]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blame - net/mac80211/mlme.c
projects / mirror_ubuntu-jammy-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
nl80211: ignore HT/VHT capabilities without QoS/WMM
[mirror_ubuntu-jammy-kernel.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");
1160 ieee80211_queue_work(&local->hw,
1161 &ifmgd->csa_connection_drop_work);
1162 mutex_unlock(&local->chanctx_mtx);
1163 mutex_unlock(&local->mtx);
1164 return;
1165 }
1166
1167 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1168
0f791eb4
LC		 1169 if (local->use_chanctx &&
1170 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1171 sdata_info(sdata,
1172 "driver doesn't support chan-switch with channel contexts\n");
1173 ieee80211_queue_work(&local->hw,
1174 &ifmgd->csa_connection_drop_work);
1175 mutex_unlock(&local->chanctx_mtx);
1176 mutex_unlock(&local->mtx);
1177 return;
55de908a
JB		 1178 }
1179
6d027bcc
LC		 1180 ch_switch.timestamp = timestamp;
1181 ch_switch.device_timestamp = device_timestamp;
1182 ch_switch.block_tx = csa_ie.mode;
1183 ch_switch.chandef = csa_ie.chandef;
1184 ch_switch.count = csa_ie.count;
1185
1186 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1187 sdata_info(sdata,
1188 "preparing for channel switch failed, disconnecting\n");
1189 ieee80211_queue_work(&local->hw,
1190 &ifmgd->csa_connection_drop_work);
1191 mutex_unlock(&local->chanctx_mtx);
1192 mutex_unlock(&local->mtx);
1193 return;
1194 }
1195
4c3ebc56
MK		 1196 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1197 chanctx->mode, false);
1198 if (res) {
55de908a 1199 sdata_info(sdata,
4c3ebc56
MK		 1200 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1201 res);
b4f286a1 1202 ieee80211_queue_work(&local->hw,
55de908a 1203 &ifmgd->csa_connection_drop_work);
b4f286a1 1204 mutex_unlock(&local->chanctx_mtx);
4c3ebc56 1205 mutex_unlock(&local->mtx);
55de908a
JB		 1206 return;
1207 }
b4f286a1 1208 mutex_unlock(&local->chanctx_mtx);
55de908a 1209
c46a73f3 1210 sdata->vif.csa_active = true;
4c3ebc56 1211 sdata->csa_chandef = csa_ie.chandef;
59af6928 1212 sdata->csa_block_tx = csa_ie.mode;
55de908a 1213
59af6928 1214 if (sdata->csa_block_tx)
a46992b4
LC		 1215 ieee80211_stop_vif_queues(local, sdata,
1216 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1217 mutex_unlock(&local->mtx);
57eebdf3 1218
2f457293
LC		 1219 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1220 csa_ie.count);
1221
b4f286a1 1222 if (local->ops->channel_switch) {
5ce6e438 1223 /* use driver's channel switch callback */
0f791eb4 1224 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1225 return;
1226 }
1227
1228 /* channel switch handled in software */
c0f17eb9 1229 if (csa_ie.count <= 1)
b4f286a1 1230 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1231 else
cc32abd4 1232 mod_timer(&ifmgd->chswitch_timer,
ff1e417c
LC		 1233 TU_TO_EXP_TIME((csa_ie.count - 1) *
1234 cbss->beacon_interval));
cc32abd4
JB		 1235}
1236
24a4e400
SG		 1237static bool
1238ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1239 struct ieee80211_channel *channel,
1240 const u8 *country_ie, u8 country_ie_len,
1241 const u8 *pwr_constr_elem,
1242 int *chan_pwr, int *pwr_reduction)
cc32abd4 1243{
04b7b2ff
JB		 1244 struct ieee80211_country_ie_triplet *triplet;
1245 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1246 int i, chan_increment;
04b7b2ff 1247 bool have_chan_pwr = false;
cc32abd4 1248
04b7b2ff
JB		 1249 /* Invalid IE */
1250 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1251 return false;
cc32abd4 1252
04b7b2ff
JB		 1253 triplet = (void *)(country_ie + 3);
1254 country_ie_len -= 3;
1255
1256 switch (channel->band) {
1257 default:
1258 WARN_ON_ONCE(1);
1259 /* fall through */
1260 case IEEE80211_BAND_2GHZ:
1261 case IEEE80211_BAND_60GHZ:
1262 chan_increment = 1;
1263 break;
1264 case IEEE80211_BAND_5GHZ:
1265 chan_increment = 4;
1266 break;
cc32abd4 1267 }
04b7b2ff
JB		 1268
1269 /* find channel */
1270 while (country_ie_len >= 3) {
1271 u8 first_channel = triplet->chans.first_channel;
1272
1273 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1274 goto next;
1275
1276 for (i = 0; i < triplet->chans.num_channels; i++) {
1277 if (first_channel + i * chan_increment == chan) {
1278 have_chan_pwr = true;
24a4e400 1279 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1280 break;
1281 }
1282 }
1283 if (have_chan_pwr)
1284 break;
1285
1286 next:
1287 triplet++;
1288 country_ie_len -= 3;
1289 }
1290
a5fee9cb 1291 if (have_chan_pwr && pwr_constr_elem)
24a4e400 1292 *pwr_reduction = *pwr_constr_elem;
a5fee9cb
MB		 1293 else
1294 *pwr_reduction = 0;
1295
24a4e400
SG		 1296 return have_chan_pwr;
1297}
1298
c8d65917
SG		 1299static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1300 struct ieee80211_channel *channel,
1301 const u8 *cisco_dtpc_ie,
1302 int *pwr_level)
1303{
1304 /* From practical testing, the first data byte of the DTPC element
1305 * seems to contain the requested dBm level, and the CLI on Cisco
1306 * APs clearly state the range is -127 to 127 dBm, which indicates
1307 * a signed byte, although it seemingly never actually goes negative.
1308 * The other byte seems to always be zero.
1309 */
1310 *pwr_level = (__s8)cisco_dtpc_ie[4];
1311}
1312
24a4e400
SG		 1313static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1314 struct ieee80211_channel *channel,
1315 struct ieee80211_mgmt *mgmt,
1316 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1317 const u8 *pwr_constr_ie,
1318 const u8 *cisco_dtpc_ie)
24a4e400 1319{
c8d65917
SG		 1320 bool has_80211h_pwr = false, has_cisco_pwr = false;
1321 int chan_pwr = 0, pwr_reduction_80211h = 0;
1322 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1323 int new_ap_level;
a5fee9cb 1324 __le16 capab = mgmt->u.probe_resp.capab_info;
04b7b2ff 1325
a5fee9cb
MB		 1326 if (country_ie &&
1327 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1328 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
24a4e400
SG		 1329 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1330 sdata, channel, country_ie, country_ie_len,
1331 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1332 pwr_level_80211h =
1333 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1334 }
1335
1336 if (cisco_dtpc_ie) {
1337 ieee80211_find_cisco_dtpc(
1338 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1339 has_cisco_pwr = true;
24a4e400 1340 }
04b7b2ff 1341
c8d65917 1342 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1343 return 0;
04b7b2ff 1344
c8d65917
SG		 1345 /* If we have both 802.11h and Cisco DTPC, apply both limits
1346 * by picking the smallest of the two power levels advertised.
1347 */
1348 if (has_80211h_pwr &&
1349 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
1350 sdata_info(sdata,
1351 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1352 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1353 sdata->u.mgd.bssid);
1354 new_ap_level = pwr_level_80211h;
1355 } else { /* has_cisco_pwr is always true here. */
1356 sdata_info(sdata,
1357 "Limiting TX power to %d dBm as advertised by %pM\n",
1358 pwr_level_cisco, sdata->u.mgd.bssid);
1359 new_ap_level = pwr_level_cisco;
1360 }
04b7b2ff 1361
1ea6f9c0
JB		 1362 if (sdata->ap_power_level == new_ap_level)
1363 return 0;
04b7b2ff 1364
1ea6f9c0
JB		 1365 sdata->ap_power_level = new_ap_level;
1366 if (__ieee80211_recalc_txpower(sdata))
1367 return BSS_CHANGED_TXPOWER;
1368 return 0;
cc32abd4
JB		 1369}
1370
965bedad
JB		 1371/* powersave */
1372static void ieee80211_enable_ps(struct ieee80211_local *local,
1373 struct ieee80211_sub_if_data *sdata)
1374{
1375 struct ieee80211_conf *conf = &local->hw.conf;
1376
d5edaedc
JB		 1377 /*
1378 * If we are scanning right now then the parameters will
1379 * take effect when scan finishes.
1380 */
fbe9c429 1381 if (local->scanning)
d5edaedc
JB		 1382 return;
1383
965bedad
JB		 1384 if (conf->dynamic_ps_timeout > 0 &&
1385 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1386 mod_timer(&local->dynamic_ps_timer, jiffies +
1387 msecs_to_jiffies(conf->dynamic_ps_timeout));
1388 } else {
1389 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1390 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1391
2a13052f
JO		 1392 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1393 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1394 return;
1395
1396 conf->flags |= IEEE80211_CONF_PS;
1397 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1398 }
1399}
1400
1401static void ieee80211_change_ps(struct ieee80211_local *local)
1402{
1403 struct ieee80211_conf *conf = &local->hw.conf;
1404
1405 if (local->ps_sdata) {
965bedad
JB		 1406 ieee80211_enable_ps(local, local->ps_sdata);
1407 } else if (conf->flags & IEEE80211_CONF_PS) {
1408 conf->flags &= ~IEEE80211_CONF_PS;
1409 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1410 del_timer_sync(&local->dynamic_ps_timer);
1411 cancel_work_sync(&local->dynamic_ps_enable_work);
1412 }
1413}
1414
808118cb
JY		 1415static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1416{
1417 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1418 struct sta_info *sta = NULL;
c2c98fde 1419 bool authorized = false;
808118cb
JY		 1420
1421 if (!mgd->powersave)
1422 return false;
1423
05cb9108
JB		 1424 if (mgd->broken_ap)
1425 return false;
1426
808118cb
JY		 1427 if (!mgd->associated)
1428 return false;
1429
392b9ffb 1430 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1431 return false;
1432
989c6505 1433 if (!mgd->have_beacon)
ce857888
AB		 1434 return false;
1435
808118cb
JY		 1436 rcu_read_lock();
1437 sta = sta_info_get(sdata, mgd->bssid);
1438 if (sta)
c2c98fde 1439 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1440 rcu_read_unlock();
1441
c2c98fde 1442 return authorized;
808118cb
JY		 1443}
1444
965bedad 1445/* need to hold RTNL or interface lock */
10f644a4 1446void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1447{
1448 struct ieee80211_sub_if_data *sdata, *found = NULL;
1449 int count = 0;
195e294d 1450 int timeout;
965bedad
JB		 1451
1452 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1453 local->ps_sdata = NULL;
1454 return;
1455 }
1456
1457 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1458 if (!ieee80211_sdata_running(sdata))
965bedad 1459 continue;
8c7914de
RM		 1460 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1461 /* If an AP vif is found, then disable PS
1462 * by setting the count to zero thereby setting
1463 * ps_sdata to NULL.
1464 */
1465 count = 0;
1466 break;
1467 }
965bedad
JB		 1468 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1469 continue;
1470 found = sdata;
1471 count++;
1472 }
1473
808118cb 1474 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1475 s32 beaconint_us;
1476
1477 if (latency < 0)
ed77134b 1478 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1479
1480 beaconint_us = ieee80211_tu_to_usec(
1481 found->vif.bss_conf.beacon_int);
1482
ff616381 1483 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1484 if (timeout < 0) {
1485 /*
ff616381
JO		 1486 * Go to full PSM if the user configures a very low
1487 * latency requirement.
0ab82b04
EP		 1488 * The 2000 second value is there for compatibility
1489 * until the PM_QOS_NETWORK_LATENCY is configured
1490 * with real values.
195e294d 1491 */
0ab82b04
EP		 1492 if (latency > (1900 * USEC_PER_MSEC) &&
1493 latency != (2000 * USEC_PER_SEC))
195e294d 1494 timeout = 0;
ff616381
JO		 1495 else
1496 timeout = 100;
195e294d 1497 }
09b85568 1498 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1499
04fe2037 1500 if (beaconint_us > latency) {
10f644a4 1501 local->ps_sdata = NULL;
04fe2037 1502 } else {
04fe2037 1503 int maxslp = 1;
826262c3 1504 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1505
1506 /* If the TIM IE is invalid, pretend the value is 1 */
1507 if (!dtimper)
1508 dtimper = 1;
1509 else if (dtimper > 1)
04fe2037
JB		 1510 maxslp = min_t(int, dtimper,
1511 latency / beaconint_us);
1512
9ccebe61 1513 local->hw.conf.max_sleep_period = maxslp;
56007a02 1514 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1515 local->ps_sdata = found;
04fe2037 1516 }
10f644a4 1517 } else {
965bedad 1518 local->ps_sdata = NULL;
10f644a4 1519 }
965bedad
JB		 1520
1521 ieee80211_change_ps(local);
1522}
1523
ab095877
EP		 1524void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1525{
1526 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1527
1528 if (sdata->vif.bss_conf.ps != ps_allowed) {
1529 sdata->vif.bss_conf.ps = ps_allowed;
1530 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1531 }
1532}
1533
965bedad
JB		 1534void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1535{
1536 struct ieee80211_local *local =
1537 container_of(work, struct ieee80211_local,
1538 dynamic_ps_disable_work);
1539
1540 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1541 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1542 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1543 }
1544
1545 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1546 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1547 IEEE80211_QUEUE_STOP_REASON_PS,
1548 false);
965bedad
JB		 1549}
1550
1551void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1552{
1553 struct ieee80211_local *local =
1554 container_of(work, struct ieee80211_local,
1555 dynamic_ps_enable_work);
1556 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1557 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1558 unsigned long flags;
1559 int q;
965bedad
JB		 1560
1561 /* can only happen when PS was just disabled anyway */
1562 if (!sdata)
1563 return;
1564
5e34069c
CL		 1565 ifmgd = &sdata->u.mgd;
1566
965bedad
JB		 1567 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1568 return;
1569
09b85568 1570 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1571 /* don't enter PS if TX frames are pending */
1572 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1573 mod_timer(&local->dynamic_ps_timer, jiffies +
1574 msecs_to_jiffies(
1575 local->hw.conf.dynamic_ps_timeout));
1576 return;
1577 }
77b7023a
AN		 1578
1579 /*
1580 * transmission can be stopped by others which leads to
1581 * dynamic_ps_timer expiry. Postpone the ps timer if it
1582 * is not the actual idle state.
1583 */
1584 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1585 for (q = 0; q < local->hw.queues; q++) {
1586 if (local->queue_stop_reasons[q]) {
1587 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1588 flags);
1589 mod_timer(&local->dynamic_ps_timer, jiffies +
1590 msecs_to_jiffies(
1591 local->hw.conf.dynamic_ps_timeout));
1592 return;
1593 }
1594 }
1595 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1596 }
1ddc2867 1597
375177bf 1598 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1599 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1600 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1601 mod_timer(&local->dynamic_ps_timer, jiffies +
1602 msecs_to_jiffies(
1603 local->hw.conf.dynamic_ps_timeout));
a1598383 1604 } else {
e8306f98
VN		 1605 ieee80211_send_nullfunc(local, sdata, 1);
1606 /* Flush to get the tx status of nullfunc frame */
3b24f4c6 1607 ieee80211_flush_queues(local, sdata, false);
e8306f98 1608 }
f3e85b9e
VN		 1609 }
1610
2a13052f
JO		 1611 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1612 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1613 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1614 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1615 local->hw.conf.flags |= IEEE80211_CONF_PS;
1616 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1617 }
965bedad
JB		 1618}
1619
1620void ieee80211_dynamic_ps_timer(unsigned long data)
1621{
1622 struct ieee80211_local *local = (void *) data;
1623
78f1a8b7 1624 if (local->quiescing || local->suspended)
5bb644a0
JB		 1625 return;
1626
42935eca 1627 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1628}
1629
164eb02d
SW		 1630void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1631{
1632 struct delayed_work *delayed_work =
1633 container_of(work, struct delayed_work, work);
1634 struct ieee80211_sub_if_data *sdata =
1635 container_of(delayed_work, struct ieee80211_sub_if_data,
1636 dfs_cac_timer_work);
d2859df5 1637 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1638
34a3740d
JB		 1639 mutex_lock(&sdata->local->mtx);
1640 if (sdata->wdev.cac_started) {
1641 ieee80211_vif_release_channel(sdata);
1642 cfg80211_cac_event(sdata->dev, &chandef,
1643 NL80211_RADAR_CAC_FINISHED,
1644 GFP_KERNEL);
1645 }
1646 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1647}
1648
02219b3a
JB		 1649static bool
1650__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1651{
1652 struct ieee80211_local *local = sdata->local;
1653 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
cc72f6e2 1654 bool ret = false;
02219b3a
JB		 1655 int ac;
1656
1657 if (local->hw.queues < IEEE80211_NUM_ACS)
1658 return false;
1659
1660 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1661 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1662 int non_acm_ac;
1663 unsigned long now = jiffies;
1664
1665 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1666 tx_tspec->admitted_time &&
1667 time_after(now, tx_tspec->time_slice_start + HZ)) {
1668 tx_tspec->consumed_tx_time = 0;
1669 tx_tspec->time_slice_start = now;
1670
1671 if (tx_tspec->downgraded)
1672 tx_tspec->action =
1673 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1674 }
1675
1676 switch (tx_tspec->action) {
1677 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1678 /* take the original parameters */
1679 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1680 sdata_err(sdata,
1681 "failed to set TX queue parameters for queue %d\n",
1682 ac);
1683 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1684 tx_tspec->downgraded = false;
1685 ret = true;
1686 break;
1687 case TX_TSPEC_ACTION_DOWNGRADE:
1688 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1689 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1690 ret = true;
1691 break;
1692 }
1693 /* downgrade next lower non-ACM AC */
1694 for (non_acm_ac = ac + 1;
1695 non_acm_ac < IEEE80211_NUM_ACS;
1696 non_acm_ac++)
1697 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1698 break;
1699 /* The loop will result in using BK even if it requires
1700 * admission control, such configuration makes no sense
1701 * and we have to transmit somehow - the AC selection
1702 * does the same thing.
1703 */
1704 if (drv_conf_tx(local, sdata, ac,
1705 &sdata->tx_conf[non_acm_ac]))
1706 sdata_err(sdata,
1707 "failed to set TX queue parameters for queue %d\n",
1708 ac);
1709 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1710 ret = true;
1711 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1712 tx_tspec->time_slice_start + HZ - now + 1);
1713 break;
1714 case TX_TSPEC_ACTION_NONE:
1715 /* nothing now */
1716 break;
1717 }
1718 }
1719
1720 return ret;
1721}
1722
1723void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1724{
1725 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1726 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1727}
1728
1729static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1730{
1731 struct ieee80211_sub_if_data *sdata;
1732
1733 sdata = container_of(work, struct ieee80211_sub_if_data,
1734 u.mgd.tx_tspec_wk.work);
1735 ieee80211_sta_handle_tspec_ac_params(sdata);
1736}
1737
60f8b39c 1738/* MLME */
7d25745d 1739static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1740 struct ieee80211_sub_if_data *sdata,
4a3cb702 1741 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1742{
f0706e82 1743 struct ieee80211_tx_queue_params params;
4ced3f74 1744 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1745 size_t left;
1746 int count;
4a3cb702
JB		 1747 const u8 *pos;
1748 u8 uapsd_queues = 0;
f0706e82 1749
e1b3ec1a 1750 if (!local->ops->conf_tx)
7d25745d 1751 return false;
e1b3ec1a 1752
32c5057b 1753 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1754 return false;
3434fbd3
JB		 1755
1756 if (!wmm_param)
7d25745d 1757 return false;
3434fbd3 1758
f0706e82 1759 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1760 return false;
ab13315a
KV		 1761
1762 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1763 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1764
f0706e82 1765 count = wmm_param[6] & 0x0f;
46900298 1766 if (count == ifmgd->wmm_last_param_set)
7d25745d 1767 return false;
46900298 1768 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1769
1770 pos = wmm_param + 8;
1771 left = wmm_param_len - 8;
1772
1773 memset(&params, 0, sizeof(params));
1774
00e96dec 1775 sdata->wmm_acm = 0;
f0706e82
JB		 1776 for (; left >= 4; left -= 4, pos += 4) {
1777 int aci = (pos[0] >> 5) & 0x03;
1778 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1779 bool uapsd = false;
f0706e82
JB		 1780 int queue;
1781
1782 switch (aci) {
0eeb59fe 1783 case 1: /* AC_BK */
e100bb64 1784 queue = 3;
988c0f72 1785 if (acm)
00e96dec 1786 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1787 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1788 uapsd = true;
f0706e82 1789 break;
0eeb59fe 1790 case 2: /* AC_VI */
e100bb64 1791 queue = 1;
988c0f72 1792 if (acm)
00e96dec 1793 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1794 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1795 uapsd = true;
f0706e82 1796 break;
0eeb59fe 1797 case 3: /* AC_VO */
e100bb64 1798 queue = 0;
988c0f72 1799 if (acm)
00e96dec 1800 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1801 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1802 uapsd = true;
f0706e82 1803 break;
0eeb59fe 1804 case 0: /* AC_BE */
f0706e82 1805 default:
e100bb64 1806 queue = 2;
988c0f72 1807 if (acm)
00e96dec 1808 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1809 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1810 uapsd = true;
f0706e82
JB		 1811 break;
1812 }
1813
1814 params.aifs = pos[0] & 0x0f;
1815 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1816 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1817 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1818 params.acm = acm;
ab13315a
KV		 1819 params.uapsd = uapsd;
1820
bdcbd8e0 1821 mlme_dbg(sdata,
02219b3a 1822 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
bdcbd8e0
JB		 1823 queue, aci, acm,
1824 params.aifs, params.cw_min, params.cw_max,
02219b3a
JB		 1825 params.txop, params.uapsd,
1826 ifmgd->tx_tspec[queue].downgraded);
f6f3def3 1827 sdata->tx_conf[queue] = params;
02219b3a
JB		 1828 if (!ifmgd->tx_tspec[queue].downgraded &&
1829 drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1830 sdata_err(sdata,
1831 "failed to set TX queue parameters for queue %d\n",
1832 queue);
f0706e82 1833 }
e1b3ec1a
SG		 1834
1835 /* enable WMM or activate new settings */
4ced3f74 1836 sdata->vif.bss_conf.qos = true;
7d25745d 1837 return true;
f0706e82
JB		 1838}
1839
925e64c3
SG		 1840static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1841{
1842 lockdep_assert_held(&sdata->local->mtx);
1843
392b9ffb 1844 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1845 ieee80211_run_deferred_scan(sdata->local);
1846}
1847
1848static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1849{
1850 mutex_lock(&sdata->local->mtx);
1851 __ieee80211_stop_poll(sdata);
1852 mutex_unlock(&sdata->local->mtx);
1853}
1854
7a5158ef
JB		 1855static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1856 u16 capab, bool erp_valid, u8 erp)
5628221c 1857{
bda3933a 1858 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1859 u32 changed = 0;
7a5158ef
JB		 1860 bool use_protection;
1861 bool use_short_preamble;
1862 bool use_short_slot;
1863
1864 if (erp_valid) {
1865 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1866 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1867 } else {
1868 use_protection = false;
1869 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1870 }
1871
1872 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1873 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1874 use_short_slot = true;
5628221c 1875
471b3efd 1876 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1877 bss_conf->use_cts_prot = use_protection;
1878 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1879 }
7e9ed188 1880
d43c7b37 1881 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1882 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1883 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1884 }
d9430a32 1885
7a5158ef 1886 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1887 bss_conf->use_short_slot = use_short_slot;
1888 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1889 }
1890
1891 return changed;
1892}
1893
f698d856 1894static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1895 struct cfg80211_bss *cbss,
ae5eb026 1896 u32 bss_info_changed)
f0706e82 1897{
0c1ad2ca 1898 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1899 struct ieee80211_local *local = sdata->local;
68542962 1900 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1901
ae5eb026 1902 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1903 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1904 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1905
7ccc8bd7 1906 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1907 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1908
0c1ad2ca
JB		 1909 sdata->u.mgd.associated = cbss;
1910 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1911
17e4ec14
JM		 1912 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1913
488dd7b5 1914 if (sdata->vif.p2p) {
9caf0364 1915 const struct cfg80211_bss_ies *ies;
488dd7b5 1916
9caf0364
JB		 1917 rcu_read_lock();
1918 ies = rcu_dereference(cbss->ies);
1919 if (ies) {
9caf0364
JB		 1920 int ret;
1921
1922 ret = cfg80211_get_p2p_attr(
1923 ies->data, ies->len,
1924 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1925 (u8 *) &bss_conf->p2p_noa_attr,
1926 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1927 if (ret >= 2) {
67baf663
JD		 1928 sdata->u.mgd.p2p_noa_index =
1929 bss_conf->p2p_noa_attr.index;
9caf0364 1930 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1931 }
488dd7b5 1932 }
9caf0364 1933 rcu_read_unlock();
488dd7b5
JB		 1934 }
1935
b291ba11 1936 /* just to be sure */
925e64c3 1937 ieee80211_stop_poll(sdata);
b291ba11 1938
9ac19a90 1939 ieee80211_led_assoc(local, 1);
9306102e 1940
989c6505 1941 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1942 /*
1943 * If the AP is buggy we may get here with no DTIM period
1944 * known, so assume it's 1 which is the only safe assumption
1945 * in that case, although if the TIM IE is broken powersave
1946 * probably just won't work at all.
1947 */
1948 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1949 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1950 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1951 } else {
817cee76 1952 bss_conf->beacon_rate = NULL;
e5b900d2 1953 bss_conf->dtim_period = 0;
826262c3 1954 }
e5b900d2 1955
68542962 1956 bss_conf->assoc = 1;
9cef8737 1957
a97c13c3 1958 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1959 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1960 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1961 bss_info_changed |= BSS_CHANGED_CQM;
1962
68542962 1963 /* Enable ARP filtering */
0f19b41e 1964 if (bss_conf->arp_addr_cnt)
68542962 1965 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1966
ae5eb026 1967 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1968
056508dc
JB		 1969 mutex_lock(&local->iflist_mtx);
1970 ieee80211_recalc_ps(local, -1);
1971 mutex_unlock(&local->iflist_mtx);
e0cb686f 1972
04ecd257 1973 ieee80211_recalc_smps(sdata);
ab095877
EP		 1974 ieee80211_recalc_ps_vif(sdata);
1975
9ac19a90 1976 netif_carrier_on(sdata->dev);
f0706e82
JB		 1977}
1978
e69e95db 1979static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1980 u16 stype, u16 reason, bool tx,
1981 u8 *frame_buf)
aa458d17 1982{
46900298 1983 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1984 struct ieee80211_local *local = sdata->local;
3cc5240b 1985 u32 changed = 0;
aa458d17 1986
8d61ffa5 1987 sdata_assert_lock(sdata);
77fdaa12 1988
37ad3888
JB		 1989 if (WARN_ON_ONCE(tx && !frame_buf))
1990 return;
1991
b291ba11
JB		 1992 if (WARN_ON(!ifmgd->associated))
1993 return;
1994
79543d8e
DS		 1995 ieee80211_stop_poll(sdata);
1996
77fdaa12 1997 ifmgd->associated = NULL;
aa458d17
TW		 1998 netif_carrier_off(sdata->dev);
1999
88bc40e8
EP		 2000 /*
2001 * if we want to get out of ps before disassoc (why?) we have
2002 * to do it before sending disassoc, as otherwise the null-packet
2003 * won't be valid.
2004 */
2005 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
2006 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
2007 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2008 }
2009 local->ps_sdata = NULL;
2010
ab095877
EP		 2011 /* disable per-vif ps */
2012 ieee80211_recalc_ps_vif(sdata);
2013
14f2ae83
EG		 2014 /* make sure ongoing transmission finishes */
2015 synchronize_net();
2016
3b24f4c6
EG		 2017 /*
2018 * drop any frame before deauth/disassoc, this can be data or
2019 * management frame. Since we are disconnecting, we should not
2020 * insist sending these frames which can take time and delay
2021 * the disconnection and possible the roaming.
2022 */
f823981e 2023 if (tx)
3b24f4c6 2024 ieee80211_flush_queues(local, sdata, true);
f823981e 2025
37ad3888
JB		 2026 /* deauthenticate/disassociate now */
2027 if (tx || frame_buf)
88a9e31c
EP		 2028 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2029 reason, tx, frame_buf);
37ad3888 2030
3b24f4c6 2031 /* flush out frame - make sure the deauth was actually sent */
37ad3888 2032 if (tx)
3b24f4c6 2033 ieee80211_flush_queues(local, sdata, false);
37ad3888 2034
88a9e31c
EP		 2035 /* clear bssid only after building the needed mgmt frames */
2036 memset(ifmgd->bssid, 0, ETH_ALEN);
2037
37ad3888 2038 /* remove AP and TDLS peers */
d34ba216 2039 sta_info_flush(sdata);
37ad3888
JB		 2040
2041 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2042 changed |= ieee80211_reset_erp_info(sdata);
2043
f5e5bf25 2044 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2045 changed |= BSS_CHANGED_ASSOC;
2046 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2047
67baf663
JD		 2048 ifmgd->p2p_noa_index = -1;
2049 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2050 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2051
dd5ecfea 2052 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2053 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2054 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2055 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2056 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 2057
1ea6f9c0 2058 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2059
520eb820
KV		 2060 del_timer_sync(&local->dynamic_ps_timer);
2061 cancel_work_sync(&local->dynamic_ps_enable_work);
2062
68542962 2063 /* Disable ARP filtering */
0f19b41e 2064 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2065 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2066
3abead59
JB		 2067 sdata->vif.bss_conf.qos = false;
2068 changed |= BSS_CHANGED_QOS;
2069
0aaffa9b
JB		 2070 /* The BSSID (not really interesting) and HT changed */
2071 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2072 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2073
3abead59
JB		 2074 /* disassociated - set to defaults now */
2075 ieee80211_set_wmm_default(sdata, false);
2076
b9dcf712
JB		 2077 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2078 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2079 del_timer_sync(&sdata->u.mgd.timer);
2080 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2081
826262c3 2082 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2083 sdata->vif.bss_conf.beacon_rate = NULL;
2084
989c6505 2085 ifmgd->have_beacon = false;
826262c3 2086
028e8da0 2087 ifmgd->flags = 0;
34a3740d 2088 mutex_lock(&local->mtx);
028e8da0 2089 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2090
2091 sdata->vif.csa_active = false;
0c21e632 2092 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2093 if (sdata->csa_block_tx) {
2094 ieee80211_wake_vif_queues(local, sdata,
2095 IEEE80211_QUEUE_STOP_REASON_CSA);
2096 sdata->csa_block_tx = false;
2097 }
34a3740d 2098 mutex_unlock(&local->mtx);
2475b1cc 2099
02219b3a
JB		 2100 /* existing TX TSPEC sessions no longer exist */
2101 memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec));
2102 cancel_delayed_work_sync(&ifmgd->tx_tspec_wk);
2103
2475b1cc 2104 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 2105}
f0706e82 2106
3cf335d5
KV		 2107void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
2108 struct ieee80211_hdr *hdr)
2109{
2110 /*
2111 * We can postpone the mgd.timer whenever receiving unicast frames
2112 * from AP because we know that the connection is working both ways
2113 * at that time. But multicast frames (and hence also beacons) must
2114 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 2115 * data idle periods for sending the periodic probe request to the
2116 * AP we're connected to.
3cf335d5 2117 */
b291ba11
JB		 2118 if (is_multicast_ether_addr(hdr->addr1))
2119 return;
2120
be099e82 2121 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 2122}
f0706e82 2123
4e5ff376
FF		 2124static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
2125{
2126 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 2127 struct ieee80211_local *local = sdata->local;
4e5ff376 2128
133d40f9 2129 mutex_lock(&local->mtx);
392b9ffb
SG		 2130 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
2131 goto out;
4e5ff376 2132
925e64c3 2133 __ieee80211_stop_poll(sdata);
133d40f9
SG		 2134
2135 mutex_lock(&local->iflist_mtx);
2136 ieee80211_recalc_ps(local, -1);
2137 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 2138
2139 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 2140 goto out;
4e5ff376
FF		 2141
2142 /*
2143 * We've received a probe response, but are not sure whether
2144 * we have or will be receiving any beacons or data, so let's
2145 * schedule the timers again, just in case.
2146 */
2147 ieee80211_sta_reset_beacon_monitor(sdata);
2148
2149 mod_timer(&ifmgd->conn_mon_timer,
2150 round_jiffies_up(jiffies +
2151 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 2152out:
133d40f9 2153 mutex_unlock(&local->mtx);
4e5ff376
FF		 2154}
2155
02219b3a
JB		 2156static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata,
2157 struct ieee80211_hdr *hdr,
2158 u16 tx_time)
2159{
2160 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2161 u16 tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
2162 int ac = ieee80211_ac_from_tid(tid);
2163 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
2164 unsigned long now = jiffies;
2165
2166 if (likely(!tx_tspec->admitted_time))
2167 return;
2168
2169 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
2170 tx_tspec->consumed_tx_time = 0;
2171 tx_tspec->time_slice_start = now;
2172
2173 if (tx_tspec->downgraded) {
2174 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
2175 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2176 }
2177 }
2178
2179 if (tx_tspec->downgraded)
2180 return;
2181
2182 tx_tspec->consumed_tx_time += tx_time;
2183
2184 if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) {
2185 tx_tspec->downgraded = true;
2186 tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE;
2187 schedule_delayed_work(&ifmgd->tx_tspec_wk, 0);
2188 }
2189}
2190
4e5ff376 2191void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
02219b3a 2192 struct ieee80211_hdr *hdr, bool ack, u16 tx_time)
4e5ff376 2193{
02219b3a
JB		 2194 ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time);
2195
75706d0e 2196 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 2197 return;
2198
4e5ff376
FF		 2199 if (ieee80211_is_nullfunc(hdr->frame_control) &&
2200 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 2201 if (ack)
cab1c7fd 2202 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 2203 else
2204 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 2205 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 2206 return;
4e5ff376 2207 }
cab1c7fd
WD		 2208
2209 if (ack)
2210 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 2211}
2212
a43abf29
ML		 2213static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
2214{
2215 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2216 const u8 *ssid;
f01a067d 2217 u8 *dst = ifmgd->associated->bssid;
180205bd 2218 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 2219
2220 /*
2221 * Try sending broadcast probe requests for the last three
2222 * probe requests after the first ones failed since some
2223 * buggy APs only support broadcast probe requests.
2224 */
2225 if (ifmgd->probe_send_count >= unicast_limit)
2226 dst = NULL;
a43abf29 2227
4e5ff376
FF		 2228 /*
2229 * When the hardware reports an accurate Tx ACK status, it's
2230 * better to send a nullfunc frame instead of a probe request,
2231 * as it will kick us off the AP quickly if we aren't associated
2232 * anymore. The timeout will be reset if the frame is ACKed by
2233 * the AP.
2234 */
992e68bf
SD		 2235 ifmgd->probe_send_count++;
2236
04ac3c0e
FF		 2237 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
2238 ifmgd->nullfunc_failed = false;
4e5ff376 2239 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 2240 } else {
88c868c4
SG		 2241 int ssid_len;
2242
9caf0364 2243 rcu_read_lock();
4e5ff376 2244 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 2245 if (WARN_ON_ONCE(ssid == NULL))
2246 ssid_len = 0;
2247 else
2248 ssid_len = ssid[1];
2249
a344d677
JB		 2250 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
2251 ssid + 2, ssid_len, NULL,
1672c0e3 2252 0, (u32) -1, true, 0,
55de908a 2253 ifmgd->associated->channel, false);
9caf0364 2254 rcu_read_unlock();
4e5ff376 2255 }
a43abf29 2256
180205bd 2257 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 2258 run_again(sdata, ifmgd->probe_timeout);
a43abf29
ML		 2259}
2260
b291ba11
JB		 2261static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
2262 bool beacon)
04de8381 2263{
04de8381 2264 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 2265 bool already = false;
34bfc411 2266
9607e6b6 2267 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 2268 return;
2269
8d61ffa5 2270 sdata_lock(sdata);
77fdaa12
JB		 2271
2272 if (!ifmgd->associated)
2273 goto out;
2274
133d40f9
SG		 2275 mutex_lock(&sdata->local->mtx);
2276
2277 if (sdata->local->tmp_channel || sdata->local->scanning) {
2278 mutex_unlock(&sdata->local->mtx);
2279 goto out;
2280 }
2281
a13fbe54 2282 if (beacon) {
bdcbd8e0 2283 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 2284 "detected beacon loss from AP (missed %d beacons) - probing\n",
2285 beacon_loss_count);
bdcbd8e0 2286
98f03342 2287 ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL);
a13fbe54 2288 }
04de8381 2289
b291ba11
JB		 2290 /*
2291 * The driver/our work has already reported this event or the
2292 * connection monitoring has kicked in and we have already sent
2293 * a probe request. Or maybe the AP died and the driver keeps
2294 * reporting until we disassociate...
2295 *
2296 * In either case we have to ignore the current call to this
2297 * function (except for setting the correct probe reason bit)
2298 * because otherwise we would reset the timer every time and
2299 * never check whether we received a probe response!
2300 */
392b9ffb 2301 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 2302 already = true;
2303
12b5f34d
EP		 2304 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
2305
133d40f9
SG		 2306 mutex_unlock(&sdata->local->mtx);
2307
b291ba11
JB		 2308 if (already)
2309 goto out;
2310
4e751843
JB		 2311 mutex_lock(&sdata->local->iflist_mtx);
2312 ieee80211_recalc_ps(sdata->local, -1);
2313 mutex_unlock(&sdata->local->iflist_mtx);
2314
a43abf29
ML		 2315 ifmgd->probe_send_count = 0;
2316 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 2317 out:
8d61ffa5 2318 sdata_unlock(sdata);
04de8381
KV		 2319}
2320
a619a4c0
JO		 2321struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
2322 struct ieee80211_vif *vif)
2323{
2324 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2325 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 2326 struct cfg80211_bss *cbss;
a619a4c0
JO		 2327 struct sk_buff *skb;
2328 const u8 *ssid;
88c868c4 2329 int ssid_len;
a619a4c0
JO		 2330
2331 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
2332 return NULL;
2333
8d61ffa5 2334 sdata_assert_lock(sdata);
a619a4c0 2335
d9b3b28b
EP		 2336 if (ifmgd->associated)
2337 cbss = ifmgd->associated;
2338 else if (ifmgd->auth_data)
2339 cbss = ifmgd->auth_data->bss;
2340 else if (ifmgd->assoc_data)
2341 cbss = ifmgd->assoc_data->bss;
2342 else
a619a4c0
JO		 2343 return NULL;
2344
9caf0364 2345 rcu_read_lock();
d9b3b28b 2346 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2347 if (WARN_ON_ONCE(ssid == NULL))
2348 ssid_len = 0;
2349 else
2350 ssid_len = ssid[1];
2351
a344d677 2352 skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid,
55de908a 2353 (u32) -1, cbss->channel,
6b77863b 2354 ssid + 2, ssid_len,
85a237fe 2355 NULL, 0, true);
9caf0364 2356 rcu_read_unlock();
a619a4c0
JO		 2357
2358 return skb;
2359}
2360EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2361
eef9e54c 2362static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2363{
59af6928 2364 struct ieee80211_local *local = sdata->local;
1e4dcd01 2365 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2366 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2367
8d61ffa5 2368 sdata_lock(sdata);
1e4dcd01 2369 if (!ifmgd->associated) {
8d61ffa5 2370 sdata_unlock(sdata);
1e4dcd01
JO		 2371 return;
2372 }
2373
37ad3888
JB		 2374 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2375 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2376 true, frame_buf);
59af6928 2377 mutex_lock(&local->mtx);
7578d575 2378 sdata->vif.csa_active = false;
0c21e632 2379 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2380 if (sdata->csa_block_tx) {
2381 ieee80211_wake_vif_queues(local, sdata,
2382 IEEE80211_QUEUE_STOP_REASON_CSA);
2383 sdata->csa_block_tx = false;
2384 }
59af6928 2385 mutex_unlock(&local->mtx);
7da7cc1d 2386
6ff57cf8
JB		 2387 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2388 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2389 sdata_unlock(sdata);
1e4dcd01
JO		 2390}
2391
cc74c0c7 2392static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2393{
2394 struct ieee80211_sub_if_data *sdata =
2395 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2396 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2397 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2398 struct sta_info *sta;
2399
2400 if (ifmgd->associated) {
30fa9047 2401 rcu_read_lock();
a85e1d55
PS		 2402 sta = sta_info_get(sdata, ifmgd->bssid);
2403 if (sta)
2404 sta->beacon_loss_count++;
30fa9047 2405 rcu_read_unlock();
a85e1d55 2406 }
b291ba11 2407
682bd38b 2408 if (ifmgd->connection_loss) {
882a7c69
JB		 2409 sdata_info(sdata, "Connection to AP %pM lost\n",
2410 ifmgd->bssid);
eef9e54c 2411 __ieee80211_disconnect(sdata);
882a7c69 2412 } else {
1e4dcd01 2413 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2414 }
2415}
2416
2417static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2418{
2419 struct ieee80211_sub_if_data *sdata =
2420 container_of(work, struct ieee80211_sub_if_data,
2421 u.mgd.csa_connection_drop_work);
2422
eef9e54c 2423 __ieee80211_disconnect(sdata);
b291ba11
JB		 2424}
2425
04de8381
KV		 2426void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2427{
2428 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2429 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2430
b5878a2d
JB		 2431 trace_api_beacon_loss(sdata);
2432
682bd38b 2433 sdata->u.mgd.connection_loss = false;
1e4dcd01 2434 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2435}
2436EXPORT_SYMBOL(ieee80211_beacon_loss);
2437
1e4dcd01
JO		 2438void ieee80211_connection_loss(struct ieee80211_vif *vif)
2439{
2440 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2441 struct ieee80211_hw *hw = &sdata->local->hw;
2442
b5878a2d
JB		 2443 trace_api_connection_loss(sdata);
2444
682bd38b 2445 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2446 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2447}
2448EXPORT_SYMBOL(ieee80211_connection_loss);
2449
2450
66e67e41
JB		 2451static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2452 bool assoc)
2453{
2454 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2455
8d61ffa5 2456 sdata_assert_lock(sdata);
66e67e41 2457
66e67e41 2458 if (!assoc) {
c1e140bf
EG		 2459 /*
2460 * we are not authenticated yet, the only timer that could be
2461 * running is the timeout for the authentication response which
2462 * which is not relevant anymore.
2463 */
2464 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2465 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2466
2467 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2468 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2469 sdata->u.mgd.flags = 0;
34a3740d 2470 mutex_lock(&sdata->local->mtx);
55de908a 2471 ieee80211_vif_release_channel(sdata);
34a3740d 2472 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2473 }
2474
5b112d3d 2475 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2476 kfree(auth_data);
2477 sdata->u.mgd.auth_data = NULL;
2478}
2479
2480static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2481 struct ieee80211_mgmt *mgmt, size_t len)
2482{
1672c0e3 2483 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2484 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2485 u8 *pos;
2486 struct ieee802_11_elems elems;
1672c0e3 2487 u32 tx_flags = 0;
66e67e41
JB		 2488
2489 pos = mgmt->u.auth.variable;
b2e506bf 2490 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2491 if (!elems.challenge)
2492 return;
2493 auth_data->expected_transaction = 4;
a1845fc7 2494 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2495 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2496 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2497 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2498 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2499 elems.challenge - 2, elems.challenge_len + 2,
2500 auth_data->bss->bssid, auth_data->bss->bssid,
2501 auth_data->key, auth_data->key_len,
1672c0e3 2502 auth_data->key_idx, tx_flags);
66e67e41
JB		 2503}
2504
8d61ffa5
JB		 2505static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2506 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2507{
2508 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2509 u8 bssid[ETH_ALEN];
2510 u16 auth_alg, auth_transaction, status_code;
2511 struct sta_info *sta;
2512
8d61ffa5 2513 sdata_assert_lock(sdata);
66e67e41
JB		 2514
2515 if (len < 24 + 6)
8d61ffa5 2516 return;
66e67e41
JB		 2517
2518 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2519 return;
66e67e41
JB		 2520
2521 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2522
b203ca39 2523 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2524 return;
66e67e41
JB		 2525
2526 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2527 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2528 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2529
2530 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2531 auth_transaction != ifmgd->auth_data->expected_transaction) {
2532 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2533 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2534 auth_transaction,
2535 ifmgd->auth_data->expected_transaction);
8d61ffa5 2536 return;
0f4126e8 2537 }
66e67e41
JB		 2538
2539 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2540 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2541 mgmt->sa, status_code);
dac211ec 2542 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2543 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2544 return;
66e67e41
JB		 2545 }
2546
2547 switch (ifmgd->auth_data->algorithm) {
2548 case WLAN_AUTH_OPEN:
2549 case WLAN_AUTH_LEAP:
2550 case WLAN_AUTH_FT:
6b8ece3a 2551 case WLAN_AUTH_SAE:
66e67e41
JB		 2552 break;
2553 case WLAN_AUTH_SHARED_KEY:
2554 if (ifmgd->auth_data->expected_transaction != 4) {
2555 ieee80211_auth_challenge(sdata, mgmt, len);
2556 /* need another frame */
8d61ffa5 2557 return;
66e67e41
JB		 2558 }
2559 break;
2560 default:
2561 WARN_ONCE(1, "invalid auth alg %d",
2562 ifmgd->auth_data->algorithm);
8d61ffa5 2563 return;
66e67e41
JB		 2564 }
2565
bdcbd8e0 2566 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2567 ifmgd->auth_data->done = true;
2568 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2569 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2570 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2571
6b8ece3a
JM		 2572 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2573 ifmgd->auth_data->expected_transaction != 2) {
2574 /*
2575 * Report auth frame to user space for processing since another
2576 * round of Authentication frames is still needed.
2577 */
6ff57cf8 2578 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2579 return;
6b8ece3a
JM		 2580 }
2581
66e67e41
JB		 2582 /* move station state to auth */
2583 mutex_lock(&sdata->local->sta_mtx);
2584 sta = sta_info_get(sdata, bssid);
2585 if (!sta) {
2586 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2587 goto out_err;
2588 }
2589 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2590 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2591 goto out_err;
2592 }
2593 mutex_unlock(&sdata->local->sta_mtx);
2594
6ff57cf8 2595 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2596 return;
66e67e41
JB		 2597 out_err:
2598 mutex_unlock(&sdata->local->sta_mtx);
2599 /* ignore frame -- wait for timeout */
66e67e41
JB		 2600}
2601
dfa1ad29
CO		 2602#define case_WLAN(type) \
2603 case WLAN_REASON_##type: return #type
2604
2605static const char *ieee80211_get_reason_code_string(u16 reason_code)
2606{
2607 switch (reason_code) {
2608 case_WLAN(UNSPECIFIED);
2609 case_WLAN(PREV_AUTH_NOT_VALID);
2610 case_WLAN(DEAUTH_LEAVING);
2611 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2612 case_WLAN(DISASSOC_AP_BUSY);
2613 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2614 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2615 case_WLAN(DISASSOC_STA_HAS_LEFT);
2616 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2617 case_WLAN(DISASSOC_BAD_POWER);
2618 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2619 case_WLAN(INVALID_IE);
2620 case_WLAN(MIC_FAILURE);
2621 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2622 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2623 case_WLAN(IE_DIFFERENT);
2624 case_WLAN(INVALID_GROUP_CIPHER);
2625 case_WLAN(INVALID_PAIRWISE_CIPHER);
2626 case_WLAN(INVALID_AKMP);
2627 case_WLAN(UNSUPP_RSN_VERSION);
2628 case_WLAN(INVALID_RSN_IE_CAP);
2629 case_WLAN(IEEE8021X_FAILED);
2630 case_WLAN(CIPHER_SUITE_REJECTED);
2631 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2632 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2633 case_WLAN(DISASSOC_LOW_ACK);
2634 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2635 case_WLAN(QSTA_LEAVE_QBSS);
2636 case_WLAN(QSTA_NOT_USE);
2637 case_WLAN(QSTA_REQUIRE_SETUP);
2638 case_WLAN(QSTA_TIMEOUT);
2639 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2640 case_WLAN(MESH_PEER_CANCELED);
2641 case_WLAN(MESH_MAX_PEERS);
2642 case_WLAN(MESH_CONFIG);
2643 case_WLAN(MESH_CLOSE);
2644 case_WLAN(MESH_MAX_RETRIES);
2645 case_WLAN(MESH_CONFIRM_TIMEOUT);
2646 case_WLAN(MESH_INVALID_GTK);
2647 case_WLAN(MESH_INCONSISTENT_PARAM);
2648 case_WLAN(MESH_INVALID_SECURITY);
2649 case_WLAN(MESH_PATH_ERROR);
2650 case_WLAN(MESH_PATH_NOFORWARD);
2651 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2652 case_WLAN(MAC_EXISTS_IN_MBSS);
2653 case_WLAN(MESH_CHAN_REGULATORY);
2654 case_WLAN(MESH_CHAN);
2655 default: return "<unknown>";
2656 }
2657}
66e67e41 2658
8d61ffa5
JB		 2659static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2660 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2661{
46900298 2662 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2663 const u8 *bssid = NULL;
f0706e82
JB		 2664 u16 reason_code;
2665
8d61ffa5 2666 sdata_assert_lock(sdata);
66e67e41 2667
f4ea83dd 2668 if (len < 24 + 2)
8d61ffa5 2669 return;
f0706e82 2670
66e67e41 2671 if (!ifmgd->associated ||
b203ca39 2672 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2673 return;
77fdaa12 2674
0c1ad2ca 2675 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2676
2677 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2678
dfa1ad29
CO		 2679 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2680 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2681
37ad3888
JB		 2682 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2683
6ff57cf8 2684 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2685}
2686
2687
8d61ffa5
JB		 2688static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2689 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2690{
46900298 2691 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2692 u16 reason_code;
2693
8d61ffa5 2694 sdata_assert_lock(sdata);
77fdaa12 2695
66e67e41 2696 if (len < 24 + 2)
8d61ffa5 2697 return;
77fdaa12 2698
66e67e41 2699 if (!ifmgd->associated ||
b203ca39 2700 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2701 return;
f0706e82
JB		 2702
2703 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2704
bdcbd8e0
JB		 2705 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2706 mgmt->sa, reason_code);
f0706e82 2707
37ad3888
JB		 2708 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2709
6ff57cf8 2710 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2711}
2712
c74d084f
CL		 2713static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2714 u8 *supp_rates, unsigned int supp_rates_len,
2715 u32 *rates, u32 *basic_rates,
2716 bool *have_higher_than_11mbit,
2103dec1
SW		 2717 int *min_rate, int *min_rate_index,
2718 int shift, u32 rate_flags)
c74d084f
CL		 2719{
2720 int i, j;
2721
2722 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2723 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2724 bool is_basic = !!(supp_rates[i] & 0x80);
2725
2103dec1 2726 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2727 *have_higher_than_11mbit = true;
2728
2729 /*
2730 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2731 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2732 *
2733 * Note: Even through the membership selector and the basic
2734 * rate flag share the same bit, they are not exactly
2735 * the same.
2736 */
2737 if (!!(supp_rates[i] & 0x80) &&
2738 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2739 continue;
2740
2741 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2742 struct ieee80211_rate *br;
2743 int brate;
2744
2745 br = &sband->bitrates[j];
2746 if ((rate_flags & br->flags) != rate_flags)
2747 continue;
2748
2749 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2750 if (brate == rate) {
c74d084f
CL		 2751 *rates |= BIT(j);
2752 if (is_basic)
2753 *basic_rates |= BIT(j);
2103dec1
SW		 2754 if ((rate * 5) < *min_rate) {
2755 *min_rate = rate * 5;
c74d084f
CL		 2756 *min_rate_index = j;
2757 }
2758 break;
2759 }
2760 }
2761 }
2762}
f0706e82 2763
66e67e41
JB		 2764static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2765 bool assoc)
2766{
2767 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2768
8d61ffa5 2769 sdata_assert_lock(sdata);
66e67e41 2770
66e67e41 2771 if (!assoc) {
c1e140bf
EG		 2772 /*
2773 * we are not associated yet, the only timer that could be
2774 * running is the timeout for the association response which
2775 * which is not relevant anymore.
2776 */
2777 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2778 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2779
2780 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2781 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2782 sdata->u.mgd.flags = 0;
34a3740d 2783 mutex_lock(&sdata->local->mtx);
55de908a 2784 ieee80211_vif_release_channel(sdata);
34a3740d 2785 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2786 }
2787
2788 kfree(assoc_data);
2789 sdata->u.mgd.assoc_data = NULL;
2790}
2791
2792static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2793 struct cfg80211_bss *cbss,
af6b6374 2794 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2795{
46900298 2796 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2797 struct ieee80211_local *local = sdata->local;
8318d78a 2798 struct ieee80211_supported_band *sband;
f0706e82 2799 struct sta_info *sta;
af6b6374 2800 u8 *pos;
af6b6374 2801 u16 capab_info, aid;
f0706e82 2802 struct ieee802_11_elems elems;
bda3933a 2803 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2804 const struct cfg80211_bss_ies *bss_ies = NULL;
2805 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2806 u32 changed = 0;
c74d084f 2807 int err;
35d865af 2808 bool ret;
f0706e82 2809
af6b6374 2810 /* AssocResp and ReassocResp have identical structure */
f0706e82 2811
f0706e82 2812 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2813 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2814
1dd84aa2 2815 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2816 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2817 aid);
1dd84aa2
JB		 2818 aid &= ~(BIT(15) | BIT(14));
2819
05cb9108
JB		 2820 ifmgd->broken_ap = false;
2821
2822 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2823 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2824 aid);
05cb9108
JB		 2825 aid = 0;
2826 ifmgd->broken_ap = true;
2827 }
2828
af6b6374 2829 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2830 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2831
f0706e82 2832 if (!elems.supp_rates) {
bdcbd8e0 2833 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2834 return false;
f0706e82
JB		 2835 }
2836
46900298 2837 ifmgd->aid = aid;
9041c1fa
AN		 2838 ifmgd->tdls_chan_switch_prohibited =
2839 elems.ext_capab && elems.ext_capab_len >= 5 &&
2840 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 2841
35d865af
JB		 2842 /*
2843 * Some APs are erroneously not including some information in their
2844 * (re)association response frames. Try to recover by using the data
2845 * from the beacon or probe response. This seems to afflict mobile
2846 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2847 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2848 */
2849 if ((assoc_data->wmm && !elems.wmm_param) ||
2850 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2851 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2852 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2853 (!elems.vht_cap_elem || !elems.vht_operation))) {
2854 const struct cfg80211_bss_ies *ies;
2855 struct ieee802_11_elems bss_elems;
2856
2857 rcu_read_lock();
2858 ies = rcu_dereference(cbss->ies);
2859 if (ies)
2860 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2861 GFP_ATOMIC);
2862 rcu_read_unlock();
2863 if (!bss_ies)
2864 return false;
2865
2866 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2867 false, &bss_elems);
2868 if (assoc_data->wmm &&
2869 !elems.wmm_param && bss_elems.wmm_param) {
2870 elems.wmm_param = bss_elems.wmm_param;
2871 sdata_info(sdata,
2872 "AP bug: WMM param missing from AssocResp\n");
2873 }
2874
2875 /*
2876 * Also check if we requested HT/VHT, otherwise the AP doesn't
2877 * have to include the IEs in the (re)association response.
2878 */
2879 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2880 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2881 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2882 sdata_info(sdata,
2883 "AP bug: HT capability missing from AssocResp\n");
2884 }
2885 if (!elems.ht_operation && bss_elems.ht_operation &&
2886 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2887 elems.ht_operation = bss_elems.ht_operation;
2888 sdata_info(sdata,
2889 "AP bug: HT operation missing from AssocResp\n");
2890 }
2891 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2892 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2893 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2894 sdata_info(sdata,
2895 "AP bug: VHT capa missing from AssocResp\n");
2896 }
2897 if (!elems.vht_operation && bss_elems.vht_operation &&
2898 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2899 elems.vht_operation = bss_elems.vht_operation;
2900 sdata_info(sdata,
2901 "AP bug: VHT operation missing from AssocResp\n");
2902 }
2903 }
2904
30eb1dc2
JB		 2905 /*
2906 * We previously checked these in the beacon/probe response, so
2907 * they should be present here. This is just a safety net.
2908 */
2909 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2910 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2911 sdata_info(sdata,
35d865af
JB		 2912 "HT AP is missing WMM params or HT capability/operation\n");
2913 ret = false;
2914 goto out;
30eb1dc2
JB		 2915 }
2916
2917 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2918 (!elems.vht_cap_elem || !elems.vht_operation)) {
2919 sdata_info(sdata,
35d865af
JB		 2920 "VHT AP is missing VHT capability/operation\n");
2921 ret = false;
2922 goto out;
30eb1dc2
JB		 2923 }
2924
2a33bee2
GE		 2925 mutex_lock(&sdata->local->sta_mtx);
2926 /*
2927 * station info was already allocated and inserted before
2928 * the association and should be available to us
2929 */
7852e361 2930 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2931 if (WARN_ON(!sta)) {
2932 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2933 ret = false;
2934 goto out;
77fdaa12 2935 }
05e5e883 2936
55de908a 2937 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2938
30eb1dc2 2939 /* Set up internal HT/VHT capabilities */
a8243b72 2940 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2941 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2942 elems.ht_cap_elem, sta);
64f68e5d 2943
818255ea
MP		 2944 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2945 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2946 elems.vht_cap_elem, sta);
818255ea 2947
30eb1dc2
JB		 2948 /*
2949 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2950 * in their association response, so ignore that data for our own
2951 * configuration. If it changed since the last beacon, we'll get the
2952 * next beacon and update then.
2953 */
1128958d 2954
bee7f586
JB		 2955 /*
2956 * If an operating mode notification IE is present, override the
2957 * NSS calculation (that would be done in rate_control_rate_init())
2958 * and use the # of streams from that element.
2959 */
2960 if (elems.opmode_notif &&
2961 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2962 u8 nss;
2963
2964 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2965 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2966 nss += 1;
2967 sta->sta.rx_nss = nss;
2968 }
2969
4b7679a5 2970 rate_control_rate_init(sta);
f0706e82 2971
46900298 2972 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2973 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2974
a74a8c84 2975 sta->sta.wme = elems.wmm_param;
ddf4ac53 2976
3e4d40fa 2977 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2978 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2979 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2980 if (err) {
bdcbd8e0
JB		 2981 sdata_info(sdata,
2982 "failed to move station %pM to desired state\n",
2983 sta->sta.addr);
c8987876
JB		 2984 WARN_ON(__sta_info_destroy(sta));
2985 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2986 ret = false;
2987 goto out;
c8987876
JB		 2988 }
2989
7852e361 2990 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2991
f2176d72
JO		 2992 /*
2993 * Always handle WMM once after association regardless
2994 * of the first value the AP uses. Setting -1 here has
2995 * that effect because the AP values is an unsigned
2996 * 4-bit value.
2997 */
2998 ifmgd->wmm_last_param_set = -1;
2999
095d81ce 3000 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 3001 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 3002 elems.wmm_param_len);
aa837e1d 3003 else
3abead59
JB		 3004 ieee80211_set_wmm_default(sdata, false);
3005 changed |= BSS_CHANGED_QOS;
f0706e82 3006
60f8b39c
JB		 3007 /* set AID and assoc capability,
3008 * ieee80211_set_associated() will tell the driver */
3009 bss_conf->aid = aid;
3010 bss_conf->assoc_capability = capab_info;
0c1ad2ca 3011 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 3012
d524215f
FF		 3013 /*
3014 * If we're using 4-addr mode, let the AP know that we're
3015 * doing so, so that it can create the STA VLAN on its side
3016 */
3017 if (ifmgd->use_4addr)
3018 ieee80211_send_4addr_nullfunc(local, sdata);
3019
15b7b062 3020 /*
b291ba11
JB		 3021 * Start timer to probe the connection to the AP now.
3022 * Also start the timer that will detect beacon loss.
15b7b062 3023 */
b291ba11 3024 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 3025 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 3026
35d865af
JB		 3027 ret = true;
3028 out:
3029 kfree(bss_ies);
3030 return ret;
f0706e82
JB		 3031}
3032
8d61ffa5
JB		 3033static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3034 struct ieee80211_mgmt *mgmt,
3035 size_t len)
66e67e41
JB		 3036{
3037 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3038 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3039 u16 capab_info, status_code, aid;
3040 struct ieee802_11_elems elems;
b0b6aa2c 3041 int ac, uapsd_queues = -1;
66e67e41
JB		 3042 u8 *pos;
3043 bool reassoc;
8d61ffa5 3044 struct cfg80211_bss *bss;
66e67e41 3045
8d61ffa5 3046 sdata_assert_lock(sdata);
66e67e41
JB		 3047
3048 if (!assoc_data)
8d61ffa5 3049 return;
b203ca39 3050 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3051 return;
66e67e41
JB		 3052
3053 /*
3054 * AssocResp and ReassocResp have identical structure, so process both
3055 * of them in this function.
3056 */
3057
3058 if (len < 24 + 6)
8d61ffa5 3059 return;
66e67e41
JB		 3060
3061 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
3062 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3063 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3064 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3065
bdcbd8e0
JB		 3066 sdata_info(sdata,
3067 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3068 reassoc ? "Rea" : "A", mgmt->sa,
3069 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 3070
3071 pos = mgmt->u.assoc_resp.variable;
b2e506bf 3072 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 3073
3074 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3075 elems.timeout_int &&
3076 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3077 u32 tu, ms;
79ba1d89 3078 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3079 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3080 sdata_info(sdata,
3081 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3082 mgmt->sa, tu, ms);
66e67e41 3083 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3084 assoc_data->timeout_started = true;
66e67e41 3085 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3086 run_again(sdata, assoc_data->timeout);
3087 return;
66e67e41
JB		 3088 }
3089
8d61ffa5 3090 bss = assoc_data->bss;
66e67e41
JB		 3091
3092 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3093 sdata_info(sdata, "%pM denied association (code=%d)\n",
3094 mgmt->sa, status_code);
66e67e41
JB		 3095 ieee80211_destroy_assoc_data(sdata, false);
3096 } else {
8d61ffa5 3097 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 3098 /* oops -- internal error -- send timeout for now */
10a9109f 3099 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3100 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3101 return;
66e67e41 3102 }
635d999f 3103 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3104
3105 /*
3106 * destroy assoc_data afterwards, as otherwise an idle
3107 * recalc after assoc_data is NULL but before associated
3108 * is set can cause the interface to go idle
3109 */
3110 ieee80211_destroy_assoc_data(sdata, true);
b0b6aa2c
EP		 3111
3112 /* get uapsd queues configuration */
3113 uapsd_queues = 0;
3114 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3115 if (sdata->tx_conf[ac].uapsd)
3116 uapsd_queues |= BIT(ac);
66e67e41
JB		 3117 }
3118
b0b6aa2c 3119 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues);
66e67e41 3120}
8e3c1b77 3121
98c8fccf 3122static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3123 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 3124 struct ieee80211_rx_status *rx_status,
d45c4172 3125 struct ieee802_11_elems *elems)
98c8fccf
JB		 3126{
3127 struct ieee80211_local *local = sdata->local;
c2b13452 3128 struct ieee80211_bss *bss;
98c8fccf 3129 struct ieee80211_channel *channel;
56007a02 3130
8d61ffa5 3131 sdata_assert_lock(sdata);
b4f286a1 3132
3afc2167
EG		 3133 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3134 if (!channel)
98c8fccf
JB		 3135 return;
3136
98c8fccf 3137 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 3138 channel);
817cee76 3139 if (bss) {
817cee76 3140 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3141 ieee80211_rx_bss_put(local, bss);
817cee76 3142 }
f0706e82
JB		 3143}
3144
3145
f698d856 3146static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3147 struct sk_buff *skb)
f0706e82 3148{
af6b6374 3149 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3150 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 3151 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3152 size_t baselen, len = skb->len;
ae6a44e3
EK		 3153 struct ieee802_11_elems elems;
3154
15b7b062
KV		 3155 ifmgd = &sdata->u.mgd;
3156
8d61ffa5 3157 sdata_assert_lock(sdata);
77fdaa12 3158
b203ca39 3159 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 3160 return; /* ignore ProbeResp to foreign address */
3161
ae6a44e3
EK		 3162 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3163 if (baselen > len)
3164 return;
3165
3166 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 3167 false, &elems);
ae6a44e3 3168
d45c4172 3169 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 3170
77fdaa12 3171 if (ifmgd->associated &&
b203ca39 3172 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3173 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 3174
3175 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 3176 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 3177 /* got probe response, continue with auth */
bdcbd8e0 3178 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 3179 ifmgd->auth_data->tries = 0;
3180 ifmgd->auth_data->timeout = jiffies;
89afe614 3181 ifmgd->auth_data->timeout_started = true;
8d61ffa5 3182 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3183 }
f0706e82
JB		 3184}
3185
d91f36db
JB		 3186/*
3187 * This is the canonical list of information elements we care about,
3188 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3189 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3190 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3191 * changes to requested client power.
d91f36db
JB		 3192 *
3193 * We implement beacon filtering in software since that means we can
3194 * avoid processing the frame here and in cfg80211, and userspace
3195 * will not be able to tell whether the hardware supports it or not.
3196 *
3197 * XXX: This list needs to be dynamic -- userspace needs to be able to
3198 * add items it requires. It also needs to be able to tell us to
3199 * look out for other vendor IEs.
3200 */
3201static const u64 care_about_ies =
1d4df3a5
JB		 3202 (1ULL << WLAN_EID_COUNTRY) |
3203 (1ULL << WLAN_EID_ERP_INFO) |
3204 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3205 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3206 (1ULL << WLAN_EID_HT_CAPABILITY) |
70a3fd6c
JB		 3207 (1ULL << WLAN_EID_HT_OPERATION) |
3208 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
d91f36db 3209
8d61ffa5
JB		 3210static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3211 struct ieee80211_mgmt *mgmt, size_t len,
3212 struct ieee80211_rx_status *rx_status)
f0706e82 3213{
d91f36db 3214 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 3215 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 3216 size_t baselen;
3217 struct ieee802_11_elems elems;
f698d856 3218 struct ieee80211_local *local = sdata->local;
55de908a
JB		 3219 struct ieee80211_chanctx_conf *chanctx_conf;
3220 struct ieee80211_channel *chan;
bee7f586 3221 struct sta_info *sta;
471b3efd 3222 u32 changed = 0;
f87ad637 3223 bool erp_valid;
7a5158ef 3224 u8 erp_value = 0;
d91f36db 3225 u32 ncrc;
77fdaa12 3226 u8 *bssid;
8d61ffa5 3227 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 3228
8d61ffa5 3229 sdata_assert_lock(sdata);
f0706e82 3230
ae6a44e3
EK		 3231 /* Process beacon from the current BSS */
3232 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3233 if (baselen > len)
8d61ffa5 3234 return;
ae6a44e3 3235
55de908a
JB		 3236 rcu_read_lock();
3237 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3238 if (!chanctx_conf) {
3239 rcu_read_unlock();
8d61ffa5 3240 return;
55de908a
JB		 3241 }
3242
4bf88530 3243 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 3244 rcu_read_unlock();
8d61ffa5 3245 return;
55de908a 3246 }
4bf88530 3247 chan = chanctx_conf->def.chan;
55de908a 3248 rcu_read_unlock();
f0706e82 3249
c65dd147 3250 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 3251 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 3252 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 3253 len - baselen, false, &elems);
77fdaa12 3254
d45c4172 3255 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 3256 if (elems.tim && !elems.parse_error) {
3257 const struct ieee80211_tim_ie *tim_ie = elems.tim;
3258 ifmgd->dtim_period = tim_ie->dtim_period;
3259 }
989c6505 3260 ifmgd->have_beacon = true;
c65dd147 3261 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 3262 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3263 sdata->vif.bss_conf.sync_tsf =
3264 le64_to_cpu(mgmt->u.beacon.timestamp);
3265 sdata->vif.bss_conf.sync_device_ts =
3266 rx_status->device_timestamp;
3267 if (elems.tim)
3268 sdata->vif.bss_conf.sync_dtim_count =
3269 elems.tim->dtim_count;
3270 else
3271 sdata->vif.bss_conf.sync_dtim_count = 0;
3272 }
66e67e41
JB		 3273 /* continue assoc process */
3274 ifmgd->assoc_data->timeout = jiffies;
89afe614 3275 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 3276 run_again(sdata, ifmgd->assoc_data->timeout);
3277 return;
66e67e41 3278 }
77fdaa12 3279
66e67e41 3280 if (!ifmgd->associated ||
b203ca39 3281 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3282 return;
66e67e41 3283 bssid = ifmgd->associated->bssid;
f0706e82 3284
17e4ec14
JM		 3285 /* Track average RSSI from the Beacon frames of the current AP */
3286 ifmgd->last_beacon_signal = rx_status->signal;
3287 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3288 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 3289 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 3290 ifmgd->last_cqm_event_signal = 0;
391a200a 3291 ifmgd->count_beacon_signal = 1;
615f7b9b 3292 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 3293 } else {
3294 ifmgd->ave_beacon_signal =
3295 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
3296 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
3297 ifmgd->ave_beacon_signal) / 16;
391a200a 3298 ifmgd->count_beacon_signal++;
17e4ec14 3299 }
615f7b9b
MV		 3300
3301 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3302 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
3303 int sig = ifmgd->ave_beacon_signal;
3304 int last_sig = ifmgd->last_ave_beacon_signal;
3305
3306 /*
3307 * if signal crosses either of the boundaries, invoke callback
3308 * with appropriate parameters
3309 */
3310 if (sig > ifmgd->rssi_max_thold &&
3311 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3312 ifmgd->last_ave_beacon_signal = sig;
887da917 3313 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 3314 } else if (sig < ifmgd->rssi_min_thold &&
3315 (last_sig >= ifmgd->rssi_max_thold ||
3316 last_sig == 0)) {
3317 ifmgd->last_ave_beacon_signal = sig;
887da917 3318 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 3319 }
3320 }
3321
17e4ec14 3322 if (bss_conf->cqm_rssi_thold &&
391a200a 3323 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3324 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 3325 int sig = ifmgd->ave_beacon_signal / 16;
3326 int last_event = ifmgd->last_cqm_event_signal;
3327 int thold = bss_conf->cqm_rssi_thold;
3328 int hyst = bss_conf->cqm_rssi_hyst;
3329 if (sig < thold &&
3330 (last_event == 0 || sig < last_event - hyst)) {
3331 ifmgd->last_cqm_event_signal = sig;
3332 ieee80211_cqm_rssi_notify(
3333 &sdata->vif,
3334 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3335 GFP_KERNEL);
3336 } else if (sig > thold &&
3337 (last_event == 0 || sig > last_event + hyst)) {
3338 ifmgd->last_cqm_event_signal = sig;
3339 ieee80211_cqm_rssi_notify(
3340 &sdata->vif,
3341 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3342 GFP_KERNEL);
3343 }
3344 }
3345
392b9ffb 3346 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3347 mlme_dbg_ratelimited(sdata,
112c31f0 3348 "cancelling AP probe due to a received beacon\n");
392b9ffb 3349 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3350 }
3351
b291ba11
JB		 3352 /*
3353 * Push the beacon loss detection into the future since
3354 * we are processing a beacon from the AP just now.
3355 */
d3a910a8 3356 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3357
d91f36db
JB		 3358 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3359 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3360 len - baselen, false, &elems,
d91f36db
JB		 3361 care_about_ies, ncrc);
3362
25c9c875 3363 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3364 bool directed_tim = ieee80211_check_tim(elems.tim,
3365 elems.tim_len,
3366 ifmgd->aid);
1fb3606b 3367 if (directed_tim) {
572e0012 3368 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3369 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3370 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3371 ieee80211_hw_config(local,
3372 IEEE80211_CONF_CHANGE_PS);
3373 }
572e0012 3374 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3375 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3376 local->pspolling = true;
3377
3378 /*
3379 * Here is assumed that the driver will be
3380 * able to send ps-poll frame and receive a
3381 * response even though power save mode is
3382 * enabled, but some drivers might require
3383 * to disable power save here. This needs
3384 * to be investigated.
3385 */
3386 ieee80211_send_pspoll(local, sdata);
3387 }
a97b77b9
VN		 3388 }
3389 }
7a5158ef 3390
488dd7b5 3391 if (sdata->vif.p2p) {
67baf663 3392 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3393 int ret;
3394
3395 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3396 len - baselen,
3397 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3398 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3399 if (ret >= 2) {
3400 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3401 /* valid noa_attr and index changed */
3402 sdata->u.mgd.p2p_noa_index = noa.index;
3403 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3404 changed |= BSS_CHANGED_P2P_PS;
3405 /*
3406 * make sure we update all information, the CRC
3407 * mechanism doesn't look at P2P attributes.
3408 */
3409 ifmgd->beacon_crc_valid = false;
3410 }
3411 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3412 /* noa_attr not found and we had valid noa_attr before */
3413 sdata->u.mgd.p2p_noa_index = -1;
3414 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3415 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3416 ifmgd->beacon_crc_valid = false;
3417 }
3418 }
3419
0c21e632
LC		 3420 if (ifmgd->csa_waiting_bcn)
3421 ieee80211_chswitch_post_beacon(sdata);
3422
d8ec4433 3423 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3424 return;
30196673 3425 ifmgd->beacon_crc = ncrc;
d8ec4433 3426 ifmgd->beacon_crc_valid = true;
30196673 3427
d45c4172 3428 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3429
d70b7616 3430 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 3431 rx_status->device_timestamp,
d70b7616
JB		 3432 &elems, true);
3433
095d81ce
JB		 3434 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3435 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3436 elems.wmm_param_len))
3437 changed |= BSS_CHANGED_QOS;
3438
c65dd147
EG		 3439 /*
3440 * If we haven't had a beacon before, tell the driver about the
ef429dad 3441 * DTIM period (and beacon timing if desired) now.
c65dd147 3442 */
989c6505 3443 if (!ifmgd->have_beacon) {
c65dd147
EG		 3444 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3445 if (elems.tim)
3446 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3447 else
3448 bss_conf->dtim_period = 1;
ef429dad
JB		 3449
3450 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3451 sdata->vif.bss_conf.sync_tsf =
3452 le64_to_cpu(mgmt->u.beacon.timestamp);
3453 sdata->vif.bss_conf.sync_device_ts =
3454 rx_status->device_timestamp;
3455 if (elems.tim)
3456 sdata->vif.bss_conf.sync_dtim_count =
3457 elems.tim->dtim_count;
3458 else
3459 sdata->vif.bss_conf.sync_dtim_count = 0;
3460 }
3461
989c6505
AB		 3462 changed |= BSS_CHANGED_BEACON_INFO;
3463 ifmgd->have_beacon = true;
482a9c74
AB		 3464
3465 mutex_lock(&local->iflist_mtx);
3466 ieee80211_recalc_ps(local, -1);
3467 mutex_unlock(&local->iflist_mtx);
3468
ce857888 3469 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3470 }
3471
1946bed9 3472 if (elems.erp_info) {
7a5158ef
JB		 3473 erp_valid = true;
3474 erp_value = elems.erp_info[0];
3475 } else {
3476 erp_valid = false;
50c4afb9 3477 }
7a5158ef
JB		 3478 changed |= ieee80211_handle_bss_capability(sdata,
3479 le16_to_cpu(mgmt->u.beacon.capab_info),
3480 erp_valid, erp_value);
f0706e82 3481
1128958d 3482 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3483 sta = sta_info_get(sdata, bssid);
3484
53b954ee
EP		 3485 if (ieee80211_config_bw(sdata, sta,
3486 elems.ht_cap_elem, elems.ht_operation,
30eb1dc2
JB		 3487 elems.vht_operation, bssid, &changed)) {
3488 mutex_unlock(&local->sta_mtx);
3489 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3490 WLAN_REASON_DEAUTH_LEAVING,
3491 true, deauth_buf);
6ff57cf8
JB		 3492 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3493 sizeof(deauth_buf));
8d61ffa5 3494 return;
30eb1dc2 3495 }
bee7f586
JB		 3496
3497 if (sta && elems.opmode_notif)
3498 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3499 rx_status->band, true);
1128958d 3500 mutex_unlock(&local->sta_mtx);
d3c990fb 3501
24a4e400
SG		 3502 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
3503 elems.country_elem,
3504 elems.country_elem_len,
c8d65917
SG		 3505 elems.pwr_constr_elem,
3506 elems.cisco_dtpc_elem);
3f2355cb 3507
471b3efd 3508 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3509}
3510
1fa57d01
JB		 3511void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3512 struct sk_buff *skb)
f0706e82
JB		 3513{
3514 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3515 struct ieee80211_mgmt *mgmt;
3516 u16 fc;
1b3a2e49
JB		 3517 struct ieee802_11_elems elems;
3518 int ies_len;
f0706e82 3519
f0706e82
JB		 3520 rx_status = (struct ieee80211_rx_status *) skb->cb;
3521 mgmt = (struct ieee80211_mgmt *) skb->data;
3522 fc = le16_to_cpu(mgmt->frame_control);
3523
8d61ffa5 3524 sdata_lock(sdata);
77fdaa12 3525
66e67e41
JB		 3526 switch (fc & IEEE80211_FCTL_STYPE) {
3527 case IEEE80211_STYPE_BEACON:
8d61ffa5 3528 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3529 break;
3530 case IEEE80211_STYPE_PROBE_RESP:
3531 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3532 break;
3533 case IEEE80211_STYPE_AUTH:
8d61ffa5 3534 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3535 break;
3536 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3537 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3538 break;
3539 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3540 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3541 break;
3542 case IEEE80211_STYPE_ASSOC_RESP:
3543 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3544 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3545 break;
3546 case IEEE80211_STYPE_ACTION:
37799e52 3547 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3548 ies_len = skb->len -
3549 offsetof(struct ieee80211_mgmt,
3550 u.action.u.chan_switch.variable);
37799e52
JB		 3551
3552 if (ies_len < 0)
3553 break;
3554
3555 ieee802_11_parse_elems(
3556 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3557 ies_len, true, &elems);
37799e52
JB		 3558
3559 if (elems.parse_error)
3560 break;
3561
1b3a2e49 3562 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3563 rx_status->mactime,
3564 rx_status->device_timestamp,
3565 &elems, false);
1b3a2e49
JB		 3566 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3567 ies_len = skb->len -
3568 offsetof(struct ieee80211_mgmt,
3569 u.action.u.ext_chan_switch.variable);
3570
3571 if (ies_len < 0)
3572 break;
3573
3574 ieee802_11_parse_elems(
3575 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3576 ies_len, true, &elems);
1b3a2e49
JB		 3577
3578 if (elems.parse_error)
3579 break;
3580
3581 /* for the handling code pretend this was also an IE */
3582 elems.ext_chansw_ie =
3583 &mgmt->u.action.u.ext_chan_switch.data;
3584
66e67e41 3585 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3586 rx_status->mactime,
3587 rx_status->device_timestamp,
3588 &elems, false);
77fdaa12 3589 }
37799e52 3590 break;
77fdaa12 3591 }
8d61ffa5 3592 sdata_unlock(sdata);
f0706e82
JB		 3593}
3594
9c6bd790 3595static void ieee80211_sta_timer(unsigned long data)
f0706e82 3596{
60f8b39c
JB		 3597 struct ieee80211_sub_if_data *sdata =
3598 (struct ieee80211_sub_if_data *) data;
5bb644a0 3599
9b7d72c1 3600 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3601}
3602
04ac3c0e 3603static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3604 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3605{
6ae16775 3606 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3607
37ad3888 3608 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3609 tx, frame_buf);
37ad3888 3610
6ff57cf8
JB		 3611 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3612 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3613}
3614
66e67e41
JB		 3615static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3616{
3617 struct ieee80211_local *local = sdata->local;
3618 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3619 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3620 u32 tx_flags = 0;
66e67e41 3621
8d61ffa5 3622 sdata_assert_lock(sdata);
66e67e41
JB		 3623
3624 if (WARN_ON_ONCE(!auth_data))
3625 return -EINVAL;
3626
66e67e41
JB		 3627 auth_data->tries++;
3628
3629 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3630 sdata_info(sdata, "authentication with %pM timed out\n",
3631 auth_data->bss->bssid);
66e67e41
JB		 3632
3633 /*
3634 * Most likely AP is not in the range so remove the
3635 * bss struct for that AP.
3636 */
3637 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3638
3639 return -ETIMEDOUT;
3640 }
3641
a1845fc7
JB		 3642 drv_mgd_prepare_tx(local, sdata);
3643
66e67e41 3644 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3645 u16 trans = 1;
3646 u16 status = 0;
3647
bdcbd8e0
JB		 3648 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3649 auth_data->bss->bssid, auth_data->tries,
3650 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3651
3652 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3653
3654 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3655 trans = auth_data->sae_trans;
3656 status = auth_data->sae_status;
3657 auth_data->expected_transaction = trans;
3658 }
3659
6211dd12
SG		 3660 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3661 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3662 IEEE80211_TX_INTFL_MLME_CONN_TX;
3663
6b8ece3a
JM		 3664 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3665 auth_data->data, auth_data->data_len,
66e67e41 3666 auth_data->bss->bssid,
1672c0e3
JB		 3667 auth_data->bss->bssid, NULL, 0, 0,
3668 tx_flags);
66e67e41
JB		 3669 } else {
3670 const u8 *ssidie;
3671
bdcbd8e0
JB		 3672 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3673 auth_data->bss->bssid, auth_data->tries,
3674 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3675
9caf0364 3676 rcu_read_lock();
66e67e41 3677 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3678 if (!ssidie) {
3679 rcu_read_unlock();
66e67e41 3680 return -EINVAL;
9caf0364 3681 }
66e67e41
JB		 3682 /*
3683 * Direct probe is sent to broadcast address as some APs
3684 * will not answer to direct packet in unassociated state.
3685 */
a344d677
JB		 3686 ieee80211_send_probe_req(sdata, sdata->vif.addr, NULL,
3687 ssidie + 2, ssidie[1],
6211dd12 3688 NULL, 0, (u32) -1, true, 0,
55de908a 3689 auth_data->bss->channel, false);
9caf0364 3690 rcu_read_unlock();
66e67e41
JB		 3691 }
3692
6211dd12 3693 if (tx_flags == 0) {
1672c0e3 3694 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3695 auth_data->timeout_started = true;
8d61ffa5 3696 run_again(sdata, auth_data->timeout);
89afe614 3697 } else {
cb236d2d
JB		 3698 auth_data->timeout =
3699 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3700 auth_data->timeout_started = true;
3701 run_again(sdata, auth_data->timeout);
1672c0e3 3702 }
66e67e41
JB		 3703
3704 return 0;
3705}
3706
3707static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3708{
3709 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3710 struct ieee80211_local *local = sdata->local;
3711
8d61ffa5 3712 sdata_assert_lock(sdata);
66e67e41 3713
66e67e41
JB		 3714 assoc_data->tries++;
3715 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3716 sdata_info(sdata, "association with %pM timed out\n",
3717 assoc_data->bss->bssid);
66e67e41
JB		 3718
3719 /*
3720 * Most likely AP is not in the range so remove the
3721 * bss struct for that AP.
3722 */
3723 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3724
3725 return -ETIMEDOUT;
3726 }
3727
bdcbd8e0
JB		 3728 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3729 assoc_data->bss->bssid, assoc_data->tries,
3730 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3731 ieee80211_send_assoc(sdata);
3732
1672c0e3
JB		 3733 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3734 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3735 assoc_data->timeout_started = true;
8d61ffa5 3736 run_again(sdata, assoc_data->timeout);
89afe614 3737 } else {
cb236d2d
JB		 3738 assoc_data->timeout =
3739 round_jiffies_up(jiffies +
3740 IEEE80211_ASSOC_TIMEOUT_LONG);
3741 assoc_data->timeout_started = true;
3742 run_again(sdata, assoc_data->timeout);
1672c0e3 3743 }
66e67e41
JB		 3744
3745 return 0;
3746}
3747
1672c0e3
JB		 3748void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3749 __le16 fc, bool acked)
3750{
3751 struct ieee80211_local *local = sdata->local;
3752
3753 sdata->u.mgd.status_fc = fc;
3754 sdata->u.mgd.status_acked = acked;
3755 sdata->u.mgd.status_received = true;
3756
3757 ieee80211_queue_work(&local->hw, &sdata->work);
3758}
3759
1fa57d01 3760void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3761{
9c6bd790 3762 struct ieee80211_local *local = sdata->local;
1fa57d01 3763 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3764
8d61ffa5 3765 sdata_lock(sdata);
77fdaa12 3766
1672c0e3
JB		 3767 if (ifmgd->status_received) {
3768 __le16 fc = ifmgd->status_fc;
3769 bool status_acked = ifmgd->status_acked;
3770
3771 ifmgd->status_received = false;
3772 if (ifmgd->auth_data &&
3773 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3774 if (status_acked) {
3775 ifmgd->auth_data->timeout =
3776 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3777 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3778 } else {
3779 ifmgd->auth_data->timeout = jiffies - 1;
3780 }
89afe614 3781 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3782 } else if (ifmgd->assoc_data &&
3783 (ieee80211_is_assoc_req(fc) ||
3784 ieee80211_is_reassoc_req(fc))) {
3785 if (status_acked) {
3786 ifmgd->assoc_data->timeout =
3787 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3788 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3789 } else {
3790 ifmgd->assoc_data->timeout = jiffies - 1;
3791 }
89afe614 3792 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3793 }
3794 }
3795
89afe614 3796 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3797 time_after(jiffies, ifmgd->auth_data->timeout)) {
3798 if (ifmgd->auth_data->done) {
3799 /*
3800 * ok ... we waited for assoc but userspace didn't,
3801 * so let's just kill the auth data
3802 */
3803 ieee80211_destroy_auth_data(sdata, false);
3804 } else if (ieee80211_probe_auth(sdata)) {
3805 u8 bssid[ETH_ALEN];
3806
3807 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3808
3809 ieee80211_destroy_auth_data(sdata, false);
3810
6ff57cf8 3811 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3812 }
89afe614 3813 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3814 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3815
89afe614 3816 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3817 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3818 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3819 ieee80211_do_assoc(sdata)) {
959867fa 3820 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3821
3822 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3823 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3824 }
89afe614 3825 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3826 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3827
392b9ffb 3828 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3829 ifmgd->associated) {
a43abf29 3830 u8 bssid[ETH_ALEN];
72a8a3ed 3831 int max_tries;
a43abf29 3832
0c1ad2ca 3833 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3834
72a8a3ed 3835 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3836 max_tries = max_nullfunc_tries;
72a8a3ed 3837 else
180205bd 3838 max_tries = max_probe_tries;
72a8a3ed 3839
4e5ff376
FF		 3840 /* ACK received for nullfunc probing frame */
3841 if (!ifmgd->probe_send_count)
3842 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3843 else if (ifmgd->nullfunc_failed) {
3844 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3845 mlme_dbg(sdata,
3846 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3847 bssid, ifmgd->probe_send_count,
3848 max_tries);
04ac3c0e
FF		 3849 ieee80211_mgd_probe_ap_send(sdata);
3850 } else {
bdcbd8e0
JB		 3851 mlme_dbg(sdata,
3852 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3853 bssid);
95acac61 3854 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3855 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3856 false);
04ac3c0e
FF		 3857 }
3858 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3859 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3860 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3861 mlme_dbg(sdata,
3862 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3863 bssid, probe_wait_ms);
95acac61 3864 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3865 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3866 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3867 mlme_dbg(sdata,
3868 "No probe response from AP %pM after %dms, try %d/%i\n",
3869 bssid, probe_wait_ms,
3870 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3871 ieee80211_mgd_probe_ap_send(sdata);
3872 } else {
b291ba11
JB		 3873 /*
3874 * We actually lost the connection ... or did we?
3875 * Let's make sure!
3876 */
b38afa87
BG		 3877 wiphy_debug(local->hw.wiphy,
3878 "%s: No probe response from AP %pM"
3879 " after %dms, disconnecting.\n",
3880 sdata->name,
180205bd 3881 bssid, probe_wait_ms);
04ac3c0e 3882
95acac61 3883 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3884 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3885 }
3886 }
3887
8d61ffa5 3888 sdata_unlock(sdata);
f0706e82
JB		 3889}
3890
b291ba11
JB		 3891static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3892{
3893 struct ieee80211_sub_if_data *sdata =
3894 (struct ieee80211_sub_if_data *) data;
3895 struct ieee80211_local *local = sdata->local;
0c21e632 3896 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11
JB		 3897
3898 if (local->quiescing)
3899 return;
3900
0c21e632 3901 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3902 return;
3903
682bd38b 3904 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3905 ieee80211_queue_work(&sdata->local->hw,
3906 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3907}
3908
3909static void ieee80211_sta_conn_mon_timer(unsigned long data)
3910{
3911 struct ieee80211_sub_if_data *sdata =
3912 (struct ieee80211_sub_if_data *) data;
3913 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3914 struct ieee80211_local *local = sdata->local;
3915
3916 if (local->quiescing)
3917 return;
3918
0c21e632 3919 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3920 return;
3921
42935eca 3922 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3923}
3924
3925static void ieee80211_sta_monitor_work(struct work_struct *work)
3926{
3927 struct ieee80211_sub_if_data *sdata =
3928 container_of(work, struct ieee80211_sub_if_data,
3929 u.mgd.monitor_work);
3930
3931 ieee80211_mgd_probe_ap(sdata, false);
3932}
3933
9c6bd790
JB		 3934static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3935{
494f1fe5
EP		 3936 u32 flags;
3937
ad935687 3938 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3939 __ieee80211_stop_poll(sdata);
ad935687 3940
b291ba11 3941 /* let's probe the connection once */
494f1fe5
EP		 3942 flags = sdata->local->hw.flags;
3943 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3944 ieee80211_queue_work(&sdata->local->hw,
3945 &sdata->u.mgd.monitor_work);
b291ba11 3946 /* and do all the other regular work too */
64592c8f 3947 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3948 }
9c6bd790 3949}
f0706e82 3950
b8360ab8 3951#ifdef CONFIG_PM
1a1cb744
JB		 3952void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3953{
3954 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3955 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3956
3957 sdata_lock(sdata);
3958
c52666ae
EG		 3959 if (ifmgd->auth_data || ifmgd->assoc_data) {
3960 const u8 *bssid = ifmgd->auth_data ?
3961 ifmgd->auth_data->bss->bssid :
3962 ifmgd->assoc_data->bss->bssid;
3963
1a1cb744 3964 /*
c52666ae
EG		 3965 * If we are trying to authenticate / associate while suspending,
3966 * cfg80211 won't know and won't actually abort those attempts,
3967 * thus we need to do that ourselves.
1a1cb744 3968 */
c52666ae 3969 ieee80211_send_deauth_disassoc(sdata, bssid,
1a1cb744
JB		 3970 IEEE80211_STYPE_DEAUTH,
3971 WLAN_REASON_DEAUTH_LEAVING,
3972 false, frame_buf);
c52666ae
EG		 3973 if (ifmgd->assoc_data)
3974 ieee80211_destroy_assoc_data(sdata, false);
3975 if (ifmgd->auth_data)
3976 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 3977 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3978 IEEE80211_DEAUTH_FRAME_LEN);
3979 }
3980
3981 sdata_unlock(sdata);
3982}
3983
b8360ab8
JB		 3984void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3985{
3986 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3987
8d61ffa5 3988 sdata_lock(sdata);
b8360ab8 3989 if (!ifmgd->associated) {
8d61ffa5 3990 sdata_unlock(sdata);
b8360ab8
JB		 3991 return;
3992 }
3993
3994 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3995 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3996 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3997 ieee80211_sta_connection_lost(sdata,
3998 ifmgd->associated->bssid,
3999 WLAN_REASON_UNSPECIFIED,
4000 true);
8d61ffa5 4001 sdata_unlock(sdata);
b8360ab8
JB		 4002 return;
4003 }
8d61ffa5 4004 sdata_unlock(sdata);
b8360ab8
JB		 4005}
4006#endif
4007
9c6bd790
JB		 4008/* interface setup */
4009void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 4010{
46900298 4011 struct ieee80211_if_managed *ifmgd;
988c0f72 4012
46900298 4013 ifmgd = &sdata->u.mgd;
b291ba11 4014 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 4015 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 4016 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4017 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 4018 INIT_WORK(&ifmgd->csa_connection_drop_work,
4019 ieee80211_csa_connection_drop_work);
687da132 4020 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 4021 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4022 ieee80211_tdls_peer_del_work);
46900298 4023 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 4024 (unsigned long) sdata);
b291ba11
JB		 4025 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
4026 (unsigned long) sdata);
4027 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
4028 (unsigned long) sdata);
46900298 4029 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 4030 (unsigned long) sdata);
02219b3a
JB		 4031 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4032 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4033
ab1faead 4034 ifmgd->flags = 0;
1478acb3 4035 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4036 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4037 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4038 ifmgd->p2p_noa_index = -1;
bbbdff9e 4039
0d8614b4 4040 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4041 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4042 else
4043 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4044
4045 /* Setup TDLS data */
4046 spin_lock_init(&ifmgd->teardown_lock);
4047 ifmgd->teardown_skb = NULL;
4048 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4049}
4050
77fdaa12
JB		 4051/* scan finished notification */
4052void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4053{
31ee67a1 4054 struct ieee80211_sub_if_data *sdata;
60f8b39c 4055
77fdaa12
JB		 4056 /* Restart STA timers */
4057 rcu_read_lock();
370bd005
BG		 4058 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4059 if (ieee80211_sdata_running(sdata))
4060 ieee80211_restart_sta_timer(sdata);
4061 }
77fdaa12
JB		 4062 rcu_read_unlock();
4063}
60f8b39c 4064
77fdaa12
JB		 4065int ieee80211_max_network_latency(struct notifier_block *nb,
4066 unsigned long data, void *dummy)
4067{
4068 s32 latency_usec = (s32) data;
4069 struct ieee80211_local *local =
4070 container_of(nb, struct ieee80211_local,
4071 network_latency_notifier);
1fa6f4af 4072
77fdaa12
JB		 4073 mutex_lock(&local->iflist_mtx);
4074 ieee80211_recalc_ps(local, latency_usec);
4075 mutex_unlock(&local->iflist_mtx);
dfe67012 4076
8bd811aa 4077 return NOTIFY_OK;
9c6bd790
JB		 4078}
4079
f2d9d270
JB		 4080static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4081 struct cfg80211_bss *cbss)
4082{
4083 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4084 const u8 *ht_cap_ie, *vht_cap_ie;
4085 const struct ieee80211_ht_cap *ht_cap;
4086 const struct ieee80211_vht_cap *vht_cap;
4087 u8 chains = 1;
4088
4089 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4090 return chains;
4091
9caf0364 4092 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4093 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4094 ht_cap = (void *)(ht_cap_ie + 2);
4095 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4096 /*
4097 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4098 * "Tx Unequal Modulation Supported" fields.
4099 */
4100 }
4101
4102 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4103 return chains;
4104
9caf0364 4105 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4106 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4107 u8 nss;
4108 u16 tx_mcs_map;
4109
4110 vht_cap = (void *)(vht_cap_ie + 2);
4111 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4112 for (nss = 8; nss > 0; nss--) {
4113 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4114 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4115 break;
4116 }
4117 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4118 chains = max(chains, nss);
4119 }
4120
4121 return chains;
4122}
4123
b17166a7
JB		 4124static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4125 struct cfg80211_bss *cbss)
a1cf775d
JB		 4126{
4127 struct ieee80211_local *local = sdata->local;
4128 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4129 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4130 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4131 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 4132 struct ieee80211_supported_band *sband;
4bf88530 4133 struct cfg80211_chan_def chandef;
f2d9d270 4134 int ret;
a1cf775d 4135
24398e39
JB		 4136 sband = local->hw.wiphy->bands[cbss->channel->band];
4137
f2d9d270
JB		 4138 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4139 IEEE80211_STA_DISABLE_80P80MHZ |
4140 IEEE80211_STA_DISABLE_160MHZ);
4141
9caf0364
JB		 4142 rcu_read_lock();
4143
f2d9d270
JB		 4144 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4145 sband->ht_cap.ht_supported) {
53b954ee 4146 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4147
9caf0364 4148 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4149 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4150 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4151
53b954ee
EP		 4152 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4153 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4154 ht_cap = (void *)(ht_cap_ie + 2);
4155
4156 if (!ht_cap) {
08e6effa
JB		 4157 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4158 ht_oper = NULL;
4159 }
24398e39
JB		 4160 }
4161
f2d9d270
JB		 4162 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4163 sband->vht_cap.vht_supported) {
08e6effa 4164 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4165
9caf0364
JB		 4166 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4167 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4168 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4169 vht_oper = (void *)(vht_oper_ie + 2);
4170 if (vht_oper && !ht_oper) {
4171 vht_oper = NULL;
bdcbd8e0 4172 sdata_info(sdata,
f2d9d270 4173 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 4174 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4175 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 4176 }
08e6effa
JB		 4177
4178 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4179 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4180 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4181 vht_oper = NULL;
4182 }
24398e39
JB		 4183 }
4184
f2d9d270
JB		 4185 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4186 cbss->channel,
53b954ee 4187 ht_cap, ht_oper, vht_oper,
5cdaed1e 4188 &chandef, false);
04ecd257 4189
f2d9d270
JB		 4190 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4191 local->rx_chains);
24398e39 4192
9caf0364
JB		 4193 rcu_read_unlock();
4194
04ecd257
JB		 4195 /* will change later if needed */
4196 sdata->smps_mode = IEEE80211_SMPS_OFF;
4197
34a3740d 4198 mutex_lock(&local->mtx);
f2d9d270
JB		 4199 /*
4200 * If this fails (possibly due to channel context sharing
4201 * on incompatible channels, e.g. 80+80 and 160 sharing the
4202 * same control channel) try to use a smaller bandwidth.
4203 */
4204 ret = ieee80211_vif_use_channel(sdata, &chandef,
4205 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4206
4207 /* don't downgrade for 5 and 10 MHz channels, though. */
4208 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4209 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4210 goto out;
0418a445 4211
d601cd8d 4212 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4213 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4214 ret = ieee80211_vif_use_channel(sdata, &chandef,
4215 IEEE80211_CHANCTX_SHARED);
4216 }
34a3740d
JB		 4217 out:
4218 mutex_unlock(&local->mtx);
f2d9d270 4219 return ret;
b17166a7
JB		 4220}
4221
4222static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
4223 struct cfg80211_bss *cbss, bool assoc)
4224{
4225 struct ieee80211_local *local = sdata->local;
4226 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4227 struct ieee80211_bss *bss = (void *)cbss->priv;
4228 struct sta_info *new_sta = NULL;
179b8fc7
CRI		 4229 struct ieee80211_supported_band *sband;
4230 struct ieee80211_sta_ht_cap sta_ht_cap;
4231 bool have_sta = false, is_override = false;
b17166a7
JB		 4232 int err;
4233
179b8fc7
CRI		 4234 sband = local->hw.wiphy->bands[cbss->channel->band];
4235
b17166a7
JB		 4236 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4237 return -EINVAL;
4238
4239 if (assoc) {
4240 rcu_read_lock();
4241 have_sta = sta_info_get(sdata, cbss->bssid);
4242 rcu_read_unlock();
4243 }
4244
4245 if (!have_sta) {
4246 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4247 if (!new_sta)
4248 return -ENOMEM;
4249 }
179b8fc7
CRI		 4250
4251 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
4252 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
4253
4254 is_override = (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) !=
4255 (sband->ht_cap.cap &
4256 IEEE80211_HT_CAP_SUP_WIDTH_20_40);
4257
4258 if (new_sta || is_override) {
4259 err = ieee80211_prep_channel(sdata, cbss);
4260 if (err) {
4261 if (new_sta)
4262 sta_info_free(local, new_sta);
4263 return -EINVAL;
4264 }
4265 }
4266
13e0c8e3 4267 if (new_sta) {
5d6a1b06
JB		 4268 u32 rates = 0, basic_rates = 0;
4269 bool have_higher_than_11mbit;
4270 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 4271 struct ieee80211_chanctx_conf *chanctx_conf;
8cef2c9d 4272 const struct cfg80211_bss_ies *ies;
179b8fc7 4273 int shift = ieee80211_vif_get_shift(&sdata->vif);
2103dec1 4274 u32 rate_flags;
b17166a7 4275
2103dec1
SW		 4276 rcu_read_lock();
4277 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4278 if (WARN_ON(!chanctx_conf)) {
4279 rcu_read_unlock();
c368ddaa 4280 sta_info_free(local, new_sta);
2103dec1
SW		 4281 return -EINVAL;
4282 }
4283 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
4284 rcu_read_unlock();
5d6a1b06 4285
5d6a1b06
JB		 4286 ieee80211_get_rates(sband, bss->supp_rates,
4287 bss->supp_rates_len,
4288 &rates, &basic_rates,
4289 &have_higher_than_11mbit,
2103dec1
SW		 4290 &min_rate, &min_rate_index,
4291 shift, rate_flags);
5d6a1b06
JB		 4292
4293 /*
4294 * This used to be a workaround for basic rates missing
4295 * in the association response frame. Now that we no
4296 * longer use the basic rates from there, it probably
4297 * doesn't happen any more, but keep the workaround so
4298 * in case some *other* APs are buggy in different ways
4299 * we can connect -- with a warning.
4300 */
4301 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 4302 sdata_info(sdata,
4303 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 4304 basic_rates = BIT(min_rate_index);
4305 }
4306
13e0c8e3 4307 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 4308 sdata->vif.bss_conf.basic_rates = basic_rates;
4309
4310 /* cf. IEEE 802.11 9.2.12 */
55de908a 4311 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 4312 have_higher_than_11mbit)
4313 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4314 else
4315 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4316
4317 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4318
8c358bcd
JB		 4319 /* set timing information */
4320 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 4321 rcu_read_lock();
ef429dad
JB		 4322 ies = rcu_dereference(cbss->beacon_ies);
4323 if (ies) {
4324 const u8 *tim_ie;
4325
4326 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4327 sdata->vif.bss_conf.sync_device_ts =
4328 bss->device_ts_beacon;
4329 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4330 ies->data, ies->len);
4331 if (tim_ie && tim_ie[1] >= 2)
4332 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
4333 else
4334 sdata->vif.bss_conf.sync_dtim_count = 0;
4335 } else if (!(local->hw.flags &
4336 IEEE80211_HW_TIMING_BEACON_ONLY)) {
4337 ies = rcu_dereference(cbss->proberesp_ies);
4338 /* must be non-NULL since beacon IEs were NULL */
4339 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4340 sdata->vif.bss_conf.sync_device_ts =
4341 bss->device_ts_presp;
4342 sdata->vif.bss_conf.sync_dtim_count = 0;
4343 } else {
4344 sdata->vif.bss_conf.sync_tsf = 0;
4345 sdata->vif.bss_conf.sync_device_ts = 0;
4346 sdata->vif.bss_conf.sync_dtim_count = 0;
4347 }
8cef2c9d 4348 rcu_read_unlock();
8c358bcd
JB		 4349
4350 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 4351 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 4352 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4353 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 4354
4355 if (assoc)
13e0c8e3 4356 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 4357
13e0c8e3
JB		 4358 err = sta_info_insert(new_sta);
4359 new_sta = NULL;
a1cf775d 4360 if (err) {
bdcbd8e0
JB		 4361 sdata_info(sdata,
4362 "failed to insert STA entry for the AP (error %d)\n",
4363 err);
a1cf775d
JB		 4364 return err;
4365 }
4366 } else
b203ca39 4367 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 4368
4369 return 0;
4370}
4371
77fdaa12
JB		 4372/* config hooks */
4373int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4374 struct cfg80211_auth_request *req)
9c6bd790 4375{
66e67e41
JB		 4376 struct ieee80211_local *local = sdata->local;
4377 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4378 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4379 u16 auth_alg;
66e67e41
JB		 4380 int err;
4381
4382 /* prepare auth data structure */
9c6bd790 4383
77fdaa12
JB		 4384 switch (req->auth_type) {
4385 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4386 auth_alg = WLAN_AUTH_OPEN;
4387 break;
4388 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4389 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4390 return -EOPNOTSUPP;
77fdaa12
JB		 4391 auth_alg = WLAN_AUTH_SHARED_KEY;
4392 break;
4393 case NL80211_AUTHTYPE_FT:
4394 auth_alg = WLAN_AUTH_FT;
4395 break;
4396 case NL80211_AUTHTYPE_NETWORK_EAP:
4397 auth_alg = WLAN_AUTH_LEAP;
4398 break;
6b8ece3a
JM		 4399 case NL80211_AUTHTYPE_SAE:
4400 auth_alg = WLAN_AUTH_SAE;
4401 break;
77fdaa12
JB		 4402 default:
4403 return -EOPNOTSUPP;
60f8b39c 4404 }
77fdaa12 4405
6b8ece3a
JM		 4406 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4407 req->ie_len, GFP_KERNEL);
66e67e41 4408 if (!auth_data)
9c6bd790 4409 return -ENOMEM;
77fdaa12 4410
66e67e41 4411 auth_data->bss = req->bss;
77fdaa12 4412
6b8ece3a
JM		 4413 if (req->sae_data_len >= 4) {
4414 __le16 *pos = (__le16 *) req->sae_data;
4415 auth_data->sae_trans = le16_to_cpu(pos[0]);
4416 auth_data->sae_status = le16_to_cpu(pos[1]);
4417 memcpy(auth_data->data, req->sae_data + 4,
4418 req->sae_data_len - 4);
4419 auth_data->data_len += req->sae_data_len - 4;
4420 }
4421
77fdaa12 4422 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4423 memcpy(&auth_data->data[auth_data->data_len],
4424 req->ie, req->ie_len);
4425 auth_data->data_len += req->ie_len;
9c6bd790 4426 }
77fdaa12 4427
fffd0934 4428 if (req->key && req->key_len) {
66e67e41
JB		 4429 auth_data->key_len = req->key_len;
4430 auth_data->key_idx = req->key_idx;
4431 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4432 }
4433
66e67e41 4434 auth_data->algorithm = auth_alg;
60f8b39c 4435
66e67e41 4436 /* try to authenticate/probe */
2a33bee2 4437
66e67e41
JB		 4438 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4439 ifmgd->assoc_data) {
4440 err = -EBUSY;
4441 goto err_free;
2a33bee2
GE		 4442 }
4443
66e67e41
JB		 4444 if (ifmgd->auth_data)
4445 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4446
66e67e41
JB		 4447 /* prep auth_data so we don't go into idle on disassoc */
4448 ifmgd->auth_data = auth_data;
af6b6374 4449
7b119dc0
JB		 4450 if (ifmgd->associated) {
4451 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4452
4453 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4454 WLAN_REASON_UNSPECIFIED,
4455 false, frame_buf);
4456
6ff57cf8
JB		 4457 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4458 sizeof(frame_buf));
7b119dc0 4459 }
af6b6374 4460
bdcbd8e0 4461 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4462
a1cf775d
JB		 4463 err = ieee80211_prep_connection(sdata, req->bss, false);
4464 if (err)
66e67e41 4465 goto err_clear;
af6b6374 4466
66e67e41
JB		 4467 err = ieee80211_probe_auth(sdata);
4468 if (err) {
66e67e41
JB		 4469 sta_info_destroy_addr(sdata, req->bss->bssid);
4470 goto err_clear;
4471 }
4472
4473 /* hold our own reference */
5b112d3d 4474 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4475 return 0;
66e67e41
JB		 4476
4477 err_clear:
3d2abdfd
EP		 4478 memset(ifmgd->bssid, 0, ETH_ALEN);
4479 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4480 ifmgd->auth_data = NULL;
4481 err_free:
4482 kfree(auth_data);
66e67e41 4483 return err;
af6b6374
JB		 4484}
4485
095d81ce
JB		 4486static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4487 const u8 *wmm_param, int len)
4488{
4489 const u8 *pos;
4490 size_t left;
4491
4492 if (len < 8)
4493 return false;
4494
4495 if (wmm_param[5] != 1 /* version */)
4496 return false;
4497
4498 pos = wmm_param + 8;
4499 left = len - 8;
4500
4501 for (; left >= 4; left -= 4, pos += 4) {
4502 u8 aifsn = pos[0] & 0x0f;
4503 u8 ecwmin = pos[1] & 0x0f;
4504 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4505 int aci = (pos[0] >> 5) & 0x03;
4506
4507 if (aifsn < 2) {
4508 sdata_info(sdata,
4509 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4510 aifsn, aci);
4511 return false;
4512 }
4513 if (ecwmin > ecwmax) {
4514 sdata_info(sdata,
4515 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4516 ecwmin, ecwmax, aci);
4517 return false;
4518 }
4519 }
4520
4521 return true;
4522}
4523
77fdaa12
JB		 4524int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4525 struct cfg80211_assoc_request *req)
f0706e82 4526{
66e67e41 4527 struct ieee80211_local *local = sdata->local;
77fdaa12 4528 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4529 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4530 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4531 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4532 struct ieee80211_supported_band *sband;
b08fbbd8 4533 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4534 int i, err;
f0706e82 4535
66e67e41
JB		 4536 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4537 if (!assoc_data)
4538 return -ENOMEM;
4539
9caf0364
JB		 4540 rcu_read_lock();
4541 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4542 if (!ssidie) {
4543 rcu_read_unlock();
4544 kfree(assoc_data);
4545 return -EINVAL;
4546 }
4547 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4548 assoc_data->ssid_len = ssidie[1];
4549 rcu_read_unlock();
4550
7b119dc0
JB		 4551 if (ifmgd->associated) {
4552 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4553
4554 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4555 WLAN_REASON_UNSPECIFIED,
4556 false, frame_buf);
4557
6ff57cf8
JB		 4558 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4559 sizeof(frame_buf));
7b119dc0 4560 }
66e67e41
JB		 4561
4562 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4563 err = -EBUSY;
4564 goto err_free;
af6b6374 4565 }
77fdaa12 4566
66e67e41
JB		 4567 if (ifmgd->assoc_data) {
4568 err = -EBUSY;
4569 goto err_free;
4570 }
77fdaa12 4571
66e67e41
JB		 4572 if (ifmgd->auth_data) {
4573 bool match;
4574
4575 /* keep sta info, bssid if matching */
b203ca39 4576 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4577 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4578 }
4579
66e67e41 4580 /* prepare assoc data */
095d81ce 4581
d8ec4433
JO		 4582 ifmgd->beacon_crc_valid = false;
4583
095d81ce
JB		 4584 assoc_data->wmm = bss->wmm_used &&
4585 (local->hw.queues >= IEEE80211_NUM_ACS);
4586 if (assoc_data->wmm) {
4587 /* try to check validity of WMM params IE */
4588 const struct cfg80211_bss_ies *ies;
4589 const u8 *wp, *start, *end;
4590
4591 rcu_read_lock();
4592 ies = rcu_dereference(req->bss->ies);
4593 start = ies->data;
4594 end = start + ies->len;
4595
4596 while (true) {
4597 wp = cfg80211_find_vendor_ie(
4598 WLAN_OUI_MICROSOFT,
4599 WLAN_OUI_TYPE_MICROSOFT_WMM,
4600 start, end - start);
4601 if (!wp)
4602 break;
4603 start = wp + wp[1] + 2;
4604 /* if this IE is too short, try the next */
4605 if (wp[1] <= 4)
4606 continue;
4607 /* if this IE is WMM params, we found what we wanted */
4608 if (wp[6] == 1)
4609 break;
4610 }
4611
4612 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4613 wp[1] - 2)) {
4614 assoc_data->wmm = false;
4615 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4616 }
4617 rcu_read_unlock();
4618 }
4619
de5036aa
JB		 4620 /*
4621 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4622 * We still associate in non-HT mode (11a/b/g) if any one of these
4623 * ciphers is configured as pairwise.
4624 * We can set this to true for non-11n hardware, that'll be checked
4625 * separately along with the peer capabilities.
4626 */
1c4cb928 4627 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4628 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4629 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4630 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4631 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4632 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4633 netdev_info(sdata->dev,
d545daba 4634 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4635 }
4636 }
77fdaa12 4637
d545daba 4638 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4639 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4640 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4641 }
ef96a842 4642
dd5ecfea
JB		 4643 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4644 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4645
4e74bfdb
JB		 4646 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4647 sband = local->hw.wiphy->bands[req->bss->channel->band];
4648 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4649 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4650 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4651 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4652 if (!bss->wmm_used &&
4653 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4654 netdev_info(sdata->dev,
4655 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4656 }
4e74bfdb 4657
d545daba
MP		 4658 /* disable VHT if we don't support it or the AP doesn't use WMM */
4659 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4660 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4661 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4662 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4663 if (!bss->wmm_used &&
4664 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4665 netdev_info(sdata->dev,
4666 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4667 }
4668
ef96a842
BG		 4669 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4670 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4671 sizeof(ifmgd->ht_capa_mask));
4672
dd5ecfea
JB		 4673 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4674 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4675 sizeof(ifmgd->vht_capa_mask));
4676
77fdaa12 4677 if (req->ie && req->ie_len) {
66e67e41
JB		 4678 memcpy(assoc_data->ie, req->ie, req->ie_len);
4679 assoc_data->ie_len = req->ie_len;
4680 }
f679f65d 4681
66e67e41 4682 assoc_data->bss = req->bss;
f679f65d 4683
af6b6374
JB		 4684 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4685 if (ifmgd->powersave)
04ecd257 4686 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4687 else
04ecd257 4688 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4689 } else
04ecd257 4690 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4691
66e67e41 4692 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4693 assoc_data->supp_rates = bss->supp_rates;
4694 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4695
9caf0364 4696 rcu_read_lock();
9dde6423
JB		 4697 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4698 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4699 assoc_data->ap_ht_param =
4700 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4701 else
a8243b72 4702 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4703 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4704 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4705 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4706 sizeof(struct ieee80211_vht_cap));
4707 else
4708 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4709 rcu_read_unlock();
63f170e0 4710
848955cc
JB		 4711 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
4712 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK),
4713 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4714 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
4715
ab13315a 4716 if (bss->wmm_used && bss->uapsd_supported &&
848955cc 4717 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
76f0303d 4718 assoc_data->uapsd = true;
ab13315a
KV		 4719 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4720 } else {
76f0303d 4721 assoc_data->uapsd = false;
ab13315a
KV		 4722 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4723 }
4724
77fdaa12 4725 if (req->prev_bssid)
66e67e41 4726 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4727
4728 if (req->use_mfp) {
4729 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4730 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4731 } else {
4732 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4733 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4734 }
4735
cd2f5dd7
AK		 4736 if (req->flags & ASSOC_REQ_USE_RRM)
4737 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
4738 else
4739 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
4740
77fdaa12
JB		 4741 if (req->crypto.control_port)
4742 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4743 else
4744 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4745
a621fa4d
JB		 4746 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4747 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4748 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4749 sdata->vif.type);
a621fa4d 4750
66e67e41
JB		 4751 /* kick off associate process */
4752
4753 ifmgd->assoc_data = assoc_data;
826262c3 4754 ifmgd->dtim_period = 0;
989c6505 4755 ifmgd->have_beacon = false;
66e67e41 4756
a1cf775d
JB		 4757 err = ieee80211_prep_connection(sdata, req->bss, true);
4758 if (err)
4759 goto err_clear;
66e67e41 4760
c65dd147
EG		 4761 rcu_read_lock();
4762 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4763
c65dd147
EG		 4764 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4765 !beacon_ies) {
4766 /*
4767 * Wait up to one beacon interval ...
4768 * should this be more if we miss one?
4769 */
4770 sdata_info(sdata, "waiting for beacon from %pM\n",
4771 ifmgd->bssid);
4772 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4773 assoc_data->timeout_started = true;
c65dd147
EG		 4774 assoc_data->need_beacon = true;
4775 } else if (beacon_ies) {
4776 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4777 beacon_ies->data,
4778 beacon_ies->len);
ef429dad
JB		 4779 u8 dtim_count = 0;
4780
c65dd147
EG		 4781 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4782 const struct ieee80211_tim_ie *tim;
4783 tim = (void *)(tim_ie + 2);
4784 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4785 dtim_count = tim->dtim_count;
826262c3 4786 }
989c6505 4787 ifmgd->have_beacon = true;
66e67e41 4788 assoc_data->timeout = jiffies;
89afe614 4789 assoc_data->timeout_started = true;
ef429dad
JB		 4790
4791 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4792 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4793 sdata->vif.bss_conf.sync_device_ts =
4794 bss->device_ts_beacon;
4795 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4796 }
c65dd147
EG		 4797 } else {
4798 assoc_data->timeout = jiffies;
89afe614 4799 assoc_data->timeout_started = true;
66e67e41 4800 }
c65dd147
EG		 4801 rcu_read_unlock();
4802
8d61ffa5 4803 run_again(sdata, assoc_data->timeout);
66e67e41 4804
fcff4f10
PS		 4805 if (bss->corrupt_data) {
4806 char *corrupt_type = "data";
4807 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4808 if (bss->corrupt_data &
4809 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4810 corrupt_type = "beacon and probe response";
4811 else
4812 corrupt_type = "beacon";
4813 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4814 corrupt_type = "probe response";
bdcbd8e0
JB		 4815 sdata_info(sdata, "associating with AP with corrupt %s\n",
4816 corrupt_type);
fcff4f10
PS		 4817 }
4818
8d61ffa5 4819 return 0;
66e67e41 4820 err_clear:
3d2abdfd
EP		 4821 memset(ifmgd->bssid, 0, ETH_ALEN);
4822 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4823 ifmgd->assoc_data = NULL;
4824 err_free:
4825 kfree(assoc_data);
66e67e41 4826 return err;
f0706e82
JB		 4827}
4828
77fdaa12 4829int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4830 struct cfg80211_deauth_request *req)
f0706e82 4831{
46900298 4832 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4833 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4834 bool tx = !req->local_state_change;
f0706e82 4835
c9c3a060
JB		 4836 if (ifmgd->auth_data &&
4837 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4838 sdata_info(sdata,
4839 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4840 req->bssid, req->reason_code,
4841 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4842
8c7d857c 4843 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4844 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4845 IEEE80211_STYPE_DEAUTH,
6863255b 4846 req->reason_code, tx,
37ad3888 4847 frame_buf);
86552017 4848 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4849 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4850 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4851
c9c3a060 4852 return 0;
8c7d857c
EG		 4853 }
4854
86552017
JB		 4855 if (ifmgd->associated &&
4856 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4857 sdata_info(sdata,
4858 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4859 req->bssid, req->reason_code,
4860 ieee80211_get_reason_code_string(req->reason_code));
4861
86552017
JB		 4862 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4863 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4864 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4865 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4866 return 0;
4867 }
86552017 4868
c9c3a060 4869 return -ENOTCONN;
f0706e82 4870}
84363e6e 4871
77fdaa12 4872int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4873 struct cfg80211_disassoc_request *req)
9c6bd790 4874{
77fdaa12 4875 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4876 u8 bssid[ETH_ALEN];
6ae16775 4877 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4878
8d8b261a
JB		 4879 /*
4880 * cfg80211 should catch this ... but it's racy since
4881 * we can receive a disassoc frame, process it, hand it
4882 * to cfg80211 while that's in a locked section already
4883 * trying to tell us that the user wants to disconnect.
4884 */
8d61ffa5 4885 if (ifmgd->associated != req->bss)
77fdaa12 4886 return -ENOLINK;
77fdaa12 4887
bdcbd8e0 4888 sdata_info(sdata,
dfa1ad29
CO		 4889 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4890 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4891
e69e95db 4892 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4893 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4894 req->reason_code, !req->local_state_change,
4895 frame_buf);
10f644a4 4896
6ff57cf8
JB		 4897 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4898 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4899
10f644a4
JB		 4900 return 0;
4901}
026331c4 4902
afa762f6 4903void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4904{
4905 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4906
49921859
BG		 4907 /*
4908 * Make sure some work items will not run after this,
4909 * they will not do anything but might not have been
4910 * cancelled when disconnecting.
4911 */
4912 cancel_work_sync(&ifmgd->monitor_work);
4913 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4914 cancel_work_sync(&ifmgd->request_smps_work);
4915 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4916 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 4917 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 4918
8d61ffa5 4919 sdata_lock(sdata);
959867fa
JB		 4920 if (ifmgd->assoc_data) {
4921 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4922 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4923 cfg80211_assoc_timeout(sdata->dev, bss);
4924 }
54e4ffb2
JB		 4925 if (ifmgd->auth_data)
4926 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 4927 spin_lock_bh(&ifmgd->teardown_lock);
4928 if (ifmgd->teardown_skb) {
4929 kfree_skb(ifmgd->teardown_skb);
4930 ifmgd->teardown_skb = NULL;
4931 ifmgd->orig_teardown_skb = NULL;
4932 }
4933 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 4934 del_timer_sync(&ifmgd->timer);
8d61ffa5 4935 sdata_unlock(sdata);
54e4ffb2
JB		 4936}
4937
a97c13c3
JO		 4938void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4939 enum nl80211_cqm_rssi_threshold_event rssi_event,
4940 gfp_t gfp)
4941{
4942 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4943
b5878a2d
JB		 4944 trace_api_cqm_rssi_notify(sdata, rssi_event);
4945
a97c13c3
JO		 4946 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4947}
4948EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
98f03342
JB		 4949
4950void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
4951{
4952 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4953
4954 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
4955
4956 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
4957}
4958EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
Ubuntu Jammy Linux kernel mirror