]>
Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
f0706e82 JB |
2 | /* |
3 | * BSS client mode implementation | |
5394af4d | 4 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
f0706e82 JB |
5 | * Copyright 2004, Instant802 Networks, Inc. |
6 | * Copyright 2005, Devicescape Software, Inc. | |
7 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
8 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
d98ad83e | 9 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
e38a017b | 10 | * Copyright (C) 2015 - 2017 Intel Deutschland GmbH |
2bf973ff | 11 | * Copyright (C) 2018 - 2020 Intel Corporation |
f0706e82 JB |
12 | */ |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
5fdb3735 | 15 | #include <linux/fips.h> |
f0706e82 JB |
16 | #include <linux/if_ether.h> |
17 | #include <linux/skbuff.h> | |
f0706e82 | 18 | #include <linux/if_arp.h> |
f0706e82 | 19 | #include <linux/etherdevice.h> |
d9b93842 | 20 | #include <linux/moduleparam.h> |
d0709a65 | 21 | #include <linux/rtnetlink.h> |
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" | |
39404fee | 32 | #include "fils_aead.h" |
f0706e82 | 33 | |
1672c0e3 | 34 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 35 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 | 36 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) |
407879b6 | 37 | #define IEEE80211_AUTH_TIMEOUT_SAE (HZ * 2) |
1672c0e3 JB |
38 | #define IEEE80211_AUTH_MAX_TRIES 3 |
39 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
40 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
cb236d2d | 41 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
42 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
43 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 44 | |
180205bd BG |
45 | static int max_nullfunc_tries = 2; |
46 | module_param(max_nullfunc_tries, int, 0644); | |
47 | MODULE_PARM_DESC(max_nullfunc_tries, | |
48 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
49 | ||
50 | static int max_probe_tries = 5; | |
51 | module_param(max_probe_tries, int, 0644); | |
52 | MODULE_PARM_DESC(max_probe_tries, | |
53 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
54 | |
55 | /* | |
7ccc8bd7 FF |
56 | * Beacon loss timeout is calculated as N frames times the |
57 | * advertised beacon interval. This may need to be somewhat | |
58 | * higher than what hardware might detect to account for | |
59 | * delays in the host processing frames. But since we also | |
60 | * probe on beacon miss before declaring the connection lost | |
61 | * default to what we want. | |
b291ba11 | 62 | */ |
59c1ec2b BG |
63 | static int beacon_loss_count = 7; |
64 | module_param(beacon_loss_count, int, 0644); | |
65 | MODULE_PARM_DESC(beacon_loss_count, | |
66 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 67 | |
b291ba11 JB |
68 | /* |
69 | * Time the connection can be idle before we probe | |
70 | * it to see if we can still talk to the AP. | |
71 | */ | |
d1c5091f | 72 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
73 | /* |
74 | * Time we wait for a probe response after sending | |
75 | * a probe request because of beacon loss or for | |
76 | * checking the connection still works. | |
77 | */ | |
180205bd BG |
78 | static int probe_wait_ms = 500; |
79 | module_param(probe_wait_ms, int, 0644); | |
80 | MODULE_PARM_DESC(probe_wait_ms, | |
81 | "Maximum time(ms) to wait for probe response" | |
82 | " before disconnecting (reason 4)."); | |
f0706e82 | 83 | |
391a200a JM |
84 | /* |
85 | * How many Beacon frames need to have been used in average signal strength | |
86 | * before starting to indicate signal change events. | |
87 | */ | |
88 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
89 | ||
ca386f31 JB |
90 | /* |
91 | * We can have multiple work items (and connection probing) | |
92 | * scheduling this timer, but we need to take care to only | |
93 | * reschedule it when it should fire _earlier_ than it was | |
94 | * asked for before, or if it's not pending right now. This | |
95 | * function ensures that. Note that it then is required to | |
96 | * run this function for all timeouts after the first one | |
97 | * has happened -- the work that runs from this timer will | |
98 | * do that. | |
99 | */ | |
8d61ffa5 JB |
100 | static void run_again(struct ieee80211_sub_if_data *sdata, |
101 | unsigned long timeout) | |
ca386f31 | 102 | { |
8d61ffa5 | 103 | sdata_assert_lock(sdata); |
ca386f31 | 104 | |
8d61ffa5 JB |
105 | if (!timer_pending(&sdata->u.mgd.timer) || |
106 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
107 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
108 | } |
109 | ||
d3a910a8 | 110 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 111 | { |
c1288b12 | 112 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
113 | return; |
114 | ||
30686bf7 | 115 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
7eeff74c JB |
116 | return; |
117 | ||
b291ba11 | 118 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 119 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
120 | } |
121 | ||
be099e82 LR |
122 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
123 | { | |
0c699c3a LR |
124 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
125 | ||
b100e5d6 | 126 | if (unlikely(!ifmgd->associated)) |
8628172f SG |
127 | return; |
128 | ||
b100e5d6 JB |
129 | if (ifmgd->probe_send_count) |
130 | ifmgd->probe_send_count = 0; | |
448cd2e2 | 131 | |
30686bf7 | 132 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
be099e82 LR |
133 | return; |
134 | ||
b100e5d6 | 135 | mod_timer(&ifmgd->conn_mon_timer, |
be099e82 LR |
136 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); |
137 | } | |
138 | ||
5484e237 | 139 | static int ecw2cw(int ecw) |
60f8b39c | 140 | { |
5484e237 | 141 | return (1 << ecw) - 1; |
60f8b39c JB |
142 | } |
143 | ||
6565ec9b JB |
144 | static u32 |
145 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
146 | struct ieee80211_supported_band *sband, | |
147 | struct ieee80211_channel *channel, | |
148 | const struct ieee80211_ht_operation *ht_oper, | |
149 | const struct ieee80211_vht_operation *vht_oper, | |
41cbb0f5 | 150 | const struct ieee80211_he_operation *he_oper, |
5cdaed1e | 151 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 152 | { |
5cdaed1e | 153 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b | 154 | struct cfg80211_chan_def vht_chandef; |
179b8fc7 | 155 | struct ieee80211_sta_ht_cap sta_ht_cap; |
6565ec9b JB |
156 | u32 ht_cfreq, ret; |
157 | ||
179b8fc7 CRI |
158 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); |
159 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
160 | ||
2a38075c | 161 | memset(chandef, 0, sizeof(struct cfg80211_chan_def)); |
6565ec9b JB |
162 | chandef->chan = channel; |
163 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
164 | chandef->center_freq1 = channel->center_freq; | |
6565ec9b | 165 | |
b1b1ae2c | 166 | if (!ht_oper || !sta_ht_cap.ht_supported) { |
75e296e9 JB |
167 | ret = IEEE80211_STA_DISABLE_HT | |
168 | IEEE80211_STA_DISABLE_VHT | | |
169 | IEEE80211_STA_DISABLE_HE; | |
6565ec9b JB |
170 | goto out; |
171 | } | |
172 | ||
173 | chandef->width = NL80211_CHAN_WIDTH_20; | |
174 | ||
175 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
176 | channel->band); | |
177 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 178 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
179 | /* |
180 | * It's possible that some APs are confused here; | |
181 | * Netgear WNDR3700 sometimes reports 4 higher than | |
182 | * the actual channel in association responses, but | |
183 | * since we look at probe response/beacon data here | |
184 | * it should be OK. | |
185 | */ | |
5cdaed1e JB |
186 | sdata_info(sdata, |
187 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
188 | channel->center_freq, ht_cfreq, | |
189 | ht_oper->primary_chan, channel->band); | |
75e296e9 JB |
190 | ret = IEEE80211_STA_DISABLE_HT | |
191 | IEEE80211_STA_DISABLE_VHT | | |
192 | IEEE80211_STA_DISABLE_HE; | |
6565ec9b JB |
193 | goto out; |
194 | } | |
195 | ||
196 | /* check 40 MHz support, if we have it */ | |
179b8fc7 | 197 | if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { |
8ac3c704 | 198 | ieee80211_chandef_ht_oper(ht_oper, chandef); |
6565ec9b JB |
199 | } else { |
200 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
201 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
202 | /* also mark 40 MHz disabled */ |
203 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
204 | goto out; |
205 | } | |
206 | ||
207 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
208 | ret = IEEE80211_STA_DISABLE_VHT; | |
209 | goto out; | |
210 | } | |
211 | ||
8ac3c704 | 212 | vht_chandef = *chandef; |
41cbb0f5 LC |
213 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && he_oper && |
214 | (le32_to_cpu(he_oper->he_oper_params) & | |
215 | IEEE80211_HE_OPERATION_VHT_OPER_INFO)) { | |
216 | struct ieee80211_vht_operation he_oper_vht_cap; | |
217 | ||
218 | /* | |
219 | * Set only first 3 bytes (other 2 aren't used in | |
220 | * ieee80211_chandef_vht_oper() anyway) | |
221 | */ | |
222 | memcpy(&he_oper_vht_cap, he_oper->optional, 3); | |
223 | he_oper_vht_cap.basic_mcs_set = cpu_to_le16(0); | |
224 | ||
7eb26df2 JB |
225 | if (!ieee80211_chandef_vht_oper(&sdata->local->hw, |
226 | &he_oper_vht_cap, ht_oper, | |
41cbb0f5 LC |
227 | &vht_chandef)) { |
228 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) | |
229 | sdata_info(sdata, | |
230 | "HE AP VHT information is invalid, disable HE\n"); | |
231 | ret = IEEE80211_STA_DISABLE_HE; | |
232 | goto out; | |
233 | } | |
7eb26df2 JB |
234 | } else if (!ieee80211_chandef_vht_oper(&sdata->local->hw, vht_oper, |
235 | ht_oper, &vht_chandef)) { | |
5cdaed1e | 236 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 | 237 | sdata_info(sdata, |
8ac3c704 | 238 | "AP VHT information is invalid, disable VHT\n"); |
6565ec9b JB |
239 | ret = IEEE80211_STA_DISABLE_VHT; |
240 | goto out; | |
241 | } | |
242 | ||
243 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 244 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
245 | sdata_info(sdata, |
246 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
247 | ret = IEEE80211_STA_DISABLE_VHT; |
248 | goto out; | |
249 | } | |
250 | ||
251 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
252 | ret = 0; | |
253 | goto out; | |
254 | } | |
255 | ||
256 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 257 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
258 | sdata_info(sdata, |
259 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
260 | ret = IEEE80211_STA_DISABLE_VHT; |
261 | goto out; | |
262 | } | |
263 | ||
264 | *chandef = vht_chandef; | |
265 | ||
266 | ret = 0; | |
267 | ||
268 | out: | |
963a1852 JB |
269 | /* |
270 | * When tracking the current AP, don't do any further checks if the | |
271 | * new chandef is identical to the one we're currently using for the | |
272 | * connection. This keeps us from playing ping-pong with regulatory, | |
273 | * without it the following can happen (for example): | |
274 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
275 | * - AP advertises regdom US | |
276 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
277 | * - the code below detects an unsupported channel, downgrades, and | |
278 | * we disconnect from the AP in the caller | |
279 | * - disconnect causes CRDA to reload world regdomain and the game | |
280 | * starts anew. | |
281 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
282 | * | |
283 | * It seems possible that there are still scenarios with CSA or real | |
284 | * bandwidth changes where a this could happen, but those cases are | |
285 | * less common and wouldn't completely prevent using the AP. | |
286 | */ | |
287 | if (tracking && | |
288 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
289 | return ret; | |
290 | ||
586e01ed JB |
291 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
292 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
293 | vht_chandef = *chandef; | |
294 | ||
ddfe49b4 JB |
295 | /* |
296 | * Ignore the DISABLED flag when we're already connected and only | |
297 | * tracking the APs beacon for bandwidth changes - otherwise we | |
298 | * might get disconnected here if we connect to an AP, update our | |
299 | * regulatory information based on the AP's country IE and the | |
300 | * information we have is wrong/outdated and disables the channel | |
301 | * that we're actually using for the connection to the AP. | |
302 | */ | |
6565ec9b | 303 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
304 | tracking ? 0 : |
305 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
306 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
307 | ret = IEEE80211_STA_DISABLE_HT | | |
75e296e9 JB |
308 | IEEE80211_STA_DISABLE_VHT | |
309 | IEEE80211_STA_DISABLE_HE; | |
b56e4b85 | 310 | break; |
6565ec9b JB |
311 | } |
312 | ||
e6b7cde4 | 313 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
314 | } |
315 | ||
8cadb207 DG |
316 | if (!he_oper || !cfg80211_chandef_usable(sdata->wdev.wiphy, chandef, |
317 | IEEE80211_CHAN_NO_HE)) | |
b5db1aca HD |
318 | ret |= IEEE80211_STA_DISABLE_HE; |
319 | ||
5cdaed1e | 320 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
321 | sdata_info(sdata, |
322 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
323 | ||
324 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
325 | return ret; | |
326 | } | |
327 | ||
30eb1dc2 JB |
328 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
329 | struct sta_info *sta, | |
53b954ee | 330 | const struct ieee80211_ht_cap *ht_cap, |
30eb1dc2 JB |
331 | const struct ieee80211_ht_operation *ht_oper, |
332 | const struct ieee80211_vht_operation *vht_oper, | |
41cbb0f5 | 333 | const struct ieee80211_he_operation *he_oper, |
30eb1dc2 | 334 | const u8 *bssid, u32 *changed) |
d5522e03 JB |
335 | { |
336 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 337 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
41cbb0f5 LC |
338 | struct ieee80211_channel *chan = sdata->vif.bss_conf.chandef.chan; |
339 | struct ieee80211_supported_band *sband = | |
340 | local->hw.wiphy->bands[chan->band]; | |
30eb1dc2 | 341 | struct cfg80211_chan_def chandef; |
9ed6bcce | 342 | u16 ht_opmode; |
30eb1dc2 JB |
343 | u32 flags; |
344 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
345 | int ret; | |
d5522e03 | 346 | |
30eb1dc2 JB |
347 | /* if HT was/is disabled, don't track any bandwidth changes */ |
348 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
349 | return 0; |
350 | ||
30eb1dc2 JB |
351 | /* don't check VHT if we associated as non-VHT station */ |
352 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
353 | vht_oper = NULL; | |
354 | ||
41cbb0f5 LC |
355 | /* don't check HE if we associated as non-HE station */ |
356 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HE || | |
357 | !ieee80211_get_he_sta_cap(sband)) | |
358 | he_oper = NULL; | |
359 | ||
30eb1dc2 JB |
360 | if (WARN_ON_ONCE(!sta)) |
361 | return -EINVAL; | |
362 | ||
017b45bb AA |
363 | /* |
364 | * if bss configuration changed store the new one - | |
365 | * this may be applicable even if channel is identical | |
366 | */ | |
367 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
368 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
369 | *changed |= BSS_CHANGED_HT; | |
370 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
371 | } | |
372 | ||
41cbb0f5 | 373 | /* calculate new channel (type) based on HT/VHT/HE operation IEs */ |
53b954ee | 374 | flags = ieee80211_determine_chantype(sdata, sband, chan, |
41cbb0f5 | 375 | ht_oper, vht_oper, he_oper, |
53b954ee | 376 | &chandef, true); |
30eb1dc2 JB |
377 | |
378 | /* | |
379 | * Downgrade the new channel if we associated with restricted | |
380 | * capabilities. For example, if we associated as a 20 MHz STA | |
381 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
382 | * reasons) then switching to a 40 MHz channel now won't do us | |
383 | * any good -- we couldn't use it with the AP. | |
384 | */ | |
385 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
386 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 387 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
388 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
389 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 390 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
391 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
392 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 393 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
394 | |
395 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
396 | return 0; | |
397 | ||
398 | sdata_info(sdata, | |
399 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
400 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
401 | chandef.center_freq1, chandef.center_freq2); | |
402 | ||
403 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
404 | IEEE80211_STA_DISABLE_VHT | | |
75e296e9 | 405 | IEEE80211_STA_DISABLE_HE | |
30eb1dc2 JB |
406 | IEEE80211_STA_DISABLE_40MHZ | |
407 | IEEE80211_STA_DISABLE_80P80MHZ | | |
408 | IEEE80211_STA_DISABLE_160MHZ)) || | |
409 | !cfg80211_chandef_valid(&chandef)) { | |
410 | sdata_info(sdata, | |
411 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
412 | ifmgd->bssid); | |
413 | return -EINVAL; | |
414 | } | |
415 | ||
416 | switch (chandef.width) { | |
417 | case NL80211_CHAN_WIDTH_20_NOHT: | |
418 | case NL80211_CHAN_WIDTH_20: | |
419 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
420 | break; | |
4bf88530 | 421 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 422 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 423 | break; |
30eb1dc2 JB |
424 | case NL80211_CHAN_WIDTH_80: |
425 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
426 | break; | |
427 | case NL80211_CHAN_WIDTH_80P80: | |
428 | case NL80211_CHAN_WIDTH_160: | |
429 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 430 | break; |
30eb1dc2 JB |
431 | default: |
432 | return -EINVAL; | |
64f68e5d | 433 | } |
d5522e03 | 434 | |
30eb1dc2 JB |
435 | if (new_sta_bw > sta->cur_max_bandwidth) |
436 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 437 | |
30eb1dc2 JB |
438 | if (new_sta_bw < sta->sta.bandwidth) { |
439 | sta->sta.bandwidth = new_sta_bw; | |
440 | rate_control_rate_update(local, sband, sta, | |
441 | IEEE80211_RC_BW_CHANGED); | |
442 | } | |
64f68e5d | 443 | |
30eb1dc2 JB |
444 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
445 | if (ret) { | |
446 | sdata_info(sdata, | |
447 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
448 | ifmgd->bssid); | |
449 | return ret; | |
450 | } | |
7cc44ed4 | 451 | |
30eb1dc2 JB |
452 | if (new_sta_bw > sta->sta.bandwidth) { |
453 | sta->sta.bandwidth = new_sta_bw; | |
454 | rate_control_rate_update(local, sband, sta, | |
455 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 456 | } |
d5522e03 | 457 | |
30eb1dc2 | 458 | return 0; |
d5522e03 JB |
459 | } |
460 | ||
9c6bd790 JB |
461 | /* frame sending functions */ |
462 | ||
66e67e41 | 463 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 464 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
465 | struct ieee80211_supported_band *sband, |
466 | struct ieee80211_channel *channel, | |
467 | enum ieee80211_smps_mode smps) | |
468 | { | |
66e67e41 JB |
469 | u8 *pos; |
470 | u32 flags = channel->flags; | |
471 | u16 cap; | |
472 | struct ieee80211_sta_ht_cap ht_cap; | |
473 | ||
474 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
475 | ||
66e67e41 JB |
476 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
477 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
478 | ||
66e67e41 JB |
479 | /* determine capability flags */ |
480 | cap = ht_cap.cap; | |
481 | ||
9dde6423 | 482 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
483 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
484 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
485 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
486 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
487 | } | |
488 | break; | |
489 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
490 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
491 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
492 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
493 | } | |
494 | break; | |
495 | } | |
496 | ||
24398e39 JB |
497 | /* |
498 | * If 40 MHz was disabled associate as though we weren't | |
499 | * capable of 40 MHz -- some broken APs will never fall | |
500 | * back to trying to transmit in 20 MHz. | |
501 | */ | |
502 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
503 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
504 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
505 | } | |
506 | ||
66e67e41 JB |
507 | /* set SM PS mode properly */ |
508 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
509 | switch (smps) { | |
510 | case IEEE80211_SMPS_AUTOMATIC: | |
511 | case IEEE80211_SMPS_NUM_MODES: | |
512 | WARN_ON(1); | |
02049ce2 | 513 | /* fall through */ |
66e67e41 JB |
514 | case IEEE80211_SMPS_OFF: |
515 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
516 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
517 | break; | |
518 | case IEEE80211_SMPS_STATIC: | |
519 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
520 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
521 | break; | |
522 | case IEEE80211_SMPS_DYNAMIC: | |
523 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
524 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
525 | break; | |
526 | } | |
527 | ||
528 | /* reserve and fill IE */ | |
529 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
530 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
531 | } | |
532 | ||
322cd406 SS |
533 | /* This function determines vht capability flags for the association |
534 | * and builds the IE. | |
535 | * Note - the function may set the owner of the MU-MIMO capability | |
536 | */ | |
d545daba MP |
537 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
538 | struct sk_buff *skb, | |
b08fbbd8 JB |
539 | struct ieee80211_supported_band *sband, |
540 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba | 541 | { |
322cd406 | 542 | struct ieee80211_local *local = sdata->local; |
d545daba MP |
543 | u8 *pos; |
544 | u32 cap; | |
545 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 546 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
547 | |
548 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
549 | ||
550 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 551 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
552 | |
553 | /* determine capability flags */ | |
554 | cap = vht_cap.cap; | |
555 | ||
f2d9d270 | 556 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
575f0530 JB |
557 | u32 bw = cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
558 | ||
559 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; | |
560 | if (bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ || | |
561 | bw == IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) | |
562 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
f2d9d270 JB |
563 | } |
564 | ||
565 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
566 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
575f0530 | 567 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; |
f2d9d270 JB |
568 | } |
569 | ||
b08fbbd8 JB |
570 | /* |
571 | * Some APs apparently get confused if our capabilities are better | |
572 | * than theirs, so restrict what we advertise in the assoc request. | |
573 | */ | |
574 | if (!(ap_vht_cap->vht_cap_info & | |
575 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
322cd406 SS |
576 | cap &= ~(IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | |
577 | IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); | |
578 | else if (!(ap_vht_cap->vht_cap_info & | |
579 | cpu_to_le32(IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE))) | |
580 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
581 | ||
582 | /* | |
583 | * If some other vif is using the MU-MIMO capablity we cannot associate | |
584 | * using MU-MIMO - this will lead to contradictions in the group-id | |
585 | * mechanism. | |
586 | * Ownership is defined since association request, in order to avoid | |
587 | * simultaneous associations with MU-MIMO. | |
588 | */ | |
589 | if (cap & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) { | |
590 | bool disable_mu_mimo = false; | |
591 | struct ieee80211_sub_if_data *other; | |
592 | ||
593 | list_for_each_entry_rcu(other, &local->interfaces, list) { | |
b5a33d52 | 594 | if (other->vif.mu_mimo_owner) { |
322cd406 SS |
595 | disable_mu_mimo = true; |
596 | break; | |
597 | } | |
598 | } | |
599 | if (disable_mu_mimo) | |
600 | cap &= ~IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE; | |
601 | else | |
b5a33d52 | 602 | sdata->vif.mu_mimo_owner = true; |
322cd406 | 603 | } |
b08fbbd8 | 604 | |
c1cf6d4e ES |
605 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
606 | ||
607 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
608 | our_bf_sts = cap & mask; | |
609 | ||
610 | if (ap_bf_sts < our_bf_sts) { | |
611 | cap &= ~mask; | |
612 | cap |= ap_bf_sts; | |
613 | } | |
614 | ||
d545daba | 615 | /* reserve and fill IE */ |
d4950281 | 616 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
617 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
618 | } | |
619 | ||
41cbb0f5 LC |
620 | /* This function determines HE capability flags for the association |
621 | * and builds the IE. | |
622 | */ | |
623 | static void ieee80211_add_he_ie(struct ieee80211_sub_if_data *sdata, | |
624 | struct sk_buff *skb, | |
625 | struct ieee80211_supported_band *sband) | |
626 | { | |
627 | u8 *pos; | |
628 | const struct ieee80211_sta_he_cap *he_cap = NULL; | |
b5db1aca | 629 | struct ieee80211_chanctx_conf *chanctx_conf; |
41cbb0f5 | 630 | u8 he_cap_size; |
b5db1aca HD |
631 | bool reg_cap = false; |
632 | ||
633 | rcu_read_lock(); | |
634 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
635 | if (!WARN_ON_ONCE(!chanctx_conf)) | |
636 | reg_cap = cfg80211_chandef_usable(sdata->wdev.wiphy, | |
637 | &chanctx_conf->def, | |
638 | IEEE80211_CHAN_NO_HE); | |
639 | ||
640 | rcu_read_unlock(); | |
41cbb0f5 LC |
641 | |
642 | he_cap = ieee80211_get_he_sta_cap(sband); | |
b5db1aca | 643 | if (!he_cap || !reg_cap) |
41cbb0f5 LC |
644 | return; |
645 | ||
646 | /* | |
647 | * TODO: the 1 added is because this temporarily is under the EXTENSION | |
648 | * IE. Get rid of it when it moves. | |
649 | */ | |
650 | he_cap_size = | |
651 | 2 + 1 + sizeof(he_cap->he_cap_elem) + | |
652 | ieee80211_he_mcs_nss_size(&he_cap->he_cap_elem) + | |
653 | ieee80211_he_ppe_size(he_cap->ppe_thres[0], | |
654 | he_cap->he_cap_elem.phy_cap_info); | |
655 | pos = skb_put(skb, he_cap_size); | |
656 | ieee80211_ie_build_he_cap(pos, he_cap, pos + he_cap_size); | |
657 | } | |
658 | ||
66e67e41 JB |
659 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
660 | { | |
661 | struct ieee80211_local *local = sdata->local; | |
662 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
663 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
664 | struct sk_buff *skb; | |
665 | struct ieee80211_mgmt *mgmt; | |
4d9ec73d | 666 | u8 *pos, qos_info, *ie_start; |
66e67e41 | 667 | size_t offset = 0, noffset; |
2103dec1 | 668 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
669 | u16 capab; |
670 | struct ieee80211_supported_band *sband; | |
55de908a JB |
671 | struct ieee80211_chanctx_conf *chanctx_conf; |
672 | struct ieee80211_channel *chan; | |
44f6d42c | 673 | u32 rates = 0; |
2ff69b0e JB |
674 | struct element *ext_capa = NULL; |
675 | ||
676 | /* we know it's writable, cast away the const */ | |
677 | if (assoc_data->ie_len) | |
678 | ext_capa = (void *)cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, | |
679 | assoc_data->ie, | |
680 | assoc_data->ie_len); | |
66e67e41 | 681 | |
8d61ffa5 | 682 | sdata_assert_lock(sdata); |
66e67e41 | 683 | |
55de908a JB |
684 | rcu_read_lock(); |
685 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
686 | if (WARN_ON(!chanctx_conf)) { | |
687 | rcu_read_unlock(); | |
688 | return; | |
689 | } | |
4bf88530 | 690 | chan = chanctx_conf->def.chan; |
55de908a JB |
691 | rcu_read_unlock(); |
692 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 693 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
694 | |
695 | if (assoc_data->supp_rates_len) { | |
696 | /* | |
697 | * Get all rates supported by the device and the AP as | |
698 | * some APs don't like getting a superset of their rates | |
699 | * in the association request (e.g. D-Link DAP 1353 in | |
700 | * b-only mode)... | |
701 | */ | |
2103dec1 SW |
702 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
703 | assoc_data->supp_rates, | |
704 | assoc_data->supp_rates_len, | |
705 | &rates); | |
66e67e41 JB |
706 | } else { |
707 | /* | |
708 | * In case AP not provide any supported rates information | |
709 | * before association, we send information element(s) with | |
710 | * all rates that we support. | |
711 | */ | |
2103dec1 SW |
712 | rates_len = 0; |
713 | for (i = 0; i < sband->n_bitrates; i++) { | |
2103dec1 SW |
714 | rates |= BIT(i); |
715 | rates_len++; | |
716 | } | |
66e67e41 JB |
717 | } |
718 | ||
719 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
720 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
721 | 2 + assoc_data->ssid_len + /* SSID */ | |
722 | 4 + rates_len + /* (extended) rates */ | |
723 | 4 + /* power capability */ | |
724 | 2 + 2 * sband->n_channels + /* supported channels */ | |
725 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 726 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
41cbb0f5 LC |
727 | 2 + 1 + sizeof(struct ieee80211_he_cap_elem) + /* HE */ |
728 | sizeof(struct ieee80211_he_mcs_nss_supp) + | |
729 | IEEE80211_HE_PPE_THRES_MAX_LEN + | |
66e67e41 | 730 | assoc_data->ie_len + /* extra IEs */ |
39404fee | 731 | (assoc_data->fils_kek_len ? 16 /* AES-SIV */ : 0) + |
66e67e41 JB |
732 | 9, /* WMM */ |
733 | GFP_KERNEL); | |
734 | if (!skb) | |
735 | return; | |
736 | ||
737 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
738 | ||
739 | capab = WLAN_CAPABILITY_ESS; | |
740 | ||
57fbcce3 | 741 | if (sband->band == NL80211_BAND_2GHZ) { |
ea1b2b45 JB |
742 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; |
743 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
66e67e41 JB |
744 | } |
745 | ||
746 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
747 | capab |= WLAN_CAPABILITY_PRIVACY; | |
748 | ||
749 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
30686bf7 | 750 | ieee80211_hw_check(&local->hw, SPECTRUM_MGMT)) |
66e67e41 JB |
751 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; |
752 | ||
cd2f5dd7 AK |
753 | if (ifmgd->flags & IEEE80211_STA_ENABLE_RRM) |
754 | capab |= WLAN_CAPABILITY_RADIO_MEASURE; | |
755 | ||
b080db58 | 756 | mgmt = skb_put_zero(skb, 24); |
66e67e41 JB |
757 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); |
758 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
759 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
760 | ||
761 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
762 | skb_put(skb, 10); | |
763 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
764 | IEEE80211_STYPE_REASSOC_REQ); | |
765 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
766 | mgmt->u.reassoc_req.listen_interval = | |
767 | cpu_to_le16(local->hw.conf.listen_interval); | |
768 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
769 | ETH_ALEN); | |
770 | } else { | |
771 | skb_put(skb, 4); | |
772 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
773 | IEEE80211_STYPE_ASSOC_REQ); | |
774 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
775 | mgmt->u.assoc_req.listen_interval = | |
776 | cpu_to_le16(local->hw.conf.listen_interval); | |
777 | } | |
778 | ||
779 | /* SSID */ | |
780 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
4d9ec73d | 781 | ie_start = pos; |
66e67e41 JB |
782 | *pos++ = WLAN_EID_SSID; |
783 | *pos++ = assoc_data->ssid_len; | |
784 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
785 | ||
786 | /* add all rates which were marked to be used above */ | |
787 | supp_rates_len = rates_len; | |
788 | if (supp_rates_len > 8) | |
789 | supp_rates_len = 8; | |
790 | ||
791 | pos = skb_put(skb, supp_rates_len + 2); | |
792 | *pos++ = WLAN_EID_SUPP_RATES; | |
793 | *pos++ = supp_rates_len; | |
794 | ||
795 | count = 0; | |
796 | for (i = 0; i < sband->n_bitrates; i++) { | |
797 | if (BIT(i) & rates) { | |
2103dec1 SW |
798 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
799 | 5 * (1 << shift)); | |
800 | *pos++ = (u8) rate; | |
66e67e41 JB |
801 | if (++count == 8) |
802 | break; | |
803 | } | |
804 | } | |
805 | ||
806 | if (rates_len > count) { | |
807 | pos = skb_put(skb, rates_len - count + 2); | |
808 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
809 | *pos++ = rates_len - count; | |
810 | ||
811 | for (i++; i < sband->n_bitrates; i++) { | |
812 | if (BIT(i) & rates) { | |
2103dec1 SW |
813 | int rate; |
814 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
815 | 5 * (1 << shift)); | |
816 | *pos++ = (u8) rate; | |
66e67e41 JB |
817 | } |
818 | } | |
819 | } | |
820 | ||
cd2f5dd7 AK |
821 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT || |
822 | capab & WLAN_CAPABILITY_RADIO_MEASURE) { | |
66e67e41 JB |
823 | pos = skb_put(skb, 4); |
824 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
825 | *pos++ = 2; | |
826 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
827 | /* max tx power */ |
828 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
cd2f5dd7 | 829 | } |
66e67e41 | 830 | |
2ff69b0e JB |
831 | /* |
832 | * Per spec, we shouldn't include the list of channels if we advertise | |
833 | * support for extended channel switching, but we've always done that; | |
834 | * (for now?) apply this restriction only on the (new) 6 GHz band. | |
835 | */ | |
836 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT && | |
837 | (sband->band != NL80211_BAND_6GHZ || | |
838 | !ext_capa || ext_capa->datalen < 1 || | |
839 | !(ext_capa->data[0] & WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING))) { | |
66e67e41 JB |
840 | /* TODO: get this in reg domain format */ |
841 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
842 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
843 | *pos++ = 2 * sband->n_channels; | |
844 | for (i = 0; i < sband->n_channels; i++) { | |
845 | *pos++ = ieee80211_frequency_to_channel( | |
846 | sband->channels[i].center_freq); | |
847 | *pos++ = 1; /* one channel in the subband*/ | |
848 | } | |
849 | } | |
850 | ||
caf56338 SS |
851 | /* Set MBSSID support for HE AP if needed */ |
852 | if (ieee80211_hw_check(&local->hw, SUPPORTS_ONLY_HE_MULTI_BSSID) && | |
2ff69b0e JB |
853 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && assoc_data->ie_len && |
854 | ext_capa && ext_capa->datalen >= 3) | |
855 | ext_capa->data[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT; | |
caf56338 | 856 | |
66e67e41 | 857 | /* if present, add any custom IEs that go before HT */ |
b3f51e94 | 858 | if (assoc_data->ie_len) { |
66e67e41 JB |
859 | static const u8 before_ht[] = { |
860 | WLAN_EID_SSID, | |
861 | WLAN_EID_SUPP_RATES, | |
862 | WLAN_EID_EXT_SUPP_RATES, | |
863 | WLAN_EID_PWR_CAPABILITY, | |
864 | WLAN_EID_SUPPORTED_CHANNELS, | |
865 | WLAN_EID_RSN, | |
866 | WLAN_EID_QOS_CAPA, | |
867 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
868 | WLAN_EID_MOBILITY_DOMAIN, | |
8ed28747 JB |
869 | WLAN_EID_FAST_BSS_TRANSITION, /* reassoc only */ |
870 | WLAN_EID_RIC_DATA, /* reassoc only */ | |
66e67e41 JB |
871 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, |
872 | }; | |
8ed28747 JB |
873 | static const u8 after_ric[] = { |
874 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
875 | WLAN_EID_HT_CAPABILITY, | |
876 | WLAN_EID_BSS_COEX_2040, | |
a7f26d80 | 877 | /* luckily this is almost always there */ |
8ed28747 JB |
878 | WLAN_EID_EXT_CAPABILITY, |
879 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
880 | WLAN_EID_TIM_BCAST_REQ, | |
881 | WLAN_EID_INTERWORKING, | |
a7f26d80 | 882 | /* 60 GHz (Multi-band, DMG, MMS) can't happen */ |
8ed28747 JB |
883 | WLAN_EID_VHT_CAPABILITY, |
884 | WLAN_EID_OPMODE_NOTIF, | |
885 | }; | |
886 | ||
887 | noffset = ieee80211_ie_split_ric(assoc_data->ie, | |
888 | assoc_data->ie_len, | |
889 | before_ht, | |
890 | ARRAY_SIZE(before_ht), | |
891 | after_ric, | |
892 | ARRAY_SIZE(after_ric), | |
893 | offset); | |
b952f4df | 894 | skb_put_data(skb, assoc_data->ie + offset, noffset - offset); |
66e67e41 JB |
895 | offset = noffset; |
896 | } | |
897 | ||
f2d9d270 JB |
898 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
899 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
900 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
901 | ||
a8243b72 | 902 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 903 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 904 | sband, chan, sdata->smps_mode); |
66e67e41 | 905 | |
3de3802c JB |
906 | /* if present, add any custom IEs that go before VHT */ |
907 | if (assoc_data->ie_len) { | |
908 | static const u8 before_vht[] = { | |
a7f26d80 JB |
909 | /* |
910 | * no need to list the ones split off before HT | |
911 | * or generated here | |
912 | */ | |
3de3802c JB |
913 | WLAN_EID_BSS_COEX_2040, |
914 | WLAN_EID_EXT_CAPABILITY, | |
915 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
916 | WLAN_EID_TIM_BCAST_REQ, | |
917 | WLAN_EID_INTERWORKING, | |
a7f26d80 | 918 | /* 60 GHz (Multi-band, DMG, MMS) can't happen */ |
3de3802c | 919 | }; |
8ed28747 JB |
920 | |
921 | /* RIC already taken above, so no need to handle here anymore */ | |
3de3802c JB |
922 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, |
923 | before_vht, ARRAY_SIZE(before_vht), | |
924 | offset); | |
b952f4df | 925 | skb_put_data(skb, assoc_data->ie + offset, noffset - offset); |
3de3802c JB |
926 | offset = noffset; |
927 | } | |
928 | ||
41cbb0f5 LC |
929 | /* if present, add any custom IEs that go before HE */ |
930 | if (assoc_data->ie_len) { | |
931 | static const u8 before_he[] = { | |
932 | /* | |
933 | * no need to list the ones split off before VHT | |
934 | * or generated here | |
935 | */ | |
936 | WLAN_EID_OPMODE_NOTIF, | |
937 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FUTURE_CHAN_GUIDANCE, | |
938 | /* 11ai elements */ | |
939 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_SESSION, | |
940 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_PUBLIC_KEY, | |
941 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_KEY_CONFIRM, | |
942 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_HLP_CONTAINER, | |
943 | WLAN_EID_EXTENSION, WLAN_EID_EXT_FILS_IP_ADDR_ASSIGN, | |
944 | /* TODO: add 11ah/11aj/11ak elements */ | |
945 | }; | |
946 | ||
947 | /* RIC already taken above, so no need to handle here anymore */ | |
948 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
949 | before_he, ARRAY_SIZE(before_he), | |
950 | offset); | |
951 | pos = skb_put(skb, noffset - offset); | |
952 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
953 | offset = noffset; | |
954 | } | |
955 | ||
d545daba | 956 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
957 | ieee80211_add_vht_ie(sdata, skb, sband, |
958 | &assoc_data->ap_vht_cap); | |
d545daba | 959 | |
dc7eb0f2 ST |
960 | /* |
961 | * If AP doesn't support HT, mark HE as disabled. | |
962 | * If on the 5GHz band, make sure it supports VHT. | |
963 | */ | |
964 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || | |
965 | (sband->band == NL80211_BAND_5GHZ && | |
966 | ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) | |
967 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; | |
968 | ||
41cbb0f5 LC |
969 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) |
970 | ieee80211_add_he_ie(sdata, skb, sband); | |
971 | ||
972 | /* if present, add any custom non-vendor IEs that go after HE */ | |
b3f51e94 | 973 | if (assoc_data->ie_len) { |
66e67e41 JB |
974 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
975 | assoc_data->ie_len, | |
976 | offset); | |
b952f4df | 977 | skb_put_data(skb, assoc_data->ie + offset, noffset - offset); |
66e67e41 JB |
978 | offset = noffset; |
979 | } | |
980 | ||
76f0303d JB |
981 | if (assoc_data->wmm) { |
982 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
983 | qos_info = ifmgd->uapsd_queues; |
984 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
985 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
986 | } else { | |
987 | qos_info = 0; | |
988 | } | |
989 | ||
40b861a0 | 990 | pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info); |
66e67e41 JB |
991 | } |
992 | ||
993 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 994 | if (assoc_data->ie_len) { |
66e67e41 | 995 | noffset = assoc_data->ie_len; |
b952f4df | 996 | skb_put_data(skb, assoc_data->ie + offset, noffset - offset); |
66e67e41 JB |
997 | } |
998 | ||
39404fee JM |
999 | if (assoc_data->fils_kek_len && |
1000 | fils_encrypt_assoc_req(skb, assoc_data) < 0) { | |
1001 | dev_kfree_skb(skb); | |
1002 | return; | |
1003 | } | |
1004 | ||
4d9ec73d JM |
1005 | pos = skb_tail_pointer(skb); |
1006 | kfree(ifmgd->assoc_req_ies); | |
1007 | ifmgd->assoc_req_ies = kmemdup(ie_start, pos - ie_start, GFP_ATOMIC); | |
1008 | ifmgd->assoc_req_ies_len = pos - ie_start; | |
1009 | ||
d4e36e55 | 1010 | drv_mgd_prepare_tx(local, sdata, 0); |
a1845fc7 | 1011 | |
66e67e41 | 1012 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
30686bf7 | 1013 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
1014 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | |
1015 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
1016 | ieee80211_tx_skb(sdata, skb); |
1017 | } | |
1018 | ||
572e0012 KV |
1019 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
1020 | struct ieee80211_sub_if_data *sdata) | |
1021 | { | |
572e0012 KV |
1022 | struct ieee80211_pspoll *pspoll; |
1023 | struct sk_buff *skb; | |
572e0012 | 1024 | |
d8cd189e KV |
1025 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
1026 | if (!skb) | |
572e0012 | 1027 | return; |
572e0012 | 1028 | |
d8cd189e KV |
1029 | pspoll = (struct ieee80211_pspoll *) skb->data; |
1030 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 1031 | |
62ae67be JB |
1032 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1033 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
1034 | } |
1035 | ||
965bedad JB |
1036 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
1037 | struct ieee80211_sub_if_data *sdata, | |
076cdcb1 | 1038 | bool powersave) |
965bedad JB |
1039 | { |
1040 | struct sk_buff *skb; | |
d8cd189e | 1041 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 1042 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 1043 | |
41cbb0f5 LC |
1044 | /* Don't send NDPs when STA is connected HE */ |
1045 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1046 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) | |
1047 | return; | |
1048 | ||
7c181f4f BCD |
1049 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, |
1050 | !ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP)); | |
d8cd189e | 1051 | if (!skb) |
965bedad | 1052 | return; |
965bedad | 1053 | |
d8cd189e | 1054 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 1055 | if (powersave) |
d8cd189e | 1056 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 1057 | |
6c17b77b SF |
1058 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
1059 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 | 1060 | |
30686bf7 | 1061 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
ff40b425 PF |
1062 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; |
1063 | ||
392b9ffb | 1064 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
1065 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
1066 | ||
62ae67be | 1067 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
1068 | } |
1069 | ||
d524215f FF |
1070 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
1071 | struct ieee80211_sub_if_data *sdata) | |
1072 | { | |
1073 | struct sk_buff *skb; | |
1074 | struct ieee80211_hdr *nullfunc; | |
1075 | __le16 fc; | |
1076 | ||
1077 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
1078 | return; | |
1079 | ||
41cbb0f5 LC |
1080 | /* Don't send NDPs when connected HE */ |
1081 | if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE)) | |
1082 | return; | |
1083 | ||
d524215f | 1084 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); |
d15b8459 | 1085 | if (!skb) |
d524215f | 1086 | return; |
d15b8459 | 1087 | |
d524215f FF |
1088 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1089 | ||
b080db58 | 1090 | nullfunc = skb_put_zero(skb, 30); |
d524215f FF |
1091 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | |
1092 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
1093 | nullfunc->frame_control = fc; | |
1094 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
1095 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
1096 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
1097 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
1098 | ||
1099 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
1100 | ieee80211_tx_skb(sdata, skb); | |
1101 | } | |
1102 | ||
cc32abd4 JB |
1103 | /* spectrum management related things */ |
1104 | static void ieee80211_chswitch_work(struct work_struct *work) | |
1105 | { | |
1106 | struct ieee80211_sub_if_data *sdata = | |
1107 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 1108 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1109 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 | 1110 | int ret; |
cc32abd4 | 1111 | |
9607e6b6 | 1112 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
1113 | return; |
1114 | ||
8d61ffa5 | 1115 | sdata_lock(sdata); |
4c3ebc56 MK |
1116 | mutex_lock(&local->mtx); |
1117 | mutex_lock(&local->chanctx_mtx); | |
1118 | ||
77fdaa12 JB |
1119 | if (!ifmgd->associated) |
1120 | goto out; | |
cc32abd4 | 1121 | |
4c3ebc56 MK |
1122 | if (!sdata->vif.csa_active) |
1123 | goto out; | |
1124 | ||
1125 | /* | |
1126 | * using reservation isn't immediate as it may be deferred until later | |
1127 | * with multi-vif. once reservation is complete it will re-schedule the | |
1128 | * work with no reserved_chanctx so verify chandef to check if it | |
1129 | * completed successfully | |
1130 | */ | |
1131 | ||
1132 | if (sdata->reserved_chanctx) { | |
0007e943 IP |
1133 | struct ieee80211_supported_band *sband = NULL; |
1134 | struct sta_info *mgd_sta = NULL; | |
1135 | enum ieee80211_sta_rx_bandwidth bw = IEEE80211_STA_RX_BW_20; | |
1136 | ||
4c3ebc56 MK |
1137 | /* |
1138 | * with multi-vif csa driver may call ieee80211_csa_finish() | |
1139 | * many times while waiting for other interfaces to use their | |
1140 | * reservations | |
1141 | */ | |
1142 | if (sdata->reserved_ready) | |
1143 | goto out; | |
1144 | ||
0007e943 IP |
1145 | if (sdata->vif.bss_conf.chandef.width != |
1146 | sdata->csa_chandef.width) { | |
1147 | /* | |
1148 | * For managed interface, we need to also update the AP | |
1149 | * station bandwidth and align the rate scale algorithm | |
1150 | * on the bandwidth change. Here we only consider the | |
1151 | * bandwidth of the new channel definition (as channel | |
1152 | * switch flow does not have the full HT/VHT/HE | |
1153 | * information), assuming that if additional changes are | |
1154 | * required they would be done as part of the processing | |
1155 | * of the next beacon from the AP. | |
1156 | */ | |
1157 | switch (sdata->csa_chandef.width) { | |
1158 | case NL80211_CHAN_WIDTH_20_NOHT: | |
1159 | case NL80211_CHAN_WIDTH_20: | |
1160 | default: | |
1161 | bw = IEEE80211_STA_RX_BW_20; | |
1162 | break; | |
1163 | case NL80211_CHAN_WIDTH_40: | |
1164 | bw = IEEE80211_STA_RX_BW_40; | |
1165 | break; | |
1166 | case NL80211_CHAN_WIDTH_80: | |
1167 | bw = IEEE80211_STA_RX_BW_80; | |
1168 | break; | |
1169 | case NL80211_CHAN_WIDTH_80P80: | |
1170 | case NL80211_CHAN_WIDTH_160: | |
1171 | bw = IEEE80211_STA_RX_BW_160; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | mgd_sta = sta_info_get(sdata, ifmgd->bssid); | |
1176 | sband = | |
1177 | local->hw.wiphy->bands[sdata->csa_chandef.chan->band]; | |
1178 | } | |
1179 | ||
1180 | if (sdata->vif.bss_conf.chandef.width > | |
1181 | sdata->csa_chandef.width) { | |
1182 | mgd_sta->sta.bandwidth = bw; | |
1183 | rate_control_rate_update(local, sband, mgd_sta, | |
1184 | IEEE80211_RC_BW_CHANGED); | |
1185 | } | |
1186 | ||
4c3ebc56 MK |
1187 | ret = ieee80211_vif_use_reserved_context(sdata); |
1188 | if (ret) { | |
1189 | sdata_info(sdata, | |
1190 | "failed to use reserved channel context, disconnecting (err=%d)\n", | |
1191 | ret); | |
1192 | ieee80211_queue_work(&sdata->local->hw, | |
1193 | &ifmgd->csa_connection_drop_work); | |
1194 | goto out; | |
1195 | } | |
1196 | ||
0007e943 IP |
1197 | if (sdata->vif.bss_conf.chandef.width < |
1198 | sdata->csa_chandef.width) { | |
1199 | mgd_sta->sta.bandwidth = bw; | |
1200 | rate_control_rate_update(local, sband, mgd_sta, | |
1201 | IEEE80211_RC_BW_CHANGED); | |
1202 | } | |
1203 | ||
4c3ebc56 MK |
1204 | goto out; |
1205 | } | |
1206 | ||
1207 | if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, | |
1208 | &sdata->csa_chandef)) { | |
7578d575 | 1209 | sdata_info(sdata, |
4c3ebc56 | 1210 | "failed to finalize channel switch, disconnecting\n"); |
7578d575 AN |
1211 | ieee80211_queue_work(&sdata->local->hw, |
1212 | &ifmgd->csa_connection_drop_work); | |
1213 | goto out; | |
1214 | } | |
675a0b04 | 1215 | |
0c21e632 LC |
1216 | ifmgd->csa_waiting_bcn = true; |
1217 | ||
1218 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1219 | ieee80211_sta_reset_conn_monitor(sdata); | |
1220 | ||
1221 | out: | |
1222 | mutex_unlock(&local->chanctx_mtx); | |
1223 | mutex_unlock(&local->mtx); | |
1224 | sdata_unlock(sdata); | |
1225 | } | |
1226 | ||
1227 | static void ieee80211_chswitch_post_beacon(struct ieee80211_sub_if_data *sdata) | |
1228 | { | |
1229 | struct ieee80211_local *local = sdata->local; | |
1230 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1231 | int ret; | |
1232 | ||
1233 | sdata_assert_lock(sdata); | |
1234 | ||
1235 | WARN_ON(!sdata->vif.csa_active); | |
4c3ebc56 | 1236 | |
a46992b4 LC |
1237 | if (sdata->csa_block_tx) { |
1238 | ieee80211_wake_vif_queues(local, sdata, | |
1239 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1240 | sdata->csa_block_tx = false; | |
1241 | } | |
7578d575 | 1242 | |
0c21e632 LC |
1243 | sdata->vif.csa_active = false; |
1244 | ifmgd->csa_waiting_bcn = false; | |
1245 | ||
f1d65583 LC |
1246 | ret = drv_post_channel_switch(sdata); |
1247 | if (ret) { | |
1248 | sdata_info(sdata, | |
1249 | "driver post channel switch failed, disconnecting\n"); | |
1250 | ieee80211_queue_work(&local->hw, | |
1251 | &ifmgd->csa_connection_drop_work); | |
0c21e632 | 1252 | return; |
f1d65583 | 1253 | } |
688b1ecf LC |
1254 | |
1255 | cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef); | |
cc32abd4 JB |
1256 | } |
1257 | ||
5ce6e438 JB |
1258 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
1259 | { | |
55de908a JB |
1260 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
1261 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
1262 | |
1263 | trace_api_chswitch_done(sdata, success); | |
1264 | if (!success) { | |
882a7c69 JB |
1265 | sdata_info(sdata, |
1266 | "driver channel switch failed, disconnecting\n"); | |
1267 | ieee80211_queue_work(&sdata->local->hw, | |
1268 | &ifmgd->csa_connection_drop_work); | |
1269 | } else { | |
1270 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1271 | } |
5ce6e438 JB |
1272 | } |
1273 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1274 | ||
34f11cd3 | 1275 | static void ieee80211_chswitch_timer(struct timer_list *t) |
cc32abd4 JB |
1276 | { |
1277 | struct ieee80211_sub_if_data *sdata = | |
34f11cd3 | 1278 | from_timer(sdata, t, u.mgd.chswitch_timer); |
5bb644a0 | 1279 | |
9b7d72c1 | 1280 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1281 | } |
1282 | ||
b9cc81d8 SS |
1283 | static void |
1284 | ieee80211_sta_abort_chanswitch(struct ieee80211_sub_if_data *sdata) | |
1285 | { | |
1286 | struct ieee80211_local *local = sdata->local; | |
1287 | ||
1288 | if (!local->ops->abort_channel_switch) | |
1289 | return; | |
1290 | ||
1291 | mutex_lock(&local->mtx); | |
1292 | ||
1293 | mutex_lock(&local->chanctx_mtx); | |
1294 | ieee80211_vif_unreserve_chanctx(sdata); | |
1295 | mutex_unlock(&local->chanctx_mtx); | |
1296 | ||
1297 | if (sdata->csa_block_tx) | |
1298 | ieee80211_wake_vif_queues(local, sdata, | |
1299 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
1300 | ||
1301 | sdata->csa_block_tx = false; | |
1302 | sdata->vif.csa_active = false; | |
1303 | ||
1304 | mutex_unlock(&local->mtx); | |
1305 | ||
1306 | drv_abort_channel_switch(sdata); | |
1307 | } | |
1308 | ||
37799e52 | 1309 | static void |
4a3cb702 | 1310 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
2ba45384 LC |
1311 | u64 timestamp, u32 device_timestamp, |
1312 | struct ieee802_11_elems *elems, | |
04a161f4 | 1313 | bool beacon) |
cc32abd4 | 1314 | { |
b4f286a1 | 1315 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1316 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1317 | struct cfg80211_bss *cbss = ifmgd->associated; |
4c3ebc56 | 1318 | struct ieee80211_chanctx_conf *conf; |
55de908a | 1319 | struct ieee80211_chanctx *chanctx; |
57fbcce3 | 1320 | enum nl80211_band current_band; |
c0f17eb9 | 1321 | struct ieee80211_csa_ie csa_ie; |
6d027bcc | 1322 | struct ieee80211_channel_switch ch_switch; |
e6b7cde4 | 1323 | int res; |
cc32abd4 | 1324 | |
8d61ffa5 | 1325 | sdata_assert_lock(sdata); |
77fdaa12 | 1326 | |
37799e52 | 1327 | if (!cbss) |
cc32abd4 JB |
1328 | return; |
1329 | ||
b4f286a1 | 1330 | if (local->scanning) |
cc32abd4 JB |
1331 | return; |
1332 | ||
e6b7cde4 | 1333 | current_band = cbss->channel->band; |
84469a45 | 1334 | res = ieee80211_parse_ch_switch_ie(sdata, elems, current_band, |
e6b7cde4 | 1335 | ifmgd->flags, |
c0f17eb9 | 1336 | ifmgd->associated->bssid, &csa_ie); |
fafd2bce SS |
1337 | |
1338 | if (!res) { | |
1339 | ch_switch.timestamp = timestamp; | |
1340 | ch_switch.device_timestamp = device_timestamp; | |
2bf973ff | 1341 | ch_switch.block_tx = csa_ie.mode; |
fafd2bce SS |
1342 | ch_switch.chandef = csa_ie.chandef; |
1343 | ch_switch.count = csa_ie.count; | |
1344 | ch_switch.delay = csa_ie.max_switch_time; | |
1345 | } | |
1346 | ||
b9cc81d8 | 1347 | if (res < 0) { |
b4f286a1 | 1348 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1349 | &ifmgd->csa_connection_drop_work); |
cc32abd4 | 1350 | return; |
b9cc81d8 SS |
1351 | } |
1352 | ||
fafd2bce SS |
1353 | if (beacon && sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) { |
1354 | if (res) | |
1355 | ieee80211_sta_abort_chanswitch(sdata); | |
1356 | else | |
1357 | drv_channel_switch_rx_beacon(sdata, &ch_switch); | |
b9cc81d8 SS |
1358 | return; |
1359 | } else if (sdata->vif.csa_active || res) { | |
1360 | /* disregard subsequent announcements if already processing */ | |
1361 | return; | |
1362 | } | |
cd64f2a9 | 1363 | |
c0f17eb9 | 1364 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1365 | IEEE80211_CHAN_DISABLED)) { |
1366 | sdata_info(sdata, | |
1367 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1368 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1369 | csa_ie.chandef.chan->center_freq, |
1370 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1371 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1372 | ieee80211_queue_work(&local->hw, |
1373 | &ifmgd->csa_connection_drop_work); | |
1374 | return; | |
1375 | } | |
1376 | ||
f84eaa10 | 1377 | if (cfg80211_chandef_identical(&csa_ie.chandef, |
9792875c SS |
1378 | &sdata->vif.bss_conf.chandef) && |
1379 | (!csa_ie.mode || !beacon)) { | |
f84eaa10 JB |
1380 | if (ifmgd->csa_ignored_same_chan) |
1381 | return; | |
1382 | sdata_info(sdata, | |
1383 | "AP %pM tries to chanswitch to same channel, ignore\n", | |
1384 | ifmgd->associated->bssid); | |
1385 | ifmgd->csa_ignored_same_chan = true; | |
1386 | return; | |
1387 | } | |
1388 | ||
c5a71688 AN |
1389 | /* |
1390 | * Drop all TDLS peers - either we disconnect or move to a different | |
1391 | * channel from this point on. There's no telling what our peer will do. | |
1392 | * The TDLS WIDER_BW scenario is also problematic, as peers might now | |
1393 | * have an incompatible wider chandef. | |
1394 | */ | |
1395 | ieee80211_teardown_tdls_peers(sdata); | |
1396 | ||
4c3ebc56 | 1397 | mutex_lock(&local->mtx); |
7578d575 | 1398 | mutex_lock(&local->chanctx_mtx); |
4c3ebc56 MK |
1399 | conf = rcu_dereference_protected(sdata->vif.chanctx_conf, |
1400 | lockdep_is_held(&local->chanctx_mtx)); | |
1401 | if (!conf) { | |
1402 | sdata_info(sdata, | |
1403 | "no channel context assigned to vif?, disconnecting\n"); | |
f3b0bbb3 | 1404 | goto drop_connection; |
4c3ebc56 MK |
1405 | } |
1406 | ||
1407 | chanctx = container_of(conf, struct ieee80211_chanctx, conf); | |
1408 | ||
0f791eb4 | 1409 | if (local->use_chanctx && |
30686bf7 | 1410 | !ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA)) { |
0f791eb4 LC |
1411 | sdata_info(sdata, |
1412 | "driver doesn't support chan-switch with channel contexts\n"); | |
f3b0bbb3 | 1413 | goto drop_connection; |
55de908a JB |
1414 | } |
1415 | ||
6d027bcc LC |
1416 | if (drv_pre_channel_switch(sdata, &ch_switch)) { |
1417 | sdata_info(sdata, | |
1418 | "preparing for channel switch failed, disconnecting\n"); | |
f3b0bbb3 | 1419 | goto drop_connection; |
6d027bcc LC |
1420 | } |
1421 | ||
4c3ebc56 MK |
1422 | res = ieee80211_vif_reserve_chanctx(sdata, &csa_ie.chandef, |
1423 | chanctx->mode, false); | |
1424 | if (res) { | |
55de908a | 1425 | sdata_info(sdata, |
4c3ebc56 MK |
1426 | "failed to reserve channel context for channel switch, disconnecting (err=%d)\n", |
1427 | res); | |
f3b0bbb3 | 1428 | goto drop_connection; |
55de908a | 1429 | } |
b4f286a1 | 1430 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1431 | |
c46a73f3 | 1432 | sdata->vif.csa_active = true; |
4c3ebc56 | 1433 | sdata->csa_chandef = csa_ie.chandef; |
2bf973ff | 1434 | sdata->csa_block_tx = csa_ie.mode; |
f84eaa10 | 1435 | ifmgd->csa_ignored_same_chan = false; |
55de908a | 1436 | |
59af6928 | 1437 | if (sdata->csa_block_tx) |
a46992b4 LC |
1438 | ieee80211_stop_vif_queues(local, sdata, |
1439 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
59af6928 | 1440 | mutex_unlock(&local->mtx); |
57eebdf3 | 1441 | |
2f457293 LC |
1442 | cfg80211_ch_switch_started_notify(sdata->dev, &csa_ie.chandef, |
1443 | csa_ie.count); | |
1444 | ||
b4f286a1 | 1445 | if (local->ops->channel_switch) { |
5ce6e438 | 1446 | /* use driver's channel switch callback */ |
0f791eb4 | 1447 | drv_channel_switch(local, sdata, &ch_switch); |
5ce6e438 JB |
1448 | return; |
1449 | } | |
1450 | ||
1451 | /* channel switch handled in software */ | |
c0f17eb9 | 1452 | if (csa_ie.count <= 1) |
b4f286a1 | 1453 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1454 | else |
cc32abd4 | 1455 | mod_timer(&ifmgd->chswitch_timer, |
ff1e417c LC |
1456 | TU_TO_EXP_TIME((csa_ie.count - 1) * |
1457 | cbss->beacon_interval)); | |
f3b0bbb3 JB |
1458 | return; |
1459 | drop_connection: | |
6c18b27d EG |
1460 | /* |
1461 | * This is just so that the disconnect flow will know that | |
1462 | * we were trying to switch channel and failed. In case the | |
1463 | * mode is 1 (we are not allowed to Tx), we will know not to | |
1464 | * send a deauthentication frame. Those two fields will be | |
1465 | * reset when the disconnection worker runs. | |
1466 | */ | |
1467 | sdata->vif.csa_active = true; | |
2bf973ff | 1468 | sdata->csa_block_tx = csa_ie.mode; |
6c18b27d | 1469 | |
f3b0bbb3 JB |
1470 | ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); |
1471 | mutex_unlock(&local->chanctx_mtx); | |
1472 | mutex_unlock(&local->mtx); | |
cc32abd4 JB |
1473 | } |
1474 | ||
24a4e400 SG |
1475 | static bool |
1476 | ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
1477 | struct ieee80211_channel *channel, | |
1478 | const u8 *country_ie, u8 country_ie_len, | |
1479 | const u8 *pwr_constr_elem, | |
1480 | int *chan_pwr, int *pwr_reduction) | |
cc32abd4 | 1481 | { |
04b7b2ff JB |
1482 | struct ieee80211_country_ie_triplet *triplet; |
1483 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
24a4e400 | 1484 | int i, chan_increment; |
04b7b2ff | 1485 | bool have_chan_pwr = false; |
cc32abd4 | 1486 | |
04b7b2ff JB |
1487 | /* Invalid IE */ |
1488 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
24a4e400 | 1489 | return false; |
cc32abd4 | 1490 | |
04b7b2ff JB |
1491 | triplet = (void *)(country_ie + 3); |
1492 | country_ie_len -= 3; | |
1493 | ||
1494 | switch (channel->band) { | |
1495 | default: | |
1496 | WARN_ON_ONCE(1); | |
1497 | /* fall through */ | |
57fbcce3 JB |
1498 | case NL80211_BAND_2GHZ: |
1499 | case NL80211_BAND_60GHZ: | |
04b7b2ff JB |
1500 | chan_increment = 1; |
1501 | break; | |
57fbcce3 | 1502 | case NL80211_BAND_5GHZ: |
04b7b2ff JB |
1503 | chan_increment = 4; |
1504 | break; | |
cc32abd4 | 1505 | } |
04b7b2ff JB |
1506 | |
1507 | /* find channel */ | |
1508 | while (country_ie_len >= 3) { | |
1509 | u8 first_channel = triplet->chans.first_channel; | |
1510 | ||
1511 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1512 | goto next; | |
1513 | ||
1514 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1515 | if (first_channel + i * chan_increment == chan) { | |
1516 | have_chan_pwr = true; | |
24a4e400 | 1517 | *chan_pwr = triplet->chans.max_power; |
04b7b2ff JB |
1518 | break; |
1519 | } | |
1520 | } | |
1521 | if (have_chan_pwr) | |
1522 | break; | |
1523 | ||
1524 | next: | |
1525 | triplet++; | |
1526 | country_ie_len -= 3; | |
1527 | } | |
1528 | ||
a5fee9cb | 1529 | if (have_chan_pwr && pwr_constr_elem) |
24a4e400 | 1530 | *pwr_reduction = *pwr_constr_elem; |
a5fee9cb MB |
1531 | else |
1532 | *pwr_reduction = 0; | |
1533 | ||
24a4e400 SG |
1534 | return have_chan_pwr; |
1535 | } | |
1536 | ||
c8d65917 SG |
1537 | static void ieee80211_find_cisco_dtpc(struct ieee80211_sub_if_data *sdata, |
1538 | struct ieee80211_channel *channel, | |
1539 | const u8 *cisco_dtpc_ie, | |
1540 | int *pwr_level) | |
1541 | { | |
1542 | /* From practical testing, the first data byte of the DTPC element | |
1543 | * seems to contain the requested dBm level, and the CLI on Cisco | |
1544 | * APs clearly state the range is -127 to 127 dBm, which indicates | |
1545 | * a signed byte, although it seemingly never actually goes negative. | |
1546 | * The other byte seems to always be zero. | |
1547 | */ | |
1548 | *pwr_level = (__s8)cisco_dtpc_ie[4]; | |
1549 | } | |
1550 | ||
24a4e400 SG |
1551 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1552 | struct ieee80211_channel *channel, | |
1553 | struct ieee80211_mgmt *mgmt, | |
1554 | const u8 *country_ie, u8 country_ie_len, | |
c8d65917 SG |
1555 | const u8 *pwr_constr_ie, |
1556 | const u8 *cisco_dtpc_ie) | |
24a4e400 | 1557 | { |
c8d65917 SG |
1558 | bool has_80211h_pwr = false, has_cisco_pwr = false; |
1559 | int chan_pwr = 0, pwr_reduction_80211h = 0; | |
1560 | int pwr_level_cisco, pwr_level_80211h; | |
24a4e400 | 1561 | int new_ap_level; |
a5fee9cb | 1562 | __le16 capab = mgmt->u.probe_resp.capab_info; |
04b7b2ff | 1563 | |
a5fee9cb MB |
1564 | if (country_ie && |
1565 | (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) || | |
1566 | capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) { | |
24a4e400 SG |
1567 | has_80211h_pwr = ieee80211_find_80211h_pwr_constr( |
1568 | sdata, channel, country_ie, country_ie_len, | |
1569 | pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h); | |
c8d65917 SG |
1570 | pwr_level_80211h = |
1571 | max_t(int, 0, chan_pwr - pwr_reduction_80211h); | |
1572 | } | |
1573 | ||
1574 | if (cisco_dtpc_ie) { | |
1575 | ieee80211_find_cisco_dtpc( | |
1576 | sdata, channel, cisco_dtpc_ie, &pwr_level_cisco); | |
1577 | has_cisco_pwr = true; | |
24a4e400 | 1578 | } |
04b7b2ff | 1579 | |
c8d65917 | 1580 | if (!has_80211h_pwr && !has_cisco_pwr) |
1ea6f9c0 | 1581 | return 0; |
04b7b2ff | 1582 | |
c8d65917 SG |
1583 | /* If we have both 802.11h and Cisco DTPC, apply both limits |
1584 | * by picking the smallest of the two power levels advertised. | |
1585 | */ | |
1586 | if (has_80211h_pwr && | |
1587 | (!has_cisco_pwr || pwr_level_80211h <= pwr_level_cisco)) { | |
a87da0cb JB |
1588 | new_ap_level = pwr_level_80211h; |
1589 | ||
1590 | if (sdata->ap_power_level == new_ap_level) | |
1591 | return 0; | |
1592 | ||
cef2fc1c JL |
1593 | sdata_dbg(sdata, |
1594 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1595 | pwr_level_80211h, chan_pwr, pwr_reduction_80211h, | |
1596 | sdata->u.mgd.bssid); | |
c8d65917 | 1597 | } else { /* has_cisco_pwr is always true here. */ |
a87da0cb JB |
1598 | new_ap_level = pwr_level_cisco; |
1599 | ||
1600 | if (sdata->ap_power_level == new_ap_level) | |
1601 | return 0; | |
1602 | ||
cef2fc1c JL |
1603 | sdata_dbg(sdata, |
1604 | "Limiting TX power to %d dBm as advertised by %pM\n", | |
1605 | pwr_level_cisco, sdata->u.mgd.bssid); | |
c8d65917 | 1606 | } |
04b7b2ff | 1607 | |
1ea6f9c0 JB |
1608 | sdata->ap_power_level = new_ap_level; |
1609 | if (__ieee80211_recalc_txpower(sdata)) | |
1610 | return BSS_CHANGED_TXPOWER; | |
1611 | return 0; | |
cc32abd4 JB |
1612 | } |
1613 | ||
965bedad JB |
1614 | /* powersave */ |
1615 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1616 | struct ieee80211_sub_if_data *sdata) | |
1617 | { | |
1618 | struct ieee80211_conf *conf = &local->hw.conf; | |
1619 | ||
d5edaedc JB |
1620 | /* |
1621 | * If we are scanning right now then the parameters will | |
1622 | * take effect when scan finishes. | |
1623 | */ | |
fbe9c429 | 1624 | if (local->scanning) |
d5edaedc JB |
1625 | return; |
1626 | ||
965bedad | 1627 | if (conf->dynamic_ps_timeout > 0 && |
30686bf7 | 1628 | !ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) { |
965bedad JB |
1629 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1630 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1631 | } else { | |
30686bf7 | 1632 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) |
076cdcb1 | 1633 | ieee80211_send_nullfunc(local, sdata, true); |
375177bf | 1634 | |
30686bf7 JB |
1635 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
1636 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) | |
2a13052f JO |
1637 | return; |
1638 | ||
1639 | conf->flags |= IEEE80211_CONF_PS; | |
1640 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1641 | } |
1642 | } | |
1643 | ||
1644 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1645 | { | |
1646 | struct ieee80211_conf *conf = &local->hw.conf; | |
1647 | ||
1648 | if (local->ps_sdata) { | |
965bedad JB |
1649 | ieee80211_enable_ps(local, local->ps_sdata); |
1650 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1651 | conf->flags &= ~IEEE80211_CONF_PS; | |
1652 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1653 | del_timer_sync(&local->dynamic_ps_timer); | |
1654 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1655 | } | |
1656 | } | |
1657 | ||
808118cb JY |
1658 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1659 | { | |
1660 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1661 | struct sta_info *sta = NULL; | |
c2c98fde | 1662 | bool authorized = false; |
808118cb JY |
1663 | |
1664 | if (!mgd->powersave) | |
1665 | return false; | |
1666 | ||
05cb9108 JB |
1667 | if (mgd->broken_ap) |
1668 | return false; | |
1669 | ||
808118cb JY |
1670 | if (!mgd->associated) |
1671 | return false; | |
1672 | ||
392b9ffb | 1673 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1674 | return false; |
1675 | ||
989c6505 | 1676 | if (!mgd->have_beacon) |
ce857888 AB |
1677 | return false; |
1678 | ||
808118cb JY |
1679 | rcu_read_lock(); |
1680 | sta = sta_info_get(sdata, mgd->bssid); | |
1681 | if (sta) | |
c2c98fde | 1682 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1683 | rcu_read_unlock(); |
1684 | ||
c2c98fde | 1685 | return authorized; |
808118cb JY |
1686 | } |
1687 | ||
965bedad | 1688 | /* need to hold RTNL or interface lock */ |
4a733ef1 | 1689 | void ieee80211_recalc_ps(struct ieee80211_local *local) |
965bedad JB |
1690 | { |
1691 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1692 | int count = 0; | |
195e294d | 1693 | int timeout; |
965bedad | 1694 | |
30686bf7 | 1695 | if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) { |
965bedad JB |
1696 | local->ps_sdata = NULL; |
1697 | return; | |
1698 | } | |
1699 | ||
1700 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1701 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1702 | continue; |
8c7914de RM |
1703 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1704 | /* If an AP vif is found, then disable PS | |
1705 | * by setting the count to zero thereby setting | |
1706 | * ps_sdata to NULL. | |
1707 | */ | |
1708 | count = 0; | |
1709 | break; | |
1710 | } | |
965bedad JB |
1711 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1712 | continue; | |
1713 | found = sdata; | |
1714 | count++; | |
1715 | } | |
1716 | ||
808118cb | 1717 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
4a733ef1 | 1718 | u8 dtimper = found->u.mgd.dtim_period; |
10f644a4 | 1719 | |
ff616381 | 1720 | timeout = local->dynamic_ps_forced_timeout; |
4a733ef1 JB |
1721 | if (timeout < 0) |
1722 | timeout = 100; | |
09b85568 | 1723 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1724 | |
4a733ef1 JB |
1725 | /* If the TIM IE is invalid, pretend the value is 1 */ |
1726 | if (!dtimper) | |
1727 | dtimper = 1; | |
1728 | ||
1729 | local->hw.conf.ps_dtim_period = dtimper; | |
1730 | local->ps_sdata = found; | |
10f644a4 | 1731 | } else { |
965bedad | 1732 | local->ps_sdata = NULL; |
10f644a4 | 1733 | } |
965bedad JB |
1734 | |
1735 | ieee80211_change_ps(local); | |
1736 | } | |
1737 | ||
ab095877 EP |
1738 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1739 | { | |
1740 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1741 | ||
1742 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1743 | sdata->vif.bss_conf.ps = ps_allowed; | |
1744 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1745 | } | |
1746 | } | |
1747 | ||
965bedad JB |
1748 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1749 | { | |
1750 | struct ieee80211_local *local = | |
1751 | container_of(work, struct ieee80211_local, | |
1752 | dynamic_ps_disable_work); | |
1753 | ||
1754 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1755 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1756 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1757 | } | |
1758 | ||
1759 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1760 | IEEE80211_MAX_QUEUE_MAP, |
cca07b00 LC |
1761 | IEEE80211_QUEUE_STOP_REASON_PS, |
1762 | false); | |
965bedad JB |
1763 | } |
1764 | ||
1765 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1766 | { | |
1767 | struct ieee80211_local *local = | |
1768 | container_of(work, struct ieee80211_local, | |
1769 | dynamic_ps_enable_work); | |
1770 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1771 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1772 | unsigned long flags; |
1773 | int q; | |
965bedad JB |
1774 | |
1775 | /* can only happen when PS was just disabled anyway */ | |
1776 | if (!sdata) | |
1777 | return; | |
1778 | ||
5e34069c CL |
1779 | ifmgd = &sdata->u.mgd; |
1780 | ||
965bedad JB |
1781 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1782 | return; | |
1783 | ||
09b85568 | 1784 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1785 | /* don't enter PS if TX frames are pending */ |
1786 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1787 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1788 | msecs_to_jiffies( | |
1789 | local->hw.conf.dynamic_ps_timeout)); | |
1790 | return; | |
1791 | } | |
77b7023a AN |
1792 | |
1793 | /* | |
1794 | * transmission can be stopped by others which leads to | |
1795 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1796 | * is not the actual idle state. | |
1797 | */ | |
1798 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1799 | for (q = 0; q < local->hw.queues; q++) { | |
1800 | if (local->queue_stop_reasons[q]) { | |
1801 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1802 | flags); | |
1803 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1804 | msecs_to_jiffies( | |
1805 | local->hw.conf.dynamic_ps_timeout)); | |
1806 | return; | |
1807 | } | |
1808 | } | |
1809 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1810 | } |
1ddc2867 | 1811 | |
30686bf7 | 1812 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
9c38a8b4 | 1813 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1814 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1815 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1816 | msecs_to_jiffies( | |
1817 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1818 | } else { |
076cdcb1 | 1819 | ieee80211_send_nullfunc(local, sdata, true); |
e8306f98 | 1820 | /* Flush to get the tx status of nullfunc frame */ |
3b24f4c6 | 1821 | ieee80211_flush_queues(local, sdata, false); |
e8306f98 | 1822 | } |
f3e85b9e VN |
1823 | } |
1824 | ||
30686bf7 JB |
1825 | if (!(ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
1826 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK)) || | |
375177bf VN |
1827 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1828 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1829 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1830 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1831 | } | |
965bedad JB |
1832 | } |
1833 | ||
34f11cd3 | 1834 | void ieee80211_dynamic_ps_timer(struct timer_list *t) |
965bedad | 1835 | { |
34f11cd3 | 1836 | struct ieee80211_local *local = from_timer(local, t, dynamic_ps_timer); |
965bedad | 1837 | |
42935eca | 1838 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1839 | } |
1840 | ||
164eb02d SW |
1841 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1842 | { | |
a85a7e28 | 1843 | struct delayed_work *delayed_work = to_delayed_work(work); |
164eb02d SW |
1844 | struct ieee80211_sub_if_data *sdata = |
1845 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1846 | dfs_cac_timer_work); | |
d2859df5 | 1847 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1848 | |
34a3740d JB |
1849 | mutex_lock(&sdata->local->mtx); |
1850 | if (sdata->wdev.cac_started) { | |
1851 | ieee80211_vif_release_channel(sdata); | |
1852 | cfg80211_cac_event(sdata->dev, &chandef, | |
1853 | NL80211_RADAR_CAC_FINISHED, | |
1854 | GFP_KERNEL); | |
1855 | } | |
1856 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1857 | } |
1858 | ||
02219b3a JB |
1859 | static bool |
1860 | __ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1861 | { | |
1862 | struct ieee80211_local *local = sdata->local; | |
1863 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
cc72f6e2 | 1864 | bool ret = false; |
02219b3a JB |
1865 | int ac; |
1866 | ||
1867 | if (local->hw.queues < IEEE80211_NUM_ACS) | |
1868 | return false; | |
1869 | ||
1870 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
1871 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
1872 | int non_acm_ac; | |
1873 | unsigned long now = jiffies; | |
1874 | ||
1875 | if (tx_tspec->action == TX_TSPEC_ACTION_NONE && | |
1876 | tx_tspec->admitted_time && | |
1877 | time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1878 | tx_tspec->consumed_tx_time = 0; | |
1879 | tx_tspec->time_slice_start = now; | |
1880 | ||
1881 | if (tx_tspec->downgraded) | |
1882 | tx_tspec->action = | |
1883 | TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
1884 | } | |
1885 | ||
1886 | switch (tx_tspec->action) { | |
1887 | case TX_TSPEC_ACTION_STOP_DOWNGRADE: | |
1888 | /* take the original parameters */ | |
1889 | if (drv_conf_tx(local, sdata, ac, &sdata->tx_conf[ac])) | |
1890 | sdata_err(sdata, | |
1891 | "failed to set TX queue parameters for queue %d\n", | |
1892 | ac); | |
1893 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1894 | tx_tspec->downgraded = false; | |
1895 | ret = true; | |
1896 | break; | |
1897 | case TX_TSPEC_ACTION_DOWNGRADE: | |
1898 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
1899 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1900 | ret = true; | |
1901 | break; | |
1902 | } | |
1903 | /* downgrade next lower non-ACM AC */ | |
1904 | for (non_acm_ac = ac + 1; | |
1905 | non_acm_ac < IEEE80211_NUM_ACS; | |
1906 | non_acm_ac++) | |
1907 | if (!(sdata->wmm_acm & BIT(7 - 2 * non_acm_ac))) | |
1908 | break; | |
93db1d9e JB |
1909 | /* Usually the loop will result in using BK even if it |
1910 | * requires admission control, but such a configuration | |
1911 | * makes no sense and we have to transmit somehow - the | |
1912 | * AC selection does the same thing. | |
1913 | * If we started out trying to downgrade from BK, then | |
1914 | * the extra condition here might be needed. | |
02219b3a | 1915 | */ |
93db1d9e JB |
1916 | if (non_acm_ac >= IEEE80211_NUM_ACS) |
1917 | non_acm_ac = IEEE80211_AC_BK; | |
02219b3a JB |
1918 | if (drv_conf_tx(local, sdata, ac, |
1919 | &sdata->tx_conf[non_acm_ac])) | |
1920 | sdata_err(sdata, | |
1921 | "failed to set TX queue parameters for queue %d\n", | |
1922 | ac); | |
1923 | tx_tspec->action = TX_TSPEC_ACTION_NONE; | |
1924 | ret = true; | |
1925 | schedule_delayed_work(&ifmgd->tx_tspec_wk, | |
1926 | tx_tspec->time_slice_start + HZ - now + 1); | |
1927 | break; | |
1928 | case TX_TSPEC_ACTION_NONE: | |
1929 | /* nothing now */ | |
1930 | break; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | return ret; | |
1935 | } | |
1936 | ||
1937 | void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata) | |
1938 | { | |
1939 | if (__ieee80211_sta_handle_tspec_ac_params(sdata)) | |
1940 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); | |
1941 | } | |
1942 | ||
1943 | static void ieee80211_sta_handle_tspec_ac_params_wk(struct work_struct *work) | |
1944 | { | |
1945 | struct ieee80211_sub_if_data *sdata; | |
1946 | ||
1947 | sdata = container_of(work, struct ieee80211_sub_if_data, | |
1948 | u.mgd.tx_tspec_wk.work); | |
1949 | ieee80211_sta_handle_tspec_ac_params(sdata); | |
1950 | } | |
1951 | ||
60f8b39c | 1952 | /* MLME */ |
41cbb0f5 LC |
1953 | static bool |
1954 | ieee80211_sta_wmm_params(struct ieee80211_local *local, | |
1955 | struct ieee80211_sub_if_data *sdata, | |
1956 | const u8 *wmm_param, size_t wmm_param_len, | |
1957 | const struct ieee80211_mu_edca_param_set *mu_edca) | |
f0706e82 | 1958 | { |
2ed77ea6 | 1959 | struct ieee80211_tx_queue_params params[IEEE80211_NUM_ACS]; |
4ced3f74 | 1960 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 1961 | size_t left; |
2e249fc3 | 1962 | int count, mu_edca_count, ac; |
4a3cb702 JB |
1963 | const u8 *pos; |
1964 | u8 uapsd_queues = 0; | |
f0706e82 | 1965 | |
e1b3ec1a | 1966 | if (!local->ops->conf_tx) |
7d25745d | 1967 | return false; |
e1b3ec1a | 1968 | |
32c5057b | 1969 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1970 | return false; |
3434fbd3 JB |
1971 | |
1972 | if (!wmm_param) | |
7d25745d | 1973 | return false; |
3434fbd3 | 1974 | |
f0706e82 | 1975 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1976 | return false; |
ab13315a KV |
1977 | |
1978 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1979 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1980 | |
f0706e82 | 1981 | count = wmm_param[6] & 0x0f; |
2e249fc3 ST |
1982 | /* -1 is the initial value of ifmgd->mu_edca_last_param_set. |
1983 | * if mu_edca was preset before and now it disappeared tell | |
1984 | * the driver about it. | |
1985 | */ | |
1986 | mu_edca_count = mu_edca ? mu_edca->mu_qos_info & 0x0f : -1; | |
1987 | if (count == ifmgd->wmm_last_param_set && | |
1988 | mu_edca_count == ifmgd->mu_edca_last_param_set) | |
7d25745d | 1989 | return false; |
46900298 | 1990 | ifmgd->wmm_last_param_set = count; |
2e249fc3 | 1991 | ifmgd->mu_edca_last_param_set = mu_edca_count; |
f0706e82 JB |
1992 | |
1993 | pos = wmm_param + 8; | |
1994 | left = wmm_param_len - 8; | |
1995 | ||
1996 | memset(¶ms, 0, sizeof(params)); | |
1997 | ||
00e96dec | 1998 | sdata->wmm_acm = 0; |
f0706e82 JB |
1999 | for (; left >= 4; left -= 4, pos += 4) { |
2000 | int aci = (pos[0] >> 5) & 0x03; | |
2001 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 2002 | bool uapsd = false; |
f0706e82 JB |
2003 | |
2004 | switch (aci) { | |
0eeb59fe | 2005 | case 1: /* AC_BK */ |
2ed77ea6 | 2006 | ac = IEEE80211_AC_BK; |
988c0f72 | 2007 | if (acm) |
00e96dec | 2008 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
2009 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
2010 | uapsd = true; | |
41cbb0f5 LC |
2011 | params[ac].mu_edca = !!mu_edca; |
2012 | if (mu_edca) | |
2013 | params[ac].mu_edca_param_rec = mu_edca->ac_bk; | |
f0706e82 | 2014 | break; |
0eeb59fe | 2015 | case 2: /* AC_VI */ |
2ed77ea6 | 2016 | ac = IEEE80211_AC_VI; |
988c0f72 | 2017 | if (acm) |
00e96dec | 2018 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
2019 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
2020 | uapsd = true; | |
41cbb0f5 LC |
2021 | params[ac].mu_edca = !!mu_edca; |
2022 | if (mu_edca) | |
2023 | params[ac].mu_edca_param_rec = mu_edca->ac_vi; | |
f0706e82 | 2024 | break; |
0eeb59fe | 2025 | case 3: /* AC_VO */ |
2ed77ea6 | 2026 | ac = IEEE80211_AC_VO; |
988c0f72 | 2027 | if (acm) |
00e96dec | 2028 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
2029 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
2030 | uapsd = true; | |
41cbb0f5 LC |
2031 | params[ac].mu_edca = !!mu_edca; |
2032 | if (mu_edca) | |
2033 | params[ac].mu_edca_param_rec = mu_edca->ac_vo; | |
f0706e82 | 2034 | break; |
0eeb59fe | 2035 | case 0: /* AC_BE */ |
f0706e82 | 2036 | default: |
2ed77ea6 | 2037 | ac = IEEE80211_AC_BE; |
988c0f72 | 2038 | if (acm) |
00e96dec | 2039 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
2040 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
2041 | uapsd = true; | |
41cbb0f5 LC |
2042 | params[ac].mu_edca = !!mu_edca; |
2043 | if (mu_edca) | |
2044 | params[ac].mu_edca_param_rec = mu_edca->ac_be; | |
f0706e82 JB |
2045 | break; |
2046 | } | |
2047 | ||
2ed77ea6 | 2048 | params[ac].aifs = pos[0] & 0x0f; |
730a7550 | 2049 | |
2ed77ea6 | 2050 | if (params[ac].aifs < 2) { |
730a7550 EG |
2051 | sdata_info(sdata, |
2052 | "AP has invalid WMM params (AIFSN=%d for ACI %d), will use 2\n", | |
2ed77ea6 JB |
2053 | params[ac].aifs, aci); |
2054 | params[ac].aifs = 2; | |
730a7550 | 2055 | } |
2ed77ea6 JB |
2056 | params[ac].cw_max = ecw2cw((pos[1] & 0xf0) >> 4); |
2057 | params[ac].cw_min = ecw2cw(pos[1] & 0x0f); | |
2058 | params[ac].txop = get_unaligned_le16(pos + 2); | |
2059 | params[ac].acm = acm; | |
2060 | params[ac].uapsd = uapsd; | |
ab13315a | 2061 | |
911a2648 | 2062 | if (params[ac].cw_min == 0 || |
c470bdc1 | 2063 | params[ac].cw_min > params[ac].cw_max) { |
2ed77ea6 JB |
2064 | sdata_info(sdata, |
2065 | "AP has invalid WMM params (CWmin/max=%d/%d for ACI %d), using defaults\n", | |
2066 | params[ac].cw_min, params[ac].cw_max, aci); | |
2067 | return false; | |
2068 | } | |
e552af05 | 2069 | ieee80211_regulatory_limit_wmm_params(sdata, ¶ms[ac], ac); |
2ed77ea6 JB |
2070 | } |
2071 | ||
05aaa5c9 BN |
2072 | /* WMM specification requires all 4 ACIs. */ |
2073 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
2074 | if (params[ac].cw_min == 0) { | |
2075 | sdata_info(sdata, | |
2076 | "AP has invalid WMM params (missing AC %d), using defaults\n", | |
2077 | ac); | |
2078 | return false; | |
2079 | } | |
2080 | } | |
2081 | ||
2ed77ea6 | 2082 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
bdcbd8e0 | 2083 | mlme_dbg(sdata, |
2ed77ea6 JB |
2084 | "WMM AC=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d, downgraded=%d\n", |
2085 | ac, params[ac].acm, | |
2086 | params[ac].aifs, params[ac].cw_min, params[ac].cw_max, | |
2087 | params[ac].txop, params[ac].uapsd, | |
2088 | ifmgd->tx_tspec[ac].downgraded); | |
2089 | sdata->tx_conf[ac] = params[ac]; | |
2090 | if (!ifmgd->tx_tspec[ac].downgraded && | |
2091 | drv_conf_tx(local, sdata, ac, ¶ms[ac])) | |
bdcbd8e0 | 2092 | sdata_err(sdata, |
2ed77ea6 JB |
2093 | "failed to set TX queue parameters for AC %d\n", |
2094 | ac); | |
f0706e82 | 2095 | } |
e1b3ec1a SG |
2096 | |
2097 | /* enable WMM or activate new settings */ | |
4ced3f74 | 2098 | sdata->vif.bss_conf.qos = true; |
7d25745d | 2099 | return true; |
f0706e82 JB |
2100 | } |
2101 | ||
925e64c3 SG |
2102 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
2103 | { | |
2104 | lockdep_assert_held(&sdata->local->mtx); | |
2105 | ||
392b9ffb | 2106 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
2107 | ieee80211_run_deferred_scan(sdata->local); |
2108 | } | |
2109 | ||
2110 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
2111 | { | |
2112 | mutex_lock(&sdata->local->mtx); | |
2113 | __ieee80211_stop_poll(sdata); | |
2114 | mutex_unlock(&sdata->local->mtx); | |
2115 | } | |
2116 | ||
7a5158ef JB |
2117 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
2118 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 2119 | { |
bda3933a | 2120 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
21a8e9dd | 2121 | struct ieee80211_supported_band *sband; |
471b3efd | 2122 | u32 changed = 0; |
7a5158ef JB |
2123 | bool use_protection; |
2124 | bool use_short_preamble; | |
2125 | bool use_short_slot; | |
2126 | ||
21a8e9dd MSS |
2127 | sband = ieee80211_get_sband(sdata); |
2128 | if (!sband) | |
2129 | return changed; | |
2130 | ||
7a5158ef JB |
2131 | if (erp_valid) { |
2132 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
2133 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
2134 | } else { | |
2135 | use_protection = false; | |
2136 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
2137 | } | |
2138 | ||
2139 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
21a8e9dd | 2140 | if (sband->band == NL80211_BAND_5GHZ) |
43d35343 | 2141 | use_short_slot = true; |
5628221c | 2142 | |
471b3efd | 2143 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
2144 | bss_conf->use_cts_prot = use_protection; |
2145 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 2146 | } |
7e9ed188 | 2147 | |
d43c7b37 | 2148 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 2149 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 2150 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 2151 | } |
d9430a32 | 2152 | |
7a5158ef | 2153 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
2154 | bss_conf->use_short_slot = use_short_slot; |
2155 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
2156 | } |
2157 | ||
2158 | return changed; | |
2159 | } | |
2160 | ||
f698d856 | 2161 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 2162 | struct cfg80211_bss *cbss, |
ae5eb026 | 2163 | u32 bss_info_changed) |
f0706e82 | 2164 | { |
0c1ad2ca | 2165 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 2166 | struct ieee80211_local *local = sdata->local; |
68542962 | 2167 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 2168 | |
ae5eb026 | 2169 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 2170 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 2171 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 2172 | |
7ccc8bd7 | 2173 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 2174 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 2175 | |
0c1ad2ca JB |
2176 | sdata->u.mgd.associated = cbss; |
2177 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 2178 | |
e8e4f528 JB |
2179 | ieee80211_check_rate_mask(sdata); |
2180 | ||
17e4ec14 JM |
2181 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
2182 | ||
b115b972 JD |
2183 | if (sdata->vif.p2p || |
2184 | sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { | |
9caf0364 | 2185 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 2186 | |
9caf0364 JB |
2187 | rcu_read_lock(); |
2188 | ies = rcu_dereference(cbss->ies); | |
2189 | if (ies) { | |
9caf0364 JB |
2190 | int ret; |
2191 | ||
2192 | ret = cfg80211_get_p2p_attr( | |
2193 | ies->data, ies->len, | |
2194 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
2195 | (u8 *) &bss_conf->p2p_noa_attr, |
2196 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 2197 | if (ret >= 2) { |
67baf663 JD |
2198 | sdata->u.mgd.p2p_noa_index = |
2199 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 2200 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 2201 | } |
488dd7b5 | 2202 | } |
9caf0364 | 2203 | rcu_read_unlock(); |
488dd7b5 JB |
2204 | } |
2205 | ||
b291ba11 | 2206 | /* just to be sure */ |
925e64c3 | 2207 | ieee80211_stop_poll(sdata); |
b291ba11 | 2208 | |
9ac19a90 | 2209 | ieee80211_led_assoc(local, 1); |
9306102e | 2210 | |
989c6505 | 2211 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
2212 | /* |
2213 | * If the AP is buggy we may get here with no DTIM period | |
2214 | * known, so assume it's 1 which is the only safe assumption | |
2215 | * in that case, although if the TIM IE is broken powersave | |
2216 | * probably just won't work at all. | |
2217 | */ | |
2218 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 2219 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 2220 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 2221 | } else { |
817cee76 | 2222 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 2223 | bss_conf->dtim_period = 0; |
826262c3 | 2224 | } |
e5b900d2 | 2225 | |
68542962 | 2226 | bss_conf->assoc = 1; |
9cef8737 | 2227 | |
a97c13c3 | 2228 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 2229 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 2230 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
2231 | bss_info_changed |= BSS_CHANGED_CQM; |
2232 | ||
68542962 | 2233 | /* Enable ARP filtering */ |
0f19b41e | 2234 | if (bss_conf->arp_addr_cnt) |
68542962 | 2235 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2236 | |
ae5eb026 | 2237 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 2238 | |
056508dc | 2239 | mutex_lock(&local->iflist_mtx); |
4a733ef1 | 2240 | ieee80211_recalc_ps(local); |
056508dc | 2241 | mutex_unlock(&local->iflist_mtx); |
e0cb686f | 2242 | |
04ecd257 | 2243 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
2244 | ieee80211_recalc_ps_vif(sdata); |
2245 | ||
9ac19a90 | 2246 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
2247 | } |
2248 | ||
e69e95db | 2249 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
2250 | u16 stype, u16 reason, bool tx, |
2251 | u8 *frame_buf) | |
aa458d17 | 2252 | { |
46900298 | 2253 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 2254 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 2255 | u32 changed = 0; |
aa458d17 | 2256 | |
8d61ffa5 | 2257 | sdata_assert_lock(sdata); |
77fdaa12 | 2258 | |
37ad3888 JB |
2259 | if (WARN_ON_ONCE(tx && !frame_buf)) |
2260 | return; | |
2261 | ||
b291ba11 JB |
2262 | if (WARN_ON(!ifmgd->associated)) |
2263 | return; | |
2264 | ||
79543d8e DS |
2265 | ieee80211_stop_poll(sdata); |
2266 | ||
77fdaa12 | 2267 | ifmgd->associated = NULL; |
aa458d17 TW |
2268 | netif_carrier_off(sdata->dev); |
2269 | ||
88bc40e8 EP |
2270 | /* |
2271 | * if we want to get out of ps before disassoc (why?) we have | |
2272 | * to do it before sending disassoc, as otherwise the null-packet | |
2273 | * won't be valid. | |
2274 | */ | |
2275 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
2276 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2277 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
2278 | } | |
2279 | local->ps_sdata = NULL; | |
2280 | ||
ab095877 EP |
2281 | /* disable per-vif ps */ |
2282 | ieee80211_recalc_ps_vif(sdata); | |
2283 | ||
14f2ae83 EG |
2284 | /* make sure ongoing transmission finishes */ |
2285 | synchronize_net(); | |
2286 | ||
3b24f4c6 EG |
2287 | /* |
2288 | * drop any frame before deauth/disassoc, this can be data or | |
2289 | * management frame. Since we are disconnecting, we should not | |
2290 | * insist sending these frames which can take time and delay | |
2291 | * the disconnection and possible the roaming. | |
2292 | */ | |
f823981e | 2293 | if (tx) |
3b24f4c6 | 2294 | ieee80211_flush_queues(local, sdata, true); |
f823981e | 2295 | |
37ad3888 | 2296 | /* deauthenticate/disassociate now */ |
94ba9271 | 2297 | if (tx || frame_buf) { |
94ba9271 IP |
2298 | /* |
2299 | * In multi channel scenarios guarantee that the virtual | |
2300 | * interface is granted immediate airtime to transmit the | |
2301 | * deauthentication frame by calling mgd_prepare_tx, if the | |
2302 | * driver requested so. | |
2303 | */ | |
2304 | if (ieee80211_hw_check(&local->hw, DEAUTH_NEED_MGD_TX_PREP) && | |
2305 | !ifmgd->have_beacon) | |
d4e36e55 | 2306 | drv_mgd_prepare_tx(sdata->local, sdata, 0); |
94ba9271 | 2307 | |
4b08d1b6 JB |
2308 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, |
2309 | ifmgd->bssid, stype, reason, | |
2310 | tx, frame_buf); | |
94ba9271 | 2311 | } |
37ad3888 | 2312 | |
3b24f4c6 | 2313 | /* flush out frame - make sure the deauth was actually sent */ |
37ad3888 | 2314 | if (tx) |
3b24f4c6 | 2315 | ieee80211_flush_queues(local, sdata, false); |
37ad3888 | 2316 | |
88a9e31c | 2317 | /* clear bssid only after building the needed mgmt frames */ |
c84a67a2 | 2318 | eth_zero_addr(ifmgd->bssid); |
88a9e31c | 2319 | |
37ad3888 | 2320 | /* remove AP and TDLS peers */ |
d34ba216 | 2321 | sta_info_flush(sdata); |
37ad3888 JB |
2322 | |
2323 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
2324 | changed |= ieee80211_reset_erp_info(sdata); |
2325 | ||
f5e5bf25 | 2326 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
2327 | changed |= BSS_CHANGED_ASSOC; |
2328 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 2329 | |
67baf663 JD |
2330 | ifmgd->p2p_noa_index = -1; |
2331 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
2332 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 2333 | |
dd5ecfea | 2334 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
2335 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
2336 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
2337 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
2338 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
23a1f8d4 SS |
2339 | |
2340 | /* reset MU-MIMO ownership and group data */ | |
2341 | memset(sdata->vif.bss_conf.mu_group.membership, 0, | |
2342 | sizeof(sdata->vif.bss_conf.mu_group.membership)); | |
2343 | memset(sdata->vif.bss_conf.mu_group.position, 0, | |
2344 | sizeof(sdata->vif.bss_conf.mu_group.position)); | |
2345 | changed |= BSS_CHANGED_MU_GROUPS; | |
b5a33d52 | 2346 | sdata->vif.mu_mimo_owner = false; |
413ad50a | 2347 | |
1ea6f9c0 | 2348 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 2349 | |
520eb820 KV |
2350 | del_timer_sync(&local->dynamic_ps_timer); |
2351 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
2352 | ||
68542962 | 2353 | /* Disable ARP filtering */ |
0f19b41e | 2354 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 2355 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 2356 | |
3abead59 JB |
2357 | sdata->vif.bss_conf.qos = false; |
2358 | changed |= BSS_CHANGED_QOS; | |
2359 | ||
0aaffa9b JB |
2360 | /* The BSSID (not really interesting) and HT changed */ |
2361 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 2362 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 2363 | |
3abead59 | 2364 | /* disassociated - set to defaults now */ |
cec66283 | 2365 | ieee80211_set_wmm_default(sdata, false, false); |
3abead59 | 2366 | |
b9dcf712 JB |
2367 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
2368 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
2369 | del_timer_sync(&sdata->u.mgd.timer); | |
2370 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 2371 | |
826262c3 | 2372 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
2373 | sdata->vif.bss_conf.beacon_rate = NULL; |
2374 | ||
989c6505 | 2375 | ifmgd->have_beacon = false; |
826262c3 | 2376 | |
028e8da0 | 2377 | ifmgd->flags = 0; |
34a3740d | 2378 | mutex_lock(&local->mtx); |
028e8da0 | 2379 | ieee80211_vif_release_channel(sdata); |
59af6928 MK |
2380 | |
2381 | sdata->vif.csa_active = false; | |
0c21e632 | 2382 | ifmgd->csa_waiting_bcn = false; |
f84eaa10 | 2383 | ifmgd->csa_ignored_same_chan = false; |
a46992b4 LC |
2384 | if (sdata->csa_block_tx) { |
2385 | ieee80211_wake_vif_queues(local, sdata, | |
2386 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2387 | sdata->csa_block_tx = false; | |
2388 | } | |
34a3740d | 2389 | mutex_unlock(&local->mtx); |
2475b1cc | 2390 | |
02219b3a JB |
2391 | /* existing TX TSPEC sessions no longer exist */ |
2392 | memset(ifmgd->tx_tspec, 0, sizeof(ifmgd->tx_tspec)); | |
2393 | cancel_delayed_work_sync(&ifmgd->tx_tspec_wk); | |
2394 | ||
2475b1cc | 2395 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; |
aa458d17 | 2396 | } |
f0706e82 | 2397 | |
3cf335d5 KV |
2398 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
2399 | struct ieee80211_hdr *hdr) | |
2400 | { | |
2401 | /* | |
2402 | * We can postpone the mgd.timer whenever receiving unicast frames | |
2403 | * from AP because we know that the connection is working both ways | |
2404 | * at that time. But multicast frames (and hence also beacons) must | |
2405 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
2406 | * data idle periods for sending the periodic probe request to the |
2407 | * AP we're connected to. | |
3cf335d5 | 2408 | */ |
b291ba11 JB |
2409 | if (is_multicast_ether_addr(hdr->addr1)) |
2410 | return; | |
2411 | ||
be099e82 | 2412 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 2413 | } |
f0706e82 | 2414 | |
4e5ff376 FF |
2415 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
2416 | { | |
2417 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 2418 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 2419 | |
133d40f9 | 2420 | mutex_lock(&local->mtx); |
392b9ffb SG |
2421 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
2422 | goto out; | |
4e5ff376 | 2423 | |
925e64c3 | 2424 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
2425 | |
2426 | mutex_lock(&local->iflist_mtx); | |
4a733ef1 | 2427 | ieee80211_recalc_ps(local); |
133d40f9 | 2428 | mutex_unlock(&local->iflist_mtx); |
4e5ff376 | 2429 | |
30686bf7 | 2430 | if (ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
133d40f9 | 2431 | goto out; |
4e5ff376 FF |
2432 | |
2433 | /* | |
2434 | * We've received a probe response, but are not sure whether | |
2435 | * we have or will be receiving any beacons or data, so let's | |
2436 | * schedule the timers again, just in case. | |
2437 | */ | |
2438 | ieee80211_sta_reset_beacon_monitor(sdata); | |
2439 | ||
2440 | mod_timer(&ifmgd->conn_mon_timer, | |
2441 | round_jiffies_up(jiffies + | |
2442 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 2443 | out: |
133d40f9 | 2444 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
2445 | } |
2446 | ||
02219b3a JB |
2447 | static void ieee80211_sta_tx_wmm_ac_notify(struct ieee80211_sub_if_data *sdata, |
2448 | struct ieee80211_hdr *hdr, | |
2449 | u16 tx_time) | |
2450 | { | |
2451 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
a1f2ba04 | 2452 | u16 tid = ieee80211_get_tid(hdr); |
02219b3a JB |
2453 | int ac = ieee80211_ac_from_tid(tid); |
2454 | struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; | |
2455 | unsigned long now = jiffies; | |
2456 | ||
2457 | if (likely(!tx_tspec->admitted_time)) | |
2458 | return; | |
2459 | ||
2460 | if (time_after(now, tx_tspec->time_slice_start + HZ)) { | |
2461 | tx_tspec->consumed_tx_time = 0; | |
2462 | tx_tspec->time_slice_start = now; | |
2463 | ||
2464 | if (tx_tspec->downgraded) { | |
2465 | tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; | |
2466 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | if (tx_tspec->downgraded) | |
2471 | return; | |
2472 | ||
2473 | tx_tspec->consumed_tx_time += tx_time; | |
2474 | ||
2475 | if (tx_tspec->consumed_tx_time >= tx_tspec->admitted_time) { | |
2476 | tx_tspec->downgraded = true; | |
2477 | tx_tspec->action = TX_TSPEC_ACTION_DOWNGRADE; | |
2478 | schedule_delayed_work(&ifmgd->tx_tspec_wk, 0); | |
2479 | } | |
2480 | } | |
2481 | ||
4e5ff376 | 2482 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, |
02219b3a | 2483 | struct ieee80211_hdr *hdr, bool ack, u16 tx_time) |
4e5ff376 | 2484 | { |
02219b3a JB |
2485 | ieee80211_sta_tx_wmm_ac_notify(sdata, hdr, tx_time); |
2486 | ||
75706d0e | 2487 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
2488 | return; |
2489 | ||
30b2f0be | 2490 | if (ieee80211_is_any_nullfunc(hdr->frame_control) && |
4e5ff376 | 2491 | sdata->u.mgd.probe_send_count > 0) { |
04ac3c0e | 2492 | if (ack) |
cab1c7fd | 2493 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
2494 | else |
2495 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 2496 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 2497 | return; |
4e5ff376 | 2498 | } |
cab1c7fd WD |
2499 | |
2500 | if (ack) | |
2501 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
2502 | } |
2503 | ||
45ad6834 JB |
2504 | static void ieee80211_mlme_send_probe_req(struct ieee80211_sub_if_data *sdata, |
2505 | const u8 *src, const u8 *dst, | |
2506 | const u8 *ssid, size_t ssid_len, | |
2507 | struct ieee80211_channel *channel) | |
2508 | { | |
2509 | struct sk_buff *skb; | |
2510 | ||
2511 | skb = ieee80211_build_probe_req(sdata, src, dst, (u32)-1, channel, | |
2512 | ssid, ssid_len, NULL, 0, | |
2513 | IEEE80211_PROBE_FLAG_DIRECTED); | |
2514 | if (skb) | |
2515 | ieee80211_tx_skb(sdata, skb); | |
2516 | } | |
2517 | ||
a43abf29 ML |
2518 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
2519 | { | |
2520 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2521 | const u8 *ssid; | |
f01a067d | 2522 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 2523 | u8 unicast_limit = max(1, max_probe_tries - 3); |
49ddf8e6 | 2524 | struct sta_info *sta; |
f01a067d LR |
2525 | |
2526 | /* | |
2527 | * Try sending broadcast probe requests for the last three | |
2528 | * probe requests after the first ones failed since some | |
2529 | * buggy APs only support broadcast probe requests. | |
2530 | */ | |
2531 | if (ifmgd->probe_send_count >= unicast_limit) | |
2532 | dst = NULL; | |
a43abf29 | 2533 | |
4e5ff376 FF |
2534 | /* |
2535 | * When the hardware reports an accurate Tx ACK status, it's | |
2536 | * better to send a nullfunc frame instead of a probe request, | |
2537 | * as it will kick us off the AP quickly if we aren't associated | |
2538 | * anymore. The timeout will be reset if the frame is ACKed by | |
2539 | * the AP. | |
2540 | */ | |
992e68bf SD |
2541 | ifmgd->probe_send_count++; |
2542 | ||
49ddf8e6 JB |
2543 | if (dst) { |
2544 | mutex_lock(&sdata->local->sta_mtx); | |
2545 | sta = sta_info_get(sdata, dst); | |
2546 | if (!WARN_ON(!sta)) | |
2547 | ieee80211_check_fast_rx(sta); | |
2548 | mutex_unlock(&sdata->local->sta_mtx); | |
2549 | } | |
2550 | ||
30686bf7 | 2551 | if (ieee80211_hw_check(&sdata->local->hw, REPORTS_TX_ACK_STATUS)) { |
04ac3c0e | 2552 | ifmgd->nullfunc_failed = false; |
f39b07fd SB |
2553 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) |
2554 | ifmgd->probe_send_count--; | |
2555 | else | |
2556 | ieee80211_send_nullfunc(sdata->local, sdata, false); | |
04ac3c0e | 2557 | } else { |
88c868c4 SG |
2558 | int ssid_len; |
2559 | ||
9caf0364 | 2560 | rcu_read_lock(); |
4e5ff376 | 2561 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
2562 | if (WARN_ON_ONCE(ssid == NULL)) |
2563 | ssid_len = 0; | |
2564 | else | |
2565 | ssid_len = ssid[1]; | |
2566 | ||
45ad6834 JB |
2567 | ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst, |
2568 | ssid + 2, ssid_len, | |
2569 | ifmgd->associated->channel); | |
9caf0364 | 2570 | rcu_read_unlock(); |
4e5ff376 | 2571 | } |
a43abf29 | 2572 | |
180205bd | 2573 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 2574 | run_again(sdata, ifmgd->probe_timeout); |
a43abf29 ML |
2575 | } |
2576 | ||
b291ba11 JB |
2577 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
2578 | bool beacon) | |
04de8381 | 2579 | { |
04de8381 | 2580 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 2581 | bool already = false; |
34bfc411 | 2582 | |
9607e6b6 | 2583 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
2584 | return; |
2585 | ||
8d61ffa5 | 2586 | sdata_lock(sdata); |
77fdaa12 JB |
2587 | |
2588 | if (!ifmgd->associated) | |
2589 | goto out; | |
2590 | ||
133d40f9 SG |
2591 | mutex_lock(&sdata->local->mtx); |
2592 | ||
2593 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
2594 | mutex_unlock(&sdata->local->mtx); | |
2595 | goto out; | |
2596 | } | |
2597 | ||
a13fbe54 | 2598 | if (beacon) { |
bdcbd8e0 | 2599 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
2600 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
2601 | beacon_loss_count); | |
bdcbd8e0 | 2602 | |
98f03342 | 2603 | ieee80211_cqm_beacon_loss_notify(&sdata->vif, GFP_KERNEL); |
a13fbe54 | 2604 | } |
04de8381 | 2605 | |
b291ba11 JB |
2606 | /* |
2607 | * The driver/our work has already reported this event or the | |
2608 | * connection monitoring has kicked in and we have already sent | |
2609 | * a probe request. Or maybe the AP died and the driver keeps | |
2610 | * reporting until we disassociate... | |
2611 | * | |
2612 | * In either case we have to ignore the current call to this | |
2613 | * function (except for setting the correct probe reason bit) | |
2614 | * because otherwise we would reset the timer every time and | |
2615 | * never check whether we received a probe response! | |
2616 | */ | |
392b9ffb | 2617 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
2618 | already = true; |
2619 | ||
12b5f34d EP |
2620 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
2621 | ||
133d40f9 SG |
2622 | mutex_unlock(&sdata->local->mtx); |
2623 | ||
b291ba11 JB |
2624 | if (already) |
2625 | goto out; | |
2626 | ||
4e751843 | 2627 | mutex_lock(&sdata->local->iflist_mtx); |
4a733ef1 | 2628 | ieee80211_recalc_ps(sdata->local); |
4e751843 JB |
2629 | mutex_unlock(&sdata->local->iflist_mtx); |
2630 | ||
a43abf29 ML |
2631 | ifmgd->probe_send_count = 0; |
2632 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2633 | out: |
8d61ffa5 | 2634 | sdata_unlock(sdata); |
04de8381 KV |
2635 | } |
2636 | ||
a619a4c0 JO |
2637 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2638 | struct ieee80211_vif *vif) | |
2639 | { | |
2640 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2641 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2642 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2643 | struct sk_buff *skb; |
2644 | const u8 *ssid; | |
88c868c4 | 2645 | int ssid_len; |
a619a4c0 JO |
2646 | |
2647 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2648 | return NULL; | |
2649 | ||
8d61ffa5 | 2650 | sdata_assert_lock(sdata); |
a619a4c0 | 2651 | |
d9b3b28b EP |
2652 | if (ifmgd->associated) |
2653 | cbss = ifmgd->associated; | |
2654 | else if (ifmgd->auth_data) | |
2655 | cbss = ifmgd->auth_data->bss; | |
2656 | else if (ifmgd->assoc_data) | |
2657 | cbss = ifmgd->assoc_data->bss; | |
2658 | else | |
a619a4c0 JO |
2659 | return NULL; |
2660 | ||
9caf0364 | 2661 | rcu_read_lock(); |
d9b3b28b | 2662 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
4152561f WD |
2663 | if (WARN_ONCE(!ssid || ssid[1] > IEEE80211_MAX_SSID_LEN, |
2664 | "invalid SSID element (len=%d)", ssid ? ssid[1] : -1)) | |
88c868c4 SG |
2665 | ssid_len = 0; |
2666 | else | |
2667 | ssid_len = ssid[1]; | |
2668 | ||
a344d677 | 2669 | skb = ieee80211_build_probe_req(sdata, sdata->vif.addr, cbss->bssid, |
55de908a | 2670 | (u32) -1, cbss->channel, |
6b77863b | 2671 | ssid + 2, ssid_len, |
00387f32 | 2672 | NULL, 0, IEEE80211_PROBE_FLAG_DIRECTED); |
9caf0364 | 2673 | rcu_read_unlock(); |
a619a4c0 JO |
2674 | |
2675 | return skb; | |
2676 | } | |
2677 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2678 | ||
a90faa9d EG |
2679 | static void ieee80211_report_disconnect(struct ieee80211_sub_if_data *sdata, |
2680 | const u8 *buf, size_t len, bool tx, | |
2681 | u16 reason) | |
2682 | { | |
2683 | struct ieee80211_event event = { | |
2684 | .type = MLME_EVENT, | |
2685 | .u.mlme.data = tx ? DEAUTH_TX_EVENT : DEAUTH_RX_EVENT, | |
2686 | .u.mlme.reason = reason, | |
2687 | }; | |
2688 | ||
2689 | if (tx) | |
2690 | cfg80211_tx_mlme_mgmt(sdata->dev, buf, len); | |
2691 | else | |
2692 | cfg80211_rx_mlme_mgmt(sdata->dev, buf, len); | |
2693 | ||
2694 | drv_event_callback(sdata->local, sdata, &event); | |
2695 | } | |
2696 | ||
eef9e54c | 2697 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 | 2698 | { |
59af6928 | 2699 | struct ieee80211_local *local = sdata->local; |
1e4dcd01 | 2700 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 2701 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6c18b27d | 2702 | bool tx; |
1e4dcd01 | 2703 | |
8d61ffa5 | 2704 | sdata_lock(sdata); |
1e4dcd01 | 2705 | if (!ifmgd->associated) { |
8d61ffa5 | 2706 | sdata_unlock(sdata); |
1e4dcd01 JO |
2707 | return; |
2708 | } | |
2709 | ||
6c18b27d EG |
2710 | tx = !sdata->csa_block_tx; |
2711 | ||
20eb7ea9 DS |
2712 | /* AP is probably out of range (or not reachable for another reason) so |
2713 | * remove the bss struct for that AP. | |
2714 | */ | |
2715 | cfg80211_unlink_bss(local->hw.wiphy, ifmgd->associated); | |
2716 | ||
37ad3888 JB |
2717 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2718 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
6c18b27d | 2719 | tx, frame_buf); |
59af6928 | 2720 | mutex_lock(&local->mtx); |
7578d575 | 2721 | sdata->vif.csa_active = false; |
0c21e632 | 2722 | ifmgd->csa_waiting_bcn = false; |
a46992b4 LC |
2723 | if (sdata->csa_block_tx) { |
2724 | ieee80211_wake_vif_queues(local, sdata, | |
2725 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
2726 | sdata->csa_block_tx = false; | |
2727 | } | |
59af6928 | 2728 | mutex_unlock(&local->mtx); |
7da7cc1d | 2729 | |
6c18b27d | 2730 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), tx, |
a90faa9d EG |
2731 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY); |
2732 | ||
8d61ffa5 | 2733 | sdata_unlock(sdata); |
1e4dcd01 JO |
2734 | } |
2735 | ||
cc74c0c7 | 2736 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2737 | { |
2738 | struct ieee80211_sub_if_data *sdata = | |
2739 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2740 | u.mgd.beacon_connection_loss_work); |
a85e1d55 | 2741 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
a85e1d55 | 2742 | |
976bd9ef JB |
2743 | if (ifmgd->associated) |
2744 | ifmgd->beacon_loss_count++; | |
b291ba11 | 2745 | |
682bd38b | 2746 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2747 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2748 | ifmgd->bssid); | |
eef9e54c | 2749 | __ieee80211_disconnect(sdata); |
882a7c69 | 2750 | } else { |
1e4dcd01 | 2751 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2752 | } |
2753 | } | |
2754 | ||
2755 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2756 | { | |
2757 | struct ieee80211_sub_if_data *sdata = | |
2758 | container_of(work, struct ieee80211_sub_if_data, | |
2759 | u.mgd.csa_connection_drop_work); | |
2760 | ||
eef9e54c | 2761 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2762 | } |
2763 | ||
04de8381 KV |
2764 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2765 | { | |
2766 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2767 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2768 | |
b5878a2d JB |
2769 | trace_api_beacon_loss(sdata); |
2770 | ||
682bd38b | 2771 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2772 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2773 | } |
2774 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2775 | ||
1e4dcd01 JO |
2776 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2777 | { | |
2778 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2779 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2780 | ||
b5878a2d JB |
2781 | trace_api_connection_loss(sdata); |
2782 | ||
682bd38b | 2783 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2784 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2785 | } | |
2786 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2787 | ||
2788 | ||
66e67e41 JB |
2789 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2790 | bool assoc) | |
2791 | { | |
2792 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2793 | ||
8d61ffa5 | 2794 | sdata_assert_lock(sdata); |
66e67e41 | 2795 | |
66e67e41 | 2796 | if (!assoc) { |
c1e140bf EG |
2797 | /* |
2798 | * we are not authenticated yet, the only timer that could be | |
2799 | * running is the timeout for the authentication response which | |
2800 | * which is not relevant anymore. | |
2801 | */ | |
2802 | del_timer_sync(&sdata->u.mgd.timer); | |
66e67e41 JB |
2803 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); |
2804 | ||
c84a67a2 | 2805 | eth_zero_addr(sdata->u.mgd.bssid); |
66e67e41 | 2806 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
028e8da0 | 2807 | sdata->u.mgd.flags = 0; |
34a3740d | 2808 | mutex_lock(&sdata->local->mtx); |
55de908a | 2809 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2810 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2811 | } |
2812 | ||
5b112d3d | 2813 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2814 | kfree(auth_data); |
2815 | sdata->u.mgd.auth_data = NULL; | |
2816 | } | |
2817 | ||
c9c99f89 | 2818 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
e6f462df | 2819 | bool assoc, bool abandon) |
c9c99f89 JB |
2820 | { |
2821 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2822 | ||
2823 | sdata_assert_lock(sdata); | |
2824 | ||
2825 | if (!assoc) { | |
2826 | /* | |
2827 | * we are not associated yet, the only timer that could be | |
2828 | * running is the timeout for the association response which | |
2829 | * which is not relevant anymore. | |
2830 | */ | |
2831 | del_timer_sync(&sdata->u.mgd.timer); | |
2832 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2833 | ||
2834 | eth_zero_addr(sdata->u.mgd.bssid); | |
2835 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
2836 | sdata->u.mgd.flags = 0; | |
b5a33d52 SS |
2837 | sdata->vif.mu_mimo_owner = false; |
2838 | ||
c9c99f89 JB |
2839 | mutex_lock(&sdata->local->mtx); |
2840 | ieee80211_vif_release_channel(sdata); | |
2841 | mutex_unlock(&sdata->local->mtx); | |
e6f462df JB |
2842 | |
2843 | if (abandon) | |
2844 | cfg80211_abandon_assoc(sdata->dev, assoc_data->bss); | |
c9c99f89 JB |
2845 | } |
2846 | ||
2847 | kfree(assoc_data); | |
2848 | sdata->u.mgd.assoc_data = NULL; | |
2849 | } | |
2850 | ||
66e67e41 JB |
2851 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
2852 | struct ieee80211_mgmt *mgmt, size_t len) | |
2853 | { | |
1672c0e3 | 2854 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2855 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2856 | u8 *pos; | |
2857 | struct ieee802_11_elems elems; | |
1672c0e3 | 2858 | u32 tx_flags = 0; |
66e67e41 JB |
2859 | |
2860 | pos = mgmt->u.auth.variable; | |
4abb52a4 SS |
2861 | ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems, |
2862 | mgmt->bssid, auth_data->bss->bssid); | |
66e67e41 JB |
2863 | if (!elems.challenge) |
2864 | return; | |
2865 | auth_data->expected_transaction = 4; | |
d4e36e55 | 2866 | drv_mgd_prepare_tx(sdata->local, sdata, 0); |
30686bf7 | 2867 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
1672c0e3 JB |
2868 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | |
2869 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2870 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2871 | elems.challenge - 2, elems.challenge_len + 2, |
2872 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2873 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2874 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2875 | } |
2876 | ||
fc107a93 JM |
2877 | static bool ieee80211_mark_sta_auth(struct ieee80211_sub_if_data *sdata, |
2878 | const u8 *bssid) | |
2879 | { | |
efb543e6 | 2880 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
fc107a93 | 2881 | struct sta_info *sta; |
33483a6b | 2882 | bool result = true; |
fc107a93 | 2883 | |
efb543e6 JM |
2884 | sdata_info(sdata, "authenticated\n"); |
2885 | ifmgd->auth_data->done = true; | |
2886 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
2887 | ifmgd->auth_data->timeout_started = true; | |
2888 | run_again(sdata, ifmgd->auth_data->timeout); | |
2889 | ||
fc107a93 JM |
2890 | /* move station state to auth */ |
2891 | mutex_lock(&sdata->local->sta_mtx); | |
2892 | sta = sta_info_get(sdata, bssid); | |
2893 | if (!sta) { | |
2894 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
33483a6b WY |
2895 | result = false; |
2896 | goto out; | |
fc107a93 JM |
2897 | } |
2898 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
2899 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); | |
33483a6b WY |
2900 | result = false; |
2901 | goto out; | |
fc107a93 | 2902 | } |
fc107a93 | 2903 | |
33483a6b WY |
2904 | out: |
2905 | mutex_unlock(&sdata->local->sta_mtx); | |
2906 | return result; | |
fc107a93 JM |
2907 | } |
2908 | ||
8d61ffa5 JB |
2909 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2910 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2911 | { |
2912 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2913 | u8 bssid[ETH_ALEN]; | |
2914 | u16 auth_alg, auth_transaction, status_code; | |
a9409093 EG |
2915 | struct ieee80211_event event = { |
2916 | .type = MLME_EVENT, | |
2917 | .u.mlme.data = AUTH_EVENT, | |
2918 | }; | |
66e67e41 | 2919 | |
8d61ffa5 | 2920 | sdata_assert_lock(sdata); |
66e67e41 JB |
2921 | |
2922 | if (len < 24 + 6) | |
8d61ffa5 | 2923 | return; |
66e67e41 JB |
2924 | |
2925 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2926 | return; |
66e67e41 JB |
2927 | |
2928 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2929 | ||
b203ca39 | 2930 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2931 | return; |
66e67e41 JB |
2932 | |
2933 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2934 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2935 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2936 | ||
2937 | if (auth_alg != ifmgd->auth_data->algorithm || | |
efb543e6 JM |
2938 | (auth_alg != WLAN_AUTH_SAE && |
2939 | auth_transaction != ifmgd->auth_data->expected_transaction) || | |
2940 | (auth_alg == WLAN_AUTH_SAE && | |
2941 | (auth_transaction < ifmgd->auth_data->expected_transaction || | |
2942 | auth_transaction > 2))) { | |
0f4126e8 JM |
2943 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", |
2944 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2945 | auth_transaction, | |
2946 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2947 | return; |
0f4126e8 | 2948 | } |
66e67e41 JB |
2949 | |
2950 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2951 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2952 | mgmt->sa, status_code); | |
dac211ec | 2953 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2954 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
a9409093 EG |
2955 | event.u.mlme.status = MLME_DENIED; |
2956 | event.u.mlme.reason = status_code; | |
2957 | drv_event_callback(sdata->local, sdata, &event); | |
8d61ffa5 | 2958 | return; |
66e67e41 JB |
2959 | } |
2960 | ||
2961 | switch (ifmgd->auth_data->algorithm) { | |
2962 | case WLAN_AUTH_OPEN: | |
2963 | case WLAN_AUTH_LEAP: | |
2964 | case WLAN_AUTH_FT: | |
6b8ece3a | 2965 | case WLAN_AUTH_SAE: |
dbc0c2cb JM |
2966 | case WLAN_AUTH_FILS_SK: |
2967 | case WLAN_AUTH_FILS_SK_PFS: | |
2968 | case WLAN_AUTH_FILS_PK: | |
66e67e41 JB |
2969 | break; |
2970 | case WLAN_AUTH_SHARED_KEY: | |
2971 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2972 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2973 | /* need another frame */ | |
8d61ffa5 | 2974 | return; |
66e67e41 JB |
2975 | } |
2976 | break; | |
2977 | default: | |
2978 | WARN_ONCE(1, "invalid auth alg %d", | |
2979 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2980 | return; |
66e67e41 JB |
2981 | } |
2982 | ||
a9409093 EG |
2983 | event.u.mlme.status = MLME_SUCCESS; |
2984 | drv_event_callback(sdata->local, sdata, &event); | |
efb543e6 JM |
2985 | if (ifmgd->auth_data->algorithm != WLAN_AUTH_SAE || |
2986 | (auth_transaction == 2 && | |
2987 | ifmgd->auth_data->expected_transaction == 2)) { | |
2988 | if (!ieee80211_mark_sta_auth(sdata, bssid)) | |
0daa63ed | 2989 | return; /* ignore frame -- wait for timeout */ |
efb543e6 JM |
2990 | } else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2991 | auth_transaction == 2) { | |
2992 | sdata_info(sdata, "SAE peer confirmed\n"); | |
2993 | ifmgd->auth_data->peer_confirmed = true; | |
6b8ece3a JM |
2994 | } |
2995 | ||
6ff57cf8 | 2996 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
66e67e41 JB |
2997 | } |
2998 | ||
dfa1ad29 CO |
2999 | #define case_WLAN(type) \ |
3000 | case WLAN_REASON_##type: return #type | |
3001 | ||
79c92ca4 | 3002 | const char *ieee80211_get_reason_code_string(u16 reason_code) |
dfa1ad29 CO |
3003 | { |
3004 | switch (reason_code) { | |
3005 | case_WLAN(UNSPECIFIED); | |
3006 | case_WLAN(PREV_AUTH_NOT_VALID); | |
3007 | case_WLAN(DEAUTH_LEAVING); | |
3008 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
3009 | case_WLAN(DISASSOC_AP_BUSY); | |
3010 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
3011 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
3012 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
3013 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
3014 | case_WLAN(DISASSOC_BAD_POWER); | |
3015 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
3016 | case_WLAN(INVALID_IE); | |
3017 | case_WLAN(MIC_FAILURE); | |
3018 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
3019 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
3020 | case_WLAN(IE_DIFFERENT); | |
3021 | case_WLAN(INVALID_GROUP_CIPHER); | |
3022 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
3023 | case_WLAN(INVALID_AKMP); | |
3024 | case_WLAN(UNSUPP_RSN_VERSION); | |
3025 | case_WLAN(INVALID_RSN_IE_CAP); | |
3026 | case_WLAN(IEEE8021X_FAILED); | |
3027 | case_WLAN(CIPHER_SUITE_REJECTED); | |
3028 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
3029 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
3030 | case_WLAN(DISASSOC_LOW_ACK); | |
3031 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
3032 | case_WLAN(QSTA_LEAVE_QBSS); | |
3033 | case_WLAN(QSTA_NOT_USE); | |
3034 | case_WLAN(QSTA_REQUIRE_SETUP); | |
3035 | case_WLAN(QSTA_TIMEOUT); | |
3036 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
3037 | case_WLAN(MESH_PEER_CANCELED); | |
3038 | case_WLAN(MESH_MAX_PEERS); | |
3039 | case_WLAN(MESH_CONFIG); | |
3040 | case_WLAN(MESH_CLOSE); | |
3041 | case_WLAN(MESH_MAX_RETRIES); | |
3042 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
3043 | case_WLAN(MESH_INVALID_GTK); | |
3044 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
3045 | case_WLAN(MESH_INVALID_SECURITY); | |
3046 | case_WLAN(MESH_PATH_ERROR); | |
3047 | case_WLAN(MESH_PATH_NOFORWARD); | |
3048 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
3049 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
3050 | case_WLAN(MESH_CHAN_REGULATORY); | |
3051 | case_WLAN(MESH_CHAN); | |
3052 | default: return "<unknown>"; | |
3053 | } | |
3054 | } | |
66e67e41 | 3055 | |
8d61ffa5 JB |
3056 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
3057 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 3058 | { |
46900298 | 3059 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
c9c99f89 | 3060 | u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); |
f0706e82 | 3061 | |
8d61ffa5 | 3062 | sdata_assert_lock(sdata); |
66e67e41 | 3063 | |
f4ea83dd | 3064 | if (len < 24 + 2) |
8d61ffa5 | 3065 | return; |
f0706e82 | 3066 | |
79c92ca4 YW |
3067 | if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) { |
3068 | ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code); | |
3069 | return; | |
3070 | } | |
3071 | ||
c9c99f89 JB |
3072 | if (ifmgd->associated && |
3073 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) { | |
3074 | const u8 *bssid = ifmgd->associated->bssid; | |
77fdaa12 | 3075 | |
c9c99f89 JB |
3076 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
3077 | bssid, reason_code, | |
3078 | ieee80211_get_reason_code_string(reason_code)); | |
f0706e82 | 3079 | |
c9c99f89 | 3080 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
f0706e82 | 3081 | |
c9c99f89 JB |
3082 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, |
3083 | reason_code); | |
3084 | return; | |
3085 | } | |
77fdaa12 | 3086 | |
c9c99f89 JB |
3087 | if (ifmgd->assoc_data && |
3088 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { | |
3089 | const u8 *bssid = ifmgd->assoc_data->bss->bssid; | |
37ad3888 | 3090 | |
c9c99f89 JB |
3091 | sdata_info(sdata, |
3092 | "deauthenticated from %pM while associating (Reason: %u=%s)\n", | |
3093 | bssid, reason_code, | |
3094 | ieee80211_get_reason_code_string(reason_code)); | |
3095 | ||
e6f462df | 3096 | ieee80211_destroy_assoc_data(sdata, false, true); |
c9c99f89 JB |
3097 | |
3098 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); | |
3099 | return; | |
3100 | } | |
f0706e82 JB |
3101 | } |
3102 | ||
3103 | ||
8d61ffa5 JB |
3104 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
3105 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 3106 | { |
46900298 | 3107 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
3108 | u16 reason_code; |
3109 | ||
8d61ffa5 | 3110 | sdata_assert_lock(sdata); |
77fdaa12 | 3111 | |
66e67e41 | 3112 | if (len < 24 + 2) |
8d61ffa5 | 3113 | return; |
77fdaa12 | 3114 | |
66e67e41 | 3115 | if (!ifmgd->associated || |
b203ca39 | 3116 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 3117 | return; |
f0706e82 JB |
3118 | |
3119 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
3120 | ||
79c92ca4 YW |
3121 | if (!ether_addr_equal(mgmt->bssid, mgmt->sa)) { |
3122 | ieee80211_tdls_handle_disconnect(sdata, mgmt->sa, reason_code); | |
3123 | return; | |
3124 | } | |
3125 | ||
68506e9a AM |
3126 | sdata_info(sdata, "disassociated from %pM (Reason: %u=%s)\n", |
3127 | mgmt->sa, reason_code, | |
3128 | ieee80211_get_reason_code_string(reason_code)); | |
f0706e82 | 3129 | |
37ad3888 JB |
3130 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
3131 | ||
a90faa9d | 3132 | ieee80211_report_disconnect(sdata, (u8 *)mgmt, len, false, reason_code); |
f0706e82 JB |
3133 | } |
3134 | ||
c74d084f CL |
3135 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
3136 | u8 *supp_rates, unsigned int supp_rates_len, | |
3137 | u32 *rates, u32 *basic_rates, | |
3138 | bool *have_higher_than_11mbit, | |
2103dec1 | 3139 | int *min_rate, int *min_rate_index, |
44f6d42c | 3140 | int shift) |
c74d084f CL |
3141 | { |
3142 | int i, j; | |
3143 | ||
3144 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 3145 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
3146 | bool is_basic = !!(supp_rates[i] & 0x80); |
3147 | ||
2103dec1 | 3148 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
3149 | *have_higher_than_11mbit = true; |
3150 | ||
3151 | /* | |
a6289d3f JB |
3152 | * Skip HT and VHT BSS membership selectors since they're not |
3153 | * rates. | |
c74d084f | 3154 | * |
a6289d3f | 3155 | * Note: Even though the membership selector and the basic |
c74d084f CL |
3156 | * rate flag share the same bit, they are not exactly |
3157 | * the same. | |
3158 | */ | |
a6289d3f JB |
3159 | if (supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY) || |
3160 | supp_rates[i] == (0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) | |
c74d084f CL |
3161 | continue; |
3162 | ||
3163 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
3164 | struct ieee80211_rate *br; |
3165 | int brate; | |
3166 | ||
3167 | br = &sband->bitrates[j]; | |
2103dec1 SW |
3168 | |
3169 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
3170 | if (brate == rate) { | |
c74d084f CL |
3171 | *rates |= BIT(j); |
3172 | if (is_basic) | |
3173 | *basic_rates |= BIT(j); | |
2103dec1 SW |
3174 | if ((rate * 5) < *min_rate) { |
3175 | *min_rate = rate * 5; | |
c74d084f CL |
3176 | *min_rate_index = j; |
3177 | } | |
3178 | break; | |
3179 | } | |
3180 | } | |
3181 | } | |
3182 | } | |
f0706e82 | 3183 | |
55ebd6e6 EG |
3184 | static bool ieee80211_twt_req_supported(const struct sta_info *sta, |
3185 | const struct ieee802_11_elems *elems) | |
3186 | { | |
3187 | if (elems->ext_capab_len < 10) | |
3188 | return false; | |
3189 | ||
3190 | if (!(elems->ext_capab[9] & WLAN_EXT_CAPA10_TWT_RESPONDER_SUPPORT)) | |
3191 | return false; | |
3192 | ||
3193 | return sta->sta.he_cap.he_cap_elem.mac_cap_info[0] & | |
3194 | IEEE80211_HE_MAC_CAP0_TWT_RES; | |
3195 | } | |
3196 | ||
c9d3245e JC |
3197 | static int ieee80211_recalc_twt_req(struct ieee80211_sub_if_data *sdata, |
3198 | struct sta_info *sta, | |
3199 | struct ieee802_11_elems *elems) | |
3200 | { | |
3201 | bool twt = ieee80211_twt_req_supported(sta, elems); | |
3202 | ||
3203 | if (sdata->vif.bss_conf.twt_requester != twt) { | |
3204 | sdata->vif.bss_conf.twt_requester = twt; | |
3205 | return BSS_CHANGED_TWT; | |
3206 | } | |
3207 | return 0; | |
3208 | } | |
3209 | ||
66e67e41 JB |
3210 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, |
3211 | struct cfg80211_bss *cbss, | |
f61d7884 JB |
3212 | struct ieee80211_mgmt *mgmt, size_t len, |
3213 | struct ieee802_11_elems *elems) | |
f0706e82 | 3214 | { |
46900298 | 3215 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 3216 | struct ieee80211_local *local = sdata->local; |
8318d78a | 3217 | struct ieee80211_supported_band *sband; |
f0706e82 | 3218 | struct sta_info *sta; |
af6b6374 | 3219 | u16 capab_info, aid; |
bda3933a | 3220 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
3221 | const struct cfg80211_bss_ies *bss_ies = NULL; |
3222 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 3223 | u32 changed = 0; |
c74d084f | 3224 | int err; |
35d865af | 3225 | bool ret; |
f0706e82 | 3226 | |
af6b6374 | 3227 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 3228 | |
f0706e82 | 3229 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 3230 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 3231 | |
c7c477b5 JB |
3232 | /* |
3233 | * The 5 MSB of the AID field are reserved | |
3234 | * (802.11-2016 9.4.1.8 AID field) | |
3235 | */ | |
3236 | aid &= 0x7ff; | |
1dd84aa2 | 3237 | |
05cb9108 JB |
3238 | ifmgd->broken_ap = false; |
3239 | ||
3240 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
3241 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
3242 | aid); | |
05cb9108 JB |
3243 | aid = 0; |
3244 | ifmgd->broken_ap = true; | |
3245 | } | |
3246 | ||
f61d7884 | 3247 | if (!elems->supp_rates) { |
bdcbd8e0 | 3248 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 3249 | return false; |
f0706e82 JB |
3250 | } |
3251 | ||
46900298 | 3252 | ifmgd->aid = aid; |
9041c1fa | 3253 | ifmgd->tdls_chan_switch_prohibited = |
f61d7884 JB |
3254 | elems->ext_capab && elems->ext_capab_len >= 5 && |
3255 | (elems->ext_capab[4] & WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED); | |
f0706e82 | 3256 | |
35d865af JB |
3257 | /* |
3258 | * Some APs are erroneously not including some information in their | |
3259 | * (re)association response frames. Try to recover by using the data | |
3260 | * from the beacon or probe response. This seems to afflict mobile | |
3261 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
3262 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
3263 | */ | |
f61d7884 | 3264 | if ((assoc_data->wmm && !elems->wmm_param) || |
35d865af | 3265 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
f61d7884 | 3266 | (!elems->ht_cap_elem || !elems->ht_operation)) || |
35d865af | 3267 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
f61d7884 | 3268 | (!elems->vht_cap_elem || !elems->vht_operation))) { |
35d865af JB |
3269 | const struct cfg80211_bss_ies *ies; |
3270 | struct ieee802_11_elems bss_elems; | |
3271 | ||
3272 | rcu_read_lock(); | |
3273 | ies = rcu_dereference(cbss->ies); | |
3274 | if (ies) | |
3275 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
3276 | GFP_ATOMIC); | |
3277 | rcu_read_unlock(); | |
3278 | if (!bss_ies) | |
3279 | return false; | |
3280 | ||
3281 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
4abb52a4 SS |
3282 | false, &bss_elems, |
3283 | mgmt->bssid, | |
3284 | assoc_data->bss->bssid); | |
35d865af | 3285 | if (assoc_data->wmm && |
f61d7884 JB |
3286 | !elems->wmm_param && bss_elems.wmm_param) { |
3287 | elems->wmm_param = bss_elems.wmm_param; | |
35d865af JB |
3288 | sdata_info(sdata, |
3289 | "AP bug: WMM param missing from AssocResp\n"); | |
3290 | } | |
3291 | ||
3292 | /* | |
3293 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
3294 | * have to include the IEs in the (re)association response. | |
3295 | */ | |
f61d7884 | 3296 | if (!elems->ht_cap_elem && bss_elems.ht_cap_elem && |
35d865af | 3297 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { |
f61d7884 | 3298 | elems->ht_cap_elem = bss_elems.ht_cap_elem; |
35d865af JB |
3299 | sdata_info(sdata, |
3300 | "AP bug: HT capability missing from AssocResp\n"); | |
3301 | } | |
f61d7884 | 3302 | if (!elems->ht_operation && bss_elems.ht_operation && |
35d865af | 3303 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { |
f61d7884 | 3304 | elems->ht_operation = bss_elems.ht_operation; |
35d865af JB |
3305 | sdata_info(sdata, |
3306 | "AP bug: HT operation missing from AssocResp\n"); | |
3307 | } | |
f61d7884 | 3308 | if (!elems->vht_cap_elem && bss_elems.vht_cap_elem && |
35d865af | 3309 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { |
f61d7884 | 3310 | elems->vht_cap_elem = bss_elems.vht_cap_elem; |
35d865af JB |
3311 | sdata_info(sdata, |
3312 | "AP bug: VHT capa missing from AssocResp\n"); | |
3313 | } | |
f61d7884 | 3314 | if (!elems->vht_operation && bss_elems.vht_operation && |
35d865af | 3315 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { |
f61d7884 | 3316 | elems->vht_operation = bss_elems.vht_operation; |
35d865af JB |
3317 | sdata_info(sdata, |
3318 | "AP bug: VHT operation missing from AssocResp\n"); | |
3319 | } | |
3320 | } | |
3321 | ||
30eb1dc2 JB |
3322 | /* |
3323 | * We previously checked these in the beacon/probe response, so | |
3324 | * they should be present here. This is just a safety net. | |
3325 | */ | |
3326 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
f61d7884 | 3327 | (!elems->wmm_param || !elems->ht_cap_elem || !elems->ht_operation)) { |
30eb1dc2 | 3328 | sdata_info(sdata, |
35d865af JB |
3329 | "HT AP is missing WMM params or HT capability/operation\n"); |
3330 | ret = false; | |
3331 | goto out; | |
30eb1dc2 JB |
3332 | } |
3333 | ||
3334 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
f61d7884 | 3335 | (!elems->vht_cap_elem || !elems->vht_operation)) { |
30eb1dc2 | 3336 | sdata_info(sdata, |
35d865af JB |
3337 | "VHT AP is missing VHT capability/operation\n"); |
3338 | ret = false; | |
3339 | goto out; | |
30eb1dc2 JB |
3340 | } |
3341 | ||
2a33bee2 GE |
3342 | mutex_lock(&sdata->local->sta_mtx); |
3343 | /* | |
3344 | * station info was already allocated and inserted before | |
3345 | * the association and should be available to us | |
3346 | */ | |
7852e361 | 3347 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
3348 | if (WARN_ON(!sta)) { |
3349 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3350 | ret = false; |
3351 | goto out; | |
77fdaa12 | 3352 | } |
05e5e883 | 3353 | |
21a8e9dd MSS |
3354 | sband = ieee80211_get_sband(sdata); |
3355 | if (!sband) { | |
3356 | mutex_unlock(&sdata->local->sta_mtx); | |
3357 | ret = false; | |
3358 | goto out; | |
3359 | } | |
f709fc69 | 3360 | |
41cbb0f5 | 3361 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && |
f61d7884 | 3362 | (!elems->he_cap || !elems->he_operation)) { |
41cbb0f5 LC |
3363 | mutex_unlock(&sdata->local->sta_mtx); |
3364 | sdata_info(sdata, | |
3365 | "HE AP is missing HE capability/operation\n"); | |
3366 | ret = false; | |
3367 | goto out; | |
3368 | } | |
3369 | ||
30eb1dc2 | 3370 | /* Set up internal HT/VHT capabilities */ |
f61d7884 | 3371 | if (elems->ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 3372 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
f61d7884 | 3373 | elems->ht_cap_elem, sta); |
64f68e5d | 3374 | |
f61d7884 | 3375 | if (elems->vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
818255ea | 3376 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, |
f61d7884 | 3377 | elems->vht_cap_elem, sta); |
818255ea | 3378 | |
f61d7884 JB |
3379 | if (elems->he_operation && !(ifmgd->flags & IEEE80211_STA_DISABLE_HE) && |
3380 | elems->he_cap) { | |
41cbb0f5 | 3381 | ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, |
f61d7884 JB |
3382 | elems->he_cap, |
3383 | elems->he_cap_len, | |
41cbb0f5 LC |
3384 | sta); |
3385 | ||
3386 | bss_conf->he_support = sta->sta.he_cap.has_he; | |
f61d7884 | 3387 | changed |= ieee80211_recalc_twt_req(sdata, sta, elems); |
41cbb0f5 LC |
3388 | } else { |
3389 | bss_conf->he_support = false; | |
55ebd6e6 | 3390 | bss_conf->twt_requester = false; |
41cbb0f5 LC |
3391 | } |
3392 | ||
3393 | if (bss_conf->he_support) { | |
dd56e902 | 3394 | bss_conf->he_bss_color.color = |
f61d7884 | 3395 | le32_get_bits(elems->he_operation->he_oper_params, |
77cbbc35 | 3396 | IEEE80211_HE_OPERATION_BSS_COLOR_MASK); |
dd56e902 JC |
3397 | bss_conf->he_bss_color.partial = |
3398 | le32_get_bits(elems->he_operation->he_oper_params, | |
3399 | IEEE80211_HE_OPERATION_PARTIAL_BSS_COLOR); | |
3400 | bss_conf->he_bss_color.disabled = | |
3401 | le32_get_bits(elems->he_operation->he_oper_params, | |
3402 | IEEE80211_HE_OPERATION_BSS_COLOR_DISABLED); | |
3403 | changed |= BSS_CHANGED_HE_BSS_COLOR; | |
41cbb0f5 | 3404 | |
41cbb0f5 | 3405 | bss_conf->htc_trig_based_pkt_ext = |
f61d7884 | 3406 | le32_get_bits(elems->he_operation->he_oper_params, |
77cbbc35 | 3407 | IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); |
41cbb0f5 | 3408 | bss_conf->frame_time_rts_th = |
f61d7884 | 3409 | le32_get_bits(elems->he_operation->he_oper_params, |
77cbbc35 | 3410 | IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); |
41cbb0f5 LC |
3411 | |
3412 | bss_conf->multi_sta_back_32bit = | |
3413 | sta->sta.he_cap.he_cap_elem.mac_cap_info[2] & | |
3414 | IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP; | |
3415 | ||
3416 | bss_conf->ack_enabled = | |
3417 | sta->sta.he_cap.he_cap_elem.mac_cap_info[2] & | |
3418 | IEEE80211_HE_MAC_CAP2_ACK_EN; | |
3419 | ||
f61d7884 JB |
3420 | bss_conf->uora_exists = !!elems->uora_element; |
3421 | if (elems->uora_element) | |
3422 | bss_conf->uora_ocw_range = elems->uora_element[0]; | |
41cbb0f5 | 3423 | |
f61d7884 JB |
3424 | ieee80211_he_op_ie_to_bss_conf(&sdata->vif, elems->he_operation); |
3425 | ieee80211_he_spr_ie_to_bss_conf(&sdata->vif, elems->he_spr); | |
41cbb0f5 LC |
3426 | /* TODO: OPEN: what happens if BSS color disable is set? */ |
3427 | } | |
3428 | ||
78ac51f8 SS |
3429 | if (cbss->transmitted_bss) { |
3430 | bss_conf->nontransmitted = true; | |
3431 | ether_addr_copy(bss_conf->transmitter_bssid, | |
3432 | cbss->transmitted_bss->bssid); | |
3433 | bss_conf->bssid_indicator = cbss->max_bssid_indicator; | |
3434 | bss_conf->bssid_index = cbss->bssid_index; | |
3435 | } | |
3436 | ||
30eb1dc2 JB |
3437 | /* |
3438 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
3439 | * in their association response, so ignore that data for our own | |
3440 | * configuration. If it changed since the last beacon, we'll get the | |
3441 | * next beacon and update then. | |
3442 | */ | |
1128958d | 3443 | |
bee7f586 JB |
3444 | /* |
3445 | * If an operating mode notification IE is present, override the | |
3446 | * NSS calculation (that would be done in rate_control_rate_init()) | |
3447 | * and use the # of streams from that element. | |
3448 | */ | |
f61d7884 JB |
3449 | if (elems->opmode_notif && |
3450 | !(*elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
bee7f586 JB |
3451 | u8 nss; |
3452 | ||
f61d7884 | 3453 | nss = *elems->opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; |
bee7f586 JB |
3454 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; |
3455 | nss += 1; | |
3456 | sta->sta.rx_nss = nss; | |
3457 | } | |
3458 | ||
4b7679a5 | 3459 | rate_control_rate_init(sta); |
f0706e82 | 3460 | |
93f0490e | 3461 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) { |
c2c98fde | 3462 | set_sta_flag(sta, WLAN_STA_MFP); |
93f0490e T |
3463 | sta->sta.mfp = true; |
3464 | } else { | |
3465 | sta->sta.mfp = false; | |
3466 | } | |
5394af4d | 3467 | |
f61d7884 | 3468 | sta->sta.wme = elems->wmm_param && local->hw.queues >= IEEE80211_NUM_ACS; |
ddf4ac53 | 3469 | |
3e4d40fa | 3470 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
3471 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
3472 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
3473 | if (err) { | |
bdcbd8e0 JB |
3474 | sdata_info(sdata, |
3475 | "failed to move station %pM to desired state\n", | |
3476 | sta->sta.addr); | |
c8987876 JB |
3477 | WARN_ON(__sta_info_destroy(sta)); |
3478 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
3479 | ret = false; |
3480 | goto out; | |
c8987876 JB |
3481 | } |
3482 | ||
7852e361 | 3483 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 3484 | |
f2176d72 JO |
3485 | /* |
3486 | * Always handle WMM once after association regardless | |
3487 | * of the first value the AP uses. Setting -1 here has | |
3488 | * that effect because the AP values is an unsigned | |
3489 | * 4-bit value. | |
3490 | */ | |
3491 | ifmgd->wmm_last_param_set = -1; | |
2e249fc3 | 3492 | ifmgd->mu_edca_last_param_set = -1; |
f2176d72 | 3493 | |
2ed77ea6 | 3494 | if (ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { |
cec66283 | 3495 | ieee80211_set_wmm_default(sdata, false, false); |
f61d7884 JB |
3496 | } else if (!ieee80211_sta_wmm_params(local, sdata, elems->wmm_param, |
3497 | elems->wmm_param_len, | |
3498 | elems->mu_edca_param_set)) { | |
2ed77ea6 JB |
3499 | /* still enable QoS since we might have HT/VHT */ |
3500 | ieee80211_set_wmm_default(sdata, false, true); | |
3501 | /* set the disable-WMM flag in this case to disable | |
3502 | * tracking WMM parameter changes in the beacon if | |
3503 | * the parameters weren't actually valid. Doing so | |
3504 | * avoids changing parameters very strangely when | |
3505 | * the AP is going back and forth between valid and | |
3506 | * invalid parameters. | |
3507 | */ | |
3508 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
3509 | } | |
3abead59 | 3510 | changed |= BSS_CHANGED_QOS; |
f0706e82 | 3511 | |
f61d7884 | 3512 | if (elems->max_idle_period_ie) { |
e38a017b | 3513 | bss_conf->max_idle_period = |
f61d7884 | 3514 | le16_to_cpu(elems->max_idle_period_ie->max_idle_period); |
e38a017b | 3515 | bss_conf->protected_keep_alive = |
f61d7884 | 3516 | !!(elems->max_idle_period_ie->idle_options & |
e38a017b AS |
3517 | WLAN_IDLE_OPTIONS_PROTECTED_KEEP_ALIVE); |
3518 | changed |= BSS_CHANGED_KEEP_ALIVE; | |
3519 | } else { | |
3520 | bss_conf->max_idle_period = 0; | |
3521 | bss_conf->protected_keep_alive = false; | |
3522 | } | |
3523 | ||
60f8b39c JB |
3524 | /* set AID and assoc capability, |
3525 | * ieee80211_set_associated() will tell the driver */ | |
3526 | bss_conf->aid = aid; | |
3527 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 3528 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 3529 | |
d524215f FF |
3530 | /* |
3531 | * If we're using 4-addr mode, let the AP know that we're | |
3532 | * doing so, so that it can create the STA VLAN on its side | |
3533 | */ | |
3534 | if (ifmgd->use_4addr) | |
3535 | ieee80211_send_4addr_nullfunc(local, sdata); | |
3536 | ||
15b7b062 | 3537 | /* |
b291ba11 JB |
3538 | * Start timer to probe the connection to the AP now. |
3539 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 3540 | */ |
b291ba11 | 3541 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 3542 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 3543 | |
35d865af JB |
3544 | ret = true; |
3545 | out: | |
3546 | kfree(bss_ies); | |
3547 | return ret; | |
f0706e82 JB |
3548 | } |
3549 | ||
8d61ffa5 JB |
3550 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
3551 | struct ieee80211_mgmt *mgmt, | |
3552 | size_t len) | |
66e67e41 JB |
3553 | { |
3554 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3555 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
3556 | u16 capab_info, status_code, aid; | |
3557 | struct ieee802_11_elems elems; | |
b0b6aa2c | 3558 | int ac, uapsd_queues = -1; |
66e67e41 JB |
3559 | u8 *pos; |
3560 | bool reassoc; | |
8d61ffa5 | 3561 | struct cfg80211_bss *bss; |
d0d1a12f EG |
3562 | struct ieee80211_event event = { |
3563 | .type = MLME_EVENT, | |
3564 | .u.mlme.data = ASSOC_EVENT, | |
3565 | }; | |
66e67e41 | 3566 | |
8d61ffa5 | 3567 | sdata_assert_lock(sdata); |
66e67e41 JB |
3568 | |
3569 | if (!assoc_data) | |
8d61ffa5 | 3570 | return; |
b203ca39 | 3571 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 3572 | return; |
66e67e41 JB |
3573 | |
3574 | /* | |
3575 | * AssocResp and ReassocResp have identical structure, so process both | |
3576 | * of them in this function. | |
3577 | */ | |
3578 | ||
3579 | if (len < 24 + 6) | |
8d61ffa5 | 3580 | return; |
66e67e41 | 3581 | |
7a7d3e4c | 3582 | reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control); |
66e67e41 JB |
3583 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
3584 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
3585 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
3586 | ||
bdcbd8e0 JB |
3587 | sdata_info(sdata, |
3588 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
3589 | reassoc ? "Rea" : "A", mgmt->sa, | |
3590 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 | 3591 | |
39404fee JM |
3592 | if (assoc_data->fils_kek_len && |
3593 | fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0) | |
3594 | return; | |
3595 | ||
66e67e41 | 3596 | pos = mgmt->u.assoc_resp.variable; |
4abb52a4 SS |
3597 | ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems, |
3598 | mgmt->bssid, assoc_data->bss->bssid); | |
66e67e41 JB |
3599 | |
3600 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
3601 | elems.timeout_int && |
3602 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 3603 | u32 tu, ms; |
79ba1d89 | 3604 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 3605 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
3606 | sdata_info(sdata, |
3607 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
3608 | mgmt->sa, tu, ms); | |
66e67e41 | 3609 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 3610 | assoc_data->timeout_started = true; |
66e67e41 | 3611 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
3612 | run_again(sdata, assoc_data->timeout); |
3613 | return; | |
66e67e41 JB |
3614 | } |
3615 | ||
8d61ffa5 | 3616 | bss = assoc_data->bss; |
66e67e41 JB |
3617 | |
3618 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
3619 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
3620 | mgmt->sa, status_code); | |
e6f462df | 3621 | ieee80211_destroy_assoc_data(sdata, false, false); |
d0d1a12f EG |
3622 | event.u.mlme.status = MLME_DENIED; |
3623 | event.u.mlme.reason = status_code; | |
3624 | drv_event_callback(sdata->local, sdata, &event); | |
66e67e41 | 3625 | } else { |
f61d7884 | 3626 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len, &elems)) { |
66e67e41 | 3627 | /* oops -- internal error -- send timeout for now */ |
e6f462df | 3628 | ieee80211_destroy_assoc_data(sdata, false, false); |
959867fa | 3629 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 3630 | return; |
66e67e41 | 3631 | } |
d0d1a12f EG |
3632 | event.u.mlme.status = MLME_SUCCESS; |
3633 | drv_event_callback(sdata->local, sdata, &event); | |
635d999f | 3634 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
3635 | |
3636 | /* | |
3637 | * destroy assoc_data afterwards, as otherwise an idle | |
3638 | * recalc after assoc_data is NULL but before associated | |
3639 | * is set can cause the interface to go idle | |
3640 | */ | |
e6f462df | 3641 | ieee80211_destroy_assoc_data(sdata, true, false); |
b0b6aa2c EP |
3642 | |
3643 | /* get uapsd queues configuration */ | |
3644 | uapsd_queues = 0; | |
3645 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3646 | if (sdata->tx_conf[ac].uapsd) | |
f438ceb8 | 3647 | uapsd_queues |= ieee80211_ac_to_qos_mask[ac]; |
66e67e41 JB |
3648 | } |
3649 | ||
4d9ec73d JM |
3650 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues, |
3651 | ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len); | |
66e67e41 | 3652 | } |
8e3c1b77 | 3653 | |
98c8fccf | 3654 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 3655 | struct ieee80211_mgmt *mgmt, size_t len, |
4abb52a4 | 3656 | struct ieee80211_rx_status *rx_status) |
98c8fccf JB |
3657 | { |
3658 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 3659 | struct ieee80211_bss *bss; |
98c8fccf | 3660 | struct ieee80211_channel *channel; |
56007a02 | 3661 | |
8d61ffa5 | 3662 | sdata_assert_lock(sdata); |
b4f286a1 | 3663 | |
3afc2167 EG |
3664 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
3665 | if (!channel) | |
98c8fccf JB |
3666 | return; |
3667 | ||
4abb52a4 | 3668 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, channel); |
817cee76 | 3669 | if (bss) { |
817cee76 | 3670 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 3671 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 3672 | } |
f0706e82 JB |
3673 | } |
3674 | ||
3675 | ||
f698d856 | 3676 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 3677 | struct sk_buff *skb) |
f0706e82 | 3678 | { |
af6b6374 | 3679 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 3680 | struct ieee80211_if_managed *ifmgd; |
af6b6374 | 3681 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
85b27ef7 | 3682 | struct ieee80211_channel *channel; |
af6b6374 | 3683 | size_t baselen, len = skb->len; |
ae6a44e3 | 3684 | |
15b7b062 KV |
3685 | ifmgd = &sdata->u.mgd; |
3686 | ||
8d61ffa5 | 3687 | sdata_assert_lock(sdata); |
77fdaa12 | 3688 | |
85b27ef7 AO |
3689 | /* |
3690 | * According to Draft P802.11ax D6.0 clause 26.17.2.3.2: | |
3691 | * "If a 6 GHz AP receives a Probe Request frame and responds with | |
3692 | * a Probe Response frame [..], the Address 1 field of the Probe | |
3693 | * Response frame shall be set to the broadcast address [..]" | |
3694 | * So, on 6GHz band we should also accept broadcast responses. | |
3695 | */ | |
3696 | channel = ieee80211_get_channel(sdata->local->hw.wiphy, | |
3697 | rx_status->freq); | |
3698 | if (!channel) | |
3699 | return; | |
3700 | ||
3701 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr) && | |
3702 | (channel->band != NL80211_BAND_6GHZ || | |
3703 | !is_broadcast_ether_addr(mgmt->da))) | |
8e7cdbb6 TW |
3704 | return; /* ignore ProbeResp to foreign address */ |
3705 | ||
ae6a44e3 EK |
3706 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
3707 | if (baselen > len) | |
3708 | return; | |
3709 | ||
4abb52a4 | 3710 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status); |
9859b81e | 3711 | |
77fdaa12 | 3712 | if (ifmgd->associated && |
b203ca39 | 3713 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 3714 | ieee80211_reset_ap_probe(sdata); |
f0706e82 JB |
3715 | } |
3716 | ||
d91f36db JB |
3717 | /* |
3718 | * This is the canonical list of information elements we care about, | |
3719 | * the filter code also gives us all changes to the Microsoft OUI | |
c8d65917 SG |
3720 | * (00:50:F2) vendor IE which is used for WMM which we need to track, |
3721 | * as well as the DTPC IE (part of the Cisco OUI) used for signaling | |
3722 | * changes to requested client power. | |
d91f36db JB |
3723 | * |
3724 | * We implement beacon filtering in software since that means we can | |
3725 | * avoid processing the frame here and in cfg80211, and userspace | |
3726 | * will not be able to tell whether the hardware supports it or not. | |
3727 | * | |
3728 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
3729 | * add items it requires. It also needs to be able to tell us to | |
3730 | * look out for other vendor IEs. | |
3731 | */ | |
3732 | static const u64 care_about_ies = | |
1d4df3a5 JB |
3733 | (1ULL << WLAN_EID_COUNTRY) | |
3734 | (1ULL << WLAN_EID_ERP_INFO) | | |
3735 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
3736 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
3737 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
70a3fd6c JB |
3738 | (1ULL << WLAN_EID_HT_OPERATION) | |
3739 | (1ULL << WLAN_EID_EXT_CHANSWITCH_ANN); | |
d91f36db | 3740 | |
1ad22fb5 T |
3741 | static void ieee80211_handle_beacon_sig(struct ieee80211_sub_if_data *sdata, |
3742 | struct ieee80211_if_managed *ifmgd, | |
3743 | struct ieee80211_bss_conf *bss_conf, | |
3744 | struct ieee80211_local *local, | |
3745 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 3746 | { |
17e4ec14 | 3747 | /* Track average RSSI from the Beacon frames of the current AP */ |
1ad22fb5 | 3748 | |
17e4ec14 JM |
3749 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { |
3750 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
338c17ae | 3751 | ewma_beacon_signal_init(&ifmgd->ave_beacon_signal); |
17e4ec14 | 3752 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 3753 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 3754 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 | 3755 | } else { |
391a200a | 3756 | ifmgd->count_beacon_signal++; |
17e4ec14 | 3757 | } |
615f7b9b | 3758 | |
338c17ae JB |
3759 | ewma_beacon_signal_add(&ifmgd->ave_beacon_signal, -rx_status->signal); |
3760 | ||
615f7b9b MV |
3761 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && |
3762 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
338c17ae | 3763 | int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
615f7b9b | 3764 | int last_sig = ifmgd->last_ave_beacon_signal; |
a8182929 EG |
3765 | struct ieee80211_event event = { |
3766 | .type = RSSI_EVENT, | |
3767 | }; | |
615f7b9b MV |
3768 | |
3769 | /* | |
3770 | * if signal crosses either of the boundaries, invoke callback | |
3771 | * with appropriate parameters | |
3772 | */ | |
3773 | if (sig > ifmgd->rssi_max_thold && | |
3774 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
3775 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3776 | event.u.rssi.data = RSSI_EVENT_HIGH; |
3777 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3778 | } else if (sig < ifmgd->rssi_min_thold && |
3779 | (last_sig >= ifmgd->rssi_max_thold || | |
3780 | last_sig == 0)) { | |
3781 | ifmgd->last_ave_beacon_signal = sig; | |
a8182929 EG |
3782 | event.u.rssi.data = RSSI_EVENT_LOW; |
3783 | drv_event_callback(local, sdata, &event); | |
615f7b9b MV |
3784 | } |
3785 | } | |
3786 | ||
17e4ec14 | 3787 | if (bss_conf->cqm_rssi_thold && |
391a200a | 3788 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 3789 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
338c17ae | 3790 | int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); |
17e4ec14 JM |
3791 | int last_event = ifmgd->last_cqm_event_signal; |
3792 | int thold = bss_conf->cqm_rssi_thold; | |
3793 | int hyst = bss_conf->cqm_rssi_hyst; | |
338c17ae | 3794 | |
17e4ec14 JM |
3795 | if (sig < thold && |
3796 | (last_event == 0 || sig < last_event - hyst)) { | |
3797 | ifmgd->last_cqm_event_signal = sig; | |
3798 | ieee80211_cqm_rssi_notify( | |
3799 | &sdata->vif, | |
3800 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
769f07d8 | 3801 | sig, GFP_KERNEL); |
17e4ec14 JM |
3802 | } else if (sig > thold && |
3803 | (last_event == 0 || sig > last_event + hyst)) { | |
3804 | ifmgd->last_cqm_event_signal = sig; | |
3805 | ieee80211_cqm_rssi_notify( | |
3806 | &sdata->vif, | |
3807 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
769f07d8 | 3808 | sig, GFP_KERNEL); |
17e4ec14 JM |
3809 | } |
3810 | } | |
3811 | ||
2c3c5f8c AZ |
3812 | if (bss_conf->cqm_rssi_low && |
3813 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
3814 | int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); | |
3815 | int last_event = ifmgd->last_cqm_event_signal; | |
3816 | int low = bss_conf->cqm_rssi_low; | |
3817 | int high = bss_conf->cqm_rssi_high; | |
3818 | ||
3819 | if (sig < low && | |
3820 | (last_event == 0 || last_event >= low)) { | |
3821 | ifmgd->last_cqm_event_signal = sig; | |
3822 | ieee80211_cqm_rssi_notify( | |
3823 | &sdata->vif, | |
3824 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
3825 | sig, GFP_KERNEL); | |
3826 | } else if (sig > high && | |
3827 | (last_event == 0 || last_event <= high)) { | |
3828 | ifmgd->last_cqm_event_signal = sig; | |
3829 | ieee80211_cqm_rssi_notify( | |
3830 | &sdata->vif, | |
3831 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
3832 | sig, GFP_KERNEL); | |
3833 | } | |
3834 | } | |
1ad22fb5 T |
3835 | } |
3836 | ||
78ac51f8 SS |
3837 | static bool ieee80211_rx_our_beacon(const u8 *tx_bssid, |
3838 | struct cfg80211_bss *bss) | |
3839 | { | |
3840 | if (ether_addr_equal(tx_bssid, bss->bssid)) | |
3841 | return true; | |
3842 | if (!bss->transmitted_bss) | |
3843 | return false; | |
3844 | return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid); | |
3845 | } | |
3846 | ||
1ad22fb5 T |
3847 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
3848 | struct ieee80211_mgmt *mgmt, size_t len, | |
3849 | struct ieee80211_rx_status *rx_status) | |
3850 | { | |
3851 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3852 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; | |
3853 | size_t baselen; | |
3854 | struct ieee802_11_elems elems; | |
3855 | struct ieee80211_local *local = sdata->local; | |
3856 | struct ieee80211_chanctx_conf *chanctx_conf; | |
3857 | struct ieee80211_channel *chan; | |
3858 | struct sta_info *sta; | |
3859 | u32 changed = 0; | |
3860 | bool erp_valid; | |
3861 | u8 erp_value = 0; | |
3862 | u32 ncrc; | |
3863 | u8 *bssid; | |
3864 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
3865 | ||
3866 | sdata_assert_lock(sdata); | |
3867 | ||
3868 | /* Process beacon from the current BSS */ | |
3869 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
3870 | if (baselen > len) | |
3871 | return; | |
3872 | ||
3873 | rcu_read_lock(); | |
3874 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3875 | if (!chanctx_conf) { | |
3876 | rcu_read_unlock(); | |
3877 | return; | |
3878 | } | |
3879 | ||
3880 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { | |
3881 | rcu_read_unlock(); | |
3882 | return; | |
3883 | } | |
3884 | chan = chanctx_conf->def.chan; | |
3885 | rcu_read_unlock(); | |
3886 | ||
3887 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && | |
78ac51f8 | 3888 | ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->assoc_data->bss)) { |
1ad22fb5 | 3889 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
4abb52a4 SS |
3890 | len - baselen, false, &elems, |
3891 | mgmt->bssid, | |
3892 | ifmgd->assoc_data->bss->bssid); | |
1ad22fb5 | 3893 | |
4abb52a4 | 3894 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status); |
78ac51f8 SS |
3895 | |
3896 | if (elems.dtim_period) | |
3897 | ifmgd->dtim_period = elems.dtim_period; | |
1ad22fb5 T |
3898 | ifmgd->have_beacon = true; |
3899 | ifmgd->assoc_data->need_beacon = false; | |
3900 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { | |
3901 | sdata->vif.bss_conf.sync_tsf = | |
3902 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3903 | sdata->vif.bss_conf.sync_device_ts = | |
3904 | rx_status->device_timestamp; | |
78ac51f8 | 3905 | sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count; |
1ad22fb5 | 3906 | } |
78ac51f8 SS |
3907 | |
3908 | if (elems.mbssid_config_ie) | |
3909 | bss_conf->profile_periodicity = | |
3910 | elems.mbssid_config_ie->profile_periodicity; | |
3911 | ||
3912 | if (elems.ext_capab_len >= 11 && | |
3913 | (elems.ext_capab[10] & WLAN_EXT_CAPA11_EMA_SUPPORT)) | |
3914 | bss_conf->ema_ap = true; | |
3915 | ||
1ad22fb5 T |
3916 | /* continue assoc process */ |
3917 | ifmgd->assoc_data->timeout = jiffies; | |
3918 | ifmgd->assoc_data->timeout_started = true; | |
3919 | run_again(sdata, ifmgd->assoc_data->timeout); | |
3920 | return; | |
3921 | } | |
3922 | ||
3923 | if (!ifmgd->associated || | |
78ac51f8 | 3924 | !ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->associated)) |
1ad22fb5 T |
3925 | return; |
3926 | bssid = ifmgd->associated->bssid; | |
3927 | ||
3928 | if (!(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL)) | |
3929 | ieee80211_handle_beacon_sig(sdata, ifmgd, bss_conf, | |
3930 | local, rx_status); | |
2c3c5f8c | 3931 | |
392b9ffb | 3932 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3933 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3934 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3935 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3936 | } |
3937 | ||
b291ba11 JB |
3938 | /* |
3939 | * Push the beacon loss detection into the future since | |
3940 | * we are processing a beacon from the AP just now. | |
3941 | */ | |
d3a910a8 | 3942 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3943 | |
d91f36db JB |
3944 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3945 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3946 | len - baselen, false, &elems, |
4abb52a4 SS |
3947 | care_about_ies, ncrc, |
3948 | mgmt->bssid, bssid); | |
d91f36db | 3949 | |
90d13e8f JB |
3950 | if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) && |
3951 | ieee80211_check_tim(elems.tim, elems.tim_len, ifmgd->aid)) { | |
3952 | if (local->hw.conf.dynamic_ps_timeout > 0) { | |
3953 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
3954 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3955 | ieee80211_hw_config(local, | |
3956 | IEEE80211_CONF_CHANGE_PS); | |
572e0012 | 3957 | } |
076cdcb1 | 3958 | ieee80211_send_nullfunc(local, sdata, false); |
90d13e8f JB |
3959 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
3960 | local->pspolling = true; | |
3961 | ||
3962 | /* | |
3963 | * Here is assumed that the driver will be | |
3964 | * able to send ps-poll frame and receive a | |
3965 | * response even though power save mode is | |
3966 | * enabled, but some drivers might require | |
3967 | * to disable power save here. This needs | |
3968 | * to be investigated. | |
3969 | */ | |
3970 | ieee80211_send_pspoll(local, sdata); | |
a97b77b9 VN |
3971 | } |
3972 | } | |
7a5158ef | 3973 | |
b115b972 JD |
3974 | if (sdata->vif.p2p || |
3975 | sdata->vif.driver_flags & IEEE80211_VIF_GET_NOA_UPDATE) { | |
67baf663 | 3976 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3977 | int ret; |
3978 | ||
3979 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3980 | len - baselen, | |
3981 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3982 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3983 | if (ret >= 2) { |
3984 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3985 | /* valid noa_attr and index changed */ | |
3986 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3987 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3988 | changed |= BSS_CHANGED_P2P_PS; | |
3989 | /* | |
3990 | * make sure we update all information, the CRC | |
3991 | * mechanism doesn't look at P2P attributes. | |
3992 | */ | |
3993 | ifmgd->beacon_crc_valid = false; | |
3994 | } | |
3995 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3996 | /* noa_attr not found and we had valid noa_attr before */ | |
3997 | sdata->u.mgd.p2p_noa_index = -1; | |
3998 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3999 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
4000 | ifmgd->beacon_crc_valid = false; |
4001 | } | |
4002 | } | |
4003 | ||
0c21e632 LC |
4004 | if (ifmgd->csa_waiting_bcn) |
4005 | ieee80211_chswitch_post_beacon(sdata); | |
4006 | ||
2ecc3905 AB |
4007 | /* |
4008 | * Update beacon timing and dtim count on every beacon appearance. This | |
4009 | * will allow the driver to use the most updated values. Do it before | |
4010 | * comparing this one with last received beacon. | |
4011 | * IMPORTANT: These parameters would possibly be out of sync by the time | |
4012 | * the driver will use them. The synchronized view is currently | |
4013 | * guaranteed only in certain callbacks. | |
4014 | */ | |
30686bf7 | 4015 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
2ecc3905 AB |
4016 | sdata->vif.bss_conf.sync_tsf = |
4017 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
4018 | sdata->vif.bss_conf.sync_device_ts = | |
4019 | rx_status->device_timestamp; | |
78ac51f8 | 4020 | sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count; |
2ecc3905 AB |
4021 | } |
4022 | ||
d8ec4433 | 4023 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 4024 | return; |
30196673 | 4025 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 4026 | ifmgd->beacon_crc_valid = true; |
30196673 | 4027 | |
4abb52a4 | 4028 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status); |
7d25745d | 4029 | |
d70b7616 | 4030 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
2ba45384 | 4031 | rx_status->device_timestamp, |
d70b7616 JB |
4032 | &elems, true); |
4033 | ||
095d81ce JB |
4034 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
4035 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
41cbb0f5 LC |
4036 | elems.wmm_param_len, |
4037 | elems.mu_edca_param_set)) | |
7d25745d JB |
4038 | changed |= BSS_CHANGED_QOS; |
4039 | ||
c65dd147 EG |
4040 | /* |
4041 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 4042 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 4043 | */ |
989c6505 | 4044 | if (!ifmgd->have_beacon) { |
c65dd147 | 4045 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
78ac51f8 | 4046 | bss_conf->dtim_period = elems.dtim_period ?: 1; |
ef429dad | 4047 | |
989c6505 AB |
4048 | changed |= BSS_CHANGED_BEACON_INFO; |
4049 | ifmgd->have_beacon = true; | |
482a9c74 AB |
4050 | |
4051 | mutex_lock(&local->iflist_mtx); | |
4a733ef1 | 4052 | ieee80211_recalc_ps(local); |
482a9c74 AB |
4053 | mutex_unlock(&local->iflist_mtx); |
4054 | ||
ce857888 | 4055 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
4056 | } |
4057 | ||
1946bed9 | 4058 | if (elems.erp_info) { |
7a5158ef JB |
4059 | erp_valid = true; |
4060 | erp_value = elems.erp_info[0]; | |
4061 | } else { | |
4062 | erp_valid = false; | |
50c4afb9 | 4063 | } |
7a5158ef JB |
4064 | changed |= ieee80211_handle_bss_capability(sdata, |
4065 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
4066 | erp_valid, erp_value); | |
f0706e82 | 4067 | |
1128958d | 4068 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
4069 | sta = sta_info_get(sdata, bssid); |
4070 | ||
c9d3245e JC |
4071 | changed |= ieee80211_recalc_twt_req(sdata, sta, &elems); |
4072 | ||
53b954ee EP |
4073 | if (ieee80211_config_bw(sdata, sta, |
4074 | elems.ht_cap_elem, elems.ht_operation, | |
41cbb0f5 LC |
4075 | elems.vht_operation, elems.he_operation, |
4076 | bssid, &changed)) { | |
30eb1dc2 | 4077 | mutex_unlock(&local->sta_mtx); |
89f774e6 JB |
4078 | sdata_info(sdata, |
4079 | "failed to follow AP %pM bandwidth change, disconnect\n", | |
4080 | bssid); | |
30eb1dc2 JB |
4081 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4082 | WLAN_REASON_DEAUTH_LEAVING, | |
4083 | true, deauth_buf); | |
a90faa9d EG |
4084 | ieee80211_report_disconnect(sdata, deauth_buf, |
4085 | sizeof(deauth_buf), true, | |
4086 | WLAN_REASON_DEAUTH_LEAVING); | |
8d61ffa5 | 4087 | return; |
30eb1dc2 | 4088 | } |
bee7f586 JB |
4089 | |
4090 | if (sta && elems.opmode_notif) | |
4091 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
cf1e05c6 | 4092 | rx_status->band); |
1128958d | 4093 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 4094 | |
24a4e400 SG |
4095 | changed |= ieee80211_handle_pwr_constr(sdata, chan, mgmt, |
4096 | elems.country_elem, | |
4097 | elems.country_elem_len, | |
c8d65917 SG |
4098 | elems.pwr_constr_elem, |
4099 | elems.cisco_dtpc_elem); | |
3f2355cb | 4100 | |
471b3efd | 4101 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
4102 | } |
4103 | ||
1fa57d01 JB |
4104 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
4105 | struct sk_buff *skb) | |
f0706e82 JB |
4106 | { |
4107 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
4108 | struct ieee80211_mgmt *mgmt; |
4109 | u16 fc; | |
1b3a2e49 JB |
4110 | struct ieee802_11_elems elems; |
4111 | int ies_len; | |
f0706e82 | 4112 | |
f0706e82 JB |
4113 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
4114 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
4115 | fc = le16_to_cpu(mgmt->frame_control); | |
4116 | ||
8d61ffa5 | 4117 | sdata_lock(sdata); |
77fdaa12 | 4118 | |
66e67e41 JB |
4119 | switch (fc & IEEE80211_FCTL_STYPE) { |
4120 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 4121 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
4122 | break; |
4123 | case IEEE80211_STYPE_PROBE_RESP: | |
4124 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
4125 | break; | |
4126 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 4127 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
4128 | break; |
4129 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 4130 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
4131 | break; |
4132 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 4133 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
4134 | break; |
4135 | case IEEE80211_STYPE_ASSOC_RESP: | |
4136 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 4137 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
4138 | break; |
4139 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 4140 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
4141 | ies_len = skb->len - |
4142 | offsetof(struct ieee80211_mgmt, | |
4143 | u.action.u.chan_switch.variable); | |
37799e52 JB |
4144 | |
4145 | if (ies_len < 0) | |
4146 | break; | |
4147 | ||
4abb52a4 | 4148 | /* CSA IE cannot be overridden, no need for BSSID */ |
37799e52 JB |
4149 | ieee802_11_parse_elems( |
4150 | mgmt->u.action.u.chan_switch.variable, | |
4abb52a4 | 4151 | ies_len, true, &elems, mgmt->bssid, NULL); |
37799e52 JB |
4152 | |
4153 | if (elems.parse_error) | |
4154 | break; | |
4155 | ||
1b3a2e49 | 4156 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
4157 | rx_status->mactime, |
4158 | rx_status->device_timestamp, | |
4159 | &elems, false); | |
1b3a2e49 JB |
4160 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
4161 | ies_len = skb->len - | |
4162 | offsetof(struct ieee80211_mgmt, | |
4163 | u.action.u.ext_chan_switch.variable); | |
4164 | ||
4165 | if (ies_len < 0) | |
4166 | break; | |
4167 | ||
4abb52a4 SS |
4168 | /* |
4169 | * extended CSA IE can't be overridden, no need for | |
4170 | * BSSID | |
4171 | */ | |
1b3a2e49 JB |
4172 | ieee802_11_parse_elems( |
4173 | mgmt->u.action.u.ext_chan_switch.variable, | |
4abb52a4 | 4174 | ies_len, true, &elems, mgmt->bssid, NULL); |
1b3a2e49 JB |
4175 | |
4176 | if (elems.parse_error) | |
4177 | break; | |
4178 | ||
4179 | /* for the handling code pretend this was also an IE */ | |
4180 | elems.ext_chansw_ie = | |
4181 | &mgmt->u.action.u.ext_chan_switch.data; | |
4182 | ||
66e67e41 | 4183 | ieee80211_sta_process_chanswitch(sdata, |
2ba45384 LC |
4184 | rx_status->mactime, |
4185 | rx_status->device_timestamp, | |
4186 | &elems, false); | |
77fdaa12 | 4187 | } |
37799e52 | 4188 | break; |
77fdaa12 | 4189 | } |
8d61ffa5 | 4190 | sdata_unlock(sdata); |
f0706e82 JB |
4191 | } |
4192 | ||
34f11cd3 | 4193 | static void ieee80211_sta_timer(struct timer_list *t) |
f0706e82 | 4194 | { |
60f8b39c | 4195 | struct ieee80211_sub_if_data *sdata = |
34f11cd3 | 4196 | from_timer(sdata, t, u.mgd.timer); |
5bb644a0 | 4197 | |
9b7d72c1 | 4198 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
4199 | } |
4200 | ||
04ac3c0e | 4201 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 4202 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 4203 | { |
6ae16775 | 4204 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 4205 | |
37ad3888 | 4206 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 4207 | tx, frame_buf); |
37ad3888 | 4208 | |
a90faa9d EG |
4209 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
4210 | reason); | |
04ac3c0e FF |
4211 | } |
4212 | ||
46cad4b7 | 4213 | static int ieee80211_auth(struct ieee80211_sub_if_data *sdata) |
66e67e41 JB |
4214 | { |
4215 | struct ieee80211_local *local = sdata->local; | |
4216 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4217 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 4218 | u32 tx_flags = 0; |
46cad4b7 JB |
4219 | u16 trans = 1; |
4220 | u16 status = 0; | |
d4e36e55 | 4221 | u16 prepare_tx_duration = 0; |
66e67e41 | 4222 | |
8d61ffa5 | 4223 | sdata_assert_lock(sdata); |
66e67e41 JB |
4224 | |
4225 | if (WARN_ON_ONCE(!auth_data)) | |
4226 | return -EINVAL; | |
4227 | ||
66e67e41 JB |
4228 | auth_data->tries++; |
4229 | ||
4230 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
4231 | sdata_info(sdata, "authentication with %pM timed out\n", |
4232 | auth_data->bss->bssid); | |
66e67e41 JB |
4233 | |
4234 | /* | |
4235 | * Most likely AP is not in the range so remove the | |
4236 | * bss struct for that AP. | |
4237 | */ | |
4238 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
4239 | ||
4240 | return -ETIMEDOUT; | |
4241 | } | |
4242 | ||
d4e36e55 IP |
4243 | if (auth_data->algorithm == WLAN_AUTH_SAE) |
4244 | prepare_tx_duration = | |
4245 | jiffies_to_msecs(IEEE80211_AUTH_TIMEOUT_SAE); | |
4246 | ||
4247 | drv_mgd_prepare_tx(local, sdata, prepare_tx_duration); | |
a1845fc7 | 4248 | |
46cad4b7 JB |
4249 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
4250 | auth_data->bss->bssid, auth_data->tries, | |
4251 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 4252 | |
46cad4b7 | 4253 | auth_data->expected_transaction = 2; |
6b8ece3a | 4254 | |
46cad4b7 JB |
4255 | if (auth_data->algorithm == WLAN_AUTH_SAE) { |
4256 | trans = auth_data->sae_trans; | |
4257 | status = auth_data->sae_status; | |
4258 | auth_data->expected_transaction = trans; | |
4259 | } | |
66e67e41 | 4260 | |
46cad4b7 JB |
4261 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
4262 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
4263 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 | 4264 | |
46cad4b7 JB |
4265 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
4266 | auth_data->data, auth_data->data_len, | |
4267 | auth_data->bss->bssid, | |
4268 | auth_data->bss->bssid, NULL, 0, 0, | |
4269 | tx_flags); | |
66e67e41 | 4270 | |
6211dd12 | 4271 | if (tx_flags == 0) { |
407879b6 IP |
4272 | if (auth_data->algorithm == WLAN_AUTH_SAE) |
4273 | auth_data->timeout = jiffies + | |
4274 | IEEE80211_AUTH_TIMEOUT_SAE; | |
4275 | else | |
4276 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; | |
89afe614 | 4277 | } else { |
cb236d2d JB |
4278 | auth_data->timeout = |
4279 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
1672c0e3 | 4280 | } |
66e67e41 | 4281 | |
407879b6 IP |
4282 | auth_data->timeout_started = true; |
4283 | run_again(sdata, auth_data->timeout); | |
4284 | ||
66e67e41 JB |
4285 | return 0; |
4286 | } | |
4287 | ||
4288 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
4289 | { | |
4290 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
4291 | struct ieee80211_local *local = sdata->local; | |
4292 | ||
8d61ffa5 | 4293 | sdata_assert_lock(sdata); |
66e67e41 | 4294 | |
66e67e41 JB |
4295 | assoc_data->tries++; |
4296 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
4297 | sdata_info(sdata, "association with %pM timed out\n", |
4298 | assoc_data->bss->bssid); | |
66e67e41 JB |
4299 | |
4300 | /* | |
4301 | * Most likely AP is not in the range so remove the | |
4302 | * bss struct for that AP. | |
4303 | */ | |
4304 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
4305 | ||
4306 | return -ETIMEDOUT; | |
4307 | } | |
4308 | ||
bdcbd8e0 JB |
4309 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
4310 | assoc_data->bss->bssid, assoc_data->tries, | |
4311 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
4312 | ieee80211_send_assoc(sdata); |
4313 | ||
30686bf7 | 4314 | if (!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
1672c0e3 | 4315 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; |
89afe614 | 4316 | assoc_data->timeout_started = true; |
8d61ffa5 | 4317 | run_again(sdata, assoc_data->timeout); |
89afe614 | 4318 | } else { |
cb236d2d JB |
4319 | assoc_data->timeout = |
4320 | round_jiffies_up(jiffies + | |
4321 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
4322 | assoc_data->timeout_started = true; | |
4323 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 4324 | } |
66e67e41 JB |
4325 | |
4326 | return 0; | |
4327 | } | |
4328 | ||
1672c0e3 JB |
4329 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
4330 | __le16 fc, bool acked) | |
4331 | { | |
4332 | struct ieee80211_local *local = sdata->local; | |
4333 | ||
4334 | sdata->u.mgd.status_fc = fc; | |
4335 | sdata->u.mgd.status_acked = acked; | |
4336 | sdata->u.mgd.status_received = true; | |
4337 | ||
4338 | ieee80211_queue_work(&local->hw, &sdata->work); | |
4339 | } | |
4340 | ||
1fa57d01 | 4341 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 4342 | { |
9c6bd790 | 4343 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 4344 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 4345 | |
8d61ffa5 | 4346 | sdata_lock(sdata); |
77fdaa12 | 4347 | |
1672c0e3 JB |
4348 | if (ifmgd->status_received) { |
4349 | __le16 fc = ifmgd->status_fc; | |
4350 | bool status_acked = ifmgd->status_acked; | |
4351 | ||
4352 | ifmgd->status_received = false; | |
46cad4b7 | 4353 | if (ifmgd->auth_data && ieee80211_is_auth(fc)) { |
1672c0e3 | 4354 | if (status_acked) { |
407879b6 IP |
4355 | if (ifmgd->auth_data->algorithm == |
4356 | WLAN_AUTH_SAE) | |
4357 | ifmgd->auth_data->timeout = | |
4358 | jiffies + | |
4359 | IEEE80211_AUTH_TIMEOUT_SAE; | |
4360 | else | |
4361 | ifmgd->auth_data->timeout = | |
4362 | jiffies + | |
4363 | IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 4364 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
4365 | } else { |
4366 | ifmgd->auth_data->timeout = jiffies - 1; | |
4367 | } | |
89afe614 | 4368 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
4369 | } else if (ifmgd->assoc_data && |
4370 | (ieee80211_is_assoc_req(fc) || | |
4371 | ieee80211_is_reassoc_req(fc))) { | |
4372 | if (status_acked) { | |
4373 | ifmgd->assoc_data->timeout = | |
4374 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 4375 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
4376 | } else { |
4377 | ifmgd->assoc_data->timeout = jiffies - 1; | |
4378 | } | |
89afe614 | 4379 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
4380 | } |
4381 | } | |
4382 | ||
89afe614 | 4383 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
4384 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
4385 | if (ifmgd->auth_data->done) { | |
4386 | /* | |
4387 | * ok ... we waited for assoc but userspace didn't, | |
4388 | * so let's just kill the auth data | |
4389 | */ | |
4390 | ieee80211_destroy_auth_data(sdata, false); | |
46cad4b7 | 4391 | } else if (ieee80211_auth(sdata)) { |
66e67e41 | 4392 | u8 bssid[ETH_ALEN]; |
a9409093 EG |
4393 | struct ieee80211_event event = { |
4394 | .type = MLME_EVENT, | |
4395 | .u.mlme.data = AUTH_EVENT, | |
4396 | .u.mlme.status = MLME_TIMEOUT, | |
4397 | }; | |
66e67e41 JB |
4398 | |
4399 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
4400 | ||
4401 | ieee80211_destroy_auth_data(sdata, false); | |
4402 | ||
6ff57cf8 | 4403 | cfg80211_auth_timeout(sdata->dev, bssid); |
a9409093 | 4404 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 4405 | } |
89afe614 | 4406 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 4407 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 4408 | |
89afe614 | 4409 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 4410 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 4411 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 4412 | ieee80211_do_assoc(sdata)) { |
959867fa | 4413 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
d0d1a12f EG |
4414 | struct ieee80211_event event = { |
4415 | .type = MLME_EVENT, | |
4416 | .u.mlme.data = ASSOC_EVENT, | |
4417 | .u.mlme.status = MLME_TIMEOUT, | |
4418 | }; | |
66e67e41 | 4419 | |
e6f462df | 4420 | ieee80211_destroy_assoc_data(sdata, false, false); |
959867fa | 4421 | cfg80211_assoc_timeout(sdata->dev, bss); |
d0d1a12f | 4422 | drv_event_callback(sdata->local, sdata, &event); |
66e67e41 | 4423 | } |
89afe614 | 4424 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 4425 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 4426 | |
392b9ffb | 4427 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 4428 | ifmgd->associated) { |
a43abf29 | 4429 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 4430 | int max_tries; |
a43abf29 | 4431 | |
0c1ad2ca | 4432 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 4433 | |
30686bf7 | 4434 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
180205bd | 4435 | max_tries = max_nullfunc_tries; |
72a8a3ed | 4436 | else |
180205bd | 4437 | max_tries = max_probe_tries; |
72a8a3ed | 4438 | |
4e5ff376 FF |
4439 | /* ACK received for nullfunc probing frame */ |
4440 | if (!ifmgd->probe_send_count) | |
4441 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
4442 | else if (ifmgd->nullfunc_failed) { |
4443 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
4444 | mlme_dbg(sdata, |
4445 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
4446 | bssid, ifmgd->probe_send_count, | |
4447 | max_tries); | |
04ac3c0e FF |
4448 | ieee80211_mgd_probe_ap_send(sdata); |
4449 | } else { | |
bdcbd8e0 JB |
4450 | mlme_dbg(sdata, |
4451 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
4452 | bssid); | |
95acac61 | 4453 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
4454 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
4455 | false); | |
04ac3c0e FF |
4456 | } |
4457 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 4458 | run_again(sdata, ifmgd->probe_timeout); |
30686bf7 | 4459 | else if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
bdcbd8e0 JB |
4460 | mlme_dbg(sdata, |
4461 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
4462 | bssid, probe_wait_ms); | |
95acac61 | 4463 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 4464 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 4465 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
4466 | mlme_dbg(sdata, |
4467 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
4468 | bssid, probe_wait_ms, | |
4469 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
4470 | ieee80211_mgd_probe_ap_send(sdata); |
4471 | } else { | |
b291ba11 JB |
4472 | /* |
4473 | * We actually lost the connection ... or did we? | |
4474 | * Let's make sure! | |
4475 | */ | |
89f774e6 JB |
4476 | mlme_dbg(sdata, |
4477 | "No probe response from AP %pM after %dms, disconnecting.\n", | |
4478 | bssid, probe_wait_ms); | |
04ac3c0e | 4479 | |
95acac61 | 4480 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 4481 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
4482 | } |
4483 | } | |
4484 | ||
8d61ffa5 | 4485 | sdata_unlock(sdata); |
f0706e82 JB |
4486 | } |
4487 | ||
34f11cd3 | 4488 | static void ieee80211_sta_bcn_mon_timer(struct timer_list *t) |
b291ba11 JB |
4489 | { |
4490 | struct ieee80211_sub_if_data *sdata = | |
34f11cd3 | 4491 | from_timer(sdata, t, u.mgd.bcn_mon_timer); |
0c21e632 | 4492 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 4493 | |
0c21e632 | 4494 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
4495 | return; |
4496 | ||
682bd38b | 4497 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
4498 | ieee80211_queue_work(&sdata->local->hw, |
4499 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
4500 | } |
4501 | ||
34f11cd3 | 4502 | static void ieee80211_sta_conn_mon_timer(struct timer_list *t) |
b291ba11 JB |
4503 | { |
4504 | struct ieee80211_sub_if_data *sdata = | |
34f11cd3 | 4505 | from_timer(sdata, t, u.mgd.conn_mon_timer); |
b291ba11 JB |
4506 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
4507 | struct ieee80211_local *local = sdata->local; | |
4508 | ||
0c21e632 | 4509 | if (sdata->vif.csa_active && !ifmgd->csa_waiting_bcn) |
e5593f56 MK |
4510 | return; |
4511 | ||
42935eca | 4512 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
4513 | } |
4514 | ||
4515 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
4516 | { | |
4517 | struct ieee80211_sub_if_data *sdata = | |
4518 | container_of(work, struct ieee80211_sub_if_data, | |
4519 | u.mgd.monitor_work); | |
4520 | ||
4521 | ieee80211_mgd_probe_ap(sdata, false); | |
4522 | } | |
4523 | ||
9c6bd790 JB |
4524 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
4525 | { | |
ad935687 | 4526 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 4527 | __ieee80211_stop_poll(sdata); |
ad935687 | 4528 | |
b291ba11 | 4529 | /* let's probe the connection once */ |
30686bf7 | 4530 | if (!ieee80211_hw_check(&sdata->local->hw, CONNECTION_MONITOR)) |
494f1fe5 EP |
4531 | ieee80211_queue_work(&sdata->local->hw, |
4532 | &sdata->u.mgd.monitor_work); | |
ad935687 | 4533 | } |
9c6bd790 | 4534 | } |
f0706e82 | 4535 | |
b8360ab8 | 4536 | #ifdef CONFIG_PM |
1a1cb744 JB |
4537 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
4538 | { | |
4539 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4540 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4541 | ||
4542 | sdata_lock(sdata); | |
4543 | ||
c52666ae EG |
4544 | if (ifmgd->auth_data || ifmgd->assoc_data) { |
4545 | const u8 *bssid = ifmgd->auth_data ? | |
4546 | ifmgd->auth_data->bss->bssid : | |
4547 | ifmgd->assoc_data->bss->bssid; | |
4548 | ||
1a1cb744 | 4549 | /* |
c52666ae EG |
4550 | * If we are trying to authenticate / associate while suspending, |
4551 | * cfg80211 won't know and won't actually abort those attempts, | |
4552 | * thus we need to do that ourselves. | |
1a1cb744 | 4553 | */ |
4b08d1b6 | 4554 | ieee80211_send_deauth_disassoc(sdata, bssid, bssid, |
1a1cb744 JB |
4555 | IEEE80211_STYPE_DEAUTH, |
4556 | WLAN_REASON_DEAUTH_LEAVING, | |
4557 | false, frame_buf); | |
c52666ae | 4558 | if (ifmgd->assoc_data) |
e6f462df | 4559 | ieee80211_destroy_assoc_data(sdata, false, true); |
c52666ae EG |
4560 | if (ifmgd->auth_data) |
4561 | ieee80211_destroy_auth_data(sdata, false); | |
1a1cb744 JB |
4562 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4563 | IEEE80211_DEAUTH_FRAME_LEN); | |
4564 | } | |
4565 | ||
be72afe0 JB |
4566 | /* This is a bit of a hack - we should find a better and more generic |
4567 | * solution to this. Normally when suspending, cfg80211 will in fact | |
4568 | * deauthenticate. However, it doesn't (and cannot) stop an ongoing | |
4569 | * auth (not so important) or assoc (this is the problem) process. | |
4570 | * | |
4571 | * As a consequence, it can happen that we are in the process of both | |
4572 | * associating and suspending, and receive an association response | |
4573 | * after cfg80211 has checked if it needs to disconnect, but before | |
4574 | * we actually set the flag to drop incoming frames. This will then | |
4575 | * cause the workqueue flush to process the association response in | |
4576 | * the suspend, resulting in a successful association just before it | |
4577 | * tries to remove the interface from the driver, which now though | |
4578 | * has a channel context assigned ... this results in issues. | |
4579 | * | |
4580 | * To work around this (for now) simply deauth here again if we're | |
4581 | * now connected. | |
4582 | */ | |
4583 | if (ifmgd->associated && !sdata->local->wowlan) { | |
4584 | u8 bssid[ETH_ALEN]; | |
4585 | struct cfg80211_deauth_request req = { | |
4586 | .reason_code = WLAN_REASON_DEAUTH_LEAVING, | |
4587 | .bssid = bssid, | |
4588 | }; | |
4589 | ||
4590 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); | |
4591 | ieee80211_mgd_deauth(sdata, &req); | |
4592 | } | |
4593 | ||
1a1cb744 JB |
4594 | sdata_unlock(sdata); |
4595 | } | |
4596 | ||
b8360ab8 JB |
4597 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
4598 | { | |
4599 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4600 | ||
8d61ffa5 | 4601 | sdata_lock(sdata); |
b8360ab8 | 4602 | if (!ifmgd->associated) { |
8d61ffa5 | 4603 | sdata_unlock(sdata); |
b8360ab8 JB |
4604 | return; |
4605 | } | |
4606 | ||
4607 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
4608 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
4609 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
4610 | ieee80211_sta_connection_lost(sdata, | |
4611 | ifmgd->associated->bssid, | |
4612 | WLAN_REASON_UNSPECIFIED, | |
4613 | true); | |
8d61ffa5 | 4614 | sdata_unlock(sdata); |
b8360ab8 JB |
4615 | return; |
4616 | } | |
8d61ffa5 | 4617 | sdata_unlock(sdata); |
b8360ab8 JB |
4618 | } |
4619 | #endif | |
4620 | ||
9c6bd790 JB |
4621 | /* interface setup */ |
4622 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 4623 | { |
46900298 | 4624 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 4625 | |
46900298 | 4626 | ifmgd = &sdata->u.mgd; |
b291ba11 | 4627 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 4628 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
4629 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
4630 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
4631 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
4632 | ieee80211_csa_connection_drop_work); | |
687da132 | 4633 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
81dd2b88 AN |
4634 | INIT_DELAYED_WORK(&ifmgd->tdls_peer_del_work, |
4635 | ieee80211_tdls_peer_del_work); | |
34f11cd3 KC |
4636 | timer_setup(&ifmgd->timer, ieee80211_sta_timer, 0); |
4637 | timer_setup(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 0); | |
4638 | timer_setup(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 0); | |
4639 | timer_setup(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 0); | |
02219b3a JB |
4640 | INIT_DELAYED_WORK(&ifmgd->tx_tspec_wk, |
4641 | ieee80211_sta_handle_tspec_ac_params_wk); | |
9c6bd790 | 4642 | |
ab1faead | 4643 | ifmgd->flags = 0; |
1478acb3 | 4644 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
4645 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
4646 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 4647 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 4648 | |
0d8614b4 | 4649 | if (sdata->local->hw.wiphy->features & NL80211_FEATURE_DYNAMIC_SMPS) |
0f78231b JB |
4650 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; |
4651 | else | |
4652 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
1277b4a9 LK |
4653 | |
4654 | /* Setup TDLS data */ | |
4655 | spin_lock_init(&ifmgd->teardown_lock); | |
4656 | ifmgd->teardown_skb = NULL; | |
4657 | ifmgd->orig_teardown_skb = NULL; | |
f0706e82 JB |
4658 | } |
4659 | ||
77fdaa12 JB |
4660 | /* scan finished notification */ |
4661 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 4662 | { |
31ee67a1 | 4663 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 4664 | |
77fdaa12 JB |
4665 | /* Restart STA timers */ |
4666 | rcu_read_lock(); | |
370bd005 BG |
4667 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
4668 | if (ieee80211_sdata_running(sdata)) | |
4669 | ieee80211_restart_sta_timer(sdata); | |
4670 | } | |
77fdaa12 JB |
4671 | rcu_read_unlock(); |
4672 | } | |
60f8b39c | 4673 | |
f2d9d270 JB |
4674 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
4675 | struct cfg80211_bss *cbss) | |
4676 | { | |
4677 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4678 | const u8 *ht_cap_ie, *vht_cap_ie; | |
4679 | const struct ieee80211_ht_cap *ht_cap; | |
4680 | const struct ieee80211_vht_cap *vht_cap; | |
4681 | u8 chains = 1; | |
4682 | ||
4683 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
4684 | return chains; | |
4685 | ||
9caf0364 | 4686 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
4687 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
4688 | ht_cap = (void *)(ht_cap_ie + 2); | |
4689 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
4690 | /* | |
4691 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
4692 | * "Tx Unequal Modulation Supported" fields. | |
4693 | */ | |
4694 | } | |
4695 | ||
4696 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
4697 | return chains; | |
4698 | ||
9caf0364 | 4699 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
4700 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
4701 | u8 nss; | |
4702 | u16 tx_mcs_map; | |
4703 | ||
4704 | vht_cap = (void *)(vht_cap_ie + 2); | |
4705 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
4706 | for (nss = 8; nss > 0; nss--) { | |
4707 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
4708 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
4709 | break; | |
4710 | } | |
4711 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
4712 | chains = max(chains, nss); | |
4713 | } | |
4714 | ||
4715 | return chains; | |
4716 | } | |
4717 | ||
41cbb0f5 LC |
4718 | static bool |
4719 | ieee80211_verify_sta_he_mcs_support(struct ieee80211_supported_band *sband, | |
4720 | const struct ieee80211_he_operation *he_op) | |
4721 | { | |
4722 | const struct ieee80211_sta_he_cap *sta_he_cap = | |
4723 | ieee80211_get_he_sta_cap(sband); | |
47aa7861 | 4724 | u16 ap_min_req_set; |
41cbb0f5 LC |
4725 | int i; |
4726 | ||
4727 | if (!sta_he_cap || !he_op) | |
4728 | return false; | |
4729 | ||
47aa7861 GS |
4730 | ap_min_req_set = le16_to_cpu(he_op->he_mcs_nss_set); |
4731 | ||
41cbb0f5 LC |
4732 | /* Need to go over for 80MHz, 160MHz and for 80+80 */ |
4733 | for (i = 0; i < 3; i++) { | |
4734 | const struct ieee80211_he_mcs_nss_supp *sta_mcs_nss_supp = | |
4735 | &sta_he_cap->he_mcs_nss_supp; | |
4736 | u16 sta_mcs_map_rx = | |
4737 | le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i]); | |
4738 | u16 sta_mcs_map_tx = | |
4739 | le16_to_cpu(((__le16 *)sta_mcs_nss_supp)[2 * i + 1]); | |
4740 | u8 nss; | |
4741 | bool verified = true; | |
4742 | ||
4743 | /* | |
4744 | * For each band there is a maximum of 8 spatial streams | |
4745 | * possible. Each of the sta_mcs_map_* is a 16-bit struct built | |
4746 | * of 2 bits per NSS (1-8), with the values defined in enum | |
4747 | * ieee80211_he_mcs_support. Need to make sure STA TX and RX | |
4748 | * capabilities aren't less than the AP's minimum requirements | |
4749 | * for this HE BSS per SS. | |
4750 | * It is enough to find one such band that meets the reqs. | |
4751 | */ | |
4752 | for (nss = 8; nss > 0; nss--) { | |
4753 | u8 sta_rx_val = (sta_mcs_map_rx >> (2 * (nss - 1))) & 3; | |
4754 | u8 sta_tx_val = (sta_mcs_map_tx >> (2 * (nss - 1))) & 3; | |
4755 | u8 ap_val = (ap_min_req_set >> (2 * (nss - 1))) & 3; | |
4756 | ||
4757 | if (ap_val == IEEE80211_HE_MCS_NOT_SUPPORTED) | |
4758 | continue; | |
4759 | ||
4760 | /* | |
4761 | * Make sure the HE AP doesn't require MCSs that aren't | |
4762 | * supported by the client | |
4763 | */ | |
4764 | if (sta_rx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || | |
4765 | sta_tx_val == IEEE80211_HE_MCS_NOT_SUPPORTED || | |
4766 | (ap_val > sta_rx_val) || (ap_val > sta_tx_val)) { | |
4767 | verified = false; | |
4768 | break; | |
4769 | } | |
4770 | } | |
4771 | ||
4772 | if (verified) | |
4773 | return true; | |
4774 | } | |
4775 | ||
4776 | /* If here, STA doesn't meet AP's HE min requirements */ | |
4777 | return false; | |
4778 | } | |
4779 | ||
b17166a7 JB |
4780 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
4781 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
4782 | { |
4783 | struct ieee80211_local *local = sdata->local; | |
4784 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
53b954ee | 4785 | const struct ieee80211_ht_cap *ht_cap = NULL; |
24398e39 | 4786 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 4787 | const struct ieee80211_vht_operation *vht_oper = NULL; |
41cbb0f5 | 4788 | const struct ieee80211_he_operation *he_oper = NULL; |
24398e39 | 4789 | struct ieee80211_supported_band *sband; |
4bf88530 | 4790 | struct cfg80211_chan_def chandef; |
f2d9d270 | 4791 | int ret; |
52a45f38 AN |
4792 | u32 i; |
4793 | bool have_80mhz; | |
a1cf775d | 4794 | |
24398e39 JB |
4795 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4796 | ||
f2d9d270 JB |
4797 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
4798 | IEEE80211_STA_DISABLE_80P80MHZ | | |
4799 | IEEE80211_STA_DISABLE_160MHZ); | |
4800 | ||
75e296e9 JB |
4801 | /* disable HT/VHT/HE if we don't support them */ |
4802 | if (!sband->ht_cap.ht_supported) { | |
4803 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
4804 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4805 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; | |
4806 | } | |
4807 | ||
4808 | if (!sband->vht_cap.vht_supported) | |
4809 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4810 | ||
4811 | if (!ieee80211_get_he_sta_cap(sband)) | |
4812 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; | |
4813 | ||
9caf0364 JB |
4814 | rcu_read_lock(); |
4815 | ||
75e296e9 | 4816 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { |
53b954ee | 4817 | const u8 *ht_oper_ie, *ht_cap_ie; |
24398e39 | 4818 | |
9caf0364 | 4819 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
4820 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
4821 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa | 4822 | |
53b954ee EP |
4823 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
4824 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) | |
4825 | ht_cap = (void *)(ht_cap_ie + 2); | |
4826 | ||
4827 | if (!ht_cap) { | |
08e6effa JB |
4828 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4829 | ht_oper = NULL; | |
4830 | } | |
24398e39 JB |
4831 | } |
4832 | ||
75e296e9 | 4833 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { |
08e6effa | 4834 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 4835 | |
9caf0364 JB |
4836 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
4837 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
4838 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
4839 | vht_oper = (void *)(vht_oper_ie + 2); | |
4840 | if (vht_oper && !ht_oper) { | |
4841 | vht_oper = NULL; | |
bdcbd8e0 | 4842 | sdata_info(sdata, |
75e296e9 | 4843 | "AP advertised VHT without HT, disabling HT/VHT/HE\n"); |
cb145022 JB |
4844 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
4845 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
75e296e9 | 4846 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; |
24398e39 | 4847 | } |
08e6effa JB |
4848 | |
4849 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
4850 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
4851 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4852 | vht_oper = NULL; | |
4853 | } | |
24398e39 JB |
4854 | } |
4855 | ||
002245ec | 4856 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HE)) { |
41cbb0f5 LC |
4857 | const struct cfg80211_bss_ies *ies; |
4858 | const u8 *he_oper_ie; | |
4859 | ||
4860 | ies = rcu_dereference(cbss->ies); | |
4861 | he_oper_ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, | |
4862 | ies->data, ies->len); | |
4863 | if (he_oper_ie && | |
4864 | he_oper_ie[1] == ieee80211_he_oper_size(&he_oper_ie[3])) | |
4865 | he_oper = (void *)(he_oper_ie + 3); | |
4866 | else | |
4867 | he_oper = NULL; | |
4868 | ||
f0c0407d | 4869 | if (!ieee80211_verify_sta_he_mcs_support(sband, he_oper)) |
41cbb0f5 LC |
4870 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; |
4871 | } | |
4872 | ||
52a45f38 AN |
4873 | /* Allow VHT if at least one channel on the sband supports 80 MHz */ |
4874 | have_80mhz = false; | |
4875 | for (i = 0; i < sband->n_channels; i++) { | |
4876 | if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED | | |
4877 | IEEE80211_CHAN_NO_80MHZ)) | |
4878 | continue; | |
4879 | ||
4880 | have_80mhz = true; | |
4881 | break; | |
4882 | } | |
4883 | ||
4884 | if (!have_80mhz) | |
4885 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4886 | ||
f2d9d270 JB |
4887 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
4888 | cbss->channel, | |
41cbb0f5 | 4889 | ht_oper, vht_oper, he_oper, |
5cdaed1e | 4890 | &chandef, false); |
04ecd257 | 4891 | |
f2d9d270 JB |
4892 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
4893 | local->rx_chains); | |
24398e39 | 4894 | |
9caf0364 JB |
4895 | rcu_read_unlock(); |
4896 | ||
04ecd257 JB |
4897 | /* will change later if needed */ |
4898 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
4899 | ||
34a3740d | 4900 | mutex_lock(&local->mtx); |
f2d9d270 JB |
4901 | /* |
4902 | * If this fails (possibly due to channel context sharing | |
4903 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
4904 | * same control channel) try to use a smaller bandwidth. | |
4905 | */ | |
4906 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
4907 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
4908 | |
4909 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
4910 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
4911 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 4912 | goto out; |
0418a445 | 4913 | |
d601cd8d | 4914 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 4915 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
4916 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
4917 | IEEE80211_CHANCTX_SHARED); | |
4918 | } | |
34a3740d JB |
4919 | out: |
4920 | mutex_unlock(&local->mtx); | |
f2d9d270 | 4921 | return ret; |
b17166a7 JB |
4922 | } |
4923 | ||
78ac51f8 SS |
4924 | static bool ieee80211_get_dtim(const struct cfg80211_bss_ies *ies, |
4925 | u8 *dtim_count, u8 *dtim_period) | |
4926 | { | |
4927 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, ies->data, ies->len); | |
4928 | const u8 *idx_ie = cfg80211_find_ie(WLAN_EID_MULTI_BSSID_IDX, ies->data, | |
4929 | ies->len); | |
4930 | const struct ieee80211_tim_ie *tim = NULL; | |
4931 | const struct ieee80211_bssid_index *idx; | |
4932 | bool valid = tim_ie && tim_ie[1] >= 2; | |
4933 | ||
4934 | if (valid) | |
4935 | tim = (void *)(tim_ie + 2); | |
4936 | ||
4937 | if (dtim_count) | |
4938 | *dtim_count = valid ? tim->dtim_count : 0; | |
4939 | ||
4940 | if (dtim_period) | |
4941 | *dtim_period = valid ? tim->dtim_period : 0; | |
4942 | ||
4943 | /* Check if value is overridden by non-transmitted profile */ | |
4944 | if (!idx_ie || idx_ie[1] < 3) | |
4945 | return valid; | |
4946 | ||
4947 | idx = (void *)(idx_ie + 2); | |
4948 | ||
4949 | if (dtim_count) | |
4950 | *dtim_count = idx->dtim_count; | |
4951 | ||
4952 | if (dtim_period) | |
4953 | *dtim_period = idx->dtim_period; | |
4954 | ||
4955 | return true; | |
4956 | } | |
4957 | ||
b17166a7 | 4958 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, |
c1041f10 CRI |
4959 | struct cfg80211_bss *cbss, bool assoc, |
4960 | bool override) | |
b17166a7 JB |
4961 | { |
4962 | struct ieee80211_local *local = sdata->local; | |
4963 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4964 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
4965 | struct sta_info *new_sta = NULL; | |
179b8fc7 | 4966 | struct ieee80211_supported_band *sband; |
c1041f10 | 4967 | bool have_sta = false; |
b17166a7 JB |
4968 | int err; |
4969 | ||
179b8fc7 CRI |
4970 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
4971 | ||
b17166a7 JB |
4972 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) |
4973 | return -EINVAL; | |
4974 | ||
f8860ce8 LC |
4975 | /* If a reconfig is happening, bail out */ |
4976 | if (local->in_reconfig) | |
4977 | return -EBUSY; | |
4978 | ||
b17166a7 JB |
4979 | if (assoc) { |
4980 | rcu_read_lock(); | |
4981 | have_sta = sta_info_get(sdata, cbss->bssid); | |
4982 | rcu_read_unlock(); | |
4983 | } | |
4984 | ||
4985 | if (!have_sta) { | |
4986 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
4987 | if (!new_sta) | |
4988 | return -ENOMEM; | |
4989 | } | |
179b8fc7 | 4990 | |
c87905be JB |
4991 | /* |
4992 | * Set up the information for the new channel before setting the | |
4993 | * new channel. We can't - completely race-free - change the basic | |
4994 | * rates bitmap and the channel (sband) that it refers to, but if | |
4995 | * we set it up before we at least avoid calling into the driver's | |
4996 | * bss_info_changed() method with invalid information (since we do | |
4997 | * call that from changing the channel - only for IDLE and perhaps | |
4998 | * some others, but ...). | |
4999 | * | |
5000 | * So to avoid that, just set up all the new information before the | |
5001 | * channel, but tell the driver to apply it only afterwards, since | |
5002 | * it might need the new channel for that. | |
5003 | */ | |
13e0c8e3 | 5004 | if (new_sta) { |
5d6a1b06 JB |
5005 | u32 rates = 0, basic_rates = 0; |
5006 | bool have_higher_than_11mbit; | |
5007 | int min_rate = INT_MAX, min_rate_index = -1; | |
8cef2c9d | 5008 | const struct cfg80211_bss_ies *ies; |
179b8fc7 | 5009 | int shift = ieee80211_vif_get_shift(&sdata->vif); |
5d6a1b06 | 5010 | |
5d6a1b06 JB |
5011 | ieee80211_get_rates(sband, bss->supp_rates, |
5012 | bss->supp_rates_len, | |
5013 | &rates, &basic_rates, | |
5014 | &have_higher_than_11mbit, | |
2103dec1 | 5015 | &min_rate, &min_rate_index, |
44f6d42c | 5016 | shift); |
5d6a1b06 JB |
5017 | |
5018 | /* | |
5019 | * This used to be a workaround for basic rates missing | |
5020 | * in the association response frame. Now that we no | |
5021 | * longer use the basic rates from there, it probably | |
5022 | * doesn't happen any more, but keep the workaround so | |
5023 | * in case some *other* APs are buggy in different ways | |
5024 | * we can connect -- with a warning. | |
5025 | */ | |
5026 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
5027 | sdata_info(sdata, |
5028 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
5029 | basic_rates = BIT(min_rate_index); |
5030 | } | |
5031 | ||
bd718fc1 JB |
5032 | if (rates) |
5033 | new_sta->sta.supp_rates[cbss->channel->band] = rates; | |
5034 | else | |
5035 | sdata_info(sdata, | |
5036 | "No rates found, keeping mandatory only\n"); | |
5037 | ||
5d6a1b06 JB |
5038 | sdata->vif.bss_conf.basic_rates = basic_rates; |
5039 | ||
5040 | /* cf. IEEE 802.11 9.2.12 */ | |
57fbcce3 | 5041 | if (cbss->channel->band == NL80211_BAND_2GHZ && |
5d6a1b06 JB |
5042 | have_higher_than_11mbit) |
5043 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
5044 | else | |
5045 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
5046 | ||
5047 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
5048 | ||
8c358bcd JB |
5049 | /* set timing information */ |
5050 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 5051 | rcu_read_lock(); |
ef429dad JB |
5052 | ies = rcu_dereference(cbss->beacon_ies); |
5053 | if (ies) { | |
ef429dad JB |
5054 | sdata->vif.bss_conf.sync_tsf = ies->tsf; |
5055 | sdata->vif.bss_conf.sync_device_ts = | |
5056 | bss->device_ts_beacon; | |
78ac51f8 SS |
5057 | |
5058 | ieee80211_get_dtim(ies, | |
5059 | &sdata->vif.bss_conf.sync_dtim_count, | |
5060 | NULL); | |
30686bf7 JB |
5061 | } else if (!ieee80211_hw_check(&sdata->local->hw, |
5062 | TIMING_BEACON_ONLY)) { | |
ef429dad JB |
5063 | ies = rcu_dereference(cbss->proberesp_ies); |
5064 | /* must be non-NULL since beacon IEs were NULL */ | |
5065 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
5066 | sdata->vif.bss_conf.sync_device_ts = | |
5067 | bss->device_ts_presp; | |
5068 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
5069 | } else { | |
5070 | sdata->vif.bss_conf.sync_tsf = 0; | |
5071 | sdata->vif.bss_conf.sync_device_ts = 0; | |
5072 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
5073 | } | |
8cef2c9d | 5074 | rcu_read_unlock(); |
c87905be | 5075 | } |
8c358bcd | 5076 | |
c87905be JB |
5077 | if (new_sta || override) { |
5078 | err = ieee80211_prep_channel(sdata, cbss); | |
5079 | if (err) { | |
5080 | if (new_sta) | |
5081 | sta_info_free(local, new_sta); | |
5082 | return -EINVAL; | |
5083 | } | |
5084 | } | |
5085 | ||
5086 | if (new_sta) { | |
5087 | /* | |
5088 | * tell driver about BSSID, basic rates and timing | |
5089 | * this was set up above, before setting the channel | |
5090 | */ | |
5d6a1b06 | 5091 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
5092 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
5093 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
5094 | |
5095 | if (assoc) | |
13e0c8e3 | 5096 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 5097 | |
13e0c8e3 JB |
5098 | err = sta_info_insert(new_sta); |
5099 | new_sta = NULL; | |
a1cf775d | 5100 | if (err) { |
bdcbd8e0 JB |
5101 | sdata_info(sdata, |
5102 | "failed to insert STA entry for the AP (error %d)\n", | |
5103 | err); | |
a1cf775d JB |
5104 | return err; |
5105 | } | |
5106 | } else | |
b203ca39 | 5107 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d | 5108 | |
7d830a19 DS |
5109 | /* Cancel scan to ensure that nothing interferes with connection */ |
5110 | if (local->scanning) | |
5111 | ieee80211_scan_cancel(local); | |
5112 | ||
a1cf775d JB |
5113 | return 0; |
5114 | } | |
5115 | ||
77fdaa12 JB |
5116 | /* config hooks */ |
5117 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
5118 | struct cfg80211_auth_request *req) | |
9c6bd790 | 5119 | { |
66e67e41 JB |
5120 | struct ieee80211_local *local = sdata->local; |
5121 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5122 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 5123 | u16 auth_alg; |
66e67e41 | 5124 | int err; |
efb543e6 | 5125 | bool cont_auth; |
66e67e41 JB |
5126 | |
5127 | /* prepare auth data structure */ | |
9c6bd790 | 5128 | |
77fdaa12 JB |
5129 | switch (req->auth_type) { |
5130 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
5131 | auth_alg = WLAN_AUTH_OPEN; | |
5132 | break; | |
5133 | case NL80211_AUTHTYPE_SHARED_KEY: | |
5fdb3735 | 5134 | if (fips_enabled) |
9dca9c49 | 5135 | return -EOPNOTSUPP; |
77fdaa12 JB |
5136 | auth_alg = WLAN_AUTH_SHARED_KEY; |
5137 | break; | |
5138 | case NL80211_AUTHTYPE_FT: | |
5139 | auth_alg = WLAN_AUTH_FT; | |
5140 | break; | |
5141 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
5142 | auth_alg = WLAN_AUTH_LEAP; | |
5143 | break; | |
6b8ece3a JM |
5144 | case NL80211_AUTHTYPE_SAE: |
5145 | auth_alg = WLAN_AUTH_SAE; | |
5146 | break; | |
dbc0c2cb JM |
5147 | case NL80211_AUTHTYPE_FILS_SK: |
5148 | auth_alg = WLAN_AUTH_FILS_SK; | |
5149 | break; | |
5150 | case NL80211_AUTHTYPE_FILS_SK_PFS: | |
5151 | auth_alg = WLAN_AUTH_FILS_SK_PFS; | |
5152 | break; | |
5153 | case NL80211_AUTHTYPE_FILS_PK: | |
5154 | auth_alg = WLAN_AUTH_FILS_PK; | |
5155 | break; | |
77fdaa12 JB |
5156 | default: |
5157 | return -EOPNOTSUPP; | |
60f8b39c | 5158 | } |
77fdaa12 | 5159 | |
efb543e6 | 5160 | if (ifmgd->assoc_data) |
8d7432a2 JM |
5161 | return -EBUSY; |
5162 | ||
11b6b5a4 | 5163 | auth_data = kzalloc(sizeof(*auth_data) + req->auth_data_len + |
6b8ece3a | 5164 | req->ie_len, GFP_KERNEL); |
66e67e41 | 5165 | if (!auth_data) |
9c6bd790 | 5166 | return -ENOMEM; |
77fdaa12 | 5167 | |
66e67e41 | 5168 | auth_data->bss = req->bss; |
77fdaa12 | 5169 | |
11b6b5a4 | 5170 | if (req->auth_data_len >= 4) { |
6ec63612 JM |
5171 | if (req->auth_type == NL80211_AUTHTYPE_SAE) { |
5172 | __le16 *pos = (__le16 *) req->auth_data; | |
5173 | ||
5174 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
5175 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
5176 | } | |
11b6b5a4 JM |
5177 | memcpy(auth_data->data, req->auth_data + 4, |
5178 | req->auth_data_len - 4); | |
5179 | auth_data->data_len += req->auth_data_len - 4; | |
6b8ece3a JM |
5180 | } |
5181 | ||
efb543e6 JM |
5182 | /* Check if continuing authentication or trying to authenticate with the |
5183 | * same BSS that we were in the process of authenticating with and avoid | |
5184 | * removal and re-addition of the STA entry in | |
5185 | * ieee80211_prep_connection(). | |
5186 | */ | |
5187 | cont_auth = ifmgd->auth_data && req->bss == ifmgd->auth_data->bss; | |
5188 | ||
77fdaa12 | 5189 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
5190 | memcpy(&auth_data->data[auth_data->data_len], |
5191 | req->ie, req->ie_len); | |
5192 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 5193 | } |
77fdaa12 | 5194 | |
fffd0934 | 5195 | if (req->key && req->key_len) { |
66e67e41 JB |
5196 | auth_data->key_len = req->key_len; |
5197 | auth_data->key_idx = req->key_idx; | |
5198 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
5199 | } |
5200 | ||
66e67e41 | 5201 | auth_data->algorithm = auth_alg; |
60f8b39c | 5202 | |
66e67e41 | 5203 | /* try to authenticate/probe */ |
2a33bee2 | 5204 | |
efb543e6 JM |
5205 | if (ifmgd->auth_data) { |
5206 | if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE) { | |
5207 | auth_data->peer_confirmed = | |
5208 | ifmgd->auth_data->peer_confirmed; | |
5209 | } | |
5210 | ieee80211_destroy_auth_data(sdata, cont_auth); | |
5211 | } | |
2a33bee2 | 5212 | |
66e67e41 JB |
5213 | /* prep auth_data so we don't go into idle on disassoc */ |
5214 | ifmgd->auth_data = auth_data; | |
af6b6374 | 5215 | |
efb543e6 JM |
5216 | /* If this is continuation of an ongoing SAE authentication exchange |
5217 | * (i.e., request to send SAE Confirm) and the peer has already | |
5218 | * confirmed, mark authentication completed since we are about to send | |
5219 | * out SAE Confirm. | |
5220 | */ | |
5221 | if (cont_auth && req->auth_type == NL80211_AUTHTYPE_SAE && | |
5222 | auth_data->peer_confirmed && auth_data->sae_trans == 2) | |
5223 | ieee80211_mark_sta_auth(sdata, req->bss->bssid); | |
5224 | ||
7b119dc0 JB |
5225 | if (ifmgd->associated) { |
5226 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
5227 | ||
89f774e6 JB |
5228 | sdata_info(sdata, |
5229 | "disconnect from AP %pM for new auth to %pM\n", | |
5230 | ifmgd->associated->bssid, req->bss->bssid); | |
7b119dc0 JB |
5231 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
5232 | WLAN_REASON_UNSPECIFIED, | |
5233 | false, frame_buf); | |
5234 | ||
a90faa9d EG |
5235 | ieee80211_report_disconnect(sdata, frame_buf, |
5236 | sizeof(frame_buf), true, | |
5237 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 5238 | } |
af6b6374 | 5239 | |
bdcbd8e0 | 5240 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 5241 | |
efb543e6 | 5242 | err = ieee80211_prep_connection(sdata, req->bss, cont_auth, false); |
a1cf775d | 5243 | if (err) |
66e67e41 | 5244 | goto err_clear; |
af6b6374 | 5245 | |
46cad4b7 | 5246 | err = ieee80211_auth(sdata); |
66e67e41 | 5247 | if (err) { |
66e67e41 JB |
5248 | sta_info_destroy_addr(sdata, req->bss->bssid); |
5249 | goto err_clear; | |
5250 | } | |
5251 | ||
5252 | /* hold our own reference */ | |
5b112d3d | 5253 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 5254 | return 0; |
66e67e41 JB |
5255 | |
5256 | err_clear: | |
c84a67a2 | 5257 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 5258 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 | 5259 | ifmgd->auth_data = NULL; |
d01f858c MK |
5260 | mutex_lock(&sdata->local->mtx); |
5261 | ieee80211_vif_release_channel(sdata); | |
5262 | mutex_unlock(&sdata->local->mtx); | |
66e67e41 | 5263 | kfree(auth_data); |
66e67e41 | 5264 | return err; |
af6b6374 JB |
5265 | } |
5266 | ||
77fdaa12 JB |
5267 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
5268 | struct cfg80211_assoc_request *req) | |
f0706e82 | 5269 | { |
66e67e41 | 5270 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 5271 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 5272 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 5273 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 5274 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 5275 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 5276 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 5277 | int i, err; |
c1041f10 | 5278 | bool override = false; |
f0706e82 | 5279 | |
66e67e41 JB |
5280 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
5281 | if (!assoc_data) | |
5282 | return -ENOMEM; | |
5283 | ||
9caf0364 JB |
5284 | rcu_read_lock(); |
5285 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4152561f | 5286 | if (!ssidie || ssidie[1] > sizeof(assoc_data->ssid)) { |
9caf0364 JB |
5287 | rcu_read_unlock(); |
5288 | kfree(assoc_data); | |
5289 | return -EINVAL; | |
5290 | } | |
5291 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
5292 | assoc_data->ssid_len = ssidie[1]; | |
5293 | rcu_read_unlock(); | |
5294 | ||
7b119dc0 JB |
5295 | if (ifmgd->associated) { |
5296 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
5297 | ||
89f774e6 JB |
5298 | sdata_info(sdata, |
5299 | "disconnect from AP %pM for new assoc to %pM\n", | |
5300 | ifmgd->associated->bssid, req->bss->bssid); | |
7b119dc0 JB |
5301 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
5302 | WLAN_REASON_UNSPECIFIED, | |
5303 | false, frame_buf); | |
5304 | ||
a90faa9d EG |
5305 | ieee80211_report_disconnect(sdata, frame_buf, |
5306 | sizeof(frame_buf), true, | |
5307 | WLAN_REASON_UNSPECIFIED); | |
7b119dc0 | 5308 | } |
66e67e41 JB |
5309 | |
5310 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
5311 | err = -EBUSY; | |
5312 | goto err_free; | |
af6b6374 | 5313 | } |
77fdaa12 | 5314 | |
66e67e41 JB |
5315 | if (ifmgd->assoc_data) { |
5316 | err = -EBUSY; | |
5317 | goto err_free; | |
5318 | } | |
77fdaa12 | 5319 | |
66e67e41 JB |
5320 | if (ifmgd->auth_data) { |
5321 | bool match; | |
5322 | ||
5323 | /* keep sta info, bssid if matching */ | |
b203ca39 | 5324 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 5325 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
5326 | } |
5327 | ||
66e67e41 | 5328 | /* prepare assoc data */ |
095d81ce | 5329 | |
d8ec4433 JO |
5330 | ifmgd->beacon_crc_valid = false; |
5331 | ||
095d81ce JB |
5332 | assoc_data->wmm = bss->wmm_used && |
5333 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
095d81ce | 5334 | |
de5036aa JB |
5335 | /* |
5336 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
5337 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
5338 | * ciphers is configured as pairwise. | |
5339 | * We can set this to true for non-11n hardware, that'll be checked | |
5340 | * separately along with the peer capabilities. | |
5341 | */ | |
1c4cb928 | 5342 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
5343 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
5344 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 5345 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 5346 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 5347 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
41cbb0f5 | 5348 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; |
1c4cb928 | 5349 | netdev_info(sdata->dev, |
54626324 | 5350 | "disabling HT/VHT/HE due to WEP/TKIP use\n"); |
1c4cb928 JB |
5351 | } |
5352 | } | |
77fdaa12 | 5353 | |
4e74bfdb | 5354 | sband = local->hw.wiphy->bands[req->bss->channel->band]; |
4e74bfdb | 5355 | |
75e296e9 JB |
5356 | /* also disable HT/VHT/HE if the AP doesn't use WMM */ |
5357 | if (!bss->wmm_used) { | |
5358 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
d545daba | 5359 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
75e296e9 JB |
5360 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; |
5361 | netdev_info(sdata->dev, | |
5362 | "disabling HT/VHT/HE as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
5363 | } |
5364 | ||
ef96a842 BG |
5365 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
5366 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
5367 | sizeof(ifmgd->ht_capa_mask)); | |
5368 | ||
dd5ecfea JB |
5369 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
5370 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
5371 | sizeof(ifmgd->vht_capa_mask)); | |
5372 | ||
77fdaa12 | 5373 | if (req->ie && req->ie_len) { |
66e67e41 JB |
5374 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
5375 | assoc_data->ie_len = req->ie_len; | |
5376 | } | |
f679f65d | 5377 | |
39404fee JM |
5378 | if (req->fils_kek) { |
5379 | /* should already be checked in cfg80211 - so warn */ | |
5380 | if (WARN_ON(req->fils_kek_len > FILS_MAX_KEK_LEN)) { | |
5381 | err = -EINVAL; | |
5382 | goto err_free; | |
5383 | } | |
5384 | memcpy(assoc_data->fils_kek, req->fils_kek, | |
5385 | req->fils_kek_len); | |
5386 | assoc_data->fils_kek_len = req->fils_kek_len; | |
5387 | } | |
5388 | ||
5389 | if (req->fils_nonces) | |
5390 | memcpy(assoc_data->fils_nonces, req->fils_nonces, | |
5391 | 2 * FILS_NONCE_LEN); | |
5392 | ||
66e67e41 | 5393 | assoc_data->bss = req->bss; |
f679f65d | 5394 | |
af6b6374 JB |
5395 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
5396 | if (ifmgd->powersave) | |
04ecd257 | 5397 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 5398 | else |
04ecd257 | 5399 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 5400 | } else |
04ecd257 | 5401 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 5402 | |
66e67e41 | 5403 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
5404 | assoc_data->supp_rates = bss->supp_rates; |
5405 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 5406 | |
9caf0364 | 5407 | rcu_read_lock(); |
9dde6423 JB |
5408 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
5409 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
5410 | assoc_data->ap_ht_param = | |
5411 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
5412 | else | |
a8243b72 | 5413 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
5414 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
5415 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
5416 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
5417 | sizeof(struct ieee80211_vht_cap)); | |
5418 | else | |
5419 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 5420 | rcu_read_unlock(); |
63f170e0 | 5421 | |
848955cc | 5422 | if (WARN((sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD) && |
30686bf7 | 5423 | ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK), |
848955cc JB |
5424 | "U-APSD not supported with HW_PS_NULLFUNC_STACK\n")) |
5425 | sdata->vif.driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; | |
5426 | ||
ab13315a | 5427 | if (bss->wmm_used && bss->uapsd_supported && |
848955cc | 5428 | (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_UAPSD)) { |
76f0303d | 5429 | assoc_data->uapsd = true; |
ab13315a KV |
5430 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
5431 | } else { | |
76f0303d | 5432 | assoc_data->uapsd = false; |
ab13315a KV |
5433 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
5434 | } | |
5435 | ||
77fdaa12 | 5436 | if (req->prev_bssid) |
66e67e41 | 5437 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
5438 | |
5439 | if (req->use_mfp) { | |
5440 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
5441 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
5442 | } else { | |
5443 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
5444 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
5445 | } | |
5446 | ||
cd2f5dd7 AK |
5447 | if (req->flags & ASSOC_REQ_USE_RRM) |
5448 | ifmgd->flags |= IEEE80211_STA_ENABLE_RRM; | |
5449 | else | |
5450 | ifmgd->flags &= ~IEEE80211_STA_ENABLE_RRM; | |
5451 | ||
77fdaa12 JB |
5452 | if (req->crypto.control_port) |
5453 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
5454 | else | |
5455 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
5456 | ||
a621fa4d JB |
5457 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
5458 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
018f6fbf DK |
5459 | sdata->control_port_over_nl80211 = |
5460 | req->crypto.control_port_over_nl80211; | |
7f3f96ce | 5461 | sdata->control_port_no_preauth = req->crypto.control_port_no_preauth; |
2475b1cc MS |
5462 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
5463 | sdata->vif.type); | |
a621fa4d | 5464 | |
66e67e41 JB |
5465 | /* kick off associate process */ |
5466 | ||
5467 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 5468 | ifmgd->dtim_period = 0; |
989c6505 | 5469 | ifmgd->have_beacon = false; |
66e67e41 | 5470 | |
c1041f10 CRI |
5471 | /* override HT/VHT configuration only if the AP and we support it */ |
5472 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
5473 | struct ieee80211_sta_ht_cap sta_ht_cap; | |
5474 | ||
5475 | if (req->flags & ASSOC_REQ_DISABLE_HT) | |
5476 | override = true; | |
5477 | ||
5478 | memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap)); | |
5479 | ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap); | |
5480 | ||
5481 | /* check for 40 MHz disable override */ | |
5482 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ) && | |
5483 | sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 && | |
5484 | !(sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)) | |
5485 | override = true; | |
5486 | ||
5487 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
5488 | req->flags & ASSOC_REQ_DISABLE_VHT) | |
5489 | override = true; | |
5490 | } | |
5491 | ||
5492 | if (req->flags & ASSOC_REQ_DISABLE_HT) { | |
5493 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
5494 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
75e296e9 | 5495 | ifmgd->flags |= IEEE80211_STA_DISABLE_HE; |
c1041f10 CRI |
5496 | } |
5497 | ||
5498 | if (req->flags & ASSOC_REQ_DISABLE_VHT) | |
5499 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
5500 | ||
5501 | err = ieee80211_prep_connection(sdata, req->bss, true, override); | |
a1cf775d JB |
5502 | if (err) |
5503 | goto err_clear; | |
66e67e41 | 5504 | |
c65dd147 EG |
5505 | rcu_read_lock(); |
5506 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 5507 | |
30686bf7 | 5508 | if (ieee80211_hw_check(&sdata->local->hw, NEED_DTIM_BEFORE_ASSOC) && |
c65dd147 EG |
5509 | !beacon_ies) { |
5510 | /* | |
5511 | * Wait up to one beacon interval ... | |
5512 | * should this be more if we miss one? | |
5513 | */ | |
5514 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
5515 | ifmgd->bssid); | |
5516 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 5517 | assoc_data->timeout_started = true; |
c65dd147 EG |
5518 | assoc_data->need_beacon = true; |
5519 | } else if (beacon_ies) { | |
78ac51f8 | 5520 | const u8 *ie; |
ef429dad JB |
5521 | u8 dtim_count = 0; |
5522 | ||
78ac51f8 SS |
5523 | ieee80211_get_dtim(beacon_ies, &dtim_count, |
5524 | &ifmgd->dtim_period); | |
5525 | ||
989c6505 | 5526 | ifmgd->have_beacon = true; |
66e67e41 | 5527 | assoc_data->timeout = jiffies; |
89afe614 | 5528 | assoc_data->timeout_started = true; |
ef429dad | 5529 | |
30686bf7 | 5530 | if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) { |
ef429dad JB |
5531 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; |
5532 | sdata->vif.bss_conf.sync_device_ts = | |
5533 | bss->device_ts_beacon; | |
5534 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
5535 | } | |
78ac51f8 SS |
5536 | |
5537 | ie = cfg80211_find_ext_ie(WLAN_EID_EXT_MULTIPLE_BSSID_CONFIGURATION, | |
5538 | beacon_ies->data, beacon_ies->len); | |
5539 | if (ie && ie[1] >= 3) | |
5540 | sdata->vif.bss_conf.profile_periodicity = ie[4]; | |
5541 | ||
5542 | ie = cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, | |
5543 | beacon_ies->data, beacon_ies->len); | |
5544 | if (ie && ie[1] >= 11 && | |
5545 | (ie[10] & WLAN_EXT_CAPA11_EMA_SUPPORT)) | |
5546 | sdata->vif.bss_conf.ema_ap = true; | |
c65dd147 EG |
5547 | } else { |
5548 | assoc_data->timeout = jiffies; | |
89afe614 | 5549 | assoc_data->timeout_started = true; |
66e67e41 | 5550 | } |
c65dd147 EG |
5551 | rcu_read_unlock(); |
5552 | ||
8d61ffa5 | 5553 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 5554 | |
fcff4f10 PS |
5555 | if (bss->corrupt_data) { |
5556 | char *corrupt_type = "data"; | |
5557 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
5558 | if (bss->corrupt_data & | |
5559 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
5560 | corrupt_type = "beacon and probe response"; | |
5561 | else | |
5562 | corrupt_type = "beacon"; | |
5563 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
5564 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
5565 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
5566 | corrupt_type); | |
fcff4f10 PS |
5567 | } |
5568 | ||
8d61ffa5 | 5569 | return 0; |
66e67e41 | 5570 | err_clear: |
c84a67a2 | 5571 | eth_zero_addr(ifmgd->bssid); |
3d2abdfd | 5572 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); |
66e67e41 JB |
5573 | ifmgd->assoc_data = NULL; |
5574 | err_free: | |
5575 | kfree(assoc_data); | |
66e67e41 | 5576 | return err; |
f0706e82 JB |
5577 | } |
5578 | ||
77fdaa12 | 5579 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 5580 | struct cfg80211_deauth_request *req) |
f0706e82 | 5581 | { |
46900298 | 5582 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 5583 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 5584 | bool tx = !req->local_state_change; |
f0706e82 | 5585 | |
c9c3a060 JB |
5586 | if (ifmgd->auth_data && |
5587 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
5588 | sdata_info(sdata, | |
5589 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
5590 | req->bssid, req->reason_code, | |
5591 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 5592 | |
d4e36e55 | 5593 | drv_mgd_prepare_tx(sdata->local, sdata, 0); |
4b08d1b6 | 5594 | ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid, |
37ad3888 | 5595 | IEEE80211_STYPE_DEAUTH, |
6863255b | 5596 | req->reason_code, tx, |
37ad3888 | 5597 | frame_buf); |
86552017 | 5598 | ieee80211_destroy_auth_data(sdata, false); |
a90faa9d EG |
5599 | ieee80211_report_disconnect(sdata, frame_buf, |
5600 | sizeof(frame_buf), true, | |
5601 | req->reason_code); | |
86552017 | 5602 | |
c9c3a060 | 5603 | return 0; |
8c7d857c EG |
5604 | } |
5605 | ||
a64cba3c AO |
5606 | if (ifmgd->assoc_data && |
5607 | ether_addr_equal(ifmgd->assoc_data->bss->bssid, req->bssid)) { | |
5608 | sdata_info(sdata, | |
5609 | "aborting association with %pM by local choice (Reason: %u=%s)\n", | |
5610 | req->bssid, req->reason_code, | |
5611 | ieee80211_get_reason_code_string(req->reason_code)); | |
5612 | ||
d4e36e55 | 5613 | drv_mgd_prepare_tx(sdata->local, sdata, 0); |
4b08d1b6 | 5614 | ieee80211_send_deauth_disassoc(sdata, req->bssid, req->bssid, |
a64cba3c AO |
5615 | IEEE80211_STYPE_DEAUTH, |
5616 | req->reason_code, tx, | |
5617 | frame_buf); | |
e6f462df | 5618 | ieee80211_destroy_assoc_data(sdata, false, true); |
a64cba3c AO |
5619 | ieee80211_report_disconnect(sdata, frame_buf, |
5620 | sizeof(frame_buf), true, | |
5621 | req->reason_code); | |
5622 | return 0; | |
5623 | } | |
5624 | ||
86552017 JB |
5625 | if (ifmgd->associated && |
5626 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
5627 | sdata_info(sdata, |
5628 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
5629 | req->bssid, req->reason_code, | |
5630 | ieee80211_get_reason_code_string(req->reason_code)); | |
5631 | ||
86552017 JB |
5632 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
5633 | req->reason_code, tx, frame_buf); | |
a90faa9d EG |
5634 | ieee80211_report_disconnect(sdata, frame_buf, |
5635 | sizeof(frame_buf), true, | |
5636 | req->reason_code); | |
c9c3a060 JB |
5637 | return 0; |
5638 | } | |
86552017 | 5639 | |
c9c3a060 | 5640 | return -ENOTCONN; |
f0706e82 | 5641 | } |
84363e6e | 5642 | |
77fdaa12 | 5643 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 5644 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 5645 | { |
77fdaa12 | 5646 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 5647 | u8 bssid[ETH_ALEN]; |
6ae16775 | 5648 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 5649 | |
8d8b261a JB |
5650 | /* |
5651 | * cfg80211 should catch this ... but it's racy since | |
5652 | * we can receive a disassoc frame, process it, hand it | |
5653 | * to cfg80211 while that's in a locked section already | |
5654 | * trying to tell us that the user wants to disconnect. | |
5655 | */ | |
8d61ffa5 | 5656 | if (ifmgd->associated != req->bss) |
77fdaa12 | 5657 | return -ENOLINK; |
77fdaa12 | 5658 | |
bdcbd8e0 | 5659 | sdata_info(sdata, |
dfa1ad29 CO |
5660 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
5661 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 5662 | |
e69e95db | 5663 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
5664 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
5665 | req->reason_code, !req->local_state_change, | |
5666 | frame_buf); | |
10f644a4 | 5667 | |
a90faa9d EG |
5668 | ieee80211_report_disconnect(sdata, frame_buf, sizeof(frame_buf), true, |
5669 | req->reason_code); | |
bc83b681 | 5670 | |
10f644a4 JB |
5671 | return 0; |
5672 | } | |
026331c4 | 5673 | |
afa762f6 | 5674 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
5675 | { |
5676 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5677 | ||
49921859 BG |
5678 | /* |
5679 | * Make sure some work items will not run after this, | |
5680 | * they will not do anything but might not have been | |
5681 | * cancelled when disconnecting. | |
5682 | */ | |
5683 | cancel_work_sync(&ifmgd->monitor_work); | |
5684 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
5685 | cancel_work_sync(&ifmgd->request_smps_work); | |
5686 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
5687 | cancel_work_sync(&ifmgd->chswitch_work); | |
81dd2b88 | 5688 | cancel_delayed_work_sync(&ifmgd->tdls_peer_del_work); |
49921859 | 5689 | |
8d61ffa5 | 5690 | sdata_lock(sdata); |
959867fa JB |
5691 | if (ifmgd->assoc_data) { |
5692 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
e6f462df | 5693 | ieee80211_destroy_assoc_data(sdata, false, false); |
959867fa JB |
5694 | cfg80211_assoc_timeout(sdata->dev, bss); |
5695 | } | |
54e4ffb2 JB |
5696 | if (ifmgd->auth_data) |
5697 | ieee80211_destroy_auth_data(sdata, false); | |
1277b4a9 LK |
5698 | spin_lock_bh(&ifmgd->teardown_lock); |
5699 | if (ifmgd->teardown_skb) { | |
5700 | kfree_skb(ifmgd->teardown_skb); | |
5701 | ifmgd->teardown_skb = NULL; | |
5702 | ifmgd->orig_teardown_skb = NULL; | |
5703 | } | |
4d9ec73d JM |
5704 | kfree(ifmgd->assoc_req_ies); |
5705 | ifmgd->assoc_req_ies = NULL; | |
5706 | ifmgd->assoc_req_ies_len = 0; | |
1277b4a9 | 5707 | spin_unlock_bh(&ifmgd->teardown_lock); |
54e4ffb2 | 5708 | del_timer_sync(&ifmgd->timer); |
8d61ffa5 | 5709 | sdata_unlock(sdata); |
54e4ffb2 JB |
5710 | } |
5711 | ||
a97c13c3 JO |
5712 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
5713 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
769f07d8 | 5714 | s32 rssi_level, |
a97c13c3 JO |
5715 | gfp_t gfp) |
5716 | { | |
5717 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5718 | ||
769f07d8 | 5719 | trace_api_cqm_rssi_notify(sdata, rssi_event, rssi_level); |
b5878a2d | 5720 | |
bee427b8 | 5721 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, rssi_level, gfp); |
a97c13c3 JO |
5722 | } |
5723 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); | |
98f03342 JB |
5724 | |
5725 | void ieee80211_cqm_beacon_loss_notify(struct ieee80211_vif *vif, gfp_t gfp) | |
5726 | { | |
5727 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
5728 | ||
5729 | trace_api_cqm_beacon_loss_notify(sdata->local, sdata); | |
5730 | ||
5731 | cfg80211_cqm_beacon_loss_notify(sdata->dev, gfp); | |
5732 | } | |
5733 | EXPORT_SYMBOL(ieee80211_cqm_beacon_loss_notify); |