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Merge tag 'chrome-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome...
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2015 Intel Mobile Communications GmbH
6 *
7 * This file is GPLv2 as found in COPYING.
8 */
9
10 #include <linux/ieee80211.h>
11 #include <linux/nl80211.h>
12 #include <linux/rtnetlink.h>
13 #include <linux/slab.h>
14 #include <net/net_namespace.h>
15 #include <linux/rcupdate.h>
16 #include <linux/if_ether.h>
17 #include <net/cfg80211.h>
18 #include "ieee80211_i.h"
19 #include "driver-ops.h"
20 #include "rate.h"
21 #include "mesh.h"
22 #include "wme.h"
23
24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
25 const char *name,
26 unsigned char name_assign_type,
27 enum nl80211_iftype type,
28 u32 *flags,
29 struct vif_params *params)
30 {
31 struct ieee80211_local *local = wiphy_priv(wiphy);
32 struct wireless_dev *wdev;
33 struct ieee80211_sub_if_data *sdata;
34 int err;
35
36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
37 if (err)
38 return ERR_PTR(err);
39
40 if (type == NL80211_IFTYPE_MONITOR && flags) {
41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
42 sdata->u.mntr_flags = *flags;
43 }
44
45 return wdev;
46 }
47
48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
49 {
50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
51
52 return 0;
53 }
54
55 static int ieee80211_change_iface(struct wiphy *wiphy,
56 struct net_device *dev,
57 enum nl80211_iftype type, u32 *flags,
58 struct vif_params *params)
59 {
60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
61 int ret;
62
63 ret = ieee80211_if_change_type(sdata, type);
64 if (ret)
65 return ret;
66
67 if (type == NL80211_IFTYPE_AP_VLAN &&
68 params && params->use_4addr == 0) {
69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
70 ieee80211_check_fast_rx_iface(sdata);
71 } else if (type == NL80211_IFTYPE_STATION &&
72 params && params->use_4addr >= 0) {
73 sdata->u.mgd.use_4addr = params->use_4addr;
74 }
75
76 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
77 struct ieee80211_local *local = sdata->local;
78
79 if (ieee80211_sdata_running(sdata)) {
80 u32 mask = MONITOR_FLAG_COOK_FRAMES |
81 MONITOR_FLAG_ACTIVE;
82
83 /*
84 * Prohibit MONITOR_FLAG_COOK_FRAMES and
85 * MONITOR_FLAG_ACTIVE to be changed while the
86 * interface is up.
87 * Else we would need to add a lot of cruft
88 * to update everything:
89 * cooked_mntrs, monitor and all fif_* counters
90 * reconfigure hardware
91 */
92 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
93 return -EBUSY;
94
95 ieee80211_adjust_monitor_flags(sdata, -1);
96 sdata->u.mntr_flags = *flags;
97 ieee80211_adjust_monitor_flags(sdata, 1);
98
99 ieee80211_configure_filter(local);
100 } else {
101 /*
102 * Because the interface is down, ieee80211_do_stop
103 * and ieee80211_do_open take care of "everything"
104 * mentioned in the comment above.
105 */
106 sdata->u.mntr_flags = *flags;
107 }
108 }
109
110 return 0;
111 }
112
113 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
114 struct wireless_dev *wdev)
115 {
116 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
117 int ret;
118
119 mutex_lock(&sdata->local->chanctx_mtx);
120 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
121 mutex_unlock(&sdata->local->chanctx_mtx);
122 if (ret < 0)
123 return ret;
124
125 return ieee80211_do_open(wdev, true);
126 }
127
128 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
129 struct wireless_dev *wdev)
130 {
131 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
132 }
133
134 static int ieee80211_set_noack_map(struct wiphy *wiphy,
135 struct net_device *dev,
136 u16 noack_map)
137 {
138 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
139
140 sdata->noack_map = noack_map;
141
142 ieee80211_check_fast_xmit_iface(sdata);
143
144 return 0;
145 }
146
147 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
148 u8 key_idx, bool pairwise, const u8 *mac_addr,
149 struct key_params *params)
150 {
151 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
152 struct ieee80211_local *local = sdata->local;
153 struct sta_info *sta = NULL;
154 const struct ieee80211_cipher_scheme *cs = NULL;
155 struct ieee80211_key *key;
156 int err;
157
158 if (!ieee80211_sdata_running(sdata))
159 return -ENETDOWN;
160
161 /* reject WEP and TKIP keys if WEP failed to initialize */
162 switch (params->cipher) {
163 case WLAN_CIPHER_SUITE_WEP40:
164 case WLAN_CIPHER_SUITE_TKIP:
165 case WLAN_CIPHER_SUITE_WEP104:
166 if (IS_ERR(local->wep_tx_tfm))
167 return -EINVAL;
168 break;
169 case WLAN_CIPHER_SUITE_CCMP:
170 case WLAN_CIPHER_SUITE_CCMP_256:
171 case WLAN_CIPHER_SUITE_AES_CMAC:
172 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
173 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
174 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
175 case WLAN_CIPHER_SUITE_GCMP:
176 case WLAN_CIPHER_SUITE_GCMP_256:
177 break;
178 default:
179 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
180 break;
181 }
182
183 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
184 params->key, params->seq_len, params->seq,
185 cs);
186 if (IS_ERR(key))
187 return PTR_ERR(key);
188
189 if (pairwise)
190 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
191
192 mutex_lock(&local->sta_mtx);
193
194 if (mac_addr) {
195 if (ieee80211_vif_is_mesh(&sdata->vif))
196 sta = sta_info_get(sdata, mac_addr);
197 else
198 sta = sta_info_get_bss(sdata, mac_addr);
199 /*
200 * The ASSOC test makes sure the driver is ready to
201 * receive the key. When wpa_supplicant has roamed
202 * using FT, it attempts to set the key before
203 * association has completed, this rejects that attempt
204 * so it will set the key again after association.
205 *
206 * TODO: accept the key if we have a station entry and
207 * add it to the device after the station.
208 */
209 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
210 ieee80211_key_free_unused(key);
211 err = -ENOENT;
212 goto out_unlock;
213 }
214 }
215
216 switch (sdata->vif.type) {
217 case NL80211_IFTYPE_STATION:
218 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
219 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
220 break;
221 case NL80211_IFTYPE_AP:
222 case NL80211_IFTYPE_AP_VLAN:
223 /* Keys without a station are used for TX only */
224 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
225 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
226 break;
227 case NL80211_IFTYPE_ADHOC:
228 /* no MFP (yet) */
229 break;
230 case NL80211_IFTYPE_MESH_POINT:
231 #ifdef CONFIG_MAC80211_MESH
232 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
233 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
234 break;
235 #endif
236 case NL80211_IFTYPE_WDS:
237 case NL80211_IFTYPE_MONITOR:
238 case NL80211_IFTYPE_P2P_DEVICE:
239 case NL80211_IFTYPE_UNSPECIFIED:
240 case NUM_NL80211_IFTYPES:
241 case NL80211_IFTYPE_P2P_CLIENT:
242 case NL80211_IFTYPE_P2P_GO:
243 case NL80211_IFTYPE_OCB:
244 /* shouldn't happen */
245 WARN_ON_ONCE(1);
246 break;
247 }
248
249 if (sta)
250 sta->cipher_scheme = cs;
251
252 err = ieee80211_key_link(key, sdata, sta);
253
254 out_unlock:
255 mutex_unlock(&local->sta_mtx);
256
257 return err;
258 }
259
260 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
261 u8 key_idx, bool pairwise, const u8 *mac_addr)
262 {
263 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
264 struct ieee80211_local *local = sdata->local;
265 struct sta_info *sta;
266 struct ieee80211_key *key = NULL;
267 int ret;
268
269 mutex_lock(&local->sta_mtx);
270 mutex_lock(&local->key_mtx);
271
272 if (mac_addr) {
273 ret = -ENOENT;
274
275 sta = sta_info_get_bss(sdata, mac_addr);
276 if (!sta)
277 goto out_unlock;
278
279 if (pairwise)
280 key = key_mtx_dereference(local, sta->ptk[key_idx]);
281 else
282 key = key_mtx_dereference(local, sta->gtk[key_idx]);
283 } else
284 key = key_mtx_dereference(local, sdata->keys[key_idx]);
285
286 if (!key) {
287 ret = -ENOENT;
288 goto out_unlock;
289 }
290
291 ieee80211_key_free(key, true);
292
293 ret = 0;
294 out_unlock:
295 mutex_unlock(&local->key_mtx);
296 mutex_unlock(&local->sta_mtx);
297
298 return ret;
299 }
300
301 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
302 u8 key_idx, bool pairwise, const u8 *mac_addr,
303 void *cookie,
304 void (*callback)(void *cookie,
305 struct key_params *params))
306 {
307 struct ieee80211_sub_if_data *sdata;
308 struct sta_info *sta = NULL;
309 u8 seq[6] = {0};
310 struct key_params params;
311 struct ieee80211_key *key = NULL;
312 u64 pn64;
313 u32 iv32;
314 u16 iv16;
315 int err = -ENOENT;
316 struct ieee80211_key_seq kseq = {};
317
318 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
319
320 rcu_read_lock();
321
322 if (mac_addr) {
323 sta = sta_info_get_bss(sdata, mac_addr);
324 if (!sta)
325 goto out;
326
327 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
328 key = rcu_dereference(sta->ptk[key_idx]);
329 else if (!pairwise &&
330 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
331 key = rcu_dereference(sta->gtk[key_idx]);
332 } else
333 key = rcu_dereference(sdata->keys[key_idx]);
334
335 if (!key)
336 goto out;
337
338 memset(&params, 0, sizeof(params));
339
340 params.cipher = key->conf.cipher;
341
342 switch (key->conf.cipher) {
343 case WLAN_CIPHER_SUITE_TKIP:
344 pn64 = atomic64_read(&key->conf.tx_pn);
345 iv32 = TKIP_PN_TO_IV32(pn64);
346 iv16 = TKIP_PN_TO_IV16(pn64);
347
348 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
349 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
350 drv_get_key_seq(sdata->local, key, &kseq);
351 iv32 = kseq.tkip.iv32;
352 iv16 = kseq.tkip.iv16;
353 }
354
355 seq[0] = iv16 & 0xff;
356 seq[1] = (iv16 >> 8) & 0xff;
357 seq[2] = iv32 & 0xff;
358 seq[3] = (iv32 >> 8) & 0xff;
359 seq[4] = (iv32 >> 16) & 0xff;
360 seq[5] = (iv32 >> 24) & 0xff;
361 params.seq = seq;
362 params.seq_len = 6;
363 break;
364 case WLAN_CIPHER_SUITE_CCMP:
365 case WLAN_CIPHER_SUITE_CCMP_256:
366 case WLAN_CIPHER_SUITE_AES_CMAC:
367 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
368 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
369 offsetof(typeof(kseq), aes_cmac));
370 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
371 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
372 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
373 offsetof(typeof(kseq), aes_gmac));
374 case WLAN_CIPHER_SUITE_GCMP:
375 case WLAN_CIPHER_SUITE_GCMP_256:
376 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
377 offsetof(typeof(kseq), gcmp));
378
379 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
380 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
381 drv_get_key_seq(sdata->local, key, &kseq);
382 memcpy(seq, kseq.ccmp.pn, 6);
383 } else {
384 pn64 = atomic64_read(&key->conf.tx_pn);
385 seq[0] = pn64;
386 seq[1] = pn64 >> 8;
387 seq[2] = pn64 >> 16;
388 seq[3] = pn64 >> 24;
389 seq[4] = pn64 >> 32;
390 seq[5] = pn64 >> 40;
391 }
392 params.seq = seq;
393 params.seq_len = 6;
394 break;
395 default:
396 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
397 break;
398 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
399 break;
400 drv_get_key_seq(sdata->local, key, &kseq);
401 params.seq = kseq.hw.seq;
402 params.seq_len = kseq.hw.seq_len;
403 break;
404 }
405
406 params.key = key->conf.key;
407 params.key_len = key->conf.keylen;
408
409 callback(cookie, &params);
410 err = 0;
411
412 out:
413 rcu_read_unlock();
414 return err;
415 }
416
417 static int ieee80211_config_default_key(struct wiphy *wiphy,
418 struct net_device *dev,
419 u8 key_idx, bool uni,
420 bool multi)
421 {
422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
423
424 ieee80211_set_default_key(sdata, key_idx, uni, multi);
425
426 return 0;
427 }
428
429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
430 struct net_device *dev,
431 u8 key_idx)
432 {
433 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
434
435 ieee80211_set_default_mgmt_key(sdata, key_idx);
436
437 return 0;
438 }
439
440 void sta_set_rate_info_tx(struct sta_info *sta,
441 const struct ieee80211_tx_rate *rate,
442 struct rate_info *rinfo)
443 {
444 rinfo->flags = 0;
445 if (rate->flags & IEEE80211_TX_RC_MCS) {
446 rinfo->flags |= RATE_INFO_FLAGS_MCS;
447 rinfo->mcs = rate->idx;
448 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
449 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
450 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
451 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
452 } else {
453 struct ieee80211_supported_band *sband;
454 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
455 u16 brate;
456
457 sband = sta->local->hw.wiphy->bands[
458 ieee80211_get_sdata_band(sta->sdata)];
459 brate = sband->bitrates[rate->idx].bitrate;
460 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
461 }
462 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
463 rinfo->bw = RATE_INFO_BW_40;
464 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
465 rinfo->bw = RATE_INFO_BW_80;
466 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
467 rinfo->bw = RATE_INFO_BW_160;
468 else
469 rinfo->bw = RATE_INFO_BW_20;
470 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
471 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
472 }
473
474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
475 int idx, u8 *mac, struct station_info *sinfo)
476 {
477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
478 struct ieee80211_local *local = sdata->local;
479 struct sta_info *sta;
480 int ret = -ENOENT;
481
482 mutex_lock(&local->sta_mtx);
483
484 sta = sta_info_get_by_idx(sdata, idx);
485 if (sta) {
486 ret = 0;
487 memcpy(mac, sta->sta.addr, ETH_ALEN);
488 sta_set_sinfo(sta, sinfo);
489 }
490
491 mutex_unlock(&local->sta_mtx);
492
493 return ret;
494 }
495
496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
497 int idx, struct survey_info *survey)
498 {
499 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
500
501 return drv_get_survey(local, idx, survey);
502 }
503
504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
505 const u8 *mac, struct station_info *sinfo)
506 {
507 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
508 struct ieee80211_local *local = sdata->local;
509 struct sta_info *sta;
510 int ret = -ENOENT;
511
512 mutex_lock(&local->sta_mtx);
513
514 sta = sta_info_get_bss(sdata, mac);
515 if (sta) {
516 ret = 0;
517 sta_set_sinfo(sta, sinfo);
518 }
519
520 mutex_unlock(&local->sta_mtx);
521
522 return ret;
523 }
524
525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
526 struct cfg80211_chan_def *chandef)
527 {
528 struct ieee80211_local *local = wiphy_priv(wiphy);
529 struct ieee80211_sub_if_data *sdata;
530 int ret = 0;
531
532 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
533 return 0;
534
535 mutex_lock(&local->mtx);
536 mutex_lock(&local->iflist_mtx);
537 if (local->use_chanctx) {
538 sdata = rcu_dereference_protected(
539 local->monitor_sdata,
540 lockdep_is_held(&local->iflist_mtx));
541 if (sdata) {
542 ieee80211_vif_release_channel(sdata);
543 ret = ieee80211_vif_use_channel(sdata, chandef,
544 IEEE80211_CHANCTX_EXCLUSIVE);
545 }
546 } else if (local->open_count == local->monitors) {
547 local->_oper_chandef = *chandef;
548 ieee80211_hw_config(local, 0);
549 }
550
551 if (ret == 0)
552 local->monitor_chandef = *chandef;
553 mutex_unlock(&local->iflist_mtx);
554 mutex_unlock(&local->mtx);
555
556 return ret;
557 }
558
559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
560 const u8 *resp, size_t resp_len,
561 const struct ieee80211_csa_settings *csa)
562 {
563 struct probe_resp *new, *old;
564
565 if (!resp || !resp_len)
566 return 1;
567
568 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
569
570 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
571 if (!new)
572 return -ENOMEM;
573
574 new->len = resp_len;
575 memcpy(new->data, resp, resp_len);
576
577 if (csa)
578 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
579 csa->n_counter_offsets_presp *
580 sizeof(new->csa_counter_offsets[0]));
581
582 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
583 if (old)
584 kfree_rcu(old, rcu_head);
585
586 return 0;
587 }
588
589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
590 struct cfg80211_beacon_data *params,
591 const struct ieee80211_csa_settings *csa)
592 {
593 struct beacon_data *new, *old;
594 int new_head_len, new_tail_len;
595 int size, err;
596 u32 changed = BSS_CHANGED_BEACON;
597
598 old = sdata_dereference(sdata->u.ap.beacon, sdata);
599
600
601 /* Need to have a beacon head if we don't have one yet */
602 if (!params->head && !old)
603 return -EINVAL;
604
605 /* new or old head? */
606 if (params->head)
607 new_head_len = params->head_len;
608 else
609 new_head_len = old->head_len;
610
611 /* new or old tail? */
612 if (params->tail || !old)
613 /* params->tail_len will be zero for !params->tail */
614 new_tail_len = params->tail_len;
615 else
616 new_tail_len = old->tail_len;
617
618 size = sizeof(*new) + new_head_len + new_tail_len;
619
620 new = kzalloc(size, GFP_KERNEL);
621 if (!new)
622 return -ENOMEM;
623
624 /* start filling the new info now */
625
626 /*
627 * pointers go into the block we allocated,
628 * memory is | beacon_data | head | tail |
629 */
630 new->head = ((u8 *) new) + sizeof(*new);
631 new->tail = new->head + new_head_len;
632 new->head_len = new_head_len;
633 new->tail_len = new_tail_len;
634
635 if (csa) {
636 new->csa_current_counter = csa->count;
637 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
638 csa->n_counter_offsets_beacon *
639 sizeof(new->csa_counter_offsets[0]));
640 }
641
642 /* copy in head */
643 if (params->head)
644 memcpy(new->head, params->head, new_head_len);
645 else
646 memcpy(new->head, old->head, new_head_len);
647
648 /* copy in optional tail */
649 if (params->tail)
650 memcpy(new->tail, params->tail, new_tail_len);
651 else
652 if (old)
653 memcpy(new->tail, old->tail, new_tail_len);
654
655 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
656 params->probe_resp_len, csa);
657 if (err < 0)
658 return err;
659 if (err == 0)
660 changed |= BSS_CHANGED_AP_PROBE_RESP;
661
662 rcu_assign_pointer(sdata->u.ap.beacon, new);
663
664 if (old)
665 kfree_rcu(old, rcu_head);
666
667 return changed;
668 }
669
670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
671 struct cfg80211_ap_settings *params)
672 {
673 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
674 struct ieee80211_local *local = sdata->local;
675 struct beacon_data *old;
676 struct ieee80211_sub_if_data *vlan;
677 u32 changed = BSS_CHANGED_BEACON_INT |
678 BSS_CHANGED_BEACON_ENABLED |
679 BSS_CHANGED_BEACON |
680 BSS_CHANGED_SSID |
681 BSS_CHANGED_P2P_PS |
682 BSS_CHANGED_TXPOWER;
683 int err;
684
685 old = sdata_dereference(sdata->u.ap.beacon, sdata);
686 if (old)
687 return -EALREADY;
688
689 switch (params->smps_mode) {
690 case NL80211_SMPS_OFF:
691 sdata->smps_mode = IEEE80211_SMPS_OFF;
692 break;
693 case NL80211_SMPS_STATIC:
694 sdata->smps_mode = IEEE80211_SMPS_STATIC;
695 break;
696 case NL80211_SMPS_DYNAMIC:
697 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
698 break;
699 default:
700 return -EINVAL;
701 }
702 sdata->needed_rx_chains = sdata->local->rx_chains;
703
704 mutex_lock(&local->mtx);
705 err = ieee80211_vif_use_channel(sdata, &params->chandef,
706 IEEE80211_CHANCTX_SHARED);
707 if (!err)
708 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
709 mutex_unlock(&local->mtx);
710 if (err)
711 return err;
712
713 /*
714 * Apply control port protocol, this allows us to
715 * not encrypt dynamic WEP control frames.
716 */
717 sdata->control_port_protocol = params->crypto.control_port_ethertype;
718 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
719 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
720 &params->crypto,
721 sdata->vif.type);
722
723 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
724 vlan->control_port_protocol =
725 params->crypto.control_port_ethertype;
726 vlan->control_port_no_encrypt =
727 params->crypto.control_port_no_encrypt;
728 vlan->encrypt_headroom =
729 ieee80211_cs_headroom(sdata->local,
730 &params->crypto,
731 vlan->vif.type);
732 }
733
734 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
735 sdata->vif.bss_conf.dtim_period = params->dtim_period;
736 sdata->vif.bss_conf.enable_beacon = true;
737 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
738
739 sdata->vif.bss_conf.ssid_len = params->ssid_len;
740 if (params->ssid_len)
741 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
742 params->ssid_len);
743 sdata->vif.bss_conf.hidden_ssid =
744 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
745
746 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
747 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
749 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
750 if (params->p2p_opp_ps)
751 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
752 IEEE80211_P2P_OPPPS_ENABLE_BIT;
753
754 err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
755 if (err < 0) {
756 ieee80211_vif_release_channel(sdata);
757 return err;
758 }
759 changed |= err;
760
761 err = drv_start_ap(sdata->local, sdata);
762 if (err) {
763 old = sdata_dereference(sdata->u.ap.beacon, sdata);
764
765 if (old)
766 kfree_rcu(old, rcu_head);
767 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
768 ieee80211_vif_release_channel(sdata);
769 return err;
770 }
771
772 ieee80211_recalc_dtim(local, sdata);
773 ieee80211_bss_info_change_notify(sdata, changed);
774
775 netif_carrier_on(dev);
776 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
777 netif_carrier_on(vlan->dev);
778
779 return 0;
780 }
781
782 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
783 struct cfg80211_beacon_data *params)
784 {
785 struct ieee80211_sub_if_data *sdata;
786 struct beacon_data *old;
787 int err;
788
789 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
790 sdata_assert_lock(sdata);
791
792 /* don't allow changing the beacon while CSA is in place - offset
793 * of channel switch counter may change
794 */
795 if (sdata->vif.csa_active)
796 return -EBUSY;
797
798 old = sdata_dereference(sdata->u.ap.beacon, sdata);
799 if (!old)
800 return -ENOENT;
801
802 err = ieee80211_assign_beacon(sdata, params, NULL);
803 if (err < 0)
804 return err;
805 ieee80211_bss_info_change_notify(sdata, err);
806 return 0;
807 }
808
809 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
810 {
811 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
812 struct ieee80211_sub_if_data *vlan;
813 struct ieee80211_local *local = sdata->local;
814 struct beacon_data *old_beacon;
815 struct probe_resp *old_probe_resp;
816 struct cfg80211_chan_def chandef;
817
818 sdata_assert_lock(sdata);
819
820 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
821 if (!old_beacon)
822 return -ENOENT;
823 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
824
825 /* abort any running channel switch */
826 mutex_lock(&local->mtx);
827 sdata->vif.csa_active = false;
828 if (sdata->csa_block_tx) {
829 ieee80211_wake_vif_queues(local, sdata,
830 IEEE80211_QUEUE_STOP_REASON_CSA);
831 sdata->csa_block_tx = false;
832 }
833
834 mutex_unlock(&local->mtx);
835
836 kfree(sdata->u.ap.next_beacon);
837 sdata->u.ap.next_beacon = NULL;
838
839 /* turn off carrier for this interface and dependent VLANs */
840 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
841 netif_carrier_off(vlan->dev);
842 netif_carrier_off(dev);
843
844 /* remove beacon and probe response */
845 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
846 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
847 kfree_rcu(old_beacon, rcu_head);
848 if (old_probe_resp)
849 kfree_rcu(old_probe_resp, rcu_head);
850 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
851
852 __sta_info_flush(sdata, true);
853 ieee80211_free_keys(sdata, true);
854
855 sdata->vif.bss_conf.enable_beacon = false;
856 sdata->vif.bss_conf.ssid_len = 0;
857 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
858 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
859
860 if (sdata->wdev.cac_started) {
861 chandef = sdata->vif.bss_conf.chandef;
862 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
863 cfg80211_cac_event(sdata->dev, &chandef,
864 NL80211_RADAR_CAC_ABORTED,
865 GFP_KERNEL);
866 }
867
868 drv_stop_ap(sdata->local, sdata);
869
870 /* free all potentially still buffered bcast frames */
871 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
872 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
873
874 mutex_lock(&local->mtx);
875 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
876 ieee80211_vif_release_channel(sdata);
877 mutex_unlock(&local->mtx);
878
879 return 0;
880 }
881
882 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
883 struct iapp_layer2_update {
884 u8 da[ETH_ALEN]; /* broadcast */
885 u8 sa[ETH_ALEN]; /* STA addr */
886 __be16 len; /* 6 */
887 u8 dsap; /* 0 */
888 u8 ssap; /* 0 */
889 u8 control;
890 u8 xid_info[3];
891 } __packed;
892
893 static void ieee80211_send_layer2_update(struct sta_info *sta)
894 {
895 struct iapp_layer2_update *msg;
896 struct sk_buff *skb;
897
898 /* Send Level 2 Update Frame to update forwarding tables in layer 2
899 * bridge devices */
900
901 skb = dev_alloc_skb(sizeof(*msg));
902 if (!skb)
903 return;
904 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
905
906 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
907 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
908
909 eth_broadcast_addr(msg->da);
910 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
911 msg->len = htons(6);
912 msg->dsap = 0;
913 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
914 msg->control = 0xaf; /* XID response lsb.1111F101.
915 * F=0 (no poll command; unsolicited frame) */
916 msg->xid_info[0] = 0x81; /* XID format identifier */
917 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
918 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
919
920 skb->dev = sta->sdata->dev;
921 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
922 memset(skb->cb, 0, sizeof(skb->cb));
923 netif_rx_ni(skb);
924 }
925
926 static int sta_apply_auth_flags(struct ieee80211_local *local,
927 struct sta_info *sta,
928 u32 mask, u32 set)
929 {
930 int ret;
931
932 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
933 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
934 !test_sta_flag(sta, WLAN_STA_AUTH)) {
935 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
936 if (ret)
937 return ret;
938 }
939
940 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
941 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
942 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
943 /*
944 * When peer becomes associated, init rate control as
945 * well. Some drivers require rate control initialized
946 * before drv_sta_state() is called.
947 */
948 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
949 rate_control_rate_init(sta);
950
951 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
952 if (ret)
953 return ret;
954 }
955
956 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
957 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
958 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
959 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
960 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
961 else
962 ret = 0;
963 if (ret)
964 return ret;
965 }
966
967 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
968 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
969 test_sta_flag(sta, WLAN_STA_ASSOC)) {
970 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
971 if (ret)
972 return ret;
973 }
974
975 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
976 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
977 test_sta_flag(sta, WLAN_STA_AUTH)) {
978 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
979 if (ret)
980 return ret;
981 }
982
983 return 0;
984 }
985
986 static void sta_apply_mesh_params(struct ieee80211_local *local,
987 struct sta_info *sta,
988 struct station_parameters *params)
989 {
990 #ifdef CONFIG_MAC80211_MESH
991 struct ieee80211_sub_if_data *sdata = sta->sdata;
992 u32 changed = 0;
993
994 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
995 switch (params->plink_state) {
996 case NL80211_PLINK_ESTAB:
997 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
998 changed = mesh_plink_inc_estab_count(sdata);
999 sta->mesh->plink_state = params->plink_state;
1000
1001 ieee80211_mps_sta_status_update(sta);
1002 changed |= ieee80211_mps_set_sta_local_pm(sta,
1003 sdata->u.mesh.mshcfg.power_mode);
1004 break;
1005 case NL80211_PLINK_LISTEN:
1006 case NL80211_PLINK_BLOCKED:
1007 case NL80211_PLINK_OPN_SNT:
1008 case NL80211_PLINK_OPN_RCVD:
1009 case NL80211_PLINK_CNF_RCVD:
1010 case NL80211_PLINK_HOLDING:
1011 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1012 changed = mesh_plink_dec_estab_count(sdata);
1013 sta->mesh->plink_state = params->plink_state;
1014
1015 ieee80211_mps_sta_status_update(sta);
1016 changed |= ieee80211_mps_set_sta_local_pm(sta,
1017 NL80211_MESH_POWER_UNKNOWN);
1018 break;
1019 default:
1020 /* nothing */
1021 break;
1022 }
1023 }
1024
1025 switch (params->plink_action) {
1026 case NL80211_PLINK_ACTION_NO_ACTION:
1027 /* nothing */
1028 break;
1029 case NL80211_PLINK_ACTION_OPEN:
1030 changed |= mesh_plink_open(sta);
1031 break;
1032 case NL80211_PLINK_ACTION_BLOCK:
1033 changed |= mesh_plink_block(sta);
1034 break;
1035 }
1036
1037 if (params->local_pm)
1038 changed |= ieee80211_mps_set_sta_local_pm(sta,
1039 params->local_pm);
1040
1041 ieee80211_mbss_info_change_notify(sdata, changed);
1042 #endif
1043 }
1044
1045 static int sta_apply_parameters(struct ieee80211_local *local,
1046 struct sta_info *sta,
1047 struct station_parameters *params)
1048 {
1049 int ret = 0;
1050 struct ieee80211_supported_band *sband;
1051 struct ieee80211_sub_if_data *sdata = sta->sdata;
1052 enum nl80211_band band = ieee80211_get_sdata_band(sdata);
1053 u32 mask, set;
1054
1055 sband = local->hw.wiphy->bands[band];
1056
1057 mask = params->sta_flags_mask;
1058 set = params->sta_flags_set;
1059
1060 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1061 /*
1062 * In mesh mode, ASSOCIATED isn't part of the nl80211
1063 * API but must follow AUTHENTICATED for driver state.
1064 */
1065 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1066 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1067 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1068 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1069 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1070 /*
1071 * TDLS -- everything follows authorized, but
1072 * only becoming authorized is possible, not
1073 * going back
1074 */
1075 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1076 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1077 BIT(NL80211_STA_FLAG_ASSOCIATED);
1078 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1079 BIT(NL80211_STA_FLAG_ASSOCIATED);
1080 }
1081 }
1082
1083 if (mask & BIT(NL80211_STA_FLAG_WME) &&
1084 local->hw.queues >= IEEE80211_NUM_ACS)
1085 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1086
1087 /* auth flags will be set later for TDLS,
1088 * and for unassociated stations that move to assocaited */
1089 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1090 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1091 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1092 ret = sta_apply_auth_flags(local, sta, mask, set);
1093 if (ret)
1094 return ret;
1095 }
1096
1097 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1098 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1099 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1100 else
1101 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1102 }
1103
1104 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1105 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1106 if (set & BIT(NL80211_STA_FLAG_MFP))
1107 set_sta_flag(sta, WLAN_STA_MFP);
1108 else
1109 clear_sta_flag(sta, WLAN_STA_MFP);
1110 }
1111
1112 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1113 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1114 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1115 else
1116 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1117 }
1118
1119 /* mark TDLS channel switch support, if the AP allows it */
1120 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1121 !sdata->u.mgd.tdls_chan_switch_prohibited &&
1122 params->ext_capab_len >= 4 &&
1123 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1124 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1125
1126 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1127 !sdata->u.mgd.tdls_wider_bw_prohibited &&
1128 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1129 params->ext_capab_len >= 8 &&
1130 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1131 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1132
1133 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1134 sta->sta.uapsd_queues = params->uapsd_queues;
1135 sta->sta.max_sp = params->max_sp;
1136 }
1137
1138 /* The sender might not have sent the last bit, consider it to be 0 */
1139 if (params->ext_capab_len >= 8) {
1140 u8 val = (params->ext_capab[7] &
1141 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1142
1143 /* we did get all the bits, take the MSB as well */
1144 if (params->ext_capab_len >= 9) {
1145 u8 val_msb = params->ext_capab[8] &
1146 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1147 val_msb <<= 1;
1148 val |= val_msb;
1149 }
1150
1151 switch (val) {
1152 case 1:
1153 sta->sta.max_amsdu_subframes = 32;
1154 break;
1155 case 2:
1156 sta->sta.max_amsdu_subframes = 16;
1157 break;
1158 case 3:
1159 sta->sta.max_amsdu_subframes = 8;
1160 break;
1161 default:
1162 sta->sta.max_amsdu_subframes = 0;
1163 }
1164 }
1165
1166 /*
1167 * cfg80211 validates this (1-2007) and allows setting the AID
1168 * only when creating a new station entry
1169 */
1170 if (params->aid)
1171 sta->sta.aid = params->aid;
1172
1173 /*
1174 * Some of the following updates would be racy if called on an
1175 * existing station, via ieee80211_change_station(). However,
1176 * all such changes are rejected by cfg80211 except for updates
1177 * changing the supported rates on an existing but not yet used
1178 * TDLS peer.
1179 */
1180
1181 if (params->listen_interval >= 0)
1182 sta->listen_interval = params->listen_interval;
1183
1184 if (params->supported_rates) {
1185 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1186 sband, params->supported_rates,
1187 params->supported_rates_len,
1188 &sta->sta.supp_rates[band]);
1189 }
1190
1191 if (params->ht_capa)
1192 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1193 params->ht_capa, sta);
1194
1195 /* VHT can override some HT caps such as the A-MSDU max length */
1196 if (params->vht_capa)
1197 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1198 params->vht_capa, sta);
1199
1200 if (params->opmode_notif_used) {
1201 /* returned value is only needed for rc update, but the
1202 * rc isn't initialized here yet, so ignore it
1203 */
1204 __ieee80211_vht_handle_opmode(sdata, sta,
1205 params->opmode_notif, band);
1206 }
1207
1208 if (params->support_p2p_ps >= 0)
1209 sta->sta.support_p2p_ps = params->support_p2p_ps;
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 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1217 ret = sta_apply_auth_flags(local, sta, mask, set);
1218 if (ret)
1219 return ret;
1220 }
1221
1222 return 0;
1223 }
1224
1225 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1226 const u8 *mac,
1227 struct station_parameters *params)
1228 {
1229 struct ieee80211_local *local = wiphy_priv(wiphy);
1230 struct sta_info *sta;
1231 struct ieee80211_sub_if_data *sdata;
1232 int err;
1233 int layer2_update;
1234
1235 if (params->vlan) {
1236 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1237
1238 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1239 sdata->vif.type != NL80211_IFTYPE_AP)
1240 return -EINVAL;
1241 } else
1242 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1243
1244 if (ether_addr_equal(mac, sdata->vif.addr))
1245 return -EINVAL;
1246
1247 if (is_multicast_ether_addr(mac))
1248 return -EINVAL;
1249
1250 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1251 if (!sta)
1252 return -ENOMEM;
1253
1254 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1255 sta->sta.tdls = true;
1256
1257 err = sta_apply_parameters(local, sta, params);
1258 if (err) {
1259 sta_info_free(local, sta);
1260 return err;
1261 }
1262
1263 /*
1264 * for TDLS and for unassociated station, rate control should be
1265 * initialized only when rates are known and station is marked
1266 * authorized/associated
1267 */
1268 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1269 test_sta_flag(sta, WLAN_STA_ASSOC))
1270 rate_control_rate_init(sta);
1271
1272 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1273 sdata->vif.type == NL80211_IFTYPE_AP;
1274
1275 err = sta_info_insert_rcu(sta);
1276 if (err) {
1277 rcu_read_unlock();
1278 return err;
1279 }
1280
1281 if (layer2_update)
1282 ieee80211_send_layer2_update(sta);
1283
1284 rcu_read_unlock();
1285
1286 return 0;
1287 }
1288
1289 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1290 struct station_del_parameters *params)
1291 {
1292 struct ieee80211_sub_if_data *sdata;
1293
1294 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1295
1296 if (params->mac)
1297 return sta_info_destroy_addr_bss(sdata, params->mac);
1298
1299 sta_info_flush(sdata);
1300 return 0;
1301 }
1302
1303 static int ieee80211_change_station(struct wiphy *wiphy,
1304 struct net_device *dev, const u8 *mac,
1305 struct station_parameters *params)
1306 {
1307 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1308 struct ieee80211_local *local = wiphy_priv(wiphy);
1309 struct sta_info *sta;
1310 struct ieee80211_sub_if_data *vlansdata;
1311 enum cfg80211_station_type statype;
1312 int err;
1313
1314 mutex_lock(&local->sta_mtx);
1315
1316 sta = sta_info_get_bss(sdata, mac);
1317 if (!sta) {
1318 err = -ENOENT;
1319 goto out_err;
1320 }
1321
1322 switch (sdata->vif.type) {
1323 case NL80211_IFTYPE_MESH_POINT:
1324 if (sdata->u.mesh.user_mpm)
1325 statype = CFG80211_STA_MESH_PEER_USER;
1326 else
1327 statype = CFG80211_STA_MESH_PEER_KERNEL;
1328 break;
1329 case NL80211_IFTYPE_ADHOC:
1330 statype = CFG80211_STA_IBSS;
1331 break;
1332 case NL80211_IFTYPE_STATION:
1333 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1334 statype = CFG80211_STA_AP_STA;
1335 break;
1336 }
1337 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1338 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1339 else
1340 statype = CFG80211_STA_TDLS_PEER_SETUP;
1341 break;
1342 case NL80211_IFTYPE_AP:
1343 case NL80211_IFTYPE_AP_VLAN:
1344 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1345 statype = CFG80211_STA_AP_CLIENT;
1346 else
1347 statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1348 break;
1349 default:
1350 err = -EOPNOTSUPP;
1351 goto out_err;
1352 }
1353
1354 err = cfg80211_check_station_change(wiphy, params, statype);
1355 if (err)
1356 goto out_err;
1357
1358 if (params->vlan && params->vlan != sta->sdata->dev) {
1359 bool prev_4addr = false;
1360 bool new_4addr = false;
1361
1362 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1363
1364 if (params->vlan->ieee80211_ptr->use_4addr) {
1365 if (vlansdata->u.vlan.sta) {
1366 err = -EBUSY;
1367 goto out_err;
1368 }
1369
1370 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1371 new_4addr = true;
1372 __ieee80211_check_fast_rx_iface(vlansdata);
1373 }
1374
1375 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1376 sta->sdata->u.vlan.sta) {
1377 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1378 prev_4addr = true;
1379 }
1380
1381 sta->sdata = vlansdata;
1382 ieee80211_check_fast_xmit(sta);
1383
1384 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1385 prev_4addr != new_4addr) {
1386 if (new_4addr)
1387 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1388 else
1389 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1390 }
1391
1392 ieee80211_send_layer2_update(sta);
1393 }
1394
1395 err = sta_apply_parameters(local, sta, params);
1396 if (err)
1397 goto out_err;
1398
1399 mutex_unlock(&local->sta_mtx);
1400
1401 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1402 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1403 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1404 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1405 sta_info_tx_streams(sta) != 1) {
1406 ht_dbg(sta->sdata,
1407 "%pM just authorized and MIMO capable - update SMPS\n",
1408 sta->sta.addr);
1409 ieee80211_send_smps_action(sta->sdata,
1410 sta->sdata->bss->req_smps,
1411 sta->sta.addr,
1412 sta->sdata->vif.bss_conf.bssid);
1413 }
1414
1415 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1416 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1417 ieee80211_recalc_ps(local);
1418 ieee80211_recalc_ps_vif(sdata);
1419 }
1420
1421 return 0;
1422 out_err:
1423 mutex_unlock(&local->sta_mtx);
1424 return err;
1425 }
1426
1427 #ifdef CONFIG_MAC80211_MESH
1428 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1429 const u8 *dst, const u8 *next_hop)
1430 {
1431 struct ieee80211_sub_if_data *sdata;
1432 struct mesh_path *mpath;
1433 struct sta_info *sta;
1434
1435 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1436
1437 rcu_read_lock();
1438 sta = sta_info_get(sdata, next_hop);
1439 if (!sta) {
1440 rcu_read_unlock();
1441 return -ENOENT;
1442 }
1443
1444 mpath = mesh_path_add(sdata, dst);
1445 if (IS_ERR(mpath)) {
1446 rcu_read_unlock();
1447 return PTR_ERR(mpath);
1448 }
1449
1450 mesh_path_fix_nexthop(mpath, sta);
1451
1452 rcu_read_unlock();
1453 return 0;
1454 }
1455
1456 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1457 const u8 *dst)
1458 {
1459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1460
1461 if (dst)
1462 return mesh_path_del(sdata, dst);
1463
1464 mesh_path_flush_by_iface(sdata);
1465 return 0;
1466 }
1467
1468 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1469 const u8 *dst, const u8 *next_hop)
1470 {
1471 struct ieee80211_sub_if_data *sdata;
1472 struct mesh_path *mpath;
1473 struct sta_info *sta;
1474
1475 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1476
1477 rcu_read_lock();
1478
1479 sta = sta_info_get(sdata, next_hop);
1480 if (!sta) {
1481 rcu_read_unlock();
1482 return -ENOENT;
1483 }
1484
1485 mpath = mesh_path_lookup(sdata, dst);
1486 if (!mpath) {
1487 rcu_read_unlock();
1488 return -ENOENT;
1489 }
1490
1491 mesh_path_fix_nexthop(mpath, sta);
1492
1493 rcu_read_unlock();
1494 return 0;
1495 }
1496
1497 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1498 struct mpath_info *pinfo)
1499 {
1500 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1501
1502 if (next_hop_sta)
1503 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1504 else
1505 eth_zero_addr(next_hop);
1506
1507 memset(pinfo, 0, sizeof(*pinfo));
1508
1509 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1510
1511 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1512 MPATH_INFO_SN |
1513 MPATH_INFO_METRIC |
1514 MPATH_INFO_EXPTIME |
1515 MPATH_INFO_DISCOVERY_TIMEOUT |
1516 MPATH_INFO_DISCOVERY_RETRIES |
1517 MPATH_INFO_FLAGS;
1518
1519 pinfo->frame_qlen = mpath->frame_queue.qlen;
1520 pinfo->sn = mpath->sn;
1521 pinfo->metric = mpath->metric;
1522 if (time_before(jiffies, mpath->exp_time))
1523 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1524 pinfo->discovery_timeout =
1525 jiffies_to_msecs(mpath->discovery_timeout);
1526 pinfo->discovery_retries = mpath->discovery_retries;
1527 if (mpath->flags & MESH_PATH_ACTIVE)
1528 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1529 if (mpath->flags & MESH_PATH_RESOLVING)
1530 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1531 if (mpath->flags & MESH_PATH_SN_VALID)
1532 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1533 if (mpath->flags & MESH_PATH_FIXED)
1534 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1535 if (mpath->flags & MESH_PATH_RESOLVED)
1536 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1537 }
1538
1539 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1540 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1541
1542 {
1543 struct ieee80211_sub_if_data *sdata;
1544 struct mesh_path *mpath;
1545
1546 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1547
1548 rcu_read_lock();
1549 mpath = mesh_path_lookup(sdata, dst);
1550 if (!mpath) {
1551 rcu_read_unlock();
1552 return -ENOENT;
1553 }
1554 memcpy(dst, mpath->dst, ETH_ALEN);
1555 mpath_set_pinfo(mpath, next_hop, pinfo);
1556 rcu_read_unlock();
1557 return 0;
1558 }
1559
1560 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1561 int idx, u8 *dst, u8 *next_hop,
1562 struct mpath_info *pinfo)
1563 {
1564 struct ieee80211_sub_if_data *sdata;
1565 struct mesh_path *mpath;
1566
1567 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1568
1569 rcu_read_lock();
1570 mpath = mesh_path_lookup_by_idx(sdata, idx);
1571 if (!mpath) {
1572 rcu_read_unlock();
1573 return -ENOENT;
1574 }
1575 memcpy(dst, mpath->dst, ETH_ALEN);
1576 mpath_set_pinfo(mpath, next_hop, pinfo);
1577 rcu_read_unlock();
1578 return 0;
1579 }
1580
1581 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1582 struct mpath_info *pinfo)
1583 {
1584 memset(pinfo, 0, sizeof(*pinfo));
1585 memcpy(mpp, mpath->mpp, ETH_ALEN);
1586
1587 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1588 }
1589
1590 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1591 u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1592
1593 {
1594 struct ieee80211_sub_if_data *sdata;
1595 struct mesh_path *mpath;
1596
1597 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1598
1599 rcu_read_lock();
1600 mpath = mpp_path_lookup(sdata, dst);
1601 if (!mpath) {
1602 rcu_read_unlock();
1603 return -ENOENT;
1604 }
1605 memcpy(dst, mpath->dst, ETH_ALEN);
1606 mpp_set_pinfo(mpath, mpp, pinfo);
1607 rcu_read_unlock();
1608 return 0;
1609 }
1610
1611 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1612 int idx, u8 *dst, u8 *mpp,
1613 struct mpath_info *pinfo)
1614 {
1615 struct ieee80211_sub_if_data *sdata;
1616 struct mesh_path *mpath;
1617
1618 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1619
1620 rcu_read_lock();
1621 mpath = mpp_path_lookup_by_idx(sdata, idx);
1622 if (!mpath) {
1623 rcu_read_unlock();
1624 return -ENOENT;
1625 }
1626 memcpy(dst, mpath->dst, ETH_ALEN);
1627 mpp_set_pinfo(mpath, mpp, pinfo);
1628 rcu_read_unlock();
1629 return 0;
1630 }
1631
1632 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1633 struct net_device *dev,
1634 struct mesh_config *conf)
1635 {
1636 struct ieee80211_sub_if_data *sdata;
1637 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1638
1639 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1640 return 0;
1641 }
1642
1643 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1644 {
1645 return (mask >> (parm-1)) & 0x1;
1646 }
1647
1648 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1649 const struct mesh_setup *setup)
1650 {
1651 u8 *new_ie;
1652 const u8 *old_ie;
1653 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1654 struct ieee80211_sub_if_data, u.mesh);
1655
1656 /* allocate information elements */
1657 new_ie = NULL;
1658 old_ie = ifmsh->ie;
1659
1660 if (setup->ie_len) {
1661 new_ie = kmemdup(setup->ie, setup->ie_len,
1662 GFP_KERNEL);
1663 if (!new_ie)
1664 return -ENOMEM;
1665 }
1666 ifmsh->ie_len = setup->ie_len;
1667 ifmsh->ie = new_ie;
1668 kfree(old_ie);
1669
1670 /* now copy the rest of the setup parameters */
1671 ifmsh->mesh_id_len = setup->mesh_id_len;
1672 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1673 ifmsh->mesh_sp_id = setup->sync_method;
1674 ifmsh->mesh_pp_id = setup->path_sel_proto;
1675 ifmsh->mesh_pm_id = setup->path_metric;
1676 ifmsh->user_mpm = setup->user_mpm;
1677 ifmsh->mesh_auth_id = setup->auth_id;
1678 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1679 if (setup->is_authenticated)
1680 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1681 if (setup->is_secure)
1682 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1683
1684 /* mcast rate setting in Mesh Node */
1685 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1686 sizeof(setup->mcast_rate));
1687 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1688
1689 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1690 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1691
1692 return 0;
1693 }
1694
1695 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1696 struct net_device *dev, u32 mask,
1697 const struct mesh_config *nconf)
1698 {
1699 struct mesh_config *conf;
1700 struct ieee80211_sub_if_data *sdata;
1701 struct ieee80211_if_mesh *ifmsh;
1702
1703 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704 ifmsh = &sdata->u.mesh;
1705
1706 /* Set the config options which we are interested in setting */
1707 conf = &(sdata->u.mesh.mshcfg);
1708 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1709 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1710 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1711 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1712 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1713 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1714 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1715 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1716 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1717 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1718 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1719 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1720 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1721 conf->element_ttl = nconf->element_ttl;
1722 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1723 if (ifmsh->user_mpm)
1724 return -EBUSY;
1725 conf->auto_open_plinks = nconf->auto_open_plinks;
1726 }
1727 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1728 conf->dot11MeshNbrOffsetMaxNeighbor =
1729 nconf->dot11MeshNbrOffsetMaxNeighbor;
1730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1731 conf->dot11MeshHWMPmaxPREQretries =
1732 nconf->dot11MeshHWMPmaxPREQretries;
1733 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1734 conf->path_refresh_time = nconf->path_refresh_time;
1735 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1736 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1737 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1738 conf->dot11MeshHWMPactivePathTimeout =
1739 nconf->dot11MeshHWMPactivePathTimeout;
1740 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1741 conf->dot11MeshHWMPpreqMinInterval =
1742 nconf->dot11MeshHWMPpreqMinInterval;
1743 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1744 conf->dot11MeshHWMPperrMinInterval =
1745 nconf->dot11MeshHWMPperrMinInterval;
1746 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1747 mask))
1748 conf->dot11MeshHWMPnetDiameterTraversalTime =
1749 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1750 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1751 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1752 ieee80211_mesh_root_setup(ifmsh);
1753 }
1754 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1755 /* our current gate announcement implementation rides on root
1756 * announcements, so require this ifmsh to also be a root node
1757 * */
1758 if (nconf->dot11MeshGateAnnouncementProtocol &&
1759 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1760 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1761 ieee80211_mesh_root_setup(ifmsh);
1762 }
1763 conf->dot11MeshGateAnnouncementProtocol =
1764 nconf->dot11MeshGateAnnouncementProtocol;
1765 }
1766 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1767 conf->dot11MeshHWMPRannInterval =
1768 nconf->dot11MeshHWMPRannInterval;
1769 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1770 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1771 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1772 /* our RSSI threshold implementation is supported only for
1773 * devices that report signal in dBm.
1774 */
1775 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1776 return -ENOTSUPP;
1777 conf->rssi_threshold = nconf->rssi_threshold;
1778 }
1779 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1780 conf->ht_opmode = nconf->ht_opmode;
1781 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1782 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1783 }
1784 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1785 conf->dot11MeshHWMPactivePathToRootTimeout =
1786 nconf->dot11MeshHWMPactivePathToRootTimeout;
1787 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1788 conf->dot11MeshHWMProotInterval =
1789 nconf->dot11MeshHWMProotInterval;
1790 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1791 conf->dot11MeshHWMPconfirmationInterval =
1792 nconf->dot11MeshHWMPconfirmationInterval;
1793 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1794 conf->power_mode = nconf->power_mode;
1795 ieee80211_mps_local_status_update(sdata);
1796 }
1797 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1798 conf->dot11MeshAwakeWindowDuration =
1799 nconf->dot11MeshAwakeWindowDuration;
1800 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1801 conf->plink_timeout = nconf->plink_timeout;
1802 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1803 return 0;
1804 }
1805
1806 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1807 const struct mesh_config *conf,
1808 const struct mesh_setup *setup)
1809 {
1810 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1811 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1812 int err;
1813
1814 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1815 err = copy_mesh_setup(ifmsh, setup);
1816 if (err)
1817 return err;
1818
1819 /* can mesh use other SMPS modes? */
1820 sdata->smps_mode = IEEE80211_SMPS_OFF;
1821 sdata->needed_rx_chains = sdata->local->rx_chains;
1822
1823 mutex_lock(&sdata->local->mtx);
1824 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1825 IEEE80211_CHANCTX_SHARED);
1826 mutex_unlock(&sdata->local->mtx);
1827 if (err)
1828 return err;
1829
1830 return ieee80211_start_mesh(sdata);
1831 }
1832
1833 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1834 {
1835 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836
1837 ieee80211_stop_mesh(sdata);
1838 mutex_lock(&sdata->local->mtx);
1839 ieee80211_vif_release_channel(sdata);
1840 mutex_unlock(&sdata->local->mtx);
1841
1842 return 0;
1843 }
1844 #endif
1845
1846 static int ieee80211_change_bss(struct wiphy *wiphy,
1847 struct net_device *dev,
1848 struct bss_parameters *params)
1849 {
1850 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1851 enum nl80211_band band;
1852 u32 changed = 0;
1853
1854 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1855 return -ENOENT;
1856
1857 band = ieee80211_get_sdata_band(sdata);
1858
1859 if (params->use_cts_prot >= 0) {
1860 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1861 changed |= BSS_CHANGED_ERP_CTS_PROT;
1862 }
1863 if (params->use_short_preamble >= 0) {
1864 sdata->vif.bss_conf.use_short_preamble =
1865 params->use_short_preamble;
1866 changed |= BSS_CHANGED_ERP_PREAMBLE;
1867 }
1868
1869 if (!sdata->vif.bss_conf.use_short_slot &&
1870 band == NL80211_BAND_5GHZ) {
1871 sdata->vif.bss_conf.use_short_slot = true;
1872 changed |= BSS_CHANGED_ERP_SLOT;
1873 }
1874
1875 if (params->use_short_slot_time >= 0) {
1876 sdata->vif.bss_conf.use_short_slot =
1877 params->use_short_slot_time;
1878 changed |= BSS_CHANGED_ERP_SLOT;
1879 }
1880
1881 if (params->basic_rates) {
1882 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1883 wiphy->bands[band],
1884 params->basic_rates,
1885 params->basic_rates_len,
1886 &sdata->vif.bss_conf.basic_rates);
1887 changed |= BSS_CHANGED_BASIC_RATES;
1888 }
1889
1890 if (params->ap_isolate >= 0) {
1891 if (params->ap_isolate)
1892 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1893 else
1894 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1895 ieee80211_check_fast_rx_iface(sdata);
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 void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2025 {
2026 ieee80211_scan_cancel(wiphy_priv(wiphy));
2027 }
2028
2029 static int
2030 ieee80211_sched_scan_start(struct wiphy *wiphy,
2031 struct net_device *dev,
2032 struct cfg80211_sched_scan_request *req)
2033 {
2034 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2035
2036 if (!sdata->local->ops->sched_scan_start)
2037 return -EOPNOTSUPP;
2038
2039 return ieee80211_request_sched_scan_start(sdata, req);
2040 }
2041
2042 static int
2043 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2044 {
2045 struct ieee80211_local *local = wiphy_priv(wiphy);
2046
2047 if (!local->ops->sched_scan_stop)
2048 return -EOPNOTSUPP;
2049
2050 return ieee80211_request_sched_scan_stop(local);
2051 }
2052
2053 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2054 struct cfg80211_auth_request *req)
2055 {
2056 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2057 }
2058
2059 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2060 struct cfg80211_assoc_request *req)
2061 {
2062 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2063 }
2064
2065 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2066 struct cfg80211_deauth_request *req)
2067 {
2068 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2069 }
2070
2071 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2072 struct cfg80211_disassoc_request *req)
2073 {
2074 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2075 }
2076
2077 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2078 struct cfg80211_ibss_params *params)
2079 {
2080 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2081 }
2082
2083 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2084 {
2085 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2086 }
2087
2088 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2089 struct ocb_setup *setup)
2090 {
2091 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2092 }
2093
2094 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2095 {
2096 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2097 }
2098
2099 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2100 int rate[NUM_NL80211_BANDS])
2101 {
2102 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2103
2104 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2105 sizeof(int) * NUM_NL80211_BANDS);
2106
2107 return 0;
2108 }
2109
2110 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2111 {
2112 struct ieee80211_local *local = wiphy_priv(wiphy);
2113 int err;
2114
2115 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2116 ieee80211_check_fast_xmit_all(local);
2117
2118 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2119
2120 if (err) {
2121 ieee80211_check_fast_xmit_all(local);
2122 return err;
2123 }
2124 }
2125
2126 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2127 (changed & WIPHY_PARAM_DYN_ACK)) {
2128 s16 coverage_class;
2129
2130 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2131 wiphy->coverage_class : -1;
2132 err = drv_set_coverage_class(local, coverage_class);
2133
2134 if (err)
2135 return err;
2136 }
2137
2138 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2139 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2140
2141 if (err)
2142 return err;
2143 }
2144
2145 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2146 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2147 return -EINVAL;
2148 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2149 }
2150 if (changed & WIPHY_PARAM_RETRY_LONG) {
2151 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2152 return -EINVAL;
2153 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2154 }
2155 if (changed &
2156 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2157 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2158
2159 return 0;
2160 }
2161
2162 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2163 struct wireless_dev *wdev,
2164 enum nl80211_tx_power_setting type, int mbm)
2165 {
2166 struct ieee80211_local *local = wiphy_priv(wiphy);
2167 struct ieee80211_sub_if_data *sdata;
2168 enum nl80211_tx_power_setting txp_type = type;
2169 bool update_txp_type = false;
2170
2171 if (wdev) {
2172 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2173
2174 switch (type) {
2175 case NL80211_TX_POWER_AUTOMATIC:
2176 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2177 txp_type = NL80211_TX_POWER_LIMITED;
2178 break;
2179 case NL80211_TX_POWER_LIMITED:
2180 case NL80211_TX_POWER_FIXED:
2181 if (mbm < 0 || (mbm % 100))
2182 return -EOPNOTSUPP;
2183 sdata->user_power_level = MBM_TO_DBM(mbm);
2184 break;
2185 }
2186
2187 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2188 update_txp_type = true;
2189 sdata->vif.bss_conf.txpower_type = txp_type;
2190 }
2191
2192 ieee80211_recalc_txpower(sdata, update_txp_type);
2193
2194 return 0;
2195 }
2196
2197 switch (type) {
2198 case NL80211_TX_POWER_AUTOMATIC:
2199 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2200 txp_type = NL80211_TX_POWER_LIMITED;
2201 break;
2202 case NL80211_TX_POWER_LIMITED:
2203 case NL80211_TX_POWER_FIXED:
2204 if (mbm < 0 || (mbm % 100))
2205 return -EOPNOTSUPP;
2206 local->user_power_level = MBM_TO_DBM(mbm);
2207 break;
2208 }
2209
2210 mutex_lock(&local->iflist_mtx);
2211 list_for_each_entry(sdata, &local->interfaces, list) {
2212 sdata->user_power_level = local->user_power_level;
2213 if (txp_type != sdata->vif.bss_conf.txpower_type)
2214 update_txp_type = true;
2215 sdata->vif.bss_conf.txpower_type = txp_type;
2216 }
2217 list_for_each_entry(sdata, &local->interfaces, list)
2218 ieee80211_recalc_txpower(sdata, update_txp_type);
2219 mutex_unlock(&local->iflist_mtx);
2220
2221 return 0;
2222 }
2223
2224 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2225 struct wireless_dev *wdev,
2226 int *dbm)
2227 {
2228 struct ieee80211_local *local = wiphy_priv(wiphy);
2229 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2230
2231 if (local->ops->get_txpower)
2232 return drv_get_txpower(local, sdata, dbm);
2233
2234 if (!local->use_chanctx)
2235 *dbm = local->hw.conf.power_level;
2236 else
2237 *dbm = sdata->vif.bss_conf.txpower;
2238
2239 return 0;
2240 }
2241
2242 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2243 const u8 *addr)
2244 {
2245 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2246
2247 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2248
2249 return 0;
2250 }
2251
2252 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2253 {
2254 struct ieee80211_local *local = wiphy_priv(wiphy);
2255
2256 drv_rfkill_poll(local);
2257 }
2258
2259 #ifdef CONFIG_NL80211_TESTMODE
2260 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2261 struct wireless_dev *wdev,
2262 void *data, int len)
2263 {
2264 struct ieee80211_local *local = wiphy_priv(wiphy);
2265 struct ieee80211_vif *vif = NULL;
2266
2267 if (!local->ops->testmode_cmd)
2268 return -EOPNOTSUPP;
2269
2270 if (wdev) {
2271 struct ieee80211_sub_if_data *sdata;
2272
2273 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2274 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2275 vif = &sdata->vif;
2276 }
2277
2278 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2279 }
2280
2281 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2282 struct sk_buff *skb,
2283 struct netlink_callback *cb,
2284 void *data, int len)
2285 {
2286 struct ieee80211_local *local = wiphy_priv(wiphy);
2287
2288 if (!local->ops->testmode_dump)
2289 return -EOPNOTSUPP;
2290
2291 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2292 }
2293 #endif
2294
2295 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2296 enum ieee80211_smps_mode smps_mode)
2297 {
2298 struct sta_info *sta;
2299 enum ieee80211_smps_mode old_req;
2300
2301 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2302 return -EINVAL;
2303
2304 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2305 return 0;
2306
2307 old_req = sdata->u.ap.req_smps;
2308 sdata->u.ap.req_smps = smps_mode;
2309
2310 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2311 if (old_req == smps_mode ||
2312 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2313 return 0;
2314
2315 /* If no associated stations, there's no need to do anything */
2316 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2317 sdata->smps_mode = smps_mode;
2318 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2319 return 0;
2320 }
2321
2322 ht_dbg(sdata,
2323 "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2324 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2325
2326 mutex_lock(&sdata->local->sta_mtx);
2327 list_for_each_entry(sta, &sdata->local->sta_list, list) {
2328 /*
2329 * Only stations associated to our AP and
2330 * associated VLANs
2331 */
2332 if (sta->sdata->bss != &sdata->u.ap)
2333 continue;
2334
2335 /* This station doesn't support MIMO - skip it */
2336 if (sta_info_tx_streams(sta) == 1)
2337 continue;
2338
2339 /*
2340 * Don't wake up a STA just to send the action frame
2341 * unless we are getting more restrictive.
2342 */
2343 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2344 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2345 smps_mode)) {
2346 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2347 sta->sta.addr);
2348 continue;
2349 }
2350
2351 /*
2352 * If the STA is not authorized, wait until it gets
2353 * authorized and the action frame will be sent then.
2354 */
2355 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2356 continue;
2357
2358 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2359 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2360 sdata->vif.bss_conf.bssid);
2361 }
2362 mutex_unlock(&sdata->local->sta_mtx);
2363
2364 sdata->smps_mode = smps_mode;
2365 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2366
2367 return 0;
2368 }
2369
2370 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2371 enum ieee80211_smps_mode smps_mode)
2372 {
2373 const u8 *ap;
2374 enum ieee80211_smps_mode old_req;
2375 int err;
2376 struct sta_info *sta;
2377 bool tdls_peer_found = false;
2378
2379 lockdep_assert_held(&sdata->wdev.mtx);
2380
2381 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2382 return -EINVAL;
2383
2384 old_req = sdata->u.mgd.req_smps;
2385 sdata->u.mgd.req_smps = smps_mode;
2386
2387 if (old_req == smps_mode &&
2388 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2389 return 0;
2390
2391 /*
2392 * If not associated, or current association is not an HT
2393 * association, there's no need to do anything, just store
2394 * the new value until we associate.
2395 */
2396 if (!sdata->u.mgd.associated ||
2397 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2398 return 0;
2399
2400 ap = sdata->u.mgd.associated->bssid;
2401
2402 rcu_read_lock();
2403 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2404 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2405 !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2406 continue;
2407
2408 tdls_peer_found = true;
2409 break;
2410 }
2411 rcu_read_unlock();
2412
2413 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2414 if (tdls_peer_found || !sdata->u.mgd.powersave)
2415 smps_mode = IEEE80211_SMPS_OFF;
2416 else
2417 smps_mode = IEEE80211_SMPS_DYNAMIC;
2418 }
2419
2420 /* send SM PS frame to AP */
2421 err = ieee80211_send_smps_action(sdata, smps_mode,
2422 ap, ap);
2423 if (err)
2424 sdata->u.mgd.req_smps = old_req;
2425 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2426 ieee80211_teardown_tdls_peers(sdata);
2427
2428 return err;
2429 }
2430
2431 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2432 bool enabled, int timeout)
2433 {
2434 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2435 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2436
2437 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2438 return -EOPNOTSUPP;
2439
2440 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2441 return -EOPNOTSUPP;
2442
2443 if (enabled == sdata->u.mgd.powersave &&
2444 timeout == local->dynamic_ps_forced_timeout)
2445 return 0;
2446
2447 sdata->u.mgd.powersave = enabled;
2448 local->dynamic_ps_forced_timeout = timeout;
2449
2450 /* no change, but if automatic follow powersave */
2451 sdata_lock(sdata);
2452 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2453 sdata_unlock(sdata);
2454
2455 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2456 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2457
2458 ieee80211_recalc_ps(local);
2459 ieee80211_recalc_ps_vif(sdata);
2460
2461 return 0;
2462 }
2463
2464 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2465 struct net_device *dev,
2466 s32 rssi_thold, u32 rssi_hyst)
2467 {
2468 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2469 struct ieee80211_vif *vif = &sdata->vif;
2470 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2471
2472 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2473 rssi_hyst == bss_conf->cqm_rssi_hyst)
2474 return 0;
2475
2476 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2477 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2478 return -EOPNOTSUPP;
2479
2480 bss_conf->cqm_rssi_thold = rssi_thold;
2481 bss_conf->cqm_rssi_hyst = rssi_hyst;
2482 sdata->u.mgd.last_cqm_event_signal = 0;
2483
2484 /* tell the driver upon association, unless already associated */
2485 if (sdata->u.mgd.associated &&
2486 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2487 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2488
2489 return 0;
2490 }
2491
2492 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2493 struct net_device *dev,
2494 const u8 *addr,
2495 const struct cfg80211_bitrate_mask *mask)
2496 {
2497 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2498 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2499 int i, ret;
2500
2501 if (!ieee80211_sdata_running(sdata))
2502 return -ENETDOWN;
2503
2504 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2505 ret = drv_set_bitrate_mask(local, sdata, mask);
2506 if (ret)
2507 return ret;
2508 }
2509
2510 for (i = 0; i < NUM_NL80211_BANDS; i++) {
2511 struct ieee80211_supported_band *sband = wiphy->bands[i];
2512 int j;
2513
2514 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2515 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2516 sizeof(mask->control[i].ht_mcs));
2517 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2518 mask->control[i].vht_mcs,
2519 sizeof(mask->control[i].vht_mcs));
2520
2521 sdata->rc_has_mcs_mask[i] = false;
2522 sdata->rc_has_vht_mcs_mask[i] = false;
2523 if (!sband)
2524 continue;
2525
2526 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2527 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2528 sdata->rc_has_mcs_mask[i] = true;
2529 break;
2530 }
2531 }
2532
2533 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2534 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2535 sdata->rc_has_vht_mcs_mask[i] = true;
2536 break;
2537 }
2538 }
2539 }
2540
2541 return 0;
2542 }
2543
2544 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2545 struct net_device *dev,
2546 struct cfg80211_chan_def *chandef,
2547 u32 cac_time_ms)
2548 {
2549 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2550 struct ieee80211_local *local = sdata->local;
2551 int err;
2552
2553 mutex_lock(&local->mtx);
2554 if (!list_empty(&local->roc_list) || local->scanning) {
2555 err = -EBUSY;
2556 goto out_unlock;
2557 }
2558
2559 /* whatever, but channel contexts should not complain about that one */
2560 sdata->smps_mode = IEEE80211_SMPS_OFF;
2561 sdata->needed_rx_chains = local->rx_chains;
2562
2563 err = ieee80211_vif_use_channel(sdata, chandef,
2564 IEEE80211_CHANCTX_SHARED);
2565 if (err)
2566 goto out_unlock;
2567
2568 ieee80211_queue_delayed_work(&sdata->local->hw,
2569 &sdata->dfs_cac_timer_work,
2570 msecs_to_jiffies(cac_time_ms));
2571
2572 out_unlock:
2573 mutex_unlock(&local->mtx);
2574 return err;
2575 }
2576
2577 static struct cfg80211_beacon_data *
2578 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2579 {
2580 struct cfg80211_beacon_data *new_beacon;
2581 u8 *pos;
2582 int len;
2583
2584 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2585 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2586 beacon->probe_resp_len;
2587
2588 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2589 if (!new_beacon)
2590 return NULL;
2591
2592 pos = (u8 *)(new_beacon + 1);
2593 if (beacon->head_len) {
2594 new_beacon->head_len = beacon->head_len;
2595 new_beacon->head = pos;
2596 memcpy(pos, beacon->head, beacon->head_len);
2597 pos += beacon->head_len;
2598 }
2599 if (beacon->tail_len) {
2600 new_beacon->tail_len = beacon->tail_len;
2601 new_beacon->tail = pos;
2602 memcpy(pos, beacon->tail, beacon->tail_len);
2603 pos += beacon->tail_len;
2604 }
2605 if (beacon->beacon_ies_len) {
2606 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2607 new_beacon->beacon_ies = pos;
2608 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2609 pos += beacon->beacon_ies_len;
2610 }
2611 if (beacon->proberesp_ies_len) {
2612 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2613 new_beacon->proberesp_ies = pos;
2614 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2615 pos += beacon->proberesp_ies_len;
2616 }
2617 if (beacon->assocresp_ies_len) {
2618 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2619 new_beacon->assocresp_ies = pos;
2620 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2621 pos += beacon->assocresp_ies_len;
2622 }
2623 if (beacon->probe_resp_len) {
2624 new_beacon->probe_resp_len = beacon->probe_resp_len;
2625 beacon->probe_resp = pos;
2626 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2627 pos += beacon->probe_resp_len;
2628 }
2629
2630 return new_beacon;
2631 }
2632
2633 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2634 {
2635 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2636
2637 ieee80211_queue_work(&sdata->local->hw,
2638 &sdata->csa_finalize_work);
2639 }
2640 EXPORT_SYMBOL(ieee80211_csa_finish);
2641
2642 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2643 u32 *changed)
2644 {
2645 int err;
2646
2647 switch (sdata->vif.type) {
2648 case NL80211_IFTYPE_AP:
2649 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2650 NULL);
2651 kfree(sdata->u.ap.next_beacon);
2652 sdata->u.ap.next_beacon = NULL;
2653
2654 if (err < 0)
2655 return err;
2656 *changed |= err;
2657 break;
2658 case NL80211_IFTYPE_ADHOC:
2659 err = ieee80211_ibss_finish_csa(sdata);
2660 if (err < 0)
2661 return err;
2662 *changed |= err;
2663 break;
2664 #ifdef CONFIG_MAC80211_MESH
2665 case NL80211_IFTYPE_MESH_POINT:
2666 err = ieee80211_mesh_finish_csa(sdata);
2667 if (err < 0)
2668 return err;
2669 *changed |= err;
2670 break;
2671 #endif
2672 default:
2673 WARN_ON(1);
2674 return -EINVAL;
2675 }
2676
2677 return 0;
2678 }
2679
2680 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2681 {
2682 struct ieee80211_local *local = sdata->local;
2683 u32 changed = 0;
2684 int err;
2685
2686 sdata_assert_lock(sdata);
2687 lockdep_assert_held(&local->mtx);
2688 lockdep_assert_held(&local->chanctx_mtx);
2689
2690 /*
2691 * using reservation isn't immediate as it may be deferred until later
2692 * with multi-vif. once reservation is complete it will re-schedule the
2693 * work with no reserved_chanctx so verify chandef to check if it
2694 * completed successfully
2695 */
2696
2697 if (sdata->reserved_chanctx) {
2698 /*
2699 * with multi-vif csa driver may call ieee80211_csa_finish()
2700 * many times while waiting for other interfaces to use their
2701 * reservations
2702 */
2703 if (sdata->reserved_ready)
2704 return 0;
2705
2706 return ieee80211_vif_use_reserved_context(sdata);
2707 }
2708
2709 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2710 &sdata->csa_chandef))
2711 return -EINVAL;
2712
2713 sdata->vif.csa_active = false;
2714
2715 err = ieee80211_set_after_csa_beacon(sdata, &changed);
2716 if (err)
2717 return err;
2718
2719 ieee80211_bss_info_change_notify(sdata, changed);
2720
2721 if (sdata->csa_block_tx) {
2722 ieee80211_wake_vif_queues(local, sdata,
2723 IEEE80211_QUEUE_STOP_REASON_CSA);
2724 sdata->csa_block_tx = false;
2725 }
2726
2727 err = drv_post_channel_switch(sdata);
2728 if (err)
2729 return err;
2730
2731 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2732
2733 return 0;
2734 }
2735
2736 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2737 {
2738 if (__ieee80211_csa_finalize(sdata)) {
2739 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2740 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2741 GFP_KERNEL);
2742 }
2743 }
2744
2745 void ieee80211_csa_finalize_work(struct work_struct *work)
2746 {
2747 struct ieee80211_sub_if_data *sdata =
2748 container_of(work, struct ieee80211_sub_if_data,
2749 csa_finalize_work);
2750 struct ieee80211_local *local = sdata->local;
2751
2752 sdata_lock(sdata);
2753 mutex_lock(&local->mtx);
2754 mutex_lock(&local->chanctx_mtx);
2755
2756 /* AP might have been stopped while waiting for the lock. */
2757 if (!sdata->vif.csa_active)
2758 goto unlock;
2759
2760 if (!ieee80211_sdata_running(sdata))
2761 goto unlock;
2762
2763 ieee80211_csa_finalize(sdata);
2764
2765 unlock:
2766 mutex_unlock(&local->chanctx_mtx);
2767 mutex_unlock(&local->mtx);
2768 sdata_unlock(sdata);
2769 }
2770
2771 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2772 struct cfg80211_csa_settings *params,
2773 u32 *changed)
2774 {
2775 struct ieee80211_csa_settings csa = {};
2776 int err;
2777
2778 switch (sdata->vif.type) {
2779 case NL80211_IFTYPE_AP:
2780 sdata->u.ap.next_beacon =
2781 cfg80211_beacon_dup(&params->beacon_after);
2782 if (!sdata->u.ap.next_beacon)
2783 return -ENOMEM;
2784
2785 /*
2786 * With a count of 0, we don't have to wait for any
2787 * TBTT before switching, so complete the CSA
2788 * immediately. In theory, with a count == 1 we
2789 * should delay the switch until just before the next
2790 * TBTT, but that would complicate things so we switch
2791 * immediately too. If we would delay the switch
2792 * until the next TBTT, we would have to set the probe
2793 * response here.
2794 *
2795 * TODO: A channel switch with count <= 1 without
2796 * sending a CSA action frame is kind of useless,
2797 * because the clients won't know we're changing
2798 * channels. The action frame must be implemented
2799 * either here or in the userspace.
2800 */
2801 if (params->count <= 1)
2802 break;
2803
2804 if ((params->n_counter_offsets_beacon >
2805 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2806 (params->n_counter_offsets_presp >
2807 IEEE80211_MAX_CSA_COUNTERS_NUM))
2808 return -EINVAL;
2809
2810 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2811 csa.counter_offsets_presp = params->counter_offsets_presp;
2812 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2813 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2814 csa.count = params->count;
2815
2816 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2817 if (err < 0) {
2818 kfree(sdata->u.ap.next_beacon);
2819 return err;
2820 }
2821 *changed |= err;
2822
2823 break;
2824 case NL80211_IFTYPE_ADHOC:
2825 if (!sdata->vif.bss_conf.ibss_joined)
2826 return -EINVAL;
2827
2828 if (params->chandef.width != sdata->u.ibss.chandef.width)
2829 return -EINVAL;
2830
2831 switch (params->chandef.width) {
2832 case NL80211_CHAN_WIDTH_40:
2833 if (cfg80211_get_chandef_type(&params->chandef) !=
2834 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2835 return -EINVAL;
2836 case NL80211_CHAN_WIDTH_5:
2837 case NL80211_CHAN_WIDTH_10:
2838 case NL80211_CHAN_WIDTH_20_NOHT:
2839 case NL80211_CHAN_WIDTH_20:
2840 break;
2841 default:
2842 return -EINVAL;
2843 }
2844
2845 /* changes into another band are not supported */
2846 if (sdata->u.ibss.chandef.chan->band !=
2847 params->chandef.chan->band)
2848 return -EINVAL;
2849
2850 /* see comments in the NL80211_IFTYPE_AP block */
2851 if (params->count > 1) {
2852 err = ieee80211_ibss_csa_beacon(sdata, params);
2853 if (err < 0)
2854 return err;
2855 *changed |= err;
2856 }
2857
2858 ieee80211_send_action_csa(sdata, params);
2859
2860 break;
2861 #ifdef CONFIG_MAC80211_MESH
2862 case NL80211_IFTYPE_MESH_POINT: {
2863 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2864
2865 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2866 return -EINVAL;
2867
2868 /* changes into another band are not supported */
2869 if (sdata->vif.bss_conf.chandef.chan->band !=
2870 params->chandef.chan->band)
2871 return -EINVAL;
2872
2873 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2874 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2875 if (!ifmsh->pre_value)
2876 ifmsh->pre_value = 1;
2877 else
2878 ifmsh->pre_value++;
2879 }
2880
2881 /* see comments in the NL80211_IFTYPE_AP block */
2882 if (params->count > 1) {
2883 err = ieee80211_mesh_csa_beacon(sdata, params);
2884 if (err < 0) {
2885 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2886 return err;
2887 }
2888 *changed |= err;
2889 }
2890
2891 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2892 ieee80211_send_action_csa(sdata, params);
2893
2894 break;
2895 }
2896 #endif
2897 default:
2898 return -EOPNOTSUPP;
2899 }
2900
2901 return 0;
2902 }
2903
2904 static int
2905 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2906 struct cfg80211_csa_settings *params)
2907 {
2908 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2909 struct ieee80211_local *local = sdata->local;
2910 struct ieee80211_channel_switch ch_switch;
2911 struct ieee80211_chanctx_conf *conf;
2912 struct ieee80211_chanctx *chanctx;
2913 u32 changed = 0;
2914 int err;
2915
2916 sdata_assert_lock(sdata);
2917 lockdep_assert_held(&local->mtx);
2918
2919 if (!list_empty(&local->roc_list) || local->scanning)
2920 return -EBUSY;
2921
2922 if (sdata->wdev.cac_started)
2923 return -EBUSY;
2924
2925 if (cfg80211_chandef_identical(&params->chandef,
2926 &sdata->vif.bss_conf.chandef))
2927 return -EINVAL;
2928
2929 /* don't allow another channel switch if one is already active. */
2930 if (sdata->vif.csa_active)
2931 return -EBUSY;
2932
2933 mutex_lock(&local->chanctx_mtx);
2934 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2935 lockdep_is_held(&local->chanctx_mtx));
2936 if (!conf) {
2937 err = -EBUSY;
2938 goto out;
2939 }
2940
2941 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2942 if (!chanctx) {
2943 err = -EBUSY;
2944 goto out;
2945 }
2946
2947 ch_switch.timestamp = 0;
2948 ch_switch.device_timestamp = 0;
2949 ch_switch.block_tx = params->block_tx;
2950 ch_switch.chandef = params->chandef;
2951 ch_switch.count = params->count;
2952
2953 err = drv_pre_channel_switch(sdata, &ch_switch);
2954 if (err)
2955 goto out;
2956
2957 err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2958 chanctx->mode,
2959 params->radar_required);
2960 if (err)
2961 goto out;
2962
2963 /* if reservation is invalid then this will fail */
2964 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2965 if (err) {
2966 ieee80211_vif_unreserve_chanctx(sdata);
2967 goto out;
2968 }
2969
2970 err = ieee80211_set_csa_beacon(sdata, params, &changed);
2971 if (err) {
2972 ieee80211_vif_unreserve_chanctx(sdata);
2973 goto out;
2974 }
2975
2976 sdata->csa_chandef = params->chandef;
2977 sdata->csa_block_tx = params->block_tx;
2978 sdata->vif.csa_active = true;
2979
2980 if (sdata->csa_block_tx)
2981 ieee80211_stop_vif_queues(local, sdata,
2982 IEEE80211_QUEUE_STOP_REASON_CSA);
2983
2984 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2985 params->count);
2986
2987 if (changed) {
2988 ieee80211_bss_info_change_notify(sdata, changed);
2989 drv_channel_switch_beacon(sdata, &params->chandef);
2990 } else {
2991 /* if the beacon didn't change, we can finalize immediately */
2992 ieee80211_csa_finalize(sdata);
2993 }
2994
2995 out:
2996 mutex_unlock(&local->chanctx_mtx);
2997 return err;
2998 }
2999
3000 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3001 struct cfg80211_csa_settings *params)
3002 {
3003 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3004 struct ieee80211_local *local = sdata->local;
3005 int err;
3006
3007 mutex_lock(&local->mtx);
3008 err = __ieee80211_channel_switch(wiphy, dev, params);
3009 mutex_unlock(&local->mtx);
3010
3011 return err;
3012 }
3013
3014 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3015 {
3016 lockdep_assert_held(&local->mtx);
3017
3018 local->roc_cookie_counter++;
3019
3020 /* wow, you wrapped 64 bits ... more likely a bug */
3021 if (WARN_ON(local->roc_cookie_counter == 0))
3022 local->roc_cookie_counter++;
3023
3024 return local->roc_cookie_counter;
3025 }
3026
3027 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3028 u64 *cookie, gfp_t gfp)
3029 {
3030 unsigned long spin_flags;
3031 struct sk_buff *ack_skb;
3032 int id;
3033
3034 ack_skb = skb_copy(skb, gfp);
3035 if (!ack_skb)
3036 return -ENOMEM;
3037
3038 spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3039 id = idr_alloc(&local->ack_status_frames, ack_skb,
3040 1, 0x10000, GFP_ATOMIC);
3041 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3042
3043 if (id < 0) {
3044 kfree_skb(ack_skb);
3045 return -ENOMEM;
3046 }
3047
3048 IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3049
3050 *cookie = ieee80211_mgmt_tx_cookie(local);
3051 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3052
3053 return 0;
3054 }
3055
3056 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3057 struct wireless_dev *wdev,
3058 u16 frame_type, bool reg)
3059 {
3060 struct ieee80211_local *local = wiphy_priv(wiphy);
3061 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3062
3063 switch (frame_type) {
3064 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3065 if (reg) {
3066 local->probe_req_reg++;
3067 sdata->vif.probe_req_reg++;
3068 } else {
3069 if (local->probe_req_reg)
3070 local->probe_req_reg--;
3071
3072 if (sdata->vif.probe_req_reg)
3073 sdata->vif.probe_req_reg--;
3074 }
3075
3076 if (!local->open_count)
3077 break;
3078
3079 if (sdata->vif.probe_req_reg == 1)
3080 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3081 FIF_PROBE_REQ);
3082 else if (sdata->vif.probe_req_reg == 0)
3083 drv_config_iface_filter(local, sdata, 0,
3084 FIF_PROBE_REQ);
3085
3086 ieee80211_configure_filter(local);
3087 break;
3088 default:
3089 break;
3090 }
3091 }
3092
3093 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3094 {
3095 struct ieee80211_local *local = wiphy_priv(wiphy);
3096
3097 if (local->started)
3098 return -EOPNOTSUPP;
3099
3100 return drv_set_antenna(local, tx_ant, rx_ant);
3101 }
3102
3103 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3104 {
3105 struct ieee80211_local *local = wiphy_priv(wiphy);
3106
3107 return drv_get_antenna(local, tx_ant, rx_ant);
3108 }
3109
3110 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3111 struct net_device *dev,
3112 struct cfg80211_gtk_rekey_data *data)
3113 {
3114 struct ieee80211_local *local = wiphy_priv(wiphy);
3115 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3116
3117 if (!local->ops->set_rekey_data)
3118 return -EOPNOTSUPP;
3119
3120 drv_set_rekey_data(local, sdata, data);
3121
3122 return 0;
3123 }
3124
3125 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3126 const u8 *peer, u64 *cookie)
3127 {
3128 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3129 struct ieee80211_local *local = sdata->local;
3130 struct ieee80211_qos_hdr *nullfunc;
3131 struct sk_buff *skb;
3132 int size = sizeof(*nullfunc);
3133 __le16 fc;
3134 bool qos;
3135 struct ieee80211_tx_info *info;
3136 struct sta_info *sta;
3137 struct ieee80211_chanctx_conf *chanctx_conf;
3138 enum nl80211_band band;
3139 int ret;
3140
3141 /* the lock is needed to assign the cookie later */
3142 mutex_lock(&local->mtx);
3143
3144 rcu_read_lock();
3145 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3146 if (WARN_ON(!chanctx_conf)) {
3147 ret = -EINVAL;
3148 goto unlock;
3149 }
3150 band = chanctx_conf->def.chan->band;
3151 sta = sta_info_get_bss(sdata, peer);
3152 if (sta) {
3153 qos = sta->sta.wme;
3154 } else {
3155 ret = -ENOLINK;
3156 goto unlock;
3157 }
3158
3159 if (qos) {
3160 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3161 IEEE80211_STYPE_QOS_NULLFUNC |
3162 IEEE80211_FCTL_FROMDS);
3163 } else {
3164 size -= 2;
3165 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3166 IEEE80211_STYPE_NULLFUNC |
3167 IEEE80211_FCTL_FROMDS);
3168 }
3169
3170 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3171 if (!skb) {
3172 ret = -ENOMEM;
3173 goto unlock;
3174 }
3175
3176 skb->dev = dev;
3177
3178 skb_reserve(skb, local->hw.extra_tx_headroom);
3179
3180 nullfunc = (void *) skb_put(skb, size);
3181 nullfunc->frame_control = fc;
3182 nullfunc->duration_id = 0;
3183 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3184 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3185 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3186 nullfunc->seq_ctrl = 0;
3187
3188 info = IEEE80211_SKB_CB(skb);
3189
3190 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3191 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3192 info->band = band;
3193
3194 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3195 skb->priority = 7;
3196 if (qos)
3197 nullfunc->qos_ctrl = cpu_to_le16(7);
3198
3199 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3200 if (ret) {
3201 kfree_skb(skb);
3202 goto unlock;
3203 }
3204
3205 local_bh_disable();
3206 ieee80211_xmit(sdata, sta, skb);
3207 local_bh_enable();
3208
3209 ret = 0;
3210 unlock:
3211 rcu_read_unlock();
3212 mutex_unlock(&local->mtx);
3213
3214 return ret;
3215 }
3216
3217 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3218 struct wireless_dev *wdev,
3219 struct cfg80211_chan_def *chandef)
3220 {
3221 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3222 struct ieee80211_local *local = wiphy_priv(wiphy);
3223 struct ieee80211_chanctx_conf *chanctx_conf;
3224 int ret = -ENODATA;
3225
3226 rcu_read_lock();
3227 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3228 if (chanctx_conf) {
3229 *chandef = sdata->vif.bss_conf.chandef;
3230 ret = 0;
3231 } else if (local->open_count > 0 &&
3232 local->open_count == local->monitors &&
3233 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3234 if (local->use_chanctx)
3235 *chandef = local->monitor_chandef;
3236 else
3237 *chandef = local->_oper_chandef;
3238 ret = 0;
3239 }
3240 rcu_read_unlock();
3241
3242 return ret;
3243 }
3244
3245 #ifdef CONFIG_PM
3246 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3247 {
3248 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3249 }
3250 #endif
3251
3252 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3253 struct net_device *dev,
3254 struct cfg80211_qos_map *qos_map)
3255 {
3256 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3257 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3258
3259 if (qos_map) {
3260 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3261 if (!new_qos_map)
3262 return -ENOMEM;
3263 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3264 } else {
3265 /* A NULL qos_map was passed to disable QoS mapping */
3266 new_qos_map = NULL;
3267 }
3268
3269 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3270 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3271 if (old_qos_map)
3272 kfree_rcu(old_qos_map, rcu_head);
3273
3274 return 0;
3275 }
3276
3277 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3278 struct net_device *dev,
3279 struct cfg80211_chan_def *chandef)
3280 {
3281 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3282 int ret;
3283 u32 changed = 0;
3284
3285 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3286 if (ret == 0)
3287 ieee80211_bss_info_change_notify(sdata, changed);
3288
3289 return ret;
3290 }
3291
3292 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3293 u8 tsid, const u8 *peer, u8 up,
3294 u16 admitted_time)
3295 {
3296 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3297 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3298 int ac = ieee802_1d_to_ac[up];
3299
3300 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3301 return -EOPNOTSUPP;
3302
3303 if (!(sdata->wmm_acm & BIT(up)))
3304 return -EINVAL;
3305
3306 if (ifmgd->tx_tspec[ac].admitted_time)
3307 return -EBUSY;
3308
3309 if (admitted_time) {
3310 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3311 ifmgd->tx_tspec[ac].tsid = tsid;
3312 ifmgd->tx_tspec[ac].up = up;
3313 }
3314
3315 return 0;
3316 }
3317
3318 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3319 u8 tsid, const u8 *peer)
3320 {
3321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3322 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3323 struct ieee80211_local *local = wiphy_priv(wiphy);
3324 int ac;
3325
3326 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3327 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3328
3329 /* skip unused entries */
3330 if (!tx_tspec->admitted_time)
3331 continue;
3332
3333 if (tx_tspec->tsid != tsid)
3334 continue;
3335
3336 /* due to this new packets will be reassigned to non-ACM ACs */
3337 tx_tspec->up = -1;
3338
3339 /* Make sure that all packets have been sent to avoid to
3340 * restore the QoS params on packets that are still on the
3341 * queues.
3342 */
3343 synchronize_net();
3344 ieee80211_flush_queues(local, sdata, false);
3345
3346 /* restore the normal QoS parameters
3347 * (unconditionally to avoid races)
3348 */
3349 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3350 tx_tspec->downgraded = false;
3351 ieee80211_sta_handle_tspec_ac_params(sdata);
3352
3353 /* finally clear all the data */
3354 memset(tx_tspec, 0, sizeof(*tx_tspec));
3355
3356 return 0;
3357 }
3358
3359 return -ENOENT;
3360 }
3361
3362 const struct cfg80211_ops mac80211_config_ops = {
3363 .add_virtual_intf = ieee80211_add_iface,
3364 .del_virtual_intf = ieee80211_del_iface,
3365 .change_virtual_intf = ieee80211_change_iface,
3366 .start_p2p_device = ieee80211_start_p2p_device,
3367 .stop_p2p_device = ieee80211_stop_p2p_device,
3368 .add_key = ieee80211_add_key,
3369 .del_key = ieee80211_del_key,
3370 .get_key = ieee80211_get_key,
3371 .set_default_key = ieee80211_config_default_key,
3372 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3373 .start_ap = ieee80211_start_ap,
3374 .change_beacon = ieee80211_change_beacon,
3375 .stop_ap = ieee80211_stop_ap,
3376 .add_station = ieee80211_add_station,
3377 .del_station = ieee80211_del_station,
3378 .change_station = ieee80211_change_station,
3379 .get_station = ieee80211_get_station,
3380 .dump_station = ieee80211_dump_station,
3381 .dump_survey = ieee80211_dump_survey,
3382 #ifdef CONFIG_MAC80211_MESH
3383 .add_mpath = ieee80211_add_mpath,
3384 .del_mpath = ieee80211_del_mpath,
3385 .change_mpath = ieee80211_change_mpath,
3386 .get_mpath = ieee80211_get_mpath,
3387 .dump_mpath = ieee80211_dump_mpath,
3388 .get_mpp = ieee80211_get_mpp,
3389 .dump_mpp = ieee80211_dump_mpp,
3390 .update_mesh_config = ieee80211_update_mesh_config,
3391 .get_mesh_config = ieee80211_get_mesh_config,
3392 .join_mesh = ieee80211_join_mesh,
3393 .leave_mesh = ieee80211_leave_mesh,
3394 #endif
3395 .join_ocb = ieee80211_join_ocb,
3396 .leave_ocb = ieee80211_leave_ocb,
3397 .change_bss = ieee80211_change_bss,
3398 .set_txq_params = ieee80211_set_txq_params,
3399 .set_monitor_channel = ieee80211_set_monitor_channel,
3400 .suspend = ieee80211_suspend,
3401 .resume = ieee80211_resume,
3402 .scan = ieee80211_scan,
3403 .abort_scan = ieee80211_abort_scan,
3404 .sched_scan_start = ieee80211_sched_scan_start,
3405 .sched_scan_stop = ieee80211_sched_scan_stop,
3406 .auth = ieee80211_auth,
3407 .assoc = ieee80211_assoc,
3408 .deauth = ieee80211_deauth,
3409 .disassoc = ieee80211_disassoc,
3410 .join_ibss = ieee80211_join_ibss,
3411 .leave_ibss = ieee80211_leave_ibss,
3412 .set_mcast_rate = ieee80211_set_mcast_rate,
3413 .set_wiphy_params = ieee80211_set_wiphy_params,
3414 .set_tx_power = ieee80211_set_tx_power,
3415 .get_tx_power = ieee80211_get_tx_power,
3416 .set_wds_peer = ieee80211_set_wds_peer,
3417 .rfkill_poll = ieee80211_rfkill_poll,
3418 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3419 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3420 .set_power_mgmt = ieee80211_set_power_mgmt,
3421 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3422 .remain_on_channel = ieee80211_remain_on_channel,
3423 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3424 .mgmt_tx = ieee80211_mgmt_tx,
3425 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3426 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3427 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3428 .set_antenna = ieee80211_set_antenna,
3429 .get_antenna = ieee80211_get_antenna,
3430 .set_rekey_data = ieee80211_set_rekey_data,
3431 .tdls_oper = ieee80211_tdls_oper,
3432 .tdls_mgmt = ieee80211_tdls_mgmt,
3433 .tdls_channel_switch = ieee80211_tdls_channel_switch,
3434 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3435 .probe_client = ieee80211_probe_client,
3436 .set_noack_map = ieee80211_set_noack_map,
3437 #ifdef CONFIG_PM
3438 .set_wakeup = ieee80211_set_wakeup,
3439 #endif
3440 .get_channel = ieee80211_cfg_get_channel,
3441 .start_radar_detection = ieee80211_start_radar_detection,
3442 .channel_switch = ieee80211_channel_switch,
3443 .set_qos_map = ieee80211_set_qos_map,
3444 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3445 .add_tx_ts = ieee80211_add_tx_ts,
3446 .del_tx_ts = ieee80211_del_tx_ts,
3447 };
Linux kernel - Deliverables
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