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[media] em28xx: Improve support for the Terratec Cinergy HTC Stick HD
[linux-2.6/btrfs-unstable.git] / net / mac80211 / cfg.c
blob677d65929780ad147a531657f30ee26f6b52ae82
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 void sta_set_rate_info_tx(struct sta_info *sta,
340 const struct ieee80211_tx_rate *rate,
341 struct rate_info *rinfo)
342 {
343 rinfo->flags = 0;
344 if (rate->flags & IEEE80211_TX_RC_MCS)
345 rinfo->flags |= RATE_INFO_FLAGS_MCS;
346 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
347 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
348 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
349 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
350 rate_idx_to_bitrate(rinfo, sta, rate->idx);
351 }
352
353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
354 {
355 struct ieee80211_sub_if_data *sdata = sta->sdata;
356 struct timespec uptime;
357
358 sinfo->generation = sdata->local->sta_generation;
359
360 sinfo->filled = STATION_INFO_INACTIVE_TIME |
361 STATION_INFO_RX_BYTES |
362 STATION_INFO_TX_BYTES |
363 STATION_INFO_RX_PACKETS |
364 STATION_INFO_TX_PACKETS |
365 STATION_INFO_TX_RETRIES |
366 STATION_INFO_TX_FAILED |
367 STATION_INFO_TX_BITRATE |
368 STATION_INFO_RX_BITRATE |
369 STATION_INFO_RX_DROP_MISC |
370 STATION_INFO_BSS_PARAM |
371 STATION_INFO_CONNECTED_TIME |
372 STATION_INFO_STA_FLAGS |
373 STATION_INFO_BEACON_LOSS_COUNT;
374
375 do_posix_clock_monotonic_gettime(&uptime);
376 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
377
378 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
379 sinfo->rx_bytes = sta->rx_bytes;
380 sinfo->tx_bytes = sta->tx_bytes;
381 sinfo->rx_packets = sta->rx_packets;
382 sinfo->tx_packets = sta->tx_packets;
383 sinfo->tx_retries = sta->tx_retry_count;
384 sinfo->tx_failed = sta->tx_retry_failed;
385 sinfo->rx_dropped_misc = sta->rx_dropped;
386 sinfo->beacon_loss_count = sta->beacon_loss_count;
387
388 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
389 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
390 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
391 sinfo->signal = (s8)sta->last_signal;
392 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
393 }
394
395 sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
396
397 sinfo->rxrate.flags = 0;
398 if (sta->last_rx_rate_flag & RX_FLAG_HT)
399 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
400 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
401 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
402 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
403 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
404 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
405
406 if (ieee80211_vif_is_mesh(&sdata->vif)) {
407 #ifdef CONFIG_MAC80211_MESH
408 sinfo->filled |= STATION_INFO_LLID |
409 STATION_INFO_PLID |
410 STATION_INFO_PLINK_STATE;
411
412 sinfo->llid = le16_to_cpu(sta->llid);
413 sinfo->plid = le16_to_cpu(sta->plid);
414 sinfo->plink_state = sta->plink_state;
415 #endif
416 }
417
418 sinfo->bss_param.flags = 0;
419 if (sdata->vif.bss_conf.use_cts_prot)
420 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
421 if (sdata->vif.bss_conf.use_short_preamble)
422 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
423 if (sdata->vif.bss_conf.use_short_slot)
424 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
425 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
426 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
427
428 sinfo->sta_flags.set = 0;
429 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
430 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
431 BIT(NL80211_STA_FLAG_WME) |
432 BIT(NL80211_STA_FLAG_MFP) |
433 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
434 BIT(NL80211_STA_FLAG_TDLS_PEER);
435 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
436 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
437 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
438 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
439 if (test_sta_flag(sta, WLAN_STA_WME))
440 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
441 if (test_sta_flag(sta, WLAN_STA_MFP))
442 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
443 if (test_sta_flag(sta, WLAN_STA_AUTH))
444 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
445 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
446 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
447 }
448
449
450 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
451 int idx, u8 *mac, struct station_info *sinfo)
452 {
453 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
454 struct sta_info *sta;
455 int ret = -ENOENT;
456
457 rcu_read_lock();
458
459 sta = sta_info_get_by_idx(sdata, idx);
460 if (sta) {
461 ret = 0;
462 memcpy(mac, sta->sta.addr, ETH_ALEN);
463 sta_set_sinfo(sta, sinfo);
464 }
465
466 rcu_read_unlock();
467
468 return ret;
469 }
470
471 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
472 int idx, struct survey_info *survey)
473 {
474 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
475
476 return drv_get_survey(local, idx, survey);
477 }
478
479 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
480 u8 *mac, struct station_info *sinfo)
481 {
482 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
483 struct sta_info *sta;
484 int ret = -ENOENT;
485
486 rcu_read_lock();
487
488 sta = sta_info_get_bss(sdata, mac);
489 if (sta) {
490 ret = 0;
491 sta_set_sinfo(sta, sinfo);
492 }
493
494 rcu_read_unlock();
495
496 return ret;
497 }
498
499 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
500 const u8 *resp, size_t resp_len)
501 {
502 struct sk_buff *new, *old;
503
504 if (!resp || !resp_len)
505 return 1;
506
507 old = rtnl_dereference(sdata->u.ap.probe_resp);
508
509 new = dev_alloc_skb(resp_len);
510 if (!new)
511 return -ENOMEM;
512
513 memcpy(skb_put(new, resp_len), resp, resp_len);
514
515 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
516 if (old) {
517 /* TODO: use call_rcu() */
518 synchronize_rcu();
519 dev_kfree_skb(old);
520 }
521
522 return 0;
523 }
524
525 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
526 struct cfg80211_beacon_data *params)
527 {
528 struct beacon_data *new, *old;
529 int new_head_len, new_tail_len;
530 int size, err;
531 u32 changed = BSS_CHANGED_BEACON;
532
533 old = rtnl_dereference(sdata->u.ap.beacon);
534
535 /* Need to have a beacon head if we don't have one yet */
536 if (!params->head && !old)
537 return -EINVAL;
538
539 /* new or old head? */
540 if (params->head)
541 new_head_len = params->head_len;
542 else
543 new_head_len = old->head_len;
544
545 /* new or old tail? */
546 if (params->tail || !old)
547 /* params->tail_len will be zero for !params->tail */
548 new_tail_len = params->tail_len;
549 else
550 new_tail_len = old->tail_len;
551
552 size = sizeof(*new) + new_head_len + new_tail_len;
553
554 new = kzalloc(size, GFP_KERNEL);
555 if (!new)
556 return -ENOMEM;
557
558 /* start filling the new info now */
559
560 /*
561 * pointers go into the block we allocated,
562 * memory is | beacon_data | head | tail |
563 */
564 new->head = ((u8 *) new) + sizeof(*new);
565 new->tail = new->head + new_head_len;
566 new->head_len = new_head_len;
567 new->tail_len = new_tail_len;
568
569 /* copy in head */
570 if (params->head)
571 memcpy(new->head, params->head, new_head_len);
572 else
573 memcpy(new->head, old->head, new_head_len);
574
575 /* copy in optional tail */
576 if (params->tail)
577 memcpy(new->tail, params->tail, new_tail_len);
578 else
579 if (old)
580 memcpy(new->tail, old->tail, new_tail_len);
581
582 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
583 params->probe_resp_len);
584 if (err < 0)
585 return err;
586 if (err == 0)
587 changed |= BSS_CHANGED_AP_PROBE_RESP;
588
589 rcu_assign_pointer(sdata->u.ap.beacon, new);
590
591 if (old)
592 kfree_rcu(old, rcu_head);
593
594 return changed;
595 }
596
597 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
598 struct cfg80211_ap_settings *params)
599 {
600 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
601 struct beacon_data *old;
602 struct ieee80211_sub_if_data *vlan;
603 u32 changed = BSS_CHANGED_BEACON_INT |
604 BSS_CHANGED_BEACON_ENABLED |
605 BSS_CHANGED_BEACON |
606 BSS_CHANGED_SSID;
607 int err;
608
609 old = rtnl_dereference(sdata->u.ap.beacon);
610 if (old)
611 return -EALREADY;
612
613 /*
614 * Apply control port protocol, this allows us to
615 * not encrypt dynamic WEP control frames.
616 */
617 sdata->control_port_protocol = params->crypto.control_port_ethertype;
618 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
619 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
620 vlan->control_port_protocol =
621 params->crypto.control_port_ethertype;
622 vlan->control_port_no_encrypt =
623 params->crypto.control_port_no_encrypt;
624 }
625
626 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
627 sdata->vif.bss_conf.dtim_period = params->dtim_period;
628
629 sdata->vif.bss_conf.ssid_len = params->ssid_len;
630 if (params->ssid_len)
631 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
632 params->ssid_len);
633 sdata->vif.bss_conf.hidden_ssid =
634 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
635
636 err = ieee80211_assign_beacon(sdata, &params->beacon);
637 if (err < 0)
638 return err;
639 changed |= err;
640
641 ieee80211_bss_info_change_notify(sdata, changed);
642
643 return 0;
644 }
645
646 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
647 struct cfg80211_beacon_data *params)
648 {
649 struct ieee80211_sub_if_data *sdata;
650 struct beacon_data *old;
651 int err;
652
653 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
654
655 old = rtnl_dereference(sdata->u.ap.beacon);
656 if (!old)
657 return -ENOENT;
658
659 err = ieee80211_assign_beacon(sdata, params);
660 if (err < 0)
661 return err;
662 ieee80211_bss_info_change_notify(sdata, err);
663 return 0;
664 }
665
666 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
667 {
668 struct ieee80211_sub_if_data *sdata;
669 struct beacon_data *old;
670
671 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
672
673 old = rtnl_dereference(sdata->u.ap.beacon);
674 if (!old)
675 return -ENOENT;
676
677 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
678
679 kfree_rcu(old, rcu_head);
680
681 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
682
683 return 0;
684 }
685
686 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
687 struct iapp_layer2_update {
688 u8 da[ETH_ALEN]; /* broadcast */
689 u8 sa[ETH_ALEN]; /* STA addr */
690 __be16 len; /* 6 */
691 u8 dsap; /* 0 */
692 u8 ssap; /* 0 */
693 u8 control;
694 u8 xid_info[3];
695 } __packed;
696
697 static void ieee80211_send_layer2_update(struct sta_info *sta)
698 {
699 struct iapp_layer2_update *msg;
700 struct sk_buff *skb;
701
702 /* Send Level 2 Update Frame to update forwarding tables in layer 2
703 * bridge devices */
704
705 skb = dev_alloc_skb(sizeof(*msg));
706 if (!skb)
707 return;
708 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
709
710 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
711 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
712
713 memset(msg->da, 0xff, ETH_ALEN);
714 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
715 msg->len = htons(6);
716 msg->dsap = 0;
717 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
718 msg->control = 0xaf; /* XID response lsb.1111F101.
719 * F=0 (no poll command; unsolicited frame) */
720 msg->xid_info[0] = 0x81; /* XID format identifier */
721 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
722 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
723
724 skb->dev = sta->sdata->dev;
725 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
726 memset(skb->cb, 0, sizeof(skb->cb));
727 netif_rx_ni(skb);
728 }
729
730 static int sta_apply_parameters(struct ieee80211_local *local,
731 struct sta_info *sta,
732 struct station_parameters *params)
733 {
734 int ret = 0;
735 u32 rates;
736 int i, j;
737 struct ieee80211_supported_band *sband;
738 struct ieee80211_sub_if_data *sdata = sta->sdata;
739 u32 mask, set;
740
741 sband = local->hw.wiphy->bands[local->oper_channel->band];
742
743 mask = params->sta_flags_mask;
744 set = params->sta_flags_set;
745
746 /*
747 * In mesh mode, we can clear AUTHENTICATED flag but must
748 * also make ASSOCIATED follow appropriately for the driver
749 * API. See also below, after AUTHORIZED changes.
750 */
751 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
752 /* cfg80211 should not allow this in non-mesh modes */
753 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
754 return -EINVAL;
755
756 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
757 !test_sta_flag(sta, WLAN_STA_AUTH)) {
758 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
759 if (ret)
760 return ret;
761 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
762 if (ret)
763 return ret;
764 }
765 }
766
767 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
768 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
769 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
770 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
771 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
772 if (ret)
773 return ret;
774 }
775
776 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
777 /* cfg80211 should not allow this in non-mesh modes */
778 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
779 return -EINVAL;
780
781 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
782 test_sta_flag(sta, WLAN_STA_AUTH)) {
783 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
784 if (ret)
785 return ret;
786 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
787 if (ret)
788 return ret;
789 }
790 }
791
792
793 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
794 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
795 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
796 else
797 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
798 }
799
800 if (mask & BIT(NL80211_STA_FLAG_WME)) {
801 if (set & BIT(NL80211_STA_FLAG_WME)) {
802 set_sta_flag(sta, WLAN_STA_WME);
803 sta->sta.wme = true;
804 } else {
805 clear_sta_flag(sta, WLAN_STA_WME);
806 sta->sta.wme = false;
807 }
808 }
809
810 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
811 if (set & BIT(NL80211_STA_FLAG_MFP))
812 set_sta_flag(sta, WLAN_STA_MFP);
813 else
814 clear_sta_flag(sta, WLAN_STA_MFP);
815 }
816
817 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
818 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
819 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
820 else
821 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
822 }
823
824 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
825 sta->sta.uapsd_queues = params->uapsd_queues;
826 sta->sta.max_sp = params->max_sp;
827 }
828
829 /*
830 * cfg80211 validates this (1-2007) and allows setting the AID
831 * only when creating a new station entry
832 */
833 if (params->aid)
834 sta->sta.aid = params->aid;
835
836 /*
837 * FIXME: updating the following information is racy when this
838 * function is called from ieee80211_change_station().
839 * However, all this information should be static so
840 * maybe we should just reject attemps to change it.
841 */
842
843 if (params->listen_interval >= 0)
844 sta->listen_interval = params->listen_interval;
845
846 if (params->supported_rates) {
847 rates = 0;
848
849 for (i = 0; i < params->supported_rates_len; i++) {
850 int rate = (params->supported_rates[i] & 0x7f) * 5;
851 for (j = 0; j < sband->n_bitrates; j++) {
852 if (sband->bitrates[j].bitrate == rate)
853 rates |= BIT(j);
854 }
855 }
856 sta->sta.supp_rates[local->oper_channel->band] = rates;
857 }
858
859 if (params->ht_capa)
860 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
861 params->ht_capa,
862 &sta->sta.ht_cap);
863
864 if (ieee80211_vif_is_mesh(&sdata->vif)) {
865 #ifdef CONFIG_MAC80211_MESH
866 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
867 switch (params->plink_state) {
868 case NL80211_PLINK_LISTEN:
869 case NL80211_PLINK_ESTAB:
870 case NL80211_PLINK_BLOCKED:
871 sta->plink_state = params->plink_state;
872 break;
873 default:
874 /* nothing */
875 break;
876 }
877 else
878 switch (params->plink_action) {
879 case PLINK_ACTION_OPEN:
880 mesh_plink_open(sta);
881 break;
882 case PLINK_ACTION_BLOCK:
883 mesh_plink_block(sta);
884 break;
885 }
886 #endif
887 }
888
889 return 0;
890 }
891
892 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
893 u8 *mac, struct station_parameters *params)
894 {
895 struct ieee80211_local *local = wiphy_priv(wiphy);
896 struct sta_info *sta;
897 struct ieee80211_sub_if_data *sdata;
898 int err;
899 int layer2_update;
900
901 if (params->vlan) {
902 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
903
904 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
905 sdata->vif.type != NL80211_IFTYPE_AP)
906 return -EINVAL;
907 } else
908 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
909
910 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
911 return -EINVAL;
912
913 if (is_multicast_ether_addr(mac))
914 return -EINVAL;
915
916 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
917 if (!sta)
918 return -ENOMEM;
919
920 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
921 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
922
923 err = sta_apply_parameters(local, sta, params);
924 if (err) {
925 sta_info_free(local, sta);
926 return err;
927 }
928
929 /*
930 * for TDLS, rate control should be initialized only when supported
931 * rates are known.
932 */
933 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
934 rate_control_rate_init(sta);
935
936 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
937 sdata->vif.type == NL80211_IFTYPE_AP;
938
939 err = sta_info_insert_rcu(sta);
940 if (err) {
941 rcu_read_unlock();
942 return err;
943 }
944
945 if (layer2_update)
946 ieee80211_send_layer2_update(sta);
947
948 rcu_read_unlock();
949
950 return 0;
951 }
952
953 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
954 u8 *mac)
955 {
956 struct ieee80211_local *local = wiphy_priv(wiphy);
957 struct ieee80211_sub_if_data *sdata;
958
959 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
960
961 if (mac)
962 return sta_info_destroy_addr_bss(sdata, mac);
963
964 sta_info_flush(local, sdata);
965 return 0;
966 }
967
968 static int ieee80211_change_station(struct wiphy *wiphy,
969 struct net_device *dev,
970 u8 *mac,
971 struct station_parameters *params)
972 {
973 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
974 struct ieee80211_local *local = wiphy_priv(wiphy);
975 struct sta_info *sta;
976 struct ieee80211_sub_if_data *vlansdata;
977 int err;
978
979 mutex_lock(&local->sta_mtx);
980
981 sta = sta_info_get_bss(sdata, mac);
982 if (!sta) {
983 mutex_unlock(&local->sta_mtx);
984 return -ENOENT;
985 }
986
987 /* in station mode, supported rates are only valid with TDLS */
988 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
989 params->supported_rates &&
990 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
991 mutex_unlock(&local->sta_mtx);
992 return -EINVAL;
993 }
994
995 if (params->vlan && params->vlan != sta->sdata->dev) {
996 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
997
998 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
999 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1000 mutex_unlock(&local->sta_mtx);
1001 return -EINVAL;
1002 }
1003
1004 if (params->vlan->ieee80211_ptr->use_4addr) {
1005 if (vlansdata->u.vlan.sta) {
1006 mutex_unlock(&local->sta_mtx);
1007 return -EBUSY;
1008 }
1009
1010 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1011 }
1012
1013 sta->sdata = vlansdata;
1014 ieee80211_send_layer2_update(sta);
1015 }
1016
1017 err = sta_apply_parameters(local, sta, params);
1018 if (err) {
1019 mutex_unlock(&local->sta_mtx);
1020 return err;
1021 }
1022
1023 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1024 rate_control_rate_init(sta);
1025
1026 mutex_unlock(&local->sta_mtx);
1027
1028 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1029 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1030 ieee80211_recalc_ps(local, -1);
1031
1032 return 0;
1033 }
1034
1035 #ifdef CONFIG_MAC80211_MESH
1036 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1037 u8 *dst, u8 *next_hop)
1038 {
1039 struct ieee80211_sub_if_data *sdata;
1040 struct mesh_path *mpath;
1041 struct sta_info *sta;
1042 int err;
1043
1044 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1045
1046 rcu_read_lock();
1047 sta = sta_info_get(sdata, next_hop);
1048 if (!sta) {
1049 rcu_read_unlock();
1050 return -ENOENT;
1051 }
1052
1053 err = mesh_path_add(dst, sdata);
1054 if (err) {
1055 rcu_read_unlock();
1056 return err;
1057 }
1058
1059 mpath = mesh_path_lookup(dst, sdata);
1060 if (!mpath) {
1061 rcu_read_unlock();
1062 return -ENXIO;
1063 }
1064 mesh_path_fix_nexthop(mpath, sta);
1065
1066 rcu_read_unlock();
1067 return 0;
1068 }
1069
1070 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1071 u8 *dst)
1072 {
1073 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1074
1075 if (dst)
1076 return mesh_path_del(dst, sdata);
1077
1078 mesh_path_flush_by_iface(sdata);
1079 return 0;
1080 }
1081
1082 static int ieee80211_change_mpath(struct wiphy *wiphy,
1083 struct net_device *dev,
1084 u8 *dst, u8 *next_hop)
1085 {
1086 struct ieee80211_sub_if_data *sdata;
1087 struct mesh_path *mpath;
1088 struct sta_info *sta;
1089
1090 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1091
1092 rcu_read_lock();
1093
1094 sta = sta_info_get(sdata, next_hop);
1095 if (!sta) {
1096 rcu_read_unlock();
1097 return -ENOENT;
1098 }
1099
1100 mpath = mesh_path_lookup(dst, sdata);
1101 if (!mpath) {
1102 rcu_read_unlock();
1103 return -ENOENT;
1104 }
1105
1106 mesh_path_fix_nexthop(mpath, sta);
1107
1108 rcu_read_unlock();
1109 return 0;
1110 }
1111
1112 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1113 struct mpath_info *pinfo)
1114 {
1115 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1116
1117 if (next_hop_sta)
1118 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1119 else
1120 memset(next_hop, 0, ETH_ALEN);
1121
1122 pinfo->generation = mesh_paths_generation;
1123
1124 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1125 MPATH_INFO_SN |
1126 MPATH_INFO_METRIC |
1127 MPATH_INFO_EXPTIME |
1128 MPATH_INFO_DISCOVERY_TIMEOUT |
1129 MPATH_INFO_DISCOVERY_RETRIES |
1130 MPATH_INFO_FLAGS;
1131
1132 pinfo->frame_qlen = mpath->frame_queue.qlen;
1133 pinfo->sn = mpath->sn;
1134 pinfo->metric = mpath->metric;
1135 if (time_before(jiffies, mpath->exp_time))
1136 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1137 pinfo->discovery_timeout =
1138 jiffies_to_msecs(mpath->discovery_timeout);
1139 pinfo->discovery_retries = mpath->discovery_retries;
1140 pinfo->flags = 0;
1141 if (mpath->flags & MESH_PATH_ACTIVE)
1142 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1143 if (mpath->flags & MESH_PATH_RESOLVING)
1144 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1145 if (mpath->flags & MESH_PATH_SN_VALID)
1146 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1147 if (mpath->flags & MESH_PATH_FIXED)
1148 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1149 if (mpath->flags & MESH_PATH_RESOLVING)
1150 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1151
1152 pinfo->flags = mpath->flags;
1153 }
1154
1155 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1156 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1157
1158 {
1159 struct ieee80211_sub_if_data *sdata;
1160 struct mesh_path *mpath;
1161
1162 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1163
1164 rcu_read_lock();
1165 mpath = mesh_path_lookup(dst, sdata);
1166 if (!mpath) {
1167 rcu_read_unlock();
1168 return -ENOENT;
1169 }
1170 memcpy(dst, mpath->dst, ETH_ALEN);
1171 mpath_set_pinfo(mpath, next_hop, pinfo);
1172 rcu_read_unlock();
1173 return 0;
1174 }
1175
1176 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1177 int idx, u8 *dst, u8 *next_hop,
1178 struct mpath_info *pinfo)
1179 {
1180 struct ieee80211_sub_if_data *sdata;
1181 struct mesh_path *mpath;
1182
1183 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1184
1185 rcu_read_lock();
1186 mpath = mesh_path_lookup_by_idx(idx, sdata);
1187 if (!mpath) {
1188 rcu_read_unlock();
1189 return -ENOENT;
1190 }
1191 memcpy(dst, mpath->dst, ETH_ALEN);
1192 mpath_set_pinfo(mpath, next_hop, pinfo);
1193 rcu_read_unlock();
1194 return 0;
1195 }
1196
1197 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1198 struct net_device *dev,
1199 struct mesh_config *conf)
1200 {
1201 struct ieee80211_sub_if_data *sdata;
1202 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1203
1204 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1205 return 0;
1206 }
1207
1208 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1209 {
1210 return (mask >> (parm-1)) & 0x1;
1211 }
1212
1213 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1214 const struct mesh_setup *setup)
1215 {
1216 u8 *new_ie;
1217 const u8 *old_ie;
1218 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1219 struct ieee80211_sub_if_data, u.mesh);
1220
1221 /* allocate information elements */
1222 new_ie = NULL;
1223 old_ie = ifmsh->ie;
1224
1225 if (setup->ie_len) {
1226 new_ie = kmemdup(setup->ie, setup->ie_len,
1227 GFP_KERNEL);
1228 if (!new_ie)
1229 return -ENOMEM;
1230 }
1231 ifmsh->ie_len = setup->ie_len;
1232 ifmsh->ie = new_ie;
1233 kfree(old_ie);
1234
1235 /* now copy the rest of the setup parameters */
1236 ifmsh->mesh_id_len = setup->mesh_id_len;
1237 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1238 ifmsh->mesh_pp_id = setup->path_sel_proto;
1239 ifmsh->mesh_pm_id = setup->path_metric;
1240 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1241 if (setup->is_authenticated)
1242 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1243 if (setup->is_secure)
1244 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1245
1246 /* mcast rate setting in Mesh Node */
1247 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1248 sizeof(setup->mcast_rate));
1249
1250 return 0;
1251 }
1252
1253 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1254 struct net_device *dev, u32 mask,
1255 const struct mesh_config *nconf)
1256 {
1257 struct mesh_config *conf;
1258 struct ieee80211_sub_if_data *sdata;
1259 struct ieee80211_if_mesh *ifmsh;
1260
1261 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1262 ifmsh = &sdata->u.mesh;
1263
1264 /* Set the config options which we are interested in setting */
1265 conf = &(sdata->u.mesh.mshcfg);
1266 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1267 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1268 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1269 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1270 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1271 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1272 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1273 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1274 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1275 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1276 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1277 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1278 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1279 conf->dot11MeshTTL = nconf->element_ttl;
1280 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1281 conf->auto_open_plinks = nconf->auto_open_plinks;
1282 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1283 conf->dot11MeshHWMPmaxPREQretries =
1284 nconf->dot11MeshHWMPmaxPREQretries;
1285 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1286 conf->path_refresh_time = nconf->path_refresh_time;
1287 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1288 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1289 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1290 conf->dot11MeshHWMPactivePathTimeout =
1291 nconf->dot11MeshHWMPactivePathTimeout;
1292 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1293 conf->dot11MeshHWMPpreqMinInterval =
1294 nconf->dot11MeshHWMPpreqMinInterval;
1295 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1296 conf->dot11MeshHWMPperrMinInterval =
1297 nconf->dot11MeshHWMPperrMinInterval;
1298 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1299 mask))
1300 conf->dot11MeshHWMPnetDiameterTraversalTime =
1301 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1302 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1303 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1304 ieee80211_mesh_root_setup(ifmsh);
1305 }
1306 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1307 /* our current gate announcement implementation rides on root
1308 * announcements, so require this ifmsh to also be a root node
1309 * */
1310 if (nconf->dot11MeshGateAnnouncementProtocol &&
1311 !conf->dot11MeshHWMPRootMode) {
1312 conf->dot11MeshHWMPRootMode = 1;
1313 ieee80211_mesh_root_setup(ifmsh);
1314 }
1315 conf->dot11MeshGateAnnouncementProtocol =
1316 nconf->dot11MeshGateAnnouncementProtocol;
1317 }
1318 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1319 conf->dot11MeshHWMPRannInterval =
1320 nconf->dot11MeshHWMPRannInterval;
1321 }
1322 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1323 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1324 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1325 /* our RSSI threshold implementation is supported only for
1326 * devices that report signal in dBm.
1327 */
1328 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1329 return -ENOTSUPP;
1330 conf->rssi_threshold = nconf->rssi_threshold;
1331 }
1332 return 0;
1333 }
1334
1335 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1336 const struct mesh_config *conf,
1337 const struct mesh_setup *setup)
1338 {
1339 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1340 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1341 int err;
1342
1343 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1344 err = copy_mesh_setup(ifmsh, setup);
1345 if (err)
1346 return err;
1347 ieee80211_start_mesh(sdata);
1348
1349 return 0;
1350 }
1351
1352 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1353 {
1354 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1355
1356 ieee80211_stop_mesh(sdata);
1357
1358 return 0;
1359 }
1360 #endif
1361
1362 static int ieee80211_change_bss(struct wiphy *wiphy,
1363 struct net_device *dev,
1364 struct bss_parameters *params)
1365 {
1366 struct ieee80211_sub_if_data *sdata;
1367 u32 changed = 0;
1368
1369 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1370
1371 if (params->use_cts_prot >= 0) {
1372 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1373 changed |= BSS_CHANGED_ERP_CTS_PROT;
1374 }
1375 if (params->use_short_preamble >= 0) {
1376 sdata->vif.bss_conf.use_short_preamble =
1377 params->use_short_preamble;
1378 changed |= BSS_CHANGED_ERP_PREAMBLE;
1379 }
1380
1381 if (!sdata->vif.bss_conf.use_short_slot &&
1382 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1383 sdata->vif.bss_conf.use_short_slot = true;
1384 changed |= BSS_CHANGED_ERP_SLOT;
1385 }
1386
1387 if (params->use_short_slot_time >= 0) {
1388 sdata->vif.bss_conf.use_short_slot =
1389 params->use_short_slot_time;
1390 changed |= BSS_CHANGED_ERP_SLOT;
1391 }
1392
1393 if (params->basic_rates) {
1394 int i, j;
1395 u32 rates = 0;
1396 struct ieee80211_local *local = wiphy_priv(wiphy);
1397 struct ieee80211_supported_band *sband =
1398 wiphy->bands[local->oper_channel->band];
1399
1400 for (i = 0; i < params->basic_rates_len; i++) {
1401 int rate = (params->basic_rates[i] & 0x7f) * 5;
1402 for (j = 0; j < sband->n_bitrates; j++) {
1403 if (sband->bitrates[j].bitrate == rate)
1404 rates |= BIT(j);
1405 }
1406 }
1407 sdata->vif.bss_conf.basic_rates = rates;
1408 changed |= BSS_CHANGED_BASIC_RATES;
1409 }
1410
1411 if (params->ap_isolate >= 0) {
1412 if (params->ap_isolate)
1413 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1414 else
1415 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1416 }
1417
1418 if (params->ht_opmode >= 0) {
1419 sdata->vif.bss_conf.ht_operation_mode =
1420 (u16) params->ht_opmode;
1421 changed |= BSS_CHANGED_HT;
1422 }
1423
1424 ieee80211_bss_info_change_notify(sdata, changed);
1425
1426 return 0;
1427 }
1428
1429 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1430 struct net_device *dev,
1431 struct ieee80211_txq_params *params)
1432 {
1433 struct ieee80211_local *local = wiphy_priv(wiphy);
1434 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1435 struct ieee80211_tx_queue_params p;
1436
1437 if (!local->ops->conf_tx)
1438 return -EOPNOTSUPP;
1439
1440 memset(&p, 0, sizeof(p));
1441 p.aifs = params->aifs;
1442 p.cw_max = params->cwmax;
1443 p.cw_min = params->cwmin;
1444 p.txop = params->txop;
1445
1446 /*
1447 * Setting tx queue params disables u-apsd because it's only
1448 * called in master mode.
1449 */
1450 p.uapsd = false;
1451
1452 if (params->queue >= local->hw.queues)
1453 return -EINVAL;
1454
1455 sdata->tx_conf[params->queue] = p;
1456 if (drv_conf_tx(local, sdata, params->queue, &p)) {
1457 wiphy_debug(local->hw.wiphy,
1458 "failed to set TX queue parameters for queue %d\n",
1459 params->queue);
1460 return -EINVAL;
1461 }
1462
1463 return 0;
1464 }
1465
1466 static int ieee80211_set_channel(struct wiphy *wiphy,
1467 struct net_device *netdev,
1468 struct ieee80211_channel *chan,
1469 enum nl80211_channel_type channel_type)
1470 {
1471 struct ieee80211_local *local = wiphy_priv(wiphy);
1472 struct ieee80211_sub_if_data *sdata = NULL;
1473 struct ieee80211_channel *old_oper;
1474 enum nl80211_channel_type old_oper_type;
1475 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1476
1477 if (netdev)
1478 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1479
1480 switch (ieee80211_get_channel_mode(local, NULL)) {
1481 case CHAN_MODE_HOPPING:
1482 return -EBUSY;
1483 case CHAN_MODE_FIXED:
1484 if (local->oper_channel != chan)
1485 return -EBUSY;
1486 if (!sdata && local->_oper_channel_type == channel_type)
1487 return 0;
1488 break;
1489 case CHAN_MODE_UNDEFINED:
1490 break;
1491 }
1492
1493 if (sdata)
1494 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1495 old_oper_type = local->_oper_channel_type;
1496
1497 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1498 return -EBUSY;
1499
1500 old_oper = local->oper_channel;
1501 local->oper_channel = chan;
1502
1503 /* Update driver if changes were actually made. */
1504 if ((old_oper != local->oper_channel) ||
1505 (old_oper_type != local->_oper_channel_type))
1506 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1507
1508 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1509 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1510 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1511
1512 return 0;
1513 }
1514
1515 #ifdef CONFIG_PM
1516 static int ieee80211_suspend(struct wiphy *wiphy,
1517 struct cfg80211_wowlan *wowlan)
1518 {
1519 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1520 }
1521
1522 static int ieee80211_resume(struct wiphy *wiphy)
1523 {
1524 return __ieee80211_resume(wiphy_priv(wiphy));
1525 }
1526 #else
1527 #define ieee80211_suspend NULL
1528 #define ieee80211_resume NULL
1529 #endif
1530
1531 static int ieee80211_scan(struct wiphy *wiphy,
1532 struct net_device *dev,
1533 struct cfg80211_scan_request *req)
1534 {
1535 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1536
1537 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1538 case NL80211_IFTYPE_STATION:
1539 case NL80211_IFTYPE_ADHOC:
1540 case NL80211_IFTYPE_MESH_POINT:
1541 case NL80211_IFTYPE_P2P_CLIENT:
1542 break;
1543 case NL80211_IFTYPE_P2P_GO:
1544 if (sdata->local->ops->hw_scan)
1545 break;
1546 /*
1547 * FIXME: implement NoA while scanning in software,
1548 * for now fall through to allow scanning only when
1549 * beaconing hasn't been configured yet
1550 */
1551 case NL80211_IFTYPE_AP:
1552 if (sdata->u.ap.beacon)
1553 return -EOPNOTSUPP;
1554 break;
1555 default:
1556 return -EOPNOTSUPP;
1557 }
1558
1559 return ieee80211_request_scan(sdata, req);
1560 }
1561
1562 static int
1563 ieee80211_sched_scan_start(struct wiphy *wiphy,
1564 struct net_device *dev,
1565 struct cfg80211_sched_scan_request *req)
1566 {
1567 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1568
1569 if (!sdata->local->ops->sched_scan_start)
1570 return -EOPNOTSUPP;
1571
1572 return ieee80211_request_sched_scan_start(sdata, req);
1573 }
1574
1575 static int
1576 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1577 {
1578 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1579
1580 if (!sdata->local->ops->sched_scan_stop)
1581 return -EOPNOTSUPP;
1582
1583 return ieee80211_request_sched_scan_stop(sdata);
1584 }
1585
1586 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1587 struct cfg80211_auth_request *req)
1588 {
1589 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1590 }
1591
1592 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1593 struct cfg80211_assoc_request *req)
1594 {
1595 struct ieee80211_local *local = wiphy_priv(wiphy);
1596 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1597
1598 switch (ieee80211_get_channel_mode(local, sdata)) {
1599 case CHAN_MODE_HOPPING:
1600 return -EBUSY;
1601 case CHAN_MODE_FIXED:
1602 if (local->oper_channel == req->bss->channel)
1603 break;
1604 return -EBUSY;
1605 case CHAN_MODE_UNDEFINED:
1606 break;
1607 }
1608
1609 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1610 }
1611
1612 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1613 struct cfg80211_deauth_request *req)
1614 {
1615 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1616 }
1617
1618 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1619 struct cfg80211_disassoc_request *req)
1620 {
1621 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1622 }
1623
1624 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1625 struct cfg80211_ibss_params *params)
1626 {
1627 struct ieee80211_local *local = wiphy_priv(wiphy);
1628 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1629
1630 switch (ieee80211_get_channel_mode(local, sdata)) {
1631 case CHAN_MODE_HOPPING:
1632 return -EBUSY;
1633 case CHAN_MODE_FIXED:
1634 if (!params->channel_fixed)
1635 return -EBUSY;
1636 if (local->oper_channel == params->channel)
1637 break;
1638 return -EBUSY;
1639 case CHAN_MODE_UNDEFINED:
1640 break;
1641 }
1642
1643 return ieee80211_ibss_join(sdata, params);
1644 }
1645
1646 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1647 {
1648 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1649
1650 return ieee80211_ibss_leave(sdata);
1651 }
1652
1653 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1654 {
1655 struct ieee80211_local *local = wiphy_priv(wiphy);
1656 int err;
1657
1658 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1659 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1660
1661 if (err)
1662 return err;
1663 }
1664
1665 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1666 err = drv_set_coverage_class(local, wiphy->coverage_class);
1667
1668 if (err)
1669 return err;
1670 }
1671
1672 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1673 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1674
1675 if (err)
1676 return err;
1677 }
1678
1679 if (changed & WIPHY_PARAM_RETRY_SHORT)
1680 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1681 if (changed & WIPHY_PARAM_RETRY_LONG)
1682 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1683 if (changed &
1684 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1685 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1686
1687 return 0;
1688 }
1689
1690 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1691 enum nl80211_tx_power_setting type, int mbm)
1692 {
1693 struct ieee80211_local *local = wiphy_priv(wiphy);
1694 struct ieee80211_channel *chan = local->hw.conf.channel;
1695 u32 changes = 0;
1696
1697 switch (type) {
1698 case NL80211_TX_POWER_AUTOMATIC:
1699 local->user_power_level = -1;
1700 break;
1701 case NL80211_TX_POWER_LIMITED:
1702 if (mbm < 0 || (mbm % 100))
1703 return -EOPNOTSUPP;
1704 local->user_power_level = MBM_TO_DBM(mbm);
1705 break;
1706 case NL80211_TX_POWER_FIXED:
1707 if (mbm < 0 || (mbm % 100))
1708 return -EOPNOTSUPP;
1709 /* TODO: move to cfg80211 when it knows the channel */
1710 if (MBM_TO_DBM(mbm) > chan->max_power)
1711 return -EINVAL;
1712 local->user_power_level = MBM_TO_DBM(mbm);
1713 break;
1714 }
1715
1716 ieee80211_hw_config(local, changes);
1717
1718 return 0;
1719 }
1720
1721 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1722 {
1723 struct ieee80211_local *local = wiphy_priv(wiphy);
1724
1725 *dbm = local->hw.conf.power_level;
1726
1727 return 0;
1728 }
1729
1730 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1731 const u8 *addr)
1732 {
1733 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1734
1735 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1736
1737 return 0;
1738 }
1739
1740 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1741 {
1742 struct ieee80211_local *local = wiphy_priv(wiphy);
1743
1744 drv_rfkill_poll(local);
1745 }
1746
1747 #ifdef CONFIG_NL80211_TESTMODE
1748 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1749 {
1750 struct ieee80211_local *local = wiphy_priv(wiphy);
1751
1752 if (!local->ops->testmode_cmd)
1753 return -EOPNOTSUPP;
1754
1755 return local->ops->testmode_cmd(&local->hw, data, len);
1756 }
1757
1758 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1759 struct sk_buff *skb,
1760 struct netlink_callback *cb,
1761 void *data, int len)
1762 {
1763 struct ieee80211_local *local = wiphy_priv(wiphy);
1764
1765 if (!local->ops->testmode_dump)
1766 return -EOPNOTSUPP;
1767
1768 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1769 }
1770 #endif
1771
1772 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1773 enum ieee80211_smps_mode smps_mode)
1774 {
1775 const u8 *ap;
1776 enum ieee80211_smps_mode old_req;
1777 int err;
1778
1779 lockdep_assert_held(&sdata->u.mgd.mtx);
1780
1781 old_req = sdata->u.mgd.req_smps;
1782 sdata->u.mgd.req_smps = smps_mode;
1783
1784 if (old_req == smps_mode &&
1785 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1786 return 0;
1787
1788 /*
1789 * If not associated, or current association is not an HT
1790 * association, there's no need to send an action frame.
1791 */
1792 if (!sdata->u.mgd.associated ||
1793 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1794 mutex_lock(&sdata->local->iflist_mtx);
1795 ieee80211_recalc_smps(sdata->local);
1796 mutex_unlock(&sdata->local->iflist_mtx);
1797 return 0;
1798 }
1799
1800 ap = sdata->u.mgd.associated->bssid;
1801
1802 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1803 if (sdata->u.mgd.powersave)
1804 smps_mode = IEEE80211_SMPS_DYNAMIC;
1805 else
1806 smps_mode = IEEE80211_SMPS_OFF;
1807 }
1808
1809 /* send SM PS frame to AP */
1810 err = ieee80211_send_smps_action(sdata, smps_mode,
1811 ap, ap);
1812 if (err)
1813 sdata->u.mgd.req_smps = old_req;
1814
1815 return err;
1816 }
1817
1818 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1819 bool enabled, int timeout)
1820 {
1821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1822 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1823
1824 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1825 return -EOPNOTSUPP;
1826
1827 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1828 return -EOPNOTSUPP;
1829
1830 if (enabled == sdata->u.mgd.powersave &&
1831 timeout == local->dynamic_ps_forced_timeout)
1832 return 0;
1833
1834 sdata->u.mgd.powersave = enabled;
1835 local->dynamic_ps_forced_timeout = timeout;
1836
1837 /* no change, but if automatic follow powersave */
1838 mutex_lock(&sdata->u.mgd.mtx);
1839 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1840 mutex_unlock(&sdata->u.mgd.mtx);
1841
1842 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1843 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1844
1845 ieee80211_recalc_ps(local, -1);
1846
1847 return 0;
1848 }
1849
1850 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1851 struct net_device *dev,
1852 s32 rssi_thold, u32 rssi_hyst)
1853 {
1854 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1855 struct ieee80211_vif *vif = &sdata->vif;
1856 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1857
1858 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1859 rssi_hyst == bss_conf->cqm_rssi_hyst)
1860 return 0;
1861
1862 bss_conf->cqm_rssi_thold = rssi_thold;
1863 bss_conf->cqm_rssi_hyst = rssi_hyst;
1864
1865 /* tell the driver upon association, unless already associated */
1866 if (sdata->u.mgd.associated &&
1867 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1868 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1869
1870 return 0;
1871 }
1872
1873 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1874 struct net_device *dev,
1875 const u8 *addr,
1876 const struct cfg80211_bitrate_mask *mask)
1877 {
1878 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1879 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1880 int i, ret;
1881
1882 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1883 ret = drv_set_bitrate_mask(local, sdata, mask);
1884 if (ret)
1885 return ret;
1886 }
1887
1888 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1889 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1890 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1891 sizeof(mask->control[i].mcs));
1892 }
1893
1894 return 0;
1895 }
1896
1897 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1898 struct net_device *dev,
1899 struct ieee80211_channel *chan,
1900 enum nl80211_channel_type chantype,
1901 unsigned int duration, u64 *cookie)
1902 {
1903 int ret;
1904 u32 random_cookie;
1905
1906 lockdep_assert_held(&local->mtx);
1907
1908 if (local->hw_roc_cookie)
1909 return -EBUSY;
1910 /* must be nonzero */
1911 random_cookie = random32() | 1;
1912
1913 *cookie = random_cookie;
1914 local->hw_roc_dev = dev;
1915 local->hw_roc_cookie = random_cookie;
1916 local->hw_roc_channel = chan;
1917 local->hw_roc_channel_type = chantype;
1918 local->hw_roc_duration = duration;
1919 ret = drv_remain_on_channel(local, chan, chantype, duration);
1920 if (ret) {
1921 local->hw_roc_channel = NULL;
1922 local->hw_roc_cookie = 0;
1923 }
1924
1925 return ret;
1926 }
1927
1928 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1929 struct net_device *dev,
1930 struct ieee80211_channel *chan,
1931 enum nl80211_channel_type channel_type,
1932 unsigned int duration,
1933 u64 *cookie)
1934 {
1935 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1936 struct ieee80211_local *local = sdata->local;
1937
1938 if (local->ops->remain_on_channel) {
1939 int ret;
1940
1941 mutex_lock(&local->mtx);
1942 ret = ieee80211_remain_on_channel_hw(local, dev,
1943 chan, channel_type,
1944 duration, cookie);
1945 local->hw_roc_for_tx = false;
1946 mutex_unlock(&local->mtx);
1947
1948 return ret;
1949 }
1950
1951 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1952 duration, cookie);
1953 }
1954
1955 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1956 u64 cookie)
1957 {
1958 int ret;
1959
1960 lockdep_assert_held(&local->mtx);
1961
1962 if (local->hw_roc_cookie != cookie)
1963 return -ENOENT;
1964
1965 ret = drv_cancel_remain_on_channel(local);
1966 if (ret)
1967 return ret;
1968
1969 local->hw_roc_cookie = 0;
1970 local->hw_roc_channel = NULL;
1971
1972 ieee80211_recalc_idle(local);
1973
1974 return 0;
1975 }
1976
1977 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1978 struct net_device *dev,
1979 u64 cookie)
1980 {
1981 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982 struct ieee80211_local *local = sdata->local;
1983
1984 if (local->ops->cancel_remain_on_channel) {
1985 int ret;
1986
1987 mutex_lock(&local->mtx);
1988 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1989 mutex_unlock(&local->mtx);
1990
1991 return ret;
1992 }
1993
1994 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1995 }
1996
1997 static enum work_done_result
1998 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1999 {
2000 /*
2001 * Use the data embedded in the work struct for reporting
2002 * here so if the driver mangled the SKB before dropping
2003 * it (which is the only way we really should get here)
2004 * then we don't report mangled data.
2005 *
2006 * If there was no wait time, then by the time we get here
2007 * the driver will likely not have reported the status yet,
2008 * so in that case userspace will have to deal with it.
2009 */
2010
2011 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2012 cfg80211_mgmt_tx_status(wk->sdata->dev,
2013 (unsigned long) wk->offchan_tx.frame,
2014 wk->data, wk->data_len, false, GFP_KERNEL);
2015
2016 return WORK_DONE_DESTROY;
2017 }
2018
2019 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2020 struct ieee80211_channel *chan, bool offchan,
2021 enum nl80211_channel_type channel_type,
2022 bool channel_type_valid, unsigned int wait,
2023 const u8 *buf, size_t len, bool no_cck,
2024 bool dont_wait_for_ack, u64 *cookie)
2025 {
2026 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2027 struct ieee80211_local *local = sdata->local;
2028 struct sk_buff *skb;
2029 struct sta_info *sta;
2030 struct ieee80211_work *wk;
2031 const struct ieee80211_mgmt *mgmt = (void *)buf;
2032 u32 flags;
2033 bool is_offchan = false;
2034
2035 if (dont_wait_for_ack)
2036 flags = IEEE80211_TX_CTL_NO_ACK;
2037 else
2038 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2039 IEEE80211_TX_CTL_REQ_TX_STATUS;
2040
2041 /* Check that we are on the requested channel for transmission */
2042 if (chan != local->tmp_channel &&
2043 chan != local->oper_channel)
2044 is_offchan = true;
2045 if (channel_type_valid &&
2046 (channel_type != local->tmp_channel_type &&
2047 channel_type != local->_oper_channel_type))
2048 is_offchan = true;
2049
2050 if (chan == local->hw_roc_channel) {
2051 /* TODO: check channel type? */
2052 is_offchan = false;
2053 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2054 }
2055
2056 if (no_cck)
2057 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2058
2059 if (is_offchan && !offchan)
2060 return -EBUSY;
2061
2062 switch (sdata->vif.type) {
2063 case NL80211_IFTYPE_ADHOC:
2064 case NL80211_IFTYPE_AP:
2065 case NL80211_IFTYPE_AP_VLAN:
2066 case NL80211_IFTYPE_P2P_GO:
2067 case NL80211_IFTYPE_MESH_POINT:
2068 if (!ieee80211_is_action(mgmt->frame_control) ||
2069 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2070 break;
2071 rcu_read_lock();
2072 sta = sta_info_get(sdata, mgmt->da);
2073 rcu_read_unlock();
2074 if (!sta)
2075 return -ENOLINK;
2076 break;
2077 case NL80211_IFTYPE_STATION:
2078 case NL80211_IFTYPE_P2P_CLIENT:
2079 break;
2080 default:
2081 return -EOPNOTSUPP;
2082 }
2083
2084 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2085 if (!skb)
2086 return -ENOMEM;
2087 skb_reserve(skb, local->hw.extra_tx_headroom);
2088
2089 memcpy(skb_put(skb, len), buf, len);
2090
2091 IEEE80211_SKB_CB(skb)->flags = flags;
2092
2093 skb->dev = sdata->dev;
2094
2095 *cookie = (unsigned long) skb;
2096
2097 if (is_offchan && local->ops->remain_on_channel) {
2098 unsigned int duration;
2099 int ret;
2100
2101 mutex_lock(&local->mtx);
2102 /*
2103 * If the duration is zero, then the driver
2104 * wouldn't actually do anything. Set it to
2105 * 100 for now.
2106 *
2107 * TODO: cancel the off-channel operation
2108 * when we get the SKB's TX status and
2109 * the wait time was zero before.
2110 */
2111 duration = 100;
2112 if (wait)
2113 duration = wait;
2114 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2115 channel_type,
2116 duration, cookie);
2117 if (ret) {
2118 kfree_skb(skb);
2119 mutex_unlock(&local->mtx);
2120 return ret;
2121 }
2122
2123 local->hw_roc_for_tx = true;
2124 local->hw_roc_duration = wait;
2125
2126 /*
2127 * queue up frame for transmission after
2128 * ieee80211_ready_on_channel call
2129 */
2130
2131 /* modify cookie to prevent API mismatches */
2132 *cookie ^= 2;
2133 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2134 local->hw_roc_skb = skb;
2135 local->hw_roc_skb_for_status = skb;
2136 mutex_unlock(&local->mtx);
2137
2138 return 0;
2139 }
2140
2141 /*
2142 * Can transmit right away if the channel was the
2143 * right one and there's no wait involved... If a
2144 * wait is involved, we might otherwise not be on
2145 * the right channel for long enough!
2146 */
2147 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2148 ieee80211_tx_skb(sdata, skb);
2149 return 0;
2150 }
2151
2152 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2153 if (!wk) {
2154 kfree_skb(skb);
2155 return -ENOMEM;
2156 }
2157
2158 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2159 wk->chan = chan;
2160 wk->chan_type = channel_type;
2161 wk->sdata = sdata;
2162 wk->done = ieee80211_offchan_tx_done;
2163 wk->offchan_tx.frame = skb;
2164 wk->offchan_tx.wait = wait;
2165 wk->data_len = len;
2166 memcpy(wk->data, buf, len);
2167
2168 ieee80211_add_work(wk);
2169 return 0;
2170 }
2171
2172 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2173 struct net_device *dev,
2174 u64 cookie)
2175 {
2176 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2177 struct ieee80211_local *local = sdata->local;
2178 struct ieee80211_work *wk;
2179 int ret = -ENOENT;
2180
2181 mutex_lock(&local->mtx);
2182
2183 if (local->ops->cancel_remain_on_channel) {
2184 cookie ^= 2;
2185 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2186
2187 if (ret == 0) {
2188 kfree_skb(local->hw_roc_skb);
2189 local->hw_roc_skb = NULL;
2190 local->hw_roc_skb_for_status = NULL;
2191 }
2192
2193 mutex_unlock(&local->mtx);
2194
2195 return ret;
2196 }
2197
2198 list_for_each_entry(wk, &local->work_list, list) {
2199 if (wk->sdata != sdata)
2200 continue;
2201
2202 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2203 continue;
2204
2205 if (cookie != (unsigned long) wk->offchan_tx.frame)
2206 continue;
2207
2208 wk->timeout = jiffies;
2209
2210 ieee80211_queue_work(&local->hw, &local->work_work);
2211 ret = 0;
2212 break;
2213 }
2214 mutex_unlock(&local->mtx);
2215
2216 return ret;
2217 }
2218
2219 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2220 struct net_device *dev,
2221 u16 frame_type, bool reg)
2222 {
2223 struct ieee80211_local *local = wiphy_priv(wiphy);
2224
2225 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2226 return;
2227
2228 if (reg)
2229 local->probe_req_reg++;
2230 else
2231 local->probe_req_reg--;
2232
2233 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2234 }
2235
2236 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2237 {
2238 struct ieee80211_local *local = wiphy_priv(wiphy);
2239
2240 if (local->started)
2241 return -EOPNOTSUPP;
2242
2243 return drv_set_antenna(local, tx_ant, rx_ant);
2244 }
2245
2246 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2247 {
2248 struct ieee80211_local *local = wiphy_priv(wiphy);
2249
2250 return drv_get_antenna(local, tx_ant, rx_ant);
2251 }
2252
2253 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2254 {
2255 struct ieee80211_local *local = wiphy_priv(wiphy);
2256
2257 return drv_set_ringparam(local, tx, rx);
2258 }
2259
2260 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2261 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2262 {
2263 struct ieee80211_local *local = wiphy_priv(wiphy);
2264
2265 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2266 }
2267
2268 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2269 struct net_device *dev,
2270 struct cfg80211_gtk_rekey_data *data)
2271 {
2272 struct ieee80211_local *local = wiphy_priv(wiphy);
2273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2274
2275 if (!local->ops->set_rekey_data)
2276 return -EOPNOTSUPP;
2277
2278 drv_set_rekey_data(local, sdata, data);
2279
2280 return 0;
2281 }
2282
2283 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2284 {
2285 u8 *pos = (void *)skb_put(skb, 7);
2286
2287 *pos++ = WLAN_EID_EXT_CAPABILITY;
2288 *pos++ = 5; /* len */
2289 *pos++ = 0x0;
2290 *pos++ = 0x0;
2291 *pos++ = 0x0;
2292 *pos++ = 0x0;
2293 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2294 }
2295
2296 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2297 {
2298 struct ieee80211_local *local = sdata->local;
2299 u16 capab;
2300
2301 capab = 0;
2302 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2303 return capab;
2304
2305 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2306 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2307 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2308 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2309
2310 return capab;
2311 }
2312
2313 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2314 u8 *peer, u8 *bssid)
2315 {
2316 struct ieee80211_tdls_lnkie *lnkid;
2317
2318 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2319
2320 lnkid->ie_type = WLAN_EID_LINK_ID;
2321 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2322
2323 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2324 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2325 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2326 }
2327
2328 static int
2329 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2330 u8 *peer, u8 action_code, u8 dialog_token,
2331 u16 status_code, struct sk_buff *skb)
2332 {
2333 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2334 struct ieee80211_tdls_data *tf;
2335
2336 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2337
2338 memcpy(tf->da, peer, ETH_ALEN);
2339 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2340 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2341 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2342
2343 switch (action_code) {
2344 case WLAN_TDLS_SETUP_REQUEST:
2345 tf->category = WLAN_CATEGORY_TDLS;
2346 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2347
2348 skb_put(skb, sizeof(tf->u.setup_req));
2349 tf->u.setup_req.dialog_token = dialog_token;
2350 tf->u.setup_req.capability =
2351 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2352
2353 ieee80211_add_srates_ie(&sdata->vif, skb);
2354 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2355 ieee80211_tdls_add_ext_capab(skb);
2356 break;
2357 case WLAN_TDLS_SETUP_RESPONSE:
2358 tf->category = WLAN_CATEGORY_TDLS;
2359 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2360
2361 skb_put(skb, sizeof(tf->u.setup_resp));
2362 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2363 tf->u.setup_resp.dialog_token = dialog_token;
2364 tf->u.setup_resp.capability =
2365 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2366
2367 ieee80211_add_srates_ie(&sdata->vif, skb);
2368 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2369 ieee80211_tdls_add_ext_capab(skb);
2370 break;
2371 case WLAN_TDLS_SETUP_CONFIRM:
2372 tf->category = WLAN_CATEGORY_TDLS;
2373 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2374
2375 skb_put(skb, sizeof(tf->u.setup_cfm));
2376 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2377 tf->u.setup_cfm.dialog_token = dialog_token;
2378 break;
2379 case WLAN_TDLS_TEARDOWN:
2380 tf->category = WLAN_CATEGORY_TDLS;
2381 tf->action_code = WLAN_TDLS_TEARDOWN;
2382
2383 skb_put(skb, sizeof(tf->u.teardown));
2384 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2385 break;
2386 case WLAN_TDLS_DISCOVERY_REQUEST:
2387 tf->category = WLAN_CATEGORY_TDLS;
2388 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2389
2390 skb_put(skb, sizeof(tf->u.discover_req));
2391 tf->u.discover_req.dialog_token = dialog_token;
2392 break;
2393 default:
2394 return -EINVAL;
2395 }
2396
2397 return 0;
2398 }
2399
2400 static int
2401 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2402 u8 *peer, u8 action_code, u8 dialog_token,
2403 u16 status_code, struct sk_buff *skb)
2404 {
2405 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2406 struct ieee80211_mgmt *mgmt;
2407
2408 mgmt = (void *)skb_put(skb, 24);
2409 memset(mgmt, 0, 24);
2410 memcpy(mgmt->da, peer, ETH_ALEN);
2411 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2412 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2413
2414 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2415 IEEE80211_STYPE_ACTION);
2416
2417 switch (action_code) {
2418 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2419 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2420 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2421 mgmt->u.action.u.tdls_discover_resp.action_code =
2422 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2423 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2424 dialog_token;
2425 mgmt->u.action.u.tdls_discover_resp.capability =
2426 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2427
2428 ieee80211_add_srates_ie(&sdata->vif, skb);
2429 ieee80211_add_ext_srates_ie(&sdata->vif, skb);
2430 ieee80211_tdls_add_ext_capab(skb);
2431 break;
2432 default:
2433 return -EINVAL;
2434 }
2435
2436 return 0;
2437 }
2438
2439 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2440 u8 *peer, u8 action_code, u8 dialog_token,
2441 u16 status_code, const u8 *extra_ies,
2442 size_t extra_ies_len)
2443 {
2444 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2445 struct ieee80211_local *local = sdata->local;
2446 struct ieee80211_tx_info *info;
2447 struct sk_buff *skb = NULL;
2448 bool send_direct;
2449 int ret;
2450
2451 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2452 return -ENOTSUPP;
2453
2454 /* make sure we are in managed mode, and associated */
2455 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2456 !sdata->u.mgd.associated)
2457 return -EINVAL;
2458
2459 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2460 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2461 #endif
2462
2463 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2464 max(sizeof(struct ieee80211_mgmt),
2465 sizeof(struct ieee80211_tdls_data)) +
2466 50 + /* supported rates */
2467 7 + /* ext capab */
2468 extra_ies_len +
2469 sizeof(struct ieee80211_tdls_lnkie));
2470 if (!skb)
2471 return -ENOMEM;
2472
2473 info = IEEE80211_SKB_CB(skb);
2474 skb_reserve(skb, local->hw.extra_tx_headroom);
2475
2476 switch (action_code) {
2477 case WLAN_TDLS_SETUP_REQUEST:
2478 case WLAN_TDLS_SETUP_RESPONSE:
2479 case WLAN_TDLS_SETUP_CONFIRM:
2480 case WLAN_TDLS_TEARDOWN:
2481 case WLAN_TDLS_DISCOVERY_REQUEST:
2482 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2483 action_code, dialog_token,
2484 status_code, skb);
2485 send_direct = false;
2486 break;
2487 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2488 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2489 dialog_token, status_code,
2490 skb);
2491 send_direct = true;
2492 break;
2493 default:
2494 ret = -ENOTSUPP;
2495 break;
2496 }
2497
2498 if (ret < 0)
2499 goto fail;
2500
2501 if (extra_ies_len)
2502 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2503
2504 /* the TDLS link IE is always added last */
2505 switch (action_code) {
2506 case WLAN_TDLS_SETUP_REQUEST:
2507 case WLAN_TDLS_SETUP_CONFIRM:
2508 case WLAN_TDLS_TEARDOWN:
2509 case WLAN_TDLS_DISCOVERY_REQUEST:
2510 /* we are the initiator */
2511 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2512 sdata->u.mgd.bssid);
2513 break;
2514 case WLAN_TDLS_SETUP_RESPONSE:
2515 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2516 /* we are the responder */
2517 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2518 sdata->u.mgd.bssid);
2519 break;
2520 default:
2521 ret = -ENOTSUPP;
2522 goto fail;
2523 }
2524
2525 if (send_direct) {
2526 ieee80211_tx_skb(sdata, skb);
2527 return 0;
2528 }
2529
2530 /*
2531 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2532 * we should default to AC_VI.
2533 */
2534 switch (action_code) {
2535 case WLAN_TDLS_SETUP_REQUEST:
2536 case WLAN_TDLS_SETUP_RESPONSE:
2537 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2538 skb->priority = 2;
2539 break;
2540 default:
2541 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2542 skb->priority = 5;
2543 break;
2544 }
2545
2546 /* disable bottom halves when entering the Tx path */
2547 local_bh_disable();
2548 ret = ieee80211_subif_start_xmit(skb, dev);
2549 local_bh_enable();
2550
2551 return ret;
2552
2553 fail:
2554 dev_kfree_skb(skb);
2555 return ret;
2556 }
2557
2558 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2559 u8 *peer, enum nl80211_tdls_operation oper)
2560 {
2561 struct sta_info *sta;
2562 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2563
2564 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2565 return -ENOTSUPP;
2566
2567 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2568 return -EINVAL;
2569
2570 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2571 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2572 #endif
2573
2574 switch (oper) {
2575 case NL80211_TDLS_ENABLE_LINK:
2576 rcu_read_lock();
2577 sta = sta_info_get(sdata, peer);
2578 if (!sta) {
2579 rcu_read_unlock();
2580 return -ENOLINK;
2581 }
2582
2583 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2584 rcu_read_unlock();
2585 break;
2586 case NL80211_TDLS_DISABLE_LINK:
2587 return sta_info_destroy_addr(sdata, peer);
2588 case NL80211_TDLS_TEARDOWN:
2589 case NL80211_TDLS_SETUP:
2590 case NL80211_TDLS_DISCOVERY_REQ:
2591 /* We don't support in-driver setup/teardown/discovery */
2592 return -ENOTSUPP;
2593 default:
2594 return -ENOTSUPP;
2595 }
2596
2597 return 0;
2598 }
2599
2600 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2601 const u8 *peer, u64 *cookie)
2602 {
2603 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2604 struct ieee80211_local *local = sdata->local;
2605 struct ieee80211_qos_hdr *nullfunc;
2606 struct sk_buff *skb;
2607 int size = sizeof(*nullfunc);
2608 __le16 fc;
2609 bool qos;
2610 struct ieee80211_tx_info *info;
2611 struct sta_info *sta;
2612
2613 rcu_read_lock();
2614 sta = sta_info_get(sdata, peer);
2615 if (sta) {
2616 qos = test_sta_flag(sta, WLAN_STA_WME);
2617 rcu_read_unlock();
2618 } else {
2619 rcu_read_unlock();
2620 return -ENOLINK;
2621 }
2622
2623 if (qos) {
2624 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2625 IEEE80211_STYPE_QOS_NULLFUNC |
2626 IEEE80211_FCTL_FROMDS);
2627 } else {
2628 size -= 2;
2629 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2630 IEEE80211_STYPE_NULLFUNC |
2631 IEEE80211_FCTL_FROMDS);
2632 }
2633
2634 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2635 if (!skb)
2636 return -ENOMEM;
2637
2638 skb->dev = dev;
2639
2640 skb_reserve(skb, local->hw.extra_tx_headroom);
2641
2642 nullfunc = (void *) skb_put(skb, size);
2643 nullfunc->frame_control = fc;
2644 nullfunc->duration_id = 0;
2645 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2646 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2647 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2648 nullfunc->seq_ctrl = 0;
2649
2650 info = IEEE80211_SKB_CB(skb);
2651
2652 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2653 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2654
2655 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2656 skb->priority = 7;
2657 if (qos)
2658 nullfunc->qos_ctrl = cpu_to_le16(7);
2659
2660 local_bh_disable();
2661 ieee80211_xmit(sdata, skb);
2662 local_bh_enable();
2663
2664 *cookie = (unsigned long) skb;
2665 return 0;
2666 }
2667
2668 static struct ieee80211_channel *
2669 ieee80211_wiphy_get_channel(struct wiphy *wiphy)
2670 {
2671 struct ieee80211_local *local = wiphy_priv(wiphy);
2672
2673 return local->oper_channel;
2674 }
2675
2676 struct cfg80211_ops mac80211_config_ops = {
2677 .add_virtual_intf = ieee80211_add_iface,
2678 .del_virtual_intf = ieee80211_del_iface,
2679 .change_virtual_intf = ieee80211_change_iface,
2680 .add_key = ieee80211_add_key,
2681 .del_key = ieee80211_del_key,
2682 .get_key = ieee80211_get_key,
2683 .set_default_key = ieee80211_config_default_key,
2684 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2685 .start_ap = ieee80211_start_ap,
2686 .change_beacon = ieee80211_change_beacon,
2687 .stop_ap = ieee80211_stop_ap,
2688 .add_station = ieee80211_add_station,
2689 .del_station = ieee80211_del_station,
2690 .change_station = ieee80211_change_station,
2691 .get_station = ieee80211_get_station,
2692 .dump_station = ieee80211_dump_station,
2693 .dump_survey = ieee80211_dump_survey,
2694 #ifdef CONFIG_MAC80211_MESH
2695 .add_mpath = ieee80211_add_mpath,
2696 .del_mpath = ieee80211_del_mpath,
2697 .change_mpath = ieee80211_change_mpath,
2698 .get_mpath = ieee80211_get_mpath,
2699 .dump_mpath = ieee80211_dump_mpath,
2700 .update_mesh_config = ieee80211_update_mesh_config,
2701 .get_mesh_config = ieee80211_get_mesh_config,
2702 .join_mesh = ieee80211_join_mesh,
2703 .leave_mesh = ieee80211_leave_mesh,
2704 #endif
2705 .change_bss = ieee80211_change_bss,
2706 .set_txq_params = ieee80211_set_txq_params,
2707 .set_channel = ieee80211_set_channel,
2708 .suspend = ieee80211_suspend,
2709 .resume = ieee80211_resume,
2710 .scan = ieee80211_scan,
2711 .sched_scan_start = ieee80211_sched_scan_start,
2712 .sched_scan_stop = ieee80211_sched_scan_stop,
2713 .auth = ieee80211_auth,
2714 .assoc = ieee80211_assoc,
2715 .deauth = ieee80211_deauth,
2716 .disassoc = ieee80211_disassoc,
2717 .join_ibss = ieee80211_join_ibss,
2718 .leave_ibss = ieee80211_leave_ibss,
2719 .set_wiphy_params = ieee80211_set_wiphy_params,
2720 .set_tx_power = ieee80211_set_tx_power,
2721 .get_tx_power = ieee80211_get_tx_power,
2722 .set_wds_peer = ieee80211_set_wds_peer,
2723 .rfkill_poll = ieee80211_rfkill_poll,
2724 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2725 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2726 .set_power_mgmt = ieee80211_set_power_mgmt,
2727 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2728 .remain_on_channel = ieee80211_remain_on_channel,
2729 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2730 .mgmt_tx = ieee80211_mgmt_tx,
2731 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2732 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2733 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2734 .set_antenna = ieee80211_set_antenna,
2735 .get_antenna = ieee80211_get_antenna,
2736 .set_ringparam = ieee80211_set_ringparam,
2737 .get_ringparam = ieee80211_get_ringparam,
2738 .set_rekey_data = ieee80211_set_rekey_data,
2739 .tdls_oper = ieee80211_tdls_oper,
2740 .tdls_mgmt = ieee80211_tdls_mgmt,
2741 .probe_client = ieee80211_probe_client,
2742 .get_channel = ieee80211_wiphy_get_channel,
2743 .set_noack_map = ieee80211_set_noack_map,
2744 };
(deprecated) Btrfs devel tree