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proc: Move proc_fd() to fs/proc/fd.h
[linux-2.6.git] / net / mac80211 / cfg.c
blobfb306814576affa7e636fa53353d29ba1e39b668
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);
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 sta_info_flush_cleanup(sdata);
1041
1042 sdata->vif.bss_conf.enable_beacon = false;
1043 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1044 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1045
1046 drv_stop_ap(sdata->local, sdata);
1047
1048 /* free all potentially still buffered bcast frames */
1049 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1050 skb_queue_purge(&sdata->u.ap.ps.bc_buf);
1051
1052 ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1053 ieee80211_vif_release_channel(sdata);
1054
1055 return 0;
1056 }
1057
1058 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1059 struct iapp_layer2_update {
1060 u8 da[ETH_ALEN]; /* broadcast */
1061 u8 sa[ETH_ALEN]; /* STA addr */
1062 __be16 len; /* 6 */
1063 u8 dsap; /* 0 */
1064 u8 ssap; /* 0 */
1065 u8 control;
1066 u8 xid_info[3];
1067 } __packed;
1068
1069 static void ieee80211_send_layer2_update(struct sta_info *sta)
1070 {
1071 struct iapp_layer2_update *msg;
1072 struct sk_buff *skb;
1073
1074 /* Send Level 2 Update Frame to update forwarding tables in layer 2
1075 * bridge devices */
1076
1077 skb = dev_alloc_skb(sizeof(*msg));
1078 if (!skb)
1079 return;
1080 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1081
1082 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1083 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1084
1085 eth_broadcast_addr(msg->da);
1086 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1087 msg->len = htons(6);
1088 msg->dsap = 0;
1089 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
1090 msg->control = 0xaf; /* XID response lsb.1111F101.
1091 * F=0 (no poll command; unsolicited frame) */
1092 msg->xid_info[0] = 0x81; /* XID format identifier */
1093 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
1094 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
1095
1096 skb->dev = sta->sdata->dev;
1097 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1098 memset(skb->cb, 0, sizeof(skb->cb));
1099 netif_rx_ni(skb);
1100 }
1101
1102 static int sta_apply_auth_flags(struct ieee80211_local *local,
1103 struct sta_info *sta,
1104 u32 mask, u32 set)
1105 {
1106 int ret;
1107
1108 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1109 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1110 !test_sta_flag(sta, WLAN_STA_AUTH)) {
1111 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1112 if (ret)
1113 return ret;
1114 }
1115
1116 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1117 set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1118 !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1119 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1120 if (ret)
1121 return ret;
1122 }
1123
1124 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1125 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1126 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1127 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1128 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1129 else
1130 ret = 0;
1131 if (ret)
1132 return ret;
1133 }
1134
1135 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1136 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1137 test_sta_flag(sta, WLAN_STA_ASSOC)) {
1138 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1139 if (ret)
1140 return ret;
1141 }
1142
1143 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1144 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1145 test_sta_flag(sta, WLAN_STA_AUTH)) {
1146 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1147 if (ret)
1148 return ret;
1149 }
1150
1151 return 0;
1152 }
1153
1154 static int sta_apply_parameters(struct ieee80211_local *local,
1155 struct sta_info *sta,
1156 struct station_parameters *params)
1157 {
1158 int ret = 0;
1159 u32 rates;
1160 int i, j;
1161 struct ieee80211_supported_band *sband;
1162 struct ieee80211_sub_if_data *sdata = sta->sdata;
1163 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1164 u32 mask, set;
1165
1166 sband = local->hw.wiphy->bands[band];
1167
1168 mask = params->sta_flags_mask;
1169 set = params->sta_flags_set;
1170
1171 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1172 /*
1173 * In mesh mode, ASSOCIATED isn't part of the nl80211
1174 * API but must follow AUTHENTICATED for driver state.
1175 */
1176 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1177 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1178 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1179 set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1180 }
1181
1182 ret = sta_apply_auth_flags(local, sta, mask, set);
1183 if (ret)
1184 return ret;
1185
1186 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1187 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1188 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1189 else
1190 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1191 }
1192
1193 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1194 if (set & BIT(NL80211_STA_FLAG_WME)) {
1195 set_sta_flag(sta, WLAN_STA_WME);
1196 sta->sta.wme = true;
1197 } else {
1198 clear_sta_flag(sta, WLAN_STA_WME);
1199 sta->sta.wme = false;
1200 }
1201 }
1202
1203 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1204 if (set & BIT(NL80211_STA_FLAG_MFP))
1205 set_sta_flag(sta, WLAN_STA_MFP);
1206 else
1207 clear_sta_flag(sta, WLAN_STA_MFP);
1208 }
1209
1210 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1211 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1212 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1213 else
1214 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1215 }
1216
1217 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1218 sta->sta.uapsd_queues = params->uapsd_queues;
1219 sta->sta.max_sp = params->max_sp;
1220 }
1221
1222 /*
1223 * cfg80211 validates this (1-2007) and allows setting the AID
1224 * only when creating a new station entry
1225 */
1226 if (params->aid)
1227 sta->sta.aid = params->aid;
1228
1229 /*
1230 * Some of the following updates would be racy if called on an
1231 * existing station, via ieee80211_change_station(). However,
1232 * all such changes are rejected by cfg80211 except for updates
1233 * changing the supported rates on an existing but not yet used
1234 * TDLS peer.
1235 */
1236
1237 if (params->listen_interval >= 0)
1238 sta->listen_interval = params->listen_interval;
1239
1240 if (params->supported_rates) {
1241 rates = 0;
1242
1243 for (i = 0; i < params->supported_rates_len; i++) {
1244 int rate = (params->supported_rates[i] & 0x7f) * 5;
1245 for (j = 0; j < sband->n_bitrates; j++) {
1246 if (sband->bitrates[j].bitrate == rate)
1247 rates |= BIT(j);
1248 }
1249 }
1250 sta->sta.supp_rates[band] = rates;
1251 }
1252
1253 if (params->ht_capa)
1254 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1255 params->ht_capa, sta);
1256
1257 if (params->vht_capa)
1258 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1259 params->vht_capa, sta);
1260
1261 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1262 #ifdef CONFIG_MAC80211_MESH
1263 u32 changed = 0;
1264 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) {
1265 switch (params->plink_state) {
1266 case NL80211_PLINK_ESTAB:
1267 if (sta->plink_state != NL80211_PLINK_ESTAB)
1268 changed = mesh_plink_inc_estab_count(
1269 sdata);
1270 sta->plink_state = params->plink_state;
1271
1272 ieee80211_mps_sta_status_update(sta);
1273 changed |= ieee80211_mps_set_sta_local_pm(sta,
1274 sdata->u.mesh.mshcfg.power_mode);
1275 break;
1276 case NL80211_PLINK_LISTEN:
1277 case NL80211_PLINK_BLOCKED:
1278 case NL80211_PLINK_OPN_SNT:
1279 case NL80211_PLINK_OPN_RCVD:
1280 case NL80211_PLINK_CNF_RCVD:
1281 case NL80211_PLINK_HOLDING:
1282 if (sta->plink_state == NL80211_PLINK_ESTAB)
1283 changed = mesh_plink_dec_estab_count(
1284 sdata);
1285 sta->plink_state = params->plink_state;
1286
1287 ieee80211_mps_sta_status_update(sta);
1288 changed |=
1289 ieee80211_mps_local_status_update(sdata);
1290 break;
1291 default:
1292 /* nothing */
1293 break;
1294 }
1295 } else {
1296 switch (params->plink_action) {
1297 case PLINK_ACTION_OPEN:
1298 changed |= mesh_plink_open(sta);
1299 break;
1300 case PLINK_ACTION_BLOCK:
1301 changed |= mesh_plink_block(sta);
1302 break;
1303 }
1304 }
1305
1306 if (params->local_pm)
1307 changed |=
1308 ieee80211_mps_set_sta_local_pm(sta,
1309 params->local_pm);
1310 ieee80211_bss_info_change_notify(sdata, changed);
1311 #endif
1312 }
1313
1314 return 0;
1315 }
1316
1317 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1318 u8 *mac, struct station_parameters *params)
1319 {
1320 struct ieee80211_local *local = wiphy_priv(wiphy);
1321 struct sta_info *sta;
1322 struct ieee80211_sub_if_data *sdata;
1323 int err;
1324 int layer2_update;
1325
1326 if (params->vlan) {
1327 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1328
1329 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1330 sdata->vif.type != NL80211_IFTYPE_AP)
1331 return -EINVAL;
1332 } else
1333 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1334
1335 if (ether_addr_equal(mac, sdata->vif.addr))
1336 return -EINVAL;
1337
1338 if (is_multicast_ether_addr(mac))
1339 return -EINVAL;
1340
1341 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1342 if (!sta)
1343 return -ENOMEM;
1344
1345 /*
1346 * defaults -- if userspace wants something else we'll
1347 * change it accordingly in sta_apply_parameters()
1348 */
1349 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1350 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1351
1352 err = sta_apply_parameters(local, sta, params);
1353 if (err) {
1354 sta_info_free(local, sta);
1355 return err;
1356 }
1357
1358 /*
1359 * for TDLS, rate control should be initialized only when supported
1360 * rates are known.
1361 */
1362 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1363 rate_control_rate_init(sta);
1364
1365 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1366 sdata->vif.type == NL80211_IFTYPE_AP;
1367
1368 err = sta_info_insert_rcu(sta);
1369 if (err) {
1370 rcu_read_unlock();
1371 return err;
1372 }
1373
1374 if (layer2_update)
1375 ieee80211_send_layer2_update(sta);
1376
1377 rcu_read_unlock();
1378
1379 return 0;
1380 }
1381
1382 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1383 u8 *mac)
1384 {
1385 struct ieee80211_sub_if_data *sdata;
1386
1387 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1388
1389 if (mac)
1390 return sta_info_destroy_addr_bss(sdata, mac);
1391
1392 sta_info_flush(sdata);
1393 return 0;
1394 }
1395
1396 static int ieee80211_change_station(struct wiphy *wiphy,
1397 struct net_device *dev,
1398 u8 *mac,
1399 struct station_parameters *params)
1400 {
1401 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1402 struct ieee80211_local *local = wiphy_priv(wiphy);
1403 struct sta_info *sta;
1404 struct ieee80211_sub_if_data *vlansdata;
1405 int err;
1406
1407 mutex_lock(&local->sta_mtx);
1408
1409 sta = sta_info_get_bss(sdata, mac);
1410 if (!sta) {
1411 mutex_unlock(&local->sta_mtx);
1412 return -ENOENT;
1413 }
1414
1415 /* in station mode, some updates are only valid with TDLS */
1416 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1417 (params->supported_rates || params->ht_capa || params->vht_capa ||
1418 params->sta_modify_mask ||
1419 (params->sta_flags_mask & BIT(NL80211_STA_FLAG_WME))) &&
1420 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1421 mutex_unlock(&local->sta_mtx);
1422 return -EINVAL;
1423 }
1424
1425 if (params->vlan && params->vlan != sta->sdata->dev) {
1426 bool prev_4addr = false;
1427 bool new_4addr = false;
1428
1429 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1430
1431 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1432 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1433 mutex_unlock(&local->sta_mtx);
1434 return -EINVAL;
1435 }
1436
1437 if (params->vlan->ieee80211_ptr->use_4addr) {
1438 if (vlansdata->u.vlan.sta) {
1439 mutex_unlock(&local->sta_mtx);
1440 return -EBUSY;
1441 }
1442
1443 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1444 new_4addr = true;
1445 }
1446
1447 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1448 sta->sdata->u.vlan.sta) {
1449 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1450 prev_4addr = true;
1451 }
1452
1453 sta->sdata = vlansdata;
1454
1455 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1456 prev_4addr != new_4addr) {
1457 if (new_4addr)
1458 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1459 else
1460 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1461 }
1462
1463 ieee80211_send_layer2_update(sta);
1464 }
1465
1466 err = sta_apply_parameters(local, sta, params);
1467 if (err) {
1468 mutex_unlock(&local->sta_mtx);
1469 return err;
1470 }
1471
1472 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1473 rate_control_rate_init(sta);
1474
1475 mutex_unlock(&local->sta_mtx);
1476
1477 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1478 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1479 ieee80211_recalc_ps(local, -1);
1480 ieee80211_recalc_ps_vif(sdata);
1481 }
1482 return 0;
1483 }
1484
1485 #ifdef CONFIG_MAC80211_MESH
1486 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1487 u8 *dst, u8 *next_hop)
1488 {
1489 struct ieee80211_sub_if_data *sdata;
1490 struct mesh_path *mpath;
1491 struct sta_info *sta;
1492 int err;
1493
1494 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1495
1496 rcu_read_lock();
1497 sta = sta_info_get(sdata, next_hop);
1498 if (!sta) {
1499 rcu_read_unlock();
1500 return -ENOENT;
1501 }
1502
1503 err = mesh_path_add(sdata, dst);
1504 if (err) {
1505 rcu_read_unlock();
1506 return err;
1507 }
1508
1509 mpath = mesh_path_lookup(sdata, dst);
1510 if (!mpath) {
1511 rcu_read_unlock();
1512 return -ENXIO;
1513 }
1514 mesh_path_fix_nexthop(mpath, sta);
1515
1516 rcu_read_unlock();
1517 return 0;
1518 }
1519
1520 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1521 u8 *dst)
1522 {
1523 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1524
1525 if (dst)
1526 return mesh_path_del(sdata, dst);
1527
1528 mesh_path_flush_by_iface(sdata);
1529 return 0;
1530 }
1531
1532 static int ieee80211_change_mpath(struct wiphy *wiphy,
1533 struct net_device *dev,
1534 u8 *dst, u8 *next_hop)
1535 {
1536 struct ieee80211_sub_if_data *sdata;
1537 struct mesh_path *mpath;
1538 struct sta_info *sta;
1539
1540 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1541
1542 rcu_read_lock();
1543
1544 sta = sta_info_get(sdata, next_hop);
1545 if (!sta) {
1546 rcu_read_unlock();
1547 return -ENOENT;
1548 }
1549
1550 mpath = mesh_path_lookup(sdata, dst);
1551 if (!mpath) {
1552 rcu_read_unlock();
1553 return -ENOENT;
1554 }
1555
1556 mesh_path_fix_nexthop(mpath, sta);
1557
1558 rcu_read_unlock();
1559 return 0;
1560 }
1561
1562 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1563 struct mpath_info *pinfo)
1564 {
1565 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1566
1567 if (next_hop_sta)
1568 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1569 else
1570 memset(next_hop, 0, ETH_ALEN);
1571
1572 memset(pinfo, 0, sizeof(*pinfo));
1573
1574 pinfo->generation = mesh_paths_generation;
1575
1576 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1577 MPATH_INFO_SN |
1578 MPATH_INFO_METRIC |
1579 MPATH_INFO_EXPTIME |
1580 MPATH_INFO_DISCOVERY_TIMEOUT |
1581 MPATH_INFO_DISCOVERY_RETRIES |
1582 MPATH_INFO_FLAGS;
1583
1584 pinfo->frame_qlen = mpath->frame_queue.qlen;
1585 pinfo->sn = mpath->sn;
1586 pinfo->metric = mpath->metric;
1587 if (time_before(jiffies, mpath->exp_time))
1588 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1589 pinfo->discovery_timeout =
1590 jiffies_to_msecs(mpath->discovery_timeout);
1591 pinfo->discovery_retries = mpath->discovery_retries;
1592 if (mpath->flags & MESH_PATH_ACTIVE)
1593 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1594 if (mpath->flags & MESH_PATH_RESOLVING)
1595 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1596 if (mpath->flags & MESH_PATH_SN_VALID)
1597 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1598 if (mpath->flags & MESH_PATH_FIXED)
1599 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1600 if (mpath->flags & MESH_PATH_RESOLVED)
1601 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1602 }
1603
1604 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1605 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1606
1607 {
1608 struct ieee80211_sub_if_data *sdata;
1609 struct mesh_path *mpath;
1610
1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1612
1613 rcu_read_lock();
1614 mpath = mesh_path_lookup(sdata, dst);
1615 if (!mpath) {
1616 rcu_read_unlock();
1617 return -ENOENT;
1618 }
1619 memcpy(dst, mpath->dst, ETH_ALEN);
1620 mpath_set_pinfo(mpath, next_hop, pinfo);
1621 rcu_read_unlock();
1622 return 0;
1623 }
1624
1625 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1626 int idx, u8 *dst, u8 *next_hop,
1627 struct mpath_info *pinfo)
1628 {
1629 struct ieee80211_sub_if_data *sdata;
1630 struct mesh_path *mpath;
1631
1632 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634 rcu_read_lock();
1635 mpath = mesh_path_lookup_by_idx(sdata, idx);
1636 if (!mpath) {
1637 rcu_read_unlock();
1638 return -ENOENT;
1639 }
1640 memcpy(dst, mpath->dst, ETH_ALEN);
1641 mpath_set_pinfo(mpath, next_hop, pinfo);
1642 rcu_read_unlock();
1643 return 0;
1644 }
1645
1646 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1647 struct net_device *dev,
1648 struct mesh_config *conf)
1649 {
1650 struct ieee80211_sub_if_data *sdata;
1651 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1652
1653 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1654 return 0;
1655 }
1656
1657 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1658 {
1659 return (mask >> (parm-1)) & 0x1;
1660 }
1661
1662 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1663 const struct mesh_setup *setup)
1664 {
1665 u8 *new_ie;
1666 const u8 *old_ie;
1667 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1668 struct ieee80211_sub_if_data, u.mesh);
1669
1670 /* allocate information elements */
1671 new_ie = NULL;
1672 old_ie = ifmsh->ie;
1673
1674 if (setup->ie_len) {
1675 new_ie = kmemdup(setup->ie, setup->ie_len,
1676 GFP_KERNEL);
1677 if (!new_ie)
1678 return -ENOMEM;
1679 }
1680 ifmsh->ie_len = setup->ie_len;
1681 ifmsh->ie = new_ie;
1682 kfree(old_ie);
1683
1684 /* now copy the rest of the setup parameters */
1685 ifmsh->mesh_id_len = setup->mesh_id_len;
1686 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1687 ifmsh->mesh_sp_id = setup->sync_method;
1688 ifmsh->mesh_pp_id = setup->path_sel_proto;
1689 ifmsh->mesh_pm_id = setup->path_metric;
1690 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1691 if (setup->is_authenticated)
1692 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1693 if (setup->is_secure)
1694 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1695
1696 /* mcast rate setting in Mesh Node */
1697 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1698 sizeof(setup->mcast_rate));
1699
1700 sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1701 sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1702
1703 return 0;
1704 }
1705
1706 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1707 struct net_device *dev, u32 mask,
1708 const struct mesh_config *nconf)
1709 {
1710 struct mesh_config *conf;
1711 struct ieee80211_sub_if_data *sdata;
1712 struct ieee80211_if_mesh *ifmsh;
1713
1714 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1715 ifmsh = &sdata->u.mesh;
1716
1717 /* Set the config options which we are interested in setting */
1718 conf = &(sdata->u.mesh.mshcfg);
1719 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1720 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1721 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1722 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1723 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1724 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1725 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1726 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1727 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1728 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1729 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1730 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1731 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1732 conf->element_ttl = nconf->element_ttl;
1733 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1734 conf->auto_open_plinks = nconf->auto_open_plinks;
1735 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1736 conf->dot11MeshNbrOffsetMaxNeighbor =
1737 nconf->dot11MeshNbrOffsetMaxNeighbor;
1738 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1739 conf->dot11MeshHWMPmaxPREQretries =
1740 nconf->dot11MeshHWMPmaxPREQretries;
1741 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1742 conf->path_refresh_time = nconf->path_refresh_time;
1743 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1744 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1745 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1746 conf->dot11MeshHWMPactivePathTimeout =
1747 nconf->dot11MeshHWMPactivePathTimeout;
1748 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1749 conf->dot11MeshHWMPpreqMinInterval =
1750 nconf->dot11MeshHWMPpreqMinInterval;
1751 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1752 conf->dot11MeshHWMPperrMinInterval =
1753 nconf->dot11MeshHWMPperrMinInterval;
1754 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1755 mask))
1756 conf->dot11MeshHWMPnetDiameterTraversalTime =
1757 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1758 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1759 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1760 ieee80211_mesh_root_setup(ifmsh);
1761 }
1762 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1763 /* our current gate announcement implementation rides on root
1764 * announcements, so require this ifmsh to also be a root node
1765 * */
1766 if (nconf->dot11MeshGateAnnouncementProtocol &&
1767 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1768 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1769 ieee80211_mesh_root_setup(ifmsh);
1770 }
1771 conf->dot11MeshGateAnnouncementProtocol =
1772 nconf->dot11MeshGateAnnouncementProtocol;
1773 }
1774 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1775 conf->dot11MeshHWMPRannInterval =
1776 nconf->dot11MeshHWMPRannInterval;
1777 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1778 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1779 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1780 /* our RSSI threshold implementation is supported only for
1781 * devices that report signal in dBm.
1782 */
1783 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1784 return -ENOTSUPP;
1785 conf->rssi_threshold = nconf->rssi_threshold;
1786 }
1787 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1788 conf->ht_opmode = nconf->ht_opmode;
1789 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1790 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1791 }
1792 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1793 conf->dot11MeshHWMPactivePathToRootTimeout =
1794 nconf->dot11MeshHWMPactivePathToRootTimeout;
1795 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1796 conf->dot11MeshHWMProotInterval =
1797 nconf->dot11MeshHWMProotInterval;
1798 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1799 conf->dot11MeshHWMPconfirmationInterval =
1800 nconf->dot11MeshHWMPconfirmationInterval;
1801 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1802 conf->power_mode = nconf->power_mode;
1803 ieee80211_mps_local_status_update(sdata);
1804 }
1805 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1806 conf->dot11MeshAwakeWindowDuration =
1807 nconf->dot11MeshAwakeWindowDuration;
1808 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1809 return 0;
1810 }
1811
1812 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1813 const struct mesh_config *conf,
1814 const struct mesh_setup *setup)
1815 {
1816 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1817 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1818 int err;
1819
1820 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1821 err = copy_mesh_setup(ifmsh, setup);
1822 if (err)
1823 return err;
1824
1825 /* can mesh use other SMPS modes? */
1826 sdata->smps_mode = IEEE80211_SMPS_OFF;
1827 sdata->needed_rx_chains = sdata->local->rx_chains;
1828
1829 err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1830 IEEE80211_CHANCTX_SHARED);
1831 if (err)
1832 return err;
1833
1834 return ieee80211_start_mesh(sdata);
1835 }
1836
1837 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1838 {
1839 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841 ieee80211_stop_mesh(sdata);
1842 ieee80211_vif_release_channel(sdata);
1843
1844 return 0;
1845 }
1846 #endif
1847
1848 static int ieee80211_change_bss(struct wiphy *wiphy,
1849 struct net_device *dev,
1850 struct bss_parameters *params)
1851 {
1852 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853 enum ieee80211_band band;
1854 u32 changed = 0;
1855
1856 if (!rtnl_dereference(sdata->u.ap.beacon))
1857 return -ENOENT;
1858
1859 band = ieee80211_get_sdata_band(sdata);
1860
1861 if (params->use_cts_prot >= 0) {
1862 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1863 changed |= BSS_CHANGED_ERP_CTS_PROT;
1864 }
1865 if (params->use_short_preamble >= 0) {
1866 sdata->vif.bss_conf.use_short_preamble =
1867 params->use_short_preamble;
1868 changed |= BSS_CHANGED_ERP_PREAMBLE;
1869 }
1870
1871 if (!sdata->vif.bss_conf.use_short_slot &&
1872 band == IEEE80211_BAND_5GHZ) {
1873 sdata->vif.bss_conf.use_short_slot = true;
1874 changed |= BSS_CHANGED_ERP_SLOT;
1875 }
1876
1877 if (params->use_short_slot_time >= 0) {
1878 sdata->vif.bss_conf.use_short_slot =
1879 params->use_short_slot_time;
1880 changed |= BSS_CHANGED_ERP_SLOT;
1881 }
1882
1883 if (params->basic_rates) {
1884 int i, j;
1885 u32 rates = 0;
1886 struct ieee80211_supported_band *sband = wiphy->bands[band];
1887
1888 for (i = 0; i < params->basic_rates_len; i++) {
1889 int rate = (params->basic_rates[i] & 0x7f) * 5;
1890 for (j = 0; j < sband->n_bitrates; j++) {
1891 if (sband->bitrates[j].bitrate == rate)
1892 rates |= BIT(j);
1893 }
1894 }
1895 sdata->vif.bss_conf.basic_rates = rates;
1896 changed |= BSS_CHANGED_BASIC_RATES;
1897 }
1898
1899 if (params->ap_isolate >= 0) {
1900 if (params->ap_isolate)
1901 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1902 else
1903 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1904 }
1905
1906 if (params->ht_opmode >= 0) {
1907 sdata->vif.bss_conf.ht_operation_mode =
1908 (u16) params->ht_opmode;
1909 changed |= BSS_CHANGED_HT;
1910 }
1911
1912 if (params->p2p_ctwindow >= 0) {
1913 sdata->vif.bss_conf.p2p_ctwindow = params->p2p_ctwindow;
1914 changed |= BSS_CHANGED_P2P_PS;
1915 }
1916
1917 if (params->p2p_opp_ps >= 0) {
1918 sdata->vif.bss_conf.p2p_oppps = params->p2p_opp_ps;
1919 changed |= BSS_CHANGED_P2P_PS;
1920 }
1921
1922 ieee80211_bss_info_change_notify(sdata, changed);
1923
1924 return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928 struct net_device *dev,
1929 struct ieee80211_txq_params *params)
1930 {
1931 struct ieee80211_local *local = wiphy_priv(wiphy);
1932 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933 struct ieee80211_tx_queue_params p;
1934
1935 if (!local->ops->conf_tx)
1936 return -EOPNOTSUPP;
1937
1938 if (local->hw.queues < IEEE80211_NUM_ACS)
1939 return -EOPNOTSUPP;
1940
1941 memset(&p, 0, sizeof(p));
1942 p.aifs = params->aifs;
1943 p.cw_max = params->cwmax;
1944 p.cw_min = params->cwmin;
1945 p.txop = params->txop;
1946
1947 /*
1948 * Setting tx queue params disables u-apsd because it's only
1949 * called in master mode.
1950 */
1951 p.uapsd = false;
1952
1953 sdata->tx_conf[params->ac] = p;
1954 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955 wiphy_debug(local->hw.wiphy,
1956 "failed to set TX queue parameters for AC %d\n",
1957 params->ac);
1958 return -EINVAL;
1959 }
1960
1961 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963 return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968 struct cfg80211_wowlan *wowlan)
1969 {
1970 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975 return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983 struct cfg80211_scan_request *req)
1984 {
1985 struct ieee80211_sub_if_data *sdata;
1986
1987 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990 case NL80211_IFTYPE_STATION:
1991 case NL80211_IFTYPE_ADHOC:
1992 case NL80211_IFTYPE_MESH_POINT:
1993 case NL80211_IFTYPE_P2P_CLIENT:
1994 case NL80211_IFTYPE_P2P_DEVICE:
1995 break;
1996 case NL80211_IFTYPE_P2P_GO:
1997 if (sdata->local->ops->hw_scan)
1998 break;
1999 /*
2000 * FIXME: implement NoA while scanning in software,
2001 * for now fall through to allow scanning only when
2002 * beaconing hasn't been configured yet
2003 */
2004 case NL80211_IFTYPE_AP:
2005 /*
2006 * If the scan has been forced (and the driver supports
2007 * forcing), don't care about being beaconing already.
2008 * This will create problems to the attached stations (e.g. all
2009 * the frames sent while scanning on other channel will be
2010 * lost)
2011 */
2012 if (sdata->u.ap.beacon &&
2013 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014 !(req->flags & NL80211_SCAN_FLAG_AP)))
2015 return -EOPNOTSUPP;
2016 break;
2017 default:
2018 return -EOPNOTSUPP;
2019 }
2020
2021 return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static int
2025 ieee80211_sched_scan_start(struct wiphy *wiphy,
2026 struct net_device *dev,
2027 struct cfg80211_sched_scan_request *req)
2028 {
2029 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2030
2031 if (!sdata->local->ops->sched_scan_start)
2032 return -EOPNOTSUPP;
2033
2034 return ieee80211_request_sched_scan_start(sdata, req);
2035 }
2036
2037 static int
2038 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2039 {
2040 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2041
2042 if (!sdata->local->ops->sched_scan_stop)
2043 return -EOPNOTSUPP;
2044
2045 return ieee80211_request_sched_scan_stop(sdata);
2046 }
2047
2048 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2049 struct cfg80211_auth_request *req)
2050 {
2051 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2052 }
2053
2054 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2055 struct cfg80211_assoc_request *req)
2056 {
2057 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2058 }
2059
2060 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2061 struct cfg80211_deauth_request *req)
2062 {
2063 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2064 }
2065
2066 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2067 struct cfg80211_disassoc_request *req)
2068 {
2069 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2070 }
2071
2072 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2073 struct cfg80211_ibss_params *params)
2074 {
2075 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2076 }
2077
2078 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2079 {
2080 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2081 }
2082
2083 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2084 int rate[IEEE80211_NUM_BANDS])
2085 {
2086 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2087
2088 memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2089 sizeof(int) * IEEE80211_NUM_BANDS);
2090
2091 return 0;
2092 }
2093
2094 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2095 {
2096 struct ieee80211_local *local = wiphy_priv(wiphy);
2097 int err;
2098
2099 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2100 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2101
2102 if (err)
2103 return err;
2104 }
2105
2106 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
2107 err = drv_set_coverage_class(local, wiphy->coverage_class);
2108
2109 if (err)
2110 return err;
2111 }
2112
2113 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2114 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2115
2116 if (err)
2117 return err;
2118 }
2119
2120 if (changed & WIPHY_PARAM_RETRY_SHORT) {
2121 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2122 return -EINVAL;
2123 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2124 }
2125 if (changed & WIPHY_PARAM_RETRY_LONG) {
2126 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2127 return -EINVAL;
2128 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2129 }
2130 if (changed &
2131 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2132 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2133
2134 return 0;
2135 }
2136
2137 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2138 struct wireless_dev *wdev,
2139 enum nl80211_tx_power_setting type, int mbm)
2140 {
2141 struct ieee80211_local *local = wiphy_priv(wiphy);
2142 struct ieee80211_sub_if_data *sdata;
2143
2144 if (wdev) {
2145 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2146
2147 switch (type) {
2148 case NL80211_TX_POWER_AUTOMATIC:
2149 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2150 break;
2151 case NL80211_TX_POWER_LIMITED:
2152 case NL80211_TX_POWER_FIXED:
2153 if (mbm < 0 || (mbm % 100))
2154 return -EOPNOTSUPP;
2155 sdata->user_power_level = MBM_TO_DBM(mbm);
2156 break;
2157 }
2158
2159 ieee80211_recalc_txpower(sdata);
2160
2161 return 0;
2162 }
2163
2164 switch (type) {
2165 case NL80211_TX_POWER_AUTOMATIC:
2166 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2167 break;
2168 case NL80211_TX_POWER_LIMITED:
2169 case NL80211_TX_POWER_FIXED:
2170 if (mbm < 0 || (mbm % 100))
2171 return -EOPNOTSUPP;
2172 local->user_power_level = MBM_TO_DBM(mbm);
2173 break;
2174 }
2175
2176 mutex_lock(&local->iflist_mtx);
2177 list_for_each_entry(sdata, &local->interfaces, list)
2178 sdata->user_power_level = local->user_power_level;
2179 list_for_each_entry(sdata, &local->interfaces, list)
2180 ieee80211_recalc_txpower(sdata);
2181 mutex_unlock(&local->iflist_mtx);
2182
2183 return 0;
2184 }
2185
2186 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2187 struct wireless_dev *wdev,
2188 int *dbm)
2189 {
2190 struct ieee80211_local *local = wiphy_priv(wiphy);
2191 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2192
2193 if (!local->use_chanctx)
2194 *dbm = local->hw.conf.power_level;
2195 else
2196 *dbm = sdata->vif.bss_conf.txpower;
2197
2198 return 0;
2199 }
2200
2201 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2202 const u8 *addr)
2203 {
2204 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2205
2206 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2207
2208 return 0;
2209 }
2210
2211 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2212 {
2213 struct ieee80211_local *local = wiphy_priv(wiphy);
2214
2215 drv_rfkill_poll(local);
2216 }
2217
2218 #ifdef CONFIG_NL80211_TESTMODE
2219 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2220 {
2221 struct ieee80211_local *local = wiphy_priv(wiphy);
2222
2223 if (!local->ops->testmode_cmd)
2224 return -EOPNOTSUPP;
2225
2226 return local->ops->testmode_cmd(&local->hw, data, len);
2227 }
2228
2229 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2230 struct sk_buff *skb,
2231 struct netlink_callback *cb,
2232 void *data, int len)
2233 {
2234 struct ieee80211_local *local = wiphy_priv(wiphy);
2235
2236 if (!local->ops->testmode_dump)
2237 return -EOPNOTSUPP;
2238
2239 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2240 }
2241 #endif
2242
2243 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2244 enum ieee80211_smps_mode smps_mode)
2245 {
2246 const u8 *ap;
2247 enum ieee80211_smps_mode old_req;
2248 int err;
2249
2250 lockdep_assert_held(&sdata->u.mgd.mtx);
2251
2252 old_req = sdata->u.mgd.req_smps;
2253 sdata->u.mgd.req_smps = smps_mode;
2254
2255 if (old_req == smps_mode &&
2256 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2257 return 0;
2258
2259 /*
2260 * If not associated, or current association is not an HT
2261 * association, there's no need to do anything, just store
2262 * the new value until we associate.
2263 */
2264 if (!sdata->u.mgd.associated ||
2265 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2266 return 0;
2267
2268 ap = sdata->u.mgd.associated->bssid;
2269
2270 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2271 if (sdata->u.mgd.powersave)
2272 smps_mode = IEEE80211_SMPS_DYNAMIC;
2273 else
2274 smps_mode = IEEE80211_SMPS_OFF;
2275 }
2276
2277 /* send SM PS frame to AP */
2278 err = ieee80211_send_smps_action(sdata, smps_mode,
2279 ap, ap);
2280 if (err)
2281 sdata->u.mgd.req_smps = old_req;
2282
2283 return err;
2284 }
2285
2286 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2287 bool enabled, int timeout)
2288 {
2289 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2290 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2291
2292 if (sdata->vif.type != NL80211_IFTYPE_STATION &&
2293 sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
2294 return -EOPNOTSUPP;
2295
2296 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2297 return -EOPNOTSUPP;
2298
2299 if (enabled == sdata->u.mgd.powersave &&
2300 timeout == local->dynamic_ps_forced_timeout)
2301 return 0;
2302
2303 sdata->u.mgd.powersave = enabled;
2304 local->dynamic_ps_forced_timeout = timeout;
2305
2306 /* no change, but if automatic follow powersave */
2307 mutex_lock(&sdata->u.mgd.mtx);
2308 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2309 mutex_unlock(&sdata->u.mgd.mtx);
2310
2311 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2312 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2313
2314 ieee80211_recalc_ps(local, -1);
2315 ieee80211_recalc_ps_vif(sdata);
2316
2317 return 0;
2318 }
2319
2320 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2321 struct net_device *dev,
2322 s32 rssi_thold, u32 rssi_hyst)
2323 {
2324 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2325 struct ieee80211_vif *vif = &sdata->vif;
2326 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2327
2328 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2329 rssi_hyst == bss_conf->cqm_rssi_hyst)
2330 return 0;
2331
2332 bss_conf->cqm_rssi_thold = rssi_thold;
2333 bss_conf->cqm_rssi_hyst = rssi_hyst;
2334
2335 /* tell the driver upon association, unless already associated */
2336 if (sdata->u.mgd.associated &&
2337 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2338 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2339
2340 return 0;
2341 }
2342
2343 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2344 struct net_device *dev,
2345 const u8 *addr,
2346 const struct cfg80211_bitrate_mask *mask)
2347 {
2348 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2349 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2350 int i, ret;
2351
2352 if (!ieee80211_sdata_running(sdata))
2353 return -ENETDOWN;
2354
2355 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2356 ret = drv_set_bitrate_mask(local, sdata, mask);
2357 if (ret)
2358 return ret;
2359 }
2360
2361 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2362 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2363 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2364 sizeof(mask->control[i].mcs));
2365 }
2366
2367 return 0;
2368 }
2369
2370 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2371 struct ieee80211_sub_if_data *sdata,
2372 struct ieee80211_channel *channel,
2373 unsigned int duration, u64 *cookie,
2374 struct sk_buff *txskb)
2375 {
2376 struct ieee80211_roc_work *roc, *tmp;
2377 bool queued = false;
2378 int ret;
2379
2380 lockdep_assert_held(&local->mtx);
2381
2382 if (local->use_chanctx && !local->ops->remain_on_channel)
2383 return -EOPNOTSUPP;
2384
2385 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2386 if (!roc)
2387 return -ENOMEM;
2388
2389 roc->chan = channel;
2390 roc->duration = duration;
2391 roc->req_duration = duration;
2392 roc->frame = txskb;
2393 roc->mgmt_tx_cookie = (unsigned long)txskb;
2394 roc->sdata = sdata;
2395 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2396 INIT_LIST_HEAD(&roc->dependents);
2397
2398 /* if there's one pending or we're scanning, queue this one */
2399 if (!list_empty(&local->roc_list) ||
2400 local->scanning || local->radar_detect_enabled)
2401 goto out_check_combine;
2402
2403 /* if not HW assist, just queue & schedule work */
2404 if (!local->ops->remain_on_channel) {
2405 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2406 goto out_queue;
2407 }
2408
2409 /* otherwise actually kick it off here (for error handling) */
2410
2411 /*
2412 * If the duration is zero, then the driver
2413 * wouldn't actually do anything. Set it to
2414 * 10 for now.
2415 *
2416 * TODO: cancel the off-channel operation
2417 * when we get the SKB's TX status and
2418 * the wait time was zero before.
2419 */
2420 if (!duration)
2421 duration = 10;
2422
2423 ret = drv_remain_on_channel(local, sdata, channel, duration);
2424 if (ret) {
2425 kfree(roc);
2426 return ret;
2427 }
2428
2429 roc->started = true;
2430 goto out_queue;
2431
2432 out_check_combine:
2433 list_for_each_entry(tmp, &local->roc_list, list) {
2434 if (tmp->chan != channel || tmp->sdata != sdata)
2435 continue;
2436
2437 /*
2438 * Extend this ROC if possible:
2439 *
2440 * If it hasn't started yet, just increase the duration
2441 * and add the new one to the list of dependents.
2442 */
2443 if (!tmp->started) {
2444 list_add_tail(&roc->list, &tmp->dependents);
2445 tmp->duration = max(tmp->duration, roc->duration);
2446 queued = true;
2447 break;
2448 }
2449
2450 /* If it has already started, it's more difficult ... */
2451 if (local->ops->remain_on_channel) {
2452 unsigned long j = jiffies;
2453
2454 /*
2455 * In the offloaded ROC case, if it hasn't begun, add
2456 * this new one to the dependent list to be handled
2457 * when the the master one begins. If it has begun,
2458 * check that there's still a minimum time left and
2459 * if so, start this one, transmitting the frame, but
2460 * add it to the list directly after this one with a
2461 * a reduced time so we'll ask the driver to execute
2462 * it right after finishing the previous one, in the
2463 * hope that it'll also be executed right afterwards,
2464 * effectively extending the old one.
2465 * If there's no minimum time left, just add it to the
2466 * normal list.
2467 */
2468 if (!tmp->hw_begun) {
2469 list_add_tail(&roc->list, &tmp->dependents);
2470 queued = true;
2471 break;
2472 }
2473
2474 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2475 tmp->hw_start_time +
2476 msecs_to_jiffies(tmp->duration))) {
2477 int new_dur;
2478
2479 ieee80211_handle_roc_started(roc);
2480
2481 new_dur = roc->duration -
2482 jiffies_to_msecs(tmp->hw_start_time +
2483 msecs_to_jiffies(
2484 tmp->duration) -
2485 j);
2486
2487 if (new_dur > 0) {
2488 /* add right after tmp */
2489 list_add(&roc->list, &tmp->list);
2490 } else {
2491 list_add_tail(&roc->list,
2492 &tmp->dependents);
2493 }
2494 queued = true;
2495 }
2496 } else if (del_timer_sync(&tmp->work.timer)) {
2497 unsigned long new_end;
2498
2499 /*
2500 * In the software ROC case, cancel the timer, if
2501 * that fails then the finish work is already
2502 * queued/pending and thus we queue the new ROC
2503 * normally, if that succeeds then we can extend
2504 * the timer duration and TX the frame (if any.)
2505 */
2506
2507 list_add_tail(&roc->list, &tmp->dependents);
2508 queued = true;
2509
2510 new_end = jiffies + msecs_to_jiffies(roc->duration);
2511
2512 /* ok, it was started & we canceled timer */
2513 if (time_after(new_end, tmp->work.timer.expires))
2514 mod_timer(&tmp->work.timer, new_end);
2515 else
2516 add_timer(&tmp->work.timer);
2517
2518 ieee80211_handle_roc_started(roc);
2519 }
2520 break;
2521 }
2522
2523 out_queue:
2524 if (!queued)
2525 list_add_tail(&roc->list, &local->roc_list);
2526
2527 /*
2528 * cookie is either the roc cookie (for normal roc)
2529 * or the SKB (for mgmt TX)
2530 */
2531 if (!txskb) {
2532 /* local->mtx protects this */
2533 local->roc_cookie_counter++;
2534 roc->cookie = local->roc_cookie_counter;
2535 /* wow, you wrapped 64 bits ... more likely a bug */
2536 if (WARN_ON(roc->cookie == 0)) {
2537 roc->cookie = 1;
2538 local->roc_cookie_counter++;
2539 }
2540 *cookie = roc->cookie;
2541 } else {
2542 *cookie = (unsigned long)txskb;
2543 }
2544
2545 return 0;
2546 }
2547
2548 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2549 struct wireless_dev *wdev,
2550 struct ieee80211_channel *chan,
2551 unsigned int duration,
2552 u64 *cookie)
2553 {
2554 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2555 struct ieee80211_local *local = sdata->local;
2556 int ret;
2557
2558 mutex_lock(&local->mtx);
2559 ret = ieee80211_start_roc_work(local, sdata, chan,
2560 duration, cookie, NULL);
2561 mutex_unlock(&local->mtx);
2562
2563 return ret;
2564 }
2565
2566 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2567 u64 cookie, bool mgmt_tx)
2568 {
2569 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2570 int ret;
2571
2572 mutex_lock(&local->mtx);
2573 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2574 struct ieee80211_roc_work *dep, *tmp2;
2575
2576 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2577 if (!mgmt_tx && dep->cookie != cookie)
2578 continue;
2579 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2580 continue;
2581 /* found dependent item -- just remove it */
2582 list_del(&dep->list);
2583 mutex_unlock(&local->mtx);
2584
2585 ieee80211_roc_notify_destroy(dep);
2586 return 0;
2587 }
2588
2589 if (!mgmt_tx && roc->cookie != cookie)
2590 continue;
2591 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2592 continue;
2593
2594 found = roc;
2595 break;
2596 }
2597
2598 if (!found) {
2599 mutex_unlock(&local->mtx);
2600 return -ENOENT;
2601 }
2602
2603 /*
2604 * We found the item to cancel, so do that. Note that it
2605 * may have dependents, which we also cancel (and send
2606 * the expired signal for.) Not doing so would be quite
2607 * tricky here, but we may need to fix it later.
2608 */
2609
2610 if (local->ops->remain_on_channel) {
2611 if (found->started) {
2612 ret = drv_cancel_remain_on_channel(local);
2613 if (WARN_ON_ONCE(ret)) {
2614 mutex_unlock(&local->mtx);
2615 return ret;
2616 }
2617 }
2618
2619 list_del(&found->list);
2620
2621 if (found->started)
2622 ieee80211_start_next_roc(local);
2623 mutex_unlock(&local->mtx);
2624
2625 ieee80211_roc_notify_destroy(found);
2626 } else {
2627 /* work may be pending so use it all the time */
2628 found->abort = true;
2629 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2630
2631 mutex_unlock(&local->mtx);
2632
2633 /* work will clean up etc */
2634 flush_delayed_work(&found->work);
2635 }
2636
2637 return 0;
2638 }
2639
2640 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2641 struct wireless_dev *wdev,
2642 u64 cookie)
2643 {
2644 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2645 struct ieee80211_local *local = sdata->local;
2646
2647 return ieee80211_cancel_roc(local, cookie, false);
2648 }
2649
2650 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2651 struct net_device *dev,
2652 struct cfg80211_chan_def *chandef)
2653 {
2654 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2655 struct ieee80211_local *local = sdata->local;
2656 unsigned long timeout;
2657 int err;
2658
2659 if (!list_empty(&local->roc_list) || local->scanning)
2660 return -EBUSY;
2661
2662 /* whatever, but channel contexts should not complain about that one */
2663 sdata->smps_mode = IEEE80211_SMPS_OFF;
2664 sdata->needed_rx_chains = local->rx_chains;
2665 sdata->radar_required = true;
2666
2667 mutex_lock(&local->iflist_mtx);
2668 err = ieee80211_vif_use_channel(sdata, chandef,
2669 IEEE80211_CHANCTX_SHARED);
2670 mutex_unlock(&local->iflist_mtx);
2671 if (err)
2672 return err;
2673
2674 timeout = msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
2675 ieee80211_queue_delayed_work(&sdata->local->hw,
2676 &sdata->dfs_cac_timer_work, timeout);
2677
2678 return 0;
2679 }
2680
2681 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2682 struct ieee80211_channel *chan, bool offchan,
2683 unsigned int wait, const u8 *buf, size_t len,
2684 bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2685 {
2686 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2687 struct ieee80211_local *local = sdata->local;
2688 struct sk_buff *skb;
2689 struct sta_info *sta;
2690 const struct ieee80211_mgmt *mgmt = (void *)buf;
2691 bool need_offchan = false;
2692 u32 flags;
2693 int ret;
2694
2695 if (dont_wait_for_ack)
2696 flags = IEEE80211_TX_CTL_NO_ACK;
2697 else
2698 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2699 IEEE80211_TX_CTL_REQ_TX_STATUS;
2700
2701 if (no_cck)
2702 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2703
2704 switch (sdata->vif.type) {
2705 case NL80211_IFTYPE_ADHOC:
2706 if (!sdata->vif.bss_conf.ibss_joined)
2707 need_offchan = true;
2708 /* fall through */
2709 #ifdef CONFIG_MAC80211_MESH
2710 case NL80211_IFTYPE_MESH_POINT:
2711 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2712 !sdata->u.mesh.mesh_id_len)
2713 need_offchan = true;
2714 /* fall through */
2715 #endif
2716 case NL80211_IFTYPE_AP:
2717 case NL80211_IFTYPE_AP_VLAN:
2718 case NL80211_IFTYPE_P2P_GO:
2719 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2720 !ieee80211_vif_is_mesh(&sdata->vif) &&
2721 !rcu_access_pointer(sdata->bss->beacon))
2722 need_offchan = true;
2723 if (!ieee80211_is_action(mgmt->frame_control) ||
2724 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2725 break;
2726 rcu_read_lock();
2727 sta = sta_info_get(sdata, mgmt->da);
2728 rcu_read_unlock();
2729 if (!sta)
2730 return -ENOLINK;
2731 break;
2732 case NL80211_IFTYPE_STATION:
2733 case NL80211_IFTYPE_P2P_CLIENT:
2734 if (!sdata->u.mgd.associated)
2735 need_offchan = true;
2736 break;
2737 case NL80211_IFTYPE_P2P_DEVICE:
2738 need_offchan = true;
2739 break;
2740 default:
2741 return -EOPNOTSUPP;
2742 }
2743
2744 mutex_lock(&local->mtx);
2745
2746 /* Check if the operating channel is the requested channel */
2747 if (!need_offchan) {
2748 struct ieee80211_chanctx_conf *chanctx_conf;
2749
2750 rcu_read_lock();
2751 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2752
2753 if (chanctx_conf)
2754 need_offchan = chan != chanctx_conf->def.chan;
2755 else
2756 need_offchan = true;
2757 rcu_read_unlock();
2758 }
2759
2760 if (need_offchan && !offchan) {
2761 ret = -EBUSY;
2762 goto out_unlock;
2763 }
2764
2765 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2766 if (!skb) {
2767 ret = -ENOMEM;
2768 goto out_unlock;
2769 }
2770 skb_reserve(skb, local->hw.extra_tx_headroom);
2771
2772 memcpy(skb_put(skb, len), buf, len);
2773
2774 IEEE80211_SKB_CB(skb)->flags = flags;
2775
2776 skb->dev = sdata->dev;
2777
2778 if (!need_offchan) {
2779 *cookie = (unsigned long) skb;
2780 ieee80211_tx_skb(sdata, skb);
2781 ret = 0;
2782 goto out_unlock;
2783 }
2784
2785 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN |
2786 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
2787 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2788 IEEE80211_SKB_CB(skb)->hw_queue =
2789 local->hw.offchannel_tx_hw_queue;
2790
2791 /* This will handle all kinds of coalescing and immediate TX */
2792 ret = ieee80211_start_roc_work(local, sdata, chan,
2793 wait, cookie, skb);
2794 if (ret)
2795 kfree_skb(skb);
2796 out_unlock:
2797 mutex_unlock(&local->mtx);
2798 return ret;
2799 }
2800
2801 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2802 struct wireless_dev *wdev,
2803 u64 cookie)
2804 {
2805 struct ieee80211_local *local = wiphy_priv(wiphy);
2806
2807 return ieee80211_cancel_roc(local, cookie, true);
2808 }
2809
2810 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2811 struct wireless_dev *wdev,
2812 u16 frame_type, bool reg)
2813 {
2814 struct ieee80211_local *local = wiphy_priv(wiphy);
2815 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2816
2817 switch (frame_type) {
2818 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2819 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2820 struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2821
2822 if (reg)
2823 ifibss->auth_frame_registrations++;
2824 else
2825 ifibss->auth_frame_registrations--;
2826 }
2827 break;
2828 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2829 if (reg)
2830 local->probe_req_reg++;
2831 else
2832 local->probe_req_reg--;
2833
2834 if (!local->open_count)
2835 break;
2836
2837 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2838 break;
2839 default:
2840 break;
2841 }
2842 }
2843
2844 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2845 {
2846 struct ieee80211_local *local = wiphy_priv(wiphy);
2847
2848 if (local->started)
2849 return -EOPNOTSUPP;
2850
2851 return drv_set_antenna(local, tx_ant, rx_ant);
2852 }
2853
2854 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2855 {
2856 struct ieee80211_local *local = wiphy_priv(wiphy);
2857
2858 return drv_get_antenna(local, tx_ant, rx_ant);
2859 }
2860
2861 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2862 {
2863 struct ieee80211_local *local = wiphy_priv(wiphy);
2864
2865 return drv_set_ringparam(local, tx, rx);
2866 }
2867
2868 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2869 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2870 {
2871 struct ieee80211_local *local = wiphy_priv(wiphy);
2872
2873 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2874 }
2875
2876 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2877 struct net_device *dev,
2878 struct cfg80211_gtk_rekey_data *data)
2879 {
2880 struct ieee80211_local *local = wiphy_priv(wiphy);
2881 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2882
2883 if (!local->ops->set_rekey_data)
2884 return -EOPNOTSUPP;
2885
2886 drv_set_rekey_data(local, sdata, data);
2887
2888 return 0;
2889 }
2890
2891 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2892 {
2893 u8 *pos = (void *)skb_put(skb, 7);
2894
2895 *pos++ = WLAN_EID_EXT_CAPABILITY;
2896 *pos++ = 5; /* len */
2897 *pos++ = 0x0;
2898 *pos++ = 0x0;
2899 *pos++ = 0x0;
2900 *pos++ = 0x0;
2901 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2902 }
2903
2904 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2905 {
2906 struct ieee80211_local *local = sdata->local;
2907 u16 capab;
2908
2909 capab = 0;
2910 if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2911 return capab;
2912
2913 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2914 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2915 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2916 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2917
2918 return capab;
2919 }
2920
2921 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2922 u8 *peer, u8 *bssid)
2923 {
2924 struct ieee80211_tdls_lnkie *lnkid;
2925
2926 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2927
2928 lnkid->ie_type = WLAN_EID_LINK_ID;
2929 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2930
2931 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2932 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2933 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2934 }
2935
2936 static int
2937 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2938 u8 *peer, u8 action_code, u8 dialog_token,
2939 u16 status_code, struct sk_buff *skb)
2940 {
2941 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2942 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2943 struct ieee80211_tdls_data *tf;
2944
2945 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2946
2947 memcpy(tf->da, peer, ETH_ALEN);
2948 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2949 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2950 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2951
2952 switch (action_code) {
2953 case WLAN_TDLS_SETUP_REQUEST:
2954 tf->category = WLAN_CATEGORY_TDLS;
2955 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2956
2957 skb_put(skb, sizeof(tf->u.setup_req));
2958 tf->u.setup_req.dialog_token = dialog_token;
2959 tf->u.setup_req.capability =
2960 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2961
2962 ieee80211_add_srates_ie(sdata, skb, false, band);
2963 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2964 ieee80211_tdls_add_ext_capab(skb);
2965 break;
2966 case WLAN_TDLS_SETUP_RESPONSE:
2967 tf->category = WLAN_CATEGORY_TDLS;
2968 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2969
2970 skb_put(skb, sizeof(tf->u.setup_resp));
2971 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2972 tf->u.setup_resp.dialog_token = dialog_token;
2973 tf->u.setup_resp.capability =
2974 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2975
2976 ieee80211_add_srates_ie(sdata, skb, false, band);
2977 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2978 ieee80211_tdls_add_ext_capab(skb);
2979 break;
2980 case WLAN_TDLS_SETUP_CONFIRM:
2981 tf->category = WLAN_CATEGORY_TDLS;
2982 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2983
2984 skb_put(skb, sizeof(tf->u.setup_cfm));
2985 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2986 tf->u.setup_cfm.dialog_token = dialog_token;
2987 break;
2988 case WLAN_TDLS_TEARDOWN:
2989 tf->category = WLAN_CATEGORY_TDLS;
2990 tf->action_code = WLAN_TDLS_TEARDOWN;
2991
2992 skb_put(skb, sizeof(tf->u.teardown));
2993 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2994 break;
2995 case WLAN_TDLS_DISCOVERY_REQUEST:
2996 tf->category = WLAN_CATEGORY_TDLS;
2997 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2998
2999 skb_put(skb, sizeof(tf->u.discover_req));
3000 tf->u.discover_req.dialog_token = dialog_token;
3001 break;
3002 default:
3003 return -EINVAL;
3004 }
3005
3006 return 0;
3007 }
3008
3009 static int
3010 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
3011 u8 *peer, u8 action_code, u8 dialog_token,
3012 u16 status_code, struct sk_buff *skb)
3013 {
3014 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3015 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
3016 struct ieee80211_mgmt *mgmt;
3017
3018 mgmt = (void *)skb_put(skb, 24);
3019 memset(mgmt, 0, 24);
3020 memcpy(mgmt->da, peer, ETH_ALEN);
3021 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
3022 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
3023
3024 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
3025 IEEE80211_STYPE_ACTION);
3026
3027 switch (action_code) {
3028 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3029 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
3030 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
3031 mgmt->u.action.u.tdls_discover_resp.action_code =
3032 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
3033 mgmt->u.action.u.tdls_discover_resp.dialog_token =
3034 dialog_token;
3035 mgmt->u.action.u.tdls_discover_resp.capability =
3036 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
3037
3038 ieee80211_add_srates_ie(sdata, skb, false, band);
3039 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
3040 ieee80211_tdls_add_ext_capab(skb);
3041 break;
3042 default:
3043 return -EINVAL;
3044 }
3045
3046 return 0;
3047 }
3048
3049 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
3050 u8 *peer, u8 action_code, u8 dialog_token,
3051 u16 status_code, const u8 *extra_ies,
3052 size_t extra_ies_len)
3053 {
3054 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3055 struct ieee80211_local *local = sdata->local;
3056 struct sk_buff *skb = NULL;
3057 bool send_direct;
3058 int ret;
3059
3060 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3061 return -ENOTSUPP;
3062
3063 /* make sure we are in managed mode, and associated */
3064 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
3065 !sdata->u.mgd.associated)
3066 return -EINVAL;
3067
3068 tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
3069 action_code, peer);
3070
3071 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
3072 max(sizeof(struct ieee80211_mgmt),
3073 sizeof(struct ieee80211_tdls_data)) +
3074 50 + /* supported rates */
3075 7 + /* ext capab */
3076 extra_ies_len +
3077 sizeof(struct ieee80211_tdls_lnkie));
3078 if (!skb)
3079 return -ENOMEM;
3080
3081 skb_reserve(skb, local->hw.extra_tx_headroom);
3082
3083 switch (action_code) {
3084 case WLAN_TDLS_SETUP_REQUEST:
3085 case WLAN_TDLS_SETUP_RESPONSE:
3086 case WLAN_TDLS_SETUP_CONFIRM:
3087 case WLAN_TDLS_TEARDOWN:
3088 case WLAN_TDLS_DISCOVERY_REQUEST:
3089 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
3090 action_code, dialog_token,
3091 status_code, skb);
3092 send_direct = false;
3093 break;
3094 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3095 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
3096 dialog_token, status_code,
3097 skb);
3098 send_direct = true;
3099 break;
3100 default:
3101 ret = -ENOTSUPP;
3102 break;
3103 }
3104
3105 if (ret < 0)
3106 goto fail;
3107
3108 if (extra_ies_len)
3109 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
3110
3111 /* the TDLS link IE is always added last */
3112 switch (action_code) {
3113 case WLAN_TDLS_SETUP_REQUEST:
3114 case WLAN_TDLS_SETUP_CONFIRM:
3115 case WLAN_TDLS_TEARDOWN:
3116 case WLAN_TDLS_DISCOVERY_REQUEST:
3117 /* we are the initiator */
3118 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
3119 sdata->u.mgd.bssid);
3120 break;
3121 case WLAN_TDLS_SETUP_RESPONSE:
3122 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
3123 /* we are the responder */
3124 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
3125 sdata->u.mgd.bssid);
3126 break;
3127 default:
3128 ret = -ENOTSUPP;
3129 goto fail;
3130 }
3131
3132 if (send_direct) {
3133 ieee80211_tx_skb(sdata, skb);
3134 return 0;
3135 }
3136
3137 /*
3138 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
3139 * we should default to AC_VI.
3140 */
3141 switch (action_code) {
3142 case WLAN_TDLS_SETUP_REQUEST:
3143 case WLAN_TDLS_SETUP_RESPONSE:
3144 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
3145 skb->priority = 2;
3146 break;
3147 default:
3148 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
3149 skb->priority = 5;
3150 break;
3151 }
3152
3153 /* disable bottom halves when entering the Tx path */
3154 local_bh_disable();
3155 ret = ieee80211_subif_start_xmit(skb, dev);
3156 local_bh_enable();
3157
3158 return ret;
3159
3160 fail:
3161 dev_kfree_skb(skb);
3162 return ret;
3163 }
3164
3165 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
3166 u8 *peer, enum nl80211_tdls_operation oper)
3167 {
3168 struct sta_info *sta;
3169 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3170
3171 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
3172 return -ENOTSUPP;
3173
3174 if (sdata->vif.type != NL80211_IFTYPE_STATION)
3175 return -EINVAL;
3176
3177 tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3178
3179 switch (oper) {
3180 case NL80211_TDLS_ENABLE_LINK:
3181 rcu_read_lock();
3182 sta = sta_info_get(sdata, peer);
3183 if (!sta) {
3184 rcu_read_unlock();
3185 return -ENOLINK;
3186 }
3187
3188 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3189 rcu_read_unlock();
3190 break;
3191 case NL80211_TDLS_DISABLE_LINK:
3192 return sta_info_destroy_addr(sdata, peer);
3193 case NL80211_TDLS_TEARDOWN:
3194 case NL80211_TDLS_SETUP:
3195 case NL80211_TDLS_DISCOVERY_REQ:
3196 /* We don't support in-driver setup/teardown/discovery */
3197 return -ENOTSUPP;
3198 default:
3199 return -ENOTSUPP;
3200 }
3201
3202 return 0;
3203 }
3204
3205 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3206 const u8 *peer, u64 *cookie)
3207 {
3208 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3209 struct ieee80211_local *local = sdata->local;
3210 struct ieee80211_qos_hdr *nullfunc;
3211 struct sk_buff *skb;
3212 int size = sizeof(*nullfunc);
3213 __le16 fc;
3214 bool qos;
3215 struct ieee80211_tx_info *info;
3216 struct sta_info *sta;
3217 struct ieee80211_chanctx_conf *chanctx_conf;
3218 enum ieee80211_band band;
3219
3220 rcu_read_lock();
3221 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3222 if (WARN_ON(!chanctx_conf)) {
3223 rcu_read_unlock();
3224 return -EINVAL;
3225 }
3226 band = chanctx_conf->def.chan->band;
3227 sta = sta_info_get(sdata, peer);
3228 if (sta) {
3229 qos = test_sta_flag(sta, WLAN_STA_WME);
3230 } else {
3231 rcu_read_unlock();
3232 return -ENOLINK;
3233 }
3234
3235 if (qos) {
3236 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3237 IEEE80211_STYPE_QOS_NULLFUNC |
3238 IEEE80211_FCTL_FROMDS);
3239 } else {
3240 size -= 2;
3241 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3242 IEEE80211_STYPE_NULLFUNC |
3243 IEEE80211_FCTL_FROMDS);
3244 }
3245
3246 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3247 if (!skb) {
3248 rcu_read_unlock();
3249 return -ENOMEM;
3250 }
3251
3252 skb->dev = dev;
3253
3254 skb_reserve(skb, local->hw.extra_tx_headroom);
3255
3256 nullfunc = (void *) skb_put(skb, size);
3257 nullfunc->frame_control = fc;
3258 nullfunc->duration_id = 0;
3259 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3260 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3261 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3262 nullfunc->seq_ctrl = 0;
3263
3264 info = IEEE80211_SKB_CB(skb);
3265
3266 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3267 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3268
3269 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3270 skb->priority = 7;
3271 if (qos)
3272 nullfunc->qos_ctrl = cpu_to_le16(7);
3273
3274 local_bh_disable();
3275 ieee80211_xmit(sdata, skb, band);
3276 local_bh_enable();
3277 rcu_read_unlock();
3278
3279 *cookie = (unsigned long) skb;
3280 return 0;
3281 }
3282
3283 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3284 struct wireless_dev *wdev,
3285 struct cfg80211_chan_def *chandef)
3286 {
3287 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3288 struct ieee80211_local *local = wiphy_priv(wiphy);
3289 struct ieee80211_chanctx_conf *chanctx_conf;
3290 int ret = -ENODATA;
3291
3292 rcu_read_lock();
3293 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3294 if (chanctx_conf) {
3295 *chandef = chanctx_conf->def;
3296 ret = 0;
3297 } else if (local->open_count > 0 &&
3298 local->open_count == local->monitors &&
3299 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3300 if (local->use_chanctx)
3301 *chandef = local->monitor_chandef;
3302 else
3303 cfg80211_chandef_create(chandef,
3304 local->_oper_channel,
3305 local->_oper_channel_type);
3306 ret = 0;
3307 }
3308 rcu_read_unlock();
3309
3310 return ret;
3311 }
3312
3313 #ifdef CONFIG_PM
3314 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3315 {
3316 drv_set_wakeup(wiphy_priv(wiphy), enabled);
3317 }
3318 #endif
3319
3320 struct cfg80211_ops mac80211_config_ops = {
3321 .add_virtual_intf = ieee80211_add_iface,
3322 .del_virtual_intf = ieee80211_del_iface,
3323 .change_virtual_intf = ieee80211_change_iface,
3324 .start_p2p_device = ieee80211_start_p2p_device,
3325 .stop_p2p_device = ieee80211_stop_p2p_device,
3326 .add_key = ieee80211_add_key,
3327 .del_key = ieee80211_del_key,
3328 .get_key = ieee80211_get_key,
3329 .set_default_key = ieee80211_config_default_key,
3330 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3331 .start_ap = ieee80211_start_ap,
3332 .change_beacon = ieee80211_change_beacon,
3333 .stop_ap = ieee80211_stop_ap,
3334 .add_station = ieee80211_add_station,
3335 .del_station = ieee80211_del_station,
3336 .change_station = ieee80211_change_station,
3337 .get_station = ieee80211_get_station,
3338 .dump_station = ieee80211_dump_station,
3339 .dump_survey = ieee80211_dump_survey,
3340 #ifdef CONFIG_MAC80211_MESH
3341 .add_mpath = ieee80211_add_mpath,
3342 .del_mpath = ieee80211_del_mpath,
3343 .change_mpath = ieee80211_change_mpath,
3344 .get_mpath = ieee80211_get_mpath,
3345 .dump_mpath = ieee80211_dump_mpath,
3346 .update_mesh_config = ieee80211_update_mesh_config,
3347 .get_mesh_config = ieee80211_get_mesh_config,
3348 .join_mesh = ieee80211_join_mesh,
3349 .leave_mesh = ieee80211_leave_mesh,
3350 #endif
3351 .change_bss = ieee80211_change_bss,
3352 .set_txq_params = ieee80211_set_txq_params,
3353 .set_monitor_channel = ieee80211_set_monitor_channel,
3354 .suspend = ieee80211_suspend,
3355 .resume = ieee80211_resume,
3356 .scan = ieee80211_scan,
3357 .sched_scan_start = ieee80211_sched_scan_start,
3358 .sched_scan_stop = ieee80211_sched_scan_stop,
3359 .auth = ieee80211_auth,
3360 .assoc = ieee80211_assoc,
3361 .deauth = ieee80211_deauth,
3362 .disassoc = ieee80211_disassoc,
3363 .join_ibss = ieee80211_join_ibss,
3364 .leave_ibss = ieee80211_leave_ibss,
3365 .set_mcast_rate = ieee80211_set_mcast_rate,
3366 .set_wiphy_params = ieee80211_set_wiphy_params,
3367 .set_tx_power = ieee80211_set_tx_power,
3368 .get_tx_power = ieee80211_get_tx_power,
3369 .set_wds_peer = ieee80211_set_wds_peer,
3370 .rfkill_poll = ieee80211_rfkill_poll,
3371 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3372 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3373 .set_power_mgmt = ieee80211_set_power_mgmt,
3374 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3375 .remain_on_channel = ieee80211_remain_on_channel,
3376 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3377 .mgmt_tx = ieee80211_mgmt_tx,
3378 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3379 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3380 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3381 .set_antenna = ieee80211_set_antenna,
3382 .get_antenna = ieee80211_get_antenna,
3383 .set_ringparam = ieee80211_set_ringparam,
3384 .get_ringparam = ieee80211_get_ringparam,
3385 .set_rekey_data = ieee80211_set_rekey_data,
3386 .tdls_oper = ieee80211_tdls_oper,
3387 .tdls_mgmt = ieee80211_tdls_mgmt,
3388 .probe_client = ieee80211_probe_client,
3389 .set_noack_map = ieee80211_set_noack_map,
3390 #ifdef CONFIG_PM
3391 .set_wakeup = ieee80211_set_wakeup,
3392 #endif
3393 .get_et_sset_count = ieee80211_get_et_sset_count,
3394 .get_et_stats = ieee80211_get_et_stats,
3395 .get_et_strings = ieee80211_get_et_strings,
3396 .get_channel = ieee80211_cfg_get_channel,
3397 .start_radar_detection = ieee80211_start_radar_detection,
3398 };
Linus' kernel tree