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Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
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_flag & RX_FLAG_80MHZ)
455 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
456 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
457 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
458 if (sta->last_rx_rate_flag & RX_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 sdata->radar_required = params->radar_required;
974
975 mutex_lock(&local->mtx);
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 return err;
1026 changed |= err;
1027
1028 err = drv_start_ap(sdata->local, sdata);
1029 if (err) {
1030 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1031
1032 if (old)
1033 kfree_rcu(old, rcu_head);
1034 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1035 return err;
1036 }
1037
1038 ieee80211_recalc_dtim(local, sdata);
1039 ieee80211_bss_info_change_notify(sdata, changed);
1040
1041 netif_carrier_on(dev);
1042 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1043 netif_carrier_on(vlan->dev);
1044
1045 return 0;
1046 }
1047
1048 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1049 struct cfg80211_beacon_data *params)
1050 {
1051 struct ieee80211_sub_if_data *sdata;
1052 struct beacon_data *old;
1053 int err;
1054
1055 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1056
1057 /* don't allow changing the beacon while CSA is in place - offset
1058 * of channel switch counter may change
1059 */
1060 if (sdata->vif.csa_active)
1061 return -EBUSY;
1062
1063 old = sdata_dereference(sdata->u.ap.beacon, sdata);
1064 if (!old)
1065 return -ENOENT;
1066
1067 err = ieee80211_assign_beacon(sdata, params);
1068 if (err < 0)
1069 return err;
1070 ieee80211_bss_info_change_notify(sdata, err);
1071 return 0;
1072 }
1073
1074 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1075 {
1076 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1077 struct ieee80211_sub_if_data *vlan;
1078 struct ieee80211_local *local = sdata->local;
1079 struct beacon_data *old_beacon;
1080 struct probe_resp *old_probe_resp;
1081 struct cfg80211_chan_def chandef;
1082
1083 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1084 if (!old_beacon)
1085 return -ENOENT;
1086 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1087
1088 /* abort any running channel switch */
1089 sdata->vif.csa_active = false;
1090 kfree(sdata->u.ap.next_beacon);
1091 sdata->u.ap.next_beacon = NULL;
1092
1093 cancel_work_sync(&sdata->u.ap.request_smps_work);
1094
1095 /* turn off carrier for this interface and dependent VLANs */
1096 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1097 netif_carrier_off(vlan->dev);
1098 netif_carrier_off(dev);
1099
1100 /* remove beacon and probe response */
1101 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1102 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1103 kfree_rcu(old_beacon, rcu_head);
1104 if (old_probe_resp)
1105 kfree_rcu(old_probe_resp, rcu_head);
1106
1107 __sta_info_flush(sdata, true);
1108 ieee80211_free_keys(sdata, true);
1109
1110 sdata->vif.bss_conf.enable_beacon = false;
1111 sdata->vif.bss_conf.ssid_len = 0;
1112 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1113 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1114
1115 if (sdata->wdev.cac_started) {
1116 chandef = sdata->vif.bss_conf.chandef;
1117 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1118 cfg80211_cac_event(sdata->dev, &chandef,
1119 NL80211_RADAR_CAC_ABORTED,
1120 GFP_KERNEL);
1121 }
1122
1123 drv_stop_ap(sdata->local, sdata);
1124
1125 /* free all potentially still buffered bcast frames */
1126 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1127 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1128
1129 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1130 mutex_lock(&local->mtx);
1131 ieee80211_vif_release_channel(sdata);
1132 mutex_unlock(&local->mtx);
1133
1134 return 0;
1135 }
1136
1137 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1138 struct iapp_layer2_update {
1139 u8 da[ETH_ALEN]; /* broadcast */
1140 u8 sa[ETH_ALEN]; /* STA addr */
1141 __be16 len; /* 6 */
1142 u8 dsap; /* 0 */
1143 u8 ssap; /* 0 */
1144 u8 control;
1145 u8 xid_info[3];
1146 } __packed;
1147
1148 static void ieee80211_send_layer2_update(struct sta_info *sta)
1149 {
1150 struct iapp_layer2_update *msg;
1151 struct sk_buff *skb;
1152
1153 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1154 * bridge devices */
1155
1156 skb = dev_alloc_skb(sizeof(*msg));
1157 if (!skb)
1158 return;
1159 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1160
1161 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1162 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1163
1164 eth_broadcast_addr(msg->da);
1165 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1166 msg->len = htons(6);
1167 msg->dsap = 0;
1168 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1169 msg->control = 0xaf; /* XID response lsb.1111F101.
1170 * F=0 (no poll command; unsolicited frame) */
1171 msg->xid_info[0] = 0x81; /* XID format identifier */
1172 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1173 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1174
1175 skb->dev = sta->sdata->dev;
1176 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1177 memset(skb->cb, 0, sizeof(skb->cb));
1178 netif_rx_ni(skb);
1179 }
1180
1181 static int sta_apply_auth_flags(struct ieee80211_local *local,
1182 struct sta_info *sta,
1183 u32 mask, u32 set)
1184 {
1185 int ret;
1186
1187 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1188 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1189 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1190 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1191 if (ret)
1192 return ret;
1193 }
1194
1195 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1196 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1197 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1198 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1199 if (ret)
1200 return ret;
1201 }
1202
1203 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1204 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1205 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1206 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1207 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1208 else
1209 ret = 0;
1210 if (ret)
1211 return ret;
1212 }
1213
1214 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1215 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1216 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1217 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1218 if (ret)
1219 return ret;
1220 }
1221
1222 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1223 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1224 test_sta_flag(sta, WLAN_STA_AUTH)) {
1225 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1226 if (ret)
1227 return ret;
1228 }
1229
1230 return 0;
1231 }
1232
1233 static int sta_apply_parameters(struct ieee80211_local *local,
1234 struct sta_info *sta,
1235 struct station_parameters *params)
1236 {
1237 int ret = 0;
1238 struct ieee80211_supported_band *sband;
1239 struct ieee80211_sub_if_data *sdata = sta->sdata;
1240 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1241 u32 mask, set;
1242
1243 sband = local->hw.wiphy->bands[band];
1244
1245 mask = params->sta_flags_mask;
1246 set = params->sta_flags_set;
1247
1248 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1249 /*
1250 * In mesh mode, ASSOCIATED isn't part of the nl80211
1251 * API but must follow AUTHENTICATED for driver state.
1252 */
1253 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1254 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1255 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1256 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1257 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1258 /*
1259 * TDLS -- everything follows authorized, but
1260 * only becoming authorized is possible, not
1261 * going back
1262 */
1263 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1264 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1265 BIT(NL80211_STA_FLAG_ASSOCIATED);
1266 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1267 BIT(NL80211_STA_FLAG_ASSOCIATED);
1268 }
1269 }
1270
1271 ret = sta_apply_auth_flags(local, sta, mask, set);
1272 if (ret)
1273 return ret;
1274
1275 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1276 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1277 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1278 else
1279 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1280 }
1281
1282 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1283 if (set & BIT(NL80211_STA_FLAG_WME)) {
1284 set_sta_flag(sta, WLAN_STA_WME);
1285 sta->sta.wme = true;
1286 } else {
1287 clear_sta_flag(sta, WLAN_STA_WME);
1288 sta->sta.wme = false;
1289 }
1290 }
1291
1292 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1293 if (set & BIT(NL80211_STA_FLAG_MFP))
1294 set_sta_flag(sta, WLAN_STA_MFP);
1295 else
1296 clear_sta_flag(sta, WLAN_STA_MFP);
1297 }
1298
1299 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1300 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1301 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1302 else
1303 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1304 }
1305
1306 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1307 sta->sta.uapsd_queues = params->uapsd_queues;
1308 sta->sta.max_sp = params->max_sp;
1309 }
1310
1311 /*
1312 * cfg80211 validates this (1-2007) and allows setting the AID
1313 * only when creating a new station entry
1314 */
1315 if (params->aid)
1316 sta->sta.aid = params->aid;
1317
1318 /*
1319 * Some of the following updates would be racy if called on an
1320 * existing station, via ieee80211_change_station(). However,
1321 * all such changes are rejected by cfg80211 except for updates
1322 * changing the supported rates on an existing but not yet used
1323 * TDLS peer.
1324 */
1325
1326 if (params->listen_interval >= 0)
1327 sta->listen_interval = params->listen_interval;
1328
1329 if (params->supported_rates) {
1330 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1331 sband, params->supported_rates,
1332 params->supported_rates_len,
1333 &sta->sta.supp_rates[band]);
1334 }
1335
1336 if (params->ht_capa)
1337 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1338 params->ht_capa, sta);
1339
1340 if (params->vht_capa)
1341 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1342 params->vht_capa, sta);
1343
1344 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1345 #ifdef CONFIG_MAC80211_MESH
1346 u32 changed = 0;
1347
1348 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1349 switch (params->plink_state) {
1350 case NL80211_PLINK_ESTAB:
1351 if (sta->plink_state != NL80211_PLINK_ESTAB)
1352 changed = mesh_plink_inc_estab_count(
1353 sdata);
1354 sta->plink_state = params->plink_state;
1355
1356 ieee80211_mps_sta_status_update(sta);
1357 changed |= ieee80211_mps_set_sta_local_pm(sta,
1358 sdata->u.mesh.mshcfg.power_mode);
1359 break;
1360 case NL80211_PLINK_LISTEN:
1361 case NL80211_PLINK_BLOCKED:
1362 case NL80211_PLINK_OPN_SNT:
1363 case NL80211_PLINK_OPN_RCVD:
1364 case NL80211_PLINK_CNF_RCVD:
1365 case NL80211_PLINK_HOLDING:
1366 if (sta->plink_state == NL80211_PLINK_ESTAB)
1367 changed = mesh_plink_dec_estab_count(
1368 sdata);
1369 sta->plink_state = params->plink_state;
1370
1371 ieee80211_mps_sta_status_update(sta);
1372 changed |= ieee80211_mps_set_sta_local_pm(sta,
1373 NL80211_MESH_POWER_UNKNOWN);
1374 break;
1375 default:
1376 /* nothing */
1377 break;
1378 }
1379 }
1380
1381 switch (params->plink_action) {
1382 case NL80211_PLINK_ACTION_NO_ACTION:
1383 /* nothing */
1384 break;
1385 case NL80211_PLINK_ACTION_OPEN:
1386 changed |= mesh_plink_open(sta);
1387 break;
1388 case NL80211_PLINK_ACTION_BLOCK:
1389 changed |= mesh_plink_block(sta);
1390 break;
1391 }
1392
1393 if (params->local_pm)
1394 changed |=
1395 ieee80211_mps_set_sta_local_pm(sta,
1396 params->local_pm);
1397 ieee80211_mbss_info_change_notify(sdata, changed);
1398 #endif
1399 }
1400
1401 return 0;
1402 }
1403
1404 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1405 u8 *mac, struct station_parameters *params)
1406 {
1407 struct ieee80211_local *local = wiphy_priv(wiphy);
1408 struct sta_info *sta;
1409 struct ieee80211_sub_if_data *sdata;
1410 int err;
1411 int layer2_update;
1412
1413 if (params->vlan) {
1414 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1415
1416 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1417 sdata->vif.type != NL80211_IFTYPE_AP)
1418 return -EINVAL;
1419 } else
1420 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1421
1422 if (ether_addr_equal(mac, sdata->vif.addr))
1423 return -EINVAL;
1424
1425 if (is_multicast_ether_addr(mac))
1426 return -EINVAL;
1427
1428 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1429 if (!sta)
1430 return -ENOMEM;
1431
1432 /*
1433 * defaults -- if userspace wants something else we'll
1434 * change it accordingly in sta_apply_parameters()
1435 */
1436 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1437 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1438 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1439 }
1440
1441 err = sta_apply_parameters(local, sta, params);
1442 if (err) {
1443 sta_info_free(local, sta);
1444 return err;
1445 }
1446
1447 /*
1448 * for TDLS, rate control should be initialized only when
1449 * rates are known and station is marked authorized
1450 */
1451 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1452 rate_control_rate_init(sta);
1453
1454 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1455 sdata->vif.type == NL80211_IFTYPE_AP;
1456
1457 err = sta_info_insert_rcu(sta);
1458 if (err) {
1459 rcu_read_unlock();
1460 return err;
1461 }
1462
1463 if (layer2_update)
1464 ieee80211_send_layer2_update(sta);
1465
1466 rcu_read_unlock();
1467
1468 return 0;
1469 }
1470
1471 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1472 u8 *mac)
1473 {
1474 struct ieee80211_sub_if_data *sdata;
1475
1476 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1477
1478 if (mac)
1479 return sta_info_destroy_addr_bss(sdata, mac);
1480
1481 sta_info_flush(sdata);
1482 return 0;
1483 }
1484
1485 static int ieee80211_change_station(struct wiphy *wiphy,
1486 struct net_device *dev, u8 *mac,
1487 struct station_parameters *params)
1488 {
1489 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1490 struct ieee80211_local *local = wiphy_priv(wiphy);
1491 struct sta_info *sta;
1492 struct ieee80211_sub_if_data *vlansdata;
1493 enum cfg80211_station_type statype;
1494 int err;
1495
1496 mutex_lock(&local->sta_mtx);
1497
1498 sta = sta_info_get_bss(sdata, mac);
1499 if (!sta) {
1500 err = -ENOENT;
1501 goto out_err;
1502 }
1503
1504 switch (sdata->vif.type) {
1505 case NL80211_IFTYPE_MESH_POINT:
1506 if (sdata->u.mesh.user_mpm)
1507 statype = CFG80211_STA_MESH_PEER_USER;
1508 else
1509 statype = CFG80211_STA_MESH_PEER_KERNEL;
1510 break;
1511 case NL80211_IFTYPE_ADHOC:
1512 statype = CFG80211_STA_IBSS;
1513 break;
1514 case NL80211_IFTYPE_STATION:
1515 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1516 statype = CFG80211_STA_AP_STA;
1517 break;
1518 }
1519 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1520 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1521 else
1522 statype = CFG80211_STA_TDLS_PEER_SETUP;
1523 break;
1524 case NL80211_IFTYPE_AP:
1525 case NL80211_IFTYPE_AP_VLAN:
1526 statype = CFG80211_STA_AP_CLIENT;
1527 break;
1528 default:
1529 err = -EOPNOTSUPP;
1530 goto out_err;
1531 }
1532
1533 err = cfg80211_check_station_change(wiphy, params, statype);
1534 if (err)
1535 goto out_err;
1536
1537 if (params->vlan && params->vlan != sta->sdata->dev) {
1538 bool prev_4addr = false;
1539 bool new_4addr = false;
1540
1541 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1542
1543 if (params->vlan->ieee80211_ptr->use_4addr) {
1544 if (vlansdata->u.vlan.sta) {
1545 err = -EBUSY;
1546 goto out_err;
1547 }
1548
1549 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1550 new_4addr = true;
1551 }
1552
1553 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1554 sta->sdata->u.vlan.sta) {
1555 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1556 prev_4addr = true;
1557 }
1558
1559 sta->sdata = vlansdata;
1560
1561 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1562 prev_4addr != new_4addr) {
1563 if (new_4addr)
1564 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1565 else
1566 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1567 }
1568
1569 ieee80211_send_layer2_update(sta);
1570 }
1571
1572 err = sta_apply_parameters(local, sta, params);
1573 if (err)
1574 goto out_err;
1575
1576 /* When peer becomes authorized, init rate control as well */
1577 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1578 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1579 rate_control_rate_init(sta);
1580
1581 mutex_unlock(&local->sta_mtx);
1582
1583 if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1584 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1585 sta->known_smps_mode != sta->sdata->bss->req_smps &&
1586 test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1587 sta_info_tx_streams(sta) != 1) {
1588 ht_dbg(sta->sdata,
1589 "%pM just authorized and MIMO capable - update SMPS\n",
1590 sta->sta.addr);
1591 ieee80211_send_smps_action(sta->sdata,
1592 sta->sdata->bss->req_smps,
1593 sta->sta.addr,
1594 sta->sdata->vif.bss_conf.bssid);
1595 }
1596
1597 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1598 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1599 ieee80211_recalc_ps(local, -1);
1600 ieee80211_recalc_ps_vif(sdata);
1601 }
1602
1603 return 0;
1604 out_err:
1605 mutex_unlock(&local->sta_mtx);
1606 return err;
1607 }
1608
1609 #ifdef CONFIG_MAC80211_MESH
1610 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1611 u8 *dst, u8 *next_hop)
1612 {
1613 struct ieee80211_sub_if_data *sdata;
1614 struct mesh_path *mpath;
1615 struct sta_info *sta;
1616
1617 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1618
1619 rcu_read_lock();
1620 sta = sta_info_get(sdata, next_hop);
1621 if (!sta) {
1622 rcu_read_unlock();
1623 return -ENOENT;
1624 }
1625
1626 mpath = mesh_path_add(sdata, dst);
1627 if (IS_ERR(mpath)) {
1628 rcu_read_unlock();
1629 return PTR_ERR(mpath);
1630 }
1631
1632 mesh_path_fix_nexthop(mpath, sta);
1633
1634 rcu_read_unlock();
1635 return 0;
1636 }
1637
1638 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1639 u8 *dst)
1640 {
1641 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1642
1643 if (dst)
1644 return mesh_path_del(sdata, dst);
1645
1646 mesh_path_flush_by_iface(sdata);
1647 return 0;
1648 }
1649
1650 static int ieee80211_change_mpath(struct wiphy *wiphy,
1651 struct net_device *dev,
1652 u8 *dst, u8 *next_hop)
1653 {
1654 struct ieee80211_sub_if_data *sdata;
1655 struct mesh_path *mpath;
1656 struct sta_info *sta;
1657
1658 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1659
1660 rcu_read_lock();
1661
1662 sta = sta_info_get(sdata, next_hop);
1663 if (!sta) {
1664 rcu_read_unlock();
1665 return -ENOENT;
1666 }
1667
1668 mpath = mesh_path_lookup(sdata, dst);
1669 if (!mpath) {
1670 rcu_read_unlock();
1671 return -ENOENT;
1672 }
1673
1674 mesh_path_fix_nexthop(mpath, sta);
1675
1676 rcu_read_unlock();
1677 return 0;
1678 }
1679
1680 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1681 struct mpath_info *pinfo)
1682 {
1683 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1684
1685 if (next_hop_sta)
1686 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1687 else
1688 memset(next_hop, 0, ETH_ALEN);
1689
1690 memset(pinfo, 0, sizeof(*pinfo));
1691
1692 pinfo->generation = mesh_paths_generation;
1693
1694 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1695 MPATH_INFO_SN |
1696 MPATH_INFO_METRIC |
1697 MPATH_INFO_EXPTIME |
1698 MPATH_INFO_DISCOVERY_TIMEOUT |
1699 MPATH_INFO_DISCOVERY_RETRIES |
1700 MPATH_INFO_FLAGS;
1701
1702 pinfo->frame_qlen = mpath->frame_queue.qlen;
1703 pinfo->sn = mpath->sn;
1704 pinfo->metric = mpath->metric;
1705 if (time_before(jiffies, mpath->exp_time))
1706 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1707 pinfo->discovery_timeout =
1708 jiffies_to_msecs(mpath->discovery_timeout);
1709 pinfo->discovery_retries = mpath->discovery_retries;
1710 if (mpath->flags & MESH_PATH_ACTIVE)
1711 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1712 if (mpath->flags & MESH_PATH_RESOLVING)
1713 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1714 if (mpath->flags & MESH_PATH_SN_VALID)
1715 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1716 if (mpath->flags & MESH_PATH_FIXED)
1717 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1718 if (mpath->flags & MESH_PATH_RESOLVED)
1719 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1720 }
1721
1722 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1723 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1724
1725 {
1726 struct ieee80211_sub_if_data *sdata;
1727 struct mesh_path *mpath;
1728
1729 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730
1731 rcu_read_lock();
1732 mpath = mesh_path_lookup(sdata, dst);
1733 if (!mpath) {
1734 rcu_read_unlock();
1735 return -ENOENT;
1736 }
1737 memcpy(dst, mpath->dst, ETH_ALEN);
1738 mpath_set_pinfo(mpath, next_hop, pinfo);
1739 rcu_read_unlock();
1740 return 0;
1741 }
1742
1743 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1744 int idx, u8 *dst, u8 *next_hop,
1745 struct mpath_info *pinfo)
1746 {
1747 struct ieee80211_sub_if_data *sdata;
1748 struct mesh_path *mpath;
1749
1750 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1751
1752 rcu_read_lock();
1753 mpath = mesh_path_lookup_by_idx(sdata, idx);
1754 if (!mpath) {
1755 rcu_read_unlock();
1756 return -ENOENT;
1757 }
1758 memcpy(dst, mpath->dst, ETH_ALEN);
1759 mpath_set_pinfo(mpath, next_hop, pinfo);
1760 rcu_read_unlock();
1761 return 0;
1762 }
1763
1764 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1765 struct net_device *dev,
1766 struct mesh_config *conf)
1767 {
1768 struct ieee80211_sub_if_data *sdata;
1769 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1770
1771 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1772 return 0;
1773 }
1774
1775 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1776 {
1777 return (mask >> (parm-1)) & 0x1;
1778 }
1779
1780 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1781 const struct mesh_setup *setup)
1782 {
1783 u8 *new_ie;
1784 const u8 *old_ie;
1785 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1786 struct ieee80211_sub_if_data, u.mesh);
1787
1788 /* allocate information elements */
1789 new_ie = NULL;
1790 old_ie = ifmsh->ie;
1791
1792 if (setup->ie_len) {
1793 new_ie = kmemdup(setup->ie, setup->ie_len,
1794 GFP_KERNEL);
1795 if (!new_ie)
1796 return -ENOMEM;
1797 }
1798 ifmsh->ie_len = setup->ie_len;
1799 ifmsh->ie = new_ie;
1800 kfree(old_ie);
1801
1802 /* now copy the rest of the setup parameters */
1803 ifmsh->mesh_id_len = setup->mesh_id_len;
1804 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1805 ifmsh->mesh_sp_id = setup->sync_method;
1806 ifmsh->mesh_pp_id = setup->path_sel_proto;
1807 ifmsh->mesh_pm_id = setup->path_metric;
1808 ifmsh->user_mpm = setup->user_mpm;
1809 ifmsh->mesh_auth_id = setup->auth_id;
1810 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1811 if (setup->is_authenticated)
1812 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1813 if (setup->is_secure)
1814 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1815
1816 /* mcast rate setting in Mesh Node */
1817 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1818 sizeof(setup->mcast_rate));
1819 sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1820
1821 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1822 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1823
1824 return 0;
1825 }
1826
1827 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1828 struct net_device *dev, u32 mask,
1829 const struct mesh_config *nconf)
1830 {
1831 struct mesh_config *conf;
1832 struct ieee80211_sub_if_data *sdata;
1833 struct ieee80211_if_mesh *ifmsh;
1834
1835 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836 ifmsh = &sdata->u.mesh;
1837
1838 /* Set the config options which we are interested in setting */
1839 conf = &(sdata->u.mesh.mshcfg);
1840 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1841 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1842 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1843 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1844 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1845 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1846 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1847 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1848 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1849 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1850 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1851 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1852 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1853 conf->element_ttl = nconf->element_ttl;
1854 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1855 if (ifmsh->user_mpm)
1856 return -EBUSY;
1857 conf->auto_open_plinks = nconf->auto_open_plinks;
1858 }
1859 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1860 conf->dot11MeshNbrOffsetMaxNeighbor =
1861 nconf->dot11MeshNbrOffsetMaxNeighbor;
1862 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1863 conf->dot11MeshHWMPmaxPREQretries =
1864 nconf->dot11MeshHWMPmaxPREQretries;
1865 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1866 conf->path_refresh_time = nconf->path_refresh_time;
1867 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1868 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1869 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1870 conf->dot11MeshHWMPactivePathTimeout =
1871 nconf->dot11MeshHWMPactivePathTimeout;
1872 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1873 conf->dot11MeshHWMPpreqMinInterval =
1874 nconf->dot11MeshHWMPpreqMinInterval;
1875 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1876 conf->dot11MeshHWMPperrMinInterval =
1877 nconf->dot11MeshHWMPperrMinInterval;
1878 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1879 mask))
1880 conf->dot11MeshHWMPnetDiameterTraversalTime =
1881 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1882 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1883 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1884 ieee80211_mesh_root_setup(ifmsh);
1885 }
1886 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1887 /* our current gate announcement implementation rides on root
1888 * announcements, so require this ifmsh to also be a root node
1889 * */
1890 if (nconf->dot11MeshGateAnnouncementProtocol &&
1891 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1892 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1893 ieee80211_mesh_root_setup(ifmsh);
1894 }
1895 conf->dot11MeshGateAnnouncementProtocol =
1896 nconf->dot11MeshGateAnnouncementProtocol;
1897 }
1898 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1899 conf->dot11MeshHWMPRannInterval =
1900 nconf->dot11MeshHWMPRannInterval;
1901 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1902 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1903 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1904 /* our RSSI threshold implementation is supported only for
1905 * devices that report signal in dBm.
1906 */
1907 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1908 return -ENOTSUPP;
1909 conf->rssi_threshold = nconf->rssi_threshold;
1910 }
1911 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1912 conf->ht_opmode = nconf->ht_opmode;
1913 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1914 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1915 }
1916 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1917 conf->dot11MeshHWMPactivePathToRootTimeout =
1918 nconf->dot11MeshHWMPactivePathToRootTimeout;
1919 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1920 conf->dot11MeshHWMProotInterval =
1921 nconf->dot11MeshHWMProotInterval;
1922 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1923 conf->dot11MeshHWMPconfirmationInterval =
1924 nconf->dot11MeshHWMPconfirmationInterval;
1925 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1926 conf->power_mode = nconf->power_mode;
1927 ieee80211_mps_local_status_update(sdata);
1928 }
1929 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1930 conf->dot11MeshAwakeWindowDuration =
1931 nconf->dot11MeshAwakeWindowDuration;
1932 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1933 conf->plink_timeout = nconf->plink_timeout;
1934 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1935 return 0;
1936 }
1937
1938 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1939 const struct mesh_config *conf,
1940 const struct mesh_setup *setup)
1941 {
1942 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1943 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1944 int err;
1945
1946 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1947 err = copy_mesh_setup(ifmsh, setup);
1948 if (err)
1949 return err;
1950
1951 /* can mesh use other SMPS modes? */
1952 sdata->smps_mode = IEEE80211_SMPS_OFF;
1953 sdata->needed_rx_chains = sdata->local->rx_chains;
1954
1955 mutex_lock(&sdata->local->mtx);
1956 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1957 IEEE80211_CHANCTX_SHARED);
1958 mutex_unlock(&sdata->local->mtx);
1959 if (err)
1960 return err;
1961
1962 return ieee80211_start_mesh(sdata);
1963 }
1964
1965 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1966 {
1967 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1968
1969 ieee80211_stop_mesh(sdata);
1970 mutex_lock(&sdata->local->mtx);
1971 ieee80211_vif_release_channel(sdata);
1972 mutex_unlock(&sdata->local->mtx);
1973
1974 return 0;
1975 }
1976 #endif
1977
1978 static int ieee80211_change_bss(struct wiphy *wiphy,
1979 struct net_device *dev,
1980 struct bss_parameters *params)
1981 {
1982 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1983 enum ieee80211_band band;
1984 u32 changed = 0;
1985
1986 if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1987 return -ENOENT;
1988
1989 band = ieee80211_get_sdata_band(sdata);
1990
1991 if (params->use_cts_prot >= 0) {
1992 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1993 changed |= BSS_CHANGED_ERP_CTS_PROT;
1994 }
1995 if (params->use_short_preamble >= 0) {
1996 sdata->vif.bss_conf.use_short_preamble =
1997 params->use_short_preamble;
1998 changed |= BSS_CHANGED_ERP_PREAMBLE;
1999 }
2000
2001 if (!sdata->vif.bss_conf.use_short_slot &&
2002 band == IEEE80211_BAND_5GHZ) {
2003 sdata->vif.bss_conf.use_short_slot = true;
2004 changed |= BSS_CHANGED_ERP_SLOT;
2005 }
2006
2007 if (params->use_short_slot_time >= 0) {
2008 sdata->vif.bss_conf.use_short_slot =
2009 params->use_short_slot_time;
2010 changed |= BSS_CHANGED_ERP_SLOT;
2011 }
2012
2013 if (params->basic_rates) {
2014 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2015 wiphy->bands[band],
2016 params->basic_rates,
2017 params->basic_rates_len,
2018 &sdata->vif.bss_conf.basic_rates);
2019 changed |= BSS_CHANGED_BASIC_RATES;
2020 }
2021
2022 if (params->ap_isolate >= 0) {
2023 if (params->ap_isolate)
2024 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2025 else
2026 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2027 }
2028
2029 if (params->ht_opmode >= 0) {
2030 sdata->vif.bss_conf.ht_operation_mode =
2031 (u16) params->ht_opmode;
2032 changed |= BSS_CHANGED_HT;
2033 }
2034
2035 if (params->p2p_ctwindow >= 0) {
2036 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2037 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2038 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2039 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2040 changed |= BSS_CHANGED_P2P_PS;
2041 }
2042
2043 if (params->p2p_opp_ps > 0) {
2044 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2045 IEEE80211_P2P_OPPPS_ENABLE_BIT;
2046 changed |= BSS_CHANGED_P2P_PS;
2047 } else if (params->p2p_opp_ps == 0) {
2048 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2049 ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2050 changed |= BSS_CHANGED_P2P_PS;
2051 }
2052
2053 ieee80211_bss_info_change_notify(sdata, changed);
2054
2055 return 0;
2056 }
2057
2058 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2059 struct net_device *dev,
2060 struct ieee80211_txq_params *params)
2061 {
2062 struct ieee80211_local *local = wiphy_priv(wiphy);
2063 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2064 struct ieee80211_tx_queue_params p;
2065
2066 if (!local->ops->conf_tx)
2067 return -EOPNOTSUPP;
2068
2069 if (local->hw.queues < IEEE80211_NUM_ACS)
2070 return -EOPNOTSUPP;
2071
2072 memset(&p, 0, sizeof(p));
2073 p.aifs = params->aifs;
2074 p.cw_max = params->cwmax;
2075 p.cw_min = params->cwmin;
2076 p.txop = params->txop;
2077
2078 /*
2079 * Setting tx queue params disables u-apsd because it's only
2080 * called in master mode.
2081 */
2082 p.uapsd = false;
2083
2084 sdata->tx_conf[params->ac] = p;
2085 if (drv_conf_tx(local, sdata, params->ac, &p)) {
2086 wiphy_debug(local->hw.wiphy,
2087 "failed to set TX queue parameters for AC %d\n",
2088 params->ac);
2089 return -EINVAL;
2090 }
2091
2092 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2093
2094 return 0;
2095 }
2096
2097 #ifdef CONFIG_PM
2098 static int ieee80211_suspend(struct wiphy *wiphy,
2099 struct cfg80211_wowlan *wowlan)
2100 {
2101 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2102 }
2103
2104 static int ieee80211_resume(struct wiphy *wiphy)
2105 {
2106 return __ieee80211_resume(wiphy_priv(wiphy));
2107 }
2108 #else
2109 #define ieee80211_suspend NULL
2110 #define ieee80211_resume NULL
2111 #endif
2112
2113 static int ieee80211_scan(struct wiphy *wiphy,
2114 struct cfg80211_scan_request *req)
2115 {
2116 struct ieee80211_sub_if_data *sdata;
2117
2118 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2119
2120 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2121 case NL80211_IFTYPE_STATION:
2122 case NL80211_IFTYPE_ADHOC:
2123 case NL80211_IFTYPE_MESH_POINT:
2124 case NL80211_IFTYPE_P2P_CLIENT:
2125 case NL80211_IFTYPE_P2P_DEVICE:
2126 break;
2127 case NL80211_IFTYPE_P2P_GO:
2128 if (sdata->local->ops->hw_scan)
2129 break;
2130 /*
2131 * FIXME: implement NoA while scanning in software,
2132 * for now fall through to allow scanning only when
2133 * beaconing hasn't been configured yet
2134 */
2135 case NL80211_IFTYPE_AP:
2136 /*
2137 * If the scan has been forced (and the driver supports
2138 * forcing), don't care about being beaconing already.
2139 * This will create problems to the attached stations (e.g. all
2140 * the frames sent while scanning on other channel will be
2141 * lost)
2142 */
2143 if (sdata->u.ap.beacon &&
2144 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2145 !(req->flags & NL80211_SCAN_FLAG_AP)))
2146 return -EOPNOTSUPP;
2147 break;
2148 default:
2149 return -EOPNOTSUPP;
2150 }
2151
2152 return ieee80211_request_scan(sdata, req);
2153 }
2154
2155 static int
2156 ieee80211_sched_scan_start(struct wiphy *wiphy,
2157 struct net_device *dev,
2158 struct cfg80211_sched_scan_request *req)
2159 {
2160 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2161
2162 if (!sdata->local->ops->sched_scan_start)
2163 return -EOPNOTSUPP;
2164
2165 return ieee80211_request_sched_scan_start(sdata, req);
2166 }
2167
2168 static int
2169 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2170 {
2171 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2172
2173 if (!sdata->local->ops->sched_scan_stop)
2174 return -EOPNOTSUPP;
2175
2176 return ieee80211_request_sched_scan_stop(sdata);
2177 }
2178
2179 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2180 struct cfg80211_auth_request *req)
2181 {
2182 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2183 }
2184
2185 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2186 struct cfg80211_assoc_request *req)
2187 {
2188 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2189 }
2190
2191 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2192 struct cfg80211_deauth_request *req)
2193 {
2194 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2195 }
2196
2197 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2198 struct cfg80211_disassoc_request *req)
2199 {
2200 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2201 }
2202
2203 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2204 struct cfg80211_ibss_params *params)
2205 {
2206 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2207 }
2208
2209 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2210 {
2211 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2212 }
2213
2214 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2215 int rate[IEEE80211_NUM_BANDS])
2216 {
2217 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2218
2219 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2220 sizeof(int) * IEEE80211_NUM_BANDS);
2221
2222 return 0;
2223 }
2224
2225 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2226 {
2227 struct ieee80211_local *local = wiphy_priv(wiphy);
2228 int err;
2229
2230 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2231 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2232
2233 if (err)
2234 return err;
2235 }
2236
2237 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2238 err = drv_set_coverage_class(local, wiphy->coverage_class);
2239
2240 if (err)
2241 return err;
2242 }
2243
2244 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2245 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2246
2247 if (err)
2248 return err;
2249 }
2250
2251 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2252 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2253 return -EINVAL;
2254 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2255 }
2256 if (changed & WIPHY_PARAM_RETRY_LONG) {
2257 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2258 return -EINVAL;
2259 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2260 }
2261 if (changed &
2262 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2263 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2264
2265 return 0;
2266 }
2267
2268 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2269 struct wireless_dev *wdev,
2270 enum nl80211_tx_power_setting type, int mbm)
2271 {
2272 struct ieee80211_local *local = wiphy_priv(wiphy);
2273 struct ieee80211_sub_if_data *sdata;
2274
2275 if (wdev) {
2276 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2277
2278 switch (type) {
2279 case NL80211_TX_POWER_AUTOMATIC:
2280 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2281 break;
2282 case NL80211_TX_POWER_LIMITED:
2283 case NL80211_TX_POWER_FIXED:
2284 if (mbm < 0 || (mbm % 100))
2285 return -EOPNOTSUPP;
2286 sdata->user_power_level = MBM_TO_DBM(mbm);
2287 break;
2288 }
2289
2290 ieee80211_recalc_txpower(sdata);
2291
2292 return 0;
2293 }
2294
2295 switch (type) {
2296 case NL80211_TX_POWER_AUTOMATIC:
2297 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2298 break;
2299 case NL80211_TX_POWER_LIMITED:
2300 case NL80211_TX_POWER_FIXED:
2301 if (mbm < 0 || (mbm % 100))
2302 return -EOPNOTSUPP;
2303 local->user_power_level = MBM_TO_DBM(mbm);
2304 break;
2305 }
2306
2307 mutex_lock(&local->iflist_mtx);
2308 list_for_each_entry(sdata, &local->interfaces, list)
2309 sdata->user_power_level = local->user_power_level;
2310 list_for_each_entry(sdata, &local->interfaces, list)
2311 ieee80211_recalc_txpower(sdata);
2312 mutex_unlock(&local->iflist_mtx);
2313
2314 return 0;
2315 }
2316
2317 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2318 struct wireless_dev *wdev,
2319 int *dbm)
2320 {
2321 struct ieee80211_local *local = wiphy_priv(wiphy);
2322 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2323
2324 if (!local->use_chanctx)
2325 *dbm = local->hw.conf.power_level;
2326 else
2327 *dbm = sdata->vif.bss_conf.txpower;
2328
2329 return 0;
2330 }
2331
2332 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2333 const u8 *addr)
2334 {
2335 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2336
2337 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2338
2339 return 0;
2340 }
2341
2342 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2343 {
2344 struct ieee80211_local *local = wiphy_priv(wiphy);
2345
2346 drv_rfkill_poll(local);
2347 }
2348
2349 #ifdef CONFIG_NL80211_TESTMODE
2350 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2351 struct wireless_dev *wdev,
2352 void *data, int len)
2353 {
2354 struct ieee80211_local *local = wiphy_priv(wiphy);
2355 struct ieee80211_vif *vif = NULL;
2356
2357 if (!local->ops->testmode_cmd)
2358 return -EOPNOTSUPP;
2359
2360 if (wdev) {
2361 struct ieee80211_sub_if_data *sdata;
2362
2363 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2364 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2365 vif = &sdata->vif;
2366 }
2367
2368 return local->ops->testmode_cmd(&local->hw, vif, data, len);
2369 }
2370
2371 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2372 struct sk_buff *skb,
2373 struct netlink_callback *cb,
2374 void *data, int len)
2375 {
2376 struct ieee80211_local *local = wiphy_priv(wiphy);
2377
2378 if (!local->ops->testmode_dump)
2379 return -EOPNOTSUPP;
2380
2381 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2382 }
2383 #endif
2384
2385 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2386 enum ieee80211_smps_mode smps_mode)
2387 {
2388 struct sta_info *sta;
2389 enum ieee80211_smps_mode old_req;
2390 int i;
2391
2392 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2393 return -EINVAL;
2394
2395 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2396 return 0;
2397
2398 old_req = sdata->u.ap.req_smps;
2399 sdata->u.ap.req_smps = smps_mode;
2400
2401 /* AUTOMATIC doesn't mean much for AP - don't allow it */
2402 if (old_req == smps_mode ||
2403 smps_mode == IEEE80211_SMPS_AUTOMATIC)
2404 return 0;
2405
2406 /* If no associated stations, there's no need to do anything */
2407 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2408 sdata->smps_mode = smps_mode;
2409 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2410 return 0;
2411 }
2412
2413 ht_dbg(sdata,
2414 "SMSP %d requested in AP mode, sending Action frame to %d stations\n",
2415 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2416
2417 mutex_lock(&sdata->local->sta_mtx);
2418 for (i = 0; i < STA_HASH_SIZE; i++) {
2419 for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
2420 lockdep_is_held(&sdata->local->sta_mtx));
2421 sta;
2422 sta = rcu_dereference_protected(sta->hnext,
2423 lockdep_is_held(&sdata->local->sta_mtx))) {
2424 /*
2425 * Only stations associated to our AP and
2426 * associated VLANs
2427 */
2428 if (sta->sdata->bss != &sdata->u.ap)
2429 continue;
2430
2431 /* This station doesn't support MIMO - skip it */
2432 if (sta_info_tx_streams(sta) == 1)
2433 continue;
2434
2435 /*
2436 * Don't wake up a STA just to send the action frame
2437 * unless we are getting more restrictive.
2438 */
2439 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2440 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2441 smps_mode)) {
2442 ht_dbg(sdata,
2443 "Won't send SMPS to sleeping STA %pM\n",
2444 sta->sta.addr);
2445 continue;
2446 }
2447
2448 /*
2449 * If the STA is not authorized, wait until it gets
2450 * authorized and the action frame will be sent then.
2451 */
2452 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2453 continue;
2454
2455 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2456 ieee80211_send_smps_action(sdata, smps_mode,
2457 sta->sta.addr,
2458 sdata->vif.bss_conf.bssid);
2459 }
2460 }
2461 mutex_unlock(&sdata->local->sta_mtx);
2462
2463 sdata->smps_mode = smps_mode;
2464 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2465
2466 return 0;
2467 }
2468
2469 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2470 enum ieee80211_smps_mode smps_mode)
2471 {
2472 const u8 *ap;
2473 enum ieee80211_smps_mode old_req;
2474 int err;
2475
2476 lockdep_assert_held(&sdata->wdev.mtx);
2477
2478 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2479 return -EINVAL;
2480
2481 old_req = sdata->u.mgd.req_smps;
2482 sdata->u.mgd.req_smps = smps_mode;
2483
2484 if (old_req == smps_mode &&
2485 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2486 return 0;
2487
2488 /*
2489 * If not associated, or current association is not an HT
2490 * association, there's no need to do anything, just store
2491 * the new value until we associate.
2492 */
2493 if (!sdata->u.mgd.associated ||
2494 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2495 return 0;
2496
2497 ap = sdata->u.mgd.associated->bssid;
2498
2499 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2500 if (sdata->u.mgd.powersave)
2501 smps_mode = IEEE80211_SMPS_DYNAMIC;
2502 else
2503 smps_mode = IEEE80211_SMPS_OFF;
2504 }
2505
2506 /* send SM PS frame to AP */
2507 err = ieee80211_send_smps_action(sdata, smps_mode,
2508 ap, ap);
2509 if (err)
2510 sdata->u.mgd.req_smps = old_req;
2511
2512 return err;
2513 }
2514
2515 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2516 bool enabled, int timeout)
2517 {
2518 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2519 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2520
2521 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2522 return -EOPNOTSUPP;
2523
2524 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2525 return -EOPNOTSUPP;
2526
2527 if (enabled == sdata->u.mgd.powersave &&
2528 timeout == local->dynamic_ps_forced_timeout)
2529 return 0;
2530
2531 sdata->u.mgd.powersave = enabled;
2532 local->dynamic_ps_forced_timeout = timeout;
2533
2534 /* no change, but if automatic follow powersave */
2535 sdata_lock(sdata);
2536 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2537 sdata_unlock(sdata);
2538
2539 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2540 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2541
2542 ieee80211_recalc_ps(local, -1);
2543 ieee80211_recalc_ps_vif(sdata);
2544
2545 return 0;
2546 }
2547
2548 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2549 struct net_device *dev,
2550 s32 rssi_thold, u32 rssi_hyst)
2551 {
2552 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2553 struct ieee80211_vif *vif = &sdata->vif;
2554 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2555
2556 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2557 rssi_hyst == bss_conf->cqm_rssi_hyst)
2558 return 0;
2559
2560 bss_conf->cqm_rssi_thold = rssi_thold;
2561 bss_conf->cqm_rssi_hyst = rssi_hyst;
2562
2563 /* tell the driver upon association, unless already associated */
2564 if (sdata->u.mgd.associated &&
2565 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2566 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2567
2568 return 0;
2569 }
2570
2571 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2572 struct net_device *dev,
2573 const u8 *addr,
2574 const struct cfg80211_bitrate_mask *mask)
2575 {
2576 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2577 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2578 int i, ret;
2579
2580 if (!ieee80211_sdata_running(sdata))
2581 return -ENETDOWN;
2582
2583 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2584 ret = drv_set_bitrate_mask(local, sdata, mask);
2585 if (ret)
2586 return ret;
2587 }
2588
2589 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2590 struct ieee80211_supported_band *sband = wiphy->bands[i];
2591 int j;
2592
2593 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2594 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2595 sizeof(mask->control[i].ht_mcs));
2596
2597 sdata->rc_has_mcs_mask[i] = false;
2598 if (!sband)
2599 continue;
2600
2601 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
2602 if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2603 sdata->rc_has_mcs_mask[i] = true;
2604 break;
2605 }
2606 }
2607
2608 return 0;
2609 }
2610
2611 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2612 struct ieee80211_sub_if_data *sdata,
2613 struct ieee80211_channel *channel,
2614 unsigned int duration, u64 *cookie,
2615 struct sk_buff *txskb,
2616 enum ieee80211_roc_type type)
2617 {
2618 struct ieee80211_roc_work *roc, *tmp;
2619 bool queued = false;
2620 int ret;
2621
2622 lockdep_assert_held(&local->mtx);
2623
2624 if (local->use_chanctx && !local->ops->remain_on_channel)
2625 return -EOPNOTSUPP;
2626
2627 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2628 if (!roc)
2629 return -ENOMEM;
2630
2631 roc->chan = channel;
2632 roc->duration = duration;
2633 roc->req_duration = duration;
2634 roc->frame = txskb;
2635 roc->type = type;
2636 roc->mgmt_tx_cookie = (unsigned long)txskb;
2637 roc->sdata = sdata;
2638 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2639 INIT_LIST_HEAD(&roc->dependents);
2640
2641 /* if there's one pending or we're scanning, queue this one */
2642 if (!list_empty(&local->roc_list) ||
2643 local->scanning || local->radar_detect_enabled)
2644 goto out_check_combine;
2645
2646 /* if not HW assist, just queue & schedule work */
2647 if (!local->ops->remain_on_channel) {
2648 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2649 goto out_queue;
2650 }
2651
2652 /* otherwise actually kick it off here (for error handling) */
2653
2654 /*
2655 * If the duration is zero, then the driver
2656 * wouldn't actually do anything. Set it to
2657 * 10 for now.
2658 *
2659 * TODO: cancel the off-channel operation
2660 * when we get the SKB's TX status and
2661 * the wait time was zero before.
2662 */
2663 if (!duration)
2664 duration = 10;
2665
2666 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2667 if (ret) {
2668 kfree(roc);
2669 return ret;
2670 }
2671
2672 roc->started = true;
2673 goto out_queue;
2674
2675 out_check_combine:
2676 list_for_each_entry(tmp, &local->roc_list, list) {
2677 if (tmp->chan != channel || tmp->sdata != sdata)
2678 continue;
2679
2680 /*
2681 * Extend this ROC if possible:
2682 *
2683 * If it hasn't started yet, just increase the duration
2684 * and add the new one to the list of dependents.
2685 * If the type of the new ROC has higher priority, modify the
2686 * type of the previous one to match that of the new one.
2687 */
2688 if (!tmp->started) {
2689 list_add_tail(&roc->list, &tmp->dependents);
2690 tmp->duration = max(tmp->duration, roc->duration);
2691 tmp->type = max(tmp->type, roc->type);
2692 queued = true;
2693 break;
2694 }
2695
2696 /* If it has already started, it's more difficult ... */
2697 if (local->ops->remain_on_channel) {
2698 unsigned long j = jiffies;
2699
2700 /*
2701 * In the offloaded ROC case, if it hasn't begun, add
2702 * this new one to the dependent list to be handled
2703 * when the master one begins. If it has begun,
2704 * check that there's still a minimum time left and
2705 * if so, start this one, transmitting the frame, but
2706 * add it to the list directly after this one with
2707 * a reduced time so we'll ask the driver to execute
2708 * it right after finishing the previous one, in the
2709 * hope that it'll also be executed right afterwards,
2710 * effectively extending the old one.
2711 * If there's no minimum time left, just add it to the
2712 * normal list.
2713 * TODO: the ROC type is ignored here, assuming that it
2714 * is better to immediately use the current ROC.
2715 */
2716 if (!tmp->hw_begun) {
2717 list_add_tail(&roc->list, &tmp->dependents);
2718 queued = true;
2719 break;
2720 }
2721
2722 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2723 tmp->hw_start_time +
2724 msecs_to_jiffies(tmp->duration))) {
2725 int new_dur;
2726
2727 ieee80211_handle_roc_started(roc);
2728
2729 new_dur = roc->duration -
2730 jiffies_to_msecs(tmp->hw_start_time +
2731 msecs_to_jiffies(
2732 tmp->duration) -
2733 j);
2734
2735 if (new_dur > 0) {
2736 /* add right after tmp */
2737 list_add(&roc->list, &tmp->list);
2738 } else {
2739 list_add_tail(&roc->list,
2740 &tmp->dependents);
2741 }
2742 queued = true;
2743 }
2744 } else if (del_timer_sync(&tmp->work.timer)) {
2745 unsigned long new_end;
2746
2747 /*
2748 * In the software ROC case, cancel the timer, if
2749 * that fails then the finish work is already
2750 * queued/pending and thus we queue the new ROC
2751 * normally, if that succeeds then we can extend
2752 * the timer duration and TX the frame (if any.)
2753 */
2754
2755 list_add_tail(&roc->list, &tmp->dependents);
2756 queued = true;
2757
2758 new_end = jiffies + msecs_to_jiffies(roc->duration);
2759
2760 /* ok, it was started & we canceled timer */
2761 if (time_after(new_end, tmp->work.timer.expires))
2762 mod_timer(&tmp->work.timer, new_end);
2763 else
2764 add_timer(&tmp->work.timer);
2765
2766 ieee80211_handle_roc_started(roc);
2767 }
2768 break;
2769 }
2770
2771 out_queue:
2772 if (!queued)
2773 list_add_tail(&roc->list, &local->roc_list);
2774
2775 /*
2776 * cookie is either the roc cookie (for normal roc)
2777 * or the SKB (for mgmt TX)
2778 */
2779 if (!txskb) {
2780 /* local->mtx protects this */
2781 local->roc_cookie_counter++;
2782 roc->cookie = local->roc_cookie_counter;
2783 /* wow, you wrapped 64 bits ... more likely a bug */
2784 if (WARN_ON(roc->cookie == 0)) {
2785 roc->cookie = 1;
2786 local->roc_cookie_counter++;
2787 }
2788 *cookie = roc->cookie;
2789 } else {
2790 *cookie = (unsigned long)txskb;
2791 }
2792
2793 return 0;
2794 }
2795
2796 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2797 struct wireless_dev *wdev,
2798 struct ieee80211_channel *chan,
2799 unsigned int duration,
2800 u64 *cookie)
2801 {
2802 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2803 struct ieee80211_local *local = sdata->local;
2804 int ret;
2805
2806 mutex_lock(&local->mtx);
2807 ret = ieee80211_start_roc_work(local, sdata, chan,
2808 duration, cookie, NULL,
2809 IEEE80211_ROC_TYPE_NORMAL);
2810 mutex_unlock(&local->mtx);
2811
2812 return ret;
2813 }
2814
2815 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2816 u64 cookie, bool mgmt_tx)
2817 {
2818 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2819 int ret;
2820
2821 mutex_lock(&local->mtx);
2822 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2823 struct ieee80211_roc_work *dep, *tmp2;
2824
2825 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2826 if (!mgmt_tx && dep->cookie != cookie)
2827 continue;
2828 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2829 continue;
2830 /* found dependent item -- just remove it */
2831 list_del(&dep->list);
2832 mutex_unlock(&local->mtx);
2833
2834 ieee80211_roc_notify_destroy(dep, true);
2835 return 0;
2836 }
2837
2838 if (!mgmt_tx && roc->cookie != cookie)
2839 continue;
2840 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2841 continue;
2842
2843 found = roc;
2844 break;
2845 }
2846
2847 if (!found) {
2848 mutex_unlock(&local->mtx);
2849 return -ENOENT;
2850 }
2851
2852 /*
2853 * We found the item to cancel, so do that. Note that it
2854 * may have dependents, which we also cancel (and send
2855 * the expired signal for.) Not doing so would be quite
2856 * tricky here, but we may need to fix it later.
2857 */
2858
2859 if (local->ops->remain_on_channel) {
2860 if (found->started) {
2861 ret = drv_cancel_remain_on_channel(local);
2862 if (WARN_ON_ONCE(ret)) {
2863 mutex_unlock(&local->mtx);
2864 return ret;
2865 }
2866 }
2867
2868 list_del(&found->list);
2869
2870 if (found->started)
2871 ieee80211_start_next_roc(local);
2872 mutex_unlock(&local->mtx);
2873
2874 ieee80211_roc_notify_destroy(found, true);
2875 } else {
2876 /* work may be pending so use it all the time */
2877 found->abort = true;
2878 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2879
2880 mutex_unlock(&local->mtx);
2881
2882 /* work will clean up etc */
2883 flush_delayed_work(&found->work);
2884 WARN_ON(!found->to_be_freed);
2885 kfree(found);
2886 }
2887
2888 return 0;
2889 }
2890
2891 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2892 struct wireless_dev *wdev,
2893 u64 cookie)
2894 {
2895 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2896 struct ieee80211_local *local = sdata->local;
2897
2898 return ieee80211_cancel_roc(local, cookie, false);
2899 }
2900
2901 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2902 struct net_device *dev,
2903 struct cfg80211_chan_def *chandef)
2904 {
2905 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2906 struct ieee80211_local *local = sdata->local;
2907 unsigned long timeout;
2908 int err;
2909
2910 mutex_lock(&local->mtx);
2911 if (!list_empty(&local->roc_list) || local->scanning) {
2912 err = -EBUSY;
2913 goto out_unlock;
2914 }
2915
2916 /* whatever, but channel contexts should not complain about that one */
2917 sdata->smps_mode = IEEE80211_SMPS_OFF;
2918 sdata->needed_rx_chains = local->rx_chains;
2919 sdata->radar_required = true;
2920
2921 err = ieee80211_vif_use_channel(sdata, chandef,
2922 IEEE80211_CHANCTX_SHARED);
2923 if (err)
2924 goto out_unlock;
2925
2926 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2927 ieee80211_queue_delayed_work(&sdata->local->hw,
2928 &sdata->dfs_cac_timer_work, timeout);
2929
2930 out_unlock:
2931 mutex_unlock(&local->mtx);
2932 return err;
2933 }
2934
2935 static struct cfg80211_beacon_data *
2936 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2937 {
2938 struct cfg80211_beacon_data *new_beacon;
2939 u8 *pos;
2940 int len;
2941
2942 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2943 beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2944 beacon->probe_resp_len;
2945
2946 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2947 if (!new_beacon)
2948 return NULL;
2949
2950 pos = (u8 *)(new_beacon + 1);
2951 if (beacon->head_len) {
2952 new_beacon->head_len = beacon->head_len;
2953 new_beacon->head = pos;
2954 memcpy(pos, beacon->head, beacon->head_len);
2955 pos += beacon->head_len;
2956 }
2957 if (beacon->tail_len) {
2958 new_beacon->tail_len = beacon->tail_len;
2959 new_beacon->tail = pos;
2960 memcpy(pos, beacon->tail, beacon->tail_len);
2961 pos += beacon->tail_len;
2962 }
2963 if (beacon->beacon_ies_len) {
2964 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2965 new_beacon->beacon_ies = pos;
2966 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2967 pos += beacon->beacon_ies_len;
2968 }
2969 if (beacon->proberesp_ies_len) {
2970 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2971 new_beacon->proberesp_ies = pos;
2972 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2973 pos += beacon->proberesp_ies_len;
2974 }
2975 if (beacon->assocresp_ies_len) {
2976 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2977 new_beacon->assocresp_ies = pos;
2978 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2979 pos += beacon->assocresp_ies_len;
2980 }
2981 if (beacon->probe_resp_len) {
2982 new_beacon->probe_resp_len = beacon->probe_resp_len;
2983 beacon->probe_resp = pos;
2984 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2985 pos += beacon->probe_resp_len;
2986 }
2987
2988 return new_beacon;
2989 }
2990
2991 void ieee80211_csa_finalize_work(struct work_struct *work)
2992 {
2993 struct ieee80211_sub_if_data *sdata =
2994 container_of(work, struct ieee80211_sub_if_data,
2995 csa_finalize_work);
2996 struct ieee80211_local *local = sdata->local;
2997 int err, changed = 0;
2998
2999 sdata_lock(sdata);
3000 /* AP might have been stopped while waiting for the lock. */
3001 if (!sdata->vif.csa_active)
3002 goto unlock;
3003
3004 if (!ieee80211_sdata_running(sdata))
3005 goto unlock;
3006
3007 sdata->radar_required = sdata->csa_radar_required;
3008 mutex_lock(&local->mtx);
3009 err = ieee80211_vif_change_channel(sdata, &changed);
3010 mutex_unlock(&local->mtx);
3011 if (WARN_ON(err < 0))
3012 goto unlock;
3013
3014 if (!local->use_chanctx) {
3015 local->_oper_chandef = sdata->csa_chandef;
3016 ieee80211_hw_config(local, 0);
3017 }
3018
3019 ieee80211_bss_info_change_notify(sdata, changed);
3020
3021 sdata->vif.csa_active = false;
3022 switch (sdata->vif.type) {
3023 case NL80211_IFTYPE_AP:
3024 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon);
3025 if (err < 0)
3026 goto unlock;
3027
3028 changed |= err;
3029 kfree(sdata->u.ap.next_beacon);
3030 sdata->u.ap.next_beacon = NULL;
3031
3032 ieee80211_bss_info_change_notify(sdata, err);
3033 break;
3034 case NL80211_IFTYPE_ADHOC:
3035 ieee80211_ibss_finish_csa(sdata);
3036 break;
3037 #ifdef CONFIG_MAC80211_MESH
3038 case NL80211_IFTYPE_MESH_POINT:
3039 err = ieee80211_mesh_finish_csa(sdata);
3040 if (err < 0)
3041 goto unlock;
3042 break;
3043 #endif
3044 default:
3045 WARN_ON(1);
3046 goto unlock;
3047 }
3048
3049 ieee80211_wake_queues_by_reason(&sdata->local->hw,
3050 IEEE80211_MAX_QUEUE_MAP,
3051 IEEE80211_QUEUE_STOP_REASON_CSA);
3052
3053 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3054
3055 unlock:
3056 sdata_unlock(sdata);
3057 }
3058
3059 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3060 struct cfg80211_csa_settings *params)
3061 {
3062 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3063 struct ieee80211_local *local = sdata->local;
3064 struct ieee80211_chanctx_conf *chanctx_conf;
3065 struct ieee80211_chanctx *chanctx;
3066 struct ieee80211_if_mesh __maybe_unused *ifmsh;
3067 int err, num_chanctx;
3068
3069 lockdep_assert_held(&sdata->wdev.mtx);
3070
3071 if (!list_empty(&local->roc_list) || local->scanning)
3072 return -EBUSY;
3073
3074 if (sdata->wdev.cac_started)
3075 return -EBUSY;
3076
3077 if (cfg80211_chandef_identical(&params->chandef,
3078 &sdata->vif.bss_conf.chandef))
3079 return -EINVAL;
3080
3081 rcu_read_lock();
3082 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3083 if (!chanctx_conf) {
3084 rcu_read_unlock();
3085 return -EBUSY;
3086 }
3087
3088 /* don't handle for multi-VIF cases */
3089 chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
3090 if (chanctx->refcount > 1) {
3091 rcu_read_unlock();
3092 return -EBUSY;
3093 }
3094 num_chanctx = 0;
3095 list_for_each_entry_rcu(chanctx, &local->chanctx_list, list)
3096 num_chanctx++;
3097 rcu_read_unlock();
3098
3099 if (num_chanctx > 1)
3100 return -EBUSY;
3101
3102 /* don't allow another channel switch if one is already active. */
3103 if (sdata->vif.csa_active)
3104 return -EBUSY;
3105
3106 switch (sdata->vif.type) {
3107 case NL80211_IFTYPE_AP:
3108 sdata->csa_counter_offset_beacon =
3109 params->counter_offset_beacon;
3110 sdata->csa_counter_offset_presp = params->counter_offset_presp;
3111 sdata->u.ap.next_beacon =
3112 cfg80211_beacon_dup(&params->beacon_after);
3113 if (!sdata->u.ap.next_beacon)
3114 return -ENOMEM;
3115
3116 err = ieee80211_assign_beacon(sdata, &params->beacon_csa);
3117 if (err < 0) {
3118 kfree(sdata->u.ap.next_beacon);
3119 return err;
3120 }
3121 break;
3122 case NL80211_IFTYPE_ADHOC:
3123 if (!sdata->vif.bss_conf.ibss_joined)
3124 return -EINVAL;
3125
3126 if (params->chandef.width != sdata->u.ibss.chandef.width)
3127 return -EINVAL;
3128
3129 switch (params->chandef.width) {
3130 case NL80211_CHAN_WIDTH_40:
3131 if (cfg80211_get_chandef_type(&params->chandef) !=
3132 cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3133 return -EINVAL;
3134 case NL80211_CHAN_WIDTH_5:
3135 case NL80211_CHAN_WIDTH_10:
3136 case NL80211_CHAN_WIDTH_20_NOHT:
3137 case NL80211_CHAN_WIDTH_20:
3138 break;
3139 default:
3140 return -EINVAL;
3141 }
3142
3143 /* changes into another band are not supported */
3144 if (sdata->u.ibss.chandef.chan->band !=
3145 params->chandef.chan->band)
3146 return -EINVAL;
3147
3148 err = ieee80211_ibss_csa_beacon(sdata, params);
3149 if (err < 0)
3150 return err;
3151 break;
3152 #ifdef CONFIG_MAC80211_MESH
3153 case NL80211_IFTYPE_MESH_POINT:
3154 ifmsh = &sdata->u.mesh;
3155
3156 if (!ifmsh->mesh_id)
3157 return -EINVAL;
3158
3159 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3160 return -EINVAL;
3161
3162 /* changes into another band are not supported */
3163 if (sdata->vif.bss_conf.chandef.chan->band !=
3164 params->chandef.chan->band)
3165 return -EINVAL;
3166
3167 ifmsh->chsw_init = true;
3168 if (!ifmsh->pre_value)
3169 ifmsh->pre_value = 1;
3170 else
3171 ifmsh->pre_value++;
3172
3173 err = ieee80211_mesh_csa_beacon(sdata, params, true);
3174 if (err < 0) {
3175 ifmsh->chsw_init = false;
3176 return err;
3177 }
3178 break;
3179 #endif
3180 default:
3181 return -EOPNOTSUPP;
3182 }
3183
3184 sdata->csa_radar_required = params->radar_required;
3185
3186 if (params->block_tx)
3187 ieee80211_stop_queues_by_reason(&local->hw,
3188 IEEE80211_MAX_QUEUE_MAP,
3189 IEEE80211_QUEUE_STOP_REASON_CSA);
3190
3191 sdata->csa_chandef = params->chandef;
3192 sdata->vif.csa_active = true;
3193
3194 ieee80211_bss_info_change_notify(sdata, err);
3195 drv_channel_switch_beacon(sdata, &params->chandef);
3196
3197 return 0;
3198 }
3199
3200 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3201 struct cfg80211_mgmt_tx_params *params,
3202 u64 *cookie)
3203 {
3204 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3205 struct ieee80211_local *local = sdata->local;
3206 struct sk_buff *skb;
3207 struct sta_info *sta;
3208 const struct ieee80211_mgmt *mgmt = (void *)params->buf;
3209 bool need_offchan = false;
3210 u32 flags;
3211 int ret;
3212
3213 if (params->dont_wait_for_ack)
3214 flags = IEEE80211_TX_CTL_NO_ACK;
3215 else
3216 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
3217 IEEE80211_TX_CTL_REQ_TX_STATUS;
3218
3219 if (params->no_cck)
3220 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
3221
3222 switch (sdata->vif.type) {
3223 case NL80211_IFTYPE_ADHOC:
3224 if (!sdata->vif.bss_conf.ibss_joined)
3225 need_offchan = true;
3226 /* fall through */
3227 #ifdef CONFIG_MAC80211_MESH
3228 case NL80211_IFTYPE_MESH_POINT:
3229 if (ieee80211_vif_is_mesh(&sdata->vif) &&
3230 !sdata->u.mesh.mesh_id_len)
3231 need_offchan = true;
3232 /* fall through */
3233 #endif
3234 case NL80211_IFTYPE_AP:
3235 case NL80211_IFTYPE_AP_VLAN:
3236 case NL80211_IFTYPE_P2P_GO:
3237 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
3238 !ieee80211_vif_is_mesh(&sdata->vif) &&
3239 !rcu_access_pointer(sdata->bss->beacon))
3240 need_offchan = true;
3241 if (!ieee80211_is_action(mgmt->frame_control) ||
3242 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC ||
3243 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED ||
3244 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT)
3245 break;
3246 rcu_read_lock();
3247 sta = sta_info_get(sdata, mgmt->da);
3248 rcu_read_unlock();
3249 if (!sta)
3250 return -ENOLINK;
3251 break;
3252 case NL80211_IFTYPE_STATION:
3253 case NL80211_IFTYPE_P2P_CLIENT:
3254 if (!sdata->u.mgd.associated)
3255 need_offchan = true;
3256 break;
3257 case NL80211_IFTYPE_P2P_DEVICE:
3258 need_offchan = true;
3259 break;
3260 default:
3261 return -EOPNOTSUPP;
3262 }
3263
3264 /* configurations requiring offchan cannot work if no channel has been
3265 * specified
3266 */
3267 if (need_offchan && !params->chan)
3268 return -EINVAL;
3269
3270 mutex_lock(&local->mtx);
3271
3272 /* Check if the operating channel is the requested channel */
3273 if (!need_offchan) {
3274 struct ieee80211_chanctx_conf *chanctx_conf;
3275
3276 rcu_read_lock();
3277 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3278
3279 if (chanctx_conf) {
3280 need_offchan = params->chan &&
3281 (params->chan !=
3282 chanctx_conf->def.chan);
3283 } else if (!params->chan) {
3284 ret = -EINVAL;
3285 rcu_read_unlock();
3286 goto out_unlock;
3287 } else {
3288 need_offchan = true;
3289 }
3290 rcu_read_unlock();
3291 }
3292
3293 if (need_offchan && !params->offchan) {
3294 ret = -EBUSY;
3295 goto out_unlock;
3296 }
3297
3298 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len);
3299 if (!skb) {
3300 ret = -ENOMEM;
3301 goto out_unlock;
3302 }
3303 skb_reserve(skb, local->hw.extra_tx_headroom);
3304
3305 memcpy(skb_put(skb, params->len), params->buf, params->len);
3306
3307 IEEE80211_SKB_CB(skb)->flags = flags;
3308
3309 skb->dev = sdata->dev;
3310
3311 if (!need_offchan) {
3312 *cookie = (unsigned long) skb;
3313 ieee80211_tx_skb(sdata, skb);
3314 ret = 0;
3315 goto out_unlock;
3316 }
3317
3318 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
3319 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
3320 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
3321 IEEE80211_SKB_CB(skb)->hw_queue =
3322 local->hw.offchannel_tx_hw_queue;
3323
3324 /* This will handle all kinds of coalescing and immediate TX */
3325 ret = ieee80211_start_roc_work(local, sdata, params->chan,
3326 params->wait, cookie, skb,
3327 IEEE80211_ROC_TYPE_MGMT_TX);
3328 if (ret)
3329 kfree_skb(skb);
3330 out_unlock:
3331 mutex_unlock(&local->mtx);
3332 return ret;
3333 }
3334
3335 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
3336 struct wireless_dev *wdev,
3337 u64 cookie)
3338 {
3339 struct ieee80211_local *local = wiphy_priv(wiphy);
3340
3341 return ieee80211_cancel_roc(local, cookie, true);
3342 }
3343
3344 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3345 struct wireless_dev *wdev,
3346 u16 frame_type, bool reg)
3347 {
3348 struct ieee80211_local *local = wiphy_priv(wiphy);
3349
3350 switch (frame_type) {
3351 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3352 if (reg)
3353 local->probe_req_reg++;
3354 else
3355 local->probe_req_reg--;
3356
3357 if (!local->open_count)
3358 break;
3359
3360 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
3361 break;
3362 default:
3363 break;
3364 }
3365 }
3366
3367 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3368 {
3369 struct ieee80211_local *local = wiphy_priv(wiphy);
3370
3371 if (local->started)
3372 return -EOPNOTSUPP;
3373
3374 return drv_set_antenna(local, tx_ant, rx_ant);
3375 }
3376
3377 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3378 {
3379 struct ieee80211_local *local = wiphy_priv(wiphy);
3380
3381 return drv_get_antenna(local, tx_ant, rx_ant);
3382 }
3383
3384 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
3385 {
3386 struct ieee80211_local *local = wiphy_priv(wiphy);
3387
3388 return drv_set_ringparam(local, tx, rx);
3389 }
3390
3391 static void ieee80211_get_ringparam(struct wiphy *wiphy,
3392 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
3393 {
3394 struct ieee80211_local *local = wiphy_priv(wiphy);
3395
3396 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
3397 }
3398
3399 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3400 struct net_device *dev,
3401 struct cfg80211_gtk_rekey_data *data)
3402 {
3403 struct ieee80211_local *local = wiphy_priv(wiphy);
3404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3405
3406 if (!local->ops->set_rekey_data)
3407 return -EOPNOTSUPP;
3408
3409 drv_set_rekey_data(local, sdata, data);
3410
3411 return 0;
3412 }
3413
3414 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
3415 {
3416 u8 *pos = (void *)skb_put(skb, 7);
3417
3418 *pos++ = WLAN_EID_EXT_CAPABILITY;
3419 *pos++ = 5; /* len */
3420 *pos++ = 0x0;
3421 *pos++ = 0x0;
3422 *pos++ = 0x0;
3423 *pos++ = 0x0;
3424 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
3425 }
3426
3427 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
3428 {
3429 struct ieee80211_local *local = sdata->local;
3430 u16 capab;
3431
3432 capab = 0;
3433 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
3434 return capab;
3435
3436 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
3437 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
3438 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
3439 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
3440
3441 return capab;
3442 }
3443
3444 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
3445 u8 *peer, u8 *bssid)
3446 {
3447 struct ieee80211_tdls_lnkie *lnkid;
3448
3449 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
3450
3451 lnkid->ie_type = WLAN_EID_LINK_ID;
3452 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
3453
3454 memcpy(lnkid->bssid, bssid, ETH_ALEN);
3455 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
3456 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
3457 }
3458
3459 static int
3460 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
3461 u8 *peer, u8 action_code, u8 dialog_token,
3462 u16 status_code, struct sk_buff *skb)
3463 {
3464 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3465 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3466 struct ieee80211_tdls_data *tf;
3467
3468 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
3469
3470 memcpy(tf->da, peer, ETH_ALEN);
3471 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3472 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3473 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3474
3475 switch (action_code) {
3476 case WLAN_TDLS_SETUP_REQUEST:
3477 tf->category = WLAN_CATEGORY_TDLS;
3478 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3479
3480 skb_put(skb, sizeof(tf->u.setup_req));
3481 tf->u.setup_req.dialog_token = dialog_token;
3482 tf->u.setup_req.capability =
3483 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3484
3485 ieee80211_add_srates_ie(sdata, skb, false, band);
3486 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3487 ieee80211_tdls_add_ext_capab(skb);
3488 break;
3489 case WLAN_TDLS_SETUP_RESPONSE:
3490 tf->category = WLAN_CATEGORY_TDLS;
3491 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3492
3493 skb_put(skb, sizeof(tf->u.setup_resp));
3494 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3495 tf->u.setup_resp.dialog_token = dialog_token;
3496 tf->u.setup_resp.capability =
3497 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3498
3499 ieee80211_add_srates_ie(sdata, skb, false, band);
3500 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3501 ieee80211_tdls_add_ext_capab(skb);
3502 break;
3503 case WLAN_TDLS_SETUP_CONFIRM:
3504 tf->category = WLAN_CATEGORY_TDLS;
3505 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3506
3507 skb_put(skb, sizeof(tf->u.setup_cfm));
3508 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3509 tf->u.setup_cfm.dialog_token = dialog_token;
3510 break;
3511 case WLAN_TDLS_TEARDOWN:
3512 tf->category = WLAN_CATEGORY_TDLS;
3513 tf->action_code = WLAN_TDLS_TEARDOWN;
3514
3515 skb_put(skb, sizeof(tf->u.teardown));
3516 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3517 break;
3518 case WLAN_TDLS_DISCOVERY_REQUEST:
3519 tf->category = WLAN_CATEGORY_TDLS;
3520 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3521
3522 skb_put(skb, sizeof(tf->u.discover_req));
3523 tf->u.discover_req.dialog_token = dialog_token;
3524 break;
3525 default:
3526 return -EINVAL;
3527 }
3528
3529 return 0;
3530 }
3531
3532 static int
3533 ieee80211_prep_tdls_direct(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_mgmt *mgmt;
3540
3541 mgmt = (void *)skb_put(skb, 24);
3542 memset(mgmt, 0, 24);
3543 memcpy(mgmt->da, peer, ETH_ALEN);
3544 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3545 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3546
3547 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3548 IEEE80211_STYPE_ACTION);
3549
3550 switch (action_code) {
3551 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3552 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3553 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3554 mgmt->u.action.u.tdls_discover_resp.action_code =
3555 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3556 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3557 dialog_token;
3558 mgmt->u.action.u.tdls_discover_resp.capability =
3559 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3560
3561 ieee80211_add_srates_ie(sdata, skb, false, band);
3562 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3563 ieee80211_tdls_add_ext_capab(skb);
3564 break;
3565 default:
3566 return -EINVAL;
3567 }
3568
3569 return 0;
3570 }
3571
3572 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3573 u8 *peer, u8 action_code, u8 dialog_token,
3574 u16 status_code, const u8 *extra_ies,
3575 size_t extra_ies_len)
3576 {
3577 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3578 struct ieee80211_local *local = sdata->local;
3579 struct sk_buff *skb = NULL;
3580 bool send_direct;
3581 int ret;
3582
3583 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3584 return -ENOTSUPP;
3585
3586 /* make sure we are in managed mode, and associated */
3587 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3588 !sdata->u.mgd.associated)
3589 return -EINVAL;
3590
3591 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3592 action_code, peer);
3593
3594 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3595 max(sizeof(struct ieee80211_mgmt),
3596 sizeof(struct ieee80211_tdls_data)) +
3597 50 + /* supported rates */
3598 7 + /* ext capab */
3599 extra_ies_len +
3600 sizeof(struct ieee80211_tdls_lnkie));
3601 if (!skb)
3602 return -ENOMEM;
3603
3604 skb_reserve(skb, local->hw.extra_tx_headroom);
3605
3606 switch (action_code) {
3607 case WLAN_TDLS_SETUP_REQUEST:
3608 case WLAN_TDLS_SETUP_RESPONSE:
3609 case WLAN_TDLS_SETUP_CONFIRM:
3610 case WLAN_TDLS_TEARDOWN:
3611 case WLAN_TDLS_DISCOVERY_REQUEST:
3612 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3613 action_code, dialog_token,
3614 status_code, skb);
3615 send_direct = false;
3616 break;
3617 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3618 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3619 dialog_token, status_code,
3620 skb);
3621 send_direct = true;
3622 break;
3623 default:
3624 ret = -ENOTSUPP;
3625 break;
3626 }
3627
3628 if (ret < 0)
3629 goto fail;
3630
3631 if (extra_ies_len)
3632 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3633
3634 /* the TDLS link IE is always added last */
3635 switch (action_code) {
3636 case WLAN_TDLS_SETUP_REQUEST:
3637 case WLAN_TDLS_SETUP_CONFIRM:
3638 case WLAN_TDLS_TEARDOWN:
3639 case WLAN_TDLS_DISCOVERY_REQUEST:
3640 /* we are the initiator */
3641 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3642 sdata->u.mgd.bssid);
3643 break;
3644 case WLAN_TDLS_SETUP_RESPONSE:
3645 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3646 /* we are the responder */
3647 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3648 sdata->u.mgd.bssid);
3649 break;
3650 default:
3651 ret = -ENOTSUPP;
3652 goto fail;
3653 }
3654
3655 if (send_direct) {
3656 ieee80211_tx_skb(sdata, skb);
3657 return 0;
3658 }
3659
3660 /*
3661 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3662 * we should default to AC_VI.
3663 */
3664 switch (action_code) {
3665 case WLAN_TDLS_SETUP_REQUEST:
3666 case WLAN_TDLS_SETUP_RESPONSE:
3667 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3668 skb->priority = 2;
3669 break;
3670 default:
3671 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3672 skb->priority = 5;
3673 break;
3674 }
3675
3676 /* disable bottom halves when entering the Tx path */
3677 local_bh_disable();
3678 ret = ieee80211_subif_start_xmit(skb, dev);
3679 local_bh_enable();
3680
3681 return ret;
3682
3683 fail:
3684 dev_kfree_skb(skb);
3685 return ret;
3686 }
3687
3688 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3689 u8 *peer, enum nl80211_tdls_operation oper)
3690 {
3691 struct sta_info *sta;
3692 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3693
3694 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3695 return -ENOTSUPP;
3696
3697 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3698 return -EINVAL;
3699
3700 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3701
3702 switch (oper) {
3703 case NL80211_TDLS_ENABLE_LINK:
3704 rcu_read_lock();
3705 sta = sta_info_get(sdata, peer);
3706 if (!sta) {
3707 rcu_read_unlock();
3708 return -ENOLINK;
3709 }
3710
3711 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3712 rcu_read_unlock();
3713 break;
3714 case NL80211_TDLS_DISABLE_LINK:
3715 return sta_info_destroy_addr(sdata, peer);
3716 case NL80211_TDLS_TEARDOWN:
3717 case NL80211_TDLS_SETUP:
3718 case NL80211_TDLS_DISCOVERY_REQ:
3719 /* We don't support in-driver setup/teardown/discovery */
3720 return -ENOTSUPP;
3721 default:
3722 return -ENOTSUPP;
3723 }
3724
3725 return 0;
3726 }
3727
3728 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3729 const u8 *peer, u64 *cookie)
3730 {
3731 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3732 struct ieee80211_local *local = sdata->local;
3733 struct ieee80211_qos_hdr *nullfunc;
3734 struct sk_buff *skb;
3735 int size = sizeof(*nullfunc);
3736 __le16 fc;
3737 bool qos;
3738 struct ieee80211_tx_info *info;
3739 struct sta_info *sta;
3740 struct ieee80211_chanctx_conf *chanctx_conf;
3741 enum ieee80211_band band;
3742
3743 rcu_read_lock();
3744 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3745 if (WARN_ON(!chanctx_conf)) {
3746 rcu_read_unlock();
3747 return -EINVAL;
3748 }
3749 band = chanctx_conf->def.chan->band;
3750 sta = sta_info_get_bss(sdata, peer);
3751 if (sta) {
3752 qos = test_sta_flag(sta, WLAN_STA_WME);
3753 } else {
3754 rcu_read_unlock();
3755 return -ENOLINK;
3756 }
3757
3758 if (qos) {
3759 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3760 IEEE80211_STYPE_QOS_NULLFUNC |
3761 IEEE80211_FCTL_FROMDS);
3762 } else {
3763 size -= 2;
3764 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3765 IEEE80211_STYPE_NULLFUNC |
3766 IEEE80211_FCTL_FROMDS);
3767 }
3768
3769 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3770 if (!skb) {
3771 rcu_read_unlock();
3772 return -ENOMEM;
3773 }
3774
3775 skb->dev = dev;
3776
3777 skb_reserve(skb, local->hw.extra_tx_headroom);
3778
3779 nullfunc = (void *) skb_put(skb, size);
3780 nullfunc->frame_control = fc;
3781 nullfunc->duration_id = 0;
3782 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3783 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3784 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3785 nullfunc->seq_ctrl = 0;
3786
3787 info = IEEE80211_SKB_CB(skb);
3788
3789 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3790 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3791
3792 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3793 skb->priority = 7;
3794 if (qos)
3795 nullfunc->qos_ctrl = cpu_to_le16(7);
3796
3797 local_bh_disable();
3798 ieee80211_xmit(sdata, skb, band);
3799 local_bh_enable();
3800 rcu_read_unlock();
3801
3802 *cookie = (unsigned long) skb;
3803 return 0;
3804 }
3805
3806 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3807 struct wireless_dev *wdev,
3808 struct cfg80211_chan_def *chandef)
3809 {
3810 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3811 struct ieee80211_local *local = wiphy_priv(wiphy);
3812 struct ieee80211_chanctx_conf *chanctx_conf;
3813 int ret = -ENODATA;
3814
3815 rcu_read_lock();
3816 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3817 if (chanctx_conf) {
3818 *chandef = chanctx_conf->def;
3819 ret = 0;
3820 } else if (local->open_count > 0 &&
3821 local->open_count == local->monitors &&
3822 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3823 if (local->use_chanctx)
3824 *chandef = local->monitor_chandef;
3825 else
3826 *chandef = local->_oper_chandef;
3827 ret = 0;
3828 }
3829 rcu_read_unlock();
3830
3831 return ret;
3832 }
3833
3834 #ifdef CONFIG_PM
3835 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3836 {
3837 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3838 }
3839 #endif
3840
3841 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3842 struct net_device *dev,
3843 struct cfg80211_qos_map *qos_map)
3844 {
3845 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3846 struct mac80211_qos_map *new_qos_map, *old_qos_map;
3847
3848 if (qos_map) {
3849 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3850 if (!new_qos_map)
3851 return -ENOMEM;
3852 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3853 } else {
3854 /* A NULL qos_map was passed to disable QoS mapping */
3855 new_qos_map = NULL;
3856 }
3857
3858 old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3859 rcu_assign_pointer(sdata->qos_map, new_qos_map);
3860 if (old_qos_map)
3861 kfree_rcu(old_qos_map, rcu_head);
3862
3863 return 0;
3864 }
3865
3866 struct cfg80211_ops mac80211_config_ops = {
3867 .add_virtual_intf = ieee80211_add_iface,
3868 .del_virtual_intf = ieee80211_del_iface,
3869 .change_virtual_intf = ieee80211_change_iface,
3870 .start_p2p_device = ieee80211_start_p2p_device,
3871 .stop_p2p_device = ieee80211_stop_p2p_device,
3872 .add_key = ieee80211_add_key,
3873 .del_key = ieee80211_del_key,
3874 .get_key = ieee80211_get_key,
3875 .set_default_key = ieee80211_config_default_key,
3876 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3877 .start_ap = ieee80211_start_ap,
3878 .change_beacon = ieee80211_change_beacon,
3879 .stop_ap = ieee80211_stop_ap,
3880 .add_station = ieee80211_add_station,
3881 .del_station = ieee80211_del_station,
3882 .change_station = ieee80211_change_station,
3883 .get_station = ieee80211_get_station,
3884 .dump_station = ieee80211_dump_station,
3885 .dump_survey = ieee80211_dump_survey,
3886 #ifdef CONFIG_MAC80211_MESH
3887 .add_mpath = ieee80211_add_mpath,
3888 .del_mpath = ieee80211_del_mpath,
3889 .change_mpath = ieee80211_change_mpath,
3890 .get_mpath = ieee80211_get_mpath,
3891 .dump_mpath = ieee80211_dump_mpath,
3892 .update_mesh_config = ieee80211_update_mesh_config,
3893 .get_mesh_config = ieee80211_get_mesh_config,
3894 .join_mesh = ieee80211_join_mesh,
3895 .leave_mesh = ieee80211_leave_mesh,
3896 #endif
3897 .change_bss = ieee80211_change_bss,
3898 .set_txq_params = ieee80211_set_txq_params,
3899 .set_monitor_channel = ieee80211_set_monitor_channel,
3900 .suspend = ieee80211_suspend,
3901 .resume = ieee80211_resume,
3902 .scan = ieee80211_scan,
3903 .sched_scan_start = ieee80211_sched_scan_start,
3904 .sched_scan_stop = ieee80211_sched_scan_stop,
3905 .auth = ieee80211_auth,
3906 .assoc = ieee80211_assoc,
3907 .deauth = ieee80211_deauth,
3908 .disassoc = ieee80211_disassoc,
3909 .join_ibss = ieee80211_join_ibss,
3910 .leave_ibss = ieee80211_leave_ibss,
3911 .set_mcast_rate = ieee80211_set_mcast_rate,
3912 .set_wiphy_params = ieee80211_set_wiphy_params,
3913 .set_tx_power = ieee80211_set_tx_power,
3914 .get_tx_power = ieee80211_get_tx_power,
3915 .set_wds_peer = ieee80211_set_wds_peer,
3916 .rfkill_poll = ieee80211_rfkill_poll,
3917 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3918 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3919 .set_power_mgmt = ieee80211_set_power_mgmt,
3920 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3921 .remain_on_channel = ieee80211_remain_on_channel,
3922 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3923 .mgmt_tx = ieee80211_mgmt_tx,
3924 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3925 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3926 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3927 .set_antenna = ieee80211_set_antenna,
3928 .get_antenna = ieee80211_get_antenna,
3929 .set_ringparam = ieee80211_set_ringparam,
3930 .get_ringparam = ieee80211_get_ringparam,
3931 .set_rekey_data = ieee80211_set_rekey_data,
3932 .tdls_oper = ieee80211_tdls_oper,
3933 .tdls_mgmt = ieee80211_tdls_mgmt,
3934 .probe_client = ieee80211_probe_client,
3935 .set_noack_map = ieee80211_set_noack_map,
3936 #ifdef CONFIG_PM
3937 .set_wakeup = ieee80211_set_wakeup,
3938 #endif
3939 .get_et_sset_count = ieee80211_get_et_sset_count,
3940 .get_et_stats = ieee80211_get_et_stats,
3941 .get_et_strings = ieee80211_get_et_strings,
3942 .get_channel = ieee80211_cfg_get_channel,
3943 .start_radar_detection = ieee80211_start_radar_detection,
3944 .channel_switch = ieee80211_channel_switch,
3945 .set_qos_map = ieee80211_set_qos_map,
3946 };
Linux kernel - Deliverables
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