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[mirror_ubuntu-bionic-kernel.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 "cfg.h"
21 #include "rate.h"
22 #include "mesh.h"
23 #include "wme.h"
24
25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
26 const char *name,
27 unsigned char name_assign_type,
28 enum nl80211_iftype type,
29 u32 *flags,
30 struct vif_params *params)
31 {
32 struct ieee80211_local *local = wiphy_priv(wiphy);
33 struct wireless_dev *wdev;
34 struct ieee80211_sub_if_data *sdata;
35 int err;
36
37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
38 if (err)
39 return ERR_PTR(err);
40
41 if (type == NL80211_IFTYPE_MONITOR && flags) {
42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
43 sdata->u.mntr_flags = *flags;
44 }
45
46 return wdev;
47 }
48
49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
50 {
51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
52
53 return 0;
54 }
55
56 static int ieee80211_change_iface(struct wiphy *wiphy,
57 struct net_device *dev,
58 enum nl80211_iftype type, u32 *flags,
59 struct vif_params *params)
60 {
61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
62 int ret;
63
64 ret = ieee80211_if_change_type(sdata, type);
65 if (ret)
66 return ret;
67
68 if (type == NL80211_IFTYPE_AP_VLAN &&
69 params && params->use_4addr == 0)
70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
71 else if (type == NL80211_IFTYPE_STATION &&
72 params && params->use_4addr >= 0)
73 sdata->u.mgd.use_4addr = params->use_4addr;
74
75 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
76 struct ieee80211_local *local = sdata->local;
77
78 if (ieee80211_sdata_running(sdata)) {
79 u32 mask = MONITOR_FLAG_COOK_FRAMES |
80 MONITOR_FLAG_ACTIVE;
81
82 /*
83 * Prohibit MONITOR_FLAG_COOK_FRAMES and
84 * MONITOR_FLAG_ACTIVE to be changed while the
85 * interface is up.
86 * Else we would need to add a lot of cruft
87 * to update everything:
88 * cooked_mntrs, monitor and all fif_* counters
89 * reconfigure hardware
90 */
91 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
92 return -EBUSY;
93
94 ieee80211_adjust_monitor_flags(sdata, -1);
95 sdata->u.mntr_flags = *flags;
96 ieee80211_adjust_monitor_flags(sdata, 1);
97
98 ieee80211_configure_filter(local);
99 } else {
100 /*
101 * Because the interface is down, ieee80211_do_stop
102 * and ieee80211_do_open take care of "everything"
103 * mentioned in the comment above.
104 */
105 sdata->u.mntr_flags = *flags;
106 }
107 }
108
109 return 0;
110 }
111
112 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
116 int ret;
117
118 mutex_lock(&sdata->local->chanctx_mtx);
119 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
120 mutex_unlock(&sdata->local->chanctx_mtx);
121 if (ret < 0)
122 return ret;
123
124 return ieee80211_do_open(wdev, true);
125 }
126
127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
128 struct wireless_dev *wdev)
129 {
130 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
131 }
132
133 static int ieee80211_set_noack_map(struct wiphy *wiphy,
134 struct net_device *dev,
135 u16 noack_map)
136 {
137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
138
139 sdata->noack_map = noack_map;
140
141 ieee80211_check_fast_xmit_iface(sdata);
142
143 return 0;
144 }
145
146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
147 u8 key_idx, bool pairwise, const u8 *mac_addr,
148 struct key_params *params)
149 {
150 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
151 struct ieee80211_local *local = sdata->local;
152 struct sta_info *sta = NULL;
153 const struct ieee80211_cipher_scheme *cs = NULL;
154 struct ieee80211_key *key;
155 int err;
156
157 if (!ieee80211_sdata_running(sdata))
158 return -ENETDOWN;
159
160 /* reject WEP and TKIP keys if WEP failed to initialize */
161 switch (params->cipher) {
162 case WLAN_CIPHER_SUITE_WEP40:
163 case WLAN_CIPHER_SUITE_TKIP:
164 case WLAN_CIPHER_SUITE_WEP104:
165 if (IS_ERR(local->wep_tx_tfm))
166 return -EINVAL;
167 break;
168 case WLAN_CIPHER_SUITE_CCMP:
169 case WLAN_CIPHER_SUITE_CCMP_256:
170 case WLAN_CIPHER_SUITE_AES_CMAC:
171 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
172 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
173 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
174 case WLAN_CIPHER_SUITE_GCMP:
175 case WLAN_CIPHER_SUITE_GCMP_256:
176 break;
177 default:
178 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
179 break;
180 }
181
182 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
183 params->key, params->seq_len, params->seq,
184 cs);
185 if (IS_ERR(key))
186 return PTR_ERR(key);
187
188 if (pairwise)
189 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
190
191 mutex_lock(&local->sta_mtx);
192
193 if (mac_addr) {
194 if (ieee80211_vif_is_mesh(&sdata->vif))
195 sta = sta_info_get(sdata, mac_addr);
196 else
197 sta = sta_info_get_bss(sdata, mac_addr);
198 /*
199 * The ASSOC test makes sure the driver is ready to
200 * receive the key. When wpa_supplicant has roamed
201 * using FT, it attempts to set the key before
202 * association has completed, this rejects that attempt
203 * so it will set the key again after association.
204 *
205 * TODO: accept the key if we have a station entry and
206 * add it to the device after the station.
207 */
208 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
209 ieee80211_key_free_unused(key);
210 err = -ENOENT;
211 goto out_unlock;
212 }
213 }
214
215 switch (sdata->vif.type) {
216 case NL80211_IFTYPE_STATION:
217 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
218 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
219 break;
220 case NL80211_IFTYPE_AP:
221 case NL80211_IFTYPE_AP_VLAN:
222 /* Keys without a station are used for TX only */
223 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
224 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
225 break;
226 case NL80211_IFTYPE_ADHOC:
227 /* no MFP (yet) */
228 break;
229 case NL80211_IFTYPE_MESH_POINT:
230 #ifdef CONFIG_MAC80211_MESH
231 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
232 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
233 break;
234 #endif
235 case NL80211_IFTYPE_WDS:
236 case NL80211_IFTYPE_MONITOR:
237 case NL80211_IFTYPE_P2P_DEVICE:
238 case NL80211_IFTYPE_UNSPECIFIED:
239 case NUM_NL80211_IFTYPES:
240 case NL80211_IFTYPE_P2P_CLIENT:
241 case NL80211_IFTYPE_P2P_GO:
242 case NL80211_IFTYPE_OCB:
243 /* shouldn't happen */
244 WARN_ON_ONCE(1);
245 break;
246 }
247
248 if (sta)
249 sta->cipher_scheme = cs;
250
251 err = ieee80211_key_link(key, sdata, sta);
252
253 out_unlock:
254 mutex_unlock(&local->sta_mtx);
255
256 return err;
257 }
258
259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
260 u8 key_idx, bool pairwise, const u8 *mac_addr)
261 {
262 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
263 struct ieee80211_local *local = sdata->local;
264 struct sta_info *sta;
265 struct ieee80211_key *key = NULL;
266 int ret;
267
268 mutex_lock(&local->sta_mtx);
269 mutex_lock(&local->key_mtx);
270
271 if (mac_addr) {
272 ret = -ENOENT;
273
274 sta = sta_info_get_bss(sdata, mac_addr);
275 if (!sta)
276 goto out_unlock;
277
278 if (pairwise)
279 key = key_mtx_dereference(local, sta->ptk[key_idx]);
280 else
281 key = key_mtx_dereference(local, sta->gtk[key_idx]);
282 } else
283 key = key_mtx_dereference(local, sdata->keys[key_idx]);
284
285 if (!key) {
286 ret = -ENOENT;
287 goto out_unlock;
288 }
289
290 ieee80211_key_free(key, true);
291
292 ret = 0;
293 out_unlock:
294 mutex_unlock(&local->key_mtx);
295 mutex_unlock(&local->sta_mtx);
296
297 return ret;
298 }
299
300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
301 u8 key_idx, bool pairwise, const u8 *mac_addr,
302 void *cookie,
303 void (*callback)(void *cookie,
304 struct key_params *params))
305 {
306 struct ieee80211_sub_if_data *sdata;
307 struct sta_info *sta = NULL;
308 u8 seq[6] = {0};
309 struct key_params params;
310 struct ieee80211_key *key = NULL;
311 u64 pn64;
312 u32 iv32;
313 u16 iv16;
314 int err = -ENOENT;
315 struct ieee80211_key_seq kseq = {};
316
317 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
318
319 rcu_read_lock();
320
321 if (mac_addr) {
322 sta = sta_info_get_bss(sdata, mac_addr);
323 if (!sta)
324 goto out;
325
326 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
327 key = rcu_dereference(sta->ptk[key_idx]);
328 else if (!pairwise &&
329 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
330 key = rcu_dereference(sta->gtk[key_idx]);
331 } else
332 key = rcu_dereference(sdata->keys[key_idx]);
333
334 if (!key)
335 goto out;
336
337 memset(&params, 0, sizeof(params));
338
339 params.cipher = key->conf.cipher;
340
341 switch (key->conf.cipher) {
342 case WLAN_CIPHER_SUITE_TKIP:
343 iv32 = key->u.tkip.tx.iv32;
344 iv16 = key->u.tkip.tx.iv16;
345
346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
348 drv_get_key_seq(sdata->local, key, &kseq);
349 iv32 = kseq.tkip.iv32;
350 iv16 = kseq.tkip.iv16;
351 }
352
353 seq[0] = iv16 & 0xff;
354 seq[1] = (iv16 >> 8) & 0xff;
355 seq[2] = iv32 & 0xff;
356 seq[3] = (iv32 >> 8) & 0xff;
357 seq[4] = (iv32 >> 16) & 0xff;
358 seq[5] = (iv32 >> 24) & 0xff;
359 params.seq = seq;
360 params.seq_len = 6;
361 break;
362 case WLAN_CIPHER_SUITE_CCMP:
363 case WLAN_CIPHER_SUITE_CCMP_256:
364 case WLAN_CIPHER_SUITE_AES_CMAC:
365 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
367 offsetof(typeof(kseq), aes_cmac));
368 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
369 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
371 offsetof(typeof(kseq), aes_gmac));
372 case WLAN_CIPHER_SUITE_GCMP:
373 case WLAN_CIPHER_SUITE_GCMP_256:
374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
375 offsetof(typeof(kseq), gcmp));
376
377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
379 drv_get_key_seq(sdata->local, key, &kseq);
380 memcpy(seq, kseq.ccmp.pn, 6);
381 } else {
382 pn64 = atomic64_read(&key->conf.tx_pn);
383 seq[0] = pn64;
384 seq[1] = pn64 >> 8;
385 seq[2] = pn64 >> 16;
386 seq[3] = pn64 >> 24;
387 seq[4] = pn64 >> 32;
388 seq[5] = pn64 >> 40;
389 }
390 params.seq = seq;
391 params.seq_len = 6;
392 break;
393 default:
394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
395 break;
396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
397 break;
398 drv_get_key_seq(sdata->local, key, &kseq);
399 params.seq = kseq.hw.seq;
400 params.seq_len = kseq.hw.seq_len;
401 break;
402 }
403
404 params.key = key->conf.key;
405 params.key_len = key->conf.keylen;
406
407 callback(cookie, &params);
408 err = 0;
409
410 out:
411 rcu_read_unlock();
412 return err;
413 }
414
415 static int ieee80211_config_default_key(struct wiphy *wiphy,
416 struct net_device *dev,
417 u8 key_idx, bool uni,
418 bool multi)
419 {
420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
421
422 ieee80211_set_default_key(sdata, key_idx, uni, multi);
423
424 return 0;
425 }
426
427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
428 struct net_device *dev,
429 u8 key_idx)
430 {
431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
432
433 ieee80211_set_default_mgmt_key(sdata, key_idx);
434
435 return 0;
436 }
437
438 void sta_set_rate_info_tx(struct sta_info *sta,
439 const struct ieee80211_tx_rate *rate,
440 struct rate_info *rinfo)
441 {
442 rinfo->flags = 0;
443 if (rate->flags & IEEE80211_TX_RC_MCS) {
444 rinfo->flags |= RATE_INFO_FLAGS_MCS;
445 rinfo->mcs = rate->idx;
446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
449 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
450 } else {
451 struct ieee80211_supported_band *sband;
452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
453 u16 brate;
454
455 sband = sta->local->hw.wiphy->bands[
456 ieee80211_get_sdata_band(sta->sdata)];
457 brate = sband->bitrates[rate->idx].bitrate;
458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
459 }
460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
461 rinfo->bw = RATE_INFO_BW_40;
462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
463 rinfo->bw = RATE_INFO_BW_80;
464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
465 rinfo->bw = RATE_INFO_BW_160;
466 else
467 rinfo->bw = RATE_INFO_BW_20;
468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
470 }
471
472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
473 {
474 rinfo->flags = 0;
475
476 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
477 rinfo->flags |= RATE_INFO_FLAGS_MCS;
478 rinfo->mcs = sta->last_rx_rate_idx;
479 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
480 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
481 rinfo->nss = sta->last_rx_rate_vht_nss;
482 rinfo->mcs = sta->last_rx_rate_idx;
483 } else {
484 struct ieee80211_supported_band *sband;
485 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
486 u16 brate;
487
488 sband = sta->local->hw.wiphy->bands[
489 ieee80211_get_sdata_band(sta->sdata)];
490 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
491 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
492 }
493
494 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
495 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
496
497 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ)
498 rinfo->bw = RATE_INFO_BW_5;
499 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ)
500 rinfo->bw = RATE_INFO_BW_10;
501 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
502 rinfo->bw = RATE_INFO_BW_40;
503 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
504 rinfo->bw = RATE_INFO_BW_80;
505 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
506 rinfo->bw = RATE_INFO_BW_160;
507 else
508 rinfo->bw = RATE_INFO_BW_20;
509 }
510
511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
512 int idx, u8 *mac, struct station_info *sinfo)
513 {
514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
515 struct ieee80211_local *local = sdata->local;
516 struct sta_info *sta;
517 int ret = -ENOENT;
518
519 mutex_lock(&local->sta_mtx);
520
521 sta = sta_info_get_by_idx(sdata, idx);
522 if (sta) {
523 ret = 0;
524 memcpy(mac, sta->sta.addr, ETH_ALEN);
525 sta_set_sinfo(sta, sinfo);
526 }
527
528 mutex_unlock(&local->sta_mtx);
529
530 return ret;
531 }
532
533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
534 int idx, struct survey_info *survey)
535 {
536 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
537
538 return drv_get_survey(local, idx, survey);
539 }
540
541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
542 const u8 *mac, struct station_info *sinfo)
543 {
544 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
545 struct ieee80211_local *local = sdata->local;
546 struct sta_info *sta;
547 int ret = -ENOENT;
548
549 mutex_lock(&local->sta_mtx);
550
551 sta = sta_info_get_bss(sdata, mac);
552 if (sta) {
553 ret = 0;
554 sta_set_sinfo(sta, sinfo);
555 }
556
557 mutex_unlock(&local->sta_mtx);
558
559 return ret;
560 }
561
562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
563 struct cfg80211_chan_def *chandef)
564 {
565 struct ieee80211_local *local = wiphy_priv(wiphy);
566 struct ieee80211_sub_if_data *sdata;
567 int ret = 0;
568
569 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
570 return 0;
571
572 mutex_lock(&local->mtx);
573 mutex_lock(&local->iflist_mtx);
574 if (local->use_chanctx) {
575 sdata = rcu_dereference_protected(
576 local->monitor_sdata,
577 lockdep_is_held(&local->iflist_mtx));
578 if (sdata) {
579 ieee80211_vif_release_channel(sdata);
580 ret = ieee80211_vif_use_channel(sdata, chandef,
581 IEEE80211_CHANCTX_EXCLUSIVE);
582 }
583 } else if (local->open_count == local->monitors) {
584 local->_oper_chandef = *chandef;
585 ieee80211_hw_config(local, 0);
586 }
587
588 if (ret == 0)
589 local->monitor_chandef = *chandef;
590 mutex_unlock(&local->iflist_mtx);
591 mutex_unlock(&local->mtx);
592
593 return ret;
594 }
595
596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
597 const u8 *resp, size_t resp_len,
598 const struct ieee80211_csa_settings *csa)
599 {
600 struct probe_resp *new, *old;
601
602 if (!resp || !resp_len)
603 return 1;
604
605 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
606
607 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
608 if (!new)
609 return -ENOMEM;
610
611 new->len = resp_len;
612 memcpy(new->data, resp, resp_len);
613
614 if (csa)
615 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
616 csa->n_counter_offsets_presp *
617 sizeof(new->csa_counter_offsets[0]));
618
619 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
620 if (old)
621 kfree_rcu(old, rcu_head);
622
623 return 0;
624 }
625
626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
627 struct cfg80211_beacon_data *params,
628 const struct ieee80211_csa_settings *csa)
629 {
630 struct beacon_data *new, *old;
631 int new_head_len, new_tail_len;
632 int size, err;
633 u32 changed = BSS_CHANGED_BEACON;
634
635 old = sdata_dereference(sdata->u.ap.beacon, sdata);
636
637
638 /* Need to have a beacon head if we don't have one yet */
639 if (!params->head && !old)
640 return -EINVAL;
641
642 /* new or old head? */
643 if (params->head)
644 new_head_len = params->head_len;
645 else
646 new_head_len = old->head_len;
647
648 /* new or old tail? */
649 if (params->tail || !old)
650 /* params->tail_len will be zero for !params->tail */
651 new_tail_len = params->tail_len;
652 else
653 new_tail_len = old->tail_len;
654
655 size = sizeof(*new) + new_head_len + new_tail_len;
656
657 new = kzalloc(size, GFP_KERNEL);
658 if (!new)
659 return -ENOMEM;
660
661 /* start filling the new info now */
662
663 /*
664 * pointers go into the block we allocated,
665 * memory is | beacon_data | head | tail |
666 */
667 new->head = ((u8 *) new) + sizeof(*new);
668 new->tail = new->head + new_head_len;
669 new->head_len = new_head_len;
670 new->tail_len = new_tail_len;
671
672 if (csa) {
673 new->csa_current_counter = csa->count;
674 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
675 csa->n_counter_offsets_beacon *
676 sizeof(new->csa_counter_offsets[0]));
677 }
678
679 /* copy in head */
680 if (params->head)
681 memcpy(new->head, params->head, new_head_len);
682 else
683 memcpy(new->head, old->head, new_head_len);
684
685 /* copy in optional tail */
686 if (params->tail)
687 memcpy(new->tail, params->tail, new_tail_len);
688 else
689 if (old)
690 memcpy(new->tail, old->tail, new_tail_len);
691
692 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
693 params->probe_resp_len, csa);
694 if (err < 0)
695 return err;
696 if (err == 0)
697 changed |= BSS_CHANGED_AP_PROBE_RESP;
698
699 rcu_assign_pointer(sdata->u.ap.beacon, new);
700
701 if (old)
702 kfree_rcu(old, rcu_head);
703
704 return changed;
705 }
706
707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
708 struct cfg80211_ap_settings *params)
709 {
710 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
711 struct ieee80211_local *local = sdata->local;
712 struct beacon_data *old;
713 struct ieee80211_sub_if_data *vlan;
714 u32 changed = BSS_CHANGED_BEACON_INT |
715 BSS_CHANGED_BEACON_ENABLED |
716 BSS_CHANGED_BEACON |
717 BSS_CHANGED_SSID |
718 BSS_CHANGED_P2P_PS |
719 BSS_CHANGED_TXPOWER;
720 int err;
721
722 old = sdata_dereference(sdata->u.ap.beacon, sdata);
723 if (old)
724 return -EALREADY;
725
726 switch (params->smps_mode) {
727 case NL80211_SMPS_OFF:
728 sdata->smps_mode = IEEE80211_SMPS_OFF;
729 break;
730 case NL80211_SMPS_STATIC:
731 sdata->smps_mode = IEEE80211_SMPS_STATIC;
732 break;
733 case NL80211_SMPS_DYNAMIC:
734 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
735 break;
736 default:
737 return -EINVAL;
738 }
739 sdata->needed_rx_chains = sdata->local->rx_chains;
740
741 mutex_lock(&local->mtx);
742 err = ieee80211_vif_use_channel(sdata, &params->chandef,
743 IEEE80211_CHANCTX_SHARED);
744 if (!err)
745 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
746 mutex_unlock(&local->mtx);
747 if (err)
748 return err;
749
750 /*
751 * Apply control port protocol, this allows us to
752 * not encrypt dynamic WEP control frames.
753 */
754 sdata->control_port_protocol = params->crypto.control_port_ethertype;
755 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
756 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
757 &params->crypto,
758 sdata->vif.type);
759
760 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
761 vlan->control_port_protocol =
762 params->crypto.control_port_ethertype;
763 vlan->control_port_no_encrypt =
764 params->crypto.control_port_no_encrypt;
765 vlan->encrypt_headroom =
766 ieee80211_cs_headroom(sdata->local,
767 &params->crypto,
768 vlan->vif.type);
769 }
770
771 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
772 sdata->vif.bss_conf.dtim_period = params->dtim_period;
773 sdata->vif.bss_conf.enable_beacon = true;
774
775 sdata->vif.bss_conf.ssid_len = params->ssid_len;
776 if (params->ssid_len)
777 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
778 params->ssid_len);
779 sdata->vif.bss_conf.hidden_ssid =
780 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
781
782 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
783 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
784 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
785 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
786 if (params->p2p_opp_ps)
787 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
788 IEEE80211_P2P_OPPPS_ENABLE_BIT;
789
790 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
791 if (err < 0) {
792 ieee80211_vif_release_channel(sdata);
793 return err;
794 }
795 changed |= err;
796
797 err = drv_start_ap(sdata->local, sdata);
798 if (err) {
799 old = sdata_dereference(sdata->u.ap.beacon, sdata);
800
801 if (old)
802 kfree_rcu(old, rcu_head);
803 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
804 ieee80211_vif_release_channel(sdata);
805 return err;
806 }
807
808 ieee80211_recalc_dtim(local, sdata);
809 ieee80211_bss_info_change_notify(sdata, changed);
810
811 netif_carrier_on(dev);
812 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
813 netif_carrier_on(vlan->dev);
814
815 return 0;
816 }
817
818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
819 struct cfg80211_beacon_data *params)
820 {
821 struct ieee80211_sub_if_data *sdata;
822 struct beacon_data *old;
823 int err;
824
825 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
826 sdata_assert_lock(sdata);
827
828 /* don't allow changing the beacon while CSA is in place - offset
829 * of channel switch counter may change
830 */
831 if (sdata->vif.csa_active)
832 return -EBUSY;
833
834 old = sdata_dereference(sdata->u.ap.beacon, sdata);
835 if (!old)
836 return -ENOENT;
837
838 err = ieee80211_assign_beacon(sdata, params, NULL);
839 if (err < 0)
840 return err;
841 ieee80211_bss_info_change_notify(sdata, err);
842 return 0;
843 }
844
845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
846 {
847 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
848 struct ieee80211_sub_if_data *vlan;
849 struct ieee80211_local *local = sdata->local;
850 struct beacon_data *old_beacon;
851 struct probe_resp *old_probe_resp;
852 struct cfg80211_chan_def chandef;
853
854 sdata_assert_lock(sdata);
855
856 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
857 if (!old_beacon)
858 return -ENOENT;
859 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
860
861 /* abort any running channel switch */
862 mutex_lock(&local->mtx);
863 sdata->vif.csa_active = false;
864 if (sdata->csa_block_tx) {
865 ieee80211_wake_vif_queues(local, sdata,
866 IEEE80211_QUEUE_STOP_REASON_CSA);
867 sdata->csa_block_tx = false;
868 }
869
870 mutex_unlock(&local->mtx);
871
872 kfree(sdata->u.ap.next_beacon);
873 sdata->u.ap.next_beacon = NULL;
874
875 /* turn off carrier for this interface and dependent VLANs */
876 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
877 netif_carrier_off(vlan->dev);
878 netif_carrier_off(dev);
879
880 /* remove beacon and probe response */
881 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
882 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
883 kfree_rcu(old_beacon, rcu_head);
884 if (old_probe_resp)
885 kfree_rcu(old_probe_resp, rcu_head);
886 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
887
888 __sta_info_flush(sdata, true);
889 ieee80211_free_keys(sdata, true);
890
891 sdata->vif.bss_conf.enable_beacon = false;
892 sdata->vif.bss_conf.ssid_len = 0;
893 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
894 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
895
896 if (sdata->wdev.cac_started) {
897 chandef = sdata->vif.bss_conf.chandef;
898 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
899 cfg80211_cac_event(sdata->dev, &chandef,
900 NL80211_RADAR_CAC_ABORTED,
901 GFP_KERNEL);
902 }
903
904 drv_stop_ap(sdata->local, sdata);
905
906 /* free all potentially still buffered bcast frames */
907 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
908 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
909
910 mutex_lock(&local->mtx);
911 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
912 ieee80211_vif_release_channel(sdata);
913 mutex_unlock(&local->mtx);
914
915 return 0;
916 }
917
918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
919 struct iapp_layer2_update {
920 u8 da[ETH_ALEN]; /* broadcast */
921 u8 sa[ETH_ALEN]; /* STA addr */
922 __be16 len; /* 6 */
923 u8 dsap; /* 0 */
924 u8 ssap; /* 0 */
925 u8 control;
926 u8 xid_info[3];
927 } __packed;
928
929 static void ieee80211_send_layer2_update(struct sta_info *sta)
930 {
931 struct iapp_layer2_update *msg;
932 struct sk_buff *skb;
933
934 /* Send Level 2 Update Frame to update forwarding tables in layer 2
935 * bridge devices */
936
937 skb = dev_alloc_skb(sizeof(*msg));
938 if (!skb)
939 return;
940 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
941
942 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
943 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
944
945 eth_broadcast_addr(msg->da);
946 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
947 msg->len = htons(6);
948 msg->dsap = 0;
949 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
950 msg->control = 0xaf; /* XID response lsb.1111F101.
951 * F=0 (no poll command; unsolicited frame) */
952 msg->xid_info[0] = 0x81; /* XID format identifier */
953 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
954 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
955
956 skb->dev = sta->sdata->dev;
957 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
958 memset(skb->cb, 0, sizeof(skb->cb));
959 netif_rx_ni(skb);
960 }
961
962 static int sta_apply_auth_flags(struct ieee80211_local *local,
963 struct sta_info *sta,
964 u32 mask, u32 set)
965 {
966 int ret;
967
968 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
969 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
970 !test_sta_flag(sta, WLAN_STA_AUTH)) {
971 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
972 if (ret)
973 return ret;
974 }
975
976 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
977 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
978 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
979 /*
980 * When peer becomes associated, init rate control as
981 * well. Some drivers require rate control initialized
982 * before drv_sta_state() is called.
983 */
984 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
985 rate_control_rate_init(sta);
986
987 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
988 if (ret)
989 return ret;
990 }
991
992 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
993 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
994 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
995 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
996 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
997 else
998 ret = 0;
999 if (ret)
1000 return ret;
1001 }
1002
1003 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1004 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1005 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1006 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1007 if (ret)
1008 return ret;
1009 }
1010
1011 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1012 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1013 test_sta_flag(sta, WLAN_STA_AUTH)) {
1014 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1015 if (ret)
1016 return ret;
1017 }
1018
1019 return 0;
1020 }
1021
1022 static void sta_apply_mesh_params(struct ieee80211_local *local,
1023 struct sta_info *sta,
1024 struct station_parameters *params)
1025 {
1026 #ifdef CONFIG_MAC80211_MESH
1027 struct ieee80211_sub_if_data *sdata = sta->sdata;
1028 u32 changed = 0;
1029
1030 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1031 switch (params->plink_state) {
1032 case NL80211_PLINK_ESTAB:
1033 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1034 changed = mesh_plink_inc_estab_count(sdata);
1035 sta->mesh->plink_state = params->plink_state;
1036
1037 ieee80211_mps_sta_status_update(sta);
1038 changed |= ieee80211_mps_set_sta_local_pm(sta,
1039 sdata->u.mesh.mshcfg.power_mode);
1040 break;
1041 case NL80211_PLINK_LISTEN:
1042 case NL80211_PLINK_BLOCKED:
1043 case NL80211_PLINK_OPN_SNT:
1044 case NL80211_PLINK_OPN_RCVD:
1045 case NL80211_PLINK_CNF_RCVD:
1046 case NL80211_PLINK_HOLDING:
1047 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1048 changed = mesh_plink_dec_estab_count(sdata);
1049 sta->mesh->plink_state = params->plink_state;
1050
1051 ieee80211_mps_sta_status_update(sta);
1052 changed |= ieee80211_mps_set_sta_local_pm(sta,
1053 NL80211_MESH_POWER_UNKNOWN);
1054 break;
1055 default:
1056 /* nothing */
1057 break;
1058 }
1059 }
1060
1061 switch (params->plink_action) {
1062 case NL80211_PLINK_ACTION_NO_ACTION:
1063 /* nothing */
1064 break;
1065 case NL80211_PLINK_ACTION_OPEN:
1066 changed |= mesh_plink_open(sta);
1067 break;
1068 case NL80211_PLINK_ACTION_BLOCK:
1069 changed |= mesh_plink_block(sta);
1070 break;
1071 }
1072
1073 if (params->local_pm)
1074 changed |= ieee80211_mps_set_sta_local_pm(sta,
1075 params->local_pm);
1076
1077 ieee80211_mbss_info_change_notify(sdata, changed);
1078 #endif
1079 }
1080
1081 static int sta_apply_parameters(struct ieee80211_local *local,
1082 struct sta_info *sta,
1083 struct station_parameters *params)
1084 {
1085 int ret = 0;
1086 struct ieee80211_supported_band *sband;
1087 struct ieee80211_sub_if_data *sdata = sta->sdata;
1088 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1089 u32 mask, set;
1090
1091 sband = local->hw.wiphy->bands[band];
1092
1093 mask = params->sta_flags_mask;
1094 set = params->sta_flags_set;
1095
1096 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1097 /*
1098 * In mesh mode, ASSOCIATED isn't part of the nl80211
1099 * API but must follow AUTHENTICATED for driver state.
1100 */
1101 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1102 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1103 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1104 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1105 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1106 /*
1107 * TDLS -- everything follows authorized, but
1108 * only becoming authorized is possible, not
1109 * going back
1110 */
1111 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1112 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1113 BIT(NL80211_STA_FLAG_ASSOCIATED);
1114 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1115 BIT(NL80211_STA_FLAG_ASSOCIATED);
1116 }
1117 }
1118
1119 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1120 local->hw.queues >= IEEE80211_NUM_ACS)
1121 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1122
1123 /* auth flags will be set later for TDLS stations */
1124 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1125 ret = sta_apply_auth_flags(local, sta, mask, set);
1126 if (ret)
1127 return ret;
1128 }
1129
1130 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1131 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1132 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1133 else
1134 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1135 }
1136
1137 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1138 if (set & BIT(NL80211_STA_FLAG_MFP))
1139 set_sta_flag(sta, WLAN_STA_MFP);
1140 else
1141 clear_sta_flag(sta, WLAN_STA_MFP);
1142 }
1143
1144 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1145 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1146 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1147 else
1148 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1149 }
1150
1151 /* mark TDLS channel switch support, if the AP allows it */
1152 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1153 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1154 params->ext_capab_len >= 4 &&
1155 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1156 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1157
1158 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1159 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1160 params->ext_capab_len >= 8 &&
1161 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1162 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1163
1164 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1165 sta->sta.uapsd_queues = params->uapsd_queues;
1166 sta->sta.max_sp = params->max_sp;
1167 }
1168
1169 /*
1170 * cfg80211 validates this (1-2007) and allows setting the AID
1171 * only when creating a new station entry
1172 */
1173 if (params->aid)
1174 sta->sta.aid = params->aid;
1175
1176 /*
1177 * Some of the following updates would be racy if called on an
1178 * existing station, via ieee80211_change_station(). However,
1179 * all such changes are rejected by cfg80211 except for updates
1180 * changing the supported rates on an existing but not yet used
1181 * TDLS peer.
1182 */
1183
1184 if (params->listen_interval >= 0)
1185 sta->listen_interval = params->listen_interval;
1186
1187 if (params->supported_rates) {
1188 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1189 sband, params->supported_rates,
1190 params->supported_rates_len,
1191 &sta->sta.supp_rates[band]);
1192 }
1193
1194 if (params->ht_capa)
1195 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1196 params->ht_capa, sta);
1197
1198 if (params->vht_capa)
1199 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1200 params->vht_capa, sta);
1201
1202 if (params->opmode_notif_used) {
1203 /* returned value is only needed for rc update, but the
1204 * rc isn't initialized here yet, so ignore it
1205 */
1206 __ieee80211_vht_handle_opmode(sdata, sta,
1207 params->opmode_notif,
1208 band, false);
1209 }
1210
1211 if (ieee80211_vif_is_mesh(&sdata->vif))
1212 sta_apply_mesh_params(local, sta, params);
1213
1214 /* set the STA state after all sta info from usermode has been set */
1215 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1216 ret = sta_apply_auth_flags(local, sta, mask, set);
1217 if (ret)
1218 return ret;
1219 }
1220
1221 return 0;
1222 }
1223
1224 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1225 const u8 *mac,
1226 struct station_parameters *params)
1227 {
1228 struct ieee80211_local *local = wiphy_priv(wiphy);
1229 struct sta_info *sta;
1230 struct ieee80211_sub_if_data *sdata;
1231 int err;
1232 int layer2_update;
1233
1234 if (params->vlan) {
1235 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1236
1237 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1238 sdata->vif.type != NL80211_IFTYPE_AP)
1239 return -EINVAL;
1240 } else
1241 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1242
1243 if (ether_addr_equal(mac, sdata->vif.addr))
1244 return -EINVAL;
1245
1246 if (is_multicast_ether_addr(mac))
1247 return -EINVAL;
1248
1249 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1250 if (!sta)
1251 return -ENOMEM;
1252
1253 /*
1254 * defaults -- if userspace wants something else we'll
1255 * change it accordingly in sta_apply_parameters()
1256 */
1257 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1258 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1259 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1260 } else {
1261 sta->sta.tdls = true;
1262 }
1263
1264 err = sta_apply_parameters(local, sta, params);
1265 if (err) {
1266 sta_info_free(local, sta);
1267 return err;
1268 }
1269
1270 /*
1271 * for TDLS, rate control should be initialized only when
1272 * rates are known and station is marked authorized
1273 */
1274 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1275 rate_control_rate_init(sta);
1276
1277 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1278 sdata->vif.type == NL80211_IFTYPE_AP;
1279
1280 err = sta_info_insert_rcu(sta);
1281 if (err) {
1282 rcu_read_unlock();
1283 return err;
1284 }
1285
1286 if (layer2_update)
1287 ieee80211_send_layer2_update(sta);
1288
1289 rcu_read_unlock();
1290
1291 return 0;
1292 }
1293
1294 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1295 struct station_del_parameters *params)
1296 {
1297 struct ieee80211_sub_if_data *sdata;
1298
1299 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1300
1301 if (params->mac)
1302 return sta_info_destroy_addr_bss(sdata, params->mac);
1303
1304 sta_info_flush(sdata);
1305 return 0;
1306 }
1307
1308 static int ieee80211_change_station(struct wiphy *wiphy,
1309 struct net_device *dev, const u8 *mac,
1310 struct station_parameters *params)
1311 {
1312 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1313 struct ieee80211_local *local = wiphy_priv(wiphy);
1314 struct sta_info *sta;
1315 struct ieee80211_sub_if_data *vlansdata;
1316 enum cfg80211_station_type statype;
1317 int err;
1318
1319 mutex_lock(&local->sta_mtx);
1320
1321 sta = sta_info_get_bss(sdata, mac);
1322 if (!sta) {
1323 err = -ENOENT;
1324 goto out_err;
1325 }
1326
1327 switch (sdata->vif.type) {
1328 case NL80211_IFTYPE_MESH_POINT:
1329 if (sdata->u.mesh.user_mpm)
1330 statype = CFG80211_STA_MESH_PEER_USER;
1331 else
1332 statype = CFG80211_STA_MESH_PEER_KERNEL;
1333 break;
1334 case NL80211_IFTYPE_ADHOC:
1335 statype = CFG80211_STA_IBSS;
1336 break;
1337 case NL80211_IFTYPE_STATION:
1338 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1339 statype = CFG80211_STA_AP_STA;
1340 break;
1341 }
1342 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1343 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1344 else
1345 statype = CFG80211_STA_TDLS_PEER_SETUP;
1346 break;
1347 case NL80211_IFTYPE_AP:
1348 case NL80211_IFTYPE_AP_VLAN:
1349 statype = CFG80211_STA_AP_CLIENT;
1350 break;
1351 default:
1352 err = -EOPNOTSUPP;
1353 goto out_err;
1354 }
1355
1356 err = cfg80211_check_station_change(wiphy, params, statype);
1357 if (err)
1358 goto out_err;
1359
1360 if (params->vlan && params->vlan != sta->sdata->dev) {
1361 bool prev_4addr = false;
1362 bool new_4addr = false;
1363
1364 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1365
1366 if (params->vlan->ieee80211_ptr->use_4addr) {
1367 if (vlansdata->u.vlan.sta) {
1368 err = -EBUSY;
1369 goto out_err;
1370 }
1371
1372 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1373 new_4addr = true;
1374 }
1375
1376 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1377 sta->sdata->u.vlan.sta) {
1378 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1379 prev_4addr = true;
1380 }
1381
1382 sta->sdata = vlansdata;
1383 ieee80211_check_fast_xmit(sta);
1384
1385 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1386 prev_4addr != new_4addr) {
1387 if (new_4addr)
1388 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1389 else
1390 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1391 }
1392
1393 ieee80211_send_layer2_update(sta);
1394 }
1395
1396 err = sta_apply_parameters(local, sta, params);
1397 if (err)
1398 goto out_err;
1399
1400 mutex_unlock(&local->sta_mtx);
1401
1402 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1403 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1404 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1405 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1406 sta_info_tx_streams(sta) != 1) {
1407 ht_dbg(sta->sdata,
1408 "%pM just authorized and MIMO capable - update SMPS\n",
1409 sta->sta.addr);
1410 ieee80211_send_smps_action(sta->sdata,
1411 sta->sdata->bss->req_smps,
1412 sta->sta.addr,
1413 sta->sdata->vif.bss_conf.bssid);
1414 }
1415
1416 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1417 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1418 ieee80211_recalc_ps(local, -1);
1419 ieee80211_recalc_ps_vif(sdata);
1420 }
1421
1422 return 0;
1423 out_err:
1424 mutex_unlock(&local->sta_mtx);
1425 return err;
1426 }
1427
1428 #ifdef CONFIG_MAC80211_MESH
1429 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 const u8 *dst, const u8 *next_hop)
1431 {
1432 struct ieee80211_sub_if_data *sdata;
1433 struct mesh_path *mpath;
1434 struct sta_info *sta;
1435
1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1437
1438 rcu_read_lock();
1439 sta = sta_info_get(sdata, next_hop);
1440 if (!sta) {
1441 rcu_read_unlock();
1442 return -ENOENT;
1443 }
1444
1445 mpath = mesh_path_add(sdata, dst);
1446 if (IS_ERR(mpath)) {
1447 rcu_read_unlock();
1448 return PTR_ERR(mpath);
1449 }
1450
1451 mesh_path_fix_nexthop(mpath, sta);
1452
1453 rcu_read_unlock();
1454 return 0;
1455 }
1456
1457 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1458 const u8 *dst)
1459 {
1460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1461
1462 if (dst)
1463 return mesh_path_del(sdata, dst);
1464
1465 mesh_path_flush_by_iface(sdata);
1466 return 0;
1467 }
1468
1469 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1470 const u8 *dst, const u8 *next_hop)
1471 {
1472 struct ieee80211_sub_if_data *sdata;
1473 struct mesh_path *mpath;
1474 struct sta_info *sta;
1475
1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478 rcu_read_lock();
1479
1480 sta = sta_info_get(sdata, next_hop);
1481 if (!sta) {
1482 rcu_read_unlock();
1483 return -ENOENT;
1484 }
1485
1486 mpath = mesh_path_lookup(sdata, dst);
1487 if (!mpath) {
1488 rcu_read_unlock();
1489 return -ENOENT;
1490 }
1491
1492 mesh_path_fix_nexthop(mpath, sta);
1493
1494 rcu_read_unlock();
1495 return 0;
1496 }
1497
1498 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1499 struct mpath_info *pinfo)
1500 {
1501 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1502
1503 if (next_hop_sta)
1504 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1505 else
1506 eth_zero_addr(next_hop);
1507
1508 memset(pinfo, 0, sizeof(*pinfo));
1509
1510 pinfo->generation = mesh_paths_generation;
1511
1512 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1513 MPATH_INFO_SN |
1514 MPATH_INFO_METRIC |
1515 MPATH_INFO_EXPTIME |
1516 MPATH_INFO_DISCOVERY_TIMEOUT |
1517 MPATH_INFO_DISCOVERY_RETRIES |
1518 MPATH_INFO_FLAGS;
1519
1520 pinfo->frame_qlen = mpath->frame_queue.qlen;
1521 pinfo->sn = mpath->sn;
1522 pinfo->metric = mpath->metric;
1523 if (time_before(jiffies, mpath->exp_time))
1524 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1525 pinfo->discovery_timeout =
1526 jiffies_to_msecs(mpath->discovery_timeout);
1527 pinfo->discovery_retries = mpath->discovery_retries;
1528 if (mpath->flags & MESH_PATH_ACTIVE)
1529 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1530 if (mpath->flags & MESH_PATH_RESOLVING)
1531 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1532 if (mpath->flags & MESH_PATH_SN_VALID)
1533 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1534 if (mpath->flags & MESH_PATH_FIXED)
1535 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1536 if (mpath->flags & MESH_PATH_RESOLVED)
1537 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1538 }
1539
1540 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1541 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1542
1543 {
1544 struct ieee80211_sub_if_data *sdata;
1545 struct mesh_path *mpath;
1546
1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549 rcu_read_lock();
1550 mpath = mesh_path_lookup(sdata, dst);
1551 if (!mpath) {
1552 rcu_read_unlock();
1553 return -ENOENT;
1554 }
1555 memcpy(dst, mpath->dst, ETH_ALEN);
1556 mpath_set_pinfo(mpath, next_hop, pinfo);
1557 rcu_read_unlock();
1558 return 0;
1559 }
1560
1561 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1562 int idx, u8 *dst, u8 *next_hop,
1563 struct mpath_info *pinfo)
1564 {
1565 struct ieee80211_sub_if_data *sdata;
1566 struct mesh_path *mpath;
1567
1568 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1569
1570 rcu_read_lock();
1571 mpath = mesh_path_lookup_by_idx(sdata, idx);
1572 if (!mpath) {
1573 rcu_read_unlock();
1574 return -ENOENT;
1575 }
1576 memcpy(dst, mpath->dst, ETH_ALEN);
1577 mpath_set_pinfo(mpath, next_hop, pinfo);
1578 rcu_read_unlock();
1579 return 0;
1580 }
1581
1582 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1583 struct mpath_info *pinfo)
1584 {
1585 memset(pinfo, 0, sizeof(*pinfo));
1586 memcpy(mpp, mpath->mpp, ETH_ALEN);
1587
1588 pinfo->generation = mpp_paths_generation;
1589 }
1590
1591 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1592 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1593
1594 {
1595 struct ieee80211_sub_if_data *sdata;
1596 struct mesh_path *mpath;
1597
1598 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1599
1600 rcu_read_lock();
1601 mpath = mpp_path_lookup(sdata, dst);
1602 if (!mpath) {
1603 rcu_read_unlock();
1604 return -ENOENT;
1605 }
1606 memcpy(dst, mpath->dst, ETH_ALEN);
1607 mpp_set_pinfo(mpath, mpp, pinfo);
1608 rcu_read_unlock();
1609 return 0;
1610 }
1611
1612 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1613 int idx, u8 *dst, u8 *mpp,
1614 struct mpath_info *pinfo)
1615 {
1616 struct ieee80211_sub_if_data *sdata;
1617 struct mesh_path *mpath;
1618
1619 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1620
1621 rcu_read_lock();
1622 mpath = mpp_path_lookup_by_idx(sdata, idx);
1623 if (!mpath) {
1624 rcu_read_unlock();
1625 return -ENOENT;
1626 }
1627 memcpy(dst, mpath->dst, ETH_ALEN);
1628 mpp_set_pinfo(mpath, mpp, pinfo);
1629 rcu_read_unlock();
1630 return 0;
1631 }
1632
1633 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1634 struct net_device *dev,
1635 struct mesh_config *conf)
1636 {
1637 struct ieee80211_sub_if_data *sdata;
1638 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1639
1640 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1641 return 0;
1642 }
1643
1644 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1645 {
1646 return (mask >> (parm-1)) & 0x1;
1647 }
1648
1649 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1650 const struct mesh_setup *setup)
1651 {
1652 u8 *new_ie;
1653 const u8 *old_ie;
1654 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1655 struct ieee80211_sub_if_data, u.mesh);
1656
1657 /* allocate information elements */
1658 new_ie = NULL;
1659 old_ie = ifmsh->ie;
1660
1661 if (setup->ie_len) {
1662 new_ie = kmemdup(setup->ie, setup->ie_len,
1663 GFP_KERNEL);
1664 if (!new_ie)
1665 return -ENOMEM;
1666 }
1667 ifmsh->ie_len = setup->ie_len;
1668 ifmsh->ie = new_ie;
1669 kfree(old_ie);
1670
1671 /* now copy the rest of the setup parameters */
1672 ifmsh->mesh_id_len = setup->mesh_id_len;
1673 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1674 ifmsh->mesh_sp_id = setup->sync_method;
1675 ifmsh->mesh_pp_id = setup->path_sel_proto;
1676 ifmsh->mesh_pm_id = setup->path_metric;
1677 ifmsh->user_mpm = setup->user_mpm;
1678 ifmsh->mesh_auth_id = setup->auth_id;
1679 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1680 if (setup->is_authenticated)
1681 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1682 if (setup->is_secure)
1683 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1684
1685 /* mcast rate setting in Mesh Node */
1686 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1687 sizeof(setup->mcast_rate));
1688 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1689
1690 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1691 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1692
1693 return 0;
1694 }
1695
1696 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1697 struct net_device *dev, u32 mask,
1698 const struct mesh_config *nconf)
1699 {
1700 struct mesh_config *conf;
1701 struct ieee80211_sub_if_data *sdata;
1702 struct ieee80211_if_mesh *ifmsh;
1703
1704 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1705 ifmsh = &sdata->u.mesh;
1706
1707 /* Set the config options which we are interested in setting */
1708 conf = &(sdata->u.mesh.mshcfg);
1709 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1710 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1711 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1712 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1713 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1714 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1715 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1716 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1717 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1718 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1719 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1720 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1721 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1722 conf->element_ttl = nconf->element_ttl;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1724 if (ifmsh->user_mpm)
1725 return -EBUSY;
1726 conf->auto_open_plinks = nconf->auto_open_plinks;
1727 }
1728 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1729 conf->dot11MeshNbrOffsetMaxNeighbor =
1730 nconf->dot11MeshNbrOffsetMaxNeighbor;
1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1732 conf->dot11MeshHWMPmaxPREQretries =
1733 nconf->dot11MeshHWMPmaxPREQretries;
1734 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1735 conf->path_refresh_time = nconf->path_refresh_time;
1736 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1737 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1739 conf->dot11MeshHWMPactivePathTimeout =
1740 nconf->dot11MeshHWMPactivePathTimeout;
1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1742 conf->dot11MeshHWMPpreqMinInterval =
1743 nconf->dot11MeshHWMPpreqMinInterval;
1744 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1745 conf->dot11MeshHWMPperrMinInterval =
1746 nconf->dot11MeshHWMPperrMinInterval;
1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1748 mask))
1749 conf->dot11MeshHWMPnetDiameterTraversalTime =
1750 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1752 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1753 ieee80211_mesh_root_setup(ifmsh);
1754 }
1755 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1756 /* our current gate announcement implementation rides on root
1757 * announcements, so require this ifmsh to also be a root node
1758 * */
1759 if (nconf->dot11MeshGateAnnouncementProtocol &&
1760 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1761 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1762 ieee80211_mesh_root_setup(ifmsh);
1763 }
1764 conf->dot11MeshGateAnnouncementProtocol =
1765 nconf->dot11MeshGateAnnouncementProtocol;
1766 }
1767 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1768 conf->dot11MeshHWMPRannInterval =
1769 nconf->dot11MeshHWMPRannInterval;
1770 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1771 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1772 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1773 /* our RSSI threshold implementation is supported only for
1774 * devices that report signal in dBm.
1775 */
1776 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1777 return -ENOTSUPP;
1778 conf->rssi_threshold = nconf->rssi_threshold;
1779 }
1780 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1781 conf->ht_opmode = nconf->ht_opmode;
1782 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1783 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1784 }
1785 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1786 conf->dot11MeshHWMPactivePathToRootTimeout =
1787 nconf->dot11MeshHWMPactivePathToRootTimeout;
1788 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1789 conf->dot11MeshHWMProotInterval =
1790 nconf->dot11MeshHWMProotInterval;
1791 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1792 conf->dot11MeshHWMPconfirmationInterval =
1793 nconf->dot11MeshHWMPconfirmationInterval;
1794 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1795 conf->power_mode = nconf->power_mode;
1796 ieee80211_mps_local_status_update(sdata);
1797 }
1798 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1799 conf->dot11MeshAwakeWindowDuration =
1800 nconf->dot11MeshAwakeWindowDuration;
1801 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1802 conf->plink_timeout = nconf->plink_timeout;
1803 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1804 return 0;
1805 }
1806
1807 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1808 const struct mesh_config *conf,
1809 const struct mesh_setup *setup)
1810 {
1811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1812 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1813 int err;
1814
1815 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1816 err = copy_mesh_setup(ifmsh, setup);
1817 if (err)
1818 return err;
1819
1820 /* can mesh use other SMPS modes? */
1821 sdata->smps_mode = IEEE80211_SMPS_OFF;
1822 sdata->needed_rx_chains = sdata->local->rx_chains;
1823
1824 mutex_lock(&sdata->local->mtx);
1825 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1826 IEEE80211_CHANCTX_SHARED);
1827 mutex_unlock(&sdata->local->mtx);
1828 if (err)
1829 return err;
1830
1831 return ieee80211_start_mesh(sdata);
1832 }
1833
1834 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1835 {
1836 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1837
1838 ieee80211_stop_mesh(sdata);
1839 mutex_lock(&sdata->local->mtx);
1840 ieee80211_vif_release_channel(sdata);
1841 mutex_unlock(&sdata->local->mtx);
1842
1843 return 0;
1844 }
1845 #endif
1846
1847 static int ieee80211_change_bss(struct wiphy *wiphy,
1848 struct net_device *dev,
1849 struct bss_parameters *params)
1850 {
1851 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1852 enum ieee80211_band band;
1853 u32 changed = 0;
1854
1855 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1856 return -ENOENT;
1857
1858 band = ieee80211_get_sdata_band(sdata);
1859
1860 if (params->use_cts_prot >= 0) {
1861 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1862 changed |= BSS_CHANGED_ERP_CTS_PROT;
1863 }
1864 if (params->use_short_preamble >= 0) {
1865 sdata->vif.bss_conf.use_short_preamble =
1866 params->use_short_preamble;
1867 changed |= BSS_CHANGED_ERP_PREAMBLE;
1868 }
1869
1870 if (!sdata->vif.bss_conf.use_short_slot &&
1871 band == IEEE80211_BAND_5GHZ) {
1872 sdata->vif.bss_conf.use_short_slot = true;
1873 changed |= BSS_CHANGED_ERP_SLOT;
1874 }
1875
1876 if (params->use_short_slot_time >= 0) {
1877 sdata->vif.bss_conf.use_short_slot =
1878 params->use_short_slot_time;
1879 changed |= BSS_CHANGED_ERP_SLOT;
1880 }
1881
1882 if (params->basic_rates) {
1883 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1884 wiphy->bands[band],
1885 params->basic_rates,
1886 params->basic_rates_len,
1887 &sdata->vif.bss_conf.basic_rates);
1888 changed |= BSS_CHANGED_BASIC_RATES;
1889 }
1890
1891 if (params->ap_isolate >= 0) {
1892 if (params->ap_isolate)
1893 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1894 else
1895 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1896 }
1897
1898 if (params->ht_opmode >= 0) {
1899 sdata->vif.bss_conf.ht_operation_mode =
1900 (u16) params->ht_opmode;
1901 changed |= BSS_CHANGED_HT;
1902 }
1903
1904 if (params->p2p_ctwindow >= 0) {
1905 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1906 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1907 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1908 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1909 changed |= BSS_CHANGED_P2P_PS;
1910 }
1911
1912 if (params->p2p_opp_ps > 0) {
1913 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1914 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1915 changed |= BSS_CHANGED_P2P_PS;
1916 } else if (params->p2p_opp_ps == 0) {
1917 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1918 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1919 changed |= BSS_CHANGED_P2P_PS;
1920 }
1921
1922 ieee80211_bss_info_change_notify(sdata, changed);
1923
1924 return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928 struct net_device *dev,
1929 struct ieee80211_txq_params *params)
1930 {
1931 struct ieee80211_local *local = wiphy_priv(wiphy);
1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933 struct ieee80211_tx_queue_params p;
1934
1935 if (!local->ops->conf_tx)
1936 return -EOPNOTSUPP;
1937
1938 if (local->hw.queues < IEEE80211_NUM_ACS)
1939 return -EOPNOTSUPP;
1940
1941 memset(&p, 0, sizeof(p));
1942 p.aifs = params->aifs;
1943 p.cw_max = params->cwmax;
1944 p.cw_min = params->cwmin;
1945 p.txop = params->txop;
1946
1947 /*
1948 * Setting tx queue params disables u-apsd because it's only
1949 * called in master mode.
1950 */
1951 p.uapsd = false;
1952
1953 sdata->tx_conf[params->ac] = p;
1954 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955 wiphy_debug(local->hw.wiphy,
1956 "failed to set TX queue parameters for AC %d\n",
1957 params->ac);
1958 return -EINVAL;
1959 }
1960
1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963 return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968 struct cfg80211_wowlan *wowlan)
1969 {
1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975 return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983 struct cfg80211_scan_request *req)
1984 {
1985 struct ieee80211_sub_if_data *sdata;
1986
1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990 case NL80211_IFTYPE_STATION:
1991 case NL80211_IFTYPE_ADHOC:
1992 case NL80211_IFTYPE_MESH_POINT:
1993 case NL80211_IFTYPE_P2P_CLIENT:
1994 case NL80211_IFTYPE_P2P_DEVICE:
1995 break;
1996 case NL80211_IFTYPE_P2P_GO:
1997 if (sdata->local->ops->hw_scan)
1998 break;
1999 /*
2000 * FIXME: implement NoA while scanning in software,
2001 * for now fall through to allow scanning only when
2002 * beaconing hasn't been configured yet
2003 */
2004 case NL80211_IFTYPE_AP:
2005 /*
2006 * If the scan has been forced (and the driver supports
2007 * forcing), don't care about being beaconing already.
2008 * This will create problems to the attached stations (e.g. all
2009 * the frames sent while scanning on other channel will be
2010 * lost)
2011 */
2012 if (sdata->u.ap.beacon &&
2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014 !(req->flags & NL80211_SCAN_FLAG_AP)))
2015 return -EOPNOTSUPP;
2016 break;
2017 default:
2018 return -EOPNOTSUPP;
2019 }
2020
2021 return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static int
2025 ieee80211_sched_scan_start(struct wiphy *wiphy,
2026 struct net_device *dev,
2027 struct cfg80211_sched_scan_request *req)
2028 {
2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031 if (!sdata->local->ops->sched_scan_start)
2032 return -EOPNOTSUPP;
2033
2034 return ieee80211_request_sched_scan_start(sdata, req);
2035 }
2036
2037 static int
2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042 if (!sdata->local->ops->sched_scan_stop)
2043 return -EOPNOTSUPP;
2044
2045 return ieee80211_request_sched_scan_stop(sdata);
2046 }
2047
2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2049 struct cfg80211_auth_request *req)
2050 {
2051 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 }
2053
2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2055 struct cfg80211_assoc_request *req)
2056 {
2057 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061 struct cfg80211_deauth_request *req)
2062 {
2063 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067 struct cfg80211_disassoc_request *req)
2068 {
2069 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2073 struct cfg80211_ibss_params *params)
2074 {
2075 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 }
2077
2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2084 struct ocb_setup *setup)
2085 {
2086 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2087 }
2088
2089 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2090 {
2091 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2092 }
2093
2094 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2095 int rate[IEEE80211_NUM_BANDS])
2096 {
2097 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2098
2099 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2100 sizeof(int) * IEEE80211_NUM_BANDS);
2101
2102 return 0;
2103 }
2104
2105 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2106 {
2107 struct ieee80211_local *local = wiphy_priv(wiphy);
2108 int err;
2109
2110 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2111 ieee80211_check_fast_xmit_all(local);
2112
2113 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2114
2115 if (err) {
2116 ieee80211_check_fast_xmit_all(local);
2117 return err;
2118 }
2119 }
2120
2121 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2122 (changed & WIPHY_PARAM_DYN_ACK)) {
2123 s16 coverage_class;
2124
2125 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2126 wiphy->coverage_class : -1;
2127 err = drv_set_coverage_class(local, coverage_class);
2128
2129 if (err)
2130 return err;
2131 }
2132
2133 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2134 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2135
2136 if (err)
2137 return err;
2138 }
2139
2140 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2141 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2142 return -EINVAL;
2143 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2144 }
2145 if (changed & WIPHY_PARAM_RETRY_LONG) {
2146 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2147 return -EINVAL;
2148 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2149 }
2150 if (changed &
2151 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2152 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2153
2154 return 0;
2155 }
2156
2157 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2158 struct wireless_dev *wdev,
2159 enum nl80211_tx_power_setting type, int mbm)
2160 {
2161 struct ieee80211_local *local = wiphy_priv(wiphy);
2162 struct ieee80211_sub_if_data *sdata;
2163 enum nl80211_tx_power_setting txp_type = type;
2164 bool update_txp_type = false;
2165
2166 if (wdev) {
2167 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2168
2169 switch (type) {
2170 case NL80211_TX_POWER_AUTOMATIC:
2171 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2172 txp_type = NL80211_TX_POWER_LIMITED;
2173 break;
2174 case NL80211_TX_POWER_LIMITED:
2175 case NL80211_TX_POWER_FIXED:
2176 if (mbm < 0 || (mbm % 100))
2177 return -EOPNOTSUPP;
2178 sdata->user_power_level = MBM_TO_DBM(mbm);
2179 break;
2180 }
2181
2182 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2183 update_txp_type = true;
2184 sdata->vif.bss_conf.txpower_type = txp_type;
2185 }
2186
2187 ieee80211_recalc_txpower(sdata, update_txp_type);
2188
2189 return 0;
2190 }
2191
2192 switch (type) {
2193 case NL80211_TX_POWER_AUTOMATIC:
2194 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2195 txp_type = NL80211_TX_POWER_LIMITED;
2196 break;
2197 case NL80211_TX_POWER_LIMITED:
2198 case NL80211_TX_POWER_FIXED:
2199 if (mbm < 0 || (mbm % 100))
2200 return -EOPNOTSUPP;
2201 local->user_power_level = MBM_TO_DBM(mbm);
2202 break;
2203 }
2204
2205 mutex_lock(&local->iflist_mtx);
2206 list_for_each_entry(sdata, &local->interfaces, list) {
2207 sdata->user_power_level = local->user_power_level;
2208 if (txp_type != sdata->vif.bss_conf.txpower_type)
2209 update_txp_type = true;
2210 sdata->vif.bss_conf.txpower_type = txp_type;
2211 }
2212 list_for_each_entry(sdata, &local->interfaces, list)
2213 ieee80211_recalc_txpower(sdata, update_txp_type);
2214 mutex_unlock(&local->iflist_mtx);
2215
2216 return 0;
2217 }
2218
2219 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2220 struct wireless_dev *wdev,
2221 int *dbm)
2222 {
2223 struct ieee80211_local *local = wiphy_priv(wiphy);
2224 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2225
2226 if (local->ops->get_txpower)
2227 return drv_get_txpower(local, sdata, dbm);
2228
2229 if (!local->use_chanctx)
2230 *dbm = local->hw.conf.power_level;
2231 else
2232 *dbm = sdata->vif.bss_conf.txpower;
2233
2234 return 0;
2235 }
2236
2237 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2238 const u8 *addr)
2239 {
2240 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2241
2242 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2243
2244 return 0;
2245 }
2246
2247 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2248 {
2249 struct ieee80211_local *local = wiphy_priv(wiphy);
2250
2251 drv_rfkill_poll(local);
2252 }
2253
2254 #ifdef CONFIG_NL80211_TESTMODE
2255 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2256 struct wireless_dev *wdev,
2257 void *data, int len)
2258 {
2259 struct ieee80211_local *local = wiphy_priv(wiphy);
2260 struct ieee80211_vif *vif = NULL;
2261
2262 if (!local->ops->testmode_cmd)
2263 return -EOPNOTSUPP;
2264
2265 if (wdev) {
2266 struct ieee80211_sub_if_data *sdata;
2267
2268 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2269 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2270 vif = &sdata->vif;
2271 }
2272
2273 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2274 }
2275
2276 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2277 struct sk_buff *skb,
2278 struct netlink_callback *cb,
2279 void *data, int len)
2280 {
2281 struct ieee80211_local *local = wiphy_priv(wiphy);
2282
2283 if (!local->ops->testmode_dump)
2284 return -EOPNOTSUPP;
2285
2286 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2287 }
2288 #endif
2289
2290 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2291 enum ieee80211_smps_mode smps_mode)
2292 {
2293 struct sta_info *sta;
2294 enum ieee80211_smps_mode old_req;
2295
2296 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2297 return -EINVAL;
2298
2299 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2300 return 0;
2301
2302 old_req = sdata->u.ap.req_smps;
2303 sdata->u.ap.req_smps = smps_mode;
2304
2305 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2306 if (old_req == smps_mode ||
2307 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2308 return 0;
2309
2310 /* If no associated stations, there's no need to do anything */
2311 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2312 sdata->smps_mode = smps_mode;
2313 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2314 return 0;
2315 }
2316
2317 ht_dbg(sdata,
2318 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2319 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2320
2321 mutex_lock(&sdata->local->sta_mtx);
2322 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2323 /*
2324 * Only stations associated to our AP and
2325 * associated VLANs
2326 */
2327 if (sta->sdata->bss != &sdata->u.ap)
2328 continue;
2329
2330 /* This station doesn't support MIMO - skip it */
2331 if (sta_info_tx_streams(sta) == 1)
2332 continue;
2333
2334 /*
2335 * Don't wake up a STA just to send the action frame
2336 * unless we are getting more restrictive.
2337 */
2338 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2339 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2340 smps_mode)) {
2341 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2342 sta->sta.addr);
2343 continue;
2344 }
2345
2346 /*
2347 * If the STA is not authorized, wait until it gets
2348 * authorized and the action frame will be sent then.
2349 */
2350 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2351 continue;
2352
2353 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2354 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2355 sdata->vif.bss_conf.bssid);
2356 }
2357 mutex_unlock(&sdata->local->sta_mtx);
2358
2359 sdata->smps_mode = smps_mode;
2360 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2361
2362 return 0;
2363 }
2364
2365 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2366 enum ieee80211_smps_mode smps_mode)
2367 {
2368 const u8 *ap;
2369 enum ieee80211_smps_mode old_req;
2370 int err;
2371 struct sta_info *sta;
2372 bool tdls_peer_found = false;
2373
2374 lockdep_assert_held(&sdata->wdev.mtx);
2375
2376 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2377 return -EINVAL;
2378
2379 old_req = sdata->u.mgd.req_smps;
2380 sdata->u.mgd.req_smps = smps_mode;
2381
2382 if (old_req == smps_mode &&
2383 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2384 return 0;
2385
2386 /*
2387 * If not associated, or current association is not an HT
2388 * association, there's no need to do anything, just store
2389 * the new value until we associate.
2390 */
2391 if (!sdata->u.mgd.associated ||
2392 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2393 return 0;
2394
2395 ap = sdata->u.mgd.associated->bssid;
2396
2397 rcu_read_lock();
2398 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2399 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2400 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2401 continue;
2402
2403 tdls_peer_found = true;
2404 break;
2405 }
2406 rcu_read_unlock();
2407
2408 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2409 if (tdls_peer_found || !sdata->u.mgd.powersave)
2410 smps_mode = IEEE80211_SMPS_OFF;
2411 else
2412 smps_mode = IEEE80211_SMPS_DYNAMIC;
2413 }
2414
2415 /* send SM PS frame to AP */
2416 err = ieee80211_send_smps_action(sdata, smps_mode,
2417 ap, ap);
2418 if (err)
2419 sdata->u.mgd.req_smps = old_req;
2420 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2421 ieee80211_teardown_tdls_peers(sdata);
2422
2423 return err;
2424 }
2425
2426 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2427 bool enabled, int timeout)
2428 {
2429 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2430 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2431
2432 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2433 return -EOPNOTSUPP;
2434
2435 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2436 return -EOPNOTSUPP;
2437
2438 if (enabled == sdata->u.mgd.powersave &&
2439 timeout == local->dynamic_ps_forced_timeout)
2440 return 0;
2441
2442 sdata->u.mgd.powersave = enabled;
2443 local->dynamic_ps_forced_timeout = timeout;
2444
2445 /* no change, but if automatic follow powersave */
2446 sdata_lock(sdata);
2447 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2448 sdata_unlock(sdata);
2449
2450 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2451 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2452
2453 ieee80211_recalc_ps(local, -1);
2454 ieee80211_recalc_ps_vif(sdata);
2455
2456 return 0;
2457 }
2458
2459 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2460 struct net_device *dev,
2461 s32 rssi_thold, u32 rssi_hyst)
2462 {
2463 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2464 struct ieee80211_vif *vif = &sdata->vif;
2465 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2466
2467 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2468 rssi_hyst == bss_conf->cqm_rssi_hyst)
2469 return 0;
2470
2471 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2472 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2473 return -EOPNOTSUPP;
2474
2475 bss_conf->cqm_rssi_thold = rssi_thold;
2476 bss_conf->cqm_rssi_hyst = rssi_hyst;
2477
2478 /* tell the driver upon association, unless already associated */
2479 if (sdata->u.mgd.associated &&
2480 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2481 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2482
2483 return 0;
2484 }
2485
2486 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2487 struct net_device *dev,
2488 const u8 *addr,
2489 const struct cfg80211_bitrate_mask *mask)
2490 {
2491 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2492 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2493 int i, ret;
2494
2495 if (!ieee80211_sdata_running(sdata))
2496 return -ENETDOWN;
2497
2498 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2499 ret = drv_set_bitrate_mask(local, sdata, mask);
2500 if (ret)
2501 return ret;
2502 }
2503
2504 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2505 struct ieee80211_supported_band *sband = wiphy->bands[i];
2506 int j;
2507
2508 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2509 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2510 sizeof(mask->control[i].ht_mcs));
2511 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2512 mask->control[i].vht_mcs,
2513 sizeof(mask->control[i].vht_mcs));
2514
2515 sdata->rc_has_mcs_mask[i] = false;
2516 sdata->rc_has_vht_mcs_mask[i] = false;
2517 if (!sband)
2518 continue;
2519
2520 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2521 if (~sdata->rc_rateidx_mcs_mask[i][j])
2522 sdata->rc_has_mcs_mask[i] = true;
2523
2524 if (~sdata->rc_rateidx_vht_mcs_mask[i][j])
2525 sdata->rc_has_vht_mcs_mask[i] = true;
2526
2527 if (sdata->rc_has_mcs_mask[i] &&
2528 sdata->rc_has_vht_mcs_mask[i])
2529 break;
2530 }
2531 }
2532
2533 return 0;
2534 }
2535
2536 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local,
2537 struct ieee80211_roc_work *new_roc,
2538 struct ieee80211_roc_work *cur_roc)
2539 {
2540 unsigned long now = jiffies;
2541 unsigned long remaining = cur_roc->hw_start_time +
2542 msecs_to_jiffies(cur_roc->duration) -
2543 now;
2544
2545 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun))
2546 return false;
2547
2548 /* if it doesn't fit entirely, schedule a new one */
2549 if (new_roc->duration > jiffies_to_msecs(remaining))
2550 return false;
2551
2552 ieee80211_handle_roc_started(new_roc);
2553
2554 /* add to dependents so we send the expired event properly */
2555 list_add_tail(&new_roc->list, &cur_roc->dependents);
2556 return true;
2557 }
2558
2559 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
2560 {
2561 lockdep_assert_held(&local->mtx);
2562
2563 local->roc_cookie_counter++;
2564
2565 /* wow, you wrapped 64 bits ... more likely a bug */
2566 if (WARN_ON(local->roc_cookie_counter == 0))
2567 local->roc_cookie_counter++;
2568
2569 return local->roc_cookie_counter;
2570 }
2571
2572 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2573 struct ieee80211_sub_if_data *sdata,
2574 struct ieee80211_channel *channel,
2575 unsigned int duration, u64 *cookie,
2576 struct sk_buff *txskb,
2577 enum ieee80211_roc_type type)
2578 {
2579 struct ieee80211_roc_work *roc, *tmp;
2580 bool queued = false;
2581 int ret;
2582
2583 lockdep_assert_held(&local->mtx);
2584
2585 if (local->use_chanctx && !local->ops->remain_on_channel)
2586 return -EOPNOTSUPP;
2587
2588 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2589 if (!roc)
2590 return -ENOMEM;
2591
2592 /*
2593 * If the duration is zero, then the driver
2594 * wouldn't actually do anything. Set it to
2595 * 10 for now.
2596 *
2597 * TODO: cancel the off-channel operation
2598 * when we get the SKB's TX status and
2599 * the wait time was zero before.
2600 */
2601 if (!duration)
2602 duration = 10;
2603
2604 roc->chan = channel;
2605 roc->duration = duration;
2606 roc->req_duration = duration;
2607 roc->frame = txskb;
2608 roc->type = type;
2609 roc->sdata = sdata;
2610 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2611 INIT_LIST_HEAD(&roc->dependents);
2612
2613 /*
2614 * cookie is either the roc cookie (for normal roc)
2615 * or the SKB (for mgmt TX)
2616 */
2617 if (!txskb) {
2618 roc->cookie = ieee80211_mgmt_tx_cookie(local);
2619 *cookie = roc->cookie;
2620 } else {
2621 roc->mgmt_tx_cookie = *cookie;
2622 }
2623
2624 /* if there's one pending or we're scanning, queue this one */
2625 if (!list_empty(&local->roc_list) ||
2626 local->scanning || ieee80211_is_radar_required(local))
2627 goto out_check_combine;
2628
2629 /* if not HW assist, just queue & schedule work */
2630 if (!local->ops->remain_on_channel) {
2631 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2632 goto out_queue;
2633 }
2634
2635 /* otherwise actually kick it off here (for error handling) */
2636
2637 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2638 if (ret) {
2639 kfree(roc);
2640 return ret;
2641 }
2642
2643 roc->started = true;
2644 goto out_queue;
2645
2646 out_check_combine:
2647 list_for_each_entry(tmp, &local->roc_list, list) {
2648 if (tmp->chan != channel || tmp->sdata != sdata)
2649 continue;
2650
2651 /*
2652 * Extend this ROC if possible:
2653 *
2654 * If it hasn't started yet, just increase the duration
2655 * and add the new one to the list of dependents.
2656 * If the type of the new ROC has higher priority, modify the
2657 * type of the previous one to match that of the new one.
2658 */
2659 if (!tmp->started) {
2660 list_add_tail(&roc->list, &tmp->dependents);
2661 tmp->duration = max(tmp->duration, roc->duration);
2662 tmp->type = max(tmp->type, roc->type);
2663 queued = true;
2664 break;
2665 }
2666
2667 /* If it has already started, it's more difficult ... */
2668 if (local->ops->remain_on_channel) {
2669 /*
2670 * In the offloaded ROC case, if it hasn't begun, add
2671 * this new one to the dependent list to be handled
2672 * when the master one begins. If it has begun,
2673 * check if it fits entirely within the existing one,
2674 * in which case it will just be dependent as well.
2675 * Otherwise, schedule it by itself.
2676 */
2677 if (!tmp->hw_begun) {
2678 list_add_tail(&roc->list, &tmp->dependents);
2679 queued = true;
2680 break;
2681 }
2682
2683 if (ieee80211_coalesce_started_roc(local, roc, tmp))
2684 queued = true;
2685 } else if (del_timer_sync(&tmp->work.timer)) {
2686 unsigned long new_end;
2687
2688 /*
2689 * In the software ROC case, cancel the timer, if
2690 * that fails then the finish work is already
2691 * queued/pending and thus we queue the new ROC
2692 * normally, if that succeeds then we can extend
2693 * the timer duration and TX the frame (if any.)
2694 */
2695
2696 list_add_tail(&roc->list, &tmp->dependents);
2697 queued = true;
2698
2699 new_end = jiffies + msecs_to_jiffies(roc->duration);
2700
2701 /* ok, it was started & we canceled timer */
2702 if (time_after(new_end, tmp->work.timer.expires))
2703 mod_timer(&tmp->work.timer, new_end);
2704 else
2705 add_timer(&tmp->work.timer);
2706
2707 ieee80211_handle_roc_started(roc);
2708 }
2709 break;
2710 }
2711
2712 out_queue:
2713 if (!queued)
2714 list_add_tail(&roc->list, &local->roc_list);
2715
2716 return 0;
2717 }
2718
2719 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2720 struct wireless_dev *wdev,
2721 struct ieee80211_channel *chan,
2722 unsigned int duration,
2723 u64 *cookie)
2724 {
2725 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2726 struct ieee80211_local *local = sdata->local;
2727 int ret;
2728
2729 mutex_lock(&local->mtx);
2730 ret = ieee80211_start_roc_work(local, sdata, chan,
2731 duration, cookie, NULL,
2732 IEEE80211_ROC_TYPE_NORMAL);
2733 mutex_unlock(&local->mtx);
2734
2735 return ret;
2736 }
2737
2738 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2739 u64 cookie, bool mgmt_tx)
2740 {
2741 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2742 int ret;
2743
2744 mutex_lock(&local->mtx);
2745 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2746 struct ieee80211_roc_work *dep, *tmp2;
2747
2748 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2749 if (!mgmt_tx && dep->cookie != cookie)
2750 continue;
2751 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2752 continue;
2753 /* found dependent item -- just remove it */
2754 list_del(&dep->list);
2755 mutex_unlock(&local->mtx);
2756
2757 ieee80211_roc_notify_destroy(dep, true);
2758 return 0;
2759 }
2760
2761 if (!mgmt_tx && roc->cookie != cookie)
2762 continue;
2763 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2764 continue;
2765
2766 found = roc;
2767 break;
2768 }
2769
2770 if (!found) {
2771 mutex_unlock(&local->mtx);
2772 return -ENOENT;
2773 }
2774
2775 /*
2776 * We found the item to cancel, so do that. Note that it
2777 * may have dependents, which we also cancel (and send
2778 * the expired signal for.) Not doing so would be quite
2779 * tricky here, but we may need to fix it later.
2780 */
2781
2782 if (local->ops->remain_on_channel) {
2783 if (found->started) {
2784 ret = drv_cancel_remain_on_channel(local);
2785 if (WARN_ON_ONCE(ret)) {
2786 mutex_unlock(&local->mtx);
2787 return ret;
2788 }
2789 }
2790
2791 list_del(&found->list);
2792
2793 if (found->started)
2794 ieee80211_start_next_roc(local);
2795 mutex_unlock(&local->mtx);
2796
2797 ieee80211_roc_notify_destroy(found, true);
2798 } else {
2799 /* work may be pending so use it all the time */
2800 found->abort = true;
2801 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2802
2803 mutex_unlock(&local->mtx);
2804
2805 /* work will clean up etc */
2806 flush_delayed_work(&found->work);
2807 WARN_ON(!found->to_be_freed);
2808 kfree(found);
2809 }
2810
2811 return 0;
2812 }
2813
2814 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2815 struct wireless_dev *wdev,
2816 u64 cookie)
2817 {
2818 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2819 struct ieee80211_local *local = sdata->local;
2820
2821 return ieee80211_cancel_roc(local, cookie, false);
2822 }
2823
2824 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2825 struct net_device *dev,
2826 struct cfg80211_chan_def *chandef,
2827 u32 cac_time_ms)
2828 {
2829 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2830 struct ieee80211_local *local = sdata->local;
2831 int err;
2832
2833 mutex_lock(&local->mtx);
2834 if (!list_empty(&local->roc_list) || local->scanning) {
2835 err = -EBUSY;
2836 goto out_unlock;
2837 }
2838
2839 /* whatever, but channel contexts should not complain about that one */
2840 sdata->smps_mode = IEEE80211_SMPS_OFF;
2841 sdata->needed_rx_chains = local->rx_chains;
2842
2843 err = ieee80211_vif_use_channel(sdata, chandef,
2844 IEEE80211_CHANCTX_SHARED);
2845 if (err)
2846 goto out_unlock;
2847
2848 ieee80211_queue_delayed_work(&sdata->local->hw,
2849 &sdata->dfs_cac_timer_work,
2850 msecs_to_jiffies(cac_time_ms));
2851
2852 out_unlock:
2853 mutex_unlock(&local->mtx);
2854 return err;
2855 }
2856
2857 static struct cfg80211_beacon_data *
2858 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2859 {
2860 struct cfg80211_beacon_data *new_beacon;
2861 u8 *pos;
2862 int len;
2863
2864 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2865 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2866 beacon->probe_resp_len;
2867
2868 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2869 if (!new_beacon)
2870 return NULL;
2871
2872 pos = (u8 *)(new_beacon + 1);
2873 if (beacon->head_len) {
2874 new_beacon->head_len = beacon->head_len;
2875 new_beacon->head = pos;
2876 memcpy(pos, beacon->head, beacon->head_len);
2877 pos += beacon->head_len;
2878 }
2879 if (beacon->tail_len) {
2880 new_beacon->tail_len = beacon->tail_len;
2881 new_beacon->tail = pos;
2882 memcpy(pos, beacon->tail, beacon->tail_len);
2883 pos += beacon->tail_len;
2884 }
2885 if (beacon->beacon_ies_len) {
2886 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2887 new_beacon->beacon_ies = pos;
2888 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2889 pos += beacon->beacon_ies_len;
2890 }
2891 if (beacon->proberesp_ies_len) {
2892 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2893 new_beacon->proberesp_ies = pos;
2894 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2895 pos += beacon->proberesp_ies_len;
2896 }
2897 if (beacon->assocresp_ies_len) {
2898 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2899 new_beacon->assocresp_ies = pos;
2900 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2901 pos += beacon->assocresp_ies_len;
2902 }
2903 if (beacon->probe_resp_len) {
2904 new_beacon->probe_resp_len = beacon->probe_resp_len;
2905 beacon->probe_resp = pos;
2906 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2907 pos += beacon->probe_resp_len;
2908 }
2909
2910 return new_beacon;
2911 }
2912
2913 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2914 {
2915 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2916
2917 ieee80211_queue_work(&sdata->local->hw,
2918 &sdata->csa_finalize_work);
2919 }
2920 EXPORT_SYMBOL(ieee80211_csa_finish);
2921
2922 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2923 u32 *changed)
2924 {
2925 int err;
2926
2927 switch (sdata->vif.type) {
2928 case NL80211_IFTYPE_AP:
2929 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2930 NULL);
2931 kfree(sdata->u.ap.next_beacon);
2932 sdata->u.ap.next_beacon = NULL;
2933
2934 if (err < 0)
2935 return err;
2936 *changed |= err;
2937 break;
2938 case NL80211_IFTYPE_ADHOC:
2939 err = ieee80211_ibss_finish_csa(sdata);
2940 if (err < 0)
2941 return err;
2942 *changed |= err;
2943 break;
2944 #ifdef CONFIG_MAC80211_MESH
2945 case NL80211_IFTYPE_MESH_POINT:
2946 err = ieee80211_mesh_finish_csa(sdata);
2947 if (err < 0)
2948 return err;
2949 *changed |= err;
2950 break;
2951 #endif
2952 default:
2953 WARN_ON(1);
2954 return -EINVAL;
2955 }
2956
2957 return 0;
2958 }
2959
2960 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2961 {
2962 struct ieee80211_local *local = sdata->local;
2963 u32 changed = 0;
2964 int err;
2965
2966 sdata_assert_lock(sdata);
2967 lockdep_assert_held(&local->mtx);
2968 lockdep_assert_held(&local->chanctx_mtx);
2969
2970 /*
2971 * using reservation isn't immediate as it may be deferred until later
2972 * with multi-vif. once reservation is complete it will re-schedule the
2973 * work with no reserved_chanctx so verify chandef to check if it
2974 * completed successfully
2975 */
2976
2977 if (sdata->reserved_chanctx) {
2978 /*
2979 * with multi-vif csa driver may call ieee80211_csa_finish()
2980 * many times while waiting for other interfaces to use their
2981 * reservations
2982 */
2983 if (sdata->reserved_ready)
2984 return 0;
2985
2986 return ieee80211_vif_use_reserved_context(sdata);
2987 }
2988
2989 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2990 &sdata->csa_chandef))
2991 return -EINVAL;
2992
2993 sdata->vif.csa_active = false;
2994
2995 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2996 if (err)
2997 return err;
2998
2999 ieee80211_bss_info_change_notify(sdata, changed);
3000
3001 if (sdata->csa_block_tx) {
3002 ieee80211_wake_vif_queues(local, sdata,
3003 IEEE80211_QUEUE_STOP_REASON_CSA);
3004 sdata->csa_block_tx = false;
3005 }
3006
3007 err = drv_post_channel_switch(sdata);
3008 if (err)
3009 return err;
3010
3011 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3012
3013 return 0;
3014 }
3015
3016 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3017 {
3018 if (__ieee80211_csa_finalize(sdata)) {
3019 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3020 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3021 GFP_KERNEL);
3022 }
3023 }
3024
3025 void ieee80211_csa_finalize_work(struct work_struct *work)
3026 {
3027 struct ieee80211_sub_if_data *sdata =
3028 container_of(work, struct ieee80211_sub_if_data,
3029 csa_finalize_work);
3030 struct ieee80211_local *local = sdata->local;
3031
3032 sdata_lock(sdata);
3033 mutex_lock(&local->mtx);
3034 mutex_lock(&local->chanctx_mtx);
3035
3036 /* AP might have been stopped while waiting for the lock. */
3037 if (!sdata->vif.csa_active)
3038 goto unlock;
3039
3040 if (!ieee80211_sdata_running(sdata))
3041 goto unlock;
3042
3043 ieee80211_csa_finalize(sdata);
3044
3045 unlock:
3046 mutex_unlock(&local->chanctx_mtx);
3047 mutex_unlock(&local->mtx);
3048 sdata_unlock(sdata);
3049 }
3050
3051 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3052 struct cfg80211_csa_settings *params,
3053 u32 *changed)
3054 {
3055 struct ieee80211_csa_settings csa = {};
3056 int err;
3057
3058 switch (sdata->vif.type) {
3059 case NL80211_IFTYPE_AP:
3060 sdata->u.ap.next_beacon =
3061 cfg80211_beacon_dup(&params->beacon_after);
3062 if (!sdata->u.ap.next_beacon)
3063 return -ENOMEM;
3064
3065 /*
3066 * With a count of 0, we don't have to wait for any
3067 * TBTT before switching, so complete the CSA
3068 * immediately. In theory, with a count == 1 we
3069 * should delay the switch until just before the next
3070 * TBTT, but that would complicate things so we switch
3071 * immediately too. If we would delay the switch
3072 * until the next TBTT, we would have to set the probe
3073 * response here.
3074 *
3075 * TODO: A channel switch with count <= 1 without
3076 * sending a CSA action frame is kind of useless,
3077 * because the clients won't know we're changing
3078 * channels. The action frame must be implemented
3079 * either here or in the userspace.
3080 */
3081 if (params->count <= 1)
3082 break;
3083
3084 if ((params->n_counter_offsets_beacon >
3085 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3086 (params->n_counter_offsets_presp >
3087 IEEE80211_MAX_CSA_COUNTERS_NUM))
3088 return -EINVAL;
3089
3090 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3091 csa.counter_offsets_presp = params->counter_offsets_presp;
3092 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3093 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3094 csa.count = params->count;
3095
3096 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3097 if (err < 0) {
3098 kfree(sdata->u.ap.next_beacon);
3099 return err;
3100 }
3101 *changed |= err;
3102
3103 break;
3104 case NL80211_IFTYPE_ADHOC:
3105 if (!sdata->vif.bss_conf.ibss_joined)
3106 return -EINVAL;
3107
3108 if (params->chandef.width != sdata->u.ibss.chandef.width)
3109 return -EINVAL;
3110
3111 switch (params->chandef.width) {
3112 case NL80211_CHAN_WIDTH_40:
3113 if (cfg80211_get_chandef_type(&params->chandef) !=
3114 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3115 return -EINVAL;
3116 case NL80211_CHAN_WIDTH_5:
3117 case NL80211_CHAN_WIDTH_10:
3118 case NL80211_CHAN_WIDTH_20_NOHT:
3119 case NL80211_CHAN_WIDTH_20:
3120 break;
3121 default:
3122 return -EINVAL;
3123 }
3124
3125 /* changes into another band are not supported */
3126 if (sdata->u.ibss.chandef.chan->band !=
3127 params->chandef.chan->band)
3128 return -EINVAL;
3129
3130 /* see comments in the NL80211_IFTYPE_AP block */
3131 if (params->count > 1) {
3132 err = ieee80211_ibss_csa_beacon(sdata, params);
3133 if (err < 0)
3134 return err;
3135 *changed |= err;
3136 }
3137
3138 ieee80211_send_action_csa(sdata, params);
3139
3140 break;
3141 #ifdef CONFIG_MAC80211_MESH
3142 case NL80211_IFTYPE_MESH_POINT: {
3143 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3144
3145 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3146 return -EINVAL;
3147
3148 /* changes into another band are not supported */
3149 if (sdata->vif.bss_conf.chandef.chan->band !=
3150 params->chandef.chan->band)
3151 return -EINVAL;
3152
3153 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3154 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3155 if (!ifmsh->pre_value)
3156 ifmsh->pre_value = 1;
3157 else
3158 ifmsh->pre_value++;
3159 }
3160
3161 /* see comments in the NL80211_IFTYPE_AP block */
3162 if (params->count > 1) {
3163 err = ieee80211_mesh_csa_beacon(sdata, params);
3164 if (err < 0) {
3165 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3166 return err;
3167 }
3168 *changed |= err;
3169 }
3170
3171 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3172 ieee80211_send_action_csa(sdata, params);
3173
3174 break;
3175 }
3176 #endif
3177 default:
3178 return -EOPNOTSUPP;
3179 }
3180
3181 return 0;
3182 }
3183
3184 static int
3185 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3186 struct cfg80211_csa_settings *params)
3187 {
3188 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3189 struct ieee80211_local *local = sdata->local;
3190 struct ieee80211_channel_switch ch_switch;
3191 struct ieee80211_chanctx_conf *conf;
3192 struct ieee80211_chanctx *chanctx;
3193 u32 changed = 0;
3194 int err;
3195
3196 sdata_assert_lock(sdata);
3197 lockdep_assert_held(&local->mtx);
3198
3199 if (!list_empty(&local->roc_list) || local->scanning)
3200 return -EBUSY;
3201
3202 if (sdata->wdev.cac_started)
3203 return -EBUSY;
3204
3205 if (cfg80211_chandef_identical(&params->chandef,
3206 &sdata->vif.bss_conf.chandef))
3207 return -EINVAL;
3208
3209 /* don't allow another channel switch if one is already active. */
3210 if (sdata->vif.csa_active)
3211 return -EBUSY;
3212
3213 mutex_lock(&local->chanctx_mtx);
3214 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3215 lockdep_is_held(&local->chanctx_mtx));
3216 if (!conf) {
3217 err = -EBUSY;
3218 goto out;
3219 }
3220
3221 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3222 if (!chanctx) {
3223 err = -EBUSY;
3224 goto out;
3225 }
3226
3227 ch_switch.timestamp = 0;
3228 ch_switch.device_timestamp = 0;
3229 ch_switch.block_tx = params->block_tx;
3230 ch_switch.chandef = params->chandef;
3231 ch_switch.count = params->count;
3232
3233 err = drv_pre_channel_switch(sdata, &ch_switch);
3234 if (err)
3235 goto out;
3236
3237 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3238 chanctx->mode,
3239 params->radar_required);
3240 if (err)
3241 goto out;
3242
3243 /* if reservation is invalid then this will fail */
3244 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3245 if (err) {
3246 ieee80211_vif_unreserve_chanctx(sdata);
3247 goto out;
3248 }
3249
3250 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3251 if (err) {
3252 ieee80211_vif_unreserve_chanctx(sdata);
3253 goto out;
3254 }
3255
3256 sdata->csa_chandef = params->chandef;
3257 sdata->csa_block_tx = params->block_tx;
3258 sdata->vif.csa_active = true;
3259
3260 if (sdata->csa_block_tx)
3261 ieee80211_stop_vif_queues(local, sdata,
3262 IEEE80211_QUEUE_STOP_REASON_CSA);
3263
3264 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3265 params->count);
3266
3267 if (changed) {
3268 ieee80211_bss_info_change_notify(sdata, changed);
3269 drv_channel_switch_beacon(sdata, &params->chandef);
3270 } else {
3271 /* if the beacon didn't change, we can finalize immediately */
3272 ieee80211_csa_finalize(sdata);
3273 }
3274
3275 out:
3276 mutex_unlock(&local->chanctx_mtx);
3277 return err;
3278 }
3279
3280 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3281 struct cfg80211_csa_settings *params)
3282 {
3283 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3284 struct ieee80211_local *local = sdata->local;
3285 int err;
3286
3287 mutex_lock(&local->mtx);
3288 err = __ieee80211_channel_switch(wiphy, dev, params);
3289 mutex_unlock(&local->mtx);
3290
3291 return err;
3292 }
3293
3294 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local,
3295 struct sk_buff *skb, u64 *cookie,
3296 gfp_t gfp)
3297 {
3298 unsigned long spin_flags;
3299 struct sk_buff *ack_skb;
3300 int id;
3301
3302 ack_skb = skb_copy(skb, gfp);
3303 if (!ack_skb)
3304 return ERR_PTR(-ENOMEM);
3305
3306 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3307 id = idr_alloc(&local->ack_status_frames, ack_skb,
3308 1, 0x10000, GFP_ATOMIC);
3309 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3310
3311 if (id < 0) {
3312 kfree_skb(ack_skb);
3313 return ERR_PTR(-ENOMEM);
3314 }
3315
3316 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3317
3318 *cookie = ieee80211_mgmt_tx_cookie(local);
3319 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3320
3321 return ack_skb;
3322 }
3323
3324 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3325 struct cfg80211_mgmt_tx_params *params,
3326 u64 *cookie)
3327 {
3328 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3329 struct ieee80211_local *local = sdata->local;
3330 struct sk_buff *skb, *ack_skb;
3331 struct sta_info *sta;
3332 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3333 bool need_offchan = false;
3334 u32 flags;
3335 int ret;
3336 u8 *data;
3337
3338 if (params->dont_wait_for_ack)
3339 flags = IEEE80211_TX_CTL_NO_ACK;
3340 else
3341 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3342 IEEE80211_TX_CTL_REQ_TX_STATUS;
3343
3344 if (params->no_cck)
3345 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3346
3347 switch (sdata->vif.type) {
3348 case NL80211_IFTYPE_ADHOC:
3349 if (!sdata->vif.bss_conf.ibss_joined)
3350 need_offchan = true;
3351 /* fall through */
3352 #ifdef CONFIG_MAC80211_MESH
3353 case NL80211_IFTYPE_MESH_POINT:
3354 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3355 !sdata->u.mesh.mesh_id_len)
3356 need_offchan = true;
3357 /* fall through */
3358 #endif
3359 case NL80211_IFTYPE_AP:
3360 case NL80211_IFTYPE_AP_VLAN:
3361 case NL80211_IFTYPE_P2P_GO:
3362 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3363 !ieee80211_vif_is_mesh(&sdata->vif) &&
3364 !rcu_access_pointer(sdata->bss->beacon))
3365 need_offchan = true;
3366 if (!ieee80211_is_action(mgmt->frame_control) ||
3367 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3368 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3369 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3370 break;
3371 rcu_read_lock();
3372 sta = sta_info_get(sdata, mgmt->da);
3373 rcu_read_unlock();
3374 if (!sta)
3375 return -ENOLINK;
3376 break;
3377 case NL80211_IFTYPE_STATION:
3378 case NL80211_IFTYPE_P2P_CLIENT:
3379 sdata_lock(sdata);
3380 if (!sdata->u.mgd.associated ||
3381 (params->offchan && params->wait &&
3382 local->ops->remain_on_channel &&
3383 memcmp(sdata->u.mgd.associated->bssid,
3384 mgmt->bssid, ETH_ALEN)))
3385 need_offchan = true;
3386 sdata_unlock(sdata);
3387 break;
3388 case NL80211_IFTYPE_P2P_DEVICE:
3389 need_offchan = true;
3390 break;
3391 default:
3392 return -EOPNOTSUPP;
3393 }
3394
3395 /* configurations requiring offchan cannot work if no channel has been
3396 * specified
3397 */
3398 if (need_offchan && !params->chan)
3399 return -EINVAL;
3400
3401 mutex_lock(&local->mtx);
3402
3403 /* Check if the operating channel is the requested channel */
3404 if (!need_offchan) {
3405 struct ieee80211_chanctx_conf *chanctx_conf;
3406
3407 rcu_read_lock();
3408 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3409
3410 if (chanctx_conf) {
3411 need_offchan = params->chan &&
3412 (params->chan !=
3413 chanctx_conf->def.chan);
3414 } else if (!params->chan) {
3415 ret = -EINVAL;
3416 rcu_read_unlock();
3417 goto out_unlock;
3418 } else {
3419 need_offchan = true;
3420 }
3421 rcu_read_unlock();
3422 }
3423
3424 if (need_offchan && !params->offchan) {
3425 ret = -EBUSY;
3426 goto out_unlock;
3427 }
3428
3429 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3430 if (!skb) {
3431 ret = -ENOMEM;
3432 goto out_unlock;
3433 }
3434 skb_reserve(skb, local->hw.extra_tx_headroom);
3435
3436 data = skb_put(skb, params->len);
3437 memcpy(data, params->buf, params->len);
3438
3439 /* Update CSA counters */
3440 if (sdata->vif.csa_active &&
3441 (sdata->vif.type == NL80211_IFTYPE_AP ||
3442 sdata->vif.type == NL80211_IFTYPE_MESH_POINT ||
3443 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3444 params->n_csa_offsets) {
3445 int i;
3446 struct beacon_data *beacon = NULL;
3447
3448 rcu_read_lock();
3449
3450 if (sdata->vif.type == NL80211_IFTYPE_AP)
3451 beacon = rcu_dereference(sdata->u.ap.beacon);
3452 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
3453 beacon = rcu_dereference(sdata->u.ibss.presp);
3454 else if (ieee80211_vif_is_mesh(&sdata->vif))
3455 beacon = rcu_dereference(sdata->u.mesh.beacon);
3456
3457 if (beacon)
3458 for (i = 0; i < params->n_csa_offsets; i++)
3459 data[params->csa_offsets[i]] =
3460 beacon->csa_current_counter;
3461
3462 rcu_read_unlock();
3463 }
3464
3465 IEEE80211_SKB_CB(skb)->flags = flags;
3466
3467 skb->dev = sdata->dev;
3468
3469 if (!params->dont_wait_for_ack) {
3470 /* make a copy to preserve the frame contents
3471 * in case of encryption.
3472 */
3473 ack_skb = ieee80211_make_ack_skb(local, skb, cookie,
3474 GFP_KERNEL);
3475 if (IS_ERR(ack_skb)) {
3476 ret = PTR_ERR(ack_skb);
3477 kfree_skb(skb);
3478 goto out_unlock;
3479 }
3480 } else {
3481 /* for cookie below */
3482 ack_skb = skb;
3483 }
3484
3485 if (!need_offchan) {
3486 ieee80211_tx_skb(sdata, skb);
3487 ret = 0;
3488 goto out_unlock;
3489 }
3490
3491 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3492 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3493 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL))
3494 IEEE80211_SKB_CB(skb)->hw_queue =
3495 local->hw.offchannel_tx_hw_queue;
3496
3497 /* This will handle all kinds of coalescing and immediate TX */
3498 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3499 params->wait, cookie, skb,
3500 IEEE80211_ROC_TYPE_MGMT_TX);
3501 if (ret)
3502 kfree_skb(skb);
3503 out_unlock:
3504 mutex_unlock(&local->mtx);
3505 return ret;
3506 }
3507
3508 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3509 struct wireless_dev *wdev,
3510 u64 cookie)
3511 {
3512 struct ieee80211_local *local = wiphy_priv(wiphy);
3513
3514 return ieee80211_cancel_roc(local, cookie, true);
3515 }
3516
3517 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3518 struct wireless_dev *wdev,
3519 u16 frame_type, bool reg)
3520 {
3521 struct ieee80211_local *local = wiphy_priv(wiphy);
3522
3523 switch (frame_type) {
3524 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3525 if (reg)
3526 local->probe_req_reg++;
3527 else
3528 local->probe_req_reg--;
3529
3530 if (!local->open_count)
3531 break;
3532
3533 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3534 break;
3535 default:
3536 break;
3537 }
3538 }
3539
3540 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3541 {
3542 struct ieee80211_local *local = wiphy_priv(wiphy);
3543
3544 if (local->started)
3545 return -EOPNOTSUPP;
3546
3547 return drv_set_antenna(local, tx_ant, rx_ant);
3548 }
3549
3550 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3551 {
3552 struct ieee80211_local *local = wiphy_priv(wiphy);
3553
3554 return drv_get_antenna(local, tx_ant, rx_ant);
3555 }
3556
3557 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3558 struct net_device *dev,
3559 struct cfg80211_gtk_rekey_data *data)
3560 {
3561 struct ieee80211_local *local = wiphy_priv(wiphy);
3562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3563
3564 if (!local->ops->set_rekey_data)
3565 return -EOPNOTSUPP;
3566
3567 drv_set_rekey_data(local, sdata, data);
3568
3569 return 0;
3570 }
3571
3572 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3573 const u8 *peer, u64 *cookie)
3574 {
3575 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3576 struct ieee80211_local *local = sdata->local;
3577 struct ieee80211_qos_hdr *nullfunc;
3578 struct sk_buff *skb, *ack_skb;
3579 int size = sizeof(*nullfunc);
3580 __le16 fc;
3581 bool qos;
3582 struct ieee80211_tx_info *info;
3583 struct sta_info *sta;
3584 struct ieee80211_chanctx_conf *chanctx_conf;
3585 enum ieee80211_band band;
3586 int ret;
3587
3588 /* the lock is needed to assign the cookie later */
3589 mutex_lock(&local->mtx);
3590
3591 rcu_read_lock();
3592 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3593 if (WARN_ON(!chanctx_conf)) {
3594 ret = -EINVAL;
3595 goto unlock;
3596 }
3597 band = chanctx_conf->def.chan->band;
3598 sta = sta_info_get_bss(sdata, peer);
3599 if (sta) {
3600 qos = sta->sta.wme;
3601 } else {
3602 ret = -ENOLINK;
3603 goto unlock;
3604 }
3605
3606 if (qos) {
3607 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3608 IEEE80211_STYPE_QOS_NULLFUNC |
3609 IEEE80211_FCTL_FROMDS);
3610 } else {
3611 size -= 2;
3612 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3613 IEEE80211_STYPE_NULLFUNC |
3614 IEEE80211_FCTL_FROMDS);
3615 }
3616
3617 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3618 if (!skb) {
3619 ret = -ENOMEM;
3620 goto unlock;
3621 }
3622
3623 skb->dev = dev;
3624
3625 skb_reserve(skb, local->hw.extra_tx_headroom);
3626
3627 nullfunc = (void *) skb_put(skb, size);
3628 nullfunc->frame_control = fc;
3629 nullfunc->duration_id = 0;
3630 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3631 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3632 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3633 nullfunc->seq_ctrl = 0;
3634
3635 info = IEEE80211_SKB_CB(skb);
3636
3637 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3638 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3639 info->band = band;
3640
3641 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3642 skb->priority = 7;
3643 if (qos)
3644 nullfunc->qos_ctrl = cpu_to_le16(7);
3645
3646 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC);
3647 if (IS_ERR(ack_skb)) {
3648 kfree_skb(skb);
3649 ret = PTR_ERR(ack_skb);
3650 goto unlock;
3651 }
3652
3653 local_bh_disable();
3654 ieee80211_xmit(sdata, sta, skb);
3655 local_bh_enable();
3656
3657 ret = 0;
3658 unlock:
3659 rcu_read_unlock();
3660 mutex_unlock(&local->mtx);
3661
3662 return ret;
3663 }
3664
3665 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3666 struct wireless_dev *wdev,
3667 struct cfg80211_chan_def *chandef)
3668 {
3669 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3670 struct ieee80211_local *local = wiphy_priv(wiphy);
3671 struct ieee80211_chanctx_conf *chanctx_conf;
3672 int ret = -ENODATA;
3673
3674 rcu_read_lock();
3675 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3676 if (chanctx_conf) {
3677 *chandef = sdata->vif.bss_conf.chandef;
3678 ret = 0;
3679 } else if (local->open_count > 0 &&
3680 local->open_count == local->monitors &&
3681 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3682 if (local->use_chanctx)
3683 *chandef = local->monitor_chandef;
3684 else
3685 *chandef = local->_oper_chandef;
3686 ret = 0;
3687 }
3688 rcu_read_unlock();
3689
3690 return ret;
3691 }
3692
3693 #ifdef CONFIG_PM
3694 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3695 {
3696 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3697 }
3698 #endif
3699
3700 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3701 struct net_device *dev,
3702 struct cfg80211_qos_map *qos_map)
3703 {
3704 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3705 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3706
3707 if (qos_map) {
3708 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3709 if (!new_qos_map)
3710 return -ENOMEM;
3711 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3712 } else {
3713 /* A NULL qos_map was passed to disable QoS mapping */
3714 new_qos_map = NULL;
3715 }
3716
3717 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3718 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3719 if (old_qos_map)
3720 kfree_rcu(old_qos_map, rcu_head);
3721
3722 return 0;
3723 }
3724
3725 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3726 struct net_device *dev,
3727 struct cfg80211_chan_def *chandef)
3728 {
3729 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3730 int ret;
3731 u32 changed = 0;
3732
3733 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3734 if (ret == 0)
3735 ieee80211_bss_info_change_notify(sdata, changed);
3736
3737 return ret;
3738 }
3739
3740 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3741 u8 tsid, const u8 *peer, u8 up,
3742 u16 admitted_time)
3743 {
3744 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3745 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3746 int ac = ieee802_1d_to_ac[up];
3747
3748 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3749 return -EOPNOTSUPP;
3750
3751 if (!(sdata->wmm_acm & BIT(up)))
3752 return -EINVAL;
3753
3754 if (ifmgd->tx_tspec[ac].admitted_time)
3755 return -EBUSY;
3756
3757 if (admitted_time) {
3758 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3759 ifmgd->tx_tspec[ac].tsid = tsid;
3760 ifmgd->tx_tspec[ac].up = up;
3761 }
3762
3763 return 0;
3764 }
3765
3766 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3767 u8 tsid, const u8 *peer)
3768 {
3769 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3770 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3771 struct ieee80211_local *local = wiphy_priv(wiphy);
3772 int ac;
3773
3774 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3775 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3776
3777 /* skip unused entries */
3778 if (!tx_tspec->admitted_time)
3779 continue;
3780
3781 if (tx_tspec->tsid != tsid)
3782 continue;
3783
3784 /* due to this new packets will be reassigned to non-ACM ACs */
3785 tx_tspec->up = -1;
3786
3787 /* Make sure that all packets have been sent to avoid to
3788 * restore the QoS params on packets that are still on the
3789 * queues.
3790 */
3791 synchronize_net();
3792 ieee80211_flush_queues(local, sdata, false);
3793
3794 /* restore the normal QoS parameters
3795 * (unconditionally to avoid races)
3796 */
3797 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3798 tx_tspec->downgraded = false;
3799 ieee80211_sta_handle_tspec_ac_params(sdata);
3800
3801 /* finally clear all the data */
3802 memset(tx_tspec, 0, sizeof(*tx_tspec));
3803
3804 return 0;
3805 }
3806
3807 return -ENOENT;
3808 }
3809
3810 const struct cfg80211_ops mac80211_config_ops = {
3811 .add_virtual_intf = ieee80211_add_iface,
3812 .del_virtual_intf = ieee80211_del_iface,
3813 .change_virtual_intf = ieee80211_change_iface,
3814 .start_p2p_device = ieee80211_start_p2p_device,
3815 .stop_p2p_device = ieee80211_stop_p2p_device,
3816 .add_key = ieee80211_add_key,
3817 .del_key = ieee80211_del_key,
3818 .get_key = ieee80211_get_key,
3819 .set_default_key = ieee80211_config_default_key,
3820 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3821 .start_ap = ieee80211_start_ap,
3822 .change_beacon = ieee80211_change_beacon,
3823 .stop_ap = ieee80211_stop_ap,
3824 .add_station = ieee80211_add_station,
3825 .del_station = ieee80211_del_station,
3826 .change_station = ieee80211_change_station,
3827 .get_station = ieee80211_get_station,
3828 .dump_station = ieee80211_dump_station,
3829 .dump_survey = ieee80211_dump_survey,
3830 #ifdef CONFIG_MAC80211_MESH
3831 .add_mpath = ieee80211_add_mpath,
3832 .del_mpath = ieee80211_del_mpath,
3833 .change_mpath = ieee80211_change_mpath,
3834 .get_mpath = ieee80211_get_mpath,
3835 .dump_mpath = ieee80211_dump_mpath,
3836 .get_mpp = ieee80211_get_mpp,
3837 .dump_mpp = ieee80211_dump_mpp,
3838 .update_mesh_config = ieee80211_update_mesh_config,
3839 .get_mesh_config = ieee80211_get_mesh_config,
3840 .join_mesh = ieee80211_join_mesh,
3841 .leave_mesh = ieee80211_leave_mesh,
3842 #endif
3843 .join_ocb = ieee80211_join_ocb,
3844 .leave_ocb = ieee80211_leave_ocb,
3845 .change_bss = ieee80211_change_bss,
3846 .set_txq_params = ieee80211_set_txq_params,
3847 .set_monitor_channel = ieee80211_set_monitor_channel,
3848 .suspend = ieee80211_suspend,
3849 .resume = ieee80211_resume,
3850 .scan = ieee80211_scan,
3851 .sched_scan_start = ieee80211_sched_scan_start,
3852 .sched_scan_stop = ieee80211_sched_scan_stop,
3853 .auth = ieee80211_auth,
3854 .assoc = ieee80211_assoc,
3855 .deauth = ieee80211_deauth,
3856 .disassoc = ieee80211_disassoc,
3857 .join_ibss = ieee80211_join_ibss,
3858 .leave_ibss = ieee80211_leave_ibss,
3859 .set_mcast_rate = ieee80211_set_mcast_rate,
3860 .set_wiphy_params = ieee80211_set_wiphy_params,
3861 .set_tx_power = ieee80211_set_tx_power,
3862 .get_tx_power = ieee80211_get_tx_power,
3863 .set_wds_peer = ieee80211_set_wds_peer,
3864 .rfkill_poll = ieee80211_rfkill_poll,
3865 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3866 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3867 .set_power_mgmt = ieee80211_set_power_mgmt,
3868 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3869 .remain_on_channel = ieee80211_remain_on_channel,
3870 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3871 .mgmt_tx = ieee80211_mgmt_tx,
3872 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3873 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3874 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3875 .set_antenna = ieee80211_set_antenna,
3876 .get_antenna = ieee80211_get_antenna,
3877 .set_rekey_data = ieee80211_set_rekey_data,
3878 .tdls_oper = ieee80211_tdls_oper,
3879 .tdls_mgmt = ieee80211_tdls_mgmt,
3880 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3881 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3882 .probe_client = ieee80211_probe_client,
3883 .set_noack_map = ieee80211_set_noack_map,
3884 #ifdef CONFIG_PM
3885 .set_wakeup = ieee80211_set_wakeup,
3886 #endif
3887 .get_channel = ieee80211_cfg_get_channel,
3888 .start_radar_detection = ieee80211_start_radar_detection,
3889 .channel_switch = ieee80211_channel_switch,
3890 .set_qos_map = ieee80211_set_qos_map,
3891 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3892 .add_tx_ts = ieee80211_add_tx_ts,
3893 .del_tx_ts = ieee80211_del_tx_ts,
3894 };
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