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mac80211: support GTK rekey offload
[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 <net/cfg80211.h>
16 #include "ieee80211_i.h"
17 #include "driver-ops.h"
18 #include "cfg.h"
19 #include "rate.h"
20 #include "mesh.h"
21
22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
23 enum nl80211_iftype type,
24 u32 *flags,
25 struct vif_params *params)
26 {
27 struct ieee80211_local *local = wiphy_priv(wiphy);
28 struct net_device *dev;
29 struct ieee80211_sub_if_data *sdata;
30 int err;
31
32 err = ieee80211_if_add(local, name, &dev, type, params);
33 if (err)
34 return ERR_PTR(err);
35
36 if (type == NL80211_IFTYPE_MONITOR && flags) {
37 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
38 sdata->u.mntr_flags = *flags;
39 }
40
41 return dev;
42 }
43
44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
45 {
46 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
47
48 return 0;
49 }
50
51 static int ieee80211_change_iface(struct wiphy *wiphy,
52 struct net_device *dev,
53 enum nl80211_iftype type, u32 *flags,
54 struct vif_params *params)
55 {
56 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
57 int ret;
58
59 ret = ieee80211_if_change_type(sdata, type);
60 if (ret)
61 return ret;
62
63 if (type == NL80211_IFTYPE_AP_VLAN &&
64 params && params->use_4addr == 0)
65 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
66 else if (type == NL80211_IFTYPE_STATION &&
67 params && params->use_4addr >= 0)
68 sdata->u.mgd.use_4addr = params->use_4addr;
69
70 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
71 struct ieee80211_local *local = sdata->local;
72
73 if (ieee80211_sdata_running(sdata)) {
74 /*
75 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
76 * changed while the interface is up.
77 * Else we would need to add a lot of cruft
78 * to update everything:
79 * cooked_mntrs, monitor and all fif_* counters
80 * reconfigure hardware
81 */
82 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
83 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
84 return -EBUSY;
85
86 ieee80211_adjust_monitor_flags(sdata, -1);
87 sdata->u.mntr_flags = *flags;
88 ieee80211_adjust_monitor_flags(sdata, 1);
89
90 ieee80211_configure_filter(local);
91 } else {
92 /*
93 * Because the interface is down, ieee80211_do_stop
94 * and ieee80211_do_open take care of "everything"
95 * mentioned in the comment above.
96 */
97 sdata->u.mntr_flags = *flags;
98 }
99 }
100
101 return 0;
102 }
103
104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
105 u8 key_idx, bool pairwise, const u8 *mac_addr,
106 struct key_params *params)
107 {
108 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
109 struct sta_info *sta = NULL;
110 struct ieee80211_key *key;
111 int err;
112
113 if (!ieee80211_sdata_running(sdata))
114 return -ENETDOWN;
115
116 /* reject WEP and TKIP keys if WEP failed to initialize */
117 switch (params->cipher) {
118 case WLAN_CIPHER_SUITE_WEP40:
119 case WLAN_CIPHER_SUITE_TKIP:
120 case WLAN_CIPHER_SUITE_WEP104:
121 if (IS_ERR(sdata->local->wep_tx_tfm))
122 return -EINVAL;
123 break;
124 default:
125 break;
126 }
127
128 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
129 params->key, params->seq_len, params->seq);
130 if (IS_ERR(key))
131 return PTR_ERR(key);
132
133 if (pairwise)
134 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
135
136 mutex_lock(&sdata->local->sta_mtx);
137
138 if (mac_addr) {
139 if (ieee80211_vif_is_mesh(&sdata->vif))
140 sta = sta_info_get(sdata, mac_addr);
141 else
142 sta = sta_info_get_bss(sdata, mac_addr);
143 if (!sta) {
144 ieee80211_key_free(sdata->local, key);
145 err = -ENOENT;
146 goto out_unlock;
147 }
148 }
149
150 err = ieee80211_key_link(key, sdata, sta);
151 if (err)
152 ieee80211_key_free(sdata->local, key);
153
154 out_unlock:
155 mutex_unlock(&sdata->local->sta_mtx);
156
157 return err;
158 }
159
160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
161 u8 key_idx, bool pairwise, const u8 *mac_addr)
162 {
163 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
164 struct ieee80211_local *local = sdata->local;
165 struct sta_info *sta;
166 struct ieee80211_key *key = NULL;
167 int ret;
168
169 mutex_lock(&local->sta_mtx);
170 mutex_lock(&local->key_mtx);
171
172 if (mac_addr) {
173 ret = -ENOENT;
174
175 sta = sta_info_get_bss(sdata, mac_addr);
176 if (!sta)
177 goto out_unlock;
178
179 if (pairwise)
180 key = key_mtx_dereference(local, sta->ptk);
181 else
182 key = key_mtx_dereference(local, sta->gtk[key_idx]);
183 } else
184 key = key_mtx_dereference(local, sdata->keys[key_idx]);
185
186 if (!key) {
187 ret = -ENOENT;
188 goto out_unlock;
189 }
190
191 __ieee80211_key_free(key);
192
193 ret = 0;
194 out_unlock:
195 mutex_unlock(&local->key_mtx);
196 mutex_unlock(&local->sta_mtx);
197
198 return ret;
199 }
200
201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
202 u8 key_idx, bool pairwise, const u8 *mac_addr,
203 void *cookie,
204 void (*callback)(void *cookie,
205 struct key_params *params))
206 {
207 struct ieee80211_sub_if_data *sdata;
208 struct sta_info *sta = NULL;
209 u8 seq[6] = {0};
210 struct key_params params;
211 struct ieee80211_key *key = NULL;
212 u32 iv32;
213 u16 iv16;
214 int err = -ENOENT;
215
216 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
217
218 rcu_read_lock();
219
220 if (mac_addr) {
221 sta = sta_info_get_bss(sdata, mac_addr);
222 if (!sta)
223 goto out;
224
225 if (pairwise)
226 key = rcu_dereference(sta->ptk);
227 else if (key_idx < NUM_DEFAULT_KEYS)
228 key = rcu_dereference(sta->gtk[key_idx]);
229 } else
230 key = rcu_dereference(sdata->keys[key_idx]);
231
232 if (!key)
233 goto out;
234
235 memset(&params, 0, sizeof(params));
236
237 params.cipher = key->conf.cipher;
238
239 switch (key->conf.cipher) {
240 case WLAN_CIPHER_SUITE_TKIP:
241 iv32 = key->u.tkip.tx.iv32;
242 iv16 = key->u.tkip.tx.iv16;
243
244 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
245 drv_get_tkip_seq(sdata->local,
246 key->conf.hw_key_idx,
247 &iv32, &iv16);
248
249 seq[0] = iv16 & 0xff;
250 seq[1] = (iv16 >> 8) & 0xff;
251 seq[2] = iv32 & 0xff;
252 seq[3] = (iv32 >> 8) & 0xff;
253 seq[4] = (iv32 >> 16) & 0xff;
254 seq[5] = (iv32 >> 24) & 0xff;
255 params.seq = seq;
256 params.seq_len = 6;
257 break;
258 case WLAN_CIPHER_SUITE_CCMP:
259 seq[0] = key->u.ccmp.tx_pn[5];
260 seq[1] = key->u.ccmp.tx_pn[4];
261 seq[2] = key->u.ccmp.tx_pn[3];
262 seq[3] = key->u.ccmp.tx_pn[2];
263 seq[4] = key->u.ccmp.tx_pn[1];
264 seq[5] = key->u.ccmp.tx_pn[0];
265 params.seq = seq;
266 params.seq_len = 6;
267 break;
268 case WLAN_CIPHER_SUITE_AES_CMAC:
269 seq[0] = key->u.aes_cmac.tx_pn[5];
270 seq[1] = key->u.aes_cmac.tx_pn[4];
271 seq[2] = key->u.aes_cmac.tx_pn[3];
272 seq[3] = key->u.aes_cmac.tx_pn[2];
273 seq[4] = key->u.aes_cmac.tx_pn[1];
274 seq[5] = key->u.aes_cmac.tx_pn[0];
275 params.seq = seq;
276 params.seq_len = 6;
277 break;
278 }
279
280 params.key = key->conf.key;
281 params.key_len = key->conf.keylen;
282
283 callback(cookie, &params);
284 err = 0;
285
286 out:
287 rcu_read_unlock();
288 return err;
289 }
290
291 static int ieee80211_config_default_key(struct wiphy *wiphy,
292 struct net_device *dev,
293 u8 key_idx, bool uni,
294 bool multi)
295 {
296 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
297
298 ieee80211_set_default_key(sdata, key_idx, uni, multi);
299
300 return 0;
301 }
302
303 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
304 struct net_device *dev,
305 u8 key_idx)
306 {
307 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
308
309 ieee80211_set_default_mgmt_key(sdata, key_idx);
310
311 return 0;
312 }
313
314 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
315 {
316 if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
317 struct ieee80211_supported_band *sband;
318 sband = sta->local->hw.wiphy->bands[
319 sta->local->hw.conf.channel->band];
320 rate->legacy = sband->bitrates[idx].bitrate;
321 } else
322 rate->mcs = idx;
323 }
324
325 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
326 {
327 struct ieee80211_sub_if_data *sdata = sta->sdata;
328 struct timespec uptime;
329
330 sinfo->generation = sdata->local->sta_generation;
331
332 sinfo->filled = STATION_INFO_INACTIVE_TIME |
333 STATION_INFO_RX_BYTES |
334 STATION_INFO_TX_BYTES |
335 STATION_INFO_RX_PACKETS |
336 STATION_INFO_TX_PACKETS |
337 STATION_INFO_TX_RETRIES |
338 STATION_INFO_TX_FAILED |
339 STATION_INFO_TX_BITRATE |
340 STATION_INFO_RX_BITRATE |
341 STATION_INFO_RX_DROP_MISC |
342 STATION_INFO_BSS_PARAM |
343 STATION_INFO_CONNECTED_TIME;
344
345 do_posix_clock_monotonic_gettime(&uptime);
346 sinfo->connected_time = uptime.tv_sec - sta->last_connected;
347
348 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
349 sinfo->rx_bytes = sta->rx_bytes;
350 sinfo->tx_bytes = sta->tx_bytes;
351 sinfo->rx_packets = sta->rx_packets;
352 sinfo->tx_packets = sta->tx_packets;
353 sinfo->tx_retries = sta->tx_retry_count;
354 sinfo->tx_failed = sta->tx_retry_failed;
355 sinfo->rx_dropped_misc = sta->rx_dropped;
356
357 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
358 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
359 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
360 sinfo->signal = (s8)sta->last_signal;
361 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
362 }
363
364 sinfo->txrate.flags = 0;
365 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
366 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
367 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
368 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
369 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
370 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
371 rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
372
373 sinfo->rxrate.flags = 0;
374 if (sta->last_rx_rate_flag & RX_FLAG_HT)
375 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
376 if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
377 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
378 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
379 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
380 rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
381
382 if (ieee80211_vif_is_mesh(&sdata->vif)) {
383 #ifdef CONFIG_MAC80211_MESH
384 sinfo->filled |= STATION_INFO_LLID |
385 STATION_INFO_PLID |
386 STATION_INFO_PLINK_STATE;
387
388 sinfo->llid = le16_to_cpu(sta->llid);
389 sinfo->plid = le16_to_cpu(sta->plid);
390 sinfo->plink_state = sta->plink_state;
391 #endif
392 }
393
394 sinfo->bss_param.flags = 0;
395 if (sdata->vif.bss_conf.use_cts_prot)
396 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
397 if (sdata->vif.bss_conf.use_short_preamble)
398 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
399 if (sdata->vif.bss_conf.use_short_slot)
400 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
401 sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
402 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
403 }
404
405
406 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
407 int idx, u8 *mac, struct station_info *sinfo)
408 {
409 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
410 struct sta_info *sta;
411 int ret = -ENOENT;
412
413 rcu_read_lock();
414
415 sta = sta_info_get_by_idx(sdata, idx);
416 if (sta) {
417 ret = 0;
418 memcpy(mac, sta->sta.addr, ETH_ALEN);
419 sta_set_sinfo(sta, sinfo);
420 }
421
422 rcu_read_unlock();
423
424 return ret;
425 }
426
427 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
428 int idx, struct survey_info *survey)
429 {
430 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
431
432 return drv_get_survey(local, idx, survey);
433 }
434
435 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
436 u8 *mac, struct station_info *sinfo)
437 {
438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
439 struct sta_info *sta;
440 int ret = -ENOENT;
441
442 rcu_read_lock();
443
444 sta = sta_info_get_bss(sdata, mac);
445 if (sta) {
446 ret = 0;
447 sta_set_sinfo(sta, sinfo);
448 }
449
450 rcu_read_unlock();
451
452 return ret;
453 }
454
455 /*
456 * This handles both adding a beacon and setting new beacon info
457 */
458 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
459 struct beacon_parameters *params)
460 {
461 struct beacon_data *new, *old;
462 int new_head_len, new_tail_len;
463 int size;
464 int err = -EINVAL;
465
466 old = rtnl_dereference(sdata->u.ap.beacon);
467
468 /* head must not be zero-length */
469 if (params->head && !params->head_len)
470 return -EINVAL;
471
472 /*
473 * This is a kludge. beacon interval should really be part
474 * of the beacon information.
475 */
476 if (params->interval &&
477 (sdata->vif.bss_conf.beacon_int != params->interval)) {
478 sdata->vif.bss_conf.beacon_int = params->interval;
479 ieee80211_bss_info_change_notify(sdata,
480 BSS_CHANGED_BEACON_INT);
481 }
482
483 /* Need to have a beacon head if we don't have one yet */
484 if (!params->head && !old)
485 return err;
486
487 /* sorry, no way to start beaconing without dtim period */
488 if (!params->dtim_period && !old)
489 return err;
490
491 /* new or old head? */
492 if (params->head)
493 new_head_len = params->head_len;
494 else
495 new_head_len = old->head_len;
496
497 /* new or old tail? */
498 if (params->tail || !old)
499 /* params->tail_len will be zero for !params->tail */
500 new_tail_len = params->tail_len;
501 else
502 new_tail_len = old->tail_len;
503
504 size = sizeof(*new) + new_head_len + new_tail_len;
505
506 new = kzalloc(size, GFP_KERNEL);
507 if (!new)
508 return -ENOMEM;
509
510 /* start filling the new info now */
511
512 /* new or old dtim period? */
513 if (params->dtim_period)
514 new->dtim_period = params->dtim_period;
515 else
516 new->dtim_period = old->dtim_period;
517
518 /*
519 * pointers go into the block we allocated,
520 * memory is | beacon_data | head | tail |
521 */
522 new->head = ((u8 *) new) + sizeof(*new);
523 new->tail = new->head + new_head_len;
524 new->head_len = new_head_len;
525 new->tail_len = new_tail_len;
526
527 /* copy in head */
528 if (params->head)
529 memcpy(new->head, params->head, new_head_len);
530 else
531 memcpy(new->head, old->head, new_head_len);
532
533 /* copy in optional tail */
534 if (params->tail)
535 memcpy(new->tail, params->tail, new_tail_len);
536 else
537 if (old)
538 memcpy(new->tail, old->tail, new_tail_len);
539
540 sdata->vif.bss_conf.dtim_period = new->dtim_period;
541
542 rcu_assign_pointer(sdata->u.ap.beacon, new);
543
544 synchronize_rcu();
545
546 kfree(old);
547
548 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
549 BSS_CHANGED_BEACON);
550 return 0;
551 }
552
553 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
554 struct beacon_parameters *params)
555 {
556 struct ieee80211_sub_if_data *sdata;
557 struct beacon_data *old;
558
559 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
560
561 old = rtnl_dereference(sdata->u.ap.beacon);
562 if (old)
563 return -EALREADY;
564
565 return ieee80211_config_beacon(sdata, params);
566 }
567
568 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
569 struct beacon_parameters *params)
570 {
571 struct ieee80211_sub_if_data *sdata;
572 struct beacon_data *old;
573
574 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
575
576 old = rtnl_dereference(sdata->u.ap.beacon);
577 if (!old)
578 return -ENOENT;
579
580 return ieee80211_config_beacon(sdata, params);
581 }
582
583 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
584 {
585 struct ieee80211_sub_if_data *sdata;
586 struct beacon_data *old;
587
588 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
589
590 old = rtnl_dereference(sdata->u.ap.beacon);
591 if (!old)
592 return -ENOENT;
593
594 rcu_assign_pointer(sdata->u.ap.beacon, NULL);
595 synchronize_rcu();
596 kfree(old);
597
598 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
599 return 0;
600 }
601
602 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
603 struct iapp_layer2_update {
604 u8 da[ETH_ALEN]; /* broadcast */
605 u8 sa[ETH_ALEN]; /* STA addr */
606 __be16 len; /* 6 */
607 u8 dsap; /* 0 */
608 u8 ssap; /* 0 */
609 u8 control;
610 u8 xid_info[3];
611 } __packed;
612
613 static void ieee80211_send_layer2_update(struct sta_info *sta)
614 {
615 struct iapp_layer2_update *msg;
616 struct sk_buff *skb;
617
618 /* Send Level 2 Update Frame to update forwarding tables in layer 2
619 * bridge devices */
620
621 skb = dev_alloc_skb(sizeof(*msg));
622 if (!skb)
623 return;
624 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
625
626 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
627 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
628
629 memset(msg->da, 0xff, ETH_ALEN);
630 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
631 msg->len = htons(6);
632 msg->dsap = 0;
633 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
634 msg->control = 0xaf; /* XID response lsb.1111F101.
635 * F=0 (no poll command; unsolicited frame) */
636 msg->xid_info[0] = 0x81; /* XID format identifier */
637 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
638 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
639
640 skb->dev = sta->sdata->dev;
641 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
642 memset(skb->cb, 0, sizeof(skb->cb));
643 netif_rx_ni(skb);
644 }
645
646 static void sta_apply_parameters(struct ieee80211_local *local,
647 struct sta_info *sta,
648 struct station_parameters *params)
649 {
650 unsigned long flags;
651 u32 rates;
652 int i, j;
653 struct ieee80211_supported_band *sband;
654 struct ieee80211_sub_if_data *sdata = sta->sdata;
655 u32 mask, set;
656
657 sband = local->hw.wiphy->bands[local->oper_channel->band];
658
659 spin_lock_irqsave(&sta->flaglock, flags);
660 mask = params->sta_flags_mask;
661 set = params->sta_flags_set;
662
663 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
664 sta->flags &= ~WLAN_STA_AUTHORIZED;
665 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
666 sta->flags |= WLAN_STA_AUTHORIZED;
667 }
668
669 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
670 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
671 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
672 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
673 }
674
675 if (mask & BIT(NL80211_STA_FLAG_WME)) {
676 sta->flags &= ~WLAN_STA_WME;
677 sta->sta.wme = false;
678 if (set & BIT(NL80211_STA_FLAG_WME)) {
679 sta->flags |= WLAN_STA_WME;
680 sta->sta.wme = true;
681 }
682 }
683
684 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
685 sta->flags &= ~WLAN_STA_MFP;
686 if (set & BIT(NL80211_STA_FLAG_MFP))
687 sta->flags |= WLAN_STA_MFP;
688 }
689
690 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
691 sta->flags &= ~WLAN_STA_AUTH;
692 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
693 sta->flags |= WLAN_STA_AUTH;
694 }
695 spin_unlock_irqrestore(&sta->flaglock, flags);
696
697 /*
698 * cfg80211 validates this (1-2007) and allows setting the AID
699 * only when creating a new station entry
700 */
701 if (params->aid)
702 sta->sta.aid = params->aid;
703
704 /*
705 * FIXME: updating the following information is racy when this
706 * function is called from ieee80211_change_station().
707 * However, all this information should be static so
708 * maybe we should just reject attemps to change it.
709 */
710
711 if (params->listen_interval >= 0)
712 sta->listen_interval = params->listen_interval;
713
714 if (params->supported_rates) {
715 rates = 0;
716
717 for (i = 0; i < params->supported_rates_len; i++) {
718 int rate = (params->supported_rates[i] & 0x7f) * 5;
719 for (j = 0; j < sband->n_bitrates; j++) {
720 if (sband->bitrates[j].bitrate == rate)
721 rates |= BIT(j);
722 }
723 }
724 sta->sta.supp_rates[local->oper_channel->band] = rates;
725 }
726
727 if (params->ht_capa)
728 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
729 params->ht_capa,
730 &sta->sta.ht_cap);
731
732 if (ieee80211_vif_is_mesh(&sdata->vif)) {
733 #ifdef CONFIG_MAC80211_MESH
734 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
735 switch (params->plink_state) {
736 case NL80211_PLINK_LISTEN:
737 case NL80211_PLINK_ESTAB:
738 case NL80211_PLINK_BLOCKED:
739 sta->plink_state = params->plink_state;
740 break;
741 default:
742 /* nothing */
743 break;
744 }
745 else
746 switch (params->plink_action) {
747 case PLINK_ACTION_OPEN:
748 mesh_plink_open(sta);
749 break;
750 case PLINK_ACTION_BLOCK:
751 mesh_plink_block(sta);
752 break;
753 }
754 #endif
755 }
756 }
757
758 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
759 u8 *mac, struct station_parameters *params)
760 {
761 struct ieee80211_local *local = wiphy_priv(wiphy);
762 struct sta_info *sta;
763 struct ieee80211_sub_if_data *sdata;
764 int err;
765 int layer2_update;
766
767 if (params->vlan) {
768 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
769
770 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
771 sdata->vif.type != NL80211_IFTYPE_AP)
772 return -EINVAL;
773 } else
774 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
775
776 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
777 return -EINVAL;
778
779 if (is_multicast_ether_addr(mac))
780 return -EINVAL;
781
782 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
783 if (!sta)
784 return -ENOMEM;
785
786 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
787
788 sta_apply_parameters(local, sta, params);
789
790 rate_control_rate_init(sta);
791
792 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
793 sdata->vif.type == NL80211_IFTYPE_AP;
794
795 err = sta_info_insert_rcu(sta);
796 if (err) {
797 rcu_read_unlock();
798 return err;
799 }
800
801 if (layer2_update)
802 ieee80211_send_layer2_update(sta);
803
804 rcu_read_unlock();
805
806 return 0;
807 }
808
809 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
810 u8 *mac)
811 {
812 struct ieee80211_local *local = wiphy_priv(wiphy);
813 struct ieee80211_sub_if_data *sdata;
814
815 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
816
817 if (mac)
818 return sta_info_destroy_addr_bss(sdata, mac);
819
820 sta_info_flush(local, sdata);
821 return 0;
822 }
823
824 static int ieee80211_change_station(struct wiphy *wiphy,
825 struct net_device *dev,
826 u8 *mac,
827 struct station_parameters *params)
828 {
829 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
830 struct ieee80211_local *local = wiphy_priv(wiphy);
831 struct sta_info *sta;
832 struct ieee80211_sub_if_data *vlansdata;
833
834 rcu_read_lock();
835
836 sta = sta_info_get_bss(sdata, mac);
837 if (!sta) {
838 rcu_read_unlock();
839 return -ENOENT;
840 }
841
842 if (params->vlan && params->vlan != sta->sdata->dev) {
843 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
844
845 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
846 vlansdata->vif.type != NL80211_IFTYPE_AP) {
847 rcu_read_unlock();
848 return -EINVAL;
849 }
850
851 if (params->vlan->ieee80211_ptr->use_4addr) {
852 if (vlansdata->u.vlan.sta) {
853 rcu_read_unlock();
854 return -EBUSY;
855 }
856
857 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
858 }
859
860 sta->sdata = vlansdata;
861 ieee80211_send_layer2_update(sta);
862 }
863
864 sta_apply_parameters(local, sta, params);
865
866 rcu_read_unlock();
867
868 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
869 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
870 ieee80211_recalc_ps(local, -1);
871
872 return 0;
873 }
874
875 #ifdef CONFIG_MAC80211_MESH
876 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
877 u8 *dst, u8 *next_hop)
878 {
879 struct ieee80211_sub_if_data *sdata;
880 struct mesh_path *mpath;
881 struct sta_info *sta;
882 int err;
883
884 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
885
886 rcu_read_lock();
887 sta = sta_info_get(sdata, next_hop);
888 if (!sta) {
889 rcu_read_unlock();
890 return -ENOENT;
891 }
892
893 err = mesh_path_add(dst, sdata);
894 if (err) {
895 rcu_read_unlock();
896 return err;
897 }
898
899 mpath = mesh_path_lookup(dst, sdata);
900 if (!mpath) {
901 rcu_read_unlock();
902 return -ENXIO;
903 }
904 mesh_path_fix_nexthop(mpath, sta);
905
906 rcu_read_unlock();
907 return 0;
908 }
909
910 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
911 u8 *dst)
912 {
913 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
914
915 if (dst)
916 return mesh_path_del(dst, sdata);
917
918 mesh_path_flush(sdata);
919 return 0;
920 }
921
922 static int ieee80211_change_mpath(struct wiphy *wiphy,
923 struct net_device *dev,
924 u8 *dst, u8 *next_hop)
925 {
926 struct ieee80211_sub_if_data *sdata;
927 struct mesh_path *mpath;
928 struct sta_info *sta;
929
930 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
931
932 rcu_read_lock();
933
934 sta = sta_info_get(sdata, next_hop);
935 if (!sta) {
936 rcu_read_unlock();
937 return -ENOENT;
938 }
939
940 mpath = mesh_path_lookup(dst, sdata);
941 if (!mpath) {
942 rcu_read_unlock();
943 return -ENOENT;
944 }
945
946 mesh_path_fix_nexthop(mpath, sta);
947
948 rcu_read_unlock();
949 return 0;
950 }
951
952 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
953 struct mpath_info *pinfo)
954 {
955 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
956
957 if (next_hop_sta)
958 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
959 else
960 memset(next_hop, 0, ETH_ALEN);
961
962 pinfo->generation = mesh_paths_generation;
963
964 pinfo->filled = MPATH_INFO_FRAME_QLEN |
965 MPATH_INFO_SN |
966 MPATH_INFO_METRIC |
967 MPATH_INFO_EXPTIME |
968 MPATH_INFO_DISCOVERY_TIMEOUT |
969 MPATH_INFO_DISCOVERY_RETRIES |
970 MPATH_INFO_FLAGS;
971
972 pinfo->frame_qlen = mpath->frame_queue.qlen;
973 pinfo->sn = mpath->sn;
974 pinfo->metric = mpath->metric;
975 if (time_before(jiffies, mpath->exp_time))
976 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
977 pinfo->discovery_timeout =
978 jiffies_to_msecs(mpath->discovery_timeout);
979 pinfo->discovery_retries = mpath->discovery_retries;
980 pinfo->flags = 0;
981 if (mpath->flags & MESH_PATH_ACTIVE)
982 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
983 if (mpath->flags & MESH_PATH_RESOLVING)
984 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
985 if (mpath->flags & MESH_PATH_SN_VALID)
986 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
987 if (mpath->flags & MESH_PATH_FIXED)
988 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
989 if (mpath->flags & MESH_PATH_RESOLVING)
990 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
991
992 pinfo->flags = mpath->flags;
993 }
994
995 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
996 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
997
998 {
999 struct ieee80211_sub_if_data *sdata;
1000 struct mesh_path *mpath;
1001
1002 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1003
1004 rcu_read_lock();
1005 mpath = mesh_path_lookup(dst, sdata);
1006 if (!mpath) {
1007 rcu_read_unlock();
1008 return -ENOENT;
1009 }
1010 memcpy(dst, mpath->dst, ETH_ALEN);
1011 mpath_set_pinfo(mpath, next_hop, pinfo);
1012 rcu_read_unlock();
1013 return 0;
1014 }
1015
1016 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1017 int idx, u8 *dst, u8 *next_hop,
1018 struct mpath_info *pinfo)
1019 {
1020 struct ieee80211_sub_if_data *sdata;
1021 struct mesh_path *mpath;
1022
1023 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1024
1025 rcu_read_lock();
1026 mpath = mesh_path_lookup_by_idx(idx, sdata);
1027 if (!mpath) {
1028 rcu_read_unlock();
1029 return -ENOENT;
1030 }
1031 memcpy(dst, mpath->dst, ETH_ALEN);
1032 mpath_set_pinfo(mpath, next_hop, pinfo);
1033 rcu_read_unlock();
1034 return 0;
1035 }
1036
1037 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1038 struct net_device *dev,
1039 struct mesh_config *conf)
1040 {
1041 struct ieee80211_sub_if_data *sdata;
1042 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1043
1044 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1045 return 0;
1046 }
1047
1048 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1049 {
1050 return (mask >> (parm-1)) & 0x1;
1051 }
1052
1053 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1054 const struct mesh_setup *setup)
1055 {
1056 u8 *new_ie;
1057 const u8 *old_ie;
1058
1059 /* allocate information elements */
1060 new_ie = NULL;
1061 old_ie = ifmsh->ie;
1062
1063 if (setup->ie_len) {
1064 new_ie = kmemdup(setup->ie, setup->ie_len,
1065 GFP_KERNEL);
1066 if (!new_ie)
1067 return -ENOMEM;
1068 }
1069 ifmsh->ie_len = setup->ie_len;
1070 ifmsh->ie = new_ie;
1071 kfree(old_ie);
1072
1073 /* now copy the rest of the setup parameters */
1074 ifmsh->mesh_id_len = setup->mesh_id_len;
1075 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1076 ifmsh->mesh_pp_id = setup->path_sel_proto;
1077 ifmsh->mesh_pm_id = setup->path_metric;
1078 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1079 if (setup->is_authenticated)
1080 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1081 if (setup->is_secure)
1082 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1083
1084 return 0;
1085 }
1086
1087 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1088 struct net_device *dev, u32 mask,
1089 const struct mesh_config *nconf)
1090 {
1091 struct mesh_config *conf;
1092 struct ieee80211_sub_if_data *sdata;
1093 struct ieee80211_if_mesh *ifmsh;
1094
1095 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1096 ifmsh = &sdata->u.mesh;
1097
1098 /* Set the config options which we are interested in setting */
1099 conf = &(sdata->u.mesh.mshcfg);
1100 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1101 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1102 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1103 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1104 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1105 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1106 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1107 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1108 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1109 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1110 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1111 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1112 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1113 conf->dot11MeshTTL = nconf->element_ttl;
1114 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1115 conf->auto_open_plinks = nconf->auto_open_plinks;
1116 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1117 conf->dot11MeshHWMPmaxPREQretries =
1118 nconf->dot11MeshHWMPmaxPREQretries;
1119 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1120 conf->path_refresh_time = nconf->path_refresh_time;
1121 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1122 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1123 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1124 conf->dot11MeshHWMPactivePathTimeout =
1125 nconf->dot11MeshHWMPactivePathTimeout;
1126 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1127 conf->dot11MeshHWMPpreqMinInterval =
1128 nconf->dot11MeshHWMPpreqMinInterval;
1129 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1130 mask))
1131 conf->dot11MeshHWMPnetDiameterTraversalTime =
1132 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1133 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1134 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1135 ieee80211_mesh_root_setup(ifmsh);
1136 }
1137 return 0;
1138 }
1139
1140 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1141 const struct mesh_config *conf,
1142 const struct mesh_setup *setup)
1143 {
1144 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1145 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1146 int err;
1147
1148 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1149 err = copy_mesh_setup(ifmsh, setup);
1150 if (err)
1151 return err;
1152 ieee80211_start_mesh(sdata);
1153
1154 return 0;
1155 }
1156
1157 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1158 {
1159 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1160
1161 ieee80211_stop_mesh(sdata);
1162
1163 return 0;
1164 }
1165 #endif
1166
1167 static int ieee80211_change_bss(struct wiphy *wiphy,
1168 struct net_device *dev,
1169 struct bss_parameters *params)
1170 {
1171 struct ieee80211_sub_if_data *sdata;
1172 u32 changed = 0;
1173
1174 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176 if (params->use_cts_prot >= 0) {
1177 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1178 changed |= BSS_CHANGED_ERP_CTS_PROT;
1179 }
1180 if (params->use_short_preamble >= 0) {
1181 sdata->vif.bss_conf.use_short_preamble =
1182 params->use_short_preamble;
1183 changed |= BSS_CHANGED_ERP_PREAMBLE;
1184 }
1185
1186 if (!sdata->vif.bss_conf.use_short_slot &&
1187 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1188 sdata->vif.bss_conf.use_short_slot = true;
1189 changed |= BSS_CHANGED_ERP_SLOT;
1190 }
1191
1192 if (params->use_short_slot_time >= 0) {
1193 sdata->vif.bss_conf.use_short_slot =
1194 params->use_short_slot_time;
1195 changed |= BSS_CHANGED_ERP_SLOT;
1196 }
1197
1198 if (params->basic_rates) {
1199 int i, j;
1200 u32 rates = 0;
1201 struct ieee80211_local *local = wiphy_priv(wiphy);
1202 struct ieee80211_supported_band *sband =
1203 wiphy->bands[local->oper_channel->band];
1204
1205 for (i = 0; i < params->basic_rates_len; i++) {
1206 int rate = (params->basic_rates[i] & 0x7f) * 5;
1207 for (j = 0; j < sband->n_bitrates; j++) {
1208 if (sband->bitrates[j].bitrate == rate)
1209 rates |= BIT(j);
1210 }
1211 }
1212 sdata->vif.bss_conf.basic_rates = rates;
1213 changed |= BSS_CHANGED_BASIC_RATES;
1214 }
1215
1216 if (params->ap_isolate >= 0) {
1217 if (params->ap_isolate)
1218 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1219 else
1220 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1221 }
1222
1223 if (params->ht_opmode >= 0) {
1224 sdata->vif.bss_conf.ht_operation_mode =
1225 (u16) params->ht_opmode;
1226 changed |= BSS_CHANGED_HT;
1227 }
1228
1229 ieee80211_bss_info_change_notify(sdata, changed);
1230
1231 return 0;
1232 }
1233
1234 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1235 struct ieee80211_txq_params *params)
1236 {
1237 struct ieee80211_local *local = wiphy_priv(wiphy);
1238 struct ieee80211_tx_queue_params p;
1239
1240 if (!local->ops->conf_tx)
1241 return -EOPNOTSUPP;
1242
1243 memset(&p, 0, sizeof(p));
1244 p.aifs = params->aifs;
1245 p.cw_max = params->cwmax;
1246 p.cw_min = params->cwmin;
1247 p.txop = params->txop;
1248
1249 /*
1250 * Setting tx queue params disables u-apsd because it's only
1251 * called in master mode.
1252 */
1253 p.uapsd = false;
1254
1255 if (drv_conf_tx(local, params->queue, &p)) {
1256 wiphy_debug(local->hw.wiphy,
1257 "failed to set TX queue parameters for queue %d\n",
1258 params->queue);
1259 return -EINVAL;
1260 }
1261
1262 return 0;
1263 }
1264
1265 static int ieee80211_set_channel(struct wiphy *wiphy,
1266 struct net_device *netdev,
1267 struct ieee80211_channel *chan,
1268 enum nl80211_channel_type channel_type)
1269 {
1270 struct ieee80211_local *local = wiphy_priv(wiphy);
1271 struct ieee80211_sub_if_data *sdata = NULL;
1272 struct ieee80211_channel *old_oper;
1273 enum nl80211_channel_type old_oper_type;
1274 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1275
1276 if (netdev)
1277 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1278
1279 switch (ieee80211_get_channel_mode(local, NULL)) {
1280 case CHAN_MODE_HOPPING:
1281 return -EBUSY;
1282 case CHAN_MODE_FIXED:
1283 if (local->oper_channel != chan)
1284 return -EBUSY;
1285 if (!sdata && local->_oper_channel_type == channel_type)
1286 return 0;
1287 break;
1288 case CHAN_MODE_UNDEFINED:
1289 break;
1290 }
1291
1292 if (sdata)
1293 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1294 old_oper_type = local->_oper_channel_type;
1295
1296 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1297 return -EBUSY;
1298
1299 old_oper = local->oper_channel;
1300 local->oper_channel = chan;
1301
1302 /* Update driver if changes were actually made. */
1303 if ((old_oper != local->oper_channel) ||
1304 (old_oper_type != local->_oper_channel_type))
1305 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1306
1307 if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1308 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1309 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1310
1311 return 0;
1312 }
1313
1314 #ifdef CONFIG_PM
1315 static int ieee80211_suspend(struct wiphy *wiphy,
1316 struct cfg80211_wowlan *wowlan)
1317 {
1318 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1319 }
1320
1321 static int ieee80211_resume(struct wiphy *wiphy)
1322 {
1323 return __ieee80211_resume(wiphy_priv(wiphy));
1324 }
1325 #else
1326 #define ieee80211_suspend NULL
1327 #define ieee80211_resume NULL
1328 #endif
1329
1330 static int ieee80211_scan(struct wiphy *wiphy,
1331 struct net_device *dev,
1332 struct cfg80211_scan_request *req)
1333 {
1334 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1335
1336 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1337 case NL80211_IFTYPE_STATION:
1338 case NL80211_IFTYPE_ADHOC:
1339 case NL80211_IFTYPE_MESH_POINT:
1340 case NL80211_IFTYPE_P2P_CLIENT:
1341 break;
1342 case NL80211_IFTYPE_P2P_GO:
1343 if (sdata->local->ops->hw_scan)
1344 break;
1345 /*
1346 * FIXME: implement NoA while scanning in software,
1347 * for now fall through to allow scanning only when
1348 * beaconing hasn't been configured yet
1349 */
1350 case NL80211_IFTYPE_AP:
1351 if (sdata->u.ap.beacon)
1352 return -EOPNOTSUPP;
1353 break;
1354 default:
1355 return -EOPNOTSUPP;
1356 }
1357
1358 return ieee80211_request_scan(sdata, req);
1359 }
1360
1361 static int
1362 ieee80211_sched_scan_start(struct wiphy *wiphy,
1363 struct net_device *dev,
1364 struct cfg80211_sched_scan_request *req)
1365 {
1366 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1367
1368 if (!sdata->local->ops->sched_scan_start)
1369 return -EOPNOTSUPP;
1370
1371 return ieee80211_request_sched_scan_start(sdata, req);
1372 }
1373
1374 static int
1375 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1376 {
1377 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1378
1379 if (!sdata->local->ops->sched_scan_stop)
1380 return -EOPNOTSUPP;
1381
1382 return ieee80211_request_sched_scan_stop(sdata);
1383 }
1384
1385 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1386 struct cfg80211_auth_request *req)
1387 {
1388 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1389 }
1390
1391 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1392 struct cfg80211_assoc_request *req)
1393 {
1394 struct ieee80211_local *local = wiphy_priv(wiphy);
1395 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1396
1397 switch (ieee80211_get_channel_mode(local, sdata)) {
1398 case CHAN_MODE_HOPPING:
1399 return -EBUSY;
1400 case CHAN_MODE_FIXED:
1401 if (local->oper_channel == req->bss->channel)
1402 break;
1403 return -EBUSY;
1404 case CHAN_MODE_UNDEFINED:
1405 break;
1406 }
1407
1408 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1409 }
1410
1411 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1412 struct cfg80211_deauth_request *req,
1413 void *cookie)
1414 {
1415 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1416 req, cookie);
1417 }
1418
1419 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1420 struct cfg80211_disassoc_request *req,
1421 void *cookie)
1422 {
1423 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1424 req, cookie);
1425 }
1426
1427 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1428 struct cfg80211_ibss_params *params)
1429 {
1430 struct ieee80211_local *local = wiphy_priv(wiphy);
1431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1432
1433 switch (ieee80211_get_channel_mode(local, sdata)) {
1434 case CHAN_MODE_HOPPING:
1435 return -EBUSY;
1436 case CHAN_MODE_FIXED:
1437 if (!params->channel_fixed)
1438 return -EBUSY;
1439 if (local->oper_channel == params->channel)
1440 break;
1441 return -EBUSY;
1442 case CHAN_MODE_UNDEFINED:
1443 break;
1444 }
1445
1446 return ieee80211_ibss_join(sdata, params);
1447 }
1448
1449 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1450 {
1451 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452
1453 return ieee80211_ibss_leave(sdata);
1454 }
1455
1456 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1457 {
1458 struct ieee80211_local *local = wiphy_priv(wiphy);
1459 int err;
1460
1461 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1462 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1463
1464 if (err)
1465 return err;
1466 }
1467
1468 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1469 err = drv_set_coverage_class(local, wiphy->coverage_class);
1470
1471 if (err)
1472 return err;
1473 }
1474
1475 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1476 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1477
1478 if (err)
1479 return err;
1480 }
1481
1482 if (changed & WIPHY_PARAM_RETRY_SHORT)
1483 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1484 if (changed & WIPHY_PARAM_RETRY_LONG)
1485 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1486 if (changed &
1487 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1488 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1489
1490 return 0;
1491 }
1492
1493 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1494 enum nl80211_tx_power_setting type, int mbm)
1495 {
1496 struct ieee80211_local *local = wiphy_priv(wiphy);
1497 struct ieee80211_channel *chan = local->hw.conf.channel;
1498 u32 changes = 0;
1499
1500 switch (type) {
1501 case NL80211_TX_POWER_AUTOMATIC:
1502 local->user_power_level = -1;
1503 break;
1504 case NL80211_TX_POWER_LIMITED:
1505 if (mbm < 0 || (mbm % 100))
1506 return -EOPNOTSUPP;
1507 local->user_power_level = MBM_TO_DBM(mbm);
1508 break;
1509 case NL80211_TX_POWER_FIXED:
1510 if (mbm < 0 || (mbm % 100))
1511 return -EOPNOTSUPP;
1512 /* TODO: move to cfg80211 when it knows the channel */
1513 if (MBM_TO_DBM(mbm) > chan->max_power)
1514 return -EINVAL;
1515 local->user_power_level = MBM_TO_DBM(mbm);
1516 break;
1517 }
1518
1519 ieee80211_hw_config(local, changes);
1520
1521 return 0;
1522 }
1523
1524 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1525 {
1526 struct ieee80211_local *local = wiphy_priv(wiphy);
1527
1528 *dbm = local->hw.conf.power_level;
1529
1530 return 0;
1531 }
1532
1533 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1534 const u8 *addr)
1535 {
1536 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1539
1540 return 0;
1541 }
1542
1543 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1544 {
1545 struct ieee80211_local *local = wiphy_priv(wiphy);
1546
1547 drv_rfkill_poll(local);
1548 }
1549
1550 #ifdef CONFIG_NL80211_TESTMODE
1551 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1552 {
1553 struct ieee80211_local *local = wiphy_priv(wiphy);
1554
1555 if (!local->ops->testmode_cmd)
1556 return -EOPNOTSUPP;
1557
1558 return local->ops->testmode_cmd(&local->hw, data, len);
1559 }
1560
1561 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1562 struct sk_buff *skb,
1563 struct netlink_callback *cb,
1564 void *data, int len)
1565 {
1566 struct ieee80211_local *local = wiphy_priv(wiphy);
1567
1568 if (!local->ops->testmode_dump)
1569 return -EOPNOTSUPP;
1570
1571 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1572 }
1573 #endif
1574
1575 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1576 enum ieee80211_smps_mode smps_mode)
1577 {
1578 const u8 *ap;
1579 enum ieee80211_smps_mode old_req;
1580 int err;
1581
1582 lockdep_assert_held(&sdata->u.mgd.mtx);
1583
1584 old_req = sdata->u.mgd.req_smps;
1585 sdata->u.mgd.req_smps = smps_mode;
1586
1587 if (old_req == smps_mode &&
1588 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1589 return 0;
1590
1591 /*
1592 * If not associated, or current association is not an HT
1593 * association, there's no need to send an action frame.
1594 */
1595 if (!sdata->u.mgd.associated ||
1596 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1597 mutex_lock(&sdata->local->iflist_mtx);
1598 ieee80211_recalc_smps(sdata->local);
1599 mutex_unlock(&sdata->local->iflist_mtx);
1600 return 0;
1601 }
1602
1603 ap = sdata->u.mgd.associated->bssid;
1604
1605 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1606 if (sdata->u.mgd.powersave)
1607 smps_mode = IEEE80211_SMPS_DYNAMIC;
1608 else
1609 smps_mode = IEEE80211_SMPS_OFF;
1610 }
1611
1612 /* send SM PS frame to AP */
1613 err = ieee80211_send_smps_action(sdata, smps_mode,
1614 ap, ap);
1615 if (err)
1616 sdata->u.mgd.req_smps = old_req;
1617
1618 return err;
1619 }
1620
1621 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1622 bool enabled, int timeout)
1623 {
1624 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1625 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1626
1627 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1628 return -EOPNOTSUPP;
1629
1630 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1631 return -EOPNOTSUPP;
1632
1633 if (enabled == sdata->u.mgd.powersave &&
1634 timeout == local->dynamic_ps_forced_timeout)
1635 return 0;
1636
1637 sdata->u.mgd.powersave = enabled;
1638 local->dynamic_ps_forced_timeout = timeout;
1639
1640 /* no change, but if automatic follow powersave */
1641 mutex_lock(&sdata->u.mgd.mtx);
1642 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1643 mutex_unlock(&sdata->u.mgd.mtx);
1644
1645 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1646 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1647
1648 ieee80211_recalc_ps(local, -1);
1649
1650 return 0;
1651 }
1652
1653 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1654 struct net_device *dev,
1655 s32 rssi_thold, u32 rssi_hyst)
1656 {
1657 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1658 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1659 struct ieee80211_vif *vif = &sdata->vif;
1660 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1661
1662 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1663 rssi_hyst == bss_conf->cqm_rssi_hyst)
1664 return 0;
1665
1666 bss_conf->cqm_rssi_thold = rssi_thold;
1667 bss_conf->cqm_rssi_hyst = rssi_hyst;
1668
1669 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1670 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1671 return -EOPNOTSUPP;
1672 return 0;
1673 }
1674
1675 /* tell the driver upon association, unless already associated */
1676 if (sdata->u.mgd.associated)
1677 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1678
1679 return 0;
1680 }
1681
1682 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1683 struct net_device *dev,
1684 const u8 *addr,
1685 const struct cfg80211_bitrate_mask *mask)
1686 {
1687 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1688 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1689 int i, ret;
1690
1691 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1692 ret = drv_set_bitrate_mask(local, sdata, mask);
1693 if (ret)
1694 return ret;
1695 }
1696
1697 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1698 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1699
1700 return 0;
1701 }
1702
1703 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1704 struct net_device *dev,
1705 struct ieee80211_channel *chan,
1706 enum nl80211_channel_type chantype,
1707 unsigned int duration, u64 *cookie)
1708 {
1709 int ret;
1710 u32 random_cookie;
1711
1712 lockdep_assert_held(&local->mtx);
1713
1714 if (local->hw_roc_cookie)
1715 return -EBUSY;
1716 /* must be nonzero */
1717 random_cookie = random32() | 1;
1718
1719 *cookie = random_cookie;
1720 local->hw_roc_dev = dev;
1721 local->hw_roc_cookie = random_cookie;
1722 local->hw_roc_channel = chan;
1723 local->hw_roc_channel_type = chantype;
1724 local->hw_roc_duration = duration;
1725 ret = drv_remain_on_channel(local, chan, chantype, duration);
1726 if (ret) {
1727 local->hw_roc_channel = NULL;
1728 local->hw_roc_cookie = 0;
1729 }
1730
1731 return ret;
1732 }
1733
1734 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1735 struct net_device *dev,
1736 struct ieee80211_channel *chan,
1737 enum nl80211_channel_type channel_type,
1738 unsigned int duration,
1739 u64 *cookie)
1740 {
1741 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1742 struct ieee80211_local *local = sdata->local;
1743
1744 if (local->ops->remain_on_channel) {
1745 int ret;
1746
1747 mutex_lock(&local->mtx);
1748 ret = ieee80211_remain_on_channel_hw(local, dev,
1749 chan, channel_type,
1750 duration, cookie);
1751 local->hw_roc_for_tx = false;
1752 mutex_unlock(&local->mtx);
1753
1754 return ret;
1755 }
1756
1757 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1758 duration, cookie);
1759 }
1760
1761 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1762 u64 cookie)
1763 {
1764 int ret;
1765
1766 lockdep_assert_held(&local->mtx);
1767
1768 if (local->hw_roc_cookie != cookie)
1769 return -ENOENT;
1770
1771 ret = drv_cancel_remain_on_channel(local);
1772 if (ret)
1773 return ret;
1774
1775 local->hw_roc_cookie = 0;
1776 local->hw_roc_channel = NULL;
1777
1778 ieee80211_recalc_idle(local);
1779
1780 return 0;
1781 }
1782
1783 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1784 struct net_device *dev,
1785 u64 cookie)
1786 {
1787 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1788 struct ieee80211_local *local = sdata->local;
1789
1790 if (local->ops->cancel_remain_on_channel) {
1791 int ret;
1792
1793 mutex_lock(&local->mtx);
1794 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1795 mutex_unlock(&local->mtx);
1796
1797 return ret;
1798 }
1799
1800 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1801 }
1802
1803 static enum work_done_result
1804 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1805 {
1806 /*
1807 * Use the data embedded in the work struct for reporting
1808 * here so if the driver mangled the SKB before dropping
1809 * it (which is the only way we really should get here)
1810 * then we don't report mangled data.
1811 *
1812 * If there was no wait time, then by the time we get here
1813 * the driver will likely not have reported the status yet,
1814 * so in that case userspace will have to deal with it.
1815 */
1816
1817 if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1818 cfg80211_mgmt_tx_status(wk->sdata->dev,
1819 (unsigned long) wk->offchan_tx.frame,
1820 wk->ie, wk->ie_len, false, GFP_KERNEL);
1821
1822 return WORK_DONE_DESTROY;
1823 }
1824
1825 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1826 struct ieee80211_channel *chan, bool offchan,
1827 enum nl80211_channel_type channel_type,
1828 bool channel_type_valid, unsigned int wait,
1829 const u8 *buf, size_t len, u64 *cookie)
1830 {
1831 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1832 struct ieee80211_local *local = sdata->local;
1833 struct sk_buff *skb;
1834 struct sta_info *sta;
1835 struct ieee80211_work *wk;
1836 const struct ieee80211_mgmt *mgmt = (void *)buf;
1837 u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1838 IEEE80211_TX_CTL_REQ_TX_STATUS;
1839 bool is_offchan = false;
1840
1841 /* Check that we are on the requested channel for transmission */
1842 if (chan != local->tmp_channel &&
1843 chan != local->oper_channel)
1844 is_offchan = true;
1845 if (channel_type_valid &&
1846 (channel_type != local->tmp_channel_type &&
1847 channel_type != local->_oper_channel_type))
1848 is_offchan = true;
1849
1850 if (chan == local->hw_roc_channel) {
1851 /* TODO: check channel type? */
1852 is_offchan = false;
1853 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1854 }
1855
1856 if (is_offchan && !offchan)
1857 return -EBUSY;
1858
1859 switch (sdata->vif.type) {
1860 case NL80211_IFTYPE_ADHOC:
1861 case NL80211_IFTYPE_AP:
1862 case NL80211_IFTYPE_AP_VLAN:
1863 case NL80211_IFTYPE_P2P_GO:
1864 case NL80211_IFTYPE_MESH_POINT:
1865 if (!ieee80211_is_action(mgmt->frame_control) ||
1866 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1867 break;
1868 rcu_read_lock();
1869 sta = sta_info_get(sdata, mgmt->da);
1870 rcu_read_unlock();
1871 if (!sta)
1872 return -ENOLINK;
1873 break;
1874 case NL80211_IFTYPE_STATION:
1875 case NL80211_IFTYPE_P2P_CLIENT:
1876 break;
1877 default:
1878 return -EOPNOTSUPP;
1879 }
1880
1881 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1882 if (!skb)
1883 return -ENOMEM;
1884 skb_reserve(skb, local->hw.extra_tx_headroom);
1885
1886 memcpy(skb_put(skb, len), buf, len);
1887
1888 IEEE80211_SKB_CB(skb)->flags = flags;
1889
1890 skb->dev = sdata->dev;
1891
1892 *cookie = (unsigned long) skb;
1893
1894 if (is_offchan && local->ops->offchannel_tx) {
1895 int ret;
1896
1897 IEEE80211_SKB_CB(skb)->band = chan->band;
1898
1899 mutex_lock(&local->mtx);
1900
1901 if (local->hw_offchan_tx_cookie) {
1902 mutex_unlock(&local->mtx);
1903 return -EBUSY;
1904 }
1905
1906 /* TODO: bitrate control, TX processing? */
1907 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1908
1909 if (ret == 0)
1910 local->hw_offchan_tx_cookie = *cookie;
1911 mutex_unlock(&local->mtx);
1912
1913 /*
1914 * Allow driver to return 1 to indicate it wants to have the
1915 * frame transmitted with a remain_on_channel + regular TX.
1916 */
1917 if (ret != 1)
1918 return ret;
1919 }
1920
1921 if (is_offchan && local->ops->remain_on_channel) {
1922 unsigned int duration;
1923 int ret;
1924
1925 mutex_lock(&local->mtx);
1926 /*
1927 * If the duration is zero, then the driver
1928 * wouldn't actually do anything. Set it to
1929 * 100 for now.
1930 *
1931 * TODO: cancel the off-channel operation
1932 * when we get the SKB's TX status and
1933 * the wait time was zero before.
1934 */
1935 duration = 100;
1936 if (wait)
1937 duration = wait;
1938 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1939 channel_type,
1940 duration, cookie);
1941 if (ret) {
1942 kfree_skb(skb);
1943 mutex_unlock(&local->mtx);
1944 return ret;
1945 }
1946
1947 local->hw_roc_for_tx = true;
1948 local->hw_roc_duration = wait;
1949
1950 /*
1951 * queue up frame for transmission after
1952 * ieee80211_ready_on_channel call
1953 */
1954
1955 /* modify cookie to prevent API mismatches */
1956 *cookie ^= 2;
1957 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1958 local->hw_roc_skb = skb;
1959 local->hw_roc_skb_for_status = skb;
1960 mutex_unlock(&local->mtx);
1961
1962 return 0;
1963 }
1964
1965 /*
1966 * Can transmit right away if the channel was the
1967 * right one and there's no wait involved... If a
1968 * wait is involved, we might otherwise not be on
1969 * the right channel for long enough!
1970 */
1971 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1972 ieee80211_tx_skb(sdata, skb);
1973 return 0;
1974 }
1975
1976 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1977 if (!wk) {
1978 kfree_skb(skb);
1979 return -ENOMEM;
1980 }
1981
1982 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1983 wk->chan = chan;
1984 wk->chan_type = channel_type;
1985 wk->sdata = sdata;
1986 wk->done = ieee80211_offchan_tx_done;
1987 wk->offchan_tx.frame = skb;
1988 wk->offchan_tx.wait = wait;
1989 wk->ie_len = len;
1990 memcpy(wk->ie, buf, len);
1991
1992 ieee80211_add_work(wk);
1993 return 0;
1994 }
1995
1996 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1997 struct net_device *dev,
1998 u64 cookie)
1999 {
2000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2001 struct ieee80211_local *local = sdata->local;
2002 struct ieee80211_work *wk;
2003 int ret = -ENOENT;
2004
2005 mutex_lock(&local->mtx);
2006
2007 if (local->ops->offchannel_tx_cancel_wait &&
2008 local->hw_offchan_tx_cookie == cookie) {
2009 ret = drv_offchannel_tx_cancel_wait(local);
2010
2011 if (!ret)
2012 local->hw_offchan_tx_cookie = 0;
2013
2014 mutex_unlock(&local->mtx);
2015
2016 return ret;
2017 }
2018
2019 if (local->ops->cancel_remain_on_channel) {
2020 cookie ^= 2;
2021 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2022
2023 if (ret == 0) {
2024 kfree_skb(local->hw_roc_skb);
2025 local->hw_roc_skb = NULL;
2026 local->hw_roc_skb_for_status = NULL;
2027 }
2028
2029 mutex_unlock(&local->mtx);
2030
2031 return ret;
2032 }
2033
2034 list_for_each_entry(wk, &local->work_list, list) {
2035 if (wk->sdata != sdata)
2036 continue;
2037
2038 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2039 continue;
2040
2041 if (cookie != (unsigned long) wk->offchan_tx.frame)
2042 continue;
2043
2044 wk->timeout = jiffies;
2045
2046 ieee80211_queue_work(&local->hw, &local->work_work);
2047 ret = 0;
2048 break;
2049 }
2050 mutex_unlock(&local->mtx);
2051
2052 return ret;
2053 }
2054
2055 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2056 struct net_device *dev,
2057 u16 frame_type, bool reg)
2058 {
2059 struct ieee80211_local *local = wiphy_priv(wiphy);
2060
2061 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2062 return;
2063
2064 if (reg)
2065 local->probe_req_reg++;
2066 else
2067 local->probe_req_reg--;
2068
2069 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2070 }
2071
2072 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2073 {
2074 struct ieee80211_local *local = wiphy_priv(wiphy);
2075
2076 if (local->started)
2077 return -EOPNOTSUPP;
2078
2079 return drv_set_antenna(local, tx_ant, rx_ant);
2080 }
2081
2082 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2083 {
2084 struct ieee80211_local *local = wiphy_priv(wiphy);
2085
2086 return drv_get_antenna(local, tx_ant, rx_ant);
2087 }
2088
2089 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2090 {
2091 struct ieee80211_local *local = wiphy_priv(wiphy);
2092
2093 return drv_set_ringparam(local, tx, rx);
2094 }
2095
2096 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2097 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2098 {
2099 struct ieee80211_local *local = wiphy_priv(wiphy);
2100
2101 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2102 }
2103
2104 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2105 struct net_device *dev,
2106 struct cfg80211_gtk_rekey_data *data)
2107 {
2108 struct ieee80211_local *local = wiphy_priv(wiphy);
2109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2110
2111 if (!local->ops->set_rekey_data)
2112 return -EOPNOTSUPP;
2113
2114 drv_set_rekey_data(local, sdata, data);
2115
2116 return 0;
2117 }
2118
2119 struct cfg80211_ops mac80211_config_ops = {
2120 .add_virtual_intf = ieee80211_add_iface,
2121 .del_virtual_intf = ieee80211_del_iface,
2122 .change_virtual_intf = ieee80211_change_iface,
2123 .add_key = ieee80211_add_key,
2124 .del_key = ieee80211_del_key,
2125 .get_key = ieee80211_get_key,
2126 .set_default_key = ieee80211_config_default_key,
2127 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2128 .add_beacon = ieee80211_add_beacon,
2129 .set_beacon = ieee80211_set_beacon,
2130 .del_beacon = ieee80211_del_beacon,
2131 .add_station = ieee80211_add_station,
2132 .del_station = ieee80211_del_station,
2133 .change_station = ieee80211_change_station,
2134 .get_station = ieee80211_get_station,
2135 .dump_station = ieee80211_dump_station,
2136 .dump_survey = ieee80211_dump_survey,
2137 #ifdef CONFIG_MAC80211_MESH
2138 .add_mpath = ieee80211_add_mpath,
2139 .del_mpath = ieee80211_del_mpath,
2140 .change_mpath = ieee80211_change_mpath,
2141 .get_mpath = ieee80211_get_mpath,
2142 .dump_mpath = ieee80211_dump_mpath,
2143 .update_mesh_config = ieee80211_update_mesh_config,
2144 .get_mesh_config = ieee80211_get_mesh_config,
2145 .join_mesh = ieee80211_join_mesh,
2146 .leave_mesh = ieee80211_leave_mesh,
2147 #endif
2148 .change_bss = ieee80211_change_bss,
2149 .set_txq_params = ieee80211_set_txq_params,
2150 .set_channel = ieee80211_set_channel,
2151 .suspend = ieee80211_suspend,
2152 .resume = ieee80211_resume,
2153 .scan = ieee80211_scan,
2154 .sched_scan_start = ieee80211_sched_scan_start,
2155 .sched_scan_stop = ieee80211_sched_scan_stop,
2156 .auth = ieee80211_auth,
2157 .assoc = ieee80211_assoc,
2158 .deauth = ieee80211_deauth,
2159 .disassoc = ieee80211_disassoc,
2160 .join_ibss = ieee80211_join_ibss,
2161 .leave_ibss = ieee80211_leave_ibss,
2162 .set_wiphy_params = ieee80211_set_wiphy_params,
2163 .set_tx_power = ieee80211_set_tx_power,
2164 .get_tx_power = ieee80211_get_tx_power,
2165 .set_wds_peer = ieee80211_set_wds_peer,
2166 .rfkill_poll = ieee80211_rfkill_poll,
2167 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2168 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2169 .set_power_mgmt = ieee80211_set_power_mgmt,
2170 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2171 .remain_on_channel = ieee80211_remain_on_channel,
2172 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2173 .mgmt_tx = ieee80211_mgmt_tx,
2174 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2175 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2176 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2177 .set_antenna = ieee80211_set_antenna,
2178 .get_antenna = ieee80211_get_antenna,
2179 .set_ringparam = ieee80211_set_ringparam,
2180 .get_ringparam = ieee80211_get_ringparam,
2181 .set_rekey_data = ieee80211_set_rekey_data,
2182 };
Linux kernel - Deliverables
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