211_key *key;
154 int err;
155
156 if (!ieee80211_sdata_running(sdata))
157 return -ENETDOWN;
158
159 /* reject WEP and TKIP keys if WEP failed to initialize */
160 switch (params->cipher) {
161 case WLAN_CIPHER_SUITE_WEP40:
162 case WLAN_CIPHER_SUITE_TKIP:
163 case WLAN_CIPHER_SUITE_WEP104:
164 if (IS_ERR(local->wep_tx_tfm))
165 return -EINVAL;
166 break;
167 case WLAN_CIPHER_SUITE_CCMP:
168 case WLAN_CIPHER_SUITE_CCMP_256:
169 case WLAN_CIPHER_SUITE_AES_CMAC:
170 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
171 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
173 case WLAN_CIPHER_SUITE_GCMP:
174 case WLAN_CIPHER_SUITE_GCMP_256:
175 break;
176 default:
177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
178 break;
179 }
180
181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
182 params->key, params->seq_len, params->seq,
183 cs);
184 if (IS_ERR(key))
185 return PTR_ERR(key);
186
187 if (pairwise)
188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
189
190 mutex_lock(&local->sta_mtx);
191
192 if (mac_addr) {
193 if (ieee80211_vif_is_mesh(&sdata->vif))
194 sta = sta_info_get(sdata, mac_addr);
195 else
196 sta = sta_info_get_bss(sdata, mac_addr);
197 /*
198 * The ASSOC test makes sure the driver is ready to
199 * receive the key. When wpa_supplicant has roamed
200 * using FT, it attempts to set the key before
201 * association has completed, this rejects that attempt
202 * so it will set the key again after association.
203 *
204 * TODO: accept the key if we have a station entry and
205 * add it to the device after the station.
206 */
207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
208 ieee80211_key_free_unused(key);
209 err = -ENOENT;
210 goto out_unlock;
211 }
212 }
213
214 switch (sdata->vif.type) {
215 case NL80211_IFTYPE_STATION:
216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
218 break;
219 case NL80211_IFTYPE_AP:
220 case NL80211_IFTYPE_AP_VLAN:
221 /* Keys without a station are used for TX only */
222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
224 break;
225 case NL80211_IFTYPE_ADHOC:
226 /* no MFP (yet) */
227 break;
228 case NL80211_IFTYPE_MESH_POINT:
229 #ifdef CONFIG_MAC80211_MESH
230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
232 break;
233 #endif
234 case NL80211_IFTYPE_WDS:
235 case NL80211_IFTYPE_MONITOR:
236 case NL80211_IFTYPE_P2P_DEVICE:
237 case NL80211_IFTYPE_UNSPECIFIED:
238 case NUM_NL80211_IFTYPES:
239 case NL80211_IFTYPE_P2P_CLIENT:
240 case NL80211_IFTYPE_P2P_GO:
241 case NL80211_IFTYPE_OCB:
242 /* shouldn't happen */
243 WARN_ON_ONCE(1);
244 break;
245 }
246
247 if (sta)
248 sta->cipher_scheme = cs;
249
250 err = ieee80211_key_link(key, sdata, sta);
251
252 out_unlock:
253 mutex_unlock(&local->sta_mtx);
254
255 return err;
256 }
257
258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
259 u8 key_idx, bool pairwise, const u8 *mac_addr)
260 {
261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
262 struct ieee80211_local *local = sdata->local;
263 struct sta_info *sta;
264 struct ieee80211_key *key = NULL;
265 int ret;
266
267 mutex_lock(&local->sta_mtx);
268 mutex_lock(&local->key_mtx);
269
270 if (mac_addr) {
271 ret = -ENOENT;
272
273 sta = sta_info_get_bss(sdata, mac_addr);
274 if (!sta)
275 goto out_unlock;
276
277 if (pairwise)
278 key = key_mtx_dereference(local, sta->ptk[key_idx]);
279 else
280 key = key_mtx_dereference(local, sta->gtk[key_idx]);
281 } else
282 key = key_mtx_dereference(local, sdata->keys[key_idx]);
283
284 if (!key) {
285 ret = -ENOENT;
286 goto out_unlock;
287 }
288
289 ieee80211_key_free(key, true);
290
291 ret = 0;
292 out_unlock:
293 mutex_unlock(&local->key_mtx);
294 mutex_unlock(&local->sta_mtx);
295
296 return ret;
297 }
298
299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
300 u8 key_idx, bool pairwise, const u8 *mac_addr,
301 void *cookie,
302 void (*callback)(void *cookie,
303 struct key_params *params))
304 {
305 struct ieee80211_sub_if_data *sdata;
306 struct sta_info *sta = NULL;
307 u8 seq[6] = {0};
308 struct key_params params;
309 struct ieee80211_key *key = NULL;
310 u64 pn64;
311 u32 iv32;
312 u16 iv16;
313 int err = -ENOENT;
314 struct ieee80211_key_seq kseq = {};
315
316 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
317
318 rcu_read_lock();
319
320 if (mac_addr) {
321 sta = sta_info_get_bss(sdata, mac_addr);
322 if (!sta)
323 goto out;
324
325 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
326 key = rcu_dereference(sta->ptk[key_idx]);
327 else if (!pairwise &&
328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
329 key = rcu_dereference(sta->gtk[key_idx]);
330 } else
331 key = rcu_dereference(sdata->keys[key_idx]);
332
333 if (!key)
334 goto out;
335
336 memset(&params, 0, sizeof(params));
337
338 params.cipher = key->conf.cipher;
339
340 switch (key->conf.cipher) {
341 case WLAN_CIPHER_SUITE_TKIP:
342 iv32 = key->u.tkip.tx.iv32;
343 iv16 = key->u.tkip.tx.iv16;
344
345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
347 drv_get_key_seq(sdata->local, key, &kseq);
348 iv32 = kseq.tkip.iv32;
349 iv16 = kseq.tkip.iv16;
350 }
351
352 seq[0] = iv16 & 0xff;
353 seq[1] = (iv16 >> 8) & 0xff;
354 seq[2] = iv32 & 0xff;
355 seq[3] = (iv32 >> 8) & 0xff;
356 seq[4] = (iv32 >> 16) & 0xff;
357 seq[5] = (iv32 >> 24) & 0xff;
358 params.seq = seq;
359 params.seq_len = 6;
360 break;
361 case WLAN_CIPHER_SUITE_CCMP:
362 case WLAN_CIPHER_SUITE_CCMP_256:
363 case WLAN_CIPHER_SUITE_AES_CMAC:
364 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
366 offsetof(typeof(kseq), aes_cmac));
367 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
368 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
370 offsetof(typeof(kseq), aes_gmac));
371 case WLAN_CIPHER_SUITE_GCMP:
372 case WLAN_CIPHER_SUITE_GCMP_256:
373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
374 offsetof(typeof(kseq), gcmp));
375
376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
378 drv_get_key_seq(sdata->local, key, &kseq);
379 memcpy(seq, kseq.ccmp.pn, 6);
380 } else {
381 pn64 = atomic64_read(&key->conf.tx_pn);
382 seq[0] = pn64;
383 seq[1] = pn64 >> 8;
384 seq[2] = pn64 >> 16;
385 seq[3] = pn64 >> 24;
386 seq[4] = pn64 >> 32;
387 seq[5] = pn64 >> 40;
388 }
389 params.seq = seq;
390 params.seq_len = 6;
391 break;
392 default:
393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
394 break;
395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
396 break;
397 drv_get_key_seq(sdata->local, key, &kseq);
398 params.seq = kseq.hw.seq;
399 params.seq_len = kseq.hw.seq_len;
400 break;
401 }
402
403 params.key = key->conf.key;
404 params.key_len = key->conf.keylen;
405
406 callback(cookie, &params);
407 err = 0;
408
409 out:
410 rcu_read_unlock();
411 return err;
412 }
413
414 static int ieee80211_config_default_key(struct wiphy *wiphy,
415 struct net_device *dev,
416 u8 key_idx, bool uni,
417 bool multi)
418 {
419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
420
421 ieee80211_set_default_key(sdata, key_idx, uni, multi);
422
423 return 0;
424 }
425
426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
427 struct net_device *dev,
428 u8 key_idx)
429 {
430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
431
432 ieee80211_set_default_mgmt_key(sdata, key_idx);
433
434 return 0;
435 }
436
437 void sta_set_rate_info_tx(struct sta_info *sta,
438 const struct ieee80211_tx_rate *rate,
439 struct rate_info *rinfo)
440 {
441 rinfo->flags = 0;
442 if (rate->flags & IEEE80211_TX_RC_MCS) {
443 rinfo->flags |= RATE_INFO_FLAGS_MCS;
444 rinfo->mcs = rate->idx;
445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
448 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
449 } else {
450 struct ieee80211_supported_band *sband;
451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
452 u16 brate;
453
454 sband = sta->local->hw.wiphy->bands[
455 ieee80211_get_sdata_band(sta->sdata)];
456 brate = sband->bitrates[rate->idx].bitrate;
457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
458 }
459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
460 rinfo->bw = RATE_INFO_BW_40;
461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
462 rinfo->bw = RATE_INFO_BW_80;
463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
464 rinfo->bw = RATE_INFO_BW_160;
465 else
466 rinfo->bw = RATE_INFO_BW_20;
467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
469 }
470
471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
472 int idx, u8 *mac, struct station_info *sinfo)
473 {
474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
475 struct ieee80211_local *local = sdata->local;
476 struct sta_info *sta;
477 int ret = -ENOENT;
478
479 mutex_lock(&local->sta_mtx);
480
481 sta = sta_info_get_by_idx(sdata, idx);
482 if (sta) {
483 ret = 0;
484 memcpy(mac, sta->sta.addr, ETH_ALEN);
485 sta_set_sinfo(sta, sinfo);
486 }
487
488 mutex_unlock(&local->sta_mtx);
489
490 return ret;
491 }
492
493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
494 int idx, struct survey_info *survey)
495 {
496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
497
498 return drv_get_survey(local, idx, survey);
499 }
500
501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
502 const u8 *mac, struct station_info *sinfo)
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 int ret = -ENOENT;
508
509 mutex_lock(&local->sta_mtx);
510
511 sta = sta_info_get_bss(sdata, mac);
512 if (sta) {
513 ret = 0;
514 sta_set_sinfo(sta, sinfo);
515 }
516
517 mutex_unlock(&local->sta_mtx);
518
519 return ret;
520 }
521
522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
523 struct cfg80211_chan_def *chandef)
524 {
525 struct ieee80211_local *local = wiphy_priv(wiphy);
526 struct ieee80211_sub_if_data *sdata;
527 int ret = 0;
528
529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
530 return 0;
531
532 mutex_lock(&local->mtx);
533 mutex_lock(&local->iflist_mtx);
534 if (local->use_chanctx) {
535 sdata = rcu_dereference_protected(
536 local->monitor_sdata,
537 lockdep_is_held(&local->iflist_mtx));
538 if (sdata) {
539 ieee80211_vif_release_channel(sdata);
540 ret = ieee80211_vif_use_channel(sdata, chandef,
541 IEEE80211_CHANCTX_EXCLUSIVE);
542 }
543 } else if (local->open_count == local->monitors) {
544 local->_oper_chandef = *chandef;
545 ieee80211_hw_config(local, 0);
546 }
547
548 if (ret == 0)
549 local->monitor_chandef = *chandef;
550 mutex_unlock(&local->iflist_mtx);
551 mutex_unlock(&local->mtx);
552
553 return ret;
554 }
555
556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
557 const u8 *resp, size_t resp_len,
558 const struct ieee80211_csa_settings *csa)
559 {
560 struct probe_resp *new, *old;
561
562 if (!resp || !resp_len)
563 return 1;
564
565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
566
567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
568 if (!new)
569 return -ENOMEM;
570
571 new->len = resp_len;
572 memcpy(new->data, resp, resp_len);
573
574 if (csa)
575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
576 csa->n_counter_offsets_presp *
577 sizeof(new->csa_counter_offsets[0]));
578
579 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
580 if (old)
581 kfree_rcu(old, rcu_head);
582
583 return 0;
584 }
585
586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
587 struct cfg80211_beacon_data *params,
588 const struct ieee80211_csa_settings *csa)
589 {
590 struct beacon_data *new, *old;
591 int new_head_len, new_tail_len;
592 int size, err;
593 u32 changed = BSS_CHANGED_BEACON;
594
595 old = sdata_dereference(sdata->u.ap.beacon, sdata);
596
597
598 /* Need to have a beacon head if we don't have one yet */
599 if (!params->head && !old)
600 return -EINVAL;
601
602 /* new or old head? */
603 if (params->head)
604 new_head_len = params->head_len;
605 else
606 new_head_len = old->head_len;
607
608 /* new or old tail? */
609 if (params->tail || !old)
610 /* params->tail_len will be zero for !params->tail */
611 new_tail_len = params->tail_len;
612 else
613 new_tail_len = old->tail_len;
614
615 size = sizeof(*new) + new_head_len + new_tail_len;
616
617 new = kzalloc(size, GFP_KERNEL);
618 if (!new)
619 return -ENOMEM;
620
621 /* start filling the new info now */
622
623 /*
624 * pointers go into the block we allocated,
625 * memory is | beacon_data | head | tail |
626 */
627 new->head = ((u8 *) new) + sizeof(*new);
628 new->tail = new->head + new_head_len;
629 new->head_len = new_head_len;
630 new->tail_len = new_tail_len;
631
632 if (csa) {
633 new->csa_current_counter = csa->count;
634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
635 csa->n_counter_offsets_beacon *
636 sizeof(new->csa_counter_offsets[0]));
637 }
638
639 /* copy in head */
640 if (params->head)
641 memcpy(new->head, params->head, new_head_len);
642 else
643 memcpy(new->head, old->head, new_head_len);
644
645 /* copy in optional tail */
646 if (params->tail)
647 memcpy(new->tail, params->tail, new_tail_len);
648 else
649 if (old)
650 memcpy(new->tail, old->tail, new_tail_len);
651
652 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
653 params->probe_resp_len, csa);
654 if (err < 0)
655 return err;
656 if (err == 0)
657 changed |= BSS_CHANGED_AP_PROBE_RESP;
658
659 rcu_assign_pointer(sdata->u.ap.beacon, new);
660
661 if (old)
662 kfree_rcu(old, rcu_head);
663
664 return changed;
665 }
666
667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
668 struct cfg80211_ap_settings *params)
669 {
670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
671 struct ieee80211_local *local = sdata->local;
672 struct beacon_data *old;
673 struct ieee80211_sub_if_data *vlan;
674 u32 changed = BSS_CHANGED_BEACON_INT |
675 BSS_CHANGED_BEACON_ENABLED |
676 BSS_CHANGED_BEACON |
677 BSS_CHANGED_SSID |
678 BSS_CHANGED_P2P_PS |
679 BSS_CHANGED_TXPOWER;
680 int err;
681
682 old = sdata_dereference(sdata->u.ap.beacon, sdata);
683 if (old)
684 return -EALREADY;
685
686 switch (params->smps_mode) {
687 case NL80211_SMPS_OFF:
688 sdata->smps_mode = IEEE80211_SMPS_OFF;
689 break;
690 case NL80211_SMPS_STATIC:
691 sdata->smps_mode = IEEE80211_SMPS_STATIC;
692 break;
693 case NL80211_SMPS_DYNAMIC:
694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
695 break;
696 default:
697 return -EINVAL;
698 }
699 sdata->needed_rx_chains = sdata->local->rx_chains;
700
701 mutex_lock(&local->mtx);
702 err = ieee80211_vif_use_channel(sdata, &params->chandef,
703 IEEE80211_CHANCTX_SHARED);
704 if (!err)
705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
706 mutex_unlock(&local->mtx);
707 if (err)
708 return err;
709
710 /*
711 * Apply control port protocol, this allows us to
712 * not encrypt dynamic WEP control frames.
713 */
714 sdata->control_port_protocol = params->crypto.control_port_ethertype;
715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
717 &params->crypto,
718 sdata->vif.type);
719
720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
721 vlan->control_port_protocol =
722 params->crypto.control_port_ethertype;
723 vlan->control_port_no_encrypt =
724 params->crypto.control_port_no_encrypt;
725 vlan->encrypt_headroom =
726 ieee80211_cs_headroom(sdata->local,
727 &params->crypto,
728 vlan->vif.type);
729 }
730
731 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
732 sdata->vif.bss_conf.dtim_period = params->dtim_period;
733 sdata->vif.bss_conf.enable_beacon = true;
734
735 sdata->vif.bss_conf.ssid_len = params->ssid_len;
736 if (params->ssid_len)
737 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
738 params->ssid_len);
739 sdata->vif.bss_conf.hidden_ssid =
740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
741
742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
743 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
746 if (params->p2p_opp_ps)
747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
748 IEEE80211_P2P_OPPPS_ENABLE_BIT;
749
750 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
751 if (err < 0) {
752 ieee80211_vif_release_channel(sdata);
753 return err;
754 }
755 changed |= err;
756
757 err = drv_start_ap(sdata->local, sdata);
758 if (err) {
759 old = sdata_dereference(sdata->u.ap.beacon, sdata);
760
761 if (old)
762 kfree_rcu(old, rcu_head);
763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
764 ieee80211_vif_release_channel(sdata);
765 return err;
766 }
767
768 ieee80211_recalc_dtim(local, sdata);
769 ieee80211_bss_info_change_notify(sdata, changed);
770
771 netif_carrier_on(dev);
772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
773 netif_carrier_on(vlan->dev);
774
775 return 0;
776 }
777
778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
779 struct cfg80211_beacon_data *params)
780 {
781 struct ieee80211_sub_if_data *sdata;
782 struct beacon_data *old;
783 int err;
784
785 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 sdata_assert_lock(sdata);
787
788 /* don't allow changing the beacon while CSA is in place - offset
789 * of channel switch counter may change
790 */
791 if (sdata->vif.csa_active)
792 return -EBUSY;
793
794 old = sdata_dereference(sdata->u.ap.beacon, sdata);
795 if (!old)
796 return -ENOENT;
797
798 err = ieee80211_assign_beacon(sdata, params, NULL);
799 if (err < 0)
800 return err;
801 ieee80211_bss_info_change_notify(sdata, err);
802 return 0;
803 }
804
805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
806 {
807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
808 struct ieee80211_sub_if_data *vlan;
809 struct ieee80211_local *local = sdata->local;
810 struct beacon_data *old_beacon;
811 struct probe_resp *old_probe_resp;
812 struct cfg80211_chan_def chandef;
813
814 sdata_assert_lock(sdata);
815
816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
817 if (!old_beacon)
818 return -ENOENT;
819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
820
821 /* abort any running channel switch */
822 mutex_lock(&local->mtx);
823 sdata->vif.csa_active = false;
824 if (sdata->csa_block_tx) {
825 ieee80211_wake_vif_queues(local, sdata,
826 IEEE80211_QUEUE_STOP_REASON_CSA);
827 sdata->csa_block_tx = false;
828 }
829
830 mutex_unlock(&local->mtx);
831
832 kfree(sdata->u.ap.next_beacon);
833 sdata->u.ap.next_beacon = NULL;
834
835 /* turn off carrier for this interface and dependent VLANs */
836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
837 netif_carrier_off(vlan->dev);
838 netif_carrier_off(dev);
839
840 /* remove beacon and probe response */
841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
843 kfree_rcu(old_beacon, rcu_head);
844 if (old_probe_resp)
845 kfree_rcu(old_probe_resp, rcu_head);
846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
847
848 __sta_info_flush(sdata, true);
849 ieee80211_free_keys(sdata, true);
850
851 sdata->vif.bss_conf.enable_beacon = false;
852 sdata->vif.bss_conf.ssid_len = 0;
853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
855
856 if (sdata->wdev.cac_started) {
857 chandef = sdata->vif.bss_conf.chandef;
858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
859 cfg80211_cac_event(sdata->dev, &chandef,
860 NL80211_RADAR_CAC_ABORTED,
861 GFP_KERNEL);
862 }
863
864 drv_stop_ap(sdata->local, sdata);
865
866 /* free all potentially still buffered bcast frames */
867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
868 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
869
870 mutex_lock(&local->mtx);
871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
872 ieee80211_vif_release_channel(sdata);
873 mutex_unlock(&local->mtx);
874
875 return 0;
876 }
877
878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
879 struct iapp_layer2_update {
880 u8 da[ETH_ALEN]; /* broadcast */
881 u8 sa[ETH_ALEN]; /* STA addr */
882 __be16 len; /* 6 */
883 u8 dsap; /* 0 */
884 u8 ssap; /* 0 */
885 u8 control;
886 u8 xid_info[3];
887 } __packed;
888
889 static void ieee80211_send_layer2_update(struct sta_info *sta)
890 {
891 struct iapp_layer2_update *msg;
892 struct sk_buff *skb;
893
894 /* Send Level 2 Update Frame to update forwarding tables in layer 2
895 * bridge devices */
896
897 skb = dev_alloc_skb(sizeof(*msg));
898 if (!skb)
899 return;
900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
901
902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
904
905 eth_broadcast_addr(msg->da);
906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
907 msg->len = htons(6);
908 msg->dsap = 0;
909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
910 msg->control = 0xaf; /* XID response lsb.1111F101.
911 * F=0 (no poll command; unsolicited frame) */
912 msg->xid_info[0] = 0x81; /* XID format identifier */
913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
915
916 skb->dev = sta->sdata->dev;
917 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
918 memset(skb->cb, 0, sizeof(skb->cb));
919 netif_rx_ni(skb);
920 }
921
922 static int sta_apply_auth_flags(struct ieee80211_local *local,
923 struct sta_info *sta,
924 u32 mask, u32 set)
925 {
926 int ret;
927
928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
930 !test_sta_flag(sta, WLAN_STA_AUTH)) {
931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
932 if (ret)
933 return ret;
934 }
935
936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
938 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
939 /*
940 * When peer becomes associated, init rate control as
941 * well. Some drivers require rate control initialized
942 * before drv_sta_state() is called.
943 */
944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
945 rate_control_rate_init(sta);
946
947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
948 if (ret)
949 return ret;
950 }
951
952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
957 else
958 ret = 0;
959 if (ret)
960 return ret;
961 }
962
963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
965 test_sta_flag(sta, WLAN_STA_ASSOC)) {
966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
967 if (ret)
968 return ret;
969 }
970
971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
973 test_sta_flag(sta, WLAN_STA_AUTH)) {
974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
975 if (ret)
976 return ret;
977 }
978
979 return 0;
980 }
981
982 static void sta_apply_mesh_params(struct ieee80211_local *local,
983 struct sta_info *sta,
984 struct station_parameters *params)
985 {
986 #ifdef CONFIG_MAC80211_MESH
987 struct ieee80211_sub_if_data *sdata = sta->sdata;
988 u32 changed = 0;
989
990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
991 switch (params->plink_state) {
992 case NL80211_PLINK_ESTAB:
993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
994 changed = mesh_plink_inc_estab_count(sdata);
995 sta->mesh->plink_state = params->plink_state;
996
997 ieee80211_mps_sta_status_update(sta);
998 changed |= ieee80211_mps_set_sta_local_pm(sta,
999 sdata->u.mesh.mshcfg.power_mode);
1000 break;
1001 case NL80211_PLINK_LISTEN:
1002 case NL80211_PLINK_BLOCKED:
1003 case NL80211_PLINK_OPN_SNT:
1004 case NL80211_PLINK_OPN_RCVD:
1005 case NL80211_PLINK_CNF_RCVD:
1006 case NL80211_PLINK_HOLDING:
1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1008 changed = mesh_plink_dec_estab_count(sdata);
1009 sta->mesh->plink_state = params->plink_state;
1010
1011 ieee80211_mps_sta_status_update(sta);
1012 changed |= ieee80211_mps_set_sta_local_pm(sta,
1013 NL80211_MESH_POWER_UNKNOWN);
1014 break;
1015 default:
1016 /* nothing */
1017 break;
1018 }
1019 }
1020
1021 switch (params->plink_action) {
1022 case NL80211_PLINK_ACTION_NO_ACTION:
1023 /* nothing */
1024 break;
1025 case NL80211_PLINK_ACTION_OPEN:
1026 changed |= mesh_plink_open(sta);
1027 break;
1028 case NL80211_PLINK_ACTION_BLOCK:
1029 changed |= mesh_plink_block(sta);
1030 break;
1031 }
1032
1033 if (params->local_pm)
1034 changed |= ieee80211_mps_set_sta_local_pm(sta,
1035 params->local_pm);
1036
1037 ieee80211_mbss_info_change_notify(sdata, changed);
1038 #endif
1039 }
1040
1041 static int sta_apply_parameters(struct ieee80211_local *local,
1042 struct sta_info *sta,
1043 struct station_parameters *params)
1044 {
1045 int ret = 0;
1046 struct ieee80211_supported_band *sband;
1047 struct ieee80211_sub_if_data *sdata = sta->sdata;
1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1049 u32 mask, set;
1050
1051 sband = local->hw.wiphy->bands[band];
1052
1053 mask = params->sta_flags_mask;
1054 set = params->sta_flags_set;
1055
1056 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1057 /*
1058 * In mesh mode, ASSOCIATED isn't part of the nl80211
1059 * API but must follow AUTHENTICATED for driver state.
1060 */
1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1066 /*
1067 * TDLS -- everything follows authorized, but
1068 * only becoming authorized is possible, not
1069 * going back
1070 */
1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1073 BIT(NL80211_STA_FLAG_ASSOCIATED);
1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1075 BIT(NL80211_STA_FLAG_ASSOCIATED);
1076 }
1077 }
1078
1079 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1080 local->hw.queues >= IEEE80211_NUM_ACS)
1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1082
1083 /* auth flags will be set later for TDLS,
1084 * and for unassociated stations that move to assocaited */
1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1088 ret = sta_apply_auth_flags(local, sta, mask, set);
1089 if (ret)
1090 return ret;
1091 }
1092
1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1096 else
1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1098 }
1099
1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1102 if (set & BIT(NL80211_STA_FLAG_MFP))
1103 set_sta_flag(sta, WLAN_STA_MFP);
1104 else
1105 clear_sta_flag(sta, WLAN_STA_MFP);
1106 }
1107
1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1111 else
1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1113 }
1114
1115 /* mark TDLS channel switch support, if the AP allows it */
1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1117 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1118 params->ext_capab_len >= 4 &&
1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1121
1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1123 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1125 params->ext_capab_len >= 8 &&
1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1128
1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1130 sta->sta.uapsd_queues = params->uapsd_queues;
1131 sta->sta.max_sp = params->max_sp;
1132 }
1133
1134 /*
1135 * cfg80211 validates this (1-2007) and allows setting the AID
1136 * only when creating a new station entry
1137 */
1138 if (params->aid)
1139 sta->sta.aid = params->aid;
1140
1141 /*
1142 * Some of the following updates would be racy if called on an
1143 * existing station, via ieee80211_change_station(). However,
1144 * all such changes are rejected by cfg80211 except for updates
1145 * changing the supported rates on an existing but not yet used
1146 * TDLS peer.
1147 */
1148
1149 if (params->listen_interval >= 0)
1150 sta->listen_interval = params->listen_interval;
1151
1152 if (params->supported_rates) {
1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1154 sband, params->supported_rates,
1155 params->supported_rates_len,
1156 &sta->sta.supp_rates[band]);
1157 }
1158
1159 if (params->ht_capa)
1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1161 params->ht_capa, sta);
1162
1163 if (params->vht_capa)
1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1165 params->vht_capa, sta);
1166
1167 if (params->opmode_notif_used) {
1168 /* returned value is only needed for rc update, but the
1169 * rc isn't initialized here yet, so ignore it
1170 */
1171 __ieee80211_vht_handle_opmode(sdata, sta,
1172 params->opmode_notif, band);
1173 }
1174
1175 if (ieee80211_vif_is_mesh(&sdata->vif))
1176 sta_apply_mesh_params(local, sta, params);
1177
1178 /* set the STA state after all sta info from usermode has been set */
1179 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1180 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1181 ret = sta_apply_auth_flags(local, sta, mask, set);
1182 if (ret)
1183 return ret;
1184 }
1185
1186 return 0;
1187 }
1188
1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1190 const u8 *mac,
1191 struct station_parameters *params)
1192 {
1193 struct ieee80211_local *local = wiphy_priv(wiphy);
1194 struct sta_info *sta;
1195 struct ieee80211_sub_if_data *sdata;
1196 int err;
1197 int layer2_update;
1198
1199 if (params->vlan) {
1200 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1201
1202 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1203 sdata->vif.type != NL80211_IFTYPE_AP)
1204 return -EINVAL;
1205 } else
1206 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207
1208 if (ether_addr_equal(mac, sdata->vif.addr))
1209 return -EINVAL;
1210
1211 if (is_multicast_ether_addr(mac))
1212 return -EINVAL;
1213
1214 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1215 if (!sta)
1216 return -ENOMEM;
1217
1218 /*
1219 * defaults -- if userspace wants something else we'll
1220 * change it accordingly in sta_apply_parameters()
1221 */
1222 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
1223 !(params->sta_flags_set & (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1224 BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1225 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1226 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1227 }
1228 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1229 sta->sta.tdls = true;
1230
1231 err = sta_apply_parameters(local, sta, params);
1232 if (err) {
1233 sta_info_free(local, sta);
1234 return err;
1235 }
1236
1237 /*
1238 * for TDLS and for unassociated station, rate control should be
1239 * initialized only when rates are known and station is marked
1240 * authorized/associated
1241 */
1242 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1243 test_sta_flag(sta, WLAN_STA_ASSOC))
1244 rate_control_rate_init(sta);
1245
1246 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1247 sdata->vif.type == NL80211_IFTYPE_AP;
1248
1249 err = sta_info_insert_rcu(sta);
1250 if (err) {
1251 rcu_read_unlock();
1252 return err;
1253 }
1254
1255 if (layer2_update)
1256 ieee80211_send_layer2_update(sta);
1257
1258 rcu_read_unlock();
1259
1260 return 0;
1261 }
1262
1263 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1264 struct station_del_parameters *params)
1265 {
1266 struct ieee80211_sub_if_data *sdata;
1267
1268 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1269
1270 if (params->mac)
1271 return sta_info_destroy_addr_bss(sdata, params->mac);
1272
1273 sta_info_flush(sdata);
1274 return 0;
1275 }
1276
1277 static int ieee80211_change_station(struct wiphy *wiphy,
1278 struct net_device *dev, const u8 *mac,
1279 struct station_parameters *params)
1280 {
1281 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282 struct ieee80211_local *local = wiphy_priv(wiphy);
1283 struct sta_info *sta;
1284 struct ieee80211_sub_if_data *vlansdata;
1285 enum cfg80211_station_type statype;
1286 int err;
1287
1288 mutex_lock(&local->sta_mtx);
1289
1290 sta = sta_info_get_bss(sdata, mac);
1291 if (!sta) {
1292 err = -ENOENT;
1293 goto out_err;
1294 }
1295
1296 switch (sdata->vif.type) {
1297 case NL80211_IFTYPE_MESH_POINT:
1298 if (sdata->u.mesh.user_mpm)
1299 statype = CFG80211_STA_MESH_PEER_USER;
1300 else
1301 statype = CFG80211_STA_MESH_PEER_KERNEL;
1302 break;
1303 case NL80211_IFTYPE_ADHOC:
1304 statype = CFG80211_STA_IBSS;
1305 break;
1306 case NL80211_IFTYPE_STATION:
1307 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1308 statype = CFG80211_STA_AP_STA;
1309 break;
1310 }
1311 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1312 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1313 else
1314 statype = CFG80211_STA_TDLS_PEER_SETUP;
1315 break;
1316 case NL80211_IFTYPE_AP:
1317 case NL80211_IFTYPE_AP_VLAN:
1318 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1319 statype = CFG80211_STA_AP_CLIENT;
1320 else
1321 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1322 break;
1323 default:
1324 err = -EOPNOTSUPP;
1325 goto out_err;
1326 }
1327
1328 err = cfg80211_check_station_change(wiphy, params, statype);
1329 if (err)
1330 goto out_err;
1331
1332 if (params->vlan && params->vlan != sta->sdata->dev) {
1333 bool prev_4addr = false;
1334 bool new_4addr = false;
1335
1336 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1337
1338 if (params->vlan->ieee80211_ptr->use_4addr) {
1339 if (vlansdata->u.vlan.sta) {
1340 err = -EBUSY;
1341 goto out_err;
1342 }
1343
1344 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1345 new_4addr = true;
1346 }
1347
1348 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1349 sta->sdata->u.vlan.sta) {
1350 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1351 prev_4addr = true;
1352 }
1353
1354 sta->sdata = vlansdata;
1355 ieee80211_check_fast_xmit(sta);
1356
1357 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1358 prev_4addr != new_4addr) {
1359 if (new_4addr)
1360 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1361 else
1362 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1363 }
1364
1365 ieee80211_send_layer2_update(sta);
1366 }
1367
1368 err = sta_apply_parameters(local, sta, params);
1369 if (err)
1370 goto out_err;
1371
1372 mutex_unlock(&local->sta_mtx);
1373
1374 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1375 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1376 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1377 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1378 sta_info_tx_streams(sta) != 1) {
1379 ht_dbg(sta->sdata,
1380 "%pM just authorized and MIMO capable - update SMPS\n",
1381 sta->sta.addr);
1382 ieee80211_send_smps_action(sta->sdata,
1383 sta->sdata->bss->req_smps,
1384 sta->sta.addr,
1385 sta->sdata->vif.bss_conf.bssid);
1386 }
1387
1388 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1389 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1390 ieee80211_recalc_ps(local);
1391 ieee80211_recalc_ps_vif(sdata);
1392 }
1393
1394 return 0;
1395 out_err:
1396 mutex_unlock(&local->sta_mtx);
1397 return err;
1398 }
1399
1400 #ifdef CONFIG_MAC80211_MESH
1401 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1402 const u8 *dst, const u8 *next_hop)
1403 {
1404 struct ieee80211_sub_if_data *sdata;
1405 struct mesh_path *mpath;
1406 struct sta_info *sta;
1407
1408 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1409
1410 rcu_read_lock();
1411 sta = sta_info_get(sdata, next_hop);
1412 if (!sta) {
1413 rcu_read_unlock();
1414 return -ENOENT;
1415 }
1416
1417 mpath = mesh_path_add(sdata, dst);
1418 if (IS_ERR(mpath)) {
1419 rcu_read_unlock();
1420 return PTR_ERR(mpath);
1421 }
1422
1423 mesh_path_fix_nexthop(mpath, sta);
1424
1425 rcu_read_unlock();
1426 return 0;
1427 }
1428
1429 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 const u8 *dst)
1431 {
1432 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433
1434 if (dst)
1435 return mesh_path_del(sdata, dst);
1436
1437 mesh_path_flush_by_iface(sdata);
1438 return 0;
1439 }
1440
1441 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1442 const u8 *dst, const u8 *next_hop)
1443 {
1444 struct ieee80211_sub_if_data *sdata;
1445 struct mesh_path *mpath;
1446 struct sta_info *sta;
1447
1448 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1449
1450 rcu_read_lock();
1451
1452 sta = sta_info_get(sdata, next_hop);
1453 if (!sta) {
1454 rcu_read_unlock();
1455 return -ENOENT;
1456 }
1457
1458 mpath = mesh_path_lookup(sdata, dst);
1459 if (!mpath) {
1460 rcu_read_unlock();
1461 return -ENOENT;
1462 }
1463
1464 mesh_path_fix_nexthop(mpath, sta);
1465
1466 rcu_read_unlock();
1467 return 0;
1468 }
1469
1470 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1471 struct mpath_info *pinfo)
1472 {
1473 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1474
1475 if (next_hop_sta)
1476 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1477 else
1478 eth_zero_addr(next_hop);
1479
1480 memset(pinfo, 0, sizeof(*pinfo));
1481
1482 pinfo->generation = mesh_paths_generation;
1483
1484 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1485 MPATH_INFO_SN |
1486 MPATH_INFO_METRIC |
1487 MPATH_INFO_EXPTIME |
1488 MPATH_INFO_DISCOVERY_TIMEOUT |
1489 MPATH_INFO_DISCOVERY_RETRIES |
1490 MPATH_INFO_FLAGS;
1491
1492 pinfo->frame_qlen = mpath->frame_queue.qlen;
1493 pinfo->sn = mpath->sn;
1494 pinfo->metric = mpath->metric;
1495 if (time_before(jiffies, mpath->exp_time))
1496 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1497 pinfo->discovery_timeout =
1498 jiffies_to_msecs(mpath->discovery_timeout);
1499 pinfo->discovery_retries = mpath->discovery_retries;
1500 if (mpath->flags & MESH_PATH_ACTIVE)
1501 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1502 if (mpath->flags & MESH_PATH_RESOLVING)
1503 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1504 if (mpath->flags & MESH_PATH_SN_VALID)
1505 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1506 if (mpath->flags & MESH_PATH_FIXED)
1507 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1508 if (mpath->flags & MESH_PATH_RESOLVED)
1509 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1510 }
1511
1512 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1513 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1514
1515 {
1516 struct ieee80211_sub_if_data *sdata;
1517 struct mesh_path *mpath;
1518
1519 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1520
1521 rcu_read_lock();
1522 mpath = mesh_path_lookup(sdata, dst);
1523 if (!mpath) {
1524 rcu_read_unlock();
1525 return -ENOENT;
1526 }
1527 memcpy(dst, mpath->dst, ETH_ALEN);
1528 mpath_set_pinfo(mpath, next_hop, pinfo);
1529 rcu_read_unlock();
1530 return 0;
1531 }
1532
1533 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1534 int idx, u8 *dst, u8 *next_hop,
1535 struct mpath_info *pinfo)
1536 {
1537 struct ieee80211_sub_if_data *sdata;
1538 struct mesh_path *mpath;
1539
1540 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542 rcu_read_lock();
1543 mpath = mesh_path_lookup_by_idx(sdata, idx);
1544 if (!mpath) {
1545 rcu_read_unlock();
1546 return -ENOENT;
1547 }
1548 memcpy(dst, mpath->dst, ETH_ALEN);
1549 mpath_set_pinfo(mpath, next_hop, pinfo);
1550 rcu_read_unlock();
1551 return 0;
1552 }
1553
1554 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1555 struct mpath_info *pinfo)
1556 {
1557 memset(pinfo, 0, sizeof(*pinfo));
1558 memcpy(mpp, mpath->mpp, ETH_ALEN);
1559
1560 pinfo->generation = mpp_paths_generation;
1561 }
1562
1563 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1564 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1565
1566 {
1567 struct ieee80211_sub_if_data *sdata;
1568 struct mesh_path *mpath;
1569
1570 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571
1572 rcu_read_lock();
1573 mpath = mpp_path_lookup(sdata, dst);
1574 if (!mpath) {
1575 rcu_read_unlock();
1576 return -ENOENT;
1577 }
1578 memcpy(dst, mpath->dst, ETH_ALEN);
1579 mpp_set_pinfo(mpath, mpp, pinfo);
1580 rcu_read_unlock();
1581 return 0;
1582 }
1583
1584 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1585 int idx, u8 *dst, u8 *mpp,
1586 struct mpath_info *pinfo)
1587 {
1588 struct ieee80211_sub_if_data *sdata;
1589 struct mesh_path *mpath;
1590
1591 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1592
1593 rcu_read_lock();
1594 mpath = mpp_path_lookup_by_idx(sdata, idx);
1595 if (!mpath) {
1596 rcu_read_unlock();
1597 return -ENOENT;
1598 }
1599 memcpy(dst, mpath->dst, ETH_ALEN);
1600 mpp_set_pinfo(mpath, mpp, pinfo);
1601 rcu_read_unlock();
1602 return 0;
1603 }
1604
1605 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1606 struct net_device *dev,
1607 struct mesh_config *conf)
1608 {
1609 struct ieee80211_sub_if_data *sdata;
1610 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1611
1612 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1613 return 0;
1614 }
1615
1616 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1617 {
1618 return (mask >> (parm-1)) & 0x1;
1619 }
1620
1621 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1622 const struct mesh_setup *setup)
1623 {
1624 u8 *new_ie;
1625 const u8 *old_ie;
1626 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1627 struct ieee80211_sub_if_data, u.mesh);
1628
1629 /* allocate information elements */
1630 new_ie = NULL;
1631 old_ie = ifmsh->ie;
1632
1633 if (setup->ie_len) {
1634 new_ie = kmemdup(setup->ie, setup->ie_len,
1635 GFP_KERNEL);
1636 if (!new_ie)
1637 return -ENOMEM;
1638 }
1639 ifmsh->ie_len = setup->ie_len;
1640 ifmsh->ie = new_ie;
1641 kfree(old_ie);
1642
1643 /* now copy the rest of the setup parameters */
1644 ifmsh->mesh_id_len = setup->mesh_id_len;
1645 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1646 ifmsh->mesh_sp_id = setup->sync_method;
1647 ifmsh->mesh_pp_id = setup->path_sel_proto;
1648 ifmsh->mesh_pm_id = setup->path_metric;
1649 ifmsh->user_mpm = setup->user_mpm;
1650 ifmsh->mesh_auth_id = setup->auth_id;
1651 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1652 if (setup->is_authenticated)
1653 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1654 if (setup->is_secure)
1655 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1656
1657 /* mcast rate setting in Mesh Node */
1658 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1659 sizeof(setup->mcast_rate));
1660 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1661
1662 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1663 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1664
1665 return 0;
1666 }
1667
1668 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1669 struct net_device *dev, u32 mask,
1670 const struct mesh_config *nconf)
1671 {
1672 struct mesh_config *conf;
1673 struct ieee80211_sub_if_data *sdata;
1674 struct ieee80211_if_mesh *ifmsh;
1675
1676 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1677 ifmsh = &sdata->u.mesh;
1678
1679 /* Set the config options which we are interested in setting */
1680 conf = &(sdata->u.mesh.mshcfg);
1681 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1682 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1683 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1684 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1685 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1686 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1687 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1688 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1689 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1690 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1691 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1692 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1693 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1694 conf->element_ttl = nconf->element_ttl;
1695 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1696 if (ifmsh->user_mpm)
1697 return -EBUSY;
1698 conf->auto_open_plinks = nconf->auto_open_plinks;
1699 }
1700 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1701 conf->dot11MeshNbrOffsetMaxNeighbor =
1702 nconf->dot11MeshNbrOffsetMaxNeighbor;
1703 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1704 conf->dot11MeshHWMPmaxPREQretries =
1705 nconf->dot11MeshHWMPmaxPREQretries;
1706 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1707 conf->path_refresh_time = nconf->path_refresh_time;
1708 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1709 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1710 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1711 conf->dot11MeshHWMPactivePathTimeout =
1712 nconf->dot11MeshHWMPactivePathTimeout;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1714 conf->dot11MeshHWMPpreqMinInterval =
1715 nconf->dot11MeshHWMPpreqMinInterval;
1716 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1717 conf->dot11MeshHWMPperrMinInterval =
1718 nconf->dot11MeshHWMPperrMinInterval;
1719 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1720 mask))
1721 conf->dot11MeshHWMPnetDiameterTraversalTime =
1722 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1724 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1725 ieee80211_mesh_root_setup(ifmsh);
1726 }
1727 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1728 /* our current gate announcement implementation rides on root
1729 * announcements, so require this ifmsh to also be a root node
1730 * */
1731 if (nconf->dot11MeshGateAnnouncementProtocol &&
1732 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1733 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1734 ieee80211_mesh_root_setup(ifmsh);
1735 }
1736 conf->dot11MeshGateAnnouncementProtocol =
1737 nconf->dot11MeshGateAnnouncementProtocol;
1738 }
1739 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1740 conf->dot11MeshHWMPRannInterval =
1741 nconf->dot11MeshHWMPRannInterval;
1742 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1743 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1744 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1745 /* our RSSI threshold implementation is supported only for
1746 * devices that report signal in dBm.
1747 */
1748 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1749 return -ENOTSUPP;
1750 conf->rssi_threshold = nconf->rssi_threshold;
1751 }
1752 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1753 conf->ht_opmode = nconf->ht_opmode;
1754 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1755 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1756 }
1757 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1758 conf->dot11MeshHWMPactivePathToRootTimeout =
1759 nconf->dot11MeshHWMPactivePathToRootTimeout;
1760 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1761 conf->dot11MeshHWMProotInterval =
1762 nconf->dot11MeshHWMProotInterval;
1763 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1764 conf->dot11MeshHWMPconfirmationInterval =
1765 nconf->dot11MeshHWMPconfirmationInterval;
1766 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1767 conf->power_mode = nconf->power_mode;
1768 ieee80211_mps_local_status_update(sdata);
1769 }
1770 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1771 conf->dot11MeshAwakeWindowDuration =
1772 nconf->dot11MeshAwakeWindowDuration;
1773 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1774 conf->plink_timeout = nconf->plink_timeout;
1775 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1776 return 0;
1777 }
1778
1779 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1780 const struct mesh_config *conf,
1781 const struct mesh_setup *setup)
1782 {
1783 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1784 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1785 int err;
1786
1787 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1788 err = copy_mesh_setup(ifmsh, setup);
1789 if (err)
1790 return err;
1791
1792 /* can mesh use other SMPS modes? */
1793 sdata->smps_mode = IEEE80211_SMPS_OFF;
1794 sdata->needed_rx_chains = sdata->local->rx_chains;
1795
1796 mutex_lock(&sdata->local->mtx);
1797 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1798 IEEE80211_CHANCTX_SHARED);
1799 mutex_unlock(&sdata->local->mtx);
1800 if (err)
1801 return err;
1802
1803 return ieee80211_start_mesh(sdata);
1804 }
1805
1806 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1807 {
1808 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1809
1810 ieee80211_stop_mesh(sdata);
1811 mutex_lock(&sdata->local->mtx);
1812 ieee80211_vif_release_channel(sdata);
1813 mutex_unlock(&sdata->local->mtx);
1814
1815 return 0;
1816 }
1817 #endif
1818
1819 static int ieee80211_change_bss(struct wiphy *wiphy,
1820 struct net_device *dev,
1821 struct bss_parameters *params)
1822 {
1823 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1824 enum ieee80211_band band;
1825 u32 changed = 0;
1826
1827 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1828 return -ENOENT;
1829
1830 band = ieee80211_get_sdata_band(sdata);
1831
1832 if (params->use_cts_prot >= 0) {
1833 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1834 changed |= BSS_CHANGED_ERP_CTS_PROT;
1835 }
1836 if (params->use_short_preamble >= 0) {
1837 sdata->vif.bss_conf.use_short_preamble =
1838 params->use_short_preamble;
1839 changed |= BSS_CHANGED_ERP_PREAMBLE;
1840 }
1841
1842 if (!sdata->vif.bss_conf.use_short_slot &&
1843 band == IEEE80211_BAND_5GHZ) {
1844 sdata->vif.bss_conf.use_short_slot = true;
1845 changed |= BSS_CHANGED_ERP_SLOT;
1846 }
1847
1848 if (params->use_short_slot_time >= 0) {
1849 sdata->vif.bss_conf.use_short_slot =
1850 params->use_short_slot_time;
1851 changed |= BSS_CHANGED_ERP_SLOT;
1852 }
1853
1854 if (params->basic_rates) {
1855 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1856 wiphy->bands[band],
1857 params->basic_rates,
1858 params->basic_rates_len,
1859 &sdata->vif.bss_conf.basic_rates);
1860 changed |= BSS_CHANGED_BASIC_RATES;
1861 }
1862
1863 if (params->ap_isolate >= 0) {
1864 if (params->ap_isolate)
1865 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1866 else
1867 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1868 }
1869
1870 if (params->ht_opmode >= 0) {
1871 sdata->vif.bss_conf.ht_operation_mode =
1872 (u16) params->ht_opmode;
1873 changed |= BSS_CHANGED_HT;
1874 }
1875
1876 if (params->p2p_ctwindow >= 0) {
1877 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1878 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1879 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1880 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1881 changed |= BSS_CHANGED_P2P_PS;
1882 }
1883
1884 if (params->p2p_opp_ps > 0) {
1885 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1886 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1887 changed |= BSS_CHANGED_P2P_PS;
1888 } else if (params->p2p_opp_ps == 0) {
1889 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1890 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1891 changed |= BSS_CHANGED_P2P_PS;
1892 }
1893
1894 ieee80211_bss_info_change_notify(sdata, changed);
1895
1896 return 0;
1897 }
1898
1899 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1900 struct net_device *dev,
1901 struct ieee80211_txq_params *params)
1902 {
1903 struct ieee80211_local *local = wiphy_priv(wiphy);
1904 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1905 struct ieee80211_tx_queue_params p;
1906
1907 if (!local->ops->conf_tx)
1908 return -EOPNOTSUPP;
1909
1910 if (local->hw.queues < IEEE80211_NUM_ACS)
1911 return -EOPNOTSUPP;
1912
1913 memset(&p, 0, sizeof(p));
1914 p.aifs = params->aifs;
1915 p.cw_max = params->cwmax;
1916 p.cw_min = params->cwmin;
1917 p.txop = params->txop;
1918
1919 /*
1920 * Setting tx queue params disables u-apsd because it's only
1921 * called in master mode.
1922 */
1923 p.uapsd = false;
1924
1925 sdata->tx_conf[params->ac] = p;
1926 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1927 wiphy_debug(local->hw.wiphy,
1928 "failed to set TX queue parameters for AC %d\n",
1929 params->ac);
1930 return -EINVAL;
1931 }
1932
1933 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1934
1935 return 0;
1936 }
1937
1938 #ifdef CONFIG_PM
1939 static int ieee80211_suspend(struct wiphy *wiphy,
1940 struct cfg80211_wowlan *wowlan)
1941 {
1942 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1943 }
1944
1945 static int ieee80211_resume(struct wiphy *wiphy)
1946 {
1947 return __ieee80211_resume(wiphy_priv(wiphy));
1948 }
1949 #else
1950 #define ieee80211_suspend NULL
1951 #define ieee80211_resume NULL
1952 #endif
1953
1954 static int ieee80211_scan(struct wiphy *wiphy,
1955 struct cfg80211_scan_request *req)
1956 {
1957 struct ieee80211_sub_if_data *sdata;
1958
1959 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1960
1961 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1962 case NL80211_IFTYPE_STATION:
1963 case NL80211_IFTYPE_ADHOC:
1964 case NL80211_IFTYPE_MESH_POINT:
1965 case NL80211_IFTYPE_P2P_CLIENT:
1966 case NL80211_IFTYPE_P2P_DEVICE:
1967 break;
1968 case NL80211_IFTYPE_P2P_GO:
1969 if (sdata->local->ops->hw_scan)
1970 break;
1971 /*
1972 * FIXME: implement NoA while scanning in software,
1973 * for now fall through to allow scanning only when
1974 * beaconing hasn't been configured yet
1975 */
1976 case NL80211_IFTYPE_AP:
1977 /*
1978 * If the scan has been forced (and the driver supports
1979 * forcing), don't care about being beaconing already.
1980 * This will create problems to the attached stations (e.g. all
1981 * the frames sent while scanning on other channel will be
1982 * lost)
1983 */
1984 if (sdata->u.ap.beacon &&
1985 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1986 !(req->flags & NL80211_SCAN_FLAG_AP)))
1987 return -EOPNOTSUPP;
1988 break;
1989 default:
1990 return -EOPNOTSUPP;
1991 }
1992
1993 return ieee80211_request_scan(sdata, req);
1994 }
1995
1996 static int
1997 ieee80211_sched_scan_start(struct wiphy *wiphy,
1998 struct net_device *dev,
1999 struct cfg80211_sched_scan_request *req)
2000 {
2001 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2002
2003 if (!sdata->local->ops->sched_scan_start)
2004 return -EOPNOTSUPP;
2005
2006 return ieee80211_request_sched_scan_start(sdata, req);
2007 }
2008
2009 static int
2010 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2011 {
2012 struct ieee80211_local *local = wiphy_priv(wiphy);
2013
2014 if (!local->ops->sched_scan_stop)
2015 return -EOPNOTSUPP;
2016
2017 return ieee80211_request_sched_scan_stop(local);
2018 }
2019
2020 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2021 struct cfg80211_auth_request *req)
2022 {
2023 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2024 }
2025
2026 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2027 struct cfg80211_assoc_request *req)
2028 {
2029 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2030 }
2031
2032 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2033 struct cfg80211_deauth_request *req)
2034 {
2035 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2036 }
2037
2038 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2039 struct cfg80211_disassoc_request *req)
2040 {
2041 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2042 }
2043
2044 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2045 struct cfg80211_ibss_params *params)
2046 {
2047 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2048 }
2049
2050 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2051 {
2052 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2053 }
2054
2055 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2056 struct ocb_setup *setup)
2057 {
2058 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2059 }
2060
2061 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2062 {
2063 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2064 }
2065
2066 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2067 int rate[IEEE80211_NUM_BANDS])
2068 {
2069 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2070
2071 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2072 sizeof(int) * IEEE80211_NUM_BANDS);
2073
2074 return 0;
2075 }
2076
2077 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2078 {
2079 struct ieee80211_local *local = wiphy_priv(wiphy);
2080 int err;
2081
2082 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2083 ieee80211_check_fast_xmit_all(local);
2084
2085 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2086
2087 if (err) {
2088 ieee80211_check_fast_xmit_all(local);
2089 return err;
2090 }
2091 }
2092
2093 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2094 (changed & WIPHY_PARAM_DYN_ACK)) {
2095 s16 coverage_class;
2096
2097 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2098 wiphy->coverage_class : -1;
2099 err = drv_set_coverage_class(local, coverage_class);
2100
2101 if (err)
2102 return err;
2103 }
2104
2105 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2106 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2107
2108 if (err)
2109 return err;
2110 }
2111
2112 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2113 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2114 return -EINVAL;
2115 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2116 }
2117 if (changed & WIPHY_PARAM_RETRY_LONG) {
2118 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2119 return -EINVAL;
2120 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2121 }
2122 if (changed &
2123 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2124 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2125
2126 return 0;
2127 }
2128
2129 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2130 struct wireless_dev *wdev,
2131 enum nl80211_tx_power_setting type, int mbm)
2132 {
2133 struct ieee80211_local *local = wiphy_priv(wiphy);
2134 struct ieee80211_sub_if_data *sdata;
2135 enum nl80211_tx_power_setting txp_type = type;
2136 bool update_txp_type = false;
2137
2138 if (wdev) {
2139 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2140
2141 switch (type) {
2142 case NL80211_TX_POWER_AUTOMATIC:
2143 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2144 txp_type = NL80211_TX_POWER_LIMITED;
2145 break;
2146 case NL80211_TX_POWER_LIMITED:
2147 case NL80211_TX_POWER_FIXED:
2148 if (mbm < 0 || (mbm % 100))
2149 return -EOPNOTSUPP;
2150 sdata->user_power_level = MBM_TO_DBM(mbm);
2151 break;
2152 }
2153
2154 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2155 update_txp_type = true;
2156 sdata->vif.bss_conf.txpower_type = txp_type;
2157 }
2158
2159 ieee80211_recalc_txpower(sdata, update_txp_type);
2160
2161 return 0;
2162 }
2163
2164 switch (type) {
2165 case NL80211_TX_POWER_AUTOMATIC:
2166 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2167 txp_type = NL80211_TX_POWER_LIMITED;
2168 break;
2169 case NL80211_TX_POWER_LIMITED:
2170 case NL80211_TX_POWER_FIXED:
2171 if (mbm < 0 || (mbm % 100))
2172 return -EOPNOTSUPP;
2173 local->user_power_level = MBM_TO_DBM(mbm);
2174 break;
2175 }
2176
2177 mutex_lock(&local->iflist_mtx);
2178 list_for_each_entry(sdata, &local->interfaces, list) {
2179 sdata->user_power_level = local->user_power_level;
2180 if (txp_type != sdata->vif.bss_conf.txpower_type)
2181 update_txp_type = true;
2182 sdata->vif.bss_conf.txpower_type = txp_type;
2183 }
2184 list_for_each_entry(sdata, &local->interfaces, list)
2185 ieee80211_recalc_txpower(sdata, update_txp_type);
2186 mutex_unlock(&local->iflist_mtx);
2187
2188 return 0;
2189 }
2190
2191 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2192 struct wireless_dev *wdev,
2193 int *dbm)
2194 {
2195 struct ieee80211_local *local = wiphy_priv(wiphy);
2196 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2197
2198 if (local->ops->get_txpower)
2199 return drv_get_txpower(local, sdata, dbm);
2200
2201 if (!local->use_chanctx)
2202 *dbm = local->hw.conf.power_level;
2203 else
2204 *dbm = sdata->vif.bss_conf.txpower;
2205
2206 return 0;
2207 }
2208
2209 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2210 const u8 *addr)
2211 {
2212 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2213
2214 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2215
2216 return 0;
2217 }
2218
2219 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2220 {
2221 struct ieee80211_local *local = wiphy_priv(wiphy);
2222
2223 drv_rfkill_poll(local);
2224 }
2225
2226 #ifdef CONFIG_NL80211_TESTMODE
2227 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2228 struct wireless_dev *wdev,
2229 void *data, int len)
2230 {
2231 struct ieee80211_local *local = wiphy_priv(wiphy);
2232 struct ieee80211_vif *vif = NULL;
2233
2234 if (!local->ops->testmode_cmd)
2235 return -EOPNOTSUPP;
2236
2237 if (wdev) {
2238 struct ieee80211_sub_if_data *sdata;
2239
2240 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2241 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2242 vif = &sdata->vif;
2243 }
2244
2245 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2246 }
2247
2248 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2249 struct sk_buff *skb,
2250 struct netlink_callback *cb,
2251 void *data, int len)
2252 {
2253 struct ieee80211_local *local = wiphy_priv(wiphy);
2254
2255 if (!local->ops->testmode_dump)
2256 return -EOPNOTSUPP;
2257
2258 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2259 }
2260 #endif
2261
2262 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2263 enum ieee80211_smps_mode smps_mode)
2264 {
2265 struct sta_info *sta;
2266 enum ieee80211_smps_mode old_req;
2267
2268 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2269 return -EINVAL;
2270
2271 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2272 return 0;
2273
2274 old_req = sdata->u.ap.req_smps;
2275 sdata->u.ap.req_smps = smps_mode;
2276
2277 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2278 if (old_req == smps_mode ||
2279 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2280 return 0;
2281
2282 /* If no associated stations, there's no need to do anything */
2283 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2284 sdata->smps_mode = smps_mode;
2285 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2286 return 0;
2287 }
2288
2289 ht_dbg(sdata,
2290 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2291 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2292
2293 mutex_lock(&sdata->local->sta_mtx);
2294 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2295 /*
2296 * Only stations associated to our AP and
2297 * associated VLANs
2298 */
2299 if (sta->sdata->bss != &sdata->u.ap)
2300 continue;
2301
2302 /* This station doesn't support MIMO - skip it */
2303 if (sta_info_tx_streams(sta) == 1)
2304 continue;
2305
2306 /*
2307 * Don't wake up a STA just to send the action frame
2308 * unless we are getting more restrictive.
2309 */
2310 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2311 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2312 smps_mode)) {
2313 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2314 sta->sta.addr);
2315 continue;
2316 }
2317
2318 /*
2319 * If the STA is not authorized, wait until it gets
2320 * authorized and the action frame will be sent then.
2321 */
2322 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2323 continue;
2324
2325 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2326 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2327 sdata->vif.bss_conf.bssid);
2328 }
2329 mutex_unlock(&sdata->local->sta_mtx);
2330
2331 sdata->smps_mode = smps_mode;
2332 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2333
2334 return 0;
2335 }
2336
2337 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2338 enum ieee80211_smps_mode smps_mode)
2339 {
2340 const u8 *ap;
2341 enum ieee80211_smps_mode old_req;
2342 int err;
2343 struct sta_info *sta;
2344 bool tdls_peer_found = false;
2345
2346 lockdep_assert_held(&sdata->wdev.mtx);
2347
2348 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2349 return -EINVAL;
2350
2351 old_req = sdata->u.mgd.req_smps;
2352 sdata->u.mgd.req_smps = smps_mode;
2353
2354 if (old_req == smps_mode &&
2355 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2356 return 0;
2357
2358 /*
2359 * If not associated, or current association is not an HT
2360 * association, there's no need to do anything, just store
2361 * the new value until we associate.
2362 */
2363 if (!sdata->u.mgd.associated ||
2364 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2365 return 0;
2366
2367 ap = sdata->u.mgd.associated->bssid;
2368
2369 rcu_read_lock();
2370 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2371 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2372 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2373 continue;
2374
2375 tdls_peer_found = true;
2376 break;
2377 }
2378 rcu_read_unlock();
2379
2380 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2381 if (tdls_peer_found || !sdata->u.mgd.powersave)
2382 smps_mode = IEEE80211_SMPS_OFF;
2383 else
2384 smps_mode = IEEE80211_SMPS_DYNAMIC;
2385 }
2386
2387 /* send SM PS frame to AP */
2388 err = ieee80211_send_smps_action(sdata, smps_mode,
2389 ap, ap);
2390 if (err)
2391 sdata->u.mgd.req_smps = old_req;
2392 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2393 ieee80211_teardown_tdls_peers(sdata);
2394
2395 return err;
2396 }
2397
2398 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2399 bool enabled, int timeout)
2400 {
2401 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2402 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2403
2404 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2405 return -EOPNOTSUPP;
2406
2407 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2408 return -EOPNOTSUPP;
2409
2410 if (enabled == sdata->u.mgd.powersave &&
2411 timeout == local->dynamic_ps_forced_timeout)
2412 return 0;
2413
2414 sdata->u.mgd.powersave = enabled;
2415 local->dynamic_ps_forced_timeout = timeout;
2416
2417 /* no change, but if automatic follow powersave */
2418 sdata_lock(sdata);
2419 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2420 sdata_unlock(sdata);
2421
2422 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2423 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2424
2425 ieee80211_recalc_ps(local);
2426 ieee80211_recalc_ps_vif(sdata);
2427
2428 return 0;
2429 }
2430
2431 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2432 struct net_device *dev,
2433 s32 rssi_thold, u32 rssi_hyst)
2434 {
2435 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2436 struct ieee80211_vif *vif = &sdata->vif;
2437 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2438
2439 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2440 rssi_hyst == bss_conf->cqm_rssi_hyst)
2441 return 0;
2442
2443 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2444 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2445 return -EOPNOTSUPP;
2446
2447 bss_conf->cqm_rssi_thold = rssi_thold;
2448 bss_conf->cqm_rssi_hyst = rssi_hyst;
2449 sdata->u.mgd.last_cqm_event_signal = 0;
2450
2451 /* tell the driver upon association, unless already associated */
2452 if (sdata->u.mgd.associated &&
2453 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2454 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2455
2456 return 0;
2457 }
2458
2459 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2460 struct net_device *dev,
2461 const u8 *addr,
2462 const struct cfg80211_bitrate_mask *mask)
2463 {
2464 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2465 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2466 int i, ret;
2467
2468 if (!ieee80211_sdata_running(sdata))
2469 return -ENETDOWN;
2470
2471 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2472 ret = drv_set_bitrate_mask(local, sdata, mask);
2473 if (ret)
2474 return ret;
2475 }
2476
2477 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2478 struct ieee80211_supported_band *sband = wiphy->bands[i];
2479 int j;
2480
2481 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2482 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2483 sizeof(mask->control[i].ht_mcs));
2484 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2485 mask->control[i].vht_mcs,
2486 sizeof(mask->control[i].vht_mcs));
2487
2488 sdata->rc_has_mcs_mask[i] = false;
2489 sdata->rc_has_vht_mcs_mask[i] = false;
2490 if (!sband)
2491 continue;
2492
2493 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2494 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2495 sdata->rc_has_mcs_mask[i] = true;
2496 break;
2497 }
2498 }
2499
2500 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2501 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2502 sdata->rc_has_vht_mcs_mask[i] = true;
2503 break;
2504 }
2505 }
2506 }
2507
2508 return 0;
2509 }
2510
2511 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2512 struct ieee80211_roc_work *new_roc,
2513 struct ieee80211_roc_work *cur_roc)
2514 {
2515 unsigned long now = jiffies;
2516 unsigned long remaining = cur_roc->hw_start_time +
2517 msecs_to_jiffies(cur_roc->duration) -
2518 now;
2519
2520 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2521 return false;
2522
2523 /* if it doesn't fit entirely, schedule a new one */
2524 if (new_roc->duration > jiffies_to_msecs(remaining))
2525 return false;
2526
2527 ieee80211_handle_roc_started(new_roc);
2528
2529 /* add to dependents so we send the expired event properly */
2530 list_add_tail(&new_roc->list, &cur_roc->dependents);
2531 return true;
2532 }
2533
2534 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2535 {
2536 lockdep_assert_held(&local->mtx);
2537
2538 local->roc_cookie_counter++;
2539
2540 /* wow, you wrapped 64 bits ... more likely a bug */
2541 if (WARN_ON(local->roc_cookie_counter == 0))
2542 local->roc_cookie_counter++;
2543
2544 return local->roc_cookie_counter;
2545 }
2546
2547 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2548 struct ieee80211_sub_if_data *sdata,
2549 struct ieee80211_channel *channel,
2550 unsigned int duration, u64 *cookie,
2551 struct sk_buff *txskb,
2552 enum ieee80211_roc_type type)
2553 {
2554 struct ieee80211_roc_work *roc, *tmp;
2555 bool queued = false;
2556 int ret;
2557
2558 lockdep_assert_held(&local->mtx);
2559
2560 if (local->use_chanctx && !local->ops->remain_on_channel)
2561 return -EOPNOTSUPP;
2562
2563 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2564 if (!roc)
2565 return -ENOMEM;
2566
2567 /*
2568 * If the duration is zero, then the driver
2569 * wouldn't actually do anything. Set it to
2570 * 10 for now.
2571 *
2572 * TODO: cancel the off-channel operation
2573 * when we get the SKB's TX status and
2574 * the wait time was zero before.
2575 */
2576 if (!duration)
2577 duration = 10;
2578
2579 roc->chan = channel;
2580 roc->duration = duration;
2581 roc->req_duration = duration;
2582 roc->frame = txskb;
2583 roc->type = type;
2584 roc->sdata = sdata;
2585 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2586 INIT_LIST_HEAD(&roc->dependents);
2587
2588 /*
2589 * cookie is either the roc cookie (for normal roc)
2590 * or the SKB (for mgmt TX)
2591 */
2592 if (!txskb) {
2593 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2594 *cookie = roc->cookie;
2595 } else {
2596 roc->mgmt_tx_cookie = *cookie;
2597 }
2598
2599 /* if there's one pending or we're scanning, queue this one */
2600 if (!list_empty(&local->roc_list) ||
2601 local->scanning || ieee80211_is_radar_required(local))
2602 goto out_check_combine;
2603
2604 /* if not HW assist, just queue & schedule work */
2605 if (!local->ops->remain_on_channel) {
2606 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2607 goto out_queue;
2608 }
2609
2610 /* otherwise actually kick it off here (for error handling) */
2611
2612 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2613 if (ret) {
2614 kfree(roc);
2615 return ret;
2616 }
2617
2618 roc->started = true;
2619 goto out_queue;
2620
2621 out_check_combine:
2622 list_for_each_entry(tmp, &local->roc_list, list) {
2623 if (tmp->chan != channel || tmp->sdata != sdata)
2624 continue;
2625
2626 /*
2627 * Extend this ROC if possible:
2628 *
2629 * If it hasn't started yet, just increase the duration
2630 * and add the new one to the list of dependents.
2631 * If the type of the new ROC has higher priority, modify the
2632 * type of the previous one to match that of the new one.
2633 */
2634 if (!tmp->started) {
2635 list_add_tail(&roc->list, &tmp->dependents);
2636 tmp->duration = max(tmp->duration, roc->duration);
2637 tmp->type = max(tmp->type, roc->type);
2638 queued = true;
2639 break;
2640 }
2641
2642 /* If it has already started, it's more difficult ... */
2643 if (local->ops->remain_on_channel) {
2644 /*
2645 * In the offloaded ROC case, if it hasn't begun, add
2646 * this new one to the dependent list to be handled
2647 * when the master one begins. If it has begun,
2648 * check if it fits entirely within the existing one,
2649 * in which case it will just be dependent as well.
2650 * Otherwise, schedule it by itself.
2651 */
2652 if (!tmp->hw_begun) {
2653 list_add_tail(&roc->list, &tmp->dependents);
2654 queued = true;
2655 break;
2656 }
2657
2658 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2659 queued = true;
2660 } else if (del_timer_sync(&tmp->work.timer)) {
2661 unsigned long new_end;
2662
2663 /*
2664 * In the software ROC case, cancel the timer, if
2665 * that fails then the finish work is already
2666 * queued/pending and thus we queue the new ROC
2667 * normally, if that succeeds then we can extend
2668 * the timer duration and TX the frame (if any.)
2669 */
2670
2671 list_add_tail(&roc->list, &tmp->dependents);
2672 queued = true;
2673
2674 new_end = jiffies + msecs_to_jiffies(roc->duration);
2675
2676 /* ok, it was started & we canceled timer */
2677 if (time_after(new_end, tmp->work.timer.expires))
2678 mod_timer(&tmp->work.timer, new_end);
2679 else
2680 add_timer(&tmp->work.timer);
2681
2682 ieee80211_handle_roc_started(roc);
2683 }
2684 break;
2685 }
2686
2687 out_queue:
2688 if (!queued)
2689 list_add_tail(&roc->list, &local->roc_list);
2690
2691 return 0;
2692 }
2693
2694 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2695 struct wireless_dev *wdev,
2696 struct ieee80211_channel *chan,
2697 unsigned int duration,
2698 u64 *cookie)
2699 {
2700 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2701 struct ieee80211_local *local = sdata->local;
2702 int ret;
2703
2704 mutex_lock(&local->mtx);
2705 ret = ieee80211_start_roc_work(local, sdata, chan,
2706 duration, cookie, NULL,
2707 IEEE80211_ROC_TYPE_NORMAL);
2708 mutex_unlock(&local->mtx);
2709
2710 return ret;
2711 }
2712
2713 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2714 u64 cookie, bool mgmt_tx)
2715 {
2716 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2717 int ret;
2718
2719 mutex_lock(&local->mtx);
2720 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2721 struct ieee80211_roc_work *dep, *tmp2;
2722
2723 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2724 if (!mgmt_tx && dep->cookie != cookie)
2725 continue;
2726 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2727 continue;
2728 /* found dependent item -- just remove it */
2729 list_del(&dep->list);
2730 mutex_unlock(&local->mtx);
2731
2732 ieee80211_roc_notify_destroy(dep, true);
2733 return 0;
2734 }
2735
2736 if (!mgmt_tx && roc->cookie != cookie)
2737 continue;
2738 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2739 continue;
2740
2741 found = roc;
2742 break;
2743 }
2744
2745 if (!found) {
2746 mutex_unlock(&local->mtx);
2747 return -ENOENT;
2748 }
2749
2750 /*
2751 * We found the item to cancel, so do that. Note that it
2752 * may have dependents, which we also cancel (and send
2753 * the expired signal for.) Not doing so would be quite
2754 * tricky here, but we may need to fix it later.
2755 */
2756
2757 if (local->ops->remain_on_channel) {
2758 if (found->started) {
2759 ret = drv_cancel_remain_on_channel(local);
2760 if (WARN_ON_ONCE(ret)) {
2761 mutex_unlock(&local->mtx);
2762 return ret;
2763 }
2764 }
2765
2766 list_del(&found->list);
2767
2768 if (found->started)
2769 ieee80211_start_next_roc(local);
2770 mutex_unlock(&local->mtx);
2771
2772 ieee80211_roc_notify_destroy(found, true);
2773 } else {
2774 /* work may be pending so use it all the time */
2775 found->abort = true;
2776 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2777
2778 mutex_unlock(&local->mtx);
2779
2780 /* work will clean up etc */
2781 flush_delayed_work(&found->work);
2782 WARN_ON(!found->to_be_freed);
2783 kfree(found);
2784 }
2785
2786 return 0;
2787 }
2788
2789 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2790 struct wireless_dev *wdev,
2791 u64 cookie)
2792 {
2793 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2794 struct ieee80211_local *local = sdata->local;
2795
2796 return ieee80211_cancel_roc(local, cookie, false);
2797 }
2798
2799 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2800 struct net_device *dev,
2801 struct cfg80211_chan_def *chandef,
2802 u32 cac_time_ms)
2803 {
2804 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2805 struct ieee80211_local *local = sdata->local;
2806 int err;
2807
2808 mutex_lock(&local->mtx);
2809 if (!list_empty(&local->roc_list) || local->scanning) {
2810 err = -EBUSY;
2811 goto out_unlock;
2812 }
2813
2814 /* whatever, but channel contexts should not complain about that one */
2815 sdata->smps_mode = IEEE80211_SMPS_OFF;
2816 sdata->needed_rx_chains = local->rx_chains;
2817
2818 err = ieee80211_vif_use_channel(sdata, chandef,
2819 IEEE80211_CHANCTX_SHARED);
2820 if (err)
2821 goto out_unlock;
2822
2823 ieee80211_queue_delayed_work(&sdata->local->hw,
2824 &sdata->dfs_cac_timer_work,
2825 msecs_to_jiffies(cac_time_ms));
2826
2827 out_unlock:
2828 mutex_unlock(&local->mtx);
2829 return err;
2830 }
2831
2832 static struct cfg80211_beacon_data *
2833 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2834 {
2835 struct cfg80211_beacon_data *new_beacon;
2836 u8 *pos;
2837 int len;
2838
2839 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2840 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2841 beacon->probe_resp_len;
2842
2843 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2844 if (!new_beacon)
2845 return NULL;
2846
2847 pos = (u8 *)(new_beacon + 1);
2848 if (beacon->head_len) {
2849 new_beacon->head_len = beacon->head_len;
2850 new_beacon->head = pos;
2851 memcpy(pos, beacon->head, beacon->head_len);
2852 pos += beacon->head_len;
2853 }
2854 if (beacon->tail_len) {
2855 new_beacon->tail_len = beacon->tail_len;
2856 new_beacon->tail = pos;
2857 memcpy(pos, beacon->tail, beacon->tail_len);
2858 pos += beacon->tail_len;
2859 }
2860 if (beacon->beacon_ies_len) {
2861 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2862 new_beacon->beacon_ies = pos;
2863 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2864 pos += beacon->beacon_ies_len;
2865 }
2866 if (beacon->proberesp_ies_len) {
2867 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2868 new_beacon->proberesp_ies = pos;
2869 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2870 pos += beacon->proberesp_ies_len;
2871 }
2872 if (beacon->assocresp_ies_len) {
2873 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2874 new_beacon->assocresp_ies = pos;
2875 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2876 pos += beacon->assocresp_ies_len;
2877 }
2878 if (beacon->probe_resp_len) {
2879 new_beacon->probe_resp_len = beacon->probe_resp_len;
2880 beacon->probe_resp = pos;
2881 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2882 pos += beacon->probe_resp_len;
2883 }
2884
2885 return new_beacon;
2886 }
2887
2888 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2889 {
2890 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2891
2892 ieee80211_queue_work(&sdata->local->hw,
2893 &sdata->csa_finalize_work);
2894 }
2895 EXPORT_SYMBOL(ieee80211_csa_finish);
2896
2897 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2898 u32 *changed)
2899 {
2900 int err;
2901
2902 switch (sdata->vif.type) {
2903 case NL80211_IFTYPE_AP:
2904 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2905 NULL);
2906 kfree(sdata->u.ap.next_beacon);
2907 sdata->u.ap.next_beacon = NULL;
2908
2909 if (err < 0)
2910 return err;
2911 *changed |= err;
2912 break;
2913 case NL80211_IFTYPE_ADHOC:
2914 err = ieee80211_ibss_finish_csa(sdata);
2915 if (err < 0)
2916 return err;
2917 *changed |= err;
2918 break;
2919 #ifdef CONFIG_MAC80211_MESH
2920 case NL80211_IFTYPE_MESH_POINT:
2921 err = ieee80211_mesh_finish_csa(sdata);
2922 if (err < 0)
2923 return err;
2924 *changed |= err;
2925 break;
2926 #endif
2927 default:
2928 WARN_ON(1);
2929 return -EINVAL;
2930 }
2931
2932 return 0;
2933 }
2934
2935 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2936 {
2937 struct ieee80211_local *local = sdata->local;
2938 u32 changed = 0;
2939 int err;
2940
2941 sdata_assert_lock(sdata);
2942 lockdep_assert_held(&local->mtx);
2943 lockdep_assert_held(&local->chanctx_mtx);
2944
2945 /*
2946 * using reservation isn't immediate as it may be deferred until later
2947 * with multi-vif. once reservation is complete it will re-schedule the
2948 * work with no reserved_chanctx so verify chandef to check if it
2949 * completed successfully
2950 */
2951
2952 if (sdata->reserved_chanctx) {
2953 /*
2954 * with multi-vif csa driver may call ieee80211_csa_finish()
2955 * many times while waiting for other interfaces to use their
2956 * reservations
2957 */
2958 if (sdata->reserved_ready)
2959 return 0;
2960
2961 return ieee80211_vif_use_reserved_context(sdata);
2962 }
2963
2964 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2965 &sdata->csa_chandef))
2966 return -EINVAL;
2967
2968 sdata->vif.csa_active = false;
2969
2970 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2971 if (err)
2972 return err;
2973
2974 ieee80211_bss_info_change_notify(sdata, changed);
2975
2976 if (sdata->csa_block_tx) {
2977 ieee80211_wake_vif_queues(local, sdata,
2978 IEEE80211_QUEUE_STOP_REASON_CSA);
2979 sdata->csa_block_tx = false;
2980 }
2981
2982 err = drv_post_channel_switch(sdata);
2983 if (err)
2984 return err;
2985
2986 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2987
2988 return 0;
2989 }
2990
2991 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2992 {
2993 if (__ieee80211_csa_finalize(sdata)) {
2994 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2995 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2996 GFP_KERNEL);
2997 }
2998 }
2999
3000 void ieee80211_csa_finalize_work(struct work_struct *work)
3001 {
3002 struct ieee80211_sub_if_data *sdata =
3003 container_of(work, struct ieee80211_sub_if_data,
3004 csa_finalize_work);
3005 struct ieee80211_local *local = sdata->local;
3006
3007 sdata_lock(sdata);
3008 mutex_lock(&local->mtx);
3009 mutex_lock(&local->chanctx_mtx);
3010
3011 /* AP might have been stopped while waiting for the lock. */
3012 if (!sdata->vif.csa_active)
3013 goto unlock;
3014
3015 if (!ieee80211_sdata_running(sdata))
3016 goto unlock;
3017
3018 ieee80211_csa_finalize(sdata);
3019
3020 unlock:
3021 mutex_unlock(&local->chanctx_mtx);
3022 mutex_unlock(&local->mtx);
3023 sdata_unlock(sdata);
3024 }
3025
3026 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3027 struct cfg80211_csa_settings *params,
3028 u32 *changed)
3029 {
3030 struct ieee80211_csa_settings csa = {};
3031 int err;
3032
3033 switch (sdata->vif.type) {
3034 case NL80211_IFTYPE_AP:
3035 sdata->u.ap.next_beacon =
3036 cfg80211_beacon_dup(&params->beacon_after);
3037 if (!sdata->u.ap.next_beacon)
3038 return -ENOMEM;
3039
3040 /*
3041 * With a count of 0, we don't have to wait for any
3042 * TBTT before switching, so complete the CSA
3043 * immediately. In theory, with a count == 1 we
3044 * should delay the switch until just before the next
3045 * TBTT, but that would complicate things so we switch
3046 * immediately too. If we would delay the switch
3047 * until the next TBTT, we would have to set the probe
3048 * response here.
3049 *
3050 * TODO: A channel switch with count <= 1 without
3051 * sending a CSA action frame is kind of useless,
3052 * because the clients won't know we're changing
3053 * channels. The action frame must be implemented
3054 * either here or in the userspace.
3055 */
3056 if (params->count <= 1)
3057 break;
3058
3059 if ((params->n_counter_offsets_beacon >
3060 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3061 (params->n_counter_offsets_presp >
3062 IEEE80211_MAX_CSA_COUNTERS_NUM))
3063 return -EINVAL;
3064
3065 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3066 csa.counter_offsets_presp = params->counter_offsets_presp;
3067 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3068 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3069 csa.count = params->count;
3070
3071 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3072 if (err < 0) {
3073 kfree(sdata->u.ap.next_beacon);
3074 return err;
3075 }
3076 *changed |= err;
3077
3078 break;
3079 case NL80211_IFTYPE_ADHOC:
3080 if (!sdata->vif.bss_conf.ibss_joined)
3081 return -EINVAL;
3082
3083 if (params->chandef.width != sdata->u.ibss.chandef.width)
3084 return -EINVAL;
3085
3086 switch (params->chandef.width) {
3087 case NL80211_CHAN_WIDTH_40:
3088 if (cfg80211_get_chandef_type(&params->chandef) !=
3089 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3090 return -EINVAL;
3091 case NL80211_CHAN_WIDTH_5:
3092 case NL80211_CHAN_WIDTH_10:
3093 case NL80211_CHAN_WIDTH_20_NOHT:
3094 case NL80211_CHAN_WIDTH_20:
3095 break;
3096 default:
3097 return -EINVAL;
3098 }
3099
3100 /* changes into another band are not supported */
3101 if (sdata->u.ibss.chandef.chan->band !=
3102 params->chandef.chan->band)
3103 return -EINVAL;
3104
3105 /* see comments in the NL80211_IFTYPE_AP block */
3106 if (params->count > 1) {
3107 err = ieee80211_ibss_csa_beacon(sdata, params);
3108 if (err < 0)
3109 return err;
3110 *changed |= err;
3111 }
3112
3113 ieee80211_send_action_csa(sdata, params);
3114
3115 break;
3116 #ifdef CONFIG_MAC80211_MESH
3117 case NL80211_IFTYPE_MESH_POINT: {
3118 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3119
3120 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3121 return -EINVAL;
3122
3123 /* changes into another band are not supported */
3124 if (sdata->vif.bss_conf.chandef.chan->band !=
3125 params->chandef.chan->band)
3126 return -EINVAL;
3127
3128 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3129 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3130 if (!ifmsh->pre_value)
3131 ifmsh->pre_value = 1;
3132 else
3133 ifmsh->pre_value++;
3134 }
3135
3136 /* see comments in the NL80211_IFTYPE_AP block */
3137 if (params->count > 1) {
3138 err = ieee80211_mesh_csa_beacon(sdata, params);
3139 if (err < 0) {
3140 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3141 return err;
3142 }
3143 *changed |= err;
3144 }
3145
3146 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3147 ieee80211_send_action_csa(sdata, params);
3148
3149 break;
3150 }
3151 #endif
3152 default:
3153 return -EOPNOTSUPP;
3154 }
3155
3156 return 0;
3157 }
3158
3159 static int
3160 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3161 struct cfg80211_csa_settings *params)
3162 {
3163 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3164 struct ieee80211_local *local = sdata->local;
3165 struct ieee80211_channel_switch ch_switch;
3166 struct ieee80211_chanctx_conf *conf;
3167 struct ieee80211_chanctx *chanctx;
3168 u32 changed = 0;
3169 int err;
3170
3171 sdata_assert_lock(sdata);
3172 lockdep_assert_held(&local->mtx);
3173
3174 if (!list_empty(&local->roc_list) || local->scanning)
3175 return -EBUSY;
3176
3177 if (sdata->wdev.cac_started)
3178 return -EBUSY;
3179
3180 if (cfg80211_chandef_identical(&params->chandef,
3181 &sdata->vif.bss_conf.chandef))
3182 return -EINVAL;
3183
3184 /* don't allow another channel switch if one is already active. */
3185 if (sdata->vif.csa_active)
3186 return -EBUSY;
3187
3188 mutex_lock(&local->chanctx_mtx);
3189 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3190 lockdep_is_held(&local->chanctx_mtx));
3191 if (!conf) {
3192 err = -EBUSY;
3193 goto out;
3194 }
3195
3196 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3197 if (!chanctx) {
3198 err = -EBUSY;
3199 goto out;
3200 }
3201
3202 ch_switch.timestamp = 0;
3203 ch_switch.device_timestamp = 0;
3204 ch_switch.block_tx = params->block_tx;
3205 ch_switch.chandef = params->chandef;
3206 ch_switch.count = params->count;
3207
3208 err = drv_pre_channel_switch(sdata, &ch_switch);
3209 if (err)
3210 goto out;
3211
3212 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3213 chanctx->mode,
3214 params->radar_required);
3215 if (err)
3216 goto out;
3217
3218 /* if reservation is invalid then this will fail */
3219 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3220 if (err) {
3221 ieee80211_vif_unreserve_chanctx(sdata);
3222 goto out;
3223 }
3224
3225 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3226 if (err) {
3227 ieee80211_vif_unreserve_chanctx(sdata);
3228 goto out;
3229 }
3230
3231 sdata->csa_chandef = params->chandef;
3232 sdata->csa_block_tx = params->block_tx;
3233 sdata->vif.csa_active = true;
3234
3235 if (sdata->csa_block_tx)
3236 ieee80211_stop_vif_queues(local, sdata,
3237 IEEE80211_QUEUE_STOP_REASON_CSA);
3238
3239 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3240 params->count);
3241
3242 if (changed) {
3243 ieee80211_bss_info_change_notify(sdata, changed);
3244 drv_channel_switch_beacon(sdata, &params->chandef);
3245 } else {
3246 /* if the beacon didn't change, we can finalize immediately */
3247 ieee80211_csa_finalize(sdata);
3248 }
3249
3250 out:
3251 mutex_unlock(&local->chanctx_mtx);
3252 return err;
3253 }
3254
3255 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3256 struct cfg80211_csa_settings *params)
3257 {
3258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3259 struct ieee80211_local *local = sdata->local;
3260 int err;
3261
3262 mutex_lock(&local->mtx);
3263 err = __ieee80211_channel_switch(wiphy, dev, params);
3264 mutex_unlock(&local->mtx);
3265
3266 return err;
3267 }
3268
3269 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3270 struct sk_buff *skb, u64 *cookie,
3271 gfp_t gfp)
3272 {
3273 unsigned long spin_flags;
3274 struct sk_buff *ack_skb;
3275 int id;
3276
3277 ack_skb = skb_copy(skb, gfp);
3278 if (!ack_skb)
3279 return ERR_PTR(-ENOMEM);
3280
3281 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3282 id = idr_alloc(&local->ack_status_frames, ack_skb,
3283 1, 0x10000, GFP_ATOMIC);
3284 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3285
3286 if (id < 0) {
3287 kfree_skb(ack_skb);
3288 return ERR_PTR(-ENOMEM);
3289 }
3290
3291 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3292
3293 *cookie = ieee80211_mgmt_tx_cookie(local);
3294 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3295
3296 return ack_skb;
3297 }
3298
3299 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3300 struct cfg80211_mgmt_tx_params *params,
3301 u64 *cookie)
3302 {
3303 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3304 struct ieee80211_local *local = sdata->local;
3305 struct sk_buff *skb, *ack_skb;
3306 struct sta_info *sta;
3307 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3308 bool need_offchan = false;
3309 u32 flags;
3310 int ret;
3311 u8 *data;
3312
3313 if (params->dont_wait_for_ack)
3314 flags = IEEE80211_TX_CTL_NO_ACK;
3315 else
3316 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3317 IEEE80211_TX_CTL_REQ_TX_STATUS;
3318
3319 if (params->no_cck)
3320 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3321
3322 switch (sdata->vif.type) {
3323 case NL80211_IFTYPE_ADHOC:
3324 if (!sdata->vif.bss_conf.ibss_joined)
3325 need_offchan = true;
3326 /* fall through */
3327 #ifdef CONFIG_MAC80211_MESH
3328 case NL80211_IFTYPE_MESH_POINT:
3329 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3330 !sdata->u.mesh.mesh_id_len)
3331 need_offchan = true;
3332 /* fall through */
3333 #endif
3334 case NL80211_IFTYPE_AP:
3335 case NL80211_IFTYPE_AP_VLAN:
3336 case NL80211_IFTYPE_P2P_GO:
3337 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3338 !ieee80211_vif_is_mesh(&sdata->vif) &&
3339 !rcu_access_pointer(sdata->bss->beacon))
3340 need_offchan = true;
3341 if (!ieee80211_is_action(mgmt->frame_control) ||
3342 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3343 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3344 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3345 break;
3346 rcu_read_lock();
3347 sta = sta_info_get(sdata, mgmt->da);
3348 rcu_read_unlock();
3349 if (!sta)
3350 return -ENOLINK;
3351 break;
3352 case NL80211_IFTYPE_STATION:
3353 case NL80211_IFTYPE_P2P_CLIENT:
3354 sdata_lock(sdata);
3355 if (!sdata->u.mgd.associated ||
3356 (params->offchan && params->wait &&
3357 local->ops->remain_on_channel &&
3358 memcmp(sdata->u.mgd.associated->bssid,
3359 mgmt->bssid, ETH_ALEN)))
3360 need_offchan = true;
3361 sdata_unlock(sdata);
3362 break;
3363 case NL80211_IFTYPE_P2P_DEVICE:
3364 need_offchan = true;
3365 break;
3366 default:
3367 return -EOPNOTSUPP;
3368 }
3369
3370 /* configurations requiring offchan cannot work if no channel has been
3371 * specified
3372 */
3373 if (need_offchan && !params->chan)
3374 return -EINVAL;
3375
3376 mutex_lock(&local->mtx);
3377
3378 /* Check if the operating channel is the requested channel */
3379 if (!need_offchan) {
3380 struct ieee80211_chanctx_conf *chanctx_conf;
3381
3382 rcu_read_lock();
3383 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3384
3385 if (chanctx_conf) {
3386 need_offchan = params->chan &&
3387 (params->chan !=
3388 chanctx_conf->def.chan);
3389 } else if (!params->chan) {
3390 ret = -EINVAL;
3391 rcu_read_unlock();
3392 goto out_unlock;
3393 } else {
3394 need_offchan = true;
3395 }
3396 rcu_read_unlock();
3397 }
3398
3399 if (need_offchan && !params->offchan) {
3400 ret = -EBUSY;
3401 goto out_unlock;
3402 }
3403
3404 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3405 if (!skb) {
3406 ret = -ENOMEM;
3407 goto out_unlock;
3408 }
3409 skb_reserve(skb, local->hw.extra_tx_headroom);
3410
3411 data = skb_put(skb, params->len);
3412 memcpy(data, params->buf, params->len);
3413
3414 /* Update CSA counters */
3415 if (sdata->vif.csa_active &&
3416 (sdata->vif.type == NL80211_IFTYPE_AP ||
3417 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3418 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3419 params->n_csa_offsets) {
3420 int i;
3421 struct beacon_data *beacon = NULL;
3422
3423 rcu_read_lock();
3424
3425 if (sdata->vif.type == NL80211_IFTYPE_AP)
3426 beacon = rcu_dereference(sdata->u.ap.beacon);
3427 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3428 beacon = rcu_dereference(sdata->u.ibss.presp);
3429 else if (ieee80211_vif_is_mesh(&sdata->vif))
3430 beacon = rcu_dereference(sdata->u.mesh.beacon);
3431
3432 if (beacon)
3433 for (i = 0; i < params->n_csa_offsets; i++)
3434 data[params->csa_offsets[i]] =
3435 beacon->csa_current_counter;
3436
3437 rcu_read_unlock();
3438 }
3439
3440 IEEE80211_SKB_CB(skb)->flags = flags;
3441
3442 skb->dev = sdata->dev;
3443
3444 if (!params->dont_wait_for_ack) {
3445 /* make a copy to preserve the frame contents
3446 * in case of encryption.
3447 */
3448 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3449 GFP_KERNEL);
3450 if (IS_ERR(ack_skb)) {
3451 ret = PTR_ERR(ack_skb);
3452 kfree_skb(skb);
3453 goto out_unlock;
3454 }
3455 } else {
3456 /* Assign a dummy non-zero cookie, it's not sent to
3457 * userspace in this case but we rely on its value
3458 * internally in the need_offchan case to distinguish
3459 * mgmt-tx from remain-on-channel.
3460 */
3461 *cookie = 0xffffffff;
3462 }
3463
3464 if (!need_offchan) {
3465 ieee80211_tx_skb(sdata, skb);
3466 ret = 0;
3467 goto out_unlock;
3468 }
3469
3470 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3471 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3472 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3473 IEEE80211_SKB_CB(skb)->hw_queue =
3474 local->hw.offchannel_tx_hw_queue;
3475
3476 /* This will handle all kinds of coalescing and immediate TX */
3477 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3478 params->wait, cookie, skb,
3479 IEEE80211_ROC_TYPE_MGMT_TX);
3480 if (ret)
3481 kfree_skb(skb);
3482 out_unlock:
3483 mutex_unlock(&local->mtx);
3484 return ret;
3485 }
3486
3487 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3488 struct wireless_dev *wdev,
3489 u64 cookie)
3490 {
3491 struct ieee80211_local *local = wiphy_priv(wiphy);
3492
3493 return ieee80211_cancel_roc(local, cookie, true);
3494 }
3495
3496 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3497 struct wireless_dev *wdev,
3498 u16 frame_type, bool reg)
3499 {
3500 struct ieee80211_local *local = wiphy_priv(wiphy);
3501 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3502
3503 switch (frame_type) {
3504 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3505 if (reg) {
3506 local->probe_req_reg++;
3507 sdata->vif.probe_req_reg++;
3508 } else {
3509 if (local->probe_req_reg)
3510 local->probe_req_reg--;
3511
3512 if (sdata->vif.probe_req_reg)
3513 sdata->vif.probe_req_reg--;
3514 }
3515
3516 if (!local->open_count)
3517 break;
3518
3519 if (sdata->vif.probe_req_reg == 1)
3520 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3521 FIF_PROBE_REQ);
3522 else if (sdata->vif.probe_req_reg == 0)
3523 drv_config_iface_filter(local, sdata, 0,
3524 FIF_PROBE_REQ);
3525
3526 ieee80211_configure_filter(local);
3527 break;
3528 default:
3529 break;
3530 }
3531 }
3532
3533 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3534 {
3535 struct ieee80211_local *local = wiphy_priv(wiphy);
3536
3537 if (local->started)
3538 return -EOPNOTSUPP;
3539
3540 return drv_set_antenna(local, tx_ant, rx_ant);
3541 }
3542
3543 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3544 {
3545 struct ieee80211_local *local = wiphy_priv(wiphy);
3546
3547 return drv_get_antenna(local, tx_ant, rx_ant);
3548 }
3549
3550 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3551 struct net_device *dev,
3552 struct cfg80211_gtk_rekey_data *data)
3553 {
3554 struct ieee80211_local *local = wiphy_priv(wiphy);
3555 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3556
3557 if (!local->ops->set_rekey_data)
3558 return -EOPNOTSUPP;
3559
3560 drv_set_rekey_data(local, sdata, data);
3561
3562 return 0;
3563 }
3564
3565 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3566 const u8 *peer, u64 *cookie)
3567 {
3568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3569 struct ieee80211_local *local = sdata->local;
3570 struct ieee80211_qos_hdr *nullfunc;
3571 struct sk_buff *skb, *ack_skb;
3572 int size = sizeof(*nullfunc);
3573 __le16 fc;
3574 bool qos;
3575 struct ieee80211_tx_info *info;
3576 struct sta_info *sta;
3577 struct ieee80211_chanctx_conf *chanctx_conf;
3578 enum ieee80211_band band;
3579 int ret;
3580
3581 /* the lock is needed to assign the cookie later */
3582 mutex_lock(&local->mtx);
3583
3584 rcu_read_lock();
3585 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3586 if (WARN_ON(!chanctx_conf)) {
3587 ret = -EINVAL;
3588 goto unlock;
3589 }
3590 band = chanctx_conf->def.chan->band;
3591 sta = sta_info_get_bss(sdata, peer);
3592 if (sta) {
3593 qos = sta->sta.wme;
3594 } else {
3595 ret = -ENOLINK;
3596 goto unlock;
3597 }
3598
3599 if (qos) {
3600 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3601 IEEE80211_STYPE_QOS_NULLFUNC |
3602 IEEE80211_FCTL_FROMDS);
3603 } else {
3604 size -= 2;
3605 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3606 IEEE80211_STYPE_NULLFUNC |
3607 IEEE80211_FCTL_FROMDS);
3608 }
3609
3610 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3611 if (!skb) {
3612 ret = -ENOMEM;
3613 goto unlock;
3614 }
3615
3616 skb->dev = dev;
3617
3618 skb_reserve(skb, local->hw.extra_tx_headroom);
3619
3620 nullfunc = (void *) skb_put(skb, size);
3621 nullfunc->frame_control = fc;
3622 nullfunc->duration_id = 0;
3623 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3624 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3625 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3626 nullfunc->seq_ctrl = 0;
3627
3628 info = IEEE80211_SKB_CB(skb);
3629
3630 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3631 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3632 info->band = band;
3633
3634 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3635 skb->priority = 7;
3636 if (qos)
3637 nullfunc->qos_ctrl = cpu_to_le16(7);
3638
3639 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3640 if (IS_ERR(ack_skb)) {
3641 kfree_skb(skb);
3642 ret = PTR_ERR(ack_skb);
3643 goto unlock;
3644 }
3645
3646 local_bh_disable();
3647 ieee80211_xmit(sdata, sta, skb);
3648 local_bh_enable();
3649
3650 ret = 0;
3651 unlock:
3652 rcu_read_unlock();
3653 mutex_unlock(&local->mtx);
3654
3655 return ret;
3656 }
3657
3658 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3659 struct wireless_dev *wdev,
3660 struct cfg80211_chan_def *chandef)
3661 {
3662 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3663 struct ieee80211_local *local = wiphy_priv(wiphy);
3664 struct ieee80211_chanctx_conf *chanctx_conf;
3665 int ret = -ENODATA;
3666
3667 rcu_read_lock();
3668 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3669 if (chanctx_conf) {
3670 *chandef = sdata->vif.bss_conf.chandef;
3671 ret = 0;
3672 } else if (local->open_count > 0 &&
3673 local->open_count == local->monitors &&
3674 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3675 if (local->use_chanctx)
3676 *chandef = local->monitor_chandef;
3677 else
3678 *chandef = local->_oper_chandef;
3679 ret = 0;
3680 }
3681 rcu_read_unlock();
3682
3683 return ret;
3684 }
3685
3686 #ifdef CONFIG_PM
3687 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3688 {
3689 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3690 }
3691 #endif
3692
3693 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3694 struct net_device *dev,
3695 struct cfg80211_qos_map *qos_map)
3696 {
3697 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3698 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3699
3700 if (qos_map) {
3701 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3702 if (!new_qos_map)
3703 return -ENOMEM;
3704 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3705 } else {
3706 /* A NULL qos_map was passed to disable QoS mapping */
3707 new_qos_map = NULL;
3708 }
3709
3710 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3711 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3712 if (old_qos_map)
3713 kfree_rcu(old_qos_map, rcu_head);
3714
3715 return 0;
3716 }
3717
3718 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3719 struct net_device *dev,
3720 struct cfg80211_chan_def *chandef)
3721 {
3722 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3723 int ret;
3724 u32 changed = 0;
3725
3726 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3727 if (ret == 0)
3728 ieee80211_bss_info_change_notify(sdata, changed);
3729
3730 return ret;
3731 }
3732
3733 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3734 u8 tsid, const u8 *peer, u8 up,
3735 u16 admitted_time)
3736 {
3737 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3738 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3739 int ac = ieee802_1d_to_ac[up];
3740
3741 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3742 return -EOPNOTSUPP;
3743
3744 if (!(sdata->wmm_acm & BIT(up)))
3745 return -EINVAL;
3746
3747 if (ifmgd->tx_tspec[ac].admitted_time)
3748 return -EBUSY;
3749
3750 if (admitted_time) {
3751 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3752 ifmgd->tx_tspec[ac].tsid = tsid;
3753 ifmgd->tx_tspec[ac].up = up;
3754 }
3755
3756 return 0;
3757 }
3758
3759 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3760 u8 tsid, const u8 *peer)
3761 {
3762 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3763 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3764 struct ieee80211_local *local = wiphy_priv(wiphy);
3765 int ac;
3766
3767 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3768 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3769
3770 /* skip unused entries */
3771 if (!tx_tspec->admitted_time)
3772 continue;
3773
3774 if (tx_tspec->tsid != tsid)
3775 continue;
3776
3777 /* due to this new packets will be reassigned to non-ACM ACs */
3778 tx_tspec->up = -1;
3779
3780 /* Make sure that all packets have been sent to avoid to
3781 * restore the QoS params on packets that are still on the
3782 * queues.
3783 */
3784 synchronize_net();
3785 ieee80211_flush_queues(local, sdata, false);
3786
3787 /* restore the normal QoS parameters
3788 * (unconditionally to avoid races)
3789 */
3790 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3791 tx_tspec->downgraded = false;
3792 ieee80211_sta_handle_tspec_ac_params(sdata);
3793
3794 /* finally clear all the data */
3795 memset(tx_tspec, 0, sizeof(*tx_tspec));
3796
3797 return 0;
3798 }
3799
3800 return -ENOENT;
3801 }
3802
3803 const struct cfg80211_ops mac80211_config_ops = {
3804 .add_virtual_intf = ieee80211_add_iface,
3805 .del_virtual_intf = ieee80211_del_iface,
3806 .change_virtual_intf = ieee80211_change_iface,
3807 .start_p2p_device = ieee80211_start_p2p_device,
3808 .stop_p2p_device = ieee80211_stop_p2p_device,
3809 .add_key = ieee80211_add_key,
3810 .del_key = ieee80211_del_key,
3811 .get_key = ieee80211_get_key,
3812 .set_default_key = ieee80211_config_default_key,
3813 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3814 .start_ap = ieee80211_start_ap,
3815 .change_beacon = ieee80211_change_beacon,
3816 .stop_ap = ieee80211_stop_ap,
3817 .add_station = ieee80211_add_station,
3818 .del_station = ieee80211_del_station,
3819 .change_station = ieee80211_change_station,
3820 .get_station = ieee80211_get_station,
3821 .dump_station = ieee80211_dump_station,
3822 .dump_survey = ieee80211_dump_survey,
3823 #ifdef CONFIG_MAC80211_MESH
3824 .add_mpath = ieee80211_add_mpath,
3825 .del_mpath = ieee80211_del_mpath,
3826 .change_mpath = ieee80211_change_mpath,
3827 .get_mpath = ieee80211_get_mpath,
3828 .dump_mpath = ieee80211_dump_mpath,
3829 .get_mpp = ieee80211_get_mpp,
3830 .dump_mpp = ieee80211_dump_mpp,
3831 .update_mesh_config = ieee80211_update_mesh_config,
3832 .get_mesh_config = ieee80211_get_mesh_config,
3833 .join_mesh = ieee80211_join_mesh,
3834 .leave_mesh = ieee80211_leave_mesh,
3835 #endif
3836 .join_ocb = ieee80211_join_ocb,
3837 .leave_ocb = ieee80211_leave_ocb,
3838 .change_bss = ieee80211_change_bss,
3839 .set_txq_params = ieee80211_set_txq_params,
3840 .set_monitor_channel = ieee80211_set_monitor_channel,
3841 .suspend = ieee80211_suspend,
3842 .resume = ieee80211_resume,
3843 .scan = ieee80211_scan,
3844 .sched_scan_start = ieee80211_sched_scan_start,
3845 .sched_scan_stop = ieee80211_sched_scan_stop,
3846 .auth = ieee80211_auth,
3847 .assoc = ieee80211_assoc,
3848 .deauth = ieee80211_deauth,
3849 .disassoc = ieee80211_disassoc,
3850 .join_ibss = ieee80211_join_ibss,
3851 .leave_ibss = ieee80211_leave_ibss,
3852 .set_mcast_rate = ieee80211_set_mcast_rate,
3853 .set_wiphy_params = ieee80211_set_wiphy_params,
3854 .set_tx_power = ieee80211_set_tx_power,
3855 .get_tx_power = ieee80211_get_tx_power,
3856 .set_wds_peer = ieee80211_set_wds_peer,
3857 .rfkill_poll = ieee80211_rfkill_poll,
3858 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3859 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3860 .set_power_mgmt = ieee80211_set_power_mgmt,
3861 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3862 .remain_on_channel = ieee80211_remain_on_channel,
3863 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3864 .mgmt_tx = ieee80211_mgmt_tx,
3865 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3866 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3867 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3868 .set_antenna = ieee80211_set_antenna,
3869 .get_antenna = ieee80211_get_antenna,
3870 .set_rekey_data = ieee80211_set_rekey_data,
3871 .tdls_oper = ieee80211_tdls_oper,
3872 .tdls_mgmt = ieee80211_tdls_mgmt,
3873 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3874 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3875 .probe_client = ieee80211_probe_client,
3876 .set_noack_map = ieee80211_set_noack_map,
3877 #ifdef CONFIG_PM
3878 .set_wakeup = ieee80211_set_wakeup,
3879 #endif
3880 .get_channel = ieee80211_cfg_get_channel,
3881 .start_radar_detection = ieee80211_start_radar_detection,
3882 .channel_switch = ieee80211_channel_switch,
3883 .set_qos_map = ieee80211_set_qos_map,
3884 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3885 .add_tx_ts = ieee80211_add_tx_ts,
3886 .del_tx_ts = ieee80211_del_tx_ts,
3887 };
Linux kernel - Deliverables
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