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mac80211: export the expected throughput
[linux-2.6/btrfs-unstable.git] / net / mac80211 / cfg.c
blobd7513a503be11b180031342dcf316450fd6c69d3
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 u32 mask = MONITOR_FLAG_COOK_FRAMES |
77 MONITOR_FLAG_ACTIVE;
78
79 /*
80 * Prohibit MONITOR_FLAG_COOK_FRAMES and
81 * MONITOR_FLAG_ACTIVE to be changed while the
82 * interface is up.
83 * Else we would need to add a lot of cruft
84 * to update everything:
85 * cooked_mntrs, monitor and all fif_* counters
86 * reconfigure hardware
87 */
88 if ((*flags & mask) != (sdata->u.mntr_flags & mask))
89 return -EBUSY;
90
91 ieee80211_adjust_monitor_flags(sdata, -1);
92 sdata->u.mntr_flags = *flags;
93 ieee80211_adjust_monitor_flags(sdata, 1);
94
95 ieee80211_configure_filter(local);
96 } else {
97 /*
98 * Because the interface is down, ieee80211_do_stop
99 * and ieee80211_do_open take care of "everything"
100 * mentioned in the comment above.
101 */
102 sdata->u.mntr_flags = *flags;
103 }
104 }
105
106 return 0;
107 }
108
109 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
110 struct wireless_dev *wdev)
111 {
112 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
113 int ret;
114
115 mutex_lock(&sdata->local->chanctx_mtx);
116 ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
117 mutex_unlock(&sdata->local->chanctx_mtx);
118 if (ret < 0)
119 return ret;
120
121 return ieee80211_do_open(wdev, true);
122 }
123
124 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
125 struct wireless_dev *wdev)
126 {
127 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
128 }
129
130 static int ieee80211_set_noack_map(struct wiphy *wiphy,
131 struct net_device *dev,
132 u16 noack_map)
133 {
134 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
135
136 sdata->noack_map = noack_map;
137 return 0;
138 }
139
140 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
141 u8 key_idx, bool pairwise, const u8 *mac_addr,
142 struct key_params *params)
143 {
144 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
145 struct ieee80211_local *local = sdata->local;
146 struct sta_info *sta = NULL;
147 const struct ieee80211_cipher_scheme *cs = NULL;
148 struct ieee80211_key *key;
149 int err;
150
151 if (!ieee80211_sdata_running(sdata))
152 return -ENETDOWN;
153
154 /* reject WEP and TKIP keys if WEP failed to initialize */
155 switch (params->cipher) {
156 case WLAN_CIPHER_SUITE_WEP40:
157 case WLAN_CIPHER_SUITE_TKIP:
158 case WLAN_CIPHER_SUITE_WEP104:
159 if (IS_ERR(local->wep_tx_tfm))
160 return -EINVAL;
161 break;
162 case WLAN_CIPHER_SUITE_CCMP:
163 case WLAN_CIPHER_SUITE_AES_CMAC:
164 case WLAN_CIPHER_SUITE_GCMP:
165 break;
166 default:
167 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
168 break;
169 }
170
171 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
172 params->key, params->seq_len, params->seq,
173 cs);
174 if (IS_ERR(key))
175 return PTR_ERR(key);
176
177 if (pairwise)
178 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
179
180 mutex_lock(&local->sta_mtx);
181
182 if (mac_addr) {
183 if (ieee80211_vif_is_mesh(&sdata->vif))
184 sta = sta_info_get(sdata, mac_addr);
185 else
186 sta = sta_info_get_bss(sdata, mac_addr);
187 /*
188 * The ASSOC test makes sure the driver is ready to
189 * receive the key. When wpa_supplicant has roamed
190 * using FT, it attempts to set the key before
191 * association has completed, this rejects that attempt
192 * so it will set the key again after assocation.
193 *
194 * TODO: accept the key if we have a station entry and
195 * add it to the device after the station.
196 */
197 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
198 ieee80211_key_free_unused(key);
199 err = -ENOENT;
200 goto out_unlock;
201 }
202 }
203
204 switch (sdata->vif.type) {
205 case NL80211_IFTYPE_STATION:
206 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
207 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
208 break;
209 case NL80211_IFTYPE_AP:
210 case NL80211_IFTYPE_AP_VLAN:
211 /* Keys without a station are used for TX only */
212 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
213 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
214 break;
215 case NL80211_IFTYPE_ADHOC:
216 /* no MFP (yet) */
217 break;
218 case NL80211_IFTYPE_MESH_POINT:
219 #ifdef CONFIG_MAC80211_MESH
220 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
221 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
222 break;
223 #endif
224 case NL80211_IFTYPE_WDS:
225 case NL80211_IFTYPE_MONITOR:
226 case NL80211_IFTYPE_P2P_DEVICE:
227 case NL80211_IFTYPE_UNSPECIFIED:
228 case NUM_NL80211_IFTYPES:
229 case NL80211_IFTYPE_P2P_CLIENT:
230 case NL80211_IFTYPE_P2P_GO:
231 /* shouldn't happen */
232 WARN_ON_ONCE(1);
233 break;
234 }
235
236 if (sta)
237 sta->cipher_scheme = cs;
238
239 err = ieee80211_key_link(key, sdata, sta);
240
241 out_unlock:
242 mutex_unlock(&local->sta_mtx);
243
244 return err;
245 }
246
247 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
248 u8 key_idx, bool pairwise, const u8 *mac_addr)
249 {
250 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
251 struct ieee80211_local *local = sdata->local;
252 struct sta_info *sta;
253 struct ieee80211_key *key = NULL;
254 int ret;
255
256 mutex_lock(&local->sta_mtx);
257 mutex_lock(&local->key_mtx);
258
259 if (mac_addr) {
260 ret = -ENOENT;
261
262 sta = sta_info_get_bss(sdata, mac_addr);
263 if (!sta)
264 goto out_unlock;
265
266 if (pairwise)
267 key = key_mtx_dereference(local, sta->ptk[key_idx]);
268 else
269 key = key_mtx_dereference(local, sta->gtk[key_idx]);
270 } else
271 key = key_mtx_dereference(local, sdata->keys[key_idx]);
272
273 if (!key) {
274 ret = -ENOENT;
275 goto out_unlock;
276 }
277
278 ieee80211_key_free(key, true);
279
280 ret = 0;
281 out_unlock:
282 mutex_unlock(&local->key_mtx);
283 mutex_unlock(&local->sta_mtx);
284
285 return ret;
286 }
287
288 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
289 u8 key_idx, bool pairwise, const u8 *mac_addr,
290 void *cookie,
291 void (*callback)(void *cookie,
292 struct key_params *params))
293 {
294 struct ieee80211_sub_if_data *sdata;
295 struct sta_info *sta = NULL;
296 u8 seq[6] = {0};
297 struct key_params params;
298 struct ieee80211_key *key = NULL;
299 u64 pn64;
300 u32 iv32;
301 u16 iv16;
302 int err = -ENOENT;
303
304 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
305
306 rcu_read_lock();
307
308 if (mac_addr) {
309 sta = sta_info_get_bss(sdata, mac_addr);
310 if (!sta)
311 goto out;
312
313 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
314 key = rcu_dereference(sta->ptk[key_idx]);
315 else if (!pairwise &&
316 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
317 key = rcu_dereference(sta->gtk[key_idx]);
318 } else
319 key = rcu_dereference(sdata->keys[key_idx]);
320
321 if (!key)
322 goto out;
323
324 memset(&params, 0, sizeof(params));
325
326 params.cipher = key->conf.cipher;
327
328 switch (key->conf.cipher) {
329 case WLAN_CIPHER_SUITE_TKIP:
330 iv32 = key->u.tkip.tx.iv32;
331 iv16 = key->u.tkip.tx.iv16;
332
333 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
334 drv_get_tkip_seq(sdata->local,
335 key->conf.hw_key_idx,
336 &iv32, &iv16);
337
338 seq[0] = iv16 & 0xff;
339 seq[1] = (iv16 >> 8) & 0xff;
340 seq[2] = iv32 & 0xff;
341 seq[3] = (iv32 >> 8) & 0xff;
342 seq[4] = (iv32 >> 16) & 0xff;
343 seq[5] = (iv32 >> 24) & 0xff;
344 params.seq = seq;
345 params.seq_len = 6;
346 break;
347 case WLAN_CIPHER_SUITE_CCMP:
348 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
349 seq[0] = pn64;
350 seq[1] = pn64 >> 8;
351 seq[2] = pn64 >> 16;
352 seq[3] = pn64 >> 24;
353 seq[4] = pn64 >> 32;
354 seq[5] = pn64 >> 40;
355 params.seq = seq;
356 params.seq_len = 6;
357 break;
358 case WLAN_CIPHER_SUITE_AES_CMAC:
359 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
360 seq[0] = pn64;
361 seq[1] = pn64 >> 8;
362 seq[2] = pn64 >> 16;
363 seq[3] = pn64 >> 24;
364 seq[4] = pn64 >> 32;
365 seq[5] = pn64 >> 40;
366 params.seq = seq;
367 params.seq_len = 6;
368 break;
369 }
370
371 params.key = key->conf.key;
372 params.key_len = key->conf.keylen;
373
374 callback(cookie, &params);
375 err = 0;
376
377 out:
378 rcu_read_unlock();
379 return err;
380 }
381
382 static int ieee80211_config_default_key(struct wiphy *wiphy,
383 struct net_device *dev,
384 u8 key_idx, bool uni,
385 bool multi)
386 {
387 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
388
389 ieee80211_set_default_key(sdata, key_idx, uni, multi);
390
391 return 0;
392 }
393
394 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
395 struct net_device *dev,
396 u8 key_idx)
397 {
398 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
399
400 ieee80211_set_default_mgmt_key(sdata, key_idx);
401
402 return 0;
403 }
404
405 void sta_set_rate_info_tx(struct sta_info *sta,
406 const struct ieee80211_tx_rate *rate,
407 struct rate_info *rinfo)
408 {
409 rinfo->flags = 0;
410 if (rate->flags & IEEE80211_TX_RC_MCS) {
411 rinfo->flags |= RATE_INFO_FLAGS_MCS;
412 rinfo->mcs = rate->idx;
413 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
414 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
415 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
416 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
417 } else {
418 struct ieee80211_supported_band *sband;
419 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
420 u16 brate;
421
422 sband = sta->local->hw.wiphy->bands[
423 ieee80211_get_sdata_band(sta->sdata)];
424 brate = sband->bitrates[rate->idx].bitrate;
425 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
426 }
427 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
428 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
429 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
430 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
431 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
432 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
433 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
435 }
436
437 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
438 {
439 rinfo->flags = 0;
440
441 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
442 rinfo->flags |= RATE_INFO_FLAGS_MCS;
443 rinfo->mcs = sta->last_rx_rate_idx;
444 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
445 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
446 rinfo->nss = sta->last_rx_rate_vht_nss;
447 rinfo->mcs = sta->last_rx_rate_idx;
448 } else {
449 struct ieee80211_supported_band *sband;
450 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
451 u16 brate;
452
453 sband = sta->local->hw.wiphy->bands[
454 ieee80211_get_sdata_band(sta->sdata)];
455 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
456 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
457 }
458
459 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
460 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
461 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
462 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
463 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
464 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
465 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
466 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
467 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
468 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
469 }
470
471 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
472 {
473 struct ieee80211_sub_if_data *sdata = sta->sdata;
474 struct ieee80211_local *local = sdata->local;
475 struct rate_control_ref *ref = local->rate_ctrl;
476 struct timespec uptime;
477 u64 packets = 0;
478 u32 thr = 0;
479 int i, ac;
480
481 sinfo->generation = sdata->local->sta_generation;
482
483 sinfo->filled = STATION_INFO_INACTIVE_TIME |
484 STATION_INFO_RX_BYTES64 |
485 STATION_INFO_TX_BYTES64 |
486 STATION_INFO_RX_PACKETS |
487 STATION_INFO_TX_PACKETS |
488 STATION_INFO_TX_RETRIES |
489 STATION_INFO_TX_FAILED |
490 STATION_INFO_TX_BITRATE |
491 STATION_INFO_RX_BITRATE |
492 STATION_INFO_RX_DROP_MISC |
493 STATION_INFO_BSS_PARAM |
494 STATION_INFO_CONNECTED_TIME |
495 STATION_INFO_STA_FLAGS |
496 STATION_INFO_BEACON_LOSS_COUNT;
497
498 do_posix_clock_monotonic_gettime(&uptime);
499 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
500
501 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
502 sinfo->tx_bytes = 0;
503 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
504 sinfo->tx_bytes += sta->tx_bytes[ac];
505 packets += sta->tx_packets[ac];
506 }
507 sinfo->tx_packets = packets;
508 sinfo->rx_bytes = sta->rx_bytes;
509 sinfo->rx_packets = sta->rx_packets;
510 sinfo->tx_retries = sta->tx_retry_count;
511 sinfo->tx_failed = sta->tx_retry_failed;
512 sinfo->rx_dropped_misc = sta->rx_dropped;
513 sinfo->beacon_loss_count = sta->beacon_loss_count;
514
515 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
516 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
517 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
518 if (!local->ops->get_rssi ||
519 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
520 sinfo->signal = (s8)sta->last_signal;
521 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
522 }
523 if (sta->chains) {
524 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
525 STATION_INFO_CHAIN_SIGNAL_AVG;
526
527 sinfo->chains = sta->chains;
528 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
529 sinfo->chain_signal[i] = sta->chain_signal_last[i];
530 sinfo->chain_signal_avg[i] =
531 (s8) -ewma_read(&sta->chain_signal_avg[i]);
532 }
533 }
534
535 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
536 sta_set_rate_info_rx(sta, &sinfo->rxrate);
537
538 if (ieee80211_vif_is_mesh(&sdata->vif)) {
539 #ifdef CONFIG_MAC80211_MESH
540 sinfo->filled |= STATION_INFO_LLID |
541 STATION_INFO_PLID |
542 STATION_INFO_PLINK_STATE |
543 STATION_INFO_LOCAL_PM |
544 STATION_INFO_PEER_PM |
545 STATION_INFO_NONPEER_PM;
546
547 sinfo->llid = sta->llid;
548 sinfo->plid = sta->plid;
549 sinfo->plink_state = sta->plink_state;
550 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
551 sinfo->filled |= STATION_INFO_T_OFFSET;
552 sinfo->t_offset = sta->t_offset;
553 }
554 sinfo->local_pm = sta->local_pm;
555 sinfo->peer_pm = sta->peer_pm;
556 sinfo->nonpeer_pm = sta->nonpeer_pm;
557 #endif
558 }
559
560 sinfo->bss_param.flags = 0;
561 if (sdata->vif.bss_conf.use_cts_prot)
562 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
563 if (sdata->vif.bss_conf.use_short_preamble)
564 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
565 if (sdata->vif.bss_conf.use_short_slot)
566 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
567 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
568 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
569
570 sinfo->sta_flags.set = 0;
571 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
572 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
573 BIT(NL80211_STA_FLAG_WME) |
574 BIT(NL80211_STA_FLAG_MFP) |
575 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
576 BIT(NL80211_STA_FLAG_ASSOCIATED) |
577 BIT(NL80211_STA_FLAG_TDLS_PEER);
578 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
579 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
580 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
581 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
582 if (test_sta_flag(sta, WLAN_STA_WME))
583 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
584 if (test_sta_flag(sta, WLAN_STA_MFP))
585 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
586 if (test_sta_flag(sta, WLAN_STA_AUTH))
587 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
588 if (test_sta_flag(sta, WLAN_STA_ASSOC))
589 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
590 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
591 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
592
593 /* check if the driver has a SW RC implementation */
594 if (ref && ref->ops->get_expected_throughput)
595 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
596 else
597 thr = drv_get_expected_throughput(local, &sta->sta);
598
599 if (thr != 0) {
600 sinfo->filled |= STATION_INFO_EXPECTED_THROUGHPUT;
601 sinfo->expected_throughput = thr;
602 }
603 }
604
605 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
606 "rx_packets", "rx_bytes", "wep_weak_iv_count",
607 "rx_duplicates", "rx_fragments", "rx_dropped",
608 "tx_packets", "tx_bytes", "tx_fragments",
609 "tx_filtered", "tx_retry_failed", "tx_retries",
610 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
611 "channel", "noise", "ch_time", "ch_time_busy",
612 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
613 };
614 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
615
616 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
617 struct net_device *dev,
618 int sset)
619 {
620 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
621 int rv = 0;
622
623 if (sset == ETH_SS_STATS)
624 rv += STA_STATS_LEN;
625
626 rv += drv_get_et_sset_count(sdata, sset);
627
628 if (rv == 0)
629 return -EOPNOTSUPP;
630 return rv;
631 }
632
633 static void ieee80211_get_et_stats(struct wiphy *wiphy,
634 struct net_device *dev,
635 struct ethtool_stats *stats,
636 u64 *data)
637 {
638 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
639 struct ieee80211_chanctx_conf *chanctx_conf;
640 struct ieee80211_channel *channel;
641 struct sta_info *sta;
642 struct ieee80211_local *local = sdata->local;
643 struct station_info sinfo;
644 struct survey_info survey;
645 int i, q;
646 #define STA_STATS_SURVEY_LEN 7
647
648 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
649
650 #define ADD_STA_STATS(sta) \
651 do { \
652 data[i++] += sta->rx_packets; \
653 data[i++] += sta->rx_bytes; \
654 data[i++] += sta->wep_weak_iv_count; \
655 data[i++] += sta->num_duplicates; \
656 data[i++] += sta->rx_fragments; \
657 data[i++] += sta->rx_dropped; \
658 \
659 data[i++] += sinfo.tx_packets; \
660 data[i++] += sinfo.tx_bytes; \
661 data[i++] += sta->tx_fragments; \
662 data[i++] += sta->tx_filtered_count; \
663 data[i++] += sta->tx_retry_failed; \
664 data[i++] += sta->tx_retry_count; \
665 data[i++] += sta->beacon_loss_count; \
666 } while (0)
667
668 /* For Managed stations, find the single station based on BSSID
669 * and use that. For interface types, iterate through all available
670 * stations and add stats for any station that is assigned to this
671 * network device.
672 */
673
674 mutex_lock(&local->sta_mtx);
675
676 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
677 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
678
679 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
680 goto do_survey;
681
682 sinfo.filled = 0;
683 sta_set_sinfo(sta, &sinfo);
684
685 i = 0;
686 ADD_STA_STATS(sta);
687
688 data[i++] = sta->sta_state;
689
690
691 if (sinfo.filled & STATION_INFO_TX_BITRATE)
692 data[i] = 100000 *
693 cfg80211_calculate_bitrate(&sinfo.txrate);
694 i++;
695 if (sinfo.filled & STATION_INFO_RX_BITRATE)
696 data[i] = 100000 *
697 cfg80211_calculate_bitrate(&sinfo.rxrate);
698 i++;
699
700 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
701 data[i] = (u8)sinfo.signal_avg;
702 i++;
703 } else {
704 list_for_each_entry(sta, &local->sta_list, list) {
705 /* Make sure this station belongs to the proper dev */
706 if (sta->sdata->dev != dev)
707 continue;
708
709 sinfo.filled = 0;
710 sta_set_sinfo(sta, &sinfo);
711 i = 0;
712 ADD_STA_STATS(sta);
713 }
714 }
715
716 do_survey:
717 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
718 /* Get survey stats for current channel */
719 survey.filled = 0;
720
721 rcu_read_lock();
722 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
723 if (chanctx_conf)
724 channel = chanctx_conf->def.chan;
725 else
726 channel = NULL;
727 rcu_read_unlock();
728
729 if (channel) {
730 q = 0;
731 do {
732 survey.filled = 0;
733 if (drv_get_survey(local, q, &survey) != 0) {
734 survey.filled = 0;
735 break;
736 }
737 q++;
738 } while (channel != survey.channel);
739 }
740
741 if (survey.filled)
742 data[i++] = survey.channel->center_freq;
743 else
744 data[i++] = 0;
745 if (survey.filled & SURVEY_INFO_NOISE_DBM)
746 data[i++] = (u8)survey.noise;
747 else
748 data[i++] = -1LL;
749 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
750 data[i++] = survey.channel_time;
751 else
752 data[i++] = -1LL;
753 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
754 data[i++] = survey.channel_time_busy;
755 else
756 data[i++] = -1LL;
757 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
758 data[i++] = survey.channel_time_ext_busy;
759 else
760 data[i++] = -1LL;
761 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
762 data[i++] = survey.channel_time_rx;
763 else
764 data[i++] = -1LL;
765 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
766 data[i++] = survey.channel_time_tx;
767 else
768 data[i++] = -1LL;
769
770 mutex_unlock(&local->sta_mtx);
771
772 if (WARN_ON(i != STA_STATS_LEN))
773 return;
774
775 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
776 }
777
778 static void ieee80211_get_et_strings(struct wiphy *wiphy,
779 struct net_device *dev,
780 u32 sset, u8 *data)
781 {
782 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
783 int sz_sta_stats = 0;
784
785 if (sset == ETH_SS_STATS) {
786 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
787 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
788 }
789 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
790 }
791
792 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
793 int idx, u8 *mac, struct station_info *sinfo)
794 {
795 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
796 struct ieee80211_local *local = sdata->local;
797 struct sta_info *sta;
798 int ret = -ENOENT;
799
800 mutex_lock(&local->sta_mtx);
801
802 sta = sta_info_get_by_idx(sdata, idx);
803 if (sta) {
804 ret = 0;
805 memcpy(mac, sta->sta.addr, ETH_ALEN);
806 sta_set_sinfo(sta, sinfo);
807 }
808
809 mutex_unlock(&local->sta_mtx);
810
811 return ret;
812 }
813
814 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
815 int idx, struct survey_info *survey)
816 {
817 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
818
819 return drv_get_survey(local, idx, survey);
820 }
821
822 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
823 const u8 *mac, struct station_info *sinfo)
824 {
825 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
826 struct ieee80211_local *local = sdata->local;
827 struct sta_info *sta;
828 int ret = -ENOENT;
829
830 mutex_lock(&local->sta_mtx);
831
832 sta = sta_info_get_bss(sdata, mac);
833 if (sta) {
834 ret = 0;
835 sta_set_sinfo(sta, sinfo);
836 }
837
838 mutex_unlock(&local->sta_mtx);
839
840 return ret;
841 }
842
843 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
844 struct cfg80211_chan_def *chandef)
845 {
846 struct ieee80211_local *local = wiphy_priv(wiphy);
847 struct ieee80211_sub_if_data *sdata;
848 int ret = 0;
849
850 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
851 return 0;
852
853 mutex_lock(&local->mtx);
854 mutex_lock(&local->iflist_mtx);
855 if (local->use_chanctx) {
856 sdata = rcu_dereference_protected(
857 local->monitor_sdata,
858 lockdep_is_held(&local->iflist_mtx));
859 if (sdata) {
860 ieee80211_vif_release_channel(sdata);
861 ret = ieee80211_vif_use_channel(sdata, chandef,
862 IEEE80211_CHANCTX_EXCLUSIVE);
863 }
864 } else if (local->open_count == local->monitors) {
865 local->_oper_chandef = *chandef;
866 ieee80211_hw_config(local, 0);
867 }
868
869 if (ret == 0)
870 local->monitor_chandef = *chandef;
871 mutex_unlock(&local->iflist_mtx);
872 mutex_unlock(&local->mtx);
873
874 return ret;
875 }
876
877 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
878 const u8 *resp, size_t resp_len)
879 {
880 struct probe_resp *new, *old;
881
882 if (!resp || !resp_len)
883 return 1;
884
885 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
886
887 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
888 if (!new)
889 return -ENOMEM;
890
891 new->len = resp_len;
892 memcpy(new->data, resp, resp_len);
893
894 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
895 if (old)
896 kfree_rcu(old, rcu_head);
897
898 return 0;
899 }
900
901 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
902 struct cfg80211_beacon_data *params)
903 {
904 struct beacon_data *new, *old;
905 int new_head_len, new_tail_len;
906 int size, err;
907 u32 changed = BSS_CHANGED_BEACON;
908
909 old = sdata_dereference(sdata->u.ap.beacon, sdata);
910
911
912 /* Need to have a beacon head if we don't have one yet */
913 if (!params->head && !old)
914 return -EINVAL;
915
916 /* new or old head? */
917 if (params->head)
918 new_head_len = params->head_len;
919 else
920 new_head_len = old->head_len;
921
922 /* new or old tail? */
923 if (params->tail || !old)
924 /* params->tail_len will be zero for !params->tail */
925 new_tail_len = params->tail_len;
926 else
927 new_tail_len = old->tail_len;
928
929 size = sizeof(*new) + new_head_len + new_tail_len;
930
931 new = kzalloc(size, GFP_KERNEL);
932 if (!new)
933 return -ENOMEM;
934
935 /* start filling the new info now */
936
937 /*
938 * pointers go into the block we allocated,
939 * memory is | beacon_data | head | tail |
940 */
941 new->head = ((u8 *) new) + sizeof(*new);
942 new->tail = new->head + new_head_len;
943 new->head_len = new_head_len;
944 new->tail_len = new_tail_len;
945
946 /* copy in head */
947 if (params->head)
948 memcpy(new->head, params->head, new_head_len);
949 else
950 memcpy(new->head, old->head, new_head_len);
951
952 /* copy in optional tail */
953 if (params->tail)
954 memcpy(new->tail, params->tail, new_tail_len);
955 else
956 if (old)
957 memcpy(new->tail, old->tail, new_tail_len);
958
959 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
960 params->probe_resp_len);
961 if (err < 0)
962 return err;
963 if (err == 0)
964 changed |= BSS_CHANGED_AP_PROBE_RESP;
965
966 rcu_assign_pointer(sdata->u.ap.beacon, new);
967
968 if (old)
969 kfree_rcu(old, rcu_head);
970
971 return changed;
972 }
973
974 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
975 struct cfg80211_ap_settings *params)
976 {
977 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
978 struct ieee80211_local *local = sdata->local;
979 struct beacon_data *old;
980 struct ieee80211_sub_if_data *vlan;
981 u32 changed = BSS_CHANGED_BEACON_INT |
982 BSS_CHANGED_BEACON_ENABLED |
983 BSS_CHANGED_BEACON |
984 BSS_CHANGED_SSID |
985 BSS_CHANGED_P2P_PS;
986 int err;
987
988 old = sdata_dereference(sdata->u.ap.beacon, sdata);
989 if (old)
990 return -EALREADY;
991
992 /* TODO: make hostapd tell us what it wants */
993 sdata->smps_mode = IEEE80211_SMPS_OFF;
994 sdata->needed_rx_chains = sdata->local->rx_chains;
995
996 mutex_lock(&local->mtx);
997 err = ieee80211_vif_use_channel(sdata, &params->chandef,
998 IEEE80211_CHANCTX_SHARED);
999 if (!err)
1000 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
1001 mutex_unlock(&local->mtx);
1002 if (err)
1003 return err;
1004
1005 /*
1006 * Apply control port protocol, this allows us to
1007 * not encrypt dynamic WEP control frames.
1008 */
1009 sdata->control_port_protocol = params->crypto.control_port_ethertype;
1010 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
1011 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
1012 &params->crypto,
1013 sdata->vif.type);
1014
1015 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1016 vlan->control_port_protocol =
1017 params->crypto.control_port_ethertype;
1018 vlan->control_port_no_encrypt =
1019 params->crypto.control_port_no_encrypt;
1020 vlan->encrypt_headroom =
1021 ieee80211_cs_headroom(sdata->local,
1022 &params->crypto,
1023 vlan->vif.type);
1024 }
1025
1026 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1027 sdata->vif.bss_conf.dtim_period = params->dtim_period;
1028 sdata->vif.bss_conf.enable_beacon = true;
1029
1030 sdata->vif.bss_conf.ssid_len = params->ssid_len;
1031 if (params->ssid_len)
1032 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1033 params->ssid_len);
1034 sdata->vif.bss_conf.hidden_ssid =
1035 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1036
1037 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1038 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1039 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1040 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1041 if (params->p2p_opp_ps)
1042 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1043 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1044
1045 err = ieee80211_assign_beacon(sdata, &params->beacon);
1046 if (err < 0) {
1047 ieee80211_vif_release_channel(sdata);
1048 return err;
1049 }
1050 changed |= err;
1051
1052 err = drv_start_ap(sdata->local, sdata);
1053 if (err) {
1054 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1055
1056 if (old)
1057 kfree_rcu(old, rcu_head);
1058 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1059 ieee80211_vif_release_channel(sdata);
1060 return err;
1061 }
1062
1063 ieee80211_recalc_dtim(local, sdata);
1064 ieee80211_bss_info_change_notify(sdata, changed);
1065
1066 netif_carrier_on(dev);
1067 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1068 netif_carrier_on(vlan->dev);
1069
1070 return 0;
1071 }
1072
1073 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1074 struct cfg80211_beacon_data *params)
1075 {
1076 struct ieee80211_sub_if_data *sdata;
1077 struct beacon_data *old;
1078 int err;
1079
1080 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1081 sdata_assert_lock(sdata);
1082
1083 /* don't allow changing the beacon while CSA is in place - offset
1084 * of channel switch counter may change
1085 */
1086 if (sdata->vif.csa_active)
1087 return -EBUSY;
1088
1089 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1090 if (!old)
1091 return -ENOENT;
1092
1093 err = ieee80211_assign_beacon(sdata, params);
1094 if (err < 0)
1095 return err;
1096 ieee80211_bss_info_change_notify(sdata, err);
1097 return 0;
1098 }
1099
1100 bool ieee80211_csa_needs_block_tx(struct ieee80211_local *local)
1101 {
1102 struct ieee80211_sub_if_data *sdata;
1103
1104 lockdep_assert_held(&local->mtx);
1105
1106 rcu_read_lock();
1107 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
1108 if (!ieee80211_sdata_running(sdata))
1109 continue;
1110
1111 if (!sdata->vif.csa_active)
1112 continue;
1113
1114 if (!sdata->csa_block_tx)
1115 continue;
1116
1117 rcu_read_unlock();
1118 return true;
1119 }
1120 rcu_read_unlock();
1121
1122 return false;
1123 }
1124
1125 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1126 {
1127 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1128 struct ieee80211_sub_if_data *vlan;
1129 struct ieee80211_local *local = sdata->local;
1130 struct beacon_data *old_beacon;
1131 struct probe_resp *old_probe_resp;
1132 struct cfg80211_chan_def chandef;
1133
1134 sdata_assert_lock(sdata);
1135
1136 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1137 if (!old_beacon)
1138 return -ENOENT;
1139 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1140
1141 /* abort any running channel switch */
1142 mutex_lock(&local->mtx);
1143 sdata->vif.csa_active = false;
1144 if (!ieee80211_csa_needs_block_tx(local))
1145 ieee80211_wake_queues_by_reason(&local->hw,
1146 IEEE80211_MAX_QUEUE_MAP,
1147 IEEE80211_QUEUE_STOP_REASON_CSA);
1148 mutex_unlock(&local->mtx);
1149
1150 kfree(sdata->u.ap.next_beacon);
1151 sdata->u.ap.next_beacon = NULL;
1152
1153 /* turn off carrier for this interface and dependent VLANs */
1154 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1155 netif_carrier_off(vlan->dev);
1156 netif_carrier_off(dev);
1157
1158 /* remove beacon and probe response */
1159 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1160 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1161 kfree_rcu(old_beacon, rcu_head);
1162 if (old_probe_resp)
1163 kfree_rcu(old_probe_resp, rcu_head);
1164 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1165
1166 __sta_info_flush(sdata, true);
1167 ieee80211_free_keys(sdata, true);
1168
1169 sdata->vif.bss_conf.enable_beacon = false;
1170 sdata->vif.bss_conf.ssid_len = 0;
1171 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1172 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1173
1174 if (sdata->wdev.cac_started) {
1175 chandef = sdata->vif.bss_conf.chandef;
1176 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1177 cfg80211_cac_event(sdata->dev, &chandef,
1178 NL80211_RADAR_CAC_ABORTED,
1179 GFP_KERNEL);
1180 }
1181
1182 drv_stop_ap(sdata->local, sdata);
1183
1184 /* free all potentially still buffered bcast frames */
1185 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1186 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1187
1188 mutex_lock(&local->mtx);
1189 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1190 ieee80211_vif_release_channel(sdata);
1191 mutex_unlock(&local->mtx);
1192
1193 return 0;
1194 }
1195
1196 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1197 struct iapp_layer2_update {
1198 u8 da[ETH_ALEN]; /* broadcast */
1199 u8 sa[ETH_ALEN]; /* STA addr */
1200 __be16 len; /* 6 */
1201 u8 dsap; /* 0 */
1202 u8 ssap; /* 0 */
1203 u8 control;
1204 u8 xid_info[3];
1205 } __packed;
1206
1207 static void ieee80211_send_layer2_update(struct sta_info *sta)
1208 {
1209 struct iapp_layer2_update *msg;
1210 struct sk_buff *skb;
1211
1212 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1213 * bridge devices */
1214
1215 skb = dev_alloc_skb(sizeof(*msg));
1216 if (!skb)
1217 return;
1218 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1219
1220 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1221 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1222
1223 eth_broadcast_addr(msg->da);
1224 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1225 msg->len = htons(6);
1226 msg->dsap = 0;
1227 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1228 msg->control = 0xaf; /* XID response lsb.1111F101.
1229 * F=0 (no poll command; unsolicited frame) */
1230 msg->xid_info[0] = 0x81; /* XID format identifier */
1231 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1232 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1233
1234 skb->dev = sta->sdata->dev;
1235 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1236 memset(skb->cb, 0, sizeof(skb->cb));
1237 netif_rx_ni(skb);
1238 }
1239
1240 static int sta_apply_auth_flags(struct ieee80211_local *local,
1241 struct sta_info *sta,
1242 u32 mask, u32 set)
1243 {
1244 int ret;
1245
1246 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1247 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1248 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1249 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1250 if (ret)
1251 return ret;
1252 }
1253
1254 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1255 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1256 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1257 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1258 if (ret)
1259 return ret;
1260 }
1261
1262 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1263 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1264 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1265 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1266 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1267 else
1268 ret = 0;
1269 if (ret)
1270 return ret;
1271 }
1272
1273 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1274 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1275 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1276 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1277 if (ret)
1278 return ret;
1279 }
1280
1281 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1282 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1283 test_sta_flag(sta, WLAN_STA_AUTH)) {
1284 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1285 if (ret)
1286 return ret;
1287 }
1288
1289 return 0;
1290 }
1291
1292 static int sta_apply_parameters(struct ieee80211_local *local,
1293 struct sta_info *sta,
1294 struct station_parameters *params)
1295 {
1296 int ret = 0;
1297 struct ieee80211_supported_band *sband;
1298 struct ieee80211_sub_if_data *sdata = sta->sdata;
1299 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1300 u32 mask, set;
1301
1302 sband = local->hw.wiphy->bands[band];
1303
1304 mask = params->sta_flags_mask;
1305 set = params->sta_flags_set;
1306
1307 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1308 /*
1309 * In mesh mode, ASSOCIATED isn't part of the nl80211
1310 * API but must follow AUTHENTICATED for driver state.
1311 */
1312 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1313 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1314 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1315 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1316 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1317 /*
1318 * TDLS -- everything follows authorized, but
1319 * only becoming authorized is possible, not
1320 * going back
1321 */
1322 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1323 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1324 BIT(NL80211_STA_FLAG_ASSOCIATED);
1325 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1326 BIT(NL80211_STA_FLAG_ASSOCIATED);
1327 }
1328 }
1329
1330 ret = sta_apply_auth_flags(local, sta, mask, set);
1331 if (ret)
1332 return ret;
1333
1334 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1335 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1336 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1337 else
1338 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1339 }
1340
1341 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1342 if (set & BIT(NL80211_STA_FLAG_WME)) {
1343 set_sta_flag(sta, WLAN_STA_WME);
1344 sta->sta.wme = true;
1345 } else {
1346 clear_sta_flag(sta, WLAN_STA_WME);
1347 sta->sta.wme = false;
1348 }
1349 }
1350
1351 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1352 if (set & BIT(NL80211_STA_FLAG_MFP))
1353 set_sta_flag(sta, WLAN_STA_MFP);
1354 else
1355 clear_sta_flag(sta, WLAN_STA_MFP);
1356 }
1357
1358 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1359 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1360 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1361 else
1362 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1363 }
1364
1365 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1366 sta->sta.uapsd_queues = params->uapsd_queues;
1367 sta->sta.max_sp = params->max_sp;
1368 }
1369
1370 /*
1371 * cfg80211 validates this (1-2007) and allows setting the AID
1372 * only when creating a new station entry
1373 */
1374 if (params->aid)
1375 sta->sta.aid = params->aid;
1376
1377 /*
1378 * Some of the following updates would be racy if called on an
1379 * existing station, via ieee80211_change_station(). However,
1380 * all such changes are rejected by cfg80211 except for updates
1381 * changing the supported rates on an existing but not yet used
1382 * TDLS peer.
1383 */
1384
1385 if (params->listen_interval >= 0)
1386 sta->listen_interval = params->listen_interval;
1387
1388 if (params->supported_rates) {
1389 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1390 sband, params->supported_rates,
1391 params->supported_rates_len,
1392 &sta->sta.supp_rates[band]);
1393 }
1394
1395 if (params->ht_capa)
1396 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1397 params->ht_capa, sta);
1398
1399 if (params->vht_capa)
1400 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1401 params->vht_capa, sta);
1402
1403 if (params->opmode_notif_used) {
1404 /* returned value is only needed for rc update, but the
1405 * rc isn't initialized here yet, so ignore it
1406 */
1407 __ieee80211_vht_handle_opmode(sdata, sta,
1408 params->opmode_notif,
1409 band, false);
1410 }
1411
1412 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1413 #ifdef CONFIG_MAC80211_MESH
1414 u32 changed = 0;
1415
1416 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1417 switch (params->plink_state) {
1418 case NL80211_PLINK_ESTAB:
1419 if (sta->plink_state != NL80211_PLINK_ESTAB)
1420 changed = mesh_plink_inc_estab_count(
1421 sdata);
1422 sta->plink_state = params->plink_state;
1423
1424 ieee80211_mps_sta_status_update(sta);
1425 changed |= ieee80211_mps_set_sta_local_pm(sta,
1426 sdata->u.mesh.mshcfg.power_mode);
1427 break;
1428 case NL80211_PLINK_LISTEN:
1429 case NL80211_PLINK_BLOCKED:
1430 case NL80211_PLINK_OPN_SNT:
1431 case NL80211_PLINK_OPN_RCVD:
1432 case NL80211_PLINK_CNF_RCVD:
1433 case NL80211_PLINK_HOLDING:
1434 if (sta->plink_state == NL80211_PLINK_ESTAB)
1435 changed = mesh_plink_dec_estab_count(
1436 sdata);
1437 sta->plink_state = params->plink_state;
1438
1439 ieee80211_mps_sta_status_update(sta);
1440 changed |= ieee80211_mps_set_sta_local_pm(sta,
1441 NL80211_MESH_POWER_UNKNOWN);
1442 break;
1443 default:
1444 /* nothing */
1445 break;
1446 }
1447 }
1448
1449 switch (params->plink_action) {
1450 case NL80211_PLINK_ACTION_NO_ACTION:
1451 /* nothing */
1452 break;
1453 case NL80211_PLINK_ACTION_OPEN:
1454 changed |= mesh_plink_open(sta);
1455 break;
1456 case NL80211_PLINK_ACTION_BLOCK:
1457 changed |= mesh_plink_block(sta);
1458 break;
1459 }
1460
1461 if (params->local_pm)
1462 changed |=
1463 ieee80211_mps_set_sta_local_pm(sta,
1464 params->local_pm);
1465 ieee80211_mbss_info_change_notify(sdata, changed);
1466 #endif
1467 }
1468
1469 return 0;
1470 }
1471
1472 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1473 const u8 *mac,
1474 struct station_parameters *params)
1475 {
1476 struct ieee80211_local *local = wiphy_priv(wiphy);
1477 struct sta_info *sta;
1478 struct ieee80211_sub_if_data *sdata;
1479 int err;
1480 int layer2_update;
1481
1482 if (params->vlan) {
1483 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1484
1485 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1486 sdata->vif.type != NL80211_IFTYPE_AP)
1487 return -EINVAL;
1488 } else
1489 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490
1491 if (ether_addr_equal(mac, sdata->vif.addr))
1492 return -EINVAL;
1493
1494 if (is_multicast_ether_addr(mac))
1495 return -EINVAL;
1496
1497 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1498 if (!sta)
1499 return -ENOMEM;
1500
1501 /*
1502 * defaults -- if userspace wants something else we'll
1503 * change it accordingly in sta_apply_parameters()
1504 */
1505 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1506 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1507 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1508 } else {
1509 sta->sta.tdls = true;
1510 }
1511
1512 err = sta_apply_parameters(local, sta, params);
1513 if (err) {
1514 sta_info_free(local, sta);
1515 return err;
1516 }
1517
1518 /*
1519 * for TDLS, rate control should be initialized only when
1520 * rates are known and station is marked authorized
1521 */
1522 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1523 rate_control_rate_init(sta);
1524
1525 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1526 sdata->vif.type == NL80211_IFTYPE_AP;
1527
1528 err = sta_info_insert_rcu(sta);
1529 if (err) {
1530 rcu_read_unlock();
1531 return err;
1532 }
1533
1534 if (layer2_update)
1535 ieee80211_send_layer2_update(sta);
1536
1537 rcu_read_unlock();
1538
1539 return 0;
1540 }
1541
1542 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1543 const u8 *mac)
1544 {
1545 struct ieee80211_sub_if_data *sdata;
1546
1547 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549 if (mac)
1550 return sta_info_destroy_addr_bss(sdata, mac);
1551
1552 sta_info_flush(sdata);
1553 return 0;
1554 }
1555
1556 static int ieee80211_change_station(struct wiphy *wiphy,
1557 struct net_device *dev, const u8 *mac,
1558 struct station_parameters *params)
1559 {
1560 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1561 struct ieee80211_local *local = wiphy_priv(wiphy);
1562 struct sta_info *sta;
1563 struct ieee80211_sub_if_data *vlansdata;
1564 enum cfg80211_station_type statype;
1565 int err;
1566
1567 mutex_lock(&local->sta_mtx);
1568
1569 sta = sta_info_get_bss(sdata, mac);
1570 if (!sta) {
1571 err = -ENOENT;
1572 goto out_err;
1573 }
1574
1575 switch (sdata->vif.type) {
1576 case NL80211_IFTYPE_MESH_POINT:
1577 if (sdata->u.mesh.user_mpm)
1578 statype = CFG80211_STA_MESH_PEER_USER;
1579 else
1580 statype = CFG80211_STA_MESH_PEER_KERNEL;
1581 break;
1582 case NL80211_IFTYPE_ADHOC:
1583 statype = CFG80211_STA_IBSS;
1584 break;
1585 case NL80211_IFTYPE_STATION:
1586 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1587 statype = CFG80211_STA_AP_STA;
1588 break;
1589 }
1590 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1591 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1592 else
1593 statype = CFG80211_STA_TDLS_PEER_SETUP;
1594 break;
1595 case NL80211_IFTYPE_AP:
1596 case NL80211_IFTYPE_AP_VLAN:
1597 statype = CFG80211_STA_AP_CLIENT;
1598 break;
1599 default:
1600 err = -EOPNOTSUPP;
1601 goto out_err;
1602 }
1603
1604 err = cfg80211_check_station_change(wiphy, params, statype);
1605 if (err)
1606 goto out_err;
1607
1608 if (params->vlan && params->vlan != sta->sdata->dev) {
1609 bool prev_4addr = false;
1610 bool new_4addr = false;
1611
1612 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1613
1614 if (params->vlan->ieee80211_ptr->use_4addr) {
1615 if (vlansdata->u.vlan.sta) {
1616 err = -EBUSY;
1617 goto out_err;
1618 }
1619
1620 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1621 new_4addr = true;
1622 }
1623
1624 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1625 sta->sdata->u.vlan.sta) {
1626 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1627 prev_4addr = true;
1628 }
1629
1630 sta->sdata = vlansdata;
1631
1632 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1633 prev_4addr != new_4addr) {
1634 if (new_4addr)
1635 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1636 else
1637 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1638 }
1639
1640 ieee80211_send_layer2_update(sta);
1641 }
1642
1643 err = sta_apply_parameters(local, sta, params);
1644 if (err)
1645 goto out_err;
1646
1647 /* When peer becomes authorized, init rate control as well */
1648 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1649 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1650 rate_control_rate_init(sta);
1651
1652 mutex_unlock(&local->sta_mtx);
1653
1654 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1655 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1656 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1657 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1658 sta_info_tx_streams(sta) != 1) {
1659 ht_dbg(sta->sdata,
1660 "%pM just authorized and MIMO capable - update SMPS\n",
1661 sta->sta.addr);
1662 ieee80211_send_smps_action(sta->sdata,
1663 sta->sdata->bss->req_smps,
1664 sta->sta.addr,
1665 sta->sdata->vif.bss_conf.bssid);
1666 }
1667
1668 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1669 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1670 ieee80211_recalc_ps(local, -1);
1671 ieee80211_recalc_ps_vif(sdata);
1672 }
1673
1674 return 0;
1675 out_err:
1676 mutex_unlock(&local->sta_mtx);
1677 return err;
1678 }
1679
1680 #ifdef CONFIG_MAC80211_MESH
1681 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1682 const u8 *dst, const u8 *next_hop)
1683 {
1684 struct ieee80211_sub_if_data *sdata;
1685 struct mesh_path *mpath;
1686 struct sta_info *sta;
1687
1688 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1689
1690 rcu_read_lock();
1691 sta = sta_info_get(sdata, next_hop);
1692 if (!sta) {
1693 rcu_read_unlock();
1694 return -ENOENT;
1695 }
1696
1697 mpath = mesh_path_add(sdata, dst);
1698 if (IS_ERR(mpath)) {
1699 rcu_read_unlock();
1700 return PTR_ERR(mpath);
1701 }
1702
1703 mesh_path_fix_nexthop(mpath, sta);
1704
1705 rcu_read_unlock();
1706 return 0;
1707 }
1708
1709 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1710 const u8 *dst)
1711 {
1712 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1713
1714 if (dst)
1715 return mesh_path_del(sdata, dst);
1716
1717 mesh_path_flush_by_iface(sdata);
1718 return 0;
1719 }
1720
1721 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1722 const u8 *dst, const u8 *next_hop)
1723 {
1724 struct ieee80211_sub_if_data *sdata;
1725 struct mesh_path *mpath;
1726 struct sta_info *sta;
1727
1728 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1729
1730 rcu_read_lock();
1731
1732 sta = sta_info_get(sdata, next_hop);
1733 if (!sta) {
1734 rcu_read_unlock();
1735 return -ENOENT;
1736 }
1737
1738 mpath = mesh_path_lookup(sdata, dst);
1739 if (!mpath) {
1740 rcu_read_unlock();
1741 return -ENOENT;
1742 }
1743
1744 mesh_path_fix_nexthop(mpath, sta);
1745
1746 rcu_read_unlock();
1747 return 0;
1748 }
1749
1750 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1751 struct mpath_info *pinfo)
1752 {
1753 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1754
1755 if (next_hop_sta)
1756 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1757 else
1758 memset(next_hop, 0, ETH_ALEN);
1759
1760 memset(pinfo, 0, sizeof(*pinfo));
1761
1762 pinfo->generation = mesh_paths_generation;
1763
1764 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1765 MPATH_INFO_SN |
1766 MPATH_INFO_METRIC |
1767 MPATH_INFO_EXPTIME |
1768 MPATH_INFO_DISCOVERY_TIMEOUT |
1769 MPATH_INFO_DISCOVERY_RETRIES |
1770 MPATH_INFO_FLAGS;
1771
1772 pinfo->frame_qlen = mpath->frame_queue.qlen;
1773 pinfo->sn = mpath->sn;
1774 pinfo->metric = mpath->metric;
1775 if (time_before(jiffies, mpath->exp_time))
1776 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1777 pinfo->discovery_timeout =
1778 jiffies_to_msecs(mpath->discovery_timeout);
1779 pinfo->discovery_retries = mpath->discovery_retries;
1780 if (mpath->flags & MESH_PATH_ACTIVE)
1781 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1782 if (mpath->flags & MESH_PATH_RESOLVING)
1783 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1784 if (mpath->flags & MESH_PATH_SN_VALID)
1785 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1786 if (mpath->flags & MESH_PATH_FIXED)
1787 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1788 if (mpath->flags & MESH_PATH_RESOLVED)
1789 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1790 }
1791
1792 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1793 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1794
1795 {
1796 struct ieee80211_sub_if_data *sdata;
1797 struct mesh_path *mpath;
1798
1799 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800
1801 rcu_read_lock();
1802 mpath = mesh_path_lookup(sdata, dst);
1803 if (!mpath) {
1804 rcu_read_unlock();
1805 return -ENOENT;
1806 }
1807 memcpy(dst, mpath->dst, ETH_ALEN);
1808 mpath_set_pinfo(mpath, next_hop, pinfo);
1809 rcu_read_unlock();
1810 return 0;
1811 }
1812
1813 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1814 int idx, u8 *dst, u8 *next_hop,
1815 struct mpath_info *pinfo)
1816 {
1817 struct ieee80211_sub_if_data *sdata;
1818 struct mesh_path *mpath;
1819
1820 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1821
1822 rcu_read_lock();
1823 mpath = mesh_path_lookup_by_idx(sdata, idx);
1824 if (!mpath) {
1825 rcu_read_unlock();
1826 return -ENOENT;
1827 }
1828 memcpy(dst, mpath->dst, ETH_ALEN);
1829 mpath_set_pinfo(mpath, next_hop, pinfo);
1830 rcu_read_unlock();
1831 return 0;
1832 }
1833
1834 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1835 struct net_device *dev,
1836 struct mesh_config *conf)
1837 {
1838 struct ieee80211_sub_if_data *sdata;
1839 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1842 return 0;
1843 }
1844
1845 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1846 {
1847 return (mask >> (parm-1)) & 0x1;
1848 }
1849
1850 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1851 const struct mesh_setup *setup)
1852 {
1853 u8 *new_ie;
1854 const u8 *old_ie;
1855 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1856 struct ieee80211_sub_if_data, u.mesh);
1857
1858 /* allocate information elements */
1859 new_ie = NULL;
1860 old_ie = ifmsh->ie;
1861
1862 if (setup->ie_len) {
1863 new_ie = kmemdup(setup->ie, setup->ie_len,
1864 GFP_KERNEL);
1865 if (!new_ie)
1866 return -ENOMEM;
1867 }
1868 ifmsh->ie_len = setup->ie_len;
1869 ifmsh->ie = new_ie;
1870 kfree(old_ie);
1871
1872 /* now copy the rest of the setup parameters */
1873 ifmsh->mesh_id_len = setup->mesh_id_len;
1874 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1875 ifmsh->mesh_sp_id = setup->sync_method;
1876 ifmsh->mesh_pp_id = setup->path_sel_proto;
1877 ifmsh->mesh_pm_id = setup->path_metric;
1878 ifmsh->user_mpm = setup->user_mpm;
1879 ifmsh->mesh_auth_id = setup->auth_id;
1880 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1881 if (setup->is_authenticated)
1882 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1883 if (setup->is_secure)
1884 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1885
1886 /* mcast rate setting in Mesh Node */
1887 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1888 sizeof(setup->mcast_rate));
1889 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1890
1891 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1892 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1893
1894 return 0;
1895 }
1896
1897 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1898 struct net_device *dev, u32 mask,
1899 const struct mesh_config *nconf)
1900 {
1901 struct mesh_config *conf;
1902 struct ieee80211_sub_if_data *sdata;
1903 struct ieee80211_if_mesh *ifmsh;
1904
1905 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1906 ifmsh = &sdata->u.mesh;
1907
1908 /* Set the config options which we are interested in setting */
1909 conf = &(sdata->u.mesh.mshcfg);
1910 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1911 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1912 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1913 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1914 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1915 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1916 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1917 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1918 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1919 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1920 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1921 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1922 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1923 conf->element_ttl = nconf->element_ttl;
1924 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1925 if (ifmsh->user_mpm)
1926 return -EBUSY;
1927 conf->auto_open_plinks = nconf->auto_open_plinks;
1928 }
1929 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1930 conf->dot11MeshNbrOffsetMaxNeighbor =
1931 nconf->dot11MeshNbrOffsetMaxNeighbor;
1932 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1933 conf->dot11MeshHWMPmaxPREQretries =
1934 nconf->dot11MeshHWMPmaxPREQretries;
1935 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1936 conf->path_refresh_time = nconf->path_refresh_time;
1937 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1938 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1939 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1940 conf->dot11MeshHWMPactivePathTimeout =
1941 nconf->dot11MeshHWMPactivePathTimeout;
1942 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1943 conf->dot11MeshHWMPpreqMinInterval =
1944 nconf->dot11MeshHWMPpreqMinInterval;
1945 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1946 conf->dot11MeshHWMPperrMinInterval =
1947 nconf->dot11MeshHWMPperrMinInterval;
1948 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1949 mask))
1950 conf->dot11MeshHWMPnetDiameterTraversalTime =
1951 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1952 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1953 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1954 ieee80211_mesh_root_setup(ifmsh);
1955 }
1956 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1957 /* our current gate announcement implementation rides on root
1958 * announcements, so require this ifmsh to also be a root node
1959 * */
1960 if (nconf->dot11MeshGateAnnouncementProtocol &&
1961 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1962 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1963 ieee80211_mesh_root_setup(ifmsh);
1964 }
1965 conf->dot11MeshGateAnnouncementProtocol =
1966 nconf->dot11MeshGateAnnouncementProtocol;
1967 }
1968 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1969 conf->dot11MeshHWMPRannInterval =
1970 nconf->dot11MeshHWMPRannInterval;
1971 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1972 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1973 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1974 /* our RSSI threshold implementation is supported only for
1975 * devices that report signal in dBm.
1976 */
1977 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1978 return -ENOTSUPP;
1979 conf->rssi_threshold = nconf->rssi_threshold;
1980 }
1981 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1982 conf->ht_opmode = nconf->ht_opmode;
1983 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1984 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1985 }
1986 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1987 conf->dot11MeshHWMPactivePathToRootTimeout =
1988 nconf->dot11MeshHWMPactivePathToRootTimeout;
1989 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1990 conf->dot11MeshHWMProotInterval =
1991 nconf->dot11MeshHWMProotInterval;
1992 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1993 conf->dot11MeshHWMPconfirmationInterval =
1994 nconf->dot11MeshHWMPconfirmationInterval;
1995 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1996 conf->power_mode = nconf->power_mode;
1997 ieee80211_mps_local_status_update(sdata);
1998 }
1999 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2000 conf->dot11MeshAwakeWindowDuration =
2001 nconf->dot11MeshAwakeWindowDuration;
2002 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2003 conf->plink_timeout = nconf->plink_timeout;
2004 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2005 return 0;
2006 }
2007
2008 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2009 const struct mesh_config *conf,
2010 const struct mesh_setup *setup)
2011 {
2012 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2013 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2014 int err;
2015
2016 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2017 err = copy_mesh_setup(ifmsh, setup);
2018 if (err)
2019 return err;
2020
2021 /* can mesh use other SMPS modes? */
2022 sdata->smps_mode = IEEE80211_SMPS_OFF;
2023 sdata->needed_rx_chains = sdata->local->rx_chains;
2024
2025 mutex_lock(&sdata->local->mtx);
2026 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2027 IEEE80211_CHANCTX_SHARED);
2028 mutex_unlock(&sdata->local->mtx);
2029 if (err)
2030 return err;
2031
2032 return ieee80211_start_mesh(sdata);
2033 }
2034
2035 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2036 {
2037 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2038
2039 ieee80211_stop_mesh(sdata);
2040 mutex_lock(&sdata->local->mtx);
2041 ieee80211_vif_release_channel(sdata);
2042 mutex_unlock(&sdata->local->mtx);
2043
2044 return 0;
2045 }
2046 #endif
2047
2048 static int ieee80211_change_bss(struct wiphy *wiphy,
2049 struct net_device *dev,
2050 struct bss_parameters *params)
2051 {
2052 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2053 enum ieee80211_band band;
2054 u32 changed = 0;
2055
2056 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2057 return -ENOENT;
2058
2059 band = ieee80211_get_sdata_band(sdata);
2060
2061 if (params->use_cts_prot >= 0) {
2062 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2063 changed |= BSS_CHANGED_ERP_CTS_PROT;
2064 }
2065 if (params->use_short_preamble >= 0) {
2066 sdata->vif.bss_conf.use_short_preamble =
2067 params->use_short_preamble;
2068 changed |= BSS_CHANGED_ERP_PREAMBLE;
2069 }
2070
2071 if (!sdata->vif.bss_conf.use_short_slot &&
2072 band == IEEE80211_BAND_5GHZ) {
2073 sdata->vif.bss_conf.use_short_slot = true;
2074 changed |= BSS_CHANGED_ERP_SLOT;
2075 }
2076
2077 if (params->use_short_slot_time >= 0) {
2078 sdata->vif.bss_conf.use_short_slot =
2079 params->use_short_slot_time;
2080 changed |= BSS_CHANGED_ERP_SLOT;
2081 }
2082
2083 if (params->basic_rates) {
2084 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2085 wiphy->bands[band],
2086 params->basic_rates,
2087 params->basic_rates_len,
2088 &sdata->vif.bss_conf.basic_rates);
2089 changed |= BSS_CHANGED_BASIC_RATES;
2090 }
2091
2092 if (params->ap_isolate >= 0) {
2093 if (params->ap_isolate)
2094 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2095 else
2096 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2097 }
2098
2099 if (params->ht_opmode >= 0) {
2100 sdata->vif.bss_conf.ht_operation_mode =
2101 (u16) params->ht_opmode;
2102 changed |= BSS_CHANGED_HT;
2103 }
2104
2105 if (params->p2p_ctwindow >= 0) {
2106 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2107 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2108 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2109 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2110 changed |= BSS_CHANGED_P2P_PS;
2111 }
2112
2113 if (params->p2p_opp_ps > 0) {
2114 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2115 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2116 changed |= BSS_CHANGED_P2P_PS;
2117 } else if (params->p2p_opp_ps == 0) {
2118 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2119 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2120 changed |= BSS_CHANGED_P2P_PS;
2121 }
2122
2123 ieee80211_bss_info_change_notify(sdata, changed);
2124
2125 return 0;
2126 }
2127
2128 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2129 struct net_device *dev,
2130 struct ieee80211_txq_params *params)
2131 {
2132 struct ieee80211_local *local = wiphy_priv(wiphy);
2133 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2134 struct ieee80211_tx_queue_params p;
2135
2136 if (!local->ops->conf_tx)
2137 return -EOPNOTSUPP;
2138
2139 if (local->hw.queues < IEEE80211_NUM_ACS)
2140 return -EOPNOTSUPP;
2141
2142 memset(&p, 0, sizeof(p));
2143 p.aifs = params->aifs;
2144 p.cw_max = params->cwmax;
2145 p.cw_min = params->cwmin;
2146 p.txop = params->txop;
2147
2148 /*
2149 * Setting tx queue params disables u-apsd because it's only
2150 * called in master mode.
2151 */
2152 p.uapsd = false;
2153
2154 sdata->tx_conf[params->ac] = p;
2155 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2156 wiphy_debug(local->hw.wiphy,
2157 "failed to set TX queue parameters for AC %d\n",
2158 params->ac);
2159 return -EINVAL;
2160 }
2161
2162 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2163
2164 return 0;
2165 }
2166
2167 #ifdef CONFIG_PM
2168 static int ieee80211_suspend(struct wiphy *wiphy,
2169 struct cfg80211_wowlan *wowlan)
2170 {
2171 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2172 }
2173
2174 static int ieee80211_resume(struct wiphy *wiphy)
2175 {
2176 return __ieee80211_resume(wiphy_priv(wiphy));
2177 }
2178 #else
2179 #define ieee80211_suspend NULL
2180 #define ieee80211_resume NULL
2181 #endif
2182
2183 static int ieee80211_scan(struct wiphy *wiphy,
2184 struct cfg80211_scan_request *req)
2185 {
2186 struct ieee80211_sub_if_data *sdata;
2187
2188 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2189
2190 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2191 case NL80211_IFTYPE_STATION:
2192 case NL80211_IFTYPE_ADHOC:
2193 case NL80211_IFTYPE_MESH_POINT:
2194 case NL80211_IFTYPE_P2P_CLIENT:
2195 case NL80211_IFTYPE_P2P_DEVICE:
2196 break;
2197 case NL80211_IFTYPE_P2P_GO:
2198 if (sdata->local->ops->hw_scan)
2199 break;
2200 /*
2201 * FIXME: implement NoA while scanning in software,
2202 * for now fall through to allow scanning only when
2203 * beaconing hasn't been configured yet
2204 */
2205 case NL80211_IFTYPE_AP:
2206 /*
2207 * If the scan has been forced (and the driver supports
2208 * forcing), don't care about being beaconing already.
2209 * This will create problems to the attached stations (e.g. all
2210 * the frames sent while scanning on other channel will be
2211 * lost)
2212 */
2213 if (sdata->u.ap.beacon &&
2214 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2215 !(req->flags & NL80211_SCAN_FLAG_AP)))
2216 return -EOPNOTSUPP;
2217 break;
2218 default:
2219 return -EOPNOTSUPP;
2220 }
2221
2222 return ieee80211_request_scan(sdata, req);
2223 }
2224
2225 static int
2226 ieee80211_sched_scan_start(struct wiphy *wiphy,
2227 struct net_device *dev,
2228 struct cfg80211_sched_scan_request *req)
2229 {
2230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2231
2232 if (!sdata->local->ops->sched_scan_start)
2233 return -EOPNOTSUPP;
2234
2235 return ieee80211_request_sched_scan_start(sdata, req);
2236 }
2237
2238 static int
2239 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2240 {
2241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2242
2243 if (!sdata->local->ops->sched_scan_stop)
2244 return -EOPNOTSUPP;
2245
2246 return ieee80211_request_sched_scan_stop(sdata);
2247 }
2248
2249 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2250 struct cfg80211_auth_request *req)
2251 {
2252 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2253 }
2254
2255 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2256 struct cfg80211_assoc_request *req)
2257 {
2258 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2259 }
2260
2261 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2262 struct cfg80211_deauth_request *req)
2263 {
2264 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2265 }
2266
2267 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2268 struct cfg80211_disassoc_request *req)
2269 {
2270 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2271 }
2272
2273 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2274 struct cfg80211_ibss_params *params)
2275 {
2276 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2277 }
2278
2279 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2280 {
2281 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2282 }
2283
2284 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2285 int rate[IEEE80211_NUM_BANDS])
2286 {
2287 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2288
2289 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2290 sizeof(int) * IEEE80211_NUM_BANDS);
2291
2292 return 0;
2293 }
2294
2295 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2296 {
2297 struct ieee80211_local *local = wiphy_priv(wiphy);
2298 int err;
2299
2300 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2301 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2302
2303 if (err)
2304 return err;
2305 }
2306
2307 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2308 err = drv_set_coverage_class(local, wiphy->coverage_class);
2309
2310 if (err)
2311 return err;
2312 }
2313
2314 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2315 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2316
2317 if (err)
2318 return err;
2319 }
2320
2321 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2322 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2323 return -EINVAL;
2324 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2325 }
2326 if (changed & WIPHY_PARAM_RETRY_LONG) {
2327 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2328 return -EINVAL;
2329 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2330 }
2331 if (changed &
2332 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2333 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2334
2335 return 0;
2336 }
2337
2338 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2339 struct wireless_dev *wdev,
2340 enum nl80211_tx_power_setting type, int mbm)
2341 {
2342 struct ieee80211_local *local = wiphy_priv(wiphy);
2343 struct ieee80211_sub_if_data *sdata;
2344
2345 if (wdev) {
2346 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2347
2348 switch (type) {
2349 case NL80211_TX_POWER_AUTOMATIC:
2350 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2351 break;
2352 case NL80211_TX_POWER_LIMITED:
2353 case NL80211_TX_POWER_FIXED:
2354 if (mbm < 0 || (mbm % 100))
2355 return -EOPNOTSUPP;
2356 sdata->user_power_level = MBM_TO_DBM(mbm);
2357 break;
2358 }
2359
2360 ieee80211_recalc_txpower(sdata);
2361
2362 return 0;
2363 }
2364
2365 switch (type) {
2366 case NL80211_TX_POWER_AUTOMATIC:
2367 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2368 break;
2369 case NL80211_TX_POWER_LIMITED:
2370 case NL80211_TX_POWER_FIXED:
2371 if (mbm < 0 || (mbm % 100))
2372 return -EOPNOTSUPP;
2373 local->user_power_level = MBM_TO_DBM(mbm);
2374 break;
2375 }
2376
2377 mutex_lock(&local->iflist_mtx);
2378 list_for_each_entry(sdata, &local->interfaces, list)
2379 sdata->user_power_level = local->user_power_level;
2380 list_for_each_entry(sdata, &local->interfaces, list)
2381 ieee80211_recalc_txpower(sdata);
2382 mutex_unlock(&local->iflist_mtx);
2383
2384 return 0;
2385 }
2386
2387 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2388 struct wireless_dev *wdev,
2389 int *dbm)
2390 {
2391 struct ieee80211_local *local = wiphy_priv(wiphy);
2392 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2393
2394 if (!local->use_chanctx)
2395 *dbm = local->hw.conf.power_level;
2396 else
2397 *dbm = sdata->vif.bss_conf.txpower;
2398
2399 return 0;
2400 }
2401
2402 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2403 const u8 *addr)
2404 {
2405 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2406
2407 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2408
2409 return 0;
2410 }
2411
2412 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2413 {
2414 struct ieee80211_local *local = wiphy_priv(wiphy);
2415
2416 drv_rfkill_poll(local);
2417 }
2418
2419 #ifdef CONFIG_NL80211_TESTMODE
2420 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2421 struct wireless_dev *wdev,
2422 void *data, int len)
2423 {
2424 struct ieee80211_local *local = wiphy_priv(wiphy);
2425 struct ieee80211_vif *vif = NULL;
2426
2427 if (!local->ops->testmode_cmd)
2428 return -EOPNOTSUPP;
2429
2430 if (wdev) {
2431 struct ieee80211_sub_if_data *sdata;
2432
2433 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2434 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2435 vif = &sdata->vif;
2436 }
2437
2438 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2439 }
2440
2441 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2442 struct sk_buff *skb,
2443 struct netlink_callback *cb,
2444 void *data, int len)
2445 {
2446 struct ieee80211_local *local = wiphy_priv(wiphy);
2447
2448 if (!local->ops->testmode_dump)
2449 return -EOPNOTSUPP;
2450
2451 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2452 }
2453 #endif
2454
2455 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2456 enum ieee80211_smps_mode smps_mode)
2457 {
2458 struct sta_info *sta;
2459 enum ieee80211_smps_mode old_req;
2460 int i;
2461
2462 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2463 return -EINVAL;
2464
2465 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2466 return 0;
2467
2468 old_req = sdata->u.ap.req_smps;
2469 sdata->u.ap.req_smps = smps_mode;
2470
2471 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2472 if (old_req == smps_mode ||
2473 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2474 return 0;
2475
2476 /* If no associated stations, there's no need to do anything */
2477 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2478 sdata->smps_mode = smps_mode;
2479 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2480 return 0;
2481 }
2482
2483 ht_dbg(sdata,
2484 "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2485 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2486
2487 mutex_lock(&sdata->local->sta_mtx);
2488 for (i = 0; i < STA_HASH_SIZE; i++) {
2489 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2490 lockdep_is_held(&sdata->local->sta_mtx));
2491 sta;
2492 sta = rcu_dereference_protected(sta->hnext,
2493 lockdep_is_held(&sdata->local->sta_mtx))) {
2494 /*
2495 * Only stations associated to our AP and
2496 * associated VLANs
2497 */
2498 if (sta->sdata->bss != &sdata->u.ap)
2499 continue;
2500
2501 /* This station doesn't support MIMO - skip it */
2502 if (sta_info_tx_streams(sta) == 1)
2503 continue;
2504
2505 /*
2506 * Don't wake up a STA just to send the action frame
2507 * unless we are getting more restrictive.
2508 */
2509 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2510 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2511 smps_mode)) {
2512 ht_dbg(sdata,
2513 "Won't send SMPS to sleeping STA %pM\n",
2514 sta->sta.addr);
2515 continue;
2516 }
2517
2518 /*
2519 * If the STA is not authorized, wait until it gets
2520 * authorized and the action frame will be sent then.
2521 */
2522 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2523 continue;
2524
2525 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2526 ieee80211_send_smps_action(sdata, smps_mode,
2527 sta->sta.addr,
2528 sdata->vif.bss_conf.bssid);
2529 }
2530 }
2531 mutex_unlock(&sdata->local->sta_mtx);
2532
2533 sdata->smps_mode = smps_mode;
2534 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2535
2536 return 0;
2537 }
2538
2539 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2540 enum ieee80211_smps_mode smps_mode)
2541 {
2542 const u8 *ap;
2543 enum ieee80211_smps_mode old_req;
2544 int err;
2545
2546 lockdep_assert_held(&sdata->wdev.mtx);
2547
2548 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2549 return -EINVAL;
2550
2551 old_req = sdata->u.mgd.req_smps;
2552 sdata->u.mgd.req_smps = smps_mode;
2553
2554 if (old_req == smps_mode &&
2555 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2556 return 0;
2557
2558 /*
2559 * If not associated, or current association is not an HT
2560 * association, there's no need to do anything, just store
2561 * the new value until we associate.
2562 */
2563 if (!sdata->u.mgd.associated ||
2564 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2565 return 0;
2566
2567 ap = sdata->u.mgd.associated->bssid;
2568
2569 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2570 if (sdata->u.mgd.powersave)
2571 smps_mode = IEEE80211_SMPS_DYNAMIC;
2572 else
2573 smps_mode = IEEE80211_SMPS_OFF;
2574 }
2575
2576 /* send SM PS frame to AP */
2577 err = ieee80211_send_smps_action(sdata, smps_mode,
2578 ap, ap);
2579 if (err)
2580 sdata->u.mgd.req_smps = old_req;
2581
2582 return err;
2583 }
2584
2585 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2586 bool enabled, int timeout)
2587 {
2588 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2589 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2590
2591 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2592 return -EOPNOTSUPP;
2593
2594 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2595 return -EOPNOTSUPP;
2596
2597 if (enabled == sdata->u.mgd.powersave &&
2598 timeout == local->dynamic_ps_forced_timeout)
2599 return 0;
2600
2601 sdata->u.mgd.powersave = enabled;
2602 local->dynamic_ps_forced_timeout = timeout;
2603
2604 /* no change, but if automatic follow powersave */
2605 sdata_lock(sdata);
2606 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2607 sdata_unlock(sdata);
2608
2609 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2610 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2611
2612 ieee80211_recalc_ps(local, -1);
2613 ieee80211_recalc_ps_vif(sdata);
2614
2615 return 0;
2616 }
2617
2618 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2619 struct net_device *dev,
2620 s32 rssi_thold, u32 rssi_hyst)
2621 {
2622 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2623 struct ieee80211_vif *vif = &sdata->vif;
2624 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2625
2626 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2627 rssi_hyst == bss_conf->cqm_rssi_hyst)
2628 return 0;
2629
2630 bss_conf->cqm_rssi_thold = rssi_thold;
2631 bss_conf->cqm_rssi_hyst = rssi_hyst;
2632
2633 /* tell the driver upon association, unless already associated */
2634 if (sdata->u.mgd.associated &&
2635 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2636 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2637
2638 return 0;
2639 }
2640
2641 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2642 struct net_device *dev,
2643 const u8 *addr,
2644 const struct cfg80211_bitrate_mask *mask)
2645 {
2646 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2647 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2648 int i, ret;
2649
2650 if (!ieee80211_sdata_running(sdata))
2651 return -ENETDOWN;
2652
2653 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2654 ret = drv_set_bitrate_mask(local, sdata, mask);
2655 if (ret)
2656 return ret;
2657 }
2658
2659 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2660 struct ieee80211_supported_band *sband = wiphy->bands[i];
2661 int j;
2662
2663 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2664 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2665 sizeof(mask->control[i].ht_mcs));
2666
2667 sdata->rc_has_mcs_mask[i] = false;
2668 if (!sband)
2669 continue;
2670
2671 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2672 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2673 sdata->rc_has_mcs_mask[i] = true;
2674 break;
2675 }
2676 }
2677
2678 return 0;
2679 }
2680
2681 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2682 struct ieee80211_sub_if_data *sdata,
2683 struct ieee80211_channel *channel,
2684 unsigned int duration, u64 *cookie,
2685 struct sk_buff *txskb,
2686 enum ieee80211_roc_type type)
2687 {
2688 struct ieee80211_roc_work *roc, *tmp;
2689 bool queued = false;
2690 int ret;
2691
2692 lockdep_assert_held(&local->mtx);
2693
2694 if (local->use_chanctx && !local->ops->remain_on_channel)
2695 return -EOPNOTSUPP;
2696
2697 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2698 if (!roc)
2699 return -ENOMEM;
2700
2701 /*
2702 * If the duration is zero, then the driver
2703 * wouldn't actually do anything. Set it to
2704 * 10 for now.
2705 *
2706 * TODO: cancel the off-channel operation
2707 * when we get the SKB's TX status and
2708 * the wait time was zero before.
2709 */
2710 if (!duration)
2711 duration = 10;
2712
2713 roc->chan = channel;
2714 roc->duration = duration;
2715 roc->req_duration = duration;
2716 roc->frame = txskb;
2717 roc->type = type;
2718 roc->mgmt_tx_cookie = (unsigned long)txskb;
2719 roc->sdata = sdata;
2720 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2721 INIT_LIST_HEAD(&roc->dependents);
2722
2723 /*
2724 * cookie is either the roc cookie (for normal roc)
2725 * or the SKB (for mgmt TX)
2726 */
2727 if (!txskb) {
2728 /* local->mtx protects this */
2729 local->roc_cookie_counter++;
2730 roc->cookie = local->roc_cookie_counter;
2731 /* wow, you wrapped 64 bits ... more likely a bug */
2732 if (WARN_ON(roc->cookie == 0)) {
2733 roc->cookie = 1;
2734 local->roc_cookie_counter++;
2735 }
2736 *cookie = roc->cookie;
2737 } else {
2738 *cookie = (unsigned long)txskb;
2739 }
2740
2741 /* if there's one pending or we're scanning, queue this one */
2742 if (!list_empty(&local->roc_list) ||
2743 local->scanning || local->radar_detect_enabled)
2744 goto out_check_combine;
2745
2746 /* if not HW assist, just queue & schedule work */
2747 if (!local->ops->remain_on_channel) {
2748 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2749 goto out_queue;
2750 }
2751
2752 /* otherwise actually kick it off here (for error handling) */
2753
2754 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2755 if (ret) {
2756 kfree(roc);
2757 return ret;
2758 }
2759
2760 roc->started = true;
2761 goto out_queue;
2762
2763 out_check_combine:
2764 list_for_each_entry(tmp, &local->roc_list, list) {
2765 if (tmp->chan != channel || tmp->sdata != sdata)
2766 continue;
2767
2768 /*
2769 * Extend this ROC if possible:
2770 *
2771 * If it hasn't started yet, just increase the duration
2772 * and add the new one to the list of dependents.
2773 * If the type of the new ROC has higher priority, modify the
2774 * type of the previous one to match that of the new one.
2775 */
2776 if (!tmp->started) {
2777 list_add_tail(&roc->list, &tmp->dependents);
2778 tmp->duration = max(tmp->duration, roc->duration);
2779 tmp->type = max(tmp->type, roc->type);
2780 queued = true;
2781 break;
2782 }
2783
2784 /* If it has already started, it's more difficult ... */
2785 if (local->ops->remain_on_channel) {
2786 unsigned long j = jiffies;
2787
2788 /*
2789 * In the offloaded ROC case, if it hasn't begun, add
2790 * this new one to the dependent list to be handled
2791 * when the master one begins. If it has begun,
2792 * check that there's still a minimum time left and
2793 * if so, start this one, transmitting the frame, but
2794 * add it to the list directly after this one with
2795 * a reduced time so we'll ask the driver to execute
2796 * it right after finishing the previous one, in the
2797 * hope that it'll also be executed right afterwards,
2798 * effectively extending the old one.
2799 * If there's no minimum time left, just add it to the
2800 * normal list.
2801 * TODO: the ROC type is ignored here, assuming that it
2802 * is better to immediately use the current ROC.
2803 */
2804 if (!tmp->hw_begun) {
2805 list_add_tail(&roc->list, &tmp->dependents);
2806 queued = true;
2807 break;
2808 }
2809
2810 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2811 tmp->hw_start_time +
2812 msecs_to_jiffies(tmp->duration))) {
2813 int new_dur;
2814
2815 ieee80211_handle_roc_started(roc);
2816
2817 new_dur = roc->duration -
2818 jiffies_to_msecs(tmp->hw_start_time +
2819 msecs_to_jiffies(
2820 tmp->duration) -
2821 j);
2822
2823 if (new_dur > 0) {
2824 /* add right after tmp */
2825 list_add(&roc->list, &tmp->list);
2826 } else {
2827 list_add_tail(&roc->list,
2828 &tmp->dependents);
2829 }
2830 queued = true;
2831 }
2832 } else if (del_timer_sync(&tmp->work.timer)) {
2833 unsigned long new_end;
2834
2835 /*
2836 * In the software ROC case, cancel the timer, if
2837 * that fails then the finish work is already
2838 * queued/pending and thus we queue the new ROC
2839 * normally, if that succeeds then we can extend
2840 * the timer duration and TX the frame (if any.)
2841 */
2842
2843 list_add_tail(&roc->list, &tmp->dependents);
2844 queued = true;
2845
2846 new_end = jiffies + msecs_to_jiffies(roc->duration);
2847
2848 /* ok, it was started & we canceled timer */
2849 if (time_after(new_end, tmp->work.timer.expires))
2850 mod_timer(&tmp->work.timer, new_end);
2851 else
2852 add_timer(&tmp->work.timer);
2853
2854 ieee80211_handle_roc_started(roc);
2855 }
2856 break;
2857 }
2858
2859 out_queue:
2860 if (!queued)
2861 list_add_tail(&roc->list, &local->roc_list);
2862
2863 return 0;
2864 }
2865
2866 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2867 struct wireless_dev *wdev,
2868 struct ieee80211_channel *chan,
2869 unsigned int duration,
2870 u64 *cookie)
2871 {
2872 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2873 struct ieee80211_local *local = sdata->local;
2874 int ret;
2875
2876 mutex_lock(&local->mtx);
2877 ret = ieee80211_start_roc_work(local, sdata, chan,
2878 duration, cookie, NULL,
2879 IEEE80211_ROC_TYPE_NORMAL);
2880 mutex_unlock(&local->mtx);
2881
2882 return ret;
2883 }
2884
2885 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2886 u64 cookie, bool mgmt_tx)
2887 {
2888 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2889 int ret;
2890
2891 mutex_lock(&local->mtx);
2892 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2893 struct ieee80211_roc_work *dep, *tmp2;
2894
2895 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2896 if (!mgmt_tx && dep->cookie != cookie)
2897 continue;
2898 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2899 continue;
2900 /* found dependent item -- just remove it */
2901 list_del(&dep->list);
2902 mutex_unlock(&local->mtx);
2903
2904 ieee80211_roc_notify_destroy(dep, true);
2905 return 0;
2906 }
2907
2908 if (!mgmt_tx && roc->cookie != cookie)
2909 continue;
2910 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2911 continue;
2912
2913 found = roc;
2914 break;
2915 }
2916
2917 if (!found) {
2918 mutex_unlock(&local->mtx);
2919 return -ENOENT;
2920 }
2921
2922 /*
2923 * We found the item to cancel, so do that. Note that it
2924 * may have dependents, which we also cancel (and send
2925 * the expired signal for.) Not doing so would be quite
2926 * tricky here, but we may need to fix it later.
2927 */
2928
2929 if (local->ops->remain_on_channel) {
2930 if (found->started) {
2931 ret = drv_cancel_remain_on_channel(local);
2932 if (WARN_ON_ONCE(ret)) {
2933 mutex_unlock(&local->mtx);
2934 return ret;
2935 }
2936 }
2937
2938 list_del(&found->list);
2939
2940 if (found->started)
2941 ieee80211_start_next_roc(local);
2942 mutex_unlock(&local->mtx);
2943
2944 ieee80211_roc_notify_destroy(found, true);
2945 } else {
2946 /* work may be pending so use it all the time */
2947 found->abort = true;
2948 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2949
2950 mutex_unlock(&local->mtx);
2951
2952 /* work will clean up etc */
2953 flush_delayed_work(&found->work);
2954 WARN_ON(!found->to_be_freed);
2955 kfree(found);
2956 }
2957
2958 return 0;
2959 }
2960
2961 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2962 struct wireless_dev *wdev,
2963 u64 cookie)
2964 {
2965 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2966 struct ieee80211_local *local = sdata->local;
2967
2968 return ieee80211_cancel_roc(local, cookie, false);
2969 }
2970
2971 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2972 struct net_device *dev,
2973 struct cfg80211_chan_def *chandef,
2974 u32 cac_time_ms)
2975 {
2976 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2977 struct ieee80211_local *local = sdata->local;
2978 int err;
2979
2980 mutex_lock(&local->mtx);
2981 if (!list_empty(&local->roc_list) || local->scanning) {
2982 err = -EBUSY;
2983 goto out_unlock;
2984 }
2985
2986 /* whatever, but channel contexts should not complain about that one */
2987 sdata->smps_mode = IEEE80211_SMPS_OFF;
2988 sdata->needed_rx_chains = local->rx_chains;
2989
2990 err = ieee80211_vif_use_channel(sdata, chandef,
2991 IEEE80211_CHANCTX_SHARED);
2992 if (err)
2993 goto out_unlock;
2994
2995 ieee80211_queue_delayed_work(&sdata->local->hw,
2996 &sdata->dfs_cac_timer_work,
2997 msecs_to_jiffies(cac_time_ms));
2998
2999 out_unlock:
3000 mutex_unlock(&local->mtx);
3001 return err;
3002 }
3003
3004 static struct cfg80211_beacon_data *
3005 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
3006 {
3007 struct cfg80211_beacon_data *new_beacon;
3008 u8 *pos;
3009 int len;
3010
3011 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
3012 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
3013 beacon->probe_resp_len;
3014
3015 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
3016 if (!new_beacon)
3017 return NULL;
3018
3019 pos = (u8 *)(new_beacon + 1);
3020 if (beacon->head_len) {
3021 new_beacon->head_len = beacon->head_len;
3022 new_beacon->head = pos;
3023 memcpy(pos, beacon->head, beacon->head_len);
3024 pos += beacon->head_len;
3025 }
3026 if (beacon->tail_len) {
3027 new_beacon->tail_len = beacon->tail_len;
3028 new_beacon->tail = pos;
3029 memcpy(pos, beacon->tail, beacon->tail_len);
3030 pos += beacon->tail_len;
3031 }
3032 if (beacon->beacon_ies_len) {
3033 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
3034 new_beacon->beacon_ies = pos;
3035 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
3036 pos += beacon->beacon_ies_len;
3037 }
3038 if (beacon->proberesp_ies_len) {
3039 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
3040 new_beacon->proberesp_ies = pos;
3041 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
3042 pos += beacon->proberesp_ies_len;
3043 }
3044 if (beacon->assocresp_ies_len) {
3045 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
3046 new_beacon->assocresp_ies = pos;
3047 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
3048 pos += beacon->assocresp_ies_len;
3049 }
3050 if (beacon->probe_resp_len) {
3051 new_beacon->probe_resp_len = beacon->probe_resp_len;
3052 beacon->probe_resp = pos;
3053 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
3054 pos += beacon->probe_resp_len;
3055 }
3056
3057 return new_beacon;
3058 }
3059
3060 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3061 {
3062 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3063
3064 ieee80211_queue_work(&sdata->local->hw,
3065 &sdata->csa_finalize_work);
3066 }
3067 EXPORT_SYMBOL(ieee80211_csa_finish);
3068
3069 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
3070 u32 *changed)
3071 {
3072 int err;
3073
3074 switch (sdata->vif.type) {
3075 case NL80211_IFTYPE_AP:
3076 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3077 kfree(sdata->u.ap.next_beacon);
3078 sdata->u.ap.next_beacon = NULL;
3079
3080 if (err < 0)
3081 return err;
3082 *changed |= err;
3083 break;
3084 case NL80211_IFTYPE_ADHOC:
3085 err = ieee80211_ibss_finish_csa(sdata);
3086 if (err < 0)
3087 return err;
3088 *changed |= err;
3089 break;
3090 #ifdef CONFIG_MAC80211_MESH
3091 case NL80211_IFTYPE_MESH_POINT:
3092 err = ieee80211_mesh_finish_csa(sdata);
3093 if (err < 0)
3094 return err;
3095 *changed |= err;
3096 break;
3097 #endif
3098 default:
3099 WARN_ON(1);
3100 return -EINVAL;
3101 }
3102
3103 return 0;
3104 }
3105
3106 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3107 {
3108 struct ieee80211_local *local = sdata->local;
3109 u32 changed = 0;
3110 int err;
3111
3112 sdata_assert_lock(sdata);
3113 lockdep_assert_held(&local->mtx);
3114
3115 sdata->radar_required = sdata->csa_radar_required;
3116 err = ieee80211_vif_change_channel(sdata, &changed);
3117 if (err < 0)
3118 return err;
3119
3120 if (!local->use_chanctx) {
3121 local->_oper_chandef = sdata->csa_chandef;
3122 ieee80211_hw_config(local, 0);
3123 }
3124
3125 sdata->vif.csa_active = false;
3126
3127 err = ieee80211_set_after_csa_beacon(sdata, &changed);
3128 if (err)
3129 return err;
3130
3131 ieee80211_bss_info_change_notify(sdata, changed);
3132 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3133
3134 if (!ieee80211_csa_needs_block_tx(local))
3135 ieee80211_wake_queues_by_reason(&local->hw,
3136 IEEE80211_MAX_QUEUE_MAP,
3137 IEEE80211_QUEUE_STOP_REASON_CSA);
3138
3139 return 0;
3140 }
3141
3142 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3143 {
3144 if (__ieee80211_csa_finalize(sdata)) {
3145 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3146 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3147 GFP_KERNEL);
3148 }
3149 }
3150
3151 void ieee80211_csa_finalize_work(struct work_struct *work)
3152 {
3153 struct ieee80211_sub_if_data *sdata =
3154 container_of(work, struct ieee80211_sub_if_data,
3155 csa_finalize_work);
3156 struct ieee80211_local *local = sdata->local;
3157
3158 sdata_lock(sdata);
3159 mutex_lock(&local->mtx);
3160
3161 /* AP might have been stopped while waiting for the lock. */
3162 if (!sdata->vif.csa_active)
3163 goto unlock;
3164
3165 if (!ieee80211_sdata_running(sdata))
3166 goto unlock;
3167
3168 ieee80211_csa_finalize(sdata);
3169
3170 unlock:
3171 mutex_unlock(&local->mtx);
3172 sdata_unlock(sdata);
3173 }
3174
3175 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3176 struct cfg80211_csa_settings *params,
3177 u32 *changed)
3178 {
3179 int err;
3180
3181 switch (sdata->vif.type) {
3182 case NL80211_IFTYPE_AP:
3183 sdata->u.ap.next_beacon =
3184 cfg80211_beacon_dup(&params->beacon_after);
3185 if (!sdata->u.ap.next_beacon)
3186 return -ENOMEM;
3187
3188 /*
3189 * With a count of 0, we don't have to wait for any
3190 * TBTT before switching, so complete the CSA
3191 * immediately. In theory, with a count == 1 we
3192 * should delay the switch until just before the next
3193 * TBTT, but that would complicate things so we switch
3194 * immediately too. If we would delay the switch
3195 * until the next TBTT, we would have to set the probe
3196 * response here.
3197 *
3198 * TODO: A channel switch with count <= 1 without
3199 * sending a CSA action frame is kind of useless,
3200 * because the clients won't know we're changing
3201 * channels. The action frame must be implemented
3202 * either here or in the userspace.
3203 */
3204 if (params->count <= 1)
3205 break;
3206
3207 if ((params->n_counter_offsets_beacon >
3208 IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3209 (params->n_counter_offsets_presp >
3210 IEEE80211_MAX_CSA_COUNTERS_NUM))
3211 return -EINVAL;
3212
3213 /* make sure we don't have garbage in other counters */
3214 memset(sdata->csa_counter_offset_beacon, 0,
3215 sizeof(sdata->csa_counter_offset_beacon));
3216 memset(sdata->csa_counter_offset_presp, 0,
3217 sizeof(sdata->csa_counter_offset_presp));
3218
3219 memcpy(sdata->csa_counter_offset_beacon,
3220 params->counter_offsets_beacon,
3221 params->n_counter_offsets_beacon * sizeof(u16));
3222 memcpy(sdata->csa_counter_offset_presp,
3223 params->counter_offsets_presp,
3224 params->n_counter_offsets_presp * sizeof(u16));
3225
3226 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3227 if (err < 0) {
3228 kfree(sdata->u.ap.next_beacon);
3229 return err;
3230 }
3231 *changed |= err;
3232
3233 break;
3234 case NL80211_IFTYPE_ADHOC:
3235 if (!sdata->vif.bss_conf.ibss_joined)
3236 return -EINVAL;
3237
3238 if (params->chandef.width != sdata->u.ibss.chandef.width)
3239 return -EINVAL;
3240
3241 switch (params->chandef.width) {
3242 case NL80211_CHAN_WIDTH_40:
3243 if (cfg80211_get_chandef_type(&params->chandef) !=
3244 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3245 return -EINVAL;
3246 case NL80211_CHAN_WIDTH_5:
3247 case NL80211_CHAN_WIDTH_10:
3248 case NL80211_CHAN_WIDTH_20_NOHT:
3249 case NL80211_CHAN_WIDTH_20:
3250 break;
3251 default:
3252 return -EINVAL;
3253 }
3254
3255 /* changes into another band are not supported */
3256 if (sdata->u.ibss.chandef.chan->band !=
3257 params->chandef.chan->band)
3258 return -EINVAL;
3259
3260 /* see comments in the NL80211_IFTYPE_AP block */
3261 if (params->count > 1) {
3262 err = ieee80211_ibss_csa_beacon(sdata, params);
3263 if (err < 0)
3264 return err;
3265 *changed |= err;
3266 }
3267
3268 ieee80211_send_action_csa(sdata, params);
3269
3270 break;
3271 #ifdef CONFIG_MAC80211_MESH
3272 case NL80211_IFTYPE_MESH_POINT: {
3273 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3274
3275 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3276 return -EINVAL;
3277
3278 /* changes into another band are not supported */
3279 if (sdata->vif.bss_conf.chandef.chan->band !=
3280 params->chandef.chan->band)
3281 return -EINVAL;
3282
3283 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3284 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3285 if (!ifmsh->pre_value)
3286 ifmsh->pre_value = 1;
3287 else
3288 ifmsh->pre_value++;
3289 }
3290
3291 /* see comments in the NL80211_IFTYPE_AP block */
3292 if (params->count > 1) {
3293 err = ieee80211_mesh_csa_beacon(sdata, params);
3294 if (err < 0) {
3295 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3296 return err;
3297 }
3298 *changed |= err;
3299 }
3300
3301 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3302 ieee80211_send_action_csa(sdata, params);
3303
3304 break;
3305 }
3306 #endif
3307 default:
3308 return -EOPNOTSUPP;
3309 }
3310
3311 return 0;
3312 }
3313
3314 static int
3315 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3316 struct cfg80211_csa_settings *params)
3317 {
3318 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3319 struct ieee80211_local *local = sdata->local;
3320 struct ieee80211_chanctx_conf *conf;
3321 struct ieee80211_chanctx *chanctx;
3322 int err, num_chanctx, changed = 0;
3323
3324 sdata_assert_lock(sdata);
3325 lockdep_assert_held(&local->mtx);
3326
3327 if (!list_empty(&local->roc_list) || local->scanning)
3328 return -EBUSY;
3329
3330 if (sdata->wdev.cac_started)
3331 return -EBUSY;
3332
3333 if (cfg80211_chandef_identical(&params->chandef,
3334 &sdata->vif.bss_conf.chandef))
3335 return -EINVAL;
3336
3337 mutex_lock(&local->chanctx_mtx);
3338 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3339 lockdep_is_held(&local->chanctx_mtx));
3340 if (!conf) {
3341 mutex_unlock(&local->chanctx_mtx);
3342 return -EBUSY;
3343 }
3344
3345 /* don't handle for multi-VIF cases */
3346 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3347 if (ieee80211_chanctx_refcount(local, chanctx) > 1) {
3348 mutex_unlock(&local->chanctx_mtx);
3349 return -EBUSY;
3350 }
3351 num_chanctx = 0;
3352 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3353 num_chanctx++;
3354 mutex_unlock(&local->chanctx_mtx);
3355
3356 if (num_chanctx > 1)
3357 return -EBUSY;
3358
3359 /* don't allow another channel switch if one is already active. */
3360 if (sdata->vif.csa_active)
3361 return -EBUSY;
3362
3363 err = ieee80211_set_csa_beacon(sdata, params, &changed);
3364 if (err)
3365 return err;
3366
3367 sdata->csa_radar_required = params->radar_required;
3368 sdata->csa_chandef = params->chandef;
3369 sdata->csa_block_tx = params->block_tx;
3370 sdata->csa_current_counter = params->count;
3371 sdata->vif.csa_active = true;
3372
3373 if (sdata->csa_block_tx)
3374 ieee80211_stop_queues_by_reason(&local->hw,
3375 IEEE80211_MAX_QUEUE_MAP,
3376 IEEE80211_QUEUE_STOP_REASON_CSA);
3377
3378 if (changed) {
3379 ieee80211_bss_info_change_notify(sdata, changed);
3380 drv_channel_switch_beacon(sdata, &params->chandef);
3381 } else {
3382 /* if the beacon didn't change, we can finalize immediately */
3383 ieee80211_csa_finalize(sdata);
3384 }
3385
3386 return 0;
3387 }
3388
3389 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3390 struct cfg80211_csa_settings *params)
3391 {
3392 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3393 struct ieee80211_local *local = sdata->local;
3394 int err;
3395
3396 mutex_lock(&local->mtx);
3397 err = __ieee80211_channel_switch(wiphy, dev, params);
3398 mutex_unlock(&local->mtx);
3399
3400 return err;
3401 }
3402
3403 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3404 struct cfg80211_mgmt_tx_params *params,
3405 u64 *cookie)
3406 {
3407 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3408 struct ieee80211_local *local = sdata->local;
3409 struct sk_buff *skb;
3410 struct sta_info *sta;
3411 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3412 bool need_offchan = false;
3413 u32 flags;
3414 int ret;
3415 u8 *data;
3416
3417 if (params->dont_wait_for_ack)
3418 flags = IEEE80211_TX_CTL_NO_ACK;
3419 else
3420 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3421 IEEE80211_TX_CTL_REQ_TX_STATUS;
3422
3423 if (params->no_cck)
3424 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3425
3426 switch (sdata->vif.type) {
3427 case NL80211_IFTYPE_ADHOC:
3428 if (!sdata->vif.bss_conf.ibss_joined)
3429 need_offchan = true;
3430 /* fall through */
3431 #ifdef CONFIG_MAC80211_MESH
3432 case NL80211_IFTYPE_MESH_POINT:
3433 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3434 !sdata->u.mesh.mesh_id_len)
3435 need_offchan = true;
3436 /* fall through */
3437 #endif
3438 case NL80211_IFTYPE_AP:
3439 case NL80211_IFTYPE_AP_VLAN:
3440 case NL80211_IFTYPE_P2P_GO:
3441 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3442 !ieee80211_vif_is_mesh(&sdata->vif) &&
3443 !rcu_access_pointer(sdata->bss->beacon))
3444 need_offchan = true;
3445 if (!ieee80211_is_action(mgmt->frame_control) ||
3446 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3447 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3448 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3449 break;
3450 rcu_read_lock();
3451 sta = sta_info_get(sdata, mgmt->da);
3452 rcu_read_unlock();
3453 if (!sta)
3454 return -ENOLINK;
3455 break;
3456 case NL80211_IFTYPE_STATION:
3457 case NL80211_IFTYPE_P2P_CLIENT:
3458 if (!sdata->u.mgd.associated)
3459 need_offchan = true;
3460 break;
3461 case NL80211_IFTYPE_P2P_DEVICE:
3462 need_offchan = true;
3463 break;
3464 default:
3465 return -EOPNOTSUPP;
3466 }
3467
3468 /* configurations requiring offchan cannot work if no channel has been
3469 * specified
3470 */
3471 if (need_offchan && !params->chan)
3472 return -EINVAL;
3473
3474 mutex_lock(&local->mtx);
3475
3476 /* Check if the operating channel is the requested channel */
3477 if (!need_offchan) {
3478 struct ieee80211_chanctx_conf *chanctx_conf;
3479
3480 rcu_read_lock();
3481 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3482
3483 if (chanctx_conf) {
3484 need_offchan = params->chan &&
3485 (params->chan !=
3486 chanctx_conf->def.chan);
3487 } else if (!params->chan) {
3488 ret = -EINVAL;
3489 rcu_read_unlock();
3490 goto out_unlock;
3491 } else {
3492 need_offchan = true;
3493 }
3494 rcu_read_unlock();
3495 }
3496
3497 if (need_offchan && !params->offchan) {
3498 ret = -EBUSY;
3499 goto out_unlock;
3500 }
3501
3502 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3503 if (!skb) {
3504 ret = -ENOMEM;
3505 goto out_unlock;
3506 }
3507 skb_reserve(skb, local->hw.extra_tx_headroom);
3508
3509 data = skb_put(skb, params->len);
3510 memcpy(data, params->buf, params->len);
3511
3512 /* Update CSA counters */
3513 if (sdata->vif.csa_active &&
3514 (sdata->vif.type == NL80211_IFTYPE_AP ||
3515 sdata->vif.type == NL80211_IFTYPE_ADHOC) &&
3516 params->n_csa_offsets) {
3517 int i;
3518 u8 c = sdata->csa_current_counter;
3519
3520 for (i = 0; i < params->n_csa_offsets; i++)
3521 data[params->csa_offsets[i]] = c;
3522 }
3523
3524 IEEE80211_SKB_CB(skb)->flags = flags;
3525
3526 skb->dev = sdata->dev;
3527
3528 if (!need_offchan) {
3529 *cookie = (unsigned long) skb;
3530 ieee80211_tx_skb(sdata, skb);
3531 ret = 0;
3532 goto out_unlock;
3533 }
3534
3535 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3536 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3537 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3538 IEEE80211_SKB_CB(skb)->hw_queue =
3539 local->hw.offchannel_tx_hw_queue;
3540
3541 /* This will handle all kinds of coalescing and immediate TX */
3542 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3543 params->wait, cookie, skb,
3544 IEEE80211_ROC_TYPE_MGMT_TX);
3545 if (ret)
3546 kfree_skb(skb);
3547 out_unlock:
3548 mutex_unlock(&local->mtx);
3549 return ret;
3550 }
3551
3552 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3553 struct wireless_dev *wdev,
3554 u64 cookie)
3555 {
3556 struct ieee80211_local *local = wiphy_priv(wiphy);
3557
3558 return ieee80211_cancel_roc(local, cookie, true);
3559 }
3560
3561 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3562 struct wireless_dev *wdev,
3563 u16 frame_type, bool reg)
3564 {
3565 struct ieee80211_local *local = wiphy_priv(wiphy);
3566
3567 switch (frame_type) {
3568 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3569 if (reg)
3570 local->probe_req_reg++;
3571 else
3572 local->probe_req_reg--;
3573
3574 if (!local->open_count)
3575 break;
3576
3577 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3578 break;
3579 default:
3580 break;
3581 }
3582 }
3583
3584 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3585 {
3586 struct ieee80211_local *local = wiphy_priv(wiphy);
3587
3588 if (local->started)
3589 return -EOPNOTSUPP;
3590
3591 return drv_set_antenna(local, tx_ant, rx_ant);
3592 }
3593
3594 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3595 {
3596 struct ieee80211_local *local = wiphy_priv(wiphy);
3597
3598 return drv_get_antenna(local, tx_ant, rx_ant);
3599 }
3600
3601 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3602 {
3603 struct ieee80211_local *local = wiphy_priv(wiphy);
3604
3605 return drv_set_ringparam(local, tx, rx);
3606 }
3607
3608 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3609 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3610 {
3611 struct ieee80211_local *local = wiphy_priv(wiphy);
3612
3613 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3614 }
3615
3616 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3617 struct net_device *dev,
3618 struct cfg80211_gtk_rekey_data *data)
3619 {
3620 struct ieee80211_local *local = wiphy_priv(wiphy);
3621 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3622
3623 if (!local->ops->set_rekey_data)
3624 return -EOPNOTSUPP;
3625
3626 drv_set_rekey_data(local, sdata, data);
3627
3628 return 0;
3629 }
3630
3631 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3632 const u8 *peer, u64 *cookie)
3633 {
3634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3635 struct ieee80211_local *local = sdata->local;
3636 struct ieee80211_qos_hdr *nullfunc;
3637 struct sk_buff *skb;
3638 int size = sizeof(*nullfunc);
3639 __le16 fc;
3640 bool qos;
3641 struct ieee80211_tx_info *info;
3642 struct sta_info *sta;
3643 struct ieee80211_chanctx_conf *chanctx_conf;
3644 enum ieee80211_band band;
3645
3646 rcu_read_lock();
3647 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3648 if (WARN_ON(!chanctx_conf)) {
3649 rcu_read_unlock();
3650 return -EINVAL;
3651 }
3652 band = chanctx_conf->def.chan->band;
3653 sta = sta_info_get_bss(sdata, peer);
3654 if (sta) {
3655 qos = test_sta_flag(sta, WLAN_STA_WME);
3656 } else {
3657 rcu_read_unlock();
3658 return -ENOLINK;
3659 }
3660
3661 if (qos) {
3662 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3663 IEEE80211_STYPE_QOS_NULLFUNC |
3664 IEEE80211_FCTL_FROMDS);
3665 } else {
3666 size -= 2;
3667 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3668 IEEE80211_STYPE_NULLFUNC |
3669 IEEE80211_FCTL_FROMDS);
3670 }
3671
3672 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3673 if (!skb) {
3674 rcu_read_unlock();
3675 return -ENOMEM;
3676 }
3677
3678 skb->dev = dev;
3679
3680 skb_reserve(skb, local->hw.extra_tx_headroom);
3681
3682 nullfunc = (void *) skb_put(skb, size);
3683 nullfunc->frame_control = fc;
3684 nullfunc->duration_id = 0;
3685 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3686 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3687 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3688 nullfunc->seq_ctrl = 0;
3689
3690 info = IEEE80211_SKB_CB(skb);
3691
3692 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3693 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3694
3695 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3696 skb->priority = 7;
3697 if (qos)
3698 nullfunc->qos_ctrl = cpu_to_le16(7);
3699
3700 local_bh_disable();
3701 ieee80211_xmit(sdata, skb, band);
3702 local_bh_enable();
3703 rcu_read_unlock();
3704
3705 *cookie = (unsigned long) skb;
3706 return 0;
3707 }
3708
3709 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3710 struct wireless_dev *wdev,
3711 struct cfg80211_chan_def *chandef)
3712 {
3713 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3714 struct ieee80211_local *local = wiphy_priv(wiphy);
3715 struct ieee80211_chanctx_conf *chanctx_conf;
3716 int ret = -ENODATA;
3717
3718 rcu_read_lock();
3719 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3720 if (chanctx_conf) {
3721 *chandef = chanctx_conf->def;
3722 ret = 0;
3723 } else if (local->open_count > 0 &&
3724 local->open_count == local->monitors &&
3725 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3726 if (local->use_chanctx)
3727 *chandef = local->monitor_chandef;
3728 else
3729 *chandef = local->_oper_chandef;
3730 ret = 0;
3731 }
3732 rcu_read_unlock();
3733
3734 return ret;
3735 }
3736
3737 #ifdef CONFIG_PM
3738 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3739 {
3740 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3741 }
3742 #endif
3743
3744 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3745 struct net_device *dev,
3746 struct cfg80211_qos_map *qos_map)
3747 {
3748 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3749 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3750
3751 if (qos_map) {
3752 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3753 if (!new_qos_map)
3754 return -ENOMEM;
3755 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3756 } else {
3757 /* A NULL qos_map was passed to disable QoS mapping */
3758 new_qos_map = NULL;
3759 }
3760
3761 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3762 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3763 if (old_qos_map)
3764 kfree_rcu(old_qos_map, rcu_head);
3765
3766 return 0;
3767 }
3768
3769 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3770 struct net_device *dev,
3771 struct cfg80211_chan_def *chandef)
3772 {
3773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3774 int ret;
3775 u32 changed = 0;
3776
3777 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3778 if (ret == 0)
3779 ieee80211_bss_info_change_notify(sdata, changed);
3780
3781 return ret;
3782 }
3783
3784 const struct cfg80211_ops mac80211_config_ops = {
3785 .add_virtual_intf = ieee80211_add_iface,
3786 .del_virtual_intf = ieee80211_del_iface,
3787 .change_virtual_intf = ieee80211_change_iface,
3788 .start_p2p_device = ieee80211_start_p2p_device,
3789 .stop_p2p_device = ieee80211_stop_p2p_device,
3790 .add_key = ieee80211_add_key,
3791 .del_key = ieee80211_del_key,
3792 .get_key = ieee80211_get_key,
3793 .set_default_key = ieee80211_config_default_key,
3794 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3795 .start_ap = ieee80211_start_ap,
3796 .change_beacon = ieee80211_change_beacon,
3797 .stop_ap = ieee80211_stop_ap,
3798 .add_station = ieee80211_add_station,
3799 .del_station = ieee80211_del_station,
3800 .change_station = ieee80211_change_station,
3801 .get_station = ieee80211_get_station,
3802 .dump_station = ieee80211_dump_station,
3803 .dump_survey = ieee80211_dump_survey,
3804 #ifdef CONFIG_MAC80211_MESH
3805 .add_mpath = ieee80211_add_mpath,
3806 .del_mpath = ieee80211_del_mpath,
3807 .change_mpath = ieee80211_change_mpath,
3808 .get_mpath = ieee80211_get_mpath,
3809 .dump_mpath = ieee80211_dump_mpath,
3810 .update_mesh_config = ieee80211_update_mesh_config,
3811 .get_mesh_config = ieee80211_get_mesh_config,
3812 .join_mesh = ieee80211_join_mesh,
3813 .leave_mesh = ieee80211_leave_mesh,
3814 #endif
3815 .change_bss = ieee80211_change_bss,
3816 .set_txq_params = ieee80211_set_txq_params,
3817 .set_monitor_channel = ieee80211_set_monitor_channel,
3818 .suspend = ieee80211_suspend,
3819 .resume = ieee80211_resume,
3820 .scan = ieee80211_scan,
3821 .sched_scan_start = ieee80211_sched_scan_start,
3822 .sched_scan_stop = ieee80211_sched_scan_stop,
3823 .auth = ieee80211_auth,
3824 .assoc = ieee80211_assoc,
3825 .deauth = ieee80211_deauth,
3826 .disassoc = ieee80211_disassoc,
3827 .join_ibss = ieee80211_join_ibss,
3828 .leave_ibss = ieee80211_leave_ibss,
3829 .set_mcast_rate = ieee80211_set_mcast_rate,
3830 .set_wiphy_params = ieee80211_set_wiphy_params,
3831 .set_tx_power = ieee80211_set_tx_power,
3832 .get_tx_power = ieee80211_get_tx_power,
3833 .set_wds_peer = ieee80211_set_wds_peer,
3834 .rfkill_poll = ieee80211_rfkill_poll,
3835 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3836 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3837 .set_power_mgmt = ieee80211_set_power_mgmt,
3838 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3839 .remain_on_channel = ieee80211_remain_on_channel,
3840 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3841 .mgmt_tx = ieee80211_mgmt_tx,
3842 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3843 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3844 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3845 .set_antenna = ieee80211_set_antenna,
3846 .get_antenna = ieee80211_get_antenna,
3847 .set_ringparam = ieee80211_set_ringparam,
3848 .get_ringparam = ieee80211_get_ringparam,
3849 .set_rekey_data = ieee80211_set_rekey_data,
3850 .tdls_oper = ieee80211_tdls_oper,
3851 .tdls_mgmt = ieee80211_tdls_mgmt,
3852 .probe_client = ieee80211_probe_client,
3853 .set_noack_map = ieee80211_set_noack_map,
3854 #ifdef CONFIG_PM
3855 .set_wakeup = ieee80211_set_wakeup,
3856 #endif
3857 .get_et_sset_count = ieee80211_get_et_sset_count,
3858 .get_et_stats = ieee80211_get_et_stats,
3859 .get_et_strings = ieee80211_get_et_strings,
3860 .get_channel = ieee80211_cfg_get_channel,
3861 .start_radar_detection = ieee80211_start_radar_detection,
3862 .channel_switch = ieee80211_channel_switch,
3863 .set_qos_map = ieee80211_set_qos_map,
3864 .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3865 };
(deprecated) Btrfs devel tree