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[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 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 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
416 sinfo->filled |= STATION_INFO_T_OFFSET;
417 sinfo->t_offset = sta->t_offset;
418 }
419 #endif
420 }
421
422 sinfo->bss_param.flags = 0;
423 if (sdata->vif.bss_conf.use_cts_prot)
424 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
425 if (sdata->vif.bss_conf.use_short_preamble)
426 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
427 if (sdata->vif.bss_conf.use_short_slot)
428 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
429 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
430 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
431
432 sinfo->sta_flags.set = 0;
433 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
434 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
435 BIT(NL80211_STA_FLAG_WME) |
436 BIT(NL80211_STA_FLAG_MFP) |
437 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
438 BIT(NL80211_STA_FLAG_TDLS_PEER);
439 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
440 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
441 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
442 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
443 if (test_sta_flag(sta, WLAN_STA_WME))
444 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
445 if (test_sta_flag(sta, WLAN_STA_MFP))
446 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
447 if (test_sta_flag(sta, WLAN_STA_AUTH))
448 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
449 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
450 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
451 }
452
453
454 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
455 int idx, u8 *mac, struct station_info *sinfo)
456 {
457 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
458 struct sta_info *sta;
459 int ret = -ENOENT;
460
461 rcu_read_lock();
462
463 sta = sta_info_get_by_idx(sdata, idx);
464 if (sta) {
465 ret = 0;
466 memcpy(mac, sta->sta.addr, ETH_ALEN);
467 sta_set_sinfo(sta, sinfo);
468 }
469
470 rcu_read_unlock();
471
472 return ret;
473 }
474
475 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
476 int idx, struct survey_info *survey)
477 {
478 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
479
480 return drv_get_survey(local, idx, survey);
481 }
482
483 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
484 u8 *mac, struct station_info *sinfo)
485 {
486 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
487 struct sta_info *sta;
488 int ret = -ENOENT;
489
490 rcu_read_lock();
491
492 sta = sta_info_get_bss(sdata, mac);
493 if (sta) {
494 ret = 0;
495 sta_set_sinfo(sta, sinfo);
496 }
497
498 rcu_read_unlock();
499
500 return ret;
501 }
502
503 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
504 const u8 *resp, size_t resp_len)
505 {
506 struct sk_buff *new, *old;
507
508 if (!resp || !resp_len)
509 return 1;
510
511 old = rtnl_dereference(sdata->u.ap.probe_resp);
512
513 new = dev_alloc_skb(resp_len);
514 if (!new)
515 return -ENOMEM;
516
517 memcpy(skb_put(new, resp_len), resp, resp_len);
518
519 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
520 if (old) {
521 /* TODO: use call_rcu() */
522 synchronize_rcu();
523 dev_kfree_skb(old);
524 }
525
526 return 0;
527 }
528
529 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
530 struct cfg80211_beacon_data *params)
531 {
532 struct beacon_data *new, *old;
533 int new_head_len, new_tail_len;
534 int size, err;
535 u32 changed = BSS_CHANGED_BEACON;
536
537 old = rtnl_dereference(sdata->u.ap.beacon);
538
539 /* Need to have a beacon head if we don't have one yet */
540 if (!params->head && !old)
541 return -EINVAL;
542
543 /* new or old head? */
544 if (params->head)
545 new_head_len = params->head_len;
546 else
547 new_head_len = old->head_len;
548
549 /* new or old tail? */
550 if (params->tail || !old)
551 /* params->tail_len will be zero for !params->tail */
552 new_tail_len = params->tail_len;
553 else
554 new_tail_len = old->tail_len;
555
556 size = sizeof(*new) + new_head_len + new_tail_len;
557
558 new = kzalloc(size, GFP_KERNEL);
559 if (!new)
560 return -ENOMEM;
561
562 /* start filling the new info now */
563
564 /*
565 * pointers go into the block we allocated,
566 * memory is | beacon_data | head | tail |
567 */
568 new->head = ((u8 *) new) + sizeof(*new);
569 new->tail = new->head + new_head_len;
570 new->head_len = new_head_len;
571 new->tail_len = new_tail_len;
572
573 /* copy in head */
574 if (params->head)
575 memcpy(new->head, params->head, new_head_len);
576 else
577 memcpy(new->head, old->head, new_head_len);
578
579 /* copy in optional tail */
580 if (params->tail)
581 memcpy(new->tail, params->tail, new_tail_len);
582 else
583 if (old)
584 memcpy(new->tail, old->tail, new_tail_len);
585
586 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
587 params->probe_resp_len);
588 if (err < 0)
589 return err;
590 if (err == 0)
591 changed |= BSS_CHANGED_AP_PROBE_RESP;
592
593 rcu_assign_pointer(sdata->u.ap.beacon, new);
594
595 if (old)
596 kfree_rcu(old, rcu_head);
597
598 return changed;
599 }
600
601 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
602 struct cfg80211_ap_settings *params)
603 {
604 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
605 struct beacon_data *old;
606 struct ieee80211_sub_if_data *vlan;
607 u32 changed = BSS_CHANGED_BEACON_INT |
608 BSS_CHANGED_BEACON_ENABLED |
609 BSS_CHANGED_BEACON |
610 BSS_CHANGED_SSID;
611 int err;
612
613 old = rtnl_dereference(sdata->u.ap.beacon);
614 if (old)
615 return -EALREADY;
616
617 /*
618 * Apply control port protocol, this allows us to
619 * not encrypt dynamic WEP control frames.
620 */
621 sdata->control_port_protocol = params->crypto.control_port_ethertype;
622 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
623 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
624 vlan->control_port_protocol =
625 params->crypto.control_port_ethertype;
626 vlan->control_port_no_encrypt =
627 params->crypto.control_port_no_encrypt;
628 }
629
630 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
631 sdata->vif.bss_conf.dtim_period = params->dtim_period;
632
633 sdata->vif.bss_conf.ssid_len = params->ssid_len;
634 if (params->ssid_len)
635 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
636 params->ssid_len);
637 sdata->vif.bss_conf.hidden_ssid =
638 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
639
640 err = ieee80211_assign_beacon(sdata, &params->beacon);
641 if (err < 0)
642 return err;
643 changed |= err;
644
645 ieee80211_bss_info_change_notify(sdata, changed);
646
647 netif_carrier_on(dev);
648 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
649 netif_carrier_on(vlan->dev);
650
651 return 0;
652 }
653
654 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
655 struct cfg80211_beacon_data *params)
656 {
657 struct ieee80211_sub_if_data *sdata;
658 struct beacon_data *old;
659 int err;
660
661 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
662
663 old = rtnl_dereference(sdata->u.ap.beacon);
664 if (!old)
665 return -ENOENT;
666
667 err = ieee80211_assign_beacon(sdata, params);
668 if (err < 0)
669 return err;
670 ieee80211_bss_info_change_notify(sdata, err);
671 return 0;
672 }
673
674 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
675 {
676 struct ieee80211_sub_if_data *sdata, *vlan;
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 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
686 netif_carrier_off(vlan->dev);
687 netif_carrier_off(dev);
688
689 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
690
691 kfree_rcu(old, rcu_head);
692
693 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
694
695 return 0;
696 }
697
698 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
699 struct iapp_layer2_update {
700 u8 da[ETH_ALEN]; /* broadcast */
701 u8 sa[ETH_ALEN]; /* STA addr */
702 __be16 len; /* 6 */
703 u8 dsap; /* 0 */
704 u8 ssap; /* 0 */
705 u8 control;
706 u8 xid_info[3];
707 } __packed;
708
709 static void ieee80211_send_layer2_update(struct sta_info *sta)
710 {
711 struct iapp_layer2_update *msg;
712 struct sk_buff *skb;
713
714 /* Send Level 2 Update Frame to update forwarding tables in layer 2
715 * bridge devices */
716
717 skb = dev_alloc_skb(sizeof(*msg));
718 if (!skb)
719 return;
720 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
721
722 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
723 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
724
725 memset(msg->da, 0xff, ETH_ALEN);
726 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
727 msg->len = htons(6);
728 msg->dsap = 0;
729 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
730 msg->control = 0xaf; /* XID response lsb.1111F101.
731 * F=0 (no poll command; unsolicited frame) */
732 msg->xid_info[0] = 0x81; /* XID format identifier */
733 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
734 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
735
736 skb->dev = sta->sdata->dev;
737 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
738 memset(skb->cb, 0, sizeof(skb->cb));
739 netif_rx_ni(skb);
740 }
741
742 static int sta_apply_parameters(struct ieee80211_local *local,
743 struct sta_info *sta,
744 struct station_parameters *params)
745 {
746 int ret = 0;
747 u32 rates;
748 int i, j;
749 struct ieee80211_supported_band *sband;
750 struct ieee80211_sub_if_data *sdata = sta->sdata;
751 u32 mask, set;
752
753 sband = local->hw.wiphy->bands[local->oper_channel->band];
754
755 mask = params->sta_flags_mask;
756 set = params->sta_flags_set;
757
758 /*
759 * In mesh mode, we can clear AUTHENTICATED flag but must
760 * also make ASSOCIATED follow appropriately for the driver
761 * API. See also below, after AUTHORIZED changes.
762 */
763 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
764 /* cfg80211 should not allow this in non-mesh modes */
765 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
766 return -EINVAL;
767
768 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
769 !test_sta_flag(sta, WLAN_STA_AUTH)) {
770 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
771 if (ret)
772 return ret;
773 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
774 if (ret)
775 return ret;
776 }
777 }
778
779 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
780 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
781 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
782 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
783 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
784 if (ret)
785 return ret;
786 }
787
788 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
789 /* cfg80211 should not allow this in non-mesh modes */
790 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
791 return -EINVAL;
792
793 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
794 test_sta_flag(sta, WLAN_STA_AUTH)) {
795 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
796 if (ret)
797 return ret;
798 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
799 if (ret)
800 return ret;
801 }
802 }
803
804
805 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
806 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
807 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
808 else
809 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
810 }
811
812 if (mask & BIT(NL80211_STA_FLAG_WME)) {
813 if (set & BIT(NL80211_STA_FLAG_WME)) {
814 set_sta_flag(sta, WLAN_STA_WME);
815 sta->sta.wme = true;
816 } else {
817 clear_sta_flag(sta, WLAN_STA_WME);
818 sta->sta.wme = false;
819 }
820 }
821
822 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
823 if (set & BIT(NL80211_STA_FLAG_MFP))
824 set_sta_flag(sta, WLAN_STA_MFP);
825 else
826 clear_sta_flag(sta, WLAN_STA_MFP);
827 }
828
829 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
830 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
831 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
832 else
833 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
834 }
835
836 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
837 sta->sta.uapsd_queues = params->uapsd_queues;
838 sta->sta.max_sp = params->max_sp;
839 }
840
841 /*
842 * cfg80211 validates this (1-2007) and allows setting the AID
843 * only when creating a new station entry
844 */
845 if (params->aid)
846 sta->sta.aid = params->aid;
847
848 /*
849 * FIXME: updating the following information is racy when this
850 * function is called from ieee80211_change_station().
851 * However, all this information should be static so
852 * maybe we should just reject attemps to change it.
853 */
854
855 if (params->listen_interval >= 0)
856 sta->listen_interval = params->listen_interval;
857
858 if (params->supported_rates) {
859 rates = 0;
860
861 for (i = 0; i < params->supported_rates_len; i++) {
862 int rate = (params->supported_rates[i] & 0x7f) * 5;
863 for (j = 0; j < sband->n_bitrates; j++) {
864 if (sband->bitrates[j].bitrate == rate)
865 rates |= BIT(j);
866 }
867 }
868 sta->sta.supp_rates[local->oper_channel->band] = rates;
869 }
870
871 if (params->ht_capa)
872 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
873 params->ht_capa,
874 &sta->sta.ht_cap);
875
876 if (ieee80211_vif_is_mesh(&sdata->vif)) {
877 #ifdef CONFIG_MAC80211_MESH
878 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
879 switch (params->plink_state) {
880 case NL80211_PLINK_LISTEN:
881 case NL80211_PLINK_ESTAB:
882 case NL80211_PLINK_BLOCKED:
883 sta->plink_state = params->plink_state;
884 break;
885 default:
886 /* nothing */
887 break;
888 }
889 else
890 switch (params->plink_action) {
891 case PLINK_ACTION_OPEN:
892 mesh_plink_open(sta);
893 break;
894 case PLINK_ACTION_BLOCK:
895 mesh_plink_block(sta);
896 break;
897 }
898 #endif
899 }
900
901 return 0;
902 }
903
904 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
905 u8 *mac, struct station_parameters *params)
906 {
907 struct ieee80211_local *local = wiphy_priv(wiphy);
908 struct sta_info *sta;
909 struct ieee80211_sub_if_data *sdata;
910 int err;
911 int layer2_update;
912
913 if (params->vlan) {
914 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
915
916 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
917 sdata->vif.type != NL80211_IFTYPE_AP)
918 return -EINVAL;
919 } else
920 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
921
922 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
923 return -EINVAL;
924
925 if (is_multicast_ether_addr(mac))
926 return -EINVAL;
927
928 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
929 if (!sta)
930 return -ENOMEM;
931
932 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
933 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
934
935 err = sta_apply_parameters(local, sta, params);
936 if (err) {
937 sta_info_free(local, sta);
938 return err;
939 }
940
941 /*
942 * for TDLS, rate control should be initialized only when supported
943 * rates are known.
944 */
945 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
946 rate_control_rate_init(sta);
947
948 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
949 sdata->vif.type == NL80211_IFTYPE_AP;
950
951 err = sta_info_insert_rcu(sta);
952 if (err) {
953 rcu_read_unlock();
954 return err;
955 }
956
957 if (layer2_update)
958 ieee80211_send_layer2_update(sta);
959
960 rcu_read_unlock();
961
962 return 0;
963 }
964
965 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
966 u8 *mac)
967 {
968 struct ieee80211_local *local = wiphy_priv(wiphy);
969 struct ieee80211_sub_if_data *sdata;
970
971 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
972
973 if (mac)
974 return sta_info_destroy_addr_bss(sdata, mac);
975
976 sta_info_flush(local, sdata);
977 return 0;
978 }
979
980 static int ieee80211_change_station(struct wiphy *wiphy,
981 struct net_device *dev,
982 u8 *mac,
983 struct station_parameters *params)
984 {
985 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
986 struct ieee80211_local *local = wiphy_priv(wiphy);
987 struct sta_info *sta;
988 struct ieee80211_sub_if_data *vlansdata;
989 int err;
990
991 mutex_lock(&local->sta_mtx);
992
993 sta = sta_info_get_bss(sdata, mac);
994 if (!sta) {
995 mutex_unlock(&local->sta_mtx);
996 return -ENOENT;
997 }
998
999 /* in station mode, supported rates are only valid with TDLS */
1000 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1001 params->supported_rates &&
1002 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1003 mutex_unlock(&local->sta_mtx);
1004 return -EINVAL;
1005 }
1006
1007 if (params->vlan && params->vlan != sta->sdata->dev) {
1008 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1009
1010 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1011 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1012 mutex_unlock(&local->sta_mtx);
1013 return -EINVAL;
1014 }
1015
1016 if (params->vlan->ieee80211_ptr->use_4addr) {
1017 if (vlansdata->u.vlan.sta) {
1018 mutex_unlock(&local->sta_mtx);
1019 return -EBUSY;
1020 }
1021
1022 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1023 }
1024
1025 sta->sdata = vlansdata;
1026 ieee80211_send_layer2_update(sta);
1027 }
1028
1029 err = sta_apply_parameters(local, sta, params);
1030 if (err) {
1031 mutex_unlock(&local->sta_mtx);
1032 return err;
1033 }
1034
1035 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1036 rate_control_rate_init(sta);
1037
1038 mutex_unlock(&local->sta_mtx);
1039
1040 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1041 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1042 ieee80211_recalc_ps(local, -1);
1043
1044 return 0;
1045 }
1046
1047 #ifdef CONFIG_MAC80211_MESH
1048 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1049 u8 *dst, u8 *next_hop)
1050 {
1051 struct ieee80211_sub_if_data *sdata;
1052 struct mesh_path *mpath;
1053 struct sta_info *sta;
1054 int err;
1055
1056 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1057
1058 rcu_read_lock();
1059 sta = sta_info_get(sdata, next_hop);
1060 if (!sta) {
1061 rcu_read_unlock();
1062 return -ENOENT;
1063 }
1064
1065 err = mesh_path_add(dst, sdata);
1066 if (err) {
1067 rcu_read_unlock();
1068 return err;
1069 }
1070
1071 mpath = mesh_path_lookup(dst, sdata);
1072 if (!mpath) {
1073 rcu_read_unlock();
1074 return -ENXIO;
1075 }
1076 mesh_path_fix_nexthop(mpath, sta);
1077
1078 rcu_read_unlock();
1079 return 0;
1080 }
1081
1082 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1083 u8 *dst)
1084 {
1085 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1086
1087 if (dst)
1088 return mesh_path_del(dst, sdata);
1089
1090 mesh_path_flush_by_iface(sdata);
1091 return 0;
1092 }
1093
1094 static int ieee80211_change_mpath(struct wiphy *wiphy,
1095 struct net_device *dev,
1096 u8 *dst, u8 *next_hop)
1097 {
1098 struct ieee80211_sub_if_data *sdata;
1099 struct mesh_path *mpath;
1100 struct sta_info *sta;
1101
1102 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1103
1104 rcu_read_lock();
1105
1106 sta = sta_info_get(sdata, next_hop);
1107 if (!sta) {
1108 rcu_read_unlock();
1109 return -ENOENT;
1110 }
1111
1112 mpath = mesh_path_lookup(dst, sdata);
1113 if (!mpath) {
1114 rcu_read_unlock();
1115 return -ENOENT;
1116 }
1117
1118 mesh_path_fix_nexthop(mpath, sta);
1119
1120 rcu_read_unlock();
1121 return 0;
1122 }
1123
1124 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1125 struct mpath_info *pinfo)
1126 {
1127 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1128
1129 if (next_hop_sta)
1130 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1131 else
1132 memset(next_hop, 0, ETH_ALEN);
1133
1134 pinfo->generation = mesh_paths_generation;
1135
1136 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1137 MPATH_INFO_SN |
1138 MPATH_INFO_METRIC |
1139 MPATH_INFO_EXPTIME |
1140 MPATH_INFO_DISCOVERY_TIMEOUT |
1141 MPATH_INFO_DISCOVERY_RETRIES |
1142 MPATH_INFO_FLAGS;
1143
1144 pinfo->frame_qlen = mpath->frame_queue.qlen;
1145 pinfo->sn = mpath->sn;
1146 pinfo->metric = mpath->metric;
1147 if (time_before(jiffies, mpath->exp_time))
1148 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1149 pinfo->discovery_timeout =
1150 jiffies_to_msecs(mpath->discovery_timeout);
1151 pinfo->discovery_retries = mpath->discovery_retries;
1152 pinfo->flags = 0;
1153 if (mpath->flags & MESH_PATH_ACTIVE)
1154 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1155 if (mpath->flags & MESH_PATH_RESOLVING)
1156 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1157 if (mpath->flags & MESH_PATH_SN_VALID)
1158 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1159 if (mpath->flags & MESH_PATH_FIXED)
1160 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1161 if (mpath->flags & MESH_PATH_RESOLVING)
1162 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1163
1164 pinfo->flags = mpath->flags;
1165 }
1166
1167 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1168 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1169
1170 {
1171 struct ieee80211_sub_if_data *sdata;
1172 struct mesh_path *mpath;
1173
1174 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176 rcu_read_lock();
1177 mpath = mesh_path_lookup(dst, sdata);
1178 if (!mpath) {
1179 rcu_read_unlock();
1180 return -ENOENT;
1181 }
1182 memcpy(dst, mpath->dst, ETH_ALEN);
1183 mpath_set_pinfo(mpath, next_hop, pinfo);
1184 rcu_read_unlock();
1185 return 0;
1186 }
1187
1188 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1189 int idx, u8 *dst, u8 *next_hop,
1190 struct mpath_info *pinfo)
1191 {
1192 struct ieee80211_sub_if_data *sdata;
1193 struct mesh_path *mpath;
1194
1195 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1196
1197 rcu_read_lock();
1198 mpath = mesh_path_lookup_by_idx(idx, sdata);
1199 if (!mpath) {
1200 rcu_read_unlock();
1201 return -ENOENT;
1202 }
1203 memcpy(dst, mpath->dst, ETH_ALEN);
1204 mpath_set_pinfo(mpath, next_hop, pinfo);
1205 rcu_read_unlock();
1206 return 0;
1207 }
1208
1209 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1210 struct net_device *dev,
1211 struct mesh_config *conf)
1212 {
1213 struct ieee80211_sub_if_data *sdata;
1214 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1215
1216 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1217 return 0;
1218 }
1219
1220 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1221 {
1222 return (mask >> (parm-1)) & 0x1;
1223 }
1224
1225 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1226 const struct mesh_setup *setup)
1227 {
1228 u8 *new_ie;
1229 const u8 *old_ie;
1230 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1231 struct ieee80211_sub_if_data, u.mesh);
1232
1233 /* allocate information elements */
1234 new_ie = NULL;
1235 old_ie = ifmsh->ie;
1236
1237 if (setup->ie_len) {
1238 new_ie = kmemdup(setup->ie, setup->ie_len,
1239 GFP_KERNEL);
1240 if (!new_ie)
1241 return -ENOMEM;
1242 }
1243 ifmsh->ie_len = setup->ie_len;
1244 ifmsh->ie = new_ie;
1245 kfree(old_ie);
1246
1247 /* now copy the rest of the setup parameters */
1248 ifmsh->mesh_id_len = setup->mesh_id_len;
1249 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1250 ifmsh->mesh_sp_id = setup->sync_method;
1251 ifmsh->mesh_pp_id = setup->path_sel_proto;
1252 ifmsh->mesh_pm_id = setup->path_metric;
1253 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1254 if (setup->is_authenticated)
1255 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1256 if (setup->is_secure)
1257 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1258
1259 /* mcast rate setting in Mesh Node */
1260 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1261 sizeof(setup->mcast_rate));
1262
1263 return 0;
1264 }
1265
1266 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1267 struct net_device *dev, u32 mask,
1268 const struct mesh_config *nconf)
1269 {
1270 struct mesh_config *conf;
1271 struct ieee80211_sub_if_data *sdata;
1272 struct ieee80211_if_mesh *ifmsh;
1273
1274 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1275 ifmsh = &sdata->u.mesh;
1276
1277 /* Set the config options which we are interested in setting */
1278 conf = &(sdata->u.mesh.mshcfg);
1279 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1280 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1281 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1282 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1283 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1284 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1285 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1286 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1287 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1288 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1289 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1290 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1291 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1292 conf->dot11MeshTTL = nconf->element_ttl;
1293 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1294 conf->auto_open_plinks = nconf->auto_open_plinks;
1295 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1296 conf->dot11MeshNbrOffsetMaxNeighbor =
1297 nconf->dot11MeshNbrOffsetMaxNeighbor;
1298 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1299 conf->dot11MeshHWMPmaxPREQretries =
1300 nconf->dot11MeshHWMPmaxPREQretries;
1301 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1302 conf->path_refresh_time = nconf->path_refresh_time;
1303 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1304 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1305 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1306 conf->dot11MeshHWMPactivePathTimeout =
1307 nconf->dot11MeshHWMPactivePathTimeout;
1308 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1309 conf->dot11MeshHWMPpreqMinInterval =
1310 nconf->dot11MeshHWMPpreqMinInterval;
1311 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1312 conf->dot11MeshHWMPperrMinInterval =
1313 nconf->dot11MeshHWMPperrMinInterval;
1314 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1315 mask))
1316 conf->dot11MeshHWMPnetDiameterTraversalTime =
1317 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1318 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1319 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1320 ieee80211_mesh_root_setup(ifmsh);
1321 }
1322 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1323 /* our current gate announcement implementation rides on root
1324 * announcements, so require this ifmsh to also be a root node
1325 * */
1326 if (nconf->dot11MeshGateAnnouncementProtocol &&
1327 !conf->dot11MeshHWMPRootMode) {
1328 conf->dot11MeshHWMPRootMode = 1;
1329 ieee80211_mesh_root_setup(ifmsh);
1330 }
1331 conf->dot11MeshGateAnnouncementProtocol =
1332 nconf->dot11MeshGateAnnouncementProtocol;
1333 }
1334 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1335 conf->dot11MeshHWMPRannInterval =
1336 nconf->dot11MeshHWMPRannInterval;
1337 }
1338 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1339 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1340 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1341 /* our RSSI threshold implementation is supported only for
1342 * devices that report signal in dBm.
1343 */
1344 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1345 return -ENOTSUPP;
1346 conf->rssi_threshold = nconf->rssi_threshold;
1347 }
1348 return 0;
1349 }
1350
1351 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1352 const struct mesh_config *conf,
1353 const struct mesh_setup *setup)
1354 {
1355 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1356 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1357 int err;
1358
1359 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1360 err = copy_mesh_setup(ifmsh, setup);
1361 if (err)
1362 return err;
1363 ieee80211_start_mesh(sdata);
1364
1365 return 0;
1366 }
1367
1368 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1369 {
1370 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1371
1372 ieee80211_stop_mesh(sdata);
1373
1374 return 0;
1375 }
1376 #endif
1377
1378 static int ieee80211_change_bss(struct wiphy *wiphy,
1379 struct net_device *dev,
1380 struct bss_parameters *params)
1381 {
1382 struct ieee80211_sub_if_data *sdata;
1383 u32 changed = 0;
1384
1385 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1386
1387 if (params->use_cts_prot >= 0) {
1388 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1389 changed |= BSS_CHANGED_ERP_CTS_PROT;
1390 }
1391 if (params->use_short_preamble >= 0) {
1392 sdata->vif.bss_conf.use_short_preamble =
1393 params->use_short_preamble;
1394 changed |= BSS_CHANGED_ERP_PREAMBLE;
1395 }
1396
1397 if (!sdata->vif.bss_conf.use_short_slot &&
1398 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1399 sdata->vif.bss_conf.use_short_slot = true;
1400 changed |= BSS_CHANGED_ERP_SLOT;
1401 }
1402
1403 if (params->use_short_slot_time >= 0) {
1404 sdata->vif.bss_conf.use_short_slot =
1405 params->use_short_slot_time;
1406 changed |= BSS_CHANGED_ERP_SLOT;
1407 }
1408
1409 if (params->basic_rates) {
1410 int i, j;
1411 u32 rates = 0;
1412 struct ieee80211_local *local = wiphy_priv(wiphy);
1413 struct ieee80211_supported_band *sband =
1414 wiphy->bands[local->oper_channel->band];
1415
1416 for (i = 0; i < params->basic_rates_len; i++) {
1417 int rate = (params->basic_rates[i] & 0x7f) * 5;
1418 for (j = 0; j < sband->n_bitrates; j++) {
1419 if (sband->bitrates[j].bitrate == rate)
1420 rates |= BIT(j);
1421 }
1422 }
1423 sdata->vif.bss_conf.basic_rates = rates;
1424 changed |= BSS_CHANGED_BASIC_RATES;
1425 }
1426
1427 if (params->ap_isolate >= 0) {
1428 if (params->ap_isolate)
1429 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1430 else
1431 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1432 }
1433
1434 if (params->ht_opmode >= 0) {
1435 sdata->vif.bss_conf.ht_operation_mode =
1436 (u16) params->ht_opmode;
1437 changed |= BSS_CHANGED_HT;
1438 }
1439
1440 ieee80211_bss_info_change_notify(sdata, changed);
1441
1442 return 0;
1443 }
1444
1445 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1446 struct net_device *dev,
1447 struct ieee80211_txq_params *params)
1448 {
1449 struct ieee80211_local *local = wiphy_priv(wiphy);
1450 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1451 struct ieee80211_tx_queue_params p;
1452
1453 if (!local->ops->conf_tx)
1454 return -EOPNOTSUPP;
1455
1456 if (local->hw.queues < IEEE80211_NUM_ACS)
1457 return -EOPNOTSUPP;
1458
1459 memset(&p, 0, sizeof(p));
1460 p.aifs = params->aifs;
1461 p.cw_max = params->cwmax;
1462 p.cw_min = params->cwmin;
1463 p.txop = params->txop;
1464
1465 /*
1466 * Setting tx queue params disables u-apsd because it's only
1467 * called in master mode.
1468 */
1469 p.uapsd = false;
1470
1471 sdata->tx_conf[params->ac] = p;
1472 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1473 wiphy_debug(local->hw.wiphy,
1474 "failed to set TX queue parameters for AC %d\n",
1475 params->ac);
1476 return -EINVAL;
1477 }
1478
1479 return 0;
1480 }
1481
1482 static int ieee80211_set_channel(struct wiphy *wiphy,
1483 struct net_device *netdev,
1484 struct ieee80211_channel *chan,
1485 enum nl80211_channel_type channel_type)
1486 {
1487 struct ieee80211_local *local = wiphy_priv(wiphy);
1488 struct ieee80211_sub_if_data *sdata = NULL;
1489 struct ieee80211_channel *old_oper;
1490 enum nl80211_channel_type old_oper_type;
1491 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1492
1493 if (netdev)
1494 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1495
1496 switch (ieee80211_get_channel_mode(local, NULL)) {
1497 case CHAN_MODE_HOPPING:
1498 return -EBUSY;
1499 case CHAN_MODE_FIXED:
1500 if (local->oper_channel != chan)
1501 return -EBUSY;
1502 if (!sdata && local->_oper_channel_type == channel_type)
1503 return 0;
1504 break;
1505 case CHAN_MODE_UNDEFINED:
1506 break;
1507 }
1508
1509 if (sdata)
1510 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1511 old_oper_type = local->_oper_channel_type;
1512
1513 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1514 return -EBUSY;
1515
1516 old_oper = local->oper_channel;
1517 local->oper_channel = chan;
1518
1519 /* Update driver if changes were actually made. */
1520 if ((old_oper != local->oper_channel) ||
1521 (old_oper_type != local->_oper_channel_type))
1522 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1523
1524 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1525 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1526 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1527
1528 return 0;
1529 }
1530
1531 #ifdef CONFIG_PM
1532 static int ieee80211_suspend(struct wiphy *wiphy,
1533 struct cfg80211_wowlan *wowlan)
1534 {
1535 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1536 }
1537
1538 static int ieee80211_resume(struct wiphy *wiphy)
1539 {
1540 return __ieee80211_resume(wiphy_priv(wiphy));
1541 }
1542 #else
1543 #define ieee80211_suspend NULL
1544 #define ieee80211_resume NULL
1545 #endif
1546
1547 static int ieee80211_scan(struct wiphy *wiphy,
1548 struct net_device *dev,
1549 struct cfg80211_scan_request *req)
1550 {
1551 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1552
1553 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1554 case NL80211_IFTYPE_STATION:
1555 case NL80211_IFTYPE_ADHOC:
1556 case NL80211_IFTYPE_MESH_POINT:
1557 case NL80211_IFTYPE_P2P_CLIENT:
1558 break;
1559 case NL80211_IFTYPE_P2P_GO:
1560 if (sdata->local->ops->hw_scan)
1561 break;
1562 /*
1563 * FIXME: implement NoA while scanning in software,
1564 * for now fall through to allow scanning only when
1565 * beaconing hasn't been configured yet
1566 */
1567 case NL80211_IFTYPE_AP:
1568 if (sdata->u.ap.beacon)
1569 return -EOPNOTSUPP;
1570 break;
1571 default:
1572 return -EOPNOTSUPP;
1573 }
1574
1575 return ieee80211_request_scan(sdata, req);
1576 }
1577
1578 static int
1579 ieee80211_sched_scan_start(struct wiphy *wiphy,
1580 struct net_device *dev,
1581 struct cfg80211_sched_scan_request *req)
1582 {
1583 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1584
1585 if (!sdata->local->ops->sched_scan_start)
1586 return -EOPNOTSUPP;
1587
1588 return ieee80211_request_sched_scan_start(sdata, req);
1589 }
1590
1591 static int
1592 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1593 {
1594 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1595
1596 if (!sdata->local->ops->sched_scan_stop)
1597 return -EOPNOTSUPP;
1598
1599 return ieee80211_request_sched_scan_stop(sdata);
1600 }
1601
1602 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1603 struct cfg80211_auth_request *req)
1604 {
1605 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1606 }
1607
1608 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1609 struct cfg80211_assoc_request *req)
1610 {
1611 struct ieee80211_local *local = wiphy_priv(wiphy);
1612 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1613
1614 switch (ieee80211_get_channel_mode(local, sdata)) {
1615 case CHAN_MODE_HOPPING:
1616 return -EBUSY;
1617 case CHAN_MODE_FIXED:
1618 if (local->oper_channel == req->bss->channel)
1619 break;
1620 return -EBUSY;
1621 case CHAN_MODE_UNDEFINED:
1622 break;
1623 }
1624
1625 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1626 }
1627
1628 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1629 struct cfg80211_deauth_request *req)
1630 {
1631 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1632 }
1633
1634 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1635 struct cfg80211_disassoc_request *req)
1636 {
1637 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
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_vif *vif = &sdata->vif;
1872 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1873
1874 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1875 rssi_hyst == bss_conf->cqm_rssi_hyst)
1876 return 0;
1877
1878 bss_conf->cqm_rssi_thold = rssi_thold;
1879 bss_conf->cqm_rssi_hyst = rssi_hyst;
1880
1881 /* tell the driver upon association, unless already associated */
1882 if (sdata->u.mgd.associated &&
1883 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1884 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1885
1886 return 0;
1887 }
1888
1889 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1890 struct net_device *dev,
1891 const u8 *addr,
1892 const struct cfg80211_bitrate_mask *mask)
1893 {
1894 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1895 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1896 int i, ret;
1897
1898 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1899 ret = drv_set_bitrate_mask(local, sdata, mask);
1900 if (ret)
1901 return ret;
1902 }
1903
1904 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1905 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1906 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1907 sizeof(mask->control[i].mcs));
1908 }
1909
1910 return 0;
1911 }
1912
1913 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1914 struct net_device *dev,
1915 struct ieee80211_channel *chan,
1916 enum nl80211_channel_type chantype,
1917 unsigned int duration, u64 *cookie)
1918 {
1919 int ret;
1920 u32 random_cookie;
1921
1922 lockdep_assert_held(&local->mtx);
1923
1924 if (local->hw_roc_cookie)
1925 return -EBUSY;
1926 /* must be nonzero */
1927 random_cookie = random32() | 1;
1928
1929 *cookie = random_cookie;
1930 local->hw_roc_dev = dev;
1931 local->hw_roc_cookie = random_cookie;
1932 local->hw_roc_channel = chan;
1933 local->hw_roc_channel_type = chantype;
1934 local->hw_roc_duration = duration;
1935 ret = drv_remain_on_channel(local, chan, chantype, duration);
1936 if (ret) {
1937 local->hw_roc_channel = NULL;
1938 local->hw_roc_cookie = 0;
1939 }
1940
1941 return ret;
1942 }
1943
1944 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1945 struct net_device *dev,
1946 struct ieee80211_channel *chan,
1947 enum nl80211_channel_type channel_type,
1948 unsigned int duration,
1949 u64 *cookie)
1950 {
1951 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1952 struct ieee80211_local *local = sdata->local;
1953
1954 if (local->ops->remain_on_channel) {
1955 int ret;
1956
1957 mutex_lock(&local->mtx);
1958 ret = ieee80211_remain_on_channel_hw(local, dev,
1959 chan, channel_type,
1960 duration, cookie);
1961 local->hw_roc_for_tx = false;
1962 mutex_unlock(&local->mtx);
1963
1964 return ret;
1965 }
1966
1967 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1968 duration, cookie);
1969 }
1970
1971 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1972 u64 cookie)
1973 {
1974 int ret;
1975
1976 lockdep_assert_held(&local->mtx);
1977
1978 if (local->hw_roc_cookie != cookie)
1979 return -ENOENT;
1980
1981 ret = drv_cancel_remain_on_channel(local);
1982 if (ret)
1983 return ret;
1984
1985 local->hw_roc_cookie = 0;
1986 local->hw_roc_channel = NULL;
1987
1988 ieee80211_recalc_idle(local);
1989
1990 return 0;
1991 }
1992
1993 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1994 struct net_device *dev,
1995 u64 cookie)
1996 {
1997 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1998 struct ieee80211_local *local = sdata->local;
1999
2000 if (local->ops->cancel_remain_on_channel) {
2001 int ret;
2002
2003 mutex_lock(&local->mtx);
2004 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2005 mutex_unlock(&local->mtx);
2006
2007 return ret;
2008 }
2009
2010 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2011 }
2012
2013 static enum work_done_result
2014 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2015 {
2016 /*
2017 * Use the data embedded in the work struct for reporting
2018 * here so if the driver mangled the SKB before dropping
2019 * it (which is the only way we really should get here)
2020 * then we don't report mangled data.
2021 *
2022 * If there was no wait time, then by the time we get here
2023 * the driver will likely not have reported the status yet,
2024 * so in that case userspace will have to deal with it.
2025 */
2026
2027 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2028 cfg80211_mgmt_tx_status(wk->sdata->dev,
2029 (unsigned long) wk->offchan_tx.frame,
2030 wk->data, wk->data_len, false, GFP_KERNEL);
2031
2032 return WORK_DONE_DESTROY;
2033 }
2034
2035 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2036 struct ieee80211_channel *chan, bool offchan,
2037 enum nl80211_channel_type channel_type,
2038 bool channel_type_valid, unsigned int wait,
2039 const u8 *buf, size_t len, bool no_cck,
2040 bool dont_wait_for_ack, u64 *cookie)
2041 {
2042 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2043 struct ieee80211_local *local = sdata->local;
2044 struct sk_buff *skb;
2045 struct sta_info *sta;
2046 struct ieee80211_work *wk;
2047 const struct ieee80211_mgmt *mgmt = (void *)buf;
2048 u32 flags;
2049 bool is_offchan = false;
2050
2051 if (dont_wait_for_ack)
2052 flags = IEEE80211_TX_CTL_NO_ACK;
2053 else
2054 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2055 IEEE80211_TX_CTL_REQ_TX_STATUS;
2056
2057 /* Check that we are on the requested channel for transmission */
2058 if (chan != local->tmp_channel &&
2059 chan != local->oper_channel)
2060 is_offchan = true;
2061 if (channel_type_valid &&
2062 (channel_type != local->tmp_channel_type &&
2063 channel_type != local->_oper_channel_type))
2064 is_offchan = true;
2065
2066 if (chan == local->hw_roc_channel) {
2067 /* TODO: check channel type? */
2068 is_offchan = false;
2069 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2070 }
2071
2072 if (no_cck)
2073 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2074
2075 if (is_offchan && !offchan)
2076 return -EBUSY;
2077
2078 switch (sdata->vif.type) {
2079 case NL80211_IFTYPE_ADHOC:
2080 case NL80211_IFTYPE_AP:
2081 case NL80211_IFTYPE_AP_VLAN:
2082 case NL80211_IFTYPE_P2P_GO:
2083 case NL80211_IFTYPE_MESH_POINT:
2084 if (!ieee80211_is_action(mgmt->frame_control) ||
2085 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2086 break;
2087 rcu_read_lock();
2088 sta = sta_info_get(sdata, mgmt->da);
2089 rcu_read_unlock();
2090 if (!sta)
2091 return -ENOLINK;
2092 break;
2093 case NL80211_IFTYPE_STATION:
2094 case NL80211_IFTYPE_P2P_CLIENT:
2095 break;
2096 default:
2097 return -EOPNOTSUPP;
2098 }
2099
2100 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2101 if (!skb)
2102 return -ENOMEM;
2103 skb_reserve(skb, local->hw.extra_tx_headroom);
2104
2105 memcpy(skb_put(skb, len), buf, len);
2106
2107 IEEE80211_SKB_CB(skb)->flags = flags;
2108
2109 if (flags & IEEE80211_TX_CTL_TX_OFFCHAN)
2110 IEEE80211_SKB_CB(skb)->hw_queue =
2111 local->hw.offchannel_tx_hw_queue;
2112
2113 skb->dev = sdata->dev;
2114
2115 *cookie = (unsigned long) skb;
2116
2117 if (is_offchan && local->ops->remain_on_channel) {
2118 unsigned int duration;
2119 int ret;
2120
2121 mutex_lock(&local->mtx);
2122 /*
2123 * If the duration is zero, then the driver
2124 * wouldn't actually do anything. Set it to
2125 * 100 for now.
2126 *
2127 * TODO: cancel the off-channel operation
2128 * when we get the SKB's TX status and
2129 * the wait time was zero before.
2130 */
2131 duration = 100;
2132 if (wait)
2133 duration = wait;
2134 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2135 channel_type,
2136 duration, cookie);
2137 if (ret) {
2138 kfree_skb(skb);
2139 mutex_unlock(&local->mtx);
2140 return ret;
2141 }
2142
2143 local->hw_roc_for_tx = true;
2144 local->hw_roc_duration = wait;
2145
2146 /*
2147 * queue up frame for transmission after
2148 * ieee80211_ready_on_channel call
2149 */
2150
2151 /* modify cookie to prevent API mismatches */
2152 *cookie ^= 2;
2153 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2154 IEEE80211_SKB_CB(skb)->hw_queue =
2155 local->hw.offchannel_tx_hw_queue;
2156 local->hw_roc_skb = skb;
2157 local->hw_roc_skb_for_status = skb;
2158 mutex_unlock(&local->mtx);
2159
2160 return 0;
2161 }
2162
2163 /*
2164 * Can transmit right away if the channel was the
2165 * right one and there's no wait involved... If a
2166 * wait is involved, we might otherwise not be on
2167 * the right channel for long enough!
2168 */
2169 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2170 ieee80211_tx_skb(sdata, skb);
2171 return 0;
2172 }
2173
2174 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2175 if (!wk) {
2176 kfree_skb(skb);
2177 return -ENOMEM;
2178 }
2179
2180 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2181 wk->chan = chan;
2182 wk->chan_type = channel_type;
2183 wk->sdata = sdata;
2184 wk->done = ieee80211_offchan_tx_done;
2185 wk->offchan_tx.frame = skb;
2186 wk->offchan_tx.wait = wait;
2187 wk->data_len = len;
2188 memcpy(wk->data, buf, len);
2189
2190 ieee80211_add_work(wk);
2191 return 0;
2192 }
2193
2194 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2195 struct net_device *dev,
2196 u64 cookie)
2197 {
2198 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2199 struct ieee80211_local *local = sdata->local;
2200 struct ieee80211_work *wk;
2201 int ret = -ENOENT;
2202
2203 mutex_lock(&local->mtx);
2204
2205 if (local->ops->cancel_remain_on_channel) {
2206 cookie ^= 2;
2207 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2208
2209 if (ret == 0) {
2210 kfree_skb(local->hw_roc_skb);
2211 local->hw_roc_skb = NULL;
2212 local->hw_roc_skb_for_status = NULL;
2213 }
2214
2215 mutex_unlock(&local->mtx);
2216
2217 return ret;
2218 }
2219
2220 list_for_each_entry(wk, &local->work_list, list) {
2221 if (wk->sdata != sdata)
2222 continue;
2223
2224 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2225 continue;
2226
2227 if (cookie != (unsigned long) wk->offchan_tx.frame)
2228 continue;
2229
2230 wk->timeout = jiffies;
2231
2232 ieee80211_queue_work(&local->hw, &local->work_work);
2233 ret = 0;
2234 break;
2235 }
2236 mutex_unlock(&local->mtx);
2237
2238 return ret;
2239 }
2240
2241 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2242 struct net_device *dev,
2243 u16 frame_type, bool reg)
2244 {
2245 struct ieee80211_local *local = wiphy_priv(wiphy);
2246
2247 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2248 return;
2249
2250 if (reg)
2251 local->probe_req_reg++;
2252 else
2253 local->probe_req_reg--;
2254
2255 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2256 }
2257
2258 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2259 {
2260 struct ieee80211_local *local = wiphy_priv(wiphy);
2261
2262 if (local->started)
2263 return -EOPNOTSUPP;
2264
2265 return drv_set_antenna(local, tx_ant, rx_ant);
2266 }
2267
2268 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2269 {
2270 struct ieee80211_local *local = wiphy_priv(wiphy);
2271
2272 return drv_get_antenna(local, tx_ant, rx_ant);
2273 }
2274
2275 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2276 {
2277 struct ieee80211_local *local = wiphy_priv(wiphy);
2278
2279 return drv_set_ringparam(local, tx, rx);
2280 }
2281
2282 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2283 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2284 {
2285 struct ieee80211_local *local = wiphy_priv(wiphy);
2286
2287 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2288 }
2289
2290 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2291 struct net_device *dev,
2292 struct cfg80211_gtk_rekey_data *data)
2293 {
2294 struct ieee80211_local *local = wiphy_priv(wiphy);
2295 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2296
2297 if (!local->ops->set_rekey_data)
2298 return -EOPNOTSUPP;
2299
2300 drv_set_rekey_data(local, sdata, data);
2301
2302 return 0;
2303 }
2304
2305 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2306 {
2307 u8 *pos = (void *)skb_put(skb, 7);
2308
2309 *pos++ = WLAN_EID_EXT_CAPABILITY;
2310 *pos++ = 5; /* len */
2311 *pos++ = 0x0;
2312 *pos++ = 0x0;
2313 *pos++ = 0x0;
2314 *pos++ = 0x0;
2315 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2316 }
2317
2318 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2319 {
2320 struct ieee80211_local *local = sdata->local;
2321 u16 capab;
2322
2323 capab = 0;
2324 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2325 return capab;
2326
2327 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2328 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2329 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2330 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2331
2332 return capab;
2333 }
2334
2335 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2336 u8 *peer, u8 *bssid)
2337 {
2338 struct ieee80211_tdls_lnkie *lnkid;
2339
2340 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2341
2342 lnkid->ie_type = WLAN_EID_LINK_ID;
2343 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2344
2345 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2346 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2347 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2348 }
2349
2350 static int
2351 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2352 u8 *peer, u8 action_code, u8 dialog_token,
2353 u16 status_code, struct sk_buff *skb)
2354 {
2355 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2356 struct ieee80211_tdls_data *tf;
2357
2358 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2359
2360 memcpy(tf->da, peer, ETH_ALEN);
2361 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2362 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2363 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2364
2365 switch (action_code) {
2366 case WLAN_TDLS_SETUP_REQUEST:
2367 tf->category = WLAN_CATEGORY_TDLS;
2368 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2369
2370 skb_put(skb, sizeof(tf->u.setup_req));
2371 tf->u.setup_req.dialog_token = dialog_token;
2372 tf->u.setup_req.capability =
2373 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2374
2375 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2376 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2377 ieee80211_tdls_add_ext_capab(skb);
2378 break;
2379 case WLAN_TDLS_SETUP_RESPONSE:
2380 tf->category = WLAN_CATEGORY_TDLS;
2381 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2382
2383 skb_put(skb, sizeof(tf->u.setup_resp));
2384 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2385 tf->u.setup_resp.dialog_token = dialog_token;
2386 tf->u.setup_resp.capability =
2387 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2388
2389 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2390 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2391 ieee80211_tdls_add_ext_capab(skb);
2392 break;
2393 case WLAN_TDLS_SETUP_CONFIRM:
2394 tf->category = WLAN_CATEGORY_TDLS;
2395 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2396
2397 skb_put(skb, sizeof(tf->u.setup_cfm));
2398 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2399 tf->u.setup_cfm.dialog_token = dialog_token;
2400 break;
2401 case WLAN_TDLS_TEARDOWN:
2402 tf->category = WLAN_CATEGORY_TDLS;
2403 tf->action_code = WLAN_TDLS_TEARDOWN;
2404
2405 skb_put(skb, sizeof(tf->u.teardown));
2406 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2407 break;
2408 case WLAN_TDLS_DISCOVERY_REQUEST:
2409 tf->category = WLAN_CATEGORY_TDLS;
2410 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2411
2412 skb_put(skb, sizeof(tf->u.discover_req));
2413 tf->u.discover_req.dialog_token = dialog_token;
2414 break;
2415 default:
2416 return -EINVAL;
2417 }
2418
2419 return 0;
2420 }
2421
2422 static int
2423 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2424 u8 *peer, u8 action_code, u8 dialog_token,
2425 u16 status_code, struct sk_buff *skb)
2426 {
2427 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2428 struct ieee80211_mgmt *mgmt;
2429
2430 mgmt = (void *)skb_put(skb, 24);
2431 memset(mgmt, 0, 24);
2432 memcpy(mgmt->da, peer, ETH_ALEN);
2433 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2434 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2435
2436 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2437 IEEE80211_STYPE_ACTION);
2438
2439 switch (action_code) {
2440 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2441 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2442 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2443 mgmt->u.action.u.tdls_discover_resp.action_code =
2444 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2445 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2446 dialog_token;
2447 mgmt->u.action.u.tdls_discover_resp.capability =
2448 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2449
2450 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2451 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2452 ieee80211_tdls_add_ext_capab(skb);
2453 break;
2454 default:
2455 return -EINVAL;
2456 }
2457
2458 return 0;
2459 }
2460
2461 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2462 u8 *peer, u8 action_code, u8 dialog_token,
2463 u16 status_code, const u8 *extra_ies,
2464 size_t extra_ies_len)
2465 {
2466 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2467 struct ieee80211_local *local = sdata->local;
2468 struct ieee80211_tx_info *info;
2469 struct sk_buff *skb = NULL;
2470 bool send_direct;
2471 int ret;
2472
2473 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2474 return -ENOTSUPP;
2475
2476 /* make sure we are in managed mode, and associated */
2477 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2478 !sdata->u.mgd.associated)
2479 return -EINVAL;
2480
2481 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2482 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2483 #endif
2484
2485 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2486 max(sizeof(struct ieee80211_mgmt),
2487 sizeof(struct ieee80211_tdls_data)) +
2488 50 + /* supported rates */
2489 7 + /* ext capab */
2490 extra_ies_len +
2491 sizeof(struct ieee80211_tdls_lnkie));
2492 if (!skb)
2493 return -ENOMEM;
2494
2495 info = IEEE80211_SKB_CB(skb);
2496 skb_reserve(skb, local->hw.extra_tx_headroom);
2497
2498 switch (action_code) {
2499 case WLAN_TDLS_SETUP_REQUEST:
2500 case WLAN_TDLS_SETUP_RESPONSE:
2501 case WLAN_TDLS_SETUP_CONFIRM:
2502 case WLAN_TDLS_TEARDOWN:
2503 case WLAN_TDLS_DISCOVERY_REQUEST:
2504 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2505 action_code, dialog_token,
2506 status_code, skb);
2507 send_direct = false;
2508 break;
2509 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2510 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2511 dialog_token, status_code,
2512 skb);
2513 send_direct = true;
2514 break;
2515 default:
2516 ret = -ENOTSUPP;
2517 break;
2518 }
2519
2520 if (ret < 0)
2521 goto fail;
2522
2523 if (extra_ies_len)
2524 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2525
2526 /* the TDLS link IE is always added last */
2527 switch (action_code) {
2528 case WLAN_TDLS_SETUP_REQUEST:
2529 case WLAN_TDLS_SETUP_CONFIRM:
2530 case WLAN_TDLS_TEARDOWN:
2531 case WLAN_TDLS_DISCOVERY_REQUEST:
2532 /* we are the initiator */
2533 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2534 sdata->u.mgd.bssid);
2535 break;
2536 case WLAN_TDLS_SETUP_RESPONSE:
2537 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2538 /* we are the responder */
2539 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2540 sdata->u.mgd.bssid);
2541 break;
2542 default:
2543 ret = -ENOTSUPP;
2544 goto fail;
2545 }
2546
2547 if (send_direct) {
2548 ieee80211_tx_skb(sdata, skb);
2549 return 0;
2550 }
2551
2552 /*
2553 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2554 * we should default to AC_VI.
2555 */
2556 switch (action_code) {
2557 case WLAN_TDLS_SETUP_REQUEST:
2558 case WLAN_TDLS_SETUP_RESPONSE:
2559 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2560 skb->priority = 2;
2561 break;
2562 default:
2563 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2564 skb->priority = 5;
2565 break;
2566 }
2567
2568 /* disable bottom halves when entering the Tx path */
2569 local_bh_disable();
2570 ret = ieee80211_subif_start_xmit(skb, dev);
2571 local_bh_enable();
2572
2573 return ret;
2574
2575 fail:
2576 dev_kfree_skb(skb);
2577 return ret;
2578 }
2579
2580 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2581 u8 *peer, enum nl80211_tdls_operation oper)
2582 {
2583 struct sta_info *sta;
2584 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2585
2586 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2587 return -ENOTSUPP;
2588
2589 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2590 return -EINVAL;
2591
2592 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2593 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2594 #endif
2595
2596 switch (oper) {
2597 case NL80211_TDLS_ENABLE_LINK:
2598 rcu_read_lock();
2599 sta = sta_info_get(sdata, peer);
2600 if (!sta) {
2601 rcu_read_unlock();
2602 return -ENOLINK;
2603 }
2604
2605 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2606 rcu_read_unlock();
2607 break;
2608 case NL80211_TDLS_DISABLE_LINK:
2609 return sta_info_destroy_addr(sdata, peer);
2610 case NL80211_TDLS_TEARDOWN:
2611 case NL80211_TDLS_SETUP:
2612 case NL80211_TDLS_DISCOVERY_REQ:
2613 /* We don't support in-driver setup/teardown/discovery */
2614 return -ENOTSUPP;
2615 default:
2616 return -ENOTSUPP;
2617 }
2618
2619 return 0;
2620 }
2621
2622 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2623 const u8 *peer, u64 *cookie)
2624 {
2625 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2626 struct ieee80211_local *local = sdata->local;
2627 struct ieee80211_qos_hdr *nullfunc;
2628 struct sk_buff *skb;
2629 int size = sizeof(*nullfunc);
2630 __le16 fc;
2631 bool qos;
2632 struct ieee80211_tx_info *info;
2633 struct sta_info *sta;
2634
2635 rcu_read_lock();
2636 sta = sta_info_get(sdata, peer);
2637 if (sta) {
2638 qos = test_sta_flag(sta, WLAN_STA_WME);
2639 rcu_read_unlock();
2640 } else {
2641 rcu_read_unlock();
2642 return -ENOLINK;
2643 }
2644
2645 if (qos) {
2646 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2647 IEEE80211_STYPE_QOS_NULLFUNC |
2648 IEEE80211_FCTL_FROMDS);
2649 } else {
2650 size -= 2;
2651 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2652 IEEE80211_STYPE_NULLFUNC |
2653 IEEE80211_FCTL_FROMDS);
2654 }
2655
2656 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2657 if (!skb)
2658 return -ENOMEM;
2659
2660 skb->dev = dev;
2661
2662 skb_reserve(skb, local->hw.extra_tx_headroom);
2663
2664 nullfunc = (void *) skb_put(skb, size);
2665 nullfunc->frame_control = fc;
2666 nullfunc->duration_id = 0;
2667 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2668 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2669 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2670 nullfunc->seq_ctrl = 0;
2671
2672 info = IEEE80211_SKB_CB(skb);
2673
2674 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2675 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2676
2677 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2678 skb->priority = 7;
2679 if (qos)
2680 nullfunc->qos_ctrl = cpu_to_le16(7);
2681
2682 local_bh_disable();
2683 ieee80211_xmit(sdata, skb);
2684 local_bh_enable();
2685
2686 *cookie = (unsigned long) skb;
2687 return 0;
2688 }
2689
2690 static struct ieee80211_channel *
2691 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2692 enum nl80211_channel_type *type)
2693 {
2694 struct ieee80211_local *local = wiphy_priv(wiphy);
2695
2696 *type = local->_oper_channel_type;
2697 return local->oper_channel;
2698 }
2699
2700 #ifdef CONFIG_PM
2701 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2702 {
2703 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2704 }
2705 #endif
2706
2707 struct cfg80211_ops mac80211_config_ops = {
2708 .add_virtual_intf = ieee80211_add_iface,
2709 .del_virtual_intf = ieee80211_del_iface,
2710 .change_virtual_intf = ieee80211_change_iface,
2711 .add_key = ieee80211_add_key,
2712 .del_key = ieee80211_del_key,
2713 .get_key = ieee80211_get_key,
2714 .set_default_key = ieee80211_config_default_key,
2715 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2716 .start_ap = ieee80211_start_ap,
2717 .change_beacon = ieee80211_change_beacon,
2718 .stop_ap = ieee80211_stop_ap,
2719 .add_station = ieee80211_add_station,
2720 .del_station = ieee80211_del_station,
2721 .change_station = ieee80211_change_station,
2722 .get_station = ieee80211_get_station,
2723 .dump_station = ieee80211_dump_station,
2724 .dump_survey = ieee80211_dump_survey,
2725 #ifdef CONFIG_MAC80211_MESH
2726 .add_mpath = ieee80211_add_mpath,
2727 .del_mpath = ieee80211_del_mpath,
2728 .change_mpath = ieee80211_change_mpath,
2729 .get_mpath = ieee80211_get_mpath,
2730 .dump_mpath = ieee80211_dump_mpath,
2731 .update_mesh_config = ieee80211_update_mesh_config,
2732 .get_mesh_config = ieee80211_get_mesh_config,
2733 .join_mesh = ieee80211_join_mesh,
2734 .leave_mesh = ieee80211_leave_mesh,
2735 #endif
2736 .change_bss = ieee80211_change_bss,
2737 .set_txq_params = ieee80211_set_txq_params,
2738 .set_channel = ieee80211_set_channel,
2739 .suspend = ieee80211_suspend,
2740 .resume = ieee80211_resume,
2741 .scan = ieee80211_scan,
2742 .sched_scan_start = ieee80211_sched_scan_start,
2743 .sched_scan_stop = ieee80211_sched_scan_stop,
2744 .auth = ieee80211_auth,
2745 .assoc = ieee80211_assoc,
2746 .deauth = ieee80211_deauth,
2747 .disassoc = ieee80211_disassoc,
2748 .join_ibss = ieee80211_join_ibss,
2749 .leave_ibss = ieee80211_leave_ibss,
2750 .set_wiphy_params = ieee80211_set_wiphy_params,
2751 .set_tx_power = ieee80211_set_tx_power,
2752 .get_tx_power = ieee80211_get_tx_power,
2753 .set_wds_peer = ieee80211_set_wds_peer,
2754 .rfkill_poll = ieee80211_rfkill_poll,
2755 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2756 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2757 .set_power_mgmt = ieee80211_set_power_mgmt,
2758 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2759 .remain_on_channel = ieee80211_remain_on_channel,
2760 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2761 .mgmt_tx = ieee80211_mgmt_tx,
2762 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2763 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2764 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2765 .set_antenna = ieee80211_set_antenna,
2766 .get_antenna = ieee80211_get_antenna,
2767 .set_ringparam = ieee80211_set_ringparam,
2768 .get_ringparam = ieee80211_get_ringparam,
2769 .set_rekey_data = ieee80211_set_rekey_data,
2770 .tdls_oper = ieee80211_tdls_oper,
2771 .tdls_mgmt = ieee80211_tdls_mgmt,
2772 .probe_client = ieee80211_probe_client,
2773 .get_channel = ieee80211_wiphy_get_channel,
2774 .set_noack_map = ieee80211_set_noack_map,
2775 #ifdef CONFIG_PM
2776 .set_wakeup = ieee80211_set_wakeup,
2777 #endif
2778 };
Linux kernel - Deliverables
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