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Merge tag 'arm-soc-imx-move' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[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 net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
24 enum nl80211_iftype type,
25 u32 *flags,
26 struct vif_params *params)
27 {
28 struct ieee80211_local *local = wiphy_priv(wiphy);
29 struct net_device *dev;
30 struct ieee80211_sub_if_data *sdata;
31 int err;
32
33 err = ieee80211_if_add(local, name, &dev, type, params);
34 if (err)
35 return ERR_PTR(err);
36
37 if (type == NL80211_IFTYPE_MONITOR && flags) {
38 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
39 sdata->u.mntr_flags = *flags;
40 }
41
42 return dev;
43 }
44
45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
46 {
47 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
48
49 return 0;
50 }
51
52 static int ieee80211_change_iface(struct wiphy *wiphy,
53 struct net_device *dev,
54 enum nl80211_iftype type, u32 *flags,
55 struct vif_params *params)
56 {
57 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
58 int ret;
59
60 ret = ieee80211_if_change_type(sdata, type);
61 if (ret)
62 return ret;
63
64 if (type == NL80211_IFTYPE_AP_VLAN &&
65 params && params->use_4addr == 0)
66 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
67 else if (type == NL80211_IFTYPE_STATION &&
68 params && params->use_4addr >= 0)
69 sdata->u.mgd.use_4addr = params->use_4addr;
70
71 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
72 struct ieee80211_local *local = sdata->local;
73
74 if (ieee80211_sdata_running(sdata)) {
75 /*
76 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
77 * changed while the interface is up.
78 * Else we would need to add a lot of cruft
79 * to update everything:
80 * cooked_mntrs, monitor and all fif_* counters
81 * reconfigure hardware
82 */
83 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
84 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
85 return -EBUSY;
86
87 ieee80211_adjust_monitor_flags(sdata, -1);
88 sdata->u.mntr_flags = *flags;
89 ieee80211_adjust_monitor_flags(sdata, 1);
90
91 ieee80211_configure_filter(local);
92 } else {
93 /*
94 * Because the interface is down, ieee80211_do_stop
95 * and ieee80211_do_open take care of "everything"
96 * mentioned in the comment above.
97 */
98 sdata->u.mntr_flags = *flags;
99 }
100 }
101
102 return 0;
103 }
104
105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
106 struct net_device *dev,
107 u16 noack_map)
108 {
109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
110
111 sdata->noack_map = noack_map;
112 return 0;
113 }
114
115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
116 u8 key_idx, bool pairwise, const u8 *mac_addr,
117 struct key_params *params)
118 {
119 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
120 struct sta_info *sta = NULL;
121 struct ieee80211_key *key;
122 int err;
123
124 if (!ieee80211_sdata_running(sdata))
125 return -ENETDOWN;
126
127 /* reject WEP and TKIP keys if WEP failed to initialize */
128 switch (params->cipher) {
129 case WLAN_CIPHER_SUITE_WEP40:
130 case WLAN_CIPHER_SUITE_TKIP:
131 case WLAN_CIPHER_SUITE_WEP104:
132 if (IS_ERR(sdata->local->wep_tx_tfm))
133 return -EINVAL;
134 break;
135 default:
136 break;
137 }
138
139 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
140 params->key, params->seq_len, params->seq);
141 if (IS_ERR(key))
142 return PTR_ERR(key);
143
144 if (pairwise)
145 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
146
147 mutex_lock(&sdata->local->sta_mtx);
148
149 if (mac_addr) {
150 if (ieee80211_vif_is_mesh(&sdata->vif))
151 sta = sta_info_get(sdata, mac_addr);
152 else
153 sta = sta_info_get_bss(sdata, mac_addr);
154 if (!sta) {
155 ieee80211_key_free(sdata->local, key);
156 err = -ENOENT;
157 goto out_unlock;
158 }
159 }
160
161 err = ieee80211_key_link(key, sdata, sta);
162 if (err)
163 ieee80211_key_free(sdata->local, key);
164
165 out_unlock:
166 mutex_unlock(&sdata->local->sta_mtx);
167
168 return err;
169 }
170
171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
172 u8 key_idx, bool pairwise, const u8 *mac_addr)
173 {
174 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
175 struct ieee80211_local *local = sdata->local;
176 struct sta_info *sta;
177 struct ieee80211_key *key = NULL;
178 int ret;
179
180 mutex_lock(&local->sta_mtx);
181 mutex_lock(&local->key_mtx);
182
183 if (mac_addr) {
184 ret = -ENOENT;
185
186 sta = sta_info_get_bss(sdata, mac_addr);
187 if (!sta)
188 goto out_unlock;
189
190 if (pairwise)
191 key = key_mtx_dereference(local, sta->ptk);
192 else
193 key = key_mtx_dereference(local, sta->gtk[key_idx]);
194 } else
195 key = key_mtx_dereference(local, sdata->keys[key_idx]);
196
197 if (!key) {
198 ret = -ENOENT;
199 goto out_unlock;
200 }
201
202 __ieee80211_key_free(key);
203
204 ret = 0;
205 out_unlock:
206 mutex_unlock(&local->key_mtx);
207 mutex_unlock(&local->sta_mtx);
208
209 return ret;
210 }
211
212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
213 u8 key_idx, bool pairwise, const u8 *mac_addr,
214 void *cookie,
215 void (*callback)(void *cookie,
216 struct key_params *params))
217 {
218 struct ieee80211_sub_if_data *sdata;
219 struct sta_info *sta = NULL;
220 u8 seq[6] = {0};
221 struct key_params params;
222 struct ieee80211_key *key = NULL;
223 u64 pn64;
224 u32 iv32;
225 u16 iv16;
226 int err = -ENOENT;
227
228 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
229
230 rcu_read_lock();
231
232 if (mac_addr) {
233 sta = sta_info_get_bss(sdata, mac_addr);
234 if (!sta)
235 goto out;
236
237 if (pairwise)
238 key = rcu_dereference(sta->ptk);
239 else if (key_idx < NUM_DEFAULT_KEYS)
240 key = rcu_dereference(sta->gtk[key_idx]);
241 } else
242 key = rcu_dereference(sdata->keys[key_idx]);
243
244 if (!key)
245 goto out;
246
247 memset(&params, 0, sizeof(params));
248
249 params.cipher = key->conf.cipher;
250
251 switch (key->conf.cipher) {
252 case WLAN_CIPHER_SUITE_TKIP:
253 iv32 = key->u.tkip.tx.iv32;
254 iv16 = key->u.tkip.tx.iv16;
255
256 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
257 drv_get_tkip_seq(sdata->local,
258 key->conf.hw_key_idx,
259 &iv32, &iv16);
260
261 seq[0] = iv16 & 0xff;
262 seq[1] = (iv16 >> 8) & 0xff;
263 seq[2] = iv32 & 0xff;
264 seq[3] = (iv32 >> 8) & 0xff;
265 seq[4] = (iv32 >> 16) & 0xff;
266 seq[5] = (iv32 >> 24) & 0xff;
267 params.seq = seq;
268 params.seq_len = 6;
269 break;
270 case WLAN_CIPHER_SUITE_CCMP:
271 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
272 seq[0] = pn64;
273 seq[1] = pn64 >> 8;
274 seq[2] = pn64 >> 16;
275 seq[3] = pn64 >> 24;
276 seq[4] = pn64 >> 32;
277 seq[5] = pn64 >> 40;
278 params.seq = seq;
279 params.seq_len = 6;
280 break;
281 case WLAN_CIPHER_SUITE_AES_CMAC:
282 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
283 seq[0] = pn64;
284 seq[1] = pn64 >> 8;
285 seq[2] = pn64 >> 16;
286 seq[3] = pn64 >> 24;
287 seq[4] = pn64 >> 32;
288 seq[5] = pn64 >> 40;
289 params.seq = seq;
290 params.seq_len = 6;
291 break;
292 }
293
294 params.key = key->conf.key;
295 params.key_len = key->conf.keylen;
296
297 callback(cookie, &params);
298 err = 0;
299
300 out:
301 rcu_read_unlock();
302 return err;
303 }
304
305 static int ieee80211_config_default_key(struct wiphy *wiphy,
306 struct net_device *dev,
307 u8 key_idx, bool uni,
308 bool multi)
309 {
310 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
311
312 ieee80211_set_default_key(sdata, key_idx, uni, multi);
313
314 return 0;
315 }
316
317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
318 struct net_device *dev,
319 u8 key_idx)
320 {
321 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
322
323 ieee80211_set_default_mgmt_key(sdata, key_idx);
324
325 return 0;
326 }
327
328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
329 {
330 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
331 struct ieee80211_supported_band *sband;
332 sband = sta->local->hw.wiphy->bands[
333 sta->local->hw.conf.channel->band];
334 rate->legacy = sband->bitrates[idx].bitrate;
335 } else
336 rate->mcs = idx;
337 }
338
339 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
340 {
341 struct ieee80211_sub_if_data *sdata = sta->sdata;
342 struct timespec uptime;
343
344 sinfo->generation = sdata->local->sta_generation;
345
346 sinfo->filled = STATION_INFO_INACTIVE_TIME |
347 STATION_INFO_RX_BYTES |
348 STATION_INFO_TX_BYTES |
349 STATION_INFO_RX_PACKETS |
350 STATION_INFO_TX_PACKETS |
351 STATION_INFO_TX_RETRIES |
352 STATION_INFO_TX_FAILED |
353 STATION_INFO_TX_BITRATE |
354 STATION_INFO_RX_BITRATE |
355 STATION_INFO_RX_DROP_MISC |
356 STATION_INFO_BSS_PARAM |
357 STATION_INFO_CONNECTED_TIME |
358 STATION_INFO_STA_FLAGS |
359 STATION_INFO_BEACON_LOSS_COUNT;
360
361 do_posix_clock_monotonic_gettime(&uptime);
362 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
363
364 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
365 sinfo->rx_bytes = sta->rx_bytes;
366 sinfo->tx_bytes = sta->tx_bytes;
367 sinfo->rx_packets = sta->rx_packets;
368 sinfo->tx_packets = sta->tx_packets;
369 sinfo->tx_retries = sta->tx_retry_count;
370 sinfo->tx_failed = sta->tx_retry_failed;
371 sinfo->rx_dropped_misc = sta->rx_dropped;
372 sinfo->beacon_loss_count = sta->beacon_loss_count;
373
374 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
375 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
376 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
377 sinfo->signal = (s8)sta->last_signal;
378 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
379 }
380
381 sinfo->txrate.flags = 0;
382 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
383 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
384 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
385 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
386 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
387 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
388 rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
389
390 sinfo->rxrate.flags = 0;
391 if (sta->last_rx_rate_flag & RX_FLAG_HT)
392 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
393 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
394 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
395 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
396 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
397 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
398
399 if (ieee80211_vif_is_mesh(&sdata->vif)) {
400 #ifdef CONFIG_MAC80211_MESH
401 sinfo->filled |= STATION_INFO_LLID |
402 STATION_INFO_PLID |
403 STATION_INFO_PLINK_STATE;
404
405 sinfo->llid = le16_to_cpu(sta->llid);
406 sinfo->plid = le16_to_cpu(sta->plid);
407 sinfo->plink_state = sta->plink_state;
408 #endif
409 }
410
411 sinfo->bss_param.flags = 0;
412 if (sdata->vif.bss_conf.use_cts_prot)
413 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
414 if (sdata->vif.bss_conf.use_short_preamble)
415 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
416 if (sdata->vif.bss_conf.use_short_slot)
417 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
418 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
419 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
420
421 sinfo->sta_flags.set = 0;
422 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
423 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
424 BIT(NL80211_STA_FLAG_WME) |
425 BIT(NL80211_STA_FLAG_MFP) |
426 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
427 BIT(NL80211_STA_FLAG_TDLS_PEER);
428 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
429 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
430 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
431 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
432 if (test_sta_flag(sta, WLAN_STA_WME))
433 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
434 if (test_sta_flag(sta, WLAN_STA_MFP))
435 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
436 if (test_sta_flag(sta, WLAN_STA_AUTH))
437 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
438 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
439 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
440 }
441
442
443 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
444 int idx, u8 *mac, struct station_info *sinfo)
445 {
446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
447 struct sta_info *sta;
448 int ret = -ENOENT;
449
450 rcu_read_lock();
451
452 sta = sta_info_get_by_idx(sdata, idx);
453 if (sta) {
454 ret = 0;
455 memcpy(mac, sta->sta.addr, ETH_ALEN);
456 sta_set_sinfo(sta, sinfo);
457 }
458
459 rcu_read_unlock();
460
461 return ret;
462 }
463
464 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
465 int idx, struct survey_info *survey)
466 {
467 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
468
469 return drv_get_survey(local, idx, survey);
470 }
471
472 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
473 u8 *mac, struct station_info *sinfo)
474 {
475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
476 struct sta_info *sta;
477 int ret = -ENOENT;
478
479 rcu_read_lock();
480
481 sta = sta_info_get_bss(sdata, mac);
482 if (sta) {
483 ret = 0;
484 sta_set_sinfo(sta, sinfo);
485 }
486
487 rcu_read_unlock();
488
489 return ret;
490 }
491
492 static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
493 struct beacon_parameters *params)
494 {
495 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
496
497 bss_conf->ssid_len = params->ssid_len;
498
499 if (params->ssid_len)
500 memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
501
502 bss_conf->hidden_ssid =
503 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
504 }
505
506 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
507 u8 *resp, size_t resp_len)
508 {
509 struct sk_buff *new, *old;
510
511 if (!resp || !resp_len)
512 return -EINVAL;
513
514 old = rtnl_dereference(sdata->u.ap.probe_resp);
515
516 new = dev_alloc_skb(resp_len);
517 if (!new)
518 return -ENOMEM;
519
520 memcpy(skb_put(new, resp_len), resp, resp_len);
521
522 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
523 synchronize_rcu();
524
525 if (old)
526 dev_kfree_skb(old);
527
528 return 0;
529 }
530
531 /*
532 * This handles both adding a beacon and setting new beacon info
533 */
534 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
535 struct beacon_parameters *params)
536 {
537 struct beacon_data *new, *old;
538 int new_head_len, new_tail_len;
539 int size;
540 int err = -EINVAL;
541 u32 changed = 0;
542
543 old = rtnl_dereference(sdata->u.ap.beacon);
544
545 /* head must not be zero-length */
546 if (params->head && !params->head_len)
547 return -EINVAL;
548
549 /*
550 * This is a kludge. beacon interval should really be part
551 * of the beacon information.
552 */
553 if (params->interval &&
554 (sdata->vif.bss_conf.beacon_int != params->interval)) {
555 sdata->vif.bss_conf.beacon_int = params->interval;
556 ieee80211_bss_info_change_notify(sdata,
557 BSS_CHANGED_BEACON_INT);
558 }
559
560 /* Need to have a beacon head if we don't have one yet */
561 if (!params->head && !old)
562 return err;
563
564 /* sorry, no way to start beaconing without dtim period */
565 if (!params->dtim_period && !old)
566 return err;
567
568 /* new or old head? */
569 if (params->head)
570 new_head_len = params->head_len;
571 else
572 new_head_len = old->head_len;
573
574 /* new or old tail? */
575 if (params->tail || !old)
576 /* params->tail_len will be zero for !params->tail */
577 new_tail_len = params->tail_len;
578 else
579 new_tail_len = old->tail_len;
580
581 size = sizeof(*new) + new_head_len + new_tail_len;
582
583 new = kzalloc(size, GFP_KERNEL);
584 if (!new)
585 return -ENOMEM;
586
587 /* start filling the new info now */
588
589 /* new or old dtim period? */
590 if (params->dtim_period)
591 new->dtim_period = params->dtim_period;
592 else
593 new->dtim_period = old->dtim_period;
594
595 /*
596 * pointers go into the block we allocated,
597 * memory is | beacon_data | head | tail |
598 */
599 new->head = ((u8 *) new) + sizeof(*new);
600 new->tail = new->head + new_head_len;
601 new->head_len = new_head_len;
602 new->tail_len = new_tail_len;
603
604 /* copy in head */
605 if (params->head)
606 memcpy(new->head, params->head, new_head_len);
607 else
608 memcpy(new->head, old->head, new_head_len);
609
610 /* copy in optional tail */
611 if (params->tail)
612 memcpy(new->tail, params->tail, new_tail_len);
613 else
614 if (old)
615 memcpy(new->tail, old->tail, new_tail_len);
616
617 sdata->vif.bss_conf.dtim_period = new->dtim_period;
618
619 rcu_assign_pointer(sdata->u.ap.beacon, new);
620
621 synchronize_rcu();
622
623 kfree(old);
624
625 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
626 params->probe_resp_len);
627 if (!err)
628 changed |= BSS_CHANGED_AP_PROBE_RESP;
629
630 ieee80211_config_ap_ssid(sdata, params);
631 changed |= BSS_CHANGED_BEACON_ENABLED |
632 BSS_CHANGED_BEACON |
633 BSS_CHANGED_SSID;
634
635 ieee80211_bss_info_change_notify(sdata, changed);
636 return 0;
637 }
638
639 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
640 struct beacon_parameters *params)
641 {
642 struct ieee80211_sub_if_data *sdata;
643 struct beacon_data *old;
644 struct ieee80211_sub_if_data *vlan;
645 int ret;
646
647 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
648
649 old = rtnl_dereference(sdata->u.ap.beacon);
650 if (old)
651 return -EALREADY;
652
653 ret = ieee80211_config_beacon(sdata, params);
654 if (ret)
655 return ret;
656
657 /*
658 * Apply control port protocol, this allows us to
659 * not encrypt dynamic WEP control frames.
660 */
661 sdata->control_port_protocol = params->crypto.control_port_ethertype;
662 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
663 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
664 vlan->control_port_protocol =
665 params->crypto.control_port_ethertype;
666 vlan->control_port_no_encrypt =
667 params->crypto.control_port_no_encrypt;
668 }
669
670 return 0;
671 }
672
673 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
674 struct beacon_parameters *params)
675 {
676 struct ieee80211_sub_if_data *sdata;
677 struct beacon_data *old;
678
679 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
680
681 old = rtnl_dereference(sdata->u.ap.beacon);
682 if (!old)
683 return -ENOENT;
684
685 return ieee80211_config_beacon(sdata, params);
686 }
687
688 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
689 {
690 struct ieee80211_sub_if_data *sdata;
691 struct beacon_data *old;
692
693 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
694
695 old = rtnl_dereference(sdata->u.ap.beacon);
696 if (!old)
697 return -ENOENT;
698
699 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
700 synchronize_rcu();
701 kfree(old);
702
703 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
704 return 0;
705 }
706
707 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
708 struct iapp_layer2_update {
709 u8 da[ETH_ALEN]; /* broadcast */
710 u8 sa[ETH_ALEN]; /* STA addr */
711 __be16 len; /* 6 */
712 u8 dsap; /* 0 */
713 u8 ssap; /* 0 */
714 u8 control;
715 u8 xid_info[3];
716 } __packed;
717
718 static void ieee80211_send_layer2_update(struct sta_info *sta)
719 {
720 struct iapp_layer2_update *msg;
721 struct sk_buff *skb;
722
723 /* Send Level 2 Update Frame to update forwarding tables in layer 2
724 * bridge devices */
725
726 skb = dev_alloc_skb(sizeof(*msg));
727 if (!skb)
728 return;
729 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
730
731 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
732 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
733
734 memset(msg->da, 0xff, ETH_ALEN);
735 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
736 msg->len = htons(6);
737 msg->dsap = 0;
738 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
739 msg->control = 0xaf; /* XID response lsb.1111F101.
740 * F=0 (no poll command; unsolicited frame) */
741 msg->xid_info[0] = 0x81; /* XID format identifier */
742 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
743 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
744
745 skb->dev = sta->sdata->dev;
746 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
747 memset(skb->cb, 0, sizeof(skb->cb));
748 netif_rx_ni(skb);
749 }
750
751 static int sta_apply_parameters(struct ieee80211_local *local,
752 struct sta_info *sta,
753 struct station_parameters *params)
754 {
755 int ret = 0;
756 u32 rates;
757 int i, j;
758 struct ieee80211_supported_band *sband;
759 struct ieee80211_sub_if_data *sdata = sta->sdata;
760 u32 mask, set;
761
762 sband = local->hw.wiphy->bands[local->oper_channel->band];
763
764 mask = params->sta_flags_mask;
765 set = params->sta_flags_set;
766
767 /*
768 * In mesh mode, we can clear AUTHENTICATED flag but must
769 * also make ASSOCIATED follow appropriately for the driver
770 * API. See also below, after AUTHORIZED changes.
771 */
772 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
773 /* cfg80211 should not allow this in non-mesh modes */
774 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
775 return -EINVAL;
776
777 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
778 !test_sta_flag(sta, WLAN_STA_AUTH)) {
779 ret = sta_info_move_state_checked(sta,
780 IEEE80211_STA_AUTH);
781 if (ret)
782 return ret;
783 ret = sta_info_move_state_checked(sta,
784 IEEE80211_STA_ASSOC);
785 if (ret)
786 return ret;
787 }
788 }
789
790 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
791 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
792 ret = sta_info_move_state_checked(sta,
793 IEEE80211_STA_AUTHORIZED);
794 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
795 ret = sta_info_move_state_checked(sta,
796 IEEE80211_STA_ASSOC);
797 if (ret)
798 return ret;
799 }
800
801 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
802 /* cfg80211 should not allow this in non-mesh modes */
803 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
804 return -EINVAL;
805
806 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
807 test_sta_flag(sta, WLAN_STA_AUTH)) {
808 ret = sta_info_move_state_checked(sta,
809 IEEE80211_STA_AUTH);
810 if (ret)
811 return ret;
812 ret = sta_info_move_state_checked(sta,
813 IEEE80211_STA_NONE);
814 if (ret)
815 return ret;
816 }
817 }
818
819
820 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
821 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
822 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
823 else
824 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
825 }
826
827 if (mask & BIT(NL80211_STA_FLAG_WME)) {
828 if (set & BIT(NL80211_STA_FLAG_WME)) {
829 set_sta_flag(sta, WLAN_STA_WME);
830 sta->sta.wme = true;
831 } else {
832 clear_sta_flag(sta, WLAN_STA_WME);
833 sta->sta.wme = false;
834 }
835 }
836
837 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
838 if (set & BIT(NL80211_STA_FLAG_MFP))
839 set_sta_flag(sta, WLAN_STA_MFP);
840 else
841 clear_sta_flag(sta, WLAN_STA_MFP);
842 }
843
844 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
845 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
846 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
847 else
848 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
849 }
850
851 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
852 sta->sta.uapsd_queues = params->uapsd_queues;
853 sta->sta.max_sp = params->max_sp;
854 }
855
856 /*
857 * cfg80211 validates this (1-2007) and allows setting the AID
858 * only when creating a new station entry
859 */
860 if (params->aid)
861 sta->sta.aid = params->aid;
862
863 /*
864 * FIXME: updating the following information is racy when this
865 * function is called from ieee80211_change_station().
866 * However, all this information should be static so
867 * maybe we should just reject attemps to change it.
868 */
869
870 if (params->listen_interval >= 0)
871 sta->listen_interval = params->listen_interval;
872
873 if (params->supported_rates) {
874 rates = 0;
875
876 for (i = 0; i < params->supported_rates_len; i++) {
877 int rate = (params->supported_rates[i] & 0x7f) * 5;
878 for (j = 0; j < sband->n_bitrates; j++) {
879 if (sband->bitrates[j].bitrate == rate)
880 rates |= BIT(j);
881 }
882 }
883 sta->sta.supp_rates[local->oper_channel->band] = rates;
884 }
885
886 if (params->ht_capa)
887 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
888 params->ht_capa,
889 &sta->sta.ht_cap);
890
891 if (ieee80211_vif_is_mesh(&sdata->vif)) {
892 #ifdef CONFIG_MAC80211_MESH
893 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
894 switch (params->plink_state) {
895 case NL80211_PLINK_LISTEN:
896 case NL80211_PLINK_ESTAB:
897 case NL80211_PLINK_BLOCKED:
898 sta->plink_state = params->plink_state;
899 break;
900 default:
901 /* nothing */
902 break;
903 }
904 else
905 switch (params->plink_action) {
906 case PLINK_ACTION_OPEN:
907 mesh_plink_open(sta);
908 break;
909 case PLINK_ACTION_BLOCK:
910 mesh_plink_block(sta);
911 break;
912 }
913 #endif
914 }
915
916 return 0;
917 }
918
919 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
920 u8 *mac, struct station_parameters *params)
921 {
922 struct ieee80211_local *local = wiphy_priv(wiphy);
923 struct sta_info *sta;
924 struct ieee80211_sub_if_data *sdata;
925 int err;
926 int layer2_update;
927
928 if (params->vlan) {
929 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
930
931 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
932 sdata->vif.type != NL80211_IFTYPE_AP)
933 return -EINVAL;
934 } else
935 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
936
937 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
938 return -EINVAL;
939
940 if (is_multicast_ether_addr(mac))
941 return -EINVAL;
942
943 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
944 if (!sta)
945 return -ENOMEM;
946
947 sta_info_move_state(sta, IEEE80211_STA_AUTH);
948 sta_info_move_state(sta, IEEE80211_STA_ASSOC);
949
950 err = sta_apply_parameters(local, sta, params);
951 if (err) {
952 sta_info_free(local, sta);
953 return err;
954 }
955
956 /*
957 * for TDLS, rate control should be initialized only when supported
958 * rates are known.
959 */
960 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
961 rate_control_rate_init(sta);
962
963 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
964 sdata->vif.type == NL80211_IFTYPE_AP;
965
966 err = sta_info_insert_rcu(sta);
967 if (err) {
968 rcu_read_unlock();
969 return err;
970 }
971
972 if (layer2_update)
973 ieee80211_send_layer2_update(sta);
974
975 rcu_read_unlock();
976
977 return 0;
978 }
979
980 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
981 u8 *mac)
982 {
983 struct ieee80211_local *local = wiphy_priv(wiphy);
984 struct ieee80211_sub_if_data *sdata;
985
986 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
987
988 if (mac)
989 return sta_info_destroy_addr_bss(sdata, mac);
990
991 sta_info_flush(local, sdata);
992 return 0;
993 }
994
995 static int ieee80211_change_station(struct wiphy *wiphy,
996 struct net_device *dev,
997 u8 *mac,
998 struct station_parameters *params)
999 {
1000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1001 struct ieee80211_local *local = wiphy_priv(wiphy);
1002 struct sta_info *sta;
1003 struct ieee80211_sub_if_data *vlansdata;
1004
1005 mutex_lock(&local->sta_mtx);
1006
1007 sta = sta_info_get_bss(sdata, mac);
1008 if (!sta) {
1009 mutex_unlock(&local->sta_mtx);
1010 return -ENOENT;
1011 }
1012
1013 /* in station mode, supported rates are only valid with TDLS */
1014 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1015 params->supported_rates &&
1016 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1017 mutex_unlock(&local->sta_mtx);
1018 return -EINVAL;
1019 }
1020
1021 if (params->vlan && params->vlan != sta->sdata->dev) {
1022 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1023
1024 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1025 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1026 mutex_unlock(&local->sta_mtx);
1027 return -EINVAL;
1028 }
1029
1030 if (params->vlan->ieee80211_ptr->use_4addr) {
1031 if (vlansdata->u.vlan.sta) {
1032 mutex_unlock(&local->sta_mtx);
1033 return -EBUSY;
1034 }
1035
1036 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1037 }
1038
1039 sta->sdata = vlansdata;
1040 ieee80211_send_layer2_update(sta);
1041 }
1042
1043 sta_apply_parameters(local, sta, params);
1044
1045 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1046 rate_control_rate_init(sta);
1047
1048 mutex_unlock(&local->sta_mtx);
1049
1050 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1051 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1052 ieee80211_recalc_ps(local, -1);
1053
1054 return 0;
1055 }
1056
1057 #ifdef CONFIG_MAC80211_MESH
1058 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1059 u8 *dst, u8 *next_hop)
1060 {
1061 struct ieee80211_sub_if_data *sdata;
1062 struct mesh_path *mpath;
1063 struct sta_info *sta;
1064 int err;
1065
1066 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1067
1068 rcu_read_lock();
1069 sta = sta_info_get(sdata, next_hop);
1070 if (!sta) {
1071 rcu_read_unlock();
1072 return -ENOENT;
1073 }
1074
1075 err = mesh_path_add(dst, sdata);
1076 if (err) {
1077 rcu_read_unlock();
1078 return err;
1079 }
1080
1081 mpath = mesh_path_lookup(dst, sdata);
1082 if (!mpath) {
1083 rcu_read_unlock();
1084 return -ENXIO;
1085 }
1086 mesh_path_fix_nexthop(mpath, sta);
1087
1088 rcu_read_unlock();
1089 return 0;
1090 }
1091
1092 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1093 u8 *dst)
1094 {
1095 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1096
1097 if (dst)
1098 return mesh_path_del(dst, sdata);
1099
1100 mesh_path_flush_by_iface(sdata);
1101 return 0;
1102 }
1103
1104 static int ieee80211_change_mpath(struct wiphy *wiphy,
1105 struct net_device *dev,
1106 u8 *dst, u8 *next_hop)
1107 {
1108 struct ieee80211_sub_if_data *sdata;
1109 struct mesh_path *mpath;
1110 struct sta_info *sta;
1111
1112 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1113
1114 rcu_read_lock();
1115
1116 sta = sta_info_get(sdata, next_hop);
1117 if (!sta) {
1118 rcu_read_unlock();
1119 return -ENOENT;
1120 }
1121
1122 mpath = mesh_path_lookup(dst, sdata);
1123 if (!mpath) {
1124 rcu_read_unlock();
1125 return -ENOENT;
1126 }
1127
1128 mesh_path_fix_nexthop(mpath, sta);
1129
1130 rcu_read_unlock();
1131 return 0;
1132 }
1133
1134 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1135 struct mpath_info *pinfo)
1136 {
1137 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1138
1139 if (next_hop_sta)
1140 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1141 else
1142 memset(next_hop, 0, ETH_ALEN);
1143
1144 pinfo->generation = mesh_paths_generation;
1145
1146 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1147 MPATH_INFO_SN |
1148 MPATH_INFO_METRIC |
1149 MPATH_INFO_EXPTIME |
1150 MPATH_INFO_DISCOVERY_TIMEOUT |
1151 MPATH_INFO_DISCOVERY_RETRIES |
1152 MPATH_INFO_FLAGS;
1153
1154 pinfo->frame_qlen = mpath->frame_queue.qlen;
1155 pinfo->sn = mpath->sn;
1156 pinfo->metric = mpath->metric;
1157 if (time_before(jiffies, mpath->exp_time))
1158 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1159 pinfo->discovery_timeout =
1160 jiffies_to_msecs(mpath->discovery_timeout);
1161 pinfo->discovery_retries = mpath->discovery_retries;
1162 pinfo->flags = 0;
1163 if (mpath->flags & MESH_PATH_ACTIVE)
1164 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1165 if (mpath->flags & MESH_PATH_RESOLVING)
1166 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1167 if (mpath->flags & MESH_PATH_SN_VALID)
1168 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1169 if (mpath->flags & MESH_PATH_FIXED)
1170 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1171 if (mpath->flags & MESH_PATH_RESOLVING)
1172 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1173
1174 pinfo->flags = mpath->flags;
1175 }
1176
1177 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1178 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1179
1180 {
1181 struct ieee80211_sub_if_data *sdata;
1182 struct mesh_path *mpath;
1183
1184 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1185
1186 rcu_read_lock();
1187 mpath = mesh_path_lookup(dst, sdata);
1188 if (!mpath) {
1189 rcu_read_unlock();
1190 return -ENOENT;
1191 }
1192 memcpy(dst, mpath->dst, ETH_ALEN);
1193 mpath_set_pinfo(mpath, next_hop, pinfo);
1194 rcu_read_unlock();
1195 return 0;
1196 }
1197
1198 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1199 int idx, u8 *dst, u8 *next_hop,
1200 struct mpath_info *pinfo)
1201 {
1202 struct ieee80211_sub_if_data *sdata;
1203 struct mesh_path *mpath;
1204
1205 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1206
1207 rcu_read_lock();
1208 mpath = mesh_path_lookup_by_idx(idx, sdata);
1209 if (!mpath) {
1210 rcu_read_unlock();
1211 return -ENOENT;
1212 }
1213 memcpy(dst, mpath->dst, ETH_ALEN);
1214 mpath_set_pinfo(mpath, next_hop, pinfo);
1215 rcu_read_unlock();
1216 return 0;
1217 }
1218
1219 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1220 struct net_device *dev,
1221 struct mesh_config *conf)
1222 {
1223 struct ieee80211_sub_if_data *sdata;
1224 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1225
1226 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1227 return 0;
1228 }
1229
1230 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1231 {
1232 return (mask >> (parm-1)) & 0x1;
1233 }
1234
1235 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1236 const struct mesh_setup *setup)
1237 {
1238 u8 *new_ie;
1239 const u8 *old_ie;
1240 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1241 struct ieee80211_sub_if_data, u.mesh);
1242
1243 /* allocate information elements */
1244 new_ie = NULL;
1245 old_ie = ifmsh->ie;
1246
1247 if (setup->ie_len) {
1248 new_ie = kmemdup(setup->ie, setup->ie_len,
1249 GFP_KERNEL);
1250 if (!new_ie)
1251 return -ENOMEM;
1252 }
1253 ifmsh->ie_len = setup->ie_len;
1254 ifmsh->ie = new_ie;
1255 kfree(old_ie);
1256
1257 /* now copy the rest of the setup parameters */
1258 ifmsh->mesh_id_len = setup->mesh_id_len;
1259 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1260 ifmsh->mesh_pp_id = setup->path_sel_proto;
1261 ifmsh->mesh_pm_id = setup->path_metric;
1262 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1263 if (setup->is_authenticated)
1264 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1265 if (setup->is_secure)
1266 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1267
1268 /* mcast rate setting in Mesh Node */
1269 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1270 sizeof(setup->mcast_rate));
1271
1272 return 0;
1273 }
1274
1275 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1276 struct net_device *dev, u32 mask,
1277 const struct mesh_config *nconf)
1278 {
1279 struct mesh_config *conf;
1280 struct ieee80211_sub_if_data *sdata;
1281 struct ieee80211_if_mesh *ifmsh;
1282
1283 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1284 ifmsh = &sdata->u.mesh;
1285
1286 /* Set the config options which we are interested in setting */
1287 conf = &(sdata->u.mesh.mshcfg);
1288 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1289 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1290 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1291 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1292 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1293 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1294 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1295 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1296 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1297 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1298 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1299 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1300 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1301 conf->dot11MeshTTL = nconf->element_ttl;
1302 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1303 conf->auto_open_plinks = nconf->auto_open_plinks;
1304 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1305 conf->dot11MeshHWMPmaxPREQretries =
1306 nconf->dot11MeshHWMPmaxPREQretries;
1307 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1308 conf->path_refresh_time = nconf->path_refresh_time;
1309 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1310 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1311 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1312 conf->dot11MeshHWMPactivePathTimeout =
1313 nconf->dot11MeshHWMPactivePathTimeout;
1314 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1315 conf->dot11MeshHWMPpreqMinInterval =
1316 nconf->dot11MeshHWMPpreqMinInterval;
1317 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1318 conf->dot11MeshHWMPperrMinInterval =
1319 nconf->dot11MeshHWMPperrMinInterval;
1320 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1321 mask))
1322 conf->dot11MeshHWMPnetDiameterTraversalTime =
1323 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1324 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1325 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1326 ieee80211_mesh_root_setup(ifmsh);
1327 }
1328 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1329 /* our current gate announcement implementation rides on root
1330 * announcements, so require this ifmsh to also be a root node
1331 * */
1332 if (nconf->dot11MeshGateAnnouncementProtocol &&
1333 !conf->dot11MeshHWMPRootMode) {
1334 conf->dot11MeshHWMPRootMode = 1;
1335 ieee80211_mesh_root_setup(ifmsh);
1336 }
1337 conf->dot11MeshGateAnnouncementProtocol =
1338 nconf->dot11MeshGateAnnouncementProtocol;
1339 }
1340 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1341 conf->dot11MeshHWMPRannInterval =
1342 nconf->dot11MeshHWMPRannInterval;
1343 }
1344 return 0;
1345 }
1346
1347 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1348 const struct mesh_config *conf,
1349 const struct mesh_setup *setup)
1350 {
1351 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1352 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1353 int err;
1354
1355 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1356 err = copy_mesh_setup(ifmsh, setup);
1357 if (err)
1358 return err;
1359 ieee80211_start_mesh(sdata);
1360
1361 return 0;
1362 }
1363
1364 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1365 {
1366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1367
1368 ieee80211_stop_mesh(sdata);
1369
1370 return 0;
1371 }
1372 #endif
1373
1374 static int ieee80211_change_bss(struct wiphy *wiphy,
1375 struct net_device *dev,
1376 struct bss_parameters *params)
1377 {
1378 struct ieee80211_sub_if_data *sdata;
1379 u32 changed = 0;
1380
1381 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1382
1383 if (params->use_cts_prot >= 0) {
1384 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1385 changed |= BSS_CHANGED_ERP_CTS_PROT;
1386 }
1387 if (params->use_short_preamble >= 0) {
1388 sdata->vif.bss_conf.use_short_preamble =
1389 params->use_short_preamble;
1390 changed |= BSS_CHANGED_ERP_PREAMBLE;
1391 }
1392
1393 if (!sdata->vif.bss_conf.use_short_slot &&
1394 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1395 sdata->vif.bss_conf.use_short_slot = true;
1396 changed |= BSS_CHANGED_ERP_SLOT;
1397 }
1398
1399 if (params->use_short_slot_time >= 0) {
1400 sdata->vif.bss_conf.use_short_slot =
1401 params->use_short_slot_time;
1402 changed |= BSS_CHANGED_ERP_SLOT;
1403 }
1404
1405 if (params->basic_rates) {
1406 int i, j;
1407 u32 rates = 0;
1408 struct ieee80211_local *local = wiphy_priv(wiphy);
1409 struct ieee80211_supported_band *sband =
1410 wiphy->bands[local->oper_channel->band];
1411
1412 for (i = 0; i < params->basic_rates_len; i++) {
1413 int rate = (params->basic_rates[i] & 0x7f) * 5;
1414 for (j = 0; j < sband->n_bitrates; j++) {
1415 if (sband->bitrates[j].bitrate == rate)
1416 rates |= BIT(j);
1417 }
1418 }
1419 sdata->vif.bss_conf.basic_rates = rates;
1420 changed |= BSS_CHANGED_BASIC_RATES;
1421 }
1422
1423 if (params->ap_isolate >= 0) {
1424 if (params->ap_isolate)
1425 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1426 else
1427 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1428 }
1429
1430 if (params->ht_opmode >= 0) {
1431 sdata->vif.bss_conf.ht_operation_mode =
1432 (u16) params->ht_opmode;
1433 changed |= BSS_CHANGED_HT;
1434 }
1435
1436 ieee80211_bss_info_change_notify(sdata, changed);
1437
1438 return 0;
1439 }
1440
1441 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1442 struct net_device *dev,
1443 struct ieee80211_txq_params *params)
1444 {
1445 struct ieee80211_local *local = wiphy_priv(wiphy);
1446 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1447 struct ieee80211_tx_queue_params p;
1448
1449 if (!local->ops->conf_tx)
1450 return -EOPNOTSUPP;
1451
1452 memset(&p, 0, sizeof(p));
1453 p.aifs = params->aifs;
1454 p.cw_max = params->cwmax;
1455 p.cw_min = params->cwmin;
1456 p.txop = params->txop;
1457
1458 /*
1459 * Setting tx queue params disables u-apsd because it's only
1460 * called in master mode.
1461 */
1462 p.uapsd = false;
1463
1464 if (params->queue >= local->hw.queues)
1465 return -EINVAL;
1466
1467 sdata->tx_conf[params->queue] = p;
1468 if (drv_conf_tx(local, sdata, params->queue, &p)) {
1469 wiphy_debug(local->hw.wiphy,
1470 "failed to set TX queue parameters for queue %d\n",
1471 params->queue);
1472 return -EINVAL;
1473 }
1474
1475 return 0;
1476 }
1477
1478 static int ieee80211_set_channel(struct wiphy *wiphy,
1479 struct net_device *netdev,
1480 struct ieee80211_channel *chan,
1481 enum nl80211_channel_type channel_type)
1482 {
1483 struct ieee80211_local *local = wiphy_priv(wiphy);
1484 struct ieee80211_sub_if_data *sdata = NULL;
1485 struct ieee80211_channel *old_oper;
1486 enum nl80211_channel_type old_oper_type;
1487 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1488
1489 if (netdev)
1490 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1491
1492 switch (ieee80211_get_channel_mode(local, NULL)) {
1493 case CHAN_MODE_HOPPING:
1494 return -EBUSY;
1495 case CHAN_MODE_FIXED:
1496 if (local->oper_channel != chan)
1497 return -EBUSY;
1498 if (!sdata && local->_oper_channel_type == channel_type)
1499 return 0;
1500 break;
1501 case CHAN_MODE_UNDEFINED:
1502 break;
1503 }
1504
1505 if (sdata)
1506 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1507 old_oper_type = local->_oper_channel_type;
1508
1509 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1510 return -EBUSY;
1511
1512 old_oper = local->oper_channel;
1513 local->oper_channel = chan;
1514
1515 /* Update driver if changes were actually made. */
1516 if ((old_oper != local->oper_channel) ||
1517 (old_oper_type != local->_oper_channel_type))
1518 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1519
1520 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1521 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1522 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1523
1524 return 0;
1525 }
1526
1527 #ifdef CONFIG_PM
1528 static int ieee80211_suspend(struct wiphy *wiphy,
1529 struct cfg80211_wowlan *wowlan)
1530 {
1531 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1532 }
1533
1534 static int ieee80211_resume(struct wiphy *wiphy)
1535 {
1536 return __ieee80211_resume(wiphy_priv(wiphy));
1537 }
1538 #else
1539 #define ieee80211_suspend NULL
1540 #define ieee80211_resume NULL
1541 #endif
1542
1543 static int ieee80211_scan(struct wiphy *wiphy,
1544 struct net_device *dev,
1545 struct cfg80211_scan_request *req)
1546 {
1547 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548
1549 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1550 case NL80211_IFTYPE_STATION:
1551 case NL80211_IFTYPE_ADHOC:
1552 case NL80211_IFTYPE_MESH_POINT:
1553 case NL80211_IFTYPE_P2P_CLIENT:
1554 break;
1555 case NL80211_IFTYPE_P2P_GO:
1556 if (sdata->local->ops->hw_scan)
1557 break;
1558 /*
1559 * FIXME: implement NoA while scanning in software,
1560 * for now fall through to allow scanning only when
1561 * beaconing hasn't been configured yet
1562 */
1563 case NL80211_IFTYPE_AP:
1564 if (sdata->u.ap.beacon)
1565 return -EOPNOTSUPP;
1566 break;
1567 default:
1568 return -EOPNOTSUPP;
1569 }
1570
1571 return ieee80211_request_scan(sdata, req);
1572 }
1573
1574 static int
1575 ieee80211_sched_scan_start(struct wiphy *wiphy,
1576 struct net_device *dev,
1577 struct cfg80211_sched_scan_request *req)
1578 {
1579 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1580
1581 if (!sdata->local->ops->sched_scan_start)
1582 return -EOPNOTSUPP;
1583
1584 return ieee80211_request_sched_scan_start(sdata, req);
1585 }
1586
1587 static int
1588 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1589 {
1590 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1591
1592 if (!sdata->local->ops->sched_scan_stop)
1593 return -EOPNOTSUPP;
1594
1595 return ieee80211_request_sched_scan_stop(sdata);
1596 }
1597
1598 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1599 struct cfg80211_auth_request *req)
1600 {
1601 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1602 }
1603
1604 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1605 struct cfg80211_assoc_request *req)
1606 {
1607 struct ieee80211_local *local = wiphy_priv(wiphy);
1608 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610 switch (ieee80211_get_channel_mode(local, sdata)) {
1611 case CHAN_MODE_HOPPING:
1612 return -EBUSY;
1613 case CHAN_MODE_FIXED:
1614 if (local->oper_channel == req->bss->channel)
1615 break;
1616 return -EBUSY;
1617 case CHAN_MODE_UNDEFINED:
1618 break;
1619 }
1620
1621 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1622 }
1623
1624 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1625 struct cfg80211_deauth_request *req,
1626 void *cookie)
1627 {
1628 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1629 req, cookie);
1630 }
1631
1632 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1633 struct cfg80211_disassoc_request *req,
1634 void *cookie)
1635 {
1636 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1637 req, cookie);
1638 }
1639
1640 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1641 struct cfg80211_ibss_params *params)
1642 {
1643 struct ieee80211_local *local = wiphy_priv(wiphy);
1644 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1645
1646 switch (ieee80211_get_channel_mode(local, sdata)) {
1647 case CHAN_MODE_HOPPING:
1648 return -EBUSY;
1649 case CHAN_MODE_FIXED:
1650 if (!params->channel_fixed)
1651 return -EBUSY;
1652 if (local->oper_channel == params->channel)
1653 break;
1654 return -EBUSY;
1655 case CHAN_MODE_UNDEFINED:
1656 break;
1657 }
1658
1659 return ieee80211_ibss_join(sdata, params);
1660 }
1661
1662 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1663 {
1664 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1665
1666 return ieee80211_ibss_leave(sdata);
1667 }
1668
1669 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1670 {
1671 struct ieee80211_local *local = wiphy_priv(wiphy);
1672 int err;
1673
1674 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1675 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1676
1677 if (err)
1678 return err;
1679 }
1680
1681 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1682 err = drv_set_coverage_class(local, wiphy->coverage_class);
1683
1684 if (err)
1685 return err;
1686 }
1687
1688 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1689 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1690
1691 if (err)
1692 return err;
1693 }
1694
1695 if (changed & WIPHY_PARAM_RETRY_SHORT)
1696 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1697 if (changed & WIPHY_PARAM_RETRY_LONG)
1698 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1699 if (changed &
1700 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1701 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1702
1703 return 0;
1704 }
1705
1706 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1707 enum nl80211_tx_power_setting type, int mbm)
1708 {
1709 struct ieee80211_local *local = wiphy_priv(wiphy);
1710 struct ieee80211_channel *chan = local->hw.conf.channel;
1711 u32 changes = 0;
1712
1713 switch (type) {
1714 case NL80211_TX_POWER_AUTOMATIC:
1715 local->user_power_level = -1;
1716 break;
1717 case NL80211_TX_POWER_LIMITED:
1718 if (mbm < 0 || (mbm % 100))
1719 return -EOPNOTSUPP;
1720 local->user_power_level = MBM_TO_DBM(mbm);
1721 break;
1722 case NL80211_TX_POWER_FIXED:
1723 if (mbm < 0 || (mbm % 100))
1724 return -EOPNOTSUPP;
1725 /* TODO: move to cfg80211 when it knows the channel */
1726 if (MBM_TO_DBM(mbm) > chan->max_power)
1727 return -EINVAL;
1728 local->user_power_level = MBM_TO_DBM(mbm);
1729 break;
1730 }
1731
1732 ieee80211_hw_config(local, changes);
1733
1734 return 0;
1735 }
1736
1737 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1738 {
1739 struct ieee80211_local *local = wiphy_priv(wiphy);
1740
1741 *dbm = local->hw.conf.power_level;
1742
1743 return 0;
1744 }
1745
1746 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1747 const u8 *addr)
1748 {
1749 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1750
1751 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1752
1753 return 0;
1754 }
1755
1756 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1757 {
1758 struct ieee80211_local *local = wiphy_priv(wiphy);
1759
1760 drv_rfkill_poll(local);
1761 }
1762
1763 #ifdef CONFIG_NL80211_TESTMODE
1764 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1765 {
1766 struct ieee80211_local *local = wiphy_priv(wiphy);
1767
1768 if (!local->ops->testmode_cmd)
1769 return -EOPNOTSUPP;
1770
1771 return local->ops->testmode_cmd(&local->hw, data, len);
1772 }
1773
1774 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1775 struct sk_buff *skb,
1776 struct netlink_callback *cb,
1777 void *data, int len)
1778 {
1779 struct ieee80211_local *local = wiphy_priv(wiphy);
1780
1781 if (!local->ops->testmode_dump)
1782 return -EOPNOTSUPP;
1783
1784 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1785 }
1786 #endif
1787
1788 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1789 enum ieee80211_smps_mode smps_mode)
1790 {
1791 const u8 *ap;
1792 enum ieee80211_smps_mode old_req;
1793 int err;
1794
1795 lockdep_assert_held(&sdata->u.mgd.mtx);
1796
1797 old_req = sdata->u.mgd.req_smps;
1798 sdata->u.mgd.req_smps = smps_mode;
1799
1800 if (old_req == smps_mode &&
1801 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1802 return 0;
1803
1804 /*
1805 * If not associated, or current association is not an HT
1806 * association, there's no need to send an action frame.
1807 */
1808 if (!sdata->u.mgd.associated ||
1809 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1810 mutex_lock(&sdata->local->iflist_mtx);
1811 ieee80211_recalc_smps(sdata->local);
1812 mutex_unlock(&sdata->local->iflist_mtx);
1813 return 0;
1814 }
1815
1816 ap = sdata->u.mgd.associated->bssid;
1817
1818 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1819 if (sdata->u.mgd.powersave)
1820 smps_mode = IEEE80211_SMPS_DYNAMIC;
1821 else
1822 smps_mode = IEEE80211_SMPS_OFF;
1823 }
1824
1825 /* send SM PS frame to AP */
1826 err = ieee80211_send_smps_action(sdata, smps_mode,
1827 ap, ap);
1828 if (err)
1829 sdata->u.mgd.req_smps = old_req;
1830
1831 return err;
1832 }
1833
1834 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1835 bool enabled, int timeout)
1836 {
1837 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1838 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1839
1840 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1841 return -EOPNOTSUPP;
1842
1843 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1844 return -EOPNOTSUPP;
1845
1846 if (enabled == sdata->u.mgd.powersave &&
1847 timeout == local->dynamic_ps_forced_timeout)
1848 return 0;
1849
1850 sdata->u.mgd.powersave = enabled;
1851 local->dynamic_ps_forced_timeout = timeout;
1852
1853 /* no change, but if automatic follow powersave */
1854 mutex_lock(&sdata->u.mgd.mtx);
1855 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1856 mutex_unlock(&sdata->u.mgd.mtx);
1857
1858 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1859 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1860
1861 ieee80211_recalc_ps(local, -1);
1862
1863 return 0;
1864 }
1865
1866 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1867 struct net_device *dev,
1868 s32 rssi_thold, u32 rssi_hyst)
1869 {
1870 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1871 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1872 struct ieee80211_vif *vif = &sdata->vif;
1873 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1874
1875 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1876 rssi_hyst == bss_conf->cqm_rssi_hyst)
1877 return 0;
1878
1879 bss_conf->cqm_rssi_thold = rssi_thold;
1880 bss_conf->cqm_rssi_hyst = rssi_hyst;
1881
1882 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1883 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1884 return -EOPNOTSUPP;
1885 return 0;
1886 }
1887
1888 /* tell the driver upon association, unless already associated */
1889 if (sdata->u.mgd.associated)
1890 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1891
1892 return 0;
1893 }
1894
1895 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1896 struct net_device *dev,
1897 const u8 *addr,
1898 const struct cfg80211_bitrate_mask *mask)
1899 {
1900 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1901 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1902 int i, ret;
1903
1904 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1905 ret = drv_set_bitrate_mask(local, sdata, mask);
1906 if (ret)
1907 return ret;
1908 }
1909
1910 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1911 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1912
1913 return 0;
1914 }
1915
1916 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1917 struct net_device *dev,
1918 struct ieee80211_channel *chan,
1919 enum nl80211_channel_type chantype,
1920 unsigned int duration, u64 *cookie)
1921 {
1922 int ret;
1923 u32 random_cookie;
1924
1925 lockdep_assert_held(&local->mtx);
1926
1927 if (local->hw_roc_cookie)
1928 return -EBUSY;
1929 /* must be nonzero */
1930 random_cookie = random32() | 1;
1931
1932 *cookie = random_cookie;
1933 local->hw_roc_dev = dev;
1934 local->hw_roc_cookie = random_cookie;
1935 local->hw_roc_channel = chan;
1936 local->hw_roc_channel_type = chantype;
1937 local->hw_roc_duration = duration;
1938 ret = drv_remain_on_channel(local, chan, chantype, duration);
1939 if (ret) {
1940 local->hw_roc_channel = NULL;
1941 local->hw_roc_cookie = 0;
1942 }
1943
1944 return ret;
1945 }
1946
1947 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1948 struct net_device *dev,
1949 struct ieee80211_channel *chan,
1950 enum nl80211_channel_type channel_type,
1951 unsigned int duration,
1952 u64 *cookie)
1953 {
1954 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1955 struct ieee80211_local *local = sdata->local;
1956
1957 if (local->ops->remain_on_channel) {
1958 int ret;
1959
1960 mutex_lock(&local->mtx);
1961 ret = ieee80211_remain_on_channel_hw(local, dev,
1962 chan, channel_type,
1963 duration, cookie);
1964 local->hw_roc_for_tx = false;
1965 mutex_unlock(&local->mtx);
1966
1967 return ret;
1968 }
1969
1970 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1971 duration, cookie);
1972 }
1973
1974 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1975 u64 cookie)
1976 {
1977 int ret;
1978
1979 lockdep_assert_held(&local->mtx);
1980
1981 if (local->hw_roc_cookie != cookie)
1982 return -ENOENT;
1983
1984 ret = drv_cancel_remain_on_channel(local);
1985 if (ret)
1986 return ret;
1987
1988 local->hw_roc_cookie = 0;
1989 local->hw_roc_channel = NULL;
1990
1991 ieee80211_recalc_idle(local);
1992
1993 return 0;
1994 }
1995
1996 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1997 struct net_device *dev,
1998 u64 cookie)
1999 {
2000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2001 struct ieee80211_local *local = sdata->local;
2002
2003 if (local->ops->cancel_remain_on_channel) {
2004 int ret;
2005
2006 mutex_lock(&local->mtx);
2007 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2008 mutex_unlock(&local->mtx);
2009
2010 return ret;
2011 }
2012
2013 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2014 }
2015
2016 static enum work_done_result
2017 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2018 {
2019 /*
2020 * Use the data embedded in the work struct for reporting
2021 * here so if the driver mangled the SKB before dropping
2022 * it (which is the only way we really should get here)
2023 * then we don't report mangled data.
2024 *
2025 * If there was no wait time, then by the time we get here
2026 * the driver will likely not have reported the status yet,
2027 * so in that case userspace will have to deal with it.
2028 */
2029
2030 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2031 cfg80211_mgmt_tx_status(wk->sdata->dev,
2032 (unsigned long) wk->offchan_tx.frame,
2033 wk->ie, wk->ie_len, false, GFP_KERNEL);
2034
2035 return WORK_DONE_DESTROY;
2036 }
2037
2038 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2039 struct ieee80211_channel *chan, bool offchan,
2040 enum nl80211_channel_type channel_type,
2041 bool channel_type_valid, unsigned int wait,
2042 const u8 *buf, size_t len, bool no_cck,
2043 bool dont_wait_for_ack, u64 *cookie)
2044 {
2045 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2046 struct ieee80211_local *local = sdata->local;
2047 struct sk_buff *skb;
2048 struct sta_info *sta;
2049 struct ieee80211_work *wk;
2050 const struct ieee80211_mgmt *mgmt = (void *)buf;
2051 u32 flags;
2052 bool is_offchan = false;
2053
2054 if (dont_wait_for_ack)
2055 flags = IEEE80211_TX_CTL_NO_ACK;
2056 else
2057 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2058 IEEE80211_TX_CTL_REQ_TX_STATUS;
2059
2060 /* Check that we are on the requested channel for transmission */
2061 if (chan != local->tmp_channel &&
2062 chan != local->oper_channel)
2063 is_offchan = true;
2064 if (channel_type_valid &&
2065 (channel_type != local->tmp_channel_type &&
2066 channel_type != local->_oper_channel_type))
2067 is_offchan = true;
2068
2069 if (chan == local->hw_roc_channel) {
2070 /* TODO: check channel type? */
2071 is_offchan = false;
2072 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2073 }
2074
2075 if (no_cck)
2076 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2077
2078 if (is_offchan && !offchan)
2079 return -EBUSY;
2080
2081 switch (sdata->vif.type) {
2082 case NL80211_IFTYPE_ADHOC:
2083 case NL80211_IFTYPE_AP:
2084 case NL80211_IFTYPE_AP_VLAN:
2085 case NL80211_IFTYPE_P2P_GO:
2086 case NL80211_IFTYPE_MESH_POINT:
2087 if (!ieee80211_is_action(mgmt->frame_control) ||
2088 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2089 break;
2090 rcu_read_lock();
2091 sta = sta_info_get(sdata, mgmt->da);
2092 rcu_read_unlock();
2093 if (!sta)
2094 return -ENOLINK;
2095 break;
2096 case NL80211_IFTYPE_STATION:
2097 case NL80211_IFTYPE_P2P_CLIENT:
2098 break;
2099 default:
2100 return -EOPNOTSUPP;
2101 }
2102
2103 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2104 if (!skb)
2105 return -ENOMEM;
2106 skb_reserve(skb, local->hw.extra_tx_headroom);
2107
2108 memcpy(skb_put(skb, len), buf, len);
2109
2110 IEEE80211_SKB_CB(skb)->flags = flags;
2111
2112 skb->dev = sdata->dev;
2113
2114 *cookie = (unsigned long) skb;
2115
2116 if (is_offchan && local->ops->remain_on_channel) {
2117 unsigned int duration;
2118 int ret;
2119
2120 mutex_lock(&local->mtx);
2121 /*
2122 * If the duration is zero, then the driver
2123 * wouldn't actually do anything. Set it to
2124 * 100 for now.
2125 *
2126 * TODO: cancel the off-channel operation
2127 * when we get the SKB's TX status and
2128 * the wait time was zero before.
2129 */
2130 duration = 100;
2131 if (wait)
2132 duration = wait;
2133 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2134 channel_type,
2135 duration, cookie);
2136 if (ret) {
2137 kfree_skb(skb);
2138 mutex_unlock(&local->mtx);
2139 return ret;
2140 }
2141
2142 local->hw_roc_for_tx = true;
2143 local->hw_roc_duration = wait;
2144
2145 /*
2146 * queue up frame for transmission after
2147 * ieee80211_ready_on_channel call
2148 */
2149
2150 /* modify cookie to prevent API mismatches */
2151 *cookie ^= 2;
2152 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2153 local->hw_roc_skb = skb;
2154 local->hw_roc_skb_for_status = skb;
2155 mutex_unlock(&local->mtx);
2156
2157 return 0;
2158 }
2159
2160 /*
2161 * Can transmit right away if the channel was the
2162 * right one and there's no wait involved... If a
2163 * wait is involved, we might otherwise not be on
2164 * the right channel for long enough!
2165 */
2166 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2167 ieee80211_tx_skb(sdata, skb);
2168 return 0;
2169 }
2170
2171 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2172 if (!wk) {
2173 kfree_skb(skb);
2174 return -ENOMEM;
2175 }
2176
2177 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2178 wk->chan = chan;
2179 wk->chan_type = channel_type;
2180 wk->sdata = sdata;
2181 wk->done = ieee80211_offchan_tx_done;
2182 wk->offchan_tx.frame = skb;
2183 wk->offchan_tx.wait = wait;
2184 wk->ie_len = len;
2185 memcpy(wk->ie, buf, len);
2186
2187 ieee80211_add_work(wk);
2188 return 0;
2189 }
2190
2191 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2192 struct net_device *dev,
2193 u64 cookie)
2194 {
2195 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2196 struct ieee80211_local *local = sdata->local;
2197 struct ieee80211_work *wk;
2198 int ret = -ENOENT;
2199
2200 mutex_lock(&local->mtx);
2201
2202 if (local->ops->cancel_remain_on_channel) {
2203 cookie ^= 2;
2204 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2205
2206 if (ret == 0) {
2207 kfree_skb(local->hw_roc_skb);
2208 local->hw_roc_skb = NULL;
2209 local->hw_roc_skb_for_status = NULL;
2210 }
2211
2212 mutex_unlock(&local->mtx);
2213
2214 return ret;
2215 }
2216
2217 list_for_each_entry(wk, &local->work_list, list) {
2218 if (wk->sdata != sdata)
2219 continue;
2220
2221 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2222 continue;
2223
2224 if (cookie != (unsigned long) wk->offchan_tx.frame)
2225 continue;
2226
2227 wk->timeout = jiffies;
2228
2229 ieee80211_queue_work(&local->hw, &local->work_work);
2230 ret = 0;
2231 break;
2232 }
2233 mutex_unlock(&local->mtx);
2234
2235 return ret;
2236 }
2237
2238 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2239 struct net_device *dev,
2240 u16 frame_type, bool reg)
2241 {
2242 struct ieee80211_local *local = wiphy_priv(wiphy);
2243
2244 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2245 return;
2246
2247 if (reg)
2248 local->probe_req_reg++;
2249 else
2250 local->probe_req_reg--;
2251
2252 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2253 }
2254
2255 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2256 {
2257 struct ieee80211_local *local = wiphy_priv(wiphy);
2258
2259 if (local->started)
2260 return -EOPNOTSUPP;
2261
2262 return drv_set_antenna(local, tx_ant, rx_ant);
2263 }
2264
2265 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2266 {
2267 struct ieee80211_local *local = wiphy_priv(wiphy);
2268
2269 return drv_get_antenna(local, tx_ant, rx_ant);
2270 }
2271
2272 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2273 {
2274 struct ieee80211_local *local = wiphy_priv(wiphy);
2275
2276 return drv_set_ringparam(local, tx, rx);
2277 }
2278
2279 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2280 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2281 {
2282 struct ieee80211_local *local = wiphy_priv(wiphy);
2283
2284 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2285 }
2286
2287 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2288 struct net_device *dev,
2289 struct cfg80211_gtk_rekey_data *data)
2290 {
2291 struct ieee80211_local *local = wiphy_priv(wiphy);
2292 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2293
2294 if (!local->ops->set_rekey_data)
2295 return -EOPNOTSUPP;
2296
2297 drv_set_rekey_data(local, sdata, data);
2298
2299 return 0;
2300 }
2301
2302 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2303 {
2304 u8 *pos = (void *)skb_put(skb, 7);
2305
2306 *pos++ = WLAN_EID_EXT_CAPABILITY;
2307 *pos++ = 5; /* len */
2308 *pos++ = 0x0;
2309 *pos++ = 0x0;
2310 *pos++ = 0x0;
2311 *pos++ = 0x0;
2312 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2313 }
2314
2315 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2316 {
2317 struct ieee80211_local *local = sdata->local;
2318 u16 capab;
2319
2320 capab = 0;
2321 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2322 return capab;
2323
2324 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2325 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2326 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2327 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2328
2329 return capab;
2330 }
2331
2332 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2333 u8 *peer, u8 *bssid)
2334 {
2335 struct ieee80211_tdls_lnkie *lnkid;
2336
2337 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2338
2339 lnkid->ie_type = WLAN_EID_LINK_ID;
2340 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2341
2342 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2343 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2344 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2345 }
2346
2347 static int
2348 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2349 u8 *peer, u8 action_code, u8 dialog_token,
2350 u16 status_code, struct sk_buff *skb)
2351 {
2352 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2353 struct ieee80211_tdls_data *tf;
2354
2355 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2356
2357 memcpy(tf->da, peer, ETH_ALEN);
2358 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2359 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2360 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2361
2362 switch (action_code) {
2363 case WLAN_TDLS_SETUP_REQUEST:
2364 tf->category = WLAN_CATEGORY_TDLS;
2365 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2366
2367 skb_put(skb, sizeof(tf->u.setup_req));
2368 tf->u.setup_req.dialog_token = dialog_token;
2369 tf->u.setup_req.capability =
2370 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2371
2372 ieee80211_add_srates_ie(&sdata->vif, skb);
2373 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2374 ieee80211_tdls_add_ext_capab(skb);
2375 break;
2376 case WLAN_TDLS_SETUP_RESPONSE:
2377 tf->category = WLAN_CATEGORY_TDLS;
2378 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2379
2380 skb_put(skb, sizeof(tf->u.setup_resp));
2381 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2382 tf->u.setup_resp.dialog_token = dialog_token;
2383 tf->u.setup_resp.capability =
2384 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2385
2386 ieee80211_add_srates_ie(&sdata->vif, skb);
2387 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2388 ieee80211_tdls_add_ext_capab(skb);
2389 break;
2390 case WLAN_TDLS_SETUP_CONFIRM:
2391 tf->category = WLAN_CATEGORY_TDLS;
2392 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2393
2394 skb_put(skb, sizeof(tf->u.setup_cfm));
2395 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2396 tf->u.setup_cfm.dialog_token = dialog_token;
2397 break;
2398 case WLAN_TDLS_TEARDOWN:
2399 tf->category = WLAN_CATEGORY_TDLS;
2400 tf->action_code = WLAN_TDLS_TEARDOWN;
2401
2402 skb_put(skb, sizeof(tf->u.teardown));
2403 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2404 break;
2405 case WLAN_TDLS_DISCOVERY_REQUEST:
2406 tf->category = WLAN_CATEGORY_TDLS;
2407 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2408
2409 skb_put(skb, sizeof(tf->u.discover_req));
2410 tf->u.discover_req.dialog_token = dialog_token;
2411 break;
2412 default:
2413 return -EINVAL;
2414 }
2415
2416 return 0;
2417 }
2418
2419 static int
2420 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2421 u8 *peer, u8 action_code, u8 dialog_token,
2422 u16 status_code, struct sk_buff *skb)
2423 {
2424 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2425 struct ieee80211_mgmt *mgmt;
2426
2427 mgmt = (void *)skb_put(skb, 24);
2428 memset(mgmt, 0, 24);
2429 memcpy(mgmt->da, peer, ETH_ALEN);
2430 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2431 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2432
2433 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2434 IEEE80211_STYPE_ACTION);
2435
2436 switch (action_code) {
2437 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2438 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2439 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2440 mgmt->u.action.u.tdls_discover_resp.action_code =
2441 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2442 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2443 dialog_token;
2444 mgmt->u.action.u.tdls_discover_resp.capability =
2445 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2446
2447 ieee80211_add_srates_ie(&sdata->vif, skb);
2448 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2449 ieee80211_tdls_add_ext_capab(skb);
2450 break;
2451 default:
2452 return -EINVAL;
2453 }
2454
2455 return 0;
2456 }
2457
2458 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2459 u8 *peer, u8 action_code, u8 dialog_token,
2460 u16 status_code, const u8 *extra_ies,
2461 size_t extra_ies_len)
2462 {
2463 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2464 struct ieee80211_local *local = sdata->local;
2465 struct ieee80211_tx_info *info;
2466 struct sk_buff *skb = NULL;
2467 bool send_direct;
2468 int ret;
2469
2470 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2471 return -ENOTSUPP;
2472
2473 /* make sure we are in managed mode, and associated */
2474 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2475 !sdata->u.mgd.associated)
2476 return -EINVAL;
2477
2478 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2479 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2480 #endif
2481
2482 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2483 max(sizeof(struct ieee80211_mgmt),
2484 sizeof(struct ieee80211_tdls_data)) +
2485 50 + /* supported rates */
2486 7 + /* ext capab */
2487 extra_ies_len +
2488 sizeof(struct ieee80211_tdls_lnkie));
2489 if (!skb)
2490 return -ENOMEM;
2491
2492 info = IEEE80211_SKB_CB(skb);
2493 skb_reserve(skb, local->hw.extra_tx_headroom);
2494
2495 switch (action_code) {
2496 case WLAN_TDLS_SETUP_REQUEST:
2497 case WLAN_TDLS_SETUP_RESPONSE:
2498 case WLAN_TDLS_SETUP_CONFIRM:
2499 case WLAN_TDLS_TEARDOWN:
2500 case WLAN_TDLS_DISCOVERY_REQUEST:
2501 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2502 action_code, dialog_token,
2503 status_code, skb);
2504 send_direct = false;
2505 break;
2506 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2507 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2508 dialog_token, status_code,
2509 skb);
2510 send_direct = true;
2511 break;
2512 default:
2513 ret = -ENOTSUPP;
2514 break;
2515 }
2516
2517 if (ret < 0)
2518 goto fail;
2519
2520 if (extra_ies_len)
2521 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2522
2523 /* the TDLS link IE is always added last */
2524 switch (action_code) {
2525 case WLAN_TDLS_SETUP_REQUEST:
2526 case WLAN_TDLS_SETUP_CONFIRM:
2527 case WLAN_TDLS_TEARDOWN:
2528 case WLAN_TDLS_DISCOVERY_REQUEST:
2529 /* we are the initiator */
2530 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2531 sdata->u.mgd.bssid);
2532 break;
2533 case WLAN_TDLS_SETUP_RESPONSE:
2534 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2535 /* we are the responder */
2536 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2537 sdata->u.mgd.bssid);
2538 break;
2539 default:
2540 ret = -ENOTSUPP;
2541 goto fail;
2542 }
2543
2544 if (send_direct) {
2545 ieee80211_tx_skb(sdata, skb);
2546 return 0;
2547 }
2548
2549 /*
2550 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2551 * we should default to AC_VI.
2552 */
2553 switch (action_code) {
2554 case WLAN_TDLS_SETUP_REQUEST:
2555 case WLAN_TDLS_SETUP_RESPONSE:
2556 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2557 skb->priority = 2;
2558 break;
2559 default:
2560 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2561 skb->priority = 5;
2562 break;
2563 }
2564
2565 /* disable bottom halves when entering the Tx path */
2566 local_bh_disable();
2567 ret = ieee80211_subif_start_xmit(skb, dev);
2568 local_bh_enable();
2569
2570 return ret;
2571
2572 fail:
2573 dev_kfree_skb(skb);
2574 return ret;
2575 }
2576
2577 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2578 u8 *peer, enum nl80211_tdls_operation oper)
2579 {
2580 struct sta_info *sta;
2581 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2582
2583 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2584 return -ENOTSUPP;
2585
2586 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2587 return -EINVAL;
2588
2589 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2590 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2591 #endif
2592
2593 switch (oper) {
2594 case NL80211_TDLS_ENABLE_LINK:
2595 rcu_read_lock();
2596 sta = sta_info_get(sdata, peer);
2597 if (!sta) {
2598 rcu_read_unlock();
2599 return -ENOLINK;
2600 }
2601
2602 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2603 rcu_read_unlock();
2604 break;
2605 case NL80211_TDLS_DISABLE_LINK:
2606 return sta_info_destroy_addr(sdata, peer);
2607 case NL80211_TDLS_TEARDOWN:
2608 case NL80211_TDLS_SETUP:
2609 case NL80211_TDLS_DISCOVERY_REQ:
2610 /* We don't support in-driver setup/teardown/discovery */
2611 return -ENOTSUPP;
2612 default:
2613 return -ENOTSUPP;
2614 }
2615
2616 return 0;
2617 }
2618
2619 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2620 const u8 *peer, u64 *cookie)
2621 {
2622 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2623 struct ieee80211_local *local = sdata->local;
2624 struct ieee80211_qos_hdr *nullfunc;
2625 struct sk_buff *skb;
2626 int size = sizeof(*nullfunc);
2627 __le16 fc;
2628 bool qos;
2629 struct ieee80211_tx_info *info;
2630 struct sta_info *sta;
2631
2632 rcu_read_lock();
2633 sta = sta_info_get(sdata, peer);
2634 if (sta) {
2635 qos = test_sta_flag(sta, WLAN_STA_WME);
2636 rcu_read_unlock();
2637 } else {
2638 rcu_read_unlock();
2639 return -ENOLINK;
2640 }
2641
2642 if (qos) {
2643 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2644 IEEE80211_STYPE_QOS_NULLFUNC |
2645 IEEE80211_FCTL_FROMDS);
2646 } else {
2647 size -= 2;
2648 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2649 IEEE80211_STYPE_NULLFUNC |
2650 IEEE80211_FCTL_FROMDS);
2651 }
2652
2653 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2654 if (!skb)
2655 return -ENOMEM;
2656
2657 skb->dev = dev;
2658
2659 skb_reserve(skb, local->hw.extra_tx_headroom);
2660
2661 nullfunc = (void *) skb_put(skb, size);
2662 nullfunc->frame_control = fc;
2663 nullfunc->duration_id = 0;
2664 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2665 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2666 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2667 nullfunc->seq_ctrl = 0;
2668
2669 info = IEEE80211_SKB_CB(skb);
2670
2671 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2672 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2673
2674 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2675 skb->priority = 7;
2676 if (qos)
2677 nullfunc->qos_ctrl = cpu_to_le16(7);
2678
2679 local_bh_disable();
2680 ieee80211_xmit(sdata, skb);
2681 local_bh_enable();
2682
2683 *cookie = (unsigned long) skb;
2684 return 0;
2685 }
2686
2687 static struct ieee80211_channel *
2688 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2689 {
2690 struct ieee80211_local *local = wiphy_priv(wiphy);
2691
2692 return local->oper_channel;
2693 }
2694
2695 struct cfg80211_ops mac80211_config_ops = {
2696 .add_virtual_intf = ieee80211_add_iface,
2697 .del_virtual_intf = ieee80211_del_iface,
2698 .change_virtual_intf = ieee80211_change_iface,
2699 .add_key = ieee80211_add_key,
2700 .del_key = ieee80211_del_key,
2701 .get_key = ieee80211_get_key,
2702 .set_default_key = ieee80211_config_default_key,
2703 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2704 .add_beacon = ieee80211_add_beacon,
2705 .set_beacon = ieee80211_set_beacon,
2706 .del_beacon = ieee80211_del_beacon,
2707 .add_station = ieee80211_add_station,
2708 .del_station = ieee80211_del_station,
2709 .change_station = ieee80211_change_station,
2710 .get_station = ieee80211_get_station,
2711 .dump_station = ieee80211_dump_station,
2712 .dump_survey = ieee80211_dump_survey,
2713 #ifdef CONFIG_MAC80211_MESH
2714 .add_mpath = ieee80211_add_mpath,
2715 .del_mpath = ieee80211_del_mpath,
2716 .change_mpath = ieee80211_change_mpath,
2717 .get_mpath = ieee80211_get_mpath,
2718 .dump_mpath = ieee80211_dump_mpath,
2719 .update_mesh_config = ieee80211_update_mesh_config,
2720 .get_mesh_config = ieee80211_get_mesh_config,
2721 .join_mesh = ieee80211_join_mesh,
2722 .leave_mesh = ieee80211_leave_mesh,
2723 #endif
2724 .change_bss = ieee80211_change_bss,
2725 .set_txq_params = ieee80211_set_txq_params,
2726 .set_channel = ieee80211_set_channel,
2727 .suspend = ieee80211_suspend,
2728 .resume = ieee80211_resume,
2729 .scan = ieee80211_scan,
2730 .sched_scan_start = ieee80211_sched_scan_start,
2731 .sched_scan_stop = ieee80211_sched_scan_stop,
2732 .auth = ieee80211_auth,
2733 .assoc = ieee80211_assoc,
2734 .deauth = ieee80211_deauth,
2735 .disassoc = ieee80211_disassoc,
2736 .join_ibss = ieee80211_join_ibss,
2737 .leave_ibss = ieee80211_leave_ibss,
2738 .set_wiphy_params = ieee80211_set_wiphy_params,
2739 .set_tx_power = ieee80211_set_tx_power,
2740 .get_tx_power = ieee80211_get_tx_power,
2741 .set_wds_peer = ieee80211_set_wds_peer,
2742 .rfkill_poll = ieee80211_rfkill_poll,
2743 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2744 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2745 .set_power_mgmt = ieee80211_set_power_mgmt,
2746 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2747 .remain_on_channel = ieee80211_remain_on_channel,
2748 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2749 .mgmt_tx = ieee80211_mgmt_tx,
2750 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2751 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2752 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2753 .set_antenna = ieee80211_set_antenna,
2754 .get_antenna = ieee80211_get_antenna,
2755 .set_ringparam = ieee80211_set_ringparam,
2756 .get_ringparam = ieee80211_get_ringparam,
2757 .set_rekey_data = ieee80211_set_rekey_data,
2758 .tdls_oper = ieee80211_tdls_oper,
2759 .tdls_mgmt = ieee80211_tdls_mgmt,
2760 .probe_client = ieee80211_probe_client,
2761 .get_channel = ieee80211_wiphy_get_channel,
2762 .set_noack_map = ieee80211_set_noack_map,
2763 };
Linux kernel - Deliverables
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