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cfg80211/mac80211: get mandatory rates based on scan width
[linux-block.git] / net / mac80211 / mlme.c
CommitLineData
f0706e82
JB		 1/*
2 * BSS client mode implementation
5394af4d 3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
f0706e82
JB		 4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
5b323edb 14#include <linux/delay.h>
f0706e82
JB		 15#include <linux/if_ether.h>
16#include <linux/skbuff.h>
f0706e82 17#include <linux/if_arp.h>
f0706e82 18#include <linux/etherdevice.h>
d9b93842 19#include <linux/moduleparam.h>
d0709a65 20#include <linux/rtnetlink.h>
e8db0be1 21#include <linux/pm_qos.h>
d91f36db 22#include <linux/crc32.h>
5a0e3ad6 23#include <linux/slab.h>
bc3b2d7f 24#include <linux/export.h>
f0706e82 25#include <net/mac80211.h>
472dbc45 26#include <asm/unaligned.h>
60f8b39c 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7
JB		 30#include "rate.h"
31#include "led.h"
f0706e82 32
1672c0e3
JB		 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
34#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
35#define IEEE80211_AUTH_MAX_TRIES 3
36#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
37#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
38#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
39#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 40
180205bd
BG		 41static int max_nullfunc_tries = 2;
42module_param(max_nullfunc_tries, int, 0644);
43MODULE_PARM_DESC(max_nullfunc_tries,
44 "Maximum nullfunc tx tries before disconnecting (reason 4).");
45
46static int max_probe_tries = 5;
47module_param(max_probe_tries, int, 0644);
48MODULE_PARM_DESC(max_probe_tries,
49 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 50
51/*
7ccc8bd7
FF		 52 * Beacon loss timeout is calculated as N frames times the
53 * advertised beacon interval. This may need to be somewhat
54 * higher than what hardware might detect to account for
55 * delays in the host processing frames. But since we also
56 * probe on beacon miss before declaring the connection lost
57 * default to what we want.
b291ba11 58 */
59c1ec2b
BG		 59static int beacon_loss_count = 7;
60module_param(beacon_loss_count, int, 0644);
61MODULE_PARM_DESC(beacon_loss_count,
62 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 63
b291ba11
JB		 64/*
65 * Time the connection can be idle before we probe
66 * it to see if we can still talk to the AP.
67 */
d1c5091f 68#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 69/*
70 * Time we wait for a probe response after sending
71 * a probe request because of beacon loss or for
72 * checking the connection still works.
73 */
180205bd
BG		 74static int probe_wait_ms = 500;
75module_param(probe_wait_ms, int, 0644);
76MODULE_PARM_DESC(probe_wait_ms,
77 "Maximum time(ms) to wait for probe response"
78 " before disconnecting (reason 4).");
f0706e82 79
17e4ec14
JM		 80/*
81 * Weight given to the latest Beacon frame when calculating average signal
82 * strength for Beacon frames received in the current BSS. This must be
83 * between 1 and 15.
84 */
85#define IEEE80211_SIGNAL_AVE_WEIGHT 3
86
391a200a
JM		 87/*
88 * How many Beacon frames need to have been used in average signal strength
89 * before starting to indicate signal change events.
90 */
91#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
92
ca386f31
JB		 93/*
94 * We can have multiple work items (and connection probing)
95 * scheduling this timer, but we need to take care to only
96 * reschedule it when it should fire _earlier_ than it was
97 * asked for before, or if it's not pending right now. This
98 * function ensures that. Note that it then is required to
99 * run this function for all timeouts after the first one
100 * has happened -- the work that runs from this timer will
101 * do that.
102 */
8d61ffa5
JB		 103static void run_again(struct ieee80211_sub_if_data *sdata,
104 unsigned long timeout)
ca386f31 105{
8d61ffa5 106 sdata_assert_lock(sdata);
ca386f31 107
8d61ffa5
JB		 108 if (!timer_pending(&sdata->u.mgd.timer) ||
109 time_before(timeout, sdata->u.mgd.timer.expires))
110 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 111}
112
d3a910a8 113void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 114{
c1288b12 115 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 116 return;
117
7eeff74c
JB		 118 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
119 return;
120
b291ba11 121 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 122 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 123}
124
be099e82
LR		 125void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
126{
0c699c3a
LR		 127 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
128
8628172f
SG		 129 if (unlikely(!sdata->u.mgd.associated))
130 return;
131
be099e82
LR		 132 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133 return;
134
135 mod_timer(&sdata->u.mgd.conn_mon_timer,
136 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
0c699c3a
LR		 137
138 ifmgd->probe_send_count = 0;
be099e82
LR		 139}
140
5484e237 141static int ecw2cw(int ecw)
60f8b39c 142{
5484e237 143 return (1 << ecw) - 1;
60f8b39c
JB		 144}
145
6565ec9b
JB		 146static u32 chandef_downgrade(struct cfg80211_chan_def *c)
147{
148 u32 ret;
149 int tmp;
150
151 switch (c->width) {
152 case NL80211_CHAN_WIDTH_20:
153 c->width = NL80211_CHAN_WIDTH_20_NOHT;
154 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
155 break;
156 case NL80211_CHAN_WIDTH_40:
157 c->width = NL80211_CHAN_WIDTH_20;
158 c->center_freq1 = c->chan->center_freq;
159 ret = IEEE80211_STA_DISABLE_40MHZ |
160 IEEE80211_STA_DISABLE_VHT;
161 break;
162 case NL80211_CHAN_WIDTH_80:
163 tmp = (30 + c->chan->center_freq - c->center_freq1)/20;
164 /* n_P40 */
165 tmp /= 2;
166 /* freq_P40 */
167 c->center_freq1 = c->center_freq1 - 20 + 40 * tmp;
168 c->width = NL80211_CHAN_WIDTH_40;
169 ret = IEEE80211_STA_DISABLE_VHT;
170 break;
171 case NL80211_CHAN_WIDTH_80P80:
172 c->center_freq2 = 0;
173 c->width = NL80211_CHAN_WIDTH_80;
174 ret = IEEE80211_STA_DISABLE_80P80MHZ |
175 IEEE80211_STA_DISABLE_160MHZ;
176 break;
177 case NL80211_CHAN_WIDTH_160:
178 /* n_P20 */
179 tmp = (70 + c->chan->center_freq - c->center_freq1)/20;
180 /* n_P80 */
181 tmp /= 4;
182 c->center_freq1 = c->center_freq1 - 40 + 80 * tmp;
183 c->width = NL80211_CHAN_WIDTH_80;
184 ret = IEEE80211_STA_DISABLE_80P80MHZ |
185 IEEE80211_STA_DISABLE_160MHZ;
186 break;
187 default:
188 case NL80211_CHAN_WIDTH_20_NOHT:
189 WARN_ON_ONCE(1);
190 c->width = NL80211_CHAN_WIDTH_20_NOHT;
191 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
192 break;
0418a445
SW		 193 case NL80211_CHAN_WIDTH_5:
194 case NL80211_CHAN_WIDTH_10:
195 WARN_ON_ONCE(1);
196 /* keep c->width */
197 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
198 break;
6565ec9b
JB		 199 }
200
201 WARN_ON_ONCE(!cfg80211_chandef_valid(c));
202
203 return ret;
204}
205
206static u32
207ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
208 struct ieee80211_supported_band *sband,
209 struct ieee80211_channel *channel,
210 const struct ieee80211_ht_operation *ht_oper,
211 const struct ieee80211_vht_operation *vht_oper,
30eb1dc2 212 struct cfg80211_chan_def *chandef, bool verbose)
6565ec9b
JB		 213{
214 struct cfg80211_chan_def vht_chandef;
215 u32 ht_cfreq, ret;
216
217 chandef->chan = channel;
218 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
219 chandef->center_freq1 = channel->center_freq;
220 chandef->center_freq2 = 0;
221
222 if (!ht_oper || !sband->ht_cap.ht_supported) {
223 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
224 goto out;
225 }
226
227 chandef->width = NL80211_CHAN_WIDTH_20;
228
229 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
230 channel->band);
231 /* check that channel matches the right operating channel */
232 if (channel->center_freq != ht_cfreq) {
233 /*
234 * It's possible that some APs are confused here;
235 * Netgear WNDR3700 sometimes reports 4 higher than
236 * the actual channel in association responses, but
237 * since we look at probe response/beacon data here
238 * it should be OK.
239 */
30eb1dc2
JB		 240 if (verbose)
241 sdata_info(sdata,
242 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
243 channel->center_freq, ht_cfreq,
244 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 245 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
246 goto out;
247 }
248
249 /* check 40 MHz support, if we have it */
250 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
251 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
252 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
253 chandef->width = NL80211_CHAN_WIDTH_40;
254 chandef->center_freq1 += 10;
255 break;
256 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
257 chandef->width = NL80211_CHAN_WIDTH_40;
258 chandef->center_freq1 -= 10;
259 break;
260 }
261 } else {
262 /* 40 MHz (and 80 MHz) must be supported for VHT */
263 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 264 /* also mark 40 MHz disabled */
265 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 266 goto out;
267 }
268
269 if (!vht_oper || !sband->vht_cap.vht_supported) {
270 ret = IEEE80211_STA_DISABLE_VHT;
271 goto out;
272 }
273
274 vht_chandef.chan = channel;
275 vht_chandef.center_freq1 =
276 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
277 channel->band);
278 vht_chandef.center_freq2 = 0;
279
6565ec9b
JB		 280 switch (vht_oper->chan_width) {
281 case IEEE80211_VHT_CHANWIDTH_USE_HT:
282 vht_chandef.width = chandef->width;
283 break;
284 case IEEE80211_VHT_CHANWIDTH_80MHZ:
285 vht_chandef.width = NL80211_CHAN_WIDTH_80;
286 break;
287 case IEEE80211_VHT_CHANWIDTH_160MHZ:
288 vht_chandef.width = NL80211_CHAN_WIDTH_160;
289 break;
290 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
291 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 292 vht_chandef.center_freq2 =
293 ieee80211_channel_to_frequency(
294 vht_oper->center_freq_seg2_idx,
295 channel->band);
6565ec9b
JB		 296 break;
297 default:
30eb1dc2
JB		 298 if (verbose)
299 sdata_info(sdata,
300 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
301 vht_oper->chan_width);
6565ec9b
JB		 302 ret = IEEE80211_STA_DISABLE_VHT;
303 goto out;
304 }
305
306 if (!cfg80211_chandef_valid(&vht_chandef)) {
30eb1dc2
JB		 307 if (verbose)
308 sdata_info(sdata,
309 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 310 ret = IEEE80211_STA_DISABLE_VHT;
311 goto out;
312 }
313
314 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
315 ret = 0;
316 goto out;
317 }
318
319 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
30eb1dc2
JB		 320 if (verbose)
321 sdata_info(sdata,
322 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 323 ret = IEEE80211_STA_DISABLE_VHT;
324 goto out;
325 }
326
327 *chandef = vht_chandef;
328
329 ret = 0;
330
331out:
586e01ed
JB		 332 /* don't print the message below for VHT mismatch if VHT is disabled */
333 if (ret & IEEE80211_STA_DISABLE_VHT)
334 vht_chandef = *chandef;
335
6565ec9b
JB		 336 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
337 IEEE80211_CHAN_DISABLED)) {
338 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
339 ret = IEEE80211_STA_DISABLE_HT |
340 IEEE80211_STA_DISABLE_VHT;
341 goto out;
342 }
343
344 ret |= chandef_downgrade(chandef);
345 }
346
30eb1dc2 347 if (chandef->width != vht_chandef.width && verbose)
6565ec9b
JB		 348 sdata_info(sdata,
349 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
350
351 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
352 return ret;
353}
354
30eb1dc2
JB		 355static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
356 struct sta_info *sta,
357 const struct ieee80211_ht_operation *ht_oper,
358 const struct ieee80211_vht_operation *vht_oper,
359 const u8 *bssid, u32 *changed)
d5522e03
JB		 360{
361 struct ieee80211_local *local = sdata->local;
30eb1dc2 362 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 363 struct ieee80211_supported_band *sband;
55de908a 364 struct ieee80211_channel *chan;
30eb1dc2 365 struct cfg80211_chan_def chandef;
9ed6bcce 366 u16 ht_opmode;
30eb1dc2
JB		 367 u32 flags;
368 enum ieee80211_sta_rx_bandwidth new_sta_bw;
369 int ret;
d5522e03 370
30eb1dc2
JB		 371 /* if HT was/is disabled, don't track any bandwidth changes */
372 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 373 return 0;
374
30eb1dc2
JB		 375 /* don't check VHT if we associated as non-VHT station */
376 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
377 vht_oper = NULL;
378
379 if (WARN_ON_ONCE(!sta))
380 return -EINVAL;
381
f2d9330e 382 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 383 sband = local->hw.wiphy->bands[chan->band];
d5522e03 384
30eb1dc2
JB		 385 /* calculate new channel (type) based on HT/VHT operation IEs */
386 flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
387 vht_oper, &chandef, false);
388
389 /*
390 * Downgrade the new channel if we associated with restricted
391 * capabilities. For example, if we associated as a 20 MHz STA
392 * to a 40 MHz AP (due to regulatory, capabilities or config
393 * reasons) then switching to a 40 MHz channel now won't do us
394 * any good -- we couldn't use it with the AP.
395 */
396 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
397 chandef.width == NL80211_CHAN_WIDTH_80P80)
398 flags |= chandef_downgrade(&chandef);
399 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
400 chandef.width == NL80211_CHAN_WIDTH_160)
401 flags |= chandef_downgrade(&chandef);
402 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
403 chandef.width > NL80211_CHAN_WIDTH_20)
404 flags |= chandef_downgrade(&chandef);
405
406 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
407 return 0;
408
409 sdata_info(sdata,
410 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
411 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
412 chandef.center_freq1, chandef.center_freq2);
413
414 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
415 IEEE80211_STA_DISABLE_VHT |
416 IEEE80211_STA_DISABLE_40MHZ |
417 IEEE80211_STA_DISABLE_80P80MHZ |
418 IEEE80211_STA_DISABLE_160MHZ)) ||
419 !cfg80211_chandef_valid(&chandef)) {
420 sdata_info(sdata,
421 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
422 ifmgd->bssid);
423 return -EINVAL;
424 }
425
426 switch (chandef.width) {
427 case NL80211_CHAN_WIDTH_20_NOHT:
428 case NL80211_CHAN_WIDTH_20:
429 new_sta_bw = IEEE80211_STA_RX_BW_20;
430 break;
4bf88530 431 case NL80211_CHAN_WIDTH_40:
30eb1dc2 432 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 433 break;
30eb1dc2
JB		 434 case NL80211_CHAN_WIDTH_80:
435 new_sta_bw = IEEE80211_STA_RX_BW_80;
436 break;
437 case NL80211_CHAN_WIDTH_80P80:
438 case NL80211_CHAN_WIDTH_160:
439 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 440 break;
30eb1dc2
JB		 441 default:
442 return -EINVAL;
64f68e5d 443 }
d5522e03 444
30eb1dc2
JB		 445 if (new_sta_bw > sta->cur_max_bandwidth)
446 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 447
30eb1dc2
JB		 448 if (new_sta_bw < sta->sta.bandwidth) {
449 sta->sta.bandwidth = new_sta_bw;
450 rate_control_rate_update(local, sband, sta,
451 IEEE80211_RC_BW_CHANGED);
452 }
64f68e5d 453
30eb1dc2
JB		 454 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
455 if (ret) {
456 sdata_info(sdata,
457 "AP %pM changed bandwidth to incompatible one - disconnect\n",
458 ifmgd->bssid);
459 return ret;
460 }
7cc44ed4 461
30eb1dc2
JB		 462 if (new_sta_bw > sta->sta.bandwidth) {
463 sta->sta.bandwidth = new_sta_bw;
464 rate_control_rate_update(local, sband, sta,
465 IEEE80211_RC_BW_CHANGED);
0aaffa9b 466 }
d5522e03 467
074d46d1 468 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
d5522e03
JB		 469
470 /* if bss configuration changed store the new one */
30eb1dc2
JB		 471 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
472 *changed |= BSS_CHANGED_HT;
9ed6bcce 473 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
d5522e03
JB		 474 }
475
30eb1dc2 476 return 0;
d5522e03
JB		 477}
478
9c6bd790
JB		 479/* frame sending functions */
480
66e67e41 481static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 482 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 483 struct ieee80211_supported_band *sband,
484 struct ieee80211_channel *channel,
485 enum ieee80211_smps_mode smps)
486{
66e67e41
JB		 487 u8 *pos;
488 u32 flags = channel->flags;
489 u16 cap;
490 struct ieee80211_sta_ht_cap ht_cap;
491
492 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
493
66e67e41
JB		 494 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
495 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
496
66e67e41
JB		 497 /* determine capability flags */
498 cap = ht_cap.cap;
499
9dde6423 500 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 501 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
502 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
503 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
504 cap &= ~IEEE80211_HT_CAP_SGI_40;
505 }
506 break;
507 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
508 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
509 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
510 cap &= ~IEEE80211_HT_CAP_SGI_40;
511 }
512 break;
513 }
514
24398e39
JB		 515 /*
516 * If 40 MHz was disabled associate as though we weren't
517 * capable of 40 MHz -- some broken APs will never fall
518 * back to trying to transmit in 20 MHz.
519 */
520 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
521 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
522 cap &= ~IEEE80211_HT_CAP_SGI_40;
523 }
524
66e67e41
JB		 525 /* set SM PS mode properly */
526 cap &= ~IEEE80211_HT_CAP_SM_PS;
527 switch (smps) {
528 case IEEE80211_SMPS_AUTOMATIC:
529 case IEEE80211_SMPS_NUM_MODES:
530 WARN_ON(1);
531 case IEEE80211_SMPS_OFF:
532 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
533 IEEE80211_HT_CAP_SM_PS_SHIFT;
534 break;
535 case IEEE80211_SMPS_STATIC:
536 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
537 IEEE80211_HT_CAP_SM_PS_SHIFT;
538 break;
539 case IEEE80211_SMPS_DYNAMIC:
540 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
541 IEEE80211_HT_CAP_SM_PS_SHIFT;
542 break;
543 }
544
545 /* reserve and fill IE */
546 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
547 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
548}
549
d545daba
MP		 550static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
551 struct sk_buff *skb,
b08fbbd8
JB		 552 struct ieee80211_supported_band *sband,
553 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 554{
555 u8 *pos;
556 u32 cap;
557 struct ieee80211_sta_vht_cap vht_cap;
558
559 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
560
561 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 562 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 563
564 /* determine capability flags */
565 cap = vht_cap.cap;
566
f2d9d270
JB		 567 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
568 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
569 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
570 }
571
572 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
573 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
574 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
575 }
576
b08fbbd8
JB		 577 /*
578 * Some APs apparently get confused if our capabilities are better
579 * than theirs, so restrict what we advertise in the assoc request.
580 */
581 if (!(ap_vht_cap->vht_cap_info &
582 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
583 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
584
d545daba 585 /* reserve and fill IE */
d4950281 586 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 587 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
588}
589
66e67e41
JB		 590static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
591{
592 struct ieee80211_local *local = sdata->local;
593 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
594 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
595 struct sk_buff *skb;
596 struct ieee80211_mgmt *mgmt;
597 u8 *pos, qos_info;
598 size_t offset = 0, noffset;
2103dec1 599 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 600 u16 capab;
601 struct ieee80211_supported_band *sband;
55de908a
JB		 602 struct ieee80211_chanctx_conf *chanctx_conf;
603 struct ieee80211_channel *chan;
2103dec1 604 u32 rate_flags, rates = 0;
66e67e41 605
8d61ffa5 606 sdata_assert_lock(sdata);
66e67e41 607
55de908a
JB		 608 rcu_read_lock();
609 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
610 if (WARN_ON(!chanctx_conf)) {
611 rcu_read_unlock();
612 return;
613 }
4bf88530 614 chan = chanctx_conf->def.chan;
2103dec1 615 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 616 rcu_read_unlock();
617 sband = local->hw.wiphy->bands[chan->band];
2103dec1 618 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 619
620 if (assoc_data->supp_rates_len) {
621 /*
622 * Get all rates supported by the device and the AP as
623 * some APs don't like getting a superset of their rates
624 * in the association request (e.g. D-Link DAP 1353 in
625 * b-only mode)...
626 */
2103dec1
SW		 627 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
628 assoc_data->supp_rates,
629 assoc_data->supp_rates_len,
630 &rates);
66e67e41
JB		 631 } else {
632 /*
633 * In case AP not provide any supported rates information
634 * before association, we send information element(s) with
635 * all rates that we support.
636 */
2103dec1
SW		 637 rates_len = 0;
638 for (i = 0; i < sband->n_bitrates; i++) {
639 if ((rate_flags & sband->bitrates[i].flags)
640 != rate_flags)
641 continue;
642 rates |= BIT(i);
643 rates_len++;
644 }
66e67e41
JB		 645 }
646
647 skb = alloc_skb(local->hw.extra_tx_headroom +
648 sizeof(*mgmt) + /* bit too much but doesn't matter */
649 2 + assoc_data->ssid_len + /* SSID */
650 4 + rates_len + /* (extended) rates */
651 4 + /* power capability */
652 2 + 2 * sband->n_channels + /* supported channels */
653 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 654 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 655 assoc_data->ie_len + /* extra IEs */
656 9, /* WMM */
657 GFP_KERNEL);
658 if (!skb)
659 return;
660
661 skb_reserve(skb, local->hw.extra_tx_headroom);
662
663 capab = WLAN_CAPABILITY_ESS;
664
665 if (sband->band == IEEE80211_BAND_2GHZ) {
666 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
667 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
668 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
669 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
670 }
671
672 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
673 capab |= WLAN_CAPABILITY_PRIVACY;
674
675 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
676 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
677 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
678
679 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
680 memset(mgmt, 0, 24);
681 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
682 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
683 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
684
685 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
686 skb_put(skb, 10);
687 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
688 IEEE80211_STYPE_REASSOC_REQ);
689 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
690 mgmt->u.reassoc_req.listen_interval =
691 cpu_to_le16(local->hw.conf.listen_interval);
692 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
693 ETH_ALEN);
694 } else {
695 skb_put(skb, 4);
696 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
697 IEEE80211_STYPE_ASSOC_REQ);
698 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
699 mgmt->u.assoc_req.listen_interval =
700 cpu_to_le16(local->hw.conf.listen_interval);
701 }
702
703 /* SSID */
704 pos = skb_put(skb, 2 + assoc_data->ssid_len);
705 *pos++ = WLAN_EID_SSID;
706 *pos++ = assoc_data->ssid_len;
707 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
708
709 /* add all rates which were marked to be used above */
710 supp_rates_len = rates_len;
711 if (supp_rates_len > 8)
712 supp_rates_len = 8;
713
714 pos = skb_put(skb, supp_rates_len + 2);
715 *pos++ = WLAN_EID_SUPP_RATES;
716 *pos++ = supp_rates_len;
717
718 count = 0;
719 for (i = 0; i < sband->n_bitrates; i++) {
720 if (BIT(i) & rates) {
2103dec1
SW		 721 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
722 5 * (1 << shift));
723 *pos++ = (u8) rate;
66e67e41
JB		 724 if (++count == 8)
725 break;
726 }
727 }
728
729 if (rates_len > count) {
730 pos = skb_put(skb, rates_len - count + 2);
731 *pos++ = WLAN_EID_EXT_SUPP_RATES;
732 *pos++ = rates_len - count;
733
734 for (i++; i < sband->n_bitrates; i++) {
735 if (BIT(i) & rates) {
2103dec1
SW		 736 int rate;
737 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
738 5 * (1 << shift));
739 *pos++ = (u8) rate;
66e67e41
JB		 740 }
741 }
742 }
743
744 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
745 /* 1. power capabilities */
746 pos = skb_put(skb, 4);
747 *pos++ = WLAN_EID_PWR_CAPABILITY;
748 *pos++ = 2;
749 *pos++ = 0; /* min tx power */
55de908a 750 *pos++ = chan->max_power; /* max tx power */
66e67e41
JB		 751
752 /* 2. supported channels */
753 /* TODO: get this in reg domain format */
754 pos = skb_put(skb, 2 * sband->n_channels + 2);
755 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
756 *pos++ = 2 * sband->n_channels;
757 for (i = 0; i < sband->n_channels; i++) {
758 *pos++ = ieee80211_frequency_to_channel(
759 sband->channels[i].center_freq);
760 *pos++ = 1; /* one channel in the subband*/
761 }
762 }
763
764 /* if present, add any custom IEs that go before HT */
765 if (assoc_data->ie_len && assoc_data->ie) {
766 static const u8 before_ht[] = {
767 WLAN_EID_SSID,
768 WLAN_EID_SUPP_RATES,
769 WLAN_EID_EXT_SUPP_RATES,
770 WLAN_EID_PWR_CAPABILITY,
771 WLAN_EID_SUPPORTED_CHANNELS,
772 WLAN_EID_RSN,
773 WLAN_EID_QOS_CAPA,
774 WLAN_EID_RRM_ENABLED_CAPABILITIES,
775 WLAN_EID_MOBILITY_DOMAIN,
776 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
777 };
778 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
779 before_ht, ARRAY_SIZE(before_ht),
780 offset);
781 pos = skb_put(skb, noffset - offset);
782 memcpy(pos, assoc_data->ie + offset, noffset - offset);
783 offset = noffset;
784 }
785
f2d9d270
JB		 786 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
787 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
788 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
789
a8243b72 790 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 791 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 792 sband, chan, sdata->smps_mode);
66e67e41 793
d545daba 794 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 795 ieee80211_add_vht_ie(sdata, skb, sband,
796 &assoc_data->ap_vht_cap);
d545daba 797
66e67e41
JB		 798 /* if present, add any custom non-vendor IEs that go after HT */
799 if (assoc_data->ie_len && assoc_data->ie) {
800 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
801 assoc_data->ie_len,
802 offset);
803 pos = skb_put(skb, noffset - offset);
804 memcpy(pos, assoc_data->ie + offset, noffset - offset);
805 offset = noffset;
806 }
807
76f0303d
JB		 808 if (assoc_data->wmm) {
809 if (assoc_data->uapsd) {
dc41e4d4
EP		 810 qos_info = ifmgd->uapsd_queues;
811 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 812 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
813 } else {
814 qos_info = 0;
815 }
816
817 pos = skb_put(skb, 9);
818 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
819 *pos++ = 7; /* len */
820 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
821 *pos++ = 0x50;
822 *pos++ = 0xf2;
823 *pos++ = 2; /* WME */
824 *pos++ = 0; /* WME info */
825 *pos++ = 1; /* WME ver */
826 *pos++ = qos_info;
827 }
828
829 /* add any remaining custom (i.e. vendor specific here) IEs */
830 if (assoc_data->ie_len && assoc_data->ie) {
831 noffset = assoc_data->ie_len;
832 pos = skb_put(skb, noffset - offset);
833 memcpy(pos, assoc_data->ie + offset, noffset - offset);
834 }
835
a1845fc7
JB		 836 drv_mgd_prepare_tx(local, sdata);
837
66e67e41 838 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 839 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
840 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
841 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 842 ieee80211_tx_skb(sdata, skb);
843}
844
572e0012
KV		 845void ieee80211_send_pspoll(struct ieee80211_local *local,
846 struct ieee80211_sub_if_data *sdata)
847{
572e0012
KV		 848 struct ieee80211_pspoll *pspoll;
849 struct sk_buff *skb;
572e0012 850
d8cd189e
KV		 851 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
852 if (!skb)
572e0012 853 return;
572e0012 854
d8cd189e
KV		 855 pspoll = (struct ieee80211_pspoll *) skb->data;
856 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 857
62ae67be
JB		 858 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
859 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 860}
861
965bedad
JB		 862void ieee80211_send_nullfunc(struct ieee80211_local *local,
863 struct ieee80211_sub_if_data *sdata,
864 int powersave)
865{
866 struct sk_buff *skb;
d8cd189e 867 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 868 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 869
d8cd189e
KV		 870 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
871 if (!skb)
965bedad 872 return;
965bedad 873
d8cd189e 874 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 875 if (powersave)
d8cd189e 876 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 877
6c17b77b
SF		 878 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
879 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 880
881 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
882 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
883
b6f35301
RM		 884 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
885 IEEE80211_STA_CONNECTION_POLL))
886 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
887
62ae67be 888 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 889}
890
d524215f
FF		 891static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
892 struct ieee80211_sub_if_data *sdata)
893{
894 struct sk_buff *skb;
895 struct ieee80211_hdr *nullfunc;
896 __le16 fc;
897
898 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
899 return;
900
901 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 902 if (!skb)
d524215f 903 return;
d15b8459 904
d524215f
FF		 905 skb_reserve(skb, local->hw.extra_tx_headroom);
906
907 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
908 memset(nullfunc, 0, 30);
909 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
910 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
911 nullfunc->frame_control = fc;
912 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
913 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
914 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
915 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
916
917 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
918 ieee80211_tx_skb(sdata, skb);
919}
920
cc32abd4
JB		 921/* spectrum management related things */
922static void ieee80211_chswitch_work(struct work_struct *work)
923{
924 struct ieee80211_sub_if_data *sdata =
925 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 926 struct ieee80211_local *local = sdata->local;
cc32abd4
JB		 927 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
928
9607e6b6 929 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 930 return;
931
8d61ffa5 932 sdata_lock(sdata);
77fdaa12
JB		 933 if (!ifmgd->associated)
934 goto out;
cc32abd4 935
85220d71 936 local->_oper_chandef = local->csa_chandef;
675a0b04
KB		 937
938 if (!local->ops->channel_switch) {
5ce6e438 939 /* call "hw_config" only if doing sw channel switch */
675a0b04 940 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1ea57b1f
SL		 941 } else {
942 /* update the device channel directly */
675a0b04 943 local->hw.conf.chandef = local->_oper_chandef;
5ce6e438 944 }
77fdaa12 945
cc32abd4 946 /* XXX: shouldn't really modify cfg80211-owned data! */
675a0b04 947 ifmgd->associated->channel = local->_oper_chandef.chan;
cc32abd4 948
57eebdf3 949 /* XXX: wait for a beacon first? */
675a0b04 950 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 951 IEEE80211_MAX_QUEUE_MAP,
cc32abd4 952 IEEE80211_QUEUE_STOP_REASON_CSA);
77fdaa12
JB		 953 out:
954 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
8d61ffa5 955 sdata_unlock(sdata);
cc32abd4
JB		 956}
957
5ce6e438
JB		 958void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
959{
55de908a
JB		 960 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
961 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 962
963 trace_api_chswitch_done(sdata, success);
964 if (!success) {
882a7c69
JB		 965 sdata_info(sdata,
966 "driver channel switch failed, disconnecting\n");
967 ieee80211_queue_work(&sdata->local->hw,
968 &ifmgd->csa_connection_drop_work);
969 } else {
970 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 971 }
5ce6e438
JB		 972}
973EXPORT_SYMBOL(ieee80211_chswitch_done);
974
cc32abd4
JB		 975static void ieee80211_chswitch_timer(unsigned long data)
976{
977 struct ieee80211_sub_if_data *sdata =
978 (struct ieee80211_sub_if_data *) data;
5bb644a0 979
9b7d72c1 980 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 981}
982
37799e52 983static void
4a3cb702 984ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
04a161f4
JB		 985 u64 timestamp, struct ieee802_11_elems *elems,
986 bool beacon)
cc32abd4 987{
b4f286a1 988 struct ieee80211_local *local = sdata->local;
cc32abd4 989 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52
JB		 990 struct cfg80211_bss *cbss = ifmgd->associated;
991 struct ieee80211_bss *bss;
55de908a 992 struct ieee80211_chanctx *chanctx;
b4f286a1
JB		 993 enum ieee80211_band new_band;
994 int new_freq;
995 u8 new_chan_no;
996 u8 count;
997 u8 mode;
cd64f2a9 998 struct ieee80211_channel *new_chan;
85220d71 999 struct cfg80211_chan_def new_chandef = {};
cd64f2a9
JB		 1000 struct cfg80211_chan_def new_vht_chandef = {};
1001 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
1002 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
04a161f4 1003 const struct ieee80211_ht_operation *ht_oper;
85220d71 1004 int secondary_channel_offset = -1;
cc32abd4 1005
8d61ffa5 1006 sdata_assert_lock(sdata);
77fdaa12 1007
37799e52 1008 if (!cbss)
cc32abd4
JB		 1009 return;
1010
b4f286a1 1011 if (local->scanning)
cc32abd4
JB		 1012 return;
1013
37799e52 1014 /* disregard subsequent announcements if we are already processing */
cc32abd4
JB		 1015 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
1016 return;
1017
cd64f2a9
JB		 1018 sec_chan_offs = elems->sec_chan_offs;
1019 wide_bw_chansw_ie = elems->wide_bw_chansw_ie;
04a161f4 1020 ht_oper = elems->ht_operation;
cd64f2a9
JB		 1021
1022 if (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
1023 IEEE80211_STA_DISABLE_40MHZ)) {
1024 sec_chan_offs = NULL;
1025 wide_bw_chansw_ie = NULL;
04a161f4
JB		 1026 /* only used for bandwidth here */
1027 ht_oper = NULL;
85220d71
JB		 1028 }
1029
cd64f2a9
JB		 1030 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
1031 wide_bw_chansw_ie = NULL;
85220d71 1032
b4f286a1
JB		 1033 if (elems->ext_chansw_ie) {
1034 if (!ieee80211_operating_class_to_band(
1035 elems->ext_chansw_ie->new_operating_class,
1036 &new_band)) {
1037 sdata_info(sdata,
1038 "cannot understand ECSA IE operating class %d, disconnecting\n",
1039 elems->ext_chansw_ie->new_operating_class);
1040 ieee80211_queue_work(&local->hw,
1041 &ifmgd->csa_connection_drop_work);
1042 }
1043 new_chan_no = elems->ext_chansw_ie->new_ch_num;
1044 count = elems->ext_chansw_ie->count;
1045 mode = elems->ext_chansw_ie->mode;
1046 } else if (elems->ch_switch_ie) {
1047 new_band = cbss->channel->band;
1048 new_chan_no = elems->ch_switch_ie->new_ch_num;
1049 count = elems->ch_switch_ie->count;
1050 mode = elems->ch_switch_ie->mode;
1051 } else {
1052 /* nothing here we understand */
37799e52 1053 return;
b4f286a1 1054 }
37799e52
JB		 1055
1056 bss = (void *)cbss->priv;
1057
b4f286a1 1058 new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band);
cd64f2a9
JB		 1059 new_chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
1060 if (!new_chan || new_chan->flags & IEEE80211_CHAN_DISABLED) {
882a7c69
JB		 1061 sdata_info(sdata,
1062 "AP %pM switches to unsupported channel (%d MHz), disconnecting\n",
1063 ifmgd->associated->bssid, new_freq);
b4f286a1 1064 ieee80211_queue_work(&local->hw,
882a7c69 1065 &ifmgd->csa_connection_drop_work);
cc32abd4 1066 return;
882a7c69 1067 }
cc32abd4 1068
04a161f4 1069 if (!beacon && sec_chan_offs) {
cd64f2a9 1070 secondary_channel_offset = sec_chan_offs->sec_chan_offs;
04a161f4
JB		 1071 } else if (beacon && ht_oper) {
1072 secondary_channel_offset =
1073 ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET;
cd64f2a9 1074 } else if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
04a161f4
JB		 1075 /*
1076 * If it's not a beacon, HT is enabled and the IE not present,
1077 * it's 20 MHz, 802.11-2012 8.5.2.6:
1078 * This element [the Secondary Channel Offset Element] is
1079 * present when switching to a 40 MHz channel. It may be
1080 * present when switching to a 20 MHz channel (in which
1081 * case the secondary channel offset is set to SCN).
1082 */
cd64f2a9
JB		 1083 secondary_channel_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
1084 }
1085
85220d71
JB		 1086 switch (secondary_channel_offset) {
1087 default:
1088 /* secondary_channel_offset was present but is invalid */
1089 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
cd64f2a9 1090 cfg80211_chandef_create(&new_chandef, new_chan,
85220d71
JB		 1091 NL80211_CHAN_HT20);
1092 break;
1093 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
cd64f2a9 1094 cfg80211_chandef_create(&new_chandef, new_chan,
85220d71
JB		 1095 NL80211_CHAN_HT40PLUS);
1096 break;
1097 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
cd64f2a9 1098 cfg80211_chandef_create(&new_chandef, new_chan,
85220d71
JB		 1099 NL80211_CHAN_HT40MINUS);
1100 break;
1101 case -1:
cd64f2a9 1102 cfg80211_chandef_create(&new_chandef, new_chan,
85220d71
JB		 1103 NL80211_CHAN_NO_HT);
1104 break;
1105 }
1106
cd64f2a9
JB		 1107 if (wide_bw_chansw_ie) {
1108 new_vht_chandef.chan = new_chan;
1109 new_vht_chandef.center_freq1 =
1110 ieee80211_channel_to_frequency(
1111 wide_bw_chansw_ie->new_center_freq_seg0,
1112 new_band);
1113
1114 switch (wide_bw_chansw_ie->new_channel_width) {
1115 default:
1116 /* hmmm, ignore VHT and use HT if present */
1117 case IEEE80211_VHT_CHANWIDTH_USE_HT:
1118 new_vht_chandef.chan = NULL;
1119 break;
1120 case IEEE80211_VHT_CHANWIDTH_80MHZ:
1121 new_vht_chandef.width = NL80211_CHAN_WIDTH_80;
1122 break;
1123 case IEEE80211_VHT_CHANWIDTH_160MHZ:
1124 new_vht_chandef.width = NL80211_CHAN_WIDTH_160;
1125 break;
1126 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
1127 /* field is otherwise reserved */
1128 new_vht_chandef.center_freq2 =
1129 ieee80211_channel_to_frequency(
1130 wide_bw_chansw_ie->new_center_freq_seg1,
1131 new_band);
1132 new_vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
1133 break;
1134 }
1135 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
1136 new_vht_chandef.width == NL80211_CHAN_WIDTH_80P80)
1137 chandef_downgrade(&new_vht_chandef);
1138 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
1139 new_vht_chandef.width == NL80211_CHAN_WIDTH_160)
1140 chandef_downgrade(&new_vht_chandef);
1141 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
1142 new_vht_chandef.width > NL80211_CHAN_WIDTH_20)
1143 chandef_downgrade(&new_vht_chandef);
1144 }
1145
1146 /* if VHT data is there validate & use it */
1147 if (new_vht_chandef.chan) {
1148 if (!cfg80211_chandef_compatible(&new_vht_chandef,
1149 &new_chandef)) {
1150 sdata_info(sdata,
1151 "AP %pM CSA has inconsistent channel data, disconnecting\n",
1152 ifmgd->associated->bssid);
1153 ieee80211_queue_work(&local->hw,
1154 &ifmgd->csa_connection_drop_work);
1155 return;
1156 }
1157 new_chandef = new_vht_chandef;
1158 }
1159
85220d71
JB		 1160 if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef,
1161 IEEE80211_CHAN_DISABLED)) {
1162 sdata_info(sdata,
1163 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
1164 ifmgd->associated->bssid, new_freq,
1165 new_chandef.width, new_chandef.center_freq1,
1166 new_chandef.center_freq2);
1167 ieee80211_queue_work(&local->hw,
1168 &ifmgd->csa_connection_drop_work);
1169 return;
1170 }
1171
57eebdf3
JB		 1172 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
1173
b4f286a1 1174 if (local->use_chanctx) {
55de908a
JB		 1175 sdata_info(sdata,
1176 "not handling channel switch with channel contexts\n");
b4f286a1 1177 ieee80211_queue_work(&local->hw,
55de908a 1178 &ifmgd->csa_connection_drop_work);
246dc3fd 1179 return;
55de908a
JB		 1180 }
1181
b4f286a1 1182 mutex_lock(&local->chanctx_mtx);
55de908a 1183 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
b4f286a1 1184 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1185 return;
1186 }
1187 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
1188 struct ieee80211_chanctx, conf);
1189 if (chanctx->refcount > 1) {
1190 sdata_info(sdata,
1191 "channel switch with multiple interfaces on the same channel, disconnecting\n");
b4f286a1 1192 ieee80211_queue_work(&local->hw,
55de908a 1193 &ifmgd->csa_connection_drop_work);
b4f286a1 1194 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1195 return;
1196 }
b4f286a1 1197 mutex_unlock(&local->chanctx_mtx);
55de908a 1198
85220d71 1199 local->csa_chandef = new_chandef;
55de908a 1200
b4f286a1
JB		 1201 if (mode)
1202 ieee80211_stop_queues_by_reason(&local->hw,
445ea4e8 1203 IEEE80211_MAX_QUEUE_MAP,
57eebdf3
JB		 1204 IEEE80211_QUEUE_STOP_REASON_CSA);
1205
b4f286a1 1206 if (local->ops->channel_switch) {
5ce6e438 1207 /* use driver's channel switch callback */
57eebdf3
JB		 1208 struct ieee80211_channel_switch ch_switch = {
1209 .timestamp = timestamp,
b4f286a1 1210 .block_tx = mode,
85220d71 1211 .chandef = new_chandef,
b4f286a1 1212 .count = count,
57eebdf3
JB		 1213 };
1214
b4f286a1 1215 drv_channel_switch(local, &ch_switch);
5ce6e438
JB		 1216 return;
1217 }
1218
1219 /* channel switch handled in software */
b4f286a1
JB		 1220 if (count <= 1)
1221 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1222 else
cc32abd4 1223 mod_timer(&ifmgd->chswitch_timer,
b4f286a1 1224 TU_TO_EXP_TIME(count * cbss->beacon_interval));
cc32abd4
JB		 1225}
1226
1ea6f9c0
JB		 1227static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1228 struct ieee80211_channel *channel,
1229 const u8 *country_ie, u8 country_ie_len,
1230 const u8 *pwr_constr_elem)
cc32abd4 1231{
04b7b2ff
JB		 1232 struct ieee80211_country_ie_triplet *triplet;
1233 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1234 int i, chan_pwr, chan_increment, new_ap_level;
1235 bool have_chan_pwr = false;
cc32abd4 1236
04b7b2ff
JB		 1237 /* Invalid IE */
1238 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 1239 return 0;
cc32abd4 1240
04b7b2ff
JB		 1241 triplet = (void *)(country_ie + 3);
1242 country_ie_len -= 3;
1243
1244 switch (channel->band) {
1245 default:
1246 WARN_ON_ONCE(1);
1247 /* fall through */
1248 case IEEE80211_BAND_2GHZ:
1249 case IEEE80211_BAND_60GHZ:
1250 chan_increment = 1;
1251 break;
1252 case IEEE80211_BAND_5GHZ:
1253 chan_increment = 4;
1254 break;
cc32abd4 1255 }
04b7b2ff
JB		 1256
1257 /* find channel */
1258 while (country_ie_len >= 3) {
1259 u8 first_channel = triplet->chans.first_channel;
1260
1261 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1262 goto next;
1263
1264 for (i = 0; i < triplet->chans.num_channels; i++) {
1265 if (first_channel + i * chan_increment == chan) {
1266 have_chan_pwr = true;
1267 chan_pwr = triplet->chans.max_power;
1268 break;
1269 }
1270 }
1271 if (have_chan_pwr)
1272 break;
1273
1274 next:
1275 triplet++;
1276 country_ie_len -= 3;
1277 }
1278
1279 if (!have_chan_pwr)
1ea6f9c0 1280 return 0;
04b7b2ff
JB		 1281
1282 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
1283
1ea6f9c0
JB		 1284 if (sdata->ap_power_level == new_ap_level)
1285 return 0;
04b7b2ff
JB		 1286
1287 sdata_info(sdata,
1288 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1289 new_ap_level, chan_pwr, *pwr_constr_elem,
1290 sdata->u.mgd.bssid);
1ea6f9c0
JB		 1291 sdata->ap_power_level = new_ap_level;
1292 if (__ieee80211_recalc_txpower(sdata))
1293 return BSS_CHANGED_TXPOWER;
1294 return 0;
cc32abd4
JB		 1295}
1296
965bedad
JB		 1297/* powersave */
1298static void ieee80211_enable_ps(struct ieee80211_local *local,
1299 struct ieee80211_sub_if_data *sdata)
1300{
1301 struct ieee80211_conf *conf = &local->hw.conf;
1302
d5edaedc
JB		 1303 /*
1304 * If we are scanning right now then the parameters will
1305 * take effect when scan finishes.
1306 */
fbe9c429 1307 if (local->scanning)
d5edaedc
JB		 1308 return;
1309
965bedad
JB		 1310 if (conf->dynamic_ps_timeout > 0 &&
1311 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1312 mod_timer(&local->dynamic_ps_timer, jiffies +
1313 msecs_to_jiffies(conf->dynamic_ps_timeout));
1314 } else {
1315 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1316 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1317
2a13052f
JO		 1318 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1319 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1320 return;
1321
1322 conf->flags |= IEEE80211_CONF_PS;
1323 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1324 }
1325}
1326
1327static void ieee80211_change_ps(struct ieee80211_local *local)
1328{
1329 struct ieee80211_conf *conf = &local->hw.conf;
1330
1331 if (local->ps_sdata) {
965bedad
JB		 1332 ieee80211_enable_ps(local, local->ps_sdata);
1333 } else if (conf->flags & IEEE80211_CONF_PS) {
1334 conf->flags &= ~IEEE80211_CONF_PS;
1335 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1336 del_timer_sync(&local->dynamic_ps_timer);
1337 cancel_work_sync(&local->dynamic_ps_enable_work);
1338 }
1339}
1340
808118cb
JY		 1341static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1342{
1343 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1344 struct sta_info *sta = NULL;
c2c98fde 1345 bool authorized = false;
808118cb
JY		 1346
1347 if (!mgd->powersave)
1348 return false;
1349
05cb9108
JB		 1350 if (mgd->broken_ap)
1351 return false;
1352
808118cb
JY		 1353 if (!mgd->associated)
1354 return false;
1355
808118cb
JY		 1356 if (mgd->flags & (IEEE80211_STA_BEACON_POLL |
1357 IEEE80211_STA_CONNECTION_POLL))
1358 return false;
1359
989c6505 1360 if (!mgd->have_beacon)
ce857888
AB		 1361 return false;
1362
808118cb
JY		 1363 rcu_read_lock();
1364 sta = sta_info_get(sdata, mgd->bssid);
1365 if (sta)
c2c98fde 1366 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1367 rcu_read_unlock();
1368
c2c98fde 1369 return authorized;
808118cb
JY		 1370}
1371
965bedad 1372/* need to hold RTNL or interface lock */
10f644a4 1373void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1374{
1375 struct ieee80211_sub_if_data *sdata, *found = NULL;
1376 int count = 0;
195e294d 1377 int timeout;
965bedad
JB		 1378
1379 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1380 local->ps_sdata = NULL;
1381 return;
1382 }
1383
1384 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1385 if (!ieee80211_sdata_running(sdata))
965bedad 1386 continue;
8c7914de
RM		 1387 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1388 /* If an AP vif is found, then disable PS
1389 * by setting the count to zero thereby setting
1390 * ps_sdata to NULL.
1391 */
1392 count = 0;
1393 break;
1394 }
965bedad
JB		 1395 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1396 continue;
1397 found = sdata;
1398 count++;
1399 }
1400
808118cb 1401 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1402 s32 beaconint_us;
1403
1404 if (latency < 0)
ed77134b 1405 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1406
1407 beaconint_us = ieee80211_tu_to_usec(
1408 found->vif.bss_conf.beacon_int);
1409
ff616381 1410 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1411 if (timeout < 0) {
1412 /*
ff616381
JO		 1413 * Go to full PSM if the user configures a very low
1414 * latency requirement.
0ab82b04
EP		 1415 * The 2000 second value is there for compatibility
1416 * until the PM_QOS_NETWORK_LATENCY is configured
1417 * with real values.
195e294d 1418 */
0ab82b04
EP		 1419 if (latency > (1900 * USEC_PER_MSEC) &&
1420 latency != (2000 * USEC_PER_SEC))
195e294d 1421 timeout = 0;
ff616381
JO		 1422 else
1423 timeout = 100;
195e294d 1424 }
09b85568 1425 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1426
04fe2037 1427 if (beaconint_us > latency) {
10f644a4 1428 local->ps_sdata = NULL;
04fe2037 1429 } else {
04fe2037 1430 int maxslp = 1;
826262c3 1431 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1432
1433 /* If the TIM IE is invalid, pretend the value is 1 */
1434 if (!dtimper)
1435 dtimper = 1;
1436 else if (dtimper > 1)
04fe2037
JB		 1437 maxslp = min_t(int, dtimper,
1438 latency / beaconint_us);
1439
9ccebe61 1440 local->hw.conf.max_sleep_period = maxslp;
56007a02 1441 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1442 local->ps_sdata = found;
04fe2037 1443 }
10f644a4 1444 } else {
965bedad 1445 local->ps_sdata = NULL;
10f644a4 1446 }
965bedad
JB		 1447
1448 ieee80211_change_ps(local);
1449}
1450
ab095877
EP		 1451void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1452{
1453 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1454
1455 if (sdata->vif.bss_conf.ps != ps_allowed) {
1456 sdata->vif.bss_conf.ps = ps_allowed;
1457 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1458 }
1459}
1460
965bedad
JB		 1461void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1462{
1463 struct ieee80211_local *local =
1464 container_of(work, struct ieee80211_local,
1465 dynamic_ps_disable_work);
1466
1467 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1468 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1469 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1470 }
1471
1472 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1473 IEEE80211_MAX_QUEUE_MAP,
965bedad
JB		 1474 IEEE80211_QUEUE_STOP_REASON_PS);
1475}
1476
1477void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1478{
1479 struct ieee80211_local *local =
1480 container_of(work, struct ieee80211_local,
1481 dynamic_ps_enable_work);
1482 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1483 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1484 unsigned long flags;
1485 int q;
965bedad
JB		 1486
1487 /* can only happen when PS was just disabled anyway */
1488 if (!sdata)
1489 return;
1490
5e34069c
CL		 1491 ifmgd = &sdata->u.mgd;
1492
965bedad
JB		 1493 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1494 return;
1495
09b85568 1496 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1497 /* don't enter PS if TX frames are pending */
1498 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1499 mod_timer(&local->dynamic_ps_timer, jiffies +
1500 msecs_to_jiffies(
1501 local->hw.conf.dynamic_ps_timeout));
1502 return;
1503 }
77b7023a
AN		 1504
1505 /*
1506 * transmission can be stopped by others which leads to
1507 * dynamic_ps_timer expiry. Postpone the ps timer if it
1508 * is not the actual idle state.
1509 */
1510 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1511 for (q = 0; q < local->hw.queues; q++) {
1512 if (local->queue_stop_reasons[q]) {
1513 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1514 flags);
1515 mod_timer(&local->dynamic_ps_timer, jiffies +
1516 msecs_to_jiffies(
1517 local->hw.conf.dynamic_ps_timeout));
1518 return;
1519 }
1520 }
1521 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1522 }
1ddc2867 1523
375177bf 1524 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1525 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1526 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1527 mod_timer(&local->dynamic_ps_timer, jiffies +
1528 msecs_to_jiffies(
1529 local->hw.conf.dynamic_ps_timeout));
a1598383 1530 } else {
e8306f98
VN		 1531 ieee80211_send_nullfunc(local, sdata, 1);
1532 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1533 ieee80211_flush_queues(local, sdata);
e8306f98 1534 }
f3e85b9e
VN		 1535 }
1536
2a13052f
JO		 1537 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1538 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1539 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1540 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1541 local->hw.conf.flags |= IEEE80211_CONF_PS;
1542 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1543 }
965bedad
JB		 1544}
1545
1546void ieee80211_dynamic_ps_timer(unsigned long data)
1547{
1548 struct ieee80211_local *local = (void *) data;
1549
78f1a8b7 1550 if (local->quiescing || local->suspended)
5bb644a0
JB		 1551 return;
1552
42935eca 1553 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1554}
1555
164eb02d
SW		 1556void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1557{
1558 struct delayed_work *delayed_work =
1559 container_of(work, struct delayed_work, work);
1560 struct ieee80211_sub_if_data *sdata =
1561 container_of(delayed_work, struct ieee80211_sub_if_data,
1562 dfs_cac_timer_work);
1563
1564 ieee80211_vif_release_channel(sdata);
1565
1566 cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
1567}
1568
60f8b39c 1569/* MLME */
7d25745d 1570static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1571 struct ieee80211_sub_if_data *sdata,
4a3cb702 1572 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1573{
f0706e82 1574 struct ieee80211_tx_queue_params params;
4ced3f74 1575 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1576 size_t left;
1577 int count;
4a3cb702
JB		 1578 const u8 *pos;
1579 u8 uapsd_queues = 0;
f0706e82 1580
e1b3ec1a 1581 if (!local->ops->conf_tx)
7d25745d 1582 return false;
e1b3ec1a 1583
32c5057b 1584 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1585 return false;
3434fbd3
JB		 1586
1587 if (!wmm_param)
7d25745d 1588 return false;
3434fbd3 1589
f0706e82 1590 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1591 return false;
ab13315a
KV		 1592
1593 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1594 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1595
f0706e82 1596 count = wmm_param[6] & 0x0f;
46900298 1597 if (count == ifmgd->wmm_last_param_set)
7d25745d 1598 return false;
46900298 1599 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1600
1601 pos = wmm_param + 8;
1602 left = wmm_param_len - 8;
1603
1604 memset(&params, 0, sizeof(params));
1605
00e96dec 1606 sdata->wmm_acm = 0;
f0706e82
JB		 1607 for (; left >= 4; left -= 4, pos += 4) {
1608 int aci = (pos[0] >> 5) & 0x03;
1609 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1610 bool uapsd = false;
f0706e82
JB		 1611 int queue;
1612
1613 switch (aci) {
0eeb59fe 1614 case 1: /* AC_BK */
e100bb64 1615 queue = 3;
988c0f72 1616 if (acm)
00e96dec 1617 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1618 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1619 uapsd = true;
f0706e82 1620 break;
0eeb59fe 1621 case 2: /* AC_VI */
e100bb64 1622 queue = 1;
988c0f72 1623 if (acm)
00e96dec 1624 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1625 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1626 uapsd = true;
f0706e82 1627 break;
0eeb59fe 1628 case 3: /* AC_VO */
e100bb64 1629 queue = 0;
988c0f72 1630 if (acm)
00e96dec 1631 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1632 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1633 uapsd = true;
f0706e82 1634 break;
0eeb59fe 1635 case 0: /* AC_BE */
f0706e82 1636 default:
e100bb64 1637 queue = 2;
988c0f72 1638 if (acm)
00e96dec 1639 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1640 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1641 uapsd = true;
f0706e82
JB		 1642 break;
1643 }
1644
1645 params.aifs = pos[0] & 0x0f;
1646 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1647 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1648 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1649 params.acm = acm;
ab13315a
KV		 1650 params.uapsd = uapsd;
1651
bdcbd8e0
JB		 1652 mlme_dbg(sdata,
1653 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1654 queue, aci, acm,
1655 params.aifs, params.cw_min, params.cw_max,
1656 params.txop, params.uapsd);
f6f3def3
EP		 1657 sdata->tx_conf[queue] = params;
1658 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1659 sdata_err(sdata,
1660 "failed to set TX queue parameters for queue %d\n",
1661 queue);
f0706e82 1662 }
e1b3ec1a
SG		 1663
1664 /* enable WMM or activate new settings */
4ced3f74 1665 sdata->vif.bss_conf.qos = true;
7d25745d 1666 return true;
f0706e82
JB		 1667}
1668
925e64c3
SG		 1669static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1670{
1671 lockdep_assert_held(&sdata->local->mtx);
1672
1673 sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
1674 IEEE80211_STA_BEACON_POLL);
1675 ieee80211_run_deferred_scan(sdata->local);
1676}
1677
1678static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1679{
1680 mutex_lock(&sdata->local->mtx);
1681 __ieee80211_stop_poll(sdata);
1682 mutex_unlock(&sdata->local->mtx);
1683}
1684
7a5158ef
JB		 1685static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1686 u16 capab, bool erp_valid, u8 erp)
5628221c 1687{
bda3933a 1688 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1689 u32 changed = 0;
7a5158ef
JB		 1690 bool use_protection;
1691 bool use_short_preamble;
1692 bool use_short_slot;
1693
1694 if (erp_valid) {
1695 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1696 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1697 } else {
1698 use_protection = false;
1699 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1700 }
1701
1702 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1703 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1704 use_short_slot = true;
5628221c 1705
471b3efd 1706 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1707 bss_conf->use_cts_prot = use_protection;
1708 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1709 }
7e9ed188 1710
d43c7b37 1711 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1712 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1713 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1714 }
d9430a32 1715
7a5158ef 1716 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1717 bss_conf->use_short_slot = use_short_slot;
1718 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1719 }
1720
1721 return changed;
1722}
1723
f698d856 1724static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1725 struct cfg80211_bss *cbss,
ae5eb026 1726 u32 bss_info_changed)
f0706e82 1727{
0c1ad2ca 1728 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1729 struct ieee80211_local *local = sdata->local;
68542962 1730 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1731
ae5eb026 1732 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1733 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1734 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1735
7ccc8bd7 1736 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1737 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1738
0c1ad2ca
JB		 1739 sdata->u.mgd.associated = cbss;
1740 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1741
17e4ec14
JM		 1742 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1743
488dd7b5 1744 if (sdata->vif.p2p) {
9caf0364 1745 const struct cfg80211_bss_ies *ies;
488dd7b5 1746
9caf0364
JB		 1747 rcu_read_lock();
1748 ies = rcu_dereference(cbss->ies);
1749 if (ies) {
9caf0364
JB		 1750 int ret;
1751
1752 ret = cfg80211_get_p2p_attr(
1753 ies->data, ies->len,
1754 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1755 (u8 *) &bss_conf->p2p_noa_attr,
1756 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1757 if (ret >= 2) {
67baf663
JD		 1758 sdata->u.mgd.p2p_noa_index =
1759 bss_conf->p2p_noa_attr.index;
9caf0364 1760 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1761 }
488dd7b5 1762 }
9caf0364 1763 rcu_read_unlock();
488dd7b5
JB		 1764 }
1765
b291ba11 1766 /* just to be sure */
925e64c3 1767 ieee80211_stop_poll(sdata);
b291ba11 1768
9ac19a90 1769 ieee80211_led_assoc(local, 1);
9306102e 1770
989c6505 1771 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1772 /*
1773 * If the AP is buggy we may get here with no DTIM period
1774 * known, so assume it's 1 which is the only safe assumption
1775 * in that case, although if the TIM IE is broken powersave
1776 * probably just won't work at all.
1777 */
1778 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1779 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1780 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1781 } else {
817cee76 1782 bss_conf->beacon_rate = NULL;
e5b900d2 1783 bss_conf->dtim_period = 0;
826262c3 1784 }
e5b900d2 1785
68542962 1786 bss_conf->assoc = 1;
9cef8737 1787
a97c13c3 1788 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1789 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1790 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1791 bss_info_changed |= BSS_CHANGED_CQM;
1792
68542962 1793 /* Enable ARP filtering */
0f19b41e 1794 if (bss_conf->arp_addr_cnt)
68542962 1795 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1796
ae5eb026 1797 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1798
056508dc
JB		 1799 mutex_lock(&local->iflist_mtx);
1800 ieee80211_recalc_ps(local, -1);
1801 mutex_unlock(&local->iflist_mtx);
e0cb686f 1802
04ecd257 1803 ieee80211_recalc_smps(sdata);
ab095877
EP		 1804 ieee80211_recalc_ps_vif(sdata);
1805
9ac19a90 1806 netif_carrier_on(sdata->dev);
f0706e82
JB		 1807}
1808
e69e95db 1809static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1810 u16 stype, u16 reason, bool tx,
1811 u8 *frame_buf)
aa458d17 1812{
46900298 1813 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1814 struct ieee80211_local *local = sdata->local;
3cc5240b 1815 u32 changed = 0;
aa458d17 1816
8d61ffa5 1817 sdata_assert_lock(sdata);
77fdaa12 1818
37ad3888
JB		 1819 if (WARN_ON_ONCE(tx && !frame_buf))
1820 return;
1821
b291ba11
JB		 1822 if (WARN_ON(!ifmgd->associated))
1823 return;
1824
79543d8e
DS		 1825 ieee80211_stop_poll(sdata);
1826
77fdaa12 1827 ifmgd->associated = NULL;
aa458d17
TW		 1828 netif_carrier_off(sdata->dev);
1829
88bc40e8
EP		 1830 /*
1831 * if we want to get out of ps before disassoc (why?) we have
1832 * to do it before sending disassoc, as otherwise the null-packet
1833 * won't be valid.
1834 */
1835 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1836 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1837 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1838 }
1839 local->ps_sdata = NULL;
1840
ab095877
EP		 1841 /* disable per-vif ps */
1842 ieee80211_recalc_ps_vif(sdata);
1843
f823981e
EP		 1844 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1845 if (tx)
39ecc01d 1846 ieee80211_flush_queues(local, sdata);
f823981e 1847
37ad3888
JB		 1848 /* deauthenticate/disassociate now */
1849 if (tx || frame_buf)
88a9e31c
EP		 1850 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1851 reason, tx, frame_buf);
37ad3888
JB		 1852
1853 /* flush out frame */
1854 if (tx)
39ecc01d 1855 ieee80211_flush_queues(local, sdata);
37ad3888 1856
88a9e31c
EP		 1857 /* clear bssid only after building the needed mgmt frames */
1858 memset(ifmgd->bssid, 0, ETH_ALEN);
1859
37ad3888 1860 /* remove AP and TDLS peers */
051007d9 1861 sta_info_flush_defer(sdata);
37ad3888
JB		 1862
1863 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1864 changed |= ieee80211_reset_erp_info(sdata);
1865
f5e5bf25 1866 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1867 changed |= BSS_CHANGED_ASSOC;
1868 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1869
67baf663
JD		 1870 ifmgd->p2p_noa_index = -1;
1871 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1872 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 1873
dd5ecfea 1874 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 1875 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1876 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 1877 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
1878 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 1879
1ea6f9c0 1880 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1881
520eb820
KV		 1882 del_timer_sync(&local->dynamic_ps_timer);
1883 cancel_work_sync(&local->dynamic_ps_enable_work);
1884
68542962 1885 /* Disable ARP filtering */
0f19b41e 1886 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 1887 changed |= BSS_CHANGED_ARP_FILTER;
68542962 1888
3abead59
JB		 1889 sdata->vif.bss_conf.qos = false;
1890 changed |= BSS_CHANGED_QOS;
1891
0aaffa9b
JB		 1892 /* The BSSID (not really interesting) and HT changed */
1893 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1894 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1895
3abead59
JB		 1896 /* disassociated - set to defaults now */
1897 ieee80211_set_wmm_default(sdata, false);
1898
b9dcf712
JB		 1899 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1900 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1901 del_timer_sync(&sdata->u.mgd.timer);
1902 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 1903
826262c3 1904 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 1905 sdata->vif.bss_conf.beacon_rate = NULL;
1906
989c6505 1907 ifmgd->have_beacon = false;
826262c3 1908
028e8da0
JB		 1909 ifmgd->flags = 0;
1910 ieee80211_vif_release_channel(sdata);
aa458d17 1911}
f0706e82 1912
3cf335d5
KV		 1913void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1914 struct ieee80211_hdr *hdr)
1915{
1916 /*
1917 * We can postpone the mgd.timer whenever receiving unicast frames
1918 * from AP because we know that the connection is working both ways
1919 * at that time. But multicast frames (and hence also beacons) must
1920 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1921 * data idle periods for sending the periodic probe request to the
1922 * AP we're connected to.
3cf335d5 1923 */
b291ba11
JB		 1924 if (is_multicast_ether_addr(hdr->addr1))
1925 return;
1926
be099e82 1927 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1928}
f0706e82 1929
4e5ff376
FF		 1930static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1931{
1932 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1933 struct ieee80211_local *local = sdata->local;
4e5ff376 1934
133d40f9 1935 mutex_lock(&local->mtx);
4e5ff376 1936 if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
133d40f9
SG		 1937 IEEE80211_STA_CONNECTION_POLL))) {
1938 mutex_unlock(&local->mtx);
1939 return;
1940 }
4e5ff376 1941
925e64c3 1942 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1943
1944 mutex_lock(&local->iflist_mtx);
1945 ieee80211_recalc_ps(local, -1);
1946 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1947
1948 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1949 goto out;
4e5ff376
FF		 1950
1951 /*
1952 * We've received a probe response, but are not sure whether
1953 * we have or will be receiving any beacons or data, so let's
1954 * schedule the timers again, just in case.
1955 */
1956 ieee80211_sta_reset_beacon_monitor(sdata);
1957
1958 mod_timer(&ifmgd->conn_mon_timer,
1959 round_jiffies_up(jiffies +
1960 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1961out:
133d40f9 1962 mutex_unlock(&local->mtx);
4e5ff376
FF		 1963}
1964
1965void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1966 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1967{
75706d0e 1968 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1969 return;
1970
4e5ff376
FF		 1971 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1972 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 1973 if (ack)
cab1c7fd 1974 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 1975 else
1976 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 1977 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 1978 return;
4e5ff376 1979 }
cab1c7fd
WD		 1980
1981 if (ack)
1982 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1983}
1984
a43abf29
ML		 1985static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1986{
1987 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1988 const u8 *ssid;
f01a067d 1989 u8 *dst = ifmgd->associated->bssid;
180205bd 1990 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1991
1992 /*
1993 * Try sending broadcast probe requests for the last three
1994 * probe requests after the first ones failed since some
1995 * buggy APs only support broadcast probe requests.
1996 */
1997 if (ifmgd->probe_send_count >= unicast_limit)
1998 dst = NULL;
a43abf29 1999
4e5ff376
FF		 2000 /*
2001 * When the hardware reports an accurate Tx ACK status, it's
2002 * better to send a nullfunc frame instead of a probe request,
2003 * as it will kick us off the AP quickly if we aren't associated
2004 * anymore. The timeout will be reset if the frame is ACKed by
2005 * the AP.
2006 */
992e68bf
SD		 2007 ifmgd->probe_send_count++;
2008
04ac3c0e
FF		 2009 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
2010 ifmgd->nullfunc_failed = false;
4e5ff376 2011 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 2012 } else {
88c868c4
SG		 2013 int ssid_len;
2014
9caf0364 2015 rcu_read_lock();
4e5ff376 2016 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2017 if (WARN_ON_ONCE(ssid == NULL))
2018 ssid_len = 0;
2019 else
2020 ssid_len = ssid[1];
2021
2022 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
1672c0e3 2023 0, (u32) -1, true, 0,
55de908a 2024 ifmgd->associated->channel, false);
9caf0364 2025 rcu_read_unlock();
4e5ff376 2026 }
a43abf29 2027
180205bd 2028 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2029 run_again(sdata, ifmgd->probe_timeout);
f69b9c79 2030 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
39ecc01d 2031 ieee80211_flush_queues(sdata->local, sdata);
a43abf29
ML		 2032}
2033
b291ba11
JB		 2034static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2035 bool beacon)
04de8381 2036{
04de8381 2037 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2038 bool already = false;
34bfc411 2039
9607e6b6 2040 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2041 return;
2042
8d61ffa5 2043 sdata_lock(sdata);
77fdaa12
JB		 2044
2045 if (!ifmgd->associated)
2046 goto out;
2047
133d40f9
SG		 2048 mutex_lock(&sdata->local->mtx);
2049
2050 if (sdata->local->tmp_channel || sdata->local->scanning) {
2051 mutex_unlock(&sdata->local->mtx);
2052 goto out;
2053 }
2054
a13fbe54 2055 if (beacon) {
bdcbd8e0 2056 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2057 "detected beacon loss from AP (missed %d beacons) - probing\n",
2058 beacon_loss_count);
bdcbd8e0 2059
a13fbe54
BG		 2060 ieee80211_cqm_rssi_notify(&sdata->vif,
2061 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
2062 GFP_KERNEL);
2063 }
04de8381 2064
b291ba11
JB		 2065 /*
2066 * The driver/our work has already reported this event or the
2067 * connection monitoring has kicked in and we have already sent
2068 * a probe request. Or maybe the AP died and the driver keeps
2069 * reporting until we disassociate...
2070 *
2071 * In either case we have to ignore the current call to this
2072 * function (except for setting the correct probe reason bit)
2073 * because otherwise we would reset the timer every time and
2074 * never check whether we received a probe response!
2075 */
2076 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
2077 IEEE80211_STA_CONNECTION_POLL))
2078 already = true;
2079
2080 if (beacon)
2081 ifmgd->flags |= IEEE80211_STA_BEACON_POLL;
2082 else
2083 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2084
133d40f9
SG		 2085 mutex_unlock(&sdata->local->mtx);
2086
b291ba11
JB		 2087 if (already)
2088 goto out;
2089
4e751843
JB		 2090 mutex_lock(&sdata->local->iflist_mtx);
2091 ieee80211_recalc_ps(sdata->local, -1);
2092 mutex_unlock(&sdata->local->iflist_mtx);
2093
a43abf29
ML		 2094 ifmgd->probe_send_count = 0;
2095 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2096 out:
8d61ffa5 2097 sdata_unlock(sdata);
04de8381
KV		 2098}
2099
a619a4c0
JO		 2100struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2101 struct ieee80211_vif *vif)
2102{
2103 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2104 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2105 struct cfg80211_bss *cbss;
a619a4c0
JO		 2106 struct sk_buff *skb;
2107 const u8 *ssid;
88c868c4 2108 int ssid_len;
a619a4c0
JO		 2109
2110 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2111 return NULL;
2112
8d61ffa5 2113 sdata_assert_lock(sdata);
a619a4c0 2114
d9b3b28b
EP		 2115 if (ifmgd->associated)
2116 cbss = ifmgd->associated;
2117 else if (ifmgd->auth_data)
2118 cbss = ifmgd->auth_data->bss;
2119 else if (ifmgd->assoc_data)
2120 cbss = ifmgd->assoc_data->bss;
2121 else
a619a4c0
JO		 2122 return NULL;
2123
9caf0364 2124 rcu_read_lock();
d9b3b28b 2125 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2126 if (WARN_ON_ONCE(ssid == NULL))
2127 ssid_len = 0;
2128 else
2129 ssid_len = ssid[1];
2130
d9b3b28b 2131 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 2132 (u32) -1, cbss->channel,
6b77863b 2133 ssid + 2, ssid_len,
85a237fe 2134 NULL, 0, true);
9caf0364 2135 rcu_read_unlock();
a619a4c0
JO		 2136
2137 return skb;
2138}
2139EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2140
eef9e54c 2141static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01
JO		 2142{
2143 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2144 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2145
8d61ffa5 2146 sdata_lock(sdata);
1e4dcd01 2147 if (!ifmgd->associated) {
8d61ffa5 2148 sdata_unlock(sdata);
1e4dcd01
JO		 2149 return;
2150 }
2151
37ad3888
JB		 2152 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2153 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2154 true, frame_buf);
882a7c69 2155 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
5b36ebd8 2156 ieee80211_wake_queues_by_reason(&sdata->local->hw,
445ea4e8 2157 IEEE80211_MAX_QUEUE_MAP,
5b36ebd8 2158 IEEE80211_QUEUE_STOP_REASON_CSA);
7da7cc1d 2159
6ff57cf8
JB		 2160 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2161 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2162 sdata_unlock(sdata);
1e4dcd01
JO		 2163}
2164
cc74c0c7 2165static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2166{
2167 struct ieee80211_sub_if_data *sdata =
2168 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2169 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2170 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2171 struct sta_info *sta;
2172
2173 if (ifmgd->associated) {
30fa9047 2174 rcu_read_lock();
a85e1d55
PS		 2175 sta = sta_info_get(sdata, ifmgd->bssid);
2176 if (sta)
2177 sta->beacon_loss_count++;
30fa9047 2178 rcu_read_unlock();
a85e1d55 2179 }
b291ba11 2180
682bd38b 2181 if (ifmgd->connection_loss) {
882a7c69
JB		 2182 sdata_info(sdata, "Connection to AP %pM lost\n",
2183 ifmgd->bssid);
eef9e54c 2184 __ieee80211_disconnect(sdata);
882a7c69 2185 } else {
1e4dcd01 2186 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2187 }
2188}
2189
2190static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2191{
2192 struct ieee80211_sub_if_data *sdata =
2193 container_of(work, struct ieee80211_sub_if_data,
2194 u.mgd.csa_connection_drop_work);
2195
eef9e54c 2196 __ieee80211_disconnect(sdata);
b291ba11
JB		 2197}
2198
04de8381
KV		 2199void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2200{
2201 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2202 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2203
b5878a2d
JB		 2204 trace_api_beacon_loss(sdata);
2205
682bd38b 2206 sdata->u.mgd.connection_loss = false;
1e4dcd01 2207 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2208}
2209EXPORT_SYMBOL(ieee80211_beacon_loss);
2210
1e4dcd01
JO		 2211void ieee80211_connection_loss(struct ieee80211_vif *vif)
2212{
2213 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2214 struct ieee80211_hw *hw = &sdata->local->hw;
2215
b5878a2d
JB		 2216 trace_api_connection_loss(sdata);
2217
682bd38b 2218 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2219 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2220}
2221EXPORT_SYMBOL(ieee80211_connection_loss);
2222
2223
66e67e41
JB		 2224static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2225 bool assoc)
2226{
2227 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2228
8d61ffa5 2229 sdata_assert_lock(sdata);
66e67e41 2230
66e67e41
JB		 2231 if (!assoc) {
2232 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2233
2234 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2235 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2236 sdata->u.mgd.flags = 0;
55de908a 2237 ieee80211_vif_release_channel(sdata);
66e67e41
JB		 2238 }
2239
5b112d3d 2240 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2241 kfree(auth_data);
2242 sdata->u.mgd.auth_data = NULL;
2243}
2244
2245static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2246 struct ieee80211_mgmt *mgmt, size_t len)
2247{
1672c0e3 2248 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2249 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2250 u8 *pos;
2251 struct ieee802_11_elems elems;
1672c0e3 2252 u32 tx_flags = 0;
66e67e41
JB		 2253
2254 pos = mgmt->u.auth.variable;
b2e506bf 2255 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2256 if (!elems.challenge)
2257 return;
2258 auth_data->expected_transaction = 4;
a1845fc7 2259 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2260 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2261 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2262 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2263 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2264 elems.challenge - 2, elems.challenge_len + 2,
2265 auth_data->bss->bssid, auth_data->bss->bssid,
2266 auth_data->key, auth_data->key_len,
1672c0e3 2267 auth_data->key_idx, tx_flags);
66e67e41
JB		 2268}
2269
8d61ffa5
JB		 2270static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2271 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2272{
2273 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2274 u8 bssid[ETH_ALEN];
2275 u16 auth_alg, auth_transaction, status_code;
2276 struct sta_info *sta;
2277
8d61ffa5 2278 sdata_assert_lock(sdata);
66e67e41
JB		 2279
2280 if (len < 24 + 6)
8d61ffa5 2281 return;
66e67e41
JB		 2282
2283 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2284 return;
66e67e41
JB		 2285
2286 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2287
b203ca39 2288 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2289 return;
66e67e41
JB		 2290
2291 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2292 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2293 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2294
2295 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2296 auth_transaction != ifmgd->auth_data->expected_transaction) {
2297 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2298 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2299 auth_transaction,
2300 ifmgd->auth_data->expected_transaction);
8d61ffa5 2301 return;
0f4126e8 2302 }
66e67e41
JB		 2303
2304 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2305 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2306 mgmt->sa, status_code);
dac211ec 2307 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2308 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2309 return;
66e67e41
JB		 2310 }
2311
2312 switch (ifmgd->auth_data->algorithm) {
2313 case WLAN_AUTH_OPEN:
2314 case WLAN_AUTH_LEAP:
2315 case WLAN_AUTH_FT:
6b8ece3a 2316 case WLAN_AUTH_SAE:
66e67e41
JB		 2317 break;
2318 case WLAN_AUTH_SHARED_KEY:
2319 if (ifmgd->auth_data->expected_transaction != 4) {
2320 ieee80211_auth_challenge(sdata, mgmt, len);
2321 /* need another frame */
8d61ffa5 2322 return;
66e67e41
JB		 2323 }
2324 break;
2325 default:
2326 WARN_ONCE(1, "invalid auth alg %d",
2327 ifmgd->auth_data->algorithm);
8d61ffa5 2328 return;
66e67e41
JB		 2329 }
2330
bdcbd8e0 2331 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2332 ifmgd->auth_data->done = true;
2333 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2334 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2335 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2336
6b8ece3a
JM		 2337 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2338 ifmgd->auth_data->expected_transaction != 2) {
2339 /*
2340 * Report auth frame to user space for processing since another
2341 * round of Authentication frames is still needed.
2342 */
6ff57cf8 2343 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2344 return;
6b8ece3a
JM		 2345 }
2346
66e67e41
JB		 2347 /* move station state to auth */
2348 mutex_lock(&sdata->local->sta_mtx);
2349 sta = sta_info_get(sdata, bssid);
2350 if (!sta) {
2351 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2352 goto out_err;
2353 }
2354 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2355 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2356 goto out_err;
2357 }
2358 mutex_unlock(&sdata->local->sta_mtx);
2359
6ff57cf8 2360 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2361 return;
66e67e41
JB		 2362 out_err:
2363 mutex_unlock(&sdata->local->sta_mtx);
2364 /* ignore frame -- wait for timeout */
66e67e41
JB		 2365}
2366
2367
8d61ffa5
JB		 2368static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2369 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2370{
46900298 2371 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2372 const u8 *bssid = NULL;
f0706e82
JB		 2373 u16 reason_code;
2374
8d61ffa5 2375 sdata_assert_lock(sdata);
66e67e41 2376
f4ea83dd 2377 if (len < 24 + 2)
8d61ffa5 2378 return;
f0706e82 2379
66e67e41 2380 if (!ifmgd->associated ||
b203ca39 2381 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2382 return;
77fdaa12 2383
0c1ad2ca 2384 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2385
2386 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2387
bdcbd8e0
JB		 2388 sdata_info(sdata, "deauthenticated from %pM (Reason: %u)\n",
2389 bssid, reason_code);
77fdaa12 2390
37ad3888
JB		 2391 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2392
6ff57cf8 2393 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2394}
2395
2396
8d61ffa5
JB		 2397static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2398 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2399{
46900298 2400 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2401 u16 reason_code;
2402
8d61ffa5 2403 sdata_assert_lock(sdata);
77fdaa12 2404
66e67e41 2405 if (len < 24 + 2)
8d61ffa5 2406 return;
77fdaa12 2407
66e67e41 2408 if (!ifmgd->associated ||
b203ca39 2409 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2410 return;
f0706e82
JB		 2411
2412 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2413
bdcbd8e0
JB		 2414 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2415 mgmt->sa, reason_code);
f0706e82 2416
37ad3888
JB		 2417 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2418
6ff57cf8 2419 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2420}
2421
c74d084f
CL		 2422static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2423 u8 *supp_rates, unsigned int supp_rates_len,
2424 u32 *rates, u32 *basic_rates,
2425 bool *have_higher_than_11mbit,
2103dec1
SW		 2426 int *min_rate, int *min_rate_index,
2427 int shift, u32 rate_flags)
c74d084f
CL		 2428{
2429 int i, j;
2430
2431 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2432 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2433 bool is_basic = !!(supp_rates[i] & 0x80);
2434
2103dec1 2435 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2436 *have_higher_than_11mbit = true;
2437
2438 /*
2439 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2440 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2441 *
2442 * Note: Even through the membership selector and the basic
2443 * rate flag share the same bit, they are not exactly
2444 * the same.
2445 */
2446 if (!!(supp_rates[i] & 0x80) &&
2447 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2448 continue;
2449
2450 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2451 struct ieee80211_rate *br;
2452 int brate;
2453
2454 br = &sband->bitrates[j];
2455 if ((rate_flags & br->flags) != rate_flags)
2456 continue;
2457
2458 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2459 if (brate == rate) {
c74d084f
CL		 2460 *rates |= BIT(j);
2461 if (is_basic)
2462 *basic_rates |= BIT(j);
2103dec1
SW		 2463 if ((rate * 5) < *min_rate) {
2464 *min_rate = rate * 5;
c74d084f
CL		 2465 *min_rate_index = j;
2466 }
2467 break;
2468 }
2469 }
2470 }
2471}
f0706e82 2472
66e67e41
JB		 2473static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2474 bool assoc)
2475{
2476 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2477
8d61ffa5 2478 sdata_assert_lock(sdata);
66e67e41 2479
66e67e41
JB		 2480 if (!assoc) {
2481 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2482
2483 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2484 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2485 sdata->u.mgd.flags = 0;
55de908a 2486 ieee80211_vif_release_channel(sdata);
66e67e41
JB		 2487 }
2488
2489 kfree(assoc_data);
2490 sdata->u.mgd.assoc_data = NULL;
2491}
2492
2493static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2494 struct cfg80211_bss *cbss,
af6b6374 2495 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2496{
46900298 2497 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2498 struct ieee80211_local *local = sdata->local;
8318d78a 2499 struct ieee80211_supported_band *sband;
f0706e82 2500 struct sta_info *sta;
af6b6374 2501 u8 *pos;
af6b6374 2502 u16 capab_info, aid;
f0706e82 2503 struct ieee802_11_elems elems;
bda3933a 2504 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2505 const struct cfg80211_bss_ies *bss_ies = NULL;
2506 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2507 u32 changed = 0;
c74d084f 2508 int err;
35d865af 2509 bool ret;
f0706e82 2510
af6b6374 2511 /* AssocResp and ReassocResp have identical structure */
f0706e82 2512
f0706e82 2513 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2514 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2515
1dd84aa2 2516 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2517 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2518 aid);
1dd84aa2
JB		 2519 aid &= ~(BIT(15) | BIT(14));
2520
05cb9108
JB		 2521 ifmgd->broken_ap = false;
2522
2523 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2524 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2525 aid);
05cb9108
JB		 2526 aid = 0;
2527 ifmgd->broken_ap = true;
2528 }
2529
af6b6374 2530 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2531 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2532
f0706e82 2533 if (!elems.supp_rates) {
bdcbd8e0 2534 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2535 return false;
f0706e82
JB		 2536 }
2537
46900298 2538 ifmgd->aid = aid;
f0706e82 2539
35d865af
JB		 2540 /*
2541 * Some APs are erroneously not including some information in their
2542 * (re)association response frames. Try to recover by using the data
2543 * from the beacon or probe response. This seems to afflict mobile
2544 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2545 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2546 */
2547 if ((assoc_data->wmm && !elems.wmm_param) ||
2548 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2549 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2550 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2551 (!elems.vht_cap_elem || !elems.vht_operation))) {
2552 const struct cfg80211_bss_ies *ies;
2553 struct ieee802_11_elems bss_elems;
2554
2555 rcu_read_lock();
2556 ies = rcu_dereference(cbss->ies);
2557 if (ies)
2558 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2559 GFP_ATOMIC);
2560 rcu_read_unlock();
2561 if (!bss_ies)
2562 return false;
2563
2564 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2565 false, &bss_elems);
2566 if (assoc_data->wmm &&
2567 !elems.wmm_param && bss_elems.wmm_param) {
2568 elems.wmm_param = bss_elems.wmm_param;
2569 sdata_info(sdata,
2570 "AP bug: WMM param missing from AssocResp\n");
2571 }
2572
2573 /*
2574 * Also check if we requested HT/VHT, otherwise the AP doesn't
2575 * have to include the IEs in the (re)association response.
2576 */
2577 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2578 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2579 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2580 sdata_info(sdata,
2581 "AP bug: HT capability missing from AssocResp\n");
2582 }
2583 if (!elems.ht_operation && bss_elems.ht_operation &&
2584 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2585 elems.ht_operation = bss_elems.ht_operation;
2586 sdata_info(sdata,
2587 "AP bug: HT operation missing from AssocResp\n");
2588 }
2589 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2590 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2591 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2592 sdata_info(sdata,
2593 "AP bug: VHT capa missing from AssocResp\n");
2594 }
2595 if (!elems.vht_operation && bss_elems.vht_operation &&
2596 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2597 elems.vht_operation = bss_elems.vht_operation;
2598 sdata_info(sdata,
2599 "AP bug: VHT operation missing from AssocResp\n");
2600 }
2601 }
2602
30eb1dc2
JB		 2603 /*
2604 * We previously checked these in the beacon/probe response, so
2605 * they should be present here. This is just a safety net.
2606 */
2607 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2608 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2609 sdata_info(sdata,
35d865af
JB		 2610 "HT AP is missing WMM params or HT capability/operation\n");
2611 ret = false;
2612 goto out;
30eb1dc2
JB		 2613 }
2614
2615 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2616 (!elems.vht_cap_elem || !elems.vht_operation)) {
2617 sdata_info(sdata,
35d865af
JB		 2618 "VHT AP is missing VHT capability/operation\n");
2619 ret = false;
2620 goto out;
30eb1dc2
JB		 2621 }
2622
2a33bee2
GE		 2623 mutex_lock(&sdata->local->sta_mtx);
2624 /*
2625 * station info was already allocated and inserted before
2626 * the association and should be available to us
2627 */
7852e361 2628 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2629 if (WARN_ON(!sta)) {
2630 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2631 ret = false;
2632 goto out;
77fdaa12 2633 }
05e5e883 2634
55de908a 2635 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2636
30eb1dc2 2637 /* Set up internal HT/VHT capabilities */
a8243b72 2638 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2639 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2640 elems.ht_cap_elem, sta);
64f68e5d 2641
818255ea
MP		 2642 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2643 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2644 elems.vht_cap_elem, sta);
818255ea 2645
30eb1dc2
JB		 2646 /*
2647 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2648 * in their association response, so ignore that data for our own
2649 * configuration. If it changed since the last beacon, we'll get the
2650 * next beacon and update then.
2651 */
1128958d 2652
bee7f586
JB		 2653 /*
2654 * If an operating mode notification IE is present, override the
2655 * NSS calculation (that would be done in rate_control_rate_init())
2656 * and use the # of streams from that element.
2657 */
2658 if (elems.opmode_notif &&
2659 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2660 u8 nss;
2661
2662 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2663 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2664 nss += 1;
2665 sta->sta.rx_nss = nss;
2666 }
2667
4b7679a5 2668 rate_control_rate_init(sta);
f0706e82 2669
46900298 2670 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2671 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2672
ddf4ac53 2673 if (elems.wmm_param)
c2c98fde 2674 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2675
3e4d40fa 2676 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2677 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2678 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2679 if (err) {
bdcbd8e0
JB		 2680 sdata_info(sdata,
2681 "failed to move station %pM to desired state\n",
2682 sta->sta.addr);
c8987876
JB		 2683 WARN_ON(__sta_info_destroy(sta));
2684 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2685 ret = false;
2686 goto out;
c8987876
JB		 2687 }
2688
7852e361 2689 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2690
f2176d72
JO		 2691 /*
2692 * Always handle WMM once after association regardless
2693 * of the first value the AP uses. Setting -1 here has
2694 * that effect because the AP values is an unsigned
2695 * 4-bit value.
2696 */
2697 ifmgd->wmm_last_param_set = -1;
2698
ddf4ac53 2699 if (elems.wmm_param)
4ced3f74 2700 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2701 elems.wmm_param_len);
aa837e1d 2702 else
3abead59
JB		 2703 ieee80211_set_wmm_default(sdata, false);
2704 changed |= BSS_CHANGED_QOS;
f0706e82 2705
60f8b39c
JB		 2706 /* set AID and assoc capability,
2707 * ieee80211_set_associated() will tell the driver */
2708 bss_conf->aid = aid;
2709 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2710 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2711
d524215f
FF		 2712 /*
2713 * If we're using 4-addr mode, let the AP know that we're
2714 * doing so, so that it can create the STA VLAN on its side
2715 */
2716 if (ifmgd->use_4addr)
2717 ieee80211_send_4addr_nullfunc(local, sdata);
2718
15b7b062 2719 /*
b291ba11
JB		 2720 * Start timer to probe the connection to the AP now.
2721 * Also start the timer that will detect beacon loss.
15b7b062 2722 */
b291ba11 2723 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2724 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2725
35d865af
JB		 2726 ret = true;
2727 out:
2728 kfree(bss_ies);
2729 return ret;
f0706e82
JB		 2730}
2731
8d61ffa5
JB		 2732static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2733 struct ieee80211_mgmt *mgmt,
2734 size_t len)
66e67e41
JB		 2735{
2736 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2737 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2738 u16 capab_info, status_code, aid;
2739 struct ieee802_11_elems elems;
2740 u8 *pos;
2741 bool reassoc;
8d61ffa5 2742 struct cfg80211_bss *bss;
66e67e41 2743
8d61ffa5 2744 sdata_assert_lock(sdata);
66e67e41
JB		 2745
2746 if (!assoc_data)
8d61ffa5 2747 return;
b203ca39 2748 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 2749 return;
66e67e41
JB		 2750
2751 /*
2752 * AssocResp and ReassocResp have identical structure, so process both
2753 * of them in this function.
2754 */
2755
2756 if (len < 24 + 6)
8d61ffa5 2757 return;
66e67e41
JB		 2758
2759 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2760 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2761 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2762 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2763
bdcbd8e0
JB		 2764 sdata_info(sdata,
2765 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2766 reassoc ? "Rea" : "A", mgmt->sa,
2767 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2768
2769 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2770 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2771
2772 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 2773 elems.timeout_int &&
2774 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 2775 u32 tu, ms;
79ba1d89 2776 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 2777 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2778 sdata_info(sdata,
2779 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2780 mgmt->sa, tu, ms);
66e67e41 2781 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 2782 assoc_data->timeout_started = true;
66e67e41 2783 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 2784 run_again(sdata, assoc_data->timeout);
2785 return;
66e67e41
JB		 2786 }
2787
8d61ffa5 2788 bss = assoc_data->bss;
66e67e41
JB		 2789
2790 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2791 sdata_info(sdata, "%pM denied association (code=%d)\n",
2792 mgmt->sa, status_code);
66e67e41
JB		 2793 ieee80211_destroy_assoc_data(sdata, false);
2794 } else {
8d61ffa5 2795 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 2796 /* oops -- internal error -- send timeout for now */
10a9109f 2797 ieee80211_destroy_assoc_data(sdata, false);
959867fa 2798 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 2799 return;
66e67e41 2800 }
635d999f 2801 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2802
2803 /*
2804 * destroy assoc_data afterwards, as otherwise an idle
2805 * recalc after assoc_data is NULL but before associated
2806 * is set can cause the interface to go idle
2807 */
2808 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2809 }
2810
6ff57cf8 2811 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
66e67e41 2812}
8e3c1b77 2813
98c8fccf 2814static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 2815 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 2816 struct ieee80211_rx_status *rx_status,
d45c4172 2817 struct ieee802_11_elems *elems)
98c8fccf
JB		 2818{
2819 struct ieee80211_local *local = sdata->local;
2820 int freq;
c2b13452 2821 struct ieee80211_bss *bss;
98c8fccf 2822 struct ieee80211_channel *channel;
56007a02 2823
8d61ffa5 2824 sdata_assert_lock(sdata);
b4f286a1 2825
1cd8e88e 2826 if (elems->ds_params)
59eb21a6
BR		 2827 freq = ieee80211_channel_to_frequency(elems->ds_params[0],
2828 rx_status->band);
98c8fccf
JB		 2829 else
2830 freq = rx_status->freq;
2831
2832 channel = ieee80211_get_channel(local->hw.wiphy, freq);
2833
2834 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
2835 return;
2836
98c8fccf 2837 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 2838 channel);
817cee76 2839 if (bss) {
77fdaa12 2840 ieee80211_rx_bss_put(local, bss);
817cee76
AB		 2841 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
2842 }
77fdaa12 2843
37799e52
JB		 2844 if (!sdata->u.mgd.associated ||
2845 !ether_addr_equal(mgmt->bssid, sdata->u.mgd.associated->bssid))
98c8fccf
JB		 2846 return;
2847
04a161f4
JB		 2848 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2849 elems, true);
b4f286a1 2850
f0706e82
JB		 2851}
2852
2853
f698d856 2854static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2855 struct sk_buff *skb)
f0706e82 2856{
af6b6374 2857 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2858 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2859 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2860 size_t baselen, len = skb->len;
ae6a44e3
EK		 2861 struct ieee802_11_elems elems;
2862
15b7b062
KV		 2863 ifmgd = &sdata->u.mgd;
2864
8d61ffa5 2865 sdata_assert_lock(sdata);
77fdaa12 2866
b203ca39 2867 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2868 return; /* ignore ProbeResp to foreign address */
2869
ae6a44e3
EK		 2870 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2871 if (baselen > len)
2872 return;
2873
2874 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 2875 false, &elems);
ae6a44e3 2876
d45c4172 2877 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 2878
77fdaa12 2879 if (ifmgd->associated &&
b203ca39 2880 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2881 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2882
2883 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2884 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2885 /* got probe response, continue with auth */
bdcbd8e0 2886 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2887 ifmgd->auth_data->tries = 0;
2888 ifmgd->auth_data->timeout = jiffies;
89afe614 2889 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2890 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2891 }
f0706e82
JB		 2892}
2893
d91f36db
JB		 2894/*
2895 * This is the canonical list of information elements we care about,
2896 * the filter code also gives us all changes to the Microsoft OUI
2897 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2898 *
2899 * We implement beacon filtering in software since that means we can
2900 * avoid processing the frame here and in cfg80211, and userspace
2901 * will not be able to tell whether the hardware supports it or not.
2902 *
2903 * XXX: This list needs to be dynamic -- userspace needs to be able to
2904 * add items it requires. It also needs to be able to tell us to
2905 * look out for other vendor IEs.
2906 */
2907static const u64 care_about_ies =
1d4df3a5
JB		 2908 (1ULL << WLAN_EID_COUNTRY) |
2909 (1ULL << WLAN_EID_ERP_INFO) |
2910 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2911 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2912 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2913 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2914
8d61ffa5
JB		 2915static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
2916 struct ieee80211_mgmt *mgmt, size_t len,
2917 struct ieee80211_rx_status *rx_status)
f0706e82 2918{
d91f36db 2919 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2920 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2921 size_t baselen;
2922 struct ieee802_11_elems elems;
f698d856 2923 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2924 struct ieee80211_chanctx_conf *chanctx_conf;
2925 struct ieee80211_channel *chan;
bee7f586 2926 struct sta_info *sta;
471b3efd 2927 u32 changed = 0;
f87ad637 2928 bool erp_valid;
7a5158ef 2929 u8 erp_value = 0;
d91f36db 2930 u32 ncrc;
77fdaa12 2931 u8 *bssid;
8d61ffa5 2932 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 2933
8d61ffa5 2934 sdata_assert_lock(sdata);
f0706e82 2935
ae6a44e3
EK		 2936 /* Process beacon from the current BSS */
2937 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2938 if (baselen > len)
8d61ffa5 2939 return;
ae6a44e3 2940
55de908a
JB		 2941 rcu_read_lock();
2942 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2943 if (!chanctx_conf) {
2944 rcu_read_unlock();
8d61ffa5 2945 return;
55de908a
JB		 2946 }
2947
4bf88530 2948 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 2949 rcu_read_unlock();
8d61ffa5 2950 return;
55de908a 2951 }
4bf88530 2952 chan = chanctx_conf->def.chan;
55de908a 2953 rcu_read_unlock();
f0706e82 2954
c65dd147 2955 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 2956 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 2957 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 2958 len - baselen, false, &elems);
77fdaa12 2959
d45c4172 2960 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 2961 if (elems.tim && !elems.parse_error) {
2962 const struct ieee80211_tim_ie *tim_ie = elems.tim;
2963 ifmgd->dtim_period = tim_ie->dtim_period;
2964 }
989c6505 2965 ifmgd->have_beacon = true;
c65dd147 2966 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 2967 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
2968 sdata->vif.bss_conf.sync_tsf =
2969 le64_to_cpu(mgmt->u.beacon.timestamp);
2970 sdata->vif.bss_conf.sync_device_ts =
2971 rx_status->device_timestamp;
2972 if (elems.tim)
2973 sdata->vif.bss_conf.sync_dtim_count =
2974 elems.tim->dtim_count;
2975 else
2976 sdata->vif.bss_conf.sync_dtim_count = 0;
2977 }
66e67e41
JB		 2978 /* continue assoc process */
2979 ifmgd->assoc_data->timeout = jiffies;
89afe614 2980 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 2981 run_again(sdata, ifmgd->assoc_data->timeout);
2982 return;
66e67e41 2983 }
77fdaa12 2984
66e67e41 2985 if (!ifmgd->associated ||
b203ca39 2986 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2987 return;
66e67e41 2988 bssid = ifmgd->associated->bssid;
f0706e82 2989
17e4ec14
JM		 2990 /* Track average RSSI from the Beacon frames of the current AP */
2991 ifmgd->last_beacon_signal = rx_status->signal;
2992 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2993 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2994 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2995 ifmgd->last_cqm_event_signal = 0;
391a200a 2996 ifmgd->count_beacon_signal = 1;
615f7b9b 2997 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2998 } else {
2999 ifmgd->ave_beacon_signal =
3000 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
3001 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
3002 ifmgd->ave_beacon_signal) / 16;
391a200a 3003 ifmgd->count_beacon_signal++;
17e4ec14 3004 }
615f7b9b
MV		 3005
3006 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3007 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3008 int sig = ifmgd->ave_beacon_signal;
3009 int last_sig = ifmgd->last_ave_beacon_signal;
3010
3011 /*
3012 * if signal crosses either of the boundaries, invoke callback
3013 * with appropriate parameters
3014 */
3015 if (sig > ifmgd->rssi_max_thold &&
3016 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3017 ifmgd->last_ave_beacon_signal = sig;
887da917 3018 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 3019 } else if (sig < ifmgd->rssi_min_thold &&
3020 (last_sig >= ifmgd->rssi_max_thold ||
3021 last_sig == 0)) {
3022 ifmgd->last_ave_beacon_signal = sig;
887da917 3023 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 3024 }
3025 }
3026
17e4ec14 3027 if (bss_conf->cqm_rssi_thold &&
391a200a 3028 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3029 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 3030 int sig = ifmgd->ave_beacon_signal / 16;
3031 int last_event = ifmgd->last_cqm_event_signal;
3032 int thold = bss_conf->cqm_rssi_thold;
3033 int hyst = bss_conf->cqm_rssi_hyst;
3034 if (sig < thold &&
3035 (last_event == 0 || sig < last_event - hyst)) {
3036 ifmgd->last_cqm_event_signal = sig;
3037 ieee80211_cqm_rssi_notify(
3038 &sdata->vif,
3039 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3040 GFP_KERNEL);
3041 } else if (sig > thold &&
3042 (last_event == 0 || sig > last_event + hyst)) {
3043 ifmgd->last_cqm_event_signal = sig;
3044 ieee80211_cqm_rssi_notify(
3045 &sdata->vif,
3046 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3047 GFP_KERNEL);
3048 }
3049 }
3050
b291ba11 3051 if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
bdcbd8e0 3052 mlme_dbg_ratelimited(sdata,
112c31f0 3053 "cancelling AP probe due to a received beacon\n");
925e64c3 3054 mutex_lock(&local->mtx);
b291ba11 3055 ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
925e64c3
SG		 3056 ieee80211_run_deferred_scan(local);
3057 mutex_unlock(&local->mtx);
3058
4e751843
JB		 3059 mutex_lock(&local->iflist_mtx);
3060 ieee80211_recalc_ps(local, -1);
3061 mutex_unlock(&local->iflist_mtx);
92778180
JM		 3062 }
3063
b291ba11
JB		 3064 /*
3065 * Push the beacon loss detection into the future since
3066 * we are processing a beacon from the AP just now.
3067 */
d3a910a8 3068 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3069
d91f36db
JB		 3070 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3071 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3072 len - baselen, false, &elems,
d91f36db
JB		 3073 care_about_ies, ncrc);
3074
25c9c875 3075 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3076 bool directed_tim = ieee80211_check_tim(elems.tim,
3077 elems.tim_len,
3078 ifmgd->aid);
1fb3606b 3079 if (directed_tim) {
572e0012 3080 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3081 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3082 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3083 ieee80211_hw_config(local,
3084 IEEE80211_CONF_CHANGE_PS);
3085 }
572e0012 3086 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3087 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3088 local->pspolling = true;
3089
3090 /*
3091 * Here is assumed that the driver will be
3092 * able to send ps-poll frame and receive a
3093 * response even though power save mode is
3094 * enabled, but some drivers might require
3095 * to disable power save here. This needs
3096 * to be investigated.
3097 */
3098 ieee80211_send_pspoll(local, sdata);
3099 }
a97b77b9
VN		 3100 }
3101 }
7a5158ef 3102
488dd7b5 3103 if (sdata->vif.p2p) {
67baf663 3104 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3105 int ret;
3106
3107 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3108 len - baselen,
3109 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3110 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3111 if (ret >= 2) {
3112 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3113 /* valid noa_attr and index changed */
3114 sdata->u.mgd.p2p_noa_index = noa.index;
3115 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3116 changed |= BSS_CHANGED_P2P_PS;
3117 /*
3118 * make sure we update all information, the CRC
3119 * mechanism doesn't look at P2P attributes.
3120 */
3121 ifmgd->beacon_crc_valid = false;
3122 }
3123 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3124 /* noa_attr not found and we had valid noa_attr before */
3125 sdata->u.mgd.p2p_noa_index = -1;
3126 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3127 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3128 ifmgd->beacon_crc_valid = false;
3129 }
3130 }
3131
d8ec4433 3132 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3133 return;
30196673 3134 ifmgd->beacon_crc = ncrc;
d8ec4433 3135 ifmgd->beacon_crc_valid = true;
30196673 3136
d45c4172 3137 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d
JB		 3138
3139 if (ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3140 elems.wmm_param_len))
3141 changed |= BSS_CHANGED_QOS;
3142
c65dd147
EG		 3143 /*
3144 * If we haven't had a beacon before, tell the driver about the
ef429dad 3145 * DTIM period (and beacon timing if desired) now.
c65dd147 3146 */
989c6505 3147 if (!ifmgd->have_beacon) {
c65dd147
EG		 3148 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3149 if (elems.tim)
3150 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3151 else
3152 bss_conf->dtim_period = 1;
ef429dad
JB		 3153
3154 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3155 sdata->vif.bss_conf.sync_tsf =
3156 le64_to_cpu(mgmt->u.beacon.timestamp);
3157 sdata->vif.bss_conf.sync_device_ts =
3158 rx_status->device_timestamp;
3159 if (elems.tim)
3160 sdata->vif.bss_conf.sync_dtim_count =
3161 elems.tim->dtim_count;
3162 else
3163 sdata->vif.bss_conf.sync_dtim_count = 0;
3164 }
3165
989c6505
AB		 3166 changed |= BSS_CHANGED_BEACON_INFO;
3167 ifmgd->have_beacon = true;
482a9c74
AB		 3168
3169 mutex_lock(&local->iflist_mtx);
3170 ieee80211_recalc_ps(local, -1);
3171 mutex_unlock(&local->iflist_mtx);
3172
ce857888 3173 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3174 }
3175
1946bed9 3176 if (elems.erp_info) {
7a5158ef
JB		 3177 erp_valid = true;
3178 erp_value = elems.erp_info[0];
3179 } else {
3180 erp_valid = false;
50c4afb9 3181 }
7a5158ef
JB		 3182 changed |= ieee80211_handle_bss_capability(sdata,
3183 le16_to_cpu(mgmt->u.beacon.capab_info),
3184 erp_valid, erp_value);
f0706e82 3185
1128958d 3186 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3187 sta = sta_info_get(sdata, bssid);
3188
30eb1dc2
JB		 3189 if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
3190 elems.vht_operation, bssid, &changed)) {
3191 mutex_unlock(&local->sta_mtx);
3192 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3193 WLAN_REASON_DEAUTH_LEAVING,
3194 true, deauth_buf);
6ff57cf8
JB		 3195 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3196 sizeof(deauth_buf));
8d61ffa5 3197 return;
30eb1dc2 3198 }
bee7f586
JB		 3199
3200 if (sta && elems.opmode_notif)
3201 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3202 rx_status->band, true);
1128958d 3203 mutex_unlock(&local->sta_mtx);
d3c990fb 3204
04b7b2ff
JB		 3205 if (elems.country_elem && elems.pwr_constr_elem &&
3206 mgmt->u.probe_resp.capab_info &
3207 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 3208 changed |= ieee80211_handle_pwr_constr(sdata, chan,
3209 elems.country_elem,
3210 elems.country_elem_len,
3211 elems.pwr_constr_elem);
3f2355cb 3212
471b3efd 3213 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3214}
3215
1fa57d01
JB		 3216void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3217 struct sk_buff *skb)
f0706e82
JB		 3218{
3219 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3220 struct ieee80211_mgmt *mgmt;
3221 u16 fc;
1b3a2e49
JB		 3222 struct ieee802_11_elems elems;
3223 int ies_len;
f0706e82 3224
f0706e82
JB		 3225 rx_status = (struct ieee80211_rx_status *) skb->cb;
3226 mgmt = (struct ieee80211_mgmt *) skb->data;
3227 fc = le16_to_cpu(mgmt->frame_control);
3228
8d61ffa5 3229 sdata_lock(sdata);
77fdaa12 3230
66e67e41
JB		 3231 switch (fc & IEEE80211_FCTL_STYPE) {
3232 case IEEE80211_STYPE_BEACON:
8d61ffa5 3233 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3234 break;
3235 case IEEE80211_STYPE_PROBE_RESP:
3236 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3237 break;
3238 case IEEE80211_STYPE_AUTH:
8d61ffa5 3239 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3240 break;
3241 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3242 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3243 break;
3244 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3245 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3246 break;
3247 case IEEE80211_STYPE_ASSOC_RESP:
3248 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3249 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3250 break;
3251 case IEEE80211_STYPE_ACTION:
37799e52 3252 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3253 ies_len = skb->len -
3254 offsetof(struct ieee80211_mgmt,
3255 u.action.u.chan_switch.variable);
37799e52
JB		 3256
3257 if (ies_len < 0)
3258 break;
3259
3260 ieee802_11_parse_elems(
3261 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3262 ies_len, true, &elems);
37799e52
JB		 3263
3264 if (elems.parse_error)
3265 break;
3266
1b3a2e49
JB		 3267 ieee80211_sta_process_chanswitch(sdata,
3268 rx_status->mactime,
04a161f4 3269 &elems, false);
1b3a2e49
JB		 3270 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3271 ies_len = skb->len -
3272 offsetof(struct ieee80211_mgmt,
3273 u.action.u.ext_chan_switch.variable);
3274
3275 if (ies_len < 0)
3276 break;
3277
3278 ieee802_11_parse_elems(
3279 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3280 ies_len, true, &elems);
1b3a2e49
JB		 3281
3282 if (elems.parse_error)
3283 break;
3284
3285 /* for the handling code pretend this was also an IE */
3286 elems.ext_chansw_ie =
3287 &mgmt->u.action.u.ext_chan_switch.data;
3288
66e67e41 3289 ieee80211_sta_process_chanswitch(sdata,
37799e52 3290 rx_status->mactime,
04a161f4 3291 &elems, false);
77fdaa12 3292 }
37799e52 3293 break;
77fdaa12 3294 }
8d61ffa5 3295 sdata_unlock(sdata);
f0706e82
JB		 3296}
3297
9c6bd790 3298static void ieee80211_sta_timer(unsigned long data)
f0706e82 3299{
60f8b39c
JB		 3300 struct ieee80211_sub_if_data *sdata =
3301 (struct ieee80211_sub_if_data *) data;
5bb644a0 3302
9b7d72c1 3303 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3304}
3305
04ac3c0e 3306static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3307 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3308{
6ae16775 3309 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3310
37ad3888 3311 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3312 tx, frame_buf);
37ad3888 3313
6ff57cf8
JB		 3314 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3315 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3316}
3317
66e67e41
JB		 3318static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3319{
3320 struct ieee80211_local *local = sdata->local;
3321 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3322 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3323 u32 tx_flags = 0;
66e67e41 3324
8d61ffa5 3325 sdata_assert_lock(sdata);
66e67e41
JB		 3326
3327 if (WARN_ON_ONCE(!auth_data))
3328 return -EINVAL;
3329
66e67e41
JB		 3330 auth_data->tries++;
3331
3332 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3333 sdata_info(sdata, "authentication with %pM timed out\n",
3334 auth_data->bss->bssid);
66e67e41
JB		 3335
3336 /*
3337 * Most likely AP is not in the range so remove the
3338 * bss struct for that AP.
3339 */
3340 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3341
3342 return -ETIMEDOUT;
3343 }
3344
a1845fc7
JB		 3345 drv_mgd_prepare_tx(local, sdata);
3346
66e67e41 3347 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3348 u16 trans = 1;
3349 u16 status = 0;
3350
bdcbd8e0
JB		 3351 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3352 auth_data->bss->bssid, auth_data->tries,
3353 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3354
3355 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3356
3357 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3358 trans = auth_data->sae_trans;
3359 status = auth_data->sae_status;
3360 auth_data->expected_transaction = trans;
3361 }
3362
6211dd12
SG		 3363 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3364 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3365 IEEE80211_TX_INTFL_MLME_CONN_TX;
3366
6b8ece3a
JM		 3367 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3368 auth_data->data, auth_data->data_len,
66e67e41 3369 auth_data->bss->bssid,
1672c0e3
JB		 3370 auth_data->bss->bssid, NULL, 0, 0,
3371 tx_flags);
66e67e41
JB		 3372 } else {
3373 const u8 *ssidie;
3374
bdcbd8e0
JB		 3375 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3376 auth_data->bss->bssid, auth_data->tries,
3377 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3378
9caf0364 3379 rcu_read_lock();
66e67e41 3380 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3381 if (!ssidie) {
3382 rcu_read_unlock();
66e67e41 3383 return -EINVAL;
9caf0364 3384 }
66e67e41
JB		 3385 /*
3386 * Direct probe is sent to broadcast address as some APs
3387 * will not answer to direct packet in unassociated state.
3388 */
3389 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
6211dd12 3390 NULL, 0, (u32) -1, true, 0,
55de908a 3391 auth_data->bss->channel, false);
9caf0364 3392 rcu_read_unlock();
66e67e41
JB		 3393 }
3394
6211dd12 3395 if (tx_flags == 0) {
1672c0e3 3396 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
89afe614 3397 ifmgd->auth_data->timeout_started = true;
8d61ffa5 3398 run_again(sdata, auth_data->timeout);
89afe614
JB		 3399 } else {
3400 auth_data->timeout_started = false;
1672c0e3 3401 }
66e67e41
JB		 3402
3403 return 0;
3404}
3405
3406static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3407{
3408 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3409 struct ieee80211_local *local = sdata->local;
3410
8d61ffa5 3411 sdata_assert_lock(sdata);
66e67e41 3412
66e67e41
JB		 3413 assoc_data->tries++;
3414 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3415 sdata_info(sdata, "association with %pM timed out\n",
3416 assoc_data->bss->bssid);
66e67e41
JB		 3417
3418 /*
3419 * Most likely AP is not in the range so remove the
3420 * bss struct for that AP.
3421 */
3422 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3423
3424 return -ETIMEDOUT;
3425 }
3426
bdcbd8e0
JB		 3427 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3428 assoc_data->bss->bssid, assoc_data->tries,
3429 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3430 ieee80211_send_assoc(sdata);
3431
1672c0e3
JB		 3432 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3433 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3434 assoc_data->timeout_started = true;
8d61ffa5 3435 run_again(sdata, assoc_data->timeout);
89afe614
JB		 3436 } else {
3437 assoc_data->timeout_started = false;
1672c0e3 3438 }
66e67e41
JB		 3439
3440 return 0;
3441}
3442
1672c0e3
JB		 3443void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3444 __le16 fc, bool acked)
3445{
3446 struct ieee80211_local *local = sdata->local;
3447
3448 sdata->u.mgd.status_fc = fc;
3449 sdata->u.mgd.status_acked = acked;
3450 sdata->u.mgd.status_received = true;
3451
3452 ieee80211_queue_work(&local->hw, &sdata->work);
3453}
3454
1fa57d01 3455void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3456{
9c6bd790 3457 struct ieee80211_local *local = sdata->local;
1fa57d01 3458 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3459
8d61ffa5 3460 sdata_lock(sdata);
77fdaa12 3461
1672c0e3
JB		 3462 if (ifmgd->status_received) {
3463 __le16 fc = ifmgd->status_fc;
3464 bool status_acked = ifmgd->status_acked;
3465
3466 ifmgd->status_received = false;
3467 if (ifmgd->auth_data &&
3468 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3469 if (status_acked) {
3470 ifmgd->auth_data->timeout =
3471 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3472 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3473 } else {
3474 ifmgd->auth_data->timeout = jiffies - 1;
3475 }
89afe614 3476 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3477 } else if (ifmgd->assoc_data &&
3478 (ieee80211_is_assoc_req(fc) ||
3479 ieee80211_is_reassoc_req(fc))) {
3480 if (status_acked) {
3481 ifmgd->assoc_data->timeout =
3482 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3483 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3484 } else {
3485 ifmgd->assoc_data->timeout = jiffies - 1;
3486 }
89afe614 3487 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3488 }
3489 }
3490
89afe614 3491 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3492 time_after(jiffies, ifmgd->auth_data->timeout)) {
3493 if (ifmgd->auth_data->done) {
3494 /*
3495 * ok ... we waited for assoc but userspace didn't,
3496 * so let's just kill the auth data
3497 */
3498 ieee80211_destroy_auth_data(sdata, false);
3499 } else if (ieee80211_probe_auth(sdata)) {
3500 u8 bssid[ETH_ALEN];
3501
3502 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3503
3504 ieee80211_destroy_auth_data(sdata, false);
3505
6ff57cf8 3506 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3507 }
89afe614 3508 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3509 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3510
89afe614 3511 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3512 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3513 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3514 ieee80211_do_assoc(sdata)) {
959867fa 3515 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3516
3517 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3518 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3519 }
89afe614 3520 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3521 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3522
b291ba11
JB		 3523 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
3524 IEEE80211_STA_CONNECTION_POLL) &&
3525 ifmgd->associated) {
a43abf29 3526 u8 bssid[ETH_ALEN];
72a8a3ed 3527 int max_tries;
a43abf29 3528
0c1ad2ca 3529 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3530
72a8a3ed 3531 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3532 max_tries = max_nullfunc_tries;
72a8a3ed 3533 else
180205bd 3534 max_tries = max_probe_tries;
72a8a3ed 3535
4e5ff376
FF		 3536 /* ACK received for nullfunc probing frame */
3537 if (!ifmgd->probe_send_count)
3538 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3539 else if (ifmgd->nullfunc_failed) {
3540 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3541 mlme_dbg(sdata,
3542 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3543 bssid, ifmgd->probe_send_count,
3544 max_tries);
04ac3c0e
FF		 3545 ieee80211_mgd_probe_ap_send(sdata);
3546 } else {
bdcbd8e0
JB		 3547 mlme_dbg(sdata,
3548 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3549 bssid);
95acac61 3550 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3551 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3552 false);
04ac3c0e
FF		 3553 }
3554 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3555 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3556 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3557 mlme_dbg(sdata,
3558 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3559 bssid, probe_wait_ms);
95acac61 3560 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3561 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3562 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3563 mlme_dbg(sdata,
3564 "No probe response from AP %pM after %dms, try %d/%i\n",
3565 bssid, probe_wait_ms,
3566 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3567 ieee80211_mgd_probe_ap_send(sdata);
3568 } else {
b291ba11
JB		 3569 /*
3570 * We actually lost the connection ... or did we?
3571 * Let's make sure!
3572 */
b38afa87
BG		 3573 wiphy_debug(local->hw.wiphy,
3574 "%s: No probe response from AP %pM"
3575 " after %dms, disconnecting.\n",
3576 sdata->name,
180205bd 3577 bssid, probe_wait_ms);
04ac3c0e 3578
95acac61 3579 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3580 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3581 }
3582 }
3583
8d61ffa5 3584 sdata_unlock(sdata);
f0706e82
JB		 3585}
3586
b291ba11
JB		 3587static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3588{
3589 struct ieee80211_sub_if_data *sdata =
3590 (struct ieee80211_sub_if_data *) data;
3591 struct ieee80211_local *local = sdata->local;
3592
3593 if (local->quiescing)
3594 return;
3595
682bd38b 3596 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3597 ieee80211_queue_work(&sdata->local->hw,
3598 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3599}
3600
3601static void ieee80211_sta_conn_mon_timer(unsigned long data)
3602{
3603 struct ieee80211_sub_if_data *sdata =
3604 (struct ieee80211_sub_if_data *) data;
3605 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3606 struct ieee80211_local *local = sdata->local;
3607
3608 if (local->quiescing)
3609 return;
3610
42935eca 3611 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3612}
3613
3614static void ieee80211_sta_monitor_work(struct work_struct *work)
3615{
3616 struct ieee80211_sub_if_data *sdata =
3617 container_of(work, struct ieee80211_sub_if_data,
3618 u.mgd.monitor_work);
3619
3620 ieee80211_mgd_probe_ap(sdata, false);
3621}
3622
9c6bd790
JB		 3623static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3624{
494f1fe5
EP		 3625 u32 flags;
3626
ad935687 3627 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3628 __ieee80211_stop_poll(sdata);
ad935687 3629
b291ba11 3630 /* let's probe the connection once */
494f1fe5
EP		 3631 flags = sdata->local->hw.flags;
3632 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3633 ieee80211_queue_work(&sdata->local->hw,
3634 &sdata->u.mgd.monitor_work);
b291ba11 3635 /* and do all the other regular work too */
64592c8f 3636 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3637 }
9c6bd790 3638}
f0706e82 3639
b8360ab8
JB		 3640#ifdef CONFIG_PM
3641void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3642{
3643 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3644
8d61ffa5 3645 sdata_lock(sdata);
b8360ab8 3646 if (!ifmgd->associated) {
8d61ffa5 3647 sdata_unlock(sdata);
b8360ab8
JB		 3648 return;
3649 }
3650
3651 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3652 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3653 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3654 ieee80211_sta_connection_lost(sdata,
3655 ifmgd->associated->bssid,
3656 WLAN_REASON_UNSPECIFIED,
3657 true);
8d61ffa5 3658 sdata_unlock(sdata);
b8360ab8
JB		 3659 return;
3660 }
8d61ffa5 3661 sdata_unlock(sdata);
b8360ab8
JB		 3662}
3663#endif
3664
9c6bd790
JB		 3665/* interface setup */
3666void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3667{
46900298 3668 struct ieee80211_if_managed *ifmgd;
988c0f72 3669
46900298 3670 ifmgd = &sdata->u.mgd;
b291ba11 3671 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3672 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3673 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3674 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3675 INIT_WORK(&ifmgd->csa_connection_drop_work,
3676 ieee80211_csa_connection_drop_work);
d1f5b7a3 3677 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
46900298 3678 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3679 (unsigned long) sdata);
b291ba11
JB		 3680 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3681 (unsigned long) sdata);
3682 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3683 (unsigned long) sdata);
46900298 3684 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3685 (unsigned long) sdata);
9c6bd790 3686
ab1faead 3687 ifmgd->flags = 0;
1478acb3 3688 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 3689 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
3690 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 3691 ifmgd->p2p_noa_index = -1;
bbbdff9e 3692
0f78231b
JB		 3693 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3694 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3695 else
3696 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3697}
3698
77fdaa12
JB		 3699/* scan finished notification */
3700void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3701{
31ee67a1 3702 struct ieee80211_sub_if_data *sdata;
60f8b39c 3703
77fdaa12
JB		 3704 /* Restart STA timers */
3705 rcu_read_lock();
370bd005
BG		 3706 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3707 if (ieee80211_sdata_running(sdata))
3708 ieee80211_restart_sta_timer(sdata);
3709 }
77fdaa12
JB		 3710 rcu_read_unlock();
3711}
60f8b39c 3712
77fdaa12
JB		 3713int ieee80211_max_network_latency(struct notifier_block *nb,
3714 unsigned long data, void *dummy)
3715{
3716 s32 latency_usec = (s32) data;
3717 struct ieee80211_local *local =
3718 container_of(nb, struct ieee80211_local,
3719 network_latency_notifier);
1fa6f4af 3720
77fdaa12
JB		 3721 mutex_lock(&local->iflist_mtx);
3722 ieee80211_recalc_ps(local, latency_usec);
3723 mutex_unlock(&local->iflist_mtx);
dfe67012 3724
77fdaa12 3725 return 0;
9c6bd790
JB		 3726}
3727
f2d9d270
JB		 3728static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3729 struct cfg80211_bss *cbss)
3730{
3731 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3732 const u8 *ht_cap_ie, *vht_cap_ie;
3733 const struct ieee80211_ht_cap *ht_cap;
3734 const struct ieee80211_vht_cap *vht_cap;
3735 u8 chains = 1;
3736
3737 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3738 return chains;
3739
9caf0364 3740 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3741 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3742 ht_cap = (void *)(ht_cap_ie + 2);
3743 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3744 /*
3745 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3746 * "Tx Unequal Modulation Supported" fields.
3747 */
3748 }
3749
3750 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3751 return chains;
3752
9caf0364 3753 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3754 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3755 u8 nss;
3756 u16 tx_mcs_map;
3757
3758 vht_cap = (void *)(vht_cap_ie + 2);
3759 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3760 for (nss = 8; nss > 0; nss--) {
3761 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3762 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3763 break;
3764 }
3765 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3766 chains = max(chains, nss);
3767 }
3768
3769 return chains;
3770}
3771
b17166a7
JB		 3772static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3773 struct cfg80211_bss *cbss)
a1cf775d
JB		 3774{
3775 struct ieee80211_local *local = sdata->local;
3776 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3777 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3778 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3779 struct ieee80211_supported_band *sband;
4bf88530 3780 struct cfg80211_chan_def chandef;
f2d9d270 3781 int ret;
a1cf775d 3782
24398e39
JB		 3783 sband = local->hw.wiphy->bands[cbss->channel->band];
3784
f2d9d270
JB		 3785 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3786 IEEE80211_STA_DISABLE_80P80MHZ |
3787 IEEE80211_STA_DISABLE_160MHZ);
3788
9caf0364
JB		 3789 rcu_read_lock();
3790
f2d9d270
JB		 3791 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3792 sband->ht_cap.ht_supported) {
08e6effa 3793 const u8 *ht_oper_ie, *ht_cap;
24398e39 3794
9caf0364 3795 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3796 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3797 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa
JB		 3798
3799 ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
3800 if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
3801 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3802 ht_oper = NULL;
3803 }
24398e39
JB		 3804 }
3805
f2d9d270
JB		 3806 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3807 sband->vht_cap.vht_supported) {
08e6effa 3808 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 3809
9caf0364
JB		 3810 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3811 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3812 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3813 vht_oper = (void *)(vht_oper_ie + 2);
3814 if (vht_oper && !ht_oper) {
3815 vht_oper = NULL;
bdcbd8e0 3816 sdata_info(sdata,
f2d9d270 3817 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 3818 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3819 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 3820 }
08e6effa
JB		 3821
3822 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
3823 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
3824 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3825 vht_oper = NULL;
3826 }
24398e39
JB		 3827 }
3828
f2d9d270
JB		 3829 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3830 cbss->channel,
3831 ht_oper, vht_oper,
30eb1dc2 3832 &chandef, true);
04ecd257 3833
f2d9d270
JB		 3834 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3835 local->rx_chains);
24398e39 3836
9caf0364
JB		 3837 rcu_read_unlock();
3838
04ecd257
JB		 3839 /* will change later if needed */
3840 sdata->smps_mode = IEEE80211_SMPS_OFF;
3841
f2d9d270
JB		 3842 /*
3843 * If this fails (possibly due to channel context sharing
3844 * on incompatible channels, e.g. 80+80 and 160 sharing the
3845 * same control channel) try to use a smaller bandwidth.
3846 */
3847 ret = ieee80211_vif_use_channel(sdata, &chandef,
3848 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 3849
3850 /* don't downgrade for 5 and 10 MHz channels, though. */
3851 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
3852 chandef.width == NL80211_CHAN_WIDTH_10)
3853 return ret;
3854
d601cd8d 3855 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
f2d9d270 3856 ifmgd->flags |= chandef_downgrade(&chandef);
d601cd8d
JB		 3857 ret = ieee80211_vif_use_channel(sdata, &chandef,
3858 IEEE80211_CHANCTX_SHARED);
3859 }
f2d9d270 3860 return ret;
b17166a7
JB		 3861}
3862
3863static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3864 struct cfg80211_bss *cbss, bool assoc)
3865{
3866 struct ieee80211_local *local = sdata->local;
3867 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3868 struct ieee80211_bss *bss = (void *)cbss->priv;
3869 struct sta_info *new_sta = NULL;
3870 bool have_sta = false;
3871 int err;
3872
3873 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3874 return -EINVAL;
3875
3876 if (assoc) {
3877 rcu_read_lock();
3878 have_sta = sta_info_get(sdata, cbss->bssid);
3879 rcu_read_unlock();
3880 }
3881
3882 if (!have_sta) {
3883 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3884 if (!new_sta)
3885 return -ENOMEM;
3886 }
13e0c8e3 3887 if (new_sta) {
5d6a1b06
JB		 3888 u32 rates = 0, basic_rates = 0;
3889 bool have_higher_than_11mbit;
3890 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 3891 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 3892 struct ieee80211_supported_band *sband;
8cef2c9d 3893 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 3894 int shift;
3895 u32 rate_flags;
b17166a7
JB		 3896
3897 sband = local->hw.wiphy->bands[cbss->channel->band];
3898
3899 err = ieee80211_prep_channel(sdata, cbss);
3900 if (err) {
3901 sta_info_free(local, new_sta);
2103dec1 3902 return -EINVAL;
b17166a7 3903 }
2103dec1
SW		 3904 shift = ieee80211_vif_get_shift(&sdata->vif);
3905
3906 rcu_read_lock();
3907 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3908 if (WARN_ON(!chanctx_conf)) {
3909 rcu_read_unlock();
3910 return -EINVAL;
3911 }
3912 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
3913 rcu_read_unlock();
5d6a1b06 3914
5d6a1b06
JB		 3915 ieee80211_get_rates(sband, bss->supp_rates,
3916 bss->supp_rates_len,
3917 &rates, &basic_rates,
3918 &have_higher_than_11mbit,
2103dec1
SW		 3919 &min_rate, &min_rate_index,
3920 shift, rate_flags);
5d6a1b06
JB		 3921
3922 /*
3923 * This used to be a workaround for basic rates missing
3924 * in the association response frame. Now that we no
3925 * longer use the basic rates from there, it probably
3926 * doesn't happen any more, but keep the workaround so
3927 * in case some *other* APs are buggy in different ways
3928 * we can connect -- with a warning.
3929 */
3930 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3931 sdata_info(sdata,
3932 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3933 basic_rates = BIT(min_rate_index);
3934 }
3935
13e0c8e3 3936 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3937 sdata->vif.bss_conf.basic_rates = basic_rates;
3938
3939 /* cf. IEEE 802.11 9.2.12 */
55de908a 3940 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3941 have_higher_than_11mbit)
3942 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3943 else
3944 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3945
3946 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3947
8c358bcd
JB		 3948 /* set timing information */
3949 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 3950 rcu_read_lock();
ef429dad
JB		 3951 ies = rcu_dereference(cbss->beacon_ies);
3952 if (ies) {
3953 const u8 *tim_ie;
3954
3955 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3956 sdata->vif.bss_conf.sync_device_ts =
3957 bss->device_ts_beacon;
3958 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
3959 ies->data, ies->len);
3960 if (tim_ie && tim_ie[1] >= 2)
3961 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
3962 else
3963 sdata->vif.bss_conf.sync_dtim_count = 0;
3964 } else if (!(local->hw.flags &
3965 IEEE80211_HW_TIMING_BEACON_ONLY)) {
3966 ies = rcu_dereference(cbss->proberesp_ies);
3967 /* must be non-NULL since beacon IEs were NULL */
3968 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3969 sdata->vif.bss_conf.sync_device_ts =
3970 bss->device_ts_presp;
3971 sdata->vif.bss_conf.sync_dtim_count = 0;
3972 } else {
3973 sdata->vif.bss_conf.sync_tsf = 0;
3974 sdata->vif.bss_conf.sync_device_ts = 0;
3975 sdata->vif.bss_conf.sync_dtim_count = 0;
3976 }
8cef2c9d 3977 rcu_read_unlock();
8c358bcd
JB		 3978
3979 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 3980 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 3981 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
3982 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 3983
3984 if (assoc)
13e0c8e3 3985 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 3986
13e0c8e3
JB		 3987 err = sta_info_insert(new_sta);
3988 new_sta = NULL;
a1cf775d 3989 if (err) {
bdcbd8e0
JB		 3990 sdata_info(sdata,
3991 "failed to insert STA entry for the AP (error %d)\n",
3992 err);
a1cf775d
JB		 3993 return err;
3994 }
3995 } else
b203ca39 3996 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 3997
3998 return 0;
3999}
4000
77fdaa12
JB		 4001/* config hooks */
4002int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4003 struct cfg80211_auth_request *req)
9c6bd790 4004{
66e67e41
JB		 4005 struct ieee80211_local *local = sdata->local;
4006 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4007 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4008 u16 auth_alg;
66e67e41
JB		 4009 int err;
4010
4011 /* prepare auth data structure */
9c6bd790 4012
77fdaa12
JB		 4013 switch (req->auth_type) {
4014 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4015 auth_alg = WLAN_AUTH_OPEN;
4016 break;
4017 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4018 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4019 return -EOPNOTSUPP;
77fdaa12
JB		 4020 auth_alg = WLAN_AUTH_SHARED_KEY;
4021 break;
4022 case NL80211_AUTHTYPE_FT:
4023 auth_alg = WLAN_AUTH_FT;
4024 break;
4025 case NL80211_AUTHTYPE_NETWORK_EAP:
4026 auth_alg = WLAN_AUTH_LEAP;
4027 break;
6b8ece3a
JM		 4028 case NL80211_AUTHTYPE_SAE:
4029 auth_alg = WLAN_AUTH_SAE;
4030 break;
77fdaa12
JB		 4031 default:
4032 return -EOPNOTSUPP;
60f8b39c 4033 }
77fdaa12 4034
6b8ece3a
JM		 4035 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4036 req->ie_len, GFP_KERNEL);
66e67e41 4037 if (!auth_data)
9c6bd790 4038 return -ENOMEM;
77fdaa12 4039
66e67e41 4040 auth_data->bss = req->bss;
77fdaa12 4041
6b8ece3a
JM		 4042 if (req->sae_data_len >= 4) {
4043 __le16 *pos = (__le16 *) req->sae_data;
4044 auth_data->sae_trans = le16_to_cpu(pos[0]);
4045 auth_data->sae_status = le16_to_cpu(pos[1]);
4046 memcpy(auth_data->data, req->sae_data + 4,
4047 req->sae_data_len - 4);
4048 auth_data->data_len += req->sae_data_len - 4;
4049 }
4050
77fdaa12 4051 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4052 memcpy(&auth_data->data[auth_data->data_len],
4053 req->ie, req->ie_len);
4054 auth_data->data_len += req->ie_len;
9c6bd790 4055 }
77fdaa12 4056
fffd0934 4057 if (req->key && req->key_len) {
66e67e41
JB		 4058 auth_data->key_len = req->key_len;
4059 auth_data->key_idx = req->key_idx;
4060 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4061 }
4062
66e67e41 4063 auth_data->algorithm = auth_alg;
60f8b39c 4064
66e67e41 4065 /* try to authenticate/probe */
2a33bee2 4066
66e67e41
JB		 4067 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4068 ifmgd->assoc_data) {
4069 err = -EBUSY;
4070 goto err_free;
2a33bee2
GE		 4071 }
4072
66e67e41
JB		 4073 if (ifmgd->auth_data)
4074 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4075
66e67e41
JB		 4076 /* prep auth_data so we don't go into idle on disassoc */
4077 ifmgd->auth_data = auth_data;
af6b6374 4078
7b119dc0
JB		 4079 if (ifmgd->associated) {
4080 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4081
4082 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4083 WLAN_REASON_UNSPECIFIED,
4084 false, frame_buf);
4085
6ff57cf8
JB		 4086 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4087 sizeof(frame_buf));
7b119dc0 4088 }
af6b6374 4089
bdcbd8e0 4090 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4091
a1cf775d
JB		 4092 err = ieee80211_prep_connection(sdata, req->bss, false);
4093 if (err)
66e67e41 4094 goto err_clear;
af6b6374 4095
66e67e41
JB		 4096 err = ieee80211_probe_auth(sdata);
4097 if (err) {
66e67e41
JB		 4098 sta_info_destroy_addr(sdata, req->bss->bssid);
4099 goto err_clear;
4100 }
4101
4102 /* hold our own reference */
5b112d3d 4103 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4104 return 0;
66e67e41
JB		 4105
4106 err_clear:
3d2abdfd
EP		 4107 memset(ifmgd->bssid, 0, ETH_ALEN);
4108 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4109 ifmgd->auth_data = NULL;
4110 err_free:
4111 kfree(auth_data);
66e67e41 4112 return err;
af6b6374
JB		 4113}
4114
77fdaa12
JB		 4115int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4116 struct cfg80211_assoc_request *req)
f0706e82 4117{
66e67e41 4118 struct ieee80211_local *local = sdata->local;
77fdaa12 4119 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4120 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4121 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4122 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4123 struct ieee80211_supported_band *sband;
b08fbbd8 4124 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4125 int i, err;
f0706e82 4126
66e67e41
JB		 4127 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4128 if (!assoc_data)
4129 return -ENOMEM;
4130
9caf0364
JB		 4131 rcu_read_lock();
4132 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4133 if (!ssidie) {
4134 rcu_read_unlock();
4135 kfree(assoc_data);
4136 return -EINVAL;
4137 }
4138 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4139 assoc_data->ssid_len = ssidie[1];
4140 rcu_read_unlock();
4141
7b119dc0
JB		 4142 if (ifmgd->associated) {
4143 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4144
4145 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4146 WLAN_REASON_UNSPECIFIED,
4147 false, frame_buf);
4148
6ff57cf8
JB		 4149 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4150 sizeof(frame_buf));
7b119dc0 4151 }
66e67e41
JB		 4152
4153 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4154 err = -EBUSY;
4155 goto err_free;
af6b6374 4156 }
77fdaa12 4157
66e67e41
JB		 4158 if (ifmgd->assoc_data) {
4159 err = -EBUSY;
4160 goto err_free;
4161 }
77fdaa12 4162
66e67e41
JB		 4163 if (ifmgd->auth_data) {
4164 bool match;
4165
4166 /* keep sta info, bssid if matching */
b203ca39 4167 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4168 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4169 }
4170
66e67e41 4171 /* prepare assoc data */
19c3b830 4172
d8ec4433
JO		 4173 ifmgd->beacon_crc_valid = false;
4174
de5036aa
JB		 4175 /*
4176 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4177 * We still associate in non-HT mode (11a/b/g) if any one of these
4178 * ciphers is configured as pairwise.
4179 * We can set this to true for non-11n hardware, that'll be checked
4180 * separately along with the peer capabilities.
4181 */
1c4cb928 4182 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4183 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4184 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4185 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4186 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4187 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4188 netdev_info(sdata->dev,
d545daba 4189 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4190 }
4191 }
77fdaa12 4192
d545daba 4193 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4194 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4195 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4196 }
ef96a842 4197
dd5ecfea
JB		 4198 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4199 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4200
4e74bfdb
JB		 4201 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4202 sband = local->hw.wiphy->bands[req->bss->channel->band];
4203 if (!sband->ht_cap.ht_supported ||
1c4cb928 4204 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
a8243b72 4205 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
1b49de26
JB		 4206 if (!bss->wmm_used)
4207 netdev_info(sdata->dev,
4208 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4209 }
4e74bfdb 4210
d545daba
MP		 4211 /* disable VHT if we don't support it or the AP doesn't use WMM */
4212 if (!sband->vht_cap.vht_supported ||
4213 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used) {
4214 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1b49de26
JB		 4215 if (!bss->wmm_used)
4216 netdev_info(sdata->dev,
4217 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4218 }
4219
ef96a842
BG		 4220 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4221 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4222 sizeof(ifmgd->ht_capa_mask));
4223
dd5ecfea
JB		 4224 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4225 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4226 sizeof(ifmgd->vht_capa_mask));
4227
77fdaa12 4228 if (req->ie && req->ie_len) {
66e67e41
JB		 4229 memcpy(assoc_data->ie, req->ie, req->ie_len);
4230 assoc_data->ie_len = req->ie_len;
4231 }
f679f65d 4232
66e67e41 4233 assoc_data->bss = req->bss;
f679f65d 4234
af6b6374
JB		 4235 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4236 if (ifmgd->powersave)
04ecd257 4237 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4238 else
04ecd257 4239 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4240 } else
04ecd257 4241 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4242
66e67e41 4243 assoc_data->capability = req->bss->capability;
32c5057b
JB		 4244 assoc_data->wmm = bss->wmm_used &&
4245 (local->hw.queues >= IEEE80211_NUM_ACS);
66e67e41
JB		 4246 assoc_data->supp_rates = bss->supp_rates;
4247 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4248
9caf0364 4249 rcu_read_lock();
9dde6423
JB		 4250 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4251 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4252 assoc_data->ap_ht_param =
4253 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4254 else
a8243b72 4255 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4256 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4257 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4258 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4259 sizeof(struct ieee80211_vht_cap));
4260 else
4261 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4262 rcu_read_unlock();
63f170e0 4263
ab13315a 4264 if (bss->wmm_used && bss->uapsd_supported &&
24aa11ab
AB		 4265 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
4266 sdata->wmm_acm != 0xff) {
76f0303d 4267 assoc_data->uapsd = true;
ab13315a
KV		 4268 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4269 } else {
76f0303d 4270 assoc_data->uapsd = false;
ab13315a
KV		 4271 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4272 }
4273
77fdaa12 4274 if (req->prev_bssid)
66e67e41 4275 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4276
4277 if (req->use_mfp) {
4278 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4279 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4280 } else {
4281 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4282 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4283 }
4284
4285 if (req->crypto.control_port)
4286 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4287 else
4288 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4289
a621fa4d
JB		 4290 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4291 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
4292
66e67e41
JB		 4293 /* kick off associate process */
4294
4295 ifmgd->assoc_data = assoc_data;
826262c3 4296 ifmgd->dtim_period = 0;
989c6505 4297 ifmgd->have_beacon = false;
66e67e41 4298
a1cf775d
JB		 4299 err = ieee80211_prep_connection(sdata, req->bss, true);
4300 if (err)
4301 goto err_clear;
66e67e41 4302
c65dd147
EG		 4303 rcu_read_lock();
4304 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4305
c65dd147
EG		 4306 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4307 !beacon_ies) {
4308 /*
4309 * Wait up to one beacon interval ...
4310 * should this be more if we miss one?
4311 */
4312 sdata_info(sdata, "waiting for beacon from %pM\n",
4313 ifmgd->bssid);
4314 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4315 assoc_data->timeout_started = true;
c65dd147
EG		 4316 assoc_data->need_beacon = true;
4317 } else if (beacon_ies) {
4318 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4319 beacon_ies->data,
4320 beacon_ies->len);
ef429dad
JB		 4321 u8 dtim_count = 0;
4322
c65dd147
EG		 4323 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4324 const struct ieee80211_tim_ie *tim;
4325 tim = (void *)(tim_ie + 2);
4326 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4327 dtim_count = tim->dtim_count;
826262c3 4328 }
989c6505 4329 ifmgd->have_beacon = true;
66e67e41 4330 assoc_data->timeout = jiffies;
89afe614 4331 assoc_data->timeout_started = true;
ef429dad
JB		 4332
4333 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4334 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4335 sdata->vif.bss_conf.sync_device_ts =
4336 bss->device_ts_beacon;
4337 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4338 }
c65dd147
EG		 4339 } else {
4340 assoc_data->timeout = jiffies;
89afe614 4341 assoc_data->timeout_started = true;
66e67e41 4342 }
c65dd147
EG		 4343 rcu_read_unlock();
4344
8d61ffa5 4345 run_again(sdata, assoc_data->timeout);
66e67e41 4346
fcff4f10
PS		 4347 if (bss->corrupt_data) {
4348 char *corrupt_type = "data";
4349 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4350 if (bss->corrupt_data &
4351 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4352 corrupt_type = "beacon and probe response";
4353 else
4354 corrupt_type = "beacon";
4355 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4356 corrupt_type = "probe response";
bdcbd8e0
JB		 4357 sdata_info(sdata, "associating with AP with corrupt %s\n",
4358 corrupt_type);
fcff4f10
PS		 4359 }
4360
8d61ffa5 4361 return 0;
66e67e41 4362 err_clear:
3d2abdfd
EP		 4363 memset(ifmgd->bssid, 0, ETH_ALEN);
4364 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4365 ifmgd->assoc_data = NULL;
4366 err_free:
4367 kfree(assoc_data);
66e67e41 4368 return err;
f0706e82
JB		 4369}
4370
77fdaa12 4371int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4372 struct cfg80211_deauth_request *req)
f0706e82 4373{
46900298 4374 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4375 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4376 bool tx = !req->local_state_change;
de3d43a3 4377 bool report_frame = false;
f0706e82 4378
bdcbd8e0
JB		 4379 sdata_info(sdata,
4380 "deauthenticating from %pM by local choice (reason=%d)\n",
4381 req->bssid, req->reason_code);
0ff71613 4382
86552017 4383 if (ifmgd->auth_data) {
8c7d857c 4384 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4385 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4386 IEEE80211_STYPE_DEAUTH,
6863255b 4387 req->reason_code, tx,
37ad3888 4388 frame_buf);
86552017 4389 ieee80211_destroy_auth_data(sdata, false);
86552017 4390
de3d43a3 4391 report_frame = true;
86552017 4392 goto out;
8c7d857c
EG		 4393 }
4394
86552017
JB		 4395 if (ifmgd->associated &&
4396 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
4397 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4398 req->reason_code, tx, frame_buf);
de3d43a3 4399 report_frame = true;
86552017 4400 }
37ad3888 4401
86552017 4402 out:
de3d43a3 4403 if (report_frame)
6ff57cf8
JB		 4404 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4405 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4406
f0706e82
JB		 4407 return 0;
4408}
84363e6e 4409
77fdaa12 4410int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4411 struct cfg80211_disassoc_request *req)
9c6bd790 4412{
77fdaa12 4413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4414 u8 bssid[ETH_ALEN];
6ae16775 4415 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4416
8d8b261a
JB		 4417 /*
4418 * cfg80211 should catch this ... but it's racy since
4419 * we can receive a disassoc frame, process it, hand it
4420 * to cfg80211 while that's in a locked section already
4421 * trying to tell us that the user wants to disconnect.
4422 */
8d61ffa5 4423 if (ifmgd->associated != req->bss)
77fdaa12 4424 return -ENOLINK;
77fdaa12 4425
bdcbd8e0
JB		 4426 sdata_info(sdata,
4427 "disassociating from %pM by local choice (reason=%d)\n",
4428 req->bss->bssid, req->reason_code);
0ff71613 4429
e69e95db 4430 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4431 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4432 req->reason_code, !req->local_state_change,
4433 frame_buf);
10f644a4 4434
6ff57cf8
JB		 4435 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4436 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4437
10f644a4
JB		 4438 return 0;
4439}
026331c4 4440
afa762f6 4441void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4442{
4443 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4444
49921859
BG		 4445 /*
4446 * Make sure some work items will not run after this,
4447 * they will not do anything but might not have been
4448 * cancelled when disconnecting.
4449 */
4450 cancel_work_sync(&ifmgd->monitor_work);
4451 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4452 cancel_work_sync(&ifmgd->request_smps_work);
4453 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4454 cancel_work_sync(&ifmgd->chswitch_work);
4455
8d61ffa5 4456 sdata_lock(sdata);
959867fa
JB		 4457 if (ifmgd->assoc_data) {
4458 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4459 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4460 cfg80211_assoc_timeout(sdata->dev, bss);
4461 }
54e4ffb2
JB		 4462 if (ifmgd->auth_data)
4463 ieee80211_destroy_auth_data(sdata, false);
4464 del_timer_sync(&ifmgd->timer);
8d61ffa5 4465 sdata_unlock(sdata);
54e4ffb2
JB		 4466}
4467
a97c13c3
JO		 4468void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4469 enum nl80211_cqm_rssi_threshold_event rssi_event,
4470 gfp_t gfp)
4471{
4472 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4473
b5878a2d
JB		 4474 trace_api_cqm_rssi_notify(sdata, rssi_event);
4475
a97c13c3
JO		 4476 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4477}
4478EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
Linux 6.x block layer and io_uring tree(s)