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mac80211: provide interface to driver to set VHT MU-MIMO data
[mirror_ubuntu-bionic-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
322cd406 9 * Copyright (C) 2015 Intel Deutschland GmbH
f0706e82
JB		 10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
5b323edb 16#include <linux/delay.h>
f0706e82
JB		 17#include <linux/if_ether.h>
18#include <linux/skbuff.h>
f0706e82 19#include <linux/if_arp.h>
f0706e82 20#include <linux/etherdevice.h>
d9b93842 21#include <linux/moduleparam.h>
d0709a65 22#include <linux/rtnetlink.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
391a200a
JM		 83/*
84 * How many Beacon frames need to have been used in average signal strength
85 * before starting to indicate signal change events.
86 */
87#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
88
ca386f31
JB		 89/*
90 * We can have multiple work items (and connection probing)
91 * scheduling this timer, but we need to take care to only
92 * reschedule it when it should fire _earlier_ than it was
93 * asked for before, or if it's not pending right now. This
94 * function ensures that. Note that it then is required to
95 * run this function for all timeouts after the first one
96 * has happened -- the work that runs from this timer will
97 * do that.
98 */
8d61ffa5
JB		 99static void run_again(struct ieee80211_sub_if_data *sdata,
100 unsigned long timeout)
ca386f31 101{
8d61ffa5 102 sdata_assert_lock(sdata);
ca386f31 103
8d61ffa5
JB		 104 if (!timer_pending(&sdata->u.mgd.timer) ||
105 time_before(timeout, sdata->u.mgd.timer.expires))
106 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 107}
108
d3a910a8 109void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 110{
c1288b12 111 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 112 return;
113
30686bf7 114 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
7eeff74c
JB		 115 return;
116
b291ba11 117 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 118 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 119}
120
be099e82
LR		 121void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
122{
0c699c3a
LR		 123 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
124
8628172f
SG		 125 if (unlikely(!sdata->u.mgd.associated))
126 return;
127
448cd2e2
EP		 128 ifmgd->probe_send_count = 0;
129
30686bf7 130 if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
be099e82
LR		 131 return;
132
133 mod_timer(&sdata->u.mgd.conn_mon_timer,
134 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
135}
136
5484e237 137static int ecw2cw(int ecw)
60f8b39c 138{
5484e237 139 return (1 << ecw) - 1;
60f8b39c
JB		 140}
141
6565ec9b
JB		 142static u32
143ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
144 struct ieee80211_supported_band *sband,
145 struct ieee80211_channel *channel,
53b954ee 146 const struct ieee80211_ht_cap *ht_cap,
6565ec9b
JB		 147 const struct ieee80211_ht_operation *ht_oper,
148 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 149 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 150{
5cdaed1e 151 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b 152 struct cfg80211_chan_def vht_chandef;
179b8fc7 153 struct ieee80211_sta_ht_cap sta_ht_cap;
6565ec9b
JB		 154 u32 ht_cfreq, ret;
155
179b8fc7
CRI		 156 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
157 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
158
6565ec9b
JB		 159 chandef->chan = channel;
160 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
161 chandef->center_freq1 = channel->center_freq;
162 chandef->center_freq2 = 0;
163
179b8fc7 164 if (!ht_cap || !ht_oper || !sta_ht_cap.ht_supported) {
6565ec9b
JB		 165 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
166 goto out;
167 }
168
169 chandef->width = NL80211_CHAN_WIDTH_20;
170
53b954ee
EP		 171 if (!(ht_cap->cap_info &
172 cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) {
f3000e1b 173 ret = IEEE80211_STA_DISABLE_40MHZ;
7e6225a1 174 vht_chandef = *chandef;
53b954ee
EP		 175 goto out;
176 }
177
6565ec9b
JB		 178 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
179 channel->band);
180 /* check that channel matches the right operating channel */
5cdaed1e 181 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 182 /*
183 * It's possible that some APs are confused here;
184 * Netgear WNDR3700 sometimes reports 4 higher than
185 * the actual channel in association responses, but
186 * since we look at probe response/beacon data here
187 * it should be OK.
188 */
5cdaed1e
JB		 189 sdata_info(sdata,
190 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
191 channel->center_freq, ht_cfreq,
192 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 193 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
194 goto out;
195 }
196
197 /* check 40 MHz support, if we have it */
179b8fc7 198 if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
8ac3c704 199 ieee80211_chandef_ht_oper(ht_oper, chandef);
6565ec9b
JB		 200 } else {
201 /* 40 MHz (and 80 MHz) must be supported for VHT */
202 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 203 /* also mark 40 MHz disabled */
204 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 205 goto out;
206 }
207
208 if (!vht_oper || !sband->vht_cap.vht_supported) {
209 ret = IEEE80211_STA_DISABLE_VHT;
210 goto out;
211 }
212
8ac3c704
JB		 213 vht_chandef = *chandef;
214 if (!ieee80211_chandef_vht_oper(vht_oper, &vht_chandef)) {
5cdaed1e 215 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2 216 sdata_info(sdata,
8ac3c704 217 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 218 ret = IEEE80211_STA_DISABLE_VHT;
219 goto out;
220 }
221
222 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 223 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 224 sdata_info(sdata,
225 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 226 ret = IEEE80211_STA_DISABLE_VHT;
227 goto out;
228 }
229
230 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
231 ret = 0;
232 goto out;
233 }
234
235 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 236 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 237 sdata_info(sdata,
238 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 239 ret = IEEE80211_STA_DISABLE_VHT;
240 goto out;
241 }
242
243 *chandef = vht_chandef;
244
245 ret = 0;
246
247out:
963a1852
JB		 248 /*
249 * When tracking the current AP, don't do any further checks if the
250 * new chandef is identical to the one we're currently using for the
251 * connection. This keeps us from playing ping-pong with regulatory,
252 * without it the following can happen (for example):
253 * - connect to an AP with 80 MHz, world regdom allows 80 MHz
254 * - AP advertises regdom US
255 * - CRDA loads regdom US with 80 MHz prohibited (old database)
256 * - the code below detects an unsupported channel, downgrades, and
257 * we disconnect from the AP in the caller
258 * - disconnect causes CRDA to reload world regdomain and the game
259 * starts anew.
260 * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881)
261 *
262 * It seems possible that there are still scenarios with CSA or real
263 * bandwidth changes where a this could happen, but those cases are
264 * less common and wouldn't completely prevent using the AP.
265 */
266 if (tracking &&
267 cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef))
268 return ret;
269
586e01ed
JB		 270 /* don't print the message below for VHT mismatch if VHT is disabled */
271 if (ret & IEEE80211_STA_DISABLE_VHT)
272 vht_chandef = *chandef;
273
ddfe49b4
JB		 274 /*
275 * Ignore the DISABLED flag when we're already connected and only
276 * tracking the APs beacon for bandwidth changes - otherwise we
277 * might get disconnected here if we connect to an AP, update our
278 * regulatory information based on the AP's country IE and the
279 * information we have is wrong/outdated and disables the channel
280 * that we're actually using for the connection to the AP.
281 */
6565ec9b 282 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 283 tracking ? 0 :
284 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 285 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
286 ret = IEEE80211_STA_DISABLE_HT |
287 IEEE80211_STA_DISABLE_VHT;
b56e4b85 288 break;
6565ec9b
JB		 289 }
290
e6b7cde4 291 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 292 }
293
5cdaed1e 294 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 295 sdata_info(sdata,
296 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
297
298 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
299 return ret;
300}
301
30eb1dc2
JB		 302static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
303 struct sta_info *sta,
53b954ee 304 const struct ieee80211_ht_cap *ht_cap,
30eb1dc2
JB		 305 const struct ieee80211_ht_operation *ht_oper,
306 const struct ieee80211_vht_operation *vht_oper,
307 const u8 *bssid, u32 *changed)
d5522e03
JB		 308{
309 struct ieee80211_local *local = sdata->local;
30eb1dc2 310 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 311 struct ieee80211_supported_band *sband;
55de908a 312 struct ieee80211_channel *chan;
30eb1dc2 313 struct cfg80211_chan_def chandef;
9ed6bcce 314 u16 ht_opmode;
30eb1dc2
JB		 315 u32 flags;
316 enum ieee80211_sta_rx_bandwidth new_sta_bw;
317 int ret;
d5522e03 318
30eb1dc2
JB		 319 /* if HT was/is disabled, don't track any bandwidth changes */
320 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 321 return 0;
322
30eb1dc2
JB		 323 /* don't check VHT if we associated as non-VHT station */
324 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
325 vht_oper = NULL;
326
327 if (WARN_ON_ONCE(!sta))
328 return -EINVAL;
329
017b45bb
AA		 330 /*
331 * if bss configuration changed store the new one -
332 * this may be applicable even if channel is identical
333 */
334 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
335 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
336 *changed |= BSS_CHANGED_HT;
337 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
338 }
339
f2d9330e 340 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 341 sband = local->hw.wiphy->bands[chan->band];
d5522e03 342
30eb1dc2 343 /* calculate new channel (type) based on HT/VHT operation IEs */
53b954ee
EP		 344 flags = ieee80211_determine_chantype(sdata, sband, chan,
345 ht_cap, ht_oper, vht_oper,
346 &chandef, true);
30eb1dc2
JB		 347
348 /*
349 * Downgrade the new channel if we associated with restricted
350 * capabilities. For example, if we associated as a 20 MHz STA
351 * to a 40 MHz AP (due to regulatory, capabilities or config
352 * reasons) then switching to a 40 MHz channel now won't do us
353 * any good -- we couldn't use it with the AP.
354 */
355 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
356 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 357 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 358 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
359 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 360 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 361 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
362 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 363 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 364
365 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
366 return 0;
367
368 sdata_info(sdata,
369 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
370 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
371 chandef.center_freq1, chandef.center_freq2);
372
373 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
374 IEEE80211_STA_DISABLE_VHT |
375 IEEE80211_STA_DISABLE_40MHZ |
376 IEEE80211_STA_DISABLE_80P80MHZ |
377 IEEE80211_STA_DISABLE_160MHZ)) ||
378 !cfg80211_chandef_valid(&chandef)) {
379 sdata_info(sdata,
380 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
381 ifmgd->bssid);
382 return -EINVAL;
383 }
384
385 switch (chandef.width) {
386 case NL80211_CHAN_WIDTH_20_NOHT:
387 case NL80211_CHAN_WIDTH_20:
388 new_sta_bw = IEEE80211_STA_RX_BW_20;
389 break;
4bf88530 390 case NL80211_CHAN_WIDTH_40:
30eb1dc2 391 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 392 break;
30eb1dc2
JB		 393 case NL80211_CHAN_WIDTH_80:
394 new_sta_bw = IEEE80211_STA_RX_BW_80;
395 break;
396 case NL80211_CHAN_WIDTH_80P80:
397 case NL80211_CHAN_WIDTH_160:
398 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 399 break;
30eb1dc2
JB		 400 default:
401 return -EINVAL;
64f68e5d 402 }
d5522e03 403
30eb1dc2
JB		 404 if (new_sta_bw > sta->cur_max_bandwidth)
405 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 406
30eb1dc2
JB		 407 if (new_sta_bw < sta->sta.bandwidth) {
408 sta->sta.bandwidth = new_sta_bw;
409 rate_control_rate_update(local, sband, sta,
410 IEEE80211_RC_BW_CHANGED);
411 }
64f68e5d 412
30eb1dc2
JB		 413 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
414 if (ret) {
415 sdata_info(sdata,
416 "AP %pM changed bandwidth to incompatible one - disconnect\n",
417 ifmgd->bssid);
418 return ret;
419 }
7cc44ed4 420
30eb1dc2
JB		 421 if (new_sta_bw > sta->sta.bandwidth) {
422 sta->sta.bandwidth = new_sta_bw;
423 rate_control_rate_update(local, sband, sta,
424 IEEE80211_RC_BW_CHANGED);
0aaffa9b 425 }
d5522e03 426
30eb1dc2 427 return 0;
d5522e03
JB		 428}
429
9c6bd790
JB		 430/* frame sending functions */
431
66e67e41 432static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 433 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 434 struct ieee80211_supported_band *sband,
435 struct ieee80211_channel *channel,
436 enum ieee80211_smps_mode smps)
437{
66e67e41
JB		 438 u8 *pos;
439 u32 flags = channel->flags;
440 u16 cap;
441 struct ieee80211_sta_ht_cap ht_cap;
442
443 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
444
66e67e41
JB		 445 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
446 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
447
66e67e41
JB		 448 /* determine capability flags */
449 cap = ht_cap.cap;
450
9dde6423 451 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 452 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
453 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
454 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
455 cap &= ~IEEE80211_HT_CAP_SGI_40;
456 }
457 break;
458 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
459 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
460 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
461 cap &= ~IEEE80211_HT_CAP_SGI_40;
462 }
463 break;
464 }
465
24398e39
JB		 466 /*
467 * If 40 MHz was disabled associate as though we weren't
468 * capable of 40 MHz -- some broken APs will never fall
469 * back to trying to transmit in 20 MHz.
470 */
471 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
472 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
473 cap &= ~IEEE80211_HT_CAP_SGI_40;
474 }
475
66e67e41
JB		 476 /* set SM PS mode properly */
477 cap &= ~IEEE80211_HT_CAP_SM_PS;
478 switch (smps) {
479 case IEEE80211_SMPS_AUTOMATIC:
480 case IEEE80211_SMPS_NUM_MODES:
481 WARN_ON(1);
482 case IEEE80211_SMPS_OFF:
483 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
484 IEEE80211_HT_CAP_SM_PS_SHIFT;
485 break;
486 case IEEE80211_SMPS_STATIC:
487 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
488 IEEE80211_HT_CAP_SM_PS_SHIFT;
489 break;
490 case IEEE80211_SMPS_DYNAMIC:
491 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
492 IEEE80211_HT_CAP_SM_PS_SHIFT;
493 break;
494 }
495
496 /* reserve and fill IE */
497 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
498 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
499}
500
322cd406
SS		 501/* This function determines vht capability flags for the association
502 * and builds the IE.
503 * Note - the function may set the owner of the MU-MIMO capability
504 */
d545daba
MP		 505static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
506 struct sk_buff *skb,
b08fbbd8
JB		 507 struct ieee80211_supported_band *sband,
508 struct ieee80211_vht_cap *ap_vht_cap)
d545daba 509{
322cd406 510 struct ieee80211_local *local = sdata->local;
d545daba
MP		 511 u8 *pos;
512 u32 cap;
513 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 514 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 515
516 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
517
518 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 519 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 520
521 /* determine capability flags */
522 cap = vht_cap.cap;
523
f2d9d270 524 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
575f0530
JB		 525 u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
526
527 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
528 if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ ||
529 bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ)
530 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
f2d9d270
JB		 531 }
532
533 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
534 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
575f0530 535 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
f2d9d270
JB		 536 }
537
b08fbbd8
JB		 538 /*
539 * Some APs apparently get confused if our capabilities are better
540 * than theirs, so restrict what we advertise in the assoc request.
541 */
542 if (!(ap_vht_cap->vht_cap_info &
543 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
322cd406
SS		 544 cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
545 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
546 else if (!(ap_vht_cap->vht_cap_info &
547 cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE)))
548 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
549
550 /*
551 * If some other vif is using the MU-MIMO capablity we cannot associate
552 * using MU-MIMO - this will lead to contradictions in the group-id
553 * mechanism.
554 * Ownership is defined since association request, in order to avoid
555 * simultaneous associations with MU-MIMO.
556 */
557 if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) {
558 bool disable_mu_mimo = false;
559 struct ieee80211_sub_if_data *other;
560
561 list_for_each_entry_rcu(other, &local->interfaces, list) {
562 if (other->flags & IEEE80211_SDATA_MU_MIMO_OWNER) {
563 disable_mu_mimo = true;
564 break;
565 }
566 }
567 if (disable_mu_mimo)
568 cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
569 else
570 sdata->flags |= IEEE80211_SDATA_MU_MIMO_OWNER;
571 }
b08fbbd8 572
c1cf6d4e
ES		 573 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
574
575 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
576 our_bf_sts = cap & mask;
577
578 if (ap_bf_sts < our_bf_sts) {
579 cap &= ~mask;
580 cap |= ap_bf_sts;
581 }
582
d545daba 583 /* reserve and fill IE */
d4950281 584 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 585 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
586}
587
66e67e41
JB		 588static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
589{
590 struct ieee80211_local *local = sdata->local;
591 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
592 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
593 struct sk_buff *skb;
594 struct ieee80211_mgmt *mgmt;
595 u8 *pos, qos_info;
596 size_t offset = 0, noffset;
2103dec1 597 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 598 u16 capab;
599 struct ieee80211_supported_band *sband;
55de908a
JB		 600 struct ieee80211_chanctx_conf *chanctx_conf;
601 struct ieee80211_channel *chan;
2103dec1 602 u32 rate_flags, rates = 0;
66e67e41 603
8d61ffa5 604 sdata_assert_lock(sdata);
66e67e41 605
55de908a
JB		 606 rcu_read_lock();
607 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
608 if (WARN_ON(!chanctx_conf)) {
609 rcu_read_unlock();
610 return;
611 }
4bf88530 612 chan = chanctx_conf->def.chan;
2103dec1 613 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 614 rcu_read_unlock();
615 sband = local->hw.wiphy->bands[chan->band];
2103dec1 616 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 617
618 if (assoc_data->supp_rates_len) {
619 /*
620 * Get all rates supported by the device and the AP as
621 * some APs don't like getting a superset of their rates
622 * in the association request (e.g. D-Link DAP 1353 in
623 * b-only mode)...
624 */
2103dec1
SW		 625 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
626 assoc_data->supp_rates,
627 assoc_data->supp_rates_len,
628 &rates);
66e67e41
JB		 629 } else {
630 /*
631 * In case AP not provide any supported rates information
632 * before association, we send information element(s) with
633 * all rates that we support.
634 */
2103dec1
SW		 635 rates_len = 0;
636 for (i = 0; i < sband->n_bitrates; i++) {
637 if ((rate_flags & sband->bitrates[i].flags)
638 != rate_flags)
639 continue;
640 rates |= BIT(i);
641 rates_len++;
642 }
66e67e41
JB		 643 }
644
645 skb = alloc_skb(local->hw.extra_tx_headroom +
646 sizeof(*mgmt) + /* bit too much but doesn't matter */
647 2 + assoc_data->ssid_len + /* SSID */
648 4 + rates_len + /* (extended) rates */
649 4 + /* power capability */
650 2 + 2 * sband->n_channels + /* supported channels */
651 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 652 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 653 assoc_data->ie_len + /* extra IEs */
654 9, /* WMM */
655 GFP_KERNEL);
656 if (!skb)
657 return;
658
659 skb_reserve(skb, local->hw.extra_tx_headroom);
660
661 capab = WLAN_CAPABILITY_ESS;
662
663 if (sband->band == IEEE80211_BAND_2GHZ) {
ea1b2b45
JB		 664 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
665 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
66e67e41
JB		 666 }
667
668 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
669 capab |= WLAN_CAPABILITY_PRIVACY;
670
671 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
30686bf7 672 ieee80211_hw_check(&local->hw, SPECTRUM_MGMT))
66e67e41
JB		 673 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
674
cd2f5dd7
AK		 675 if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM)
676 capab |= WLAN_CAPABILITY_RADIO_MEASURE;
677
66e67e41
JB		 678 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
679 memset(mgmt, 0, 24);
680 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
681 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
682 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
683
684 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
685 skb_put(skb, 10);
686 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
687 IEEE80211_STYPE_REASSOC_REQ);
688 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
689 mgmt->u.reassoc_req.listen_interval =
690 cpu_to_le16(local->hw.conf.listen_interval);
691 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
692 ETH_ALEN);
693 } else {
694 skb_put(skb, 4);
695 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
696 IEEE80211_STYPE_ASSOC_REQ);
697 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
698 mgmt->u.assoc_req.listen_interval =
699 cpu_to_le16(local->hw.conf.listen_interval);
700 }
701
702 /* SSID */
703 pos = skb_put(skb, 2 + assoc_data->ssid_len);
704 *pos++ = WLAN_EID_SSID;
705 *pos++ = assoc_data->ssid_len;
706 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
707
708 /* add all rates which were marked to be used above */
709 supp_rates_len = rates_len;
710 if (supp_rates_len > 8)
711 supp_rates_len = 8;
712
713 pos = skb_put(skb, supp_rates_len + 2);
714 *pos++ = WLAN_EID_SUPP_RATES;
715 *pos++ = supp_rates_len;
716
717 count = 0;
718 for (i = 0; i < sband->n_bitrates; i++) {
719 if (BIT(i) & rates) {
2103dec1
SW		 720 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
721 5 * (1 << shift));
722 *pos++ = (u8) rate;
66e67e41
JB		 723 if (++count == 8)
724 break;
725 }
726 }
727
728 if (rates_len > count) {
729 pos = skb_put(skb, rates_len - count + 2);
730 *pos++ = WLAN_EID_EXT_SUPP_RATES;
731 *pos++ = rates_len - count;
732
733 for (i++; i < sband->n_bitrates; i++) {
734 if (BIT(i) & rates) {
2103dec1
SW		 735 int rate;
736 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
737 5 * (1 << shift));
738 *pos++ = (u8) rate;
66e67e41
JB		 739 }
740 }
741 }
742
cd2f5dd7
AK		 743 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
744 capab & WLAN_CAPABILITY_RADIO_MEASURE) {
66e67e41
JB		 745 pos = skb_put(skb, 4);
746 *pos++ = WLAN_EID_PWR_CAPABILITY;
747 *pos++ = 2;
748 *pos++ = 0; /* min tx power */
0430c883
SW		 749 /* max tx power */
750 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
cd2f5dd7 751 }
66e67e41 752
cd2f5dd7 753 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
66e67e41
JB		 754 /* TODO: get this in reg domain format */
755 pos = skb_put(skb, 2 * sband->n_channels + 2);
756 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
757 *pos++ = 2 * sband->n_channels;
758 for (i = 0; i < sband->n_channels; i++) {
759 *pos++ = ieee80211_frequency_to_channel(
760 sband->channels[i].center_freq);
761 *pos++ = 1; /* one channel in the subband*/
762 }
763 }
764
765 /* if present, add any custom IEs that go before HT */
b3f51e94 766 if (assoc_data->ie_len) {
66e67e41
JB		 767 static const u8 before_ht[] = {
768 WLAN_EID_SSID,
769 WLAN_EID_SUPP_RATES,
770 WLAN_EID_EXT_SUPP_RATES,
771 WLAN_EID_PWR_CAPABILITY,
772 WLAN_EID_SUPPORTED_CHANNELS,
773 WLAN_EID_RSN,
774 WLAN_EID_QOS_CAPA,
775 WLAN_EID_RRM_ENABLED_CAPABILITIES,
776 WLAN_EID_MOBILITY_DOMAIN,
8ed28747
JB		 777 WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */
778 WLAN_EID_RIC_DATA, /* reassoc only */
66e67e41
JB		 779 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
780 };
8ed28747
JB		 781 static const u8 after_ric[] = {
782 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
783 WLAN_EID_HT_CAPABILITY,
784 WLAN_EID_BSS_COEX_2040,
785 WLAN_EID_EXT_CAPABILITY,
786 WLAN_EID_QOS_TRAFFIC_CAPA,
787 WLAN_EID_TIM_BCAST_REQ,
788 WLAN_EID_INTERWORKING,
789 /* 60GHz doesn't happen right now */
790 WLAN_EID_VHT_CAPABILITY,
791 WLAN_EID_OPMODE_NOTIF,
792 };
793
794 noffset = ieee80211_ie_split_ric(assoc_data->ie,
795 assoc_data->ie_len,
796 before_ht,
797 ARRAY_SIZE(before_ht),
798 after_ric,
799 ARRAY_SIZE(after_ric),
800 offset);
66e67e41
JB		 801 pos = skb_put(skb, noffset - offset);
802 memcpy(pos, assoc_data->ie + offset, noffset - offset);
803 offset = noffset;
804 }
805
f2d9d270
JB		 806 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
807 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
808 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
809
a8243b72 810 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 811 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 812 sband, chan, sdata->smps_mode);
66e67e41 813
3de3802c
JB		 814 /* if present, add any custom IEs that go before VHT */
815 if (assoc_data->ie_len) {
816 static const u8 before_vht[] = {
817 WLAN_EID_SSID,
818 WLAN_EID_SUPP_RATES,
819 WLAN_EID_EXT_SUPP_RATES,
820 WLAN_EID_PWR_CAPABILITY,
821 WLAN_EID_SUPPORTED_CHANNELS,
822 WLAN_EID_RSN,
823 WLAN_EID_QOS_CAPA,
824 WLAN_EID_RRM_ENABLED_CAPABILITIES,
825 WLAN_EID_MOBILITY_DOMAIN,
826 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
827 WLAN_EID_HT_CAPABILITY,
828 WLAN_EID_BSS_COEX_2040,
829 WLAN_EID_EXT_CAPABILITY,
830 WLAN_EID_QOS_TRAFFIC_CAPA,
831 WLAN_EID_TIM_BCAST_REQ,
832 WLAN_EID_INTERWORKING,
833 };
8ed28747
JB		 834
835 /* RIC already taken above, so no need to handle here anymore */
3de3802c
JB		 836 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
837 before_vht, ARRAY_SIZE(before_vht),
838 offset);
839 pos = skb_put(skb, noffset - offset);
840 memcpy(pos, assoc_data->ie + offset, noffset - offset);
841 offset = noffset;
842 }
843
d545daba 844 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 845 ieee80211_add_vht_ie(sdata, skb, sband,
846 &assoc_data->ap_vht_cap);
d545daba 847
66e67e41 848 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 849 if (assoc_data->ie_len) {
66e67e41
JB		 850 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
851 assoc_data->ie_len,
852 offset);
853 pos = skb_put(skb, noffset - offset);
854 memcpy(pos, assoc_data->ie + offset, noffset - offset);
855 offset = noffset;
856 }
857
76f0303d
JB		 858 if (assoc_data->wmm) {
859 if (assoc_data->uapsd) {
dc41e4d4
EP		 860 qos_info = ifmgd->uapsd_queues;
861 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 862 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
863 } else {
864 qos_info = 0;
865 }
866
40b861a0 867 pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
66e67e41
JB		 868 }
869
870 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 871 if (assoc_data->ie_len) {
66e67e41
JB		 872 noffset = assoc_data->ie_len;
873 pos = skb_put(skb, noffset - offset);
874 memcpy(pos, assoc_data->ie + offset, noffset - offset);
875 }
876
a1845fc7
JB		 877 drv_mgd_prepare_tx(local, sdata);
878
66e67e41 879 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
30686bf7 880 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 881 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
882 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 883 ieee80211_tx_skb(sdata, skb);
884}
885
572e0012
KV		 886void ieee80211_send_pspoll(struct ieee80211_local *local,
887 struct ieee80211_sub_if_data *sdata)
888{
572e0012
KV		 889 struct ieee80211_pspoll *pspoll;
890 struct sk_buff *skb;
572e0012 891
d8cd189e
KV		 892 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
893 if (!skb)
572e0012 894 return;
572e0012 895
d8cd189e
KV		 896 pspoll = (struct ieee80211_pspoll *) skb->data;
897 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 898
62ae67be
JB		 899 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
900 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 901}
902
965bedad
JB		 903void ieee80211_send_nullfunc(struct ieee80211_local *local,
904 struct ieee80211_sub_if_data *sdata,
076cdcb1 905 bool powersave)
965bedad
JB		 906{
907 struct sk_buff *skb;
d8cd189e 908 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 909 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 910
d8cd189e
KV		 911 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
912 if (!skb)
965bedad 913 return;
965bedad 914
d8cd189e 915 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 916 if (powersave)
d8cd189e 917 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 918
6c17b77b
SF		 919 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
920 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425 921
30686bf7 922 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
ff40b425
PF		 923 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
924
392b9ffb 925 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 926 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
927
62ae67be 928 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 929}
930
d524215f
FF		 931static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
932 struct ieee80211_sub_if_data *sdata)
933{
934 struct sk_buff *skb;
935 struct ieee80211_hdr *nullfunc;
936 __le16 fc;
937
938 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
939 return;
940
941 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 942 if (!skb)
d524215f 943 return;
d15b8459 944
d524215f
FF		 945 skb_reserve(skb, local->hw.extra_tx_headroom);
946
947 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
948 memset(nullfunc, 0, 30);
949 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
950 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
951 nullfunc->frame_control = fc;
952 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
953 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
954 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
955 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
956
957 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
958 ieee80211_tx_skb(sdata, skb);
959}
960
cc32abd4
JB		 961/* spectrum management related things */
962static void ieee80211_chswitch_work(struct work_struct *work)
963{
964 struct ieee80211_sub_if_data *sdata =
965 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 966 struct ieee80211_local *local = sdata->local;
cc32abd4 967 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575 968 int ret;
cc32abd4 969
9607e6b6 970 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 971 return;
972
8d61ffa5 973 sdata_lock(sdata);
4c3ebc56
MK		 974 mutex_lock(&local->mtx);
975 mutex_lock(&local->chanctx_mtx);
976
77fdaa12
JB		 977 if (!ifmgd->associated)
978 goto out;
cc32abd4 979
4c3ebc56
MK		 980 if (!sdata->vif.csa_active)
981 goto out;
982
983 /*
984 * using reservation isn't immediate as it may be deferred until later
985 * with multi-vif. once reservation is complete it will re-schedule the
986 * work with no reserved_chanctx so verify chandef to check if it
987 * completed successfully
988 */
989
990 if (sdata->reserved_chanctx) {
991 /*
992 * with multi-vif csa driver may call ieee80211_csa_finish()
993 * many times while waiting for other interfaces to use their
994 * reservations
995 */
996 if (sdata->reserved_ready)
997 goto out;
998
999 ret = ieee80211_vif_use_reserved_context(sdata);
1000 if (ret) {
1001 sdata_info(sdata,
1002 "failed to use reserved channel context, disconnecting (err=%d)\n",
1003 ret);
1004 ieee80211_queue_work(&sdata->local->hw,
1005 &ifmgd->csa_connection_drop_work);
1006 goto out;
1007 }
1008
1009 goto out;
1010 }
1011
1012 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
1013 &sdata->csa_chandef)) {
7578d575 1014 sdata_info(sdata,
4c3ebc56 1015 "failed to finalize channel switch, disconnecting\n");
7578d575
AN		 1016 ieee80211_queue_work(&sdata->local->hw,
1017 &ifmgd->csa_connection_drop_work);
1018 goto out;
1019 }
675a0b04 1020
cc32abd4 1021 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 1022 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 1023
0c21e632
LC		 1024 ifmgd->csa_waiting_bcn = true;
1025
1026 ieee80211_sta_reset_beacon_monitor(sdata);
1027 ieee80211_sta_reset_conn_monitor(sdata);
1028
1029out:
1030 mutex_unlock(&local->chanctx_mtx);
1031 mutex_unlock(&local->mtx);
1032 sdata_unlock(sdata);
1033}
1034
1035static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata)
1036{
1037 struct ieee80211_local *local = sdata->local;
1038 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1039 int ret;
1040
1041 sdata_assert_lock(sdata);
1042
1043 WARN_ON(!sdata->vif.csa_active);
4c3ebc56 1044
a46992b4
LC		 1045 if (sdata->csa_block_tx) {
1046 ieee80211_wake_vif_queues(local, sdata,
1047 IEEE80211_QUEUE_STOP_REASON_CSA);
1048 sdata->csa_block_tx = false;
1049 }
7578d575 1050
0c21e632
LC		 1051 sdata->vif.csa_active = false;
1052 ifmgd->csa_waiting_bcn = false;
1053
f1d65583
LC		 1054 ret = drv_post_channel_switch(sdata);
1055 if (ret) {
1056 sdata_info(sdata,
1057 "driver post channel switch failed, disconnecting\n");
1058 ieee80211_queue_work(&local->hw,
1059 &ifmgd->csa_connection_drop_work);
0c21e632 1060 return;
f1d65583 1061 }
688b1ecf
LC		 1062
1063 cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
cc32abd4
JB		 1064}
1065
5ce6e438
JB		 1066void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
1067{
55de908a
JB		 1068 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1069 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 1070
1071 trace_api_chswitch_done(sdata, success);
1072 if (!success) {
882a7c69
JB		 1073 sdata_info(sdata,
1074 "driver channel switch failed, disconnecting\n");
1075 ieee80211_queue_work(&sdata->local->hw,
1076 &ifmgd->csa_connection_drop_work);
1077 } else {
1078 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 1079 }
5ce6e438
JB		 1080}
1081EXPORT_SYMBOL(ieee80211_chswitch_done);
1082
cc32abd4
JB		 1083static void ieee80211_chswitch_timer(unsigned long data)
1084{
1085 struct ieee80211_sub_if_data *sdata =
1086 (struct ieee80211_sub_if_data *) data;
5bb644a0 1087
9b7d72c1 1088 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 1089}
1090
37799e52 1091static void
4a3cb702 1092ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
2ba45384
LC		 1093 u64 timestamp, u32 device_timestamp,
1094 struct ieee802_11_elems *elems,
04a161f4 1095 bool beacon)
cc32abd4 1096{
b4f286a1 1097 struct ieee80211_local *local = sdata->local;
cc32abd4 1098 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1099 struct cfg80211_bss *cbss = ifmgd->associated;
4c3ebc56 1100 struct ieee80211_chanctx_conf *conf;
55de908a 1101 struct ieee80211_chanctx *chanctx;
e6b7cde4 1102 enum ieee80211_band current_band;
c0f17eb9 1103 struct ieee80211_csa_ie csa_ie;
6d027bcc 1104 struct ieee80211_channel_switch ch_switch;
e6b7cde4 1105 int res;
cc32abd4 1106
8d61ffa5 1107 sdata_assert_lock(sdata);
77fdaa12 1108
37799e52 1109 if (!cbss)
cc32abd4
JB		 1110 return;
1111
b4f286a1 1112 if (local->scanning)
cc32abd4
JB		 1113 return;
1114
37799e52 1115 /* disregard subsequent announcements if we are already processing */
3e2a0226 1116 if (sdata->vif.csa_active)
cc32abd4
JB		 1117 return;
1118
e6b7cde4 1119 current_band = cbss->channel->band;
c0f17eb9 1120 memset(&csa_ie, 0, sizeof(csa_ie));
84469a45 1121 res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band,
e6b7cde4 1122 ifmgd->flags,
c0f17eb9 1123 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1124 if (res < 0)
b4f286a1 1125 ieee80211_queue_work(&local->hw,
882a7c69 1126 &ifmgd->csa_connection_drop_work);
e6b7cde4 1127 if (res)
cc32abd4 1128 return;
cd64f2a9 1129
c0f17eb9 1130 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1131 IEEE80211_CHAN_DISABLED)) {
1132 sdata_info(sdata,
1133 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1134 ifmgd->associated->bssid,
c0f17eb9
CYY		 1135 csa_ie.chandef.chan->center_freq,
1136 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1137 csa_ie.chandef.center_freq2);
85220d71
JB		 1138 ieee80211_queue_work(&local->hw,
1139 &ifmgd->csa_connection_drop_work);
1140 return;
1141 }
1142
f84eaa10
JB		 1143 if (cfg80211_chandef_identical(&csa_ie.chandef,
1144 &sdata->vif.bss_conf.chandef)) {
1145 if (ifmgd->csa_ignored_same_chan)
1146 return;
1147 sdata_info(sdata,
1148 "AP %pM tries to chanswitch to same channel, ignore\n",
1149 ifmgd->associated->bssid);
1150 ifmgd->csa_ignored_same_chan = true;
1151 return;
1152 }
1153
c5a71688
AN		 1154 /*
1155 * Drop all TDLS peers - either we disconnect or move to a different
1156 * channel from this point on. There's no telling what our peer will do.
1157 * The TDLS WIDER_BW scenario is also problematic, as peers might now
1158 * have an incompatible wider chandef.
1159 */
1160 ieee80211_teardown_tdls_peers(sdata);
1161
4c3ebc56 1162 mutex_lock(&local->mtx);
7578d575 1163 mutex_lock(&local->chanctx_mtx);
4c3ebc56
MK		 1164 conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
1165 lockdep_is_held(&local->chanctx_mtx));
1166 if (!conf) {
1167 sdata_info(sdata,
1168 "no channel context assigned to vif?, disconnecting\n");
f3b0bbb3 1169 goto drop_connection;
4c3ebc56
MK		 1170 }
1171
1172 chanctx = container_of(conf, struct ieee80211_chanctx, conf);
1173
0f791eb4 1174 if (local->use_chanctx &&
30686bf7 1175 !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) {
0f791eb4
LC		 1176 sdata_info(sdata,
1177 "driver doesn't support chan-switch with channel contexts\n");
f3b0bbb3 1178 goto drop_connection;
55de908a
JB		 1179 }
1180
6d027bcc
LC		 1181 ch_switch.timestamp = timestamp;
1182 ch_switch.device_timestamp = device_timestamp;
1183 ch_switch.block_tx = csa_ie.mode;
1184 ch_switch.chandef = csa_ie.chandef;
1185 ch_switch.count = csa_ie.count;
1186
1187 if (drv_pre_channel_switch(sdata, &ch_switch)) {
1188 sdata_info(sdata,
1189 "preparing for channel switch failed, disconnecting\n");
f3b0bbb3 1190 goto drop_connection;
6d027bcc
LC		 1191 }
1192
4c3ebc56
MK		 1193 res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef,
1194 chanctx->mode, false);
1195 if (res) {
55de908a 1196 sdata_info(sdata,
4c3ebc56
MK		 1197 "failed to reserve channel context for channel switch, disconnecting (err=%d)\n",
1198 res);
f3b0bbb3 1199 goto drop_connection;
55de908a 1200 }
b4f286a1 1201 mutex_unlock(&local->chanctx_mtx);
55de908a 1202
c46a73f3 1203 sdata->vif.csa_active = true;
4c3ebc56 1204 sdata->csa_chandef = csa_ie.chandef;
59af6928 1205 sdata->csa_block_tx = csa_ie.mode;
f84eaa10 1206 ifmgd->csa_ignored_same_chan = false;
55de908a 1207
59af6928 1208 if (sdata->csa_block_tx)
a46992b4
LC		 1209 ieee80211_stop_vif_queues(local, sdata,
1210 IEEE80211_QUEUE_STOP_REASON_CSA);
59af6928 1211 mutex_unlock(&local->mtx);
57eebdf3 1212
2f457293
LC		 1213 cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef,
1214 csa_ie.count);
1215
b4f286a1 1216 if (local->ops->channel_switch) {
5ce6e438 1217 /* use driver's channel switch callback */
0f791eb4 1218 drv_channel_switch(local, sdata, &ch_switch);
5ce6e438
JB		 1219 return;
1220 }
1221
1222 /* channel switch handled in software */
c0f17eb9 1223 if (csa_ie.count <= 1)
b4f286a1 1224 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1225 else
cc32abd4 1226 mod_timer(&ifmgd->chswitch_timer,
ff1e417c
LC		 1227 TU_TO_EXP_TIME((csa_ie.count - 1) *
1228 cbss->beacon_interval));
f3b0bbb3
JB		 1229 return;
1230 drop_connection:
1231 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work);
1232 mutex_unlock(&local->chanctx_mtx);
1233 mutex_unlock(&local->mtx);
cc32abd4
JB		 1234}
1235
24a4e400
SG		 1236static bool
1237ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
1238 struct ieee80211_channel *channel,
1239 const u8 *country_ie, u8 country_ie_len,
1240 const u8 *pwr_constr_elem,
1241 int *chan_pwr, int *pwr_reduction)
cc32abd4 1242{
04b7b2ff
JB		 1243 struct ieee80211_country_ie_triplet *triplet;
1244 int chan = ieee80211_frequency_to_channel(channel->center_freq);
24a4e400 1245 int i, chan_increment;
04b7b2ff 1246 bool have_chan_pwr = false;
cc32abd4 1247
04b7b2ff
JB		 1248 /* Invalid IE */
1249 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
24a4e400 1250 return false;
cc32abd4 1251
04b7b2ff
JB		 1252 triplet = (void *)(country_ie + 3);
1253 country_ie_len -= 3;
1254
1255 switch (channel->band) {
1256 default:
1257 WARN_ON_ONCE(1);
1258 /* fall through */
1259 case IEEE80211_BAND_2GHZ:
1260 case IEEE80211_BAND_60GHZ:
1261 chan_increment = 1;
1262 break;
1263 case IEEE80211_BAND_5GHZ:
1264 chan_increment = 4;
1265 break;
cc32abd4 1266 }
04b7b2ff
JB		 1267
1268 /* find channel */
1269 while (country_ie_len >= 3) {
1270 u8 first_channel = triplet->chans.first_channel;
1271
1272 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1273 goto next;
1274
1275 for (i = 0; i < triplet->chans.num_channels; i++) {
1276 if (first_channel + i * chan_increment == chan) {
1277 have_chan_pwr = true;
24a4e400 1278 *chan_pwr = triplet->chans.max_power;
04b7b2ff
JB		 1279 break;
1280 }
1281 }
1282 if (have_chan_pwr)
1283 break;
1284
1285 next:
1286 triplet++;
1287 country_ie_len -= 3;
1288 }
1289
a5fee9cb 1290 if (have_chan_pwr && pwr_constr_elem)
24a4e400 1291 *pwr_reduction = *pwr_constr_elem;
a5fee9cb
MB		 1292 else
1293 *pwr_reduction = 0;
1294
24a4e400
SG		 1295 return have_chan_pwr;
1296}
1297
c8d65917
SG		 1298static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata,
1299 struct ieee80211_channel *channel,
1300 const u8 *cisco_dtpc_ie,
1301 int *pwr_level)
1302{
1303 /* From practical testing, the first data byte of the DTPC element
1304 * seems to contain the requested dBm level, and the CLI on Cisco
1305 * APs clearly state the range is -127 to 127 dBm, which indicates
1306 * a signed byte, although it seemingly never actually goes negative.
1307 * The other byte seems to always be zero.
1308 */
1309 *pwr_level = (__s8)cisco_dtpc_ie[4];
1310}
1311
24a4e400
SG		 1312static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1313 struct ieee80211_channel *channel,
1314 struct ieee80211_mgmt *mgmt,
1315 const u8 *country_ie, u8 country_ie_len,
c8d65917
SG		 1316 const u8 *pwr_constr_ie,
1317 const u8 *cisco_dtpc_ie)
24a4e400 1318{
c8d65917
SG		 1319 bool has_80211h_pwr = false, has_cisco_pwr = false;
1320 int chan_pwr = 0, pwr_reduction_80211h = 0;
1321 int pwr_level_cisco, pwr_level_80211h;
24a4e400 1322 int new_ap_level;
a5fee9cb 1323 __le16 capab = mgmt->u.probe_resp.capab_info;
04b7b2ff 1324
a5fee9cb
MB		 1325 if (country_ie &&
1326 (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
1327 capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
24a4e400
SG		 1328 has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
1329 sdata, channel, country_ie, country_ie_len,
1330 pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);
c8d65917
SG		 1331 pwr_level_80211h =
1332 max_t(int, 0, chan_pwr - pwr_reduction_80211h);
1333 }
1334
1335 if (cisco_dtpc_ie) {
1336 ieee80211_find_cisco_dtpc(
1337 sdata, channel, cisco_dtpc_ie, &pwr_level_cisco);
1338 has_cisco_pwr = true;
24a4e400 1339 }
04b7b2ff 1340
c8d65917 1341 if (!has_80211h_pwr && !has_cisco_pwr)
1ea6f9c0 1342 return 0;
04b7b2ff 1343
c8d65917
SG		 1344 /* If we have both 802.11h and Cisco DTPC, apply both limits
1345 * by picking the smallest of the two power levels advertised.
1346 */
1347 if (has_80211h_pwr &&
1348 (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) {
a87da0cb
JB		 1349 new_ap_level = pwr_level_80211h;
1350
1351 if (sdata->ap_power_level == new_ap_level)
1352 return 0;
1353
cef2fc1c
JL		 1354 sdata_dbg(sdata,
1355 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1356 pwr_level_80211h, chan_pwr, pwr_reduction_80211h,
1357 sdata->u.mgd.bssid);
c8d65917 1358 } else { /* has_cisco_pwr is always true here. */
a87da0cb
JB		 1359 new_ap_level = pwr_level_cisco;
1360
1361 if (sdata->ap_power_level == new_ap_level)
1362 return 0;
1363
cef2fc1c
JL		 1364 sdata_dbg(sdata,
1365 "Limiting TX power to %d dBm as advertised by %pM\n",
1366 pwr_level_cisco, sdata->u.mgd.bssid);
c8d65917 1367 }
04b7b2ff 1368
1ea6f9c0
JB		 1369 sdata->ap_power_level = new_ap_level;
1370 if (__ieee80211_recalc_txpower(sdata))
1371 return BSS_CHANGED_TXPOWER;
1372 return 0;
cc32abd4
JB		 1373}
1374
965bedad
JB		 1375/* powersave */
1376static void ieee80211_enable_ps(struct ieee80211_local *local,
1377 struct ieee80211_sub_if_data *sdata)
1378{
1379 struct ieee80211_conf *conf = &local->hw.conf;
1380
d5edaedc
JB		 1381 /*
1382 * If we are scanning right now then the parameters will
1383 * take effect when scan finishes.
1384 */
fbe9c429 1385 if (local->scanning)
d5edaedc
JB		 1386 return;
1387
965bedad 1388 if (conf->dynamic_ps_timeout > 0 &&
30686bf7 1389 !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) {
965bedad
JB		 1390 mod_timer(&local->dynamic_ps_timer, jiffies +
1391 msecs_to_jiffies(conf->dynamic_ps_timeout));
1392 } else {
30686bf7 1393 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK))
076cdcb1 1394 ieee80211_send_nullfunc(local, sdata, true);
375177bf 1395
30686bf7
JB		 1396 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
1397 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
2a13052f
JO		 1398 return;
1399
1400 conf->flags |= IEEE80211_CONF_PS;
1401 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1402 }
1403}
1404
1405static void ieee80211_change_ps(struct ieee80211_local *local)
1406{
1407 struct ieee80211_conf *conf = &local->hw.conf;
1408
1409 if (local->ps_sdata) {
965bedad
JB		 1410 ieee80211_enable_ps(local, local->ps_sdata);
1411 } else if (conf->flags & IEEE80211_CONF_PS) {
1412 conf->flags &= ~IEEE80211_CONF_PS;
1413 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1414 del_timer_sync(&local->dynamic_ps_timer);
1415 cancel_work_sync(&local->dynamic_ps_enable_work);
1416 }
1417}
1418
808118cb
JY		 1419static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1420{
1421 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1422 struct sta_info *sta = NULL;
c2c98fde 1423 bool authorized = false;
808118cb
JY		 1424
1425 if (!mgd->powersave)
1426 return false;
1427
05cb9108
JB		 1428 if (mgd->broken_ap)
1429 return false;
1430
808118cb
JY		 1431 if (!mgd->associated)
1432 return false;
1433
392b9ffb 1434 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1435 return false;
1436
989c6505 1437 if (!mgd->have_beacon)
ce857888
AB		 1438 return false;
1439
808118cb
JY		 1440 rcu_read_lock();
1441 sta = sta_info_get(sdata, mgd->bssid);
1442 if (sta)
c2c98fde 1443 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1444 rcu_read_unlock();
1445
c2c98fde 1446 return authorized;
808118cb
JY		 1447}
1448
965bedad 1449/* need to hold RTNL or interface lock */
4a733ef1 1450void ieee80211_recalc_ps(struct ieee80211_local *local)
965bedad
JB		 1451{
1452 struct ieee80211_sub_if_data *sdata, *found = NULL;
1453 int count = 0;
195e294d 1454 int timeout;
965bedad 1455
30686bf7 1456 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) {
965bedad
JB		 1457 local->ps_sdata = NULL;
1458 return;
1459 }
1460
1461 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1462 if (!ieee80211_sdata_running(sdata))
965bedad 1463 continue;
8c7914de
RM		 1464 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1465 /* If an AP vif is found, then disable PS
1466 * by setting the count to zero thereby setting
1467 * ps_sdata to NULL.
1468 */
1469 count = 0;
1470 break;
1471 }
965bedad
JB		 1472 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1473 continue;
1474 found = sdata;
1475 count++;
1476 }
1477
808118cb 1478 if (count == 1 && ieee80211_powersave_allowed(found)) {
4a733ef1 1479 u8 dtimper = found->u.mgd.dtim_period;
10f644a4
JB		 1480 s32 beaconint_us;
1481
10f644a4
JB		 1482 beaconint_us = ieee80211_tu_to_usec(
1483 found->vif.bss_conf.beacon_int);
1484
ff616381 1485 timeout = local->dynamic_ps_forced_timeout;
4a733ef1
JB		 1486 if (timeout < 0)
1487 timeout = 100;
09b85568 1488 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1489
4a733ef1
JB		 1490 /* If the TIM IE is invalid, pretend the value is 1 */
1491 if (!dtimper)
1492 dtimper = 1;
1493
1494 local->hw.conf.ps_dtim_period = dtimper;
1495 local->ps_sdata = found;
10f644a4 1496 } else {
965bedad 1497 local->ps_sdata = NULL;
10f644a4 1498 }
965bedad
JB		 1499
1500 ieee80211_change_ps(local);
1501}
1502
ab095877
EP		 1503void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1504{
1505 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1506
1507 if (sdata->vif.bss_conf.ps != ps_allowed) {
1508 sdata->vif.bss_conf.ps = ps_allowed;
1509 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1510 }
1511}
1512
965bedad
JB		 1513void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1514{
1515 struct ieee80211_local *local =
1516 container_of(work, struct ieee80211_local,
1517 dynamic_ps_disable_work);
1518
1519 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1520 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1521 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1522 }
1523
1524 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1525 IEEE80211_MAX_QUEUE_MAP,
cca07b00
LC		 1526 IEEE80211_QUEUE_STOP_REASON_PS,
1527 false);
965bedad
JB		 1528}
1529
1530void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1531{
1532 struct ieee80211_local *local =
1533 container_of(work, struct ieee80211_local,
1534 dynamic_ps_enable_work);
1535 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1536 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1537 unsigned long flags;
1538 int q;
965bedad
JB		 1539
1540 /* can only happen when PS was just disabled anyway */
1541 if (!sdata)
1542 return;
1543
5e34069c
CL		 1544 ifmgd = &sdata->u.mgd;
1545
965bedad
JB		 1546 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1547 return;
1548
09b85568 1549 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1550 /* don't enter PS if TX frames are pending */
1551 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1552 mod_timer(&local->dynamic_ps_timer, jiffies +
1553 msecs_to_jiffies(
1554 local->hw.conf.dynamic_ps_timeout));
1555 return;
1556 }
77b7023a
AN		 1557
1558 /*
1559 * transmission can be stopped by others which leads to
1560 * dynamic_ps_timer expiry. Postpone the ps timer if it
1561 * is not the actual idle state.
1562 */
1563 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1564 for (q = 0; q < local->hw.queues; q++) {
1565 if (local->queue_stop_reasons[q]) {
1566 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1567 flags);
1568 mod_timer(&local->dynamic_ps_timer, jiffies +
1569 msecs_to_jiffies(
1570 local->hw.conf.dynamic_ps_timeout));
1571 return;
1572 }
1573 }
1574 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1575 }
1ddc2867 1576
30686bf7 1577 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
9c38a8b4 1578 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1579 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1580 mod_timer(&local->dynamic_ps_timer, jiffies +
1581 msecs_to_jiffies(
1582 local->hw.conf.dynamic_ps_timeout));
a1598383 1583 } else {
076cdcb1 1584 ieee80211_send_nullfunc(local, sdata, true);
e8306f98 1585 /* Flush to get the tx status of nullfunc frame */
3b24f4c6 1586 ieee80211_flush_queues(local, sdata, false);
e8306f98 1587 }
f3e85b9e
VN		 1588 }
1589
30686bf7
JB		 1590 if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
1591 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) ||
375177bf
VN		 1592 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1593 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1594 local->hw.conf.flags |= IEEE80211_CONF_PS;
1595 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1596 }
965bedad
JB		 1597}
1598
1599void ieee80211_dynamic_ps_timer(unsigned long data)
1600{
1601 struct ieee80211_local *local = (void *) data;
1602
42935eca 1603 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1604}
1605
164eb02d
SW		 1606void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1607{
a85a7e28 1608 struct delayed_work *delayed_work = to_delayed_work(work);
164eb02d
SW		 1609 struct ieee80211_sub_if_data *sdata =
1610 container_of(delayed_work, struct ieee80211_sub_if_data,
1611 dfs_cac_timer_work);
d2859df5 1612 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1613
34a3740d
JB		 1614 mutex_lock(&sdata->local->mtx);
1615 if (sdata->wdev.cac_started) {
1616 ieee80211_vif_release_channel(sdata);
1617 cfg80211_cac_event(sdata->dev, &chandef,
1618 NL80211_RADAR_CAC_FINISHED,
1619 GFP_KERNEL);
1620 }
1621 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1622}
1623
02219b3a
JB		 1624static bool
1625__ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1626{
1627 struct ieee80211_local *local = sdata->local;
1628 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
cc72f6e2 1629 bool ret = false;
02219b3a
JB		 1630 int ac;
1631
1632 if (local->hw.queues < IEEE80211_NUM_ACS)
1633 return false;
1634
1635 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1636 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
1637 int non_acm_ac;
1638 unsigned long now = jiffies;
1639
1640 if (tx_tspec->action == TX_TSPEC_ACTION_NONE &&
1641 tx_tspec->admitted_time &&
1642 time_after(now, tx_tspec->time_slice_start + HZ)) {
1643 tx_tspec->consumed_tx_time = 0;
1644 tx_tspec->time_slice_start = now;
1645
1646 if (tx_tspec->downgraded)
1647 tx_tspec->action =
1648 TX_TSPEC_ACTION_STOP_DOWNGRADE;
1649 }
1650
1651 switch (tx_tspec->action) {
1652 case TX_TSPEC_ACTION_STOP_DOWNGRADE:
1653 /* take the original parameters */
1654 if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac]))
1655 sdata_err(sdata,
1656 "failed to set TX queue parameters for queue %d\n",
1657 ac);
1658 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1659 tx_tspec->downgraded = false;
1660 ret = true;
1661 break;
1662 case TX_TSPEC_ACTION_DOWNGRADE:
1663 if (time_after(now, tx_tspec->time_slice_start + HZ)) {
1664 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1665 ret = true;
1666 break;
1667 }
1668 /* downgrade next lower non-ACM AC */
1669 for (non_acm_ac = ac + 1;
1670 non_acm_ac < IEEE80211_NUM_ACS;
1671 non_acm_ac++)
1672 if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac)))
1673 break;
1674 /* The loop will result in using BK even if it requires
1675 * admission control, such configuration makes no sense
1676 * and we have to transmit somehow - the AC selection
1677 * does the same thing.
1678 */
1679 if (drv_conf_tx(local, sdata, ac,
1680 &sdata->tx_conf[non_acm_ac]))
1681 sdata_err(sdata,
1682 "failed to set TX queue parameters for queue %d\n",
1683 ac);
1684 tx_tspec->action = TX_TSPEC_ACTION_NONE;
1685 ret = true;
1686 schedule_delayed_work(&ifmgd->tx_tspec_wk,
1687 tx_tspec->time_slice_start + HZ - now + 1);
1688 break;
1689 case TX_TSPEC_ACTION_NONE:
1690 /* nothing now */
1691 break;
1692 }
1693 }
1694
1695 return ret;
1696}
1697
1698void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata)
1699{
1700 if (__ieee80211_sta_handle_tspec_ac_params(sdata))
1701 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1702}
1703
1704static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work)
1705{
1706 struct ieee80211_sub_if_data *sdata;
1707
1708 sdata = container_of(work, struct ieee80211_sub_if_data,
1709 u.mgd.tx_tspec_wk.work);
1710 ieee80211_sta_handle_tspec_ac_params(sdata);
1711}
1712
60f8b39c 1713/* MLME */
7d25745d 1714static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1715 struct ieee80211_sub_if_data *sdata,
4a3cb702 1716 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1717{
2ed77ea6 1718 struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS];
4ced3f74 1719 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82 1720 size_t left;
2ed77ea6 1721 int count, ac;
4a3cb702
JB		 1722 const u8 *pos;
1723 u8 uapsd_queues = 0;
f0706e82 1724
e1b3ec1a 1725 if (!local->ops->conf_tx)
7d25745d 1726 return false;
e1b3ec1a 1727
32c5057b 1728 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1729 return false;
3434fbd3
JB		 1730
1731 if (!wmm_param)
7d25745d 1732 return false;
3434fbd3 1733
f0706e82 1734 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1735 return false;
ab13315a
KV		 1736
1737 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1738 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1739
f0706e82 1740 count = wmm_param[6] & 0x0f;
46900298 1741 if (count == ifmgd->wmm_last_param_set)
7d25745d 1742 return false;
46900298 1743 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1744
1745 pos = wmm_param + 8;
1746 left = wmm_param_len - 8;
1747
1748 memset(&params, 0, sizeof(params));
1749
00e96dec 1750 sdata->wmm_acm = 0;
f0706e82
JB		 1751 for (; left >= 4; left -= 4, pos += 4) {
1752 int aci = (pos[0] >> 5) & 0x03;
1753 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1754 bool uapsd = false;
f0706e82
JB		 1755
1756 switch (aci) {
0eeb59fe 1757 case 1: /* AC_BK */
2ed77ea6 1758 ac = IEEE80211_AC_BK;
988c0f72 1759 if (acm)
00e96dec 1760 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1761 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1762 uapsd = true;
f0706e82 1763 break;
0eeb59fe 1764 case 2: /* AC_VI */
2ed77ea6 1765 ac = IEEE80211_AC_VI;
988c0f72 1766 if (acm)
00e96dec 1767 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1768 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1769 uapsd = true;
f0706e82 1770 break;
0eeb59fe 1771 case 3: /* AC_VO */
2ed77ea6 1772 ac = IEEE80211_AC_VO;
988c0f72 1773 if (acm)
00e96dec 1774 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1775 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1776 uapsd = true;
f0706e82 1777 break;
0eeb59fe 1778 case 0: /* AC_BE */
f0706e82 1779 default:
2ed77ea6 1780 ac = IEEE80211_AC_BE;
988c0f72 1781 if (acm)
00e96dec 1782 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1783 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1784 uapsd = true;
f0706e82
JB		 1785 break;
1786 }
1787
2ed77ea6 1788 params[ac].aifs = pos[0] & 0x0f;
730a7550 1789
2ed77ea6 1790 if (params[ac].aifs < 2) {
730a7550
EG		 1791 sdata_info(sdata,
1792 "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n",
2ed77ea6
JB		 1793 params[ac].aifs, aci);
1794 params[ac].aifs = 2;
730a7550 1795 }
2ed77ea6
JB		 1796 params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1797 params[ac].cw_min = ecw2cw(pos[1] & 0x0f);
1798 params[ac].txop = get_unaligned_le16(pos + 2);
1799 params[ac].acm = acm;
1800 params[ac].uapsd = uapsd;
ab13315a 1801
2ed77ea6
JB		 1802 if (params[ac].cw_min > params[ac].cw_max) {
1803 sdata_info(sdata,
1804 "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n",
1805 params[ac].cw_min, params[ac].cw_max, aci);
1806 return false;
1807 }
1808 }
1809
1810 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
bdcbd8e0 1811 mlme_dbg(sdata,
2ed77ea6
JB		 1812 "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n",
1813 ac, params[ac].acm,
1814 params[ac].aifs, params[ac].cw_min, params[ac].cw_max,
1815 params[ac].txop, params[ac].uapsd,
1816 ifmgd->tx_tspec[ac].downgraded);
1817 sdata->tx_conf[ac] = params[ac];
1818 if (!ifmgd->tx_tspec[ac].downgraded &&
1819 drv_conf_tx(local, sdata, ac, &params[ac]))
bdcbd8e0 1820 sdata_err(sdata,
2ed77ea6
JB		 1821 "failed to set TX queue parameters for AC %d\n",
1822 ac);
f0706e82 1823 }
e1b3ec1a
SG		 1824
1825 /* enable WMM or activate new settings */
4ced3f74 1826 sdata->vif.bss_conf.qos = true;
7d25745d 1827 return true;
f0706e82
JB		 1828}
1829
925e64c3
SG		 1830static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1831{
1832 lockdep_assert_held(&sdata->local->mtx);
1833
392b9ffb 1834 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1835 ieee80211_run_deferred_scan(sdata->local);
1836}
1837
1838static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1839{
1840 mutex_lock(&sdata->local->mtx);
1841 __ieee80211_stop_poll(sdata);
1842 mutex_unlock(&sdata->local->mtx);
1843}
1844
7a5158ef
JB		 1845static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1846 u16 capab, bool erp_valid, u8 erp)
5628221c 1847{
bda3933a 1848 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1849 u32 changed = 0;
7a5158ef
JB		 1850 bool use_protection;
1851 bool use_short_preamble;
1852 bool use_short_slot;
1853
1854 if (erp_valid) {
1855 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1856 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1857 } else {
1858 use_protection = false;
1859 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1860 }
1861
1862 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1863 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1864 use_short_slot = true;
5628221c 1865
471b3efd 1866 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1867 bss_conf->use_cts_prot = use_protection;
1868 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1869 }
7e9ed188 1870
d43c7b37 1871 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1872 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1873 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1874 }
d9430a32 1875
7a5158ef 1876 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1877 bss_conf->use_short_slot = use_short_slot;
1878 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1879 }
1880
1881 return changed;
1882}
1883
f698d856 1884static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1885 struct cfg80211_bss *cbss,
ae5eb026 1886 u32 bss_info_changed)
f0706e82 1887{
0c1ad2ca 1888 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1889 struct ieee80211_local *local = sdata->local;
68542962 1890 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1891
ae5eb026 1892 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1893 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1894 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1895
7ccc8bd7 1896 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1897 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1898
0c1ad2ca
JB		 1899 sdata->u.mgd.associated = cbss;
1900 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1901
17e4ec14
JM		 1902 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1903
b115b972
JD		 1904 if (sdata->vif.p2p ||
1905 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
9caf0364 1906 const struct cfg80211_bss_ies *ies;
488dd7b5 1907
9caf0364
JB		 1908 rcu_read_lock();
1909 ies = rcu_dereference(cbss->ies);
1910 if (ies) {
9caf0364
JB		 1911 int ret;
1912
1913 ret = cfg80211_get_p2p_attr(
1914 ies->data, ies->len,
1915 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1916 (u8 *) &bss_conf->p2p_noa_attr,
1917 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1918 if (ret >= 2) {
67baf663
JD		 1919 sdata->u.mgd.p2p_noa_index =
1920 bss_conf->p2p_noa_attr.index;
9caf0364 1921 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1922 }
488dd7b5 1923 }
9caf0364 1924 rcu_read_unlock();
488dd7b5
JB		 1925 }
1926
b291ba11 1927 /* just to be sure */
925e64c3 1928 ieee80211_stop_poll(sdata);
b291ba11 1929
9ac19a90 1930 ieee80211_led_assoc(local, 1);
9306102e 1931
989c6505 1932 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1933 /*
1934 * If the AP is buggy we may get here with no DTIM period
1935 * known, so assume it's 1 which is the only safe assumption
1936 * in that case, although if the TIM IE is broken powersave
1937 * probably just won't work at all.
1938 */
1939 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1940 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1941 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1942 } else {
817cee76 1943 bss_conf->beacon_rate = NULL;
e5b900d2 1944 bss_conf->dtim_period = 0;
826262c3 1945 }
e5b900d2 1946
68542962 1947 bss_conf->assoc = 1;
9cef8737 1948
a97c13c3 1949 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1950 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1951 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1952 bss_info_changed |= BSS_CHANGED_CQM;
1953
68542962 1954 /* Enable ARP filtering */
0f19b41e 1955 if (bss_conf->arp_addr_cnt)
68542962 1956 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1957
ae5eb026 1958 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1959
056508dc 1960 mutex_lock(&local->iflist_mtx);
4a733ef1 1961 ieee80211_recalc_ps(local);
056508dc 1962 mutex_unlock(&local->iflist_mtx);
e0cb686f 1963
04ecd257 1964 ieee80211_recalc_smps(sdata);
ab095877
EP		 1965 ieee80211_recalc_ps_vif(sdata);
1966
9ac19a90 1967 netif_carrier_on(sdata->dev);
f0706e82
JB		 1968}
1969
e69e95db 1970static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1971 u16 stype, u16 reason, bool tx,
1972 u8 *frame_buf)
aa458d17 1973{
46900298 1974 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1975 struct ieee80211_local *local = sdata->local;
3cc5240b 1976 u32 changed = 0;
aa458d17 1977
8d61ffa5 1978 sdata_assert_lock(sdata);
77fdaa12 1979
37ad3888
JB		 1980 if (WARN_ON_ONCE(tx && !frame_buf))
1981 return;
1982
b291ba11
JB		 1983 if (WARN_ON(!ifmgd->associated))
1984 return;
1985
79543d8e
DS		 1986 ieee80211_stop_poll(sdata);
1987
77fdaa12 1988 ifmgd->associated = NULL;
aa458d17
TW		 1989 netif_carrier_off(sdata->dev);
1990
88bc40e8
EP		 1991 /*
1992 * if we want to get out of ps before disassoc (why?) we have
1993 * to do it before sending disassoc, as otherwise the null-packet
1994 * won't be valid.
1995 */
1996 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1997 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1998 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1999 }
2000 local->ps_sdata = NULL;
2001
ab095877
EP		 2002 /* disable per-vif ps */
2003 ieee80211_recalc_ps_vif(sdata);
2004
14f2ae83
EG		 2005 /* make sure ongoing transmission finishes */
2006 synchronize_net();
2007
3b24f4c6
EG		 2008 /*
2009 * drop any frame before deauth/disassoc, this can be data or
2010 * management frame. Since we are disconnecting, we should not
2011 * insist sending these frames which can take time and delay
2012 * the disconnection and possible the roaming.
2013 */
f823981e 2014 if (tx)
3b24f4c6 2015 ieee80211_flush_queues(local, sdata, true);
f823981e 2016
37ad3888
JB		 2017 /* deauthenticate/disassociate now */
2018 if (tx || frame_buf)
88a9e31c
EP		 2019 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
2020 reason, tx, frame_buf);
37ad3888 2021
3b24f4c6 2022 /* flush out frame - make sure the deauth was actually sent */
37ad3888 2023 if (tx)
3b24f4c6 2024 ieee80211_flush_queues(local, sdata, false);
37ad3888 2025
88a9e31c 2026 /* clear bssid only after building the needed mgmt frames */
c84a67a2 2027 eth_zero_addr(ifmgd->bssid);
88a9e31c 2028
37ad3888 2029 /* remove AP and TDLS peers */
d34ba216 2030 sta_info_flush(sdata);
37ad3888
JB		 2031
2032 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 2033 changed |= ieee80211_reset_erp_info(sdata);
2034
f5e5bf25 2035 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 2036 changed |= BSS_CHANGED_ASSOC;
2037 sdata->vif.bss_conf.assoc = false;
f5e5bf25 2038
67baf663
JD		 2039 ifmgd->p2p_noa_index = -1;
2040 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
2041 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 2042
dd5ecfea 2043 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 2044 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
2045 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 2046 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
2047 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
23a1f8d4
SS		 2048
2049 /* reset MU-MIMO ownership and group data */
2050 memset(sdata->vif.bss_conf.mu_group.membership, 0,
2051 sizeof(sdata->vif.bss_conf.mu_group.membership));
2052 memset(sdata->vif.bss_conf.mu_group.position, 0,
2053 sizeof(sdata->vif.bss_conf.mu_group.position));
2054 changed |= BSS_CHANGED_MU_GROUPS;
322cd406 2055 sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER;
413ad50a 2056
1ea6f9c0 2057 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 2058
520eb820
KV		 2059 del_timer_sync(&local->dynamic_ps_timer);
2060 cancel_work_sync(&local->dynamic_ps_enable_work);
2061
68542962 2062 /* Disable ARP filtering */
0f19b41e 2063 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 2064 changed |= BSS_CHANGED_ARP_FILTER;
68542962 2065
3abead59
JB		 2066 sdata->vif.bss_conf.qos = false;
2067 changed |= BSS_CHANGED_QOS;
2068
0aaffa9b
JB		 2069 /* The BSSID (not really interesting) and HT changed */
2070 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 2071 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 2072
3abead59 2073 /* disassociated - set to defaults now */
cec66283 2074 ieee80211_set_wmm_default(sdata, false, false);
3abead59 2075
b9dcf712
JB		 2076 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
2077 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
2078 del_timer_sync(&sdata->u.mgd.timer);
2079 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 2080
826262c3 2081 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 2082 sdata->vif.bss_conf.beacon_rate = NULL;
2083
989c6505 2084 ifmgd->have_beacon = false;
826262c3 2085
028e8da0 2086 ifmgd->flags = 0;
34a3740d 2087 mutex_lock(&local->mtx);
028e8da0 2088 ieee80211_vif_release_channel(sdata);
59af6928
MK		 2089
2090 sdata->vif.csa_active = false;
0c21e632 2091 ifmgd->csa_waiting_bcn = false;
f84eaa10 2092 ifmgd->csa_ignored_same_chan = 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);
4a733ef1 2136 ieee80211_recalc_ps(local);
133d40f9 2137 mutex_unlock(&local->iflist_mtx);
4e5ff376 2138
30686bf7 2139 if (ieee80211_hw_check(&sdata->local->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
30686bf7 2237 if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) {
04ac3c0e 2238 ifmgd->nullfunc_failed = false;
076cdcb1 2239 ieee80211_send_nullfunc(sdata->local, sdata, false);
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
a73f8e21 2250 ieee80211_send_probe_req(sdata, sdata->vif.addr, dst,
a344d677 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 2311 mutex_lock(&sdata->local->iflist_mtx);
4a733ef1 2312 ieee80211_recalc_ps(sdata->local);
4e751843
JB		 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
a90faa9d
EG		 2362static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata,
2363 const u8 *buf, size_t len, bool tx,
2364 u16 reason)
2365{
2366 struct ieee80211_event event = {
2367 .type = MLME_EVENT,
2368 .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT,
2369 .u.mlme.reason = reason,
2370 };
2371
2372 if (tx)
2373 cfg80211_tx_mlme_mgmt(sdata->dev, buf, len);
2374 else
2375 cfg80211_rx_mlme_mgmt(sdata->dev, buf, len);
2376
2377 drv_event_callback(sdata->local, sdata, &event);
2378}
2379
eef9e54c 2380static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01 2381{
59af6928 2382 struct ieee80211_local *local = sdata->local;
1e4dcd01 2383 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2384 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2385
8d61ffa5 2386 sdata_lock(sdata);
1e4dcd01 2387 if (!ifmgd->associated) {
8d61ffa5 2388 sdata_unlock(sdata);
1e4dcd01
JO		 2389 return;
2390 }
2391
37ad3888
JB		 2392 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2393 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2394 true, frame_buf);
59af6928 2395 mutex_lock(&local->mtx);
7578d575 2396 sdata->vif.csa_active = false;
0c21e632 2397 ifmgd->csa_waiting_bcn = false;
a46992b4
LC		 2398 if (sdata->csa_block_tx) {
2399 ieee80211_wake_vif_queues(local, sdata,
2400 IEEE80211_QUEUE_STOP_REASON_CSA);
2401 sdata->csa_block_tx = false;
2402 }
59af6928 2403 mutex_unlock(&local->mtx);
7da7cc1d 2404
a90faa9d
EG		 2405 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
2406 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
2407
8d61ffa5 2408 sdata_unlock(sdata);
1e4dcd01
JO		 2409}
2410
cc74c0c7 2411static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2412{
2413 struct ieee80211_sub_if_data *sdata =
2414 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2415 u.mgd.beacon_connection_loss_work);
a85e1d55 2416 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
a85e1d55 2417
976bd9ef
JB		 2418 if (ifmgd->associated)
2419 ifmgd->beacon_loss_count++;
b291ba11 2420
682bd38b 2421 if (ifmgd->connection_loss) {
882a7c69
JB		 2422 sdata_info(sdata, "Connection to AP %pM lost\n",
2423 ifmgd->bssid);
eef9e54c 2424 __ieee80211_disconnect(sdata);
882a7c69 2425 } else {
1e4dcd01 2426 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2427 }
2428}
2429
2430static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2431{
2432 struct ieee80211_sub_if_data *sdata =
2433 container_of(work, struct ieee80211_sub_if_data,
2434 u.mgd.csa_connection_drop_work);
2435
eef9e54c 2436 __ieee80211_disconnect(sdata);
b291ba11
JB		 2437}
2438
04de8381
KV		 2439void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2440{
2441 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2442 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2443
b5878a2d
JB		 2444 trace_api_beacon_loss(sdata);
2445
682bd38b 2446 sdata->u.mgd.connection_loss = false;
1e4dcd01 2447 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2448}
2449EXPORT_SYMBOL(ieee80211_beacon_loss);
2450
1e4dcd01
JO		 2451void ieee80211_connection_loss(struct ieee80211_vif *vif)
2452{
2453 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2454 struct ieee80211_hw *hw = &sdata->local->hw;
2455
b5878a2d
JB		 2456 trace_api_connection_loss(sdata);
2457
682bd38b 2458 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2459 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2460}
2461EXPORT_SYMBOL(ieee80211_connection_loss);
2462
2463
66e67e41
JB		 2464static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2465 bool assoc)
2466{
2467 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2468
8d61ffa5 2469 sdata_assert_lock(sdata);
66e67e41 2470
66e67e41 2471 if (!assoc) {
c1e140bf
EG		 2472 /*
2473 * we are not authenticated yet, the only timer that could be
2474 * running is the timeout for the authentication response which
2475 * which is not relevant anymore.
2476 */
2477 del_timer_sync(&sdata->u.mgd.timer);
66e67e41
JB		 2478 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2479
c84a67a2 2480 eth_zero_addr(sdata->u.mgd.bssid);
66e67e41 2481 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2482 sdata->u.mgd.flags = 0;
34a3740d 2483 mutex_lock(&sdata->local->mtx);
55de908a 2484 ieee80211_vif_release_channel(sdata);
34a3740d 2485 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2486 }
2487
5b112d3d 2488 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2489 kfree(auth_data);
2490 sdata->u.mgd.auth_data = NULL;
2491}
2492
c9c99f89
JB		 2493static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2494 bool assoc)
2495{
2496 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2497
2498 sdata_assert_lock(sdata);
2499
2500 if (!assoc) {
2501 /*
2502 * we are not associated yet, the only timer that could be
2503 * running is the timeout for the association response which
2504 * which is not relevant anymore.
2505 */
2506 del_timer_sync(&sdata->u.mgd.timer);
2507 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2508
2509 eth_zero_addr(sdata->u.mgd.bssid);
2510 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
2511 sdata->u.mgd.flags = 0;
322cd406 2512 sdata->flags &= ~IEEE80211_SDATA_MU_MIMO_OWNER;
c9c99f89
JB		 2513 mutex_lock(&sdata->local->mtx);
2514 ieee80211_vif_release_channel(sdata);
2515 mutex_unlock(&sdata->local->mtx);
2516 }
2517
2518 kfree(assoc_data);
2519 sdata->u.mgd.assoc_data = NULL;
2520}
2521
66e67e41
JB		 2522static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2523 struct ieee80211_mgmt *mgmt, size_t len)
2524{
1672c0e3 2525 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2526 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2527 u8 *pos;
2528 struct ieee802_11_elems elems;
1672c0e3 2529 u32 tx_flags = 0;
66e67e41
JB		 2530
2531 pos = mgmt->u.auth.variable;
b2e506bf 2532 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2533 if (!elems.challenge)
2534 return;
2535 auth_data->expected_transaction = 4;
a1845fc7 2536 drv_mgd_prepare_tx(sdata->local, sdata);
30686bf7 2537 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
1672c0e3
JB		 2538 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2539 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2540 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2541 elems.challenge - 2, elems.challenge_len + 2,
2542 auth_data->bss->bssid, auth_data->bss->bssid,
2543 auth_data->key, auth_data->key_len,
1672c0e3 2544 auth_data->key_idx, tx_flags);
66e67e41
JB		 2545}
2546
8d61ffa5
JB		 2547static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2548 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2549{
2550 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2551 u8 bssid[ETH_ALEN];
2552 u16 auth_alg, auth_transaction, status_code;
2553 struct sta_info *sta;
a9409093
EG		 2554 struct ieee80211_event event = {
2555 .type = MLME_EVENT,
2556 .u.mlme.data = AUTH_EVENT,
2557 };
66e67e41 2558
8d61ffa5 2559 sdata_assert_lock(sdata);
66e67e41
JB		 2560
2561 if (len < 24 + 6)
8d61ffa5 2562 return;
66e67e41
JB		 2563
2564 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2565 return;
66e67e41
JB		 2566
2567 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2568
b203ca39 2569 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2570 return;
66e67e41
JB		 2571
2572 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2573 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2574 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2575
2576 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2577 auth_transaction != ifmgd->auth_data->expected_transaction) {
2578 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2579 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2580 auth_transaction,
2581 ifmgd->auth_data->expected_transaction);
8d61ffa5 2582 return;
0f4126e8 2583 }
66e67e41
JB		 2584
2585 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2586 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2587 mgmt->sa, status_code);
dac211ec 2588 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2589 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
a9409093
EG		 2590 event.u.mlme.status = MLME_DENIED;
2591 event.u.mlme.reason = status_code;
2592 drv_event_callback(sdata->local, sdata, &event);
8d61ffa5 2593 return;
66e67e41
JB		 2594 }
2595
2596 switch (ifmgd->auth_data->algorithm) {
2597 case WLAN_AUTH_OPEN:
2598 case WLAN_AUTH_LEAP:
2599 case WLAN_AUTH_FT:
6b8ece3a 2600 case WLAN_AUTH_SAE:
66e67e41
JB		 2601 break;
2602 case WLAN_AUTH_SHARED_KEY:
2603 if (ifmgd->auth_data->expected_transaction != 4) {
2604 ieee80211_auth_challenge(sdata, mgmt, len);
2605 /* need another frame */
8d61ffa5 2606 return;
66e67e41
JB		 2607 }
2608 break;
2609 default:
2610 WARN_ONCE(1, "invalid auth alg %d",
2611 ifmgd->auth_data->algorithm);
8d61ffa5 2612 return;
66e67e41
JB		 2613 }
2614
a9409093
EG		 2615 event.u.mlme.status = MLME_SUCCESS;
2616 drv_event_callback(sdata->local, sdata, &event);
bdcbd8e0 2617 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2618 ifmgd->auth_data->done = true;
2619 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2620 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2621 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2622
6b8ece3a
JM		 2623 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2624 ifmgd->auth_data->expected_transaction != 2) {
2625 /*
2626 * Report auth frame to user space for processing since another
2627 * round of Authentication frames is still needed.
2628 */
6ff57cf8 2629 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2630 return;
6b8ece3a
JM		 2631 }
2632
66e67e41
JB		 2633 /* move station state to auth */
2634 mutex_lock(&sdata->local->sta_mtx);
2635 sta = sta_info_get(sdata, bssid);
2636 if (!sta) {
2637 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2638 goto out_err;
2639 }
2640 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2641 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2642 goto out_err;
2643 }
2644 mutex_unlock(&sdata->local->sta_mtx);
2645
6ff57cf8 2646 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2647 return;
66e67e41
JB		 2648 out_err:
2649 mutex_unlock(&sdata->local->sta_mtx);
2650 /* ignore frame -- wait for timeout */
66e67e41
JB		 2651}
2652
dfa1ad29
CO		 2653#define case_WLAN(type) \
2654 case WLAN_REASON_##type: return #type
2655
2656static const char *ieee80211_get_reason_code_string(u16 reason_code)
2657{
2658 switch (reason_code) {
2659 case_WLAN(UNSPECIFIED);
2660 case_WLAN(PREV_AUTH_NOT_VALID);
2661 case_WLAN(DEAUTH_LEAVING);
2662 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2663 case_WLAN(DISASSOC_AP_BUSY);
2664 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2665 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2666 case_WLAN(DISASSOC_STA_HAS_LEFT);
2667 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2668 case_WLAN(DISASSOC_BAD_POWER);
2669 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2670 case_WLAN(INVALID_IE);
2671 case_WLAN(MIC_FAILURE);
2672 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2673 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2674 case_WLAN(IE_DIFFERENT);
2675 case_WLAN(INVALID_GROUP_CIPHER);
2676 case_WLAN(INVALID_PAIRWISE_CIPHER);
2677 case_WLAN(INVALID_AKMP);
2678 case_WLAN(UNSUPP_RSN_VERSION);
2679 case_WLAN(INVALID_RSN_IE_CAP);
2680 case_WLAN(IEEE8021X_FAILED);
2681 case_WLAN(CIPHER_SUITE_REJECTED);
2682 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2683 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2684 case_WLAN(DISASSOC_LOW_ACK);
2685 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2686 case_WLAN(QSTA_LEAVE_QBSS);
2687 case_WLAN(QSTA_NOT_USE);
2688 case_WLAN(QSTA_REQUIRE_SETUP);
2689 case_WLAN(QSTA_TIMEOUT);
2690 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2691 case_WLAN(MESH_PEER_CANCELED);
2692 case_WLAN(MESH_MAX_PEERS);
2693 case_WLAN(MESH_CONFIG);
2694 case_WLAN(MESH_CLOSE);
2695 case_WLAN(MESH_MAX_RETRIES);
2696 case_WLAN(MESH_CONFIRM_TIMEOUT);
2697 case_WLAN(MESH_INVALID_GTK);
2698 case_WLAN(MESH_INCONSISTENT_PARAM);
2699 case_WLAN(MESH_INVALID_SECURITY);
2700 case_WLAN(MESH_PATH_ERROR);
2701 case_WLAN(MESH_PATH_NOFORWARD);
2702 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2703 case_WLAN(MAC_EXISTS_IN_MBSS);
2704 case_WLAN(MESH_CHAN_REGULATORY);
2705 case_WLAN(MESH_CHAN);
2706 default: return "<unknown>";
2707 }
2708}
66e67e41 2709
8d61ffa5
JB		 2710static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2711 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2712{
46900298 2713 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
c9c99f89 2714 u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
f0706e82 2715
8d61ffa5 2716 sdata_assert_lock(sdata);
66e67e41 2717
f4ea83dd 2718 if (len < 24 + 2)
8d61ffa5 2719 return;
f0706e82 2720
c9c99f89
JB		 2721 if (ifmgd->associated &&
2722 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) {
2723 const u8 *bssid = ifmgd->associated->bssid;
77fdaa12 2724
c9c99f89
JB		 2725 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2726 bssid, reason_code,
2727 ieee80211_get_reason_code_string(reason_code));
f0706e82 2728
c9c99f89 2729 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
f0706e82 2730
c9c99f89
JB		 2731 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false,
2732 reason_code);
2733 return;
2734 }
77fdaa12 2735
c9c99f89
JB		 2736 if (ifmgd->assoc_data &&
2737 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
2738 const u8 *bssid = ifmgd->assoc_data->bss->bssid;
37ad3888 2739
c9c99f89
JB		 2740 sdata_info(sdata,
2741 "deauthenticated from %pM while associating (Reason: %u=%s)\n",
2742 bssid, reason_code,
2743 ieee80211_get_reason_code_string(reason_code));
2744
2745 ieee80211_destroy_assoc_data(sdata, false);
2746
2747 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
2748 return;
2749 }
f0706e82
JB		 2750}
2751
2752
8d61ffa5
JB		 2753static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2754 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2755{
46900298 2756 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2757 u16 reason_code;
2758
8d61ffa5 2759 sdata_assert_lock(sdata);
77fdaa12 2760
66e67e41 2761 if (len < 24 + 2)
8d61ffa5 2762 return;
77fdaa12 2763
66e67e41 2764 if (!ifmgd->associated ||
b203ca39 2765 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2766 return;
f0706e82
JB		 2767
2768 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2769
bdcbd8e0
JB		 2770 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2771 mgmt->sa, reason_code);
f0706e82 2772
37ad3888
JB		 2773 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2774
a90faa9d 2775 ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code);
f0706e82
JB		 2776}
2777
c74d084f
CL		 2778static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2779 u8 *supp_rates, unsigned int supp_rates_len,
2780 u32 *rates, u32 *basic_rates,
2781 bool *have_higher_than_11mbit,
2103dec1
SW		 2782 int *min_rate, int *min_rate_index,
2783 int shift, u32 rate_flags)
c74d084f
CL		 2784{
2785 int i, j;
2786
2787 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2788 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2789 bool is_basic = !!(supp_rates[i] & 0x80);
2790
2103dec1 2791 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2792 *have_higher_than_11mbit = true;
2793
2794 /*
2795 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2796 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2797 *
2798 * Note: Even through the membership selector and the basic
2799 * rate flag share the same bit, they are not exactly
2800 * the same.
2801 */
2802 if (!!(supp_rates[i] & 0x80) &&
2803 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2804 continue;
2805
2806 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2807 struct ieee80211_rate *br;
2808 int brate;
2809
2810 br = &sband->bitrates[j];
2811 if ((rate_flags & br->flags) != rate_flags)
2812 continue;
2813
2814 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2815 if (brate == rate) {
c74d084f
CL		 2816 *rates |= BIT(j);
2817 if (is_basic)
2818 *basic_rates |= BIT(j);
2103dec1
SW		 2819 if ((rate * 5) < *min_rate) {
2820 *min_rate = rate * 5;
c74d084f
CL		 2821 *min_rate_index = j;
2822 }
2823 break;
2824 }
2825 }
2826 }
2827}
f0706e82 2828
66e67e41
JB		 2829static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2830 struct cfg80211_bss *cbss,
af6b6374 2831 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2832{
46900298 2833 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2834 struct ieee80211_local *local = sdata->local;
8318d78a 2835 struct ieee80211_supported_band *sband;
f0706e82 2836 struct sta_info *sta;
af6b6374 2837 u8 *pos;
af6b6374 2838 u16 capab_info, aid;
f0706e82 2839 struct ieee802_11_elems elems;
bda3933a 2840 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2841 const struct cfg80211_bss_ies *bss_ies = NULL;
2842 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2843 u32 changed = 0;
c74d084f 2844 int err;
35d865af 2845 bool ret;
f0706e82 2846
af6b6374 2847 /* AssocResp and ReassocResp have identical structure */
f0706e82 2848
f0706e82 2849 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2850 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2851
1dd84aa2 2852 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2853 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2854 aid);
1dd84aa2
JB		 2855 aid &= ~(BIT(15) | BIT(14));
2856
05cb9108
JB		 2857 ifmgd->broken_ap = false;
2858
2859 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2860 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2861 aid);
05cb9108
JB		 2862 aid = 0;
2863 ifmgd->broken_ap = true;
2864 }
2865
af6b6374 2866 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2867 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2868
f0706e82 2869 if (!elems.supp_rates) {
bdcbd8e0 2870 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2871 return false;
f0706e82
JB		 2872 }
2873
46900298 2874 ifmgd->aid = aid;
9041c1fa
AN		 2875 ifmgd->tdls_chan_switch_prohibited =
2876 elems.ext_capab && elems.ext_capab_len >= 5 &&
2877 (elems.ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED);
f0706e82 2878
35d865af
JB		 2879 /*
2880 * Some APs are erroneously not including some information in their
2881 * (re)association response frames. Try to recover by using the data
2882 * from the beacon or probe response. This seems to afflict mobile
2883 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2884 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2885 */
2886 if ((assoc_data->wmm && !elems.wmm_param) ||
2887 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2888 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2889 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2890 (!elems.vht_cap_elem || !elems.vht_operation))) {
2891 const struct cfg80211_bss_ies *ies;
2892 struct ieee802_11_elems bss_elems;
2893
2894 rcu_read_lock();
2895 ies = rcu_dereference(cbss->ies);
2896 if (ies)
2897 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2898 GFP_ATOMIC);
2899 rcu_read_unlock();
2900 if (!bss_ies)
2901 return false;
2902
2903 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2904 false, &bss_elems);
2905 if (assoc_data->wmm &&
2906 !elems.wmm_param && bss_elems.wmm_param) {
2907 elems.wmm_param = bss_elems.wmm_param;
2908 sdata_info(sdata,
2909 "AP bug: WMM param missing from AssocResp\n");
2910 }
2911
2912 /*
2913 * Also check if we requested HT/VHT, otherwise the AP doesn't
2914 * have to include the IEs in the (re)association response.
2915 */
2916 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2917 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2918 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2919 sdata_info(sdata,
2920 "AP bug: HT capability missing from AssocResp\n");
2921 }
2922 if (!elems.ht_operation && bss_elems.ht_operation &&
2923 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2924 elems.ht_operation = bss_elems.ht_operation;
2925 sdata_info(sdata,
2926 "AP bug: HT operation missing from AssocResp\n");
2927 }
2928 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2929 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2930 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2931 sdata_info(sdata,
2932 "AP bug: VHT capa missing from AssocResp\n");
2933 }
2934 if (!elems.vht_operation && bss_elems.vht_operation &&
2935 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2936 elems.vht_operation = bss_elems.vht_operation;
2937 sdata_info(sdata,
2938 "AP bug: VHT operation missing from AssocResp\n");
2939 }
2940 }
2941
30eb1dc2
JB		 2942 /*
2943 * We previously checked these in the beacon/probe response, so
2944 * they should be present here. This is just a safety net.
2945 */
2946 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2947 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2948 sdata_info(sdata,
35d865af
JB		 2949 "HT AP is missing WMM params or HT capability/operation\n");
2950 ret = false;
2951 goto out;
30eb1dc2
JB		 2952 }
2953
2954 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2955 (!elems.vht_cap_elem || !elems.vht_operation)) {
2956 sdata_info(sdata,
35d865af
JB		 2957 "VHT AP is missing VHT capability/operation\n");
2958 ret = false;
2959 goto out;
30eb1dc2
JB		 2960 }
2961
2a33bee2
GE		 2962 mutex_lock(&sdata->local->sta_mtx);
2963 /*
2964 * station info was already allocated and inserted before
2965 * the association and should be available to us
2966 */
7852e361 2967 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2968 if (WARN_ON(!sta)) {
2969 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2970 ret = false;
2971 goto out;
77fdaa12 2972 }
05e5e883 2973
55de908a 2974 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2975
30eb1dc2 2976 /* Set up internal HT/VHT capabilities */
a8243b72 2977 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2978 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2979 elems.ht_cap_elem, sta);
64f68e5d 2980
818255ea
MP		 2981 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2982 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2983 elems.vht_cap_elem, sta);
818255ea 2984
30eb1dc2
JB		 2985 /*
2986 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2987 * in their association response, so ignore that data for our own
2988 * configuration. If it changed since the last beacon, we'll get the
2989 * next beacon and update then.
2990 */
1128958d 2991
bee7f586
JB		 2992 /*
2993 * If an operating mode notification IE is present, override the
2994 * NSS calculation (that would be done in rate_control_rate_init())
2995 * and use the # of streams from that element.
2996 */
2997 if (elems.opmode_notif &&
2998 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2999 u8 nss;
3000
3001 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
3002 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
3003 nss += 1;
3004 sta->sta.rx_nss = nss;
3005 }
3006
4b7679a5 3007 rate_control_rate_init(sta);
f0706e82 3008
93f0490e 3009 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) {
c2c98fde 3010 set_sta_flag(sta, WLAN_STA_MFP);
93f0490e
T		 3011 sta->sta.mfp = true;
3012 } else {
3013 sta->sta.mfp = false;
3014 }
5394af4d 3015
527871d7 3016 sta->sta.wme = elems.wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
ddf4ac53 3017
3e4d40fa 3018 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 3019 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
3020 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
3021 if (err) {
bdcbd8e0
JB		 3022 sdata_info(sdata,
3023 "failed to move station %pM to desired state\n",
3024 sta->sta.addr);
c8987876
JB		 3025 WARN_ON(__sta_info_destroy(sta));
3026 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 3027 ret = false;
3028 goto out;
c8987876
JB		 3029 }
3030
7852e361 3031 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 3032
f2176d72
JO		 3033 /*
3034 * Always handle WMM once after association regardless
3035 * of the first value the AP uses. Setting -1 here has
3036 * that effect because the AP values is an unsigned
3037 * 4-bit value.
3038 */
3039 ifmgd->wmm_last_param_set = -1;
3040
2ed77ea6 3041 if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
cec66283 3042 ieee80211_set_wmm_default(sdata, false, false);
2ed77ea6
JB		 3043 } else if (!ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
3044 elems.wmm_param_len)) {
3045 /* still enable QoS since we might have HT/VHT */
3046 ieee80211_set_wmm_default(sdata, false, true);
3047 /* set the disable-WMM flag in this case to disable
3048 * tracking WMM parameter changes in the beacon if
3049 * the parameters weren't actually valid. Doing so
3050 * avoids changing parameters very strangely when
3051 * the AP is going back and forth between valid and
3052 * invalid parameters.
3053 */
3054 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
3055 }
3abead59 3056 changed |= BSS_CHANGED_QOS;
f0706e82 3057
60f8b39c
JB		 3058 /* set AID and assoc capability,
3059 * ieee80211_set_associated() will tell the driver */
3060 bss_conf->aid = aid;
3061 bss_conf->assoc_capability = capab_info;
0c1ad2ca 3062 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 3063
d524215f
FF		 3064 /*
3065 * If we're using 4-addr mode, let the AP know that we're
3066 * doing so, so that it can create the STA VLAN on its side
3067 */
3068 if (ifmgd->use_4addr)
3069 ieee80211_send_4addr_nullfunc(local, sdata);
3070
15b7b062 3071 /*
b291ba11
JB		 3072 * Start timer to probe the connection to the AP now.
3073 * Also start the timer that will detect beacon loss.
15b7b062 3074 */
b291ba11 3075 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 3076 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 3077
35d865af
JB		 3078 ret = true;
3079 out:
3080 kfree(bss_ies);
3081 return ret;
f0706e82
JB		 3082}
3083
8d61ffa5
JB		 3084static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
3085 struct ieee80211_mgmt *mgmt,
3086 size_t len)
66e67e41
JB		 3087{
3088 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3089 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
3090 u16 capab_info, status_code, aid;
3091 struct ieee802_11_elems elems;
b0b6aa2c 3092 int ac, uapsd_queues = -1;
66e67e41
JB		 3093 u8 *pos;
3094 bool reassoc;
8d61ffa5 3095 struct cfg80211_bss *bss;
d0d1a12f
EG		 3096 struct ieee80211_event event = {
3097 .type = MLME_EVENT,
3098 .u.mlme.data = ASSOC_EVENT,
3099 };
66e67e41 3100
8d61ffa5 3101 sdata_assert_lock(sdata);
66e67e41
JB		 3102
3103 if (!assoc_data)
8d61ffa5 3104 return;
b203ca39 3105 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 3106 return;
66e67e41
JB		 3107
3108 /*
3109 * AssocResp and ReassocResp have identical structure, so process both
3110 * of them in this function.
3111 */
3112
3113 if (len < 24 + 6)
8d61ffa5 3114 return;
66e67e41
JB		 3115
3116 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
3117 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
3118 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
3119 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
3120
bdcbd8e0
JB		 3121 sdata_info(sdata,
3122 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
3123 reassoc ? "Rea" : "A", mgmt->sa,
3124 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 3125
3126 pos = mgmt->u.assoc_resp.variable;
b2e506bf 3127 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 3128
3129 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 3130 elems.timeout_int &&
3131 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 3132 u32 tu, ms;
79ba1d89 3133 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 3134 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 3135 sdata_info(sdata,
3136 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
3137 mgmt->sa, tu, ms);
66e67e41 3138 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 3139 assoc_data->timeout_started = true;
66e67e41 3140 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 3141 run_again(sdata, assoc_data->timeout);
3142 return;
66e67e41
JB		 3143 }
3144
8d61ffa5 3145 bss = assoc_data->bss;
66e67e41
JB		 3146
3147 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 3148 sdata_info(sdata, "%pM denied association (code=%d)\n",
3149 mgmt->sa, status_code);
66e67e41 3150 ieee80211_destroy_assoc_data(sdata, false);
d0d1a12f
EG		 3151 event.u.mlme.status = MLME_DENIED;
3152 event.u.mlme.reason = status_code;
3153 drv_event_callback(sdata->local, sdata, &event);
66e67e41 3154 } else {
8d61ffa5 3155 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 3156 /* oops -- internal error -- send timeout for now */
10a9109f 3157 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3158 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 3159 return;
66e67e41 3160 }
d0d1a12f
EG		 3161 event.u.mlme.status = MLME_SUCCESS;
3162 drv_event_callback(sdata->local, sdata, &event);
635d999f 3163 sdata_info(sdata, "associated\n");
79ebfb85
JB		 3164
3165 /*
3166 * destroy assoc_data afterwards, as otherwise an idle
3167 * recalc after assoc_data is NULL but before associated
3168 * is set can cause the interface to go idle
3169 */
3170 ieee80211_destroy_assoc_data(sdata, true);
b0b6aa2c
EP		 3171
3172 /* get uapsd queues configuration */
3173 uapsd_queues = 0;
3174 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
3175 if (sdata->tx_conf[ac].uapsd)
3176 uapsd_queues |= BIT(ac);
66e67e41
JB		 3177 }
3178
b0b6aa2c 3179 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues);
66e67e41 3180}
8e3c1b77 3181
98c8fccf 3182static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 3183 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 3184 struct ieee80211_rx_status *rx_status,
d45c4172 3185 struct ieee802_11_elems *elems)
98c8fccf
JB		 3186{
3187 struct ieee80211_local *local = sdata->local;
c2b13452 3188 struct ieee80211_bss *bss;
98c8fccf 3189 struct ieee80211_channel *channel;
56007a02 3190
8d61ffa5 3191 sdata_assert_lock(sdata);
b4f286a1 3192
3afc2167
EG		 3193 channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq);
3194 if (!channel)
98c8fccf
JB		 3195 return;
3196
98c8fccf 3197 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 3198 channel);
817cee76 3199 if (bss) {
817cee76 3200 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 3201 ieee80211_rx_bss_put(local, bss);
817cee76 3202 }
f0706e82
JB		 3203}
3204
3205
f698d856 3206static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 3207 struct sk_buff *skb)
f0706e82 3208{
af6b6374 3209 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 3210 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 3211 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
3212 size_t baselen, len = skb->len;
ae6a44e3
EK		 3213 struct ieee802_11_elems elems;
3214
15b7b062
KV		 3215 ifmgd = &sdata->u.mgd;
3216
8d61ffa5 3217 sdata_assert_lock(sdata);
77fdaa12 3218
b203ca39 3219 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 3220 return; /* ignore ProbeResp to foreign address */
3221
ae6a44e3
EK		 3222 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
3223 if (baselen > len)
3224 return;
3225
3226 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 3227 false, &elems);
ae6a44e3 3228
d45c4172 3229 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 3230
77fdaa12 3231 if (ifmgd->associated &&
b203ca39 3232 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 3233 ieee80211_reset_ap_probe(sdata);
f0706e82
JB		 3234}
3235
d91f36db
JB		 3236/*
3237 * This is the canonical list of information elements we care about,
3238 * the filter code also gives us all changes to the Microsoft OUI
c8d65917
SG		 3239 * (00:50:F2) vendor IE which is used for WMM which we need to track,
3240 * as well as the DTPC IE (part of the Cisco OUI) used for signaling
3241 * changes to requested client power.
d91f36db
JB		 3242 *
3243 * We implement beacon filtering in software since that means we can
3244 * avoid processing the frame here and in cfg80211, and userspace
3245 * will not be able to tell whether the hardware supports it or not.
3246 *
3247 * XXX: This list needs to be dynamic -- userspace needs to be able to
3248 * add items it requires. It also needs to be able to tell us to
3249 * look out for other vendor IEs.
3250 */
3251static const u64 care_about_ies =
1d4df3a5
JB		 3252 (1ULL << WLAN_EID_COUNTRY) |
3253 (1ULL << WLAN_EID_ERP_INFO) |
3254 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
3255 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
3256 (1ULL << WLAN_EID_HT_CAPABILITY) |
70a3fd6c
JB		 3257 (1ULL << WLAN_EID_HT_OPERATION) |
3258 (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN);
d91f36db 3259
8d61ffa5
JB		 3260static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
3261 struct ieee80211_mgmt *mgmt, size_t len,
3262 struct ieee80211_rx_status *rx_status)
f0706e82 3263{
d91f36db 3264 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 3265 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 3266 size_t baselen;
3267 struct ieee802_11_elems elems;
f698d856 3268 struct ieee80211_local *local = sdata->local;
55de908a
JB		 3269 struct ieee80211_chanctx_conf *chanctx_conf;
3270 struct ieee80211_channel *chan;
bee7f586 3271 struct sta_info *sta;
471b3efd 3272 u32 changed = 0;
f87ad637 3273 bool erp_valid;
7a5158ef 3274 u8 erp_value = 0;
d91f36db 3275 u32 ncrc;
77fdaa12 3276 u8 *bssid;
8d61ffa5 3277 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 3278
8d61ffa5 3279 sdata_assert_lock(sdata);
f0706e82 3280
ae6a44e3
EK		 3281 /* Process beacon from the current BSS */
3282 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
3283 if (baselen > len)
8d61ffa5 3284 return;
ae6a44e3 3285
55de908a
JB		 3286 rcu_read_lock();
3287 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3288 if (!chanctx_conf) {
3289 rcu_read_unlock();
8d61ffa5 3290 return;
55de908a
JB		 3291 }
3292
4bf88530 3293 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 3294 rcu_read_unlock();
8d61ffa5 3295 return;
55de908a 3296 }
4bf88530 3297 chan = chanctx_conf->def.chan;
55de908a 3298 rcu_read_unlock();
f0706e82 3299
c65dd147 3300 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 3301 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 3302 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 3303 len - baselen, false, &elems);
77fdaa12 3304
d45c4172 3305 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 3306 if (elems.tim && !elems.parse_error) {
3307 const struct ieee80211_tim_ie *tim_ie = elems.tim;
3308 ifmgd->dtim_period = tim_ie->dtim_period;
3309 }
989c6505 3310 ifmgd->have_beacon = true;
c65dd147 3311 ifmgd->assoc_data->need_beacon = false;
30686bf7 3312 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
ef429dad
JB		 3313 sdata->vif.bss_conf.sync_tsf =
3314 le64_to_cpu(mgmt->u.beacon.timestamp);
3315 sdata->vif.bss_conf.sync_device_ts =
3316 rx_status->device_timestamp;
3317 if (elems.tim)
3318 sdata->vif.bss_conf.sync_dtim_count =
3319 elems.tim->dtim_count;
3320 else
3321 sdata->vif.bss_conf.sync_dtim_count = 0;
3322 }
66e67e41
JB		 3323 /* continue assoc process */
3324 ifmgd->assoc_data->timeout = jiffies;
89afe614 3325 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 3326 run_again(sdata, ifmgd->assoc_data->timeout);
3327 return;
66e67e41 3328 }
77fdaa12 3329
66e67e41 3330 if (!ifmgd->associated ||
b203ca39 3331 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 3332 return;
66e67e41 3333 bssid = ifmgd->associated->bssid;
f0706e82 3334
17e4ec14 3335 /* Track average RSSI from the Beacon frames of the current AP */
17e4ec14
JM		 3336 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
3337 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
338c17ae 3338 ewma_beacon_signal_init(&ifmgd->ave_beacon_signal);
17e4ec14 3339 ifmgd->last_cqm_event_signal = 0;
391a200a 3340 ifmgd->count_beacon_signal = 1;
615f7b9b 3341 ifmgd->last_ave_beacon_signal = 0;
17e4ec14 3342 } else {
391a200a 3343 ifmgd->count_beacon_signal++;
17e4ec14 3344 }
615f7b9b 3345
338c17ae
JB		 3346 ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal);
3347
615f7b9b
MV		 3348 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
3349 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
338c17ae 3350 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
615f7b9b 3351 int last_sig = ifmgd->last_ave_beacon_signal;
a8182929
EG		 3352 struct ieee80211_event event = {
3353 .type = RSSI_EVENT,
3354 };
615f7b9b
MV		 3355
3356 /*
3357 * if signal crosses either of the boundaries, invoke callback
3358 * with appropriate parameters
3359 */
3360 if (sig > ifmgd->rssi_max_thold &&
3361 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
3362 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3363 event.u.rssi.data = RSSI_EVENT_HIGH;
3364 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3365 } else if (sig < ifmgd->rssi_min_thold &&
3366 (last_sig >= ifmgd->rssi_max_thold ||
3367 last_sig == 0)) {
3368 ifmgd->last_ave_beacon_signal = sig;
a8182929
EG		 3369 event.u.rssi.data = RSSI_EVENT_LOW;
3370 drv_event_callback(local, sdata, &event);
615f7b9b
MV		 3371 }
3372 }
3373
17e4ec14 3374 if (bss_conf->cqm_rssi_thold &&
391a200a 3375 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 3376 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
338c17ae 3377 int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal);
17e4ec14
JM		 3378 int last_event = ifmgd->last_cqm_event_signal;
3379 int thold = bss_conf->cqm_rssi_thold;
3380 int hyst = bss_conf->cqm_rssi_hyst;
338c17ae 3381
17e4ec14
JM		 3382 if (sig < thold &&
3383 (last_event == 0 || sig < last_event - hyst)) {
3384 ifmgd->last_cqm_event_signal = sig;
3385 ieee80211_cqm_rssi_notify(
3386 &sdata->vif,
3387 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
3388 GFP_KERNEL);
3389 } else if (sig > thold &&
3390 (last_event == 0 || sig > last_event + hyst)) {
3391 ifmgd->last_cqm_event_signal = sig;
3392 ieee80211_cqm_rssi_notify(
3393 &sdata->vif,
3394 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
3395 GFP_KERNEL);
3396 }
3397 }
3398
392b9ffb 3399 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 3400 mlme_dbg_ratelimited(sdata,
112c31f0 3401 "cancelling AP probe due to a received beacon\n");
392b9ffb 3402 ieee80211_reset_ap_probe(sdata);
92778180
JM		 3403 }
3404
b291ba11
JB		 3405 /*
3406 * Push the beacon loss detection into the future since
3407 * we are processing a beacon from the AP just now.
3408 */
d3a910a8 3409 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 3410
d91f36db
JB		 3411 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
3412 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3413 len - baselen, false, &elems,
d91f36db
JB		 3414 care_about_ies, ncrc);
3415
90d13e8f
JB		 3416 if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
3417 ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid)) {
3418 if (local->hw.conf.dynamic_ps_timeout > 0) {
3419 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3420 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3421 ieee80211_hw_config(local,
3422 IEEE80211_CONF_CHANGE_PS);
572e0012 3423 }
076cdcb1 3424 ieee80211_send_nullfunc(local, sdata, false);
90d13e8f
JB		 3425 } else if (!local->pspolling && sdata->u.mgd.powersave) {
3426 local->pspolling = true;
3427
3428 /*
3429 * Here is assumed that the driver will be
3430 * able to send ps-poll frame and receive a
3431 * response even though power save mode is
3432 * enabled, but some drivers might require
3433 * to disable power save here. This needs
3434 * to be investigated.
3435 */
3436 ieee80211_send_pspoll(local, sdata);
a97b77b9
VN		 3437 }
3438 }
7a5158ef 3439
b115b972
JD		 3440 if (sdata->vif.p2p ||
3441 sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) {
67baf663 3442 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3443 int ret;
3444
3445 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3446 len - baselen,
3447 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3448 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3449 if (ret >= 2) {
3450 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3451 /* valid noa_attr and index changed */
3452 sdata->u.mgd.p2p_noa_index = noa.index;
3453 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3454 changed |= BSS_CHANGED_P2P_PS;
3455 /*
3456 * make sure we update all information, the CRC
3457 * mechanism doesn't look at P2P attributes.
3458 */
3459 ifmgd->beacon_crc_valid = false;
3460 }
3461 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3462 /* noa_attr not found and we had valid noa_attr before */
3463 sdata->u.mgd.p2p_noa_index = -1;
3464 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3465 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3466 ifmgd->beacon_crc_valid = false;
3467 }
3468 }
3469
0c21e632
LC		 3470 if (ifmgd->csa_waiting_bcn)
3471 ieee80211_chswitch_post_beacon(sdata);
3472
2ecc3905
AB		 3473 /*
3474 * Update beacon timing and dtim count on every beacon appearance. This
3475 * will allow the driver to use the most updated values. Do it before
3476 * comparing this one with last received beacon.
3477 * IMPORTANT: These parameters would possibly be out of sync by the time
3478 * the driver will use them. The synchronized view is currently
3479 * guaranteed only in certain callbacks.
3480 */
30686bf7 3481 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
2ecc3905
AB		 3482 sdata->vif.bss_conf.sync_tsf =
3483 le64_to_cpu(mgmt->u.beacon.timestamp);
3484 sdata->vif.bss_conf.sync_device_ts =
3485 rx_status->device_timestamp;
3486 if (elems.tim)
3487 sdata->vif.bss_conf.sync_dtim_count =
3488 elems.tim->dtim_count;
3489 else
3490 sdata->vif.bss_conf.sync_dtim_count = 0;
3491 }
3492
d8ec4433 3493 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3494 return;
30196673 3495 ifmgd->beacon_crc = ncrc;
d8ec4433 3496 ifmgd->beacon_crc_valid = true;
30196673 3497
d45c4172 3498 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3499
d70b7616 3500 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
2ba45384 3501 rx_status->device_timestamp,
d70b7616
JB		 3502 &elems, true);
3503
095d81ce
JB		 3504 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3505 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3506 elems.wmm_param_len))
3507 changed |= BSS_CHANGED_QOS;
3508
c65dd147
EG		 3509 /*
3510 * If we haven't had a beacon before, tell the driver about the
ef429dad 3511 * DTIM period (and beacon timing if desired) now.
c65dd147 3512 */
989c6505 3513 if (!ifmgd->have_beacon) {
c65dd147
EG		 3514 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3515 if (elems.tim)
3516 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3517 else
3518 bss_conf->dtim_period = 1;
ef429dad 3519
989c6505
AB		 3520 changed |= BSS_CHANGED_BEACON_INFO;
3521 ifmgd->have_beacon = true;
482a9c74
AB		 3522
3523 mutex_lock(&local->iflist_mtx);
4a733ef1 3524 ieee80211_recalc_ps(local);
482a9c74
AB		 3525 mutex_unlock(&local->iflist_mtx);
3526
ce857888 3527 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3528 }
3529
1946bed9 3530 if (elems.erp_info) {
7a5158ef
JB		 3531 erp_valid = true;
3532 erp_value = elems.erp_info[0];
3533 } else {
3534 erp_valid = false;
50c4afb9 3535 }
7a5158ef
JB		 3536 changed |= ieee80211_handle_bss_capability(sdata,
3537 le16_to_cpu(mgmt->u.beacon.capab_info),
3538 erp_valid, erp_value);
f0706e82 3539
1128958d 3540 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3541 sta = sta_info_get(sdata, bssid);
3542
53b954ee
EP		 3543 if (ieee80211_config_bw(sdata, sta,
3544 elems.ht_cap_elem, elems.ht_operation,
30eb1dc2
JB		 3545 elems.vht_operation, bssid, &changed)) {
3546 mutex_unlock(&local->sta_mtx);
89f774e6
JB		 3547 sdata_info(sdata,
3548 "failed to follow AP %pM bandwidth change, disconnect\n",
3549 bssid);
30eb1dc2
JB		 3550 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3551 WLAN_REASON_DEAUTH_LEAVING,
3552 true, deauth_buf);
a90faa9d
EG		 3553 ieee80211_report_disconnect(sdata, deauth_buf,
3554 sizeof(deauth_buf), true,
3555 WLAN_REASON_DEAUTH_LEAVING);
8d61ffa5 3556 return;
30eb1dc2 3557 }
bee7f586
JB		 3558
3559 if (sta && elems.opmode_notif)
3560 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
cf1e05c6 3561 rx_status->band);
1128958d 3562 mutex_unlock(&local->sta_mtx);
d3c990fb 3563
24a4e400
SG		 3564 changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt,
3565 elems.country_elem,
3566 elems.country_elem_len,
c8d65917
SG		 3567 elems.pwr_constr_elem,
3568 elems.cisco_dtpc_elem);
3f2355cb 3569
471b3efd 3570 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3571}
3572
1fa57d01
JB		 3573void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3574 struct sk_buff *skb)
f0706e82
JB		 3575{
3576 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3577 struct ieee80211_mgmt *mgmt;
3578 u16 fc;
1b3a2e49
JB		 3579 struct ieee802_11_elems elems;
3580 int ies_len;
f0706e82 3581
f0706e82
JB		 3582 rx_status = (struct ieee80211_rx_status *) skb->cb;
3583 mgmt = (struct ieee80211_mgmt *) skb->data;
3584 fc = le16_to_cpu(mgmt->frame_control);
3585
8d61ffa5 3586 sdata_lock(sdata);
77fdaa12 3587
66e67e41
JB		 3588 switch (fc & IEEE80211_FCTL_STYPE) {
3589 case IEEE80211_STYPE_BEACON:
8d61ffa5 3590 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3591 break;
3592 case IEEE80211_STYPE_PROBE_RESP:
3593 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3594 break;
3595 case IEEE80211_STYPE_AUTH:
8d61ffa5 3596 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3597 break;
3598 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3599 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3600 break;
3601 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3602 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3603 break;
3604 case IEEE80211_STYPE_ASSOC_RESP:
3605 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3606 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3607 break;
3608 case IEEE80211_STYPE_ACTION:
37799e52 3609 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3610 ies_len = skb->len -
3611 offsetof(struct ieee80211_mgmt,
3612 u.action.u.chan_switch.variable);
37799e52
JB		 3613
3614 if (ies_len < 0)
3615 break;
3616
3617 ieee802_11_parse_elems(
3618 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3619 ies_len, true, &elems);
37799e52
JB		 3620
3621 if (elems.parse_error)
3622 break;
3623
1b3a2e49 3624 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3625 rx_status->mactime,
3626 rx_status->device_timestamp,
3627 &elems, false);
1b3a2e49
JB		 3628 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3629 ies_len = skb->len -
3630 offsetof(struct ieee80211_mgmt,
3631 u.action.u.ext_chan_switch.variable);
3632
3633 if (ies_len < 0)
3634 break;
3635
3636 ieee802_11_parse_elems(
3637 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3638 ies_len, true, &elems);
1b3a2e49
JB		 3639
3640 if (elems.parse_error)
3641 break;
3642
3643 /* for the handling code pretend this was also an IE */
3644 elems.ext_chansw_ie =
3645 &mgmt->u.action.u.ext_chan_switch.data;
3646
66e67e41 3647 ieee80211_sta_process_chanswitch(sdata,
2ba45384
LC		 3648 rx_status->mactime,
3649 rx_status->device_timestamp,
3650 &elems, false);
77fdaa12 3651 }
37799e52 3652 break;
77fdaa12 3653 }
8d61ffa5 3654 sdata_unlock(sdata);
f0706e82
JB		 3655}
3656
9c6bd790 3657static void ieee80211_sta_timer(unsigned long data)
f0706e82 3658{
60f8b39c
JB		 3659 struct ieee80211_sub_if_data *sdata =
3660 (struct ieee80211_sub_if_data *) data;
5bb644a0 3661
9b7d72c1 3662 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3663}
3664
04ac3c0e 3665static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3666 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3667{
6ae16775 3668 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3669
37ad3888 3670 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3671 tx, frame_buf);
37ad3888 3672
a90faa9d
EG		 3673 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
3674 reason);
04ac3c0e
FF		 3675}
3676
46cad4b7 3677static int ieee80211_auth(struct ieee80211_sub_if_data *sdata)
66e67e41
JB		 3678{
3679 struct ieee80211_local *local = sdata->local;
3680 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3681 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3682 u32 tx_flags = 0;
46cad4b7
JB		 3683 u16 trans = 1;
3684 u16 status = 0;
66e67e41 3685
8d61ffa5 3686 sdata_assert_lock(sdata);
66e67e41
JB		 3687
3688 if (WARN_ON_ONCE(!auth_data))
3689 return -EINVAL;
3690
66e67e41
JB		 3691 auth_data->tries++;
3692
3693 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3694 sdata_info(sdata, "authentication with %pM timed out\n",
3695 auth_data->bss->bssid);
66e67e41
JB		 3696
3697 /*
3698 * Most likely AP is not in the range so remove the
3699 * bss struct for that AP.
3700 */
3701 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3702
3703 return -ETIMEDOUT;
3704 }
3705
a1845fc7
JB		 3706 drv_mgd_prepare_tx(local, sdata);
3707
46cad4b7
JB		 3708 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3709 auth_data->bss->bssid, auth_data->tries,
3710 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3711
46cad4b7 3712 auth_data->expected_transaction = 2;
6b8ece3a 3713
46cad4b7
JB		 3714 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3715 trans = auth_data->sae_trans;
3716 status = auth_data->sae_status;
3717 auth_data->expected_transaction = trans;
3718 }
66e67e41 3719
46cad4b7
JB		 3720 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
3721 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3722 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41 3723
46cad4b7
JB		 3724 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3725 auth_data->data, auth_data->data_len,
3726 auth_data->bss->bssid,
3727 auth_data->bss->bssid, NULL, 0, 0,
3728 tx_flags);
66e67e41 3729
6211dd12 3730 if (tx_flags == 0) {
1672c0e3 3731 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3732 auth_data->timeout_started = true;
8d61ffa5 3733 run_again(sdata, auth_data->timeout);
89afe614 3734 } else {
cb236d2d
JB		 3735 auth_data->timeout =
3736 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3737 auth_data->timeout_started = true;
3738 run_again(sdata, auth_data->timeout);
1672c0e3 3739 }
66e67e41
JB		 3740
3741 return 0;
3742}
3743
3744static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3745{
3746 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3747 struct ieee80211_local *local = sdata->local;
3748
8d61ffa5 3749 sdata_assert_lock(sdata);
66e67e41 3750
66e67e41
JB		 3751 assoc_data->tries++;
3752 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3753 sdata_info(sdata, "association with %pM timed out\n",
3754 assoc_data->bss->bssid);
66e67e41
JB		 3755
3756 /*
3757 * Most likely AP is not in the range so remove the
3758 * bss struct for that AP.
3759 */
3760 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3761
3762 return -ETIMEDOUT;
3763 }
3764
bdcbd8e0
JB		 3765 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3766 assoc_data->bss->bssid, assoc_data->tries,
3767 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3768 ieee80211_send_assoc(sdata);
3769
30686bf7 3770 if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
1672c0e3 3771 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3772 assoc_data->timeout_started = true;
8d61ffa5 3773 run_again(sdata, assoc_data->timeout);
89afe614 3774 } else {
cb236d2d
JB		 3775 assoc_data->timeout =
3776 round_jiffies_up(jiffies +
3777 IEEE80211_ASSOC_TIMEOUT_LONG);
3778 assoc_data->timeout_started = true;
3779 run_again(sdata, assoc_data->timeout);
1672c0e3 3780 }
66e67e41
JB		 3781
3782 return 0;
3783}
3784
1672c0e3
JB		 3785void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3786 __le16 fc, bool acked)
3787{
3788 struct ieee80211_local *local = sdata->local;
3789
3790 sdata->u.mgd.status_fc = fc;
3791 sdata->u.mgd.status_acked = acked;
3792 sdata->u.mgd.status_received = true;
3793
3794 ieee80211_queue_work(&local->hw, &sdata->work);
3795}
3796
1fa57d01 3797void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3798{
9c6bd790 3799 struct ieee80211_local *local = sdata->local;
1fa57d01 3800 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3801
8d61ffa5 3802 sdata_lock(sdata);
77fdaa12 3803
1672c0e3
JB		 3804 if (ifmgd->status_received) {
3805 __le16 fc = ifmgd->status_fc;
3806 bool status_acked = ifmgd->status_acked;
3807
3808 ifmgd->status_received = false;
46cad4b7 3809 if (ifmgd->auth_data && ieee80211_is_auth(fc)) {
1672c0e3
JB		 3810 if (status_acked) {
3811 ifmgd->auth_data->timeout =
3812 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3813 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3814 } else {
3815 ifmgd->auth_data->timeout = jiffies - 1;
3816 }
89afe614 3817 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3818 } else if (ifmgd->assoc_data &&
3819 (ieee80211_is_assoc_req(fc) ||
3820 ieee80211_is_reassoc_req(fc))) {
3821 if (status_acked) {
3822 ifmgd->assoc_data->timeout =
3823 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3824 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3825 } else {
3826 ifmgd->assoc_data->timeout = jiffies - 1;
3827 }
89afe614 3828 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3829 }
3830 }
3831
89afe614 3832 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3833 time_after(jiffies, ifmgd->auth_data->timeout)) {
3834 if (ifmgd->auth_data->done) {
3835 /*
3836 * ok ... we waited for assoc but userspace didn't,
3837 * so let's just kill the auth data
3838 */
3839 ieee80211_destroy_auth_data(sdata, false);
46cad4b7 3840 } else if (ieee80211_auth(sdata)) {
66e67e41 3841 u8 bssid[ETH_ALEN];
a9409093
EG		 3842 struct ieee80211_event event = {
3843 .type = MLME_EVENT,
3844 .u.mlme.data = AUTH_EVENT,
3845 .u.mlme.status = MLME_TIMEOUT,
3846 };
66e67e41
JB		 3847
3848 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3849
3850 ieee80211_destroy_auth_data(sdata, false);
3851
6ff57cf8 3852 cfg80211_auth_timeout(sdata->dev, bssid);
a9409093 3853 drv_event_callback(sdata->local, sdata, &event);
66e67e41 3854 }
89afe614 3855 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3856 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3857
89afe614 3858 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3859 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3860 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3861 ieee80211_do_assoc(sdata)) {
959867fa 3862 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
d0d1a12f
EG		 3863 struct ieee80211_event event = {
3864 .type = MLME_EVENT,
3865 .u.mlme.data = ASSOC_EVENT,
3866 .u.mlme.status = MLME_TIMEOUT,
3867 };
66e67e41
JB		 3868
3869 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3870 cfg80211_assoc_timeout(sdata->dev, bss);
d0d1a12f 3871 drv_event_callback(sdata->local, sdata, &event);
66e67e41 3872 }
89afe614 3873 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3874 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3875
392b9ffb 3876 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3877 ifmgd->associated) {
a43abf29 3878 u8 bssid[ETH_ALEN];
72a8a3ed 3879 int max_tries;
a43abf29 3880
0c1ad2ca 3881 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3882
30686bf7 3883 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS))
180205bd 3884 max_tries = max_nullfunc_tries;
72a8a3ed 3885 else
180205bd 3886 max_tries = max_probe_tries;
72a8a3ed 3887
4e5ff376
FF		 3888 /* ACK received for nullfunc probing frame */
3889 if (!ifmgd->probe_send_count)
3890 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3891 else if (ifmgd->nullfunc_failed) {
3892 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3893 mlme_dbg(sdata,
3894 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3895 bssid, ifmgd->probe_send_count,
3896 max_tries);
04ac3c0e
FF		 3897 ieee80211_mgd_probe_ap_send(sdata);
3898 } else {
bdcbd8e0
JB		 3899 mlme_dbg(sdata,
3900 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3901 bssid);
95acac61 3902 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3903 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3904 false);
04ac3c0e
FF		 3905 }
3906 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3907 run_again(sdata, ifmgd->probe_timeout);
30686bf7 3908 else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
bdcbd8e0
JB		 3909 mlme_dbg(sdata,
3910 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3911 bssid, probe_wait_ms);
95acac61 3912 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3913 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3914 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3915 mlme_dbg(sdata,
3916 "No probe response from AP %pM after %dms, try %d/%i\n",
3917 bssid, probe_wait_ms,
3918 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3919 ieee80211_mgd_probe_ap_send(sdata);
3920 } else {
b291ba11
JB		 3921 /*
3922 * We actually lost the connection ... or did we?
3923 * Let's make sure!
3924 */
89f774e6
JB		 3925 mlme_dbg(sdata,
3926 "No probe response from AP %pM after %dms, disconnecting.\n",
3927 bssid, probe_wait_ms);
04ac3c0e 3928
95acac61 3929 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3930 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3931 }
3932 }
3933
8d61ffa5 3934 sdata_unlock(sdata);
f0706e82
JB		 3935}
3936
b291ba11
JB		 3937static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3938{
3939 struct ieee80211_sub_if_data *sdata =
3940 (struct ieee80211_sub_if_data *) data;
0c21e632 3941 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 3942
0c21e632 3943 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3944 return;
3945
682bd38b 3946 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3947 ieee80211_queue_work(&sdata->local->hw,
3948 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3949}
3950
3951static void ieee80211_sta_conn_mon_timer(unsigned long data)
3952{
3953 struct ieee80211_sub_if_data *sdata =
3954 (struct ieee80211_sub_if_data *) data;
3955 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3956 struct ieee80211_local *local = sdata->local;
3957
0c21e632 3958 if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn)
e5593f56
MK		 3959 return;
3960
42935eca 3961 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3962}
3963
3964static void ieee80211_sta_monitor_work(struct work_struct *work)
3965{
3966 struct ieee80211_sub_if_data *sdata =
3967 container_of(work, struct ieee80211_sub_if_data,
3968 u.mgd.monitor_work);
3969
3970 ieee80211_mgd_probe_ap(sdata, false);
3971}
3972
9c6bd790
JB		 3973static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3974{
ad935687 3975 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3976 __ieee80211_stop_poll(sdata);
ad935687 3977
b291ba11 3978 /* let's probe the connection once */
30686bf7 3979 if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR))
494f1fe5
EP		 3980 ieee80211_queue_work(&sdata->local->hw,
3981 &sdata->u.mgd.monitor_work);
b291ba11 3982 /* and do all the other regular work too */
64592c8f 3983 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3984 }
9c6bd790 3985}
f0706e82 3986
b8360ab8 3987#ifdef CONFIG_PM
1a1cb744
JB		 3988void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata)
3989{
3990 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3991 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
3992
3993 sdata_lock(sdata);
3994
c52666ae
EG		 3995 if (ifmgd->auth_data || ifmgd->assoc_data) {
3996 const u8 *bssid = ifmgd->auth_data ?
3997 ifmgd->auth_data->bss->bssid :
3998 ifmgd->assoc_data->bss->bssid;
3999
1a1cb744 4000 /*
c52666ae
EG		 4001 * If we are trying to authenticate / associate while suspending,
4002 * cfg80211 won't know and won't actually abort those attempts,
4003 * thus we need to do that ourselves.
1a1cb744 4004 */
c52666ae 4005 ieee80211_send_deauth_disassoc(sdata, bssid,
1a1cb744
JB		 4006 IEEE80211_STYPE_DEAUTH,
4007 WLAN_REASON_DEAUTH_LEAVING,
4008 false, frame_buf);
c52666ae
EG		 4009 if (ifmgd->assoc_data)
4010 ieee80211_destroy_assoc_data(sdata, false);
4011 if (ifmgd->auth_data)
4012 ieee80211_destroy_auth_data(sdata, false);
1a1cb744
JB		 4013 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4014 IEEE80211_DEAUTH_FRAME_LEN);
4015 }
4016
be72afe0
JB		 4017 /* This is a bit of a hack - we should find a better and more generic
4018 * solution to this. Normally when suspending, cfg80211 will in fact
4019 * deauthenticate. However, it doesn't (and cannot) stop an ongoing
4020 * auth (not so important) or assoc (this is the problem) process.
4021 *
4022 * As a consequence, it can happen that we are in the process of both
4023 * associating and suspending, and receive an association response
4024 * after cfg80211 has checked if it needs to disconnect, but before
4025 * we actually set the flag to drop incoming frames. This will then
4026 * cause the workqueue flush to process the association response in
4027 * the suspend, resulting in a successful association just before it
4028 * tries to remove the interface from the driver, which now though
4029 * has a channel context assigned ... this results in issues.
4030 *
4031 * To work around this (for now) simply deauth here again if we're
4032 * now connected.
4033 */
4034 if (ifmgd->associated && !sdata->local->wowlan) {
4035 u8 bssid[ETH_ALEN];
4036 struct cfg80211_deauth_request req = {
4037 .reason_code = WLAN_REASON_DEAUTH_LEAVING,
4038 .bssid = bssid,
4039 };
4040
4041 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4042 ieee80211_mgd_deauth(sdata, &req);
4043 }
4044
1a1cb744
JB		 4045 sdata_unlock(sdata);
4046}
4047
b8360ab8
JB		 4048void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
4049{
4050 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4051
8d61ffa5 4052 sdata_lock(sdata);
b8360ab8 4053 if (!ifmgd->associated) {
8d61ffa5 4054 sdata_unlock(sdata);
b8360ab8
JB		 4055 return;
4056 }
4057
4058 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
4059 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
4060 mlme_dbg(sdata, "driver requested disconnect after resume\n");
4061 ieee80211_sta_connection_lost(sdata,
4062 ifmgd->associated->bssid,
4063 WLAN_REASON_UNSPECIFIED,
4064 true);
8d61ffa5 4065 sdata_unlock(sdata);
b8360ab8
JB		 4066 return;
4067 }
8d61ffa5 4068 sdata_unlock(sdata);
b8360ab8
JB		 4069}
4070#endif
4071
9c6bd790
JB		 4072/* interface setup */
4073void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 4074{
46900298 4075 struct ieee80211_if_managed *ifmgd;
988c0f72 4076
46900298 4077 ifmgd = &sdata->u.mgd;
b291ba11 4078 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 4079 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 4080 INIT_WORK(&ifmgd->beacon_connection_loss_work,
4081 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 4082 INIT_WORK(&ifmgd->csa_connection_drop_work,
4083 ieee80211_csa_connection_drop_work);
687da132 4084 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
81dd2b88
AN		 4085 INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work,
4086 ieee80211_tdls_peer_del_work);
46900298 4087 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 4088 (unsigned long) sdata);
b291ba11
JB		 4089 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
4090 (unsigned long) sdata);
4091 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
4092 (unsigned long) sdata);
46900298 4093 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 4094 (unsigned long) sdata);
02219b3a
JB		 4095 INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk,
4096 ieee80211_sta_handle_tspec_ac_params_wk);
9c6bd790 4097
ab1faead 4098 ifmgd->flags = 0;
1478acb3 4099 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 4100 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
4101 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 4102 ifmgd->p2p_noa_index = -1;
bbbdff9e 4103
0d8614b4 4104 if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS)
0f78231b
JB		 4105 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
4106 else
4107 ifmgd->req_smps = IEEE80211_SMPS_OFF;
1277b4a9
LK		 4108
4109 /* Setup TDLS data */
4110 spin_lock_init(&ifmgd->teardown_lock);
4111 ifmgd->teardown_skb = NULL;
4112 ifmgd->orig_teardown_skb = NULL;
f0706e82
JB		 4113}
4114
77fdaa12
JB		 4115/* scan finished notification */
4116void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 4117{
31ee67a1 4118 struct ieee80211_sub_if_data *sdata;
60f8b39c 4119
77fdaa12
JB		 4120 /* Restart STA timers */
4121 rcu_read_lock();
370bd005
BG		 4122 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
4123 if (ieee80211_sdata_running(sdata))
4124 ieee80211_restart_sta_timer(sdata);
4125 }
77fdaa12
JB		 4126 rcu_read_unlock();
4127}
60f8b39c 4128
f2d9d270
JB		 4129static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
4130 struct cfg80211_bss *cbss)
4131{
4132 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4133 const u8 *ht_cap_ie, *vht_cap_ie;
4134 const struct ieee80211_ht_cap *ht_cap;
4135 const struct ieee80211_vht_cap *vht_cap;
4136 u8 chains = 1;
4137
4138 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
4139 return chains;
4140
9caf0364 4141 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 4142 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
4143 ht_cap = (void *)(ht_cap_ie + 2);
4144 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
4145 /*
4146 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
4147 * "Tx Unequal Modulation Supported" fields.
4148 */
4149 }
4150
4151 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
4152 return chains;
4153
9caf0364 4154 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 4155 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
4156 u8 nss;
4157 u16 tx_mcs_map;
4158
4159 vht_cap = (void *)(vht_cap_ie + 2);
4160 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
4161 for (nss = 8; nss > 0; nss--) {
4162 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
4163 IEEE80211_VHT_MCS_NOT_SUPPORTED)
4164 break;
4165 }
4166 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
4167 chains = max(chains, nss);
4168 }
4169
4170 return chains;
4171}
4172
b17166a7
JB		 4173static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
4174 struct cfg80211_bss *cbss)
a1cf775d
JB		 4175{
4176 struct ieee80211_local *local = sdata->local;
4177 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
53b954ee 4178 const struct ieee80211_ht_cap *ht_cap = NULL;
24398e39 4179 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 4180 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 4181 struct ieee80211_supported_band *sband;
4bf88530 4182 struct cfg80211_chan_def chandef;
f2d9d270 4183 int ret;
52a45f38
AN		 4184 u32 i;
4185 bool have_80mhz;
a1cf775d 4186
24398e39
JB		 4187 sband = local->hw.wiphy->bands[cbss->channel->band];
4188
f2d9d270
JB		 4189 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
4190 IEEE80211_STA_DISABLE_80P80MHZ |
4191 IEEE80211_STA_DISABLE_160MHZ);
4192
9caf0364
JB		 4193 rcu_read_lock();
4194
f2d9d270
JB		 4195 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
4196 sband->ht_cap.ht_supported) {
53b954ee 4197 const u8 *ht_oper_ie, *ht_cap_ie;
24398e39 4198
9caf0364 4199 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 4200 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
4201 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa 4202
53b954ee
EP		 4203 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
4204 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap))
4205 ht_cap = (void *)(ht_cap_ie + 2);
4206
4207 if (!ht_cap) {
08e6effa
JB		 4208 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4209 ht_oper = NULL;
4210 }
24398e39
JB		 4211 }
4212
f2d9d270
JB		 4213 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4214 sband->vht_cap.vht_supported) {
08e6effa 4215 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 4216
9caf0364
JB		 4217 vht_oper_ie = ieee80211_bss_get_ie(cbss,
4218 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 4219 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
4220 vht_oper = (void *)(vht_oper_ie + 2);
4221 if (vht_oper && !ht_oper) {
4222 vht_oper = NULL;
bdcbd8e0 4223 sdata_info(sdata,
f2d9d270 4224 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 4225 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4226 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 4227 }
08e6effa
JB		 4228
4229 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
4230 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
4231 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4232 vht_oper = NULL;
4233 }
24398e39
JB		 4234 }
4235
52a45f38
AN		 4236 /* Allow VHT if at least one channel on the sband supports 80 MHz */
4237 have_80mhz = false;
4238 for (i = 0; i < sband->n_channels; i++) {
4239 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED |
4240 IEEE80211_CHAN_NO_80MHZ))
4241 continue;
4242
4243 have_80mhz = true;
4244 break;
4245 }
4246
4247 if (!have_80mhz)
4248 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4249
f2d9d270
JB		 4250 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
4251 cbss->channel,
53b954ee 4252 ht_cap, ht_oper, vht_oper,
5cdaed1e 4253 &chandef, false);
04ecd257 4254
f2d9d270
JB		 4255 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
4256 local->rx_chains);
24398e39 4257
9caf0364
JB		 4258 rcu_read_unlock();
4259
04ecd257
JB		 4260 /* will change later if needed */
4261 sdata->smps_mode = IEEE80211_SMPS_OFF;
4262
34a3740d 4263 mutex_lock(&local->mtx);
f2d9d270
JB		 4264 /*
4265 * If this fails (possibly due to channel context sharing
4266 * on incompatible channels, e.g. 80+80 and 160 sharing the
4267 * same control channel) try to use a smaller bandwidth.
4268 */
4269 ret = ieee80211_vif_use_channel(sdata, &chandef,
4270 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 4271
4272 /* don't downgrade for 5 and 10 MHz channels, though. */
4273 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
4274 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 4275 goto out;
0418a445 4276
d601cd8d 4277 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 4278 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 4279 ret = ieee80211_vif_use_channel(sdata, &chandef,
4280 IEEE80211_CHANCTX_SHARED);
4281 }
34a3740d
JB		 4282 out:
4283 mutex_unlock(&local->mtx);
f2d9d270 4284 return ret;
b17166a7
JB		 4285}
4286
4287static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
c1041f10
CRI		 4288 struct cfg80211_bss *cbss, bool assoc,
4289 bool override)
b17166a7
JB		 4290{
4291 struct ieee80211_local *local = sdata->local;
4292 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4293 struct ieee80211_bss *bss = (void *)cbss->priv;
4294 struct sta_info *new_sta = NULL;
179b8fc7 4295 struct ieee80211_supported_band *sband;
c1041f10 4296 bool have_sta = false;
b17166a7
JB		 4297 int err;
4298
179b8fc7
CRI		 4299 sband = local->hw.wiphy->bands[cbss->channel->band];
4300
b17166a7
JB		 4301 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
4302 return -EINVAL;
4303
4304 if (assoc) {
4305 rcu_read_lock();
4306 have_sta = sta_info_get(sdata, cbss->bssid);
4307 rcu_read_unlock();
4308 }
4309
4310 if (!have_sta) {
4311 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
4312 if (!new_sta)
4313 return -ENOMEM;
4314 }
179b8fc7 4315
c1041f10 4316 if (new_sta || override) {
179b8fc7
CRI		 4317 err = ieee80211_prep_channel(sdata, cbss);
4318 if (err) {
4319 if (new_sta)
4320 sta_info_free(local, new_sta);
4321 return -EINVAL;
4322 }
4323 }
4324
13e0c8e3 4325 if (new_sta) {
5d6a1b06
JB		 4326 u32 rates = 0, basic_rates = 0;
4327 bool have_higher_than_11mbit;
4328 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 4329 struct ieee80211_chanctx_conf *chanctx_conf;
8cef2c9d 4330 const struct cfg80211_bss_ies *ies;
179b8fc7 4331 int shift = ieee80211_vif_get_shift(&sdata->vif);
2103dec1 4332 u32 rate_flags;
b17166a7 4333
2103dec1
SW		 4334 rcu_read_lock();
4335 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
4336 if (WARN_ON(!chanctx_conf)) {
4337 rcu_read_unlock();
c368ddaa 4338 sta_info_free(local, new_sta);
2103dec1
SW		 4339 return -EINVAL;
4340 }
4341 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
4342 rcu_read_unlock();
5d6a1b06 4343
5d6a1b06
JB		 4344 ieee80211_get_rates(sband, bss->supp_rates,
4345 bss->supp_rates_len,
4346 &rates, &basic_rates,
4347 &have_higher_than_11mbit,
2103dec1
SW		 4348 &min_rate, &min_rate_index,
4349 shift, rate_flags);
5d6a1b06
JB		 4350
4351 /*
4352 * This used to be a workaround for basic rates missing
4353 * in the association response frame. Now that we no
4354 * longer use the basic rates from there, it probably
4355 * doesn't happen any more, but keep the workaround so
4356 * in case some *other* APs are buggy in different ways
4357 * we can connect -- with a warning.
4358 */
4359 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 4360 sdata_info(sdata,
4361 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 4362 basic_rates = BIT(min_rate_index);
4363 }
4364
13e0c8e3 4365 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 4366 sdata->vif.bss_conf.basic_rates = basic_rates;
4367
4368 /* cf. IEEE 802.11 9.2.12 */
55de908a 4369 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 4370 have_higher_than_11mbit)
4371 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
4372 else
4373 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
4374
4375 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
4376
8c358bcd
JB		 4377 /* set timing information */
4378 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 4379 rcu_read_lock();
ef429dad
JB		 4380 ies = rcu_dereference(cbss->beacon_ies);
4381 if (ies) {
4382 const u8 *tim_ie;
4383
4384 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4385 sdata->vif.bss_conf.sync_device_ts =
4386 bss->device_ts_beacon;
4387 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4388 ies->data, ies->len);
4389 if (tim_ie && tim_ie[1] >= 2)
4390 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
4391 else
4392 sdata->vif.bss_conf.sync_dtim_count = 0;
30686bf7
JB		 4393 } else if (!ieee80211_hw_check(&sdata->local->hw,
4394 TIMING_BEACON_ONLY)) {
ef429dad
JB		 4395 ies = rcu_dereference(cbss->proberesp_ies);
4396 /* must be non-NULL since beacon IEs were NULL */
4397 sdata->vif.bss_conf.sync_tsf = ies->tsf;
4398 sdata->vif.bss_conf.sync_device_ts =
4399 bss->device_ts_presp;
4400 sdata->vif.bss_conf.sync_dtim_count = 0;
4401 } else {
4402 sdata->vif.bss_conf.sync_tsf = 0;
4403 sdata->vif.bss_conf.sync_device_ts = 0;
4404 sdata->vif.bss_conf.sync_dtim_count = 0;
4405 }
8cef2c9d 4406 rcu_read_unlock();
8c358bcd
JB		 4407
4408 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 4409 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 4410 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
4411 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 4412
4413 if (assoc)
13e0c8e3 4414 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 4415
13e0c8e3
JB		 4416 err = sta_info_insert(new_sta);
4417 new_sta = NULL;
a1cf775d 4418 if (err) {
bdcbd8e0
JB		 4419 sdata_info(sdata,
4420 "failed to insert STA entry for the AP (error %d)\n",
4421 err);
a1cf775d
JB		 4422 return err;
4423 }
4424 } else
b203ca39 4425 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d 4426
7d830a19
DS		 4427 /* Cancel scan to ensure that nothing interferes with connection */
4428 if (local->scanning)
4429 ieee80211_scan_cancel(local);
4430
a1cf775d
JB		 4431 return 0;
4432}
4433
77fdaa12
JB		 4434/* config hooks */
4435int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
4436 struct cfg80211_auth_request *req)
9c6bd790 4437{
66e67e41
JB		 4438 struct ieee80211_local *local = sdata->local;
4439 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4440 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 4441 u16 auth_alg;
66e67e41
JB		 4442 int err;
4443
4444 /* prepare auth data structure */
9c6bd790 4445
77fdaa12
JB		 4446 switch (req->auth_type) {
4447 case NL80211_AUTHTYPE_OPEN_SYSTEM:
4448 auth_alg = WLAN_AUTH_OPEN;
4449 break;
4450 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 4451 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 4452 return -EOPNOTSUPP;
77fdaa12
JB		 4453 auth_alg = WLAN_AUTH_SHARED_KEY;
4454 break;
4455 case NL80211_AUTHTYPE_FT:
4456 auth_alg = WLAN_AUTH_FT;
4457 break;
4458 case NL80211_AUTHTYPE_NETWORK_EAP:
4459 auth_alg = WLAN_AUTH_LEAP;
4460 break;
6b8ece3a
JM		 4461 case NL80211_AUTHTYPE_SAE:
4462 auth_alg = WLAN_AUTH_SAE;
4463 break;
77fdaa12
JB		 4464 default:
4465 return -EOPNOTSUPP;
60f8b39c 4466 }
77fdaa12 4467
6b8ece3a
JM		 4468 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
4469 req->ie_len, GFP_KERNEL);
66e67e41 4470 if (!auth_data)
9c6bd790 4471 return -ENOMEM;
77fdaa12 4472
66e67e41 4473 auth_data->bss = req->bss;
77fdaa12 4474
6b8ece3a
JM		 4475 if (req->sae_data_len >= 4) {
4476 __le16 *pos = (__le16 *) req->sae_data;
4477 auth_data->sae_trans = le16_to_cpu(pos[0]);
4478 auth_data->sae_status = le16_to_cpu(pos[1]);
4479 memcpy(auth_data->data, req->sae_data + 4,
4480 req->sae_data_len - 4);
4481 auth_data->data_len += req->sae_data_len - 4;
4482 }
4483
77fdaa12 4484 if (req->ie && req->ie_len) {
6b8ece3a
JM		 4485 memcpy(&auth_data->data[auth_data->data_len],
4486 req->ie, req->ie_len);
4487 auth_data->data_len += req->ie_len;
9c6bd790 4488 }
77fdaa12 4489
fffd0934 4490 if (req->key && req->key_len) {
66e67e41
JB		 4491 auth_data->key_len = req->key_len;
4492 auth_data->key_idx = req->key_idx;
4493 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4494 }
4495
66e67e41 4496 auth_data->algorithm = auth_alg;
60f8b39c 4497
66e67e41 4498 /* try to authenticate/probe */
2a33bee2 4499
66e67e41
JB		 4500 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4501 ifmgd->assoc_data) {
4502 err = -EBUSY;
4503 goto err_free;
2a33bee2
GE		 4504 }
4505
66e67e41
JB		 4506 if (ifmgd->auth_data)
4507 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4508
66e67e41
JB		 4509 /* prep auth_data so we don't go into idle on disassoc */
4510 ifmgd->auth_data = auth_data;
af6b6374 4511
7b119dc0
JB		 4512 if (ifmgd->associated) {
4513 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4514
89f774e6
JB		 4515 sdata_info(sdata,
4516 "disconnect from AP %pM for new auth to %pM\n",
4517 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 4518 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4519 WLAN_REASON_UNSPECIFIED,
4520 false, frame_buf);
4521
a90faa9d
EG		 4522 ieee80211_report_disconnect(sdata, frame_buf,
4523 sizeof(frame_buf), true,
4524 WLAN_REASON_UNSPECIFIED);
7b119dc0 4525 }
af6b6374 4526
bdcbd8e0 4527 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4528
c1041f10 4529 err = ieee80211_prep_connection(sdata, req->bss, false, false);
a1cf775d 4530 if (err)
66e67e41 4531 goto err_clear;
af6b6374 4532
46cad4b7 4533 err = ieee80211_auth(sdata);
66e67e41 4534 if (err) {
66e67e41
JB		 4535 sta_info_destroy_addr(sdata, req->bss->bssid);
4536 goto err_clear;
4537 }
4538
4539 /* hold our own reference */
5b112d3d 4540 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4541 return 0;
66e67e41
JB		 4542
4543 err_clear:
c84a67a2 4544 eth_zero_addr(ifmgd->bssid);
3d2abdfd 4545 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41 4546 ifmgd->auth_data = NULL;
d01f858c
MK		 4547 mutex_lock(&sdata->local->mtx);
4548 ieee80211_vif_release_channel(sdata);
4549 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 4550 err_free:
4551 kfree(auth_data);
66e67e41 4552 return err;
af6b6374
JB		 4553}
4554
77fdaa12
JB		 4555int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4556 struct cfg80211_assoc_request *req)
f0706e82 4557{
66e67e41 4558 struct ieee80211_local *local = sdata->local;
77fdaa12 4559 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4560 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4561 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4562 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4563 struct ieee80211_supported_band *sband;
b08fbbd8 4564 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4565 int i, err;
c1041f10 4566 bool override = false;
f0706e82 4567
66e67e41
JB		 4568 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4569 if (!assoc_data)
4570 return -ENOMEM;
4571
9caf0364
JB		 4572 rcu_read_lock();
4573 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4574 if (!ssidie) {
4575 rcu_read_unlock();
4576 kfree(assoc_data);
4577 return -EINVAL;
4578 }
4579 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4580 assoc_data->ssid_len = ssidie[1];
4581 rcu_read_unlock();
4582
7b119dc0
JB		 4583 if (ifmgd->associated) {
4584 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4585
89f774e6
JB		 4586 sdata_info(sdata,
4587 "disconnect from AP %pM for new assoc to %pM\n",
4588 ifmgd->associated->bssid, req->bss->bssid);
7b119dc0
JB		 4589 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4590 WLAN_REASON_UNSPECIFIED,
4591 false, frame_buf);
4592
a90faa9d
EG		 4593 ieee80211_report_disconnect(sdata, frame_buf,
4594 sizeof(frame_buf), true,
4595 WLAN_REASON_UNSPECIFIED);
7b119dc0 4596 }
66e67e41
JB		 4597
4598 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4599 err = -EBUSY;
4600 goto err_free;
af6b6374 4601 }
77fdaa12 4602
66e67e41
JB		 4603 if (ifmgd->assoc_data) {
4604 err = -EBUSY;
4605 goto err_free;
4606 }
77fdaa12 4607
66e67e41
JB		 4608 if (ifmgd->auth_data) {
4609 bool match;
4610
4611 /* keep sta info, bssid if matching */
b203ca39 4612 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4613 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4614 }
4615
66e67e41 4616 /* prepare assoc data */
095d81ce 4617
d8ec4433
JO		 4618 ifmgd->beacon_crc_valid = false;
4619
095d81ce
JB		 4620 assoc_data->wmm = bss->wmm_used &&
4621 (local->hw.queues >= IEEE80211_NUM_ACS);
095d81ce 4622
de5036aa
JB		 4623 /*
4624 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4625 * We still associate in non-HT mode (11a/b/g) if any one of these
4626 * ciphers is configured as pairwise.
4627 * We can set this to true for non-11n hardware, that'll be checked
4628 * separately along with the peer capabilities.
4629 */
1c4cb928 4630 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4631 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4632 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4633 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4634 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4635 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4636 netdev_info(sdata->dev,
d545daba 4637 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4638 }
4639 }
77fdaa12 4640
4e74bfdb
JB		 4641 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4642 sband = local->hw.wiphy->bands[req->bss->channel->band];
4643 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4644 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4645 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4646 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4647 if (!bss->wmm_used &&
4648 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4649 netdev_info(sdata->dev,
4650 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4651 }
4e74bfdb 4652
d545daba
MP		 4653 /* disable VHT if we don't support it or the AP doesn't use WMM */
4654 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4655 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4656 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4657 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4658 if (!bss->wmm_used &&
4659 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4660 netdev_info(sdata->dev,
4661 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4662 }
4663
ef96a842
BG		 4664 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4665 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4666 sizeof(ifmgd->ht_capa_mask));
4667
dd5ecfea
JB		 4668 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4669 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4670 sizeof(ifmgd->vht_capa_mask));
4671
77fdaa12 4672 if (req->ie && req->ie_len) {
66e67e41
JB		 4673 memcpy(assoc_data->ie, req->ie, req->ie_len);
4674 assoc_data->ie_len = req->ie_len;
4675 }
f679f65d 4676
66e67e41 4677 assoc_data->bss = req->bss;
f679f65d 4678
af6b6374
JB		 4679 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4680 if (ifmgd->powersave)
04ecd257 4681 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4682 else
04ecd257 4683 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4684 } else
04ecd257 4685 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4686
66e67e41 4687 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4688 assoc_data->supp_rates = bss->supp_rates;
4689 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4690
9caf0364 4691 rcu_read_lock();
9dde6423
JB		 4692 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4693 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4694 assoc_data->ap_ht_param =
4695 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4696 else
a8243b72 4697 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4698 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4699 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4700 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4701 sizeof(struct ieee80211_vht_cap));
4702 else
4703 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4704 rcu_read_unlock();
63f170e0 4705
848955cc 4706 if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) &&
30686bf7 4707 ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK),
848955cc
JB		 4708 "U-APSD not supported with HW_PS_NULLFUNC_STACK\n"))
4709 sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
4710
ab13315a 4711 if (bss->wmm_used && bss->uapsd_supported &&
848955cc 4712 (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) {
76f0303d 4713 assoc_data->uapsd = true;
ab13315a
KV		 4714 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4715 } else {
76f0303d 4716 assoc_data->uapsd = false;
ab13315a
KV		 4717 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4718 }
4719
77fdaa12 4720 if (req->prev_bssid)
66e67e41 4721 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4722
4723 if (req->use_mfp) {
4724 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4725 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4726 } else {
4727 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4728 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4729 }
4730
cd2f5dd7
AK		 4731 if (req->flags & ASSOC_REQ_USE_RRM)
4732 ifmgd->flags |= IEEE80211_STA_ENABLE_RRM;
4733 else
4734 ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM;
4735
77fdaa12
JB		 4736 if (req->crypto.control_port)
4737 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4738 else
4739 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4740
a621fa4d
JB		 4741 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4742 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4743 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4744 sdata->vif.type);
a621fa4d 4745
66e67e41
JB		 4746 /* kick off associate process */
4747
4748 ifmgd->assoc_data = assoc_data;
826262c3 4749 ifmgd->dtim_period = 0;
989c6505 4750 ifmgd->have_beacon = false;
66e67e41 4751
c1041f10
CRI		 4752 /* override HT/VHT configuration only if the AP and we support it */
4753 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
4754 struct ieee80211_sta_ht_cap sta_ht_cap;
4755
4756 if (req->flags & ASSOC_REQ_DISABLE_HT)
4757 override = true;
4758
4759 memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
4760 ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
4761
4762 /* check for 40 MHz disable override */
4763 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) &&
4764 sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
4765 !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
4766 override = true;
4767
4768 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
4769 req->flags & ASSOC_REQ_DISABLE_VHT)
4770 override = true;
4771 }
4772
4773 if (req->flags & ASSOC_REQ_DISABLE_HT) {
4774 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
4775 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4776 }
4777
4778 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4779 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4780
4781 err = ieee80211_prep_connection(sdata, req->bss, true, override);
a1cf775d
JB		 4782 if (err)
4783 goto err_clear;
66e67e41 4784
c65dd147
EG		 4785 rcu_read_lock();
4786 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4787
30686bf7 4788 if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) &&
c65dd147
EG		 4789 !beacon_ies) {
4790 /*
4791 * Wait up to one beacon interval ...
4792 * should this be more if we miss one?
4793 */
4794 sdata_info(sdata, "waiting for beacon from %pM\n",
4795 ifmgd->bssid);
4796 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4797 assoc_data->timeout_started = true;
c65dd147
EG		 4798 assoc_data->need_beacon = true;
4799 } else if (beacon_ies) {
4800 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4801 beacon_ies->data,
4802 beacon_ies->len);
ef429dad
JB		 4803 u8 dtim_count = 0;
4804
c65dd147
EG		 4805 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4806 const struct ieee80211_tim_ie *tim;
4807 tim = (void *)(tim_ie + 2);
4808 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4809 dtim_count = tim->dtim_count;
826262c3 4810 }
989c6505 4811 ifmgd->have_beacon = true;
66e67e41 4812 assoc_data->timeout = jiffies;
89afe614 4813 assoc_data->timeout_started = true;
ef429dad 4814
30686bf7 4815 if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
ef429dad
JB		 4816 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4817 sdata->vif.bss_conf.sync_device_ts =
4818 bss->device_ts_beacon;
4819 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4820 }
c65dd147
EG		 4821 } else {
4822 assoc_data->timeout = jiffies;
89afe614 4823 assoc_data->timeout_started = true;
66e67e41 4824 }
c65dd147
EG		 4825 rcu_read_unlock();
4826
8d61ffa5 4827 run_again(sdata, assoc_data->timeout);
66e67e41 4828
fcff4f10
PS		 4829 if (bss->corrupt_data) {
4830 char *corrupt_type = "data";
4831 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4832 if (bss->corrupt_data &
4833 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4834 corrupt_type = "beacon and probe response";
4835 else
4836 corrupt_type = "beacon";
4837 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4838 corrupt_type = "probe response";
bdcbd8e0
JB		 4839 sdata_info(sdata, "associating with AP with corrupt %s\n",
4840 corrupt_type);
fcff4f10
PS		 4841 }
4842
8d61ffa5 4843 return 0;
66e67e41 4844 err_clear:
c84a67a2 4845 eth_zero_addr(ifmgd->bssid);
3d2abdfd 4846 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4847 ifmgd->assoc_data = NULL;
4848 err_free:
4849 kfree(assoc_data);
66e67e41 4850 return err;
f0706e82
JB		 4851}
4852
77fdaa12 4853int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4854 struct cfg80211_deauth_request *req)
f0706e82 4855{
46900298 4856 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4857 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4858 bool tx = !req->local_state_change;
f0706e82 4859
c9c3a060
JB		 4860 if (ifmgd->auth_data &&
4861 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4862 sdata_info(sdata,
4863 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4864 req->bssid, req->reason_code,
4865 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4866
8c7d857c 4867 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4868 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4869 IEEE80211_STYPE_DEAUTH,
6863255b 4870 req->reason_code, tx,
37ad3888 4871 frame_buf);
86552017 4872 ieee80211_destroy_auth_data(sdata, false);
a90faa9d
EG		 4873 ieee80211_report_disconnect(sdata, frame_buf,
4874 sizeof(frame_buf), true,
4875 req->reason_code);
86552017 4876
c9c3a060 4877 return 0;
8c7d857c
EG		 4878 }
4879
a64cba3c
AO		 4880 if (ifmgd->assoc_data &&
4881 ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) {
4882 sdata_info(sdata,
4883 "aborting association with %pM by local choice (Reason: %u=%s)\n",
4884 req->bssid, req->reason_code,
4885 ieee80211_get_reason_code_string(req->reason_code));
4886
4887 drv_mgd_prepare_tx(sdata->local, sdata);
4888 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4889 IEEE80211_STYPE_DEAUTH,
4890 req->reason_code, tx,
4891 frame_buf);
4892 ieee80211_destroy_assoc_data(sdata, false);
4893 ieee80211_report_disconnect(sdata, frame_buf,
4894 sizeof(frame_buf), true,
4895 req->reason_code);
4896 return 0;
4897 }
4898
86552017
JB		 4899 if (ifmgd->associated &&
4900 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4901 sdata_info(sdata,
4902 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4903 req->bssid, req->reason_code,
4904 ieee80211_get_reason_code_string(req->reason_code));
4905
86552017
JB		 4906 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4907 req->reason_code, tx, frame_buf);
a90faa9d
EG		 4908 ieee80211_report_disconnect(sdata, frame_buf,
4909 sizeof(frame_buf), true,
4910 req->reason_code);
c9c3a060
JB		 4911 return 0;
4912 }
86552017 4913
c9c3a060 4914 return -ENOTCONN;
f0706e82 4915}
84363e6e 4916
77fdaa12 4917int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4918 struct cfg80211_disassoc_request *req)
9c6bd790 4919{
77fdaa12 4920 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4921 u8 bssid[ETH_ALEN];
6ae16775 4922 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4923
8d8b261a
JB		 4924 /*
4925 * cfg80211 should catch this ... but it's racy since
4926 * we can receive a disassoc frame, process it, hand it
4927 * to cfg80211 while that's in a locked section already
4928 * trying to tell us that the user wants to disconnect.
4929 */
8d61ffa5 4930 if (ifmgd->associated != req->bss)
77fdaa12 4931 return -ENOLINK;
77fdaa12 4932
bdcbd8e0 4933 sdata_info(sdata,
dfa1ad29
CO		 4934 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4935 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4936
e69e95db 4937 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4938 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4939 req->reason_code, !req->local_state_change,
4940 frame_buf);
10f644a4 4941
a90faa9d
EG		 4942 ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true,
4943 req->reason_code);
bc83b681 4944
10f644a4
JB		 4945 return 0;
4946}
026331c4 4947
afa762f6 4948void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4949{
4950 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4951
49921859
BG		 4952 /*
4953 * Make sure some work items will not run after this,
4954 * they will not do anything but might not have been
4955 * cancelled when disconnecting.
4956 */
4957 cancel_work_sync(&ifmgd->monitor_work);
4958 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4959 cancel_work_sync(&ifmgd->request_smps_work);
4960 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4961 cancel_work_sync(&ifmgd->chswitch_work);
81dd2b88 4962 cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work);
49921859 4963
8d61ffa5 4964 sdata_lock(sdata);
959867fa
JB		 4965 if (ifmgd->assoc_data) {
4966 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4967 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4968 cfg80211_assoc_timeout(sdata->dev, bss);
4969 }
54e4ffb2
JB		 4970 if (ifmgd->auth_data)
4971 ieee80211_destroy_auth_data(sdata, false);
1277b4a9
LK		 4972 spin_lock_bh(&ifmgd->teardown_lock);
4973 if (ifmgd->teardown_skb) {
4974 kfree_skb(ifmgd->teardown_skb);
4975 ifmgd->teardown_skb = NULL;
4976 ifmgd->orig_teardown_skb = NULL;
4977 }
4978 spin_unlock_bh(&ifmgd->teardown_lock);
54e4ffb2 4979 del_timer_sync(&ifmgd->timer);
8d61ffa5 4980 sdata_unlock(sdata);
54e4ffb2
JB		 4981}
4982
a97c13c3
JO		 4983void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4984 enum nl80211_cqm_rssi_threshold_event rssi_event,
4985 gfp_t gfp)
4986{
4987 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4988
b5878a2d
JB		 4989 trace_api_cqm_rssi_notify(sdata, rssi_event);
4990
a97c13c3
JO		 4991 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4992}
4993EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
98f03342
JB		 4994
4995void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp)
4996{
4997 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4998
4999 trace_api_cqm_beacon_loss_notify(sdata->local, sdata);
5000
5001 cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp);
5002}
5003EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify);
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