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