]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - net/mac80211/mlme.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
mac80211: verify deauthentication and return error on failure
[mirror_ubuntu-zesty-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>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
5b323edb 14#include <linux/delay.h>
f0706e82
JB		 15#include <linux/if_ether.h>
16#include <linux/skbuff.h>
f0706e82 17#include <linux/if_arp.h>
f0706e82 18#include <linux/etherdevice.h>
d9b93842 19#include <linux/moduleparam.h>
d0709a65 20#include <linux/rtnetlink.h>
e8db0be1 21#include <linux/pm_qos.h>
d91f36db 22#include <linux/crc32.h>
5a0e3ad6 23#include <linux/slab.h>
bc3b2d7f 24#include <linux/export.h>
f0706e82 25#include <net/mac80211.h>
472dbc45 26#include <asm/unaligned.h>
60f8b39c 27
f0706e82 28#include "ieee80211_i.h"
24487981 29#include "driver-ops.h"
2c8dccc7
JB		 30#include "rate.h"
31#include "led.h"
f0706e82 32
1672c0e3 33#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
cb236d2d 34#define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 35#define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10)
36#define IEEE80211_AUTH_MAX_TRIES 3
37#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
38#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
cb236d2d 39#define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2)
1672c0e3
JB		 40#define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10)
41#define IEEE80211_ASSOC_MAX_TRIES 3
66e67e41 42
180205bd
BG		 43static int max_nullfunc_tries = 2;
44module_param(max_nullfunc_tries, int, 0644);
45MODULE_PARM_DESC(max_nullfunc_tries,
46 "Maximum nullfunc tx tries before disconnecting (reason 4).");
47
48static int max_probe_tries = 5;
49module_param(max_probe_tries, int, 0644);
50MODULE_PARM_DESC(max_probe_tries,
51 "Maximum probe tries before disconnecting (reason 4).");
b291ba11
JB		 52
53/*
7ccc8bd7
FF		 54 * Beacon loss timeout is calculated as N frames times the
55 * advertised beacon interval. This may need to be somewhat
56 * higher than what hardware might detect to account for
57 * delays in the host processing frames. But since we also
58 * probe on beacon miss before declaring the connection lost
59 * default to what we want.
b291ba11 60 */
59c1ec2b
BG		 61static int beacon_loss_count = 7;
62module_param(beacon_loss_count, int, 0644);
63MODULE_PARM_DESC(beacon_loss_count,
64 "Number of beacon intervals before we decide beacon was lost.");
7ccc8bd7 65
b291ba11
JB		 66/*
67 * Time the connection can be idle before we probe
68 * it to see if we can still talk to the AP.
69 */
d1c5091f 70#define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
b291ba11
JB		 71/*
72 * Time we wait for a probe response after sending
73 * a probe request because of beacon loss or for
74 * checking the connection still works.
75 */
180205bd
BG		 76static int probe_wait_ms = 500;
77module_param(probe_wait_ms, int, 0644);
78MODULE_PARM_DESC(probe_wait_ms,
79 "Maximum time(ms) to wait for probe response"
80 " before disconnecting (reason 4).");
f0706e82 81
17e4ec14
JM		 82/*
83 * Weight given to the latest Beacon frame when calculating average signal
84 * strength for Beacon frames received in the current BSS. This must be
85 * between 1 and 15.
86 */
87#define IEEE80211_SIGNAL_AVE_WEIGHT 3
88
391a200a
JM		 89/*
90 * How many Beacon frames need to have been used in average signal strength
91 * before starting to indicate signal change events.
92 */
93#define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
94
ca386f31
JB		 95/*
96 * We can have multiple work items (and connection probing)
97 * scheduling this timer, but we need to take care to only
98 * reschedule it when it should fire _earlier_ than it was
99 * asked for before, or if it's not pending right now. This
100 * function ensures that. Note that it then is required to
101 * run this function for all timeouts after the first one
102 * has happened -- the work that runs from this timer will
103 * do that.
104 */
8d61ffa5
JB		 105static void run_again(struct ieee80211_sub_if_data *sdata,
106 unsigned long timeout)
ca386f31 107{
8d61ffa5 108 sdata_assert_lock(sdata);
ca386f31 109
8d61ffa5
JB		 110 if (!timer_pending(&sdata->u.mgd.timer) ||
111 time_before(timeout, sdata->u.mgd.timer.expires))
112 mod_timer(&sdata->u.mgd.timer, timeout);
ca386f31
JB		 113}
114
d3a910a8 115void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
b291ba11 116{
c1288b12 117 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
b291ba11
JB		 118 return;
119
7eeff74c
JB		 120 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
121 return;
122
b291ba11 123 mod_timer(&sdata->u.mgd.bcn_mon_timer,
7ccc8bd7 124 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
b291ba11
JB		 125}
126
be099e82
LR		 127void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
128{
0c699c3a
LR		 129 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
130
8628172f
SG		 131 if (unlikely(!sdata->u.mgd.associated))
132 return;
133
448cd2e2
EP		 134 ifmgd->probe_send_count = 0;
135
be099e82
LR		 136 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
137 return;
138
139 mod_timer(&sdata->u.mgd.conn_mon_timer,
140 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
141}
142
5484e237 143static int ecw2cw(int ecw)
60f8b39c 144{
5484e237 145 return (1 << ecw) - 1;
60f8b39c
JB		 146}
147
6565ec9b
JB		 148static u32
149ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
150 struct ieee80211_supported_band *sband,
151 struct ieee80211_channel *channel,
152 const struct ieee80211_ht_operation *ht_oper,
153 const struct ieee80211_vht_operation *vht_oper,
5cdaed1e 154 struct cfg80211_chan_def *chandef, bool tracking)
6565ec9b 155{
5cdaed1e 156 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6565ec9b
JB		 157 struct cfg80211_chan_def vht_chandef;
158 u32 ht_cfreq, ret;
159
160 chandef->chan = channel;
161 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
162 chandef->center_freq1 = channel->center_freq;
163 chandef->center_freq2 = 0;
164
165 if (!ht_oper || !sband->ht_cap.ht_supported) {
166 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
167 goto out;
168 }
169
170 chandef->width = NL80211_CHAN_WIDTH_20;
171
172 ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan,
173 channel->band);
174 /* check that channel matches the right operating channel */
5cdaed1e 175 if (!tracking && channel->center_freq != ht_cfreq) {
6565ec9b
JB		 176 /*
177 * It's possible that some APs are confused here;
178 * Netgear WNDR3700 sometimes reports 4 higher than
179 * the actual channel in association responses, but
180 * since we look at probe response/beacon data here
181 * it should be OK.
182 */
5cdaed1e
JB		 183 sdata_info(sdata,
184 "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n",
185 channel->center_freq, ht_cfreq,
186 ht_oper->primary_chan, channel->band);
6565ec9b
JB		 187 ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
188 goto out;
189 }
190
191 /* check 40 MHz support, if we have it */
192 if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
193 switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
194 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
195 chandef->width = NL80211_CHAN_WIDTH_40;
196 chandef->center_freq1 += 10;
197 break;
198 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
199 chandef->width = NL80211_CHAN_WIDTH_40;
200 chandef->center_freq1 -= 10;
201 break;
202 }
203 } else {
204 /* 40 MHz (and 80 MHz) must be supported for VHT */
205 ret = IEEE80211_STA_DISABLE_VHT;
85220d71
JB		 206 /* also mark 40 MHz disabled */
207 ret |= IEEE80211_STA_DISABLE_40MHZ;
6565ec9b
JB		 208 goto out;
209 }
210
211 if (!vht_oper || !sband->vht_cap.vht_supported) {
212 ret = IEEE80211_STA_DISABLE_VHT;
213 goto out;
214 }
215
216 vht_chandef.chan = channel;
217 vht_chandef.center_freq1 =
218 ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
219 channel->band);
220 vht_chandef.center_freq2 = 0;
221
6565ec9b
JB		 222 switch (vht_oper->chan_width) {
223 case IEEE80211_VHT_CHANWIDTH_USE_HT:
224 vht_chandef.width = chandef->width;
225 break;
226 case IEEE80211_VHT_CHANWIDTH_80MHZ:
227 vht_chandef.width = NL80211_CHAN_WIDTH_80;
228 break;
229 case IEEE80211_VHT_CHANWIDTH_160MHZ:
230 vht_chandef.width = NL80211_CHAN_WIDTH_160;
231 break;
232 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
233 vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
6553bf04
JB		 234 vht_chandef.center_freq2 =
235 ieee80211_channel_to_frequency(
236 vht_oper->center_freq_seg2_idx,
237 channel->band);
6565ec9b
JB		 238 break;
239 default:
5cdaed1e 240 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 241 sdata_info(sdata,
242 "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
243 vht_oper->chan_width);
6565ec9b
JB		 244 ret = IEEE80211_STA_DISABLE_VHT;
245 goto out;
246 }
247
248 if (!cfg80211_chandef_valid(&vht_chandef)) {
5cdaed1e 249 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 250 sdata_info(sdata,
251 "AP VHT information is invalid, disable VHT\n");
6565ec9b
JB		 252 ret = IEEE80211_STA_DISABLE_VHT;
253 goto out;
254 }
255
256 if (cfg80211_chandef_identical(chandef, &vht_chandef)) {
257 ret = 0;
258 goto out;
259 }
260
261 if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) {
5cdaed1e 262 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
30eb1dc2
JB		 263 sdata_info(sdata,
264 "AP VHT information doesn't match HT, disable VHT\n");
6565ec9b
JB		 265 ret = IEEE80211_STA_DISABLE_VHT;
266 goto out;
267 }
268
269 *chandef = vht_chandef;
270
271 ret = 0;
272
273out:
586e01ed
JB		 274 /* don't print the message below for VHT mismatch if VHT is disabled */
275 if (ret & IEEE80211_STA_DISABLE_VHT)
276 vht_chandef = *chandef;
277
ddfe49b4
JB		 278 /*
279 * Ignore the DISABLED flag when we're already connected and only
280 * tracking the APs beacon for bandwidth changes - otherwise we
281 * might get disconnected here if we connect to an AP, update our
282 * regulatory information based on the AP's country IE and the
283 * information we have is wrong/outdated and disables the channel
284 * that we're actually using for the connection to the AP.
285 */
6565ec9b 286 while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef,
ddfe49b4
JB		 287 tracking ? 0 :
288 IEEE80211_CHAN_DISABLED)) {
6565ec9b
JB		 289 if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) {
290 ret = IEEE80211_STA_DISABLE_HT |
291 IEEE80211_STA_DISABLE_VHT;
b56e4b85 292 break;
6565ec9b
JB		 293 }
294
e6b7cde4 295 ret |= ieee80211_chandef_downgrade(chandef);
6565ec9b
JB		 296 }
297
5cdaed1e 298 if (chandef->width != vht_chandef.width && !tracking)
6565ec9b
JB		 299 sdata_info(sdata,
300 "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n");
301
302 WARN_ON_ONCE(!cfg80211_chandef_valid(chandef));
303 return ret;
304}
305
30eb1dc2
JB		 306static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
307 struct sta_info *sta,
308 const struct ieee80211_ht_operation *ht_oper,
309 const struct ieee80211_vht_operation *vht_oper,
310 const u8 *bssid, u32 *changed)
d5522e03
JB		 311{
312 struct ieee80211_local *local = sdata->local;
30eb1dc2 313 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d5522e03 314 struct ieee80211_supported_band *sband;
55de908a 315 struct ieee80211_channel *chan;
30eb1dc2 316 struct cfg80211_chan_def chandef;
9ed6bcce 317 u16 ht_opmode;
30eb1dc2
JB		 318 u32 flags;
319 enum ieee80211_sta_rx_bandwidth new_sta_bw;
320 int ret;
d5522e03 321
30eb1dc2
JB		 322 /* if HT was/is disabled, don't track any bandwidth changes */
323 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper)
1128958d
JB		 324 return 0;
325
30eb1dc2
JB		 326 /* don't check VHT if we associated as non-VHT station */
327 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
328 vht_oper = NULL;
329
330 if (WARN_ON_ONCE(!sta))
331 return -EINVAL;
332
017b45bb
AA		 333 /*
334 * if bss configuration changed store the new one -
335 * this may be applicable even if channel is identical
336 */
337 ht_opmode = le16_to_cpu(ht_oper->operation_mode);
338 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
339 *changed |= BSS_CHANGED_HT;
340 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
341 }
342
f2d9330e 343 chan = sdata->vif.bss_conf.chandef.chan;
55de908a 344 sband = local->hw.wiphy->bands[chan->band];
d5522e03 345
30eb1dc2
JB		 346 /* calculate new channel (type) based on HT/VHT operation IEs */
347 flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper,
5cdaed1e 348 vht_oper, &chandef, true);
30eb1dc2
JB		 349
350 /*
351 * Downgrade the new channel if we associated with restricted
352 * capabilities. For example, if we associated as a 20 MHz STA
353 * to a 40 MHz AP (due to regulatory, capabilities or config
354 * reasons) then switching to a 40 MHz channel now won't do us
355 * any good -- we couldn't use it with the AP.
356 */
357 if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ &&
358 chandef.width == NL80211_CHAN_WIDTH_80P80)
e6b7cde4 359 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 360 if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ &&
361 chandef.width == NL80211_CHAN_WIDTH_160)
e6b7cde4 362 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 363 if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ &&
364 chandef.width > NL80211_CHAN_WIDTH_20)
e6b7cde4 365 flags |= ieee80211_chandef_downgrade(&chandef);
30eb1dc2
JB		 366
367 if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef))
368 return 0;
369
370 sdata_info(sdata,
371 "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n",
372 ifmgd->bssid, chandef.chan->center_freq, chandef.width,
373 chandef.center_freq1, chandef.center_freq2);
374
375 if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT |
376 IEEE80211_STA_DISABLE_VHT |
377 IEEE80211_STA_DISABLE_40MHZ |
378 IEEE80211_STA_DISABLE_80P80MHZ |
379 IEEE80211_STA_DISABLE_160MHZ)) ||
380 !cfg80211_chandef_valid(&chandef)) {
381 sdata_info(sdata,
382 "AP %pM changed bandwidth in a way we can't support - disconnect\n",
383 ifmgd->bssid);
384 return -EINVAL;
385 }
386
387 switch (chandef.width) {
388 case NL80211_CHAN_WIDTH_20_NOHT:
389 case NL80211_CHAN_WIDTH_20:
390 new_sta_bw = IEEE80211_STA_RX_BW_20;
391 break;
4bf88530 392 case NL80211_CHAN_WIDTH_40:
30eb1dc2 393 new_sta_bw = IEEE80211_STA_RX_BW_40;
64f68e5d 394 break;
30eb1dc2
JB		 395 case NL80211_CHAN_WIDTH_80:
396 new_sta_bw = IEEE80211_STA_RX_BW_80;
397 break;
398 case NL80211_CHAN_WIDTH_80P80:
399 case NL80211_CHAN_WIDTH_160:
400 new_sta_bw = IEEE80211_STA_RX_BW_160;
64f68e5d 401 break;
30eb1dc2
JB		 402 default:
403 return -EINVAL;
64f68e5d 404 }
d5522e03 405
30eb1dc2
JB		 406 if (new_sta_bw > sta->cur_max_bandwidth)
407 new_sta_bw = sta->cur_max_bandwidth;
64f68e5d 408
30eb1dc2
JB		 409 if (new_sta_bw < sta->sta.bandwidth) {
410 sta->sta.bandwidth = new_sta_bw;
411 rate_control_rate_update(local, sband, sta,
412 IEEE80211_RC_BW_CHANGED);
413 }
64f68e5d 414
30eb1dc2
JB		 415 ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed);
416 if (ret) {
417 sdata_info(sdata,
418 "AP %pM changed bandwidth to incompatible one - disconnect\n",
419 ifmgd->bssid);
420 return ret;
421 }
7cc44ed4 422
30eb1dc2
JB		 423 if (new_sta_bw > sta->sta.bandwidth) {
424 sta->sta.bandwidth = new_sta_bw;
425 rate_control_rate_update(local, sband, sta,
426 IEEE80211_RC_BW_CHANGED);
0aaffa9b 427 }
d5522e03 428
30eb1dc2 429 return 0;
d5522e03
JB		 430}
431
9c6bd790
JB		 432/* frame sending functions */
433
66e67e41 434static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
9dde6423 435 struct sk_buff *skb, u8 ap_ht_param,
66e67e41
JB		 436 struct ieee80211_supported_band *sband,
437 struct ieee80211_channel *channel,
438 enum ieee80211_smps_mode smps)
439{
66e67e41
JB		 440 u8 *pos;
441 u32 flags = channel->flags;
442 u16 cap;
443 struct ieee80211_sta_ht_cap ht_cap;
444
445 BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
446
66e67e41
JB		 447 memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
448 ieee80211_apply_htcap_overrides(sdata, &ht_cap);
449
66e67e41
JB		 450 /* determine capability flags */
451 cap = ht_cap.cap;
452
9dde6423 453 switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
66e67e41
JB		 454 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
455 if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
456 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
457 cap &= ~IEEE80211_HT_CAP_SGI_40;
458 }
459 break;
460 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
461 if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
462 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
463 cap &= ~IEEE80211_HT_CAP_SGI_40;
464 }
465 break;
466 }
467
24398e39
JB		 468 /*
469 * If 40 MHz was disabled associate as though we weren't
470 * capable of 40 MHz -- some broken APs will never fall
471 * back to trying to transmit in 20 MHz.
472 */
473 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) {
474 cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
475 cap &= ~IEEE80211_HT_CAP_SGI_40;
476 }
477
66e67e41
JB		 478 /* set SM PS mode properly */
479 cap &= ~IEEE80211_HT_CAP_SM_PS;
480 switch (smps) {
481 case IEEE80211_SMPS_AUTOMATIC:
482 case IEEE80211_SMPS_NUM_MODES:
483 WARN_ON(1);
484 case IEEE80211_SMPS_OFF:
485 cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
486 IEEE80211_HT_CAP_SM_PS_SHIFT;
487 break;
488 case IEEE80211_SMPS_STATIC:
489 cap |= WLAN_HT_CAP_SM_PS_STATIC <<
490 IEEE80211_HT_CAP_SM_PS_SHIFT;
491 break;
492 case IEEE80211_SMPS_DYNAMIC:
493 cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
494 IEEE80211_HT_CAP_SM_PS_SHIFT;
495 break;
496 }
497
498 /* reserve and fill IE */
499 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
500 ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
501}
502
d545daba
MP		 503static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
504 struct sk_buff *skb,
b08fbbd8
JB		 505 struct ieee80211_supported_band *sband,
506 struct ieee80211_vht_cap *ap_vht_cap)
d545daba
MP		 507{
508 u8 *pos;
509 u32 cap;
510 struct ieee80211_sta_vht_cap vht_cap;
c1cf6d4e 511 u32 mask, ap_bf_sts, our_bf_sts;
d545daba
MP		 512
513 BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap));
514
515 memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
dd5ecfea 516 ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
d545daba
MP		 517
518 /* determine capability flags */
519 cap = vht_cap.cap;
520
f2d9d270
JB		 521 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) {
522 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
523 cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
524 }
525
526 if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) {
527 cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
528 cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
529 }
530
b08fbbd8
JB		 531 /*
532 * Some APs apparently get confused if our capabilities are better
533 * than theirs, so restrict what we advertise in the assoc request.
534 */
535 if (!(ap_vht_cap->vht_cap_info &
536 cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)))
537 cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
538
c1cf6d4e
ES		 539 mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK;
540
541 ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask;
542 our_bf_sts = cap & mask;
543
544 if (ap_bf_sts < our_bf_sts) {
545 cap &= ~mask;
546 cap |= ap_bf_sts;
547 }
548
d545daba 549 /* reserve and fill IE */
d4950281 550 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
d545daba
MP		 551 ieee80211_ie_build_vht_cap(pos, &vht_cap, cap);
552}
553
66e67e41
JB		 554static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
555{
556 struct ieee80211_local *local = sdata->local;
557 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
558 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
559 struct sk_buff *skb;
560 struct ieee80211_mgmt *mgmt;
561 u8 *pos, qos_info;
562 size_t offset = 0, noffset;
2103dec1 563 int i, count, rates_len, supp_rates_len, shift;
66e67e41
JB		 564 u16 capab;
565 struct ieee80211_supported_band *sband;
55de908a
JB		 566 struct ieee80211_chanctx_conf *chanctx_conf;
567 struct ieee80211_channel *chan;
2103dec1 568 u32 rate_flags, rates = 0;
66e67e41 569
8d61ffa5 570 sdata_assert_lock(sdata);
66e67e41 571
55de908a
JB		 572 rcu_read_lock();
573 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
574 if (WARN_ON(!chanctx_conf)) {
575 rcu_read_unlock();
576 return;
577 }
4bf88530 578 chan = chanctx_conf->def.chan;
2103dec1 579 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
55de908a
JB		 580 rcu_read_unlock();
581 sband = local->hw.wiphy->bands[chan->band];
2103dec1 582 shift = ieee80211_vif_get_shift(&sdata->vif);
66e67e41
JB		 583
584 if (assoc_data->supp_rates_len) {
585 /*
586 * Get all rates supported by the device and the AP as
587 * some APs don't like getting a superset of their rates
588 * in the association request (e.g. D-Link DAP 1353 in
589 * b-only mode)...
590 */
2103dec1
SW		 591 rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband,
592 assoc_data->supp_rates,
593 assoc_data->supp_rates_len,
594 &rates);
66e67e41
JB		 595 } else {
596 /*
597 * In case AP not provide any supported rates information
598 * before association, we send information element(s) with
599 * all rates that we support.
600 */
2103dec1
SW		 601 rates_len = 0;
602 for (i = 0; i < sband->n_bitrates; i++) {
603 if ((rate_flags & sband->bitrates[i].flags)
604 != rate_flags)
605 continue;
606 rates |= BIT(i);
607 rates_len++;
608 }
66e67e41
JB		 609 }
610
611 skb = alloc_skb(local->hw.extra_tx_headroom +
612 sizeof(*mgmt) + /* bit too much but doesn't matter */
613 2 + assoc_data->ssid_len + /* SSID */
614 4 + rates_len + /* (extended) rates */
615 4 + /* power capability */
616 2 + 2 * sband->n_channels + /* supported channels */
617 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
d4950281 618 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */
66e67e41
JB		 619 assoc_data->ie_len + /* extra IEs */
620 9, /* WMM */
621 GFP_KERNEL);
622 if (!skb)
623 return;
624
625 skb_reserve(skb, local->hw.extra_tx_headroom);
626
627 capab = WLAN_CAPABILITY_ESS;
628
629 if (sband->band == IEEE80211_BAND_2GHZ) {
630 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
631 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
632 if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
633 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
634 }
635
636 if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
637 capab |= WLAN_CAPABILITY_PRIVACY;
638
639 if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
640 (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
641 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
642
643 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
644 memset(mgmt, 0, 24);
645 memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
646 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
647 memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
648
649 if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
650 skb_put(skb, 10);
651 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
652 IEEE80211_STYPE_REASSOC_REQ);
653 mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
654 mgmt->u.reassoc_req.listen_interval =
655 cpu_to_le16(local->hw.conf.listen_interval);
656 memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
657 ETH_ALEN);
658 } else {
659 skb_put(skb, 4);
660 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
661 IEEE80211_STYPE_ASSOC_REQ);
662 mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
663 mgmt->u.assoc_req.listen_interval =
664 cpu_to_le16(local->hw.conf.listen_interval);
665 }
666
667 /* SSID */
668 pos = skb_put(skb, 2 + assoc_data->ssid_len);
669 *pos++ = WLAN_EID_SSID;
670 *pos++ = assoc_data->ssid_len;
671 memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
672
673 /* add all rates which were marked to be used above */
674 supp_rates_len = rates_len;
675 if (supp_rates_len > 8)
676 supp_rates_len = 8;
677
678 pos = skb_put(skb, supp_rates_len + 2);
679 *pos++ = WLAN_EID_SUPP_RATES;
680 *pos++ = supp_rates_len;
681
682 count = 0;
683 for (i = 0; i < sband->n_bitrates; i++) {
684 if (BIT(i) & rates) {
2103dec1
SW		 685 int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
686 5 * (1 << shift));
687 *pos++ = (u8) rate;
66e67e41
JB		 688 if (++count == 8)
689 break;
690 }
691 }
692
693 if (rates_len > count) {
694 pos = skb_put(skb, rates_len - count + 2);
695 *pos++ = WLAN_EID_EXT_SUPP_RATES;
696 *pos++ = rates_len - count;
697
698 for (i++; i < sband->n_bitrates; i++) {
699 if (BIT(i) & rates) {
2103dec1
SW		 700 int rate;
701 rate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
702 5 * (1 << shift));
703 *pos++ = (u8) rate;
66e67e41
JB		 704 }
705 }
706 }
707
708 if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
709 /* 1. power capabilities */
710 pos = skb_put(skb, 4);
711 *pos++ = WLAN_EID_PWR_CAPABILITY;
712 *pos++ = 2;
713 *pos++ = 0; /* min tx power */
0430c883
SW		 714 /* max tx power */
715 *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def);
66e67e41
JB		 716
717 /* 2. supported channels */
718 /* TODO: get this in reg domain format */
719 pos = skb_put(skb, 2 * sband->n_channels + 2);
720 *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
721 *pos++ = 2 * sband->n_channels;
722 for (i = 0; i < sband->n_channels; i++) {
723 *pos++ = ieee80211_frequency_to_channel(
724 sband->channels[i].center_freq);
725 *pos++ = 1; /* one channel in the subband*/
726 }
727 }
728
729 /* if present, add any custom IEs that go before HT */
b3f51e94 730 if (assoc_data->ie_len) {
66e67e41
JB		 731 static const u8 before_ht[] = {
732 WLAN_EID_SSID,
733 WLAN_EID_SUPP_RATES,
734 WLAN_EID_EXT_SUPP_RATES,
735 WLAN_EID_PWR_CAPABILITY,
736 WLAN_EID_SUPPORTED_CHANNELS,
737 WLAN_EID_RSN,
738 WLAN_EID_QOS_CAPA,
739 WLAN_EID_RRM_ENABLED_CAPABILITIES,
740 WLAN_EID_MOBILITY_DOMAIN,
741 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
742 };
743 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
744 before_ht, ARRAY_SIZE(before_ht),
745 offset);
746 pos = skb_put(skb, noffset - offset);
747 memcpy(pos, assoc_data->ie + offset, noffset - offset);
748 offset = noffset;
749 }
750
f2d9d270
JB		 751 if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
752 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)))
753 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
754
a8243b72 755 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
9dde6423 756 ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param,
04ecd257 757 sband, chan, sdata->smps_mode);
66e67e41 758
3de3802c
JB		 759 /* if present, add any custom IEs that go before VHT */
760 if (assoc_data->ie_len) {
761 static const u8 before_vht[] = {
762 WLAN_EID_SSID,
763 WLAN_EID_SUPP_RATES,
764 WLAN_EID_EXT_SUPP_RATES,
765 WLAN_EID_PWR_CAPABILITY,
766 WLAN_EID_SUPPORTED_CHANNELS,
767 WLAN_EID_RSN,
768 WLAN_EID_QOS_CAPA,
769 WLAN_EID_RRM_ENABLED_CAPABILITIES,
770 WLAN_EID_MOBILITY_DOMAIN,
771 WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
772 WLAN_EID_HT_CAPABILITY,
773 WLAN_EID_BSS_COEX_2040,
774 WLAN_EID_EXT_CAPABILITY,
775 WLAN_EID_QOS_TRAFFIC_CAPA,
776 WLAN_EID_TIM_BCAST_REQ,
777 WLAN_EID_INTERWORKING,
778 };
779 noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
780 before_vht, ARRAY_SIZE(before_vht),
781 offset);
782 pos = skb_put(skb, noffset - offset);
783 memcpy(pos, assoc_data->ie + offset, noffset - offset);
784 offset = noffset;
785 }
786
d545daba 787 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
b08fbbd8
JB		 788 ieee80211_add_vht_ie(sdata, skb, sband,
789 &assoc_data->ap_vht_cap);
d545daba 790
66e67e41 791 /* if present, add any custom non-vendor IEs that go after HT */
b3f51e94 792 if (assoc_data->ie_len) {
66e67e41
JB		 793 noffset = ieee80211_ie_split_vendor(assoc_data->ie,
794 assoc_data->ie_len,
795 offset);
796 pos = skb_put(skb, noffset - offset);
797 memcpy(pos, assoc_data->ie + offset, noffset - offset);
798 offset = noffset;
799 }
800
76f0303d
JB		 801 if (assoc_data->wmm) {
802 if (assoc_data->uapsd) {
dc41e4d4
EP		 803 qos_info = ifmgd->uapsd_queues;
804 qos_info |= (ifmgd->uapsd_max_sp_len <<
66e67e41
JB		 805 IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
806 } else {
807 qos_info = 0;
808 }
809
810 pos = skb_put(skb, 9);
811 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
812 *pos++ = 7; /* len */
813 *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
814 *pos++ = 0x50;
815 *pos++ = 0xf2;
816 *pos++ = 2; /* WME */
817 *pos++ = 0; /* WME info */
818 *pos++ = 1; /* WME ver */
819 *pos++ = qos_info;
820 }
821
822 /* add any remaining custom (i.e. vendor specific here) IEs */
b3f51e94 823 if (assoc_data->ie_len) {
66e67e41
JB		 824 noffset = assoc_data->ie_len;
825 pos = skb_put(skb, noffset - offset);
826 memcpy(pos, assoc_data->ie + offset, noffset - offset);
827 }
828
a1845fc7
JB		 829 drv_mgd_prepare_tx(local, sdata);
830
66e67e41 831 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
1672c0e3
JB		 832 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
833 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
834 IEEE80211_TX_INTFL_MLME_CONN_TX;
66e67e41
JB		 835 ieee80211_tx_skb(sdata, skb);
836}
837
572e0012
KV		 838void ieee80211_send_pspoll(struct ieee80211_local *local,
839 struct ieee80211_sub_if_data *sdata)
840{
572e0012
KV		 841 struct ieee80211_pspoll *pspoll;
842 struct sk_buff *skb;
572e0012 843
d8cd189e
KV		 844 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
845 if (!skb)
572e0012 846 return;
572e0012 847
d8cd189e
KV		 848 pspoll = (struct ieee80211_pspoll *) skb->data;
849 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
572e0012 850
62ae67be
JB		 851 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
852 ieee80211_tx_skb(sdata, skb);
572e0012
KV		 853}
854
965bedad
JB		 855void ieee80211_send_nullfunc(struct ieee80211_local *local,
856 struct ieee80211_sub_if_data *sdata,
857 int powersave)
858{
859 struct sk_buff *skb;
d8cd189e 860 struct ieee80211_hdr_3addr *nullfunc;
b6f35301 861 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
965bedad 862
d8cd189e
KV		 863 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
864 if (!skb)
965bedad 865 return;
965bedad 866
d8cd189e 867 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
965bedad 868 if (powersave)
d8cd189e 869 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
965bedad 870
6c17b77b
SF		 871 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
872 IEEE80211_TX_INTFL_OFFCHAN_TX_OK;
ff40b425
PF		 873
874 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
875 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
876
392b9ffb 877 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b6f35301
RM		 878 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE;
879
62ae67be 880 ieee80211_tx_skb(sdata, skb);
965bedad
JB		 881}
882
d524215f
FF		 883static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
884 struct ieee80211_sub_if_data *sdata)
885{
886 struct sk_buff *skb;
887 struct ieee80211_hdr *nullfunc;
888 __le16 fc;
889
890 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
891 return;
892
893 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
d15b8459 894 if (!skb)
d524215f 895 return;
d15b8459 896
d524215f
FF		 897 skb_reserve(skb, local->hw.extra_tx_headroom);
898
899 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
900 memset(nullfunc, 0, 30);
901 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
902 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
903 nullfunc->frame_control = fc;
904 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
905 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
906 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
907 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
908
909 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
910 ieee80211_tx_skb(sdata, skb);
911}
912
cc32abd4
JB		 913/* spectrum management related things */
914static void ieee80211_chswitch_work(struct work_struct *work)
915{
916 struct ieee80211_sub_if_data *sdata =
917 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
675a0b04 918 struct ieee80211_local *local = sdata->local;
cc32abd4 919 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
7578d575
AN		 920 u32 changed = 0;
921 int ret;
cc32abd4 922
9607e6b6 923 if (!ieee80211_sdata_running(sdata))
cc32abd4
JB		 924 return;
925
8d61ffa5 926 sdata_lock(sdata);
77fdaa12
JB		 927 if (!ifmgd->associated)
928 goto out;
cc32abd4 929
34a3740d 930 mutex_lock(&local->mtx);
33787fc4 931 ret = ieee80211_vif_change_channel(sdata, &changed);
34a3740d 932 mutex_unlock(&local->mtx);
7578d575
AN		 933 if (ret) {
934 sdata_info(sdata,
935 "vif channel switch failed, disconnecting\n");
936 ieee80211_queue_work(&sdata->local->hw,
937 &ifmgd->csa_connection_drop_work);
938 goto out;
939 }
675a0b04 940
7578d575 941 if (!local->use_chanctx) {
33787fc4 942 local->_oper_chandef = sdata->csa_chandef;
7578d575
AN		 943 /* Call "hw_config" only if doing sw channel switch.
944 * Otherwise update the channel directly
945 */
946 if (!local->ops->channel_switch)
947 ieee80211_hw_config(local, 0);
948 else
949 local->hw.conf.chandef = local->_oper_chandef;
5ce6e438 950 }
77fdaa12 951
cc32abd4 952 /* XXX: shouldn't really modify cfg80211-owned data! */
33787fc4 953 ifmgd->associated->channel = sdata->csa_chandef.chan;
cc32abd4 954
57eebdf3 955 /* XXX: wait for a beacon first? */
675a0b04 956 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 957 IEEE80211_MAX_QUEUE_MAP,
cc32abd4 958 IEEE80211_QUEUE_STOP_REASON_CSA);
7578d575
AN		 959
960 ieee80211_bss_info_change_notify(sdata, changed);
961
77fdaa12 962 out:
7578d575 963 sdata->vif.csa_active = false;
77fdaa12 964 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
8d61ffa5 965 sdata_unlock(sdata);
cc32abd4
JB		 966}
967
5ce6e438
JB		 968void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
969{
55de908a
JB		 970 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
971 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
5ce6e438
JB		 972
973 trace_api_chswitch_done(sdata, success);
974 if (!success) {
882a7c69
JB		 975 sdata_info(sdata,
976 "driver channel switch failed, disconnecting\n");
977 ieee80211_queue_work(&sdata->local->hw,
978 &ifmgd->csa_connection_drop_work);
979 } else {
980 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
5ce6e438 981 }
5ce6e438
JB		 982}
983EXPORT_SYMBOL(ieee80211_chswitch_done);
984
cc32abd4
JB		 985static void ieee80211_chswitch_timer(unsigned long data)
986{
987 struct ieee80211_sub_if_data *sdata =
988 (struct ieee80211_sub_if_data *) data;
5bb644a0 989
9b7d72c1 990 ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work);
cc32abd4
JB		 991}
992
37799e52 993static void
4a3cb702 994ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
04a161f4
JB		 995 u64 timestamp, struct ieee802_11_elems *elems,
996 bool beacon)
cc32abd4 997{
b4f286a1 998 struct ieee80211_local *local = sdata->local;
cc32abd4 999 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
37799e52 1000 struct cfg80211_bss *cbss = ifmgd->associated;
55de908a 1001 struct ieee80211_chanctx *chanctx;
e6b7cde4 1002 enum ieee80211_band current_band;
c0f17eb9 1003 struct ieee80211_csa_ie csa_ie;
e6b7cde4 1004 int res;
cc32abd4 1005
8d61ffa5 1006 sdata_assert_lock(sdata);
77fdaa12 1007
37799e52 1008 if (!cbss)
cc32abd4
JB		 1009 return;
1010
b4f286a1 1011 if (local->scanning)
cc32abd4
JB		 1012 return;
1013
37799e52 1014 /* disregard subsequent announcements if we are already processing */
cc32abd4
JB		 1015 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
1016 return;
1017
e6b7cde4 1018 current_band = cbss->channel->band;
c0f17eb9 1019 memset(&csa_ie, 0, sizeof(csa_ie));
e6b7cde4
SW		 1020 res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
1021 ifmgd->flags,
c0f17eb9 1022 ifmgd->associated->bssid, &csa_ie);
e6b7cde4 1023 if (res < 0)
b4f286a1 1024 ieee80211_queue_work(&local->hw,
882a7c69 1025 &ifmgd->csa_connection_drop_work);
e6b7cde4 1026 if (res)
cc32abd4 1027 return;
cd64f2a9 1028
c0f17eb9 1029 if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
85220d71
JB		 1030 IEEE80211_CHAN_DISABLED)) {
1031 sdata_info(sdata,
1032 "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
e6b7cde4 1033 ifmgd->associated->bssid,
c0f17eb9
CYY		 1034 csa_ie.chandef.chan->center_freq,
1035 csa_ie.chandef.width, csa_ie.chandef.center_freq1,
1036 csa_ie.chandef.center_freq2);
85220d71
JB		 1037 ieee80211_queue_work(&local->hw,
1038 &ifmgd->csa_connection_drop_work);
1039 return;
1040 }
1041
57eebdf3
JB		 1042 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
1043
7578d575 1044 mutex_lock(&local->chanctx_mtx);
b4f286a1 1045 if (local->use_chanctx) {
7578d575
AN		 1046 u32 num_chanctx = 0;
1047 list_for_each_entry(chanctx, &local->chanctx_list, list)
1048 num_chanctx++;
1049
1050 if (num_chanctx > 1 ||
1051 !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) {
1052 sdata_info(sdata,
1053 "not handling chan-switch with channel contexts\n");
1054 ieee80211_queue_work(&local->hw,
1055 &ifmgd->csa_connection_drop_work);
1056 mutex_unlock(&local->chanctx_mtx);
1057 return;
1058 }
55de908a
JB		 1059 }
1060
55de908a 1061 if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) {
7578d575
AN		 1062 ieee80211_queue_work(&local->hw,
1063 &ifmgd->csa_connection_drop_work);
b4f286a1 1064 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1065 return;
1066 }
1067 chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf),
1068 struct ieee80211_chanctx, conf);
1069 if (chanctx->refcount > 1) {
1070 sdata_info(sdata,
1071 "channel switch with multiple interfaces on the same channel, disconnecting\n");
b4f286a1 1072 ieee80211_queue_work(&local->hw,
55de908a 1073 &ifmgd->csa_connection_drop_work);
b4f286a1 1074 mutex_unlock(&local->chanctx_mtx);
55de908a
JB		 1075 return;
1076 }
b4f286a1 1077 mutex_unlock(&local->chanctx_mtx);
55de908a 1078
33787fc4 1079 sdata->csa_chandef = csa_ie.chandef;
c46a73f3 1080 sdata->vif.csa_active = true;
55de908a 1081
c0f17eb9 1082 if (csa_ie.mode)
b4f286a1 1083 ieee80211_stop_queues_by_reason(&local->hw,
445ea4e8 1084 IEEE80211_MAX_QUEUE_MAP,
57eebdf3
JB		 1085 IEEE80211_QUEUE_STOP_REASON_CSA);
1086
b4f286a1 1087 if (local->ops->channel_switch) {
5ce6e438 1088 /* use driver's channel switch callback */
57eebdf3
JB		 1089 struct ieee80211_channel_switch ch_switch = {
1090 .timestamp = timestamp,
c0f17eb9
CYY		 1091 .block_tx = csa_ie.mode,
1092 .chandef = csa_ie.chandef,
1093 .count = csa_ie.count,
57eebdf3
JB		 1094 };
1095
b4f286a1 1096 drv_channel_switch(local, &ch_switch);
5ce6e438
JB		 1097 return;
1098 }
1099
1100 /* channel switch handled in software */
c0f17eb9 1101 if (csa_ie.count <= 1)
b4f286a1 1102 ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
57eebdf3 1103 else
cc32abd4 1104 mod_timer(&ifmgd->chswitch_timer,
c0f17eb9 1105 TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
cc32abd4
JB		 1106}
1107
1ea6f9c0
JB		 1108static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
1109 struct ieee80211_channel *channel,
1110 const u8 *country_ie, u8 country_ie_len,
1111 const u8 *pwr_constr_elem)
cc32abd4 1112{
04b7b2ff
JB		 1113 struct ieee80211_country_ie_triplet *triplet;
1114 int chan = ieee80211_frequency_to_channel(channel->center_freq);
1115 int i, chan_pwr, chan_increment, new_ap_level;
1116 bool have_chan_pwr = false;
cc32abd4 1117
04b7b2ff
JB		 1118 /* Invalid IE */
1119 if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
1ea6f9c0 1120 return 0;
cc32abd4 1121
04b7b2ff
JB		 1122 triplet = (void *)(country_ie + 3);
1123 country_ie_len -= 3;
1124
1125 switch (channel->band) {
1126 default:
1127 WARN_ON_ONCE(1);
1128 /* fall through */
1129 case IEEE80211_BAND_2GHZ:
1130 case IEEE80211_BAND_60GHZ:
1131 chan_increment = 1;
1132 break;
1133 case IEEE80211_BAND_5GHZ:
1134 chan_increment = 4;
1135 break;
cc32abd4 1136 }
04b7b2ff
JB		 1137
1138 /* find channel */
1139 while (country_ie_len >= 3) {
1140 u8 first_channel = triplet->chans.first_channel;
1141
1142 if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID)
1143 goto next;
1144
1145 for (i = 0; i < triplet->chans.num_channels; i++) {
1146 if (first_channel + i * chan_increment == chan) {
1147 have_chan_pwr = true;
1148 chan_pwr = triplet->chans.max_power;
1149 break;
1150 }
1151 }
1152 if (have_chan_pwr)
1153 break;
1154
1155 next:
1156 triplet++;
1157 country_ie_len -= 3;
1158 }
1159
1160 if (!have_chan_pwr)
1ea6f9c0 1161 return 0;
04b7b2ff
JB		 1162
1163 new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem);
1164
1ea6f9c0
JB		 1165 if (sdata->ap_power_level == new_ap_level)
1166 return 0;
04b7b2ff
JB		 1167
1168 sdata_info(sdata,
1169 "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n",
1170 new_ap_level, chan_pwr, *pwr_constr_elem,
1171 sdata->u.mgd.bssid);
1ea6f9c0
JB		 1172 sdata->ap_power_level = new_ap_level;
1173 if (__ieee80211_recalc_txpower(sdata))
1174 return BSS_CHANGED_TXPOWER;
1175 return 0;
cc32abd4
JB		 1176}
1177
965bedad
JB		 1178/* powersave */
1179static void ieee80211_enable_ps(struct ieee80211_local *local,
1180 struct ieee80211_sub_if_data *sdata)
1181{
1182 struct ieee80211_conf *conf = &local->hw.conf;
1183
d5edaedc
JB		 1184 /*
1185 * If we are scanning right now then the parameters will
1186 * take effect when scan finishes.
1187 */
fbe9c429 1188 if (local->scanning)
d5edaedc
JB		 1189 return;
1190
965bedad
JB		 1191 if (conf->dynamic_ps_timeout > 0 &&
1192 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
1193 mod_timer(&local->dynamic_ps_timer, jiffies +
1194 msecs_to_jiffies(conf->dynamic_ps_timeout));
1195 } else {
1196 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1197 ieee80211_send_nullfunc(local, sdata, 1);
375177bf 1198
2a13052f
JO		 1199 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
1200 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
1201 return;
1202
1203 conf->flags |= IEEE80211_CONF_PS;
1204 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
965bedad
JB		 1205 }
1206}
1207
1208static void ieee80211_change_ps(struct ieee80211_local *local)
1209{
1210 struct ieee80211_conf *conf = &local->hw.conf;
1211
1212 if (local->ps_sdata) {
965bedad
JB		 1213 ieee80211_enable_ps(local, local->ps_sdata);
1214 } else if (conf->flags & IEEE80211_CONF_PS) {
1215 conf->flags &= ~IEEE80211_CONF_PS;
1216 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1217 del_timer_sync(&local->dynamic_ps_timer);
1218 cancel_work_sync(&local->dynamic_ps_enable_work);
1219 }
1220}
1221
808118cb
JY		 1222static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata)
1223{
1224 struct ieee80211_if_managed *mgd = &sdata->u.mgd;
1225 struct sta_info *sta = NULL;
c2c98fde 1226 bool authorized = false;
808118cb
JY		 1227
1228 if (!mgd->powersave)
1229 return false;
1230
05cb9108
JB		 1231 if (mgd->broken_ap)
1232 return false;
1233
808118cb
JY		 1234 if (!mgd->associated)
1235 return false;
1236
392b9ffb 1237 if (mgd->flags & IEEE80211_STA_CONNECTION_POLL)
808118cb
JY		 1238 return false;
1239
989c6505 1240 if (!mgd->have_beacon)
ce857888
AB		 1241 return false;
1242
808118cb
JY		 1243 rcu_read_lock();
1244 sta = sta_info_get(sdata, mgd->bssid);
1245 if (sta)
c2c98fde 1246 authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
808118cb
JY		 1247 rcu_read_unlock();
1248
c2c98fde 1249 return authorized;
808118cb
JY		 1250}
1251
965bedad 1252/* need to hold RTNL or interface lock */
10f644a4 1253void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
965bedad
JB		 1254{
1255 struct ieee80211_sub_if_data *sdata, *found = NULL;
1256 int count = 0;
195e294d 1257 int timeout;
965bedad
JB		 1258
1259 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
1260 local->ps_sdata = NULL;
1261 return;
1262 }
1263
1264 list_for_each_entry(sdata, &local->interfaces, list) {
9607e6b6 1265 if (!ieee80211_sdata_running(sdata))
965bedad 1266 continue;
8c7914de
RM		 1267 if (sdata->vif.type == NL80211_IFTYPE_AP) {
1268 /* If an AP vif is found, then disable PS
1269 * by setting the count to zero thereby setting
1270 * ps_sdata to NULL.
1271 */
1272 count = 0;
1273 break;
1274 }
965bedad
JB		 1275 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1276 continue;
1277 found = sdata;
1278 count++;
1279 }
1280
808118cb 1281 if (count == 1 && ieee80211_powersave_allowed(found)) {
10f644a4
JB		 1282 s32 beaconint_us;
1283
1284 if (latency < 0)
ed77134b 1285 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
10f644a4
JB		 1286
1287 beaconint_us = ieee80211_tu_to_usec(
1288 found->vif.bss_conf.beacon_int);
1289
ff616381 1290 timeout = local->dynamic_ps_forced_timeout;
195e294d
JO		 1291 if (timeout < 0) {
1292 /*
ff616381
JO		 1293 * Go to full PSM if the user configures a very low
1294 * latency requirement.
0ab82b04
EP		 1295 * The 2000 second value is there for compatibility
1296 * until the PM_QOS_NETWORK_LATENCY is configured
1297 * with real values.
195e294d 1298 */
0ab82b04
EP		 1299 if (latency > (1900 * USEC_PER_MSEC) &&
1300 latency != (2000 * USEC_PER_SEC))
195e294d 1301 timeout = 0;
ff616381
JO		 1302 else
1303 timeout = 100;
195e294d 1304 }
09b85568 1305 local->hw.conf.dynamic_ps_timeout = timeout;
195e294d 1306
04fe2037 1307 if (beaconint_us > latency) {
10f644a4 1308 local->ps_sdata = NULL;
04fe2037 1309 } else {
04fe2037 1310 int maxslp = 1;
826262c3 1311 u8 dtimper = found->u.mgd.dtim_period;
56007a02
JB		 1312
1313 /* If the TIM IE is invalid, pretend the value is 1 */
1314 if (!dtimper)
1315 dtimper = 1;
1316 else if (dtimper > 1)
04fe2037
JB		 1317 maxslp = min_t(int, dtimper,
1318 latency / beaconint_us);
1319
9ccebe61 1320 local->hw.conf.max_sleep_period = maxslp;
56007a02 1321 local->hw.conf.ps_dtim_period = dtimper;
10f644a4 1322 local->ps_sdata = found;
04fe2037 1323 }
10f644a4 1324 } else {
965bedad 1325 local->ps_sdata = NULL;
10f644a4 1326 }
965bedad
JB		 1327
1328 ieee80211_change_ps(local);
1329}
1330
ab095877
EP		 1331void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata)
1332{
1333 bool ps_allowed = ieee80211_powersave_allowed(sdata);
1334
1335 if (sdata->vif.bss_conf.ps != ps_allowed) {
1336 sdata->vif.bss_conf.ps = ps_allowed;
1337 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS);
1338 }
1339}
1340
965bedad
JB		 1341void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
1342{
1343 struct ieee80211_local *local =
1344 container_of(work, struct ieee80211_local,
1345 dynamic_ps_disable_work);
1346
1347 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1348 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1349 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1350 }
1351
1352 ieee80211_wake_queues_by_reason(&local->hw,
445ea4e8 1353 IEEE80211_MAX_QUEUE_MAP,
965bedad
JB		 1354 IEEE80211_QUEUE_STOP_REASON_PS);
1355}
1356
1357void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
1358{
1359 struct ieee80211_local *local =
1360 container_of(work, struct ieee80211_local,
1361 dynamic_ps_enable_work);
1362 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
5e34069c 1363 struct ieee80211_if_managed *ifmgd;
1ddc2867
RM		 1364 unsigned long flags;
1365 int q;
965bedad
JB		 1366
1367 /* can only happen when PS was just disabled anyway */
1368 if (!sdata)
1369 return;
1370
5e34069c
CL		 1371 ifmgd = &sdata->u.mgd;
1372
965bedad
JB		 1373 if (local->hw.conf.flags & IEEE80211_CONF_PS)
1374 return;
1375
09b85568 1376 if (local->hw.conf.dynamic_ps_timeout > 0) {
77b7023a
AN		 1377 /* don't enter PS if TX frames are pending */
1378 if (drv_tx_frames_pending(local)) {
1ddc2867
RM		 1379 mod_timer(&local->dynamic_ps_timer, jiffies +
1380 msecs_to_jiffies(
1381 local->hw.conf.dynamic_ps_timeout));
1382 return;
1383 }
77b7023a
AN		 1384
1385 /*
1386 * transmission can be stopped by others which leads to
1387 * dynamic_ps_timer expiry. Postpone the ps timer if it
1388 * is not the actual idle state.
1389 */
1390 spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
1391 for (q = 0; q < local->hw.queues; q++) {
1392 if (local->queue_stop_reasons[q]) {
1393 spin_unlock_irqrestore(&local->queue_stop_reason_lock,
1394 flags);
1395 mod_timer(&local->dynamic_ps_timer, jiffies +
1396 msecs_to_jiffies(
1397 local->hw.conf.dynamic_ps_timeout));
1398 return;
1399 }
1400 }
1401 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
1ddc2867 1402 }
1ddc2867 1403
375177bf 1404 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
9c38a8b4 1405 !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
a1598383 1406 if (drv_tx_frames_pending(local)) {
e8306f98
VN		 1407 mod_timer(&local->dynamic_ps_timer, jiffies +
1408 msecs_to_jiffies(
1409 local->hw.conf.dynamic_ps_timeout));
a1598383 1410 } else {
e8306f98
VN		 1411 ieee80211_send_nullfunc(local, sdata, 1);
1412 /* Flush to get the tx status of nullfunc frame */
39ecc01d 1413 ieee80211_flush_queues(local, sdata);
e8306f98 1414 }
f3e85b9e
VN		 1415 }
1416
2a13052f
JO		 1417 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
1418 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
375177bf
VN		 1419 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
1420 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
1421 local->hw.conf.flags |= IEEE80211_CONF_PS;
1422 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1423 }
965bedad
JB		 1424}
1425
1426void ieee80211_dynamic_ps_timer(unsigned long data)
1427{
1428 struct ieee80211_local *local = (void *) data;
1429
78f1a8b7 1430 if (local->quiescing || local->suspended)
5bb644a0
JB		 1431 return;
1432
42935eca 1433 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
965bedad
JB		 1434}
1435
164eb02d
SW		 1436void ieee80211_dfs_cac_timer_work(struct work_struct *work)
1437{
1438 struct delayed_work *delayed_work =
1439 container_of(work, struct delayed_work, work);
1440 struct ieee80211_sub_if_data *sdata =
1441 container_of(delayed_work, struct ieee80211_sub_if_data,
1442 dfs_cac_timer_work);
d2859df5 1443 struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
164eb02d 1444
34a3740d
JB		 1445 mutex_lock(&sdata->local->mtx);
1446 if (sdata->wdev.cac_started) {
1447 ieee80211_vif_release_channel(sdata);
1448 cfg80211_cac_event(sdata->dev, &chandef,
1449 NL80211_RADAR_CAC_FINISHED,
1450 GFP_KERNEL);
1451 }
1452 mutex_unlock(&sdata->local->mtx);
164eb02d
SW		 1453}
1454
60f8b39c 1455/* MLME */
7d25745d 1456static bool ieee80211_sta_wmm_params(struct ieee80211_local *local,
4ced3f74 1457 struct ieee80211_sub_if_data *sdata,
4a3cb702 1458 const u8 *wmm_param, size_t wmm_param_len)
f0706e82 1459{
f0706e82 1460 struct ieee80211_tx_queue_params params;
4ced3f74 1461 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 1462 size_t left;
1463 int count;
4a3cb702
JB		 1464 const u8 *pos;
1465 u8 uapsd_queues = 0;
f0706e82 1466
e1b3ec1a 1467 if (!local->ops->conf_tx)
7d25745d 1468 return false;
e1b3ec1a 1469
32c5057b 1470 if (local->hw.queues < IEEE80211_NUM_ACS)
7d25745d 1471 return false;
3434fbd3
JB		 1472
1473 if (!wmm_param)
7d25745d 1474 return false;
3434fbd3 1475
f0706e82 1476 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
7d25745d 1477 return false;
ab13315a
KV		 1478
1479 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
dc41e4d4 1480 uapsd_queues = ifmgd->uapsd_queues;
ab13315a 1481
f0706e82 1482 count = wmm_param[6] & 0x0f;
46900298 1483 if (count == ifmgd->wmm_last_param_set)
7d25745d 1484 return false;
46900298 1485 ifmgd->wmm_last_param_set = count;
f0706e82
JB		 1486
1487 pos = wmm_param + 8;
1488 left = wmm_param_len - 8;
1489
1490 memset(&params, 0, sizeof(params));
1491
00e96dec 1492 sdata->wmm_acm = 0;
f0706e82
JB		 1493 for (; left >= 4; left -= 4, pos += 4) {
1494 int aci = (pos[0] >> 5) & 0x03;
1495 int acm = (pos[0] >> 4) & 0x01;
ab13315a 1496 bool uapsd = false;
f0706e82
JB		 1497 int queue;
1498
1499 switch (aci) {
0eeb59fe 1500 case 1: /* AC_BK */
e100bb64 1501 queue = 3;
988c0f72 1502 if (acm)
00e96dec 1503 sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
ab13315a
KV		 1504 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1505 uapsd = true;
f0706e82 1506 break;
0eeb59fe 1507 case 2: /* AC_VI */
e100bb64 1508 queue = 1;
988c0f72 1509 if (acm)
00e96dec 1510 sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
ab13315a
KV		 1511 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1512 uapsd = true;
f0706e82 1513 break;
0eeb59fe 1514 case 3: /* AC_VO */
e100bb64 1515 queue = 0;
988c0f72 1516 if (acm)
00e96dec 1517 sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
ab13315a
KV		 1518 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1519 uapsd = true;
f0706e82 1520 break;
0eeb59fe 1521 case 0: /* AC_BE */
f0706e82 1522 default:
e100bb64 1523 queue = 2;
988c0f72 1524 if (acm)
00e96dec 1525 sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
ab13315a
KV		 1526 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1527 uapsd = true;
f0706e82
JB		 1528 break;
1529 }
1530
1531 params.aifs = pos[0] & 0x0f;
1532 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
1533 params.cw_min = ecw2cw(pos[1] & 0x0f);
f434b2d1 1534 params.txop = get_unaligned_le16(pos + 2);
908f8d07 1535 params.acm = acm;
ab13315a
KV		 1536 params.uapsd = uapsd;
1537
bdcbd8e0
JB		 1538 mlme_dbg(sdata,
1539 "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
1540 queue, aci, acm,
1541 params.aifs, params.cw_min, params.cw_max,
1542 params.txop, params.uapsd);
f6f3def3
EP		 1543 sdata->tx_conf[queue] = params;
1544 if (drv_conf_tx(local, sdata, queue, &params))
bdcbd8e0
JB		 1545 sdata_err(sdata,
1546 "failed to set TX queue parameters for queue %d\n",
1547 queue);
f0706e82 1548 }
e1b3ec1a
SG		 1549
1550 /* enable WMM or activate new settings */
4ced3f74 1551 sdata->vif.bss_conf.qos = true;
7d25745d 1552 return true;
f0706e82
JB		 1553}
1554
925e64c3
SG		 1555static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1556{
1557 lockdep_assert_held(&sdata->local->mtx);
1558
392b9ffb 1559 sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL;
925e64c3
SG		 1560 ieee80211_run_deferred_scan(sdata->local);
1561}
1562
1563static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata)
1564{
1565 mutex_lock(&sdata->local->mtx);
1566 __ieee80211_stop_poll(sdata);
1567 mutex_unlock(&sdata->local->mtx);
1568}
1569
7a5158ef
JB		 1570static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
1571 u16 capab, bool erp_valid, u8 erp)
5628221c 1572{
bda3933a 1573 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
471b3efd 1574 u32 changed = 0;
7a5158ef
JB		 1575 bool use_protection;
1576 bool use_short_preamble;
1577 bool use_short_slot;
1578
1579 if (erp_valid) {
1580 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
1581 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
1582 } else {
1583 use_protection = false;
1584 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
1585 }
1586
1587 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
55de908a 1588 if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ)
43d35343 1589 use_short_slot = true;
5628221c 1590
471b3efd 1591 if (use_protection != bss_conf->use_cts_prot) {
471b3efd
JB		 1592 bss_conf->use_cts_prot = use_protection;
1593 changed |= BSS_CHANGED_ERP_CTS_PROT;
5628221c 1594 }
7e9ed188 1595
d43c7b37 1596 if (use_short_preamble != bss_conf->use_short_preamble) {
d43c7b37 1597 bss_conf->use_short_preamble = use_short_preamble;
471b3efd 1598 changed |= BSS_CHANGED_ERP_PREAMBLE;
7e9ed188 1599 }
d9430a32 1600
7a5158ef 1601 if (use_short_slot != bss_conf->use_short_slot) {
7a5158ef
JB		 1602 bss_conf->use_short_slot = use_short_slot;
1603 changed |= BSS_CHANGED_ERP_SLOT;
50c4afb9
JL		 1604 }
1605
1606 return changed;
1607}
1608
f698d856 1609static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
0c1ad2ca 1610 struct cfg80211_bss *cbss,
ae5eb026 1611 u32 bss_info_changed)
f0706e82 1612{
0c1ad2ca 1613 struct ieee80211_bss *bss = (void *)cbss->priv;
471b3efd 1614 struct ieee80211_local *local = sdata->local;
68542962 1615 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
d6f2da5b 1616
ae5eb026 1617 bss_info_changed |= BSS_CHANGED_ASSOC;
77fdaa12 1618 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
50ae34a2 1619 bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value);
21c0cbe7 1620
7ccc8bd7 1621 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
59c1ec2b 1622 beacon_loss_count * bss_conf->beacon_int));
7ccc8bd7 1623
0c1ad2ca
JB		 1624 sdata->u.mgd.associated = cbss;
1625 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
f0706e82 1626
17e4ec14
JM		 1627 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
1628
488dd7b5 1629 if (sdata->vif.p2p) {
9caf0364 1630 const struct cfg80211_bss_ies *ies;
488dd7b5 1631
9caf0364
JB		 1632 rcu_read_lock();
1633 ies = rcu_dereference(cbss->ies);
1634 if (ies) {
9caf0364
JB		 1635 int ret;
1636
1637 ret = cfg80211_get_p2p_attr(
1638 ies->data, ies->len,
1639 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
67baf663
JD		 1640 (u8 *) &bss_conf->p2p_noa_attr,
1641 sizeof(bss_conf->p2p_noa_attr));
9caf0364 1642 if (ret >= 2) {
67baf663
JD		 1643 sdata->u.mgd.p2p_noa_index =
1644 bss_conf->p2p_noa_attr.index;
9caf0364 1645 bss_info_changed |= BSS_CHANGED_P2P_PS;
9caf0364 1646 }
488dd7b5 1647 }
9caf0364 1648 rcu_read_unlock();
488dd7b5
JB		 1649 }
1650
b291ba11 1651 /* just to be sure */
925e64c3 1652 ieee80211_stop_poll(sdata);
b291ba11 1653
9ac19a90 1654 ieee80211_led_assoc(local, 1);
9306102e 1655
989c6505 1656 if (sdata->u.mgd.have_beacon) {
826262c3
JB		 1657 /*
1658 * If the AP is buggy we may get here with no DTIM period
1659 * known, so assume it's 1 which is the only safe assumption
1660 * in that case, although if the TIM IE is broken powersave
1661 * probably just won't work at all.
1662 */
1663 bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1;
817cee76 1664 bss_conf->beacon_rate = bss->beacon_rate;
989c6505 1665 bss_info_changed |= BSS_CHANGED_BEACON_INFO;
826262c3 1666 } else {
817cee76 1667 bss_conf->beacon_rate = NULL;
e5b900d2 1668 bss_conf->dtim_period = 0;
826262c3 1669 }
e5b900d2 1670
68542962 1671 bss_conf->assoc = 1;
9cef8737 1672
a97c13c3 1673 /* Tell the driver to monitor connection quality (if supported) */
ea086359 1674 if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
68542962 1675 bss_conf->cqm_rssi_thold)
a97c13c3
JO		 1676 bss_info_changed |= BSS_CHANGED_CQM;
1677
68542962 1678 /* Enable ARP filtering */
0f19b41e 1679 if (bss_conf->arp_addr_cnt)
68542962 1680 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
68542962 1681
ae5eb026 1682 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
f0706e82 1683
056508dc
JB		 1684 mutex_lock(&local->iflist_mtx);
1685 ieee80211_recalc_ps(local, -1);
1686 mutex_unlock(&local->iflist_mtx);
e0cb686f 1687
04ecd257 1688 ieee80211_recalc_smps(sdata);
ab095877
EP		 1689 ieee80211_recalc_ps_vif(sdata);
1690
9ac19a90 1691 netif_carrier_on(sdata->dev);
f0706e82
JB		 1692}
1693
e69e95db 1694static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
37ad3888
JB		 1695 u16 stype, u16 reason, bool tx,
1696 u8 *frame_buf)
aa458d17 1697{
46900298 1698 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
aa458d17 1699 struct ieee80211_local *local = sdata->local;
3cc5240b 1700 u32 changed = 0;
aa458d17 1701
8d61ffa5 1702 sdata_assert_lock(sdata);
77fdaa12 1703
37ad3888
JB		 1704 if (WARN_ON_ONCE(tx && !frame_buf))
1705 return;
1706
b291ba11
JB		 1707 if (WARN_ON(!ifmgd->associated))
1708 return;
1709
79543d8e
DS		 1710 ieee80211_stop_poll(sdata);
1711
77fdaa12 1712 ifmgd->associated = NULL;
aa458d17
TW		 1713 netif_carrier_off(sdata->dev);
1714
88bc40e8
EP		 1715 /*
1716 * if we want to get out of ps before disassoc (why?) we have
1717 * to do it before sending disassoc, as otherwise the null-packet
1718 * won't be valid.
1719 */
1720 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
1721 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1722 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1723 }
1724 local->ps_sdata = NULL;
1725
ab095877
EP		 1726 /* disable per-vif ps */
1727 ieee80211_recalc_ps_vif(sdata);
1728
f823981e
EP		 1729 /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */
1730 if (tx)
39ecc01d 1731 ieee80211_flush_queues(local, sdata);
f823981e 1732
37ad3888
JB		 1733 /* deauthenticate/disassociate now */
1734 if (tx || frame_buf)
88a9e31c
EP		 1735 ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype,
1736 reason, tx, frame_buf);
37ad3888
JB		 1737
1738 /* flush out frame */
1739 if (tx)
39ecc01d 1740 ieee80211_flush_queues(local, sdata);
37ad3888 1741
88a9e31c
EP		 1742 /* clear bssid only after building the needed mgmt frames */
1743 memset(ifmgd->bssid, 0, ETH_ALEN);
1744
37ad3888 1745 /* remove AP and TDLS peers */
d34ba216 1746 sta_info_flush(sdata);
37ad3888
JB		 1747
1748 /* finally reset all BSS / config parameters */
f5e5bf25
TW		 1749 changed |= ieee80211_reset_erp_info(sdata);
1750
f5e5bf25 1751 ieee80211_led_assoc(local, 0);
ae5eb026
JB		 1752 changed |= BSS_CHANGED_ASSOC;
1753 sdata->vif.bss_conf.assoc = false;
f5e5bf25 1754
67baf663
JD		 1755 ifmgd->p2p_noa_index = -1;
1756 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
1757 sizeof(sdata->vif.bss_conf.p2p_noa_attr));
488dd7b5 1758
dd5ecfea 1759 /* on the next assoc, re-program HT/VHT parameters */
ef96a842
BG		 1760 memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
1761 memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
dd5ecfea
JB		 1762 memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa));
1763 memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask));
413ad50a 1764
1ea6f9c0 1765 sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL;
a8302de9 1766
520eb820
KV		 1767 del_timer_sync(&local->dynamic_ps_timer);
1768 cancel_work_sync(&local->dynamic_ps_enable_work);
1769
68542962 1770 /* Disable ARP filtering */
0f19b41e 1771 if (sdata->vif.bss_conf.arp_addr_cnt)
68542962 1772 changed |= BSS_CHANGED_ARP_FILTER;
68542962 1773
3abead59
JB		 1774 sdata->vif.bss_conf.qos = false;
1775 changed |= BSS_CHANGED_QOS;
1776
0aaffa9b
JB		 1777 /* The BSSID (not really interesting) and HT changed */
1778 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ae5eb026 1779 ieee80211_bss_info_change_notify(sdata, changed);
8e268e47 1780
3abead59
JB		 1781 /* disassociated - set to defaults now */
1782 ieee80211_set_wmm_default(sdata, false);
1783
b9dcf712
JB		 1784 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1785 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1786 del_timer_sync(&sdata->u.mgd.timer);
1787 del_timer_sync(&sdata->u.mgd.chswitch_timer);
2d9957cc 1788
826262c3 1789 sdata->vif.bss_conf.dtim_period = 0;
817cee76
AB		 1790 sdata->vif.bss_conf.beacon_rate = NULL;
1791
989c6505 1792 ifmgd->have_beacon = false;
826262c3 1793
028e8da0 1794 ifmgd->flags = 0;
34a3740d 1795 mutex_lock(&local->mtx);
028e8da0 1796 ieee80211_vif_release_channel(sdata);
34a3740d 1797 mutex_unlock(&local->mtx);
2475b1cc
MS		 1798
1799 sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM;
aa458d17 1800}
f0706e82 1801
3cf335d5
KV		 1802void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1803 struct ieee80211_hdr *hdr)
1804{
1805 /*
1806 * We can postpone the mgd.timer whenever receiving unicast frames
1807 * from AP because we know that the connection is working both ways
1808 * at that time. But multicast frames (and hence also beacons) must
1809 * be ignored here, because we need to trigger the timer during
b291ba11
JB		 1810 * data idle periods for sending the periodic probe request to the
1811 * AP we're connected to.
3cf335d5 1812 */
b291ba11
JB		 1813 if (is_multicast_ether_addr(hdr->addr1))
1814 return;
1815
be099e82 1816 ieee80211_sta_reset_conn_monitor(sdata);
3cf335d5 1817}
f0706e82 1818
4e5ff376
FF		 1819static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1820{
1821 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
133d40f9 1822 struct ieee80211_local *local = sdata->local;
4e5ff376 1823
133d40f9 1824 mutex_lock(&local->mtx);
392b9ffb
SG		 1825 if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL))
1826 goto out;
4e5ff376 1827
925e64c3 1828 __ieee80211_stop_poll(sdata);
133d40f9
SG		 1829
1830 mutex_lock(&local->iflist_mtx);
1831 ieee80211_recalc_ps(local, -1);
1832 mutex_unlock(&local->iflist_mtx);
4e5ff376
FF		 1833
1834 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
133d40f9 1835 goto out;
4e5ff376
FF		 1836
1837 /*
1838 * We've received a probe response, but are not sure whether
1839 * we have or will be receiving any beacons or data, so let's
1840 * schedule the timers again, just in case.
1841 */
1842 ieee80211_sta_reset_beacon_monitor(sdata);
1843
1844 mod_timer(&ifmgd->conn_mon_timer,
1845 round_jiffies_up(jiffies +
1846 IEEE80211_CONNECTION_IDLE_TIME));
133d40f9 1847out:
133d40f9 1848 mutex_unlock(&local->mtx);
4e5ff376
FF		 1849}
1850
1851void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
04ac3c0e 1852 struct ieee80211_hdr *hdr, bool ack)
4e5ff376 1853{
75706d0e 1854 if (!ieee80211_is_data(hdr->frame_control))
4e5ff376
FF		 1855 return;
1856
4e5ff376
FF		 1857 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1858 sdata->u.mgd.probe_send_count > 0) {
04ac3c0e 1859 if (ack)
cab1c7fd 1860 ieee80211_sta_reset_conn_monitor(sdata);
04ac3c0e
FF		 1861 else
1862 sdata->u.mgd.nullfunc_failed = true;
4e5ff376 1863 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
cab1c7fd 1864 return;
4e5ff376 1865 }
cab1c7fd
WD		 1866
1867 if (ack)
1868 ieee80211_sta_reset_conn_monitor(sdata);
4e5ff376
FF		 1869}
1870
a43abf29
ML		 1871static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1872{
1873 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1874 const u8 *ssid;
f01a067d 1875 u8 *dst = ifmgd->associated->bssid;
180205bd 1876 u8 unicast_limit = max(1, max_probe_tries - 3);
f01a067d
LR		 1877
1878 /*
1879 * Try sending broadcast probe requests for the last three
1880 * probe requests after the first ones failed since some
1881 * buggy APs only support broadcast probe requests.
1882 */
1883 if (ifmgd->probe_send_count >= unicast_limit)
1884 dst = NULL;
a43abf29 1885
4e5ff376
FF		 1886 /*
1887 * When the hardware reports an accurate Tx ACK status, it's
1888 * better to send a nullfunc frame instead of a probe request,
1889 * as it will kick us off the AP quickly if we aren't associated
1890 * anymore. The timeout will be reset if the frame is ACKed by
1891 * the AP.
1892 */
992e68bf
SD		 1893 ifmgd->probe_send_count++;
1894
04ac3c0e
FF		 1895 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1896 ifmgd->nullfunc_failed = false;
4e5ff376 1897 ieee80211_send_nullfunc(sdata->local, sdata, 0);
04ac3c0e 1898 } else {
88c868c4
SG		 1899 int ssid_len;
1900
9caf0364 1901 rcu_read_lock();
4e5ff376 1902 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
88c868c4
SG		 1903 if (WARN_ON_ONCE(ssid == NULL))
1904 ssid_len = 0;
1905 else
1906 ssid_len = ssid[1];
1907
1908 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL,
1672c0e3 1909 0, (u32) -1, true, 0,
55de908a 1910 ifmgd->associated->channel, false);
9caf0364 1911 rcu_read_unlock();
4e5ff376 1912 }
a43abf29 1913
180205bd 1914 ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms);
8d61ffa5 1915 run_again(sdata, ifmgd->probe_timeout);
f69b9c79 1916 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
39ecc01d 1917 ieee80211_flush_queues(sdata->local, sdata);
a43abf29
ML		 1918}
1919
b291ba11
JB		 1920static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1921 bool beacon)
04de8381 1922{
04de8381 1923 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
b291ba11 1924 bool already = false;
34bfc411 1925
9607e6b6 1926 if (!ieee80211_sdata_running(sdata))
0e2b6286
JB		 1927 return;
1928
8d61ffa5 1929 sdata_lock(sdata);
77fdaa12
JB		 1930
1931 if (!ifmgd->associated)
1932 goto out;
1933
133d40f9
SG		 1934 mutex_lock(&sdata->local->mtx);
1935
1936 if (sdata->local->tmp_channel || sdata->local->scanning) {
1937 mutex_unlock(&sdata->local->mtx);
1938 goto out;
1939 }
1940
a13fbe54 1941 if (beacon) {
bdcbd8e0 1942 mlme_dbg_ratelimited(sdata,
59c1ec2b
BG		 1943 "detected beacon loss from AP (missed %d beacons) - probing\n",
1944 beacon_loss_count);
bdcbd8e0 1945
a13fbe54
BG		 1946 ieee80211_cqm_rssi_notify(&sdata->vif,
1947 NL80211_CQM_RSSI_BEACON_LOSS_EVENT,
1948 GFP_KERNEL);
1949 }
04de8381 1950
b291ba11
JB		 1951 /*
1952 * The driver/our work has already reported this event or the
1953 * connection monitoring has kicked in and we have already sent
1954 * a probe request. Or maybe the AP died and the driver keeps
1955 * reporting until we disassociate...
1956 *
1957 * In either case we have to ignore the current call to this
1958 * function (except for setting the correct probe reason bit)
1959 * because otherwise we would reset the timer every time and
1960 * never check whether we received a probe response!
1961 */
392b9ffb 1962 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)
b291ba11
JB		 1963 already = true;
1964
12b5f34d
EP		 1965 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
1966
133d40f9
SG		 1967 mutex_unlock(&sdata->local->mtx);
1968
b291ba11
JB		 1969 if (already)
1970 goto out;
1971
4e751843
JB		 1972 mutex_lock(&sdata->local->iflist_mtx);
1973 ieee80211_recalc_ps(sdata->local, -1);
1974 mutex_unlock(&sdata->local->iflist_mtx);
1975
a43abf29
ML		 1976 ifmgd->probe_send_count = 0;
1977 ieee80211_mgd_probe_ap_send(sdata);
77fdaa12 1978 out:
8d61ffa5 1979 sdata_unlock(sdata);
04de8381
KV		 1980}
1981
a619a4c0
JO		 1982struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
1983 struct ieee80211_vif *vif)
1984{
1985 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1986 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
d9b3b28b 1987 struct cfg80211_bss *cbss;
a619a4c0
JO		 1988 struct sk_buff *skb;
1989 const u8 *ssid;
88c868c4 1990 int ssid_len;
a619a4c0
JO		 1991
1992 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1993 return NULL;
1994
8d61ffa5 1995 sdata_assert_lock(sdata);
a619a4c0 1996
d9b3b28b
EP		 1997 if (ifmgd->associated)
1998 cbss = ifmgd->associated;
1999 else if (ifmgd->auth_data)
2000 cbss = ifmgd->auth_data->bss;
2001 else if (ifmgd->assoc_data)
2002 cbss = ifmgd->assoc_data->bss;
2003 else
a619a4c0
JO		 2004 return NULL;
2005
9caf0364 2006 rcu_read_lock();
d9b3b28b 2007 ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID);
88c868c4
SG		 2008 if (WARN_ON_ONCE(ssid == NULL))
2009 ssid_len = 0;
2010 else
2011 ssid_len = ssid[1];
2012
d9b3b28b 2013 skb = ieee80211_build_probe_req(sdata, cbss->bssid,
55de908a 2014 (u32) -1, cbss->channel,
6b77863b 2015 ssid + 2, ssid_len,
85a237fe 2016 NULL, 0, true);
9caf0364 2017 rcu_read_unlock();
a619a4c0
JO		 2018
2019 return skb;
2020}
2021EXPORT_SYMBOL(ieee80211_ap_probereq_get);
2022
eef9e54c 2023static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata)
1e4dcd01
JO		 2024{
2025 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 2026 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
1e4dcd01 2027
8d61ffa5 2028 sdata_lock(sdata);
1e4dcd01 2029 if (!ifmgd->associated) {
8d61ffa5 2030 sdata_unlock(sdata);
1e4dcd01
JO		 2031 return;
2032 }
2033
37ad3888
JB		 2034 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
2035 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
eef9e54c 2036 true, frame_buf);
882a7c69 2037 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
7578d575 2038 sdata->vif.csa_active = false;
5b36ebd8 2039 ieee80211_wake_queues_by_reason(&sdata->local->hw,
445ea4e8 2040 IEEE80211_MAX_QUEUE_MAP,
5b36ebd8 2041 IEEE80211_QUEUE_STOP_REASON_CSA);
7da7cc1d 2042
6ff57cf8
JB		 2043 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
2044 IEEE80211_DEAUTH_FRAME_LEN);
8d61ffa5 2045 sdata_unlock(sdata);
1e4dcd01
JO		 2046}
2047
cc74c0c7 2048static void ieee80211_beacon_connection_loss_work(struct work_struct *work)
b291ba11
JB		 2049{
2050 struct ieee80211_sub_if_data *sdata =
2051 container_of(work, struct ieee80211_sub_if_data,
1e4dcd01 2052 u.mgd.beacon_connection_loss_work);
a85e1d55
PS		 2053 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2054 struct sta_info *sta;
2055
2056 if (ifmgd->associated) {
30fa9047 2057 rcu_read_lock();
a85e1d55
PS		 2058 sta = sta_info_get(sdata, ifmgd->bssid);
2059 if (sta)
2060 sta->beacon_loss_count++;
30fa9047 2061 rcu_read_unlock();
a85e1d55 2062 }
b291ba11 2063
682bd38b 2064 if (ifmgd->connection_loss) {
882a7c69
JB		 2065 sdata_info(sdata, "Connection to AP %pM lost\n",
2066 ifmgd->bssid);
eef9e54c 2067 __ieee80211_disconnect(sdata);
882a7c69 2068 } else {
1e4dcd01 2069 ieee80211_mgd_probe_ap(sdata, true);
882a7c69
JB		 2070 }
2071}
2072
2073static void ieee80211_csa_connection_drop_work(struct work_struct *work)
2074{
2075 struct ieee80211_sub_if_data *sdata =
2076 container_of(work, struct ieee80211_sub_if_data,
2077 u.mgd.csa_connection_drop_work);
2078
eef9e54c 2079 __ieee80211_disconnect(sdata);
b291ba11
JB		 2080}
2081
04de8381
KV		 2082void ieee80211_beacon_loss(struct ieee80211_vif *vif)
2083{
2084 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1e4dcd01 2085 struct ieee80211_hw *hw = &sdata->local->hw;
04de8381 2086
b5878a2d
JB		 2087 trace_api_beacon_loss(sdata);
2088
682bd38b 2089 sdata->u.mgd.connection_loss = false;
1e4dcd01 2090 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
04de8381
KV		 2091}
2092EXPORT_SYMBOL(ieee80211_beacon_loss);
2093
1e4dcd01
JO		 2094void ieee80211_connection_loss(struct ieee80211_vif *vif)
2095{
2096 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2097 struct ieee80211_hw *hw = &sdata->local->hw;
2098
b5878a2d
JB		 2099 trace_api_connection_loss(sdata);
2100
682bd38b 2101 sdata->u.mgd.connection_loss = true;
1e4dcd01
JO		 2102 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
2103}
2104EXPORT_SYMBOL(ieee80211_connection_loss);
2105
2106
66e67e41
JB		 2107static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
2108 bool assoc)
2109{
2110 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2111
8d61ffa5 2112 sdata_assert_lock(sdata);
66e67e41 2113
66e67e41
JB		 2114 if (!assoc) {
2115 sta_info_destroy_addr(sdata, auth_data->bss->bssid);
2116
2117 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2118 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2119 sdata->u.mgd.flags = 0;
34a3740d 2120 mutex_lock(&sdata->local->mtx);
55de908a 2121 ieee80211_vif_release_channel(sdata);
34a3740d 2122 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2123 }
2124
5b112d3d 2125 cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss);
66e67e41
JB		 2126 kfree(auth_data);
2127 sdata->u.mgd.auth_data = NULL;
2128}
2129
2130static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
2131 struct ieee80211_mgmt *mgmt, size_t len)
2132{
1672c0e3 2133 struct ieee80211_local *local = sdata->local;
66e67e41
JB		 2134 struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
2135 u8 *pos;
2136 struct ieee802_11_elems elems;
1672c0e3 2137 u32 tx_flags = 0;
66e67e41
JB		 2138
2139 pos = mgmt->u.auth.variable;
b2e506bf 2140 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2141 if (!elems.challenge)
2142 return;
2143 auth_data->expected_transaction = 4;
a1845fc7 2144 drv_mgd_prepare_tx(sdata->local, sdata);
1672c0e3
JB		 2145 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
2146 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
2147 IEEE80211_TX_INTFL_MLME_CONN_TX;
700e8ea6 2148 ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0,
66e67e41
JB		 2149 elems.challenge - 2, elems.challenge_len + 2,
2150 auth_data->bss->bssid, auth_data->bss->bssid,
2151 auth_data->key, auth_data->key_len,
1672c0e3 2152 auth_data->key_idx, tx_flags);
66e67e41
JB		 2153}
2154
8d61ffa5
JB		 2155static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
2156 struct ieee80211_mgmt *mgmt, size_t len)
66e67e41
JB		 2157{
2158 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2159 u8 bssid[ETH_ALEN];
2160 u16 auth_alg, auth_transaction, status_code;
2161 struct sta_info *sta;
2162
8d61ffa5 2163 sdata_assert_lock(sdata);
66e67e41
JB		 2164
2165 if (len < 24 + 6)
8d61ffa5 2166 return;
66e67e41
JB		 2167
2168 if (!ifmgd->auth_data || ifmgd->auth_data->done)
8d61ffa5 2169 return;
66e67e41
JB		 2170
2171 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
2172
b203ca39 2173 if (!ether_addr_equal(bssid, mgmt->bssid))
8d61ffa5 2174 return;
66e67e41
JB		 2175
2176 auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
2177 auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
2178 status_code = le16_to_cpu(mgmt->u.auth.status_code);
2179
2180 if (auth_alg != ifmgd->auth_data->algorithm ||
0f4126e8
JM		 2181 auth_transaction != ifmgd->auth_data->expected_transaction) {
2182 sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n",
2183 mgmt->sa, auth_alg, ifmgd->auth_data->algorithm,
2184 auth_transaction,
2185 ifmgd->auth_data->expected_transaction);
8d61ffa5 2186 return;
0f4126e8 2187 }
66e67e41
JB		 2188
2189 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2190 sdata_info(sdata, "%pM denied authentication (status %d)\n",
2191 mgmt->sa, status_code);
dac211ec 2192 ieee80211_destroy_auth_data(sdata, false);
6ff57cf8 2193 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2194 return;
66e67e41
JB		 2195 }
2196
2197 switch (ifmgd->auth_data->algorithm) {
2198 case WLAN_AUTH_OPEN:
2199 case WLAN_AUTH_LEAP:
2200 case WLAN_AUTH_FT:
6b8ece3a 2201 case WLAN_AUTH_SAE:
66e67e41
JB		 2202 break;
2203 case WLAN_AUTH_SHARED_KEY:
2204 if (ifmgd->auth_data->expected_transaction != 4) {
2205 ieee80211_auth_challenge(sdata, mgmt, len);
2206 /* need another frame */
8d61ffa5 2207 return;
66e67e41
JB		 2208 }
2209 break;
2210 default:
2211 WARN_ONCE(1, "invalid auth alg %d",
2212 ifmgd->auth_data->algorithm);
8d61ffa5 2213 return;
66e67e41
JB		 2214 }
2215
bdcbd8e0 2216 sdata_info(sdata, "authenticated\n");
66e67e41
JB		 2217 ifmgd->auth_data->done = true;
2218 ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
89afe614 2219 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2220 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2221
6b8ece3a
JM		 2222 if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
2223 ifmgd->auth_data->expected_transaction != 2) {
2224 /*
2225 * Report auth frame to user space for processing since another
2226 * round of Authentication frames is still needed.
2227 */
6ff57cf8 2228 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2229 return;
6b8ece3a
JM		 2230 }
2231
66e67e41
JB		 2232 /* move station state to auth */
2233 mutex_lock(&sdata->local->sta_mtx);
2234 sta = sta_info_get(sdata, bssid);
2235 if (!sta) {
2236 WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
2237 goto out_err;
2238 }
2239 if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
bdcbd8e0 2240 sdata_info(sdata, "failed moving %pM to auth\n", bssid);
66e67e41
JB		 2241 goto out_err;
2242 }
2243 mutex_unlock(&sdata->local->sta_mtx);
2244
6ff57cf8 2245 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
8d61ffa5 2246 return;
66e67e41
JB		 2247 out_err:
2248 mutex_unlock(&sdata->local->sta_mtx);
2249 /* ignore frame -- wait for timeout */
66e67e41
JB		 2250}
2251
dfa1ad29
CO		 2252#define case_WLAN(type) \
2253 case WLAN_REASON_##type: return #type
2254
2255static const char *ieee80211_get_reason_code_string(u16 reason_code)
2256{
2257 switch (reason_code) {
2258 case_WLAN(UNSPECIFIED);
2259 case_WLAN(PREV_AUTH_NOT_VALID);
2260 case_WLAN(DEAUTH_LEAVING);
2261 case_WLAN(DISASSOC_DUE_TO_INACTIVITY);
2262 case_WLAN(DISASSOC_AP_BUSY);
2263 case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA);
2264 case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA);
2265 case_WLAN(DISASSOC_STA_HAS_LEFT);
2266 case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH);
2267 case_WLAN(DISASSOC_BAD_POWER);
2268 case_WLAN(DISASSOC_BAD_SUPP_CHAN);
2269 case_WLAN(INVALID_IE);
2270 case_WLAN(MIC_FAILURE);
2271 case_WLAN(4WAY_HANDSHAKE_TIMEOUT);
2272 case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT);
2273 case_WLAN(IE_DIFFERENT);
2274 case_WLAN(INVALID_GROUP_CIPHER);
2275 case_WLAN(INVALID_PAIRWISE_CIPHER);
2276 case_WLAN(INVALID_AKMP);
2277 case_WLAN(UNSUPP_RSN_VERSION);
2278 case_WLAN(INVALID_RSN_IE_CAP);
2279 case_WLAN(IEEE8021X_FAILED);
2280 case_WLAN(CIPHER_SUITE_REJECTED);
2281 case_WLAN(DISASSOC_UNSPECIFIED_QOS);
2282 case_WLAN(DISASSOC_QAP_NO_BANDWIDTH);
2283 case_WLAN(DISASSOC_LOW_ACK);
2284 case_WLAN(DISASSOC_QAP_EXCEED_TXOP);
2285 case_WLAN(QSTA_LEAVE_QBSS);
2286 case_WLAN(QSTA_NOT_USE);
2287 case_WLAN(QSTA_REQUIRE_SETUP);
2288 case_WLAN(QSTA_TIMEOUT);
2289 case_WLAN(QSTA_CIPHER_NOT_SUPP);
2290 case_WLAN(MESH_PEER_CANCELED);
2291 case_WLAN(MESH_MAX_PEERS);
2292 case_WLAN(MESH_CONFIG);
2293 case_WLAN(MESH_CLOSE);
2294 case_WLAN(MESH_MAX_RETRIES);
2295 case_WLAN(MESH_CONFIRM_TIMEOUT);
2296 case_WLAN(MESH_INVALID_GTK);
2297 case_WLAN(MESH_INCONSISTENT_PARAM);
2298 case_WLAN(MESH_INVALID_SECURITY);
2299 case_WLAN(MESH_PATH_ERROR);
2300 case_WLAN(MESH_PATH_NOFORWARD);
2301 case_WLAN(MESH_PATH_DEST_UNREACHABLE);
2302 case_WLAN(MAC_EXISTS_IN_MBSS);
2303 case_WLAN(MESH_CHAN_REGULATORY);
2304 case_WLAN(MESH_CHAN);
2305 default: return "<unknown>";
2306 }
2307}
66e67e41 2308
8d61ffa5
JB		 2309static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
2310 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2311{
46900298 2312 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
77fdaa12 2313 const u8 *bssid = NULL;
f0706e82
JB		 2314 u16 reason_code;
2315
8d61ffa5 2316 sdata_assert_lock(sdata);
66e67e41 2317
f4ea83dd 2318 if (len < 24 + 2)
8d61ffa5 2319 return;
f0706e82 2320
66e67e41 2321 if (!ifmgd->associated ||
b203ca39 2322 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2323 return;
77fdaa12 2324
0c1ad2ca 2325 bssid = ifmgd->associated->bssid;
f0706e82
JB		 2326
2327 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
2328
dfa1ad29
CO		 2329 sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n",
2330 bssid, reason_code, ieee80211_get_reason_code_string(reason_code));
77fdaa12 2331
37ad3888
JB		 2332 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2333
6ff57cf8 2334 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2335}
2336
2337
8d61ffa5
JB		 2338static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
2339 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2340{
46900298 2341 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
f0706e82
JB		 2342 u16 reason_code;
2343
8d61ffa5 2344 sdata_assert_lock(sdata);
77fdaa12 2345
66e67e41 2346 if (len < 24 + 2)
8d61ffa5 2347 return;
77fdaa12 2348
66e67e41 2349 if (!ifmgd->associated ||
b203ca39 2350 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2351 return;
f0706e82
JB		 2352
2353 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
2354
bdcbd8e0
JB		 2355 sdata_info(sdata, "disassociated from %pM (Reason: %u)\n",
2356 mgmt->sa, reason_code);
f0706e82 2357
37ad3888
JB		 2358 ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
2359
6ff57cf8 2360 cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
f0706e82
JB		 2361}
2362
c74d084f
CL		 2363static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
2364 u8 *supp_rates, unsigned int supp_rates_len,
2365 u32 *rates, u32 *basic_rates,
2366 bool *have_higher_than_11mbit,
2103dec1
SW		 2367 int *min_rate, int *min_rate_index,
2368 int shift, u32 rate_flags)
c74d084f
CL		 2369{
2370 int i, j;
2371
2372 for (i = 0; i < supp_rates_len; i++) {
2103dec1 2373 int rate = supp_rates[i] & 0x7f;
c74d084f
CL		 2374 bool is_basic = !!(supp_rates[i] & 0x80);
2375
2103dec1 2376 if ((rate * 5 * (1 << shift)) > 110)
c74d084f
CL		 2377 *have_higher_than_11mbit = true;
2378
2379 /*
2380 * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009
2381 * 7.3.2.2 as a magic value instead of a rate. Hence, skip it.
2382 *
2383 * Note: Even through the membership selector and the basic
2384 * rate flag share the same bit, they are not exactly
2385 * the same.
2386 */
2387 if (!!(supp_rates[i] & 0x80) &&
2388 (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
2389 continue;
2390
2391 for (j = 0; j < sband->n_bitrates; j++) {
2103dec1
SW		 2392 struct ieee80211_rate *br;
2393 int brate;
2394
2395 br = &sband->bitrates[j];
2396 if ((rate_flags & br->flags) != rate_flags)
2397 continue;
2398
2399 brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5);
2400 if (brate == rate) {
c74d084f
CL		 2401 *rates |= BIT(j);
2402 if (is_basic)
2403 *basic_rates |= BIT(j);
2103dec1
SW		 2404 if ((rate * 5) < *min_rate) {
2405 *min_rate = rate * 5;
c74d084f
CL		 2406 *min_rate_index = j;
2407 }
2408 break;
2409 }
2410 }
2411 }
2412}
f0706e82 2413
66e67e41
JB		 2414static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
2415 bool assoc)
2416{
2417 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
2418
8d61ffa5 2419 sdata_assert_lock(sdata);
66e67e41 2420
66e67e41
JB		 2421 if (!assoc) {
2422 sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
2423
2424 memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
2425 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
028e8da0 2426 sdata->u.mgd.flags = 0;
34a3740d 2427 mutex_lock(&sdata->local->mtx);
55de908a 2428 ieee80211_vif_release_channel(sdata);
34a3740d 2429 mutex_unlock(&sdata->local->mtx);
66e67e41
JB		 2430 }
2431
2432 kfree(assoc_data);
2433 sdata->u.mgd.assoc_data = NULL;
2434}
2435
2436static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
2437 struct cfg80211_bss *cbss,
af6b6374 2438 struct ieee80211_mgmt *mgmt, size_t len)
f0706e82 2439{
46900298 2440 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
471b3efd 2441 struct ieee80211_local *local = sdata->local;
8318d78a 2442 struct ieee80211_supported_band *sband;
f0706e82 2443 struct sta_info *sta;
af6b6374 2444 u8 *pos;
af6b6374 2445 u16 capab_info, aid;
f0706e82 2446 struct ieee802_11_elems elems;
bda3933a 2447 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
35d865af
JB		 2448 const struct cfg80211_bss_ies *bss_ies = NULL;
2449 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
ae5eb026 2450 u32 changed = 0;
c74d084f 2451 int err;
35d865af 2452 bool ret;
f0706e82 2453
af6b6374 2454 /* AssocResp and ReassocResp have identical structure */
f0706e82 2455
f0706e82 2456 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
af6b6374 2457 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
f0706e82 2458
1dd84aa2 2459 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
bdcbd8e0
JB		 2460 sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n",
2461 aid);
1dd84aa2
JB		 2462 aid &= ~(BIT(15) | BIT(14));
2463
05cb9108
JB		 2464 ifmgd->broken_ap = false;
2465
2466 if (aid == 0 || aid > IEEE80211_MAX_AID) {
bdcbd8e0
JB		 2467 sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n",
2468 aid);
05cb9108
JB		 2469 aid = 0;
2470 ifmgd->broken_ap = true;
2471 }
2472
af6b6374 2473 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2474 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
af6b6374 2475
f0706e82 2476 if (!elems.supp_rates) {
bdcbd8e0 2477 sdata_info(sdata, "no SuppRates element in AssocResp\n");
af6b6374 2478 return false;
f0706e82
JB		 2479 }
2480
46900298 2481 ifmgd->aid = aid;
f0706e82 2482
35d865af
JB		 2483 /*
2484 * Some APs are erroneously not including some information in their
2485 * (re)association response frames. Try to recover by using the data
2486 * from the beacon or probe response. This seems to afflict mobile
2487 * 2G/3G/4G wifi routers, reported models include the "Onda PN51T",
2488 * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device.
2489 */
2490 if ((assoc_data->wmm && !elems.wmm_param) ||
2491 (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2492 (!elems.ht_cap_elem || !elems.ht_operation)) ||
2493 (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2494 (!elems.vht_cap_elem || !elems.vht_operation))) {
2495 const struct cfg80211_bss_ies *ies;
2496 struct ieee802_11_elems bss_elems;
2497
2498 rcu_read_lock();
2499 ies = rcu_dereference(cbss->ies);
2500 if (ies)
2501 bss_ies = kmemdup(ies, sizeof(*ies) + ies->len,
2502 GFP_ATOMIC);
2503 rcu_read_unlock();
2504 if (!bss_ies)
2505 return false;
2506
2507 ieee802_11_parse_elems(bss_ies->data, bss_ies->len,
2508 false, &bss_elems);
2509 if (assoc_data->wmm &&
2510 !elems.wmm_param && bss_elems.wmm_param) {
2511 elems.wmm_param = bss_elems.wmm_param;
2512 sdata_info(sdata,
2513 "AP bug: WMM param missing from AssocResp\n");
2514 }
2515
2516 /*
2517 * Also check if we requested HT/VHT, otherwise the AP doesn't
2518 * have to include the IEs in the (re)association response.
2519 */
2520 if (!elems.ht_cap_elem && bss_elems.ht_cap_elem &&
2521 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2522 elems.ht_cap_elem = bss_elems.ht_cap_elem;
2523 sdata_info(sdata,
2524 "AP bug: HT capability missing from AssocResp\n");
2525 }
2526 if (!elems.ht_operation && bss_elems.ht_operation &&
2527 !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) {
2528 elems.ht_operation = bss_elems.ht_operation;
2529 sdata_info(sdata,
2530 "AP bug: HT operation missing from AssocResp\n");
2531 }
2532 if (!elems.vht_cap_elem && bss_elems.vht_cap_elem &&
2533 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2534 elems.vht_cap_elem = bss_elems.vht_cap_elem;
2535 sdata_info(sdata,
2536 "AP bug: VHT capa missing from AssocResp\n");
2537 }
2538 if (!elems.vht_operation && bss_elems.vht_operation &&
2539 !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) {
2540 elems.vht_operation = bss_elems.vht_operation;
2541 sdata_info(sdata,
2542 "AP bug: VHT operation missing from AssocResp\n");
2543 }
2544 }
2545
30eb1dc2
JB		 2546 /*
2547 * We previously checked these in the beacon/probe response, so
2548 * they should be present here. This is just a safety net.
2549 */
2550 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
2551 (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) {
2552 sdata_info(sdata,
35d865af
JB		 2553 "HT AP is missing WMM params or HT capability/operation\n");
2554 ret = false;
2555 goto out;
30eb1dc2
JB		 2556 }
2557
2558 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
2559 (!elems.vht_cap_elem || !elems.vht_operation)) {
2560 sdata_info(sdata,
35d865af
JB		 2561 "VHT AP is missing VHT capability/operation\n");
2562 ret = false;
2563 goto out;
30eb1dc2
JB		 2564 }
2565
2a33bee2
GE		 2566 mutex_lock(&sdata->local->sta_mtx);
2567 /*
2568 * station info was already allocated and inserted before
2569 * the association and should be available to us
2570 */
7852e361 2571 sta = sta_info_get(sdata, cbss->bssid);
2a33bee2
GE		 2572 if (WARN_ON(!sta)) {
2573 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2574 ret = false;
2575 goto out;
77fdaa12 2576 }
05e5e883 2577
55de908a 2578 sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
f709fc69 2579
30eb1dc2 2580 /* Set up internal HT/VHT capabilities */
a8243b72 2581 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT))
ef96a842 2582 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
e1a0c6b3 2583 elems.ht_cap_elem, sta);
64f68e5d 2584
818255ea
MP		 2585 if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
2586 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
4a34215e 2587 elems.vht_cap_elem, sta);
818255ea 2588
30eb1dc2
JB		 2589 /*
2590 * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data
2591 * in their association response, so ignore that data for our own
2592 * configuration. If it changed since the last beacon, we'll get the
2593 * next beacon and update then.
2594 */
1128958d 2595
bee7f586
JB		 2596 /*
2597 * If an operating mode notification IE is present, override the
2598 * NSS calculation (that would be done in rate_control_rate_init())
2599 * and use the # of streams from that element.
2600 */
2601 if (elems.opmode_notif &&
2602 !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) {
2603 u8 nss;
2604
2605 nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK;
2606 nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT;
2607 nss += 1;
2608 sta->sta.rx_nss = nss;
2609 }
2610
4b7679a5 2611 rate_control_rate_init(sta);
f0706e82 2612
46900298 2613 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
c2c98fde 2614 set_sta_flag(sta, WLAN_STA_MFP);
5394af4d 2615
ddf4ac53 2616 if (elems.wmm_param)
c2c98fde 2617 set_sta_flag(sta, WLAN_STA_WME);
ddf4ac53 2618
3e4d40fa 2619 err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
c8987876
JB		 2620 if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
2621 err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
2622 if (err) {
bdcbd8e0
JB		 2623 sdata_info(sdata,
2624 "failed to move station %pM to desired state\n",
2625 sta->sta.addr);
c8987876
JB		 2626 WARN_ON(__sta_info_destroy(sta));
2627 mutex_unlock(&sdata->local->sta_mtx);
35d865af
JB		 2628 ret = false;
2629 goto out;
c8987876
JB		 2630 }
2631
7852e361 2632 mutex_unlock(&sdata->local->sta_mtx);
ddf4ac53 2633
f2176d72
JO		 2634 /*
2635 * Always handle WMM once after association regardless
2636 * of the first value the AP uses. Setting -1 here has
2637 * that effect because the AP values is an unsigned
2638 * 4-bit value.
2639 */
2640 ifmgd->wmm_last_param_set = -1;
2641
095d81ce 2642 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param)
4ced3f74 2643 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
60f8b39c 2644 elems.wmm_param_len);
aa837e1d 2645 else
3abead59
JB		 2646 ieee80211_set_wmm_default(sdata, false);
2647 changed |= BSS_CHANGED_QOS;
f0706e82 2648
60f8b39c
JB		 2649 /* set AID and assoc capability,
2650 * ieee80211_set_associated() will tell the driver */
2651 bss_conf->aid = aid;
2652 bss_conf->assoc_capability = capab_info;
0c1ad2ca 2653 ieee80211_set_associated(sdata, cbss, changed);
f0706e82 2654
d524215f
FF		 2655 /*
2656 * If we're using 4-addr mode, let the AP know that we're
2657 * doing so, so that it can create the STA VLAN on its side
2658 */
2659 if (ifmgd->use_4addr)
2660 ieee80211_send_4addr_nullfunc(local, sdata);
2661
15b7b062 2662 /*
b291ba11
JB		 2663 * Start timer to probe the connection to the AP now.
2664 * Also start the timer that will detect beacon loss.
15b7b062 2665 */
b291ba11 2666 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
d3a910a8 2667 ieee80211_sta_reset_beacon_monitor(sdata);
15b7b062 2668
35d865af
JB		 2669 ret = true;
2670 out:
2671 kfree(bss_ies);
2672 return ret;
f0706e82
JB		 2673}
2674
8d61ffa5
JB		 2675static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
2676 struct ieee80211_mgmt *mgmt,
2677 size_t len)
66e67e41
JB		 2678{
2679 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2680 struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
2681 u16 capab_info, status_code, aid;
2682 struct ieee802_11_elems elems;
2683 u8 *pos;
2684 bool reassoc;
8d61ffa5 2685 struct cfg80211_bss *bss;
66e67e41 2686
8d61ffa5 2687 sdata_assert_lock(sdata);
66e67e41
JB		 2688
2689 if (!assoc_data)
8d61ffa5 2690 return;
b203ca39 2691 if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
8d61ffa5 2692 return;
66e67e41
JB		 2693
2694 /*
2695 * AssocResp and ReassocResp have identical structure, so process both
2696 * of them in this function.
2697 */
2698
2699 if (len < 24 + 6)
8d61ffa5 2700 return;
66e67e41
JB		 2701
2702 reassoc = ieee80211_is_reassoc_req(mgmt->frame_control);
2703 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
2704 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2705 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
2706
bdcbd8e0
JB		 2707 sdata_info(sdata,
2708 "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
2709 reassoc ? "Rea" : "A", mgmt->sa,
2710 capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14))));
66e67e41
JB		 2711
2712 pos = mgmt->u.assoc_resp.variable;
b2e506bf 2713 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems);
66e67e41
JB		 2714
2715 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY &&
79ba1d89
JB		 2716 elems.timeout_int &&
2717 elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) {
66e67e41 2718 u32 tu, ms;
79ba1d89 2719 tu = le32_to_cpu(elems.timeout_int->value);
66e67e41 2720 ms = tu * 1024 / 1000;
bdcbd8e0
JB		 2721 sdata_info(sdata,
2722 "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n",
2723 mgmt->sa, tu, ms);
66e67e41 2724 assoc_data->timeout = jiffies + msecs_to_jiffies(ms);
89afe614 2725 assoc_data->timeout_started = true;
66e67e41 2726 if (ms > IEEE80211_ASSOC_TIMEOUT)
8d61ffa5
JB		 2727 run_again(sdata, assoc_data->timeout);
2728 return;
66e67e41
JB		 2729 }
2730
8d61ffa5 2731 bss = assoc_data->bss;
66e67e41
JB		 2732
2733 if (status_code != WLAN_STATUS_SUCCESS) {
bdcbd8e0
JB		 2734 sdata_info(sdata, "%pM denied association (code=%d)\n",
2735 mgmt->sa, status_code);
66e67e41
JB		 2736 ieee80211_destroy_assoc_data(sdata, false);
2737 } else {
8d61ffa5 2738 if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) {
66e67e41 2739 /* oops -- internal error -- send timeout for now */
10a9109f 2740 ieee80211_destroy_assoc_data(sdata, false);
959867fa 2741 cfg80211_assoc_timeout(sdata->dev, bss);
8d61ffa5 2742 return;
66e67e41 2743 }
635d999f 2744 sdata_info(sdata, "associated\n");
79ebfb85
JB		 2745
2746 /*
2747 * destroy assoc_data afterwards, as otherwise an idle
2748 * recalc after assoc_data is NULL but before associated
2749 * is set can cause the interface to go idle
2750 */
2751 ieee80211_destroy_assoc_data(sdata, true);
66e67e41
JB		 2752 }
2753
6ff57cf8 2754 cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len);
66e67e41 2755}
8e3c1b77 2756
98c8fccf 2757static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
8e3c1b77 2758 struct ieee80211_mgmt *mgmt, size_t len,
98c8fccf 2759 struct ieee80211_rx_status *rx_status,
d45c4172 2760 struct ieee802_11_elems *elems)
98c8fccf
JB		 2761{
2762 struct ieee80211_local *local = sdata->local;
2763 int freq;
c2b13452 2764 struct ieee80211_bss *bss;
98c8fccf 2765 struct ieee80211_channel *channel;
56007a02 2766
8d61ffa5 2767 sdata_assert_lock(sdata);
b4f286a1 2768
1cd8e88e 2769 if (elems->ds_params)
59eb21a6
BR		 2770 freq = ieee80211_channel_to_frequency(elems->ds_params[0],
2771 rx_status->band);
98c8fccf
JB		 2772 else
2773 freq = rx_status->freq;
2774
2775 channel = ieee80211_get_channel(local->hw.wiphy, freq);
2776
2777 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
2778 return;
2779
98c8fccf 2780 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
d45c4172 2781 channel);
817cee76 2782 if (bss) {
817cee76 2783 sdata->vif.bss_conf.beacon_rate = bss->beacon_rate;
d2722f8b 2784 ieee80211_rx_bss_put(local, bss);
817cee76 2785 }
f0706e82
JB		 2786}
2787
2788
f698d856 2789static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
af6b6374 2790 struct sk_buff *skb)
f0706e82 2791{
af6b6374 2792 struct ieee80211_mgmt *mgmt = (void *)skb->data;
15b7b062 2793 struct ieee80211_if_managed *ifmgd;
af6b6374
JB		 2794 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
2795 size_t baselen, len = skb->len;
ae6a44e3
EK		 2796 struct ieee802_11_elems elems;
2797
15b7b062
KV		 2798 ifmgd = &sdata->u.mgd;
2799
8d61ffa5 2800 sdata_assert_lock(sdata);
77fdaa12 2801
b203ca39 2802 if (!ether_addr_equal(mgmt->da, sdata->vif.addr))
8e7cdbb6
TW		 2803 return; /* ignore ProbeResp to foreign address */
2804
ae6a44e3
EK		 2805 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
2806 if (baselen > len)
2807 return;
2808
2809 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
b2e506bf 2810 false, &elems);
ae6a44e3 2811
d45c4172 2812 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
9859b81e 2813
77fdaa12 2814 if (ifmgd->associated &&
b203ca39 2815 ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
4e5ff376 2816 ieee80211_reset_ap_probe(sdata);
66e67e41
JB		 2817
2818 if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
b203ca39 2819 ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) {
66e67e41 2820 /* got probe response, continue with auth */
bdcbd8e0 2821 sdata_info(sdata, "direct probe responded\n");
66e67e41
JB		 2822 ifmgd->auth_data->tries = 0;
2823 ifmgd->auth_data->timeout = jiffies;
89afe614 2824 ifmgd->auth_data->timeout_started = true;
8d61ffa5 2825 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 2826 }
f0706e82
JB		 2827}
2828
d91f36db
JB		 2829/*
2830 * This is the canonical list of information elements we care about,
2831 * the filter code also gives us all changes to the Microsoft OUI
2832 * (00:50:F2) vendor IE which is used for WMM which we need to track.
2833 *
2834 * We implement beacon filtering in software since that means we can
2835 * avoid processing the frame here and in cfg80211, and userspace
2836 * will not be able to tell whether the hardware supports it or not.
2837 *
2838 * XXX: This list needs to be dynamic -- userspace needs to be able to
2839 * add items it requires. It also needs to be able to tell us to
2840 * look out for other vendor IEs.
2841 */
2842static const u64 care_about_ies =
1d4df3a5
JB		 2843 (1ULL << WLAN_EID_COUNTRY) |
2844 (1ULL << WLAN_EID_ERP_INFO) |
2845 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
2846 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
2847 (1ULL << WLAN_EID_HT_CAPABILITY) |
074d46d1 2848 (1ULL << WLAN_EID_HT_OPERATION);
d91f36db 2849
8d61ffa5
JB		 2850static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
2851 struct ieee80211_mgmt *mgmt, size_t len,
2852 struct ieee80211_rx_status *rx_status)
f0706e82 2853{
d91f36db 2854 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
17e4ec14 2855 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
f0706e82
JB		 2856 size_t baselen;
2857 struct ieee802_11_elems elems;
f698d856 2858 struct ieee80211_local *local = sdata->local;
55de908a
JB		 2859 struct ieee80211_chanctx_conf *chanctx_conf;
2860 struct ieee80211_channel *chan;
bee7f586 2861 struct sta_info *sta;
471b3efd 2862 u32 changed = 0;
f87ad637 2863 bool erp_valid;
7a5158ef 2864 u8 erp_value = 0;
d91f36db 2865 u32 ncrc;
77fdaa12 2866 u8 *bssid;
8d61ffa5 2867 u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
77fdaa12 2868
8d61ffa5 2869 sdata_assert_lock(sdata);
f0706e82 2870
ae6a44e3
EK		 2871 /* Process beacon from the current BSS */
2872 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
2873 if (baselen > len)
8d61ffa5 2874 return;
ae6a44e3 2875
55de908a
JB		 2876 rcu_read_lock();
2877 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2878 if (!chanctx_conf) {
2879 rcu_read_unlock();
8d61ffa5 2880 return;
55de908a
JB		 2881 }
2882
4bf88530 2883 if (rx_status->freq != chanctx_conf->def.chan->center_freq) {
55de908a 2884 rcu_read_unlock();
8d61ffa5 2885 return;
55de908a 2886 }
4bf88530 2887 chan = chanctx_conf->def.chan;
55de908a 2888 rcu_read_unlock();
f0706e82 2889
c65dd147 2890 if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
b203ca39 2891 ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) {
66e67e41 2892 ieee802_11_parse_elems(mgmt->u.beacon.variable,
b2e506bf 2893 len - baselen, false, &elems);
77fdaa12 2894
d45c4172 2895 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
482a9c74
AB		 2896 if (elems.tim && !elems.parse_error) {
2897 const struct ieee80211_tim_ie *tim_ie = elems.tim;
2898 ifmgd->dtim_period = tim_ie->dtim_period;
2899 }
989c6505 2900 ifmgd->have_beacon = true;
c65dd147 2901 ifmgd->assoc_data->need_beacon = false;
ef429dad
JB		 2902 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
2903 sdata->vif.bss_conf.sync_tsf =
2904 le64_to_cpu(mgmt->u.beacon.timestamp);
2905 sdata->vif.bss_conf.sync_device_ts =
2906 rx_status->device_timestamp;
2907 if (elems.tim)
2908 sdata->vif.bss_conf.sync_dtim_count =
2909 elems.tim->dtim_count;
2910 else
2911 sdata->vif.bss_conf.sync_dtim_count = 0;
2912 }
66e67e41
JB		 2913 /* continue assoc process */
2914 ifmgd->assoc_data->timeout = jiffies;
89afe614 2915 ifmgd->assoc_data->timeout_started = true;
8d61ffa5
JB		 2916 run_again(sdata, ifmgd->assoc_data->timeout);
2917 return;
66e67e41 2918 }
77fdaa12 2919
66e67e41 2920 if (!ifmgd->associated ||
b203ca39 2921 !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid))
8d61ffa5 2922 return;
66e67e41 2923 bssid = ifmgd->associated->bssid;
f0706e82 2924
17e4ec14
JM		 2925 /* Track average RSSI from the Beacon frames of the current AP */
2926 ifmgd->last_beacon_signal = rx_status->signal;
2927 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
2928 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
3ba06c6f 2929 ifmgd->ave_beacon_signal = rx_status->signal * 16;
17e4ec14 2930 ifmgd->last_cqm_event_signal = 0;
391a200a 2931 ifmgd->count_beacon_signal = 1;
615f7b9b 2932 ifmgd->last_ave_beacon_signal = 0;
17e4ec14
JM		 2933 } else {
2934 ifmgd->ave_beacon_signal =
2935 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
2936 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
2937 ifmgd->ave_beacon_signal) / 16;
391a200a 2938 ifmgd->count_beacon_signal++;
17e4ec14 2939 }
615f7b9b
MV		 2940
2941 if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold &&
2942 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) {
2943 int sig = ifmgd->ave_beacon_signal;
2944 int last_sig = ifmgd->last_ave_beacon_signal;
2945
2946 /*
2947 * if signal crosses either of the boundaries, invoke callback
2948 * with appropriate parameters
2949 */
2950 if (sig > ifmgd->rssi_max_thold &&
2951 (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) {
2952 ifmgd->last_ave_beacon_signal = sig;
887da917 2953 drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH);
615f7b9b
MV		 2954 } else if (sig < ifmgd->rssi_min_thold &&
2955 (last_sig >= ifmgd->rssi_max_thold ||
2956 last_sig == 0)) {
2957 ifmgd->last_ave_beacon_signal = sig;
887da917 2958 drv_rssi_callback(local, sdata, RSSI_EVENT_LOW);
615f7b9b
MV		 2959 }
2960 }
2961
17e4ec14 2962 if (bss_conf->cqm_rssi_thold &&
391a200a 2963 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
ea086359 2964 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) {
17e4ec14
JM		 2965 int sig = ifmgd->ave_beacon_signal / 16;
2966 int last_event = ifmgd->last_cqm_event_signal;
2967 int thold = bss_conf->cqm_rssi_thold;
2968 int hyst = bss_conf->cqm_rssi_hyst;
2969 if (sig < thold &&
2970 (last_event == 0 || sig < last_event - hyst)) {
2971 ifmgd->last_cqm_event_signal = sig;
2972 ieee80211_cqm_rssi_notify(
2973 &sdata->vif,
2974 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
2975 GFP_KERNEL);
2976 } else if (sig > thold &&
2977 (last_event == 0 || sig > last_event + hyst)) {
2978 ifmgd->last_cqm_event_signal = sig;
2979 ieee80211_cqm_rssi_notify(
2980 &sdata->vif,
2981 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
2982 GFP_KERNEL);
2983 }
2984 }
2985
392b9ffb 2986 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) {
bdcbd8e0 2987 mlme_dbg_ratelimited(sdata,
112c31f0 2988 "cancelling AP probe due to a received beacon\n");
392b9ffb 2989 ieee80211_reset_ap_probe(sdata);
92778180
JM		 2990 }
2991
b291ba11
JB		 2992 /*
2993 * Push the beacon loss detection into the future since
2994 * we are processing a beacon from the AP just now.
2995 */
d3a910a8 2996 ieee80211_sta_reset_beacon_monitor(sdata);
b291ba11 2997
d91f36db
JB		 2998 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
2999 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
b2e506bf 3000 len - baselen, false, &elems,
d91f36db
JB		 3001 care_about_ies, ncrc);
3002
25c9c875 3003 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
f87ad637
RR		 3004 bool directed_tim = ieee80211_check_tim(elems.tim,
3005 elems.tim_len,
3006 ifmgd->aid);
1fb3606b 3007 if (directed_tim) {
572e0012 3008 if (local->hw.conf.dynamic_ps_timeout > 0) {
70b12f26
RW		 3009 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
3010 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
3011 ieee80211_hw_config(local,
3012 IEEE80211_CONF_CHANGE_PS);
3013 }
572e0012 3014 ieee80211_send_nullfunc(local, sdata, 0);
6f0756a3 3015 } else if (!local->pspolling && sdata->u.mgd.powersave) {
572e0012
KV		 3016 local->pspolling = true;
3017
3018 /*
3019 * Here is assumed that the driver will be
3020 * able to send ps-poll frame and receive a
3021 * response even though power save mode is
3022 * enabled, but some drivers might require
3023 * to disable power save here. This needs
3024 * to be investigated.
3025 */
3026 ieee80211_send_pspoll(local, sdata);
3027 }
a97b77b9
VN		 3028 }
3029 }
7a5158ef 3030
488dd7b5 3031 if (sdata->vif.p2p) {
67baf663 3032 struct ieee80211_p2p_noa_attr noa = {};
488dd7b5
JB		 3033 int ret;
3034
3035 ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
3036 len - baselen,
3037 IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
934457ee 3038 (u8 *) &noa, sizeof(noa));
67baf663
JD		 3039 if (ret >= 2) {
3040 if (sdata->u.mgd.p2p_noa_index != noa.index) {
3041 /* valid noa_attr and index changed */
3042 sdata->u.mgd.p2p_noa_index = noa.index;
3043 memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa));
3044 changed |= BSS_CHANGED_P2P_PS;
3045 /*
3046 * make sure we update all information, the CRC
3047 * mechanism doesn't look at P2P attributes.
3048 */
3049 ifmgd->beacon_crc_valid = false;
3050 }
3051 } else if (sdata->u.mgd.p2p_noa_index != -1) {
3052 /* noa_attr not found and we had valid noa_attr before */
3053 sdata->u.mgd.p2p_noa_index = -1;
3054 memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr));
488dd7b5 3055 changed |= BSS_CHANGED_P2P_PS;
488dd7b5
JB		 3056 ifmgd->beacon_crc_valid = false;
3057 }
3058 }
3059
d8ec4433 3060 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
8d61ffa5 3061 return;
30196673 3062 ifmgd->beacon_crc = ncrc;
d8ec4433 3063 ifmgd->beacon_crc_valid = true;
30196673 3064
d45c4172 3065 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems);
7d25745d 3066
d70b7616
JB		 3067 ieee80211_sta_process_chanswitch(sdata, rx_status->mactime,
3068 &elems, true);
3069
095d81ce
JB		 3070 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) &&
3071 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
7d25745d
JB		 3072 elems.wmm_param_len))
3073 changed |= BSS_CHANGED_QOS;
3074
c65dd147
EG		 3075 /*
3076 * If we haven't had a beacon before, tell the driver about the
ef429dad 3077 * DTIM period (and beacon timing if desired) now.
c65dd147 3078 */
989c6505 3079 if (!ifmgd->have_beacon) {
c65dd147
EG		 3080 /* a few bogus AP send dtim_period = 0 or no TIM IE */
3081 if (elems.tim)
3082 bss_conf->dtim_period = elems.tim->dtim_period ?: 1;
3083 else
3084 bss_conf->dtim_period = 1;
ef429dad
JB		 3085
3086 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
3087 sdata->vif.bss_conf.sync_tsf =
3088 le64_to_cpu(mgmt->u.beacon.timestamp);
3089 sdata->vif.bss_conf.sync_device_ts =
3090 rx_status->device_timestamp;
3091 if (elems.tim)
3092 sdata->vif.bss_conf.sync_dtim_count =
3093 elems.tim->dtim_count;
3094 else
3095 sdata->vif.bss_conf.sync_dtim_count = 0;
3096 }
3097
989c6505
AB		 3098 changed |= BSS_CHANGED_BEACON_INFO;
3099 ifmgd->have_beacon = true;
482a9c74
AB		 3100
3101 mutex_lock(&local->iflist_mtx);
3102 ieee80211_recalc_ps(local, -1);
3103 mutex_unlock(&local->iflist_mtx);
3104
ce857888 3105 ieee80211_recalc_ps_vif(sdata);
c65dd147
EG		 3106 }
3107
1946bed9 3108 if (elems.erp_info) {
7a5158ef
JB		 3109 erp_valid = true;
3110 erp_value = elems.erp_info[0];
3111 } else {
3112 erp_valid = false;
50c4afb9 3113 }
7a5158ef
JB		 3114 changed |= ieee80211_handle_bss_capability(sdata,
3115 le16_to_cpu(mgmt->u.beacon.capab_info),
3116 erp_valid, erp_value);
f0706e82 3117
1128958d 3118 mutex_lock(&local->sta_mtx);
bee7f586
JB		 3119 sta = sta_info_get(sdata, bssid);
3120
30eb1dc2
JB		 3121 if (ieee80211_config_bw(sdata, sta, elems.ht_operation,
3122 elems.vht_operation, bssid, &changed)) {
3123 mutex_unlock(&local->sta_mtx);
3124 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
3125 WLAN_REASON_DEAUTH_LEAVING,
3126 true, deauth_buf);
6ff57cf8
JB		 3127 cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf,
3128 sizeof(deauth_buf));
8d61ffa5 3129 return;
30eb1dc2 3130 }
bee7f586
JB		 3131
3132 if (sta && elems.opmode_notif)
3133 ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif,
3134 rx_status->band, true);
1128958d 3135 mutex_unlock(&local->sta_mtx);
d3c990fb 3136
04b7b2ff
JB		 3137 if (elems.country_elem && elems.pwr_constr_elem &&
3138 mgmt->u.probe_resp.capab_info &
3139 cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT))
1ea6f9c0
JB		 3140 changed |= ieee80211_handle_pwr_constr(sdata, chan,
3141 elems.country_elem,
3142 elems.country_elem_len,
3143 elems.pwr_constr_elem);
3f2355cb 3144
471b3efd 3145 ieee80211_bss_info_change_notify(sdata, changed);
f0706e82
JB		 3146}
3147
1fa57d01
JB		 3148void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
3149 struct sk_buff *skb)
f0706e82
JB		 3150{
3151 struct ieee80211_rx_status *rx_status;
f0706e82
JB		 3152 struct ieee80211_mgmt *mgmt;
3153 u16 fc;
1b3a2e49
JB		 3154 struct ieee802_11_elems elems;
3155 int ies_len;
f0706e82 3156
f0706e82
JB		 3157 rx_status = (struct ieee80211_rx_status *) skb->cb;
3158 mgmt = (struct ieee80211_mgmt *) skb->data;
3159 fc = le16_to_cpu(mgmt->frame_control);
3160
8d61ffa5 3161 sdata_lock(sdata);
77fdaa12 3162
66e67e41
JB		 3163 switch (fc & IEEE80211_FCTL_STYPE) {
3164 case IEEE80211_STYPE_BEACON:
8d61ffa5 3165 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
66e67e41
JB		 3166 break;
3167 case IEEE80211_STYPE_PROBE_RESP:
3168 ieee80211_rx_mgmt_probe_resp(sdata, skb);
3169 break;
3170 case IEEE80211_STYPE_AUTH:
8d61ffa5 3171 ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len);
66e67e41
JB		 3172 break;
3173 case IEEE80211_STYPE_DEAUTH:
8d61ffa5 3174 ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
66e67e41
JB		 3175 break;
3176 case IEEE80211_STYPE_DISASSOC:
8d61ffa5 3177 ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
66e67e41
JB		 3178 break;
3179 case IEEE80211_STYPE_ASSOC_RESP:
3180 case IEEE80211_STYPE_REASSOC_RESP:
8d61ffa5 3181 ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len);
66e67e41
JB		 3182 break;
3183 case IEEE80211_STYPE_ACTION:
37799e52 3184 if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) {
1b3a2e49
JB		 3185 ies_len = skb->len -
3186 offsetof(struct ieee80211_mgmt,
3187 u.action.u.chan_switch.variable);
37799e52
JB		 3188
3189 if (ies_len < 0)
3190 break;
3191
3192 ieee802_11_parse_elems(
3193 mgmt->u.action.u.chan_switch.variable,
b2e506bf 3194 ies_len, true, &elems);
37799e52
JB		 3195
3196 if (elems.parse_error)
3197 break;
3198
1b3a2e49
JB		 3199 ieee80211_sta_process_chanswitch(sdata,
3200 rx_status->mactime,
04a161f4 3201 &elems, false);
1b3a2e49
JB		 3202 } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) {
3203 ies_len = skb->len -
3204 offsetof(struct ieee80211_mgmt,
3205 u.action.u.ext_chan_switch.variable);
3206
3207 if (ies_len < 0)
3208 break;
3209
3210 ieee802_11_parse_elems(
3211 mgmt->u.action.u.ext_chan_switch.variable,
b2e506bf 3212 ies_len, true, &elems);
1b3a2e49
JB		 3213
3214 if (elems.parse_error)
3215 break;
3216
3217 /* for the handling code pretend this was also an IE */
3218 elems.ext_chansw_ie =
3219 &mgmt->u.action.u.ext_chan_switch.data;
3220
66e67e41 3221 ieee80211_sta_process_chanswitch(sdata,
37799e52 3222 rx_status->mactime,
04a161f4 3223 &elems, false);
77fdaa12 3224 }
37799e52 3225 break;
77fdaa12 3226 }
8d61ffa5 3227 sdata_unlock(sdata);
f0706e82
JB		 3228}
3229
9c6bd790 3230static void ieee80211_sta_timer(unsigned long data)
f0706e82 3231{
60f8b39c
JB		 3232 struct ieee80211_sub_if_data *sdata =
3233 (struct ieee80211_sub_if_data *) data;
5bb644a0 3234
9b7d72c1 3235 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
f0706e82
JB		 3236}
3237
04ac3c0e 3238static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
6b684db1 3239 u8 *bssid, u8 reason, bool tx)
04ac3c0e 3240{
6ae16775 3241 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
04ac3c0e 3242
37ad3888 3243 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason,
6b684db1 3244 tx, frame_buf);
37ad3888 3245
6ff57cf8
JB		 3246 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
3247 IEEE80211_DEAUTH_FRAME_LEN);
04ac3c0e
FF		 3248}
3249
66e67e41
JB		 3250static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata)
3251{
3252 struct ieee80211_local *local = sdata->local;
3253 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3254 struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data;
1672c0e3 3255 u32 tx_flags = 0;
66e67e41 3256
8d61ffa5 3257 sdata_assert_lock(sdata);
66e67e41
JB		 3258
3259 if (WARN_ON_ONCE(!auth_data))
3260 return -EINVAL;
3261
66e67e41
JB		 3262 auth_data->tries++;
3263
3264 if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
bdcbd8e0
JB		 3265 sdata_info(sdata, "authentication with %pM timed out\n",
3266 auth_data->bss->bssid);
66e67e41
JB		 3267
3268 /*
3269 * Most likely AP is not in the range so remove the
3270 * bss struct for that AP.
3271 */
3272 cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss);
3273
3274 return -ETIMEDOUT;
3275 }
3276
a1845fc7
JB		 3277 drv_mgd_prepare_tx(local, sdata);
3278
66e67e41 3279 if (auth_data->bss->proberesp_ies) {
6b8ece3a
JM		 3280 u16 trans = 1;
3281 u16 status = 0;
3282
bdcbd8e0
JB		 3283 sdata_info(sdata, "send auth to %pM (try %d/%d)\n",
3284 auth_data->bss->bssid, auth_data->tries,
3285 IEEE80211_AUTH_MAX_TRIES);
66e67e41
JB		 3286
3287 auth_data->expected_transaction = 2;
6b8ece3a
JM		 3288
3289 if (auth_data->algorithm == WLAN_AUTH_SAE) {
3290 trans = auth_data->sae_trans;
3291 status = auth_data->sae_status;
3292 auth_data->expected_transaction = trans;
3293 }
3294
6211dd12
SG		 3295 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
3296 tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
3297 IEEE80211_TX_INTFL_MLME_CONN_TX;
3298
6b8ece3a
JM		 3299 ieee80211_send_auth(sdata, trans, auth_data->algorithm, status,
3300 auth_data->data, auth_data->data_len,
66e67e41 3301 auth_data->bss->bssid,
1672c0e3
JB		 3302 auth_data->bss->bssid, NULL, 0, 0,
3303 tx_flags);
66e67e41
JB		 3304 } else {
3305 const u8 *ssidie;
3306
bdcbd8e0
JB		 3307 sdata_info(sdata, "direct probe to %pM (try %d/%i)\n",
3308 auth_data->bss->bssid, auth_data->tries,
3309 IEEE80211_AUTH_MAX_TRIES);
66e67e41 3310
9caf0364 3311 rcu_read_lock();
66e67e41 3312 ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID);
9caf0364
JB		 3313 if (!ssidie) {
3314 rcu_read_unlock();
66e67e41 3315 return -EINVAL;
9caf0364 3316 }
66e67e41
JB		 3317 /*
3318 * Direct probe is sent to broadcast address as some APs
3319 * will not answer to direct packet in unassociated state.
3320 */
3321 ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1],
6211dd12 3322 NULL, 0, (u32) -1, true, 0,
55de908a 3323 auth_data->bss->channel, false);
9caf0364 3324 rcu_read_unlock();
66e67e41
JB		 3325 }
3326
6211dd12 3327 if (tx_flags == 0) {
1672c0e3 3328 auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT;
cb236d2d 3329 auth_data->timeout_started = true;
8d61ffa5 3330 run_again(sdata, auth_data->timeout);
89afe614 3331 } else {
cb236d2d
JB		 3332 auth_data->timeout =
3333 round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG);
3334 auth_data->timeout_started = true;
3335 run_again(sdata, auth_data->timeout);
1672c0e3 3336 }
66e67e41
JB		 3337
3338 return 0;
3339}
3340
3341static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata)
3342{
3343 struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
3344 struct ieee80211_local *local = sdata->local;
3345
8d61ffa5 3346 sdata_assert_lock(sdata);
66e67e41 3347
66e67e41
JB		 3348 assoc_data->tries++;
3349 if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
bdcbd8e0
JB		 3350 sdata_info(sdata, "association with %pM timed out\n",
3351 assoc_data->bss->bssid);
66e67e41
JB		 3352
3353 /*
3354 * Most likely AP is not in the range so remove the
3355 * bss struct for that AP.
3356 */
3357 cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss);
3358
3359 return -ETIMEDOUT;
3360 }
3361
bdcbd8e0
JB		 3362 sdata_info(sdata, "associate with %pM (try %d/%d)\n",
3363 assoc_data->bss->bssid, assoc_data->tries,
3364 IEEE80211_ASSOC_MAX_TRIES);
66e67e41
JB		 3365 ieee80211_send_assoc(sdata);
3366
1672c0e3
JB		 3367 if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) {
3368 assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT;
89afe614 3369 assoc_data->timeout_started = true;
8d61ffa5 3370 run_again(sdata, assoc_data->timeout);
89afe614 3371 } else {
cb236d2d
JB		 3372 assoc_data->timeout =
3373 round_jiffies_up(jiffies +
3374 IEEE80211_ASSOC_TIMEOUT_LONG);
3375 assoc_data->timeout_started = true;
3376 run_again(sdata, assoc_data->timeout);
1672c0e3 3377 }
66e67e41
JB		 3378
3379 return 0;
3380}
3381
1672c0e3
JB		 3382void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
3383 __le16 fc, bool acked)
3384{
3385 struct ieee80211_local *local = sdata->local;
3386
3387 sdata->u.mgd.status_fc = fc;
3388 sdata->u.mgd.status_acked = acked;
3389 sdata->u.mgd.status_received = true;
3390
3391 ieee80211_queue_work(&local->hw, &sdata->work);
3392}
3393
1fa57d01 3394void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
9c6bd790 3395{
9c6bd790 3396 struct ieee80211_local *local = sdata->local;
1fa57d01 3397 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
9c6bd790 3398
8d61ffa5 3399 sdata_lock(sdata);
77fdaa12 3400
1672c0e3
JB		 3401 if (ifmgd->status_received) {
3402 __le16 fc = ifmgd->status_fc;
3403 bool status_acked = ifmgd->status_acked;
3404
3405 ifmgd->status_received = false;
3406 if (ifmgd->auth_data &&
3407 (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) {
3408 if (status_acked) {
3409 ifmgd->auth_data->timeout =
3410 jiffies + IEEE80211_AUTH_TIMEOUT_SHORT;
8d61ffa5 3411 run_again(sdata, ifmgd->auth_data->timeout);
1672c0e3
JB		 3412 } else {
3413 ifmgd->auth_data->timeout = jiffies - 1;
3414 }
89afe614 3415 ifmgd->auth_data->timeout_started = true;
1672c0e3
JB		 3416 } else if (ifmgd->assoc_data &&
3417 (ieee80211_is_assoc_req(fc) ||
3418 ieee80211_is_reassoc_req(fc))) {
3419 if (status_acked) {
3420 ifmgd->assoc_data->timeout =
3421 jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT;
8d61ffa5 3422 run_again(sdata, ifmgd->assoc_data->timeout);
1672c0e3
JB		 3423 } else {
3424 ifmgd->assoc_data->timeout = jiffies - 1;
3425 }
89afe614 3426 ifmgd->assoc_data->timeout_started = true;
1672c0e3
JB		 3427 }
3428 }
3429
89afe614 3430 if (ifmgd->auth_data && ifmgd->auth_data->timeout_started &&
66e67e41
JB		 3431 time_after(jiffies, ifmgd->auth_data->timeout)) {
3432 if (ifmgd->auth_data->done) {
3433 /*
3434 * ok ... we waited for assoc but userspace didn't,
3435 * so let's just kill the auth data
3436 */
3437 ieee80211_destroy_auth_data(sdata, false);
3438 } else if (ieee80211_probe_auth(sdata)) {
3439 u8 bssid[ETH_ALEN];
3440
3441 memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
3442
3443 ieee80211_destroy_auth_data(sdata, false);
3444
6ff57cf8 3445 cfg80211_auth_timeout(sdata->dev, bssid);
66e67e41 3446 }
89afe614 3447 } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started)
8d61ffa5 3448 run_again(sdata, ifmgd->auth_data->timeout);
66e67e41 3449
89afe614 3450 if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started &&
66e67e41 3451 time_after(jiffies, ifmgd->assoc_data->timeout)) {
989c6505 3452 if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) ||
66e67e41 3453 ieee80211_do_assoc(sdata)) {
959867fa 3454 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
66e67e41
JB		 3455
3456 ieee80211_destroy_assoc_data(sdata, false);
959867fa 3457 cfg80211_assoc_timeout(sdata->dev, bss);
66e67e41 3458 }
89afe614 3459 } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started)
8d61ffa5 3460 run_again(sdata, ifmgd->assoc_data->timeout);
66e67e41 3461
392b9ffb 3462 if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL &&
b291ba11 3463 ifmgd->associated) {
a43abf29 3464 u8 bssid[ETH_ALEN];
72a8a3ed 3465 int max_tries;
a43abf29 3466
0c1ad2ca 3467 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
4e5ff376 3468
72a8a3ed 3469 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
180205bd 3470 max_tries = max_nullfunc_tries;
72a8a3ed 3471 else
180205bd 3472 max_tries = max_probe_tries;
72a8a3ed 3473
4e5ff376
FF		 3474 /* ACK received for nullfunc probing frame */
3475 if (!ifmgd->probe_send_count)
3476 ieee80211_reset_ap_probe(sdata);
04ac3c0e
FF		 3477 else if (ifmgd->nullfunc_failed) {
3478 if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3479 mlme_dbg(sdata,
3480 "No ack for nullfunc frame to AP %pM, try %d/%i\n",
3481 bssid, ifmgd->probe_send_count,
3482 max_tries);
04ac3c0e
FF		 3483 ieee80211_mgd_probe_ap_send(sdata);
3484 } else {
bdcbd8e0
JB		 3485 mlme_dbg(sdata,
3486 "No ack for nullfunc frame to AP %pM, disconnecting.\n",
3487 bssid);
95acac61 3488 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1
JB		 3489 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
3490 false);
04ac3c0e
FF		 3491 }
3492 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
8d61ffa5 3493 run_again(sdata, ifmgd->probe_timeout);
04ac3c0e 3494 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
bdcbd8e0
JB		 3495 mlme_dbg(sdata,
3496 "Failed to send nullfunc to AP %pM after %dms, disconnecting\n",
3497 bssid, probe_wait_ms);
95acac61 3498 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3499 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
04ac3c0e 3500 } else if (ifmgd->probe_send_count < max_tries) {
bdcbd8e0
JB		 3501 mlme_dbg(sdata,
3502 "No probe response from AP %pM after %dms, try %d/%i\n",
3503 bssid, probe_wait_ms,
3504 ifmgd->probe_send_count, max_tries);
a43abf29
ML		 3505 ieee80211_mgd_probe_ap_send(sdata);
3506 } else {
b291ba11
JB		 3507 /*
3508 * We actually lost the connection ... or did we?
3509 * Let's make sure!
3510 */
b38afa87
BG		 3511 wiphy_debug(local->hw.wiphy,
3512 "%s: No probe response from AP %pM"
3513 " after %dms, disconnecting.\n",
3514 sdata->name,
180205bd 3515 bssid, probe_wait_ms);
04ac3c0e 3516
95acac61 3517 ieee80211_sta_connection_lost(sdata, bssid,
6b684db1 3518 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false);
b291ba11
JB		 3519 }
3520 }
3521
8d61ffa5 3522 sdata_unlock(sdata);
f0706e82
JB		 3523}
3524
b291ba11
JB		 3525static void ieee80211_sta_bcn_mon_timer(unsigned long data)
3526{
3527 struct ieee80211_sub_if_data *sdata =
3528 (struct ieee80211_sub_if_data *) data;
3529 struct ieee80211_local *local = sdata->local;
3530
3531 if (local->quiescing)
3532 return;
3533
682bd38b 3534 sdata->u.mgd.connection_loss = false;
1e4dcd01
JO		 3535 ieee80211_queue_work(&sdata->local->hw,
3536 &sdata->u.mgd.beacon_connection_loss_work);
b291ba11
JB		 3537}
3538
3539static void ieee80211_sta_conn_mon_timer(unsigned long data)
3540{
3541 struct ieee80211_sub_if_data *sdata =
3542 (struct ieee80211_sub_if_data *) data;
3543 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3544 struct ieee80211_local *local = sdata->local;
3545
3546 if (local->quiescing)
3547 return;
3548
42935eca 3549 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
b291ba11
JB		 3550}
3551
3552static void ieee80211_sta_monitor_work(struct work_struct *work)
3553{
3554 struct ieee80211_sub_if_data *sdata =
3555 container_of(work, struct ieee80211_sub_if_data,
3556 u.mgd.monitor_work);
3557
3558 ieee80211_mgd_probe_ap(sdata, false);
3559}
3560
9c6bd790
JB		 3561static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
3562{
494f1fe5
EP		 3563 u32 flags;
3564
ad935687 3565 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
925e64c3 3566 __ieee80211_stop_poll(sdata);
ad935687 3567
b291ba11 3568 /* let's probe the connection once */
494f1fe5
EP		 3569 flags = sdata->local->hw.flags;
3570 if (!(flags & IEEE80211_HW_CONNECTION_MONITOR))
3571 ieee80211_queue_work(&sdata->local->hw,
3572 &sdata->u.mgd.monitor_work);
b291ba11 3573 /* and do all the other regular work too */
64592c8f 3574 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
ad935687 3575 }
9c6bd790 3576}
f0706e82 3577
b8360ab8
JB		 3578#ifdef CONFIG_PM
3579void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
3580{
3581 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3582
8d61ffa5 3583 sdata_lock(sdata);
b8360ab8 3584 if (!ifmgd->associated) {
8d61ffa5 3585 sdata_unlock(sdata);
b8360ab8
JB		 3586 return;
3587 }
3588
3589 if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) {
3590 sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME;
3591 mlme_dbg(sdata, "driver requested disconnect after resume\n");
3592 ieee80211_sta_connection_lost(sdata,
3593 ifmgd->associated->bssid,
3594 WLAN_REASON_UNSPECIFIED,
3595 true);
8d61ffa5 3596 sdata_unlock(sdata);
b8360ab8
JB		 3597 return;
3598 }
8d61ffa5 3599 sdata_unlock(sdata);
b8360ab8
JB		 3600}
3601#endif
3602
9c6bd790
JB		 3603/* interface setup */
3604void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
f0706e82 3605{
46900298 3606 struct ieee80211_if_managed *ifmgd;
988c0f72 3607
46900298 3608 ifmgd = &sdata->u.mgd;
b291ba11 3609 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
46900298 3610 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
1e4dcd01
JO		 3611 INIT_WORK(&ifmgd->beacon_connection_loss_work,
3612 ieee80211_beacon_connection_loss_work);
882a7c69
JB		 3613 INIT_WORK(&ifmgd->csa_connection_drop_work,
3614 ieee80211_csa_connection_drop_work);
687da132 3615 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
46900298 3616 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
c481ec97 3617 (unsigned long) sdata);
b291ba11
JB		 3618 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
3619 (unsigned long) sdata);
3620 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
3621 (unsigned long) sdata);
46900298 3622 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
9c6bd790 3623 (unsigned long) sdata);
9c6bd790 3624
ab1faead 3625 ifmgd->flags = 0;
1478acb3 3626 ifmgd->powersave = sdata->wdev.ps;
219c3867
AB		 3627 ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues;
3628 ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len;
67baf663 3629 ifmgd->p2p_noa_index = -1;
bbbdff9e 3630
0f78231b
JB		 3631 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
3632 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
3633 else
3634 ifmgd->req_smps = IEEE80211_SMPS_OFF;
f0706e82
JB		 3635}
3636
77fdaa12
JB		 3637/* scan finished notification */
3638void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
60f8b39c 3639{
31ee67a1 3640 struct ieee80211_sub_if_data *sdata;
60f8b39c 3641
77fdaa12
JB		 3642 /* Restart STA timers */
3643 rcu_read_lock();
370bd005
BG		 3644 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
3645 if (ieee80211_sdata_running(sdata))
3646 ieee80211_restart_sta_timer(sdata);
3647 }
77fdaa12
JB		 3648 rcu_read_unlock();
3649}
60f8b39c 3650
77fdaa12
JB		 3651int ieee80211_max_network_latency(struct notifier_block *nb,
3652 unsigned long data, void *dummy)
3653{
3654 s32 latency_usec = (s32) data;
3655 struct ieee80211_local *local =
3656 container_of(nb, struct ieee80211_local,
3657 network_latency_notifier);
1fa6f4af 3658
77fdaa12
JB		 3659 mutex_lock(&local->iflist_mtx);
3660 ieee80211_recalc_ps(local, latency_usec);
3661 mutex_unlock(&local->iflist_mtx);
dfe67012 3662
77fdaa12 3663 return 0;
9c6bd790
JB		 3664}
3665
f2d9d270
JB		 3666static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata,
3667 struct cfg80211_bss *cbss)
3668{
3669 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3670 const u8 *ht_cap_ie, *vht_cap_ie;
3671 const struct ieee80211_ht_cap *ht_cap;
3672 const struct ieee80211_vht_cap *vht_cap;
3673 u8 chains = 1;
3674
3675 if (ifmgd->flags & IEEE80211_STA_DISABLE_HT)
3676 return chains;
3677
9caf0364 3678 ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
f2d9d270
JB		 3679 if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) {
3680 ht_cap = (void *)(ht_cap_ie + 2);
3681 chains = ieee80211_mcs_to_chains(&ht_cap->mcs);
3682 /*
3683 * TODO: use "Tx Maximum Number Spatial Streams Supported" and
3684 * "Tx Unequal Modulation Supported" fields.
3685 */
3686 }
3687
3688 if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT)
3689 return chains;
3690
9caf0364 3691 vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
f2d9d270
JB		 3692 if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) {
3693 u8 nss;
3694 u16 tx_mcs_map;
3695
3696 vht_cap = (void *)(vht_cap_ie + 2);
3697 tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
3698 for (nss = 8; nss > 0; nss--) {
3699 if (((tx_mcs_map >> (2 * (nss - 1))) & 3) !=
3700 IEEE80211_VHT_MCS_NOT_SUPPORTED)
3701 break;
3702 }
3703 /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */
3704 chains = max(chains, nss);
3705 }
3706
3707 return chains;
3708}
3709
b17166a7
JB		 3710static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
3711 struct cfg80211_bss *cbss)
a1cf775d
JB		 3712{
3713 struct ieee80211_local *local = sdata->local;
3714 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
24398e39 3715 const struct ieee80211_ht_operation *ht_oper = NULL;
f2d9d270 3716 const struct ieee80211_vht_operation *vht_oper = NULL;
24398e39 3717 struct ieee80211_supported_band *sband;
4bf88530 3718 struct cfg80211_chan_def chandef;
f2d9d270 3719 int ret;
a1cf775d 3720
24398e39
JB		 3721 sband = local->hw.wiphy->bands[cbss->channel->band];
3722
f2d9d270
JB		 3723 ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ |
3724 IEEE80211_STA_DISABLE_80P80MHZ |
3725 IEEE80211_STA_DISABLE_160MHZ);
3726
9caf0364
JB		 3727 rcu_read_lock();
3728
f2d9d270
JB		 3729 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) &&
3730 sband->ht_cap.ht_supported) {
08e6effa 3731 const u8 *ht_oper_ie, *ht_cap;
24398e39 3732
9caf0364 3733 ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION);
24398e39
JB		 3734 if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper))
3735 ht_oper = (void *)(ht_oper_ie + 2);
08e6effa
JB		 3736
3737 ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY);
3738 if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) {
3739 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3740 ht_oper = NULL;
3741 }
24398e39
JB		 3742 }
3743
f2d9d270
JB		 3744 if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) &&
3745 sband->vht_cap.vht_supported) {
08e6effa 3746 const u8 *vht_oper_ie, *vht_cap;
f2d9d270 3747
9caf0364
JB		 3748 vht_oper_ie = ieee80211_bss_get_ie(cbss,
3749 WLAN_EID_VHT_OPERATION);
f2d9d270
JB		 3750 if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper))
3751 vht_oper = (void *)(vht_oper_ie + 2);
3752 if (vht_oper && !ht_oper) {
3753 vht_oper = NULL;
bdcbd8e0 3754 sdata_info(sdata,
f2d9d270 3755 "AP advertised VHT without HT, disabling both\n");
cb145022
JB		 3756 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
3757 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
24398e39 3758 }
08e6effa
JB		 3759
3760 vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY);
3761 if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) {
3762 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
3763 vht_oper = NULL;
3764 }
24398e39
JB		 3765 }
3766
f2d9d270
JB		 3767 ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
3768 cbss->channel,
3769 ht_oper, vht_oper,
5cdaed1e 3770 &chandef, false);
04ecd257 3771
f2d9d270
JB		 3772 sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
3773 local->rx_chains);
24398e39 3774
9caf0364
JB		 3775 rcu_read_unlock();
3776
04ecd257
JB		 3777 /* will change later if needed */
3778 sdata->smps_mode = IEEE80211_SMPS_OFF;
3779
34a3740d 3780 mutex_lock(&local->mtx);
f2d9d270
JB		 3781 /*
3782 * If this fails (possibly due to channel context sharing
3783 * on incompatible channels, e.g. 80+80 and 160 sharing the
3784 * same control channel) try to use a smaller bandwidth.
3785 */
3786 ret = ieee80211_vif_use_channel(sdata, &chandef,
3787 IEEE80211_CHANCTX_SHARED);
0418a445
SW		 3788
3789 /* don't downgrade for 5 and 10 MHz channels, though. */
3790 if (chandef.width == NL80211_CHAN_WIDTH_5 ||
3791 chandef.width == NL80211_CHAN_WIDTH_10)
34a3740d 3792 goto out;
0418a445 3793
d601cd8d 3794 while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
e6b7cde4 3795 ifmgd->flags |= ieee80211_chandef_downgrade(&chandef);
d601cd8d
JB		 3796 ret = ieee80211_vif_use_channel(sdata, &chandef,
3797 IEEE80211_CHANCTX_SHARED);
3798 }
34a3740d
JB		 3799 out:
3800 mutex_unlock(&local->mtx);
f2d9d270 3801 return ret;
b17166a7
JB		 3802}
3803
3804static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
3805 struct cfg80211_bss *cbss, bool assoc)
3806{
3807 struct ieee80211_local *local = sdata->local;
3808 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3809 struct ieee80211_bss *bss = (void *)cbss->priv;
3810 struct sta_info *new_sta = NULL;
3811 bool have_sta = false;
3812 int err;
3813
3814 if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
3815 return -EINVAL;
3816
3817 if (assoc) {
3818 rcu_read_lock();
3819 have_sta = sta_info_get(sdata, cbss->bssid);
3820 rcu_read_unlock();
3821 }
3822
3823 if (!have_sta) {
3824 new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
3825 if (!new_sta)
3826 return -ENOMEM;
3827 }
13e0c8e3 3828 if (new_sta) {
5d6a1b06
JB		 3829 u32 rates = 0, basic_rates = 0;
3830 bool have_higher_than_11mbit;
3831 int min_rate = INT_MAX, min_rate_index = -1;
2103dec1 3832 struct ieee80211_chanctx_conf *chanctx_conf;
b17166a7 3833 struct ieee80211_supported_band *sband;
8cef2c9d 3834 const struct cfg80211_bss_ies *ies;
2103dec1
SW		 3835 int shift;
3836 u32 rate_flags;
b17166a7
JB		 3837
3838 sband = local->hw.wiphy->bands[cbss->channel->band];
3839
3840 err = ieee80211_prep_channel(sdata, cbss);
3841 if (err) {
3842 sta_info_free(local, new_sta);
2103dec1 3843 return -EINVAL;
b17166a7 3844 }
2103dec1
SW		 3845 shift = ieee80211_vif_get_shift(&sdata->vif);
3846
3847 rcu_read_lock();
3848 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3849 if (WARN_ON(!chanctx_conf)) {
3850 rcu_read_unlock();
3851 return -EINVAL;
3852 }
3853 rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def);
3854 rcu_read_unlock();
5d6a1b06 3855
5d6a1b06
JB		 3856 ieee80211_get_rates(sband, bss->supp_rates,
3857 bss->supp_rates_len,
3858 &rates, &basic_rates,
3859 &have_higher_than_11mbit,
2103dec1
SW		 3860 &min_rate, &min_rate_index,
3861 shift, rate_flags);
5d6a1b06
JB		 3862
3863 /*
3864 * This used to be a workaround for basic rates missing
3865 * in the association response frame. Now that we no
3866 * longer use the basic rates from there, it probably
3867 * doesn't happen any more, but keep the workaround so
3868 * in case some *other* APs are buggy in different ways
3869 * we can connect -- with a warning.
3870 */
3871 if (!basic_rates && min_rate_index >= 0) {
bdcbd8e0
JB		 3872 sdata_info(sdata,
3873 "No basic rates, using min rate instead\n");
5d6a1b06
JB		 3874 basic_rates = BIT(min_rate_index);
3875 }
3876
13e0c8e3 3877 new_sta->sta.supp_rates[cbss->channel->band] = rates;
5d6a1b06
JB		 3878 sdata->vif.bss_conf.basic_rates = basic_rates;
3879
3880 /* cf. IEEE 802.11 9.2.12 */
55de908a 3881 if (cbss->channel->band == IEEE80211_BAND_2GHZ &&
5d6a1b06
JB		 3882 have_higher_than_11mbit)
3883 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
3884 else
3885 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
3886
3887 memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
3888
8c358bcd
JB		 3889 /* set timing information */
3890 sdata->vif.bss_conf.beacon_int = cbss->beacon_interval;
8cef2c9d 3891 rcu_read_lock();
ef429dad
JB		 3892 ies = rcu_dereference(cbss->beacon_ies);
3893 if (ies) {
3894 const u8 *tim_ie;
3895
3896 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3897 sdata->vif.bss_conf.sync_device_ts =
3898 bss->device_ts_beacon;
3899 tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
3900 ies->data, ies->len);
3901 if (tim_ie && tim_ie[1] >= 2)
3902 sdata->vif.bss_conf.sync_dtim_count = tim_ie[2];
3903 else
3904 sdata->vif.bss_conf.sync_dtim_count = 0;
3905 } else if (!(local->hw.flags &
3906 IEEE80211_HW_TIMING_BEACON_ONLY)) {
3907 ies = rcu_dereference(cbss->proberesp_ies);
3908 /* must be non-NULL since beacon IEs were NULL */
3909 sdata->vif.bss_conf.sync_tsf = ies->tsf;
3910 sdata->vif.bss_conf.sync_device_ts =
3911 bss->device_ts_presp;
3912 sdata->vif.bss_conf.sync_dtim_count = 0;
3913 } else {
3914 sdata->vif.bss_conf.sync_tsf = 0;
3915 sdata->vif.bss_conf.sync_device_ts = 0;
3916 sdata->vif.bss_conf.sync_dtim_count = 0;
3917 }
8cef2c9d 3918 rcu_read_unlock();
8c358bcd
JB		 3919
3920 /* tell driver about BSSID, basic rates and timing */
5d6a1b06 3921 ieee80211_bss_info_change_notify(sdata,
8c358bcd
JB		 3922 BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES |
3923 BSS_CHANGED_BEACON_INT);
a1cf775d
JB		 3924
3925 if (assoc)
13e0c8e3 3926 sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH);
a1cf775d 3927
13e0c8e3
JB		 3928 err = sta_info_insert(new_sta);
3929 new_sta = NULL;
a1cf775d 3930 if (err) {
bdcbd8e0
JB		 3931 sdata_info(sdata,
3932 "failed to insert STA entry for the AP (error %d)\n",
3933 err);
a1cf775d
JB		 3934 return err;
3935 }
3936 } else
b203ca39 3937 WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid));
a1cf775d
JB		 3938
3939 return 0;
3940}
3941
77fdaa12
JB		 3942/* config hooks */
3943int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
3944 struct cfg80211_auth_request *req)
9c6bd790 3945{
66e67e41
JB		 3946 struct ieee80211_local *local = sdata->local;
3947 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3948 struct ieee80211_mgd_auth_data *auth_data;
77fdaa12 3949 u16 auth_alg;
66e67e41
JB		 3950 int err;
3951
3952 /* prepare auth data structure */
9c6bd790 3953
77fdaa12
JB		 3954 switch (req->auth_type) {
3955 case NL80211_AUTHTYPE_OPEN_SYSTEM:
3956 auth_alg = WLAN_AUTH_OPEN;
3957 break;
3958 case NL80211_AUTHTYPE_SHARED_KEY:
66e67e41 3959 if (IS_ERR(local->wep_tx_tfm))
9dca9c49 3960 return -EOPNOTSUPP;
77fdaa12
JB		 3961 auth_alg = WLAN_AUTH_SHARED_KEY;
3962 break;
3963 case NL80211_AUTHTYPE_FT:
3964 auth_alg = WLAN_AUTH_FT;
3965 break;
3966 case NL80211_AUTHTYPE_NETWORK_EAP:
3967 auth_alg = WLAN_AUTH_LEAP;
3968 break;
6b8ece3a
JM		 3969 case NL80211_AUTHTYPE_SAE:
3970 auth_alg = WLAN_AUTH_SAE;
3971 break;
77fdaa12
JB		 3972 default:
3973 return -EOPNOTSUPP;
60f8b39c 3974 }
77fdaa12 3975
6b8ece3a
JM		 3976 auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len +
3977 req->ie_len, GFP_KERNEL);
66e67e41 3978 if (!auth_data)
9c6bd790 3979 return -ENOMEM;
77fdaa12 3980
66e67e41 3981 auth_data->bss = req->bss;
77fdaa12 3982
6b8ece3a
JM		 3983 if (req->sae_data_len >= 4) {
3984 __le16 *pos = (__le16 *) req->sae_data;
3985 auth_data->sae_trans = le16_to_cpu(pos[0]);
3986 auth_data->sae_status = le16_to_cpu(pos[1]);
3987 memcpy(auth_data->data, req->sae_data + 4,
3988 req->sae_data_len - 4);
3989 auth_data->data_len += req->sae_data_len - 4;
3990 }
3991
77fdaa12 3992 if (req->ie && req->ie_len) {
6b8ece3a
JM		 3993 memcpy(&auth_data->data[auth_data->data_len],
3994 req->ie, req->ie_len);
3995 auth_data->data_len += req->ie_len;
9c6bd790 3996 }
77fdaa12 3997
fffd0934 3998 if (req->key && req->key_len) {
66e67e41
JB		 3999 auth_data->key_len = req->key_len;
4000 auth_data->key_idx = req->key_idx;
4001 memcpy(auth_data->key, req->key, req->key_len);
fffd0934
JB		 4002 }
4003
66e67e41 4004 auth_data->algorithm = auth_alg;
60f8b39c 4005
66e67e41 4006 /* try to authenticate/probe */
2a33bee2 4007
66e67e41
JB		 4008 if ((ifmgd->auth_data && !ifmgd->auth_data->done) ||
4009 ifmgd->assoc_data) {
4010 err = -EBUSY;
4011 goto err_free;
2a33bee2
GE		 4012 }
4013
66e67e41
JB		 4014 if (ifmgd->auth_data)
4015 ieee80211_destroy_auth_data(sdata, false);
2a33bee2 4016
66e67e41
JB		 4017 /* prep auth_data so we don't go into idle on disassoc */
4018 ifmgd->auth_data = auth_data;
af6b6374 4019
7b119dc0
JB		 4020 if (ifmgd->associated) {
4021 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4022
4023 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4024 WLAN_REASON_UNSPECIFIED,
4025 false, frame_buf);
4026
6ff57cf8
JB		 4027 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4028 sizeof(frame_buf));
7b119dc0 4029 }
af6b6374 4030
bdcbd8e0 4031 sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid);
e5b900d2 4032
a1cf775d
JB		 4033 err = ieee80211_prep_connection(sdata, req->bss, false);
4034 if (err)
66e67e41 4035 goto err_clear;
af6b6374 4036
66e67e41
JB		 4037 err = ieee80211_probe_auth(sdata);
4038 if (err) {
66e67e41
JB		 4039 sta_info_destroy_addr(sdata, req->bss->bssid);
4040 goto err_clear;
4041 }
4042
4043 /* hold our own reference */
5b112d3d 4044 cfg80211_ref_bss(local->hw.wiphy, auth_data->bss);
8d61ffa5 4045 return 0;
66e67e41
JB		 4046
4047 err_clear:
3d2abdfd
EP		 4048 memset(ifmgd->bssid, 0, ETH_ALEN);
4049 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4050 ifmgd->auth_data = NULL;
4051 err_free:
4052 kfree(auth_data);
66e67e41 4053 return err;
af6b6374
JB		 4054}
4055
095d81ce
JB		 4056static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata,
4057 const u8 *wmm_param, int len)
4058{
4059 const u8 *pos;
4060 size_t left;
4061
4062 if (len < 8)
4063 return false;
4064
4065 if (wmm_param[5] != 1 /* version */)
4066 return false;
4067
4068 pos = wmm_param + 8;
4069 left = len - 8;
4070
4071 for (; left >= 4; left -= 4, pos += 4) {
4072 u8 aifsn = pos[0] & 0x0f;
4073 u8 ecwmin = pos[1] & 0x0f;
4074 u8 ecwmax = (pos[1] & 0xf0) >> 4;
4075 int aci = (pos[0] >> 5) & 0x03;
4076
4077 if (aifsn < 2) {
4078 sdata_info(sdata,
4079 "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n",
4080 aifsn, aci);
4081 return false;
4082 }
4083 if (ecwmin > ecwmax) {
4084 sdata_info(sdata,
4085 "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n",
4086 ecwmin, ecwmax, aci);
4087 return false;
4088 }
4089 }
4090
4091 return true;
4092}
4093
77fdaa12
JB		 4094int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
4095 struct cfg80211_assoc_request *req)
f0706e82 4096{
66e67e41 4097 struct ieee80211_local *local = sdata->local;
77fdaa12 4098 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
0c1ad2ca 4099 struct ieee80211_bss *bss = (void *)req->bss->priv;
66e67e41 4100 struct ieee80211_mgd_assoc_data *assoc_data;
c65dd147 4101 const struct cfg80211_bss_ies *beacon_ies;
4e74bfdb 4102 struct ieee80211_supported_band *sband;
b08fbbd8 4103 const u8 *ssidie, *ht_ie, *vht_ie;
2a33bee2 4104 int i, err;
f0706e82 4105
66e67e41
JB		 4106 assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL);
4107 if (!assoc_data)
4108 return -ENOMEM;
4109
9caf0364
JB		 4110 rcu_read_lock();
4111 ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
4112 if (!ssidie) {
4113 rcu_read_unlock();
4114 kfree(assoc_data);
4115 return -EINVAL;
4116 }
4117 memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]);
4118 assoc_data->ssid_len = ssidie[1];
4119 rcu_read_unlock();
4120
7b119dc0
JB		 4121 if (ifmgd->associated) {
4122 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
4123
4124 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4125 WLAN_REASON_UNSPECIFIED,
4126 false, frame_buf);
4127
6ff57cf8
JB		 4128 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4129 sizeof(frame_buf));
7b119dc0 4130 }
66e67e41
JB		 4131
4132 if (ifmgd->auth_data && !ifmgd->auth_data->done) {
4133 err = -EBUSY;
4134 goto err_free;
af6b6374 4135 }
77fdaa12 4136
66e67e41
JB		 4137 if (ifmgd->assoc_data) {
4138 err = -EBUSY;
4139 goto err_free;
4140 }
77fdaa12 4141
66e67e41
JB		 4142 if (ifmgd->auth_data) {
4143 bool match;
4144
4145 /* keep sta info, bssid if matching */
b203ca39 4146 match = ether_addr_equal(ifmgd->bssid, req->bss->bssid);
66e67e41 4147 ieee80211_destroy_auth_data(sdata, match);
2a33bee2
GE		 4148 }
4149
66e67e41 4150 /* prepare assoc data */
095d81ce 4151
d8ec4433
JO		 4152 ifmgd->beacon_crc_valid = false;
4153
095d81ce
JB		 4154 assoc_data->wmm = bss->wmm_used &&
4155 (local->hw.queues >= IEEE80211_NUM_ACS);
4156 if (assoc_data->wmm) {
4157 /* try to check validity of WMM params IE */
4158 const struct cfg80211_bss_ies *ies;
4159 const u8 *wp, *start, *end;
4160
4161 rcu_read_lock();
4162 ies = rcu_dereference(req->bss->ies);
4163 start = ies->data;
4164 end = start + ies->len;
4165
4166 while (true) {
4167 wp = cfg80211_find_vendor_ie(
4168 WLAN_OUI_MICROSOFT,
4169 WLAN_OUI_TYPE_MICROSOFT_WMM,
4170 start, end - start);
4171 if (!wp)
4172 break;
4173 start = wp + wp[1] + 2;
4174 /* if this IE is too short, try the next */
4175 if (wp[1] <= 4)
4176 continue;
4177 /* if this IE is WMM params, we found what we wanted */
4178 if (wp[6] == 1)
4179 break;
4180 }
4181
4182 if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2,
4183 wp[1] - 2)) {
4184 assoc_data->wmm = false;
4185 ifmgd->flags |= IEEE80211_STA_DISABLE_WMM;
4186 }
4187 rcu_read_unlock();
4188 }
4189
de5036aa
JB		 4190 /*
4191 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
4192 * We still associate in non-HT mode (11a/b/g) if any one of these
4193 * ciphers is configured as pairwise.
4194 * We can set this to true for non-11n hardware, that'll be checked
4195 * separately along with the peer capabilities.
4196 */
1c4cb928 4197 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) {
77fdaa12
JB		 4198 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
4199 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
1c4cb928 4200 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) {
a8243b72 4201 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba 4202 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
1c4cb928 4203 netdev_info(sdata->dev,
d545daba 4204 "disabling HT/VHT due to WEP/TKIP use\n");
1c4cb928
JB		 4205 }
4206 }
77fdaa12 4207
d545daba 4208 if (req->flags & ASSOC_REQ_DISABLE_HT) {
a8243b72 4209 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
d545daba
MP		 4210 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4211 }
ef96a842 4212
dd5ecfea
JB		 4213 if (req->flags & ASSOC_REQ_DISABLE_VHT)
4214 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
4215
4e74bfdb
JB		 4216 /* Also disable HT if we don't support it or the AP doesn't use WMM */
4217 sband = local->hw.wiphy->bands[req->bss->channel->band];
4218 if (!sband->ht_cap.ht_supported ||
095d81ce
JB		 4219 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4220 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
a8243b72 4221 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
095d81ce
JB		 4222 if (!bss->wmm_used &&
4223 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4224 netdev_info(sdata->dev,
4225 "disabling HT as WMM/QoS is not supported by the AP\n");
1c4cb928 4226 }
4e74bfdb 4227
d545daba
MP		 4228 /* disable VHT if we don't support it or the AP doesn't use WMM */
4229 if (!sband->vht_cap.vht_supported ||
095d81ce
JB		 4230 local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used ||
4231 ifmgd->flags & IEEE80211_STA_DISABLE_WMM) {
d545daba 4232 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
095d81ce
JB		 4233 if (!bss->wmm_used &&
4234 !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM))
1b49de26
JB		 4235 netdev_info(sdata->dev,
4236 "disabling VHT as WMM/QoS is not supported by the AP\n");
d545daba
MP		 4237 }
4238
ef96a842
BG		 4239 memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa));
4240 memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask,
4241 sizeof(ifmgd->ht_capa_mask));
4242
dd5ecfea
JB		 4243 memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa));
4244 memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
4245 sizeof(ifmgd->vht_capa_mask));
4246
77fdaa12 4247 if (req->ie && req->ie_len) {
66e67e41
JB		 4248 memcpy(assoc_data->ie, req->ie, req->ie_len);
4249 assoc_data->ie_len = req->ie_len;
4250 }
f679f65d 4251
66e67e41 4252 assoc_data->bss = req->bss;
f679f65d 4253
af6b6374
JB		 4254 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
4255 if (ifmgd->powersave)
04ecd257 4256 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
af6b6374 4257 else
04ecd257 4258 sdata->smps_mode = IEEE80211_SMPS_OFF;
af6b6374 4259 } else
04ecd257 4260 sdata->smps_mode = ifmgd->req_smps;
af6b6374 4261
66e67e41 4262 assoc_data->capability = req->bss->capability;
66e67e41
JB		 4263 assoc_data->supp_rates = bss->supp_rates;
4264 assoc_data->supp_rates_len = bss->supp_rates_len;
9dde6423 4265
9caf0364 4266 rcu_read_lock();
9dde6423
JB		 4267 ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION);
4268 if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation))
4269 assoc_data->ap_ht_param =
4270 ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param;
4271 else
a8243b72 4272 ifmgd->flags |= IEEE80211_STA_DISABLE_HT;
b08fbbd8
JB		 4273 vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY);
4274 if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap))
4275 memcpy(&assoc_data->ap_vht_cap, vht_ie + 2,
4276 sizeof(struct ieee80211_vht_cap));
4277 else
4278 ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
9caf0364 4279 rcu_read_unlock();
63f170e0 4280
ab13315a 4281 if (bss->wmm_used && bss->uapsd_supported &&
24aa11ab
AB		 4282 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) &&
4283 sdata->wmm_acm != 0xff) {
76f0303d 4284 assoc_data->uapsd = true;
ab13315a
KV		 4285 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
4286 } else {
76f0303d 4287 assoc_data->uapsd = false;
ab13315a
KV		 4288 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
4289 }
4290
77fdaa12 4291 if (req->prev_bssid)
66e67e41 4292 memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN);
77fdaa12
JB		 4293
4294 if (req->use_mfp) {
4295 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
4296 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
4297 } else {
4298 ifmgd->mfp = IEEE80211_MFP_DISABLED;
4299 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
4300 }
4301
4302 if (req->crypto.control_port)
4303 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
4304 else
4305 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
4306
a621fa4d
JB		 4307 sdata->control_port_protocol = req->crypto.control_port_ethertype;
4308 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2475b1cc
MS		 4309 sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto,
4310 sdata->vif.type);
a621fa4d 4311
66e67e41
JB		 4312 /* kick off associate process */
4313
4314 ifmgd->assoc_data = assoc_data;
826262c3 4315 ifmgd->dtim_period = 0;
989c6505 4316 ifmgd->have_beacon = false;
66e67e41 4317
a1cf775d
JB		 4318 err = ieee80211_prep_connection(sdata, req->bss, true);
4319 if (err)
4320 goto err_clear;
66e67e41 4321
c65dd147
EG		 4322 rcu_read_lock();
4323 beacon_ies = rcu_dereference(req->bss->beacon_ies);
826262c3 4324
c65dd147
EG		 4325 if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC &&
4326 !beacon_ies) {
4327 /*
4328 * Wait up to one beacon interval ...
4329 * should this be more if we miss one?
4330 */
4331 sdata_info(sdata, "waiting for beacon from %pM\n",
4332 ifmgd->bssid);
4333 assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval);
89afe614 4334 assoc_data->timeout_started = true;
c65dd147
EG		 4335 assoc_data->need_beacon = true;
4336 } else if (beacon_ies) {
4337 const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM,
4338 beacon_ies->data,
4339 beacon_ies->len);
ef429dad
JB		 4340 u8 dtim_count = 0;
4341
c65dd147
EG		 4342 if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) {
4343 const struct ieee80211_tim_ie *tim;
4344 tim = (void *)(tim_ie + 2);
4345 ifmgd->dtim_period = tim->dtim_period;
ef429dad 4346 dtim_count = tim->dtim_count;
826262c3 4347 }
989c6505 4348 ifmgd->have_beacon = true;
66e67e41 4349 assoc_data->timeout = jiffies;
89afe614 4350 assoc_data->timeout_started = true;
ef429dad
JB		 4351
4352 if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) {
4353 sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf;
4354 sdata->vif.bss_conf.sync_device_ts =
4355 bss->device_ts_beacon;
4356 sdata->vif.bss_conf.sync_dtim_count = dtim_count;
4357 }
c65dd147
EG		 4358 } else {
4359 assoc_data->timeout = jiffies;
89afe614 4360 assoc_data->timeout_started = true;
66e67e41 4361 }
c65dd147
EG		 4362 rcu_read_unlock();
4363
8d61ffa5 4364 run_again(sdata, assoc_data->timeout);
66e67e41 4365
fcff4f10
PS		 4366 if (bss->corrupt_data) {
4367 char *corrupt_type = "data";
4368 if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) {
4369 if (bss->corrupt_data &
4370 IEEE80211_BSS_CORRUPT_PROBE_RESP)
4371 corrupt_type = "beacon and probe response";
4372 else
4373 corrupt_type = "beacon";
4374 } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP)
4375 corrupt_type = "probe response";
bdcbd8e0
JB		 4376 sdata_info(sdata, "associating with AP with corrupt %s\n",
4377 corrupt_type);
fcff4f10
PS		 4378 }
4379
8d61ffa5 4380 return 0;
66e67e41 4381 err_clear:
3d2abdfd
EP		 4382 memset(ifmgd->bssid, 0, ETH_ALEN);
4383 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
66e67e41
JB		 4384 ifmgd->assoc_data = NULL;
4385 err_free:
4386 kfree(assoc_data);
66e67e41 4387 return err;
f0706e82
JB		 4388}
4389
77fdaa12 4390int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4391 struct cfg80211_deauth_request *req)
f0706e82 4392{
46900298 4393 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
6ae16775 4394 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
6863255b 4395 bool tx = !req->local_state_change;
f0706e82 4396
c9c3a060
JB		 4397 if (ifmgd->auth_data &&
4398 ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) {
4399 sdata_info(sdata,
4400 "aborting authentication with %pM by local choice (Reason: %u=%s)\n",
4401 req->bssid, req->reason_code,
4402 ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4403
8c7d857c 4404 drv_mgd_prepare_tx(sdata->local, sdata);
37ad3888
JB		 4405 ieee80211_send_deauth_disassoc(sdata, req->bssid,
4406 IEEE80211_STYPE_DEAUTH,
6863255b 4407 req->reason_code, tx,
37ad3888 4408 frame_buf);
86552017 4409 ieee80211_destroy_auth_data(sdata, false);
c9c3a060
JB		 4410 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4411 IEEE80211_DEAUTH_FRAME_LEN);
86552017 4412
c9c3a060 4413 return 0;
8c7d857c
EG		 4414 }
4415
86552017
JB		 4416 if (ifmgd->associated &&
4417 ether_addr_equal(ifmgd->associated->bssid, req->bssid)) {
c9c3a060
JB		 4418 sdata_info(sdata,
4419 "deauthenticating from %pM by local choice (Reason: %u=%s)\n",
4420 req->bssid, req->reason_code,
4421 ieee80211_get_reason_code_string(req->reason_code));
4422
86552017
JB		 4423 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
4424 req->reason_code, tx, frame_buf);
6ff57cf8
JB		 4425 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4426 IEEE80211_DEAUTH_FRAME_LEN);
c9c3a060
JB		 4427 return 0;
4428 }
86552017 4429
c9c3a060 4430 return -ENOTCONN;
f0706e82 4431}
84363e6e 4432
77fdaa12 4433int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
63c9c5e7 4434 struct cfg80211_disassoc_request *req)
9c6bd790 4435{
77fdaa12 4436 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
e69e95db 4437 u8 bssid[ETH_ALEN];
6ae16775 4438 u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN];
9c6bd790 4439
8d8b261a
JB		 4440 /*
4441 * cfg80211 should catch this ... but it's racy since
4442 * we can receive a disassoc frame, process it, hand it
4443 * to cfg80211 while that's in a locked section already
4444 * trying to tell us that the user wants to disconnect.
4445 */
8d61ffa5 4446 if (ifmgd->associated != req->bss)
77fdaa12 4447 return -ENOLINK;
77fdaa12 4448
bdcbd8e0 4449 sdata_info(sdata,
dfa1ad29
CO		 4450 "disassociating from %pM by local choice (Reason: %u=%s)\n",
4451 req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code));
0ff71613 4452
e69e95db 4453 memcpy(bssid, req->bss->bssid, ETH_ALEN);
37ad3888
JB		 4454 ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC,
4455 req->reason_code, !req->local_state_change,
4456 frame_buf);
10f644a4 4457
6ff57cf8
JB		 4458 cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf,
4459 IEEE80211_DEAUTH_FRAME_LEN);
bc83b681 4460
10f644a4
JB		 4461 return 0;
4462}
026331c4 4463
afa762f6 4464void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata)
54e4ffb2
JB		 4465{
4466 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
4467
49921859
BG		 4468 /*
4469 * Make sure some work items will not run after this,
4470 * they will not do anything but might not have been
4471 * cancelled when disconnecting.
4472 */
4473 cancel_work_sync(&ifmgd->monitor_work);
4474 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
4475 cancel_work_sync(&ifmgd->request_smps_work);
4476 cancel_work_sync(&ifmgd->csa_connection_drop_work);
4477 cancel_work_sync(&ifmgd->chswitch_work);
4478
8d61ffa5 4479 sdata_lock(sdata);
959867fa
JB		 4480 if (ifmgd->assoc_data) {
4481 struct cfg80211_bss *bss = ifmgd->assoc_data->bss;
54e4ffb2 4482 ieee80211_destroy_assoc_data(sdata, false);
959867fa
JB		 4483 cfg80211_assoc_timeout(sdata->dev, bss);
4484 }
54e4ffb2
JB		 4485 if (ifmgd->auth_data)
4486 ieee80211_destroy_auth_data(sdata, false);
4487 del_timer_sync(&ifmgd->timer);
8d61ffa5 4488 sdata_unlock(sdata);
54e4ffb2
JB		 4489}
4490
a97c13c3
JO		 4491void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
4492 enum nl80211_cqm_rssi_threshold_event rssi_event,
4493 gfp_t gfp)
4494{
4495 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
4496
b5878a2d
JB		 4497 trace_api_cqm_rssi_notify(sdata, rssi_event);
4498
a97c13c3
JO		 4499 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
4500}
4501EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
ubuntu-zesty-kernel mirror