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5bd316c0a63db3cadde6ae6c36321f0277ba5c23
[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 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
454 "rx_packets", "rx_bytes", "wep_weak_iv_count",
455 "rx_duplicates", "rx_fragments", "rx_dropped",
456 "tx_packets", "tx_bytes", "tx_fragments",
457 "tx_filtered", "tx_retry_failed", "tx_retries",
458 "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
459 "channel", "noise", "ch_time", "ch_time_busy",
460 "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
461 };
462 #define STA_STATS_LEN ARRAY_SIZE(ieee80211_gstrings_sta_stats)
463
464 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
465 struct net_device *dev,
466 int sset)
467 {
468 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
469 int rv = 0;
470
471 if (sset == ETH_SS_STATS)
472 rv += STA_STATS_LEN;
473
474 rv += drv_get_et_sset_count(sdata, sset);
475
476 if (rv == 0)
477 return -EOPNOTSUPP;
478 return rv;
479 }
480
481 static void ieee80211_get_et_stats(struct wiphy *wiphy,
482 struct net_device *dev,
483 struct ethtool_stats *stats,
484 u64 *data)
485 {
486 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
487 struct sta_info *sta;
488 struct ieee80211_local *local = sdata->local;
489 struct station_info sinfo;
490 struct survey_info survey;
491 int i, q;
492 #define STA_STATS_SURVEY_LEN 7
493
494 memset(data, 0, sizeof(u64) * STA_STATS_LEN);
495
496 #define ADD_STA_STATS(sta) \
497 do { \
498 data[i++] += sta->rx_packets; \
499 data[i++] += sta->rx_bytes; \
500 data[i++] += sta->wep_weak_iv_count; \
501 data[i++] += sta->num_duplicates; \
502 data[i++] += sta->rx_fragments; \
503 data[i++] += sta->rx_dropped; \
504 \
505 data[i++] += sta->tx_packets; \
506 data[i++] += sta->tx_bytes; \
507 data[i++] += sta->tx_fragments; \
508 data[i++] += sta->tx_filtered_count; \
509 data[i++] += sta->tx_retry_failed; \
510 data[i++] += sta->tx_retry_count; \
511 data[i++] += sta->beacon_loss_count; \
512 } while (0)
513
514 /* For Managed stations, find the single station based on BSSID
515 * and use that. For interface types, iterate through all available
516 * stations and add stats for any station that is assigned to this
517 * network device.
518 */
519
520 rcu_read_lock();
521
522 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
523 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
524
525 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
526 goto do_survey;
527
528 i = 0;
529 ADD_STA_STATS(sta);
530
531 data[i++] = sta->sta_state;
532
533 sinfo.filled = 0;
534 sta_set_sinfo(sta, &sinfo);
535
536 if (sinfo.filled & STATION_INFO_TX_BITRATE)
537 data[i] = 100000 *
538 cfg80211_calculate_bitrate(&sinfo.txrate);
539 i++;
540 if (sinfo.filled & STATION_INFO_RX_BITRATE)
541 data[i] = 100000 *
542 cfg80211_calculate_bitrate(&sinfo.rxrate);
543 i++;
544
545 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
546 data[i] = (u8)sinfo.signal_avg;
547 i++;
548 } else {
549 list_for_each_entry_rcu(sta, &local->sta_list, list) {
550 /* Make sure this station belongs to the proper dev */
551 if (sta->sdata->dev != dev)
552 continue;
553
554 i = 0;
555 ADD_STA_STATS(sta);
556 }
557 }
558
559 do_survey:
560 i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
561 /* Get survey stats for current channel */
562 q = 0;
563 while (true) {
564 survey.filled = 0;
565 if (drv_get_survey(local, q, &survey) != 0) {
566 survey.filled = 0;
567 break;
568 }
569
570 if (survey.channel &&
571 (local->oper_channel->center_freq ==
572 survey.channel->center_freq))
573 break;
574 q++;
575 }
576
577 if (survey.filled)
578 data[i++] = survey.channel->center_freq;
579 else
580 data[i++] = 0;
581 if (survey.filled & SURVEY_INFO_NOISE_DBM)
582 data[i++] = (u8)survey.noise;
583 else
584 data[i++] = -1LL;
585 if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
586 data[i++] = survey.channel_time;
587 else
588 data[i++] = -1LL;
589 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
590 data[i++] = survey.channel_time_busy;
591 else
592 data[i++] = -1LL;
593 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
594 data[i++] = survey.channel_time_ext_busy;
595 else
596 data[i++] = -1LL;
597 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
598 data[i++] = survey.channel_time_rx;
599 else
600 data[i++] = -1LL;
601 if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
602 data[i++] = survey.channel_time_tx;
603 else
604 data[i++] = -1LL;
605
606 rcu_read_unlock();
607
608 if (WARN_ON(i != STA_STATS_LEN))
609 return;
610
611 drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
612 }
613
614 static void ieee80211_get_et_strings(struct wiphy *wiphy,
615 struct net_device *dev,
616 u32 sset, u8 *data)
617 {
618 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
619 int sz_sta_stats = 0;
620
621 if (sset == ETH_SS_STATS) {
622 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
623 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
624 }
625 drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
626 }
627
628 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
629 int idx, u8 *mac, struct station_info *sinfo)
630 {
631 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
632 struct sta_info *sta;
633 int ret = -ENOENT;
634
635 rcu_read_lock();
636
637 sta = sta_info_get_by_idx(sdata, idx);
638 if (sta) {
639 ret = 0;
640 memcpy(mac, sta->sta.addr, ETH_ALEN);
641 sta_set_sinfo(sta, sinfo);
642 }
643
644 rcu_read_unlock();
645
646 return ret;
647 }
648
649 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
650 int idx, struct survey_info *survey)
651 {
652 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
653
654 return drv_get_survey(local, idx, survey);
655 }
656
657 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
658 u8 *mac, struct station_info *sinfo)
659 {
660 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
661 struct sta_info *sta;
662 int ret = -ENOENT;
663
664 rcu_read_lock();
665
666 sta = sta_info_get_bss(sdata, mac);
667 if (sta) {
668 ret = 0;
669 sta_set_sinfo(sta, sinfo);
670 }
671
672 rcu_read_unlock();
673
674 return ret;
675 }
676
677 static int ieee80211_set_channel(struct wiphy *wiphy,
678 struct net_device *netdev,
679 struct ieee80211_channel *chan,
680 enum nl80211_channel_type channel_type)
681 {
682 struct ieee80211_local *local = wiphy_priv(wiphy);
683 struct ieee80211_sub_if_data *sdata = NULL;
684
685 if (netdev)
686 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
687
688 switch (ieee80211_get_channel_mode(local, NULL)) {
689 case CHAN_MODE_HOPPING:
690 return -EBUSY;
691 case CHAN_MODE_FIXED:
692 if (local->oper_channel != chan ||
693 (!sdata && local->_oper_channel_type != channel_type))
694 return -EBUSY;
695 if (!sdata && local->_oper_channel_type == channel_type)
696 return 0;
697 break;
698 case CHAN_MODE_UNDEFINED:
699 break;
700 }
701
702 if (!ieee80211_set_channel_type(local, sdata, channel_type))
703 return -EBUSY;
704
705 local->oper_channel = chan;
706
707 /* auto-detects changes */
708 ieee80211_hw_config(local, 0);
709
710 return 0;
711 }
712
713 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
714 struct ieee80211_channel *chan,
715 enum nl80211_channel_type channel_type)
716 {
717 return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
718 }
719
720 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
721 const u8 *resp, size_t resp_len)
722 {
723 struct sk_buff *new, *old;
724
725 if (!resp || !resp_len)
726 return 1;
727
728 old = rtnl_dereference(sdata->u.ap.probe_resp);
729
730 new = dev_alloc_skb(resp_len);
731 if (!new)
732 return -ENOMEM;
733
734 memcpy(skb_put(new, resp_len), resp, resp_len);
735
736 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
737 if (old) {
738 /* TODO: use call_rcu() */
739 synchronize_rcu();
740 dev_kfree_skb(old);
741 }
742
743 return 0;
744 }
745
746 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
747 struct cfg80211_beacon_data *params)
748 {
749 struct beacon_data *new, *old;
750 int new_head_len, new_tail_len;
751 int size, err;
752 u32 changed = BSS_CHANGED_BEACON;
753
754 old = rtnl_dereference(sdata->u.ap.beacon);
755
756 /* Need to have a beacon head if we don't have one yet */
757 if (!params->head && !old)
758 return -EINVAL;
759
760 /* new or old head? */
761 if (params->head)
762 new_head_len = params->head_len;
763 else
764 new_head_len = old->head_len;
765
766 /* new or old tail? */
767 if (params->tail || !old)
768 /* params->tail_len will be zero for !params->tail */
769 new_tail_len = params->tail_len;
770 else
771 new_tail_len = old->tail_len;
772
773 size = sizeof(*new) + new_head_len + new_tail_len;
774
775 new = kzalloc(size, GFP_KERNEL);
776 if (!new)
777 return -ENOMEM;
778
779 /* start filling the new info now */
780
781 /*
782 * pointers go into the block we allocated,
783 * memory is | beacon_data | head | tail |
784 */
785 new->head = ((u8 *) new) + sizeof(*new);
786 new->tail = new->head + new_head_len;
787 new->head_len = new_head_len;
788 new->tail_len = new_tail_len;
789
790 /* copy in head */
791 if (params->head)
792 memcpy(new->head, params->head, new_head_len);
793 else
794 memcpy(new->head, old->head, new_head_len);
795
796 /* copy in optional tail */
797 if (params->tail)
798 memcpy(new->tail, params->tail, new_tail_len);
799 else
800 if (old)
801 memcpy(new->tail, old->tail, new_tail_len);
802
803 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
804 params->probe_resp_len);
805 if (err < 0)
806 return err;
807 if (err == 0)
808 changed |= BSS_CHANGED_AP_PROBE_RESP;
809
810 rcu_assign_pointer(sdata->u.ap.beacon, new);
811
812 if (old)
813 kfree_rcu(old, rcu_head);
814
815 return changed;
816 }
817
818 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
819 struct cfg80211_ap_settings *params)
820 {
821 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
822 struct beacon_data *old;
823 struct ieee80211_sub_if_data *vlan;
824 u32 changed = BSS_CHANGED_BEACON_INT |
825 BSS_CHANGED_BEACON_ENABLED |
826 BSS_CHANGED_BEACON |
827 BSS_CHANGED_SSID;
828 int err;
829
830 old = rtnl_dereference(sdata->u.ap.beacon);
831 if (old)
832 return -EALREADY;
833
834 err = ieee80211_set_channel(wiphy, dev, params->channel,
835 params->channel_type);
836 if (err)
837 return err;
838
839 /*
840 * Apply control port protocol, this allows us to
841 * not encrypt dynamic WEP control frames.
842 */
843 sdata->control_port_protocol = params->crypto.control_port_ethertype;
844 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
845 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
846 vlan->control_port_protocol =
847 params->crypto.control_port_ethertype;
848 vlan->control_port_no_encrypt =
849 params->crypto.control_port_no_encrypt;
850 }
851
852 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
853 sdata->vif.bss_conf.dtim_period = params->dtim_period;
854
855 sdata->vif.bss_conf.ssid_len = params->ssid_len;
856 if (params->ssid_len)
857 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
858 params->ssid_len);
859 sdata->vif.bss_conf.hidden_ssid =
860 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
861
862 err = ieee80211_assign_beacon(sdata, &params->beacon);
863 if (err < 0)
864 return err;
865 changed |= err;
866
867 ieee80211_bss_info_change_notify(sdata, changed);
868
869 netif_carrier_on(dev);
870 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
871 netif_carrier_on(vlan->dev);
872
873 return 0;
874 }
875
876 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
877 struct cfg80211_beacon_data *params)
878 {
879 struct ieee80211_sub_if_data *sdata;
880 struct beacon_data *old;
881 int err;
882
883 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
884
885 old = rtnl_dereference(sdata->u.ap.beacon);
886 if (!old)
887 return -ENOENT;
888
889 err = ieee80211_assign_beacon(sdata, params);
890 if (err < 0)
891 return err;
892 ieee80211_bss_info_change_notify(sdata, err);
893 return 0;
894 }
895
896 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
897 {
898 struct ieee80211_sub_if_data *sdata, *vlan;
899 struct beacon_data *old;
900
901 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
902
903 old = rtnl_dereference(sdata->u.ap.beacon);
904 if (!old)
905 return -ENOENT;
906
907 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
908 netif_carrier_off(vlan->dev);
909 netif_carrier_off(dev);
910
911 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
912
913 kfree_rcu(old, rcu_head);
914
915 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
916
917 return 0;
918 }
919
920 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
921 struct iapp_layer2_update {
922 u8 da[ETH_ALEN]; /* broadcast */
923 u8 sa[ETH_ALEN]; /* STA addr */
924 __be16 len; /* 6 */
925 u8 dsap; /* 0 */
926 u8 ssap; /* 0 */
927 u8 control;
928 u8 xid_info[3];
929 } __packed;
930
931 static void ieee80211_send_layer2_update(struct sta_info *sta)
932 {
933 struct iapp_layer2_update *msg;
934 struct sk_buff *skb;
935
936 /* Send Level 2 Update Frame to update forwarding tables in layer 2
937 * bridge devices */
938
939 skb = dev_alloc_skb(sizeof(*msg));
940 if (!skb)
941 return;
942 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
943
944 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
945 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
946
947 memset(msg->da, 0xff, ETH_ALEN);
948 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
949 msg->len = htons(6);
950 msg->dsap = 0;
951 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
952 msg->control = 0xaf; /* XID response lsb.1111F101.
953 * F=0 (no poll command; unsolicited frame) */
954 msg->xid_info[0] = 0x81; /* XID format identifier */
955 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
956 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
957
958 skb->dev = sta->sdata->dev;
959 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
960 memset(skb->cb, 0, sizeof(skb->cb));
961 netif_rx_ni(skb);
962 }
963
964 static int sta_apply_parameters(struct ieee80211_local *local,
965 struct sta_info *sta,
966 struct station_parameters *params)
967 {
968 int ret = 0;
969 u32 rates;
970 int i, j;
971 struct ieee80211_supported_band *sband;
972 struct ieee80211_sub_if_data *sdata = sta->sdata;
973 u32 mask, set;
974
975 sband = local->hw.wiphy->bands[local->oper_channel->band];
976
977 mask = params->sta_flags_mask;
978 set = params->sta_flags_set;
979
980 /*
981 * In mesh mode, we can clear AUTHENTICATED flag but must
982 * also make ASSOCIATED follow appropriately for the driver
983 * API. See also below, after AUTHORIZED changes.
984 */
985 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
986 /* cfg80211 should not allow this in non-mesh modes */
987 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
988 return -EINVAL;
989
990 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
991 !test_sta_flag(sta, WLAN_STA_AUTH)) {
992 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
993 if (ret)
994 return ret;
995 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
996 if (ret)
997 return ret;
998 }
999 }
1000
1001 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1002 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1003 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1004 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1005 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1006 if (ret)
1007 return ret;
1008 }
1009
1010 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1011 /* cfg80211 should not allow this in non-mesh modes */
1012 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1013 return -EINVAL;
1014
1015 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1016 test_sta_flag(sta, WLAN_STA_AUTH)) {
1017 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1018 if (ret)
1019 return ret;
1020 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1021 if (ret)
1022 return ret;
1023 }
1024 }
1025
1026
1027 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1028 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1029 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1030 else
1031 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1032 }
1033
1034 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1035 if (set & BIT(NL80211_STA_FLAG_WME)) {
1036 set_sta_flag(sta, WLAN_STA_WME);
1037 sta->sta.wme = true;
1038 } else {
1039 clear_sta_flag(sta, WLAN_STA_WME);
1040 sta->sta.wme = false;
1041 }
1042 }
1043
1044 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1045 if (set & BIT(NL80211_STA_FLAG_MFP))
1046 set_sta_flag(sta, WLAN_STA_MFP);
1047 else
1048 clear_sta_flag(sta, WLAN_STA_MFP);
1049 }
1050
1051 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1052 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1053 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1054 else
1055 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1056 }
1057
1058 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1059 sta->sta.uapsd_queues = params->uapsd_queues;
1060 sta->sta.max_sp = params->max_sp;
1061 }
1062
1063 /*
1064 * cfg80211 validates this (1-2007) and allows setting the AID
1065 * only when creating a new station entry
1066 */
1067 if (params->aid)
1068 sta->sta.aid = params->aid;
1069
1070 /*
1071 * FIXME: updating the following information is racy when this
1072 * function is called from ieee80211_change_station().
1073 * However, all this information should be static so
1074 * maybe we should just reject attemps to change it.
1075 */
1076
1077 if (params->listen_interval >= 0)
1078 sta->listen_interval = params->listen_interval;
1079
1080 if (params->supported_rates) {
1081 rates = 0;
1082
1083 for (i = 0; i < params->supported_rates_len; i++) {
1084 int rate = (params->supported_rates[i] & 0x7f) * 5;
1085 for (j = 0; j < sband->n_bitrates; j++) {
1086 if (sband->bitrates[j].bitrate == rate)
1087 rates |= BIT(j);
1088 }
1089 }
1090 sta->sta.supp_rates[local->oper_channel->band] = rates;
1091 }
1092
1093 if (params->ht_capa)
1094 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1095 params->ht_capa,
1096 &sta->sta.ht_cap);
1097
1098 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1099 #ifdef CONFIG_MAC80211_MESH
1100 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1101 switch (params->plink_state) {
1102 case NL80211_PLINK_LISTEN:
1103 case NL80211_PLINK_ESTAB:
1104 case NL80211_PLINK_BLOCKED:
1105 sta->plink_state = params->plink_state;
1106 break;
1107 default:
1108 /* nothing */
1109 break;
1110 }
1111 else
1112 switch (params->plink_action) {
1113 case PLINK_ACTION_OPEN:
1114 mesh_plink_open(sta);
1115 break;
1116 case PLINK_ACTION_BLOCK:
1117 mesh_plink_block(sta);
1118 break;
1119 }
1120 #endif
1121 }
1122
1123 return 0;
1124 }
1125
1126 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1127 u8 *mac, struct station_parameters *params)
1128 {
1129 struct ieee80211_local *local = wiphy_priv(wiphy);
1130 struct sta_info *sta;
1131 struct ieee80211_sub_if_data *sdata;
1132 int err;
1133 int layer2_update;
1134
1135 if (params->vlan) {
1136 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1137
1138 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1139 sdata->vif.type != NL80211_IFTYPE_AP)
1140 return -EINVAL;
1141 } else
1142 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1143
1144 if (ether_addr_equal(mac, sdata->vif.addr))
1145 return -EINVAL;
1146
1147 if (is_multicast_ether_addr(mac))
1148 return -EINVAL;
1149
1150 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1151 if (!sta)
1152 return -ENOMEM;
1153
1154 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1155 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1156
1157 err = sta_apply_parameters(local, sta, params);
1158 if (err) {
1159 sta_info_free(local, sta);
1160 return err;
1161 }
1162
1163 /*
1164 * for TDLS, rate control should be initialized only when supported
1165 * rates are known.
1166 */
1167 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1168 rate_control_rate_init(sta);
1169
1170 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1171 sdata->vif.type == NL80211_IFTYPE_AP;
1172
1173 err = sta_info_insert_rcu(sta);
1174 if (err) {
1175 rcu_read_unlock();
1176 return err;
1177 }
1178
1179 if (layer2_update)
1180 ieee80211_send_layer2_update(sta);
1181
1182 rcu_read_unlock();
1183
1184 return 0;
1185 }
1186
1187 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1188 u8 *mac)
1189 {
1190 struct ieee80211_local *local = wiphy_priv(wiphy);
1191 struct ieee80211_sub_if_data *sdata;
1192
1193 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1194
1195 if (mac)
1196 return sta_info_destroy_addr_bss(sdata, mac);
1197
1198 sta_info_flush(local, sdata);
1199 return 0;
1200 }
1201
1202 static int ieee80211_change_station(struct wiphy *wiphy,
1203 struct net_device *dev,
1204 u8 *mac,
1205 struct station_parameters *params)
1206 {
1207 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1208 struct ieee80211_local *local = wiphy_priv(wiphy);
1209 struct sta_info *sta;
1210 struct ieee80211_sub_if_data *vlansdata;
1211 int err;
1212
1213 mutex_lock(&local->sta_mtx);
1214
1215 sta = sta_info_get_bss(sdata, mac);
1216 if (!sta) {
1217 mutex_unlock(&local->sta_mtx);
1218 return -ENOENT;
1219 }
1220
1221 /* in station mode, supported rates are only valid with TDLS */
1222 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1223 params->supported_rates &&
1224 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1225 mutex_unlock(&local->sta_mtx);
1226 return -EINVAL;
1227 }
1228
1229 if (params->vlan && params->vlan != sta->sdata->dev) {
1230 bool prev_4addr = false;
1231 bool new_4addr = false;
1232
1233 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1234
1235 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1236 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1237 mutex_unlock(&local->sta_mtx);
1238 return -EINVAL;
1239 }
1240
1241 if (params->vlan->ieee80211_ptr->use_4addr) {
1242 if (vlansdata->u.vlan.sta) {
1243 mutex_unlock(&local->sta_mtx);
1244 return -EBUSY;
1245 }
1246
1247 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1248 new_4addr = true;
1249 }
1250
1251 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1252 sta->sdata->u.vlan.sta) {
1253 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1254 prev_4addr = true;
1255 }
1256
1257 sta->sdata = vlansdata;
1258
1259 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1260 prev_4addr != new_4addr) {
1261 if (new_4addr)
1262 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1263 else
1264 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1265 }
1266
1267 ieee80211_send_layer2_update(sta);
1268 }
1269
1270 err = sta_apply_parameters(local, sta, params);
1271 if (err) {
1272 mutex_unlock(&local->sta_mtx);
1273 return err;
1274 }
1275
1276 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1277 rate_control_rate_init(sta);
1278
1279 mutex_unlock(&local->sta_mtx);
1280
1281 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1282 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1283 ieee80211_recalc_ps(local, -1);
1284
1285 return 0;
1286 }
1287
1288 #ifdef CONFIG_MAC80211_MESH
1289 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1290 u8 *dst, u8 *next_hop)
1291 {
1292 struct ieee80211_sub_if_data *sdata;
1293 struct mesh_path *mpath;
1294 struct sta_info *sta;
1295 int err;
1296
1297 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1298
1299 rcu_read_lock();
1300 sta = sta_info_get(sdata, next_hop);
1301 if (!sta) {
1302 rcu_read_unlock();
1303 return -ENOENT;
1304 }
1305
1306 err = mesh_path_add(dst, sdata);
1307 if (err) {
1308 rcu_read_unlock();
1309 return err;
1310 }
1311
1312 mpath = mesh_path_lookup(dst, sdata);
1313 if (!mpath) {
1314 rcu_read_unlock();
1315 return -ENXIO;
1316 }
1317 mesh_path_fix_nexthop(mpath, sta);
1318
1319 rcu_read_unlock();
1320 return 0;
1321 }
1322
1323 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1324 u8 *dst)
1325 {
1326 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1327
1328 if (dst)
1329 return mesh_path_del(dst, sdata);
1330
1331 mesh_path_flush_by_iface(sdata);
1332 return 0;
1333 }
1334
1335 static int ieee80211_change_mpath(struct wiphy *wiphy,
1336 struct net_device *dev,
1337 u8 *dst, u8 *next_hop)
1338 {
1339 struct ieee80211_sub_if_data *sdata;
1340 struct mesh_path *mpath;
1341 struct sta_info *sta;
1342
1343 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344
1345 rcu_read_lock();
1346
1347 sta = sta_info_get(sdata, next_hop);
1348 if (!sta) {
1349 rcu_read_unlock();
1350 return -ENOENT;
1351 }
1352
1353 mpath = mesh_path_lookup(dst, sdata);
1354 if (!mpath) {
1355 rcu_read_unlock();
1356 return -ENOENT;
1357 }
1358
1359 mesh_path_fix_nexthop(mpath, sta);
1360
1361 rcu_read_unlock();
1362 return 0;
1363 }
1364
1365 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1366 struct mpath_info *pinfo)
1367 {
1368 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1369
1370 if (next_hop_sta)
1371 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1372 else
1373 memset(next_hop, 0, ETH_ALEN);
1374
1375 pinfo->generation = mesh_paths_generation;
1376
1377 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1378 MPATH_INFO_SN |
1379 MPATH_INFO_METRIC |
1380 MPATH_INFO_EXPTIME |
1381 MPATH_INFO_DISCOVERY_TIMEOUT |
1382 MPATH_INFO_DISCOVERY_RETRIES |
1383 MPATH_INFO_FLAGS;
1384
1385 pinfo->frame_qlen = mpath->frame_queue.qlen;
1386 pinfo->sn = mpath->sn;
1387 pinfo->metric = mpath->metric;
1388 if (time_before(jiffies, mpath->exp_time))
1389 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1390 pinfo->discovery_timeout =
1391 jiffies_to_msecs(mpath->discovery_timeout);
1392 pinfo->discovery_retries = mpath->discovery_retries;
1393 pinfo->flags = 0;
1394 if (mpath->flags & MESH_PATH_ACTIVE)
1395 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1396 if (mpath->flags & MESH_PATH_RESOLVING)
1397 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1398 if (mpath->flags & MESH_PATH_SN_VALID)
1399 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1400 if (mpath->flags & MESH_PATH_FIXED)
1401 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1402 if (mpath->flags & MESH_PATH_RESOLVING)
1403 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1404
1405 pinfo->flags = mpath->flags;
1406 }
1407
1408 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1409 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1410
1411 {
1412 struct ieee80211_sub_if_data *sdata;
1413 struct mesh_path *mpath;
1414
1415 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1416
1417 rcu_read_lock();
1418 mpath = mesh_path_lookup(dst, sdata);
1419 if (!mpath) {
1420 rcu_read_unlock();
1421 return -ENOENT;
1422 }
1423 memcpy(dst, mpath->dst, ETH_ALEN);
1424 mpath_set_pinfo(mpath, next_hop, pinfo);
1425 rcu_read_unlock();
1426 return 0;
1427 }
1428
1429 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1430 int idx, u8 *dst, u8 *next_hop,
1431 struct mpath_info *pinfo)
1432 {
1433 struct ieee80211_sub_if_data *sdata;
1434 struct mesh_path *mpath;
1435
1436 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1437
1438 rcu_read_lock();
1439 mpath = mesh_path_lookup_by_idx(idx, sdata);
1440 if (!mpath) {
1441 rcu_read_unlock();
1442 return -ENOENT;
1443 }
1444 memcpy(dst, mpath->dst, ETH_ALEN);
1445 mpath_set_pinfo(mpath, next_hop, pinfo);
1446 rcu_read_unlock();
1447 return 0;
1448 }
1449
1450 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1451 struct net_device *dev,
1452 struct mesh_config *conf)
1453 {
1454 struct ieee80211_sub_if_data *sdata;
1455 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1456
1457 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1458 return 0;
1459 }
1460
1461 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1462 {
1463 return (mask >> (parm-1)) & 0x1;
1464 }
1465
1466 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1467 const struct mesh_setup *setup)
1468 {
1469 u8 *new_ie;
1470 const u8 *old_ie;
1471 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1472 struct ieee80211_sub_if_data, u.mesh);
1473
1474 /* allocate information elements */
1475 new_ie = NULL;
1476 old_ie = ifmsh->ie;
1477
1478 if (setup->ie_len) {
1479 new_ie = kmemdup(setup->ie, setup->ie_len,
1480 GFP_KERNEL);
1481 if (!new_ie)
1482 return -ENOMEM;
1483 }
1484 ifmsh->ie_len = setup->ie_len;
1485 ifmsh->ie = new_ie;
1486 kfree(old_ie);
1487
1488 /* now copy the rest of the setup parameters */
1489 ifmsh->mesh_id_len = setup->mesh_id_len;
1490 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1491 ifmsh->mesh_sp_id = setup->sync_method;
1492 ifmsh->mesh_pp_id = setup->path_sel_proto;
1493 ifmsh->mesh_pm_id = setup->path_metric;
1494 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1495 if (setup->is_authenticated)
1496 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1497 if (setup->is_secure)
1498 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1499
1500 /* mcast rate setting in Mesh Node */
1501 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1502 sizeof(setup->mcast_rate));
1503
1504 return 0;
1505 }
1506
1507 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1508 struct net_device *dev, u32 mask,
1509 const struct mesh_config *nconf)
1510 {
1511 struct mesh_config *conf;
1512 struct ieee80211_sub_if_data *sdata;
1513 struct ieee80211_if_mesh *ifmsh;
1514
1515 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1516 ifmsh = &sdata->u.mesh;
1517
1518 /* Set the config options which we are interested in setting */
1519 conf = &(sdata->u.mesh.mshcfg);
1520 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1521 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1522 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1523 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1524 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1525 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1526 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1527 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1528 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1529 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1530 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1531 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1532 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1533 conf->dot11MeshTTL = nconf->element_ttl;
1534 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1535 conf->auto_open_plinks = nconf->auto_open_plinks;
1536 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1537 conf->dot11MeshNbrOffsetMaxNeighbor =
1538 nconf->dot11MeshNbrOffsetMaxNeighbor;
1539 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1540 conf->dot11MeshHWMPmaxPREQretries =
1541 nconf->dot11MeshHWMPmaxPREQretries;
1542 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1543 conf->path_refresh_time = nconf->path_refresh_time;
1544 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1545 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1546 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1547 conf->dot11MeshHWMPactivePathTimeout =
1548 nconf->dot11MeshHWMPactivePathTimeout;
1549 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1550 conf->dot11MeshHWMPpreqMinInterval =
1551 nconf->dot11MeshHWMPpreqMinInterval;
1552 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1553 conf->dot11MeshHWMPperrMinInterval =
1554 nconf->dot11MeshHWMPperrMinInterval;
1555 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1556 mask))
1557 conf->dot11MeshHWMPnetDiameterTraversalTime =
1558 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1559 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1560 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1561 ieee80211_mesh_root_setup(ifmsh);
1562 }
1563 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1564 /* our current gate announcement implementation rides on root
1565 * announcements, so require this ifmsh to also be a root node
1566 * */
1567 if (nconf->dot11MeshGateAnnouncementProtocol &&
1568 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1569 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1570 ieee80211_mesh_root_setup(ifmsh);
1571 }
1572 conf->dot11MeshGateAnnouncementProtocol =
1573 nconf->dot11MeshGateAnnouncementProtocol;
1574 }
1575 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1576 conf->dot11MeshHWMPRannInterval =
1577 nconf->dot11MeshHWMPRannInterval;
1578 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1579 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1580 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1581 /* our RSSI threshold implementation is supported only for
1582 * devices that report signal in dBm.
1583 */
1584 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1585 return -ENOTSUPP;
1586 conf->rssi_threshold = nconf->rssi_threshold;
1587 }
1588 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1589 conf->ht_opmode = nconf->ht_opmode;
1590 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1591 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1592 }
1593 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1594 conf->dot11MeshHWMPactivePathToRootTimeout =
1595 nconf->dot11MeshHWMPactivePathToRootTimeout;
1596 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1597 conf->dot11MeshHWMProotInterval =
1598 nconf->dot11MeshHWMProotInterval;
1599 return 0;
1600 }
1601
1602 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1603 const struct mesh_config *conf,
1604 const struct mesh_setup *setup)
1605 {
1606 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1607 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1608 int err;
1609
1610 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1611 err = copy_mesh_setup(ifmsh, setup);
1612 if (err)
1613 return err;
1614
1615 err = ieee80211_set_channel(wiphy, dev, setup->channel,
1616 setup->channel_type);
1617 if (err)
1618 return err;
1619
1620 ieee80211_start_mesh(sdata);
1621
1622 return 0;
1623 }
1624
1625 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1626 {
1627 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1628
1629 ieee80211_stop_mesh(sdata);
1630
1631 return 0;
1632 }
1633 #endif
1634
1635 static int ieee80211_change_bss(struct wiphy *wiphy,
1636 struct net_device *dev,
1637 struct bss_parameters *params)
1638 {
1639 struct ieee80211_sub_if_data *sdata;
1640 u32 changed = 0;
1641
1642 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1643
1644 if (params->use_cts_prot >= 0) {
1645 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1646 changed |= BSS_CHANGED_ERP_CTS_PROT;
1647 }
1648 if (params->use_short_preamble >= 0) {
1649 sdata->vif.bss_conf.use_short_preamble =
1650 params->use_short_preamble;
1651 changed |= BSS_CHANGED_ERP_PREAMBLE;
1652 }
1653
1654 if (!sdata->vif.bss_conf.use_short_slot &&
1655 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1656 sdata->vif.bss_conf.use_short_slot = true;
1657 changed |= BSS_CHANGED_ERP_SLOT;
1658 }
1659
1660 if (params->use_short_slot_time >= 0) {
1661 sdata->vif.bss_conf.use_short_slot =
1662 params->use_short_slot_time;
1663 changed |= BSS_CHANGED_ERP_SLOT;
1664 }
1665
1666 if (params->basic_rates) {
1667 int i, j;
1668 u32 rates = 0;
1669 struct ieee80211_local *local = wiphy_priv(wiphy);
1670 struct ieee80211_supported_band *sband =
1671 wiphy->bands[local->oper_channel->band];
1672
1673 for (i = 0; i < params->basic_rates_len; i++) {
1674 int rate = (params->basic_rates[i] & 0x7f) * 5;
1675 for (j = 0; j < sband->n_bitrates; j++) {
1676 if (sband->bitrates[j].bitrate == rate)
1677 rates |= BIT(j);
1678 }
1679 }
1680 sdata->vif.bss_conf.basic_rates = rates;
1681 changed |= BSS_CHANGED_BASIC_RATES;
1682 }
1683
1684 if (params->ap_isolate >= 0) {
1685 if (params->ap_isolate)
1686 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1687 else
1688 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1689 }
1690
1691 if (params->ht_opmode >= 0) {
1692 sdata->vif.bss_conf.ht_operation_mode =
1693 (u16) params->ht_opmode;
1694 changed |= BSS_CHANGED_HT;
1695 }
1696
1697 ieee80211_bss_info_change_notify(sdata, changed);
1698
1699 return 0;
1700 }
1701
1702 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1703 struct net_device *dev,
1704 struct ieee80211_txq_params *params)
1705 {
1706 struct ieee80211_local *local = wiphy_priv(wiphy);
1707 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1708 struct ieee80211_tx_queue_params p;
1709
1710 if (!local->ops->conf_tx)
1711 return -EOPNOTSUPP;
1712
1713 if (local->hw.queues < IEEE80211_NUM_ACS)
1714 return -EOPNOTSUPP;
1715
1716 memset(&p, 0, sizeof(p));
1717 p.aifs = params->aifs;
1718 p.cw_max = params->cwmax;
1719 p.cw_min = params->cwmin;
1720 p.txop = params->txop;
1721
1722 /*
1723 * Setting tx queue params disables u-apsd because it's only
1724 * called in master mode.
1725 */
1726 p.uapsd = false;
1727
1728 sdata->tx_conf[params->ac] = p;
1729 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1730 wiphy_debug(local->hw.wiphy,
1731 "failed to set TX queue parameters for AC %d\n",
1732 params->ac);
1733 return -EINVAL;
1734 }
1735
1736 return 0;
1737 }
1738
1739 #ifdef CONFIG_PM
1740 static int ieee80211_suspend(struct wiphy *wiphy,
1741 struct cfg80211_wowlan *wowlan)
1742 {
1743 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1744 }
1745
1746 static int ieee80211_resume(struct wiphy *wiphy)
1747 {
1748 return __ieee80211_resume(wiphy_priv(wiphy));
1749 }
1750 #else
1751 #define ieee80211_suspend NULL
1752 #define ieee80211_resume NULL
1753 #endif
1754
1755 static int ieee80211_scan(struct wiphy *wiphy,
1756 struct net_device *dev,
1757 struct cfg80211_scan_request *req)
1758 {
1759 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1760
1761 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1762 case NL80211_IFTYPE_STATION:
1763 case NL80211_IFTYPE_ADHOC:
1764 case NL80211_IFTYPE_MESH_POINT:
1765 case NL80211_IFTYPE_P2P_CLIENT:
1766 break;
1767 case NL80211_IFTYPE_P2P_GO:
1768 if (sdata->local->ops->hw_scan)
1769 break;
1770 /*
1771 * FIXME: implement NoA while scanning in software,
1772 * for now fall through to allow scanning only when
1773 * beaconing hasn't been configured yet
1774 */
1775 case NL80211_IFTYPE_AP:
1776 if (sdata->u.ap.beacon)
1777 return -EOPNOTSUPP;
1778 break;
1779 default:
1780 return -EOPNOTSUPP;
1781 }
1782
1783 return ieee80211_request_scan(sdata, req);
1784 }
1785
1786 static int
1787 ieee80211_sched_scan_start(struct wiphy *wiphy,
1788 struct net_device *dev,
1789 struct cfg80211_sched_scan_request *req)
1790 {
1791 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1792
1793 if (!sdata->local->ops->sched_scan_start)
1794 return -EOPNOTSUPP;
1795
1796 return ieee80211_request_sched_scan_start(sdata, req);
1797 }
1798
1799 static int
1800 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1801 {
1802 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1803
1804 if (!sdata->local->ops->sched_scan_stop)
1805 return -EOPNOTSUPP;
1806
1807 return ieee80211_request_sched_scan_stop(sdata);
1808 }
1809
1810 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1811 struct cfg80211_auth_request *req)
1812 {
1813 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1814 }
1815
1816 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1817 struct cfg80211_assoc_request *req)
1818 {
1819 struct ieee80211_local *local = wiphy_priv(wiphy);
1820 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1821
1822 switch (ieee80211_get_channel_mode(local, sdata)) {
1823 case CHAN_MODE_HOPPING:
1824 return -EBUSY;
1825 case CHAN_MODE_FIXED:
1826 if (local->oper_channel == req->bss->channel)
1827 break;
1828 return -EBUSY;
1829 case CHAN_MODE_UNDEFINED:
1830 break;
1831 }
1832
1833 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1834 }
1835
1836 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1837 struct cfg80211_deauth_request *req)
1838 {
1839 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1840 }
1841
1842 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1843 struct cfg80211_disassoc_request *req)
1844 {
1845 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1846 }
1847
1848 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1849 struct cfg80211_ibss_params *params)
1850 {
1851 struct ieee80211_local *local = wiphy_priv(wiphy);
1852 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1853
1854 switch (ieee80211_get_channel_mode(local, sdata)) {
1855 case CHAN_MODE_HOPPING:
1856 return -EBUSY;
1857 case CHAN_MODE_FIXED:
1858 if (!params->channel_fixed)
1859 return -EBUSY;
1860 if (local->oper_channel == params->channel)
1861 break;
1862 return -EBUSY;
1863 case CHAN_MODE_UNDEFINED:
1864 break;
1865 }
1866
1867 return ieee80211_ibss_join(sdata, params);
1868 }
1869
1870 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1871 {
1872 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1873
1874 return ieee80211_ibss_leave(sdata);
1875 }
1876
1877 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1878 {
1879 struct ieee80211_local *local = wiphy_priv(wiphy);
1880 int err;
1881
1882 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1883 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1884
1885 if (err)
1886 return err;
1887 }
1888
1889 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1890 err = drv_set_coverage_class(local, wiphy->coverage_class);
1891
1892 if (err)
1893 return err;
1894 }
1895
1896 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1897 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1898
1899 if (err)
1900 return err;
1901 }
1902
1903 if (changed & WIPHY_PARAM_RETRY_SHORT)
1904 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1905 if (changed & WIPHY_PARAM_RETRY_LONG)
1906 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1907 if (changed &
1908 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1909 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1910
1911 return 0;
1912 }
1913
1914 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1915 enum nl80211_tx_power_setting type, int mbm)
1916 {
1917 struct ieee80211_local *local = wiphy_priv(wiphy);
1918 struct ieee80211_channel *chan = local->hw.conf.channel;
1919 u32 changes = 0;
1920
1921 switch (type) {
1922 case NL80211_TX_POWER_AUTOMATIC:
1923 local->user_power_level = -1;
1924 break;
1925 case NL80211_TX_POWER_LIMITED:
1926 if (mbm < 0 || (mbm % 100))
1927 return -EOPNOTSUPP;
1928 local->user_power_level = MBM_TO_DBM(mbm);
1929 break;
1930 case NL80211_TX_POWER_FIXED:
1931 if (mbm < 0 || (mbm % 100))
1932 return -EOPNOTSUPP;
1933 /* TODO: move to cfg80211 when it knows the channel */
1934 if (MBM_TO_DBM(mbm) > chan->max_power)
1935 return -EINVAL;
1936 local->user_power_level = MBM_TO_DBM(mbm);
1937 break;
1938 }
1939
1940 ieee80211_hw_config(local, changes);
1941
1942 return 0;
1943 }
1944
1945 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1946 {
1947 struct ieee80211_local *local = wiphy_priv(wiphy);
1948
1949 *dbm = local->hw.conf.power_level;
1950
1951 return 0;
1952 }
1953
1954 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1955 const u8 *addr)
1956 {
1957 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1958
1959 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1960
1961 return 0;
1962 }
1963
1964 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1965 {
1966 struct ieee80211_local *local = wiphy_priv(wiphy);
1967
1968 drv_rfkill_poll(local);
1969 }
1970
1971 #ifdef CONFIG_NL80211_TESTMODE
1972 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1973 {
1974 struct ieee80211_local *local = wiphy_priv(wiphy);
1975
1976 if (!local->ops->testmode_cmd)
1977 return -EOPNOTSUPP;
1978
1979 return local->ops->testmode_cmd(&local->hw, data, len);
1980 }
1981
1982 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1983 struct sk_buff *skb,
1984 struct netlink_callback *cb,
1985 void *data, int len)
1986 {
1987 struct ieee80211_local *local = wiphy_priv(wiphy);
1988
1989 if (!local->ops->testmode_dump)
1990 return -EOPNOTSUPP;
1991
1992 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1993 }
1994 #endif
1995
1996 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1997 enum ieee80211_smps_mode smps_mode)
1998 {
1999 const u8 *ap;
2000 enum ieee80211_smps_mode old_req;
2001 int err;
2002
2003 lockdep_assert_held(&sdata->u.mgd.mtx);
2004
2005 old_req = sdata->u.mgd.req_smps;
2006 sdata->u.mgd.req_smps = smps_mode;
2007
2008 if (old_req == smps_mode &&
2009 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2010 return 0;
2011
2012 /*
2013 * If not associated, or current association is not an HT
2014 * association, there's no need to send an action frame.
2015 */
2016 if (!sdata->u.mgd.associated ||
2017 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2018 mutex_lock(&sdata->local->iflist_mtx);
2019 ieee80211_recalc_smps(sdata->local);
2020 mutex_unlock(&sdata->local->iflist_mtx);
2021 return 0;
2022 }
2023
2024 ap = sdata->u.mgd.associated->bssid;
2025
2026 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2027 if (sdata->u.mgd.powersave)
2028 smps_mode = IEEE80211_SMPS_DYNAMIC;
2029 else
2030 smps_mode = IEEE80211_SMPS_OFF;
2031 }
2032
2033 /* send SM PS frame to AP */
2034 err = ieee80211_send_smps_action(sdata, smps_mode,
2035 ap, ap);
2036 if (err)
2037 sdata->u.mgd.req_smps = old_req;
2038
2039 return err;
2040 }
2041
2042 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2043 bool enabled, int timeout)
2044 {
2045 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2046 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2047
2048 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2049 return -EOPNOTSUPP;
2050
2051 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2052 return -EOPNOTSUPP;
2053
2054 if (enabled == sdata->u.mgd.powersave &&
2055 timeout == local->dynamic_ps_forced_timeout)
2056 return 0;
2057
2058 sdata->u.mgd.powersave = enabled;
2059 local->dynamic_ps_forced_timeout = timeout;
2060
2061 /* no change, but if automatic follow powersave */
2062 mutex_lock(&sdata->u.mgd.mtx);
2063 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2064 mutex_unlock(&sdata->u.mgd.mtx);
2065
2066 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2067 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2068
2069 ieee80211_recalc_ps(local, -1);
2070
2071 return 0;
2072 }
2073
2074 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2075 struct net_device *dev,
2076 s32 rssi_thold, u32 rssi_hyst)
2077 {
2078 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2079 struct ieee80211_vif *vif = &sdata->vif;
2080 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2081
2082 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2083 rssi_hyst == bss_conf->cqm_rssi_hyst)
2084 return 0;
2085
2086 bss_conf->cqm_rssi_thold = rssi_thold;
2087 bss_conf->cqm_rssi_hyst = rssi_hyst;
2088
2089 /* tell the driver upon association, unless already associated */
2090 if (sdata->u.mgd.associated &&
2091 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2092 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2093
2094 return 0;
2095 }
2096
2097 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2098 struct net_device *dev,
2099 const u8 *addr,
2100 const struct cfg80211_bitrate_mask *mask)
2101 {
2102 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2103 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2104 int i, ret;
2105
2106 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2107 ret = drv_set_bitrate_mask(local, sdata, mask);
2108 if (ret)
2109 return ret;
2110 }
2111
2112 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2113 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2114 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2115 sizeof(mask->control[i].mcs));
2116 }
2117
2118 return 0;
2119 }
2120
2121 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2122 struct ieee80211_sub_if_data *sdata,
2123 struct ieee80211_channel *channel,
2124 enum nl80211_channel_type channel_type,
2125 unsigned int duration, u64 *cookie,
2126 struct sk_buff *txskb)
2127 {
2128 struct ieee80211_roc_work *roc, *tmp;
2129 bool queued = false;
2130 int ret;
2131
2132 lockdep_assert_held(&local->mtx);
2133
2134 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2135 if (!roc)
2136 return -ENOMEM;
2137
2138 roc->chan = channel;
2139 roc->chan_type = channel_type;
2140 roc->duration = duration;
2141 roc->req_duration = duration;
2142 roc->frame = txskb;
2143 roc->mgmt_tx_cookie = (unsigned long)txskb;
2144 roc->sdata = sdata;
2145 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2146 INIT_LIST_HEAD(&roc->dependents);
2147
2148 /* if there's one pending or we're scanning, queue this one */
2149 if (!list_empty(&local->roc_list) || local->scanning)
2150 goto out_check_combine;
2151
2152 /* if not HW assist, just queue & schedule work */
2153 if (!local->ops->remain_on_channel) {
2154 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2155 goto out_queue;
2156 }
2157
2158 /* otherwise actually kick it off here (for error handling) */
2159
2160 /*
2161 * If the duration is zero, then the driver
2162 * wouldn't actually do anything. Set it to
2163 * 10 for now.
2164 *
2165 * TODO: cancel the off-channel operation
2166 * when we get the SKB's TX status and
2167 * the wait time was zero before.
2168 */
2169 if (!duration)
2170 duration = 10;
2171
2172 ret = drv_remain_on_channel(local, channel, channel_type, duration);
2173 if (ret) {
2174 kfree(roc);
2175 return ret;
2176 }
2177
2178 roc->started = true;
2179 goto out_queue;
2180
2181 out_check_combine:
2182 list_for_each_entry(tmp, &local->roc_list, list) {
2183 if (tmp->chan != channel || tmp->chan_type != channel_type)
2184 continue;
2185
2186 /*
2187 * Extend this ROC if possible:
2188 *
2189 * If it hasn't started yet, just increase the duration
2190 * and add the new one to the list of dependents.
2191 */
2192 if (!tmp->started) {
2193 list_add_tail(&roc->list, &tmp->dependents);
2194 tmp->duration = max(tmp->duration, roc->duration);
2195 queued = true;
2196 break;
2197 }
2198
2199 /* If it has already started, it's more difficult ... */
2200 if (local->ops->remain_on_channel) {
2201 unsigned long j = jiffies;
2202
2203 /*
2204 * In the offloaded ROC case, if it hasn't begun, add
2205 * this new one to the dependent list to be handled
2206 * when the the master one begins. If it has begun,
2207 * check that there's still a minimum time left and
2208 * if so, start this one, transmitting the frame, but
2209 * add it to the list directly after this one with a
2210 * a reduced time so we'll ask the driver to execute
2211 * it right after finishing the previous one, in the
2212 * hope that it'll also be executed right afterwards,
2213 * effectively extending the old one.
2214 * If there's no minimum time left, just add it to the
2215 * normal list.
2216 */
2217 if (!tmp->hw_begun) {
2218 list_add_tail(&roc->list, &tmp->dependents);
2219 queued = true;
2220 break;
2221 }
2222
2223 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2224 tmp->hw_start_time +
2225 msecs_to_jiffies(tmp->duration))) {
2226 int new_dur;
2227
2228 ieee80211_handle_roc_started(roc);
2229
2230 new_dur = roc->duration -
2231 jiffies_to_msecs(tmp->hw_start_time +
2232 msecs_to_jiffies(
2233 tmp->duration) -
2234 j);
2235
2236 if (new_dur > 0) {
2237 /* add right after tmp */
2238 list_add(&roc->list, &tmp->list);
2239 } else {
2240 list_add_tail(&roc->list,
2241 &tmp->dependents);
2242 }
2243 queued = true;
2244 }
2245 } else if (del_timer_sync(&tmp->work.timer)) {
2246 unsigned long new_end;
2247
2248 /*
2249 * In the software ROC case, cancel the timer, if
2250 * that fails then the finish work is already
2251 * queued/pending and thus we queue the new ROC
2252 * normally, if that succeeds then we can extend
2253 * the timer duration and TX the frame (if any.)
2254 */
2255
2256 list_add_tail(&roc->list, &tmp->dependents);
2257 queued = true;
2258
2259 new_end = jiffies + msecs_to_jiffies(roc->duration);
2260
2261 /* ok, it was started & we canceled timer */
2262 if (time_after(new_end, tmp->work.timer.expires))
2263 mod_timer(&tmp->work.timer, new_end);
2264 else
2265 add_timer(&tmp->work.timer);
2266
2267 ieee80211_handle_roc_started(roc);
2268 }
2269 break;
2270 }
2271
2272 out_queue:
2273 if (!queued)
2274 list_add_tail(&roc->list, &local->roc_list);
2275
2276 /*
2277 * cookie is either the roc (for normal roc)
2278 * or the SKB (for mgmt TX)
2279 */
2280 if (txskb)
2281 *cookie = (unsigned long)txskb;
2282 else
2283 *cookie = (unsigned long)roc;
2284
2285 return 0;
2286 }
2287
2288 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2289 struct net_device *dev,
2290 struct ieee80211_channel *chan,
2291 enum nl80211_channel_type channel_type,
2292 unsigned int duration,
2293 u64 *cookie)
2294 {
2295 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2296 struct ieee80211_local *local = sdata->local;
2297 int ret;
2298
2299 mutex_lock(&local->mtx);
2300 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2301 duration, cookie, NULL);
2302 mutex_unlock(&local->mtx);
2303
2304 return ret;
2305 }
2306
2307 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2308 u64 cookie, bool mgmt_tx)
2309 {
2310 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2311 int ret;
2312
2313 mutex_lock(&local->mtx);
2314 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2315 struct ieee80211_roc_work *dep, *tmp2;
2316
2317 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2318 if (!mgmt_tx && (unsigned long)dep != cookie)
2319 continue;
2320 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2321 continue;
2322 /* found dependent item -- just remove it */
2323 list_del(&dep->list);
2324 mutex_unlock(&local->mtx);
2325
2326 ieee80211_roc_notify_destroy(dep);
2327 return 0;
2328 }
2329
2330 if (!mgmt_tx && (unsigned long)roc != cookie)
2331 continue;
2332 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2333 continue;
2334
2335 found = roc;
2336 break;
2337 }
2338
2339 if (!found) {
2340 mutex_unlock(&local->mtx);
2341 return -ENOENT;
2342 }
2343
2344 /*
2345 * We found the item to cancel, so do that. Note that it
2346 * may have dependents, which we also cancel (and send
2347 * the expired signal for.) Not doing so would be quite
2348 * tricky here, but we may need to fix it later.
2349 */
2350
2351 if (local->ops->remain_on_channel) {
2352 if (found->started) {
2353 ret = drv_cancel_remain_on_channel(local);
2354 if (WARN_ON_ONCE(ret)) {
2355 mutex_unlock(&local->mtx);
2356 return ret;
2357 }
2358 }
2359
2360 list_del(&found->list);
2361
2362 ieee80211_start_next_roc(local);
2363 mutex_unlock(&local->mtx);
2364
2365 ieee80211_roc_notify_destroy(found);
2366 } else {
2367 /* work may be pending so use it all the time */
2368 found->abort = true;
2369 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2370
2371 mutex_unlock(&local->mtx);
2372
2373 /* work will clean up etc */
2374 flush_delayed_work(&found->work);
2375 }
2376
2377 return 0;
2378 }
2379
2380 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2381 struct net_device *dev,
2382 u64 cookie)
2383 {
2384 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2385 struct ieee80211_local *local = sdata->local;
2386
2387 return ieee80211_cancel_roc(local, cookie, false);
2388 }
2389
2390 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2391 struct ieee80211_channel *chan, bool offchan,
2392 enum nl80211_channel_type channel_type,
2393 bool channel_type_valid, unsigned int wait,
2394 const u8 *buf, size_t len, bool no_cck,
2395 bool dont_wait_for_ack, u64 *cookie)
2396 {
2397 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2398 struct ieee80211_local *local = sdata->local;
2399 struct sk_buff *skb;
2400 struct sta_info *sta;
2401 const struct ieee80211_mgmt *mgmt = (void *)buf;
2402 bool need_offchan = false;
2403 u32 flags;
2404 int ret;
2405
2406 if (dont_wait_for_ack)
2407 flags = IEEE80211_TX_CTL_NO_ACK;
2408 else
2409 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2410 IEEE80211_TX_CTL_REQ_TX_STATUS;
2411
2412 if (no_cck)
2413 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2414
2415 switch (sdata->vif.type) {
2416 case NL80211_IFTYPE_ADHOC:
2417 if (!sdata->vif.bss_conf.ibss_joined)
2418 need_offchan = true;
2419 /* fall through */
2420 #ifdef CONFIG_MAC80211_MESH
2421 case NL80211_IFTYPE_MESH_POINT:
2422 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2423 !sdata->u.mesh.mesh_id_len)
2424 need_offchan = true;
2425 /* fall through */
2426 #endif
2427 case NL80211_IFTYPE_AP:
2428 case NL80211_IFTYPE_AP_VLAN:
2429 case NL80211_IFTYPE_P2P_GO:
2430 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2431 !ieee80211_vif_is_mesh(&sdata->vif) &&
2432 !rcu_access_pointer(sdata->bss->beacon))
2433 need_offchan = true;
2434 if (!ieee80211_is_action(mgmt->frame_control) ||
2435 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2436 break;
2437 rcu_read_lock();
2438 sta = sta_info_get(sdata, mgmt->da);
2439 rcu_read_unlock();
2440 if (!sta)
2441 return -ENOLINK;
2442 break;
2443 case NL80211_IFTYPE_STATION:
2444 case NL80211_IFTYPE_P2P_CLIENT:
2445 if (!sdata->u.mgd.associated)
2446 need_offchan = true;
2447 break;
2448 default:
2449 return -EOPNOTSUPP;
2450 }
2451
2452 mutex_lock(&local->mtx);
2453
2454 /* Check if the operating channel is the requested channel */
2455 if (!need_offchan) {
2456 need_offchan = chan != local->oper_channel;
2457 if (channel_type_valid &&
2458 channel_type != local->_oper_channel_type)
2459 need_offchan = true;
2460 }
2461
2462 if (need_offchan && !offchan) {
2463 ret = -EBUSY;
2464 goto out_unlock;
2465 }
2466
2467 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2468 if (!skb) {
2469 ret = -ENOMEM;
2470 goto out_unlock;
2471 }
2472 skb_reserve(skb, local->hw.extra_tx_headroom);
2473
2474 memcpy(skb_put(skb, len), buf, len);
2475
2476 IEEE80211_SKB_CB(skb)->flags = flags;
2477
2478 skb->dev = sdata->dev;
2479
2480 if (!need_offchan) {
2481 ieee80211_tx_skb(sdata, skb);
2482 ret = 0;
2483 goto out_unlock;
2484 }
2485
2486 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2487 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2488 IEEE80211_SKB_CB(skb)->hw_queue =
2489 local->hw.offchannel_tx_hw_queue;
2490
2491 /* This will handle all kinds of coalescing and immediate TX */
2492 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2493 wait, cookie, skb);
2494 if (ret)
2495 kfree_skb(skb);
2496 out_unlock:
2497 mutex_unlock(&local->mtx);
2498 return ret;
2499 }
2500
2501 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2502 struct net_device *dev,
2503 u64 cookie)
2504 {
2505 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2506 struct ieee80211_local *local = sdata->local;
2507
2508 return ieee80211_cancel_roc(local, cookie, true);
2509 }
2510
2511 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2512 struct net_device *dev,
2513 u16 frame_type, bool reg)
2514 {
2515 struct ieee80211_local *local = wiphy_priv(wiphy);
2516
2517 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2518 return;
2519
2520 if (reg)
2521 local->probe_req_reg++;
2522 else
2523 local->probe_req_reg--;
2524
2525 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2526 }
2527
2528 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2529 {
2530 struct ieee80211_local *local = wiphy_priv(wiphy);
2531
2532 if (local->started)
2533 return -EOPNOTSUPP;
2534
2535 return drv_set_antenna(local, tx_ant, rx_ant);
2536 }
2537
2538 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2539 {
2540 struct ieee80211_local *local = wiphy_priv(wiphy);
2541
2542 return drv_get_antenna(local, tx_ant, rx_ant);
2543 }
2544
2545 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2546 {
2547 struct ieee80211_local *local = wiphy_priv(wiphy);
2548
2549 return drv_set_ringparam(local, tx, rx);
2550 }
2551
2552 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2553 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2554 {
2555 struct ieee80211_local *local = wiphy_priv(wiphy);
2556
2557 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2558 }
2559
2560 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2561 struct net_device *dev,
2562 struct cfg80211_gtk_rekey_data *data)
2563 {
2564 struct ieee80211_local *local = wiphy_priv(wiphy);
2565 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2566
2567 if (!local->ops->set_rekey_data)
2568 return -EOPNOTSUPP;
2569
2570 drv_set_rekey_data(local, sdata, data);
2571
2572 return 0;
2573 }
2574
2575 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2576 {
2577 u8 *pos = (void *)skb_put(skb, 7);
2578
2579 *pos++ = WLAN_EID_EXT_CAPABILITY;
2580 *pos++ = 5; /* len */
2581 *pos++ = 0x0;
2582 *pos++ = 0x0;
2583 *pos++ = 0x0;
2584 *pos++ = 0x0;
2585 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2586 }
2587
2588 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2589 {
2590 struct ieee80211_local *local = sdata->local;
2591 u16 capab;
2592
2593 capab = 0;
2594 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2595 return capab;
2596
2597 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2598 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2599 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2600 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2601
2602 return capab;
2603 }
2604
2605 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2606 u8 *peer, u8 *bssid)
2607 {
2608 struct ieee80211_tdls_lnkie *lnkid;
2609
2610 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2611
2612 lnkid->ie_type = WLAN_EID_LINK_ID;
2613 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2614
2615 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2616 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2617 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2618 }
2619
2620 static int
2621 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2622 u8 *peer, u8 action_code, u8 dialog_token,
2623 u16 status_code, struct sk_buff *skb)
2624 {
2625 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2626 struct ieee80211_tdls_data *tf;
2627
2628 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2629
2630 memcpy(tf->da, peer, ETH_ALEN);
2631 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2632 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2633 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2634
2635 switch (action_code) {
2636 case WLAN_TDLS_SETUP_REQUEST:
2637 tf->category = WLAN_CATEGORY_TDLS;
2638 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2639
2640 skb_put(skb, sizeof(tf->u.setup_req));
2641 tf->u.setup_req.dialog_token = dialog_token;
2642 tf->u.setup_req.capability =
2643 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2644
2645 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2646 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2647 ieee80211_tdls_add_ext_capab(skb);
2648 break;
2649 case WLAN_TDLS_SETUP_RESPONSE:
2650 tf->category = WLAN_CATEGORY_TDLS;
2651 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2652
2653 skb_put(skb, sizeof(tf->u.setup_resp));
2654 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2655 tf->u.setup_resp.dialog_token = dialog_token;
2656 tf->u.setup_resp.capability =
2657 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2658
2659 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2660 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2661 ieee80211_tdls_add_ext_capab(skb);
2662 break;
2663 case WLAN_TDLS_SETUP_CONFIRM:
2664 tf->category = WLAN_CATEGORY_TDLS;
2665 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2666
2667 skb_put(skb, sizeof(tf->u.setup_cfm));
2668 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2669 tf->u.setup_cfm.dialog_token = dialog_token;
2670 break;
2671 case WLAN_TDLS_TEARDOWN:
2672 tf->category = WLAN_CATEGORY_TDLS;
2673 tf->action_code = WLAN_TDLS_TEARDOWN;
2674
2675 skb_put(skb, sizeof(tf->u.teardown));
2676 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2677 break;
2678 case WLAN_TDLS_DISCOVERY_REQUEST:
2679 tf->category = WLAN_CATEGORY_TDLS;
2680 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2681
2682 skb_put(skb, sizeof(tf->u.discover_req));
2683 tf->u.discover_req.dialog_token = dialog_token;
2684 break;
2685 default:
2686 return -EINVAL;
2687 }
2688
2689 return 0;
2690 }
2691
2692 static int
2693 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2694 u8 *peer, u8 action_code, u8 dialog_token,
2695 u16 status_code, struct sk_buff *skb)
2696 {
2697 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2698 struct ieee80211_mgmt *mgmt;
2699
2700 mgmt = (void *)skb_put(skb, 24);
2701 memset(mgmt, 0, 24);
2702 memcpy(mgmt->da, peer, ETH_ALEN);
2703 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2704 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2705
2706 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2707 IEEE80211_STYPE_ACTION);
2708
2709 switch (action_code) {
2710 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2711 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2712 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2713 mgmt->u.action.u.tdls_discover_resp.action_code =
2714 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2715 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2716 dialog_token;
2717 mgmt->u.action.u.tdls_discover_resp.capability =
2718 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2719
2720 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2721 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2722 ieee80211_tdls_add_ext_capab(skb);
2723 break;
2724 default:
2725 return -EINVAL;
2726 }
2727
2728 return 0;
2729 }
2730
2731 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2732 u8 *peer, u8 action_code, u8 dialog_token,
2733 u16 status_code, const u8 *extra_ies,
2734 size_t extra_ies_len)
2735 {
2736 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2737 struct ieee80211_local *local = sdata->local;
2738 struct ieee80211_tx_info *info;
2739 struct sk_buff *skb = NULL;
2740 bool send_direct;
2741 int ret;
2742
2743 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2744 return -ENOTSUPP;
2745
2746 /* make sure we are in managed mode, and associated */
2747 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2748 !sdata->u.mgd.associated)
2749 return -EINVAL;
2750
2751 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2752 pr_debug("TDLS mgmt action %d peer %pM\n", action_code, peer);
2753 #endif
2754
2755 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2756 max(sizeof(struct ieee80211_mgmt),
2757 sizeof(struct ieee80211_tdls_data)) +
2758 50 + /* supported rates */
2759 7 + /* ext capab */
2760 extra_ies_len +
2761 sizeof(struct ieee80211_tdls_lnkie));
2762 if (!skb)
2763 return -ENOMEM;
2764
2765 info = IEEE80211_SKB_CB(skb);
2766 skb_reserve(skb, local->hw.extra_tx_headroom);
2767
2768 switch (action_code) {
2769 case WLAN_TDLS_SETUP_REQUEST:
2770 case WLAN_TDLS_SETUP_RESPONSE:
2771 case WLAN_TDLS_SETUP_CONFIRM:
2772 case WLAN_TDLS_TEARDOWN:
2773 case WLAN_TDLS_DISCOVERY_REQUEST:
2774 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2775 action_code, dialog_token,
2776 status_code, skb);
2777 send_direct = false;
2778 break;
2779 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2780 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2781 dialog_token, status_code,
2782 skb);
2783 send_direct = true;
2784 break;
2785 default:
2786 ret = -ENOTSUPP;
2787 break;
2788 }
2789
2790 if (ret < 0)
2791 goto fail;
2792
2793 if (extra_ies_len)
2794 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2795
2796 /* the TDLS link IE is always added last */
2797 switch (action_code) {
2798 case WLAN_TDLS_SETUP_REQUEST:
2799 case WLAN_TDLS_SETUP_CONFIRM:
2800 case WLAN_TDLS_TEARDOWN:
2801 case WLAN_TDLS_DISCOVERY_REQUEST:
2802 /* we are the initiator */
2803 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2804 sdata->u.mgd.bssid);
2805 break;
2806 case WLAN_TDLS_SETUP_RESPONSE:
2807 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2808 /* we are the responder */
2809 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2810 sdata->u.mgd.bssid);
2811 break;
2812 default:
2813 ret = -ENOTSUPP;
2814 goto fail;
2815 }
2816
2817 if (send_direct) {
2818 ieee80211_tx_skb(sdata, skb);
2819 return 0;
2820 }
2821
2822 /*
2823 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2824 * we should default to AC_VI.
2825 */
2826 switch (action_code) {
2827 case WLAN_TDLS_SETUP_REQUEST:
2828 case WLAN_TDLS_SETUP_RESPONSE:
2829 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2830 skb->priority = 2;
2831 break;
2832 default:
2833 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2834 skb->priority = 5;
2835 break;
2836 }
2837
2838 /* disable bottom halves when entering the Tx path */
2839 local_bh_disable();
2840 ret = ieee80211_subif_start_xmit(skb, dev);
2841 local_bh_enable();
2842
2843 return ret;
2844
2845 fail:
2846 dev_kfree_skb(skb);
2847 return ret;
2848 }
2849
2850 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2851 u8 *peer, enum nl80211_tdls_operation oper)
2852 {
2853 struct sta_info *sta;
2854 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2855
2856 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2857 return -ENOTSUPP;
2858
2859 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2860 return -EINVAL;
2861
2862 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2863 pr_debug("TDLS oper %d peer %pM\n", oper, peer);
2864 #endif
2865
2866 switch (oper) {
2867 case NL80211_TDLS_ENABLE_LINK:
2868 rcu_read_lock();
2869 sta = sta_info_get(sdata, peer);
2870 if (!sta) {
2871 rcu_read_unlock();
2872 return -ENOLINK;
2873 }
2874
2875 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2876 rcu_read_unlock();
2877 break;
2878 case NL80211_TDLS_DISABLE_LINK:
2879 return sta_info_destroy_addr(sdata, peer);
2880 case NL80211_TDLS_TEARDOWN:
2881 case NL80211_TDLS_SETUP:
2882 case NL80211_TDLS_DISCOVERY_REQ:
2883 /* We don't support in-driver setup/teardown/discovery */
2884 return -ENOTSUPP;
2885 default:
2886 return -ENOTSUPP;
2887 }
2888
2889 return 0;
2890 }
2891
2892 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2893 const u8 *peer, u64 *cookie)
2894 {
2895 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2896 struct ieee80211_local *local = sdata->local;
2897 struct ieee80211_qos_hdr *nullfunc;
2898 struct sk_buff *skb;
2899 int size = sizeof(*nullfunc);
2900 __le16 fc;
2901 bool qos;
2902 struct ieee80211_tx_info *info;
2903 struct sta_info *sta;
2904
2905 rcu_read_lock();
2906 sta = sta_info_get(sdata, peer);
2907 if (sta) {
2908 qos = test_sta_flag(sta, WLAN_STA_WME);
2909 rcu_read_unlock();
2910 } else {
2911 rcu_read_unlock();
2912 return -ENOLINK;
2913 }
2914
2915 if (qos) {
2916 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2917 IEEE80211_STYPE_QOS_NULLFUNC |
2918 IEEE80211_FCTL_FROMDS);
2919 } else {
2920 size -= 2;
2921 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2922 IEEE80211_STYPE_NULLFUNC |
2923 IEEE80211_FCTL_FROMDS);
2924 }
2925
2926 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2927 if (!skb)
2928 return -ENOMEM;
2929
2930 skb->dev = dev;
2931
2932 skb_reserve(skb, local->hw.extra_tx_headroom);
2933
2934 nullfunc = (void *) skb_put(skb, size);
2935 nullfunc->frame_control = fc;
2936 nullfunc->duration_id = 0;
2937 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2938 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2939 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2940 nullfunc->seq_ctrl = 0;
2941
2942 info = IEEE80211_SKB_CB(skb);
2943
2944 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2945 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2946
2947 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2948 skb->priority = 7;
2949 if (qos)
2950 nullfunc->qos_ctrl = cpu_to_le16(7);
2951
2952 local_bh_disable();
2953 ieee80211_xmit(sdata, skb);
2954 local_bh_enable();
2955
2956 *cookie = (unsigned long) skb;
2957 return 0;
2958 }
2959
2960 static struct ieee80211_channel *
2961 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2962 enum nl80211_channel_type *type)
2963 {
2964 struct ieee80211_local *local = wiphy_priv(wiphy);
2965
2966 *type = local->_oper_channel_type;
2967 return local->oper_channel;
2968 }
2969
2970 #ifdef CONFIG_PM
2971 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2972 {
2973 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2974 }
2975 #endif
2976
2977 struct cfg80211_ops mac80211_config_ops = {
2978 .add_virtual_intf = ieee80211_add_iface,
2979 .del_virtual_intf = ieee80211_del_iface,
2980 .change_virtual_intf = ieee80211_change_iface,
2981 .add_key = ieee80211_add_key,
2982 .del_key = ieee80211_del_key,
2983 .get_key = ieee80211_get_key,
2984 .set_default_key = ieee80211_config_default_key,
2985 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2986 .start_ap = ieee80211_start_ap,
2987 .change_beacon = ieee80211_change_beacon,
2988 .stop_ap = ieee80211_stop_ap,
2989 .add_station = ieee80211_add_station,
2990 .del_station = ieee80211_del_station,
2991 .change_station = ieee80211_change_station,
2992 .get_station = ieee80211_get_station,
2993 .dump_station = ieee80211_dump_station,
2994 .dump_survey = ieee80211_dump_survey,
2995 #ifdef CONFIG_MAC80211_MESH
2996 .add_mpath = ieee80211_add_mpath,
2997 .del_mpath = ieee80211_del_mpath,
2998 .change_mpath = ieee80211_change_mpath,
2999 .get_mpath = ieee80211_get_mpath,
3000 .dump_mpath = ieee80211_dump_mpath,
3001 .update_mesh_config = ieee80211_update_mesh_config,
3002 .get_mesh_config = ieee80211_get_mesh_config,
3003 .join_mesh = ieee80211_join_mesh,
3004 .leave_mesh = ieee80211_leave_mesh,
3005 #endif
3006 .change_bss = ieee80211_change_bss,
3007 .set_txq_params = ieee80211_set_txq_params,
3008 .set_monitor_channel = ieee80211_set_monitor_channel,
3009 .suspend = ieee80211_suspend,
3010 .resume = ieee80211_resume,
3011 .scan = ieee80211_scan,
3012 .sched_scan_start = ieee80211_sched_scan_start,
3013 .sched_scan_stop = ieee80211_sched_scan_stop,
3014 .auth = ieee80211_auth,
3015 .assoc = ieee80211_assoc,
3016 .deauth = ieee80211_deauth,
3017 .disassoc = ieee80211_disassoc,
3018 .join_ibss = ieee80211_join_ibss,
3019 .leave_ibss = ieee80211_leave_ibss,
3020 .set_wiphy_params = ieee80211_set_wiphy_params,
3021 .set_tx_power = ieee80211_set_tx_power,
3022 .get_tx_power = ieee80211_get_tx_power,
3023 .set_wds_peer = ieee80211_set_wds_peer,
3024 .rfkill_poll = ieee80211_rfkill_poll,
3025 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3026 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3027 .set_power_mgmt = ieee80211_set_power_mgmt,
3028 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3029 .remain_on_channel = ieee80211_remain_on_channel,
3030 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3031 .mgmt_tx = ieee80211_mgmt_tx,
3032 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3033 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3034 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3035 .set_antenna = ieee80211_set_antenna,
3036 .get_antenna = ieee80211_get_antenna,
3037 .set_ringparam = ieee80211_set_ringparam,
3038 .get_ringparam = ieee80211_get_ringparam,
3039 .set_rekey_data = ieee80211_set_rekey_data,
3040 .tdls_oper = ieee80211_tdls_oper,
3041 .tdls_mgmt = ieee80211_tdls_mgmt,
3042 .probe_client = ieee80211_probe_client,
3043 .get_channel = ieee80211_wiphy_get_channel,
3044 .set_noack_map = ieee80211_set_noack_map,
3045 #ifdef CONFIG_PM
3046 .set_wakeup = ieee80211_set_wakeup,
3047 #endif
3048 .get_et_sset_count = ieee80211_get_et_sset_count,
3049 .get_et_stats = ieee80211_get_et_stats,
3050 .get_et_strings = ieee80211_get_et_strings,
3051 };
Linux kernel - Deliverables
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