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Xilinx: ARM: Update Zynq defconfig to enable USB errata.
[linux-2.6-xlnx.git] / net / mac80211 / cfg.c
blob7d5108a867ad9ec5341fc5122a2b65cd792846c3
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_probe_resp(struct ieee80211_sub_if_data *sdata,
678 const u8 *resp, size_t resp_len)
679 {
680 struct sk_buff *new, *old;
681
682 if (!resp || !resp_len)
683 return 1;
684
685 old = rtnl_dereference(sdata->u.ap.probe_resp);
686
687 new = dev_alloc_skb(resp_len);
688 if (!new)
689 return -ENOMEM;
690
691 memcpy(skb_put(new, resp_len), resp, resp_len);
692
693 rcu_assign_pointer(sdata->u.ap.probe_resp, new);
694 if (old) {
695 /* TODO: use call_rcu() */
696 synchronize_rcu();
697 dev_kfree_skb(old);
698 }
699
700 return 0;
701 }
702
703 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
704 struct cfg80211_beacon_data *params)
705 {
706 struct beacon_data *new, *old;
707 int new_head_len, new_tail_len;
708 int size, err;
709 u32 changed = BSS_CHANGED_BEACON;
710
711 old = rtnl_dereference(sdata->u.ap.beacon);
712
713 /* Need to have a beacon head if we don't have one yet */
714 if (!params->head && !old)
715 return -EINVAL;
716
717 /* new or old head? */
718 if (params->head)
719 new_head_len = params->head_len;
720 else
721 new_head_len = old->head_len;
722
723 /* new or old tail? */
724 if (params->tail || !old)
725 /* params->tail_len will be zero for !params->tail */
726 new_tail_len = params->tail_len;
727 else
728 new_tail_len = old->tail_len;
729
730 size = sizeof(*new) + new_head_len + new_tail_len;
731
732 new = kzalloc(size, GFP_KERNEL);
733 if (!new)
734 return -ENOMEM;
735
736 /* start filling the new info now */
737
738 /*
739 * pointers go into the block we allocated,
740 * memory is | beacon_data | head | tail |
741 */
742 new->head = ((u8 *) new) + sizeof(*new);
743 new->tail = new->head + new_head_len;
744 new->head_len = new_head_len;
745 new->tail_len = new_tail_len;
746
747 /* copy in head */
748 if (params->head)
749 memcpy(new->head, params->head, new_head_len);
750 else
751 memcpy(new->head, old->head, new_head_len);
752
753 /* copy in optional tail */
754 if (params->tail)
755 memcpy(new->tail, params->tail, new_tail_len);
756 else
757 if (old)
758 memcpy(new->tail, old->tail, new_tail_len);
759
760 err = ieee80211_set_probe_resp(sdata, params->probe_resp,
761 params->probe_resp_len);
762 if (err < 0)
763 return err;
764 if (err == 0)
765 changed |= BSS_CHANGED_AP_PROBE_RESP;
766
767 rcu_assign_pointer(sdata->u.ap.beacon, new);
768
769 if (old)
770 kfree_rcu(old, rcu_head);
771
772 return changed;
773 }
774
775 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
776 struct cfg80211_ap_settings *params)
777 {
778 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
779 struct beacon_data *old;
780 struct ieee80211_sub_if_data *vlan;
781 u32 changed = BSS_CHANGED_BEACON_INT |
782 BSS_CHANGED_BEACON_ENABLED |
783 BSS_CHANGED_BEACON |
784 BSS_CHANGED_SSID;
785 int err;
786
787 old = rtnl_dereference(sdata->u.ap.beacon);
788 if (old)
789 return -EALREADY;
790
791 /*
792 * Apply control port protocol, this allows us to
793 * not encrypt dynamic WEP control frames.
794 */
795 sdata->control_port_protocol = params->crypto.control_port_ethertype;
796 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
797 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
798 vlan->control_port_protocol =
799 params->crypto.control_port_ethertype;
800 vlan->control_port_no_encrypt =
801 params->crypto.control_port_no_encrypt;
802 }
803
804 sdata->vif.bss_conf.beacon_int = params->beacon_interval;
805 sdata->vif.bss_conf.dtim_period = params->dtim_period;
806
807 sdata->vif.bss_conf.ssid_len = params->ssid_len;
808 if (params->ssid_len)
809 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
810 params->ssid_len);
811 sdata->vif.bss_conf.hidden_ssid =
812 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
813
814 err = ieee80211_assign_beacon(sdata, &params->beacon);
815 if (err < 0)
816 return err;
817 changed |= err;
818
819 ieee80211_bss_info_change_notify(sdata, changed);
820
821 netif_carrier_on(dev);
822 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
823 netif_carrier_on(vlan->dev);
824
825 return 0;
826 }
827
828 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
829 struct cfg80211_beacon_data *params)
830 {
831 struct ieee80211_sub_if_data *sdata;
832 struct beacon_data *old;
833 int err;
834
835 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
836
837 old = rtnl_dereference(sdata->u.ap.beacon);
838 if (!old)
839 return -ENOENT;
840
841 err = ieee80211_assign_beacon(sdata, params);
842 if (err < 0)
843 return err;
844 ieee80211_bss_info_change_notify(sdata, err);
845 return 0;
846 }
847
848 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
849 {
850 struct ieee80211_sub_if_data *sdata, *vlan;
851 struct beacon_data *old;
852
853 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
854
855 old = rtnl_dereference(sdata->u.ap.beacon);
856 if (!old)
857 return -ENOENT;
858
859 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
860 netif_carrier_off(vlan->dev);
861 netif_carrier_off(dev);
862
863 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
864
865 kfree_rcu(old, rcu_head);
866
867 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
868
869 return 0;
870 }
871
872 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
873 struct iapp_layer2_update {
874 u8 da[ETH_ALEN]; /* broadcast */
875 u8 sa[ETH_ALEN]; /* STA addr */
876 __be16 len; /* 6 */
877 u8 dsap; /* 0 */
878 u8 ssap; /* 0 */
879 u8 control;
880 u8 xid_info[3];
881 } __packed;
882
883 static void ieee80211_send_layer2_update(struct sta_info *sta)
884 {
885 struct iapp_layer2_update *msg;
886 struct sk_buff *skb;
887
888 /* Send Level 2 Update Frame to update forwarding tables in layer 2
889 * bridge devices */
890
891 skb = dev_alloc_skb(sizeof(*msg));
892 if (!skb)
893 return;
894 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
895
896 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
897 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
898
899 memset(msg->da, 0xff, ETH_ALEN);
900 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
901 msg->len = htons(6);
902 msg->dsap = 0;
903 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
904 msg->control = 0xaf; /* XID response lsb.1111F101.
905 * F=0 (no poll command; unsolicited frame) */
906 msg->xid_info[0] = 0x81; /* XID format identifier */
907 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
908 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
909
910 skb->dev = sta->sdata->dev;
911 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
912 memset(skb->cb, 0, sizeof(skb->cb));
913 netif_rx_ni(skb);
914 }
915
916 static int sta_apply_parameters(struct ieee80211_local *local,
917 struct sta_info *sta,
918 struct station_parameters *params)
919 {
920 int ret = 0;
921 u32 rates;
922 int i, j;
923 struct ieee80211_supported_band *sband;
924 struct ieee80211_sub_if_data *sdata = sta->sdata;
925 u32 mask, set;
926
927 sband = local->hw.wiphy->bands[local->oper_channel->band];
928
929 mask = params->sta_flags_mask;
930 set = params->sta_flags_set;
931
932 /*
933 * In mesh mode, we can clear AUTHENTICATED flag but must
934 * also make ASSOCIATED follow appropriately for the driver
935 * API. See also below, after AUTHORIZED changes.
936 */
937 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
938 /* cfg80211 should not allow this in non-mesh modes */
939 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
940 return -EINVAL;
941
942 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
943 !test_sta_flag(sta, WLAN_STA_AUTH)) {
944 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
945 if (ret)
946 return ret;
947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
948 if (ret)
949 return ret;
950 }
951 }
952
953 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
954 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
955 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
956 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
957 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
958 if (ret)
959 return ret;
960 }
961
962 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
963 /* cfg80211 should not allow this in non-mesh modes */
964 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
965 return -EINVAL;
966
967 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
968 test_sta_flag(sta, WLAN_STA_AUTH)) {
969 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
970 if (ret)
971 return ret;
972 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
973 if (ret)
974 return ret;
975 }
976 }
977
978
979 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
980 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
981 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
982 else
983 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
984 }
985
986 if (mask & BIT(NL80211_STA_FLAG_WME)) {
987 if (set & BIT(NL80211_STA_FLAG_WME)) {
988 set_sta_flag(sta, WLAN_STA_WME);
989 sta->sta.wme = true;
990 } else {
991 clear_sta_flag(sta, WLAN_STA_WME);
992 sta->sta.wme = false;
993 }
994 }
995
996 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
997 if (set & BIT(NL80211_STA_FLAG_MFP))
998 set_sta_flag(sta, WLAN_STA_MFP);
999 else
1000 clear_sta_flag(sta, WLAN_STA_MFP);
1001 }
1002
1003 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1004 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1005 set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1006 else
1007 clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1008 }
1009
1010 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1011 sta->sta.uapsd_queues = params->uapsd_queues;
1012 sta->sta.max_sp = params->max_sp;
1013 }
1014
1015 /*
1016 * cfg80211 validates this (1-2007) and allows setting the AID
1017 * only when creating a new station entry
1018 */
1019 if (params->aid)
1020 sta->sta.aid = params->aid;
1021
1022 /*
1023 * FIXME: updating the following information is racy when this
1024 * function is called from ieee80211_change_station().
1025 * However, all this information should be static so
1026 * maybe we should just reject attemps to change it.
1027 */
1028
1029 if (params->listen_interval >= 0)
1030 sta->listen_interval = params->listen_interval;
1031
1032 if (params->supported_rates) {
1033 rates = 0;
1034
1035 for (i = 0; i < params->supported_rates_len; i++) {
1036 int rate = (params->supported_rates[i] & 0x7f) * 5;
1037 for (j = 0; j < sband->n_bitrates; j++) {
1038 if (sband->bitrates[j].bitrate == rate)
1039 rates |= BIT(j);
1040 }
1041 }
1042 sta->sta.supp_rates[local->oper_channel->band] = rates;
1043 }
1044
1045 if (params->ht_capa)
1046 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1047 params->ht_capa,
1048 &sta->sta.ht_cap);
1049
1050 if (ieee80211_vif_is_mesh(&sdata->vif)) {
1051 #ifdef CONFIG_MAC80211_MESH
1052 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1053 switch (params->plink_state) {
1054 case NL80211_PLINK_LISTEN:
1055 case NL80211_PLINK_ESTAB:
1056 case NL80211_PLINK_BLOCKED:
1057 sta->plink_state = params->plink_state;
1058 break;
1059 default:
1060 /* nothing */
1061 break;
1062 }
1063 else
1064 switch (params->plink_action) {
1065 case PLINK_ACTION_OPEN:
1066 mesh_plink_open(sta);
1067 break;
1068 case PLINK_ACTION_BLOCK:
1069 mesh_plink_block(sta);
1070 break;
1071 }
1072 #endif
1073 }
1074
1075 return 0;
1076 }
1077
1078 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1079 u8 *mac, struct station_parameters *params)
1080 {
1081 struct ieee80211_local *local = wiphy_priv(wiphy);
1082 struct sta_info *sta;
1083 struct ieee80211_sub_if_data *sdata;
1084 int err;
1085 int layer2_update;
1086
1087 if (params->vlan) {
1088 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1089
1090 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1091 sdata->vif.type != NL80211_IFTYPE_AP)
1092 return -EINVAL;
1093 } else
1094 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1095
1096 if (ether_addr_equal(mac, sdata->vif.addr))
1097 return -EINVAL;
1098
1099 if (is_multicast_ether_addr(mac))
1100 return -EINVAL;
1101
1102 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1103 if (!sta)
1104 return -ENOMEM;
1105
1106 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1107 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1108
1109 err = sta_apply_parameters(local, sta, params);
1110 if (err) {
1111 sta_info_free(local, sta);
1112 return err;
1113 }
1114
1115 /*
1116 * for TDLS, rate control should be initialized only when supported
1117 * rates are known.
1118 */
1119 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1120 rate_control_rate_init(sta);
1121
1122 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1123 sdata->vif.type == NL80211_IFTYPE_AP;
1124
1125 err = sta_info_insert_rcu(sta);
1126 if (err) {
1127 rcu_read_unlock();
1128 return err;
1129 }
1130
1131 if (layer2_update)
1132 ieee80211_send_layer2_update(sta);
1133
1134 rcu_read_unlock();
1135
1136 return 0;
1137 }
1138
1139 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1140 u8 *mac)
1141 {
1142 struct ieee80211_local *local = wiphy_priv(wiphy);
1143 struct ieee80211_sub_if_data *sdata;
1144
1145 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1146
1147 if (mac)
1148 return sta_info_destroy_addr_bss(sdata, mac);
1149
1150 sta_info_flush(local, sdata);
1151 return 0;
1152 }
1153
1154 static int ieee80211_change_station(struct wiphy *wiphy,
1155 struct net_device *dev,
1156 u8 *mac,
1157 struct station_parameters *params)
1158 {
1159 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1160 struct ieee80211_local *local = wiphy_priv(wiphy);
1161 struct sta_info *sta;
1162 struct ieee80211_sub_if_data *vlansdata;
1163 int err;
1164
1165 mutex_lock(&local->sta_mtx);
1166
1167 sta = sta_info_get_bss(sdata, mac);
1168 if (!sta) {
1169 mutex_unlock(&local->sta_mtx);
1170 return -ENOENT;
1171 }
1172
1173 /* in station mode, supported rates are only valid with TDLS */
1174 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1175 params->supported_rates &&
1176 !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1177 mutex_unlock(&local->sta_mtx);
1178 return -EINVAL;
1179 }
1180
1181 if (params->vlan && params->vlan != sta->sdata->dev) {
1182 bool prev_4addr = false;
1183 bool new_4addr = false;
1184
1185 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1186
1187 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1188 vlansdata->vif.type != NL80211_IFTYPE_AP) {
1189 mutex_unlock(&local->sta_mtx);
1190 return -EINVAL;
1191 }
1192
1193 if (params->vlan->ieee80211_ptr->use_4addr) {
1194 if (vlansdata->u.vlan.sta) {
1195 mutex_unlock(&local->sta_mtx);
1196 return -EBUSY;
1197 }
1198
1199 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1200 new_4addr = true;
1201 }
1202
1203 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1204 sta->sdata->u.vlan.sta) {
1205 rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1206 prev_4addr = true;
1207 }
1208
1209 sta->sdata = vlansdata;
1210
1211 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1212 prev_4addr != new_4addr) {
1213 if (new_4addr)
1214 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1215 else
1216 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1217 }
1218
1219 ieee80211_send_layer2_update(sta);
1220 }
1221
1222 err = sta_apply_parameters(local, sta, params);
1223 if (err) {
1224 mutex_unlock(&local->sta_mtx);
1225 return err;
1226 }
1227
1228 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1229 rate_control_rate_init(sta);
1230
1231 mutex_unlock(&local->sta_mtx);
1232
1233 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1234 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1235 ieee80211_recalc_ps(local, -1);
1236
1237 return 0;
1238 }
1239
1240 #ifdef CONFIG_MAC80211_MESH
1241 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1242 u8 *dst, u8 *next_hop)
1243 {
1244 struct ieee80211_sub_if_data *sdata;
1245 struct mesh_path *mpath;
1246 struct sta_info *sta;
1247 int err;
1248
1249 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1250
1251 rcu_read_lock();
1252 sta = sta_info_get(sdata, next_hop);
1253 if (!sta) {
1254 rcu_read_unlock();
1255 return -ENOENT;
1256 }
1257
1258 err = mesh_path_add(dst, sdata);
1259 if (err) {
1260 rcu_read_unlock();
1261 return err;
1262 }
1263
1264 mpath = mesh_path_lookup(dst, sdata);
1265 if (!mpath) {
1266 rcu_read_unlock();
1267 return -ENXIO;
1268 }
1269 mesh_path_fix_nexthop(mpath, sta);
1270
1271 rcu_read_unlock();
1272 return 0;
1273 }
1274
1275 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1276 u8 *dst)
1277 {
1278 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1279
1280 if (dst)
1281 return mesh_path_del(dst, sdata);
1282
1283 mesh_path_flush_by_iface(sdata);
1284 return 0;
1285 }
1286
1287 static int ieee80211_change_mpath(struct wiphy *wiphy,
1288 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
1295 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1296
1297 rcu_read_lock();
1298
1299 sta = sta_info_get(sdata, next_hop);
1300 if (!sta) {
1301 rcu_read_unlock();
1302 return -ENOENT;
1303 }
1304
1305 mpath = mesh_path_lookup(dst, sdata);
1306 if (!mpath) {
1307 rcu_read_unlock();
1308 return -ENOENT;
1309 }
1310
1311 mesh_path_fix_nexthop(mpath, sta);
1312
1313 rcu_read_unlock();
1314 return 0;
1315 }
1316
1317 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1318 struct mpath_info *pinfo)
1319 {
1320 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1321
1322 if (next_hop_sta)
1323 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1324 else
1325 memset(next_hop, 0, ETH_ALEN);
1326
1327 pinfo->generation = mesh_paths_generation;
1328
1329 pinfo->filled = MPATH_INFO_FRAME_QLEN |
1330 MPATH_INFO_SN |
1331 MPATH_INFO_METRIC |
1332 MPATH_INFO_EXPTIME |
1333 MPATH_INFO_DISCOVERY_TIMEOUT |
1334 MPATH_INFO_DISCOVERY_RETRIES |
1335 MPATH_INFO_FLAGS;
1336
1337 pinfo->frame_qlen = mpath->frame_queue.qlen;
1338 pinfo->sn = mpath->sn;
1339 pinfo->metric = mpath->metric;
1340 if (time_before(jiffies, mpath->exp_time))
1341 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1342 pinfo->discovery_timeout =
1343 jiffies_to_msecs(mpath->discovery_timeout);
1344 pinfo->discovery_retries = mpath->discovery_retries;
1345 pinfo->flags = 0;
1346 if (mpath->flags & MESH_PATH_ACTIVE)
1347 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1348 if (mpath->flags & MESH_PATH_RESOLVING)
1349 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1350 if (mpath->flags & MESH_PATH_SN_VALID)
1351 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1352 if (mpath->flags & MESH_PATH_FIXED)
1353 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1354 if (mpath->flags & MESH_PATH_RESOLVING)
1355 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1356
1357 pinfo->flags = mpath->flags;
1358 }
1359
1360 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1361 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1362
1363 {
1364 struct ieee80211_sub_if_data *sdata;
1365 struct mesh_path *mpath;
1366
1367 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1368
1369 rcu_read_lock();
1370 mpath = mesh_path_lookup(dst, sdata);
1371 if (!mpath) {
1372 rcu_read_unlock();
1373 return -ENOENT;
1374 }
1375 memcpy(dst, mpath->dst, ETH_ALEN);
1376 mpath_set_pinfo(mpath, next_hop, pinfo);
1377 rcu_read_unlock();
1378 return 0;
1379 }
1380
1381 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1382 int idx, u8 *dst, u8 *next_hop,
1383 struct mpath_info *pinfo)
1384 {
1385 struct ieee80211_sub_if_data *sdata;
1386 struct mesh_path *mpath;
1387
1388 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1389
1390 rcu_read_lock();
1391 mpath = mesh_path_lookup_by_idx(idx, sdata);
1392 if (!mpath) {
1393 rcu_read_unlock();
1394 return -ENOENT;
1395 }
1396 memcpy(dst, mpath->dst, ETH_ALEN);
1397 mpath_set_pinfo(mpath, next_hop, pinfo);
1398 rcu_read_unlock();
1399 return 0;
1400 }
1401
1402 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1403 struct net_device *dev,
1404 struct mesh_config *conf)
1405 {
1406 struct ieee80211_sub_if_data *sdata;
1407 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1408
1409 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1410 return 0;
1411 }
1412
1413 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1414 {
1415 return (mask >> (parm-1)) & 0x1;
1416 }
1417
1418 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1419 const struct mesh_setup *setup)
1420 {
1421 u8 *new_ie;
1422 const u8 *old_ie;
1423 struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1424 struct ieee80211_sub_if_data, u.mesh);
1425
1426 /* allocate information elements */
1427 new_ie = NULL;
1428 old_ie = ifmsh->ie;
1429
1430 if (setup->ie_len) {
1431 new_ie = kmemdup(setup->ie, setup->ie_len,
1432 GFP_KERNEL);
1433 if (!new_ie)
1434 return -ENOMEM;
1435 }
1436 ifmsh->ie_len = setup->ie_len;
1437 ifmsh->ie = new_ie;
1438 kfree(old_ie);
1439
1440 /* now copy the rest of the setup parameters */
1441 ifmsh->mesh_id_len = setup->mesh_id_len;
1442 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1443 ifmsh->mesh_sp_id = setup->sync_method;
1444 ifmsh->mesh_pp_id = setup->path_sel_proto;
1445 ifmsh->mesh_pm_id = setup->path_metric;
1446 ifmsh->security = IEEE80211_MESH_SEC_NONE;
1447 if (setup->is_authenticated)
1448 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1449 if (setup->is_secure)
1450 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1451
1452 /* mcast rate setting in Mesh Node */
1453 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1454 sizeof(setup->mcast_rate));
1455
1456 return 0;
1457 }
1458
1459 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1460 struct net_device *dev, u32 mask,
1461 const struct mesh_config *nconf)
1462 {
1463 struct mesh_config *conf;
1464 struct ieee80211_sub_if_data *sdata;
1465 struct ieee80211_if_mesh *ifmsh;
1466
1467 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1468 ifmsh = &sdata->u.mesh;
1469
1470 /* Set the config options which we are interested in setting */
1471 conf = &(sdata->u.mesh.mshcfg);
1472 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1473 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1474 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1475 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1476 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1477 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1478 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1479 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1480 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1481 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1482 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1483 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1484 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1485 conf->dot11MeshTTL = nconf->element_ttl;
1486 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1487 conf->auto_open_plinks = nconf->auto_open_plinks;
1488 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1489 conf->dot11MeshNbrOffsetMaxNeighbor =
1490 nconf->dot11MeshNbrOffsetMaxNeighbor;
1491 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1492 conf->dot11MeshHWMPmaxPREQretries =
1493 nconf->dot11MeshHWMPmaxPREQretries;
1494 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1495 conf->path_refresh_time = nconf->path_refresh_time;
1496 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1497 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1498 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1499 conf->dot11MeshHWMPactivePathTimeout =
1500 nconf->dot11MeshHWMPactivePathTimeout;
1501 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1502 conf->dot11MeshHWMPpreqMinInterval =
1503 nconf->dot11MeshHWMPpreqMinInterval;
1504 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1505 conf->dot11MeshHWMPperrMinInterval =
1506 nconf->dot11MeshHWMPperrMinInterval;
1507 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1508 mask))
1509 conf->dot11MeshHWMPnetDiameterTraversalTime =
1510 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1511 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1512 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1513 ieee80211_mesh_root_setup(ifmsh);
1514 }
1515 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1516 /* our current gate announcement implementation rides on root
1517 * announcements, so require this ifmsh to also be a root node
1518 * */
1519 if (nconf->dot11MeshGateAnnouncementProtocol &&
1520 !conf->dot11MeshHWMPRootMode) {
1521 conf->dot11MeshHWMPRootMode = 1;
1522 ieee80211_mesh_root_setup(ifmsh);
1523 }
1524 conf->dot11MeshGateAnnouncementProtocol =
1525 nconf->dot11MeshGateAnnouncementProtocol;
1526 }
1527 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1528 conf->dot11MeshHWMPRannInterval =
1529 nconf->dot11MeshHWMPRannInterval;
1530 }
1531 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1532 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1533 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1534 /* our RSSI threshold implementation is supported only for
1535 * devices that report signal in dBm.
1536 */
1537 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1538 return -ENOTSUPP;
1539 conf->rssi_threshold = nconf->rssi_threshold;
1540 }
1541 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1542 conf->ht_opmode = nconf->ht_opmode;
1543 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1544 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1545 }
1546 return 0;
1547 }
1548
1549 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1550 const struct mesh_config *conf,
1551 const struct mesh_setup *setup)
1552 {
1553 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1554 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1555 int err;
1556
1557 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1558 err = copy_mesh_setup(ifmsh, setup);
1559 if (err)
1560 return err;
1561 ieee80211_start_mesh(sdata);
1562
1563 return 0;
1564 }
1565
1566 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1567 {
1568 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1569
1570 ieee80211_stop_mesh(sdata);
1571
1572 return 0;
1573 }
1574 #endif
1575
1576 static int ieee80211_change_bss(struct wiphy *wiphy,
1577 struct net_device *dev,
1578 struct bss_parameters *params)
1579 {
1580 struct ieee80211_sub_if_data *sdata;
1581 u32 changed = 0;
1582
1583 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1584
1585 if (params->use_cts_prot >= 0) {
1586 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1587 changed |= BSS_CHANGED_ERP_CTS_PROT;
1588 }
1589 if (params->use_short_preamble >= 0) {
1590 sdata->vif.bss_conf.use_short_preamble =
1591 params->use_short_preamble;
1592 changed |= BSS_CHANGED_ERP_PREAMBLE;
1593 }
1594
1595 if (!sdata->vif.bss_conf.use_short_slot &&
1596 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1597 sdata->vif.bss_conf.use_short_slot = true;
1598 changed |= BSS_CHANGED_ERP_SLOT;
1599 }
1600
1601 if (params->use_short_slot_time >= 0) {
1602 sdata->vif.bss_conf.use_short_slot =
1603 params->use_short_slot_time;
1604 changed |= BSS_CHANGED_ERP_SLOT;
1605 }
1606
1607 if (params->basic_rates) {
1608 int i, j;
1609 u32 rates = 0;
1610 struct ieee80211_local *local = wiphy_priv(wiphy);
1611 struct ieee80211_supported_band *sband =
1612 wiphy->bands[local->oper_channel->band];
1613
1614 for (i = 0; i < params->basic_rates_len; i++) {
1615 int rate = (params->basic_rates[i] & 0x7f) * 5;
1616 for (j = 0; j < sband->n_bitrates; j++) {
1617 if (sband->bitrates[j].bitrate == rate)
1618 rates |= BIT(j);
1619 }
1620 }
1621 sdata->vif.bss_conf.basic_rates = rates;
1622 changed |= BSS_CHANGED_BASIC_RATES;
1623 }
1624
1625 if (params->ap_isolate >= 0) {
1626 if (params->ap_isolate)
1627 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1628 else
1629 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1630 }
1631
1632 if (params->ht_opmode >= 0) {
1633 sdata->vif.bss_conf.ht_operation_mode =
1634 (u16) params->ht_opmode;
1635 changed |= BSS_CHANGED_HT;
1636 }
1637
1638 ieee80211_bss_info_change_notify(sdata, changed);
1639
1640 return 0;
1641 }
1642
1643 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1644 struct net_device *dev,
1645 struct ieee80211_txq_params *params)
1646 {
1647 struct ieee80211_local *local = wiphy_priv(wiphy);
1648 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1649 struct ieee80211_tx_queue_params p;
1650
1651 if (!local->ops->conf_tx)
1652 return -EOPNOTSUPP;
1653
1654 if (local->hw.queues < IEEE80211_NUM_ACS)
1655 return -EOPNOTSUPP;
1656
1657 memset(&p, 0, sizeof(p));
1658 p.aifs = params->aifs;
1659 p.cw_max = params->cwmax;
1660 p.cw_min = params->cwmin;
1661 p.txop = params->txop;
1662
1663 /*
1664 * Setting tx queue params disables u-apsd because it's only
1665 * called in master mode.
1666 */
1667 p.uapsd = false;
1668
1669 sdata->tx_conf[params->ac] = p;
1670 if (drv_conf_tx(local, sdata, params->ac, &p)) {
1671 wiphy_debug(local->hw.wiphy,
1672 "failed to set TX queue parameters for AC %d\n",
1673 params->ac);
1674 return -EINVAL;
1675 }
1676
1677 return 0;
1678 }
1679
1680 static int ieee80211_set_channel(struct wiphy *wiphy,
1681 struct net_device *netdev,
1682 struct ieee80211_channel *chan,
1683 enum nl80211_channel_type channel_type)
1684 {
1685 struct ieee80211_local *local = wiphy_priv(wiphy);
1686 struct ieee80211_sub_if_data *sdata = NULL;
1687 struct ieee80211_channel *old_oper;
1688 enum nl80211_channel_type old_oper_type;
1689 enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1690
1691 if (netdev)
1692 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1693
1694 switch (ieee80211_get_channel_mode(local, NULL)) {
1695 case CHAN_MODE_HOPPING:
1696 return -EBUSY;
1697 case CHAN_MODE_FIXED:
1698 if (local->oper_channel != chan)
1699 return -EBUSY;
1700 if (!sdata && local->_oper_channel_type == channel_type)
1701 return 0;
1702 break;
1703 case CHAN_MODE_UNDEFINED:
1704 break;
1705 }
1706
1707 if (sdata)
1708 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1709 old_oper_type = local->_oper_channel_type;
1710
1711 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1712 return -EBUSY;
1713
1714 old_oper = local->oper_channel;
1715 local->oper_channel = chan;
1716
1717 /* Update driver if changes were actually made. */
1718 if ((old_oper != local->oper_channel) ||
1719 (old_oper_type != local->_oper_channel_type))
1720 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1721
1722 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1723 old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1724 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1725
1726 return 0;
1727 }
1728
1729 #ifdef CONFIG_PM
1730 static int ieee80211_suspend(struct wiphy *wiphy,
1731 struct cfg80211_wowlan *wowlan)
1732 {
1733 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1734 }
1735
1736 static int ieee80211_resume(struct wiphy *wiphy)
1737 {
1738 return __ieee80211_resume(wiphy_priv(wiphy));
1739 }
1740 #else
1741 #define ieee80211_suspend NULL
1742 #define ieee80211_resume NULL
1743 #endif
1744
1745 static int ieee80211_scan(struct wiphy *wiphy,
1746 struct net_device *dev,
1747 struct cfg80211_scan_request *req)
1748 {
1749 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1750
1751 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1752 case NL80211_IFTYPE_STATION:
1753 case NL80211_IFTYPE_ADHOC:
1754 case NL80211_IFTYPE_MESH_POINT:
1755 case NL80211_IFTYPE_P2P_CLIENT:
1756 break;
1757 case NL80211_IFTYPE_P2P_GO:
1758 if (sdata->local->ops->hw_scan)
1759 break;
1760 /*
1761 * FIXME: implement NoA while scanning in software,
1762 * for now fall through to allow scanning only when
1763 * beaconing hasn't been configured yet
1764 */
1765 case NL80211_IFTYPE_AP:
1766 if (sdata->u.ap.beacon)
1767 return -EOPNOTSUPP;
1768 break;
1769 default:
1770 return -EOPNOTSUPP;
1771 }
1772
1773 return ieee80211_request_scan(sdata, req);
1774 }
1775
1776 static int
1777 ieee80211_sched_scan_start(struct wiphy *wiphy,
1778 struct net_device *dev,
1779 struct cfg80211_sched_scan_request *req)
1780 {
1781 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1782
1783 if (!sdata->local->ops->sched_scan_start)
1784 return -EOPNOTSUPP;
1785
1786 return ieee80211_request_sched_scan_start(sdata, req);
1787 }
1788
1789 static int
1790 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1791 {
1792 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1793
1794 if (!sdata->local->ops->sched_scan_stop)
1795 return -EOPNOTSUPP;
1796
1797 return ieee80211_request_sched_scan_stop(sdata);
1798 }
1799
1800 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1801 struct cfg80211_auth_request *req)
1802 {
1803 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1804 }
1805
1806 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1807 struct cfg80211_assoc_request *req)
1808 {
1809 struct ieee80211_local *local = wiphy_priv(wiphy);
1810 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1811
1812 switch (ieee80211_get_channel_mode(local, sdata)) {
1813 case CHAN_MODE_HOPPING:
1814 return -EBUSY;
1815 case CHAN_MODE_FIXED:
1816 if (local->oper_channel == req->bss->channel)
1817 break;
1818 return -EBUSY;
1819 case CHAN_MODE_UNDEFINED:
1820 break;
1821 }
1822
1823 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1824 }
1825
1826 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1827 struct cfg80211_deauth_request *req)
1828 {
1829 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1830 }
1831
1832 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1833 struct cfg80211_disassoc_request *req)
1834 {
1835 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1836 }
1837
1838 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1839 struct cfg80211_ibss_params *params)
1840 {
1841 struct ieee80211_local *local = wiphy_priv(wiphy);
1842 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1843
1844 switch (ieee80211_get_channel_mode(local, sdata)) {
1845 case CHAN_MODE_HOPPING:
1846 return -EBUSY;
1847 case CHAN_MODE_FIXED:
1848 if (!params->channel_fixed)
1849 return -EBUSY;
1850 if (local->oper_channel == params->channel)
1851 break;
1852 return -EBUSY;
1853 case CHAN_MODE_UNDEFINED:
1854 break;
1855 }
1856
1857 return ieee80211_ibss_join(sdata, params);
1858 }
1859
1860 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1861 {
1862 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1863
1864 return ieee80211_ibss_leave(sdata);
1865 }
1866
1867 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1868 {
1869 struct ieee80211_local *local = wiphy_priv(wiphy);
1870 int err;
1871
1872 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1873 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1874
1875 if (err)
1876 return err;
1877 }
1878
1879 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1880 err = drv_set_coverage_class(local, wiphy->coverage_class);
1881
1882 if (err)
1883 return err;
1884 }
1885
1886 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1887 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1888
1889 if (err)
1890 return err;
1891 }
1892
1893 if (changed & WIPHY_PARAM_RETRY_SHORT)
1894 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1895 if (changed & WIPHY_PARAM_RETRY_LONG)
1896 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1897 if (changed &
1898 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1899 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1900
1901 return 0;
1902 }
1903
1904 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1905 enum nl80211_tx_power_setting type, int mbm)
1906 {
1907 struct ieee80211_local *local = wiphy_priv(wiphy);
1908 struct ieee80211_channel *chan = local->hw.conf.channel;
1909 u32 changes = 0;
1910
1911 switch (type) {
1912 case NL80211_TX_POWER_AUTOMATIC:
1913 local->user_power_level = -1;
1914 break;
1915 case NL80211_TX_POWER_LIMITED:
1916 if (mbm < 0 || (mbm % 100))
1917 return -EOPNOTSUPP;
1918 local->user_power_level = MBM_TO_DBM(mbm);
1919 break;
1920 case NL80211_TX_POWER_FIXED:
1921 if (mbm < 0 || (mbm % 100))
1922 return -EOPNOTSUPP;
1923 /* TODO: move to cfg80211 when it knows the channel */
1924 if (MBM_TO_DBM(mbm) > chan->max_power)
1925 return -EINVAL;
1926 local->user_power_level = MBM_TO_DBM(mbm);
1927 break;
1928 }
1929
1930 ieee80211_hw_config(local, changes);
1931
1932 return 0;
1933 }
1934
1935 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1936 {
1937 struct ieee80211_local *local = wiphy_priv(wiphy);
1938
1939 *dbm = local->hw.conf.power_level;
1940
1941 return 0;
1942 }
1943
1944 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1945 const u8 *addr)
1946 {
1947 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1948
1949 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1950
1951 return 0;
1952 }
1953
1954 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1955 {
1956 struct ieee80211_local *local = wiphy_priv(wiphy);
1957
1958 drv_rfkill_poll(local);
1959 }
1960
1961 #ifdef CONFIG_NL80211_TESTMODE
1962 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1963 {
1964 struct ieee80211_local *local = wiphy_priv(wiphy);
1965
1966 if (!local->ops->testmode_cmd)
1967 return -EOPNOTSUPP;
1968
1969 return local->ops->testmode_cmd(&local->hw, data, len);
1970 }
1971
1972 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1973 struct sk_buff *skb,
1974 struct netlink_callback *cb,
1975 void *data, int len)
1976 {
1977 struct ieee80211_local *local = wiphy_priv(wiphy);
1978
1979 if (!local->ops->testmode_dump)
1980 return -EOPNOTSUPP;
1981
1982 return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1983 }
1984 #endif
1985
1986 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1987 enum ieee80211_smps_mode smps_mode)
1988 {
1989 const u8 *ap;
1990 enum ieee80211_smps_mode old_req;
1991 int err;
1992
1993 lockdep_assert_held(&sdata->u.mgd.mtx);
1994
1995 old_req = sdata->u.mgd.req_smps;
1996 sdata->u.mgd.req_smps = smps_mode;
1997
1998 if (old_req == smps_mode &&
1999 smps_mode != IEEE80211_SMPS_AUTOMATIC)
2000 return 0;
2001
2002 /*
2003 * If not associated, or current association is not an HT
2004 * association, there's no need to send an action frame.
2005 */
2006 if (!sdata->u.mgd.associated ||
2007 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2008 mutex_lock(&sdata->local->iflist_mtx);
2009 ieee80211_recalc_smps(sdata->local);
2010 mutex_unlock(&sdata->local->iflist_mtx);
2011 return 0;
2012 }
2013
2014 ap = sdata->u.mgd.associated->bssid;
2015
2016 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2017 if (sdata->u.mgd.powersave)
2018 smps_mode = IEEE80211_SMPS_DYNAMIC;
2019 else
2020 smps_mode = IEEE80211_SMPS_OFF;
2021 }
2022
2023 /* send SM PS frame to AP */
2024 err = ieee80211_send_smps_action(sdata, smps_mode,
2025 ap, ap);
2026 if (err)
2027 sdata->u.mgd.req_smps = old_req;
2028
2029 return err;
2030 }
2031
2032 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2033 bool enabled, int timeout)
2034 {
2035 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2036 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2037
2038 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2039 return -EOPNOTSUPP;
2040
2041 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2042 return -EOPNOTSUPP;
2043
2044 if (enabled == sdata->u.mgd.powersave &&
2045 timeout == local->dynamic_ps_forced_timeout)
2046 return 0;
2047
2048 sdata->u.mgd.powersave = enabled;
2049 local->dynamic_ps_forced_timeout = timeout;
2050
2051 /* no change, but if automatic follow powersave */
2052 mutex_lock(&sdata->u.mgd.mtx);
2053 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2054 mutex_unlock(&sdata->u.mgd.mtx);
2055
2056 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2057 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2058
2059 ieee80211_recalc_ps(local, -1);
2060
2061 return 0;
2062 }
2063
2064 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2065 struct net_device *dev,
2066 s32 rssi_thold, u32 rssi_hyst)
2067 {
2068 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2069 struct ieee80211_vif *vif = &sdata->vif;
2070 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2071
2072 if (rssi_thold == bss_conf->cqm_rssi_thold &&
2073 rssi_hyst == bss_conf->cqm_rssi_hyst)
2074 return 0;
2075
2076 bss_conf->cqm_rssi_thold = rssi_thold;
2077 bss_conf->cqm_rssi_hyst = rssi_hyst;
2078
2079 /* tell the driver upon association, unless already associated */
2080 if (sdata->u.mgd.associated &&
2081 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2082 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2083
2084 return 0;
2085 }
2086
2087 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2088 struct net_device *dev,
2089 const u8 *addr,
2090 const struct cfg80211_bitrate_mask *mask)
2091 {
2092 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2093 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2094 int i, ret;
2095
2096 if (!ieee80211_sdata_running(sdata))
2097 return -ENETDOWN;
2098
2099 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2100 ret = drv_set_bitrate_mask(local, sdata, mask);
2101 if (ret)
2102 return ret;
2103 }
2104
2105 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2106 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2107 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2108 sizeof(mask->control[i].mcs));
2109 }
2110
2111 return 0;
2112 }
2113
2114 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
2115 struct net_device *dev,
2116 struct ieee80211_channel *chan,
2117 enum nl80211_channel_type chantype,
2118 unsigned int duration, u64 *cookie)
2119 {
2120 int ret;
2121 u32 random_cookie;
2122
2123 lockdep_assert_held(&local->mtx);
2124
2125 if (local->hw_roc_cookie)
2126 return -EBUSY;
2127 /* must be nonzero */
2128 random_cookie = random32() | 1;
2129
2130 *cookie = random_cookie;
2131 local->hw_roc_dev = dev;
2132 local->hw_roc_cookie = random_cookie;
2133 local->hw_roc_channel = chan;
2134 local->hw_roc_channel_type = chantype;
2135 local->hw_roc_duration = duration;
2136 ret = drv_remain_on_channel(local, chan, chantype, duration);
2137 if (ret) {
2138 local->hw_roc_channel = NULL;
2139 local->hw_roc_cookie = 0;
2140 }
2141
2142 return ret;
2143 }
2144
2145 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2146 struct net_device *dev,
2147 struct ieee80211_channel *chan,
2148 enum nl80211_channel_type channel_type,
2149 unsigned int duration,
2150 u64 *cookie)
2151 {
2152 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2153 struct ieee80211_local *local = sdata->local;
2154
2155 if (local->ops->remain_on_channel) {
2156 int ret;
2157
2158 mutex_lock(&local->mtx);
2159 ret = ieee80211_remain_on_channel_hw(local, dev,
2160 chan, channel_type,
2161 duration, cookie);
2162 local->hw_roc_for_tx = false;
2163 mutex_unlock(&local->mtx);
2164
2165 return ret;
2166 }
2167
2168 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
2169 duration, cookie);
2170 }
2171
2172 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
2173 u64 cookie)
2174 {
2175 int ret;
2176
2177 lockdep_assert_held(&local->mtx);
2178
2179 if (local->hw_roc_cookie != cookie)
2180 return -ENOENT;
2181
2182 ret = drv_cancel_remain_on_channel(local);
2183 if (ret)
2184 return ret;
2185
2186 local->hw_roc_cookie = 0;
2187 local->hw_roc_channel = NULL;
2188
2189 ieee80211_recalc_idle(local);
2190
2191 return 0;
2192 }
2193
2194 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2195 struct net_device *dev,
2196 u64 cookie)
2197 {
2198 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2199 struct ieee80211_local *local = sdata->local;
2200
2201 if (local->ops->cancel_remain_on_channel) {
2202 int ret;
2203
2204 mutex_lock(&local->mtx);
2205 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2206 mutex_unlock(&local->mtx);
2207
2208 return ret;
2209 }
2210
2211 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2212 }
2213
2214 static enum work_done_result
2215 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2216 {
2217 /*
2218 * Use the data embedded in the work struct for reporting
2219 * here so if the driver mangled the SKB before dropping
2220 * it (which is the only way we really should get here)
2221 * then we don't report mangled data.
2222 *
2223 * If there was no wait time, then by the time we get here
2224 * the driver will likely not have reported the status yet,
2225 * so in that case userspace will have to deal with it.
2226 */
2227
2228 if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2229 cfg80211_mgmt_tx_status(wk->sdata->dev,
2230 (unsigned long) wk->offchan_tx.frame,
2231 wk->data, wk->data_len, false, GFP_KERNEL);
2232
2233 return WORK_DONE_DESTROY;
2234 }
2235
2236 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2237 struct ieee80211_channel *chan, bool offchan,
2238 enum nl80211_channel_type channel_type,
2239 bool channel_type_valid, unsigned int wait,
2240 const u8 *buf, size_t len, bool no_cck,
2241 bool dont_wait_for_ack, u64 *cookie)
2242 {
2243 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2244 struct ieee80211_local *local = sdata->local;
2245 struct sk_buff *skb;
2246 struct sta_info *sta;
2247 struct ieee80211_work *wk;
2248 const struct ieee80211_mgmt *mgmt = (void *)buf;
2249 u32 flags;
2250 bool is_offchan = false;
2251
2252 if (dont_wait_for_ack)
2253 flags = IEEE80211_TX_CTL_NO_ACK;
2254 else
2255 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2256 IEEE80211_TX_CTL_REQ_TX_STATUS;
2257
2258 /* Check that we are on the requested channel for transmission */
2259 if (chan != local->tmp_channel &&
2260 chan != local->oper_channel)
2261 is_offchan = true;
2262 if (channel_type_valid &&
2263 (channel_type != local->tmp_channel_type &&
2264 channel_type != local->_oper_channel_type))
2265 is_offchan = true;
2266
2267 if (chan == local->hw_roc_channel) {
2268 /* TODO: check channel type? */
2269 is_offchan = false;
2270 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2271 }
2272
2273 if (no_cck)
2274 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2275
2276 if (is_offchan && !offchan)
2277 return -EBUSY;
2278
2279 switch (sdata->vif.type) {
2280 case NL80211_IFTYPE_ADHOC:
2281 case NL80211_IFTYPE_AP:
2282 case NL80211_IFTYPE_AP_VLAN:
2283 case NL80211_IFTYPE_P2P_GO:
2284 case NL80211_IFTYPE_MESH_POINT:
2285 if (!ieee80211_is_action(mgmt->frame_control) ||
2286 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2287 break;
2288 rcu_read_lock();
2289 sta = sta_info_get(sdata, mgmt->da);
2290 rcu_read_unlock();
2291 if (!sta)
2292 return -ENOLINK;
2293 break;
2294 case NL80211_IFTYPE_STATION:
2295 case NL80211_IFTYPE_P2P_CLIENT:
2296 break;
2297 default:
2298 return -EOPNOTSUPP;
2299 }
2300
2301 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2302 if (!skb)
2303 return -ENOMEM;
2304 skb_reserve(skb, local->hw.extra_tx_headroom);
2305
2306 memcpy(skb_put(skb, len), buf, len);
2307
2308 IEEE80211_SKB_CB(skb)->flags = flags;
2309
2310 if (flags & IEEE80211_TX_CTL_TX_OFFCHAN)
2311 IEEE80211_SKB_CB(skb)->hw_queue =
2312 local->hw.offchannel_tx_hw_queue;
2313
2314 skb->dev = sdata->dev;
2315
2316 *cookie = (unsigned long) skb;
2317
2318 if (is_offchan && local->ops->remain_on_channel) {
2319 unsigned int duration;
2320 int ret;
2321
2322 mutex_lock(&local->mtx);
2323 /*
2324 * If the duration is zero, then the driver
2325 * wouldn't actually do anything. Set it to
2326 * 100 for now.
2327 *
2328 * TODO: cancel the off-channel operation
2329 * when we get the SKB's TX status and
2330 * the wait time was zero before.
2331 */
2332 duration = 100;
2333 if (wait)
2334 duration = wait;
2335 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2336 channel_type,
2337 duration, cookie);
2338 if (ret) {
2339 kfree_skb(skb);
2340 mutex_unlock(&local->mtx);
2341 return ret;
2342 }
2343
2344 local->hw_roc_for_tx = true;
2345 local->hw_roc_duration = wait;
2346
2347 /*
2348 * queue up frame for transmission after
2349 * ieee80211_ready_on_channel call
2350 */
2351
2352 /* modify cookie to prevent API mismatches */
2353 *cookie ^= 2;
2354 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2355 IEEE80211_SKB_CB(skb)->hw_queue =
2356 local->hw.offchannel_tx_hw_queue;
2357 local->hw_roc_skb = skb;
2358 local->hw_roc_skb_for_status = skb;
2359 mutex_unlock(&local->mtx);
2360
2361 return 0;
2362 }
2363
2364 /*
2365 * Can transmit right away if the channel was the
2366 * right one and there's no wait involved... If a
2367 * wait is involved, we might otherwise not be on
2368 * the right channel for long enough!
2369 */
2370 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2371 ieee80211_tx_skb(sdata, skb);
2372 return 0;
2373 }
2374
2375 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2376 if (!wk) {
2377 kfree_skb(skb);
2378 return -ENOMEM;
2379 }
2380
2381 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2382 wk->chan = chan;
2383 wk->chan_type = channel_type;
2384 wk->sdata = sdata;
2385 wk->done = ieee80211_offchan_tx_done;
2386 wk->offchan_tx.frame = skb;
2387 wk->offchan_tx.wait = wait;
2388 wk->data_len = len;
2389 memcpy(wk->data, buf, len);
2390
2391 ieee80211_add_work(wk);
2392 return 0;
2393 }
2394
2395 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2396 struct net_device *dev,
2397 u64 cookie)
2398 {
2399 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2400 struct ieee80211_local *local = sdata->local;
2401 struct ieee80211_work *wk;
2402 int ret = -ENOENT;
2403
2404 mutex_lock(&local->mtx);
2405
2406 if (local->ops->cancel_remain_on_channel) {
2407 cookie ^= 2;
2408 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2409
2410 if (ret == 0) {
2411 kfree_skb(local->hw_roc_skb);
2412 local->hw_roc_skb = NULL;
2413 local->hw_roc_skb_for_status = NULL;
2414 }
2415
2416 mutex_unlock(&local->mtx);
2417
2418 return ret;
2419 }
2420
2421 list_for_each_entry(wk, &local->work_list, list) {
2422 if (wk->sdata != sdata)
2423 continue;
2424
2425 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2426 continue;
2427
2428 if (cookie != (unsigned long) wk->offchan_tx.frame)
2429 continue;
2430
2431 wk->timeout = jiffies;
2432
2433 ieee80211_queue_work(&local->hw, &local->work_work);
2434 ret = 0;
2435 break;
2436 }
2437 mutex_unlock(&local->mtx);
2438
2439 return ret;
2440 }
2441
2442 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2443 struct net_device *dev,
2444 u16 frame_type, bool reg)
2445 {
2446 struct ieee80211_local *local = wiphy_priv(wiphy);
2447
2448 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2449 return;
2450
2451 if (reg)
2452 local->probe_req_reg++;
2453 else
2454 local->probe_req_reg--;
2455
2456 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2457 }
2458
2459 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2460 {
2461 struct ieee80211_local *local = wiphy_priv(wiphy);
2462
2463 if (local->started)
2464 return -EOPNOTSUPP;
2465
2466 return drv_set_antenna(local, tx_ant, rx_ant);
2467 }
2468
2469 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2470 {
2471 struct ieee80211_local *local = wiphy_priv(wiphy);
2472
2473 return drv_get_antenna(local, tx_ant, rx_ant);
2474 }
2475
2476 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2477 {
2478 struct ieee80211_local *local = wiphy_priv(wiphy);
2479
2480 return drv_set_ringparam(local, tx, rx);
2481 }
2482
2483 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2484 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2485 {
2486 struct ieee80211_local *local = wiphy_priv(wiphy);
2487
2488 drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2489 }
2490
2491 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2492 struct net_device *dev,
2493 struct cfg80211_gtk_rekey_data *data)
2494 {
2495 struct ieee80211_local *local = wiphy_priv(wiphy);
2496 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2497
2498 if (!local->ops->set_rekey_data)
2499 return -EOPNOTSUPP;
2500
2501 drv_set_rekey_data(local, sdata, data);
2502
2503 return 0;
2504 }
2505
2506 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2507 {
2508 u8 *pos = (void *)skb_put(skb, 7);
2509
2510 *pos++ = WLAN_EID_EXT_CAPABILITY;
2511 *pos++ = 5; /* len */
2512 *pos++ = 0x0;
2513 *pos++ = 0x0;
2514 *pos++ = 0x0;
2515 *pos++ = 0x0;
2516 *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2517 }
2518
2519 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2520 {
2521 struct ieee80211_local *local = sdata->local;
2522 u16 capab;
2523
2524 capab = 0;
2525 if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2526 return capab;
2527
2528 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2529 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2530 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2531 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2532
2533 return capab;
2534 }
2535
2536 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2537 u8 *peer, u8 *bssid)
2538 {
2539 struct ieee80211_tdls_lnkie *lnkid;
2540
2541 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2542
2543 lnkid->ie_type = WLAN_EID_LINK_ID;
2544 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2545
2546 memcpy(lnkid->bssid, bssid, ETH_ALEN);
2547 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2548 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2549 }
2550
2551 static int
2552 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2553 u8 *peer, u8 action_code, u8 dialog_token,
2554 u16 status_code, struct sk_buff *skb)
2555 {
2556 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2557 struct ieee80211_tdls_data *tf;
2558
2559 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2560
2561 memcpy(tf->da, peer, ETH_ALEN);
2562 memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2563 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2564 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2565
2566 switch (action_code) {
2567 case WLAN_TDLS_SETUP_REQUEST:
2568 tf->category = WLAN_CATEGORY_TDLS;
2569 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2570
2571 skb_put(skb, sizeof(tf->u.setup_req));
2572 tf->u.setup_req.dialog_token = dialog_token;
2573 tf->u.setup_req.capability =
2574 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2575
2576 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2577 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2578 ieee80211_tdls_add_ext_capab(skb);
2579 break;
2580 case WLAN_TDLS_SETUP_RESPONSE:
2581 tf->category = WLAN_CATEGORY_TDLS;
2582 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2583
2584 skb_put(skb, sizeof(tf->u.setup_resp));
2585 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2586 tf->u.setup_resp.dialog_token = dialog_token;
2587 tf->u.setup_resp.capability =
2588 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2589
2590 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2591 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2592 ieee80211_tdls_add_ext_capab(skb);
2593 break;
2594 case WLAN_TDLS_SETUP_CONFIRM:
2595 tf->category = WLAN_CATEGORY_TDLS;
2596 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2597
2598 skb_put(skb, sizeof(tf->u.setup_cfm));
2599 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2600 tf->u.setup_cfm.dialog_token = dialog_token;
2601 break;
2602 case WLAN_TDLS_TEARDOWN:
2603 tf->category = WLAN_CATEGORY_TDLS;
2604 tf->action_code = WLAN_TDLS_TEARDOWN;
2605
2606 skb_put(skb, sizeof(tf->u.teardown));
2607 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2608 break;
2609 case WLAN_TDLS_DISCOVERY_REQUEST:
2610 tf->category = WLAN_CATEGORY_TDLS;
2611 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2612
2613 skb_put(skb, sizeof(tf->u.discover_req));
2614 tf->u.discover_req.dialog_token = dialog_token;
2615 break;
2616 default:
2617 return -EINVAL;
2618 }
2619
2620 return 0;
2621 }
2622
2623 static int
2624 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2625 u8 *peer, u8 action_code, u8 dialog_token,
2626 u16 status_code, struct sk_buff *skb)
2627 {
2628 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2629 struct ieee80211_mgmt *mgmt;
2630
2631 mgmt = (void *)skb_put(skb, 24);
2632 memset(mgmt, 0, 24);
2633 memcpy(mgmt->da, peer, ETH_ALEN);
2634 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2635 memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2636
2637 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2638 IEEE80211_STYPE_ACTION);
2639
2640 switch (action_code) {
2641 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2642 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2643 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2644 mgmt->u.action.u.tdls_discover_resp.action_code =
2645 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2646 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2647 dialog_token;
2648 mgmt->u.action.u.tdls_discover_resp.capability =
2649 cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2650
2651 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2652 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2653 ieee80211_tdls_add_ext_capab(skb);
2654 break;
2655 default:
2656 return -EINVAL;
2657 }
2658
2659 return 0;
2660 }
2661
2662 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2663 u8 *peer, u8 action_code, u8 dialog_token,
2664 u16 status_code, const u8 *extra_ies,
2665 size_t extra_ies_len)
2666 {
2667 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2668 struct ieee80211_local *local = sdata->local;
2669 struct ieee80211_tx_info *info;
2670 struct sk_buff *skb = NULL;
2671 bool send_direct;
2672 int ret;
2673
2674 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2675 return -ENOTSUPP;
2676
2677 /* make sure we are in managed mode, and associated */
2678 if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2679 !sdata->u.mgd.associated)
2680 return -EINVAL;
2681
2682 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2683 printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2684 #endif
2685
2686 skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2687 max(sizeof(struct ieee80211_mgmt),
2688 sizeof(struct ieee80211_tdls_data)) +
2689 50 + /* supported rates */
2690 7 + /* ext capab */
2691 extra_ies_len +
2692 sizeof(struct ieee80211_tdls_lnkie));
2693 if (!skb)
2694 return -ENOMEM;
2695
2696 info = IEEE80211_SKB_CB(skb);
2697 skb_reserve(skb, local->hw.extra_tx_headroom);
2698
2699 switch (action_code) {
2700 case WLAN_TDLS_SETUP_REQUEST:
2701 case WLAN_TDLS_SETUP_RESPONSE:
2702 case WLAN_TDLS_SETUP_CONFIRM:
2703 case WLAN_TDLS_TEARDOWN:
2704 case WLAN_TDLS_DISCOVERY_REQUEST:
2705 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2706 action_code, dialog_token,
2707 status_code, skb);
2708 send_direct = false;
2709 break;
2710 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2711 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2712 dialog_token, status_code,
2713 skb);
2714 send_direct = true;
2715 break;
2716 default:
2717 ret = -ENOTSUPP;
2718 break;
2719 }
2720
2721 if (ret < 0)
2722 goto fail;
2723
2724 if (extra_ies_len)
2725 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2726
2727 /* the TDLS link IE is always added last */
2728 switch (action_code) {
2729 case WLAN_TDLS_SETUP_REQUEST:
2730 case WLAN_TDLS_SETUP_CONFIRM:
2731 case WLAN_TDLS_TEARDOWN:
2732 case WLAN_TDLS_DISCOVERY_REQUEST:
2733 /* we are the initiator */
2734 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2735 sdata->u.mgd.bssid);
2736 break;
2737 case WLAN_TDLS_SETUP_RESPONSE:
2738 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2739 /* we are the responder */
2740 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2741 sdata->u.mgd.bssid);
2742 break;
2743 default:
2744 ret = -ENOTSUPP;
2745 goto fail;
2746 }
2747
2748 if (send_direct) {
2749 ieee80211_tx_skb(sdata, skb);
2750 return 0;
2751 }
2752
2753 /*
2754 * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2755 * we should default to AC_VI.
2756 */
2757 switch (action_code) {
2758 case WLAN_TDLS_SETUP_REQUEST:
2759 case WLAN_TDLS_SETUP_RESPONSE:
2760 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2761 skb->priority = 2;
2762 break;
2763 default:
2764 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2765 skb->priority = 5;
2766 break;
2767 }
2768
2769 /* disable bottom halves when entering the Tx path */
2770 local_bh_disable();
2771 ret = ieee80211_subif_start_xmit(skb, dev);
2772 local_bh_enable();
2773
2774 return ret;
2775
2776 fail:
2777 dev_kfree_skb(skb);
2778 return ret;
2779 }
2780
2781 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2782 u8 *peer, enum nl80211_tdls_operation oper)
2783 {
2784 struct sta_info *sta;
2785 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2786
2787 if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2788 return -ENOTSUPP;
2789
2790 if (sdata->vif.type != NL80211_IFTYPE_STATION)
2791 return -EINVAL;
2792
2793 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2794 printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2795 #endif
2796
2797 switch (oper) {
2798 case NL80211_TDLS_ENABLE_LINK:
2799 rcu_read_lock();
2800 sta = sta_info_get(sdata, peer);
2801 if (!sta) {
2802 rcu_read_unlock();
2803 return -ENOLINK;
2804 }
2805
2806 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2807 rcu_read_unlock();
2808 break;
2809 case NL80211_TDLS_DISABLE_LINK:
2810 return sta_info_destroy_addr(sdata, peer);
2811 case NL80211_TDLS_TEARDOWN:
2812 case NL80211_TDLS_SETUP:
2813 case NL80211_TDLS_DISCOVERY_REQ:
2814 /* We don't support in-driver setup/teardown/discovery */
2815 return -ENOTSUPP;
2816 default:
2817 return -ENOTSUPP;
2818 }
2819
2820 return 0;
2821 }
2822
2823 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2824 const u8 *peer, u64 *cookie)
2825 {
2826 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2827 struct ieee80211_local *local = sdata->local;
2828 struct ieee80211_qos_hdr *nullfunc;
2829 struct sk_buff *skb;
2830 int size = sizeof(*nullfunc);
2831 __le16 fc;
2832 bool qos;
2833 struct ieee80211_tx_info *info;
2834 struct sta_info *sta;
2835
2836 rcu_read_lock();
2837 sta = sta_info_get(sdata, peer);
2838 if (sta) {
2839 qos = test_sta_flag(sta, WLAN_STA_WME);
2840 rcu_read_unlock();
2841 } else {
2842 rcu_read_unlock();
2843 return -ENOLINK;
2844 }
2845
2846 if (qos) {
2847 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2848 IEEE80211_STYPE_QOS_NULLFUNC |
2849 IEEE80211_FCTL_FROMDS);
2850 } else {
2851 size -= 2;
2852 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2853 IEEE80211_STYPE_NULLFUNC |
2854 IEEE80211_FCTL_FROMDS);
2855 }
2856
2857 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2858 if (!skb)
2859 return -ENOMEM;
2860
2861 skb->dev = dev;
2862
2863 skb_reserve(skb, local->hw.extra_tx_headroom);
2864
2865 nullfunc = (void *) skb_put(skb, size);
2866 nullfunc->frame_control = fc;
2867 nullfunc->duration_id = 0;
2868 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2869 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2870 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2871 nullfunc->seq_ctrl = 0;
2872
2873 info = IEEE80211_SKB_CB(skb);
2874
2875 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2876 IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2877
2878 skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2879 skb->priority = 7;
2880 if (qos)
2881 nullfunc->qos_ctrl = cpu_to_le16(7);
2882
2883 local_bh_disable();
2884 ieee80211_xmit(sdata, skb);
2885 local_bh_enable();
2886
2887 *cookie = (unsigned long) skb;
2888 return 0;
2889 }
2890
2891 static struct ieee80211_channel *
2892 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2893 enum nl80211_channel_type *type)
2894 {
2895 struct ieee80211_local *local = wiphy_priv(wiphy);
2896
2897 *type = local->_oper_channel_type;
2898 return local->oper_channel;
2899 }
2900
2901 #ifdef CONFIG_PM
2902 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2903 {
2904 drv_set_wakeup(wiphy_priv(wiphy), enabled);
2905 }
2906 #endif
2907
2908 struct cfg80211_ops mac80211_config_ops = {
2909 .add_virtual_intf = ieee80211_add_iface,
2910 .del_virtual_intf = ieee80211_del_iface,
2911 .change_virtual_intf = ieee80211_change_iface,
2912 .add_key = ieee80211_add_key,
2913 .del_key = ieee80211_del_key,
2914 .get_key = ieee80211_get_key,
2915 .set_default_key = ieee80211_config_default_key,
2916 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2917 .start_ap = ieee80211_start_ap,
2918 .change_beacon = ieee80211_change_beacon,
2919 .stop_ap = ieee80211_stop_ap,
2920 .add_station = ieee80211_add_station,
2921 .del_station = ieee80211_del_station,
2922 .change_station = ieee80211_change_station,
2923 .get_station = ieee80211_get_station,
2924 .dump_station = ieee80211_dump_station,
2925 .dump_survey = ieee80211_dump_survey,
2926 #ifdef CONFIG_MAC80211_MESH
2927 .add_mpath = ieee80211_add_mpath,
2928 .del_mpath = ieee80211_del_mpath,
2929 .change_mpath = ieee80211_change_mpath,
2930 .get_mpath = ieee80211_get_mpath,
2931 .dump_mpath = ieee80211_dump_mpath,
2932 .update_mesh_config = ieee80211_update_mesh_config,
2933 .get_mesh_config = ieee80211_get_mesh_config,
2934 .join_mesh = ieee80211_join_mesh,
2935 .leave_mesh = ieee80211_leave_mesh,
2936 #endif
2937 .change_bss = ieee80211_change_bss,
2938 .set_txq_params = ieee80211_set_txq_params,
2939 .set_channel = ieee80211_set_channel,
2940 .suspend = ieee80211_suspend,
2941 .resume = ieee80211_resume,
2942 .scan = ieee80211_scan,
2943 .sched_scan_start = ieee80211_sched_scan_start,
2944 .sched_scan_stop = ieee80211_sched_scan_stop,
2945 .auth = ieee80211_auth,
2946 .assoc = ieee80211_assoc,
2947 .deauth = ieee80211_deauth,
2948 .disassoc = ieee80211_disassoc,
2949 .join_ibss = ieee80211_join_ibss,
2950 .leave_ibss = ieee80211_leave_ibss,
2951 .set_wiphy_params = ieee80211_set_wiphy_params,
2952 .set_tx_power = ieee80211_set_tx_power,
2953 .get_tx_power = ieee80211_get_tx_power,
2954 .set_wds_peer = ieee80211_set_wds_peer,
2955 .rfkill_poll = ieee80211_rfkill_poll,
2956 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2957 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2958 .set_power_mgmt = ieee80211_set_power_mgmt,
2959 .set_bitrate_mask = ieee80211_set_bitrate_mask,
2960 .remain_on_channel = ieee80211_remain_on_channel,
2961 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2962 .mgmt_tx = ieee80211_mgmt_tx,
2963 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2964 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2965 .mgmt_frame_register = ieee80211_mgmt_frame_register,
2966 .set_antenna = ieee80211_set_antenna,
2967 .get_antenna = ieee80211_get_antenna,
2968 .set_ringparam = ieee80211_set_ringparam,
2969 .get_ringparam = ieee80211_get_ringparam,
2970 .set_rekey_data = ieee80211_set_rekey_data,
2971 .tdls_oper = ieee80211_tdls_oper,
2972 .tdls_mgmt = ieee80211_tdls_mgmt,
2973 .probe_client = ieee80211_probe_client,
2974 .get_channel = ieee80211_wiphy_get_channel,
2975 .set_noack_map = ieee80211_set_noack_map,
2976 #ifdef CONFIG_PM
2977 .set_wakeup = ieee80211_set_wakeup,
2978 #endif
2979 .get_et_sset_count = ieee80211_get_et_sset_count,
2980 .get_et_stats = ieee80211_get_et_stats,
2981 .get_et_strings = ieee80211_get_et_strings,
2982 };