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cfg80211: DFS get CAC time from regulatory database
[mirror_ubuntu-artful-kernel.git] / net / mac80211 / cfg.c
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 return ieee80211_do_open(wdev, true);
113 }
114
115 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
116 struct wireless_dev *wdev)
117 {
118 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
119 }
120
121 static int ieee80211_set_noack_map(struct wiphy *wiphy,
122 struct net_device *dev,
123 u16 noack_map)
124 {
125 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
126
127 sdata->noack_map = noack_map;
128 return 0;
129 }
130
131 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
132 u8 key_idx, bool pairwise, const u8 *mac_addr,
133 struct key_params *params)
134 {
135 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
136 struct ieee80211_local *local = sdata->local;
137 struct sta_info *sta = NULL;
138 const struct ieee80211_cipher_scheme *cs = NULL;
139 struct ieee80211_key *key;
140 int err;
141
142 if (!ieee80211_sdata_running(sdata))
143 return -ENETDOWN;
144
145 /* reject WEP and TKIP keys if WEP failed to initialize */
146 switch (params->cipher) {
147 case WLAN_CIPHER_SUITE_WEP40:
148 case WLAN_CIPHER_SUITE_TKIP:
149 case WLAN_CIPHER_SUITE_WEP104:
150 if (IS_ERR(local->wep_tx_tfm))
151 return -EINVAL;
152 break;
153 case WLAN_CIPHER_SUITE_CCMP:
154 case WLAN_CIPHER_SUITE_AES_CMAC:
155 case WLAN_CIPHER_SUITE_GCMP:
156 break;
157 default:
158 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
159 break;
160 }
161
162 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
163 params->key, params->seq_len, params->seq,
164 cs);
165 if (IS_ERR(key))
166 return PTR_ERR(key);
167
168 if (pairwise)
169 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
170
171 mutex_lock(&local->sta_mtx);
172
173 if (mac_addr) {
174 if (ieee80211_vif_is_mesh(&sdata->vif))
175 sta = sta_info_get(sdata, mac_addr);
176 else
177 sta = sta_info_get_bss(sdata, mac_addr);
178 /*
179 * The ASSOC test makes sure the driver is ready to
180 * receive the key. When wpa_supplicant has roamed
181 * using FT, it attempts to set the key before
182 * association has completed, this rejects that attempt
183 * so it will set the key again after assocation.
184 *
185 * TODO: accept the key if we have a station entry and
186 * add it to the device after the station.
187 */
188 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
189 ieee80211_key_free_unused(key);
190 err = -ENOENT;
191 goto out_unlock;
192 }
193 }
194
195 switch (sdata->vif.type) {
196 case NL80211_IFTYPE_STATION:
197 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
198 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
199 break;
200 case NL80211_IFTYPE_AP:
201 case NL80211_IFTYPE_AP_VLAN:
202 /* Keys without a station are used for TX only */
203 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
204 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
205 break;
206 case NL80211_IFTYPE_ADHOC:
207 /* no MFP (yet) */
208 break;
209 case NL80211_IFTYPE_MESH_POINT:
210 #ifdef CONFIG_MAC80211_MESH
211 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
212 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
213 break;
214 #endif
215 case NL80211_IFTYPE_WDS:
216 case NL80211_IFTYPE_MONITOR:
217 case NL80211_IFTYPE_P2P_DEVICE:
218 case NL80211_IFTYPE_UNSPECIFIED:
219 case NUM_NL80211_IFTYPES:
220 case NL80211_IFTYPE_P2P_CLIENT:
221 case NL80211_IFTYPE_P2P_GO:
222 /* shouldn't happen */
223 WARN_ON_ONCE(1);
224 break;
225 }
226
227 if (sta)
228 sta->cipher_scheme = cs;
229
230 err = ieee80211_key_link(key, sdata, sta);
231
232 out_unlock:
233 mutex_unlock(&local->sta_mtx);
234
235 return err;
236 }
237
238 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
239 u8 key_idx, bool pairwise, const u8 *mac_addr)
240 {
241 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
242 struct ieee80211_local *local = sdata->local;
243 struct sta_info *sta;
244 struct ieee80211_key *key = NULL;
245 int ret;
246
247 mutex_lock(&local->sta_mtx);
248 mutex_lock(&local->key_mtx);
249
250 if (mac_addr) {
251 ret = -ENOENT;
252
253 sta = sta_info_get_bss(sdata, mac_addr);
254 if (!sta)
255 goto out_unlock;
256
257 if (pairwise)
258 key = key_mtx_dereference(local, sta->ptk[key_idx]);
259 else
260 key = key_mtx_dereference(local, sta->gtk[key_idx]);
261 } else
262 key = key_mtx_dereference(local, sdata->keys[key_idx]);
263
264 if (!key) {
265 ret = -ENOENT;
266 goto out_unlock;
267 }
268
269 ieee80211_key_free(key, true);
270
271 ret = 0;
272 out_unlock:
273 mutex_unlock(&local->key_mtx);
274 mutex_unlock(&local->sta_mtx);
275
276 return ret;
277 }
278
279 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
280 u8 key_idx, bool pairwise, const u8 *mac_addr,
281 void *cookie,
282 void (*callback)(void *cookie,
283 struct key_params *params))
284 {
285 struct ieee80211_sub_if_data *sdata;
286 struct sta_info *sta = NULL;
287 u8 seq[6] = {0};
288 struct key_params params;
289 struct ieee80211_key *key = NULL;
290 u64 pn64;
291 u32 iv32;
292 u16 iv16;
293 int err = -ENOENT;
294
295 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
296
297 rcu_read_lock();
298
299 if (mac_addr) {
300 sta = sta_info_get_bss(sdata, mac_addr);
301 if (!sta)
302 goto out;
303
304 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
305 key = rcu_dereference(sta->ptk[key_idx]);
306 else if (!pairwise &&
307 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
308 key = rcu_dereference(sta->gtk[key_idx]);
309 } else
310 key = rcu_dereference(sdata->keys[key_idx]);
311
312 if (!key)
313 goto out;
314
315 memset(&params, 0, sizeof(params));
316
317 params.cipher = key->conf.cipher;
318
319 switch (key->conf.cipher) {
320 case WLAN_CIPHER_SUITE_TKIP:
321 iv32 = key->u.tkip.tx.iv32;
322 iv16 = key->u.tkip.tx.iv16;
323
324 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
325 drv_get_tkip_seq(sdata->local,
326 key->conf.hw_key_idx,
327 &iv32, &iv16);
328
329 seq[0] = iv16 & 0xff;
330 seq[1] = (iv16 >> 8) & 0xff;
331 seq[2] = iv32 & 0xff;
332 seq[3] = (iv32 >> 8) & 0xff;
333 seq[4] = (iv32 >> 16) & 0xff;
334 seq[5] = (iv32 >> 24) & 0xff;
335 params.seq = seq;
336 params.seq_len = 6;
337 break;
338 case WLAN_CIPHER_SUITE_CCMP:
339 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
340 seq[0] = pn64;
341 seq[1] = pn64 >> 8;
342 seq[2] = pn64 >> 16;
343 seq[3] = pn64 >> 24;
344 seq[4] = pn64 >> 32;
345 seq[5] = pn64 >> 40;
346 params.seq = seq;
347 params.seq_len = 6;
348 break;
349 case WLAN_CIPHER_SUITE_AES_CMAC:
350 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
351 seq[0] = pn64;
352 seq[1] = pn64 >> 8;
353 seq[2] = pn64 >> 16;
354 seq[3] = pn64 >> 24;
355 seq[4] = pn64 >> 32;
356 seq[5] = pn64 >> 40;
357 params.seq = seq;
358 params.seq_len = 6;
359 break;
360 }
361
362 params.key = key->conf.key;
363 params.key_len = key->conf.keylen;
364
365 callback(cookie, &params);
366 err = 0;
367
368 out:
369 rcu_read_unlock();
370 return err;
371 }
372
373 static int ieee80211_config_default_key(struct wiphy *wiphy,
374 struct net_device *dev,
375 u8 key_idx, bool uni,
376 bool multi)
377 {
378 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
379
380 ieee80211_set_default_key(sdata, key_idx, uni, multi);
381
382 return 0;
383 }
384
385 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
386 struct net_device *dev,
387 u8 key_idx)
388 {
389 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
390
391 ieee80211_set_default_mgmt_key(sdata, key_idx);
392
393 return 0;
394 }
395
396 void sta_set_rate_info_tx(struct sta_info *sta,
397 const struct ieee80211_tx_rate *rate,
398 struct rate_info *rinfo)
399 {
400 rinfo->flags = 0;
401 if (rate->flags & IEEE80211_TX_RC_MCS) {
402 rinfo->flags |= RATE_INFO_FLAGS_MCS;
403 rinfo->mcs = rate->idx;
404 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
405 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
406 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
407 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
408 } else {
409 struct ieee80211_supported_band *sband;
410 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
411 u16 brate;
412
413 sband = sta->local->hw.wiphy->bands[
414 ieee80211_get_sdata_band(sta->sdata)];
415 brate = sband->bitrates[rate->idx].bitrate;
416 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
417 }
418 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
419 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
420 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
421 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
422 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
423 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
424 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
425 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
426 }
427
428 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
429 {
430 rinfo->flags = 0;
431
432 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
433 rinfo->flags |= RATE_INFO_FLAGS_MCS;
434 rinfo->mcs = sta->last_rx_rate_idx;
435 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
436 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
437 rinfo->nss = sta->last_rx_rate_vht_nss;
438 rinfo->mcs = sta->last_rx_rate_idx;
439 } else {
440 struct ieee80211_supported_band *sband;
441 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
442 u16 brate;
443
444 sband = sta->local->hw.wiphy->bands[
445 ieee80211_get_sdata_band(sta->sdata)];
446 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate;
447 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
448 }
449
450 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
451 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
452 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
453 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
454 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ)
455 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
456 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80P80MHZ)
457 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
458 if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ)
459 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
460 }
461
462 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
463 {
464 struct ieee80211_sub_if_data *sdata = sta->sdata;
465 struct ieee80211_local *local = sdata->local;
466 struct timespec uptime;
467 u64 packets = 0;
468 int i, ac;
469
470 sinfo->generation = sdata->local->sta_generation;
471
472 sinfo->filled = STATION_INFO_INACTIVE_TIME |
473 STATION_INFO_RX_BYTES64 |
474 STATION_INFO_TX_BYTES64 |
475 STATION_INFO_RX_PACKETS |
476 STATION_INFO_TX_PACKETS |
477 STATION_INFO_TX_RETRIES |
478 STATION_INFO_TX_FAILED |
479 STATION_INFO_TX_BITRATE |
480 STATION_INFO_RX_BITRATE |
481 STATION_INFO_RX_DROP_MISC |
482 STATION_INFO_BSS_PARAM |
483 STATION_INFO_CONNECTED_TIME |
484 STATION_INFO_STA_FLAGS |
485 STATION_INFO_BEACON_LOSS_COUNT;
486
487 do_posix_clock_monotonic_gettime(&uptime);
488 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
489
490 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
491 sinfo->tx_bytes = 0;
492 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
493 sinfo->tx_bytes += sta->tx_bytes[ac];
494 packets += sta->tx_packets[ac];
495 }
496 sinfo->tx_packets = packets;
497 sinfo->rx_bytes = sta->rx_bytes;
498 sinfo->rx_packets = sta->rx_packets;
499 sinfo->tx_retries = sta->tx_retry_count;
500 sinfo->tx_failed = sta->tx_retry_failed;
501 sinfo->rx_dropped_misc = sta->rx_dropped;
502 sinfo->beacon_loss_count = sta->beacon_loss_count;
503
504 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
505 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
506 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
507 if (!local->ops->get_rssi ||
508 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
509 sinfo->signal = (s8)sta->last_signal;
510 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
511 }
512 if (sta->chains) {
513 sinfo->filled |= STATION_INFO_CHAIN_SIGNAL |
514 STATION_INFO_CHAIN_SIGNAL_AVG;
515
516 sinfo->chains = sta->chains;
517 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
518 sinfo->chain_signal[i] = sta->chain_signal_last[i];
519 sinfo->chain_signal_avg[i] =
520 (s8) -ewma_read(&sta->chain_signal_avg[i]);
521 }
522 }
523
524 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
525 sta_set_rate_info_rx(sta, &sinfo->rxrate);
526
527 if (ieee80211_vif_is_mesh(&sdata->vif)) {
528 #ifdef CONFIG_MAC80211_MESH
529 sinfo->filled |= STATION_INFO_LLID |
530 STATION_INFO_PLID |
531 STATION_INFO_PLINK_STATE |
532 STATION_INFO_LOCAL_PM |
533 STATION_INFO_PEER_PM |
534 STATION_INFO_NONPEER_PM;
535
536 sinfo->llid = sta->llid;
537 sinfo->plid = sta->plid;
538 sinfo->plink_state = sta->plink_state;
539 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
540 sinfo->filled |= STATION_INFO_T_OFFSET;
541 sinfo->t_offset = sta->t_offset;
542 }
543 sinfo->local_pm = sta->local_pm;
544 sinfo->peer_pm = sta->peer_pm;
545 sinfo->nonpeer_pm = sta->nonpeer_pm;
546 #endif
547 }
548
549 sinfo->bss_param.flags = 0;
550 if (sdata->vif.bss_conf.use_cts_prot)
551 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
552 if (sdata->vif.bss_conf.use_short_preamble)
553 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
554 if (sdata->vif.bss_conf.use_short_slot)
555 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
556 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
557 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
558
559 sinfo->sta_flags.set = 0;
560 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
561 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
562 BIT(NL80211_STA_FLAG_WME) |
563 BIT(NL80211_STA_FLAG_MFP) |
564 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
565 BIT(NL80211_STA_FLAG_ASSOCIATED) |
566 BIT(NL80211_STA_FLAG_TDLS_PEER);
567 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
568 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
569 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
570 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
571 if (test_sta_flag(sta, WLAN_STA_WME))
572 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
573 if (test_sta_flag(sta, WLAN_STA_MFP))
574 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
575 if (test_sta_flag(sta, WLAN_STA_AUTH))
576 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
577 if (test_sta_flag(sta, WLAN_STA_ASSOC))
578 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
579 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
580 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
581 }
582
583 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
584 "rx_packets", "rx_bytes", "wep_weak_iv_count",
585 "rx_duplicates", "rx_fragments", "rx_dropped",
586 "tx_packets", "tx_bytes", "tx_fragments",
587 "tx_filtered", "tx_retry_failed", "tx_retries",
588 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
589 "channel", "noise", "ch_time", "ch_time_busy",
590 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
591 };
592 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
593
594 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
595 struct net_device *dev,
596 int sset)
597 {
598 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
599 int rv = 0;
600
601 if (sset == ETH_SS_STATS)
602 rv += STA_STATS_LEN;
603
604 rv += drv_get_et_sset_count(sdata, sset);
605
606 if (rv == 0)
607 return -EOPNOTSUPP;
608 return rv;
609 }
610
611 static void ieee80211_get_et_stats(struct wiphy *wiphy,
612 struct net_device *dev,
613 struct ethtool_stats *stats,
614 u64 *data)
615 {
616 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
617 struct ieee80211_chanctx_conf *chanctx_conf;
618 struct ieee80211_channel *channel;
619 struct sta_info *sta;
620 struct ieee80211_local *local = sdata->local;
621 struct station_info sinfo;
622 struct survey_info survey;
623 int i, q;
624 #define STA_STATS_SURVEY_LEN 7
625
626 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
627
628 #define ADD_STA_STATS(sta) \
629 do { \
630 data[i++] += sta->rx_packets; \
631 data[i++] += sta->rx_bytes; \
632 data[i++] += sta->wep_weak_iv_count; \
633 data[i++] += sta->num_duplicates; \
634 data[i++] += sta->rx_fragments; \
635 data[i++] += sta->rx_dropped; \
636 \
637 data[i++] += sinfo.tx_packets; \
638 data[i++] += sinfo.tx_bytes; \
639 data[i++] += sta->tx_fragments; \
640 data[i++] += sta->tx_filtered_count; \
641 data[i++] += sta->tx_retry_failed; \
642 data[i++] += sta->tx_retry_count; \
643 data[i++] += sta->beacon_loss_count; \
644 } while (0)
645
646 /* For Managed stations, find the single station based on BSSID
647 * and use that. For interface types, iterate through all available
648 * stations and add stats for any station that is assigned to this
649 * network device.
650 */
651
652 mutex_lock(&local->sta_mtx);
653
654 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
655 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
656
657 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
658 goto do_survey;
659
660 sinfo.filled = 0;
661 sta_set_sinfo(sta, &sinfo);
662
663 i = 0;
664 ADD_STA_STATS(sta);
665
666 data[i++] = sta->sta_state;
667
668
669 if (sinfo.filled & STATION_INFO_TX_BITRATE)
670 data[i] = 100000 *
671 cfg80211_calculate_bitrate(&sinfo.txrate);
672 i++;
673 if (sinfo.filled & STATION_INFO_RX_BITRATE)
674 data[i] = 100000 *
675 cfg80211_calculate_bitrate(&sinfo.rxrate);
676 i++;
677
678 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
679 data[i] = (u8)sinfo.signal_avg;
680 i++;
681 } else {
682 list_for_each_entry(sta, &local->sta_list, list) {
683 /* Make sure this station belongs to the proper dev */
684 if (sta->sdata->dev != dev)
685 continue;
686
687 sinfo.filled = 0;
688 sta_set_sinfo(sta, &sinfo);
689 i = 0;
690 ADD_STA_STATS(sta);
691 }
692 }
693
694 do_survey:
695 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
696 /* Get survey stats for current channel */
697 survey.filled = 0;
698
699 rcu_read_lock();
700 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
701 if (chanctx_conf)
702 channel = chanctx_conf->def.chan;
703 else
704 channel = NULL;
705 rcu_read_unlock();
706
707 if (channel) {
708 q = 0;
709 do {
710 survey.filled = 0;
711 if (drv_get_survey(local, q, &survey) != 0) {
712 survey.filled = 0;
713 break;
714 }
715 q++;
716 } while (channel != survey.channel);
717 }
718
719 if (survey.filled)
720 data[i++] = survey.channel->center_freq;
721 else
722 data[i++] = 0;
723 if (survey.filled & SURVEY_INFO_NOISE_DBM)
724 data[i++] = (u8)survey.noise;
725 else
726 data[i++] = -1LL;
727 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
728 data[i++] = survey.channel_time;
729 else
730 data[i++] = -1LL;
731 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
732 data[i++] = survey.channel_time_busy;
733 else
734 data[i++] = -1LL;
735 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
736 data[i++] = survey.channel_time_ext_busy;
737 else
738 data[i++] = -1LL;
739 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
740 data[i++] = survey.channel_time_rx;
741 else
742 data[i++] = -1LL;
743 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
744 data[i++] = survey.channel_time_tx;
745 else
746 data[i++] = -1LL;
747
748 mutex_unlock(&local->sta_mtx);
749
750 if (WARN_ON(i != STA_STATS_LEN))
751 return;
752
753 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
754 }
755
756 static void ieee80211_get_et_strings(struct wiphy *wiphy,
757 struct net_device *dev,
758 u32 sset, u8 *data)
759 {
760 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
761 int sz_sta_stats = 0;
762
763 if (sset == ETH_SS_STATS) {
764 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
765 memcpy(data, ieee80211_gstrings_sta_stats, sz_sta_stats);
766 }
767 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
768 }
769
770 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
771 int idx, u8 *mac, struct station_info *sinfo)
772 {
773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
774 struct ieee80211_local *local = sdata->local;
775 struct sta_info *sta;
776 int ret = -ENOENT;
777
778 mutex_lock(&local->sta_mtx);
779
780 sta = sta_info_get_by_idx(sdata, idx);
781 if (sta) {
782 ret = 0;
783 memcpy(mac, sta->sta.addr, ETH_ALEN);
784 sta_set_sinfo(sta, sinfo);
785 }
786
787 mutex_unlock(&local->sta_mtx);
788
789 return ret;
790 }
791
792 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
793 int idx, struct survey_info *survey)
794 {
795 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
796
797 return drv_get_survey(local, idx, survey);
798 }
799
800 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
801 u8 *mac, struct station_info *sinfo)
802 {
803 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
804 struct ieee80211_local *local = sdata->local;
805 struct sta_info *sta;
806 int ret = -ENOENT;
807
808 mutex_lock(&local->sta_mtx);
809
810 sta = sta_info_get_bss(sdata, mac);
811 if (sta) {
812 ret = 0;
813 sta_set_sinfo(sta, sinfo);
814 }
815
816 mutex_unlock(&local->sta_mtx);
817
818 return ret;
819 }
820
821 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
822 struct cfg80211_chan_def *chandef)
823 {
824 struct ieee80211_local *local = wiphy_priv(wiphy);
825 struct ieee80211_sub_if_data *sdata;
826 int ret = 0;
827
828 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
829 return 0;
830
831 mutex_lock(&local->mtx);
832 mutex_lock(&local->iflist_mtx);
833 if (local->use_chanctx) {
834 sdata = rcu_dereference_protected(
835 local->monitor_sdata,
836 lockdep_is_held(&local->iflist_mtx));
837 if (sdata) {
838 ieee80211_vif_release_channel(sdata);
839 ret = ieee80211_vif_use_channel(sdata, chandef,
840 IEEE80211_CHANCTX_EXCLUSIVE);
841 }
842 } else if (local->open_count == local->monitors) {
843 local->_oper_chandef = *chandef;
844 ieee80211_hw_config(local, 0);
845 }
846
847 if (ret == 0)
848 local->monitor_chandef = *chandef;
849 mutex_unlock(&local->iflist_mtx);
850 mutex_unlock(&local->mtx);
851
852 return ret;
853 }
854
855 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
856 const u8 *resp, size_t resp_len)
857 {
858 struct probe_resp *new, *old;
859
860 if (!resp || !resp_len)
861 return 1;
862
863 old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
864
865 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
866 if (!new)
867 return -ENOMEM;
868
869 new->len = resp_len;
870 memcpy(new->data, resp, resp_len);
871
872 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
873 if (old)
874 kfree_rcu(old, rcu_head);
875
876 return 0;
877 }
878
879 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
880 struct cfg80211_beacon_data *params)
881 {
882 struct beacon_data *new, *old;
883 int new_head_len, new_tail_len;
884 int size, err;
885 u32 changed = BSS_CHANGED_BEACON;
886
887 old = sdata_dereference(sdata->u.ap.beacon, sdata);
888
889
890 /* Need to have a beacon head if we don't have one yet */
891 if (!params->head && !old)
892 return -EINVAL;
893
894 /* new or old head? */
895 if (params->head)
896 new_head_len = params->head_len;
897 else
898 new_head_len = old->head_len;
899
900 /* new or old tail? */
901 if (params->tail || !old)
902 /* params->tail_len will be zero for !params->tail */
903 new_tail_len = params->tail_len;
904 else
905 new_tail_len = old->tail_len;
906
907 size = sizeof(*new) + new_head_len + new_tail_len;
908
909 new = kzalloc(size, GFP_KERNEL);
910 if (!new)
911 return -ENOMEM;
912
913 /* start filling the new info now */
914
915 /*
916 * pointers go into the block we allocated,
917 * memory is | beacon_data | head | tail |
918 */
919 new->head = ((u8 *) new) + sizeof(*new);
920 new->tail = new->head + new_head_len;
921 new->head_len = new_head_len;
922 new->tail_len = new_tail_len;
923
924 /* copy in head */
925 if (params->head)
926 memcpy(new->head, params->head, new_head_len);
927 else
928 memcpy(new->head, old->head, new_head_len);
929
930 /* copy in optional tail */
931 if (params->tail)
932 memcpy(new->tail, params->tail, new_tail_len);
933 else
934 if (old)
935 memcpy(new->tail, old->tail, new_tail_len);
936
937 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
938 params->probe_resp_len);
939 if (err < 0)
940 return err;
941 if (err == 0)
942 changed |= BSS_CHANGED_AP_PROBE_RESP;
943
944 rcu_assign_pointer(sdata->u.ap.beacon, new);
945
946 if (old)
947 kfree_rcu(old, rcu_head);
948
949 return changed;
950 }
951
952 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
953 struct cfg80211_ap_settings *params)
954 {
955 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
956 struct ieee80211_local *local = sdata->local;
957 struct beacon_data *old;
958 struct ieee80211_sub_if_data *vlan;
959 u32 changed = BSS_CHANGED_BEACON_INT |
960 BSS_CHANGED_BEACON_ENABLED |
961 BSS_CHANGED_BEACON |
962 BSS_CHANGED_SSID |
963 BSS_CHANGED_P2P_PS;
964 int err;
965
966 old = sdata_dereference(sdata->u.ap.beacon, sdata);
967 if (old)
968 return -EALREADY;
969
970 /* TODO: make hostapd tell us what it wants */
971 sdata->smps_mode = IEEE80211_SMPS_OFF;
972 sdata->needed_rx_chains = sdata->local->rx_chains;
973
974 mutex_lock(&local->mtx);
975 sdata->radar_required = params->radar_required;
976 err = ieee80211_vif_use_channel(sdata, &params->chandef,
977 IEEE80211_CHANCTX_SHARED);
978 mutex_unlock(&local->mtx);
979 if (err)
980 return err;
981 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
982
983 /*
984 * Apply control port protocol, this allows us to
985 * not encrypt dynamic WEP control frames.
986 */
987 sdata->control_port_protocol = params->crypto.control_port_ethertype;
988 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
989 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
990 &params->crypto,
991 sdata->vif.type);
992
993 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
994 vlan->control_port_protocol =
995 params->crypto.control_port_ethertype;
996 vlan->control_port_no_encrypt =
997 params->crypto.control_port_no_encrypt;
998 vlan->encrypt_headroom =
999 ieee80211_cs_headroom(sdata->local,
1000 &params->crypto,
1001 vlan->vif.type);
1002 }
1003
1004 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
1005 sdata->vif.bss_conf.dtim_period = params->dtim_period;
1006 sdata->vif.bss_conf.enable_beacon = true;
1007
1008 sdata->vif.bss_conf.ssid_len = params->ssid_len;
1009 if (params->ssid_len)
1010 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
1011 params->ssid_len);
1012 sdata->vif.bss_conf.hidden_ssid =
1013 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
1014
1015 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1016 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
1017 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
1018 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1019 if (params->p2p_opp_ps)
1020 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1021 IEEE80211_P2P_OPPPS_ENABLE_BIT;
1022
1023 err = ieee80211_assign_beacon(sdata, &params->beacon);
1024 if (err < 0) {
1025 ieee80211_vif_release_channel(sdata);
1026 return err;
1027 }
1028 changed |= err;
1029
1030 err = drv_start_ap(sdata->local, sdata);
1031 if (err) {
1032 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1033
1034 if (old)
1035 kfree_rcu(old, rcu_head);
1036 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1037 ieee80211_vif_release_channel(sdata);
1038 return err;
1039 }
1040
1041 ieee80211_recalc_dtim(local, sdata);
1042 ieee80211_bss_info_change_notify(sdata, changed);
1043
1044 netif_carrier_on(dev);
1045 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1046 netif_carrier_on(vlan->dev);
1047
1048 return 0;
1049 }
1050
1051 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1052 struct cfg80211_beacon_data *params)
1053 {
1054 struct ieee80211_sub_if_data *sdata;
1055 struct beacon_data *old;
1056 int err;
1057
1058 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1059 sdata_assert_lock(sdata);
1060
1061 /* don't allow changing the beacon while CSA is in place - offset
1062 * of channel switch counter may change
1063 */
1064 if (sdata->vif.csa_active)
1065 return -EBUSY;
1066
1067 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1068 if (!old)
1069 return -ENOENT;
1070
1071 err = ieee80211_assign_beacon(sdata, params);
1072 if (err < 0)
1073 return err;
1074 ieee80211_bss_info_change_notify(sdata, err);
1075 return 0;
1076 }
1077
1078 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1079 {
1080 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1081 struct ieee80211_sub_if_data *vlan;
1082 struct ieee80211_local *local = sdata->local;
1083 struct beacon_data *old_beacon;
1084 struct probe_resp *old_probe_resp;
1085 struct cfg80211_chan_def chandef;
1086
1087 sdata_assert_lock(sdata);
1088
1089 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1090 if (!old_beacon)
1091 return -ENOENT;
1092 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1093
1094 /* abort any running channel switch */
1095 sdata->vif.csa_active = false;
1096 kfree(sdata->u.ap.next_beacon);
1097 sdata->u.ap.next_beacon = NULL;
1098
1099 /* turn off carrier for this interface and dependent VLANs */
1100 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1101 netif_carrier_off(vlan->dev);
1102 netif_carrier_off(dev);
1103
1104 /* remove beacon and probe response */
1105 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1106 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1107 kfree_rcu(old_beacon, rcu_head);
1108 if (old_probe_resp)
1109 kfree_rcu(old_probe_resp, rcu_head);
1110 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1111
1112 __sta_info_flush(sdata, true);
1113 ieee80211_free_keys(sdata, true);
1114
1115 sdata->vif.bss_conf.enable_beacon = false;
1116 sdata->vif.bss_conf.ssid_len = 0;
1117 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1118 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1119
1120 if (sdata->wdev.cac_started) {
1121 chandef = sdata->vif.bss_conf.chandef;
1122 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1123 cfg80211_cac_event(sdata->dev, &chandef,
1124 NL80211_RADAR_CAC_ABORTED,
1125 GFP_KERNEL);
1126 }
1127
1128 drv_stop_ap(sdata->local, sdata);
1129
1130 /* free all potentially still buffered bcast frames */
1131 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1132 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1133
1134 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1135 mutex_lock(&local->mtx);
1136 ieee80211_vif_release_channel(sdata);
1137 mutex_unlock(&local->mtx);
1138
1139 return 0;
1140 }
1141
1142 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1143 struct iapp_layer2_update {
1144 u8 da[ETH_ALEN]; /* broadcast */
1145 u8 sa[ETH_ALEN]; /* STA addr */
1146 __be16 len; /* 6 */
1147 u8 dsap; /* 0 */
1148 u8 ssap; /* 0 */
1149 u8 control;
1150 u8 xid_info[3];
1151 } __packed;
1152
1153 static void ieee80211_send_layer2_update(struct sta_info *sta)
1154 {
1155 struct iapp_layer2_update *msg;
1156 struct sk_buff *skb;
1157
1158 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1159 * bridge devices */
1160
1161 skb = dev_alloc_skb(sizeof(*msg));
1162 if (!skb)
1163 return;
1164 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1165
1166 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1167 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1168
1169 eth_broadcast_addr(msg->da);
1170 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1171 msg->len = htons(6);
1172 msg->dsap = 0;
1173 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1174 msg->control = 0xaf; /* XID response lsb.1111F101.
1175 * F=0 (no poll command; unsolicited frame) */
1176 msg->xid_info[0] = 0x81; /* XID format identifier */
1177 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1178 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1179
1180 skb->dev = sta->sdata->dev;
1181 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1182 memset(skb->cb, 0, sizeof(skb->cb));
1183 netif_rx_ni(skb);
1184 }
1185
1186 static int sta_apply_auth_flags(struct ieee80211_local *local,
1187 struct sta_info *sta,
1188 u32 mask, u32 set)
1189 {
1190 int ret;
1191
1192 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1193 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1194 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1195 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1196 if (ret)
1197 return ret;
1198 }
1199
1200 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1201 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1202 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1203 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1204 if (ret)
1205 return ret;
1206 }
1207
1208 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1209 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1210 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1211 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1212 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1213 else
1214 ret = 0;
1215 if (ret)
1216 return ret;
1217 }
1218
1219 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1220 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1221 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1222 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1223 if (ret)
1224 return ret;
1225 }
1226
1227 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1228 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1229 test_sta_flag(sta, WLAN_STA_AUTH)) {
1230 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1231 if (ret)
1232 return ret;
1233 }
1234
1235 return 0;
1236 }
1237
1238 static int sta_apply_parameters(struct ieee80211_local *local,
1239 struct sta_info *sta,
1240 struct station_parameters *params)
1241 {
1242 int ret = 0;
1243 struct ieee80211_supported_band *sband;
1244 struct ieee80211_sub_if_data *sdata = sta->sdata;
1245 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1246 u32 mask, set;
1247
1248 sband = local->hw.wiphy->bands[band];
1249
1250 mask = params->sta_flags_mask;
1251 set = params->sta_flags_set;
1252
1253 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1254 /*
1255 * In mesh mode, ASSOCIATED isn't part of the nl80211
1256 * API but must follow AUTHENTICATED for driver state.
1257 */
1258 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1259 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1260 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1261 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1262 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1263 /*
1264 * TDLS -- everything follows authorized, but
1265 * only becoming authorized is possible, not
1266 * going back
1267 */
1268 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1269 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1270 BIT(NL80211_STA_FLAG_ASSOCIATED);
1271 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1272 BIT(NL80211_STA_FLAG_ASSOCIATED);
1273 }
1274 }
1275
1276 ret = sta_apply_auth_flags(local, sta, mask, set);
1277 if (ret)
1278 return ret;
1279
1280 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1281 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1282 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1283 else
1284 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1285 }
1286
1287 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1288 if (set & BIT(NL80211_STA_FLAG_WME)) {
1289 set_sta_flag(sta, WLAN_STA_WME);
1290 sta->sta.wme = true;
1291 } else {
1292 clear_sta_flag(sta, WLAN_STA_WME);
1293 sta->sta.wme = false;
1294 }
1295 }
1296
1297 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1298 if (set & BIT(NL80211_STA_FLAG_MFP))
1299 set_sta_flag(sta, WLAN_STA_MFP);
1300 else
1301 clear_sta_flag(sta, WLAN_STA_MFP);
1302 }
1303
1304 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1305 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1306 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1307 else
1308 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1309 }
1310
1311 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1312 sta->sta.uapsd_queues = params->uapsd_queues;
1313 sta->sta.max_sp = params->max_sp;
1314 }
1315
1316 /*
1317 * cfg80211 validates this (1-2007) and allows setting the AID
1318 * only when creating a new station entry
1319 */
1320 if (params->aid)
1321 sta->sta.aid = params->aid;
1322
1323 /*
1324 * Some of the following updates would be racy if called on an
1325 * existing station, via ieee80211_change_station(). However,
1326 * all such changes are rejected by cfg80211 except for updates
1327 * changing the supported rates on an existing but not yet used
1328 * TDLS peer.
1329 */
1330
1331 if (params->listen_interval >= 0)
1332 sta->listen_interval = params->listen_interval;
1333
1334 if (params->supported_rates) {
1335 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1336 sband, params->supported_rates,
1337 params->supported_rates_len,
1338 &sta->sta.supp_rates[band]);
1339 }
1340
1341 if (params->ht_capa)
1342 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1343 params->ht_capa, sta);
1344
1345 if (params->vht_capa)
1346 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1347 params->vht_capa, sta);
1348
1349 if (params->opmode_notif_used) {
1350 /* returned value is only needed for rc update, but the
1351 * rc isn't initialized here yet, so ignore it
1352 */
1353 __ieee80211_vht_handle_opmode(sdata, sta,
1354 params->opmode_notif,
1355 band, false);
1356 }
1357
1358 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1359 #ifdef CONFIG_MAC80211_MESH
1360 u32 changed = 0;
1361
1362 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1363 switch (params->plink_state) {
1364 case NL80211_PLINK_ESTAB:
1365 if (sta->plink_state != NL80211_PLINK_ESTAB)
1366 changed = mesh_plink_inc_estab_count(
1367 sdata);
1368 sta->plink_state = params->plink_state;
1369
1370 ieee80211_mps_sta_status_update(sta);
1371 changed |= ieee80211_mps_set_sta_local_pm(sta,
1372 sdata->u.mesh.mshcfg.power_mode);
1373 break;
1374 case NL80211_PLINK_LISTEN:
1375 case NL80211_PLINK_BLOCKED:
1376 case NL80211_PLINK_OPN_SNT:
1377 case NL80211_PLINK_OPN_RCVD:
1378 case NL80211_PLINK_CNF_RCVD:
1379 case NL80211_PLINK_HOLDING:
1380 if (sta->plink_state == NL80211_PLINK_ESTAB)
1381 changed = mesh_plink_dec_estab_count(
1382 sdata);
1383 sta->plink_state = params->plink_state;
1384
1385 ieee80211_mps_sta_status_update(sta);
1386 changed |= ieee80211_mps_set_sta_local_pm(sta,
1387 NL80211_MESH_POWER_UNKNOWN);
1388 break;
1389 default:
1390 /* nothing */
1391 break;
1392 }
1393 }
1394
1395 switch (params->plink_action) {
1396 case NL80211_PLINK_ACTION_NO_ACTION:
1397 /* nothing */
1398 break;
1399 case NL80211_PLINK_ACTION_OPEN:
1400 changed |= mesh_plink_open(sta);
1401 break;
1402 case NL80211_PLINK_ACTION_BLOCK:
1403 changed |= mesh_plink_block(sta);
1404 break;
1405 }
1406
1407 if (params->local_pm)
1408 changed |=
1409 ieee80211_mps_set_sta_local_pm(sta,
1410 params->local_pm);
1411 ieee80211_mbss_info_change_notify(sdata, changed);
1412 #endif
1413 }
1414
1415 return 0;
1416 }
1417
1418 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1419 u8 *mac, struct station_parameters *params)
1420 {
1421 struct ieee80211_local *local = wiphy_priv(wiphy);
1422 struct sta_info *sta;
1423 struct ieee80211_sub_if_data *sdata;
1424 int err;
1425 int layer2_update;
1426
1427 if (params->vlan) {
1428 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1429
1430 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1431 sdata->vif.type != NL80211_IFTYPE_AP)
1432 return -EINVAL;
1433 } else
1434 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1435
1436 if (ether_addr_equal(mac, sdata->vif.addr))
1437 return -EINVAL;
1438
1439 if (is_multicast_ether_addr(mac))
1440 return -EINVAL;
1441
1442 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1443 if (!sta)
1444 return -ENOMEM;
1445
1446 /*
1447 * defaults -- if userspace wants something else we'll
1448 * change it accordingly in sta_apply_parameters()
1449 */
1450 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1451 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1452 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1453 }
1454
1455 err = sta_apply_parameters(local, sta, params);
1456 if (err) {
1457 sta_info_free(local, sta);
1458 return err;
1459 }
1460
1461 /*
1462 * for TDLS, rate control should be initialized only when
1463 * rates are known and station is marked authorized
1464 */
1465 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1466 rate_control_rate_init(sta);
1467
1468 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1469 sdata->vif.type == NL80211_IFTYPE_AP;
1470
1471 err = sta_info_insert_rcu(sta);
1472 if (err) {
1473 rcu_read_unlock();
1474 return err;
1475 }
1476
1477 if (layer2_update)
1478 ieee80211_send_layer2_update(sta);
1479
1480 rcu_read_unlock();
1481
1482 return 0;
1483 }
1484
1485 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1486 u8 *mac)
1487 {
1488 struct ieee80211_sub_if_data *sdata;
1489
1490 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1491
1492 if (mac)
1493 return sta_info_destroy_addr_bss(sdata, mac);
1494
1495 sta_info_flush(sdata);
1496 return 0;
1497 }
1498
1499 static int ieee80211_change_station(struct wiphy *wiphy,
1500 struct net_device *dev, u8 *mac,
1501 struct station_parameters *params)
1502 {
1503 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1504 struct ieee80211_local *local = wiphy_priv(wiphy);
1505 struct sta_info *sta;
1506 struct ieee80211_sub_if_data *vlansdata;
1507 enum cfg80211_station_type statype;
1508 int err;
1509
1510 mutex_lock(&local->sta_mtx);
1511
1512 sta = sta_info_get_bss(sdata, mac);
1513 if (!sta) {
1514 err = -ENOENT;
1515 goto out_err;
1516 }
1517
1518 switch (sdata->vif.type) {
1519 case NL80211_IFTYPE_MESH_POINT:
1520 if (sdata->u.mesh.user_mpm)
1521 statype = CFG80211_STA_MESH_PEER_USER;
1522 else
1523 statype = CFG80211_STA_MESH_PEER_KERNEL;
1524 break;
1525 case NL80211_IFTYPE_ADHOC:
1526 statype = CFG80211_STA_IBSS;
1527 break;
1528 case NL80211_IFTYPE_STATION:
1529 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1530 statype = CFG80211_STA_AP_STA;
1531 break;
1532 }
1533 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1534 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1535 else
1536 statype = CFG80211_STA_TDLS_PEER_SETUP;
1537 break;
1538 case NL80211_IFTYPE_AP:
1539 case NL80211_IFTYPE_AP_VLAN:
1540 statype = CFG80211_STA_AP_CLIENT;
1541 break;
1542 default:
1543 err = -EOPNOTSUPP;
1544 goto out_err;
1545 }
1546
1547 err = cfg80211_check_station_change(wiphy, params, statype);
1548 if (err)
1549 goto out_err;
1550
1551 if (params->vlan && params->vlan != sta->sdata->dev) {
1552 bool prev_4addr = false;
1553 bool new_4addr = false;
1554
1555 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1556
1557 if (params->vlan->ieee80211_ptr->use_4addr) {
1558 if (vlansdata->u.vlan.sta) {
1559 err = -EBUSY;
1560 goto out_err;
1561 }
1562
1563 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1564 new_4addr = true;
1565 }
1566
1567 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1568 sta->sdata->u.vlan.sta) {
1569 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1570 prev_4addr = true;
1571 }
1572
1573 sta->sdata = vlansdata;
1574
1575 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1576 prev_4addr != new_4addr) {
1577 if (new_4addr)
1578 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1579 else
1580 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1581 }
1582
1583 ieee80211_send_layer2_update(sta);
1584 }
1585
1586 err = sta_apply_parameters(local, sta, params);
1587 if (err)
1588 goto out_err;
1589
1590 /* When peer becomes authorized, init rate control as well */
1591 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1592 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1593 rate_control_rate_init(sta);
1594
1595 mutex_unlock(&local->sta_mtx);
1596
1597 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1598 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1599 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1600 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1601 sta_info_tx_streams(sta) != 1) {
1602 ht_dbg(sta->sdata,
1603 "%pM just authorized and MIMO capable - update SMPS\n",
1604 sta->sta.addr);
1605 ieee80211_send_smps_action(sta->sdata,
1606 sta->sdata->bss->req_smps,
1607 sta->sta.addr,
1608 sta->sdata->vif.bss_conf.bssid);
1609 }
1610
1611 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1612 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1613 ieee80211_recalc_ps(local, -1);
1614 ieee80211_recalc_ps_vif(sdata);
1615 }
1616
1617 return 0;
1618 out_err:
1619 mutex_unlock(&local->sta_mtx);
1620 return err;
1621 }
1622
1623 #ifdef CONFIG_MAC80211_MESH
1624 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1625 u8 *dst, u8 *next_hop)
1626 {
1627 struct ieee80211_sub_if_data *sdata;
1628 struct mesh_path *mpath;
1629 struct sta_info *sta;
1630
1631 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1632
1633 rcu_read_lock();
1634 sta = sta_info_get(sdata, next_hop);
1635 if (!sta) {
1636 rcu_read_unlock();
1637 return -ENOENT;
1638 }
1639
1640 mpath = mesh_path_add(sdata, dst);
1641 if (IS_ERR(mpath)) {
1642 rcu_read_unlock();
1643 return PTR_ERR(mpath);
1644 }
1645
1646 mesh_path_fix_nexthop(mpath, sta);
1647
1648 rcu_read_unlock();
1649 return 0;
1650 }
1651
1652 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1653 u8 *dst)
1654 {
1655 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1656
1657 if (dst)
1658 return mesh_path_del(sdata, dst);
1659
1660 mesh_path_flush_by_iface(sdata);
1661 return 0;
1662 }
1663
1664 static int ieee80211_change_mpath(struct wiphy *wiphy,
1665 struct net_device *dev,
1666 u8 *dst, u8 *next_hop)
1667 {
1668 struct ieee80211_sub_if_data *sdata;
1669 struct mesh_path *mpath;
1670 struct sta_info *sta;
1671
1672 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1673
1674 rcu_read_lock();
1675
1676 sta = sta_info_get(sdata, next_hop);
1677 if (!sta) {
1678 rcu_read_unlock();
1679 return -ENOENT;
1680 }
1681
1682 mpath = mesh_path_lookup(sdata, dst);
1683 if (!mpath) {
1684 rcu_read_unlock();
1685 return -ENOENT;
1686 }
1687
1688 mesh_path_fix_nexthop(mpath, sta);
1689
1690 rcu_read_unlock();
1691 return 0;
1692 }
1693
1694 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1695 struct mpath_info *pinfo)
1696 {
1697 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1698
1699 if (next_hop_sta)
1700 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1701 else
1702 memset(next_hop, 0, ETH_ALEN);
1703
1704 memset(pinfo, 0, sizeof(*pinfo));
1705
1706 pinfo->generation = mesh_paths_generation;
1707
1708 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1709 MPATH_INFO_SN |
1710 MPATH_INFO_METRIC |
1711 MPATH_INFO_EXPTIME |
1712 MPATH_INFO_DISCOVERY_TIMEOUT |
1713 MPATH_INFO_DISCOVERY_RETRIES |
1714 MPATH_INFO_FLAGS;
1715
1716 pinfo->frame_qlen = mpath->frame_queue.qlen;
1717 pinfo->sn = mpath->sn;
1718 pinfo->metric = mpath->metric;
1719 if (time_before(jiffies, mpath->exp_time))
1720 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1721 pinfo->discovery_timeout =
1722 jiffies_to_msecs(mpath->discovery_timeout);
1723 pinfo->discovery_retries = mpath->discovery_retries;
1724 if (mpath->flags & MESH_PATH_ACTIVE)
1725 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1726 if (mpath->flags & MESH_PATH_RESOLVING)
1727 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1728 if (mpath->flags & MESH_PATH_SN_VALID)
1729 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1730 if (mpath->flags & MESH_PATH_FIXED)
1731 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1732 if (mpath->flags & MESH_PATH_RESOLVED)
1733 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1734 }
1735
1736 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1737 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1738
1739 {
1740 struct ieee80211_sub_if_data *sdata;
1741 struct mesh_path *mpath;
1742
1743 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1744
1745 rcu_read_lock();
1746 mpath = mesh_path_lookup(sdata, dst);
1747 if (!mpath) {
1748 rcu_read_unlock();
1749 return -ENOENT;
1750 }
1751 memcpy(dst, mpath->dst, ETH_ALEN);
1752 mpath_set_pinfo(mpath, next_hop, pinfo);
1753 rcu_read_unlock();
1754 return 0;
1755 }
1756
1757 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1758 int idx, u8 *dst, u8 *next_hop,
1759 struct mpath_info *pinfo)
1760 {
1761 struct ieee80211_sub_if_data *sdata;
1762 struct mesh_path *mpath;
1763
1764 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1765
1766 rcu_read_lock();
1767 mpath = mesh_path_lookup_by_idx(sdata, idx);
1768 if (!mpath) {
1769 rcu_read_unlock();
1770 return -ENOENT;
1771 }
1772 memcpy(dst, mpath->dst, ETH_ALEN);
1773 mpath_set_pinfo(mpath, next_hop, pinfo);
1774 rcu_read_unlock();
1775 return 0;
1776 }
1777
1778 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1779 struct net_device *dev,
1780 struct mesh_config *conf)
1781 {
1782 struct ieee80211_sub_if_data *sdata;
1783 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1784
1785 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1786 return 0;
1787 }
1788
1789 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1790 {
1791 return (mask >> (parm-1)) & 0x1;
1792 }
1793
1794 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1795 const struct mesh_setup *setup)
1796 {
1797 u8 *new_ie;
1798 const u8 *old_ie;
1799 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1800 struct ieee80211_sub_if_data, u.mesh);
1801
1802 /* allocate information elements */
1803 new_ie = NULL;
1804 old_ie = ifmsh->ie;
1805
1806 if (setup->ie_len) {
1807 new_ie = kmemdup(setup->ie, setup->ie_len,
1808 GFP_KERNEL);
1809 if (!new_ie)
1810 return -ENOMEM;
1811 }
1812 ifmsh->ie_len = setup->ie_len;
1813 ifmsh->ie = new_ie;
1814 kfree(old_ie);
1815
1816 /* now copy the rest of the setup parameters */
1817 ifmsh->mesh_id_len = setup->mesh_id_len;
1818 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1819 ifmsh->mesh_sp_id = setup->sync_method;
1820 ifmsh->mesh_pp_id = setup->path_sel_proto;
1821 ifmsh->mesh_pm_id = setup->path_metric;
1822 ifmsh->user_mpm = setup->user_mpm;
1823 ifmsh->mesh_auth_id = setup->auth_id;
1824 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1825 if (setup->is_authenticated)
1826 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1827 if (setup->is_secure)
1828 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1829
1830 /* mcast rate setting in Mesh Node */
1831 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1832 sizeof(setup->mcast_rate));
1833 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1834
1835 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1836 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1837
1838 return 0;
1839 }
1840
1841 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1842 struct net_device *dev, u32 mask,
1843 const struct mesh_config *nconf)
1844 {
1845 struct mesh_config *conf;
1846 struct ieee80211_sub_if_data *sdata;
1847 struct ieee80211_if_mesh *ifmsh;
1848
1849 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1850 ifmsh = &sdata->u.mesh;
1851
1852 /* Set the config options which we are interested in setting */
1853 conf = &(sdata->u.mesh.mshcfg);
1854 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1855 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1856 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1857 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1858 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1859 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1860 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1861 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1862 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1863 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1864 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1865 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1866 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1867 conf->element_ttl = nconf->element_ttl;
1868 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1869 if (ifmsh->user_mpm)
1870 return -EBUSY;
1871 conf->auto_open_plinks = nconf->auto_open_plinks;
1872 }
1873 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1874 conf->dot11MeshNbrOffsetMaxNeighbor =
1875 nconf->dot11MeshNbrOffsetMaxNeighbor;
1876 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1877 conf->dot11MeshHWMPmaxPREQretries =
1878 nconf->dot11MeshHWMPmaxPREQretries;
1879 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1880 conf->path_refresh_time = nconf->path_refresh_time;
1881 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1882 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1883 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1884 conf->dot11MeshHWMPactivePathTimeout =
1885 nconf->dot11MeshHWMPactivePathTimeout;
1886 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1887 conf->dot11MeshHWMPpreqMinInterval =
1888 nconf->dot11MeshHWMPpreqMinInterval;
1889 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1890 conf->dot11MeshHWMPperrMinInterval =
1891 nconf->dot11MeshHWMPperrMinInterval;
1892 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1893 mask))
1894 conf->dot11MeshHWMPnetDiameterTraversalTime =
1895 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1896 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1897 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1898 ieee80211_mesh_root_setup(ifmsh);
1899 }
1900 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1901 /* our current gate announcement implementation rides on root
1902 * announcements, so require this ifmsh to also be a root node
1903 * */
1904 if (nconf->dot11MeshGateAnnouncementProtocol &&
1905 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1906 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1907 ieee80211_mesh_root_setup(ifmsh);
1908 }
1909 conf->dot11MeshGateAnnouncementProtocol =
1910 nconf->dot11MeshGateAnnouncementProtocol;
1911 }
1912 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1913 conf->dot11MeshHWMPRannInterval =
1914 nconf->dot11MeshHWMPRannInterval;
1915 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1916 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1917 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1918 /* our RSSI threshold implementation is supported only for
1919 * devices that report signal in dBm.
1920 */
1921 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1922 return -ENOTSUPP;
1923 conf->rssi_threshold = nconf->rssi_threshold;
1924 }
1925 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1926 conf->ht_opmode = nconf->ht_opmode;
1927 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1928 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1929 }
1930 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1931 conf->dot11MeshHWMPactivePathToRootTimeout =
1932 nconf->dot11MeshHWMPactivePathToRootTimeout;
1933 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1934 conf->dot11MeshHWMProotInterval =
1935 nconf->dot11MeshHWMProotInterval;
1936 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1937 conf->dot11MeshHWMPconfirmationInterval =
1938 nconf->dot11MeshHWMPconfirmationInterval;
1939 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1940 conf->power_mode = nconf->power_mode;
1941 ieee80211_mps_local_status_update(sdata);
1942 }
1943 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1944 conf->dot11MeshAwakeWindowDuration =
1945 nconf->dot11MeshAwakeWindowDuration;
1946 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1947 conf->plink_timeout = nconf->plink_timeout;
1948 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1949 return 0;
1950 }
1951
1952 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1953 const struct mesh_config *conf,
1954 const struct mesh_setup *setup)
1955 {
1956 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1957 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1958 int err;
1959
1960 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1961 err = copy_mesh_setup(ifmsh, setup);
1962 if (err)
1963 return err;
1964
1965 /* can mesh use other SMPS modes? */
1966 sdata->smps_mode = IEEE80211_SMPS_OFF;
1967 sdata->needed_rx_chains = sdata->local->rx_chains;
1968
1969 mutex_lock(&sdata->local->mtx);
1970 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1971 IEEE80211_CHANCTX_SHARED);
1972 mutex_unlock(&sdata->local->mtx);
1973 if (err)
1974 return err;
1975
1976 return ieee80211_start_mesh(sdata);
1977 }
1978
1979 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1980 {
1981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982
1983 ieee80211_stop_mesh(sdata);
1984 mutex_lock(&sdata->local->mtx);
1985 ieee80211_vif_release_channel(sdata);
1986 mutex_unlock(&sdata->local->mtx);
1987
1988 return 0;
1989 }
1990 #endif
1991
1992 static int ieee80211_change_bss(struct wiphy *wiphy,
1993 struct net_device *dev,
1994 struct bss_parameters *params)
1995 {
1996 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1997 enum ieee80211_band band;
1998 u32 changed = 0;
1999
2000 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2001 return -ENOENT;
2002
2003 band = ieee80211_get_sdata_band(sdata);
2004
2005 if (params->use_cts_prot >= 0) {
2006 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2007 changed |= BSS_CHANGED_ERP_CTS_PROT;
2008 }
2009 if (params->use_short_preamble >= 0) {
2010 sdata->vif.bss_conf.use_short_preamble =
2011 params->use_short_preamble;
2012 changed |= BSS_CHANGED_ERP_PREAMBLE;
2013 }
2014
2015 if (!sdata->vif.bss_conf.use_short_slot &&
2016 band == IEEE80211_BAND_5GHZ) {
2017 sdata->vif.bss_conf.use_short_slot = true;
2018 changed |= BSS_CHANGED_ERP_SLOT;
2019 }
2020
2021 if (params->use_short_slot_time >= 0) {
2022 sdata->vif.bss_conf.use_short_slot =
2023 params->use_short_slot_time;
2024 changed |= BSS_CHANGED_ERP_SLOT;
2025 }
2026
2027 if (params->basic_rates) {
2028 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2029 wiphy->bands[band],
2030 params->basic_rates,
2031 params->basic_rates_len,
2032 &sdata->vif.bss_conf.basic_rates);
2033 changed |= BSS_CHANGED_BASIC_RATES;
2034 }
2035
2036 if (params->ap_isolate >= 0) {
2037 if (params->ap_isolate)
2038 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2039 else
2040 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2041 }
2042
2043 if (params->ht_opmode >= 0) {
2044 sdata->vif.bss_conf.ht_operation_mode =
2045 (u16) params->ht_opmode;
2046 changed |= BSS_CHANGED_HT;
2047 }
2048
2049 if (params->p2p_ctwindow >= 0) {
2050 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2051 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2052 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2053 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2054 changed |= BSS_CHANGED_P2P_PS;
2055 }
2056
2057 if (params->p2p_opp_ps > 0) {
2058 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2059 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2060 changed |= BSS_CHANGED_P2P_PS;
2061 } else if (params->p2p_opp_ps == 0) {
2062 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2063 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2064 changed |= BSS_CHANGED_P2P_PS;
2065 }
2066
2067 ieee80211_bss_info_change_notify(sdata, changed);
2068
2069 return 0;
2070 }
2071
2072 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2073 struct net_device *dev,
2074 struct ieee80211_txq_params *params)
2075 {
2076 struct ieee80211_local *local = wiphy_priv(wiphy);
2077 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2078 struct ieee80211_tx_queue_params p;
2079
2080 if (!local->ops->conf_tx)
2081 return -EOPNOTSUPP;
2082
2083 if (local->hw.queues < IEEE80211_NUM_ACS)
2084 return -EOPNOTSUPP;
2085
2086 memset(&p, 0, sizeof(p));
2087 p.aifs = params->aifs;
2088 p.cw_max = params->cwmax;
2089 p.cw_min = params->cwmin;
2090 p.txop = params->txop;
2091
2092 /*
2093 * Setting tx queue params disables u-apsd because it's only
2094 * called in master mode.
2095 */
2096 p.uapsd = false;
2097
2098 sdata->tx_conf[params->ac] = p;
2099 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2100 wiphy_debug(local->hw.wiphy,
2101 "failed to set TX queue parameters for AC %d\n",
2102 params->ac);
2103 return -EINVAL;
2104 }
2105
2106 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2107
2108 return 0;
2109 }
2110
2111 #ifdef CONFIG_PM
2112 static int ieee80211_suspend(struct wiphy *wiphy,
2113 struct cfg80211_wowlan *wowlan)
2114 {
2115 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2116 }
2117
2118 static int ieee80211_resume(struct wiphy *wiphy)
2119 {
2120 return __ieee80211_resume(wiphy_priv(wiphy));
2121 }
2122 #else
2123 #define ieee80211_suspend NULL
2124 #define ieee80211_resume NULL
2125 #endif
2126
2127 static int ieee80211_scan(struct wiphy *wiphy,
2128 struct cfg80211_scan_request *req)
2129 {
2130 struct ieee80211_sub_if_data *sdata;
2131
2132 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2133
2134 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2135 case NL80211_IFTYPE_STATION:
2136 case NL80211_IFTYPE_ADHOC:
2137 case NL80211_IFTYPE_MESH_POINT:
2138 case NL80211_IFTYPE_P2P_CLIENT:
2139 case NL80211_IFTYPE_P2P_DEVICE:
2140 break;
2141 case NL80211_IFTYPE_P2P_GO:
2142 if (sdata->local->ops->hw_scan)
2143 break;
2144 /*
2145 * FIXME: implement NoA while scanning in software,
2146 * for now fall through to allow scanning only when
2147 * beaconing hasn't been configured yet
2148 */
2149 case NL80211_IFTYPE_AP:
2150 /*
2151 * If the scan has been forced (and the driver supports
2152 * forcing), don't care about being beaconing already.
2153 * This will create problems to the attached stations (e.g. all
2154 * the frames sent while scanning on other channel will be
2155 * lost)
2156 */
2157 if (sdata->u.ap.beacon &&
2158 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2159 !(req->flags & NL80211_SCAN_FLAG_AP)))
2160 return -EOPNOTSUPP;
2161 break;
2162 default:
2163 return -EOPNOTSUPP;
2164 }
2165
2166 return ieee80211_request_scan(sdata, req);
2167 }
2168
2169 static int
2170 ieee80211_sched_scan_start(struct wiphy *wiphy,
2171 struct net_device *dev,
2172 struct cfg80211_sched_scan_request *req)
2173 {
2174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2175
2176 if (!sdata->local->ops->sched_scan_start)
2177 return -EOPNOTSUPP;
2178
2179 return ieee80211_request_sched_scan_start(sdata, req);
2180 }
2181
2182 static int
2183 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2184 {
2185 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2186
2187 if (!sdata->local->ops->sched_scan_stop)
2188 return -EOPNOTSUPP;
2189
2190 return ieee80211_request_sched_scan_stop(sdata);
2191 }
2192
2193 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2194 struct cfg80211_auth_request *req)
2195 {
2196 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2197 }
2198
2199 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2200 struct cfg80211_assoc_request *req)
2201 {
2202 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2203 }
2204
2205 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2206 struct cfg80211_deauth_request *req)
2207 {
2208 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2209 }
2210
2211 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2212 struct cfg80211_disassoc_request *req)
2213 {
2214 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2215 }
2216
2217 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2218 struct cfg80211_ibss_params *params)
2219 {
2220 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2221 }
2222
2223 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2224 {
2225 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2226 }
2227
2228 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2229 int rate[IEEE80211_NUM_BANDS])
2230 {
2231 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2232
2233 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2234 sizeof(int) * IEEE80211_NUM_BANDS);
2235
2236 return 0;
2237 }
2238
2239 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2240 {
2241 struct ieee80211_local *local = wiphy_priv(wiphy);
2242 int err;
2243
2244 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2245 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2246
2247 if (err)
2248 return err;
2249 }
2250
2251 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2252 err = drv_set_coverage_class(local, wiphy->coverage_class);
2253
2254 if (err)
2255 return err;
2256 }
2257
2258 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2259 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2260
2261 if (err)
2262 return err;
2263 }
2264
2265 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2266 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2267 return -EINVAL;
2268 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2269 }
2270 if (changed & WIPHY_PARAM_RETRY_LONG) {
2271 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2272 return -EINVAL;
2273 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2274 }
2275 if (changed &
2276 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2277 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2278
2279 return 0;
2280 }
2281
2282 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2283 struct wireless_dev *wdev,
2284 enum nl80211_tx_power_setting type, int mbm)
2285 {
2286 struct ieee80211_local *local = wiphy_priv(wiphy);
2287 struct ieee80211_sub_if_data *sdata;
2288
2289 if (wdev) {
2290 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2291
2292 switch (type) {
2293 case NL80211_TX_POWER_AUTOMATIC:
2294 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2295 break;
2296 case NL80211_TX_POWER_LIMITED:
2297 case NL80211_TX_POWER_FIXED:
2298 if (mbm < 0 || (mbm % 100))
2299 return -EOPNOTSUPP;
2300 sdata->user_power_level = MBM_TO_DBM(mbm);
2301 break;
2302 }
2303
2304 ieee80211_recalc_txpower(sdata);
2305
2306 return 0;
2307 }
2308
2309 switch (type) {
2310 case NL80211_TX_POWER_AUTOMATIC:
2311 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2312 break;
2313 case NL80211_TX_POWER_LIMITED:
2314 case NL80211_TX_POWER_FIXED:
2315 if (mbm < 0 || (mbm % 100))
2316 return -EOPNOTSUPP;
2317 local->user_power_level = MBM_TO_DBM(mbm);
2318 break;
2319 }
2320
2321 mutex_lock(&local->iflist_mtx);
2322 list_for_each_entry(sdata, &local->interfaces, list)
2323 sdata->user_power_level = local->user_power_level;
2324 list_for_each_entry(sdata, &local->interfaces, list)
2325 ieee80211_recalc_txpower(sdata);
2326 mutex_unlock(&local->iflist_mtx);
2327
2328 return 0;
2329 }
2330
2331 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2332 struct wireless_dev *wdev,
2333 int *dbm)
2334 {
2335 struct ieee80211_local *local = wiphy_priv(wiphy);
2336 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2337
2338 if (!local->use_chanctx)
2339 *dbm = local->hw.conf.power_level;
2340 else
2341 *dbm = sdata->vif.bss_conf.txpower;
2342
2343 return 0;
2344 }
2345
2346 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2347 const u8 *addr)
2348 {
2349 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2350
2351 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2352
2353 return 0;
2354 }
2355
2356 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2357 {
2358 struct ieee80211_local *local = wiphy_priv(wiphy);
2359
2360 drv_rfkill_poll(local);
2361 }
2362
2363 #ifdef CONFIG_NL80211_TESTMODE
2364 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2365 struct wireless_dev *wdev,
2366 void *data, int len)
2367 {
2368 struct ieee80211_local *local = wiphy_priv(wiphy);
2369 struct ieee80211_vif *vif = NULL;
2370
2371 if (!local->ops->testmode_cmd)
2372 return -EOPNOTSUPP;
2373
2374 if (wdev) {
2375 struct ieee80211_sub_if_data *sdata;
2376
2377 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2378 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2379 vif = &sdata->vif;
2380 }
2381
2382 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2383 }
2384
2385 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2386 struct sk_buff *skb,
2387 struct netlink_callback *cb,
2388 void *data, int len)
2389 {
2390 struct ieee80211_local *local = wiphy_priv(wiphy);
2391
2392 if (!local->ops->testmode_dump)
2393 return -EOPNOTSUPP;
2394
2395 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2396 }
2397 #endif
2398
2399 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2400 enum ieee80211_smps_mode smps_mode)
2401 {
2402 struct sta_info *sta;
2403 enum ieee80211_smps_mode old_req;
2404 int i;
2405
2406 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2407 return -EINVAL;
2408
2409 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2410 return 0;
2411
2412 old_req = sdata->u.ap.req_smps;
2413 sdata->u.ap.req_smps = smps_mode;
2414
2415 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2416 if (old_req == smps_mode ||
2417 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2418 return 0;
2419
2420 /* If no associated stations, there's no need to do anything */
2421 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2422 sdata->smps_mode = smps_mode;
2423 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2424 return 0;
2425 }
2426
2427 ht_dbg(sdata,
2428 "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2429 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2430
2431 mutex_lock(&sdata->local->sta_mtx);
2432 for (i = 0; i < STA_HASH_SIZE; i++) {
2433 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2434 lockdep_is_held(&sdata->local->sta_mtx));
2435 sta;
2436 sta = rcu_dereference_protected(sta->hnext,
2437 lockdep_is_held(&sdata->local->sta_mtx))) {
2438 /*
2439 * Only stations associated to our AP and
2440 * associated VLANs
2441 */
2442 if (sta->sdata->bss != &sdata->u.ap)
2443 continue;
2444
2445 /* This station doesn't support MIMO - skip it */
2446 if (sta_info_tx_streams(sta) == 1)
2447 continue;
2448
2449 /*
2450 * Don't wake up a STA just to send the action frame
2451 * unless we are getting more restrictive.
2452 */
2453 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2454 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2455 smps_mode)) {
2456 ht_dbg(sdata,
2457 "Won't send SMPS to sleeping STA %pM\n",
2458 sta->sta.addr);
2459 continue;
2460 }
2461
2462 /*
2463 * If the STA is not authorized, wait until it gets
2464 * authorized and the action frame will be sent then.
2465 */
2466 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2467 continue;
2468
2469 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2470 ieee80211_send_smps_action(sdata, smps_mode,
2471 sta->sta.addr,
2472 sdata->vif.bss_conf.bssid);
2473 }
2474 }
2475 mutex_unlock(&sdata->local->sta_mtx);
2476
2477 sdata->smps_mode = smps_mode;
2478 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2479
2480 return 0;
2481 }
2482
2483 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2484 enum ieee80211_smps_mode smps_mode)
2485 {
2486 const u8 *ap;
2487 enum ieee80211_smps_mode old_req;
2488 int err;
2489
2490 lockdep_assert_held(&sdata->wdev.mtx);
2491
2492 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2493 return -EINVAL;
2494
2495 old_req = sdata->u.mgd.req_smps;
2496 sdata->u.mgd.req_smps = smps_mode;
2497
2498 if (old_req == smps_mode &&
2499 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2500 return 0;
2501
2502 /*
2503 * If not associated, or current association is not an HT
2504 * association, there's no need to do anything, just store
2505 * the new value until we associate.
2506 */
2507 if (!sdata->u.mgd.associated ||
2508 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2509 return 0;
2510
2511 ap = sdata->u.mgd.associated->bssid;
2512
2513 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2514 if (sdata->u.mgd.powersave)
2515 smps_mode = IEEE80211_SMPS_DYNAMIC;
2516 else
2517 smps_mode = IEEE80211_SMPS_OFF;
2518 }
2519
2520 /* send SM PS frame to AP */
2521 err = ieee80211_send_smps_action(sdata, smps_mode,
2522 ap, ap);
2523 if (err)
2524 sdata->u.mgd.req_smps = old_req;
2525
2526 return err;
2527 }
2528
2529 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2530 bool enabled, int timeout)
2531 {
2532 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2533 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2534
2535 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2536 return -EOPNOTSUPP;
2537
2538 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2539 return -EOPNOTSUPP;
2540
2541 if (enabled == sdata->u.mgd.powersave &&
2542 timeout == local->dynamic_ps_forced_timeout)
2543 return 0;
2544
2545 sdata->u.mgd.powersave = enabled;
2546 local->dynamic_ps_forced_timeout = timeout;
2547
2548 /* no change, but if automatic follow powersave */
2549 sdata_lock(sdata);
2550 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2551 sdata_unlock(sdata);
2552
2553 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2554 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2555
2556 ieee80211_recalc_ps(local, -1);
2557 ieee80211_recalc_ps_vif(sdata);
2558
2559 return 0;
2560 }
2561
2562 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2563 struct net_device *dev,
2564 s32 rssi_thold, u32 rssi_hyst)
2565 {
2566 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2567 struct ieee80211_vif *vif = &sdata->vif;
2568 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2569
2570 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2571 rssi_hyst == bss_conf->cqm_rssi_hyst)
2572 return 0;
2573
2574 bss_conf->cqm_rssi_thold = rssi_thold;
2575 bss_conf->cqm_rssi_hyst = rssi_hyst;
2576
2577 /* tell the driver upon association, unless already associated */
2578 if (sdata->u.mgd.associated &&
2579 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2580 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2581
2582 return 0;
2583 }
2584
2585 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2586 struct net_device *dev,
2587 const u8 *addr,
2588 const struct cfg80211_bitrate_mask *mask)
2589 {
2590 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2591 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2592 int i, ret;
2593
2594 if (!ieee80211_sdata_running(sdata))
2595 return -ENETDOWN;
2596
2597 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2598 ret = drv_set_bitrate_mask(local, sdata, mask);
2599 if (ret)
2600 return ret;
2601 }
2602
2603 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2604 struct ieee80211_supported_band *sband = wiphy->bands[i];
2605 int j;
2606
2607 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2608 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2609 sizeof(mask->control[i].ht_mcs));
2610
2611 sdata->rc_has_mcs_mask[i] = false;
2612 if (!sband)
2613 continue;
2614
2615 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2616 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2617 sdata->rc_has_mcs_mask[i] = true;
2618 break;
2619 }
2620 }
2621
2622 return 0;
2623 }
2624
2625 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2626 struct ieee80211_sub_if_data *sdata,
2627 struct ieee80211_channel *channel,
2628 unsigned int duration, u64 *cookie,
2629 struct sk_buff *txskb,
2630 enum ieee80211_roc_type type)
2631 {
2632 struct ieee80211_roc_work *roc, *tmp;
2633 bool queued = false;
2634 int ret;
2635
2636 lockdep_assert_held(&local->mtx);
2637
2638 if (local->use_chanctx && !local->ops->remain_on_channel)
2639 return -EOPNOTSUPP;
2640
2641 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2642 if (!roc)
2643 return -ENOMEM;
2644
2645 /*
2646 * If the duration is zero, then the driver
2647 * wouldn't actually do anything. Set it to
2648 * 10 for now.
2649 *
2650 * TODO: cancel the off-channel operation
2651 * when we get the SKB's TX status and
2652 * the wait time was zero before.
2653 */
2654 if (!duration)
2655 duration = 10;
2656
2657 roc->chan = channel;
2658 roc->duration = duration;
2659 roc->req_duration = duration;
2660 roc->frame = txskb;
2661 roc->type = type;
2662 roc->mgmt_tx_cookie = (unsigned long)txskb;
2663 roc->sdata = sdata;
2664 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2665 INIT_LIST_HEAD(&roc->dependents);
2666
2667 /*
2668 * cookie is either the roc cookie (for normal roc)
2669 * or the SKB (for mgmt TX)
2670 */
2671 if (!txskb) {
2672 /* local->mtx protects this */
2673 local->roc_cookie_counter++;
2674 roc->cookie = local->roc_cookie_counter;
2675 /* wow, you wrapped 64 bits ... more likely a bug */
2676 if (WARN_ON(roc->cookie == 0)) {
2677 roc->cookie = 1;
2678 local->roc_cookie_counter++;
2679 }
2680 *cookie = roc->cookie;
2681 } else {
2682 *cookie = (unsigned long)txskb;
2683 }
2684
2685 /* if there's one pending or we're scanning, queue this one */
2686 if (!list_empty(&local->roc_list) ||
2687 local->scanning || local->radar_detect_enabled)
2688 goto out_check_combine;
2689
2690 /* if not HW assist, just queue & schedule work */
2691 if (!local->ops->remain_on_channel) {
2692 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2693 goto out_queue;
2694 }
2695
2696 /* otherwise actually kick it off here (for error handling) */
2697
2698 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2699 if (ret) {
2700 kfree(roc);
2701 return ret;
2702 }
2703
2704 roc->started = true;
2705 goto out_queue;
2706
2707 out_check_combine:
2708 list_for_each_entry(tmp, &local->roc_list, list) {
2709 if (tmp->chan != channel || tmp->sdata != sdata)
2710 continue;
2711
2712 /*
2713 * Extend this ROC if possible:
2714 *
2715 * If it hasn't started yet, just increase the duration
2716 * and add the new one to the list of dependents.
2717 * If the type of the new ROC has higher priority, modify the
2718 * type of the previous one to match that of the new one.
2719 */
2720 if (!tmp->started) {
2721 list_add_tail(&roc->list, &tmp->dependents);
2722 tmp->duration = max(tmp->duration, roc->duration);
2723 tmp->type = max(tmp->type, roc->type);
2724 queued = true;
2725 break;
2726 }
2727
2728 /* If it has already started, it's more difficult ... */
2729 if (local->ops->remain_on_channel) {
2730 unsigned long j = jiffies;
2731
2732 /*
2733 * In the offloaded ROC case, if it hasn't begun, add
2734 * this new one to the dependent list to be handled
2735 * when the master one begins. If it has begun,
2736 * check that there's still a minimum time left and
2737 * if so, start this one, transmitting the frame, but
2738 * add it to the list directly after this one with
2739 * a reduced time so we'll ask the driver to execute
2740 * it right after finishing the previous one, in the
2741 * hope that it'll also be executed right afterwards,
2742 * effectively extending the old one.
2743 * If there's no minimum time left, just add it to the
2744 * normal list.
2745 * TODO: the ROC type is ignored here, assuming that it
2746 * is better to immediately use the current ROC.
2747 */
2748 if (!tmp->hw_begun) {
2749 list_add_tail(&roc->list, &tmp->dependents);
2750 queued = true;
2751 break;
2752 }
2753
2754 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2755 tmp->hw_start_time +
2756 msecs_to_jiffies(tmp->duration))) {
2757 int new_dur;
2758
2759 ieee80211_handle_roc_started(roc);
2760
2761 new_dur = roc->duration -
2762 jiffies_to_msecs(tmp->hw_start_time +
2763 msecs_to_jiffies(
2764 tmp->duration) -
2765 j);
2766
2767 if (new_dur > 0) {
2768 /* add right after tmp */
2769 list_add(&roc->list, &tmp->list);
2770 } else {
2771 list_add_tail(&roc->list,
2772 &tmp->dependents);
2773 }
2774 queued = true;
2775 }
2776 } else if (del_timer_sync(&tmp->work.timer)) {
2777 unsigned long new_end;
2778
2779 /*
2780 * In the software ROC case, cancel the timer, if
2781 * that fails then the finish work is already
2782 * queued/pending and thus we queue the new ROC
2783 * normally, if that succeeds then we can extend
2784 * the timer duration and TX the frame (if any.)
2785 */
2786
2787 list_add_tail(&roc->list, &tmp->dependents);
2788 queued = true;
2789
2790 new_end = jiffies + msecs_to_jiffies(roc->duration);
2791
2792 /* ok, it was started & we canceled timer */
2793 if (time_after(new_end, tmp->work.timer.expires))
2794 mod_timer(&tmp->work.timer, new_end);
2795 else
2796 add_timer(&tmp->work.timer);
2797
2798 ieee80211_handle_roc_started(roc);
2799 }
2800 break;
2801 }
2802
2803 out_queue:
2804 if (!queued)
2805 list_add_tail(&roc->list, &local->roc_list);
2806
2807 return 0;
2808 }
2809
2810 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2811 struct wireless_dev *wdev,
2812 struct ieee80211_channel *chan,
2813 unsigned int duration,
2814 u64 *cookie)
2815 {
2816 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2817 struct ieee80211_local *local = sdata->local;
2818 int ret;
2819
2820 mutex_lock(&local->mtx);
2821 ret = ieee80211_start_roc_work(local, sdata, chan,
2822 duration, cookie, NULL,
2823 IEEE80211_ROC_TYPE_NORMAL);
2824 mutex_unlock(&local->mtx);
2825
2826 return ret;
2827 }
2828
2829 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2830 u64 cookie, bool mgmt_tx)
2831 {
2832 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2833 int ret;
2834
2835 mutex_lock(&local->mtx);
2836 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2837 struct ieee80211_roc_work *dep, *tmp2;
2838
2839 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2840 if (!mgmt_tx && dep->cookie != cookie)
2841 continue;
2842 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2843 continue;
2844 /* found dependent item -- just remove it */
2845 list_del(&dep->list);
2846 mutex_unlock(&local->mtx);
2847
2848 ieee80211_roc_notify_destroy(dep, true);
2849 return 0;
2850 }
2851
2852 if (!mgmt_tx && roc->cookie != cookie)
2853 continue;
2854 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2855 continue;
2856
2857 found = roc;
2858 break;
2859 }
2860
2861 if (!found) {
2862 mutex_unlock(&local->mtx);
2863 return -ENOENT;
2864 }
2865
2866 /*
2867 * We found the item to cancel, so do that. Note that it
2868 * may have dependents, which we also cancel (and send
2869 * the expired signal for.) Not doing so would be quite
2870 * tricky here, but we may need to fix it later.
2871 */
2872
2873 if (local->ops->remain_on_channel) {
2874 if (found->started) {
2875 ret = drv_cancel_remain_on_channel(local);
2876 if (WARN_ON_ONCE(ret)) {
2877 mutex_unlock(&local->mtx);
2878 return ret;
2879 }
2880 }
2881
2882 list_del(&found->list);
2883
2884 if (found->started)
2885 ieee80211_start_next_roc(local);
2886 mutex_unlock(&local->mtx);
2887
2888 ieee80211_roc_notify_destroy(found, true);
2889 } else {
2890 /* work may be pending so use it all the time */
2891 found->abort = true;
2892 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2893
2894 mutex_unlock(&local->mtx);
2895
2896 /* work will clean up etc */
2897 flush_delayed_work(&found->work);
2898 WARN_ON(!found->to_be_freed);
2899 kfree(found);
2900 }
2901
2902 return 0;
2903 }
2904
2905 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2906 struct wireless_dev *wdev,
2907 u64 cookie)
2908 {
2909 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2910 struct ieee80211_local *local = sdata->local;
2911
2912 return ieee80211_cancel_roc(local, cookie, false);
2913 }
2914
2915 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2916 struct net_device *dev,
2917 struct cfg80211_chan_def *chandef,
2918 u32 cac_time_ms)
2919 {
2920 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2921 struct ieee80211_local *local = sdata->local;
2922 int err;
2923
2924 mutex_lock(&local->mtx);
2925 if (!list_empty(&local->roc_list) || local->scanning) {
2926 err = -EBUSY;
2927 goto out_unlock;
2928 }
2929
2930 /* whatever, but channel contexts should not complain about that one */
2931 sdata->smps_mode = IEEE80211_SMPS_OFF;
2932 sdata->needed_rx_chains = local->rx_chains;
2933 sdata->radar_required = true;
2934
2935 err = ieee80211_vif_use_channel(sdata, chandef,
2936 IEEE80211_CHANCTX_SHARED);
2937 if (err)
2938 goto out_unlock;
2939
2940 ieee80211_queue_delayed_work(&sdata->local->hw,
2941 &sdata->dfs_cac_timer_work,
2942 msecs_to_jiffies(cac_time_ms));
2943
2944 out_unlock:
2945 mutex_unlock(&local->mtx);
2946 return err;
2947 }
2948
2949 static struct cfg80211_beacon_data *
2950 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2951 {
2952 struct cfg80211_beacon_data *new_beacon;
2953 u8 *pos;
2954 int len;
2955
2956 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2957 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2958 beacon->probe_resp_len;
2959
2960 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2961 if (!new_beacon)
2962 return NULL;
2963
2964 pos = (u8 *)(new_beacon + 1);
2965 if (beacon->head_len) {
2966 new_beacon->head_len = beacon->head_len;
2967 new_beacon->head = pos;
2968 memcpy(pos, beacon->head, beacon->head_len);
2969 pos += beacon->head_len;
2970 }
2971 if (beacon->tail_len) {
2972 new_beacon->tail_len = beacon->tail_len;
2973 new_beacon->tail = pos;
2974 memcpy(pos, beacon->tail, beacon->tail_len);
2975 pos += beacon->tail_len;
2976 }
2977 if (beacon->beacon_ies_len) {
2978 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2979 new_beacon->beacon_ies = pos;
2980 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2981 pos += beacon->beacon_ies_len;
2982 }
2983 if (beacon->proberesp_ies_len) {
2984 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2985 new_beacon->proberesp_ies = pos;
2986 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2987 pos += beacon->proberesp_ies_len;
2988 }
2989 if (beacon->assocresp_ies_len) {
2990 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2991 new_beacon->assocresp_ies = pos;
2992 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2993 pos += beacon->assocresp_ies_len;
2994 }
2995 if (beacon->probe_resp_len) {
2996 new_beacon->probe_resp_len = beacon->probe_resp_len;
2997 beacon->probe_resp = pos;
2998 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2999 pos += beacon->probe_resp_len;
3000 }
3001
3002 return new_beacon;
3003 }
3004
3005 void ieee80211_csa_finish(struct ieee80211_vif *vif)
3006 {
3007 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3008
3009 ieee80211_queue_work(&sdata->local->hw,
3010 &sdata->csa_finalize_work);
3011 }
3012 EXPORT_SYMBOL(ieee80211_csa_finish);
3013
3014 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3015 {
3016 struct ieee80211_local *local = sdata->local;
3017 int err, changed = 0;
3018
3019 sdata_assert_lock(sdata);
3020
3021 mutex_lock(&local->mtx);
3022 sdata->radar_required = sdata->csa_radar_required;
3023 err = ieee80211_vif_change_channel(sdata, &changed);
3024 mutex_unlock(&local->mtx);
3025 if (WARN_ON(err < 0))
3026 return;
3027
3028 if (!local->use_chanctx) {
3029 local->_oper_chandef = sdata->csa_chandef;
3030 ieee80211_hw_config(local, 0);
3031 }
3032
3033 sdata->vif.csa_active = false;
3034 switch (sdata->vif.type) {
3035 case NL80211_IFTYPE_AP:
3036 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3037 kfree(sdata->u.ap.next_beacon);
3038 sdata->u.ap.next_beacon = NULL;
3039
3040 if (err < 0)
3041 return;
3042 changed |= err;
3043 break;
3044 case NL80211_IFTYPE_ADHOC:
3045 err = ieee80211_ibss_finish_csa(sdata);
3046 if (err < 0)
3047 return;
3048 changed |= err;
3049 break;
3050 #ifdef CONFIG_MAC80211_MESH
3051 case NL80211_IFTYPE_MESH_POINT:
3052 err = ieee80211_mesh_finish_csa(sdata);
3053 if (err < 0)
3054 return;
3055 changed |= err;
3056 break;
3057 #endif
3058 default:
3059 WARN_ON(1);
3060 return;
3061 }
3062
3063 ieee80211_bss_info_change_notify(sdata, changed);
3064
3065 ieee80211_wake_queues_by_reason(&sdata->local->hw,
3066 IEEE80211_MAX_QUEUE_MAP,
3067 IEEE80211_QUEUE_STOP_REASON_CSA);
3068
3069 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3070 }
3071
3072 void ieee80211_csa_finalize_work(struct work_struct *work)
3073 {
3074 struct ieee80211_sub_if_data *sdata =
3075 container_of(work, struct ieee80211_sub_if_data,
3076 csa_finalize_work);
3077
3078 sdata_lock(sdata);
3079 /* AP might have been stopped while waiting for the lock. */
3080 if (!sdata->vif.csa_active)
3081 goto unlock;
3082
3083 if (!ieee80211_sdata_running(sdata))
3084 goto unlock;
3085
3086 ieee80211_csa_finalize(sdata);
3087
3088 unlock:
3089 sdata_unlock(sdata);
3090 }
3091
3092 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3093 struct cfg80211_csa_settings *params)
3094 {
3095 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3096 struct ieee80211_local *local = sdata->local;
3097 struct ieee80211_chanctx_conf *chanctx_conf;
3098 struct ieee80211_chanctx *chanctx;
3099 struct ieee80211_if_mesh __maybe_unused *ifmsh;
3100 int err, num_chanctx, changed = 0;
3101
3102 sdata_assert_lock(sdata);
3103
3104 if (!list_empty(&local->roc_list) || local->scanning)
3105 return -EBUSY;
3106
3107 if (sdata->wdev.cac_started)
3108 return -EBUSY;
3109
3110 if (cfg80211_chandef_identical(&params->chandef,
3111 &sdata->vif.bss_conf.chandef))
3112 return -EINVAL;
3113
3114 rcu_read_lock();
3115 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3116 if (!chanctx_conf) {
3117 rcu_read_unlock();
3118 return -EBUSY;
3119 }
3120
3121 /* don't handle for multi-VIF cases */
3122 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3123 if (chanctx->refcount > 1) {
3124 rcu_read_unlock();
3125 return -EBUSY;
3126 }
3127 num_chanctx = 0;
3128 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3129 num_chanctx++;
3130 rcu_read_unlock();
3131
3132 if (num_chanctx > 1)
3133 return -EBUSY;
3134
3135 /* don't allow another channel switch if one is already active. */
3136 if (sdata->vif.csa_active)
3137 return -EBUSY;
3138
3139 switch (sdata->vif.type) {
3140 case NL80211_IFTYPE_AP:
3141 sdata->u.ap.next_beacon =
3142 cfg80211_beacon_dup(&params->beacon_after);
3143 if (!sdata->u.ap.next_beacon)
3144 return -ENOMEM;
3145
3146 /*
3147 * With a count of 0, we don't have to wait for any
3148 * TBTT before switching, so complete the CSA
3149 * immediately. In theory, with a count == 1 we
3150 * should delay the switch until just before the next
3151 * TBTT, but that would complicate things so we switch
3152 * immediately too. If we would delay the switch
3153 * until the next TBTT, we would have to set the probe
3154 * response here.
3155 *
3156 * TODO: A channel switch with count <= 1 without
3157 * sending a CSA action frame is kind of useless,
3158 * because the clients won't know we're changing
3159 * channels. The action frame must be implemented
3160 * either here or in the userspace.
3161 */
3162 if (params->count <= 1)
3163 break;
3164
3165 sdata->csa_counter_offset_beacon =
3166 params->counter_offset_beacon;
3167 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3168 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3169 if (err < 0) {
3170 kfree(sdata->u.ap.next_beacon);
3171 return err;
3172 }
3173 changed |= err;
3174
3175 break;
3176 case NL80211_IFTYPE_ADHOC:
3177 if (!sdata->vif.bss_conf.ibss_joined)
3178 return -EINVAL;
3179
3180 if (params->chandef.width != sdata->u.ibss.chandef.width)
3181 return -EINVAL;
3182
3183 switch (params->chandef.width) {
3184 case NL80211_CHAN_WIDTH_40:
3185 if (cfg80211_get_chandef_type(&params->chandef) !=
3186 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3187 return -EINVAL;
3188 case NL80211_CHAN_WIDTH_5:
3189 case NL80211_CHAN_WIDTH_10:
3190 case NL80211_CHAN_WIDTH_20_NOHT:
3191 case NL80211_CHAN_WIDTH_20:
3192 break;
3193 default:
3194 return -EINVAL;
3195 }
3196
3197 /* changes into another band are not supported */
3198 if (sdata->u.ibss.chandef.chan->band !=
3199 params->chandef.chan->band)
3200 return -EINVAL;
3201
3202 /* see comments in the NL80211_IFTYPE_AP block */
3203 if (params->count > 1) {
3204 err = ieee80211_ibss_csa_beacon(sdata, params);
3205 if (err < 0)
3206 return err;
3207 changed |= err;
3208 }
3209
3210 ieee80211_send_action_csa(sdata, params);
3211
3212 break;
3213 #ifdef CONFIG_MAC80211_MESH
3214 case NL80211_IFTYPE_MESH_POINT:
3215 ifmsh = &sdata->u.mesh;
3216
3217 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3218 return -EINVAL;
3219
3220 /* changes into another band are not supported */
3221 if (sdata->vif.bss_conf.chandef.chan->band !=
3222 params->chandef.chan->band)
3223 return -EINVAL;
3224
3225 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3226 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3227 if (!ifmsh->pre_value)
3228 ifmsh->pre_value = 1;
3229 else
3230 ifmsh->pre_value++;
3231 }
3232
3233 /* see comments in the NL80211_IFTYPE_AP block */
3234 if (params->count > 1) {
3235 err = ieee80211_mesh_csa_beacon(sdata, params);
3236 if (err < 0) {
3237 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3238 return err;
3239 }
3240 changed |= err;
3241 }
3242
3243 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3244 ieee80211_send_action_csa(sdata, params);
3245
3246 break;
3247 #endif
3248 default:
3249 return -EOPNOTSUPP;
3250 }
3251
3252 sdata->csa_radar_required = params->radar_required;
3253
3254 if (params->block_tx)
3255 ieee80211_stop_queues_by_reason(&local->hw,
3256 IEEE80211_MAX_QUEUE_MAP,
3257 IEEE80211_QUEUE_STOP_REASON_CSA);
3258
3259 sdata->csa_chandef = params->chandef;
3260 sdata->vif.csa_active = true;
3261
3262 if (changed) {
3263 ieee80211_bss_info_change_notify(sdata, changed);
3264 drv_channel_switch_beacon(sdata, &params->chandef);
3265 } else {
3266 /* if the beacon didn't change, we can finalize immediately */
3267 ieee80211_csa_finalize(sdata);
3268 }
3269
3270 return 0;
3271 }
3272
3273 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3274 struct cfg80211_mgmt_tx_params *params,
3275 u64 *cookie)
3276 {
3277 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3278 struct ieee80211_local *local = sdata->local;
3279 struct sk_buff *skb;
3280 struct sta_info *sta;
3281 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3282 bool need_offchan = false;
3283 u32 flags;
3284 int ret;
3285
3286 if (params->dont_wait_for_ack)
3287 flags = IEEE80211_TX_CTL_NO_ACK;
3288 else
3289 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3290 IEEE80211_TX_CTL_REQ_TX_STATUS;
3291
3292 if (params->no_cck)
3293 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3294
3295 switch (sdata->vif.type) {
3296 case NL80211_IFTYPE_ADHOC:
3297 if (!sdata->vif.bss_conf.ibss_joined)
3298 need_offchan = true;
3299 /* fall through */
3300 #ifdef CONFIG_MAC80211_MESH
3301 case NL80211_IFTYPE_MESH_POINT:
3302 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3303 !sdata->u.mesh.mesh_id_len)
3304 need_offchan = true;
3305 /* fall through */
3306 #endif
3307 case NL80211_IFTYPE_AP:
3308 case NL80211_IFTYPE_AP_VLAN:
3309 case NL80211_IFTYPE_P2P_GO:
3310 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3311 !ieee80211_vif_is_mesh(&sdata->vif) &&
3312 !rcu_access_pointer(sdata->bss->beacon))
3313 need_offchan = true;
3314 if (!ieee80211_is_action(mgmt->frame_control) ||
3315 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3316 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3317 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3318 break;
3319 rcu_read_lock();
3320 sta = sta_info_get(sdata, mgmt->da);
3321 rcu_read_unlock();
3322 if (!sta)
3323 return -ENOLINK;
3324 break;
3325 case NL80211_IFTYPE_STATION:
3326 case NL80211_IFTYPE_P2P_CLIENT:
3327 if (!sdata->u.mgd.associated)
3328 need_offchan = true;
3329 break;
3330 case NL80211_IFTYPE_P2P_DEVICE:
3331 need_offchan = true;
3332 break;
3333 default:
3334 return -EOPNOTSUPP;
3335 }
3336
3337 /* configurations requiring offchan cannot work if no channel has been
3338 * specified
3339 */
3340 if (need_offchan && !params->chan)
3341 return -EINVAL;
3342
3343 mutex_lock(&local->mtx);
3344
3345 /* Check if the operating channel is the requested channel */
3346 if (!need_offchan) {
3347 struct ieee80211_chanctx_conf *chanctx_conf;
3348
3349 rcu_read_lock();
3350 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3351
3352 if (chanctx_conf) {
3353 need_offchan = params->chan &&
3354 (params->chan !=
3355 chanctx_conf->def.chan);
3356 } else if (!params->chan) {
3357 ret = -EINVAL;
3358 rcu_read_unlock();
3359 goto out_unlock;
3360 } else {
3361 need_offchan = true;
3362 }
3363 rcu_read_unlock();
3364 }
3365
3366 if (need_offchan && !params->offchan) {
3367 ret = -EBUSY;
3368 goto out_unlock;
3369 }
3370
3371 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3372 if (!skb) {
3373 ret = -ENOMEM;
3374 goto out_unlock;
3375 }
3376 skb_reserve(skb, local->hw.extra_tx_headroom);
3377
3378 memcpy(skb_put(skb, params->len), params->buf, params->len);
3379
3380 IEEE80211_SKB_CB(skb)->flags = flags;
3381
3382 skb->dev = sdata->dev;
3383
3384 if (!need_offchan) {
3385 *cookie = (unsigned long) skb;
3386 ieee80211_tx_skb(sdata, skb);
3387 ret = 0;
3388 goto out_unlock;
3389 }
3390
3391 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3392 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3393 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3394 IEEE80211_SKB_CB(skb)->hw_queue =
3395 local->hw.offchannel_tx_hw_queue;
3396
3397 /* This will handle all kinds of coalescing and immediate TX */
3398 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3399 params->wait, cookie, skb,
3400 IEEE80211_ROC_TYPE_MGMT_TX);
3401 if (ret)
3402 kfree_skb(skb);
3403 out_unlock:
3404 mutex_unlock(&local->mtx);
3405 return ret;
3406 }
3407
3408 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3409 struct wireless_dev *wdev,
3410 u64 cookie)
3411 {
3412 struct ieee80211_local *local = wiphy_priv(wiphy);
3413
3414 return ieee80211_cancel_roc(local, cookie, true);
3415 }
3416
3417 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3418 struct wireless_dev *wdev,
3419 u16 frame_type, bool reg)
3420 {
3421 struct ieee80211_local *local = wiphy_priv(wiphy);
3422
3423 switch (frame_type) {
3424 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3425 if (reg)
3426 local->probe_req_reg++;
3427 else
3428 local->probe_req_reg--;
3429
3430 if (!local->open_count)
3431 break;
3432
3433 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3434 break;
3435 default:
3436 break;
3437 }
3438 }
3439
3440 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3441 {
3442 struct ieee80211_local *local = wiphy_priv(wiphy);
3443
3444 if (local->started)
3445 return -EOPNOTSUPP;
3446
3447 return drv_set_antenna(local, tx_ant, rx_ant);
3448 }
3449
3450 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3451 {
3452 struct ieee80211_local *local = wiphy_priv(wiphy);
3453
3454 return drv_get_antenna(local, tx_ant, rx_ant);
3455 }
3456
3457 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3458 {
3459 struct ieee80211_local *local = wiphy_priv(wiphy);
3460
3461 return drv_set_ringparam(local, tx, rx);
3462 }
3463
3464 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3465 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3466 {
3467 struct ieee80211_local *local = wiphy_priv(wiphy);
3468
3469 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3470 }
3471
3472 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3473 struct net_device *dev,
3474 struct cfg80211_gtk_rekey_data *data)
3475 {
3476 struct ieee80211_local *local = wiphy_priv(wiphy);
3477 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3478
3479 if (!local->ops->set_rekey_data)
3480 return -EOPNOTSUPP;
3481
3482 drv_set_rekey_data(local, sdata, data);
3483
3484 return 0;
3485 }
3486
3487 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3488 {
3489 u8 *pos = (void *)skb_put(skb, 7);
3490
3491 *pos++ = WLAN_EID_EXT_CAPABILITY;
3492 *pos++ = 5; /* len */
3493 *pos++ = 0x0;
3494 *pos++ = 0x0;
3495 *pos++ = 0x0;
3496 *pos++ = 0x0;
3497 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3498 }
3499
3500 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3501 {
3502 struct ieee80211_local *local = sdata->local;
3503 u16 capab;
3504
3505 capab = 0;
3506 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3507 return capab;
3508
3509 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3510 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3511 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3512 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3513
3514 return capab;
3515 }
3516
3517 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3518 u8 *peer, u8 *bssid)
3519 {
3520 struct ieee80211_tdls_lnkie *lnkid;
3521
3522 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3523
3524 lnkid->ie_type = WLAN_EID_LINK_ID;
3525 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3526
3527 memcpy(lnkid->bssid, bssid, ETH_ALEN);
3528 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3529 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3530 }
3531
3532 static int
3533 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3534 u8 *peer, u8 action_code, u8 dialog_token,
3535 u16 status_code, struct sk_buff *skb)
3536 {
3537 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3538 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3539 struct ieee80211_tdls_data *tf;
3540
3541 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3542
3543 memcpy(tf->da, peer, ETH_ALEN);
3544 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3545 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3546 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3547
3548 switch (action_code) {
3549 case WLAN_TDLS_SETUP_REQUEST:
3550 tf->category = WLAN_CATEGORY_TDLS;
3551 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3552
3553 skb_put(skb, sizeof(tf->u.setup_req));
3554 tf->u.setup_req.dialog_token = dialog_token;
3555 tf->u.setup_req.capability =
3556 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3557
3558 ieee80211_add_srates_ie(sdata, skb, false, band);
3559 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3560 ieee80211_tdls_add_ext_capab(skb);
3561 break;
3562 case WLAN_TDLS_SETUP_RESPONSE:
3563 tf->category = WLAN_CATEGORY_TDLS;
3564 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3565
3566 skb_put(skb, sizeof(tf->u.setup_resp));
3567 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3568 tf->u.setup_resp.dialog_token = dialog_token;
3569 tf->u.setup_resp.capability =
3570 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3571
3572 ieee80211_add_srates_ie(sdata, skb, false, band);
3573 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3574 ieee80211_tdls_add_ext_capab(skb);
3575 break;
3576 case WLAN_TDLS_SETUP_CONFIRM:
3577 tf->category = WLAN_CATEGORY_TDLS;
3578 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3579
3580 skb_put(skb, sizeof(tf->u.setup_cfm));
3581 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3582 tf->u.setup_cfm.dialog_token = dialog_token;
3583 break;
3584 case WLAN_TDLS_TEARDOWN:
3585 tf->category = WLAN_CATEGORY_TDLS;
3586 tf->action_code = WLAN_TDLS_TEARDOWN;
3587
3588 skb_put(skb, sizeof(tf->u.teardown));
3589 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3590 break;
3591 case WLAN_TDLS_DISCOVERY_REQUEST:
3592 tf->category = WLAN_CATEGORY_TDLS;
3593 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3594
3595 skb_put(skb, sizeof(tf->u.discover_req));
3596 tf->u.discover_req.dialog_token = dialog_token;
3597 break;
3598 default:
3599 return -EINVAL;
3600 }
3601
3602 return 0;
3603 }
3604
3605 static int
3606 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3607 u8 *peer, u8 action_code, u8 dialog_token,
3608 u16 status_code, struct sk_buff *skb)
3609 {
3610 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3611 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3612 struct ieee80211_mgmt *mgmt;
3613
3614 mgmt = (void *)skb_put(skb, 24);
3615 memset(mgmt, 0, 24);
3616 memcpy(mgmt->da, peer, ETH_ALEN);
3617 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3618 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3619
3620 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3621 IEEE80211_STYPE_ACTION);
3622
3623 switch (action_code) {
3624 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3625 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3626 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3627 mgmt->u.action.u.tdls_discover_resp.action_code =
3628 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3629 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3630 dialog_token;
3631 mgmt->u.action.u.tdls_discover_resp.capability =
3632 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3633
3634 ieee80211_add_srates_ie(sdata, skb, false, band);
3635 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3636 ieee80211_tdls_add_ext_capab(skb);
3637 break;
3638 default:
3639 return -EINVAL;
3640 }
3641
3642 return 0;
3643 }
3644
3645 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3646 u8 *peer, u8 action_code, u8 dialog_token,
3647 u16 status_code, u32 peer_capability,
3648 const u8 *extra_ies, size_t extra_ies_len)
3649 {
3650 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3651 struct ieee80211_local *local = sdata->local;
3652 struct sk_buff *skb = NULL;
3653 bool send_direct;
3654 int ret;
3655
3656 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3657 return -ENOTSUPP;
3658
3659 /* make sure we are in managed mode, and associated */
3660 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3661 !sdata->u.mgd.associated)
3662 return -EINVAL;
3663
3664 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3665 action_code, peer);
3666
3667 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3668 max(sizeof(struct ieee80211_mgmt),
3669 sizeof(struct ieee80211_tdls_data)) +
3670 50 + /* supported rates */
3671 7 + /* ext capab */
3672 extra_ies_len +
3673 sizeof(struct ieee80211_tdls_lnkie));
3674 if (!skb)
3675 return -ENOMEM;
3676
3677 skb_reserve(skb, local->hw.extra_tx_headroom);
3678
3679 switch (action_code) {
3680 case WLAN_TDLS_SETUP_REQUEST:
3681 case WLAN_TDLS_SETUP_RESPONSE:
3682 case WLAN_TDLS_SETUP_CONFIRM:
3683 case WLAN_TDLS_TEARDOWN:
3684 case WLAN_TDLS_DISCOVERY_REQUEST:
3685 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3686 action_code, dialog_token,
3687 status_code, skb);
3688 send_direct = false;
3689 break;
3690 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3691 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3692 dialog_token, status_code,
3693 skb);
3694 send_direct = true;
3695 break;
3696 default:
3697 ret = -ENOTSUPP;
3698 break;
3699 }
3700
3701 if (ret < 0)
3702 goto fail;
3703
3704 if (extra_ies_len)
3705 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3706
3707 /* the TDLS link IE is always added last */
3708 switch (action_code) {
3709 case WLAN_TDLS_SETUP_REQUEST:
3710 case WLAN_TDLS_SETUP_CONFIRM:
3711 case WLAN_TDLS_TEARDOWN:
3712 case WLAN_TDLS_DISCOVERY_REQUEST:
3713 /* we are the initiator */
3714 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3715 sdata->u.mgd.bssid);
3716 break;
3717 case WLAN_TDLS_SETUP_RESPONSE:
3718 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3719 /* we are the responder */
3720 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3721 sdata->u.mgd.bssid);
3722 break;
3723 default:
3724 ret = -ENOTSUPP;
3725 goto fail;
3726 }
3727
3728 if (send_direct) {
3729 ieee80211_tx_skb(sdata, skb);
3730 return 0;
3731 }
3732
3733 /*
3734 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3735 * we should default to AC_VI.
3736 */
3737 switch (action_code) {
3738 case WLAN_TDLS_SETUP_REQUEST:
3739 case WLAN_TDLS_SETUP_RESPONSE:
3740 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3741 skb->priority = 2;
3742 break;
3743 default:
3744 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3745 skb->priority = 5;
3746 break;
3747 }
3748
3749 /* disable bottom halves when entering the Tx path */
3750 local_bh_disable();
3751 ret = ieee80211_subif_start_xmit(skb, dev);
3752 local_bh_enable();
3753
3754 return ret;
3755
3756 fail:
3757 dev_kfree_skb(skb);
3758 return ret;
3759 }
3760
3761 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3762 u8 *peer, enum nl80211_tdls_operation oper)
3763 {
3764 struct sta_info *sta;
3765 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3766
3767 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3768 return -ENOTSUPP;
3769
3770 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3771 return -EINVAL;
3772
3773 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3774
3775 switch (oper) {
3776 case NL80211_TDLS_ENABLE_LINK:
3777 rcu_read_lock();
3778 sta = sta_info_get(sdata, peer);
3779 if (!sta) {
3780 rcu_read_unlock();
3781 return -ENOLINK;
3782 }
3783
3784 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3785 rcu_read_unlock();
3786 break;
3787 case NL80211_TDLS_DISABLE_LINK:
3788 return sta_info_destroy_addr(sdata, peer);
3789 case NL80211_TDLS_TEARDOWN:
3790 case NL80211_TDLS_SETUP:
3791 case NL80211_TDLS_DISCOVERY_REQ:
3792 /* We don't support in-driver setup/teardown/discovery */
3793 return -ENOTSUPP;
3794 default:
3795 return -ENOTSUPP;
3796 }
3797
3798 return 0;
3799 }
3800
3801 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3802 const u8 *peer, u64 *cookie)
3803 {
3804 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3805 struct ieee80211_local *local = sdata->local;
3806 struct ieee80211_qos_hdr *nullfunc;
3807 struct sk_buff *skb;
3808 int size = sizeof(*nullfunc);
3809 __le16 fc;
3810 bool qos;
3811 struct ieee80211_tx_info *info;
3812 struct sta_info *sta;
3813 struct ieee80211_chanctx_conf *chanctx_conf;
3814 enum ieee80211_band band;
3815
3816 rcu_read_lock();
3817 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3818 if (WARN_ON(!chanctx_conf)) {
3819 rcu_read_unlock();
3820 return -EINVAL;
3821 }
3822 band = chanctx_conf->def.chan->band;
3823 sta = sta_info_get_bss(sdata, peer);
3824 if (sta) {
3825 qos = test_sta_flag(sta, WLAN_STA_WME);
3826 } else {
3827 rcu_read_unlock();
3828 return -ENOLINK;
3829 }
3830
3831 if (qos) {
3832 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3833 IEEE80211_STYPE_QOS_NULLFUNC |
3834 IEEE80211_FCTL_FROMDS);
3835 } else {
3836 size -= 2;
3837 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3838 IEEE80211_STYPE_NULLFUNC |
3839 IEEE80211_FCTL_FROMDS);
3840 }
3841
3842 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3843 if (!skb) {
3844 rcu_read_unlock();
3845 return -ENOMEM;
3846 }
3847
3848 skb->dev = dev;
3849
3850 skb_reserve(skb, local->hw.extra_tx_headroom);
3851
3852 nullfunc = (void *) skb_put(skb, size);
3853 nullfunc->frame_control = fc;
3854 nullfunc->duration_id = 0;
3855 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3856 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3857 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3858 nullfunc->seq_ctrl = 0;
3859
3860 info = IEEE80211_SKB_CB(skb);
3861
3862 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3863 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3864
3865 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3866 skb->priority = 7;
3867 if (qos)
3868 nullfunc->qos_ctrl = cpu_to_le16(7);
3869
3870 local_bh_disable();
3871 ieee80211_xmit(sdata, skb, band);
3872 local_bh_enable();
3873 rcu_read_unlock();
3874
3875 *cookie = (unsigned long) skb;
3876 return 0;
3877 }
3878
3879 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3880 struct wireless_dev *wdev,
3881 struct cfg80211_chan_def *chandef)
3882 {
3883 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3884 struct ieee80211_local *local = wiphy_priv(wiphy);
3885 struct ieee80211_chanctx_conf *chanctx_conf;
3886 int ret = -ENODATA;
3887
3888 rcu_read_lock();
3889 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3890 if (chanctx_conf) {
3891 *chandef = chanctx_conf->def;
3892 ret = 0;
3893 } else if (local->open_count > 0 &&
3894 local->open_count == local->monitors &&
3895 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3896 if (local->use_chanctx)
3897 *chandef = local->monitor_chandef;
3898 else
3899 *chandef = local->_oper_chandef;
3900 ret = 0;
3901 }
3902 rcu_read_unlock();
3903
3904 return ret;
3905 }
3906
3907 #ifdef CONFIG_PM
3908 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3909 {
3910 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3911 }
3912 #endif
3913
3914 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3915 struct net_device *dev,
3916 struct cfg80211_qos_map *qos_map)
3917 {
3918 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3919 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3920
3921 if (qos_map) {
3922 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3923 if (!new_qos_map)
3924 return -ENOMEM;
3925 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3926 } else {
3927 /* A NULL qos_map was passed to disable QoS mapping */
3928 new_qos_map = NULL;
3929 }
3930
3931 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3932 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3933 if (old_qos_map)
3934 kfree_rcu(old_qos_map, rcu_head);
3935
3936 return 0;
3937 }
3938
3939 const struct cfg80211_ops mac80211_config_ops = {
3940 .add_virtual_intf = ieee80211_add_iface,
3941 .del_virtual_intf = ieee80211_del_iface,
3942 .change_virtual_intf = ieee80211_change_iface,
3943 .start_p2p_device = ieee80211_start_p2p_device,
3944 .stop_p2p_device = ieee80211_stop_p2p_device,
3945 .add_key = ieee80211_add_key,
3946 .del_key = ieee80211_del_key,
3947 .get_key = ieee80211_get_key,
3948 .set_default_key = ieee80211_config_default_key,
3949 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3950 .start_ap = ieee80211_start_ap,
3951 .change_beacon = ieee80211_change_beacon,
3952 .stop_ap = ieee80211_stop_ap,
3953 .add_station = ieee80211_add_station,
3954 .del_station = ieee80211_del_station,
3955 .change_station = ieee80211_change_station,
3956 .get_station = ieee80211_get_station,
3957 .dump_station = ieee80211_dump_station,
3958 .dump_survey = ieee80211_dump_survey,
3959 #ifdef CONFIG_MAC80211_MESH
3960 .add_mpath = ieee80211_add_mpath,
3961 .del_mpath = ieee80211_del_mpath,
3962 .change_mpath = ieee80211_change_mpath,
3963 .get_mpath = ieee80211_get_mpath,
3964 .dump_mpath = ieee80211_dump_mpath,
3965 .update_mesh_config = ieee80211_update_mesh_config,
3966 .get_mesh_config = ieee80211_get_mesh_config,
3967 .join_mesh = ieee80211_join_mesh,
3968 .leave_mesh = ieee80211_leave_mesh,
3969 #endif
3970 .change_bss = ieee80211_change_bss,
3971 .set_txq_params = ieee80211_set_txq_params,
3972 .set_monitor_channel = ieee80211_set_monitor_channel,
3973 .suspend = ieee80211_suspend,
3974 .resume = ieee80211_resume,
3975 .scan = ieee80211_scan,
3976 .sched_scan_start = ieee80211_sched_scan_start,
3977 .sched_scan_stop = ieee80211_sched_scan_stop,
3978 .auth = ieee80211_auth,
3979 .assoc = ieee80211_assoc,
3980 .deauth = ieee80211_deauth,
3981 .disassoc = ieee80211_disassoc,
3982 .join_ibss = ieee80211_join_ibss,
3983 .leave_ibss = ieee80211_leave_ibss,
3984 .set_mcast_rate = ieee80211_set_mcast_rate,
3985 .set_wiphy_params = ieee80211_set_wiphy_params,
3986 .set_tx_power = ieee80211_set_tx_power,
3987 .get_tx_power = ieee80211_get_tx_power,
3988 .set_wds_peer = ieee80211_set_wds_peer,
3989 .rfkill_poll = ieee80211_rfkill_poll,
3990 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3991 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3992 .set_power_mgmt = ieee80211_set_power_mgmt,
3993 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3994 .remain_on_channel = ieee80211_remain_on_channel,
3995 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3996 .mgmt_tx = ieee80211_mgmt_tx,
3997 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3998 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3999 .mgmt_frame_register = ieee80211_mgmt_frame_register,
4000 .set_antenna = ieee80211_set_antenna,
4001 .get_antenna = ieee80211_get_antenna,
4002 .set_ringparam = ieee80211_set_ringparam,
4003 .get_ringparam = ieee80211_get_ringparam,
4004 .set_rekey_data = ieee80211_set_rekey_data,
4005 .tdls_oper = ieee80211_tdls_oper,
4006 .tdls_mgmt = ieee80211_tdls_mgmt,
4007 .probe_client = ieee80211_probe_client,
4008 .set_noack_map = ieee80211_set_noack_map,
4009 #ifdef CONFIG_PM
4010 .set_wakeup = ieee80211_set_wakeup,
4011 #endif
4012 .get_et_sset_count = ieee80211_get_et_sset_count,
4013 .get_et_stats = ieee80211_get_et_stats,
4014 .get_et_strings = ieee80211_get_et_strings,
4015 .get_channel = ieee80211_cfg_get_channel,
4016 .start_radar_detection = ieee80211_start_radar_detection,
4017 .channel_switch = ieee80211_channel_switch,
4018 .set_qos_map = ieee80211_set_qos_map,
4019 };
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