projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
[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 return -EBUSY;
694 if (!sdata && local->_oper_channel_type == channel_type)
695 return 0;
696 break;
697 case CHAN_MODE_UNDEFINED:
698 break;
699 }
700
701 if (!ieee80211_set_channel_type(local, sdata, channel_type))
702 return -EBUSY;
703
704 local->oper_channel = chan;
705
706 /* auto-detects changes */
707 ieee80211_hw_config(local, 0);
708
709 return 0;
710 }
711
712 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
713 struct ieee80211_channel *chan,
714 enum nl80211_channel_type channel_type)
715 {
716 return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
717 }
718
719 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
720 const u8 *resp, size_t resp_len)
721 {
722 struct sk_buff *new, *old;
723
724 if (!resp || !resp_len)
725 return 1;
726
727 old = rtnl_dereference(sdata->u.ap.probe_resp);
728
729 new = dev_alloc_skb(resp_len);
730 if (!new)
731 return -ENOMEM;
732
733 memcpy(skb_put(new, resp_len), resp, resp_len);
734
735 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
736 if (old) {
737 /* TODO: use call_rcu() */
738 synchronize_rcu();
739 dev_kfree_skb(old);
740 }
741
742 return 0;
743 }
744
745 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
746 struct cfg80211_beacon_data *params)
747 {
748 struct beacon_data *new, *old;
749 int new_head_len, new_tail_len;
750 int size, err;
751 u32 changed = BSS_CHANGED_BEACON;
752
753 old = rtnl_dereference(sdata->u.ap.beacon);
754
755 /* Need to have a beacon head if we don't have one yet */
756 if (!params->head && !old)
757 return -EINVAL;
758
759 /* new or old head? */
760 if (params->head)
761 new_head_len = params->head_len;
762 else
763 new_head_len = old->head_len;
764
765 /* new or old tail? */
766 if (params->tail || !old)
767 /* params->tail_len will be zero for !params->tail */
768 new_tail_len = params->tail_len;
769 else
770 new_tail_len = old->tail_len;
771
772 size = sizeof(*new) + new_head_len + new_tail_len;
773
774 new = kzalloc(size, GFP_KERNEL);
775 if (!new)
776 return -ENOMEM;
777
778 /* start filling the new info now */
779
780 /*
781 * pointers go into the block we allocated,
782 * memory is | beacon_data | head | tail |
783 */
784 new->head = ((u8 *) new) + sizeof(*new);
785 new->tail = new->head + new_head_len;
786 new->head_len = new_head_len;
787 new->tail_len = new_tail_len;
788
789 /* copy in head */
790 if (params->head)
791 memcpy(new->head, params->head, new_head_len);
792 else
793 memcpy(new->head, old->head, new_head_len);
794
795 /* copy in optional tail */
796 if (params->tail)
797 memcpy(new->tail, params->tail, new_tail_len);
798 else
799 if (old)
800 memcpy(new->tail, old->tail, new_tail_len);
801
802 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
803 params->probe_resp_len);
804 if (err < 0)
805 return err;
806 if (err == 0)
807 changed |= BSS_CHANGED_AP_PROBE_RESP;
808
809 rcu_assign_pointer(sdata->u.ap.beacon, new);
810
811 if (old)
812 kfree_rcu(old, rcu_head);
813
814 return changed;
815 }
816
817 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
818 struct cfg80211_ap_settings *params)
819 {
820 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
821 struct beacon_data *old;
822 struct ieee80211_sub_if_data *vlan;
823 u32 changed = BSS_CHANGED_BEACON_INT |
824 BSS_CHANGED_BEACON_ENABLED |
825 BSS_CHANGED_BEACON |
826 BSS_CHANGED_SSID;
827 int err;
828
829 old = rtnl_dereference(sdata->u.ap.beacon);
830 if (old)
831 return -EALREADY;
832
833 err = ieee80211_set_channel(wiphy, dev, params->channel,
834 params->channel_type);
835 if (err)
836 return err;
837
838 /*
839 * Apply control port protocol, this allows us to
840 * not encrypt dynamic WEP control frames.
841 */
842 sdata->control_port_protocol = params->crypto.control_port_ethertype;
843 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
844 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
845 vlan->control_port_protocol =
846 params->crypto.control_port_ethertype;
847 vlan->control_port_no_encrypt =
848 params->crypto.control_port_no_encrypt;
849 }
850
851 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
852 sdata->vif.bss_conf.dtim_period = params->dtim_period;
853
854 sdata->vif.bss_conf.ssid_len = params->ssid_len;
855 if (params->ssid_len)
856 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
857 params->ssid_len);
858 sdata->vif.bss_conf.hidden_ssid =
859 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
860
861 err = ieee80211_assign_beacon(sdata, &params->beacon);
862 if (err < 0)
863 return err;
864 changed |= err;
865
866 ieee80211_bss_info_change_notify(sdata, changed);
867
868 netif_carrier_on(dev);
869 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
870 netif_carrier_on(vlan->dev);
871
872 return 0;
873 }
874
875 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
876 struct cfg80211_beacon_data *params)
877 {
878 struct ieee80211_sub_if_data *sdata;
879 struct beacon_data *old;
880 int err;
881
882 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
883
884 old = rtnl_dereference(sdata->u.ap.beacon);
885 if (!old)
886 return -ENOENT;
887
888 err = ieee80211_assign_beacon(sdata, params);
889 if (err < 0)
890 return err;
891 ieee80211_bss_info_change_notify(sdata, err);
892 return 0;
893 }
894
895 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
896 {
897 struct ieee80211_sub_if_data *sdata, *vlan;
898 struct beacon_data *old;
899
900 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
901
902 old = rtnl_dereference(sdata->u.ap.beacon);
903 if (!old)
904 return -ENOENT;
905
906 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
907 netif_carrier_off(vlan->dev);
908 netif_carrier_off(dev);
909
910 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
911
912 kfree_rcu(old, rcu_head);
913
914 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
915
916 return 0;
917 }
918
919 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
920 struct iapp_layer2_update {
921 u8 da[ETH_ALEN]; /* broadcast */
922 u8 sa[ETH_ALEN]; /* STA addr */
923 __be16 len; /* 6 */
924 u8 dsap; /* 0 */
925 u8 ssap; /* 0 */
926 u8 control;
927 u8 xid_info[3];
928 } __packed;
929
930 static void ieee80211_send_layer2_update(struct sta_info *sta)
931 {
932 struct iapp_layer2_update *msg;
933 struct sk_buff *skb;
934
935 /* Send Level 2 Update Frame to update forwarding tables in layer 2
936 * bridge devices */
937
938 skb = dev_alloc_skb(sizeof(*msg));
939 if (!skb)
940 return;
941 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
942
943 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
944 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
945
946 memset(msg->da, 0xff, ETH_ALEN);
947 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
948 msg->len = htons(6);
949 msg->dsap = 0;
950 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
951 msg->control = 0xaf; /* XID response lsb.1111F101.
952 * F=0 (no poll command; unsolicited frame) */
953 msg->xid_info[0] = 0x81; /* XID format identifier */
954 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
955 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
956
957 skb->dev = sta->sdata->dev;
958 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
959 memset(skb->cb, 0, sizeof(skb->cb));
960 netif_rx_ni(skb);
961 }
962
963 static int sta_apply_parameters(struct ieee80211_local *local,
964 struct sta_info *sta,
965 struct station_parameters *params)
966 {
967 int ret = 0;
968 u32 rates;
969 int i, j;
970 struct ieee80211_supported_band *sband;
971 struct ieee80211_sub_if_data *sdata = sta->sdata;
972 u32 mask, set;
973
974 sband = local->hw.wiphy->bands[local->oper_channel->band];
975
976 mask = params->sta_flags_mask;
977 set = params->sta_flags_set;
978
979 /*
980 * In mesh mode, we can clear AUTHENTICATED flag but must
981 * also make ASSOCIATED follow appropriately for the driver
982 * API. See also below, after AUTHORIZED changes.
983 */
984 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
985 /* cfg80211 should not allow this in non-mesh modes */
986 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
987 return -EINVAL;
988
989 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
990 !test_sta_flag(sta, WLAN_STA_AUTH)) {
991 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
992 if (ret)
993 return ret;
994 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
995 if (ret)
996 return ret;
997 }
998 }
999
1000 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1001 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1002 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1003 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1004 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1005 if (ret)
1006 return ret;
1007 }
1008
1009 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1010 /* cfg80211 should not allow this in non-mesh modes */
1011 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1012 return -EINVAL;
1013
1014 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1015 test_sta_flag(sta, WLAN_STA_AUTH)) {
1016 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1017 if (ret)
1018 return ret;
1019 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1020 if (ret)
1021 return ret;
1022 }
1023 }
1024
1025
1026 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1027 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1028 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1029 else
1030 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1031 }
1032
1033 if (mask & BIT(NL80211_STA_FLAG_WME)) {
1034 if (set & BIT(NL80211_STA_FLAG_WME)) {
1035 set_sta_flag(sta, WLAN_STA_WME);
1036 sta->sta.wme = true;
1037 } else {
1038 clear_sta_flag(sta, WLAN_STA_WME);
1039 sta->sta.wme = false;
1040 }
1041 }
1042
1043 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1044 if (set & BIT(NL80211_STA_FLAG_MFP))
1045 set_sta_flag(sta, WLAN_STA_MFP);
1046 else
1047 clear_sta_flag(sta, WLAN_STA_MFP);
1048 }
1049
1050 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1051 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1052 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1053 else
1054 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1055 }
1056
1057 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1058 sta->sta.uapsd_queues = params->uapsd_queues;
1059 sta->sta.max_sp = params->max_sp;
1060 }
1061
1062 /*
1063 * cfg80211 validates this (1-2007) and allows setting the AID
1064 * only when creating a new station entry
1065 */
1066 if (params->aid)
1067 sta->sta.aid = params->aid;
1068
1069 /*
1070 * FIXME: updating the following information is racy when this
1071 * function is called from ieee80211_change_station().
1072 * However, all this information should be static so
1073 * maybe we should just reject attemps to change it.
1074 */
1075
1076 if (params->listen_interval >= 0)
1077 sta->listen_interval = params->listen_interval;
1078
1079 if (params->supported_rates) {
1080 rates = 0;
1081
1082 for (i = 0; i < params->supported_rates_len; i++) {
1083 int rate = (params->supported_rates[i] & 0x7f) * 5;
1084 for (j = 0; j < sband->n_bitrates; j++) {
1085 if (sband->bitrates[j].bitrate == rate)
1086 rates |= BIT(j);
1087 }
1088 }
1089 sta->sta.supp_rates[local->oper_channel->band] = rates;
1090 }
1091
1092 if (params->ht_capa)
1093 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1094 params->ht_capa,
1095 &sta->sta.ht_cap);
1096
1097 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1098 #ifdef CONFIG_MAC80211_MESH
1099 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1100 switch (params->plink_state) {
1101 case NL80211_PLINK_LISTEN:
1102 case NL80211_PLINK_ESTAB:
1103 case NL80211_PLINK_BLOCKED:
1104 sta->plink_state = params->plink_state;
1105 break;
1106 default:
1107 /* nothing */
1108 break;
1109 }
1110 else
1111 switch (params->plink_action) {
1112 case PLINK_ACTION_OPEN:
1113 mesh_plink_open(sta);
1114 break;
1115 case PLINK_ACTION_BLOCK:
1116 mesh_plink_block(sta);
1117 break;
1118 }
1119 #endif
1120 }
1121
1122 return 0;
1123 }
1124
1125 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1126 u8 *mac, struct station_parameters *params)
1127 {
1128 struct ieee80211_local *local = wiphy_priv(wiphy);
1129 struct sta_info *sta;
1130 struct ieee80211_sub_if_data *sdata;
1131 int err;
1132 int layer2_update;
1133
1134 if (params->vlan) {
1135 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1136
1137 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1138 sdata->vif.type != NL80211_IFTYPE_AP)
1139 return -EINVAL;
1140 } else
1141 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1142
1143 if (ether_addr_equal(mac, sdata->vif.addr))
1144 return -EINVAL;
1145
1146 if (is_multicast_ether_addr(mac))
1147 return -EINVAL;
1148
1149 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1150 if (!sta)
1151 return -ENOMEM;
1152
1153 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1154 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1155
1156 err = sta_apply_parameters(local, sta, params);
1157 if (err) {
1158 sta_info_free(local, sta);
1159 return err;
1160 }
1161
1162 /*
1163 * for TDLS, rate control should be initialized only when supported
1164 * rates are known.
1165 */
1166 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1167 rate_control_rate_init(sta);
1168
1169 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1170 sdata->vif.type == NL80211_IFTYPE_AP;
1171
1172 err = sta_info_insert_rcu(sta);
1173 if (err) {
1174 rcu_read_unlock();
1175 return err;
1176 }
1177
1178 if (layer2_update)
1179 ieee80211_send_layer2_update(sta);
1180
1181 rcu_read_unlock();
1182
1183 return 0;
1184 }
1185
1186 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1187 u8 *mac)
1188 {
1189 struct ieee80211_local *local = wiphy_priv(wiphy);
1190 struct ieee80211_sub_if_data *sdata;
1191
1192 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1193
1194 if (mac)
1195 return sta_info_destroy_addr_bss(sdata, mac);
1196
1197 sta_info_flush(local, sdata);
1198 return 0;
1199 }
1200
1201 static int ieee80211_change_station(struct wiphy *wiphy,
1202 struct net_device *dev,
1203 u8 *mac,
1204 struct station_parameters *params)
1205 {
1206 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1207 struct ieee80211_local *local = wiphy_priv(wiphy);
1208 struct sta_info *sta;
1209 struct ieee80211_sub_if_data *vlansdata;
1210 int err;
1211
1212 mutex_lock(&local->sta_mtx);
1213
1214 sta = sta_info_get_bss(sdata, mac);
1215 if (!sta) {
1216 mutex_unlock(&local->sta_mtx);
1217 return -ENOENT;
1218 }
1219
1220 /* in station mode, supported rates are only valid with TDLS */
1221 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1222 params->supported_rates &&
1223 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1224 mutex_unlock(&local->sta_mtx);
1225 return -EINVAL;
1226 }
1227
1228 if (params->vlan && params->vlan != sta->sdata->dev) {
1229 bool prev_4addr = false;
1230 bool new_4addr = false;
1231
1232 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1233
1234 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1235 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1236 mutex_unlock(&local->sta_mtx);
1237 return -EINVAL;
1238 }
1239
1240 if (params->vlan->ieee80211_ptr->use_4addr) {
1241 if (vlansdata->u.vlan.sta) {
1242 mutex_unlock(&local->sta_mtx);
1243 return -EBUSY;
1244 }
1245
1246 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1247 new_4addr = true;
1248 }
1249
1250 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1251 sta->sdata->u.vlan.sta) {
1252 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1253 prev_4addr = true;
1254 }
1255
1256 sta->sdata = vlansdata;
1257
1258 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1259 prev_4addr != new_4addr) {
1260 if (new_4addr)
1261 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1262 else
1263 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1264 }
1265
1266 ieee80211_send_layer2_update(sta);
1267 }
1268
1269 err = sta_apply_parameters(local, sta, params);
1270 if (err) {
1271 mutex_unlock(&local->sta_mtx);
1272 return err;
1273 }
1274
1275 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1276 rate_control_rate_init(sta);
1277
1278 mutex_unlock(&local->sta_mtx);
1279
1280 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1281 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1282 ieee80211_recalc_ps(local, -1);
1283
1284 return 0;
1285 }
1286
1287 #ifdef CONFIG_MAC80211_MESH
1288 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1289 u8 *dst, u8 *next_hop)
1290 {
1291 struct ieee80211_sub_if_data *sdata;
1292 struct mesh_path *mpath;
1293 struct sta_info *sta;
1294 int err;
1295
1296 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1297
1298 rcu_read_lock();
1299 sta = sta_info_get(sdata, next_hop);
1300 if (!sta) {
1301 rcu_read_unlock();
1302 return -ENOENT;
1303 }
1304
1305 err = mesh_path_add(dst, sdata);
1306 if (err) {
1307 rcu_read_unlock();
1308 return err;
1309 }
1310
1311 mpath = mesh_path_lookup(dst, sdata);
1312 if (!mpath) {
1313 rcu_read_unlock();
1314 return -ENXIO;
1315 }
1316 mesh_path_fix_nexthop(mpath, sta);
1317
1318 rcu_read_unlock();
1319 return 0;
1320 }
1321
1322 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1323 u8 *dst)
1324 {
1325 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1326
1327 if (dst)
1328 return mesh_path_del(dst, sdata);
1329
1330 mesh_path_flush_by_iface(sdata);
1331 return 0;
1332 }
1333
1334 static int ieee80211_change_mpath(struct wiphy *wiphy,
1335 struct net_device *dev,
1336 u8 *dst, u8 *next_hop)
1337 {
1338 struct ieee80211_sub_if_data *sdata;
1339 struct mesh_path *mpath;
1340 struct sta_info *sta;
1341
1342 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1343
1344 rcu_read_lock();
1345
1346 sta = sta_info_get(sdata, next_hop);
1347 if (!sta) {
1348 rcu_read_unlock();
1349 return -ENOENT;
1350 }
1351
1352 mpath = mesh_path_lookup(dst, sdata);
1353 if (!mpath) {
1354 rcu_read_unlock();
1355 return -ENOENT;
1356 }
1357
1358 mesh_path_fix_nexthop(mpath, sta);
1359
1360 rcu_read_unlock();
1361 return 0;
1362 }
1363
1364 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1365 struct mpath_info *pinfo)
1366 {
1367 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1368
1369 if (next_hop_sta)
1370 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1371 else
1372 memset(next_hop, 0, ETH_ALEN);
1373
1374 pinfo->generation = mesh_paths_generation;
1375
1376 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1377 MPATH_INFO_SN |
1378 MPATH_INFO_METRIC |
1379 MPATH_INFO_EXPTIME |
1380 MPATH_INFO_DISCOVERY_TIMEOUT |
1381 MPATH_INFO_DISCOVERY_RETRIES |
1382 MPATH_INFO_FLAGS;
1383
1384 pinfo->frame_qlen = mpath->frame_queue.qlen;
1385 pinfo->sn = mpath->sn;
1386 pinfo->metric = mpath->metric;
1387 if (time_before(jiffies, mpath->exp_time))
1388 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1389 pinfo->discovery_timeout =
1390 jiffies_to_msecs(mpath->discovery_timeout);
1391 pinfo->discovery_retries = mpath->discovery_retries;
1392 pinfo->flags = 0;
1393 if (mpath->flags & MESH_PATH_ACTIVE)
1394 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1395 if (mpath->flags & MESH_PATH_RESOLVING)
1396 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1397 if (mpath->flags & MESH_PATH_SN_VALID)
1398 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1399 if (mpath->flags & MESH_PATH_FIXED)
1400 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1401 if (mpath->flags & MESH_PATH_RESOLVING)
1402 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1403
1404 pinfo->flags = mpath->flags;
1405 }
1406
1407 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1408 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1409
1410 {
1411 struct ieee80211_sub_if_data *sdata;
1412 struct mesh_path *mpath;
1413
1414 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1415
1416 rcu_read_lock();
1417 mpath = mesh_path_lookup(dst, sdata);
1418 if (!mpath) {
1419 rcu_read_unlock();
1420 return -ENOENT;
1421 }
1422 memcpy(dst, mpath->dst, ETH_ALEN);
1423 mpath_set_pinfo(mpath, next_hop, pinfo);
1424 rcu_read_unlock();
1425 return 0;
1426 }
1427
1428 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1429 int idx, u8 *dst, u8 *next_hop,
1430 struct mpath_info *pinfo)
1431 {
1432 struct ieee80211_sub_if_data *sdata;
1433 struct mesh_path *mpath;
1434
1435 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1436
1437 rcu_read_lock();
1438 mpath = mesh_path_lookup_by_idx(idx, sdata);
1439 if (!mpath) {
1440 rcu_read_unlock();
1441 return -ENOENT;
1442 }
1443 memcpy(dst, mpath->dst, ETH_ALEN);
1444 mpath_set_pinfo(mpath, next_hop, pinfo);
1445 rcu_read_unlock();
1446 return 0;
1447 }
1448
1449 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1450 struct net_device *dev,
1451 struct mesh_config *conf)
1452 {
1453 struct ieee80211_sub_if_data *sdata;
1454 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1455
1456 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1457 return 0;
1458 }
1459
1460 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1461 {
1462 return (mask >> (parm-1)) & 0x1;
1463 }
1464
1465 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1466 const struct mesh_setup *setup)
1467 {
1468 u8 *new_ie;
1469 const u8 *old_ie;
1470 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1471 struct ieee80211_sub_if_data, u.mesh);
1472
1473 /* allocate information elements */
1474 new_ie = NULL;
1475 old_ie = ifmsh->ie;
1476
1477 if (setup->ie_len) {
1478 new_ie = kmemdup(setup->ie, setup->ie_len,
1479 GFP_KERNEL);
1480 if (!new_ie)
1481 return -ENOMEM;
1482 }
1483 ifmsh->ie_len = setup->ie_len;
1484 ifmsh->ie = new_ie;
1485 kfree(old_ie);
1486
1487 /* now copy the rest of the setup parameters */
1488 ifmsh->mesh_id_len = setup->mesh_id_len;
1489 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1490 ifmsh->mesh_sp_id = setup->sync_method;
1491 ifmsh->mesh_pp_id = setup->path_sel_proto;
1492 ifmsh->mesh_pm_id = setup->path_metric;
1493 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1494 if (setup->is_authenticated)
1495 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1496 if (setup->is_secure)
1497 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1498
1499 /* mcast rate setting in Mesh Node */
1500 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1501 sizeof(setup->mcast_rate));
1502
1503 return 0;
1504 }
1505
1506 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1507 struct net_device *dev, u32 mask,
1508 const struct mesh_config *nconf)
1509 {
1510 struct mesh_config *conf;
1511 struct ieee80211_sub_if_data *sdata;
1512 struct ieee80211_if_mesh *ifmsh;
1513
1514 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1515 ifmsh = &sdata->u.mesh;
1516
1517 /* Set the config options which we are interested in setting */
1518 conf = &(sdata->u.mesh.mshcfg);
1519 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1520 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1521 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1522 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1523 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1524 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1525 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1526 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1527 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1528 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1529 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1530 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1531 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1532 conf->dot11MeshTTL = nconf->element_ttl;
1533 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1534 conf->auto_open_plinks = nconf->auto_open_plinks;
1535 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1536 conf->dot11MeshNbrOffsetMaxNeighbor =
1537 nconf->dot11MeshNbrOffsetMaxNeighbor;
1538 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1539 conf->dot11MeshHWMPmaxPREQretries =
1540 nconf->dot11MeshHWMPmaxPREQretries;
1541 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1542 conf->path_refresh_time = nconf->path_refresh_time;
1543 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1544 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1545 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1546 conf->dot11MeshHWMPactivePathTimeout =
1547 nconf->dot11MeshHWMPactivePathTimeout;
1548 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1549 conf->dot11MeshHWMPpreqMinInterval =
1550 nconf->dot11MeshHWMPpreqMinInterval;
1551 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1552 conf->dot11MeshHWMPperrMinInterval =
1553 nconf->dot11MeshHWMPperrMinInterval;
1554 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1555 mask))
1556 conf->dot11MeshHWMPnetDiameterTraversalTime =
1557 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1558 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1559 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1560 ieee80211_mesh_root_setup(ifmsh);
1561 }
1562 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1563 /* our current gate announcement implementation rides on root
1564 * announcements, so require this ifmsh to also be a root node
1565 * */
1566 if (nconf->dot11MeshGateAnnouncementProtocol &&
1567 !conf->dot11MeshHWMPRootMode) {
1568 conf->dot11MeshHWMPRootMode = 1;
1569 ieee80211_mesh_root_setup(ifmsh);
1570 }
1571 conf->dot11MeshGateAnnouncementProtocol =
1572 nconf->dot11MeshGateAnnouncementProtocol;
1573 }
1574 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1575 conf->dot11MeshHWMPRannInterval =
1576 nconf->dot11MeshHWMPRannInterval;
1577 }
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 return 0;
1594 }
1595
1596 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1597 const struct mesh_config *conf,
1598 const struct mesh_setup *setup)
1599 {
1600 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1601 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1602 int err;
1603
1604 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1605 err = copy_mesh_setup(ifmsh, setup);
1606 if (err)
1607 return err;
1608
1609 err = ieee80211_set_channel(wiphy, dev, setup->channel,
1610 setup->channel_type);
1611 if (err)
1612 return err;
1613
1614 ieee80211_start_mesh(sdata);
1615
1616 return 0;
1617 }
1618
1619 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1620 {
1621 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1622
1623 ieee80211_stop_mesh(sdata);
1624
1625 return 0;
1626 }
1627 #endif
1628
1629 static int ieee80211_change_bss(struct wiphy *wiphy,
1630 struct net_device *dev,
1631 struct bss_parameters *params)
1632 {
1633 struct ieee80211_sub_if_data *sdata;
1634 u32 changed = 0;
1635
1636 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1637
1638 if (params->use_cts_prot >= 0) {
1639 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1640 changed |= BSS_CHANGED_ERP_CTS_PROT;
1641 }
1642 if (params->use_short_preamble >= 0) {
1643 sdata->vif.bss_conf.use_short_preamble =
1644 params->use_short_preamble;
1645 changed |= BSS_CHANGED_ERP_PREAMBLE;
1646 }
1647
1648 if (!sdata->vif.bss_conf.use_short_slot &&
1649 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1650 sdata->vif.bss_conf.use_short_slot = true;
1651 changed |= BSS_CHANGED_ERP_SLOT;
1652 }
1653
1654 if (params->use_short_slot_time >= 0) {
1655 sdata->vif.bss_conf.use_short_slot =
1656 params->use_short_slot_time;
1657 changed |= BSS_CHANGED_ERP_SLOT;
1658 }
1659
1660 if (params->basic_rates) {
1661 int i, j;
1662 u32 rates = 0;
1663 struct ieee80211_local *local = wiphy_priv(wiphy);
1664 struct ieee80211_supported_band *sband =
1665 wiphy->bands[local->oper_channel->band];
1666
1667 for (i = 0; i < params->basic_rates_len; i++) {
1668 int rate = (params->basic_rates[i] & 0x7f) * 5;
1669 for (j = 0; j < sband->n_bitrates; j++) {
1670 if (sband->bitrates[j].bitrate == rate)
1671 rates |= BIT(j);
1672 }
1673 }
1674 sdata->vif.bss_conf.basic_rates = rates;
1675 changed |= BSS_CHANGED_BASIC_RATES;
1676 }
1677
1678 if (params->ap_isolate >= 0) {
1679 if (params->ap_isolate)
1680 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1681 else
1682 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1683 }
1684
1685 if (params->ht_opmode >= 0) {
1686 sdata->vif.bss_conf.ht_operation_mode =
1687 (u16) params->ht_opmode;
1688 changed |= BSS_CHANGED_HT;
1689 }
1690
1691 ieee80211_bss_info_change_notify(sdata, changed);
1692
1693 return 0;
1694 }
1695
1696 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1697 struct net_device *dev,
1698 struct ieee80211_txq_params *params)
1699 {
1700 struct ieee80211_local *local = wiphy_priv(wiphy);
1701 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1702 struct ieee80211_tx_queue_params p;
1703
1704 if (!local->ops->conf_tx)
1705 return -EOPNOTSUPP;
1706
1707 if (local->hw.queues < IEEE80211_NUM_ACS)
1708 return -EOPNOTSUPP;
1709
1710 memset(&p, 0, sizeof(p));
1711 p.aifs = params->aifs;
1712 p.cw_max = params->cwmax;
1713 p.cw_min = params->cwmin;
1714 p.txop = params->txop;
1715
1716 /*
1717 * Setting tx queue params disables u-apsd because it's only
1718 * called in master mode.
1719 */
1720 p.uapsd = false;
1721
1722 sdata->tx_conf[params->ac] = p;
1723 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1724 wiphy_debug(local->hw.wiphy,
1725 "failed to set TX queue parameters for AC %d\n",
1726 params->ac);
1727 return -EINVAL;
1728 }
1729
1730 return 0;
1731 }
1732
1733 #ifdef CONFIG_PM
1734 static int ieee80211_suspend(struct wiphy *wiphy,
1735 struct cfg80211_wowlan *wowlan)
1736 {
1737 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1738 }
1739
1740 static int ieee80211_resume(struct wiphy *wiphy)
1741 {
1742 return __ieee80211_resume(wiphy_priv(wiphy));
1743 }
1744 #else
1745 #define ieee80211_suspend NULL
1746 #define ieee80211_resume NULL
1747 #endif
1748
1749 static int ieee80211_scan(struct wiphy *wiphy,
1750 struct net_device *dev,
1751 struct cfg80211_scan_request *req)
1752 {
1753 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1754
1755 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1756 case NL80211_IFTYPE_STATION:
1757 case NL80211_IFTYPE_ADHOC:
1758 case NL80211_IFTYPE_MESH_POINT:
1759 case NL80211_IFTYPE_P2P_CLIENT:
1760 break;
1761 case NL80211_IFTYPE_P2P_GO:
1762 if (sdata->local->ops->hw_scan)
1763 break;
1764 /*
1765 * FIXME: implement NoA while scanning in software,
1766 * for now fall through to allow scanning only when
1767 * beaconing hasn't been configured yet
1768 */
1769 case NL80211_IFTYPE_AP:
1770 if (sdata->u.ap.beacon)
1771 return -EOPNOTSUPP;
1772 break;
1773 default:
1774 return -EOPNOTSUPP;
1775 }
1776
1777 return ieee80211_request_scan(sdata, req);
1778 }
1779
1780 static int
1781 ieee80211_sched_scan_start(struct wiphy *wiphy,
1782 struct net_device *dev,
1783 struct cfg80211_sched_scan_request *req)
1784 {
1785 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1786
1787 if (!sdata->local->ops->sched_scan_start)
1788 return -EOPNOTSUPP;
1789
1790 return ieee80211_request_sched_scan_start(sdata, req);
1791 }
1792
1793 static int
1794 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1795 {
1796 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1797
1798 if (!sdata->local->ops->sched_scan_stop)
1799 return -EOPNOTSUPP;
1800
1801 return ieee80211_request_sched_scan_stop(sdata);
1802 }
1803
1804 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1805 struct cfg80211_auth_request *req)
1806 {
1807 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1808 }
1809
1810 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1811 struct cfg80211_assoc_request *req)
1812 {
1813 struct ieee80211_local *local = wiphy_priv(wiphy);
1814 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1815
1816 switch (ieee80211_get_channel_mode(local, sdata)) {
1817 case CHAN_MODE_HOPPING:
1818 return -EBUSY;
1819 case CHAN_MODE_FIXED:
1820 if (local->oper_channel == req->bss->channel)
1821 break;
1822 return -EBUSY;
1823 case CHAN_MODE_UNDEFINED:
1824 break;
1825 }
1826
1827 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1828 }
1829
1830 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1831 struct cfg80211_deauth_request *req)
1832 {
1833 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1834 }
1835
1836 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1837 struct cfg80211_disassoc_request *req)
1838 {
1839 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1840 }
1841
1842 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1843 struct cfg80211_ibss_params *params)
1844 {
1845 struct ieee80211_local *local = wiphy_priv(wiphy);
1846 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1847
1848 switch (ieee80211_get_channel_mode(local, sdata)) {
1849 case CHAN_MODE_HOPPING:
1850 return -EBUSY;
1851 case CHAN_MODE_FIXED:
1852 if (!params->channel_fixed)
1853 return -EBUSY;
1854 if (local->oper_channel == params->channel)
1855 break;
1856 return -EBUSY;
1857 case CHAN_MODE_UNDEFINED:
1858 break;
1859 }
1860
1861 return ieee80211_ibss_join(sdata, params);
1862 }
1863
1864 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1865 {
1866 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1867
1868 return ieee80211_ibss_leave(sdata);
1869 }
1870
1871 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1872 {
1873 struct ieee80211_local *local = wiphy_priv(wiphy);
1874 int err;
1875
1876 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1877 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1878
1879 if (err)
1880 return err;
1881 }
1882
1883 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1884 err = drv_set_coverage_class(local, wiphy->coverage_class);
1885
1886 if (err)
1887 return err;
1888 }
1889
1890 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1891 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1892
1893 if (err)
1894 return err;
1895 }
1896
1897 if (changed & WIPHY_PARAM_RETRY_SHORT)
1898 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1899 if (changed & WIPHY_PARAM_RETRY_LONG)
1900 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1901 if (changed &
1902 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1903 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1904
1905 return 0;
1906 }
1907
1908 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1909 enum nl80211_tx_power_setting type, int mbm)
1910 {
1911 struct ieee80211_local *local = wiphy_priv(wiphy);
1912 struct ieee80211_channel *chan = local->hw.conf.channel;
1913 u32 changes = 0;
1914
1915 switch (type) {
1916 case NL80211_TX_POWER_AUTOMATIC:
1917 local->user_power_level = -1;
1918 break;
1919 case NL80211_TX_POWER_LIMITED:
1920 if (mbm < 0 || (mbm % 100))
1921 return -EOPNOTSUPP;
1922 local->user_power_level = MBM_TO_DBM(mbm);
1923 break;
1924 case NL80211_TX_POWER_FIXED:
1925 if (mbm < 0 || (mbm % 100))
1926 return -EOPNOTSUPP;
1927 /* TODO: move to cfg80211 when it knows the channel */
1928 if (MBM_TO_DBM(mbm) > chan->max_power)
1929 return -EINVAL;
1930 local->user_power_level = MBM_TO_DBM(mbm);
1931 break;
1932 }
1933
1934 ieee80211_hw_config(local, changes);
1935
1936 return 0;
1937 }
1938
1939 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1940 {
1941 struct ieee80211_local *local = wiphy_priv(wiphy);
1942
1943 *dbm = local->hw.conf.power_level;
1944
1945 return 0;
1946 }
1947
1948 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1949 const u8 *addr)
1950 {
1951 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1952
1953 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1954
1955 return 0;
1956 }
1957
1958 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1959 {
1960 struct ieee80211_local *local = wiphy_priv(wiphy);
1961
1962 drv_rfkill_poll(local);
1963 }
1964
1965 #ifdef CONFIG_NL80211_TESTMODE
1966 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1967 {
1968 struct ieee80211_local *local = wiphy_priv(wiphy);
1969
1970 if (!local->ops->testmode_cmd)
1971 return -EOPNOTSUPP;
1972
1973 return local->ops->testmode_cmd(&local->hw, data, len);
1974 }
1975
1976 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1977 struct sk_buff *skb,
1978 struct netlink_callback *cb,
1979 void *data, int len)
1980 {
1981 struct ieee80211_local *local = wiphy_priv(wiphy);
1982
1983 if (!local->ops->testmode_dump)
1984 return -EOPNOTSUPP;
1985
1986 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1987 }
1988 #endif
1989
1990 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1991 enum ieee80211_smps_mode smps_mode)
1992 {
1993 const u8 *ap;
1994 enum ieee80211_smps_mode old_req;
1995 int err;
1996
1997 lockdep_assert_held(&sdata->u.mgd.mtx);
1998
1999 old_req = sdata->u.mgd.req_smps;
2000 sdata->u.mgd.req_smps = smps_mode;
2001
2002 if (old_req == smps_mode &&
2003 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2004 return 0;
2005
2006 /*
2007 * If not associated, or current association is not an HT
2008 * association, there's no need to send an action frame.
2009 */
2010 if (!sdata->u.mgd.associated ||
2011 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2012 mutex_lock(&sdata->local->iflist_mtx);
2013 ieee80211_recalc_smps(sdata->local);
2014 mutex_unlock(&sdata->local->iflist_mtx);
2015 return 0;
2016 }
2017
2018 ap = sdata->u.mgd.associated->bssid;
2019
2020 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2021 if (sdata->u.mgd.powersave)
2022 smps_mode = IEEE80211_SMPS_DYNAMIC;
2023 else
2024 smps_mode = IEEE80211_SMPS_OFF;
2025 }
2026
2027 /* send SM PS frame to AP */
2028 err = ieee80211_send_smps_action(sdata, smps_mode,
2029 ap, ap);
2030 if (err)
2031 sdata->u.mgd.req_smps = old_req;
2032
2033 return err;
2034 }
2035
2036 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2037 bool enabled, int timeout)
2038 {
2039 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2040 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2041
2042 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2043 return -EOPNOTSUPP;
2044
2045 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2046 return -EOPNOTSUPP;
2047
2048 if (enabled == sdata->u.mgd.powersave &&
2049 timeout == local->dynamic_ps_forced_timeout)
2050 return 0;
2051
2052 sdata->u.mgd.powersave = enabled;
2053 local->dynamic_ps_forced_timeout = timeout;
2054
2055 /* no change, but if automatic follow powersave */
2056 mutex_lock(&sdata->u.mgd.mtx);
2057 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2058 mutex_unlock(&sdata->u.mgd.mtx);
2059
2060 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2061 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2062
2063 ieee80211_recalc_ps(local, -1);
2064
2065 return 0;
2066 }
2067
2068 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2069 struct net_device *dev,
2070 s32 rssi_thold, u32 rssi_hyst)
2071 {
2072 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2073 struct ieee80211_vif *vif = &sdata->vif;
2074 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2075
2076 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2077 rssi_hyst == bss_conf->cqm_rssi_hyst)
2078 return 0;
2079
2080 bss_conf->cqm_rssi_thold = rssi_thold;
2081 bss_conf->cqm_rssi_hyst = rssi_hyst;
2082
2083 /* tell the driver upon association, unless already associated */
2084 if (sdata->u.mgd.associated &&
2085 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2086 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2087
2088 return 0;
2089 }
2090
2091 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2092 struct net_device *dev,
2093 const u8 *addr,
2094 const struct cfg80211_bitrate_mask *mask)
2095 {
2096 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2097 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2098 int i, ret;
2099
2100 if (!ieee80211_sdata_running(sdata))
2101 return -ENETDOWN;
2102
2103 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2104 ret = drv_set_bitrate_mask(local, sdata, mask);
2105 if (ret)
2106 return ret;
2107 }
2108
2109 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2110 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2111 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2112 sizeof(mask->control[i].mcs));
2113 }
2114
2115 return 0;
2116 }
2117
2118 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2119 struct ieee80211_sub_if_data *sdata,
2120 struct ieee80211_channel *channel,
2121 enum nl80211_channel_type channel_type,
2122 unsigned int duration, u64 *cookie,
2123 struct sk_buff *txskb)
2124 {
2125 struct ieee80211_roc_work *roc, *tmp;
2126 bool queued = false;
2127 int ret;
2128
2129 lockdep_assert_held(&local->mtx);
2130
2131 roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2132 if (!roc)
2133 return -ENOMEM;
2134
2135 roc->chan = channel;
2136 roc->chan_type = channel_type;
2137 roc->duration = duration;
2138 roc->req_duration = duration;
2139 roc->frame = txskb;
2140 roc->mgmt_tx_cookie = (unsigned long)txskb;
2141 roc->sdata = sdata;
2142 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2143 INIT_LIST_HEAD(&roc->dependents);
2144
2145 /* if there's one pending or we're scanning, queue this one */
2146 if (!list_empty(&local->roc_list) || local->scanning)
2147 goto out_check_combine;
2148
2149 /* if not HW assist, just queue & schedule work */
2150 if (!local->ops->remain_on_channel) {
2151 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2152 goto out_queue;
2153 }
2154
2155 /* otherwise actually kick it off here (for error handling) */
2156
2157 /*
2158 * If the duration is zero, then the driver
2159 * wouldn't actually do anything. Set it to
2160 * 10 for now.
2161 *
2162 * TODO: cancel the off-channel operation
2163 * when we get the SKB's TX status and
2164 * the wait time was zero before.
2165 */
2166 if (!duration)
2167 duration = 10;
2168
2169 ret = drv_remain_on_channel(local, channel, channel_type, duration);
2170 if (ret) {
2171 kfree(roc);
2172 return ret;
2173 }
2174
2175 roc->started = true;
2176 goto out_queue;
2177
2178 out_check_combine:
2179 list_for_each_entry(tmp, &local->roc_list, list) {
2180 if (tmp->chan != channel || tmp->chan_type != channel_type)
2181 continue;
2182
2183 /*
2184 * Extend this ROC if possible:
2185 *
2186 * If it hasn't started yet, just increase the duration
2187 * and add the new one to the list of dependents.
2188 */
2189 if (!tmp->started) {
2190 list_add_tail(&roc->list, &tmp->dependents);
2191 tmp->duration = max(tmp->duration, roc->duration);
2192 queued = true;
2193 break;
2194 }
2195
2196 /* If it has already started, it's more difficult ... */
2197 if (local->ops->remain_on_channel) {
2198 unsigned long j = jiffies;
2199
2200 /*
2201 * In the offloaded ROC case, if it hasn't begun, add
2202 * this new one to the dependent list to be handled
2203 * when the the master one begins. If it has begun,
2204 * check that there's still a minimum time left and
2205 * if so, start this one, transmitting the frame, but
2206 * add it to the list directly after this one with a
2207 * a reduced time so we'll ask the driver to execute
2208 * it right after finishing the previous one, in the
2209 * hope that it'll also be executed right afterwards,
2210 * effectively extending the old one.
2211 * If there's no minimum time left, just add it to the
2212 * normal list.
2213 */
2214 if (!tmp->hw_begun) {
2215 list_add_tail(&roc->list, &tmp->dependents);
2216 queued = true;
2217 break;
2218 }
2219
2220 if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2221 tmp->hw_start_time +
2222 msecs_to_jiffies(tmp->duration))) {
2223 int new_dur;
2224
2225 ieee80211_handle_roc_started(roc);
2226
2227 new_dur = roc->duration -
2228 jiffies_to_msecs(tmp->hw_start_time +
2229 msecs_to_jiffies(
2230 tmp->duration) -
2231 j);
2232
2233 if (new_dur > 0) {
2234 /* add right after tmp */
2235 list_add(&roc->list, &tmp->list);
2236 } else {
2237 list_add_tail(&roc->list,
2238 &tmp->dependents);
2239 }
2240 queued = true;
2241 }
2242 } else if (del_timer_sync(&tmp->work.timer)) {
2243 unsigned long new_end;
2244
2245 /*
2246 * In the software ROC case, cancel the timer, if
2247 * that fails then the finish work is already
2248 * queued/pending and thus we queue the new ROC
2249 * normally, if that succeeds then we can extend
2250 * the timer duration and TX the frame (if any.)
2251 */
2252
2253 list_add_tail(&roc->list, &tmp->dependents);
2254 queued = true;
2255
2256 new_end = jiffies + msecs_to_jiffies(roc->duration);
2257
2258 /* ok, it was started & we canceled timer */
2259 if (time_after(new_end, tmp->work.timer.expires))
2260 mod_timer(&tmp->work.timer, new_end);
2261 else
2262 add_timer(&tmp->work.timer);
2263
2264 ieee80211_handle_roc_started(roc);
2265 }
2266 break;
2267 }
2268
2269 out_queue:
2270 if (!queued)
2271 list_add_tail(&roc->list, &local->roc_list);
2272
2273 /*
2274 * cookie is either the roc (for normal roc)
2275 * or the SKB (for mgmt TX)
2276 */
2277 if (txskb)
2278 *cookie = (unsigned long)txskb;
2279 else
2280 *cookie = (unsigned long)roc;
2281
2282 return 0;
2283 }
2284
2285 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2286 struct net_device *dev,
2287 struct ieee80211_channel *chan,
2288 enum nl80211_channel_type channel_type,
2289 unsigned int duration,
2290 u64 *cookie)
2291 {
2292 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2293 struct ieee80211_local *local = sdata->local;
2294 int ret;
2295
2296 mutex_lock(&local->mtx);
2297 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2298 duration, cookie, NULL);
2299 mutex_unlock(&local->mtx);
2300
2301 return ret;
2302 }
2303
2304 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2305 u64 cookie, bool mgmt_tx)
2306 {
2307 struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2308 int ret;
2309
2310 mutex_lock(&local->mtx);
2311 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2312 if (!mgmt_tx && (unsigned long)roc != cookie)
2313 continue;
2314 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2315 continue;
2316
2317 found = roc;
2318 break;
2319 }
2320
2321 if (!found) {
2322 mutex_unlock(&local->mtx);
2323 return -ENOENT;
2324 }
2325
2326 if (local->ops->remain_on_channel) {
2327 if (found->started) {
2328 ret = drv_cancel_remain_on_channel(local);
2329 if (WARN_ON_ONCE(ret)) {
2330 mutex_unlock(&local->mtx);
2331 return ret;
2332 }
2333 }
2334
2335 list_del(&found->list);
2336
2337 ieee80211_run_deferred_scan(local);
2338 ieee80211_start_next_roc(local);
2339 mutex_unlock(&local->mtx);
2340
2341 ieee80211_roc_notify_destroy(found);
2342 } else {
2343 /* work may be pending so use it all the time */
2344 found->abort = true;
2345 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2346
2347 mutex_unlock(&local->mtx);
2348
2349 /* work will clean up etc */
2350 flush_delayed_work(&found->work);
2351 }
2352
2353 return 0;
2354 }
2355
2356 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2357 struct net_device *dev,
2358 u64 cookie)
2359 {
2360 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2361 struct ieee80211_local *local = sdata->local;
2362
2363 return ieee80211_cancel_roc(local, cookie, false);
2364 }
2365
2366 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2367 struct ieee80211_channel *chan, bool offchan,
2368 enum nl80211_channel_type channel_type,
2369 bool channel_type_valid, unsigned int wait,
2370 const u8 *buf, size_t len, bool no_cck,
2371 bool dont_wait_for_ack, u64 *cookie)
2372 {
2373 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2374 struct ieee80211_local *local = sdata->local;
2375 struct sk_buff *skb;
2376 struct sta_info *sta;
2377 const struct ieee80211_mgmt *mgmt = (void *)buf;
2378 bool need_offchan = false;
2379 u32 flags;
2380 int ret;
2381
2382 if (dont_wait_for_ack)
2383 flags = IEEE80211_TX_CTL_NO_ACK;
2384 else
2385 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2386 IEEE80211_TX_CTL_REQ_TX_STATUS;
2387
2388 if (no_cck)
2389 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2390
2391 switch (sdata->vif.type) {
2392 case NL80211_IFTYPE_ADHOC:
2393 if (!sdata->vif.bss_conf.ibss_joined)
2394 need_offchan = true;
2395 /* fall through */
2396 #ifdef CONFIG_MAC80211_MESH
2397 case NL80211_IFTYPE_MESH_POINT:
2398 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2399 !sdata->u.mesh.mesh_id_len)
2400 need_offchan = true;
2401 /* fall through */
2402 #endif
2403 case NL80211_IFTYPE_AP:
2404 case NL80211_IFTYPE_AP_VLAN:
2405 case NL80211_IFTYPE_P2P_GO:
2406 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2407 !ieee80211_vif_is_mesh(&sdata->vif) &&
2408 !rcu_access_pointer(sdata->bss->beacon))
2409 need_offchan = true;
2410 if (!ieee80211_is_action(mgmt->frame_control) ||
2411 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2412 break;
2413 rcu_read_lock();
2414 sta = sta_info_get(sdata, mgmt->da);
2415 rcu_read_unlock();
2416 if (!sta)
2417 return -ENOLINK;
2418 break;
2419 case NL80211_IFTYPE_STATION:
2420 case NL80211_IFTYPE_P2P_CLIENT:
2421 if (!sdata->u.mgd.associated)
2422 need_offchan = true;
2423 break;
2424 default:
2425 return -EOPNOTSUPP;
2426 }
2427
2428 mutex_lock(&local->mtx);
2429
2430 /* Check if the operating channel is the requested channel */
2431 if (!need_offchan) {
2432 need_offchan = chan != local->oper_channel;
2433 if (channel_type_valid &&
2434 channel_type != local->_oper_channel_type)
2435 need_offchan = true;
2436 }
2437
2438 if (need_offchan && !offchan) {
2439 ret = -EBUSY;
2440 goto out_unlock;
2441 }
2442
2443 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2444 if (!skb) {
2445 ret = -ENOMEM;
2446 goto out_unlock;
2447 }
2448 skb_reserve(skb, local->hw.extra_tx_headroom);
2449
2450 memcpy(skb_put(skb, len), buf, len);
2451
2452 IEEE80211_SKB_CB(skb)->flags = flags;
2453
2454 skb->dev = sdata->dev;
2455
2456 if (!need_offchan) {
2457 ieee80211_tx_skb(sdata, skb);
2458 ret = 0;
2459 goto out_unlock;
2460 }
2461
2462 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2463 if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2464 IEEE80211_SKB_CB(skb)->hw_queue =
2465 local->hw.offchannel_tx_hw_queue;
2466
2467 /* This will handle all kinds of coalescing and immediate TX */
2468 ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2469 wait, cookie, skb);
2470 if (ret)
2471 kfree_skb(skb);
2472 out_unlock:
2473 mutex_unlock(&local->mtx);
2474 return ret;
2475 }
2476
2477 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2478 struct net_device *dev,
2479 u64 cookie)
2480 {
2481 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2482 struct ieee80211_local *local = sdata->local;
2483
2484 return ieee80211_cancel_roc(local, cookie, true);
2485 }
2486
2487 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2488 struct net_device *dev,
2489 u16 frame_type, bool reg)
2490 {
2491 struct ieee80211_local *local = wiphy_priv(wiphy);
2492
2493 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2494 return;
2495
2496 if (reg)
2497 local->probe_req_reg++;
2498 else
2499 local->probe_req_reg--;
2500
2501 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2502 }
2503
2504 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2505 {
2506 struct ieee80211_local *local = wiphy_priv(wiphy);
2507
2508 if (local->started)
2509 return -EOPNOTSUPP;
2510
2511 return drv_set_antenna(local, tx_ant, rx_ant);
2512 }
2513
2514 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2515 {
2516 struct ieee80211_local *local = wiphy_priv(wiphy);
2517
2518 return drv_get_antenna(local, tx_ant, rx_ant);
2519 }
2520
2521 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2522 {
2523 struct ieee80211_local *local = wiphy_priv(wiphy);
2524
2525 return drv_set_ringparam(local, tx, rx);
2526 }
2527
2528 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2529 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2530 {
2531 struct ieee80211_local *local = wiphy_priv(wiphy);
2532
2533 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2534 }
2535
2536 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2537 struct net_device *dev,
2538 struct cfg80211_gtk_rekey_data *data)
2539 {
2540 struct ieee80211_local *local = wiphy_priv(wiphy);
2541 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2542
2543 if (!local->ops->set_rekey_data)
2544 return -EOPNOTSUPP;
2545
2546 drv_set_rekey_data(local, sdata, data);
2547
2548 return 0;
2549 }
2550
2551 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2552 {
2553 u8 *pos = (void *)skb_put(skb, 7);
2554
2555 *pos++ = WLAN_EID_EXT_CAPABILITY;
2556 *pos++ = 5; /* len */
2557 *pos++ = 0x0;
2558 *pos++ = 0x0;
2559 *pos++ = 0x0;
2560 *pos++ = 0x0;
2561 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2562 }
2563
2564 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2565 {
2566 struct ieee80211_local *local = sdata->local;
2567 u16 capab;
2568
2569 capab = 0;
2570 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2571 return capab;
2572
2573 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2574 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2575 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2576 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2577
2578 return capab;
2579 }
2580
2581 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2582 u8 *peer, u8 *bssid)
2583 {
2584 struct ieee80211_tdls_lnkie *lnkid;
2585
2586 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2587
2588 lnkid->ie_type = WLAN_EID_LINK_ID;
2589 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2590
2591 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2592 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2593 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2594 }
2595
2596 static int
2597 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2598 u8 *peer, u8 action_code, u8 dialog_token,
2599 u16 status_code, struct sk_buff *skb)
2600 {
2601 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2602 struct ieee80211_tdls_data *tf;
2603
2604 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2605
2606 memcpy(tf->da, peer, ETH_ALEN);
2607 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2608 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2609 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2610
2611 switch (action_code) {
2612 case WLAN_TDLS_SETUP_REQUEST:
2613 tf->category = WLAN_CATEGORY_TDLS;
2614 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2615
2616 skb_put(skb, sizeof(tf->u.setup_req));
2617 tf->u.setup_req.dialog_token = dialog_token;
2618 tf->u.setup_req.capability =
2619 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2620
2621 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2622 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2623 ieee80211_tdls_add_ext_capab(skb);
2624 break;
2625 case WLAN_TDLS_SETUP_RESPONSE:
2626 tf->category = WLAN_CATEGORY_TDLS;
2627 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2628
2629 skb_put(skb, sizeof(tf->u.setup_resp));
2630 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2631 tf->u.setup_resp.dialog_token = dialog_token;
2632 tf->u.setup_resp.capability =
2633 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2634
2635 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2636 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2637 ieee80211_tdls_add_ext_capab(skb);
2638 break;
2639 case WLAN_TDLS_SETUP_CONFIRM:
2640 tf->category = WLAN_CATEGORY_TDLS;
2641 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2642
2643 skb_put(skb, sizeof(tf->u.setup_cfm));
2644 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2645 tf->u.setup_cfm.dialog_token = dialog_token;
2646 break;
2647 case WLAN_TDLS_TEARDOWN:
2648 tf->category = WLAN_CATEGORY_TDLS;
2649 tf->action_code = WLAN_TDLS_TEARDOWN;
2650
2651 skb_put(skb, sizeof(tf->u.teardown));
2652 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2653 break;
2654 case WLAN_TDLS_DISCOVERY_REQUEST:
2655 tf->category = WLAN_CATEGORY_TDLS;
2656 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2657
2658 skb_put(skb, sizeof(tf->u.discover_req));
2659 tf->u.discover_req.dialog_token = dialog_token;
2660 break;
2661 default:
2662 return -EINVAL;
2663 }
2664
2665 return 0;
2666 }
2667
2668 static int
2669 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2670 u8 *peer, u8 action_code, u8 dialog_token,
2671 u16 status_code, struct sk_buff *skb)
2672 {
2673 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2674 struct ieee80211_mgmt *mgmt;
2675
2676 mgmt = (void *)skb_put(skb, 24);
2677 memset(mgmt, 0, 24);
2678 memcpy(mgmt->da, peer, ETH_ALEN);
2679 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2680 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2681
2682 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2683 IEEE80211_STYPE_ACTION);
2684
2685 switch (action_code) {
2686 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2687 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2688 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2689 mgmt->u.action.u.tdls_discover_resp.action_code =
2690 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2691 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2692 dialog_token;
2693 mgmt->u.action.u.tdls_discover_resp.capability =
2694 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2695
2696 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2697 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2698 ieee80211_tdls_add_ext_capab(skb);
2699 break;
2700 default:
2701 return -EINVAL;
2702 }
2703
2704 return 0;
2705 }
2706
2707 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2708 u8 *peer, u8 action_code, u8 dialog_token,
2709 u16 status_code, const u8 *extra_ies,
2710 size_t extra_ies_len)
2711 {
2712 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2713 struct ieee80211_local *local = sdata->local;
2714 struct ieee80211_tx_info *info;
2715 struct sk_buff *skb = NULL;
2716 bool send_direct;
2717 int ret;
2718
2719 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2720 return -ENOTSUPP;
2721
2722 /* make sure we are in managed mode, and associated */
2723 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2724 !sdata->u.mgd.associated)
2725 return -EINVAL;
2726
2727 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2728 pr_debug("TDLS mgmt action %d peer %pM\n", action_code, peer);
2729 #endif
2730
2731 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2732 max(sizeof(struct ieee80211_mgmt),
2733 sizeof(struct ieee80211_tdls_data)) +
2734 50 + /* supported rates */
2735 7 + /* ext capab */
2736 extra_ies_len +
2737 sizeof(struct ieee80211_tdls_lnkie));
2738 if (!skb)
2739 return -ENOMEM;
2740
2741 info = IEEE80211_SKB_CB(skb);
2742 skb_reserve(skb, local->hw.extra_tx_headroom);
2743
2744 switch (action_code) {
2745 case WLAN_TDLS_SETUP_REQUEST:
2746 case WLAN_TDLS_SETUP_RESPONSE:
2747 case WLAN_TDLS_SETUP_CONFIRM:
2748 case WLAN_TDLS_TEARDOWN:
2749 case WLAN_TDLS_DISCOVERY_REQUEST:
2750 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2751 action_code, dialog_token,
2752 status_code, skb);
2753 send_direct = false;
2754 break;
2755 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2756 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2757 dialog_token, status_code,
2758 skb);
2759 send_direct = true;
2760 break;
2761 default:
2762 ret = -ENOTSUPP;
2763 break;
2764 }
2765
2766 if (ret < 0)
2767 goto fail;
2768
2769 if (extra_ies_len)
2770 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2771
2772 /* the TDLS link IE is always added last */
2773 switch (action_code) {
2774 case WLAN_TDLS_SETUP_REQUEST:
2775 case WLAN_TDLS_SETUP_CONFIRM:
2776 case WLAN_TDLS_TEARDOWN:
2777 case WLAN_TDLS_DISCOVERY_REQUEST:
2778 /* we are the initiator */
2779 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2780 sdata->u.mgd.bssid);
2781 break;
2782 case WLAN_TDLS_SETUP_RESPONSE:
2783 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2784 /* we are the responder */
2785 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2786 sdata->u.mgd.bssid);
2787 break;
2788 default:
2789 ret = -ENOTSUPP;
2790 goto fail;
2791 }
2792
2793 if (send_direct) {
2794 ieee80211_tx_skb(sdata, skb);
2795 return 0;
2796 }
2797
2798 /*
2799 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2800 * we should default to AC_VI.
2801 */
2802 switch (action_code) {
2803 case WLAN_TDLS_SETUP_REQUEST:
2804 case WLAN_TDLS_SETUP_RESPONSE:
2805 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2806 skb->priority = 2;
2807 break;
2808 default:
2809 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2810 skb->priority = 5;
2811 break;
2812 }
2813
2814 /* disable bottom halves when entering the Tx path */
2815 local_bh_disable();
2816 ret = ieee80211_subif_start_xmit(skb, dev);
2817 local_bh_enable();
2818
2819 return ret;
2820
2821 fail:
2822 dev_kfree_skb(skb);
2823 return ret;
2824 }
2825
2826 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2827 u8 *peer, enum nl80211_tdls_operation oper)
2828 {
2829 struct sta_info *sta;
2830 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2831
2832 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2833 return -ENOTSUPP;
2834
2835 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2836 return -EINVAL;
2837
2838 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2839 pr_debug("TDLS oper %d peer %pM\n", oper, peer);
2840 #endif
2841
2842 switch (oper) {
2843 case NL80211_TDLS_ENABLE_LINK:
2844 rcu_read_lock();
2845 sta = sta_info_get(sdata, peer);
2846 if (!sta) {
2847 rcu_read_unlock();
2848 return -ENOLINK;
2849 }
2850
2851 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2852 rcu_read_unlock();
2853 break;
2854 case NL80211_TDLS_DISABLE_LINK:
2855 return sta_info_destroy_addr(sdata, peer);
2856 case NL80211_TDLS_TEARDOWN:
2857 case NL80211_TDLS_SETUP:
2858 case NL80211_TDLS_DISCOVERY_REQ:
2859 /* We don't support in-driver setup/teardown/discovery */
2860 return -ENOTSUPP;
2861 default:
2862 return -ENOTSUPP;
2863 }
2864
2865 return 0;
2866 }
2867
2868 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2869 const u8 *peer, u64 *cookie)
2870 {
2871 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2872 struct ieee80211_local *local = sdata->local;
2873 struct ieee80211_qos_hdr *nullfunc;
2874 struct sk_buff *skb;
2875 int size = sizeof(*nullfunc);
2876 __le16 fc;
2877 bool qos;
2878 struct ieee80211_tx_info *info;
2879 struct sta_info *sta;
2880
2881 rcu_read_lock();
2882 sta = sta_info_get(sdata, peer);
2883 if (sta) {
2884 qos = test_sta_flag(sta, WLAN_STA_WME);
2885 rcu_read_unlock();
2886 } else {
2887 rcu_read_unlock();
2888 return -ENOLINK;
2889 }
2890
2891 if (qos) {
2892 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2893 IEEE80211_STYPE_QOS_NULLFUNC |
2894 IEEE80211_FCTL_FROMDS);
2895 } else {
2896 size -= 2;
2897 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2898 IEEE80211_STYPE_NULLFUNC |
2899 IEEE80211_FCTL_FROMDS);
2900 }
2901
2902 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2903 if (!skb)
2904 return -ENOMEM;
2905
2906 skb->dev = dev;
2907
2908 skb_reserve(skb, local->hw.extra_tx_headroom);
2909
2910 nullfunc = (void *) skb_put(skb, size);
2911 nullfunc->frame_control = fc;
2912 nullfunc->duration_id = 0;
2913 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2914 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2915 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2916 nullfunc->seq_ctrl = 0;
2917
2918 info = IEEE80211_SKB_CB(skb);
2919
2920 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2921 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2922
2923 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2924 skb->priority = 7;
2925 if (qos)
2926 nullfunc->qos_ctrl = cpu_to_le16(7);
2927
2928 local_bh_disable();
2929 ieee80211_xmit(sdata, skb);
2930 local_bh_enable();
2931
2932 *cookie = (unsigned long) skb;
2933 return 0;
2934 }
2935
2936 static struct ieee80211_channel *
2937 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2938 enum nl80211_channel_type *type)
2939 {
2940 struct ieee80211_local *local = wiphy_priv(wiphy);
2941
2942 *type = local->_oper_channel_type;
2943 return local->oper_channel;
2944 }
2945
2946 #ifdef CONFIG_PM
2947 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2948 {
2949 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2950 }
2951 #endif
2952
2953 struct cfg80211_ops mac80211_config_ops = {
2954 .add_virtual_intf = ieee80211_add_iface,
2955 .del_virtual_intf = ieee80211_del_iface,
2956 .change_virtual_intf = ieee80211_change_iface,
2957 .add_key = ieee80211_add_key,
2958 .del_key = ieee80211_del_key,
2959 .get_key = ieee80211_get_key,
2960 .set_default_key = ieee80211_config_default_key,
2961 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2962 .start_ap = ieee80211_start_ap,
2963 .change_beacon = ieee80211_change_beacon,
2964 .stop_ap = ieee80211_stop_ap,
2965 .add_station = ieee80211_add_station,
2966 .del_station = ieee80211_del_station,
2967 .change_station = ieee80211_change_station,
2968 .get_station = ieee80211_get_station,
2969 .dump_station = ieee80211_dump_station,
2970 .dump_survey = ieee80211_dump_survey,
2971 #ifdef CONFIG_MAC80211_MESH
2972 .add_mpath = ieee80211_add_mpath,
2973 .del_mpath = ieee80211_del_mpath,
2974 .change_mpath = ieee80211_change_mpath,
2975 .get_mpath = ieee80211_get_mpath,
2976 .dump_mpath = ieee80211_dump_mpath,
2977 .update_mesh_config = ieee80211_update_mesh_config,
2978 .get_mesh_config = ieee80211_get_mesh_config,
2979 .join_mesh = ieee80211_join_mesh,
2980 .leave_mesh = ieee80211_leave_mesh,
2981 #endif
2982 .change_bss = ieee80211_change_bss,
2983 .set_txq_params = ieee80211_set_txq_params,
2984 .set_monitor_channel = ieee80211_set_monitor_channel,
2985 .suspend = ieee80211_suspend,
2986 .resume = ieee80211_resume,
2987 .scan = ieee80211_scan,
2988 .sched_scan_start = ieee80211_sched_scan_start,
2989 .sched_scan_stop = ieee80211_sched_scan_stop,
2990 .auth = ieee80211_auth,
2991 .assoc = ieee80211_assoc,
2992 .deauth = ieee80211_deauth,
2993 .disassoc = ieee80211_disassoc,
2994 .join_ibss = ieee80211_join_ibss,
2995 .leave_ibss = ieee80211_leave_ibss,
2996 .set_wiphy_params = ieee80211_set_wiphy_params,
2997 .set_tx_power = ieee80211_set_tx_power,
2998 .get_tx_power = ieee80211_get_tx_power,
2999 .set_wds_peer = ieee80211_set_wds_peer,
3000 .rfkill_poll = ieee80211_rfkill_poll,
3001 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3002 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3003 .set_power_mgmt = ieee80211_set_power_mgmt,
3004 .set_bitrate_mask = ieee80211_set_bitrate_mask,
3005 .remain_on_channel = ieee80211_remain_on_channel,
3006 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3007 .mgmt_tx = ieee80211_mgmt_tx,
3008 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3009 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3010 .mgmt_frame_register = ieee80211_mgmt_frame_register,
3011 .set_antenna = ieee80211_set_antenna,
3012 .get_antenna = ieee80211_get_antenna,
3013 .set_ringparam = ieee80211_set_ringparam,
3014 .get_ringparam = ieee80211_get_ringparam,
3015 .set_rekey_data = ieee80211_set_rekey_data,
3016 .tdls_oper = ieee80211_tdls_oper,
3017 .tdls_mgmt = ieee80211_tdls_mgmt,
3018 .probe_client = ieee80211_probe_client,
3019 .get_channel = ieee80211_wiphy_get_channel,
3020 .set_noack_map = ieee80211_set_noack_map,
3021 #ifdef CONFIG_PM
3022 .set_wakeup = ieee80211_set_wakeup,
3023 #endif
3024 .get_et_sset_count = ieee80211_get_et_sset_count,
3025 .get_et_stats = ieee80211_get_et_stats,
3026 .get_et_strings = ieee80211_get_et_strings,
3027 };
Linux kernel - Deliverables
This page took 0.094996 seconds and 5 git commands to generate.