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mac80211: flush keys when stopping AP
[mirror_ubuntu-artful-kernel.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <linux/if_ether.h>
16 #include <net/cfg80211.h>
17 #include "ieee80211_i.h"
18 #include "driver-ops.h"
19 #include "cfg.h"
20 #include "rate.h"
21 #include "mesh.h"
22
23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
24 const char *name,
25 enum nl80211_iftype type,
26 u32 *flags,
27 struct vif_params *params)
28 {
29 struct ieee80211_local *local = wiphy_priv(wiphy);
30 struct wireless_dev *wdev;
31 struct ieee80211_sub_if_data *sdata;
32 int err;
33
34 err = ieee80211_if_add(local, name, &wdev, type, params);
35 if (err)
36 return ERR_PTR(err);
37
38 if (type == NL80211_IFTYPE_MONITOR && flags) {
39 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
40 sdata->u.mntr_flags = *flags;
41 }
42
43 return wdev;
44 }
45
46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
47 {
48 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
49
50 return 0;
51 }
52
53 static int ieee80211_change_iface(struct wiphy *wiphy,
54 struct net_device *dev,
55 enum nl80211_iftype type, u32 *flags,
56 struct vif_params *params)
57 {
58 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
59 int ret;
60
61 ret = ieee80211_if_change_type(sdata, type);
62 if (ret)
63 return ret;
64
65 if (type == NL80211_IFTYPE_AP_VLAN &&
66 params && params->use_4addr == 0)
67 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
68 else if (type == NL80211_IFTYPE_STATION &&
69 params && params->use_4addr >= 0)
70 sdata->u.mgd.use_4addr = params->use_4addr;
71
72 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
73 struct ieee80211_local *local = sdata->local;
74
75 if (ieee80211_sdata_running(sdata)) {
76 /*
77 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
78 * changed while the interface is up.
79 * Else we would need to add a lot of cruft
80 * to update everything:
81 * cooked_mntrs, monitor and all fif_* counters
82 * reconfigure hardware
83 */
84 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
85 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
86 return -EBUSY;
87
88 ieee80211_adjust_monitor_flags(sdata, -1);
89 sdata->u.mntr_flags = *flags;
90 ieee80211_adjust_monitor_flags(sdata, 1);
91
92 ieee80211_configure_filter(local);
93 } else {
94 /*
95 * Because the interface is down, ieee80211_do_stop
96 * and ieee80211_do_open take care of "everything"
97 * mentioned in the comment above.
98 */
99 sdata->u.mntr_flags = *flags;
100 }
101 }
102
103 return 0;
104 }
105
106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
107 struct wireless_dev *wdev)
108 {
109 return ieee80211_do_open(wdev, true);
110 }
111
112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
113 struct wireless_dev *wdev)
114 {
115 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
116 }
117
118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
119 struct net_device *dev,
120 u16 noack_map)
121 {
122 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
123
124 sdata->noack_map = noack_map;
125 return 0;
126 }
127
128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
129 u8 key_idx, bool pairwise, const u8 *mac_addr,
130 struct key_params *params)
131 {
132 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
133 struct sta_info *sta = NULL;
134 struct ieee80211_key *key;
135 int err;
136
137 if (!ieee80211_sdata_running(sdata))
138 return -ENETDOWN;
139
140 /* reject WEP and TKIP keys if WEP failed to initialize */
141 switch (params->cipher) {
142 case WLAN_CIPHER_SUITE_WEP40:
143 case WLAN_CIPHER_SUITE_TKIP:
144 case WLAN_CIPHER_SUITE_WEP104:
145 if (IS_ERR(sdata->local->wep_tx_tfm))
146 return -EINVAL;
147 break;
148 default:
149 break;
150 }
151
152 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
153 params->key, params->seq_len, params->seq);
154 if (IS_ERR(key))
155 return PTR_ERR(key);
156
157 if (pairwise)
158 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
159
160 mutex_lock(&sdata->local->sta_mtx);
161
162 if (mac_addr) {
163 if (ieee80211_vif_is_mesh(&sdata->vif))
164 sta = sta_info_get(sdata, mac_addr);
165 else
166 sta = sta_info_get_bss(sdata, mac_addr);
167 /*
168 * The ASSOC test makes sure the driver is ready to
169 * receive the key. When wpa_supplicant has roamed
170 * using FT, it attempts to set the key before
171 * association has completed, this rejects that attempt
172 * so it will set the key again after assocation.
173 *
174 * TODO: accept the key if we have a station entry and
175 * add it to the device after the station.
176 */
177 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
178 ieee80211_key_free(sdata->local, key);
179 err = -ENOENT;
180 goto out_unlock;
181 }
182 }
183
184 switch (sdata->vif.type) {
185 case NL80211_IFTYPE_STATION:
186 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
187 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
188 break;
189 case NL80211_IFTYPE_AP:
190 case NL80211_IFTYPE_AP_VLAN:
191 /* Keys without a station are used for TX only */
192 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
193 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
194 break;
195 case NL80211_IFTYPE_ADHOC:
196 /* no MFP (yet) */
197 break;
198 case NL80211_IFTYPE_MESH_POINT:
199 #ifdef CONFIG_MAC80211_MESH
200 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
201 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
202 break;
203 #endif
204 case NL80211_IFTYPE_WDS:
205 case NL80211_IFTYPE_MONITOR:
206 case NL80211_IFTYPE_P2P_DEVICE:
207 case NL80211_IFTYPE_UNSPECIFIED:
208 case NUM_NL80211_IFTYPES:
209 case NL80211_IFTYPE_P2P_CLIENT:
210 case NL80211_IFTYPE_P2P_GO:
211 /* shouldn't happen */
212 WARN_ON_ONCE(1);
213 break;
214 }
215
216 err = ieee80211_key_link(key, sdata, sta);
217 if (err)
218 ieee80211_key_free(sdata->local, key);
219
220 out_unlock:
221 mutex_unlock(&sdata->local->sta_mtx);
222
223 return err;
224 }
225
226 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
227 u8 key_idx, bool pairwise, const u8 *mac_addr)
228 {
229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
230 struct ieee80211_local *local = sdata->local;
231 struct sta_info *sta;
232 struct ieee80211_key *key = NULL;
233 int ret;
234
235 mutex_lock(&local->sta_mtx);
236 mutex_lock(&local->key_mtx);
237
238 if (mac_addr) {
239 ret = -ENOENT;
240
241 sta = sta_info_get_bss(sdata, mac_addr);
242 if (!sta)
243 goto out_unlock;
244
245 if (pairwise)
246 key = key_mtx_dereference(local, sta->ptk);
247 else
248 key = key_mtx_dereference(local, sta->gtk[key_idx]);
249 } else
250 key = key_mtx_dereference(local, sdata->keys[key_idx]);
251
252 if (!key) {
253 ret = -ENOENT;
254 goto out_unlock;
255 }
256
257 __ieee80211_key_free(key, true);
258
259 ret = 0;
260 out_unlock:
261 mutex_unlock(&local->key_mtx);
262 mutex_unlock(&local->sta_mtx);
263
264 return ret;
265 }
266
267 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
268 u8 key_idx, bool pairwise, const u8 *mac_addr,
269 void *cookie,
270 void (*callback)(void *cookie,
271 struct key_params *params))
272 {
273 struct ieee80211_sub_if_data *sdata;
274 struct sta_info *sta = NULL;
275 u8 seq[6] = {0};
276 struct key_params params;
277 struct ieee80211_key *key = NULL;
278 u64 pn64;
279 u32 iv32;
280 u16 iv16;
281 int err = -ENOENT;
282
283 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
284
285 rcu_read_lock();
286
287 if (mac_addr) {
288 sta = sta_info_get_bss(sdata, mac_addr);
289 if (!sta)
290 goto out;
291
292 if (pairwise)
293 key = rcu_dereference(sta->ptk);
294 else if (key_idx < NUM_DEFAULT_KEYS)
295 key = rcu_dereference(sta->gtk[key_idx]);
296 } else
297 key = rcu_dereference(sdata->keys[key_idx]);
298
299 if (!key)
300 goto out;
301
302 memset(&params, 0, sizeof(params));
303
304 params.cipher = key->conf.cipher;
305
306 switch (key->conf.cipher) {
307 case WLAN_CIPHER_SUITE_TKIP:
308 iv32 = key->u.tkip.tx.iv32;
309 iv16 = key->u.tkip.tx.iv16;
310
311 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
312 drv_get_tkip_seq(sdata->local,
313 key->conf.hw_key_idx,
314 &iv32, &iv16);
315
316 seq[0] = iv16 & 0xff;
317 seq[1] = (iv16 >> 8) & 0xff;
318 seq[2] = iv32 & 0xff;
319 seq[3] = (iv32 >> 8) & 0xff;
320 seq[4] = (iv32 >> 16) & 0xff;
321 seq[5] = (iv32 >> 24) & 0xff;
322 params.seq = seq;
323 params.seq_len = 6;
324 break;
325 case WLAN_CIPHER_SUITE_CCMP:
326 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
327 seq[0] = pn64;
328 seq[1] = pn64 >> 8;
329 seq[2] = pn64 >> 16;
330 seq[3] = pn64 >> 24;
331 seq[4] = pn64 >> 32;
332 seq[5] = pn64 >> 40;
333 params.seq = seq;
334 params.seq_len = 6;
335 break;
336 case WLAN_CIPHER_SUITE_AES_CMAC:
337 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
338 seq[0] = pn64;
339 seq[1] = pn64 >> 8;
340 seq[2] = pn64 >> 16;
341 seq[3] = pn64 >> 24;
342 seq[4] = pn64 >> 32;
343 seq[5] = pn64 >> 40;
344 params.seq = seq;
345 params.seq_len = 6;
346 break;
347 }
348
349 params.key = key->conf.key;
350 params.key_len = key->conf.keylen;
351
352 callback(cookie, &params);
353 err = 0;
354
355 out:
356 rcu_read_unlock();
357 return err;
358 }
359
360 static int ieee80211_config_default_key(struct wiphy *wiphy,
361 struct net_device *dev,
362 u8 key_idx, bool uni,
363 bool multi)
364 {
365 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
366
367 ieee80211_set_default_key(sdata, key_idx, uni, multi);
368
369 return 0;
370 }
371
372 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
373 struct net_device *dev,
374 u8 key_idx)
375 {
376 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
377
378 ieee80211_set_default_mgmt_key(sdata, key_idx);
379
380 return 0;
381 }
382
383 void sta_set_rate_info_tx(struct sta_info *sta,
384 const struct ieee80211_tx_rate *rate,
385 struct rate_info *rinfo)
386 {
387 rinfo->flags = 0;
388 if (rate->flags & IEEE80211_TX_RC_MCS) {
389 rinfo->flags |= RATE_INFO_FLAGS_MCS;
390 rinfo->mcs = rate->idx;
391 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
392 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
393 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
394 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
395 } else {
396 struct ieee80211_supported_band *sband;
397 sband = sta->local->hw.wiphy->bands[
398 ieee80211_get_sdata_band(sta->sdata)];
399 rinfo->legacy = sband->bitrates[rate->idx].bitrate;
400 }
401 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
402 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
403 if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
404 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
405 if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
406 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
407 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
408 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
409 }
410
411 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
412 {
413 rinfo->flags = 0;
414
415 if (sta->last_rx_rate_flag & RX_FLAG_HT) {
416 rinfo->flags |= RATE_INFO_FLAGS_MCS;
417 rinfo->mcs = sta->last_rx_rate_idx;
418 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) {
419 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
420 rinfo->nss = sta->last_rx_rate_vht_nss;
421 rinfo->mcs = sta->last_rx_rate_idx;
422 } else {
423 struct ieee80211_supported_band *sband;
424
425 sband = sta->local->hw.wiphy->bands[
426 ieee80211_get_sdata_band(sta->sdata)];
427 rinfo->legacy =
428 sband->bitrates[sta->last_rx_rate_idx].bitrate;
429 }
430
431 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
432 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
433 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
434 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
435 if (sta->last_rx_rate_flag & RX_FLAG_80MHZ)
436 rinfo->flags |= RATE_INFO_FLAGS_80_MHZ_WIDTH;
437 if (sta->last_rx_rate_flag & RX_FLAG_80P80MHZ)
438 rinfo->flags |= RATE_INFO_FLAGS_80P80_MHZ_WIDTH;
439 if (sta->last_rx_rate_flag & RX_FLAG_160MHZ)
440 rinfo->flags |= RATE_INFO_FLAGS_160_MHZ_WIDTH;
441 }
442
443 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
444 {
445 struct ieee80211_sub_if_data *sdata = sta->sdata;
446 struct ieee80211_local *local = sdata->local;
447 struct timespec uptime;
448
449 sinfo->generation = sdata->local->sta_generation;
450
451 sinfo->filled = STATION_INFO_INACTIVE_TIME |
452 STATION_INFO_RX_BYTES |
453 STATION_INFO_TX_BYTES |
454 STATION_INFO_RX_PACKETS |
455 STATION_INFO_TX_PACKETS |
456 STATION_INFO_TX_RETRIES |
457 STATION_INFO_TX_FAILED |
458 STATION_INFO_TX_BITRATE |
459 STATION_INFO_RX_BITRATE |
460 STATION_INFO_RX_DROP_MISC |
461 STATION_INFO_BSS_PARAM |
462 STATION_INFO_CONNECTED_TIME |
463 STATION_INFO_STA_FLAGS |
464 STATION_INFO_BEACON_LOSS_COUNT;
465
466 do_posix_clock_monotonic_gettime(&uptime);
467 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
468
469 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
470 sinfo->rx_bytes = sta->rx_bytes;
471 sinfo->tx_bytes = sta->tx_bytes;
472 sinfo->rx_packets = sta->rx_packets;
473 sinfo->tx_packets = sta->tx_packets;
474 sinfo->tx_retries = sta->tx_retry_count;
475 sinfo->tx_failed = sta->tx_retry_failed;
476 sinfo->rx_dropped_misc = sta->rx_dropped;
477 sinfo->beacon_loss_count = sta->beacon_loss_count;
478
479 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
480 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
481 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
482 if (!local->ops->get_rssi ||
483 drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
484 sinfo->signal = (s8)sta->last_signal;
485 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
486 }
487
488 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
489 sta_set_rate_info_rx(sta, &sinfo->rxrate);
490
491 if (ieee80211_vif_is_mesh(&sdata->vif)) {
492 #ifdef CONFIG_MAC80211_MESH
493 sinfo->filled |= STATION_INFO_LLID |
494 STATION_INFO_PLID |
495 STATION_INFO_PLINK_STATE |
496 STATION_INFO_LOCAL_PM |
497 STATION_INFO_PEER_PM |
498 STATION_INFO_NONPEER_PM;
499
500 sinfo->llid = le16_to_cpu(sta->llid);
501 sinfo->plid = le16_to_cpu(sta->plid);
502 sinfo->plink_state = sta->plink_state;
503 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
504 sinfo->filled |= STATION_INFO_T_OFFSET;
505 sinfo->t_offset = sta->t_offset;
506 }
507 sinfo->local_pm = sta->local_pm;
508 sinfo->peer_pm = sta->peer_pm;
509 sinfo->nonpeer_pm = sta->nonpeer_pm;
510 #endif
511 }
512
513 sinfo->bss_param.flags = 0;
514 if (sdata->vif.bss_conf.use_cts_prot)
515 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
516 if (sdata->vif.bss_conf.use_short_preamble)
517 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
518 if (sdata->vif.bss_conf.use_short_slot)
519 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
520 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
521 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
522
523 sinfo->sta_flags.set = 0;
524 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
525 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
526 BIT(NL80211_STA_FLAG_WME) |
527 BIT(NL80211_STA_FLAG_MFP) |
528 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
529 BIT(NL80211_STA_FLAG_ASSOCIATED) |
530 BIT(NL80211_STA_FLAG_TDLS_PEER);
531 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
532 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
533 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
534 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
535 if (test_sta_flag(sta, WLAN_STA_WME))
536 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
537 if (test_sta_flag(sta, WLAN_STA_MFP))
538 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
539 if (test_sta_flag(sta, WLAN_STA_AUTH))
540 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
541 if (test_sta_flag(sta, WLAN_STA_ASSOC))
542 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
543 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
544 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
545 }
546
547 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
548 "rx_packets", "rx_bytes", "wep_weak_iv_count",
549 "rx_duplicates", "rx_fragments", "rx_dropped",
550 "tx_packets", "tx_bytes", "tx_fragments",
551 "tx_filtered", "tx_retry_failed", "tx_retries",
552 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
553 "channel", "noise", "ch_time", "ch_time_busy",
554 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
555 };
556 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
557
558 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
559 struct net_device *dev,
560 int sset)
561 {
562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
563 int rv = 0;
564
565 if (sset == ETH_SS_STATS)
566 rv += STA_STATS_LEN;
567
568 rv += drv_get_et_sset_count(sdata, sset);
569
570 if (rv == 0)
571 return -EOPNOTSUPP;
572 return rv;
573 }
574
575 static void ieee80211_get_et_stats(struct wiphy *wiphy,
576 struct net_device *dev,
577 struct ethtool_stats *stats,
578 u64 *data)
579 {
580 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
581 struct ieee80211_chanctx_conf *chanctx_conf;
582 struct ieee80211_channel *channel;
583 struct sta_info *sta;
584 struct ieee80211_local *local = sdata->local;
585 struct station_info sinfo;
586 struct survey_info survey;
587 int i, q;
588 #define STA_STATS_SURVEY_LEN 7
589
590 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
591
592 #define ADD_STA_STATS(sta) \
593 do { \
594 data[i++] += sta->rx_packets; \
595 data[i++] += sta->rx_bytes; \
596 data[i++] += sta->wep_weak_iv_count; \
597 data[i++] += sta->num_duplicates; \
598 data[i++] += sta->rx_fragments; \
599 data[i++] += sta->rx_dropped; \
600 \
601 data[i++] += sta->tx_packets; \
602 data[i++] += sta->tx_bytes; \
603 data[i++] += sta->tx_fragments; \
604 data[i++] += sta->tx_filtered_count; \
605 data[i++] += sta->tx_retry_failed; \
606 data[i++] += sta->tx_retry_count; \
607 data[i++] += sta->beacon_loss_count; \
608 } while (0)
609
610 /* For Managed stations, find the single station based on BSSID
611 * and use that. For interface types, iterate through all available
612 * stations and add stats for any station that is assigned to this
613 * network device.
614 */
615
616 mutex_lock(&local->sta_mtx);
617
618 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
619 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
620
621 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
622 goto do_survey;
623
624 i = 0;
625 ADD_STA_STATS(sta);
626
627 data[i++] = sta->sta_state;
628
629 sinfo.filled = 0;
630 sta_set_sinfo(sta, &sinfo);
631
632 if (sinfo.filled & STATION_INFO_TX_BITRATE)
633 data[i] = 100000 *
634 cfg80211_calculate_bitrate(&sinfo.txrate);
635 i++;
636 if (sinfo.filled & STATION_INFO_RX_BITRATE)
637 data[i] = 100000 *
638 cfg80211_calculate_bitrate(&sinfo.rxrate);
639 i++;
640
641 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
642 data[i] = (u8)sinfo.signal_avg;
643 i++;
644 } else {
645 list_for_each_entry(sta, &local->sta_list, list) {
646 /* Make sure this station belongs to the proper dev */
647 if (sta->sdata->dev != dev)
648 continue;
649
650 i = 0;
651 ADD_STA_STATS(sta);
652 }
653 }
654
655 do_survey:
656 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
657 /* Get survey stats for current channel */
658 survey.filled = 0;
659
660 rcu_read_lock();
661 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
662 if (chanctx_conf)
663 channel = chanctx_conf->def.chan;
664 else
665 channel = NULL;
666 rcu_read_unlock();
667
668 if (channel) {
669 q = 0;
670 do {
671 survey.filled = 0;
672 if (drv_get_survey(local, q, &survey) != 0) {
673 survey.filled = 0;
674 break;
675 }
676 q++;
677 } while (channel != survey.channel);
678 }
679
680 if (survey.filled)
681 data[i++] = survey.channel->center_freq;
682 else
683 data[i++] = 0;
684 if (survey.filled & SURVEY_INFO_NOISE_DBM)
685 data[i++] = (u8)survey.noise;
686 else
687 data[i++] = -1LL;
688 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
689 data[i++] = survey.channel_time;
690 else
691 data[i++] = -1LL;
692 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
693 data[i++] = survey.channel_time_busy;
694 else
695 data[i++] = -1LL;
696 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
697 data[i++] = survey.channel_time_ext_busy;
698 else
699 data[i++] = -1LL;
700 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
701 data[i++] = survey.channel_time_rx;
702 else
703 data[i++] = -1LL;
704 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
705 data[i++] = survey.channel_time_tx;
706 else
707 data[i++] = -1LL;
708
709 mutex_unlock(&local->sta_mtx);
710
711 if (WARN_ON(i != STA_STATS_LEN))
712 return;
713
714 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
715 }
716
717 static void ieee80211_get_et_strings(struct wiphy *wiphy,
718 struct net_device *dev,
719 u32 sset, u8 *data)
720 {
721 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
722 int sz_sta_stats = 0;
723
724 if (sset == ETH_SS_STATS) {
725 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
726 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
727 }
728 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
729 }
730
731 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
732 int idx, u8 *mac, struct station_info *sinfo)
733 {
734 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
735 struct ieee80211_local *local = sdata->local;
736 struct sta_info *sta;
737 int ret = -ENOENT;
738
739 mutex_lock(&local->sta_mtx);
740
741 sta = sta_info_get_by_idx(sdata, idx);
742 if (sta) {
743 ret = 0;
744 memcpy(mac, sta->sta.addr, ETH_ALEN);
745 sta_set_sinfo(sta, sinfo);
746 }
747
748 mutex_unlock(&local->sta_mtx);
749
750 return ret;
751 }
752
753 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
754 int idx, struct survey_info *survey)
755 {
756 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
757
758 return drv_get_survey(local, idx, survey);
759 }
760
761 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
762 u8 *mac, struct station_info *sinfo)
763 {
764 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
765 struct ieee80211_local *local = sdata->local;
766 struct sta_info *sta;
767 int ret = -ENOENT;
768
769 mutex_lock(&local->sta_mtx);
770
771 sta = sta_info_get_bss(sdata, mac);
772 if (sta) {
773 ret = 0;
774 sta_set_sinfo(sta, sinfo);
775 }
776
777 mutex_unlock(&local->sta_mtx);
778
779 return ret;
780 }
781
782 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
783 struct cfg80211_chan_def *chandef)
784 {
785 struct ieee80211_local *local = wiphy_priv(wiphy);
786 struct ieee80211_sub_if_data *sdata;
787 int ret = 0;
788
789 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
790 return 0;
791
792 mutex_lock(&local->iflist_mtx);
793 if (local->use_chanctx) {
794 sdata = rcu_dereference_protected(
795 local->monitor_sdata,
796 lockdep_is_held(&local->iflist_mtx));
797 if (sdata) {
798 ieee80211_vif_release_channel(sdata);
799 ret = ieee80211_vif_use_channel(sdata, chandef,
800 IEEE80211_CHANCTX_EXCLUSIVE);
801 }
802 } else if (local->open_count == local->monitors) {
803 local->_oper_channel = chandef->chan;
804 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
805 ieee80211_hw_config(local, 0);
806 }
807
808 if (ret == 0)
809 local->monitor_chandef = *chandef;
810 mutex_unlock(&local->iflist_mtx);
811
812 return ret;
813 }
814
815 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
816 const u8 *resp, size_t resp_len)
817 {
818 struct probe_resp *new, *old;
819
820 if (!resp || !resp_len)
821 return 1;
822
823 old = rtnl_dereference(sdata->u.ap.probe_resp);
824
825 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
826 if (!new)
827 return -ENOMEM;
828
829 new->len = resp_len;
830 memcpy(new->data, resp, resp_len);
831
832 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
833 if (old)
834 kfree_rcu(old, rcu_head);
835
836 return 0;
837 }
838
839 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
840 struct cfg80211_beacon_data *params)
841 {
842 struct beacon_data *new, *old;
843 int new_head_len, new_tail_len;
844 int size, err;
845 u32 changed = BSS_CHANGED_BEACON;
846
847 old = rtnl_dereference(sdata->u.ap.beacon);
848
849 /* Need to have a beacon head if we don't have one yet */
850 if (!params->head && !old)
851 return -EINVAL;
852
853 /* new or old head? */
854 if (params->head)
855 new_head_len = params->head_len;
856 else
857 new_head_len = old->head_len;
858
859 /* new or old tail? */
860 if (params->tail || !old)
861 /* params->tail_len will be zero for !params->tail */
862 new_tail_len = params->tail_len;
863 else
864 new_tail_len = old->tail_len;
865
866 size = sizeof(*new) + new_head_len + new_tail_len;
867
868 new = kzalloc(size, GFP_KERNEL);
869 if (!new)
870 return -ENOMEM;
871
872 /* start filling the new info now */
873
874 /*
875 * pointers go into the block we allocated,
876 * memory is | beacon_data | head | tail |
877 */
878 new->head = ((u8 *) new) + sizeof(*new);
879 new->tail = new->head + new_head_len;
880 new->head_len = new_head_len;
881 new->tail_len = new_tail_len;
882
883 /* copy in head */
884 if (params->head)
885 memcpy(new->head, params->head, new_head_len);
886 else
887 memcpy(new->head, old->head, new_head_len);
888
889 /* copy in optional tail */
890 if (params->tail)
891 memcpy(new->tail, params->tail, new_tail_len);
892 else
893 if (old)
894 memcpy(new->tail, old->tail, new_tail_len);
895
896 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
897 params->probe_resp_len);
898 if (err < 0)
899 return err;
900 if (err == 0)
901 changed |= BSS_CHANGED_AP_PROBE_RESP;
902
903 rcu_assign_pointer(sdata->u.ap.beacon, new);
904
905 if (old)
906 kfree_rcu(old, rcu_head);
907
908 return changed;
909 }
910
911 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
912 struct cfg80211_ap_settings *params)
913 {
914 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
915 struct beacon_data *old;
916 struct ieee80211_sub_if_data *vlan;
917 u32 changed = BSS_CHANGED_BEACON_INT |
918 BSS_CHANGED_BEACON_ENABLED |
919 BSS_CHANGED_BEACON |
920 BSS_CHANGED_SSID |
921 BSS_CHANGED_P2P_PS;
922 int err;
923
924 old = rtnl_dereference(sdata->u.ap.beacon);
925 if (old)
926 return -EALREADY;
927
928 /* TODO: make hostapd tell us what it wants */
929 sdata->smps_mode = IEEE80211_SMPS_OFF;
930 sdata->needed_rx_chains = sdata->local->rx_chains;
931 sdata->radar_required = params->radar_required;
932
933 err = ieee80211_vif_use_channel(sdata, &params->chandef,
934 IEEE80211_CHANCTX_SHARED);
935 if (err)
936 return err;
937 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
938
939 /*
940 * Apply control port protocol, this allows us to
941 * not encrypt dynamic WEP control frames.
942 */
943 sdata->control_port_protocol = params->crypto.control_port_ethertype;
944 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
945 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
946 vlan->control_port_protocol =
947 params->crypto.control_port_ethertype;
948 vlan->control_port_no_encrypt =
949 params->crypto.control_port_no_encrypt;
950 }
951
952 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
953 sdata->vif.bss_conf.dtim_period = params->dtim_period;
954 sdata->vif.bss_conf.enable_beacon = true;
955
956 sdata->vif.bss_conf.ssid_len = params->ssid_len;
957 if (params->ssid_len)
958 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
959 params->ssid_len);
960 sdata->vif.bss_conf.hidden_ssid =
961 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
962
963 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
964 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
965
966 err = ieee80211_assign_beacon(sdata, &params->beacon);
967 if (err < 0)
968 return err;
969 changed |= err;
970
971 err = drv_start_ap(sdata->local, sdata);
972 if (err) {
973 old = rtnl_dereference(sdata->u.ap.beacon);
974 if (old)
975 kfree_rcu(old, rcu_head);
976 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
977 return err;
978 }
979
980 ieee80211_bss_info_change_notify(sdata, changed);
981
982 netif_carrier_on(dev);
983 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
984 netif_carrier_on(vlan->dev);
985
986 return 0;
987 }
988
989 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
990 struct cfg80211_beacon_data *params)
991 {
992 struct ieee80211_sub_if_data *sdata;
993 struct beacon_data *old;
994 int err;
995
996 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
997
998 old = rtnl_dereference(sdata->u.ap.beacon);
999 if (!old)
1000 return -ENOENT;
1001
1002 err = ieee80211_assign_beacon(sdata, params);
1003 if (err < 0)
1004 return err;
1005 ieee80211_bss_info_change_notify(sdata, err);
1006 return 0;
1007 }
1008
1009 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1010 {
1011 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1012 struct ieee80211_sub_if_data *vlan;
1013 struct ieee80211_local *local = sdata->local;
1014 struct beacon_data *old_beacon;
1015 struct probe_resp *old_probe_resp;
1016
1017 old_beacon = rtnl_dereference(sdata->u.ap.beacon);
1018 if (!old_beacon)
1019 return -ENOENT;
1020 old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
1021
1022 /* turn off carrier for this interface and dependent VLANs */
1023 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1024 netif_carrier_off(vlan->dev);
1025 netif_carrier_off(dev);
1026
1027 /* remove beacon and probe response */
1028 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1029 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1030 kfree_rcu(old_beacon, rcu_head);
1031 if (old_probe_resp)
1032 kfree_rcu(old_probe_resp, rcu_head);
1033
1034 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1035 sta_info_flush_defer(vlan);
1036 sta_info_flush_defer(sdata);
1037 rcu_barrier();
1038 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
1039 sta_info_flush_cleanup(vlan);
1040 ieee80211_free_keys(vlan);
1041 }
1042 sta_info_flush_cleanup(sdata);
1043 ieee80211_free_keys(sdata);
1044
1045 sdata->vif.bss_conf.enable_beacon = false;
1046 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1047 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1048
1049 drv_stop_ap(sdata->local, sdata);
1050
1051 /* free all potentially still buffered bcast frames */
1052 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1053 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1054
1055 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1056 ieee80211_vif_release_channel(sdata);
1057
1058 return 0;
1059 }
1060
1061 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1062 struct iapp_layer2_update {
1063 u8 da[ETH_ALEN]; /* broadcast */
1064 u8 sa[ETH_ALEN]; /* STA addr */
1065 __be16 len; /* 6 */
1066 u8 dsap; /* 0 */
1067 u8 ssap; /* 0 */
1068 u8 control;
1069 u8 xid_info[3];
1070 } __packed;
1071
1072 static void ieee80211_send_layer2_update(struct sta_info *sta)
1073 {
1074 struct iapp_layer2_update *msg;
1075 struct sk_buff *skb;
1076
1077 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1078 * bridge devices */
1079
1080 skb = dev_alloc_skb(sizeof(*msg));
1081 if (!skb)
1082 return;
1083 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1084
1085 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1086 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1087
1088 eth_broadcast_addr(msg->da);
1089 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1090 msg->len = htons(6);
1091 msg->dsap = 0;
1092 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1093 msg->control = 0xaf; /* XID response lsb.1111F101.
1094 * F=0 (no poll command; unsolicited frame) */
1095 msg->xid_info[0] = 0x81; /* XID format identifier */
1096 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1097 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1098
1099 skb->dev = sta->sdata->dev;
1100 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1101 memset(skb->cb, 0, sizeof(skb->cb));
1102 netif_rx_ni(skb);
1103 }
1104
1105 static int sta_apply_auth_flags(struct ieee80211_local *local,
1106 struct sta_info *sta,
1107 u32 mask, u32 set)
1108 {
1109 int ret;
1110
1111 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1112 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1113 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1114 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1115 if (ret)
1116 return ret;
1117 }
1118
1119 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1120 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1121 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1122 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1123 if (ret)
1124 return ret;
1125 }
1126
1127 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1128 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1129 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1130 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1131 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1132 else
1133 ret = 0;
1134 if (ret)
1135 return ret;
1136 }
1137
1138 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1139 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1140 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1141 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1142 if (ret)
1143 return ret;
1144 }
1145
1146 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1147 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1148 test_sta_flag(sta, WLAN_STA_AUTH)) {
1149 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1150 if (ret)
1151 return ret;
1152 }
1153
1154 return 0;
1155 }
1156
1157 static int sta_apply_parameters(struct ieee80211_local *local,
1158 struct sta_info *sta,
1159 struct station_parameters *params)
1160 {
1161 int ret = 0;
1162 u32 rates;
1163 int i, j;
1164 struct ieee80211_supported_band *sband;
1165 struct ieee80211_sub_if_data *sdata = sta->sdata;
1166 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1167 u32 mask, set;
1168
1169 sband = local->hw.wiphy->bands[band];
1170
1171 mask = params->sta_flags_mask;
1172 set = params->sta_flags_set;
1173
1174 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1175 /*
1176 * In mesh mode, ASSOCIATED isn't part of the nl80211
1177 * API but must follow AUTHENTICATED for driver state.
1178 */
1179 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1180 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1181 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1182 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1183 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1184 /*
1185 * TDLS -- everything follows authorized, but
1186 * only becoming authorized is possible, not
1187 * going back
1188 */
1189 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1190 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1191 BIT(NL80211_STA_FLAG_ASSOCIATED);
1192 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1193 BIT(NL80211_STA_FLAG_ASSOCIATED);
1194 }
1195 }
1196
1197 ret = sta_apply_auth_flags(local, sta, mask, set);
1198 if (ret)
1199 return ret;
1200
1201 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1202 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1203 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1204 else
1205 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1206 }
1207
1208 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1209 if (set & BIT(NL80211_STA_FLAG_WME)) {
1210 set_sta_flag(sta, WLAN_STA_WME);
1211 sta->sta.wme = true;
1212 } else {
1213 clear_sta_flag(sta, WLAN_STA_WME);
1214 sta->sta.wme = false;
1215 }
1216 }
1217
1218 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1219 if (set & BIT(NL80211_STA_FLAG_MFP))
1220 set_sta_flag(sta, WLAN_STA_MFP);
1221 else
1222 clear_sta_flag(sta, WLAN_STA_MFP);
1223 }
1224
1225 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1226 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1227 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1228 else
1229 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1230 }
1231
1232 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1233 sta->sta.uapsd_queues = params->uapsd_queues;
1234 sta->sta.max_sp = params->max_sp;
1235 }
1236
1237 /*
1238 * cfg80211 validates this (1-2007) and allows setting the AID
1239 * only when creating a new station entry
1240 */
1241 if (params->aid)
1242 sta->sta.aid = params->aid;
1243
1244 /*
1245 * Some of the following updates would be racy if called on an
1246 * existing station, via ieee80211_change_station(). However,
1247 * all such changes are rejected by cfg80211 except for updates
1248 * changing the supported rates on an existing but not yet used
1249 * TDLS peer.
1250 */
1251
1252 if (params->listen_interval >= 0)
1253 sta->listen_interval = params->listen_interval;
1254
1255 if (params->supported_rates) {
1256 rates = 0;
1257
1258 for (i = 0; i < params->supported_rates_len; i++) {
1259 int rate = (params->supported_rates[i] & 0x7f) * 5;
1260 for (j = 0; j < sband->n_bitrates; j++) {
1261 if (sband->bitrates[j].bitrate == rate)
1262 rates |= BIT(j);
1263 }
1264 }
1265 sta->sta.supp_rates[band] = rates;
1266 }
1267
1268 if (params->ht_capa)
1269 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1270 params->ht_capa, sta);
1271
1272 if (params->vht_capa)
1273 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1274 params->vht_capa, sta);
1275
1276 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1277 #ifdef CONFIG_MAC80211_MESH
1278 u32 changed = 0;
1279
1280 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1281 switch (params->plink_state) {
1282 case NL80211_PLINK_ESTAB:
1283 if (sta->plink_state != NL80211_PLINK_ESTAB)
1284 changed = mesh_plink_inc_estab_count(
1285 sdata);
1286 sta->plink_state = params->plink_state;
1287
1288 ieee80211_mps_sta_status_update(sta);
1289 changed |= ieee80211_mps_set_sta_local_pm(sta,
1290 sdata->u.mesh.mshcfg.power_mode);
1291 break;
1292 case NL80211_PLINK_LISTEN:
1293 case NL80211_PLINK_BLOCKED:
1294 case NL80211_PLINK_OPN_SNT:
1295 case NL80211_PLINK_OPN_RCVD:
1296 case NL80211_PLINK_CNF_RCVD:
1297 case NL80211_PLINK_HOLDING:
1298 if (sta->plink_state == NL80211_PLINK_ESTAB)
1299 changed = mesh_plink_dec_estab_count(
1300 sdata);
1301 sta->plink_state = params->plink_state;
1302
1303 ieee80211_mps_sta_status_update(sta);
1304 changed |=
1305 ieee80211_mps_local_status_update(sdata);
1306 break;
1307 default:
1308 /* nothing */
1309 break;
1310 }
1311 }
1312
1313 switch (params->plink_action) {
1314 case NL80211_PLINK_ACTION_NO_ACTION:
1315 /* nothing */
1316 break;
1317 case NL80211_PLINK_ACTION_OPEN:
1318 changed |= mesh_plink_open(sta);
1319 break;
1320 case NL80211_PLINK_ACTION_BLOCK:
1321 changed |= mesh_plink_block(sta);
1322 break;
1323 }
1324
1325 if (params->local_pm)
1326 changed |=
1327 ieee80211_mps_set_sta_local_pm(sta,
1328 params->local_pm);
1329 ieee80211_bss_info_change_notify(sdata, changed);
1330 #endif
1331 }
1332
1333 return 0;
1334 }
1335
1336 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1337 u8 *mac, struct station_parameters *params)
1338 {
1339 struct ieee80211_local *local = wiphy_priv(wiphy);
1340 struct sta_info *sta;
1341 struct ieee80211_sub_if_data *sdata;
1342 int err;
1343 int layer2_update;
1344
1345 if (params->vlan) {
1346 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1347
1348 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1349 sdata->vif.type != NL80211_IFTYPE_AP)
1350 return -EINVAL;
1351 } else
1352 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1353
1354 if (ether_addr_equal(mac, sdata->vif.addr))
1355 return -EINVAL;
1356
1357 if (is_multicast_ether_addr(mac))
1358 return -EINVAL;
1359
1360 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1361 if (!sta)
1362 return -ENOMEM;
1363
1364 /*
1365 * defaults -- if userspace wants something else we'll
1366 * change it accordingly in sta_apply_parameters()
1367 */
1368 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
1369 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1370 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1371 }
1372
1373 err = sta_apply_parameters(local, sta, params);
1374 if (err) {
1375 sta_info_free(local, sta);
1376 return err;
1377 }
1378
1379 /*
1380 * for TDLS, rate control should be initialized only when
1381 * rates are known and station is marked authorized
1382 */
1383 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1384 rate_control_rate_init(sta);
1385
1386 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1387 sdata->vif.type == NL80211_IFTYPE_AP;
1388
1389 err = sta_info_insert_rcu(sta);
1390 if (err) {
1391 rcu_read_unlock();
1392 return err;
1393 }
1394
1395 if (layer2_update)
1396 ieee80211_send_layer2_update(sta);
1397
1398 rcu_read_unlock();
1399
1400 return 0;
1401 }
1402
1403 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1404 u8 *mac)
1405 {
1406 struct ieee80211_sub_if_data *sdata;
1407
1408 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1409
1410 if (mac)
1411 return sta_info_destroy_addr_bss(sdata, mac);
1412
1413 sta_info_flush(sdata);
1414 return 0;
1415 }
1416
1417 static int ieee80211_change_station(struct wiphy *wiphy,
1418 struct net_device *dev, u8 *mac,
1419 struct station_parameters *params)
1420 {
1421 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1422 struct ieee80211_local *local = wiphy_priv(wiphy);
1423 struct sta_info *sta;
1424 struct ieee80211_sub_if_data *vlansdata;
1425 enum cfg80211_station_type statype;
1426 int err;
1427
1428 mutex_lock(&local->sta_mtx);
1429
1430 sta = sta_info_get_bss(sdata, mac);
1431 if (!sta) {
1432 err = -ENOENT;
1433 goto out_err;
1434 }
1435
1436 switch (sdata->vif.type) {
1437 case NL80211_IFTYPE_MESH_POINT:
1438 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1439 statype = CFG80211_STA_MESH_PEER_SECURE;
1440 else
1441 statype = CFG80211_STA_MESH_PEER_NONSEC;
1442 break;
1443 case NL80211_IFTYPE_ADHOC:
1444 statype = CFG80211_STA_IBSS;
1445 break;
1446 case NL80211_IFTYPE_STATION:
1447 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1448 statype = CFG80211_STA_AP_STA;
1449 break;
1450 }
1451 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1452 statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1453 else
1454 statype = CFG80211_STA_TDLS_PEER_SETUP;
1455 break;
1456 case NL80211_IFTYPE_AP:
1457 case NL80211_IFTYPE_AP_VLAN:
1458 statype = CFG80211_STA_AP_CLIENT;
1459 break;
1460 default:
1461 err = -EOPNOTSUPP;
1462 goto out_err;
1463 }
1464
1465 err = cfg80211_check_station_change(wiphy, params, statype);
1466 if (err)
1467 goto out_err;
1468
1469 if (params->vlan && params->vlan != sta->sdata->dev) {
1470 bool prev_4addr = false;
1471 bool new_4addr = false;
1472
1473 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1474
1475 if (params->vlan->ieee80211_ptr->use_4addr) {
1476 if (vlansdata->u.vlan.sta) {
1477 err = -EBUSY;
1478 goto out_err;
1479 }
1480
1481 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1482 new_4addr = true;
1483 }
1484
1485 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1486 sta->sdata->u.vlan.sta) {
1487 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1488 prev_4addr = true;
1489 }
1490
1491 sta->sdata = vlansdata;
1492
1493 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1494 prev_4addr != new_4addr) {
1495 if (new_4addr)
1496 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1497 else
1498 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1499 }
1500
1501 ieee80211_send_layer2_update(sta);
1502 }
1503
1504 err = sta_apply_parameters(local, sta, params);
1505 if (err)
1506 goto out_err;
1507
1508 /* When peer becomes authorized, init rate control as well */
1509 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1510 test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1511 rate_control_rate_init(sta);
1512
1513 mutex_unlock(&local->sta_mtx);
1514
1515 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1516 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1517 ieee80211_recalc_ps(local, -1);
1518 ieee80211_recalc_ps_vif(sdata);
1519 }
1520
1521 return 0;
1522 out_err:
1523 mutex_unlock(&local->sta_mtx);
1524 return err;
1525 }
1526
1527 #ifdef CONFIG_MAC80211_MESH
1528 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1529 u8 *dst, u8 *next_hop)
1530 {
1531 struct ieee80211_sub_if_data *sdata;
1532 struct mesh_path *mpath;
1533 struct sta_info *sta;
1534 int err;
1535
1536 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538 rcu_read_lock();
1539 sta = sta_info_get(sdata, next_hop);
1540 if (!sta) {
1541 rcu_read_unlock();
1542 return -ENOENT;
1543 }
1544
1545 err = mesh_path_add(sdata, dst);
1546 if (err) {
1547 rcu_read_unlock();
1548 return err;
1549 }
1550
1551 mpath = mesh_path_lookup(sdata, dst);
1552 if (!mpath) {
1553 rcu_read_unlock();
1554 return -ENXIO;
1555 }
1556 mesh_path_fix_nexthop(mpath, sta);
1557
1558 rcu_read_unlock();
1559 return 0;
1560 }
1561
1562 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1563 u8 *dst)
1564 {
1565 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1566
1567 if (dst)
1568 return mesh_path_del(sdata, dst);
1569
1570 mesh_path_flush_by_iface(sdata);
1571 return 0;
1572 }
1573
1574 static int ieee80211_change_mpath(struct wiphy *wiphy,
1575 struct net_device *dev,
1576 u8 *dst, u8 *next_hop)
1577 {
1578 struct ieee80211_sub_if_data *sdata;
1579 struct mesh_path *mpath;
1580 struct sta_info *sta;
1581
1582 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1583
1584 rcu_read_lock();
1585
1586 sta = sta_info_get(sdata, next_hop);
1587 if (!sta) {
1588 rcu_read_unlock();
1589 return -ENOENT;
1590 }
1591
1592 mpath = mesh_path_lookup(sdata, dst);
1593 if (!mpath) {
1594 rcu_read_unlock();
1595 return -ENOENT;
1596 }
1597
1598 mesh_path_fix_nexthop(mpath, sta);
1599
1600 rcu_read_unlock();
1601 return 0;
1602 }
1603
1604 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1605 struct mpath_info *pinfo)
1606 {
1607 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1608
1609 if (next_hop_sta)
1610 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1611 else
1612 memset(next_hop, 0, ETH_ALEN);
1613
1614 memset(pinfo, 0, sizeof(*pinfo));
1615
1616 pinfo->generation = mesh_paths_generation;
1617
1618 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1619 MPATH_INFO_SN |
1620 MPATH_INFO_METRIC |
1621 MPATH_INFO_EXPTIME |
1622 MPATH_INFO_DISCOVERY_TIMEOUT |
1623 MPATH_INFO_DISCOVERY_RETRIES |
1624 MPATH_INFO_FLAGS;
1625
1626 pinfo->frame_qlen = mpath->frame_queue.qlen;
1627 pinfo->sn = mpath->sn;
1628 pinfo->metric = mpath->metric;
1629 if (time_before(jiffies, mpath->exp_time))
1630 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1631 pinfo->discovery_timeout =
1632 jiffies_to_msecs(mpath->discovery_timeout);
1633 pinfo->discovery_retries = mpath->discovery_retries;
1634 if (mpath->flags & MESH_PATH_ACTIVE)
1635 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1636 if (mpath->flags & MESH_PATH_RESOLVING)
1637 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1638 if (mpath->flags & MESH_PATH_SN_VALID)
1639 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1640 if (mpath->flags & MESH_PATH_FIXED)
1641 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1642 if (mpath->flags & MESH_PATH_RESOLVED)
1643 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1644 }
1645
1646 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1647 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1648
1649 {
1650 struct ieee80211_sub_if_data *sdata;
1651 struct mesh_path *mpath;
1652
1653 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1654
1655 rcu_read_lock();
1656 mpath = mesh_path_lookup(sdata, dst);
1657 if (!mpath) {
1658 rcu_read_unlock();
1659 return -ENOENT;
1660 }
1661 memcpy(dst, mpath->dst, ETH_ALEN);
1662 mpath_set_pinfo(mpath, next_hop, pinfo);
1663 rcu_read_unlock();
1664 return 0;
1665 }
1666
1667 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1668 int idx, u8 *dst, u8 *next_hop,
1669 struct mpath_info *pinfo)
1670 {
1671 struct ieee80211_sub_if_data *sdata;
1672 struct mesh_path *mpath;
1673
1674 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1675
1676 rcu_read_lock();
1677 mpath = mesh_path_lookup_by_idx(sdata, idx);
1678 if (!mpath) {
1679 rcu_read_unlock();
1680 return -ENOENT;
1681 }
1682 memcpy(dst, mpath->dst, ETH_ALEN);
1683 mpath_set_pinfo(mpath, next_hop, pinfo);
1684 rcu_read_unlock();
1685 return 0;
1686 }
1687
1688 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1689 struct net_device *dev,
1690 struct mesh_config *conf)
1691 {
1692 struct ieee80211_sub_if_data *sdata;
1693 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1694
1695 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1696 return 0;
1697 }
1698
1699 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1700 {
1701 return (mask >> (parm-1)) & 0x1;
1702 }
1703
1704 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1705 const struct mesh_setup *setup)
1706 {
1707 u8 *new_ie;
1708 const u8 *old_ie;
1709 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1710 struct ieee80211_sub_if_data, u.mesh);
1711
1712 /* allocate information elements */
1713 new_ie = NULL;
1714 old_ie = ifmsh->ie;
1715
1716 if (setup->ie_len) {
1717 new_ie = kmemdup(setup->ie, setup->ie_len,
1718 GFP_KERNEL);
1719 if (!new_ie)
1720 return -ENOMEM;
1721 }
1722 ifmsh->ie_len = setup->ie_len;
1723 ifmsh->ie = new_ie;
1724 kfree(old_ie);
1725
1726 /* now copy the rest of the setup parameters */
1727 ifmsh->mesh_id_len = setup->mesh_id_len;
1728 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1729 ifmsh->mesh_sp_id = setup->sync_method;
1730 ifmsh->mesh_pp_id = setup->path_sel_proto;
1731 ifmsh->mesh_pm_id = setup->path_metric;
1732 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1733 if (setup->is_authenticated)
1734 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1735 if (setup->is_secure)
1736 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1737
1738 /* mcast rate setting in Mesh Node */
1739 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1740 sizeof(setup->mcast_rate));
1741
1742 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1743 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1744
1745 return 0;
1746 }
1747
1748 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1749 struct net_device *dev, u32 mask,
1750 const struct mesh_config *nconf)
1751 {
1752 struct mesh_config *conf;
1753 struct ieee80211_sub_if_data *sdata;
1754 struct ieee80211_if_mesh *ifmsh;
1755
1756 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1757 ifmsh = &sdata->u.mesh;
1758
1759 /* Set the config options which we are interested in setting */
1760 conf = &(sdata->u.mesh.mshcfg);
1761 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1762 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1763 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1764 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1765 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1766 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1767 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1768 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1769 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1770 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1771 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1772 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1773 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1774 conf->element_ttl = nconf->element_ttl;
1775 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1776 conf->auto_open_plinks = nconf->auto_open_plinks;
1777 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1778 conf->dot11MeshNbrOffsetMaxNeighbor =
1779 nconf->dot11MeshNbrOffsetMaxNeighbor;
1780 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1781 conf->dot11MeshHWMPmaxPREQretries =
1782 nconf->dot11MeshHWMPmaxPREQretries;
1783 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1784 conf->path_refresh_time = nconf->path_refresh_time;
1785 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1786 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1787 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1788 conf->dot11MeshHWMPactivePathTimeout =
1789 nconf->dot11MeshHWMPactivePathTimeout;
1790 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1791 conf->dot11MeshHWMPpreqMinInterval =
1792 nconf->dot11MeshHWMPpreqMinInterval;
1793 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1794 conf->dot11MeshHWMPperrMinInterval =
1795 nconf->dot11MeshHWMPperrMinInterval;
1796 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1797 mask))
1798 conf->dot11MeshHWMPnetDiameterTraversalTime =
1799 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1800 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1801 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1802 ieee80211_mesh_root_setup(ifmsh);
1803 }
1804 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1805 /* our current gate announcement implementation rides on root
1806 * announcements, so require this ifmsh to also be a root node
1807 * */
1808 if (nconf->dot11MeshGateAnnouncementProtocol &&
1809 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1810 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1811 ieee80211_mesh_root_setup(ifmsh);
1812 }
1813 conf->dot11MeshGateAnnouncementProtocol =
1814 nconf->dot11MeshGateAnnouncementProtocol;
1815 }
1816 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1817 conf->dot11MeshHWMPRannInterval =
1818 nconf->dot11MeshHWMPRannInterval;
1819 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1820 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1821 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1822 /* our RSSI threshold implementation is supported only for
1823 * devices that report signal in dBm.
1824 */
1825 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1826 return -ENOTSUPP;
1827 conf->rssi_threshold = nconf->rssi_threshold;
1828 }
1829 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1830 conf->ht_opmode = nconf->ht_opmode;
1831 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1832 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1833 }
1834 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1835 conf->dot11MeshHWMPactivePathToRootTimeout =
1836 nconf->dot11MeshHWMPactivePathToRootTimeout;
1837 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1838 conf->dot11MeshHWMProotInterval =
1839 nconf->dot11MeshHWMProotInterval;
1840 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1841 conf->dot11MeshHWMPconfirmationInterval =
1842 nconf->dot11MeshHWMPconfirmationInterval;
1843 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1844 conf->power_mode = nconf->power_mode;
1845 ieee80211_mps_local_status_update(sdata);
1846 }
1847 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1848 conf->dot11MeshAwakeWindowDuration =
1849 nconf->dot11MeshAwakeWindowDuration;
1850 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1851 return 0;
1852 }
1853
1854 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1855 const struct mesh_config *conf,
1856 const struct mesh_setup *setup)
1857 {
1858 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1859 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1860 int err;
1861
1862 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1863 err = copy_mesh_setup(ifmsh, setup);
1864 if (err)
1865 return err;
1866
1867 /* can mesh use other SMPS modes? */
1868 sdata->smps_mode = IEEE80211_SMPS_OFF;
1869 sdata->needed_rx_chains = sdata->local->rx_chains;
1870
1871 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1872 IEEE80211_CHANCTX_SHARED);
1873 if (err)
1874 return err;
1875
1876 return ieee80211_start_mesh(sdata);
1877 }
1878
1879 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1880 {
1881 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1882
1883 ieee80211_stop_mesh(sdata);
1884 ieee80211_vif_release_channel(sdata);
1885
1886 return 0;
1887 }
1888 #endif
1889
1890 static int ieee80211_change_bss(struct wiphy *wiphy,
1891 struct net_device *dev,
1892 struct bss_parameters *params)
1893 {
1894 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1895 enum ieee80211_band band;
1896 u32 changed = 0;
1897
1898 if (!rtnl_dereference(sdata->u.ap.beacon))
1899 return -ENOENT;
1900
1901 band = ieee80211_get_sdata_band(sdata);
1902
1903 if (params->use_cts_prot >= 0) {
1904 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1905 changed |= BSS_CHANGED_ERP_CTS_PROT;
1906 }
1907 if (params->use_short_preamble >= 0) {
1908 sdata->vif.bss_conf.use_short_preamble =
1909 params->use_short_preamble;
1910 changed |= BSS_CHANGED_ERP_PREAMBLE;
1911 }
1912
1913 if (!sdata->vif.bss_conf.use_short_slot &&
1914 band == IEEE80211_BAND_5GHZ) {
1915 sdata->vif.bss_conf.use_short_slot = true;
1916 changed |= BSS_CHANGED_ERP_SLOT;
1917 }
1918
1919 if (params->use_short_slot_time >= 0) {
1920 sdata->vif.bss_conf.use_short_slot =
1921 params->use_short_slot_time;
1922 changed |= BSS_CHANGED_ERP_SLOT;
1923 }
1924
1925 if (params->basic_rates) {
1926 int i, j;
1927 u32 rates = 0;
1928 struct ieee80211_supported_band *sband = wiphy->bands[band];
1929
1930 for (i = 0; i < params->basic_rates_len; i++) {
1931 int rate = (params->basic_rates[i] & 0x7f) * 5;
1932 for (j = 0; j < sband->n_bitrates; j++) {
1933 if (sband->bitrates[j].bitrate == rate)
1934 rates |= BIT(j);
1935 }
1936 }
1937 sdata->vif.bss_conf.basic_rates = rates;
1938 changed |= BSS_CHANGED_BASIC_RATES;
1939 }
1940
1941 if (params->ap_isolate >= 0) {
1942 if (params->ap_isolate)
1943 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1944 else
1945 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1946 }
1947
1948 if (params->ht_opmode >= 0) {
1949 sdata->vif.bss_conf.ht_operation_mode =
1950 (u16) params->ht_opmode;
1951 changed |= BSS_CHANGED_HT;
1952 }
1953
1954 if (params->p2p_ctwindow >= 0) {
1955 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1956 changed |= BSS_CHANGED_P2P_PS;
1957 }
1958
1959 if (params->p2p_opp_ps >= 0) {
1960 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1961 changed |= BSS_CHANGED_P2P_PS;
1962 }
1963
1964 ieee80211_bss_info_change_notify(sdata, changed);
1965
1966 return 0;
1967 }
1968
1969 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1970 struct net_device *dev,
1971 struct ieee80211_txq_params *params)
1972 {
1973 struct ieee80211_local *local = wiphy_priv(wiphy);
1974 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1975 struct ieee80211_tx_queue_params p;
1976
1977 if (!local->ops->conf_tx)
1978 return -EOPNOTSUPP;
1979
1980 if (local->hw.queues < IEEE80211_NUM_ACS)
1981 return -EOPNOTSUPP;
1982
1983 memset(&p, 0, sizeof(p));
1984 p.aifs = params->aifs;
1985 p.cw_max = params->cwmax;
1986 p.cw_min = params->cwmin;
1987 p.txop = params->txop;
1988
1989 /*
1990 * Setting tx queue params disables u-apsd because it's only
1991 * called in master mode.
1992 */
1993 p.uapsd = false;
1994
1995 sdata->tx_conf[params->ac] = p;
1996 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1997 wiphy_debug(local->hw.wiphy,
1998 "failed to set TX queue parameters for AC %d\n",
1999 params->ac);
2000 return -EINVAL;
2001 }
2002
2003 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2004
2005 return 0;
2006 }
2007
2008 #ifdef CONFIG_PM
2009 static int ieee80211_suspend(struct wiphy *wiphy,
2010 struct cfg80211_wowlan *wowlan)
2011 {
2012 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2013 }
2014
2015 static int ieee80211_resume(struct wiphy *wiphy)
2016 {
2017 return __ieee80211_resume(wiphy_priv(wiphy));
2018 }
2019 #else
2020 #define ieee80211_suspend NULL
2021 #define ieee80211_resume NULL
2022 #endif
2023
2024 static int ieee80211_scan(struct wiphy *wiphy,
2025 struct cfg80211_scan_request *req)
2026 {
2027 struct ieee80211_sub_if_data *sdata;
2028
2029 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2030
2031 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2032 case NL80211_IFTYPE_STATION:
2033 case NL80211_IFTYPE_ADHOC:
2034 case NL80211_IFTYPE_MESH_POINT:
2035 case NL80211_IFTYPE_P2P_CLIENT:
2036 case NL80211_IFTYPE_P2P_DEVICE:
2037 break;
2038 case NL80211_IFTYPE_P2P_GO:
2039 if (sdata->local->ops->hw_scan)
2040 break;
2041 /*
2042 * FIXME: implement NoA while scanning in software,
2043 * for now fall through to allow scanning only when
2044 * beaconing hasn't been configured yet
2045 */
2046 case NL80211_IFTYPE_AP:
2047 /*
2048 * If the scan has been forced (and the driver supports
2049 * forcing), don't care about being beaconing already.
2050 * This will create problems to the attached stations (e.g. all
2051 * the frames sent while scanning on other channel will be
2052 * lost)
2053 */
2054 if (sdata->u.ap.beacon &&
2055 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2056 !(req->flags & NL80211_SCAN_FLAG_AP)))
2057 return -EOPNOTSUPP;
2058 break;
2059 default:
2060 return -EOPNOTSUPP;
2061 }
2062
2063 return ieee80211_request_scan(sdata, req);
2064 }
2065
2066 static int
2067 ieee80211_sched_scan_start(struct wiphy *wiphy,
2068 struct net_device *dev,
2069 struct cfg80211_sched_scan_request *req)
2070 {
2071 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2072
2073 if (!sdata->local->ops->sched_scan_start)
2074 return -EOPNOTSUPP;
2075
2076 return ieee80211_request_sched_scan_start(sdata, req);
2077 }
2078
2079 static int
2080 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2081 {
2082 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2083
2084 if (!sdata->local->ops->sched_scan_stop)
2085 return -EOPNOTSUPP;
2086
2087 return ieee80211_request_sched_scan_stop(sdata);
2088 }
2089
2090 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2091 struct cfg80211_auth_request *req)
2092 {
2093 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2094 }
2095
2096 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2097 struct cfg80211_assoc_request *req)
2098 {
2099 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2100 }
2101
2102 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2103 struct cfg80211_deauth_request *req)
2104 {
2105 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2106 }
2107
2108 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2109 struct cfg80211_disassoc_request *req)
2110 {
2111 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2112 }
2113
2114 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2115 struct cfg80211_ibss_params *params)
2116 {
2117 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2118 }
2119
2120 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2121 {
2122 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2123 }
2124
2125 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2126 int rate[IEEE80211_NUM_BANDS])
2127 {
2128 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2129
2130 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2131 sizeof(int) * IEEE80211_NUM_BANDS);
2132
2133 return 0;
2134 }
2135
2136 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2137 {
2138 struct ieee80211_local *local = wiphy_priv(wiphy);
2139 int err;
2140
2141 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2142 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2143
2144 if (err)
2145 return err;
2146 }
2147
2148 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2149 err = drv_set_coverage_class(local, wiphy->coverage_class);
2150
2151 if (err)
2152 return err;
2153 }
2154
2155 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2156 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2157
2158 if (err)
2159 return err;
2160 }
2161
2162 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2163 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2164 return -EINVAL;
2165 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2166 }
2167 if (changed & WIPHY_PARAM_RETRY_LONG) {
2168 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2169 return -EINVAL;
2170 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2171 }
2172 if (changed &
2173 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2174 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2175
2176 return 0;
2177 }
2178
2179 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2180 struct wireless_dev *wdev,
2181 enum nl80211_tx_power_setting type, int mbm)
2182 {
2183 struct ieee80211_local *local = wiphy_priv(wiphy);
2184 struct ieee80211_sub_if_data *sdata;
2185
2186 if (wdev) {
2187 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2188
2189 switch (type) {
2190 case NL80211_TX_POWER_AUTOMATIC:
2191 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2192 break;
2193 case NL80211_TX_POWER_LIMITED:
2194 case NL80211_TX_POWER_FIXED:
2195 if (mbm < 0 || (mbm % 100))
2196 return -EOPNOTSUPP;
2197 sdata->user_power_level = MBM_TO_DBM(mbm);
2198 break;
2199 }
2200
2201 ieee80211_recalc_txpower(sdata);
2202
2203 return 0;
2204 }
2205
2206 switch (type) {
2207 case NL80211_TX_POWER_AUTOMATIC:
2208 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2209 break;
2210 case NL80211_TX_POWER_LIMITED:
2211 case NL80211_TX_POWER_FIXED:
2212 if (mbm < 0 || (mbm % 100))
2213 return -EOPNOTSUPP;
2214 local->user_power_level = MBM_TO_DBM(mbm);
2215 break;
2216 }
2217
2218 mutex_lock(&local->iflist_mtx);
2219 list_for_each_entry(sdata, &local->interfaces, list)
2220 sdata->user_power_level = local->user_power_level;
2221 list_for_each_entry(sdata, &local->interfaces, list)
2222 ieee80211_recalc_txpower(sdata);
2223 mutex_unlock(&local->iflist_mtx);
2224
2225 return 0;
2226 }
2227
2228 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2229 struct wireless_dev *wdev,
2230 int *dbm)
2231 {
2232 struct ieee80211_local *local = wiphy_priv(wiphy);
2233 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2234
2235 if (!local->use_chanctx)
2236 *dbm = local->hw.conf.power_level;
2237 else
2238 *dbm = sdata->vif.bss_conf.txpower;
2239
2240 return 0;
2241 }
2242
2243 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2244 const u8 *addr)
2245 {
2246 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2247
2248 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2249
2250 return 0;
2251 }
2252
2253 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2254 {
2255 struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257 drv_rfkill_poll(local);
2258 }
2259
2260 #ifdef CONFIG_NL80211_TESTMODE
2261 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2262 {
2263 struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265 if (!local->ops->testmode_cmd)
2266 return -EOPNOTSUPP;
2267
2268 return local->ops->testmode_cmd(&local->hw, data, len);
2269 }
2270
2271 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2272 struct sk_buff *skb,
2273 struct netlink_callback *cb,
2274 void *data, int len)
2275 {
2276 struct ieee80211_local *local = wiphy_priv(wiphy);
2277
2278 if (!local->ops->testmode_dump)
2279 return -EOPNOTSUPP;
2280
2281 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2282 }
2283 #endif
2284
2285 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2286 enum ieee80211_smps_mode smps_mode)
2287 {
2288 const u8 *ap;
2289 enum ieee80211_smps_mode old_req;
2290 int err;
2291
2292 lockdep_assert_held(&sdata->u.mgd.mtx);
2293
2294 old_req = sdata->u.mgd.req_smps;
2295 sdata->u.mgd.req_smps = smps_mode;
2296
2297 if (old_req == smps_mode &&
2298 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2299 return 0;
2300
2301 /*
2302 * If not associated, or current association is not an HT
2303 * association, there's no need to do anything, just store
2304 * the new value until we associate.
2305 */
2306 if (!sdata->u.mgd.associated ||
2307 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2308 return 0;
2309
2310 ap = sdata->u.mgd.associated->bssid;
2311
2312 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2313 if (sdata->u.mgd.powersave)
2314 smps_mode = IEEE80211_SMPS_DYNAMIC;
2315 else
2316 smps_mode = IEEE80211_SMPS_OFF;
2317 }
2318
2319 /* send SM PS frame to AP */
2320 err = ieee80211_send_smps_action(sdata, smps_mode,
2321 ap, ap);
2322 if (err)
2323 sdata->u.mgd.req_smps = old_req;
2324
2325 return err;
2326 }
2327
2328 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2329 bool enabled, int timeout)
2330 {
2331 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2332 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2333
2334 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2335 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2336 return -EOPNOTSUPP;
2337
2338 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2339 return -EOPNOTSUPP;
2340
2341 if (enabled == sdata->u.mgd.powersave &&
2342 timeout == local->dynamic_ps_forced_timeout)
2343 return 0;
2344
2345 sdata->u.mgd.powersave = enabled;
2346 local->dynamic_ps_forced_timeout = timeout;
2347
2348 /* no change, but if automatic follow powersave */
2349 mutex_lock(&sdata->u.mgd.mtx);
2350 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2351 mutex_unlock(&sdata->u.mgd.mtx);
2352
2353 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2354 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2355
2356 ieee80211_recalc_ps(local, -1);
2357 ieee80211_recalc_ps_vif(sdata);
2358
2359 return 0;
2360 }
2361
2362 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2363 struct net_device *dev,
2364 s32 rssi_thold, u32 rssi_hyst)
2365 {
2366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2367 struct ieee80211_vif *vif = &sdata->vif;
2368 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2369
2370 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2371 rssi_hyst == bss_conf->cqm_rssi_hyst)
2372 return 0;
2373
2374 bss_conf->cqm_rssi_thold = rssi_thold;
2375 bss_conf->cqm_rssi_hyst = rssi_hyst;
2376
2377 /* tell the driver upon association, unless already associated */
2378 if (sdata->u.mgd.associated &&
2379 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2380 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2381
2382 return 0;
2383 }
2384
2385 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2386 struct net_device *dev,
2387 const u8 *addr,
2388 const struct cfg80211_bitrate_mask *mask)
2389 {
2390 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2391 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2392 int i, ret;
2393
2394 if (!ieee80211_sdata_running(sdata))
2395 return -ENETDOWN;
2396
2397 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2398 ret = drv_set_bitrate_mask(local, sdata, mask);
2399 if (ret)
2400 return ret;
2401 }
2402
2403 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2404 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2405 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2406 sizeof(mask->control[i].mcs));
2407 }
2408
2409 return 0;
2410 }
2411
2412 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2413 struct ieee80211_sub_if_data *sdata,
2414 struct ieee80211_channel *channel,
2415 unsigned int duration, u64 *cookie,
2416 struct sk_buff *txskb,
2417 enum ieee80211_roc_type type)
2418 {
2419 struct ieee80211_roc_work *roc, *tmp;
2420 bool queued = false;
2421 int ret;
2422
2423 lockdep_assert_held(&local->mtx);
2424
2425 if (local->use_chanctx && !local->ops->remain_on_channel)
2426 return -EOPNOTSUPP;
2427
2428 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2429 if (!roc)
2430 return -ENOMEM;
2431
2432 roc->chan = channel;
2433 roc->duration = duration;
2434 roc->req_duration = duration;
2435 roc->frame = txskb;
2436 roc->type = type;
2437 roc->mgmt_tx_cookie = (unsigned long)txskb;
2438 roc->sdata = sdata;
2439 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2440 INIT_LIST_HEAD(&roc->dependents);
2441
2442 /* if there's one pending or we're scanning, queue this one */
2443 if (!list_empty(&local->roc_list) ||
2444 local->scanning || local->radar_detect_enabled)
2445 goto out_check_combine;
2446
2447 /* if not HW assist, just queue & schedule work */
2448 if (!local->ops->remain_on_channel) {
2449 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2450 goto out_queue;
2451 }
2452
2453 /* otherwise actually kick it off here (for error handling) */
2454
2455 /*
2456 * If the duration is zero, then the driver
2457 * wouldn't actually do anything. Set it to
2458 * 10 for now.
2459 *
2460 * TODO: cancel the off-channel operation
2461 * when we get the SKB's TX status and
2462 * the wait time was zero before.
2463 */
2464 if (!duration)
2465 duration = 10;
2466
2467 ret = drv_remain_on_channel(local, sdata, channel, duration, type);
2468 if (ret) {
2469 kfree(roc);
2470 return ret;
2471 }
2472
2473 roc->started = true;
2474 goto out_queue;
2475
2476 out_check_combine:
2477 list_for_each_entry(tmp, &local->roc_list, list) {
2478 if (tmp->chan != channel || tmp->sdata != sdata)
2479 continue;
2480
2481 /*
2482 * Extend this ROC if possible:
2483 *
2484 * If it hasn't started yet, just increase the duration
2485 * and add the new one to the list of dependents.
2486 * If the type of the new ROC has higher priority, modify the
2487 * type of the previous one to match that of the new one.
2488 */
2489 if (!tmp->started) {
2490 list_add_tail(&roc->list, &tmp->dependents);
2491 tmp->duration = max(tmp->duration, roc->duration);
2492 tmp->type = max(tmp->type, roc->type);
2493 queued = true;
2494 break;
2495 }
2496
2497 /* If it has already started, it's more difficult ... */
2498 if (local->ops->remain_on_channel) {
2499 unsigned long j = jiffies;
2500
2501 /*
2502 * In the offloaded ROC case, if it hasn't begun, add
2503 * this new one to the dependent list to be handled
2504 * when the master one begins. If it has begun,
2505 * check that there's still a minimum time left and
2506 * if so, start this one, transmitting the frame, but
2507 * add it to the list directly after this one with
2508 * a reduced time so we'll ask the driver to execute
2509 * it right after finishing the previous one, in the
2510 * hope that it'll also be executed right afterwards,
2511 * effectively extending the old one.
2512 * If there's no minimum time left, just add it to the
2513 * normal list.
2514 * TODO: the ROC type is ignored here, assuming that it
2515 * is better to immediately use the current ROC.
2516 */
2517 if (!tmp->hw_begun) {
2518 list_add_tail(&roc->list, &tmp->dependents);
2519 queued = true;
2520 break;
2521 }
2522
2523 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2524 tmp->hw_start_time +
2525 msecs_to_jiffies(tmp->duration))) {
2526 int new_dur;
2527
2528 ieee80211_handle_roc_started(roc);
2529
2530 new_dur = roc->duration -
2531 jiffies_to_msecs(tmp->hw_start_time +
2532 msecs_to_jiffies(
2533 tmp->duration) -
2534 j);
2535
2536 if (new_dur > 0) {
2537 /* add right after tmp */
2538 list_add(&roc->list, &tmp->list);
2539 } else {
2540 list_add_tail(&roc->list,
2541 &tmp->dependents);
2542 }
2543 queued = true;
2544 }
2545 } else if (del_timer_sync(&tmp->work.timer)) {
2546 unsigned long new_end;
2547
2548 /*
2549 * In the software ROC case, cancel the timer, if
2550 * that fails then the finish work is already
2551 * queued/pending and thus we queue the new ROC
2552 * normally, if that succeeds then we can extend
2553 * the timer duration and TX the frame (if any.)
2554 */
2555
2556 list_add_tail(&roc->list, &tmp->dependents);
2557 queued = true;
2558
2559 new_end = jiffies + msecs_to_jiffies(roc->duration);
2560
2561 /* ok, it was started & we canceled timer */
2562 if (time_after(new_end, tmp->work.timer.expires))
2563 mod_timer(&tmp->work.timer, new_end);
2564 else
2565 add_timer(&tmp->work.timer);
2566
2567 ieee80211_handle_roc_started(roc);
2568 }
2569 break;
2570 }
2571
2572 out_queue:
2573 if (!queued)
2574 list_add_tail(&roc->list, &local->roc_list);
2575
2576 /*
2577 * cookie is either the roc cookie (for normal roc)
2578 * or the SKB (for mgmt TX)
2579 */
2580 if (!txskb) {
2581 /* local->mtx protects this */
2582 local->roc_cookie_counter++;
2583 roc->cookie = local->roc_cookie_counter;
2584 /* wow, you wrapped 64 bits ... more likely a bug */
2585 if (WARN_ON(roc->cookie == 0)) {
2586 roc->cookie = 1;
2587 local->roc_cookie_counter++;
2588 }
2589 *cookie = roc->cookie;
2590 } else {
2591 *cookie = (unsigned long)txskb;
2592 }
2593
2594 return 0;
2595 }
2596
2597 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2598 struct wireless_dev *wdev,
2599 struct ieee80211_channel *chan,
2600 unsigned int duration,
2601 u64 *cookie)
2602 {
2603 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2604 struct ieee80211_local *local = sdata->local;
2605 int ret;
2606
2607 mutex_lock(&local->mtx);
2608 ret = ieee80211_start_roc_work(local, sdata, chan,
2609 duration, cookie, NULL,
2610 IEEE80211_ROC_TYPE_NORMAL);
2611 mutex_unlock(&local->mtx);
2612
2613 return ret;
2614 }
2615
2616 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2617 u64 cookie, bool mgmt_tx)
2618 {
2619 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2620 int ret;
2621
2622 mutex_lock(&local->mtx);
2623 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2624 struct ieee80211_roc_work *dep, *tmp2;
2625
2626 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2627 if (!mgmt_tx && dep->cookie != cookie)
2628 continue;
2629 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2630 continue;
2631 /* found dependent item -- just remove it */
2632 list_del(&dep->list);
2633 mutex_unlock(&local->mtx);
2634
2635 ieee80211_roc_notify_destroy(dep);
2636 return 0;
2637 }
2638
2639 if (!mgmt_tx && roc->cookie != cookie)
2640 continue;
2641 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2642 continue;
2643
2644 found = roc;
2645 break;
2646 }
2647
2648 if (!found) {
2649 mutex_unlock(&local->mtx);
2650 return -ENOENT;
2651 }
2652
2653 /*
2654 * We found the item to cancel, so do that. Note that it
2655 * may have dependents, which we also cancel (and send
2656 * the expired signal for.) Not doing so would be quite
2657 * tricky here, but we may need to fix it later.
2658 */
2659
2660 if (local->ops->remain_on_channel) {
2661 if (found->started) {
2662 ret = drv_cancel_remain_on_channel(local);
2663 if (WARN_ON_ONCE(ret)) {
2664 mutex_unlock(&local->mtx);
2665 return ret;
2666 }
2667 }
2668
2669 list_del(&found->list);
2670
2671 if (found->started)
2672 ieee80211_start_next_roc(local);
2673 mutex_unlock(&local->mtx);
2674
2675 ieee80211_roc_notify_destroy(found);
2676 } else {
2677 /* work may be pending so use it all the time */
2678 found->abort = true;
2679 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2680
2681 mutex_unlock(&local->mtx);
2682
2683 /* work will clean up etc */
2684 flush_delayed_work(&found->work);
2685 }
2686
2687 return 0;
2688 }
2689
2690 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2691 struct wireless_dev *wdev,
2692 u64 cookie)
2693 {
2694 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2695 struct ieee80211_local *local = sdata->local;
2696
2697 return ieee80211_cancel_roc(local, cookie, false);
2698 }
2699
2700 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2701 struct net_device *dev,
2702 struct cfg80211_chan_def *chandef)
2703 {
2704 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2705 struct ieee80211_local *local = sdata->local;
2706 unsigned long timeout;
2707 int err;
2708
2709 if (!list_empty(&local->roc_list) || local->scanning)
2710 return -EBUSY;
2711
2712 /* whatever, but channel contexts should not complain about that one */
2713 sdata->smps_mode = IEEE80211_SMPS_OFF;
2714 sdata->needed_rx_chains = local->rx_chains;
2715 sdata->radar_required = true;
2716
2717 mutex_lock(&local->iflist_mtx);
2718 err = ieee80211_vif_use_channel(sdata, chandef,
2719 IEEE80211_CHANCTX_SHARED);
2720 mutex_unlock(&local->iflist_mtx);
2721 if (err)
2722 return err;
2723
2724 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2725 ieee80211_queue_delayed_work(&sdata->local->hw,
2726 &sdata->dfs_cac_timer_work, timeout);
2727
2728 return 0;
2729 }
2730
2731 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2732 struct ieee80211_channel *chan, bool offchan,
2733 unsigned int wait, const u8 *buf, size_t len,
2734 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2735 {
2736 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2737 struct ieee80211_local *local = sdata->local;
2738 struct sk_buff *skb;
2739 struct sta_info *sta;
2740 const struct ieee80211_mgmt *mgmt = (void *)buf;
2741 bool need_offchan = false;
2742 u32 flags;
2743 int ret;
2744
2745 if (dont_wait_for_ack)
2746 flags = IEEE80211_TX_CTL_NO_ACK;
2747 else
2748 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2749 IEEE80211_TX_CTL_REQ_TX_STATUS;
2750
2751 if (no_cck)
2752 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2753
2754 switch (sdata->vif.type) {
2755 case NL80211_IFTYPE_ADHOC:
2756 if (!sdata->vif.bss_conf.ibss_joined)
2757 need_offchan = true;
2758 /* fall through */
2759 #ifdef CONFIG_MAC80211_MESH
2760 case NL80211_IFTYPE_MESH_POINT:
2761 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2762 !sdata->u.mesh.mesh_id_len)
2763 need_offchan = true;
2764 /* fall through */
2765 #endif
2766 case NL80211_IFTYPE_AP:
2767 case NL80211_IFTYPE_AP_VLAN:
2768 case NL80211_IFTYPE_P2P_GO:
2769 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2770 !ieee80211_vif_is_mesh(&sdata->vif) &&
2771 !rcu_access_pointer(sdata->bss->beacon))
2772 need_offchan = true;
2773 if (!ieee80211_is_action(mgmt->frame_control) ||
2774 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2775 break;
2776 rcu_read_lock();
2777 sta = sta_info_get(sdata, mgmt->da);
2778 rcu_read_unlock();
2779 if (!sta)
2780 return -ENOLINK;
2781 break;
2782 case NL80211_IFTYPE_STATION:
2783 case NL80211_IFTYPE_P2P_CLIENT:
2784 if (!sdata->u.mgd.associated)
2785 need_offchan = true;
2786 break;
2787 case NL80211_IFTYPE_P2P_DEVICE:
2788 need_offchan = true;
2789 break;
2790 default:
2791 return -EOPNOTSUPP;
2792 }
2793
2794 mutex_lock(&local->mtx);
2795
2796 /* Check if the operating channel is the requested channel */
2797 if (!need_offchan) {
2798 struct ieee80211_chanctx_conf *chanctx_conf;
2799
2800 rcu_read_lock();
2801 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2802
2803 if (chanctx_conf)
2804 need_offchan = chan != chanctx_conf->def.chan;
2805 else
2806 need_offchan = true;
2807 rcu_read_unlock();
2808 }
2809
2810 if (need_offchan && !offchan) {
2811 ret = -EBUSY;
2812 goto out_unlock;
2813 }
2814
2815 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2816 if (!skb) {
2817 ret = -ENOMEM;
2818 goto out_unlock;
2819 }
2820 skb_reserve(skb, local->hw.extra_tx_headroom);
2821
2822 memcpy(skb_put(skb, len), buf, len);
2823
2824 IEEE80211_SKB_CB(skb)->flags = flags;
2825
2826 skb->dev = sdata->dev;
2827
2828 if (!need_offchan) {
2829 *cookie = (unsigned long) skb;
2830 ieee80211_tx_skb(sdata, skb);
2831 ret = 0;
2832 goto out_unlock;
2833 }
2834
2835 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2836 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2837 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2838 IEEE80211_SKB_CB(skb)->hw_queue =
2839 local->hw.offchannel_tx_hw_queue;
2840
2841 /* This will handle all kinds of coalescing and immediate TX */
2842 ret = ieee80211_start_roc_work(local, sdata, chan,
2843 wait, cookie, skb,
2844 IEEE80211_ROC_TYPE_MGMT_TX);
2845 if (ret)
2846 kfree_skb(skb);
2847 out_unlock:
2848 mutex_unlock(&local->mtx);
2849 return ret;
2850 }
2851
2852 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2853 struct wireless_dev *wdev,
2854 u64 cookie)
2855 {
2856 struct ieee80211_local *local = wiphy_priv(wiphy);
2857
2858 return ieee80211_cancel_roc(local, cookie, true);
2859 }
2860
2861 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2862 struct wireless_dev *wdev,
2863 u16 frame_type, bool reg)
2864 {
2865 struct ieee80211_local *local = wiphy_priv(wiphy);
2866 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2867
2868 switch (frame_type) {
2869 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2870 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2871 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2872
2873 if (reg)
2874 ifibss->auth_frame_registrations++;
2875 else
2876 ifibss->auth_frame_registrations--;
2877 }
2878 break;
2879 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2880 if (reg)
2881 local->probe_req_reg++;
2882 else
2883 local->probe_req_reg--;
2884
2885 if (!local->open_count)
2886 break;
2887
2888 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2889 break;
2890 default:
2891 break;
2892 }
2893 }
2894
2895 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2896 {
2897 struct ieee80211_local *local = wiphy_priv(wiphy);
2898
2899 if (local->started)
2900 return -EOPNOTSUPP;
2901
2902 return drv_set_antenna(local, tx_ant, rx_ant);
2903 }
2904
2905 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2906 {
2907 struct ieee80211_local *local = wiphy_priv(wiphy);
2908
2909 return drv_get_antenna(local, tx_ant, rx_ant);
2910 }
2911
2912 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2913 {
2914 struct ieee80211_local *local = wiphy_priv(wiphy);
2915
2916 return drv_set_ringparam(local, tx, rx);
2917 }
2918
2919 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2920 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2921 {
2922 struct ieee80211_local *local = wiphy_priv(wiphy);
2923
2924 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2925 }
2926
2927 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2928 struct net_device *dev,
2929 struct cfg80211_gtk_rekey_data *data)
2930 {
2931 struct ieee80211_local *local = wiphy_priv(wiphy);
2932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2933
2934 if (!local->ops->set_rekey_data)
2935 return -EOPNOTSUPP;
2936
2937 drv_set_rekey_data(local, sdata, data);
2938
2939 return 0;
2940 }
2941
2942 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2943 {
2944 u8 *pos = (void *)skb_put(skb, 7);
2945
2946 *pos++ = WLAN_EID_EXT_CAPABILITY;
2947 *pos++ = 5; /* len */
2948 *pos++ = 0x0;
2949 *pos++ = 0x0;
2950 *pos++ = 0x0;
2951 *pos++ = 0x0;
2952 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2953 }
2954
2955 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2956 {
2957 struct ieee80211_local *local = sdata->local;
2958 u16 capab;
2959
2960 capab = 0;
2961 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2962 return capab;
2963
2964 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2965 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2966 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2967 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2968
2969 return capab;
2970 }
2971
2972 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2973 u8 *peer, u8 *bssid)
2974 {
2975 struct ieee80211_tdls_lnkie *lnkid;
2976
2977 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2978
2979 lnkid->ie_type = WLAN_EID_LINK_ID;
2980 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2981
2982 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2983 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2984 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2985 }
2986
2987 static int
2988 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2989 u8 *peer, u8 action_code, u8 dialog_token,
2990 u16 status_code, struct sk_buff *skb)
2991 {
2992 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2993 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2994 struct ieee80211_tdls_data *tf;
2995
2996 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2997
2998 memcpy(tf->da, peer, ETH_ALEN);
2999 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
3000 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
3001 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
3002
3003 switch (action_code) {
3004 case WLAN_TDLS_SETUP_REQUEST:
3005 tf->category = WLAN_CATEGORY_TDLS;
3006 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
3007
3008 skb_put(skb, sizeof(tf->u.setup_req));
3009 tf->u.setup_req.dialog_token = dialog_token;
3010 tf->u.setup_req.capability =
3011 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3012
3013 ieee80211_add_srates_ie(sdata, skb, false, band);
3014 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3015 ieee80211_tdls_add_ext_capab(skb);
3016 break;
3017 case WLAN_TDLS_SETUP_RESPONSE:
3018 tf->category = WLAN_CATEGORY_TDLS;
3019 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
3020
3021 skb_put(skb, sizeof(tf->u.setup_resp));
3022 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
3023 tf->u.setup_resp.dialog_token = dialog_token;
3024 tf->u.setup_resp.capability =
3025 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3026
3027 ieee80211_add_srates_ie(sdata, skb, false, band);
3028 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3029 ieee80211_tdls_add_ext_capab(skb);
3030 break;
3031 case WLAN_TDLS_SETUP_CONFIRM:
3032 tf->category = WLAN_CATEGORY_TDLS;
3033 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
3034
3035 skb_put(skb, sizeof(tf->u.setup_cfm));
3036 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
3037 tf->u.setup_cfm.dialog_token = dialog_token;
3038 break;
3039 case WLAN_TDLS_TEARDOWN:
3040 tf->category = WLAN_CATEGORY_TDLS;
3041 tf->action_code = WLAN_TDLS_TEARDOWN;
3042
3043 skb_put(skb, sizeof(tf->u.teardown));
3044 tf->u.teardown.reason_code = cpu_to_le16(status_code);
3045 break;
3046 case WLAN_TDLS_DISCOVERY_REQUEST:
3047 tf->category = WLAN_CATEGORY_TDLS;
3048 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
3049
3050 skb_put(skb, sizeof(tf->u.discover_req));
3051 tf->u.discover_req.dialog_token = dialog_token;
3052 break;
3053 default:
3054 return -EINVAL;
3055 }
3056
3057 return 0;
3058 }
3059
3060 static int
3061 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3062 u8 *peer, u8 action_code, u8 dialog_token,
3063 u16 status_code, struct sk_buff *skb)
3064 {
3065 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3066 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3067 struct ieee80211_mgmt *mgmt;
3068
3069 mgmt = (void *)skb_put(skb, 24);
3070 memset(mgmt, 0, 24);
3071 memcpy(mgmt->da, peer, ETH_ALEN);
3072 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3073 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3074
3075 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3076 IEEE80211_STYPE_ACTION);
3077
3078 switch (action_code) {
3079 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3080 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3081 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3082 mgmt->u.action.u.tdls_discover_resp.action_code =
3083 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3084 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3085 dialog_token;
3086 mgmt->u.action.u.tdls_discover_resp.capability =
3087 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3088
3089 ieee80211_add_srates_ie(sdata, skb, false, band);
3090 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3091 ieee80211_tdls_add_ext_capab(skb);
3092 break;
3093 default:
3094 return -EINVAL;
3095 }
3096
3097 return 0;
3098 }
3099
3100 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3101 u8 *peer, u8 action_code, u8 dialog_token,
3102 u16 status_code, const u8 *extra_ies,
3103 size_t extra_ies_len)
3104 {
3105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3106 struct ieee80211_local *local = sdata->local;
3107 struct sk_buff *skb = NULL;
3108 bool send_direct;
3109 int ret;
3110
3111 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3112 return -ENOTSUPP;
3113
3114 /* make sure we are in managed mode, and associated */
3115 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3116 !sdata->u.mgd.associated)
3117 return -EINVAL;
3118
3119 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3120 action_code, peer);
3121
3122 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3123 max(sizeof(struct ieee80211_mgmt),
3124 sizeof(struct ieee80211_tdls_data)) +
3125 50 + /* supported rates */
3126 7 + /* ext capab */
3127 extra_ies_len +
3128 sizeof(struct ieee80211_tdls_lnkie));
3129 if (!skb)
3130 return -ENOMEM;
3131
3132 skb_reserve(skb, local->hw.extra_tx_headroom);
3133
3134 switch (action_code) {
3135 case WLAN_TDLS_SETUP_REQUEST:
3136 case WLAN_TDLS_SETUP_RESPONSE:
3137 case WLAN_TDLS_SETUP_CONFIRM:
3138 case WLAN_TDLS_TEARDOWN:
3139 case WLAN_TDLS_DISCOVERY_REQUEST:
3140 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3141 action_code, dialog_token,
3142 status_code, skb);
3143 send_direct = false;
3144 break;
3145 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3146 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3147 dialog_token, status_code,
3148 skb);
3149 send_direct = true;
3150 break;
3151 default:
3152 ret = -ENOTSUPP;
3153 break;
3154 }
3155
3156 if (ret < 0)
3157 goto fail;
3158
3159 if (extra_ies_len)
3160 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3161
3162 /* the TDLS link IE is always added last */
3163 switch (action_code) {
3164 case WLAN_TDLS_SETUP_REQUEST:
3165 case WLAN_TDLS_SETUP_CONFIRM:
3166 case WLAN_TDLS_TEARDOWN:
3167 case WLAN_TDLS_DISCOVERY_REQUEST:
3168 /* we are the initiator */
3169 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3170 sdata->u.mgd.bssid);
3171 break;
3172 case WLAN_TDLS_SETUP_RESPONSE:
3173 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3174 /* we are the responder */
3175 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3176 sdata->u.mgd.bssid);
3177 break;
3178 default:
3179 ret = -ENOTSUPP;
3180 goto fail;
3181 }
3182
3183 if (send_direct) {
3184 ieee80211_tx_skb(sdata, skb);
3185 return 0;
3186 }
3187
3188 /*
3189 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3190 * we should default to AC_VI.
3191 */
3192 switch (action_code) {
3193 case WLAN_TDLS_SETUP_REQUEST:
3194 case WLAN_TDLS_SETUP_RESPONSE:
3195 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3196 skb->priority = 2;
3197 break;
3198 default:
3199 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3200 skb->priority = 5;
3201 break;
3202 }
3203
3204 /* disable bottom halves when entering the Tx path */
3205 local_bh_disable();
3206 ret = ieee80211_subif_start_xmit(skb, dev);
3207 local_bh_enable();
3208
3209 return ret;
3210
3211 fail:
3212 dev_kfree_skb(skb);
3213 return ret;
3214 }
3215
3216 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3217 u8 *peer, enum nl80211_tdls_operation oper)
3218 {
3219 struct sta_info *sta;
3220 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3221
3222 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3223 return -ENOTSUPP;
3224
3225 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3226 return -EINVAL;
3227
3228 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3229
3230 switch (oper) {
3231 case NL80211_TDLS_ENABLE_LINK:
3232 rcu_read_lock();
3233 sta = sta_info_get(sdata, peer);
3234 if (!sta) {
3235 rcu_read_unlock();
3236 return -ENOLINK;
3237 }
3238
3239 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3240 rcu_read_unlock();
3241 break;
3242 case NL80211_TDLS_DISABLE_LINK:
3243 return sta_info_destroy_addr(sdata, peer);
3244 case NL80211_TDLS_TEARDOWN:
3245 case NL80211_TDLS_SETUP:
3246 case NL80211_TDLS_DISCOVERY_REQ:
3247 /* We don't support in-driver setup/teardown/discovery */
3248 return -ENOTSUPP;
3249 default:
3250 return -ENOTSUPP;
3251 }
3252
3253 return 0;
3254 }
3255
3256 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3257 const u8 *peer, u64 *cookie)
3258 {
3259 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3260 struct ieee80211_local *local = sdata->local;
3261 struct ieee80211_qos_hdr *nullfunc;
3262 struct sk_buff *skb;
3263 int size = sizeof(*nullfunc);
3264 __le16 fc;
3265 bool qos;
3266 struct ieee80211_tx_info *info;
3267 struct sta_info *sta;
3268 struct ieee80211_chanctx_conf *chanctx_conf;
3269 enum ieee80211_band band;
3270
3271 rcu_read_lock();
3272 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3273 if (WARN_ON(!chanctx_conf)) {
3274 rcu_read_unlock();
3275 return -EINVAL;
3276 }
3277 band = chanctx_conf->def.chan->band;
3278 sta = sta_info_get(sdata, peer);
3279 if (sta) {
3280 qos = test_sta_flag(sta, WLAN_STA_WME);
3281 } else {
3282 rcu_read_unlock();
3283 return -ENOLINK;
3284 }
3285
3286 if (qos) {
3287 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3288 IEEE80211_STYPE_QOS_NULLFUNC |
3289 IEEE80211_FCTL_FROMDS);
3290 } else {
3291 size -= 2;
3292 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3293 IEEE80211_STYPE_NULLFUNC |
3294 IEEE80211_FCTL_FROMDS);
3295 }
3296
3297 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3298 if (!skb) {
3299 rcu_read_unlock();
3300 return -ENOMEM;
3301 }
3302
3303 skb->dev = dev;
3304
3305 skb_reserve(skb, local->hw.extra_tx_headroom);
3306
3307 nullfunc = (void *) skb_put(skb, size);
3308 nullfunc->frame_control = fc;
3309 nullfunc->duration_id = 0;
3310 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3311 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3312 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3313 nullfunc->seq_ctrl = 0;
3314
3315 info = IEEE80211_SKB_CB(skb);
3316
3317 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3318 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3319
3320 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3321 skb->priority = 7;
3322 if (qos)
3323 nullfunc->qos_ctrl = cpu_to_le16(7);
3324
3325 local_bh_disable();
3326 ieee80211_xmit(sdata, skb, band);
3327 local_bh_enable();
3328 rcu_read_unlock();
3329
3330 *cookie = (unsigned long) skb;
3331 return 0;
3332 }
3333
3334 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3335 struct wireless_dev *wdev,
3336 struct cfg80211_chan_def *chandef)
3337 {
3338 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3339 struct ieee80211_local *local = wiphy_priv(wiphy);
3340 struct ieee80211_chanctx_conf *chanctx_conf;
3341 int ret = -ENODATA;
3342
3343 rcu_read_lock();
3344 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3345 if (chanctx_conf) {
3346 *chandef = chanctx_conf->def;
3347 ret = 0;
3348 } else if (local->open_count > 0 &&
3349 local->open_count == local->monitors &&
3350 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3351 if (local->use_chanctx)
3352 *chandef = local->monitor_chandef;
3353 else
3354 cfg80211_chandef_create(chandef,
3355 local->_oper_channel,
3356 local->_oper_channel_type);
3357 ret = 0;
3358 }
3359 rcu_read_unlock();
3360
3361 return ret;
3362 }
3363
3364 #ifdef CONFIG_PM
3365 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3366 {
3367 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3368 }
3369 #endif
3370
3371 struct cfg80211_ops mac80211_config_ops = {
3372 .add_virtual_intf = ieee80211_add_iface,
3373 .del_virtual_intf = ieee80211_del_iface,
3374 .change_virtual_intf = ieee80211_change_iface,
3375 .start_p2p_device = ieee80211_start_p2p_device,
3376 .stop_p2p_device = ieee80211_stop_p2p_device,
3377 .add_key = ieee80211_add_key,
3378 .del_key = ieee80211_del_key,
3379 .get_key = ieee80211_get_key,
3380 .set_default_key = ieee80211_config_default_key,
3381 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3382 .start_ap = ieee80211_start_ap,
3383 .change_beacon = ieee80211_change_beacon,
3384 .stop_ap = ieee80211_stop_ap,
3385 .add_station = ieee80211_add_station,
3386 .del_station = ieee80211_del_station,
3387 .change_station = ieee80211_change_station,
3388 .get_station = ieee80211_get_station,
3389 .dump_station = ieee80211_dump_station,
3390 .dump_survey = ieee80211_dump_survey,
3391 #ifdef CONFIG_MAC80211_MESH
3392 .add_mpath = ieee80211_add_mpath,
3393 .del_mpath = ieee80211_del_mpath,
3394 .change_mpath = ieee80211_change_mpath,
3395 .get_mpath = ieee80211_get_mpath,
3396 .dump_mpath = ieee80211_dump_mpath,
3397 .update_mesh_config = ieee80211_update_mesh_config,
3398 .get_mesh_config = ieee80211_get_mesh_config,
3399 .join_mesh = ieee80211_join_mesh,
3400 .leave_mesh = ieee80211_leave_mesh,
3401 #endif
3402 .change_bss = ieee80211_change_bss,
3403 .set_txq_params = ieee80211_set_txq_params,
3404 .set_monitor_channel = ieee80211_set_monitor_channel,
3405 .suspend = ieee80211_suspend,
3406 .resume = ieee80211_resume,
3407 .scan = ieee80211_scan,
3408 .sched_scan_start = ieee80211_sched_scan_start,
3409 .sched_scan_stop = ieee80211_sched_scan_stop,
3410 .auth = ieee80211_auth,
3411 .assoc = ieee80211_assoc,
3412 .deauth = ieee80211_deauth,
3413 .disassoc = ieee80211_disassoc,
3414 .join_ibss = ieee80211_join_ibss,
3415 .leave_ibss = ieee80211_leave_ibss,
3416 .set_mcast_rate = ieee80211_set_mcast_rate,
3417 .set_wiphy_params = ieee80211_set_wiphy_params,
3418 .set_tx_power = ieee80211_set_tx_power,
3419 .get_tx_power = ieee80211_get_tx_power,
3420 .set_wds_peer = ieee80211_set_wds_peer,
3421 .rfkill_poll = ieee80211_rfkill_poll,
3422 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3423 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3424 .set_power_mgmt = ieee80211_set_power_mgmt,
3425 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3426 .remain_on_channel = ieee80211_remain_on_channel,
3427 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3428 .mgmt_tx = ieee80211_mgmt_tx,
3429 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3430 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3431 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3432 .set_antenna = ieee80211_set_antenna,
3433 .get_antenna = ieee80211_get_antenna,
3434 .set_ringparam = ieee80211_set_ringparam,
3435 .get_ringparam = ieee80211_get_ringparam,
3436 .set_rekey_data = ieee80211_set_rekey_data,
3437 .tdls_oper = ieee80211_tdls_oper,
3438 .tdls_mgmt = ieee80211_tdls_mgmt,
3439 .probe_client = ieee80211_probe_client,
3440 .set_noack_map = ieee80211_set_noack_map,
3441 #ifdef CONFIG_PM
3442 .set_wakeup = ieee80211_set_wakeup,
3443 #endif
3444 .get_et_sset_count = ieee80211_get_et_sset_count,
3445 .get_et_stats = ieee80211_get_et_stats,
3446 .get_et_strings = ieee80211_get_et_strings,
3447 .get_channel = ieee80211_cfg_get_channel,
3448 .start_radar_detection = ieee80211_start_radar_detection,
3449 };
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