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mac80211: convert rssi_callback() to event_callback()
[deliverable/linux.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>
d98ad83e 8 * Copyright 2013-2014 Intel Mobile Communications GmbH
f0706e82
JB		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
5b323edb 15#include <linux/delay.h>
f0706e82
JB		 16#include <linux/if_ether.h>
17#include <linux/skbuff.h>
f0706e82 18#include <linux/if_arp.h>
f0706e82 19#include <linux/etherdevice.h>
d9b93842 20#include <linux/moduleparam.h>
d0709a65 21#include <linux/rtnetlink.h>
e8db0be1 22#include <linux/pm_qos.h>
d91f36db 23#include <linux/crc32.h>
5a0e3ad6 24#include <linux/slab.h>
bc3b2d7f 25#include <linux/export.h>
f0706e82 26#include <net/mac80211.h>
472dbc45 27#include <asm/unaligned.h>
60f8b39c 28
f0706e82 29#include "ieee80211_i.h"
24487981 30#include "driver-ops.h"
2c8dccc7
JB		 31#include "rate.h"
32#include "led.h"
f0706e82 33
1672c0e3 34#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 35#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 36#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
37#define IEEE80211_AUTH_MAX_TRIES 3
38#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
39#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 40#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 41#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
42#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 43
180205bd
BG		 44static int max_nullfunc_tries = 2;
45module_param(max_nullfunc_tries, int, 0644);
46MODULE_PARM_DESC(max_nullfunc_tries,
47 "Maximum nullfunc tx tries before disconnecting (reason 4).");
48
49static int max_probe_tries = 5;
50module_param(max_probe_tries, int, 0644);
51MODULE_PARM_DESC(max_probe_tries,
52 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 53
54/*
7ccc8bd7
FF		 55 * Beacon loss timeout is calculated as N frames times the
56 * advertised beacon interval. This may need to be somewhat
57 * higher than what hardware might detect to account for
58 * delays in the host processing frames. But since we also
59 * probe on beacon miss before declaring the connection lost
60 * default to what we want.
b291ba11 61 */
59c1ec2b
BG		 62static int beacon_loss_count = 7;
63module_param(beacon_loss_count, int, 0644);
64MODULE_PARM_DESC(beacon_loss_count,
65 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 66
b291ba11
JB		 67/*
68 * Time the connection can be idle before we probe
69 * it to see if we can still talk to the AP.
70 */
d1c5091f 71#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 72/*
73 * Time we wait for a probe response after sending
74 * a probe request because of beacon loss or for
75 * checking the connection still works.
76 */
180205bd
BG		 77static int probe_wait_ms = 500;
78module_param(probe_wait_ms, int, 0644);
79MODULE_PARM_DESC(probe_wait_ms,
80 "Maximum time(ms) to wait for probe response"
81 " before disconnecting (reason 4).");
f0706e82 82
17e4ec14
JM		 83/*
84 * Weight given to the latest Beacon frame when calculating average signal
85 * strength for Beacon frames received in the current BSS. This must be
86 * between 1 and 15.
87 */
88#define IEEE80211_SIGNAL_AVE_WEIGHT 3
89
391a200a
JM		 90/*
91 * How many Beacon frames need to have been used in average signal strength
92 * before starting to indicate signal change events.
93 */
94#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
95
ca386f31
JB		 96/*
97 * We can have multiple work items (and connection probing)
98 * scheduling this timer, but we need to take care to only
99 * reschedule it when it should fire _earlier_ than it was
100 * asked for before, or if it's not pending right now. This
101 * function ensures that. Note that it then is required to
102 * run this function for all timeouts after the first one
103 * has happened -- the work that runs from this timer will
104 * do that.
105 */
8d61ffa5
JB		 106static void run_again(struct ieee80211_sub_if_data *sdata,
107 unsigned long timeout)
ca386f31 108{
8d61ffa5 109 sdata_assert_lock(sdata);
ca386f31 110
8d61ffa5
JB		 111 if (!timer_pending(&sdata->u.mgd.timer) ||
112 time_before(timeout, sdata->u.mgd.timer.expires))
113 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 114}
115
d3a910a8 116void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 117{
c1288b12 118 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 119 return;
120
7eeff74c
JB		 121 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
122 return;
123
b291ba11 124 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 125 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 126}
127
be099e82
LR		 128void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
129{
0c699c3a
LR		 130 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
131
8628172f
SG		 132 if (unlikely(!sdata->u.mgd.associated))
133 return;
134
448cd2e2
EP		 135 ifmgd->probe_send_count = 0;
136
be099e82
LR		 137 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
138 return;
139
140 mod_timer(&sdata->u.mgd.conn_mon_timer,
141 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
142}
143
5484e237 144static int ecw2cw(int ecw)
60f8b39c 145{
5484e237 146 return (1 << ecw) - 1;
60f8b39c
JB		 147}
148
6565ec9b
JB		 149static u32
150ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
151 struct ieee80211_supported_band *sband,
152 struct ieee80211_channel *channel,
53b954ee 153 const struct ieee80211_ht_cap *ht_cap,
6565ec9b
JB		 154 const struct ieee80211_ht_operation *ht_oper,
155 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 156 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 157{
5cdaed1e 158 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b 159 struct cfg80211_chan_def vht_chandef;
179b8fc7 160 struct ieee80211_sta_ht_cap sta_ht_cap;
6565ec9b
JB		 161 u32 ht_cfreq, ret;
162
179b8fc7
CRI		 163 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
164 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
165
6565ec9b
JB		 166 chandef->chan = channel;
167 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
168 chandef->center_freq1 = channel->center_freq;
169 chandef->center_freq2 = 0;
170
179b8fc7 171 if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) {
6565ec9b
JB		 172 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
173 goto out;
174 }
175
176 chandef->width = NL80211_CHAN_WIDTH_20;
177
53b954ee
EP		 178 if (!(ht_cap->cap_info &
179 cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) {
f3000e1b 180 ret = IEEE80211_STA_DISABLE_40MHZ;
7e6225a1 181 vht_chandef = *chandef;
53b954ee
EP		 182 goto out;
183 }
184
6565ec9b
JB		 185 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
186 channel->band);
187 /* check that channel matches the right operating channel */
5cdaed1e 188 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 189 /*
190 * It's possible that some APs are confused here;
191 * Netgear WNDR3700 sometimes reports 4 higher than
192 * the actual channel in association responses, but
193 * since we look at probe response/beacon data here
194 * it should be OK.
195 */
5cdaed1e
JB		 196 sdata_info(sdata,
197 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
198 channel->center_freq, ht_cfreq,
199 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 200 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
201 goto out;
202 }
203
204 /* check 40 MHz support, if we have it */
179b8fc7 205 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
6565ec9b
JB		 206 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
207 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
208 chandef->width = NL80211_CHAN_WIDTH_40;
209 chandef->center_freq1 += 10;
210 break;
211 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
212 chandef->width = NL80211_CHAN_WIDTH_40;
213 chandef->center_freq1 -= 10;
214 break;
215 }
216 } else {
217 /* 40 MHz (and 80 MHz) must be supported for VHT */
218 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 219 /* also mark 40 MHz disabled */
220 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 221 goto out;
222 }
223
224 if (!vht_oper || !sband->vht_cap.vht_supported) {
225 ret = IEEE80211_STA_DISABLE_VHT;
226 goto out;
227 }
228
229 vht_chandef.chan = channel;
230 vht_chandef.center_freq1 =
231 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
232 channel->band);
233 vht_chandef.center_freq2 = 0;
234
6565ec9b
JB		 235 switch (vht_oper->chan_width) {
236 case IEEE80211_VHT_CHANWIDTH_USE_HT:
237 vht_chandef.width = chandef->width;
cb664981 238 vht_chandef.center_freq1 = chandef->center_freq1;
6565ec9b
JB		 239 break;
240 case IEEE80211_VHT_CHANWIDTH_80MHZ:
241 vht_chandef.width = NL80211_CHAN_WIDTH_80;
242 break;
243 case IEEE80211_VHT_CHANWIDTH_160MHZ:
244 vht_chandef.width = NL80211_CHAN_WIDTH_160;
245 break;
246 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
247 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 248 vht_chandef.center_freq2 =
249 ieee80211_channel_to_frequency(
250 vht_oper->center_freq_seg2_idx,
251 channel->band);
6565ec9b
JB		 252 break;
253 default:
5cdaed1e 254 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 255 sdata_info(sdata,
256 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
257 vht_oper->chan_width);
6565ec9b
JB		 258 ret = IEEE80211_STA_DISABLE_VHT;
259 goto out;
260 }
261
262 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 263 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 264 sdata_info(sdata,
265 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 266 ret = IEEE80211_STA_DISABLE_VHT;
267 goto out;
268 }
269
270 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
271 ret = 0;
272 goto out;
273 }
274
275 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 276 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 277 sdata_info(sdata,
278 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 279 ret = IEEE80211_STA_DISABLE_VHT;
280 goto out;
281 }
282
283 *chandef = vht_chandef;
284
285 ret = 0;
286
287out:
963a1852
JB		 288 /*
289 * When tracking the current AP, don't do any further checks if the
290 * new chandef is identical to the one we're currently using for the
291 * connection. This keeps us from playing ping-pong with regulatory,
292 * without it the following can happen (for example):
293 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
294 * - AP advertises regdom US
295 * - CRDA loads regdom US with 80 MHz prohibited (old database)
296 * - the code below detects an unsupported channel, downgrades, and
297 * we disconnect from the AP in the caller
298 * - disconnect causes CRDA to reload world regdomain and the game
299 * starts anew.
300 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
301 *
302 * It seems possible that there are still scenarios with CSA or real
303 * bandwidth changes where a this could happen, but those cases are
304 * less common and wouldn't completely prevent using the AP.
305 */
306 if (tracking &&
307 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
308 return ret;
309
586e01ed
JB		 310 /* don't print the message below for VHT mismatch if VHT is disabled */
311 if (ret & IEEE80211_STA_DISABLE_VHT)
312 vht_chandef = *chandef;
313
ddfe49b4
JB		 314 /*
315 * Ignore the DISABLED flag when we're already connected and only
316 * tracking the APs beacon for bandwidth changes - otherwise we
317 * might get disconnected here if we connect to an AP, update our
318 * regulatory information based on the AP's country IE and the
319 * information we have is wrong/outdated and disables the channel
320 * that we're actually using for the connection to the AP.
321 */
6565ec9b 322 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 323 tracking ? 0 :
324 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 325 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
326 ret = IEEE80211_STA_DISABLE_HT |
327 IEEE80211_STA_DISABLE_VHT;
b56e4b85 328 break;
6565ec9b
JB		 329 }
330
e6b7cde4 331 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 332 }
333
5cdaed1e 334 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 335 sdata_info(sdata,
336 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
337
338 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
339 return ret;
340}
341
30eb1dc2
JB		 342static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
343 struct sta_info *sta,
53b954ee 344 const struct ieee80211_ht_cap *ht_cap,
30eb1dc2
JB		 345 const struct ieee80211_ht_operation *ht_oper,
346 const struct ieee80211_vht_operation *vht_oper,
347 const u8 *bssid, u32 *changed)
d5522e03
JB		 348{
349 struct ieee80211_local *local = sdata->local;
30eb1dc2 350 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 351 struct ieee80211_supported_band *sband;
55de908a 352 struct ieee80211_channel *chan;
30eb1dc2 353 struct cfg80211_chan_def chandef;
9ed6bcce 354 u16 ht_opmode;
30eb1dc2
JB		 355 u32 flags;
356 enum ieee80211_sta_rx_bandwidth new_sta_bw;
357 int ret;
d5522e03 358
30eb1dc2
JB		 359 /* if HT was/is disabled, don't track any bandwidth changes */
360 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 361 return 0;
362
30eb1dc2
JB		 363 /* don't check VHT if we associated as non-VHT station */
364 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
365 vht_oper = NULL;
366
367 if (WARN_ON_ONCE(!sta))
368 return -EINVAL;
369
017b45bb
AA		 370 /*
371 * if bss configuration changed store the new one -
372 * this may be applicable even if channel is identical
373 */
374 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
375 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
376 *changed |= BSS_CHANGED_HT;
377 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
378 }
379
f2d9330e 380 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 381 sband = local->hw.wiphy->bands[chan->band];
d5522e03 382
30eb1dc2 383 /* calculate new channel (type) based on HT/VHT operation IEs */
53b954ee
EP		 384 flags = ieee80211_determine_chantype(sdata, sband, chan,
385 ht_cap, ht_oper, vht_oper,
386 &chandef, true);
30eb1dc2
JB		 387
388 /*
389 * Downgrade the new channel if we associated with restricted
390 * capabilities. For example, if we associated as a 20 MHz STA
391 * to a 40 MHz AP (due to regulatory, capabilities or config
392 * reasons) then switching to a 40 MHz channel now won't do us
393 * any good -- we couldn't use it with the AP.
394 */
395 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
396 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 397 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 398 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
399 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 400 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 401 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
402 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 403 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 404
405 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
406 return 0;
407
408 sdata_info(sdata,
409 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
410 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
411 chandef.center_freq1, chandef.center_freq2);
412
413 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
414 IEEE80211_STA_DISABLE_VHT |
415 IEEE80211_STA_DISABLE_40MHZ |
416 IEEE80211_STA_DISABLE_80P80MHZ |
417 IEEE80211_STA_DISABLE_160MHZ)) ||
418 !cfg80211_chandef_valid(&chandef)) {
419 sdata_info(sdata,
420 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
421 ifmgd->bssid);
422 return -EINVAL;
423 }
424
425 switch (chandef.width) {
426 case NL80211_CHAN_WIDTH_20_NOHT:
427 case NL80211_CHAN_WIDTH_20:
428 new_sta_bw = IEEE80211_STA_RX_BW_20;
429 break;
4bf88530 430 case NL80211_CHAN_WIDTH_40:
30eb1dc2 431 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 432 break;
30eb1dc2
JB		 433 case NL80211_CHAN_WIDTH_80:
434 new_sta_bw = IEEE80211_STA_RX_BW_80;
435 break;
436 case NL80211_CHAN_WIDTH_80P80:
437 case NL80211_CHAN_WIDTH_160:
438 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 439 break;
30eb1dc2
JB		 440 default:
441 return -EINVAL;
64f68e5d 442 }
d5522e03 443
30eb1dc2
JB		 444 if (new_sta_bw > sta->cur_max_bandwidth)
445 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 446
30eb1dc2
JB		 447 if (new_sta_bw < sta->sta.bandwidth) {
448 sta->sta.bandwidth = new_sta_bw;
449 rate_control_rate_update(local, sband, sta,
450 IEEE80211_RC_BW_CHANGED);
451 }
64f68e5d 452
30eb1dc2
JB		 453 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
454 if (ret) {
455 sdata_info(sdata,
456 "AP %pM changed bandwidth to incompatible one - disconnect\n",
457 ifmgd->bssid);
458 return ret;
459 }
7cc44ed4 460
30eb1dc2
JB		 461 if (new_sta_bw > sta->sta.bandwidth) {
462 sta->sta.bandwidth = new_sta_bw;
463 rate_control_rate_update(local, sband, sta,
464 IEEE80211_RC_BW_CHANGED);
0aaffa9b 465 }
d5522e03 466
30eb1dc2 467 return 0;
d5522e03
JB		 468}
469
9c6bd790
JB		 470/* frame sending functions */
471
66e67e41 472static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 473 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 474 struct ieee80211_supported_band *sband,
475 struct ieee80211_channel *channel,
476 enum ieee80211_smps_mode smps)
477{
66e67e41
JB		 478 u8 *pos;
479 u32 flags = channel->flags;
480 u16 cap;
481 struct ieee80211_sta_ht_cap ht_cap;
482
483 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
484
66e67e41
JB		 485 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
486 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
487
66e67e41
JB		 488 /* determine capability flags */
489 cap = ht_cap.cap;
490
9dde6423 491 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 492 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
493 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
494 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
495 cap &= ~IEEE80211_HT_CAP_SGI_40;
496 }
497 break;
498 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
499 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
500 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
501 cap &= ~IEEE80211_HT_CAP_SGI_40;
502 }
503 break;
504 }
505
24398e39
JB		 506 /*
507 * If 40 MHz was disabled associate as though we weren't
508 * capable of 40 MHz -- some broken APs will never fall
509 * back to trying to transmit in 20 MHz.
510 */
511 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
512 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
513 cap &= ~IEEE80211_HT_CAP_SGI_40;
514 }
515
66e67e41
JB		 516 /* set SM PS mode properly */
517 cap &= ~IEEE80211_HT_CAP_SM_PS;
518 switch (smps) {
519 case IEEE80211_SMPS_AUTOMATIC:
520 case IEEE80211_SMPS_NUM_MODES:
521 WARN_ON(1);
522 case IEEE80211_SMPS_OFF:
523 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
524 IEEE80211_HT_CAP_SM_PS_SHIFT;
525 break;
526 case IEEE80211_SMPS_STATIC:
527 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
528 IEEE80211_HT_CAP_SM_PS_SHIFT;
529 break;
530 case IEEE80211_SMPS_DYNAMIC:
531 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
532 IEEE80211_HT_CAP_SM_PS_SHIFT;
533 break;
534 }
535
536 /* reserve and fill IE */
537 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
538 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
539}
540
d545daba
MP		 541static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
542 struct sk_buff *skb,
b08fbbd8
JB		 543 struct ieee80211_supported_band *sband,
544 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 545{
546 u8 *pos;
547 u32 cap;
548 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 549 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 550
551 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
552
553 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 554 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 555
556 /* determine capability flags */
557 cap = vht_cap.cap;
558
f2d9d270 559 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
575f0530
JB		 560 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
561
562 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
563 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
564 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
565 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
f2d9d270
JB		 566 }
567
568 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
569 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
575f0530 570 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
f2d9d270
JB		 571 }
572
b08fbbd8
JB		 573 /*
574 * Some APs apparently get confused if our capabilities are better
575 * than theirs, so restrict what we advertise in the assoc request.
576 */
577 if (!(ap_vht_cap->vht_cap_info &
578 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
579 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
580
c1cf6d4e
ES		 581 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
582
583 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
584 our_bf_sts = cap & mask;
585
586 if (ap_bf_sts < our_bf_sts) {
587 cap &= ~mask;
588 cap |= ap_bf_sts;
589 }
590
d545daba 591 /* reserve and fill IE */
d4950281 592 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 593 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
594}
595
66e67e41
JB		 596static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
597{
598 struct ieee80211_local *local = sdata->local;
599 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
600 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
601 struct sk_buff *skb;
602 struct ieee80211_mgmt *mgmt;
603 u8 *pos, qos_info;
604 size_t offset = 0, noffset;
2103dec1 605 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 606 u16 capab;
607 struct ieee80211_supported_band *sband;
55de908a
JB		 608 struct ieee80211_chanctx_conf *chanctx_conf;
609 struct ieee80211_channel *chan;
2103dec1 610 u32 rate_flags, rates = 0;
66e67e41 611
8d61ffa5 612 sdata_assert_lock(sdata);
66e67e41 613
55de908a
JB		 614 rcu_read_lock();
615 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
616 if (WARN_ON(!chanctx_conf)) {
617 rcu_read_unlock();
618 return;
619 }
4bf88530 620 chan = chanctx_conf->def.chan;
2103dec1 621 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 622 rcu_read_unlock();
623 sband = local->hw.wiphy->bands[chan->band];
2103dec1 624 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 625
626 if (assoc_data->supp_rates_len) {
627 /*
628 * Get all rates supported by the device and the AP as
629 * some APs don't like getting a superset of their rates
630 * in the association request (e.g. D-Link DAP 1353 in
631 * b-only mode)...
632 */
2103dec1
SW		 633 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
634 assoc_data->supp_rates,
635 assoc_data->supp_rates_len,
636 &rates);
66e67e41
JB		 637 } else {
638 /*
639 * In case AP not provide any supported rates information
640 * before association, we send information element(s) with
641 * all rates that we support.
642 */
2103dec1
SW		 643 rates_len = 0;
644 for (i = 0; i < sband->n_bitrates; i++) {
645 if ((rate_flags & sband->bitrates[i].flags)
646 != rate_flags)
647 continue;
648 rates |= BIT(i);
649 rates_len++;
650 }
66e67e41
JB		 651 }
652
653 skb = alloc_skb(local->hw.extra_tx_headroom +
654 sizeof(*mgmt) + /* bit too much but doesn't matter */
655 2 + assoc_data->ssid_len + /* SSID */
656 4 + rates_len + /* (extended) rates */
657 4 + /* power capability */
658 2 + 2 * sband->n_channels + /* supported channels */
659 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 660 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 661 assoc_data->ie_len + /* extra IEs */
662 9, /* WMM */
663 GFP_KERNEL);
664 if (!skb)
665 return;
666
667 skb_reserve(skb, local->hw.extra_tx_headroom);
668
669 capab = WLAN_CAPABILITY_ESS;
670
671 if (sband->band == IEEE80211_BAND_2GHZ) {
672 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
673 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
674 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
675 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
676 }
677
678 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
679 capab |= WLAN_CAPABILITY_PRIVACY;
680
681 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
682 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
683 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
684
cd2f5dd7
AK		 685 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
686 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
687
66e67e41
JB		 688 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
689 memset(mgmt, 0, 24);
690 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
691 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
692 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
693
694 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
695 skb_put(skb, 10);
696 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
697 IEEE80211_STYPE_REASSOC_REQ);
698 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
699 mgmt->u.reassoc_req.listen_interval =
700 cpu_to_le16(local->hw.conf.listen_interval);
701 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
702 ETH_ALEN);
703 } else {
704 skb_put(skb, 4);
705 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
706 IEEE80211_STYPE_ASSOC_REQ);
707 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
708 mgmt->u.assoc_req.listen_interval =
709 cpu_to_le16(local->hw.conf.listen_interval);
710 }
711
712 /* SSID */
713 pos = skb_put(skb, 2 + assoc_data->ssid_len);
714 *pos++ = WLAN_EID_SSID;
715 *pos++ = assoc_data->ssid_len;
716 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
717
718 /* add all rates which were marked to be used above */
719 supp_rates_len = rates_len;
720 if (supp_rates_len > 8)
721 supp_rates_len = 8;
722
723 pos = skb_put(skb, supp_rates_len + 2);
724 *pos++ = WLAN_EID_SUPP_RATES;
725 *pos++ = supp_rates_len;
726
727 count = 0;
728 for (i = 0; i < sband->n_bitrates; i++) {
729 if (BIT(i) & rates) {
2103dec1
SW		 730 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
731 5 * (1 << shift));
732 *pos++ = (u8) rate;
66e67e41
JB		 733 if (++count == 8)
734 break;
735 }
736 }
737
738 if (rates_len > count) {
739 pos = skb_put(skb, rates_len - count + 2);
740 *pos++ = WLAN_EID_EXT_SUPP_RATES;
741 *pos++ = rates_len - count;
742
743 for (i++; i < sband->n_bitrates; i++) {
744 if (BIT(i) & rates) {
2103dec1
SW		 745 int rate;
746 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
747 5 * (1 << shift));
748 *pos++ = (u8) rate;
66e67e41
JB		 749 }
750 }
751 }
752
cd2f5dd7
AK		 753 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
754 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
66e67e41
JB		 755 pos = skb_put(skb, 4);
756 *pos++ = WLAN_EID_PWR_CAPABILITY;
757 *pos++ = 2;
758 *pos++ = 0; /* min tx power */
0430c883
SW		 759 /* max tx power */
760 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
cd2f5dd7 761 }
66e67e41 762
cd2f5dd7 763 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
66e67e41
JB		 764 /* TODO: get this in reg domain format */
765 pos = skb_put(skb, 2 * sband->n_channels + 2);
766 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
767 *pos++ = 2 * sband->n_channels;
768 for (i = 0; i < sband->n_channels; i++) {
769 *pos++ = ieee80211_frequency_to_channel(
770 sband->channels[i].center_freq);
771 *pos++ = 1; /* one channel in the subband*/
772 }
773 }
774
775 /* if present, add any custom IEs that go before HT */
b3f51e94 776 if (assoc_data->ie_len) {
66e67e41
JB		 777 static const u8 before_ht[] = {
778 WLAN_EID_SSID,
779 WLAN_EID_SUPP_RATES,
780 WLAN_EID_EXT_SUPP_RATES,
781 WLAN_EID_PWR_CAPABILITY,
782 WLAN_EID_SUPPORTED_CHANNELS,
783 WLAN_EID_RSN,
784 WLAN_EID_QOS_CAPA,
785 WLAN_EID_RRM_ENABLED_CAPABILITIES,
786 WLAN_EID_MOBILITY_DOMAIN,
8ed28747
JB		 787 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
788 WLAN_EID_RIC_DATA, /* reassoc only */
66e67e41
JB		 789 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
790 };
8ed28747
JB		 791 static const u8 after_ric[] = {
792 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
793 WLAN_EID_HT_CAPABILITY,
794 WLAN_EID_BSS_COEX_2040,
795 WLAN_EID_EXT_CAPABILITY,
796 WLAN_EID_QOS_TRAFFIC_CAPA,
797 WLAN_EID_TIM_BCAST_REQ,
798 WLAN_EID_INTERWORKING,
799 /* 60GHz doesn't happen right now */
800 WLAN_EID_VHT_CAPABILITY,
801 WLAN_EID_OPMODE_NOTIF,
802 };
803
804 noffset = ieee80211_ie_split_ric(assoc_data->ie,
805 assoc_data->ie_len,
806 before_ht,
807 ARRAY_SIZE(before_ht),
808 after_ric,
809 ARRAY_SIZE(after_ric),
810 offset);
66e67e41
JB		 811 pos = skb_put(skb, noffset - offset);
812 memcpy(pos, assoc_data->ie + offset, noffset - offset);
813 offset = noffset;
814 }
815
f2d9d270
JB		 816 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
817 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
818 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
819
a8243b72 820 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 821 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 822 sband, chan, sdata->smps_mode);
66e67e41 823
3de3802c
JB		 824 /* if present, add any custom IEs that go before VHT */
825 if (assoc_data->ie_len) {
826 static const u8 before_vht[] = {
827 WLAN_EID_SSID,
828 WLAN_EID_SUPP_RATES,
829 WLAN_EID_EXT_SUPP_RATES,
830 WLAN_EID_PWR_CAPABILITY,
831 WLAN_EID_SUPPORTED_CHANNELS,
832 WLAN_EID_RSN,
833 WLAN_EID_QOS_CAPA,
834 WLAN_EID_RRM_ENABLED_CAPABILITIES,
835 WLAN_EID_MOBILITY_DOMAIN,
836 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
837 WLAN_EID_HT_CAPABILITY,
838 WLAN_EID_BSS_COEX_2040,
839 WLAN_EID_EXT_CAPABILITY,
840 WLAN_EID_QOS_TRAFFIC_CAPA,
841 WLAN_EID_TIM_BCAST_REQ,
842 WLAN_EID_INTERWORKING,
843 };
8ed28747
JB		 844
845 /* RIC already taken above, so no need to handle here anymore */
3de3802c
JB		 846 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
847 before_vht, ARRAY_SIZE(before_vht),
848 offset);
849 pos = skb_put(skb, noffset - offset);
850 memcpy(pos, assoc_data->ie + offset, noffset - offset);
851 offset = noffset;
852 }
853
d545daba 854 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 855 ieee80211_add_vht_ie(sdata, skb, sband,
856 &assoc_data->ap_vht_cap);
d545daba 857
66e67e41 858 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 859 if (assoc_data->ie_len) {
66e67e41
JB		 860 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
861 assoc_data->ie_len,
862 offset);
863 pos = skb_put(skb, noffset - offset);
864 memcpy(pos, assoc_data->ie + offset, noffset - offset);
865 offset = noffset;
866 }
867
76f0303d
JB		 868 if (assoc_data->wmm) {
869 if (assoc_data->uapsd) {
dc41e4d4
EP		 870 qos_info = ifmgd->uapsd_queues;
871 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 872 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
873 } else {
874 qos_info = 0;
875 }
876
40b861a0 877 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
66e67e41
JB		 878 }
879
880 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 881 if (assoc_data->ie_len) {
66e67e41
JB		 882 noffset = assoc_data->ie_len;
883 pos = skb_put(skb, noffset - offset);
884 memcpy(pos, assoc_data->ie + offset, noffset - offset);
885 }
886
a1845fc7
JB		 887 drv_mgd_prepare_tx(local, sdata);
888
66e67e41 889 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 890 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
891 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
892 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 893 ieee80211_tx_skb(sdata, skb);
894}
895
572e0012
KV		 896void ieee80211_send_pspoll(struct ieee80211_local *local,
897 struct ieee80211_sub_if_data *sdata)
898{
572e0012
KV		 899 struct ieee80211_pspoll *pspoll;
900 struct sk_buff *skb;
572e0012 901
d8cd189e
KV		 902 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
903 if (!skb)
572e0012 904 return;
572e0012 905
d8cd189e
KV		 906 pspoll = (struct ieee80211_pspoll *) skb->data;
907 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 908
62ae67be
JB		 909 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
910 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 911}
912
965bedad
JB		 913void ieee80211_send_nullfunc(struct ieee80211_local *local,
914 struct ieee80211_sub_if_data *sdata,
915 int powersave)
916{
917 struct sk_buff *skb;
d8cd189e 918 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 919 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 920
d8cd189e
KV		 921 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
922 if (!skb)
965bedad 923 return;
965bedad 924
d8cd189e 925 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 926 if (powersave)
d8cd189e 927 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 928
6c17b77b
SF		 929 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
930 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 931
932 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
933 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
934
392b9ffb 935 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 936 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
937
62ae67be 938 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 939}
940
d524215f
FF		 941static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
942 struct ieee80211_sub_if_data *sdata)
943{
944 struct sk_buff *skb;
945 struct ieee80211_hdr *nullfunc;
946 __le16 fc;
947
948 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
949 return;
950
951 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 952 if (!skb)
d524215f 953 return;
d15b8459 954
d524215f
FF		 955 skb_reserve(skb, local->hw.extra_tx_headroom);
956
957 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
958 memset(nullfunc, 0, 30);
959 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
960 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
961 nullfunc->frame_control = fc;
962 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
963 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
964 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
965 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
966
967 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
968 ieee80211_tx_skb(sdata, skb);
969}
970
cc32abd4
JB		 971/* spectrum management related things */
972static void ieee80211_chswitch_work(struct work_struct *work)
973{
974 struct ieee80211_sub_if_data *sdata =
975 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 976 struct ieee80211_local *local = sdata->local;
cc32abd4 977 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575 978 int ret;
cc32abd4 979
9607e6b6 980 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 981 return;
982
8d61ffa5 983 sdata_lock(sdata);
4c3ebc56
MK		 984 mutex_lock(&local->mtx);
985 mutex_lock(&local->chanctx_mtx);
986
77fdaa12
JB		 987 if (!ifmgd->associated)
988 goto out;
cc32abd4 989
4c3ebc56
MK		 990 if (!sdata->vif.csa_active)
991 goto out;
992
993 /*
994 * using reservation isn't immediate as it may be deferred until later
995 * with multi-vif. once reservation is complete it will re-schedule the
996 * work with no reserved_chanctx so verify chandef to check if it
997 * completed successfully
998 */
999
1000 if (sdata->reserved_chanctx) {
1001 /*
1002 * with multi-vif csa driver may call ieee80211_csa_finish()
1003 * many times while waiting for other interfaces to use their
1004 * reservations
1005 */
1006 if (sdata->reserved_ready)
1007 goto out;
1008
1009 ret = ieee80211_vif_use_reserved_context(sdata);
1010 if (ret) {
1011 sdata_info(sdata,
1012 "failed to use reserved channel context, disconnecting (err=%d)\n",
1013 ret);
1014 ieee80211_queue_work(&sdata->local->hw,
1015 &ifmgd->csa_connection_drop_work);
1016 goto out;
1017 }
1018
1019 goto out;
1020 }
1021
1022 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1023 &sdata->csa_chandef)) {
7578d575 1024 sdata_info(sdata,
4c3ebc56 1025 "failed to finalize channel switch, disconnecting\n");
7578d575
AN		 1026 ieee80211_queue_work(&sdata->local->hw,
1027 &ifmgd->csa_connection_drop_work);
1028 goto out;
1029 }
675a0b04 1030
cc32abd4 1031 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 1032 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 1033
0c21e632
LC		 1034 ifmgd->csa_waiting_bcn = true;
1035
1036 ieee80211_sta_reset_beacon_monitor(sdata);
1037 ieee80211_sta_reset_conn_monitor(sdata);
1038
1039out:
1040 mutex_unlock(&local->chanctx_mtx);
1041 mutex_unlock(&local->mtx);
1042 sdata_unlock(sdata);
1043}
1044
1045static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1046{
1047 struct ieee80211_local *local = sdata->local;
1048 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1049 int ret;
1050
1051 sdata_assert_lock(sdata);
1052
1053 WARN_ON(!sdata->vif.csa_active);
4c3ebc56 1054
a46992b4
LC		 1055 if (sdata->csa_block_tx) {
1056 ieee80211_wake_vif_queues(local, sdata,
1057 IEEE80211_QUEUE_STOP_REASON_CSA);
1058 sdata->csa_block_tx = false;
1059 }
7578d575 1060
0c21e632
LC		 1061 sdata->vif.csa_active = false;
1062 ifmgd->csa_waiting_bcn = false;
1063
f1d65583
LC		 1064 ret = drv_post_channel_switch(sdata);
1065 if (ret) {
1066 sdata_info(sdata,
1067 "driver post channel switch failed, disconnecting\n");
1068 ieee80211_queue_work(&local->hw,
1069 &ifmgd->csa_connection_drop_work);
0c21e632 1070 return;
f1d65583 1071 }
688b1ecf
LC		 1072
1073 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
cc32abd4
JB		 1074}
1075
5ce6e438
JB		 1076void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1077{
55de908a
JB		 1078 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1079 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1080
1081 trace_api_chswitch_done(sdata, success);
1082 if (!success) {
882a7c69
JB		 1083 sdata_info(sdata,
1084 "driver channel switch failed, disconnecting\n");
1085 ieee80211_queue_work(&sdata->local->hw,
1086 &ifmgd->csa_connection_drop_work);
1087 } else {
1088 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1089 }
5ce6e438
JB		 1090}
1091EXPORT_SYMBOL(ieee80211_chswitch_done);
1092
cc32abd4
JB		 1093static void ieee80211_chswitch_timer(unsigned long data)
1094{
1095 struct ieee80211_sub_if_data *sdata =
1096 (struct ieee80211_sub_if_data *) data;
5bb644a0 1097
9b7d72c1 1098 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1099}
1100
37799e52 1101static void
4a3cb702 1102ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
2ba45384
LC		 1103 u64 timestamp, u32 device_timestamp,
1104 struct ieee802_11_elems *elems,
04a161f4 1105 bool beacon)
cc32abd4 1106{
b4f286a1 1107 struct ieee80211_local *local = sdata->local;
cc32abd4 1108 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1109 struct cfg80211_bss *cbss = ifmgd->associated;
4c3ebc56 1110 struct ieee80211_chanctx_conf *conf;
55de908a 1111 struct ieee80211_chanctx *chanctx;
e6b7cde4 1112 enum ieee80211_band current_band;
c0f17eb9 1113 struct ieee80211_csa_ie csa_ie;
6d027bcc 1114 struct ieee80211_channel_switch ch_switch;
e6b7cde4 1115 int res;
cc32abd4 1116
8d61ffa5 1117 sdata_assert_lock(sdata);
77fdaa12 1118
37799e52 1119 if (!cbss)
cc32abd4
JB		 1120 return;
1121
b4f286a1 1122 if (local->scanning)
cc32abd4
JB		 1123 return;
1124
37799e52 1125 /* disregard subsequent announcements if we are already processing */
3e2a0226 1126 if (sdata->vif.csa_active)
cc32abd4
JB		 1127 return;
1128
e6b7cde4 1129 current_band = cbss->channel->band;
c0f17eb9 1130 memset(&csa_ie, 0, sizeof(csa_ie));
84469a45 1131 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
e6b7cde4 1132 ifmgd->flags,
c0f17eb9 1133 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1134 if (res < 0)
b4f286a1 1135 ieee80211_queue_work(&local->hw,
882a7c69 1136 &ifmgd->csa_connection_drop_work);
e6b7cde4 1137 if (res)
cc32abd4 1138 return;
cd64f2a9 1139
c0f17eb9 1140 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1141 IEEE80211_CHAN_DISABLED)) {
1142 sdata_info(sdata,
1143 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1144 ifmgd->associated->bssid,
c0f17eb9
CYY		 1145 csa_ie.chandef.chan->center_freq,
1146 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1147 csa_ie.chandef.center_freq2);
85220d71
JB		 1148 ieee80211_queue_work(&local->hw,
1149 &ifmgd->csa_connection_drop_work);
1150 return;
1151 }
1152
4c3ebc56 1153 mutex_lock(&local->mtx);
7578d575 1154 mutex_lock(&local->chanctx_mtx);
4c3ebc56
MK		 1155 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1156 lockdep_is_held(&local->chanctx_mtx));
1157 if (!conf) {
1158 sdata_info(sdata,
1159 "no channel context assigned to vif?, disconnecting\n");
f3b0bbb3 1160 goto drop_connection;
4c3ebc56
MK		 1161 }
1162
1163 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1164
0f791eb4
LC		 1165 if (local->use_chanctx &&
1166 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1167 sdata_info(sdata,
1168 "driver doesn't support chan-switch with channel contexts\n");
f3b0bbb3 1169 goto drop_connection;
55de908a
JB		 1170 }
1171
6d027bcc
LC		 1172 ch_switch.timestamp = timestamp;
1173 ch_switch.device_timestamp = device_timestamp;
1174 ch_switch.block_tx = csa_ie.mode;
1175 ch_switch.chandef = csa_ie.chandef;
1176 ch_switch.count = csa_ie.count;
1177
1178 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1179 sdata_info(sdata,
1180 "preparing for channel switch failed, disconnecting\n");
f3b0bbb3 1181 goto drop_connection;
6d027bcc
LC		 1182 }
1183
4c3ebc56
MK		 1184 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1185 chanctx->mode, false);
1186 if (res) {
55de908a 1187 sdata_info(sdata,
4c3ebc56
MK		 1188 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1189 res);
f3b0bbb3 1190 goto drop_connection;
55de908a 1191 }
b4f286a1 1192 mutex_unlock(&local->chanctx_mtx);
55de908a 1193
c46a73f3 1194 sdata->vif.csa_active = true;
4c3ebc56 1195 sdata->csa_chandef = csa_ie.chandef;
59af6928 1196 sdata->csa_block_tx = csa_ie.mode;
55de908a 1197
59af6928 1198 if (sdata->csa_block_tx)
a46992b4
LC		 1199 ieee80211_stop_vif_queues(local, sdata,
1200 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1201 mutex_unlock(&local->mtx);
57eebdf3 1202
2f457293
LC		 1203 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1204 csa_ie.count);
1205
b4f286a1 1206 if (local->ops->channel_switch) {
5ce6e438 1207 /* use driver's channel switch callback */
0f791eb4 1208 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1209 return;
1210 }
1211
1212 /* channel switch handled in software */
c0f17eb9 1213 if (csa_ie.count <= 1)
b4f286a1 1214 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1215 else
cc32abd4 1216 mod_timer(&ifmgd->chswitch_timer,
ff1e417c
LC		 1217 TU_TO_EXP_TIME((csa_ie.count - 1) *
1218 cbss->beacon_interval));
f3b0bbb3
JB		 1219 return;
1220 drop_connection:
1221 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1222 mutex_unlock(&local->chanctx_mtx);
1223 mutex_unlock(&local->mtx);
cc32abd4
JB		 1224}
1225
24a4e400
SG		 1226static bool
1227ieee80211_find_80211h_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,
1231 int *chan_pwr, int *pwr_reduction)
cc32abd4 1232{
04b7b2ff
JB		 1233 struct ieee80211_country_ie_triplet *triplet;
1234 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1235 int i, chan_increment;
04b7b2ff 1236 bool have_chan_pwr = false;
cc32abd4 1237
04b7b2ff
JB		 1238 /* Invalid IE */
1239 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1240 return false;
cc32abd4 1241
04b7b2ff
JB		 1242 triplet = (void *)(country_ie + 3);
1243 country_ie_len -= 3;
1244
1245 switch (channel->band) {
1246 default:
1247 WARN_ON_ONCE(1);
1248 /* fall through */
1249 case IEEE80211_BAND_2GHZ:
1250 case IEEE80211_BAND_60GHZ:
1251 chan_increment = 1;
1252 break;
1253 case IEEE80211_BAND_5GHZ:
1254 chan_increment = 4;
1255 break;
cc32abd4 1256 }
04b7b2ff
JB		 1257
1258 /* find channel */
1259 while (country_ie_len >= 3) {
1260 u8 first_channel = triplet->chans.first_channel;
1261
1262 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1263 goto next;
1264
1265 for (i = 0; i < triplet->chans.num_channels; i++) {
1266 if (first_channel + i * chan_increment == chan) {
1267 have_chan_pwr = true;
24a4e400 1268 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1269 break;
1270 }
1271 }
1272 if (have_chan_pwr)
1273 break;
1274
1275 next:
1276 triplet++;
1277 country_ie_len -= 3;
1278 }
1279
a5fee9cb 1280 if (have_chan_pwr && pwr_constr_elem)
24a4e400 1281 *pwr_reduction = *pwr_constr_elem;
a5fee9cb
MB		 1282 else
1283 *pwr_reduction = 0;
1284
24a4e400
SG		 1285 return have_chan_pwr;
1286}
1287
c8d65917
SG		 1288static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1289 struct ieee80211_channel *channel,
1290 const u8 *cisco_dtpc_ie,
1291 int *pwr_level)
1292{
1293 /* From practical testing, the first data byte of the DTPC element
1294 * seems to contain the requested dBm level, and the CLI on Cisco
1295 * APs clearly state the range is -127 to 127 dBm, which indicates
1296 * a signed byte, although it seemingly never actually goes negative.
1297 * The other byte seems to always be zero.
1298 */
1299 *pwr_level = (__s8)cisco_dtpc_ie[4];
1300}
1301
24a4e400
SG		 1302static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1303 struct ieee80211_channel *channel,
1304 struct ieee80211_mgmt *mgmt,
1305 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1306 const u8 *pwr_constr_ie,
1307 const u8 *cisco_dtpc_ie)
24a4e400 1308{
c8d65917
SG		 1309 bool has_80211h_pwr = false, has_cisco_pwr = false;
1310 int chan_pwr = 0, pwr_reduction_80211h = 0;
1311 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1312 int new_ap_level;
a5fee9cb 1313 __le16 capab = mgmt->u.probe_resp.capab_info;
04b7b2ff 1314
a5fee9cb
MB		 1315 if (country_ie &&
1316 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1317 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
24a4e400
SG		 1318 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1319 sdata, channel, country_ie, country_ie_len,
1320 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1321 pwr_level_80211h =
1322 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1323 }
1324
1325 if (cisco_dtpc_ie) {
1326 ieee80211_find_cisco_dtpc(
1327 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1328 has_cisco_pwr = true;
24a4e400 1329 }
04b7b2ff 1330
c8d65917 1331 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1332 return 0;
04b7b2ff 1333
c8d65917
SG		 1334 /* If we have both 802.11h and Cisco DTPC, apply both limits
1335 * by picking the smallest of the two power levels advertised.
1336 */
1337 if (has_80211h_pwr &&
1338 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1339 sdata_info(sdata,
1340 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1341 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1342 sdata->u.mgd.bssid);
1343 new_ap_level = pwr_level_80211h;
1344 } else { /* has_cisco_pwr is always true here. */
1345 sdata_info(sdata,
1346 "Limiting TX power to %d dBm as advertised by %pM\n",
1347 pwr_level_cisco, sdata->u.mgd.bssid);
1348 new_ap_level = pwr_level_cisco;
1349 }
04b7b2ff 1350
1ea6f9c0
JB		 1351 if (sdata->ap_power_level == new_ap_level)
1352 return 0;
04b7b2ff 1353
1ea6f9c0
JB		 1354 sdata->ap_power_level = new_ap_level;
1355 if (__ieee80211_recalc_txpower(sdata))
1356 return BSS_CHANGED_TXPOWER;
1357 return 0;
cc32abd4
JB		 1358}
1359
965bedad
JB		 1360/* powersave */
1361static void ieee80211_enable_ps(struct ieee80211_local *local,
1362 struct ieee80211_sub_if_data *sdata)
1363{
1364 struct ieee80211_conf *conf = &local->hw.conf;
1365
d5edaedc
JB		 1366 /*
1367 * If we are scanning right now then the parameters will
1368 * take effect when scan finishes.
1369 */
fbe9c429 1370 if (local->scanning)
d5edaedc
JB		 1371 return;
1372
965bedad
JB		 1373 if (conf->dynamic_ps_timeout > 0 &&
1374 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1375 mod_timer(&local->dynamic_ps_timer, jiffies +
1376 msecs_to_jiffies(conf->dynamic_ps_timeout));
1377 } else {
1378 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1379 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1380
2a13052f
JO		 1381 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1382 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1383 return;
1384
1385 conf->flags |= IEEE80211_CONF_PS;
1386 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1387 }
1388}
1389
1390static void ieee80211_change_ps(struct ieee80211_local *local)
1391{
1392 struct ieee80211_conf *conf = &local->hw.conf;
1393
1394 if (local->ps_sdata) {
965bedad
JB		 1395 ieee80211_enable_ps(local, local->ps_sdata);
1396 } else if (conf->flags & IEEE80211_CONF_PS) {
1397 conf->flags &= ~IEEE80211_CONF_PS;
1398 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1399 del_timer_sync(&local->dynamic_ps_timer);
1400 cancel_work_sync(&local->dynamic_ps_enable_work);
1401 }
1402}
1403
808118cb
JY		 1404static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1405{
1406 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1407 struct sta_info *sta = NULL;
c2c98fde 1408 bool authorized = false;
808118cb
JY		 1409
1410 if (!mgd->powersave)
1411 return false;
1412
05cb9108
JB		 1413 if (mgd->broken_ap)
1414 return false;
1415
808118cb
JY		 1416 if (!mgd->associated)
1417 return false;
1418
392b9ffb 1419 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1420 return false;
1421
989c6505 1422 if (!mgd->have_beacon)
ce857888
AB		 1423 return false;
1424
808118cb
JY		 1425 rcu_read_lock();
1426 sta = sta_info_get(sdata, mgd->bssid);
1427 if (sta)
c2c98fde 1428 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1429 rcu_read_unlock();
1430
c2c98fde 1431 return authorized;
808118cb
JY		 1432}
1433
965bedad 1434/* need to hold RTNL or interface lock */
10f644a4 1435void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1436{
1437 struct ieee80211_sub_if_data *sdata, *found = NULL;
1438 int count = 0;
195e294d 1439 int timeout;
965bedad
JB		 1440
1441 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1442 local->ps_sdata = NULL;
1443 return;
1444 }
1445
1446 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1447 if (!ieee80211_sdata_running(sdata))
965bedad 1448 continue;
8c7914de
RM		 1449 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1450 /* If an AP vif is found, then disable PS
1451 * by setting the count to zero thereby setting
1452 * ps_sdata to NULL.
1453 */
1454 count = 0;
1455 break;
1456 }
965bedad
JB		 1457 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1458 continue;
1459 found = sdata;
1460 count++;
1461 }
1462
808118cb 1463 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1464 s32 beaconint_us;
1465
1466 if (latency < 0)
ed77134b 1467 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1468
1469 beaconint_us = ieee80211_tu_to_usec(
1470 found->vif.bss_conf.beacon_int);
1471
ff616381 1472 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1473 if (timeout < 0) {
1474 /*
ff616381
JO		 1475 * Go to full PSM if the user configures a very low
1476 * latency requirement.
0ab82b04
EP		 1477 * The 2000 second value is there for compatibility
1478 * until the PM_QOS_NETWORK_LATENCY is configured
1479 * with real values.
195e294d 1480 */
0ab82b04
EP		 1481 if (latency > (1900 * USEC_PER_MSEC) &&
1482 latency != (2000 * USEC_PER_SEC))
195e294d 1483 timeout = 0;
ff616381
JO		 1484 else
1485 timeout = 100;
195e294d 1486 }
09b85568 1487 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1488
04fe2037 1489 if (beaconint_us > latency) {
10f644a4 1490 local->ps_sdata = NULL;
04fe2037 1491 } else {
04fe2037 1492 int maxslp = 1;
826262c3 1493 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1494
1495 /* If the TIM IE is invalid, pretend the value is 1 */
1496 if (!dtimper)
1497 dtimper = 1;
1498 else if (dtimper > 1)
04fe2037
JB		 1499 maxslp = min_t(int, dtimper,
1500 latency / beaconint_us);
1501
9ccebe61 1502 local->hw.conf.max_sleep_period = maxslp;
56007a02 1503 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1504 local->ps_sdata = found;
04fe2037 1505 }
10f644a4 1506 } else {
965bedad 1507 local->ps_sdata = NULL;
10f644a4 1508 }
965bedad
JB		 1509
1510 ieee80211_change_ps(local);
1511}
1512
ab095877
EP		 1513void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1514{
1515 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1516
1517 if (sdata->vif.bss_conf.ps != ps_allowed) {
1518 sdata->vif.bss_conf.ps = ps_allowed;
1519 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1520 }
1521}
1522
965bedad
JB		 1523void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1524{
1525 struct ieee80211_local *local =
1526 container_of(work, struct ieee80211_local,
1527 dynamic_ps_disable_work);
1528
1529 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1530 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1531 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1532 }
1533
1534 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1535 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1536 IEEE80211_QUEUE_STOP_REASON_PS,
1537 false);
965bedad
JB		 1538}
1539
1540void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1541{
1542 struct ieee80211_local *local =
1543 container_of(work, struct ieee80211_local,
1544 dynamic_ps_enable_work);
1545 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1546 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1547 unsigned long flags;
1548 int q;
965bedad
JB		 1549
1550 /* can only happen when PS was just disabled anyway */
1551 if (!sdata)
1552 return;
1553
5e34069c
CL		 1554 ifmgd = &sdata->u.mgd;
1555
965bedad
JB		 1556 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1557 return;
1558
09b85568 1559 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1560 /* don't enter PS if TX frames are pending */
1561 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1562 mod_timer(&local->dynamic_ps_timer, jiffies +
1563 msecs_to_jiffies(
1564 local->hw.conf.dynamic_ps_timeout));
1565 return;
1566 }
77b7023a
AN		 1567
1568 /*
1569 * transmission can be stopped by others which leads to
1570 * dynamic_ps_timer expiry. Postpone the ps timer if it
1571 * is not the actual idle state.
1572 */
1573 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1574 for (q = 0; q < local->hw.queues; q++) {
1575 if (local->queue_stop_reasons[q]) {
1576 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1577 flags);
1578 mod_timer(&local->dynamic_ps_timer, jiffies +
1579 msecs_to_jiffies(
1580 local->hw.conf.dynamic_ps_timeout));
1581 return;
1582 }
1583 }
1584 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1585 }
1ddc2867 1586
375177bf 1587 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1588 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1589 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1590 mod_timer(&local->dynamic_ps_timer, jiffies +
1591 msecs_to_jiffies(
1592 local->hw.conf.dynamic_ps_timeout));
a1598383 1593 } else {
e8306f98
VN		 1594 ieee80211_send_nullfunc(local, sdata, 1);
1595 /* Flush to get the tx status of nullfunc frame */
3b24f4c6 1596 ieee80211_flush_queues(local, sdata, false);
e8306f98 1597 }
f3e85b9e
VN		 1598 }
1599
2a13052f
JO		 1600 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1601 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1602 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1603 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1604 local->hw.conf.flags |= IEEE80211_CONF_PS;
1605 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1606 }
965bedad
JB		 1607}
1608
1609void ieee80211_dynamic_ps_timer(unsigned long data)
1610{
1611 struct ieee80211_local *local = (void *) data;
1612
42935eca 1613 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1614}
1615
164eb02d
SW		 1616void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1617{
1618 struct delayed_work *delayed_work =
1619 container_of(work, struct delayed_work, work);
1620 struct ieee80211_sub_if_data *sdata =
1621 container_of(delayed_work, struct ieee80211_sub_if_data,
1622 dfs_cac_timer_work);
d2859df5 1623 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1624
34a3740d
JB		 1625 mutex_lock(&sdata->local->mtx);
1626 if (sdata->wdev.cac_started) {
1627 ieee80211_vif_release_channel(sdata);
1628 cfg80211_cac_event(sdata->dev, &chandef,
1629 NL80211_RADAR_CAC_FINISHED,
1630 GFP_KERNEL);
1631 }
1632 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1633}
1634
02219b3a
JB		 1635static bool
1636__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1637{
1638 struct ieee80211_local *local = sdata->local;
1639 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
cc72f6e2 1640 bool ret = false;
02219b3a
JB		 1641 int ac;
1642
1643 if (local->hw.queues < IEEE80211_NUM_ACS)
1644 return false;
1645
1646 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1647 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1648 int non_acm_ac;
1649 unsigned long now = jiffies;
1650
1651 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1652 tx_tspec->admitted_time &&
1653 time_after(now, tx_tspec->time_slice_start + HZ)) {
1654 tx_tspec->consumed_tx_time = 0;
1655 tx_tspec->time_slice_start = now;
1656
1657 if (tx_tspec->downgraded)
1658 tx_tspec->action =
1659 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1660 }
1661
1662 switch (tx_tspec->action) {
1663 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1664 /* take the original parameters */
1665 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1666 sdata_err(sdata,
1667 "failed to set TX queue parameters for queue %d\n",
1668 ac);
1669 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1670 tx_tspec->downgraded = false;
1671 ret = true;
1672 break;
1673 case TX_TSPEC_ACTION_DOWNGRADE:
1674 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1675 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1676 ret = true;
1677 break;
1678 }
1679 /* downgrade next lower non-ACM AC */
1680 for (non_acm_ac = ac + 1;
1681 non_acm_ac < IEEE80211_NUM_ACS;
1682 non_acm_ac++)
1683 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1684 break;
1685 /* The loop will result in using BK even if it requires
1686 * admission control, such configuration makes no sense
1687 * and we have to transmit somehow - the AC selection
1688 * does the same thing.
1689 */
1690 if (drv_conf_tx(local, sdata, ac,
1691 &sdata->tx_conf[non_acm_ac]))
1692 sdata_err(sdata,
1693 "failed to set TX queue parameters for queue %d\n",
1694 ac);
1695 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1696 ret = true;
1697 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1698 tx_tspec->time_slice_start + HZ - now + 1);
1699 break;
1700 case TX_TSPEC_ACTION_NONE:
1701 /* nothing now */
1702 break;
1703 }
1704 }
1705
1706 return ret;
1707}
1708
1709void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1710{
1711 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1712 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1713}
1714
1715static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1716{
1717 struct ieee80211_sub_if_data *sdata;
1718
1719 sdata = container_of(work, struct ieee80211_sub_if_data,
1720 u.mgd.tx_tspec_wk.work);
1721 ieee80211_sta_handle_tspec_ac_params(sdata);
1722}
1723
60f8b39c 1724/* MLME */
7d25745d 1725static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1726 struct ieee80211_sub_if_data *sdata,
4a3cb702 1727 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1728{
f0706e82 1729 struct ieee80211_tx_queue_params params;
4ced3f74 1730 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1731 size_t left;
1732 int count;
4a3cb702
JB		 1733 const u8 *pos;
1734 u8 uapsd_queues = 0;
f0706e82 1735
e1b3ec1a 1736 if (!local->ops->conf_tx)
7d25745d 1737 return false;
e1b3ec1a 1738
32c5057b 1739 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1740 return false;
3434fbd3
JB		 1741
1742 if (!wmm_param)
7d25745d 1743 return false;
3434fbd3 1744
f0706e82 1745 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1746 return false;
ab13315a
KV		 1747
1748 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1749 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1750
f0706e82 1751 count = wmm_param[6] & 0x0f;
46900298 1752 if (count == ifmgd->wmm_last_param_set)
7d25745d 1753 return false;
46900298 1754 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1755
1756 pos = wmm_param + 8;
1757 left = wmm_param_len - 8;
1758
1759 memset(&params, 0, sizeof(params));
1760
00e96dec 1761 sdata->wmm_acm = 0;
f0706e82
JB		 1762 for (; left >= 4; left -= 4, pos += 4) {
1763 int aci = (pos[0] >> 5) & 0x03;
1764 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1765 bool uapsd = false;
f0706e82
JB		 1766 int queue;
1767
1768 switch (aci) {
0eeb59fe 1769 case 1: /* AC_BK */
e100bb64 1770 queue = 3;
988c0f72 1771 if (acm)
00e96dec 1772 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1773 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1774 uapsd = true;
f0706e82 1775 break;
0eeb59fe 1776 case 2: /* AC_VI */
e100bb64 1777 queue = 1;
988c0f72 1778 if (acm)
00e96dec 1779 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1780 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1781 uapsd = true;
f0706e82 1782 break;
0eeb59fe 1783 case 3: /* AC_VO */
e100bb64 1784 queue = 0;
988c0f72 1785 if (acm)
00e96dec 1786 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1787 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1788 uapsd = true;
f0706e82 1789 break;
0eeb59fe 1790 case 0: /* AC_BE */
f0706e82 1791 default:
e100bb64 1792 queue = 2;
988c0f72 1793 if (acm)
00e96dec 1794 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1795 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1796 uapsd = true;
f0706e82
JB		 1797 break;
1798 }
1799
1800 params.aifs = pos[0] & 0x0f;
1801 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1802 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1803 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1804 params.acm = acm;
ab13315a
KV		 1805 params.uapsd = uapsd;
1806
bdcbd8e0 1807 mlme_dbg(sdata,
02219b3a 1808 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
bdcbd8e0
JB		 1809 queue, aci, acm,
1810 params.aifs, params.cw_min, params.cw_max,
02219b3a
JB		 1811 params.txop, params.uapsd,
1812 ifmgd->tx_tspec[queue].downgraded);
f6f3def3 1813 sdata->tx_conf[queue] = params;
02219b3a
JB		 1814 if (!ifmgd->tx_tspec[queue].downgraded &&
1815 drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1816 sdata_err(sdata,
1817 "failed to set TX queue parameters for queue %d\n",
1818 queue);
f0706e82 1819 }
e1b3ec1a
SG		 1820
1821 /* enable WMM or activate new settings */
4ced3f74 1822 sdata->vif.bss_conf.qos = true;
7d25745d 1823 return true;
f0706e82
JB		 1824}
1825
925e64c3
SG		 1826static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1827{
1828 lockdep_assert_held(&sdata->local->mtx);
1829
392b9ffb 1830 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1831 ieee80211_run_deferred_scan(sdata->local);
1832}
1833
1834static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1835{
1836 mutex_lock(&sdata->local->mtx);
1837 __ieee80211_stop_poll(sdata);
1838 mutex_unlock(&sdata->local->mtx);
1839}
1840
7a5158ef
JB		 1841static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1842 u16 capab, bool erp_valid, u8 erp)
5628221c 1843{
bda3933a 1844 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1845 u32 changed = 0;
7a5158ef
JB		 1846 bool use_protection;
1847 bool use_short_preamble;
1848 bool use_short_slot;
1849
1850 if (erp_valid) {
1851 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1852 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1853 } else {
1854 use_protection = false;
1855 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1856 }
1857
1858 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1859 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1860 use_short_slot = true;
5628221c 1861
471b3efd 1862 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1863 bss_conf->use_cts_prot = use_protection;
1864 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1865 }
7e9ed188 1866
d43c7b37 1867 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1868 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1869 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1870 }
d9430a32 1871
7a5158ef 1872 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1873 bss_conf->use_short_slot = use_short_slot;
1874 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1875 }
1876
1877 return changed;
1878}
1879
f698d856 1880static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1881 struct cfg80211_bss *cbss,
ae5eb026 1882 u32 bss_info_changed)
f0706e82 1883{
0c1ad2ca 1884 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1885 struct ieee80211_local *local = sdata->local;
68542962 1886 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1887
ae5eb026 1888 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1889 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1890 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1891
7ccc8bd7 1892 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1893 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1894
0c1ad2ca
JB		 1895 sdata->u.mgd.associated = cbss;
1896 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1897
17e4ec14
JM		 1898 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1899
488dd7b5 1900 if (sdata->vif.p2p) {
9caf0364 1901 const struct cfg80211_bss_ies *ies;
488dd7b5 1902
9caf0364
JB		 1903 rcu_read_lock();
1904 ies = rcu_dereference(cbss->ies);
1905 if (ies) {
9caf0364
JB		 1906 int ret;
1907
1908 ret = cfg80211_get_p2p_attr(
1909 ies->data, ies->len,
1910 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1911 (u8 *) &bss_conf->p2p_noa_attr,
1912 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1913 if (ret >= 2) {
67baf663
JD		 1914 sdata->u.mgd.p2p_noa_index =
1915 bss_conf->p2p_noa_attr.index;
9caf0364 1916 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1917 }
488dd7b5 1918 }
9caf0364 1919 rcu_read_unlock();
488dd7b5
JB		 1920 }
1921
b291ba11 1922 /* just to be sure */
925e64c3 1923 ieee80211_stop_poll(sdata);
b291ba11 1924
9ac19a90 1925 ieee80211_led_assoc(local, 1);
9306102e 1926
989c6505 1927 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1928 /*
1929 * If the AP is buggy we may get here with no DTIM period
1930 * known, so assume it's 1 which is the only safe assumption
1931 * in that case, although if the TIM IE is broken powersave
1932 * probably just won't work at all.
1933 */
1934 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1935 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1936 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1937 } else {
817cee76 1938 bss_conf->beacon_rate = NULL;
e5b900d2 1939 bss_conf->dtim_period = 0;
826262c3 1940 }
e5b900d2 1941
68542962 1942 bss_conf->assoc = 1;
9cef8737 1943
a97c13c3 1944 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1945 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1946 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1947 bss_info_changed |= BSS_CHANGED_CQM;
1948
68542962 1949 /* Enable ARP filtering */
0f19b41e 1950 if (bss_conf->arp_addr_cnt)
68542962 1951 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1952
ae5eb026 1953 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1954
056508dc
JB		 1955 mutex_lock(&local->iflist_mtx);
1956 ieee80211_recalc_ps(local, -1);
1957 mutex_unlock(&local->iflist_mtx);
e0cb686f 1958
04ecd257 1959 ieee80211_recalc_smps(sdata);
ab095877
EP		 1960 ieee80211_recalc_ps_vif(sdata);
1961
9ac19a90 1962 netif_carrier_on(sdata->dev);
f0706e82
JB		 1963}
1964
e69e95db 1965static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1966 u16 stype, u16 reason, bool tx,
1967 u8 *frame_buf)
aa458d17 1968{
46900298 1969 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1970 struct ieee80211_local *local = sdata->local;
3cc5240b 1971 u32 changed = 0;
aa458d17 1972
8d61ffa5 1973 sdata_assert_lock(sdata);
77fdaa12 1974
37ad3888
JB		 1975 if (WARN_ON_ONCE(tx && !frame_buf))
1976 return;
1977
b291ba11
JB		 1978 if (WARN_ON(!ifmgd->associated))
1979 return;
1980
79543d8e
DS		 1981 ieee80211_stop_poll(sdata);
1982
77fdaa12 1983 ifmgd->associated = NULL;
aa458d17
TW		 1984 netif_carrier_off(sdata->dev);
1985
88bc40e8
EP		 1986 /*
1987 * if we want to get out of ps before disassoc (why?) we have
1988 * to do it before sending disassoc, as otherwise the null-packet
1989 * won't be valid.
1990 */
1991 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1992 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1993 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1994 }
1995 local->ps_sdata = NULL;
1996
ab095877
EP		 1997 /* disable per-vif ps */
1998 ieee80211_recalc_ps_vif(sdata);
1999
14f2ae83
EG		 2000 /* make sure ongoing transmission finishes */
2001 synchronize_net();
2002
3b24f4c6
EG		 2003 /*
2004 * drop any frame before deauth/disassoc, this can be data or
2005 * management frame. Since we are disconnecting, we should not
2006 * insist sending these frames which can take time and delay
2007 * the disconnection and possible the roaming.
2008 */
f823981e 2009 if (tx)
3b24f4c6 2010 ieee80211_flush_queues(local, sdata, true);
f823981e 2011
37ad3888
JB		 2012 /* deauthenticate/disassociate now */
2013 if (tx || frame_buf)
88a9e31c
EP		 2014 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2015 reason, tx, frame_buf);
37ad3888 2016
3b24f4c6 2017 /* flush out frame - make sure the deauth was actually sent */
37ad3888 2018 if (tx)
3b24f4c6 2019 ieee80211_flush_queues(local, sdata, false);
37ad3888 2020
88a9e31c
EP		 2021 /* clear bssid only after building the needed mgmt frames */
2022 memset(ifmgd->bssid, 0, ETH_ALEN);
2023
37ad3888 2024 /* remove AP and TDLS peers */
d34ba216 2025 sta_info_flush(sdata);
37ad3888
JB		 2026
2027 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2028 changed |= ieee80211_reset_erp_info(sdata);
2029
f5e5bf25 2030 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2031 changed |= BSS_CHANGED_ASSOC;
2032 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2033
67baf663
JD		 2034 ifmgd->p2p_noa_index = -1;
2035 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2036 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2037
dd5ecfea 2038 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2039 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2040 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2041 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2042 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 2043
1ea6f9c0 2044 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2045
520eb820
KV		 2046 del_timer_sync(&local->dynamic_ps_timer);
2047 cancel_work_sync(&local->dynamic_ps_enable_work);
2048
68542962 2049 /* Disable ARP filtering */
0f19b41e 2050 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2051 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2052
3abead59
JB		 2053 sdata->vif.bss_conf.qos = false;
2054 changed |= BSS_CHANGED_QOS;
2055
0aaffa9b
JB		 2056 /* The BSSID (not really interesting) and HT changed */
2057 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2058 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2059
3abead59
JB		 2060 /* disassociated - set to defaults now */
2061 ieee80211_set_wmm_default(sdata, false);
2062
b9dcf712
JB		 2063 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2064 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2065 del_timer_sync(&sdata->u.mgd.timer);
2066 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2067
826262c3 2068 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2069 sdata->vif.bss_conf.beacon_rate = NULL;
2070
989c6505 2071 ifmgd->have_beacon = false;
826262c3 2072
028e8da0 2073 ifmgd->flags = 0;
34a3740d 2074 mutex_lock(&local->mtx);
028e8da0 2075 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2076
2077 sdata->vif.csa_active = false;
0c21e632 2078 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2079 if (sdata->csa_block_tx) {
2080 ieee80211_wake_vif_queues(local, sdata,
2081 IEEE80211_QUEUE_STOP_REASON_CSA);
2082 sdata->csa_block_tx = false;
2083 }
34a3740d 2084 mutex_unlock(&local->mtx);
2475b1cc 2085
02219b3a
JB		 2086 /* existing TX TSPEC sessions no longer exist */
2087 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2088 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2089
2475b1cc 2090 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 2091}
f0706e82 2092
3cf335d5
KV		 2093void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2094 struct ieee80211_hdr *hdr)
2095{
2096 /*
2097 * We can postpone the mgd.timer whenever receiving unicast frames
2098 * from AP because we know that the connection is working both ways
2099 * at that time. But multicast frames (and hence also beacons) must
2100 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 2101 * data idle periods for sending the periodic probe request to the
2102 * AP we're connected to.
3cf335d5 2103 */
b291ba11
JB		 2104 if (is_multicast_ether_addr(hdr->addr1))
2105 return;
2106
be099e82 2107 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 2108}
f0706e82 2109
4e5ff376
FF		 2110static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2111{
2112 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 2113 struct ieee80211_local *local = sdata->local;
4e5ff376 2114
133d40f9 2115 mutex_lock(&local->mtx);
392b9ffb
SG		 2116 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2117 goto out;
4e5ff376 2118
925e64c3 2119 __ieee80211_stop_poll(sdata);
133d40f9
SG		 2120
2121 mutex_lock(&local->iflist_mtx);
2122 ieee80211_recalc_ps(local, -1);
2123 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 2124
2125 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 2126 goto out;
4e5ff376
FF		 2127
2128 /*
2129 * We've received a probe response, but are not sure whether
2130 * we have or will be receiving any beacons or data, so let's
2131 * schedule the timers again, just in case.
2132 */
2133 ieee80211_sta_reset_beacon_monitor(sdata);
2134
2135 mod_timer(&ifmgd->conn_mon_timer,
2136 round_jiffies_up(jiffies +
2137 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 2138out:
133d40f9 2139 mutex_unlock(&local->mtx);
4e5ff376
FF		 2140}
2141
02219b3a
JB		 2142static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2143 struct ieee80211_hdr *hdr,
2144 u16 tx_time)
2145{
2146 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2147 u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
2148 int ac = ieee80211_ac_from_tid(tid);
2149 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2150 unsigned long now = jiffies;
2151
2152 if (likely(!tx_tspec->admitted_time))
2153 return;
2154
2155 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2156 tx_tspec->consumed_tx_time = 0;
2157 tx_tspec->time_slice_start = now;
2158
2159 if (tx_tspec->downgraded) {
2160 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2161 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2162 }
2163 }
2164
2165 if (tx_tspec->downgraded)
2166 return;
2167
2168 tx_tspec->consumed_tx_time += tx_time;
2169
2170 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2171 tx_tspec->downgraded = true;
2172 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2173 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2174 }
2175}
2176
4e5ff376 2177void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
02219b3a 2178 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
4e5ff376 2179{
02219b3a
JB		 2180 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2181
75706d0e 2182 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 2183 return;
2184
4e5ff376
FF		 2185 if (ieee80211_is_nullfunc(hdr->frame_control) &&
2186 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 2187 if (ack)
cab1c7fd 2188 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 2189 else
2190 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 2191 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 2192 return;
4e5ff376 2193 }
cab1c7fd
WD		 2194
2195 if (ack)
2196 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 2197}
2198
a43abf29
ML		 2199static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2200{
2201 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2202 const u8 *ssid;
f01a067d 2203 u8 *dst = ifmgd->associated->bssid;
180205bd 2204 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 2205
2206 /*
2207 * Try sending broadcast probe requests for the last three
2208 * probe requests after the first ones failed since some
2209 * buggy APs only support broadcast probe requests.
2210 */
2211 if (ifmgd->probe_send_count >= unicast_limit)
2212 dst = NULL;
a43abf29 2213
4e5ff376
FF		 2214 /*
2215 * When the hardware reports an accurate Tx ACK status, it's
2216 * better to send a nullfunc frame instead of a probe request,
2217 * as it will kick us off the AP quickly if we aren't associated
2218 * anymore. The timeout will be reset if the frame is ACKed by
2219 * the AP.
2220 */
992e68bf
SD		 2221 ifmgd->probe_send_count++;
2222
04ac3c0e
FF		 2223 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
2224 ifmgd->nullfunc_failed = false;
4e5ff376 2225 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 2226 } else {
88c868c4
SG		 2227 int ssid_len;
2228
9caf0364 2229 rcu_read_lock();
4e5ff376 2230 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2231 if (WARN_ON_ONCE(ssid == NULL))
2232 ssid_len = 0;
2233 else
2234 ssid_len = ssid[1];
2235
a344d677
JB		 2236 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
2237 ssid + 2, ssid_len, NULL,
1672c0e3 2238 0, (u32) -1, true, 0,
55de908a 2239 ifmgd->associated->channel, false);
9caf0364 2240 rcu_read_unlock();
4e5ff376 2241 }
a43abf29 2242
180205bd 2243 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2244 run_again(sdata, ifmgd->probe_timeout);
a43abf29
ML		 2245}
2246
b291ba11
JB		 2247static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2248 bool beacon)
04de8381 2249{
04de8381 2250 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2251 bool already = false;
34bfc411 2252
9607e6b6 2253 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2254 return;
2255
8d61ffa5 2256 sdata_lock(sdata);
77fdaa12
JB		 2257
2258 if (!ifmgd->associated)
2259 goto out;
2260
133d40f9
SG		 2261 mutex_lock(&sdata->local->mtx);
2262
2263 if (sdata->local->tmp_channel || sdata->local->scanning) {
2264 mutex_unlock(&sdata->local->mtx);
2265 goto out;
2266 }
2267
a13fbe54 2268 if (beacon) {
bdcbd8e0 2269 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2270 "detected beacon loss from AP (missed %d beacons) - probing\n",
2271 beacon_loss_count);
bdcbd8e0 2272
98f03342 2273 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
a13fbe54 2274 }
04de8381 2275
b291ba11
JB		 2276 /*
2277 * The driver/our work has already reported this event or the
2278 * connection monitoring has kicked in and we have already sent
2279 * a probe request. Or maybe the AP died and the driver keeps
2280 * reporting until we disassociate...
2281 *
2282 * In either case we have to ignore the current call to this
2283 * function (except for setting the correct probe reason bit)
2284 * because otherwise we would reset the timer every time and
2285 * never check whether we received a probe response!
2286 */
392b9ffb 2287 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2288 already = true;
2289
12b5f34d
EP		 2290 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2291
133d40f9
SG		 2292 mutex_unlock(&sdata->local->mtx);
2293
b291ba11
JB		 2294 if (already)
2295 goto out;
2296
4e751843
JB		 2297 mutex_lock(&sdata->local->iflist_mtx);
2298 ieee80211_recalc_ps(sdata->local, -1);
2299 mutex_unlock(&sdata->local->iflist_mtx);
2300
a43abf29
ML		 2301 ifmgd->probe_send_count = 0;
2302 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2303 out:
8d61ffa5 2304 sdata_unlock(sdata);
04de8381
KV		 2305}
2306
a619a4c0
JO		 2307struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2308 struct ieee80211_vif *vif)
2309{
2310 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2311 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2312 struct cfg80211_bss *cbss;
a619a4c0
JO		 2313 struct sk_buff *skb;
2314 const u8 *ssid;
88c868c4 2315 int ssid_len;
a619a4c0
JO		 2316
2317 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2318 return NULL;
2319
8d61ffa5 2320 sdata_assert_lock(sdata);
a619a4c0 2321
d9b3b28b
EP		 2322 if (ifmgd->associated)
2323 cbss = ifmgd->associated;
2324 else if (ifmgd->auth_data)
2325 cbss = ifmgd->auth_data->bss;
2326 else if (ifmgd->assoc_data)
2327 cbss = ifmgd->assoc_data->bss;
2328 else
a619a4c0
JO		 2329 return NULL;
2330
9caf0364 2331 rcu_read_lock();
d9b3b28b 2332 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2333 if (WARN_ON_ONCE(ssid == NULL))
2334 ssid_len = 0;
2335 else
2336 ssid_len = ssid[1];
2337
a344d677 2338 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
55de908a 2339 (u32) -1, cbss->channel,
6b77863b 2340 ssid + 2, ssid_len,
85a237fe 2341 NULL, 0, true);
9caf0364 2342 rcu_read_unlock();
a619a4c0
JO		 2343
2344 return skb;
2345}
2346EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2347
eef9e54c 2348static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2349{
59af6928 2350 struct ieee80211_local *local = sdata->local;
1e4dcd01 2351 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2352 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2353
8d61ffa5 2354 sdata_lock(sdata);
1e4dcd01 2355 if (!ifmgd->associated) {
8d61ffa5 2356 sdata_unlock(sdata);
1e4dcd01
JO		 2357 return;
2358 }
2359
37ad3888
JB		 2360 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2361 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2362 true, frame_buf);
59af6928 2363 mutex_lock(&local->mtx);
7578d575 2364 sdata->vif.csa_active = false;
0c21e632 2365 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2366 if (sdata->csa_block_tx) {
2367 ieee80211_wake_vif_queues(local, sdata,
2368 IEEE80211_QUEUE_STOP_REASON_CSA);
2369 sdata->csa_block_tx = false;
2370 }
59af6928 2371 mutex_unlock(&local->mtx);
7da7cc1d 2372
6ff57cf8
JB		 2373 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2374 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2375 sdata_unlock(sdata);
1e4dcd01
JO		 2376}
2377
cc74c0c7 2378static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2379{
2380 struct ieee80211_sub_if_data *sdata =
2381 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2382 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2383 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2384 struct sta_info *sta;
2385
2386 if (ifmgd->associated) {
30fa9047 2387 rcu_read_lock();
a85e1d55
PS		 2388 sta = sta_info_get(sdata, ifmgd->bssid);
2389 if (sta)
2390 sta->beacon_loss_count++;
30fa9047 2391 rcu_read_unlock();
a85e1d55 2392 }
b291ba11 2393
682bd38b 2394 if (ifmgd->connection_loss) {
882a7c69
JB		 2395 sdata_info(sdata, "Connection to AP %pM lost\n",
2396 ifmgd->bssid);
eef9e54c 2397 __ieee80211_disconnect(sdata);
882a7c69 2398 } else {
1e4dcd01 2399 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2400 }
2401}
2402
2403static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2404{
2405 struct ieee80211_sub_if_data *sdata =
2406 container_of(work, struct ieee80211_sub_if_data,
2407 u.mgd.csa_connection_drop_work);
2408
eef9e54c 2409 __ieee80211_disconnect(sdata);
b291ba11
JB		 2410}
2411
04de8381
KV		 2412void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2413{
2414 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2415 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2416
b5878a2d
JB		 2417 trace_api_beacon_loss(sdata);
2418
682bd38b 2419 sdata->u.mgd.connection_loss = false;
1e4dcd01 2420 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2421}
2422EXPORT_SYMBOL(ieee80211_beacon_loss);
2423
1e4dcd01
JO		 2424void ieee80211_connection_loss(struct ieee80211_vif *vif)
2425{
2426 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2427 struct ieee80211_hw *hw = &sdata->local->hw;
2428
b5878a2d
JB		 2429 trace_api_connection_loss(sdata);
2430
682bd38b 2431 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2432 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2433}
2434EXPORT_SYMBOL(ieee80211_connection_loss);
2435
2436
66e67e41
JB		 2437static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2438 bool assoc)
2439{
2440 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2441
8d61ffa5 2442 sdata_assert_lock(sdata);
66e67e41 2443
66e67e41 2444 if (!assoc) {
c1e140bf
EG		 2445 /*
2446 * we are not authenticated yet, the only timer that could be
2447 * running is the timeout for the authentication response which
2448 * which is not relevant anymore.
2449 */
2450 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2451 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2452
2453 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2454 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2455 sdata->u.mgd.flags = 0;
34a3740d 2456 mutex_lock(&sdata->local->mtx);
55de908a 2457 ieee80211_vif_release_channel(sdata);
34a3740d 2458 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2459 }
2460
5b112d3d 2461 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2462 kfree(auth_data);
2463 sdata->u.mgd.auth_data = NULL;
2464}
2465
2466static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2467 struct ieee80211_mgmt *mgmt, size_t len)
2468{
1672c0e3 2469 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2470 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2471 u8 *pos;
2472 struct ieee802_11_elems elems;
1672c0e3 2473 u32 tx_flags = 0;
66e67e41
JB		 2474
2475 pos = mgmt->u.auth.variable;
b2e506bf 2476 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2477 if (!elems.challenge)
2478 return;
2479 auth_data->expected_transaction = 4;
a1845fc7 2480 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2481 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2482 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2483 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2484 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2485 elems.challenge - 2, elems.challenge_len + 2,
2486 auth_data->bss->bssid, auth_data->bss->bssid,
2487 auth_data->key, auth_data->key_len,
1672c0e3 2488 auth_data->key_idx, tx_flags);
66e67e41
JB		 2489}
2490
8d61ffa5
JB		 2491static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2492 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2493{
2494 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2495 u8 bssid[ETH_ALEN];
2496 u16 auth_alg, auth_transaction, status_code;
2497 struct sta_info *sta;
2498
8d61ffa5 2499 sdata_assert_lock(sdata);
66e67e41
JB		 2500
2501 if (len < 24 + 6)
8d61ffa5 2502 return;
66e67e41
JB		 2503
2504 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2505 return;
66e67e41
JB		 2506
2507 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2508
b203ca39 2509 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2510 return;
66e67e41
JB		 2511
2512 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2513 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2514 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2515
2516 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2517 auth_transaction != ifmgd->auth_data->expected_transaction) {
2518 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2519 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2520 auth_transaction,
2521 ifmgd->auth_data->expected_transaction);
8d61ffa5 2522 return;
0f4126e8 2523 }
66e67e41
JB		 2524
2525 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2526 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2527 mgmt->sa, status_code);
dac211ec 2528 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2529 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2530 return;
66e67e41
JB		 2531 }
2532
2533 switch (ifmgd->auth_data->algorithm) {
2534 case WLAN_AUTH_OPEN:
2535 case WLAN_AUTH_LEAP:
2536 case WLAN_AUTH_FT:
6b8ece3a 2537 case WLAN_AUTH_SAE:
66e67e41
JB		 2538 break;
2539 case WLAN_AUTH_SHARED_KEY:
2540 if (ifmgd->auth_data->expected_transaction != 4) {
2541 ieee80211_auth_challenge(sdata, mgmt, len);
2542 /* need another frame */
8d61ffa5 2543 return;
66e67e41
JB		 2544 }
2545 break;
2546 default:
2547 WARN_ONCE(1, "invalid auth alg %d",
2548 ifmgd->auth_data->algorithm);
8d61ffa5 2549 return;
66e67e41
JB		 2550 }
2551
bdcbd8e0 2552 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2553 ifmgd->auth_data->done = true;
2554 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2555 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2556 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2557
6b8ece3a
JM		 2558 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2559 ifmgd->auth_data->expected_transaction != 2) {
2560 /*
2561 * Report auth frame to user space for processing since another
2562 * round of Authentication frames is still needed.
2563 */
6ff57cf8 2564 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2565 return;
6b8ece3a
JM		 2566 }
2567
66e67e41
JB		 2568 /* move station state to auth */
2569 mutex_lock(&sdata->local->sta_mtx);
2570 sta = sta_info_get(sdata, bssid);
2571 if (!sta) {
2572 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2573 goto out_err;
2574 }
2575 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2576 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2577 goto out_err;
2578 }
2579 mutex_unlock(&sdata->local->sta_mtx);
2580
6ff57cf8 2581 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2582 return;
66e67e41
JB		 2583 out_err:
2584 mutex_unlock(&sdata->local->sta_mtx);
2585 /* ignore frame -- wait for timeout */
66e67e41
JB		 2586}
2587
dfa1ad29
CO		 2588#define case_WLAN(type) \
2589 case WLAN_REASON_##type: return #type
2590
2591static const char *ieee80211_get_reason_code_string(u16 reason_code)
2592{
2593 switch (reason_code) {
2594 case_WLAN(UNSPECIFIED);
2595 case_WLAN(PREV_AUTH_NOT_VALID);
2596 case_WLAN(DEAUTH_LEAVING);
2597 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2598 case_WLAN(DISASSOC_AP_BUSY);
2599 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2600 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2601 case_WLAN(DISASSOC_STA_HAS_LEFT);
2602 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2603 case_WLAN(DISASSOC_BAD_POWER);
2604 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2605 case_WLAN(INVALID_IE);
2606 case_WLAN(MIC_FAILURE);
2607 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2608 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2609 case_WLAN(IE_DIFFERENT);
2610 case_WLAN(INVALID_GROUP_CIPHER);
2611 case_WLAN(INVALID_PAIRWISE_CIPHER);
2612 case_WLAN(INVALID_AKMP);
2613 case_WLAN(UNSUPP_RSN_VERSION);
2614 case_WLAN(INVALID_RSN_IE_CAP);
2615 case_WLAN(IEEE8021X_FAILED);
2616 case_WLAN(CIPHER_SUITE_REJECTED);
2617 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2618 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2619 case_WLAN(DISASSOC_LOW_ACK);
2620 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2621 case_WLAN(QSTA_LEAVE_QBSS);
2622 case_WLAN(QSTA_NOT_USE);
2623 case_WLAN(QSTA_REQUIRE_SETUP);
2624 case_WLAN(QSTA_TIMEOUT);
2625 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2626 case_WLAN(MESH_PEER_CANCELED);
2627 case_WLAN(MESH_MAX_PEERS);
2628 case_WLAN(MESH_CONFIG);
2629 case_WLAN(MESH_CLOSE);
2630 case_WLAN(MESH_MAX_RETRIES);
2631 case_WLAN(MESH_CONFIRM_TIMEOUT);
2632 case_WLAN(MESH_INVALID_GTK);
2633 case_WLAN(MESH_INCONSISTENT_PARAM);
2634 case_WLAN(MESH_INVALID_SECURITY);
2635 case_WLAN(MESH_PATH_ERROR);
2636 case_WLAN(MESH_PATH_NOFORWARD);
2637 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2638 case_WLAN(MAC_EXISTS_IN_MBSS);
2639 case_WLAN(MESH_CHAN_REGULATORY);
2640 case_WLAN(MESH_CHAN);
2641 default: return "<unknown>";
2642 }
2643}
66e67e41 2644
8d61ffa5
JB		 2645static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2646 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2647{
46900298 2648 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2649 const u8 *bssid = NULL;
f0706e82
JB		 2650 u16 reason_code;
2651
8d61ffa5 2652 sdata_assert_lock(sdata);
66e67e41 2653
f4ea83dd 2654 if (len < 24 + 2)
8d61ffa5 2655 return;
f0706e82 2656
66e67e41 2657 if (!ifmgd->associated ||
b203ca39 2658 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2659 return;
77fdaa12 2660
0c1ad2ca 2661 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2662
2663 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2664
dfa1ad29
CO		 2665 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2666 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2667
37ad3888
JB		 2668 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2669
6ff57cf8 2670 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2671}
2672
2673
8d61ffa5
JB		 2674static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2675 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2676{
46900298 2677 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2678 u16 reason_code;
2679
8d61ffa5 2680 sdata_assert_lock(sdata);
77fdaa12 2681
66e67e41 2682 if (len < 24 + 2)
8d61ffa5 2683 return;
77fdaa12 2684
66e67e41 2685 if (!ifmgd->associated ||
b203ca39 2686 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2687 return;
f0706e82
JB		 2688
2689 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2690
bdcbd8e0
JB		 2691 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2692 mgmt->sa, reason_code);
f0706e82 2693
37ad3888
JB		 2694 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2695
6ff57cf8 2696 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2697}
2698
c74d084f
CL		 2699static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2700 u8 *supp_rates, unsigned int supp_rates_len,
2701 u32 *rates, u32 *basic_rates,
2702 bool *have_higher_than_11mbit,
2103dec1
SW		 2703 int *min_rate, int *min_rate_index,
2704 int shift, u32 rate_flags)
c74d084f
CL		 2705{
2706 int i, j;
2707
2708 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2709 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2710 bool is_basic = !!(supp_rates[i] & 0x80);
2711
2103dec1 2712 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2713 *have_higher_than_11mbit = true;
2714
2715 /*
2716 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2717 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2718 *
2719 * Note: Even through the membership selector and the basic
2720 * rate flag share the same bit, they are not exactly
2721 * the same.
2722 */
2723 if (!!(supp_rates[i] & 0x80) &&
2724 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2725 continue;
2726
2727 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2728 struct ieee80211_rate *br;
2729 int brate;
2730
2731 br = &sband->bitrates[j];
2732 if ((rate_flags & br->flags) != rate_flags)
2733 continue;
2734
2735 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2736 if (brate == rate) {
c74d084f
CL		 2737 *rates |= BIT(j);
2738 if (is_basic)
2739 *basic_rates |= BIT(j);
2103dec1
SW		 2740 if ((rate * 5) < *min_rate) {
2741 *min_rate = rate * 5;
c74d084f
CL		 2742 *min_rate_index = j;
2743 }
2744 break;
2745 }
2746 }
2747 }
2748}
f0706e82 2749
66e67e41
JB		 2750static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2751 bool assoc)
2752{
2753 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2754
8d61ffa5 2755 sdata_assert_lock(sdata);
66e67e41 2756
66e67e41 2757 if (!assoc) {
c1e140bf
EG		 2758 /*
2759 * we are not associated yet, the only timer that could be
2760 * running is the timeout for the association response which
2761 * which is not relevant anymore.
2762 */
2763 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2764 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2765
2766 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2767 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2768 sdata->u.mgd.flags = 0;
34a3740d 2769 mutex_lock(&sdata->local->mtx);
55de908a 2770 ieee80211_vif_release_channel(sdata);
34a3740d 2771 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2772 }
2773
2774 kfree(assoc_data);
2775 sdata->u.mgd.assoc_data = NULL;
2776}
2777
2778static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2779 struct cfg80211_bss *cbss,
af6b6374 2780 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2781{
46900298 2782 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2783 struct ieee80211_local *local = sdata->local;
8318d78a 2784 struct ieee80211_supported_band *sband;
f0706e82 2785 struct sta_info *sta;
af6b6374 2786 u8 *pos;
af6b6374 2787 u16 capab_info, aid;
f0706e82 2788 struct ieee802_11_elems elems;
bda3933a 2789 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2790 const struct cfg80211_bss_ies *bss_ies = NULL;
2791 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2792 u32 changed = 0;
c74d084f 2793 int err;
35d865af 2794 bool ret;
f0706e82 2795
af6b6374 2796 /* AssocResp and ReassocResp have identical structure */
f0706e82 2797
f0706e82 2798 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2799 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2800
1dd84aa2 2801 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2802 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2803 aid);
1dd84aa2
JB		 2804 aid &= ~(BIT(15) | BIT(14));
2805
05cb9108
JB		 2806 ifmgd->broken_ap = false;
2807
2808 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2809 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2810 aid);
05cb9108
JB		 2811 aid = 0;
2812 ifmgd->broken_ap = true;
2813 }
2814
af6b6374 2815 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2816 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2817
f0706e82 2818 if (!elems.supp_rates) {
bdcbd8e0 2819 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2820 return false;
f0706e82
JB		 2821 }
2822
46900298 2823 ifmgd->aid = aid;
9041c1fa
AN		 2824 ifmgd->tdls_chan_switch_prohibited =
2825 elems.ext_capab && elems.ext_capab_len >= 5 &&
2826 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 2827
35d865af
JB		 2828 /*
2829 * Some APs are erroneously not including some information in their
2830 * (re)association response frames. Try to recover by using the data
2831 * from the beacon or probe response. This seems to afflict mobile
2832 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2833 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2834 */
2835 if ((assoc_data->wmm && !elems.wmm_param) ||
2836 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2837 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2838 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2839 (!elems.vht_cap_elem || !elems.vht_operation))) {
2840 const struct cfg80211_bss_ies *ies;
2841 struct ieee802_11_elems bss_elems;
2842
2843 rcu_read_lock();
2844 ies = rcu_dereference(cbss->ies);
2845 if (ies)
2846 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2847 GFP_ATOMIC);
2848 rcu_read_unlock();
2849 if (!bss_ies)
2850 return false;
2851
2852 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2853 false, &bss_elems);
2854 if (assoc_data->wmm &&
2855 !elems.wmm_param && bss_elems.wmm_param) {
2856 elems.wmm_param = bss_elems.wmm_param;
2857 sdata_info(sdata,
2858 "AP bug: WMM param missing from AssocResp\n");
2859 }
2860
2861 /*
2862 * Also check if we requested HT/VHT, otherwise the AP doesn't
2863 * have to include the IEs in the (re)association response.
2864 */
2865 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2866 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2867 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2868 sdata_info(sdata,
2869 "AP bug: HT capability missing from AssocResp\n");
2870 }
2871 if (!elems.ht_operation && bss_elems.ht_operation &&
2872 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2873 elems.ht_operation = bss_elems.ht_operation;
2874 sdata_info(sdata,
2875 "AP bug: HT operation missing from AssocResp\n");
2876 }
2877 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2878 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2879 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2880 sdata_info(sdata,
2881 "AP bug: VHT capa missing from AssocResp\n");
2882 }
2883 if (!elems.vht_operation && bss_elems.vht_operation &&
2884 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2885 elems.vht_operation = bss_elems.vht_operation;
2886 sdata_info(sdata,
2887 "AP bug: VHT operation missing from AssocResp\n");
2888 }
2889 }
2890
30eb1dc2
JB		 2891 /*
2892 * We previously checked these in the beacon/probe response, so
2893 * they should be present here. This is just a safety net.
2894 */
2895 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2896 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2897 sdata_info(sdata,
35d865af
JB		 2898 "HT AP is missing WMM params or HT capability/operation\n");
2899 ret = false;
2900 goto out;
30eb1dc2
JB		 2901 }
2902
2903 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2904 (!elems.vht_cap_elem || !elems.vht_operation)) {
2905 sdata_info(sdata,
35d865af
JB		 2906 "VHT AP is missing VHT capability/operation\n");
2907 ret = false;
2908 goto out;
30eb1dc2
JB		 2909 }
2910
2a33bee2
GE		 2911 mutex_lock(&sdata->local->sta_mtx);
2912 /*
2913 * station info was already allocated and inserted before
2914 * the association and should be available to us
2915 */
7852e361 2916 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2917 if (WARN_ON(!sta)) {
2918 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2919 ret = false;
2920 goto out;
77fdaa12 2921 }
05e5e883 2922
55de908a 2923 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2924
30eb1dc2 2925 /* Set up internal HT/VHT capabilities */
a8243b72 2926 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2927 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2928 elems.ht_cap_elem, sta);
64f68e5d 2929
818255ea
MP		 2930 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2931 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2932 elems.vht_cap_elem, sta);
818255ea 2933
30eb1dc2
JB		 2934 /*
2935 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2936 * in their association response, so ignore that data for our own
2937 * configuration. If it changed since the last beacon, we'll get the
2938 * next beacon and update then.
2939 */
1128958d 2940
bee7f586
JB		 2941 /*
2942 * If an operating mode notification IE is present, override the
2943 * NSS calculation (that would be done in rate_control_rate_init())
2944 * and use the # of streams from that element.
2945 */
2946 if (elems.opmode_notif &&
2947 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2948 u8 nss;
2949
2950 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2951 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2952 nss += 1;
2953 sta->sta.rx_nss = nss;
2954 }
2955
4b7679a5 2956 rate_control_rate_init(sta);
f0706e82 2957
64a8cef4 2958 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
c2c98fde 2959 set_sta_flag(sta, WLAN_STA_MFP);
64a8cef4
SJ		 2960 sta->sta.mfp = true;
2961 } else {
2962 sta->sta.mfp = false;
2963 }
5394af4d 2964
a74a8c84 2965 sta->sta.wme = elems.wmm_param;
ddf4ac53 2966
3e4d40fa 2967 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2968 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2969 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2970 if (err) {
bdcbd8e0
JB		 2971 sdata_info(sdata,
2972 "failed to move station %pM to desired state\n",
2973 sta->sta.addr);
c8987876
JB		 2974 WARN_ON(__sta_info_destroy(sta));
2975 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2976 ret = false;
2977 goto out;
c8987876
JB		 2978 }
2979
7852e361 2980 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2981
f2176d72
JO		 2982 /*
2983 * Always handle WMM once after association regardless
2984 * of the first value the AP uses. Setting -1 here has
2985 * that effect because the AP values is an unsigned
2986 * 4-bit value.
2987 */
2988 ifmgd->wmm_last_param_set = -1;
2989
095d81ce 2990 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2991 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2992 elems.wmm_param_len);
aa837e1d 2993 else
3abead59
JB		 2994 ieee80211_set_wmm_default(sdata, false);
2995 changed |= BSS_CHANGED_QOS;
f0706e82 2996
60f8b39c
JB		 2997 /* set AID and assoc capability,
2998 * ieee80211_set_associated() will tell the driver */
2999 bss_conf->aid = aid;
3000 bss_conf->assoc_capability = capab_info;
0c1ad2ca 3001 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 3002
d524215f
FF		 3003 /*
3004 * If we're using 4-addr mode, let the AP know that we're
3005 * doing so, so that it can create the STA VLAN on its side
3006 */
3007 if (ifmgd->use_4addr)
3008 ieee80211_send_4addr_nullfunc(local, sdata);
3009
15b7b062 3010 /*
b291ba11
JB		 3011 * Start timer to probe the connection to the AP now.
3012 * Also start the timer that will detect beacon loss.
15b7b062 3013 */
b291ba11 3014 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 3015 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 3016
35d865af
JB		 3017 ret = true;
3018 out:
3019 kfree(bss_ies);
3020 return ret;
f0706e82
JB		 3021}
3022
8d61ffa5
JB		 3023static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3024 struct ieee80211_mgmt *mgmt,
3025 size_t len)
66e67e41
JB		 3026{
3027 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3028 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3029 u16 capab_info, status_code, aid;
3030 struct ieee802_11_elems elems;
b0b6aa2c 3031 int ac, uapsd_queues = -1;
66e67e41
JB		 3032 u8 *pos;
3033 bool reassoc;
8d61ffa5 3034 struct cfg80211_bss *bss;
66e67e41 3035
8d61ffa5 3036 sdata_assert_lock(sdata);
66e67e41
JB		 3037
3038 if (!assoc_data)
8d61ffa5 3039 return;
b203ca39 3040 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3041 return;
66e67e41
JB		 3042
3043 /*
3044 * AssocResp and ReassocResp have identical structure, so process both
3045 * of them in this function.
3046 */
3047
3048 if (len < 24 + 6)
8d61ffa5 3049 return;
66e67e41
JB		 3050
3051 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
3052 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3053 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3054 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3055
bdcbd8e0
JB		 3056 sdata_info(sdata,
3057 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3058 reassoc ? "Rea" : "A", mgmt->sa,
3059 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 3060
3061 pos = mgmt->u.assoc_resp.variable;
b2e506bf 3062 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 3063
3064 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3065 elems.timeout_int &&
3066 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3067 u32 tu, ms;
79ba1d89 3068 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3069 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3070 sdata_info(sdata,
3071 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3072 mgmt->sa, tu, ms);
66e67e41 3073 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3074 assoc_data->timeout_started = true;
66e67e41 3075 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3076 run_again(sdata, assoc_data->timeout);
3077 return;
66e67e41
JB		 3078 }
3079
8d61ffa5 3080 bss = assoc_data->bss;
66e67e41
JB		 3081
3082 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3083 sdata_info(sdata, "%pM denied association (code=%d)\n",
3084 mgmt->sa, status_code);
66e67e41
JB		 3085 ieee80211_destroy_assoc_data(sdata, false);
3086 } else {
8d61ffa5 3087 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 3088 /* oops -- internal error -- send timeout for now */
10a9109f 3089 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3090 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3091 return;
66e67e41 3092 }
635d999f 3093 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3094
3095 /*
3096 * destroy assoc_data afterwards, as otherwise an idle
3097 * recalc after assoc_data is NULL but before associated
3098 * is set can cause the interface to go idle
3099 */
3100 ieee80211_destroy_assoc_data(sdata, true);
b0b6aa2c
EP		 3101
3102 /* get uapsd queues configuration */
3103 uapsd_queues = 0;
3104 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3105 if (sdata->tx_conf[ac].uapsd)
3106 uapsd_queues |= BIT(ac);
66e67e41
JB		 3107 }
3108
b0b6aa2c 3109 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues);
66e67e41 3110}
8e3c1b77 3111
98c8fccf 3112static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3113 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 3114 struct ieee80211_rx_status *rx_status,
d45c4172 3115 struct ieee802_11_elems *elems)
98c8fccf
JB		 3116{
3117 struct ieee80211_local *local = sdata->local;
c2b13452 3118 struct ieee80211_bss *bss;
98c8fccf 3119 struct ieee80211_channel *channel;
56007a02 3120
8d61ffa5 3121 sdata_assert_lock(sdata);
b4f286a1 3122
3afc2167
EG		 3123 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3124 if (!channel)
98c8fccf
JB		 3125 return;
3126
98c8fccf 3127 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 3128 channel);
817cee76 3129 if (bss) {
817cee76 3130 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3131 ieee80211_rx_bss_put(local, bss);
817cee76 3132 }
f0706e82
JB		 3133}
3134
3135
f698d856 3136static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3137 struct sk_buff *skb)
f0706e82 3138{
af6b6374 3139 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3140 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 3141 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3142 size_t baselen, len = skb->len;
ae6a44e3
EK		 3143 struct ieee802_11_elems elems;
3144
15b7b062
KV		 3145 ifmgd = &sdata->u.mgd;
3146
8d61ffa5 3147 sdata_assert_lock(sdata);
77fdaa12 3148
b203ca39 3149 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 3150 return; /* ignore ProbeResp to foreign address */
3151
ae6a44e3
EK		 3152 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3153 if (baselen > len)
3154 return;
3155
3156 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 3157 false, &elems);
ae6a44e3 3158
d45c4172 3159 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 3160
77fdaa12 3161 if (ifmgd->associated &&
b203ca39 3162 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3163 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 3164
3165 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 3166 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 3167 /* got probe response, continue with auth */
bdcbd8e0 3168 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 3169 ifmgd->auth_data->tries = 0;
3170 ifmgd->auth_data->timeout = jiffies;
89afe614 3171 ifmgd->auth_data->timeout_started = true;
8d61ffa5 3172 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3173 }
f0706e82
JB		 3174}
3175
d91f36db
JB		 3176/*
3177 * This is the canonical list of information elements we care about,
3178 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3179 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3180 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3181 * changes to requested client power.
d91f36db
JB		 3182 *
3183 * We implement beacon filtering in software since that means we can
3184 * avoid processing the frame here and in cfg80211, and userspace
3185 * will not be able to tell whether the hardware supports it or not.
3186 *
3187 * XXX: This list needs to be dynamic -- userspace needs to be able to
3188 * add items it requires. It also needs to be able to tell us to
3189 * look out for other vendor IEs.
3190 */
3191static const u64 care_about_ies =
1d4df3a5
JB		 3192 (1ULL << WLAN_EID_COUNTRY) |
3193 (1ULL << WLAN_EID_ERP_INFO) |
3194 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3195 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3196 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 3197 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 3198
8d61ffa5
JB		 3199static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3200 struct ieee80211_mgmt *mgmt, size_t len,
3201 struct ieee80211_rx_status *rx_status)
f0706e82 3202{
d91f36db 3203 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 3204 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 3205 size_t baselen;
3206 struct ieee802_11_elems elems;
f698d856 3207 struct ieee80211_local *local = sdata->local;
55de908a
JB		 3208 struct ieee80211_chanctx_conf *chanctx_conf;
3209 struct ieee80211_channel *chan;
bee7f586 3210 struct sta_info *sta;
471b3efd 3211 u32 changed = 0;
f87ad637 3212 bool erp_valid;
7a5158ef 3213 u8 erp_value = 0;
d91f36db 3214 u32 ncrc;
77fdaa12 3215 u8 *bssid;
8d61ffa5 3216 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 3217
8d61ffa5 3218 sdata_assert_lock(sdata);
f0706e82 3219
ae6a44e3
EK		 3220 /* Process beacon from the current BSS */
3221 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3222 if (baselen > len)
8d61ffa5 3223 return;
ae6a44e3 3224
55de908a
JB		 3225 rcu_read_lock();
3226 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3227 if (!chanctx_conf) {
3228 rcu_read_unlock();
8d61ffa5 3229 return;
55de908a
JB		 3230 }
3231
4bf88530 3232 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 3233 rcu_read_unlock();
8d61ffa5 3234 return;
55de908a 3235 }
4bf88530 3236 chan = chanctx_conf->def.chan;
55de908a 3237 rcu_read_unlock();
f0706e82 3238
c65dd147 3239 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 3240 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 3241 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 3242 len - baselen, false, &elems);
77fdaa12 3243
d45c4172 3244 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 3245 if (elems.tim && !elems.parse_error) {
3246 const struct ieee80211_tim_ie *tim_ie = elems.tim;
3247 ifmgd->dtim_period = tim_ie->dtim_period;
3248 }
989c6505 3249 ifmgd->have_beacon = true;
c65dd147 3250 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 3251 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3252 sdata->vif.bss_conf.sync_tsf =
3253 le64_to_cpu(mgmt->u.beacon.timestamp);
3254 sdata->vif.bss_conf.sync_device_ts =
3255 rx_status->device_timestamp;
3256 if (elems.tim)
3257 sdata->vif.bss_conf.sync_dtim_count =
3258 elems.tim->dtim_count;
3259 else
3260 sdata->vif.bss_conf.sync_dtim_count = 0;
3261 }
66e67e41
JB		 3262 /* continue assoc process */
3263 ifmgd->assoc_data->timeout = jiffies;
89afe614 3264 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 3265 run_again(sdata, ifmgd->assoc_data->timeout);
3266 return;
66e67e41 3267 }
77fdaa12 3268
66e67e41 3269 if (!ifmgd->associated ||
b203ca39 3270 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3271 return;
66e67e41 3272 bssid = ifmgd->associated->bssid;
f0706e82 3273
17e4ec14
JM		 3274 /* Track average RSSI from the Beacon frames of the current AP */
3275 ifmgd->last_beacon_signal = rx_status->signal;
3276 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3277 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 3278 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 3279 ifmgd->last_cqm_event_signal = 0;
391a200a 3280 ifmgd->count_beacon_signal = 1;
615f7b9b 3281 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 3282 } else {
3283 ifmgd->ave_beacon_signal =
3284 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
3285 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
3286 ifmgd->ave_beacon_signal) / 16;
391a200a 3287 ifmgd->count_beacon_signal++;
17e4ec14 3288 }
615f7b9b
MV		 3289
3290 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3291 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3292 int sig = ifmgd->ave_beacon_signal;
3293 int last_sig = ifmgd->last_ave_beacon_signal;
a8182929
EG		 3294 struct ieee80211_event event = {
3295 .type = RSSI_EVENT,
3296 };
615f7b9b
MV		 3297
3298 /*
3299 * if signal crosses either of the boundaries, invoke callback
3300 * with appropriate parameters
3301 */
3302 if (sig > ifmgd->rssi_max_thold &&
3303 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3304 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3305 event.u.rssi.data = RSSI_EVENT_HIGH;
3306 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3307 } else if (sig < ifmgd->rssi_min_thold &&
3308 (last_sig >= ifmgd->rssi_max_thold ||
3309 last_sig == 0)) {
3310 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3311 event.u.rssi.data = RSSI_EVENT_LOW;
3312 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3313 }
3314 }
3315
17e4ec14 3316 if (bss_conf->cqm_rssi_thold &&
391a200a 3317 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3318 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 3319 int sig = ifmgd->ave_beacon_signal / 16;
3320 int last_event = ifmgd->last_cqm_event_signal;
3321 int thold = bss_conf->cqm_rssi_thold;
3322 int hyst = bss_conf->cqm_rssi_hyst;
3323 if (sig < thold &&
3324 (last_event == 0 || sig < last_event - hyst)) {
3325 ifmgd->last_cqm_event_signal = sig;
3326 ieee80211_cqm_rssi_notify(
3327 &sdata->vif,
3328 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3329 GFP_KERNEL);
3330 } else if (sig > thold &&
3331 (last_event == 0 || sig > last_event + hyst)) {
3332 ifmgd->last_cqm_event_signal = sig;
3333 ieee80211_cqm_rssi_notify(
3334 &sdata->vif,
3335 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3336 GFP_KERNEL);
3337 }
3338 }
3339
392b9ffb 3340 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3341 mlme_dbg_ratelimited(sdata,
112c31f0 3342 "cancelling AP probe due to a received beacon\n");
392b9ffb 3343 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3344 }
3345
b291ba11
JB		 3346 /*
3347 * Push the beacon loss detection into the future since
3348 * we are processing a beacon from the AP just now.
3349 */
d3a910a8 3350 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3351
d91f36db
JB		 3352 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3353 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3354 len - baselen, false, &elems,
d91f36db
JB		 3355 care_about_ies, ncrc);
3356
25c9c875 3357 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3358 bool directed_tim = ieee80211_check_tim(elems.tim,
3359 elems.tim_len,
3360 ifmgd->aid);
1fb3606b 3361 if (directed_tim) {
572e0012 3362 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3363 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3364 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3365 ieee80211_hw_config(local,
3366 IEEE80211_CONF_CHANGE_PS);
3367 }
572e0012 3368 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3369 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3370 local->pspolling = true;
3371
3372 /*
3373 * Here is assumed that the driver will be
3374 * able to send ps-poll frame and receive a
3375 * response even though power save mode is
3376 * enabled, but some drivers might require
3377 * to disable power save here. This needs
3378 * to be investigated.
3379 */
3380 ieee80211_send_pspoll(local, sdata);
3381 }
a97b77b9
VN		 3382 }
3383 }
7a5158ef 3384
488dd7b5 3385 if (sdata->vif.p2p) {
67baf663 3386 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3387 int ret;
3388
3389 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3390 len - baselen,
3391 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3392 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3393 if (ret >= 2) {
3394 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3395 /* valid noa_attr and index changed */
3396 sdata->u.mgd.p2p_noa_index = noa.index;
3397 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3398 changed |= BSS_CHANGED_P2P_PS;
3399 /*
3400 * make sure we update all information, the CRC
3401 * mechanism doesn't look at P2P attributes.
3402 */
3403 ifmgd->beacon_crc_valid = false;
3404 }
3405 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3406 /* noa_attr not found and we had valid noa_attr before */
3407 sdata->u.mgd.p2p_noa_index = -1;
3408 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3409 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3410 ifmgd->beacon_crc_valid = false;
3411 }
3412 }
3413
0c21e632
LC		 3414 if (ifmgd->csa_waiting_bcn)
3415 ieee80211_chswitch_post_beacon(sdata);
3416
2ecc3905
AB		 3417 /*
3418 * Update beacon timing and dtim count on every beacon appearance. This
3419 * will allow the driver to use the most updated values. Do it before
3420 * comparing this one with last received beacon.
3421 * IMPORTANT: These parameters would possibly be out of sync by the time
3422 * the driver will use them. The synchronized view is currently
3423 * guaranteed only in certain callbacks.
3424 */
3425 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3426 sdata->vif.bss_conf.sync_tsf =
3427 le64_to_cpu(mgmt->u.beacon.timestamp);
3428 sdata->vif.bss_conf.sync_device_ts =
3429 rx_status->device_timestamp;
3430 if (elems.tim)
3431 sdata->vif.bss_conf.sync_dtim_count =
3432 elems.tim->dtim_count;
3433 else
3434 sdata->vif.bss_conf.sync_dtim_count = 0;
3435 }
3436
d8ec4433 3437 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3438 return;
30196673 3439 ifmgd->beacon_crc = ncrc;
d8ec4433 3440 ifmgd->beacon_crc_valid = true;
30196673 3441
d45c4172 3442 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3443
d70b7616 3444 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 3445 rx_status->device_timestamp,
d70b7616
JB		 3446 &elems, true);
3447
095d81ce
JB		 3448 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3449 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3450 elems.wmm_param_len))
3451 changed |= BSS_CHANGED_QOS;
3452
c65dd147
EG		 3453 /*
3454 * If we haven't had a beacon before, tell the driver about the
ef429dad 3455 * DTIM period (and beacon timing if desired) now.
c65dd147 3456 */
989c6505 3457 if (!ifmgd->have_beacon) {
c65dd147
EG		 3458 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3459 if (elems.tim)
3460 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3461 else
3462 bss_conf->dtim_period = 1;
ef429dad 3463
989c6505
AB		 3464 changed |= BSS_CHANGED_BEACON_INFO;
3465 ifmgd->have_beacon = true;
482a9c74
AB		 3466
3467 mutex_lock(&local->iflist_mtx);
3468 ieee80211_recalc_ps(local, -1);
3469 mutex_unlock(&local->iflist_mtx);
3470
ce857888 3471 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3472 }
3473
1946bed9 3474 if (elems.erp_info) {
7a5158ef
JB		 3475 erp_valid = true;
3476 erp_value = elems.erp_info[0];
3477 } else {
3478 erp_valid = false;
50c4afb9 3479 }
7a5158ef
JB		 3480 changed |= ieee80211_handle_bss_capability(sdata,
3481 le16_to_cpu(mgmt->u.beacon.capab_info),
3482 erp_valid, erp_value);
f0706e82 3483
1128958d 3484 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3485 sta = sta_info_get(sdata, bssid);
3486
53b954ee
EP		 3487 if (ieee80211_config_bw(sdata, sta,
3488 elems.ht_cap_elem, elems.ht_operation,
30eb1dc2
JB		 3489 elems.vht_operation, bssid, &changed)) {
3490 mutex_unlock(&local->sta_mtx);
3491 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3492 WLAN_REASON_DEAUTH_LEAVING,
3493 true, deauth_buf);
6ff57cf8
JB		 3494 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3495 sizeof(deauth_buf));
8d61ffa5 3496 return;
30eb1dc2 3497 }
bee7f586
JB		 3498
3499 if (sta && elems.opmode_notif)
3500 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3501 rx_status->band, true);
1128958d 3502 mutex_unlock(&local->sta_mtx);
d3c990fb 3503
24a4e400
SG		 3504 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
3505 elems.country_elem,
3506 elems.country_elem_len,
c8d65917
SG		 3507 elems.pwr_constr_elem,
3508 elems.cisco_dtpc_elem);
3f2355cb 3509
471b3efd 3510 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3511}
3512
1fa57d01
JB		 3513void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3514 struct sk_buff *skb)
f0706e82
JB		 3515{
3516 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3517 struct ieee80211_mgmt *mgmt;
3518 u16 fc;
1b3a2e49
JB		 3519 struct ieee802_11_elems elems;
3520 int ies_len;
f0706e82 3521
f0706e82
JB		 3522 rx_status = (struct ieee80211_rx_status *) skb->cb;
3523 mgmt = (struct ieee80211_mgmt *) skb->data;
3524 fc = le16_to_cpu(mgmt->frame_control);
3525
8d61ffa5 3526 sdata_lock(sdata);
77fdaa12 3527
66e67e41
JB		 3528 switch (fc & IEEE80211_FCTL_STYPE) {
3529 case IEEE80211_STYPE_BEACON:
8d61ffa5 3530 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3531 break;
3532 case IEEE80211_STYPE_PROBE_RESP:
3533 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3534 break;
3535 case IEEE80211_STYPE_AUTH:
8d61ffa5 3536 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3537 break;
3538 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3539 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3540 break;
3541 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3542 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3543 break;
3544 case IEEE80211_STYPE_ASSOC_RESP:
3545 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3546 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3547 break;
3548 case IEEE80211_STYPE_ACTION:
37799e52 3549 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3550 ies_len = skb->len -
3551 offsetof(struct ieee80211_mgmt,
3552 u.action.u.chan_switch.variable);
37799e52
JB		 3553
3554 if (ies_len < 0)
3555 break;
3556
3557 ieee802_11_parse_elems(
3558 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3559 ies_len, true, &elems);
37799e52
JB		 3560
3561 if (elems.parse_error)
3562 break;
3563
1b3a2e49 3564 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3565 rx_status->mactime,
3566 rx_status->device_timestamp,
3567 &elems, false);
1b3a2e49
JB		 3568 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3569 ies_len = skb->len -
3570 offsetof(struct ieee80211_mgmt,
3571 u.action.u.ext_chan_switch.variable);
3572
3573 if (ies_len < 0)
3574 break;
3575
3576 ieee802_11_parse_elems(
3577 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3578 ies_len, true, &elems);
1b3a2e49
JB		 3579
3580 if (elems.parse_error)
3581 break;
3582
3583 /* for the handling code pretend this was also an IE */
3584 elems.ext_chansw_ie =
3585 &mgmt->u.action.u.ext_chan_switch.data;
3586
66e67e41 3587 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3588 rx_status->mactime,
3589 rx_status->device_timestamp,
3590 &elems, false);
77fdaa12 3591 }
37799e52 3592 break;
77fdaa12 3593 }
8d61ffa5 3594 sdata_unlock(sdata);
f0706e82
JB		 3595}
3596
9c6bd790 3597static void ieee80211_sta_timer(unsigned long data)
f0706e82 3598{
60f8b39c
JB		 3599 struct ieee80211_sub_if_data *sdata =
3600 (struct ieee80211_sub_if_data *) data;
5bb644a0 3601
9b7d72c1 3602 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3603}
3604
04ac3c0e 3605static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3606 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3607{
6ae16775 3608 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3609
37ad3888 3610 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3611 tx, frame_buf);
37ad3888 3612
6ff57cf8
JB		 3613 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3614 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3615}
3616
66e67e41
JB		 3617static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3618{
3619 struct ieee80211_local *local = sdata->local;
3620 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3621 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3622 u32 tx_flags = 0;
66e67e41 3623
8d61ffa5 3624 sdata_assert_lock(sdata);
66e67e41
JB		 3625
3626 if (WARN_ON_ONCE(!auth_data))
3627 return -EINVAL;
3628
66e67e41
JB		 3629 auth_data->tries++;
3630
3631 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3632 sdata_info(sdata, "authentication with %pM timed out\n",
3633 auth_data->bss->bssid);
66e67e41
JB		 3634
3635 /*
3636 * Most likely AP is not in the range so remove the
3637 * bss struct for that AP.
3638 */
3639 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3640
3641 return -ETIMEDOUT;
3642 }
3643
a1845fc7
JB		 3644 drv_mgd_prepare_tx(local, sdata);
3645
66e67e41 3646 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3647 u16 trans = 1;
3648 u16 status = 0;
3649
bdcbd8e0
JB		 3650 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3651 auth_data->bss->bssid, auth_data->tries,
3652 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3653
3654 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3655
3656 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3657 trans = auth_data->sae_trans;
3658 status = auth_data->sae_status;
3659 auth_data->expected_transaction = trans;
3660 }
3661
6211dd12
SG		 3662 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3663 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3664 IEEE80211_TX_INTFL_MLME_CONN_TX;
3665
6b8ece3a
JM		 3666 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3667 auth_data->data, auth_data->data_len,
66e67e41 3668 auth_data->bss->bssid,
1672c0e3
JB		 3669 auth_data->bss->bssid, NULL, 0, 0,
3670 tx_flags);
66e67e41
JB		 3671 } else {
3672 const u8 *ssidie;
3673
bdcbd8e0
JB		 3674 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3675 auth_data->bss->bssid, auth_data->tries,
3676 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3677
9caf0364 3678 rcu_read_lock();
66e67e41 3679 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3680 if (!ssidie) {
3681 rcu_read_unlock();
66e67e41 3682 return -EINVAL;
9caf0364 3683 }
66e67e41
JB		 3684 /*
3685 * Direct probe is sent to broadcast address as some APs
3686 * will not answer to direct packet in unassociated state.
3687 */
a344d677
JB		 3688 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
3689 ssidie + 2, ssidie[1],
6211dd12 3690 NULL, 0, (u32) -1, true, 0,
55de908a 3691 auth_data->bss->channel, false);
9caf0364 3692 rcu_read_unlock();
66e67e41
JB		 3693 }
3694
6211dd12 3695 if (tx_flags == 0) {
1672c0e3 3696 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3697 auth_data->timeout_started = true;
8d61ffa5 3698 run_again(sdata, auth_data->timeout);
89afe614 3699 } else {
cb236d2d
JB		 3700 auth_data->timeout =
3701 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3702 auth_data->timeout_started = true;
3703 run_again(sdata, auth_data->timeout);
1672c0e3 3704 }
66e67e41
JB		 3705
3706 return 0;
3707}
3708
3709static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3710{
3711 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3712 struct ieee80211_local *local = sdata->local;
3713
8d61ffa5 3714 sdata_assert_lock(sdata);
66e67e41 3715
66e67e41
JB		 3716 assoc_data->tries++;
3717 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3718 sdata_info(sdata, "association with %pM timed out\n",
3719 assoc_data->bss->bssid);
66e67e41
JB		 3720
3721 /*
3722 * Most likely AP is not in the range so remove the
3723 * bss struct for that AP.
3724 */
3725 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3726
3727 return -ETIMEDOUT;
3728 }
3729
bdcbd8e0
JB		 3730 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3731 assoc_data->bss->bssid, assoc_data->tries,
3732 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3733 ieee80211_send_assoc(sdata);
3734
1672c0e3
JB		 3735 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3736 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3737 assoc_data->timeout_started = true;
8d61ffa5 3738 run_again(sdata, assoc_data->timeout);
89afe614 3739 } else {
cb236d2d
JB		 3740 assoc_data->timeout =
3741 round_jiffies_up(jiffies +
3742 IEEE80211_ASSOC_TIMEOUT_LONG);
3743 assoc_data->timeout_started = true;
3744 run_again(sdata, assoc_data->timeout);
1672c0e3 3745 }
66e67e41
JB		 3746
3747 return 0;
3748}
3749
1672c0e3
JB		 3750void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3751 __le16 fc, bool acked)
3752{
3753 struct ieee80211_local *local = sdata->local;
3754
3755 sdata->u.mgd.status_fc = fc;
3756 sdata->u.mgd.status_acked = acked;
3757 sdata->u.mgd.status_received = true;
3758
3759 ieee80211_queue_work(&local->hw, &sdata->work);
3760}
3761
1fa57d01 3762void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3763{
9c6bd790 3764 struct ieee80211_local *local = sdata->local;
1fa57d01 3765 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3766
8d61ffa5 3767 sdata_lock(sdata);
77fdaa12 3768
1672c0e3
JB		 3769 if (ifmgd->status_received) {
3770 __le16 fc = ifmgd->status_fc;
3771 bool status_acked = ifmgd->status_acked;
3772
3773 ifmgd->status_received = false;
3774 if (ifmgd->auth_data &&
3775 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3776 if (status_acked) {
3777 ifmgd->auth_data->timeout =
3778 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3779 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3780 } else {
3781 ifmgd->auth_data->timeout = jiffies - 1;
3782 }
89afe614 3783 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3784 } else if (ifmgd->assoc_data &&
3785 (ieee80211_is_assoc_req(fc) ||
3786 ieee80211_is_reassoc_req(fc))) {
3787 if (status_acked) {
3788 ifmgd->assoc_data->timeout =
3789 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3790 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3791 } else {
3792 ifmgd->assoc_data->timeout = jiffies - 1;
3793 }
89afe614 3794 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3795 }
3796 }
3797
89afe614 3798 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3799 time_after(jiffies, ifmgd->auth_data->timeout)) {
3800 if (ifmgd->auth_data->done) {
3801 /*
3802 * ok ... we waited for assoc but userspace didn't,
3803 * so let's just kill the auth data
3804 */
3805 ieee80211_destroy_auth_data(sdata, false);
3806 } else if (ieee80211_probe_auth(sdata)) {
3807 u8 bssid[ETH_ALEN];
3808
3809 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3810
3811 ieee80211_destroy_auth_data(sdata, false);
3812
6ff57cf8 3813 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3814 }
89afe614 3815 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3816 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3817
89afe614 3818 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3819 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3820 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3821 ieee80211_do_assoc(sdata)) {
959867fa 3822 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3823
3824 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3825 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3826 }
89afe614 3827 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3828 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3829
392b9ffb 3830 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3831 ifmgd->associated) {
a43abf29 3832 u8 bssid[ETH_ALEN];
72a8a3ed 3833 int max_tries;
a43abf29 3834
0c1ad2ca 3835 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3836
72a8a3ed 3837 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3838 max_tries = max_nullfunc_tries;
72a8a3ed 3839 else
180205bd 3840 max_tries = max_probe_tries;
72a8a3ed 3841
4e5ff376
FF		 3842 /* ACK received for nullfunc probing frame */
3843 if (!ifmgd->probe_send_count)
3844 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3845 else if (ifmgd->nullfunc_failed) {
3846 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3847 mlme_dbg(sdata,
3848 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3849 bssid, ifmgd->probe_send_count,
3850 max_tries);
04ac3c0e
FF		 3851 ieee80211_mgd_probe_ap_send(sdata);
3852 } else {
bdcbd8e0
JB		 3853 mlme_dbg(sdata,
3854 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3855 bssid);
95acac61 3856 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3857 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3858 false);
04ac3c0e
FF		 3859 }
3860 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3861 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3862 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3863 mlme_dbg(sdata,
3864 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3865 bssid, probe_wait_ms);
95acac61 3866 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3867 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3868 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3869 mlme_dbg(sdata,
3870 "No probe response from AP %pM after %dms, try %d/%i\n",
3871 bssid, probe_wait_ms,
3872 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3873 ieee80211_mgd_probe_ap_send(sdata);
3874 } else {
b291ba11
JB		 3875 /*
3876 * We actually lost the connection ... or did we?
3877 * Let's make sure!
3878 */
b38afa87
BG		 3879 wiphy_debug(local->hw.wiphy,
3880 "%s: No probe response from AP %pM"
3881 " after %dms, disconnecting.\n",
3882 sdata->name,
180205bd 3883 bssid, probe_wait_ms);
04ac3c0e 3884
95acac61 3885 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3886 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3887 }
3888 }
3889
8d61ffa5 3890 sdata_unlock(sdata);
f0706e82
JB		 3891}
3892
b291ba11
JB		 3893static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3894{
3895 struct ieee80211_sub_if_data *sdata =
3896 (struct ieee80211_sub_if_data *) data;
0c21e632 3897 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 3898
0c21e632 3899 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3900 return;
3901
682bd38b 3902 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3903 ieee80211_queue_work(&sdata->local->hw,
3904 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3905}
3906
3907static void ieee80211_sta_conn_mon_timer(unsigned long data)
3908{
3909 struct ieee80211_sub_if_data *sdata =
3910 (struct ieee80211_sub_if_data *) data;
3911 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3912 struct ieee80211_local *local = sdata->local;
3913
0c21e632 3914 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3915 return;
3916
42935eca 3917 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3918}
3919
3920static void ieee80211_sta_monitor_work(struct work_struct *work)
3921{
3922 struct ieee80211_sub_if_data *sdata =
3923 container_of(work, struct ieee80211_sub_if_data,
3924 u.mgd.monitor_work);
3925
3926 ieee80211_mgd_probe_ap(sdata, false);
3927}
3928
9c6bd790
JB		 3929static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3930{
494f1fe5
EP		 3931 u32 flags;
3932
ad935687 3933 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3934 __ieee80211_stop_poll(sdata);
ad935687 3935
b291ba11 3936 /* let's probe the connection once */
494f1fe5
EP		 3937 flags = sdata->local->hw.flags;
3938 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3939 ieee80211_queue_work(&sdata->local->hw,
3940 &sdata->u.mgd.monitor_work);
b291ba11 3941 /* and do all the other regular work too */
64592c8f 3942 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3943 }
9c6bd790 3944}
f0706e82 3945
b8360ab8 3946#ifdef CONFIG_PM
1a1cb744
JB		 3947void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3948{
3949 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3950 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3951
3952 sdata_lock(sdata);
3953
c52666ae
EG		 3954 if (ifmgd->auth_data || ifmgd->assoc_data) {
3955 const u8 *bssid = ifmgd->auth_data ?
3956 ifmgd->auth_data->bss->bssid :
3957 ifmgd->assoc_data->bss->bssid;
3958
1a1cb744 3959 /*
c52666ae
EG		 3960 * If we are trying to authenticate / associate while suspending,
3961 * cfg80211 won't know and won't actually abort those attempts,
3962 * thus we need to do that ourselves.
1a1cb744 3963 */
c52666ae 3964 ieee80211_send_deauth_disassoc(sdata, bssid,
1a1cb744
JB		 3965 IEEE80211_STYPE_DEAUTH,
3966 WLAN_REASON_DEAUTH_LEAVING,
3967 false, frame_buf);
c52666ae
EG		 3968 if (ifmgd->assoc_data)
3969 ieee80211_destroy_assoc_data(sdata, false);
3970 if (ifmgd->auth_data)
3971 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 3972 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3973 IEEE80211_DEAUTH_FRAME_LEN);
3974 }
3975
be72afe0
JB		 3976 /* This is a bit of a hack - we should find a better and more generic
3977 * solution to this. Normally when suspending, cfg80211 will in fact
3978 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
3979 * auth (not so important) or assoc (this is the problem) process.
3980 *
3981 * As a consequence, it can happen that we are in the process of both
3982 * associating and suspending, and receive an association response
3983 * after cfg80211 has checked if it needs to disconnect, but before
3984 * we actually set the flag to drop incoming frames. This will then
3985 * cause the workqueue flush to process the association response in
3986 * the suspend, resulting in a successful association just before it
3987 * tries to remove the interface from the driver, which now though
3988 * has a channel context assigned ... this results in issues.
3989 *
3990 * To work around this (for now) simply deauth here again if we're
3991 * now connected.
3992 */
3993 if (ifmgd->associated && !sdata->local->wowlan) {
3994 u8 bssid[ETH_ALEN];
3995 struct cfg80211_deauth_request req = {
3996 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
3997 .bssid = bssid,
3998 };
3999
4000 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4001 ieee80211_mgd_deauth(sdata, &req);
4002 }
4003
1a1cb744
JB		 4004 sdata_unlock(sdata);
4005}
4006
b8360ab8
JB		 4007void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4008{
4009 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4010
8d61ffa5 4011 sdata_lock(sdata);
b8360ab8 4012 if (!ifmgd->associated) {
8d61ffa5 4013 sdata_unlock(sdata);
b8360ab8
JB		 4014 return;
4015 }
4016
4017 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4018 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4019 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4020 ieee80211_sta_connection_lost(sdata,
4021 ifmgd->associated->bssid,
4022 WLAN_REASON_UNSPECIFIED,
4023 true);
8d61ffa5 4024 sdata_unlock(sdata);
b8360ab8
JB		 4025 return;
4026 }
8d61ffa5 4027 sdata_unlock(sdata);
b8360ab8
JB		 4028}
4029#endif
4030
9c6bd790
JB		 4031/* interface setup */
4032void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 4033{
46900298 4034 struct ieee80211_if_managed *ifmgd;
988c0f72 4035
46900298 4036 ifmgd = &sdata->u.mgd;
b291ba11 4037 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 4038 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 4039 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4040 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 4041 INIT_WORK(&ifmgd->csa_connection_drop_work,
4042 ieee80211_csa_connection_drop_work);
687da132 4043 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 4044 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4045 ieee80211_tdls_peer_del_work);
46900298 4046 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 4047 (unsigned long) sdata);
b291ba11
JB		 4048 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
4049 (unsigned long) sdata);
4050 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
4051 (unsigned long) sdata);
46900298 4052 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 4053 (unsigned long) sdata);
02219b3a
JB		 4054 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4055 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4056
ab1faead 4057 ifmgd->flags = 0;
1478acb3 4058 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4059 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4060 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4061 ifmgd->p2p_noa_index = -1;
bbbdff9e 4062
0d8614b4 4063 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4064 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4065 else
4066 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4067
4068 /* Setup TDLS data */
4069 spin_lock_init(&ifmgd->teardown_lock);
4070 ifmgd->teardown_skb = NULL;
4071 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4072}
4073
77fdaa12
JB		 4074/* scan finished notification */
4075void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4076{
31ee67a1 4077 struct ieee80211_sub_if_data *sdata;
60f8b39c 4078
77fdaa12
JB		 4079 /* Restart STA timers */
4080 rcu_read_lock();
370bd005
BG		 4081 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4082 if (ieee80211_sdata_running(sdata))
4083 ieee80211_restart_sta_timer(sdata);
4084 }
77fdaa12
JB		 4085 rcu_read_unlock();
4086}
60f8b39c 4087
77fdaa12
JB		 4088int ieee80211_max_network_latency(struct notifier_block *nb,
4089 unsigned long data, void *dummy)
4090{
4091 s32 latency_usec = (s32) data;
4092 struct ieee80211_local *local =
4093 container_of(nb, struct ieee80211_local,
4094 network_latency_notifier);
1fa6f4af 4095
77fdaa12
JB		 4096 mutex_lock(&local->iflist_mtx);
4097 ieee80211_recalc_ps(local, latency_usec);
4098 mutex_unlock(&local->iflist_mtx);
dfe67012 4099
8bd811aa 4100 return NOTIFY_OK;
9c6bd790
JB		 4101}
4102
f2d9d270
JB		 4103static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4104 struct cfg80211_bss *cbss)
4105{
4106 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4107 const u8 *ht_cap_ie, *vht_cap_ie;
4108 const struct ieee80211_ht_cap *ht_cap;
4109 const struct ieee80211_vht_cap *vht_cap;
4110 u8 chains = 1;
4111
4112 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4113 return chains;
4114
9caf0364 4115 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4116 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4117 ht_cap = (void *)(ht_cap_ie + 2);
4118 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4119 /*
4120 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4121 * "Tx Unequal Modulation Supported" fields.
4122 */
4123 }
4124
4125 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4126 return chains;
4127
9caf0364 4128 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4129 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4130 u8 nss;
4131 u16 tx_mcs_map;
4132
4133 vht_cap = (void *)(vht_cap_ie + 2);
4134 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4135 for (nss = 8; nss > 0; nss--) {
4136 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4137 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4138 break;
4139 }
4140 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4141 chains = max(chains, nss);
4142 }
4143
4144 return chains;
4145}
4146
b17166a7
JB		 4147static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4148 struct cfg80211_bss *cbss)
a1cf775d
JB		 4149{
4150 struct ieee80211_local *local = sdata->local;
4151 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4152 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4153 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4154 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 4155 struct ieee80211_supported_band *sband;
4bf88530 4156 struct cfg80211_chan_def chandef;
f2d9d270 4157 int ret;
a1cf775d 4158
24398e39
JB		 4159 sband = local->hw.wiphy->bands[cbss->channel->band];
4160
f2d9d270
JB		 4161 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4162 IEEE80211_STA_DISABLE_80P80MHZ |
4163 IEEE80211_STA_DISABLE_160MHZ);
4164
9caf0364
JB		 4165 rcu_read_lock();
4166
f2d9d270
JB		 4167 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4168 sband->ht_cap.ht_supported) {
53b954ee 4169 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4170
9caf0364 4171 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4172 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4173 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4174
53b954ee
EP		 4175 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4176 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4177 ht_cap = (void *)(ht_cap_ie + 2);
4178
4179 if (!ht_cap) {
08e6effa
JB		 4180 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4181 ht_oper = NULL;
4182 }
24398e39
JB		 4183 }
4184
f2d9d270
JB		 4185 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4186 sband->vht_cap.vht_supported) {
08e6effa 4187 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4188
9caf0364
JB		 4189 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4190 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4191 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4192 vht_oper = (void *)(vht_oper_ie + 2);
4193 if (vht_oper && !ht_oper) {
4194 vht_oper = NULL;
bdcbd8e0 4195 sdata_info(sdata,
f2d9d270 4196 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 4197 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4198 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 4199 }
08e6effa
JB		 4200
4201 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4202 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4203 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4204 vht_oper = NULL;
4205 }
24398e39
JB		 4206 }
4207
f2d9d270
JB		 4208 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4209 cbss->channel,
53b954ee 4210 ht_cap, ht_oper, vht_oper,
5cdaed1e 4211 &chandef, false);
04ecd257 4212
f2d9d270
JB		 4213 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4214 local->rx_chains);
24398e39 4215
9caf0364
JB		 4216 rcu_read_unlock();
4217
04ecd257
JB		 4218 /* will change later if needed */
4219 sdata->smps_mode = IEEE80211_SMPS_OFF;
4220
34a3740d 4221 mutex_lock(&local->mtx);
f2d9d270
JB		 4222 /*
4223 * If this fails (possibly due to channel context sharing
4224 * on incompatible channels, e.g. 80+80 and 160 sharing the
4225 * same control channel) try to use a smaller bandwidth.
4226 */
4227 ret = ieee80211_vif_use_channel(sdata, &chandef,
4228 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4229
4230 /* don't downgrade for 5 and 10 MHz channels, though. */
4231 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4232 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4233 goto out;
0418a445 4234
d601cd8d 4235 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4236 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4237 ret = ieee80211_vif_use_channel(sdata, &chandef,
4238 IEEE80211_CHANCTX_SHARED);
4239 }
34a3740d
JB		 4240 out:
4241 mutex_unlock(&local->mtx);
f2d9d270 4242 return ret;
b17166a7
JB		 4243}
4244
4245static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
4246 struct cfg80211_bss *cbss, bool assoc)
4247{
4248 struct ieee80211_local *local = sdata->local;
4249 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4250 struct ieee80211_bss *bss = (void *)cbss->priv;
4251 struct sta_info *new_sta = NULL;
179b8fc7
CRI		 4252 struct ieee80211_supported_band *sband;
4253 struct ieee80211_sta_ht_cap sta_ht_cap;
4254 bool have_sta = false, is_override = false;
b17166a7
JB		 4255 int err;
4256
179b8fc7
CRI		 4257 sband = local->hw.wiphy->bands[cbss->channel->band];
4258
b17166a7
JB		 4259 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4260 return -EINVAL;
4261
4262 if (assoc) {
4263 rcu_read_lock();
4264 have_sta = sta_info_get(sdata, cbss->bssid);
4265 rcu_read_unlock();
4266 }
4267
4268 if (!have_sta) {
4269 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4270 if (!new_sta)
4271 return -ENOMEM;
4272 }
179b8fc7
CRI		 4273
4274 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
4275 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
4276
4277 is_override = (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) !=
4278 (sband->ht_cap.cap &
4279 IEEE80211_HT_CAP_SUP_WIDTH_20_40);
4280
4281 if (new_sta || is_override) {
4282 err = ieee80211_prep_channel(sdata, cbss);
4283 if (err) {
4284 if (new_sta)
4285 sta_info_free(local, new_sta);
4286 return -EINVAL;
4287 }
4288 }
4289
13e0c8e3 4290 if (new_sta) {
5d6a1b06
JB		 4291 u32 rates = 0, basic_rates = 0;
4292 bool have_higher_than_11mbit;
4293 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 4294 struct ieee80211_chanctx_conf *chanctx_conf;
8cef2c9d 4295 const struct cfg80211_bss_ies *ies;
179b8fc7 4296 int shift = ieee80211_vif_get_shift(&sdata->vif);
2103dec1 4297 u32 rate_flags;
b17166a7 4298
2103dec1
SW		 4299 rcu_read_lock();
4300 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4301 if (WARN_ON(!chanctx_conf)) {
4302 rcu_read_unlock();
c368ddaa 4303 sta_info_free(local, new_sta);
2103dec1
SW		 4304 return -EINVAL;
4305 }
4306 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
4307 rcu_read_unlock();
5d6a1b06 4308
5d6a1b06
JB		 4309 ieee80211_get_rates(sband, bss->supp_rates,
4310 bss->supp_rates_len,
4311 &rates, &basic_rates,
4312 &have_higher_than_11mbit,
2103dec1
SW		 4313 &min_rate, &min_rate_index,
4314 shift, rate_flags);
5d6a1b06
JB		 4315
4316 /*
4317 * This used to be a workaround for basic rates missing
4318 * in the association response frame. Now that we no
4319 * longer use the basic rates from there, it probably
4320 * doesn't happen any more, but keep the workaround so
4321 * in case some *other* APs are buggy in different ways
4322 * we can connect -- with a warning.
4323 */
4324 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 4325 sdata_info(sdata,
4326 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 4327 basic_rates = BIT(min_rate_index);
4328 }
4329
13e0c8e3 4330 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 4331 sdata->vif.bss_conf.basic_rates = basic_rates;
4332
4333 /* cf. IEEE 802.11 9.2.12 */
55de908a 4334 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 4335 have_higher_than_11mbit)
4336 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4337 else
4338 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4339
4340 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4341
8c358bcd
JB		 4342 /* set timing information */
4343 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 4344 rcu_read_lock();
ef429dad
JB		 4345 ies = rcu_dereference(cbss->beacon_ies);
4346 if (ies) {
4347 const u8 *tim_ie;
4348
4349 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4350 sdata->vif.bss_conf.sync_device_ts =
4351 bss->device_ts_beacon;
4352 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4353 ies->data, ies->len);
4354 if (tim_ie && tim_ie[1] >= 2)
4355 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
4356 else
4357 sdata->vif.bss_conf.sync_dtim_count = 0;
4358 } else if (!(local->hw.flags &
4359 IEEE80211_HW_TIMING_BEACON_ONLY)) {
4360 ies = rcu_dereference(cbss->proberesp_ies);
4361 /* must be non-NULL since beacon IEs were NULL */
4362 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4363 sdata->vif.bss_conf.sync_device_ts =
4364 bss->device_ts_presp;
4365 sdata->vif.bss_conf.sync_dtim_count = 0;
4366 } else {
4367 sdata->vif.bss_conf.sync_tsf = 0;
4368 sdata->vif.bss_conf.sync_device_ts = 0;
4369 sdata->vif.bss_conf.sync_dtim_count = 0;
4370 }
8cef2c9d 4371 rcu_read_unlock();
8c358bcd
JB		 4372
4373 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 4374 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 4375 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4376 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 4377
4378 if (assoc)
13e0c8e3 4379 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 4380
13e0c8e3
JB		 4381 err = sta_info_insert(new_sta);
4382 new_sta = NULL;
a1cf775d 4383 if (err) {
bdcbd8e0
JB		 4384 sdata_info(sdata,
4385 "failed to insert STA entry for the AP (error %d)\n",
4386 err);
a1cf775d
JB		 4387 return err;
4388 }
4389 } else
b203ca39 4390 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 4391
4392 return 0;
4393}
4394
77fdaa12
JB		 4395/* config hooks */
4396int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4397 struct cfg80211_auth_request *req)
9c6bd790 4398{
66e67e41
JB		 4399 struct ieee80211_local *local = sdata->local;
4400 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4401 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4402 u16 auth_alg;
66e67e41
JB		 4403 int err;
4404
4405 /* prepare auth data structure */
9c6bd790 4406
77fdaa12
JB		 4407 switch (req->auth_type) {
4408 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4409 auth_alg = WLAN_AUTH_OPEN;
4410 break;
4411 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4412 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4413 return -EOPNOTSUPP;
77fdaa12
JB		 4414 auth_alg = WLAN_AUTH_SHARED_KEY;
4415 break;
4416 case NL80211_AUTHTYPE_FT:
4417 auth_alg = WLAN_AUTH_FT;
4418 break;
4419 case NL80211_AUTHTYPE_NETWORK_EAP:
4420 auth_alg = WLAN_AUTH_LEAP;
4421 break;
6b8ece3a
JM		 4422 case NL80211_AUTHTYPE_SAE:
4423 auth_alg = WLAN_AUTH_SAE;
4424 break;
77fdaa12
JB		 4425 default:
4426 return -EOPNOTSUPP;
60f8b39c 4427 }
77fdaa12 4428
6b8ece3a
JM		 4429 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4430 req->ie_len, GFP_KERNEL);
66e67e41 4431 if (!auth_data)
9c6bd790 4432 return -ENOMEM;
77fdaa12 4433
66e67e41 4434 auth_data->bss = req->bss;
77fdaa12 4435
6b8ece3a
JM		 4436 if (req->sae_data_len >= 4) {
4437 __le16 *pos = (__le16 *) req->sae_data;
4438 auth_data->sae_trans = le16_to_cpu(pos[0]);
4439 auth_data->sae_status = le16_to_cpu(pos[1]);
4440 memcpy(auth_data->data, req->sae_data + 4,
4441 req->sae_data_len - 4);
4442 auth_data->data_len += req->sae_data_len - 4;
4443 }
4444
77fdaa12 4445 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4446 memcpy(&auth_data->data[auth_data->data_len],
4447 req->ie, req->ie_len);
4448 auth_data->data_len += req->ie_len;
9c6bd790 4449 }
77fdaa12 4450
fffd0934 4451 if (req->key && req->key_len) {
66e67e41
JB		 4452 auth_data->key_len = req->key_len;
4453 auth_data->key_idx = req->key_idx;
4454 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4455 }
4456
66e67e41 4457 auth_data->algorithm = auth_alg;
60f8b39c 4458
66e67e41 4459 /* try to authenticate/probe */
2a33bee2 4460
66e67e41
JB		 4461 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4462 ifmgd->assoc_data) {
4463 err = -EBUSY;
4464 goto err_free;
2a33bee2
GE		 4465 }
4466
66e67e41
JB		 4467 if (ifmgd->auth_data)
4468 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4469
66e67e41
JB		 4470 /* prep auth_data so we don't go into idle on disassoc */
4471 ifmgd->auth_data = auth_data;
af6b6374 4472
7b119dc0
JB		 4473 if (ifmgd->associated) {
4474 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4475
4476 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4477 WLAN_REASON_UNSPECIFIED,
4478 false, frame_buf);
4479
6ff57cf8
JB		 4480 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4481 sizeof(frame_buf));
7b119dc0 4482 }
af6b6374 4483
bdcbd8e0 4484 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4485
a1cf775d
JB		 4486 err = ieee80211_prep_connection(sdata, req->bss, false);
4487 if (err)
66e67e41 4488 goto err_clear;
af6b6374 4489
66e67e41
JB		 4490 err = ieee80211_probe_auth(sdata);
4491 if (err) {
66e67e41
JB		 4492 sta_info_destroy_addr(sdata, req->bss->bssid);
4493 goto err_clear;
4494 }
4495
4496 /* hold our own reference */
5b112d3d 4497 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4498 return 0;
66e67e41
JB		 4499
4500 err_clear:
3d2abdfd
EP		 4501 memset(ifmgd->bssid, 0, ETH_ALEN);
4502 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4503 ifmgd->auth_data = NULL;
4504 err_free:
4505 kfree(auth_data);
66e67e41 4506 return err;
af6b6374
JB		 4507}
4508
095d81ce
JB		 4509static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4510 const u8 *wmm_param, int len)
4511{
4512 const u8 *pos;
4513 size_t left;
4514
4515 if (len < 8)
4516 return false;
4517
4518 if (wmm_param[5] != 1 /* version */)
4519 return false;
4520
4521 pos = wmm_param + 8;
4522 left = len - 8;
4523
4524 for (; left >= 4; left -= 4, pos += 4) {
4525 u8 aifsn = pos[0] & 0x0f;
4526 u8 ecwmin = pos[1] & 0x0f;
4527 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4528 int aci = (pos[0] >> 5) & 0x03;
4529
4530 if (aifsn < 2) {
4531 sdata_info(sdata,
4532 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4533 aifsn, aci);
4534 return false;
4535 }
4536 if (ecwmin > ecwmax) {
4537 sdata_info(sdata,
4538 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4539 ecwmin, ecwmax, aci);
4540 return false;
4541 }
4542 }
4543
4544 return true;
4545}
4546
77fdaa12
JB		 4547int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4548 struct cfg80211_assoc_request *req)
f0706e82 4549{
66e67e41 4550 struct ieee80211_local *local = sdata->local;
77fdaa12 4551 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4552 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4553 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4554 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4555 struct ieee80211_supported_band *sband;
b08fbbd8 4556 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4557 int i, err;
f0706e82 4558
66e67e41
JB		 4559 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4560 if (!assoc_data)
4561 return -ENOMEM;
4562
9caf0364
JB		 4563 rcu_read_lock();
4564 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4565 if (!ssidie) {
4566 rcu_read_unlock();
4567 kfree(assoc_data);
4568 return -EINVAL;
4569 }
4570 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4571 assoc_data->ssid_len = ssidie[1];
4572 rcu_read_unlock();
4573
7b119dc0
JB		 4574 if (ifmgd->associated) {
4575 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4576
4577 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4578 WLAN_REASON_UNSPECIFIED,
4579 false, frame_buf);
4580
6ff57cf8
JB		 4581 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4582 sizeof(frame_buf));
7b119dc0 4583 }
66e67e41
JB		 4584
4585 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4586 err = -EBUSY;
4587 goto err_free;
af6b6374 4588 }
77fdaa12 4589
66e67e41
JB		 4590 if (ifmgd->assoc_data) {
4591 err = -EBUSY;
4592 goto err_free;
4593 }
77fdaa12 4594
66e67e41
JB		 4595 if (ifmgd->auth_data) {
4596 bool match;
4597
4598 /* keep sta info, bssid if matching */
b203ca39 4599 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4600 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4601 }
4602
66e67e41 4603 /* prepare assoc data */
095d81ce 4604
d8ec4433
JO		 4605 ifmgd->beacon_crc_valid = false;
4606
095d81ce
JB		 4607 assoc_data->wmm = bss->wmm_used &&
4608 (local->hw.queues >= IEEE80211_NUM_ACS);
4609 if (assoc_data->wmm) {
4610 /* try to check validity of WMM params IE */
4611 const struct cfg80211_bss_ies *ies;
4612 const u8 *wp, *start, *end;
4613
4614 rcu_read_lock();
4615 ies = rcu_dereference(req->bss->ies);
4616 start = ies->data;
4617 end = start + ies->len;
4618
4619 while (true) {
4620 wp = cfg80211_find_vendor_ie(
4621 WLAN_OUI_MICROSOFT,
4622 WLAN_OUI_TYPE_MICROSOFT_WMM,
4623 start, end - start);
4624 if (!wp)
4625 break;
4626 start = wp + wp[1] + 2;
4627 /* if this IE is too short, try the next */
4628 if (wp[1] <= 4)
4629 continue;
4630 /* if this IE is WMM params, we found what we wanted */
4631 if (wp[6] == 1)
4632 break;
4633 }
4634
4635 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4636 wp[1] - 2)) {
4637 assoc_data->wmm = false;
4638 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4639 }
4640 rcu_read_unlock();
4641 }
4642
de5036aa
JB		 4643 /*
4644 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4645 * We still associate in non-HT mode (11a/b/g) if any one of these
4646 * ciphers is configured as pairwise.
4647 * We can set this to true for non-11n hardware, that'll be checked
4648 * separately along with the peer capabilities.
4649 */
1c4cb928 4650 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4651 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4652 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4653 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4654 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4655 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4656 netdev_info(sdata->dev,
d545daba 4657 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4658 }
4659 }
77fdaa12 4660
d545daba 4661 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4662 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4663 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4664 }
ef96a842 4665
dd5ecfea
JB		 4666 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4667 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4668
4e74bfdb
JB		 4669 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4670 sband = local->hw.wiphy->bands[req->bss->channel->band];
4671 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4672 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4673 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4674 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4675 if (!bss->wmm_used &&
4676 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4677 netdev_info(sdata->dev,
4678 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4679 }
4e74bfdb 4680
d545daba
MP		 4681 /* disable VHT if we don't support it or the AP doesn't use WMM */
4682 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4683 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4684 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4685 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4686 if (!bss->wmm_used &&
4687 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4688 netdev_info(sdata->dev,
4689 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4690 }
4691
ef96a842
BG		 4692 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4693 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4694 sizeof(ifmgd->ht_capa_mask));
4695
dd5ecfea
JB		 4696 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4697 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4698 sizeof(ifmgd->vht_capa_mask));
4699
77fdaa12 4700 if (req->ie && req->ie_len) {
66e67e41
JB		 4701 memcpy(assoc_data->ie, req->ie, req->ie_len);
4702 assoc_data->ie_len = req->ie_len;
4703 }
f679f65d 4704
66e67e41 4705 assoc_data->bss = req->bss;
f679f65d 4706
af6b6374
JB		 4707 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4708 if (ifmgd->powersave)
04ecd257 4709 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4710 else
04ecd257 4711 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4712 } else
04ecd257 4713 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4714
66e67e41 4715 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4716 assoc_data->supp_rates = bss->supp_rates;
4717 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4718
9caf0364 4719 rcu_read_lock();
9dde6423
JB		 4720 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4721 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4722 assoc_data->ap_ht_param =
4723 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4724 else
a8243b72 4725 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4726 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4727 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4728 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4729 sizeof(struct ieee80211_vht_cap));
4730 else
4731 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4732 rcu_read_unlock();
63f170e0 4733
848955cc
JB		 4734 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
4735 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
4736 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4737 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
4738
ab13315a 4739 if (bss->wmm_used && bss->uapsd_supported &&
848955cc 4740 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
76f0303d 4741 assoc_data->uapsd = true;
ab13315a
KV		 4742 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4743 } else {
76f0303d 4744 assoc_data->uapsd = false;
ab13315a
KV		 4745 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4746 }
4747
77fdaa12 4748 if (req->prev_bssid)
66e67e41 4749 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4750
4751 if (req->use_mfp) {
4752 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4753 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4754 } else {
4755 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4756 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4757 }
4758
cd2f5dd7
AK		 4759 if (req->flags & ASSOC_REQ_USE_RRM)
4760 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
4761 else
4762 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
4763
77fdaa12
JB		 4764 if (req->crypto.control_port)
4765 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4766 else
4767 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4768
a621fa4d
JB		 4769 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4770 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4771 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4772 sdata->vif.type);
a621fa4d 4773
66e67e41
JB		 4774 /* kick off associate process */
4775
4776 ifmgd->assoc_data = assoc_data;
826262c3 4777 ifmgd->dtim_period = 0;
989c6505 4778 ifmgd->have_beacon = false;
66e67e41 4779
a1cf775d
JB		 4780 err = ieee80211_prep_connection(sdata, req->bss, true);
4781 if (err)
4782 goto err_clear;
66e67e41 4783
c65dd147
EG		 4784 rcu_read_lock();
4785 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4786
c65dd147
EG		 4787 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4788 !beacon_ies) {
4789 /*
4790 * Wait up to one beacon interval ...
4791 * should this be more if we miss one?
4792 */
4793 sdata_info(sdata, "waiting for beacon from %pM\n",
4794 ifmgd->bssid);
4795 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4796 assoc_data->timeout_started = true;
c65dd147
EG		 4797 assoc_data->need_beacon = true;
4798 } else if (beacon_ies) {
4799 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4800 beacon_ies->data,
4801 beacon_ies->len);
ef429dad
JB		 4802 u8 dtim_count = 0;
4803
c65dd147
EG		 4804 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4805 const struct ieee80211_tim_ie *tim;
4806 tim = (void *)(tim_ie + 2);
4807 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4808 dtim_count = tim->dtim_count;
826262c3 4809 }
989c6505 4810 ifmgd->have_beacon = true;
66e67e41 4811 assoc_data->timeout = jiffies;
89afe614 4812 assoc_data->timeout_started = true;
ef429dad
JB		 4813
4814 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4815 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4816 sdata->vif.bss_conf.sync_device_ts =
4817 bss->device_ts_beacon;
4818 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4819 }
c65dd147
EG		 4820 } else {
4821 assoc_data->timeout = jiffies;
89afe614 4822 assoc_data->timeout_started = true;
66e67e41 4823 }
c65dd147
EG		 4824 rcu_read_unlock();
4825
8d61ffa5 4826 run_again(sdata, assoc_data->timeout);
66e67e41 4827
fcff4f10
PS		 4828 if (bss->corrupt_data) {
4829 char *corrupt_type = "data";
4830 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4831 if (bss->corrupt_data &
4832 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4833 corrupt_type = "beacon and probe response";
4834 else
4835 corrupt_type = "beacon";
4836 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4837 corrupt_type = "probe response";
bdcbd8e0
JB		 4838 sdata_info(sdata, "associating with AP with corrupt %s\n",
4839 corrupt_type);
fcff4f10
PS		 4840 }
4841
8d61ffa5 4842 return 0;
66e67e41 4843 err_clear:
3d2abdfd
EP		 4844 memset(ifmgd->bssid, 0, ETH_ALEN);
4845 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4846 ifmgd->assoc_data = NULL;
4847 err_free:
4848 kfree(assoc_data);
66e67e41 4849 return err;
f0706e82
JB		 4850}
4851
77fdaa12 4852int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4853 struct cfg80211_deauth_request *req)
f0706e82 4854{
46900298 4855 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4856 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4857 bool tx = !req->local_state_change;
f0706e82 4858
c9c3a060
JB		 4859 if (ifmgd->auth_data &&
4860 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4861 sdata_info(sdata,
4862 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4863 req->bssid, req->reason_code,
4864 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4865
8c7d857c 4866 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4867 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4868 IEEE80211_STYPE_DEAUTH,
6863255b 4869 req->reason_code, tx,
37ad3888 4870 frame_buf);
86552017 4871 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4872 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4873 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4874
c9c3a060 4875 return 0;
8c7d857c
EG		 4876 }
4877
86552017
JB		 4878 if (ifmgd->associated &&
4879 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4880 sdata_info(sdata,
4881 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4882 req->bssid, req->reason_code,
4883 ieee80211_get_reason_code_string(req->reason_code));
4884
86552017
JB		 4885 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4886 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4887 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4888 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4889 return 0;
4890 }
86552017 4891
c9c3a060 4892 return -ENOTCONN;
f0706e82 4893}
84363e6e 4894
77fdaa12 4895int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4896 struct cfg80211_disassoc_request *req)
9c6bd790 4897{
77fdaa12 4898 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4899 u8 bssid[ETH_ALEN];
6ae16775 4900 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4901
8d8b261a
JB		 4902 /*
4903 * cfg80211 should catch this ... but it's racy since
4904 * we can receive a disassoc frame, process it, hand it
4905 * to cfg80211 while that's in a locked section already
4906 * trying to tell us that the user wants to disconnect.
4907 */
8d61ffa5 4908 if (ifmgd->associated != req->bss)
77fdaa12 4909 return -ENOLINK;
77fdaa12 4910
bdcbd8e0 4911 sdata_info(sdata,
dfa1ad29
CO		 4912 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4913 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4914
e69e95db 4915 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4916 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4917 req->reason_code, !req->local_state_change,
4918 frame_buf);
10f644a4 4919
6ff57cf8
JB		 4920 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4921 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4922
10f644a4
JB		 4923 return 0;
4924}
026331c4 4925
afa762f6 4926void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4927{
4928 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4929
49921859
BG		 4930 /*
4931 * Make sure some work items will not run after this,
4932 * they will not do anything but might not have been
4933 * cancelled when disconnecting.
4934 */
4935 cancel_work_sync(&ifmgd->monitor_work);
4936 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4937 cancel_work_sync(&ifmgd->request_smps_work);
4938 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4939 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 4940 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 4941
8d61ffa5 4942 sdata_lock(sdata);
959867fa
JB		 4943 if (ifmgd->assoc_data) {
4944 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4945 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4946 cfg80211_assoc_timeout(sdata->dev, bss);
4947 }
54e4ffb2
JB		 4948 if (ifmgd->auth_data)
4949 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 4950 spin_lock_bh(&ifmgd->teardown_lock);
4951 if (ifmgd->teardown_skb) {
4952 kfree_skb(ifmgd->teardown_skb);
4953 ifmgd->teardown_skb = NULL;
4954 ifmgd->orig_teardown_skb = NULL;
4955 }
4956 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 4957 del_timer_sync(&ifmgd->timer);
8d61ffa5 4958 sdata_unlock(sdata);
54e4ffb2
JB		 4959}
4960
a97c13c3
JO		 4961void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4962 enum nl80211_cqm_rssi_threshold_event rssi_event,
4963 gfp_t gfp)
4964{
4965 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4966
b5878a2d
JB		 4967 trace_api_cqm_rssi_notify(sdata, rssi_event);
4968
a97c13c3
JO		 4969 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4970}
4971EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
98f03342
JB		 4972
4973void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
4974{
4975 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4976
4977 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
4978
4979 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
4980}
4981EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
Linux kernel - Deliverables
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