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Commit | Line | Data |
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f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
5394af4d | 3 | * Copyright 2003-2008, Jouni Malinen <j@w1.fi> |
f0706e82 JB |
4 | * Copyright 2004, Instant802 Networks, Inc. |
5 | * Copyright 2005, Devicescape Software, Inc. | |
6 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
7 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
5b323edb | 14 | #include <linux/delay.h> |
f0706e82 JB |
15 | #include <linux/if_ether.h> |
16 | #include <linux/skbuff.h> | |
f0706e82 | 17 | #include <linux/if_arp.h> |
f0706e82 | 18 | #include <linux/etherdevice.h> |
d9b93842 | 19 | #include <linux/moduleparam.h> |
d0709a65 | 20 | #include <linux/rtnetlink.h> |
e8db0be1 | 21 | #include <linux/pm_qos.h> |
d91f36db | 22 | #include <linux/crc32.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
bc3b2d7f | 24 | #include <linux/export.h> |
f0706e82 | 25 | #include <net/mac80211.h> |
472dbc45 | 26 | #include <asm/unaligned.h> |
60f8b39c | 27 | |
f0706e82 | 28 | #include "ieee80211_i.h" |
24487981 | 29 | #include "driver-ops.h" |
2c8dccc7 JB |
30 | #include "rate.h" |
31 | #include "led.h" | |
f0706e82 | 32 | |
1672c0e3 | 33 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
cb236d2d | 34 | #define IEEE80211_AUTH_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
35 | #define IEEE80211_AUTH_TIMEOUT_SHORT (HZ / 10) |
36 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
37 | #define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5) | |
38 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
cb236d2d | 39 | #define IEEE80211_ASSOC_TIMEOUT_LONG (HZ / 2) |
1672c0e3 JB |
40 | #define IEEE80211_ASSOC_TIMEOUT_SHORT (HZ / 10) |
41 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
66e67e41 | 42 | |
180205bd BG |
43 | static int max_nullfunc_tries = 2; |
44 | module_param(max_nullfunc_tries, int, 0644); | |
45 | MODULE_PARM_DESC(max_nullfunc_tries, | |
46 | "Maximum nullfunc tx tries before disconnecting (reason 4)."); | |
47 | ||
48 | static int max_probe_tries = 5; | |
49 | module_param(max_probe_tries, int, 0644); | |
50 | MODULE_PARM_DESC(max_probe_tries, | |
51 | "Maximum probe tries before disconnecting (reason 4)."); | |
b291ba11 JB |
52 | |
53 | /* | |
7ccc8bd7 FF |
54 | * Beacon loss timeout is calculated as N frames times the |
55 | * advertised beacon interval. This may need to be somewhat | |
56 | * higher than what hardware might detect to account for | |
57 | * delays in the host processing frames. But since we also | |
58 | * probe on beacon miss before declaring the connection lost | |
59 | * default to what we want. | |
b291ba11 | 60 | */ |
59c1ec2b BG |
61 | static int beacon_loss_count = 7; |
62 | module_param(beacon_loss_count, int, 0644); | |
63 | MODULE_PARM_DESC(beacon_loss_count, | |
64 | "Number of beacon intervals before we decide beacon was lost."); | |
7ccc8bd7 | 65 | |
b291ba11 JB |
66 | /* |
67 | * Time the connection can be idle before we probe | |
68 | * it to see if we can still talk to the AP. | |
69 | */ | |
d1c5091f | 70 | #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) |
b291ba11 JB |
71 | /* |
72 | * Time we wait for a probe response after sending | |
73 | * a probe request because of beacon loss or for | |
74 | * checking the connection still works. | |
75 | */ | |
180205bd BG |
76 | static int probe_wait_ms = 500; |
77 | module_param(probe_wait_ms, int, 0644); | |
78 | MODULE_PARM_DESC(probe_wait_ms, | |
79 | "Maximum time(ms) to wait for probe response" | |
80 | " before disconnecting (reason 4)."); | |
f0706e82 | 81 | |
17e4ec14 JM |
82 | /* |
83 | * Weight given to the latest Beacon frame when calculating average signal | |
84 | * strength for Beacon frames received in the current BSS. This must be | |
85 | * between 1 and 15. | |
86 | */ | |
87 | #define IEEE80211_SIGNAL_AVE_WEIGHT 3 | |
88 | ||
391a200a JM |
89 | /* |
90 | * How many Beacon frames need to have been used in average signal strength | |
91 | * before starting to indicate signal change events. | |
92 | */ | |
93 | #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 | |
94 | ||
ca386f31 JB |
95 | /* |
96 | * We can have multiple work items (and connection probing) | |
97 | * scheduling this timer, but we need to take care to only | |
98 | * reschedule it when it should fire _earlier_ than it was | |
99 | * asked for before, or if it's not pending right now. This | |
100 | * function ensures that. Note that it then is required to | |
101 | * run this function for all timeouts after the first one | |
102 | * has happened -- the work that runs from this timer will | |
103 | * do that. | |
104 | */ | |
8d61ffa5 JB |
105 | static void run_again(struct ieee80211_sub_if_data *sdata, |
106 | unsigned long timeout) | |
ca386f31 | 107 | { |
8d61ffa5 | 108 | sdata_assert_lock(sdata); |
ca386f31 | 109 | |
8d61ffa5 JB |
110 | if (!timer_pending(&sdata->u.mgd.timer) || |
111 | time_before(timeout, sdata->u.mgd.timer.expires)) | |
112 | mod_timer(&sdata->u.mgd.timer, timeout); | |
ca386f31 JB |
113 | } |
114 | ||
d3a910a8 | 115 | void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) |
b291ba11 | 116 | { |
c1288b12 | 117 | if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) |
b291ba11 JB |
118 | return; |
119 | ||
7eeff74c JB |
120 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
121 | return; | |
122 | ||
b291ba11 | 123 | mod_timer(&sdata->u.mgd.bcn_mon_timer, |
7ccc8bd7 | 124 | round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); |
b291ba11 JB |
125 | } |
126 | ||
be099e82 LR |
127 | void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) |
128 | { | |
0c699c3a LR |
129 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
130 | ||
8628172f SG |
131 | if (unlikely(!sdata->u.mgd.associated)) |
132 | return; | |
133 | ||
448cd2e2 EP |
134 | ifmgd->probe_send_count = 0; |
135 | ||
be099e82 LR |
136 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) |
137 | return; | |
138 | ||
139 | mod_timer(&sdata->u.mgd.conn_mon_timer, | |
140 | round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); | |
141 | } | |
142 | ||
5484e237 | 143 | static int ecw2cw(int ecw) |
60f8b39c | 144 | { |
5484e237 | 145 | return (1 << ecw) - 1; |
60f8b39c JB |
146 | } |
147 | ||
6565ec9b JB |
148 | static u32 |
149 | ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, | |
150 | struct ieee80211_supported_band *sband, | |
151 | struct ieee80211_channel *channel, | |
152 | const struct ieee80211_ht_operation *ht_oper, | |
153 | const struct ieee80211_vht_operation *vht_oper, | |
5cdaed1e | 154 | struct cfg80211_chan_def *chandef, bool tracking) |
6565ec9b | 155 | { |
5cdaed1e | 156 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6565ec9b JB |
157 | struct cfg80211_chan_def vht_chandef; |
158 | u32 ht_cfreq, ret; | |
159 | ||
160 | chandef->chan = channel; | |
161 | chandef->width = NL80211_CHAN_WIDTH_20_NOHT; | |
162 | chandef->center_freq1 = channel->center_freq; | |
163 | chandef->center_freq2 = 0; | |
164 | ||
165 | if (!ht_oper || !sband->ht_cap.ht_supported) { | |
166 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; | |
167 | goto out; | |
168 | } | |
169 | ||
170 | chandef->width = NL80211_CHAN_WIDTH_20; | |
171 | ||
172 | ht_cfreq = ieee80211_channel_to_frequency(ht_oper->primary_chan, | |
173 | channel->band); | |
174 | /* check that channel matches the right operating channel */ | |
5cdaed1e | 175 | if (!tracking && channel->center_freq != ht_cfreq) { |
6565ec9b JB |
176 | /* |
177 | * It's possible that some APs are confused here; | |
178 | * Netgear WNDR3700 sometimes reports 4 higher than | |
179 | * the actual channel in association responses, but | |
180 | * since we look at probe response/beacon data here | |
181 | * it should be OK. | |
182 | */ | |
5cdaed1e JB |
183 | sdata_info(sdata, |
184 | "Wrong control channel: center-freq: %d ht-cfreq: %d ht->primary_chan: %d band: %d - Disabling HT\n", | |
185 | channel->center_freq, ht_cfreq, | |
186 | ht_oper->primary_chan, channel->band); | |
6565ec9b JB |
187 | ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT; |
188 | goto out; | |
189 | } | |
190 | ||
191 | /* check 40 MHz support, if we have it */ | |
192 | if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { | |
193 | switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
194 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
195 | chandef->width = NL80211_CHAN_WIDTH_40; | |
196 | chandef->center_freq1 += 10; | |
197 | break; | |
198 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
199 | chandef->width = NL80211_CHAN_WIDTH_40; | |
200 | chandef->center_freq1 -= 10; | |
201 | break; | |
202 | } | |
203 | } else { | |
204 | /* 40 MHz (and 80 MHz) must be supported for VHT */ | |
205 | ret = IEEE80211_STA_DISABLE_VHT; | |
85220d71 JB |
206 | /* also mark 40 MHz disabled */ |
207 | ret |= IEEE80211_STA_DISABLE_40MHZ; | |
6565ec9b JB |
208 | goto out; |
209 | } | |
210 | ||
211 | if (!vht_oper || !sband->vht_cap.vht_supported) { | |
212 | ret = IEEE80211_STA_DISABLE_VHT; | |
213 | goto out; | |
214 | } | |
215 | ||
216 | vht_chandef.chan = channel; | |
217 | vht_chandef.center_freq1 = | |
218 | ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx, | |
219 | channel->band); | |
220 | vht_chandef.center_freq2 = 0; | |
221 | ||
6565ec9b JB |
222 | switch (vht_oper->chan_width) { |
223 | case IEEE80211_VHT_CHANWIDTH_USE_HT: | |
224 | vht_chandef.width = chandef->width; | |
cb664981 | 225 | vht_chandef.center_freq1 = chandef->center_freq1; |
6565ec9b JB |
226 | break; |
227 | case IEEE80211_VHT_CHANWIDTH_80MHZ: | |
228 | vht_chandef.width = NL80211_CHAN_WIDTH_80; | |
229 | break; | |
230 | case IEEE80211_VHT_CHANWIDTH_160MHZ: | |
231 | vht_chandef.width = NL80211_CHAN_WIDTH_160; | |
232 | break; | |
233 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: | |
234 | vht_chandef.width = NL80211_CHAN_WIDTH_80P80; | |
6553bf04 JB |
235 | vht_chandef.center_freq2 = |
236 | ieee80211_channel_to_frequency( | |
237 | vht_oper->center_freq_seg2_idx, | |
238 | channel->band); | |
6565ec9b JB |
239 | break; |
240 | default: | |
5cdaed1e | 241 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
242 | sdata_info(sdata, |
243 | "AP VHT operation IE has invalid channel width (%d), disable VHT\n", | |
244 | vht_oper->chan_width); | |
6565ec9b JB |
245 | ret = IEEE80211_STA_DISABLE_VHT; |
246 | goto out; | |
247 | } | |
248 | ||
249 | if (!cfg80211_chandef_valid(&vht_chandef)) { | |
5cdaed1e | 250 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
251 | sdata_info(sdata, |
252 | "AP VHT information is invalid, disable VHT\n"); | |
6565ec9b JB |
253 | ret = IEEE80211_STA_DISABLE_VHT; |
254 | goto out; | |
255 | } | |
256 | ||
257 | if (cfg80211_chandef_identical(chandef, &vht_chandef)) { | |
258 | ret = 0; | |
259 | goto out; | |
260 | } | |
261 | ||
262 | if (!cfg80211_chandef_compatible(chandef, &vht_chandef)) { | |
5cdaed1e | 263 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
30eb1dc2 JB |
264 | sdata_info(sdata, |
265 | "AP VHT information doesn't match HT, disable VHT\n"); | |
6565ec9b JB |
266 | ret = IEEE80211_STA_DISABLE_VHT; |
267 | goto out; | |
268 | } | |
269 | ||
270 | *chandef = vht_chandef; | |
271 | ||
272 | ret = 0; | |
273 | ||
274 | out: | |
963a1852 JB |
275 | /* |
276 | * When tracking the current AP, don't do any further checks if the | |
277 | * new chandef is identical to the one we're currently using for the | |
278 | * connection. This keeps us from playing ping-pong with regulatory, | |
279 | * without it the following can happen (for example): | |
280 | * - connect to an AP with 80 MHz, world regdom allows 80 MHz | |
281 | * - AP advertises regdom US | |
282 | * - CRDA loads regdom US with 80 MHz prohibited (old database) | |
283 | * - the code below detects an unsupported channel, downgrades, and | |
284 | * we disconnect from the AP in the caller | |
285 | * - disconnect causes CRDA to reload world regdomain and the game | |
286 | * starts anew. | |
287 | * (see https://bugzilla.kernel.org/show_bug.cgi?id=70881) | |
288 | * | |
289 | * It seems possible that there are still scenarios with CSA or real | |
290 | * bandwidth changes where a this could happen, but those cases are | |
291 | * less common and wouldn't completely prevent using the AP. | |
292 | */ | |
293 | if (tracking && | |
294 | cfg80211_chandef_identical(chandef, &sdata->vif.bss_conf.chandef)) | |
295 | return ret; | |
296 | ||
586e01ed JB |
297 | /* don't print the message below for VHT mismatch if VHT is disabled */ |
298 | if (ret & IEEE80211_STA_DISABLE_VHT) | |
299 | vht_chandef = *chandef; | |
300 | ||
ddfe49b4 JB |
301 | /* |
302 | * Ignore the DISABLED flag when we're already connected and only | |
303 | * tracking the APs beacon for bandwidth changes - otherwise we | |
304 | * might get disconnected here if we connect to an AP, update our | |
305 | * regulatory information based on the AP's country IE and the | |
306 | * information we have is wrong/outdated and disables the channel | |
307 | * that we're actually using for the connection to the AP. | |
308 | */ | |
6565ec9b | 309 | while (!cfg80211_chandef_usable(sdata->local->hw.wiphy, chandef, |
ddfe49b4 JB |
310 | tracking ? 0 : |
311 | IEEE80211_CHAN_DISABLED)) { | |
6565ec9b JB |
312 | if (WARN_ON(chandef->width == NL80211_CHAN_WIDTH_20_NOHT)) { |
313 | ret = IEEE80211_STA_DISABLE_HT | | |
314 | IEEE80211_STA_DISABLE_VHT; | |
b56e4b85 | 315 | break; |
6565ec9b JB |
316 | } |
317 | ||
e6b7cde4 | 318 | ret |= ieee80211_chandef_downgrade(chandef); |
6565ec9b JB |
319 | } |
320 | ||
5cdaed1e | 321 | if (chandef->width != vht_chandef.width && !tracking) |
6565ec9b JB |
322 | sdata_info(sdata, |
323 | "capabilities/regulatory prevented using AP HT/VHT configuration, downgraded\n"); | |
324 | ||
325 | WARN_ON_ONCE(!cfg80211_chandef_valid(chandef)); | |
326 | return ret; | |
327 | } | |
328 | ||
30eb1dc2 JB |
329 | static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata, |
330 | struct sta_info *sta, | |
331 | const struct ieee80211_ht_operation *ht_oper, | |
332 | const struct ieee80211_vht_operation *vht_oper, | |
333 | const u8 *bssid, u32 *changed) | |
d5522e03 JB |
334 | { |
335 | struct ieee80211_local *local = sdata->local; | |
30eb1dc2 | 336 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
d5522e03 | 337 | struct ieee80211_supported_band *sband; |
55de908a | 338 | struct ieee80211_channel *chan; |
30eb1dc2 | 339 | struct cfg80211_chan_def chandef; |
9ed6bcce | 340 | u16 ht_opmode; |
30eb1dc2 JB |
341 | u32 flags; |
342 | enum ieee80211_sta_rx_bandwidth new_sta_bw; | |
343 | int ret; | |
d5522e03 | 344 | |
30eb1dc2 JB |
345 | /* if HT was/is disabled, don't track any bandwidth changes */ |
346 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT || !ht_oper) | |
1128958d JB |
347 | return 0; |
348 | ||
30eb1dc2 JB |
349 | /* don't check VHT if we associated as non-VHT station */ |
350 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
351 | vht_oper = NULL; | |
352 | ||
353 | if (WARN_ON_ONCE(!sta)) | |
354 | return -EINVAL; | |
355 | ||
017b45bb AA |
356 | /* |
357 | * if bss configuration changed store the new one - | |
358 | * this may be applicable even if channel is identical | |
359 | */ | |
360 | ht_opmode = le16_to_cpu(ht_oper->operation_mode); | |
361 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
362 | *changed |= BSS_CHANGED_HT; | |
363 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
364 | } | |
365 | ||
f2d9330e | 366 | chan = sdata->vif.bss_conf.chandef.chan; |
55de908a | 367 | sband = local->hw.wiphy->bands[chan->band]; |
d5522e03 | 368 | |
30eb1dc2 JB |
369 | /* calculate new channel (type) based on HT/VHT operation IEs */ |
370 | flags = ieee80211_determine_chantype(sdata, sband, chan, ht_oper, | |
5cdaed1e | 371 | vht_oper, &chandef, true); |
30eb1dc2 JB |
372 | |
373 | /* | |
374 | * Downgrade the new channel if we associated with restricted | |
375 | * capabilities. For example, if we associated as a 20 MHz STA | |
376 | * to a 40 MHz AP (due to regulatory, capabilities or config | |
377 | * reasons) then switching to a 40 MHz channel now won't do us | |
378 | * any good -- we couldn't use it with the AP. | |
379 | */ | |
380 | if (ifmgd->flags & IEEE80211_STA_DISABLE_80P80MHZ && | |
381 | chandef.width == NL80211_CHAN_WIDTH_80P80) | |
e6b7cde4 | 382 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
383 | if (ifmgd->flags & IEEE80211_STA_DISABLE_160MHZ && |
384 | chandef.width == NL80211_CHAN_WIDTH_160) | |
e6b7cde4 | 385 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
386 | if (ifmgd->flags & IEEE80211_STA_DISABLE_40MHZ && |
387 | chandef.width > NL80211_CHAN_WIDTH_20) | |
e6b7cde4 | 388 | flags |= ieee80211_chandef_downgrade(&chandef); |
30eb1dc2 JB |
389 | |
390 | if (cfg80211_chandef_identical(&chandef, &sdata->vif.bss_conf.chandef)) | |
391 | return 0; | |
392 | ||
393 | sdata_info(sdata, | |
394 | "AP %pM changed bandwidth, new config is %d MHz, width %d (%d/%d MHz)\n", | |
395 | ifmgd->bssid, chandef.chan->center_freq, chandef.width, | |
396 | chandef.center_freq1, chandef.center_freq2); | |
397 | ||
398 | if (flags != (ifmgd->flags & (IEEE80211_STA_DISABLE_HT | | |
399 | IEEE80211_STA_DISABLE_VHT | | |
400 | IEEE80211_STA_DISABLE_40MHZ | | |
401 | IEEE80211_STA_DISABLE_80P80MHZ | | |
402 | IEEE80211_STA_DISABLE_160MHZ)) || | |
403 | !cfg80211_chandef_valid(&chandef)) { | |
404 | sdata_info(sdata, | |
405 | "AP %pM changed bandwidth in a way we can't support - disconnect\n", | |
406 | ifmgd->bssid); | |
407 | return -EINVAL; | |
408 | } | |
409 | ||
410 | switch (chandef.width) { | |
411 | case NL80211_CHAN_WIDTH_20_NOHT: | |
412 | case NL80211_CHAN_WIDTH_20: | |
413 | new_sta_bw = IEEE80211_STA_RX_BW_20; | |
414 | break; | |
4bf88530 | 415 | case NL80211_CHAN_WIDTH_40: |
30eb1dc2 | 416 | new_sta_bw = IEEE80211_STA_RX_BW_40; |
64f68e5d | 417 | break; |
30eb1dc2 JB |
418 | case NL80211_CHAN_WIDTH_80: |
419 | new_sta_bw = IEEE80211_STA_RX_BW_80; | |
420 | break; | |
421 | case NL80211_CHAN_WIDTH_80P80: | |
422 | case NL80211_CHAN_WIDTH_160: | |
423 | new_sta_bw = IEEE80211_STA_RX_BW_160; | |
64f68e5d | 424 | break; |
30eb1dc2 JB |
425 | default: |
426 | return -EINVAL; | |
64f68e5d | 427 | } |
d5522e03 | 428 | |
30eb1dc2 JB |
429 | if (new_sta_bw > sta->cur_max_bandwidth) |
430 | new_sta_bw = sta->cur_max_bandwidth; | |
64f68e5d | 431 | |
30eb1dc2 JB |
432 | if (new_sta_bw < sta->sta.bandwidth) { |
433 | sta->sta.bandwidth = new_sta_bw; | |
434 | rate_control_rate_update(local, sband, sta, | |
435 | IEEE80211_RC_BW_CHANGED); | |
436 | } | |
64f68e5d | 437 | |
30eb1dc2 JB |
438 | ret = ieee80211_vif_change_bandwidth(sdata, &chandef, changed); |
439 | if (ret) { | |
440 | sdata_info(sdata, | |
441 | "AP %pM changed bandwidth to incompatible one - disconnect\n", | |
442 | ifmgd->bssid); | |
443 | return ret; | |
444 | } | |
7cc44ed4 | 445 | |
30eb1dc2 JB |
446 | if (new_sta_bw > sta->sta.bandwidth) { |
447 | sta->sta.bandwidth = new_sta_bw; | |
448 | rate_control_rate_update(local, sband, sta, | |
449 | IEEE80211_RC_BW_CHANGED); | |
0aaffa9b | 450 | } |
d5522e03 | 451 | |
30eb1dc2 | 452 | return 0; |
d5522e03 JB |
453 | } |
454 | ||
9c6bd790 JB |
455 | /* frame sending functions */ |
456 | ||
66e67e41 | 457 | static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata, |
9dde6423 | 458 | struct sk_buff *skb, u8 ap_ht_param, |
66e67e41 JB |
459 | struct ieee80211_supported_band *sband, |
460 | struct ieee80211_channel *channel, | |
461 | enum ieee80211_smps_mode smps) | |
462 | { | |
66e67e41 JB |
463 | u8 *pos; |
464 | u32 flags = channel->flags; | |
465 | u16 cap; | |
466 | struct ieee80211_sta_ht_cap ht_cap; | |
467 | ||
468 | BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap)); | |
469 | ||
66e67e41 JB |
470 | memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap)); |
471 | ieee80211_apply_htcap_overrides(sdata, &ht_cap); | |
472 | ||
66e67e41 JB |
473 | /* determine capability flags */ |
474 | cap = ht_cap.cap; | |
475 | ||
9dde6423 | 476 | switch (ap_ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
66e67e41 JB |
477 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: |
478 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { | |
479 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
480 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
481 | } | |
482 | break; | |
483 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
484 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { | |
485 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
486 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
487 | } | |
488 | break; | |
489 | } | |
490 | ||
24398e39 JB |
491 | /* |
492 | * If 40 MHz was disabled associate as though we weren't | |
493 | * capable of 40 MHz -- some broken APs will never fall | |
494 | * back to trying to transmit in 20 MHz. | |
495 | */ | |
496 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_40MHZ) { | |
497 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
498 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
499 | } | |
500 | ||
66e67e41 JB |
501 | /* set SM PS mode properly */ |
502 | cap &= ~IEEE80211_HT_CAP_SM_PS; | |
503 | switch (smps) { | |
504 | case IEEE80211_SMPS_AUTOMATIC: | |
505 | case IEEE80211_SMPS_NUM_MODES: | |
506 | WARN_ON(1); | |
507 | case IEEE80211_SMPS_OFF: | |
508 | cap |= WLAN_HT_CAP_SM_PS_DISABLED << | |
509 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
510 | break; | |
511 | case IEEE80211_SMPS_STATIC: | |
512 | cap |= WLAN_HT_CAP_SM_PS_STATIC << | |
513 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
514 | break; | |
515 | case IEEE80211_SMPS_DYNAMIC: | |
516 | cap |= WLAN_HT_CAP_SM_PS_DYNAMIC << | |
517 | IEEE80211_HT_CAP_SM_PS_SHIFT; | |
518 | break; | |
519 | } | |
520 | ||
521 | /* reserve and fill IE */ | |
522 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); | |
523 | ieee80211_ie_build_ht_cap(pos, &ht_cap, cap); | |
524 | } | |
525 | ||
d545daba MP |
526 | static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, |
527 | struct sk_buff *skb, | |
b08fbbd8 JB |
528 | struct ieee80211_supported_band *sband, |
529 | struct ieee80211_vht_cap *ap_vht_cap) | |
d545daba MP |
530 | { |
531 | u8 *pos; | |
532 | u32 cap; | |
533 | struct ieee80211_sta_vht_cap vht_cap; | |
c1cf6d4e | 534 | u32 mask, ap_bf_sts, our_bf_sts; |
d545daba MP |
535 | |
536 | BUILD_BUG_ON(sizeof(vht_cap) != sizeof(sband->vht_cap)); | |
537 | ||
538 | memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap)); | |
dd5ecfea | 539 | ieee80211_apply_vhtcap_overrides(sdata, &vht_cap); |
d545daba MP |
540 | |
541 | /* determine capability flags */ | |
542 | cap = vht_cap.cap; | |
543 | ||
f2d9d270 JB |
544 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_80P80MHZ) { |
545 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; | |
546 | cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
547 | } | |
548 | ||
549 | if (sdata->u.mgd.flags & IEEE80211_STA_DISABLE_160MHZ) { | |
550 | cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160; | |
551 | cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; | |
552 | } | |
553 | ||
b08fbbd8 JB |
554 | /* |
555 | * Some APs apparently get confused if our capabilities are better | |
556 | * than theirs, so restrict what we advertise in the assoc request. | |
557 | */ | |
558 | if (!(ap_vht_cap->vht_cap_info & | |
559 | cpu_to_le32(IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE))) | |
560 | cap &= ~IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE; | |
561 | ||
c1cf6d4e ES |
562 | mask = IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK; |
563 | ||
564 | ap_bf_sts = le32_to_cpu(ap_vht_cap->vht_cap_info) & mask; | |
565 | our_bf_sts = cap & mask; | |
566 | ||
567 | if (ap_bf_sts < our_bf_sts) { | |
568 | cap &= ~mask; | |
569 | cap |= ap_bf_sts; | |
570 | } | |
571 | ||
d545daba | 572 | /* reserve and fill IE */ |
d4950281 | 573 | pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); |
d545daba MP |
574 | ieee80211_ie_build_vht_cap(pos, &vht_cap, cap); |
575 | } | |
576 | ||
66e67e41 JB |
577 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
578 | { | |
579 | struct ieee80211_local *local = sdata->local; | |
580 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
581 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
582 | struct sk_buff *skb; | |
583 | struct ieee80211_mgmt *mgmt; | |
584 | u8 *pos, qos_info; | |
585 | size_t offset = 0, noffset; | |
2103dec1 | 586 | int i, count, rates_len, supp_rates_len, shift; |
66e67e41 JB |
587 | u16 capab; |
588 | struct ieee80211_supported_band *sband; | |
55de908a JB |
589 | struct ieee80211_chanctx_conf *chanctx_conf; |
590 | struct ieee80211_channel *chan; | |
2103dec1 | 591 | u32 rate_flags, rates = 0; |
66e67e41 | 592 | |
8d61ffa5 | 593 | sdata_assert_lock(sdata); |
66e67e41 | 594 | |
55de908a JB |
595 | rcu_read_lock(); |
596 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
597 | if (WARN_ON(!chanctx_conf)) { | |
598 | rcu_read_unlock(); | |
599 | return; | |
600 | } | |
4bf88530 | 601 | chan = chanctx_conf->def.chan; |
2103dec1 | 602 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); |
55de908a JB |
603 | rcu_read_unlock(); |
604 | sband = local->hw.wiphy->bands[chan->band]; | |
2103dec1 | 605 | shift = ieee80211_vif_get_shift(&sdata->vif); |
66e67e41 JB |
606 | |
607 | if (assoc_data->supp_rates_len) { | |
608 | /* | |
609 | * Get all rates supported by the device and the AP as | |
610 | * some APs don't like getting a superset of their rates | |
611 | * in the association request (e.g. D-Link DAP 1353 in | |
612 | * b-only mode)... | |
613 | */ | |
2103dec1 SW |
614 | rates_len = ieee80211_parse_bitrates(&chanctx_conf->def, sband, |
615 | assoc_data->supp_rates, | |
616 | assoc_data->supp_rates_len, | |
617 | &rates); | |
66e67e41 JB |
618 | } else { |
619 | /* | |
620 | * In case AP not provide any supported rates information | |
621 | * before association, we send information element(s) with | |
622 | * all rates that we support. | |
623 | */ | |
2103dec1 SW |
624 | rates_len = 0; |
625 | for (i = 0; i < sband->n_bitrates; i++) { | |
626 | if ((rate_flags & sband->bitrates[i].flags) | |
627 | != rate_flags) | |
628 | continue; | |
629 | rates |= BIT(i); | |
630 | rates_len++; | |
631 | } | |
66e67e41 JB |
632 | } |
633 | ||
634 | skb = alloc_skb(local->hw.extra_tx_headroom + | |
635 | sizeof(*mgmt) + /* bit too much but doesn't matter */ | |
636 | 2 + assoc_data->ssid_len + /* SSID */ | |
637 | 4 + rates_len + /* (extended) rates */ | |
638 | 4 + /* power capability */ | |
639 | 2 + 2 * sband->n_channels + /* supported channels */ | |
640 | 2 + sizeof(struct ieee80211_ht_cap) + /* HT */ | |
d4950281 | 641 | 2 + sizeof(struct ieee80211_vht_cap) + /* VHT */ |
66e67e41 JB |
642 | assoc_data->ie_len + /* extra IEs */ |
643 | 9, /* WMM */ | |
644 | GFP_KERNEL); | |
645 | if (!skb) | |
646 | return; | |
647 | ||
648 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
649 | ||
650 | capab = WLAN_CAPABILITY_ESS; | |
651 | ||
652 | if (sband->band == IEEE80211_BAND_2GHZ) { | |
653 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
654 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
655 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
656 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
657 | } | |
658 | ||
659 | if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY) | |
660 | capab |= WLAN_CAPABILITY_PRIVACY; | |
661 | ||
662 | if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
663 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
664 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
665 | ||
666 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
667 | memset(mgmt, 0, 24); | |
668 | memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN); | |
669 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); | |
670 | memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN); | |
671 | ||
672 | if (!is_zero_ether_addr(assoc_data->prev_bssid)) { | |
673 | skb_put(skb, 10); | |
674 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
675 | IEEE80211_STYPE_REASSOC_REQ); | |
676 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
677 | mgmt->u.reassoc_req.listen_interval = | |
678 | cpu_to_le16(local->hw.conf.listen_interval); | |
679 | memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid, | |
680 | ETH_ALEN); | |
681 | } else { | |
682 | skb_put(skb, 4); | |
683 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
684 | IEEE80211_STYPE_ASSOC_REQ); | |
685 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
686 | mgmt->u.assoc_req.listen_interval = | |
687 | cpu_to_le16(local->hw.conf.listen_interval); | |
688 | } | |
689 | ||
690 | /* SSID */ | |
691 | pos = skb_put(skb, 2 + assoc_data->ssid_len); | |
692 | *pos++ = WLAN_EID_SSID; | |
693 | *pos++ = assoc_data->ssid_len; | |
694 | memcpy(pos, assoc_data->ssid, assoc_data->ssid_len); | |
695 | ||
696 | /* add all rates which were marked to be used above */ | |
697 | supp_rates_len = rates_len; | |
698 | if (supp_rates_len > 8) | |
699 | supp_rates_len = 8; | |
700 | ||
701 | pos = skb_put(skb, supp_rates_len + 2); | |
702 | *pos++ = WLAN_EID_SUPP_RATES; | |
703 | *pos++ = supp_rates_len; | |
704 | ||
705 | count = 0; | |
706 | for (i = 0; i < sband->n_bitrates; i++) { | |
707 | if (BIT(i) & rates) { | |
2103dec1 SW |
708 | int rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, |
709 | 5 * (1 << shift)); | |
710 | *pos++ = (u8) rate; | |
66e67e41 JB |
711 | if (++count == 8) |
712 | break; | |
713 | } | |
714 | } | |
715 | ||
716 | if (rates_len > count) { | |
717 | pos = skb_put(skb, rates_len - count + 2); | |
718 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
719 | *pos++ = rates_len - count; | |
720 | ||
721 | for (i++; i < sband->n_bitrates; i++) { | |
722 | if (BIT(i) & rates) { | |
2103dec1 SW |
723 | int rate; |
724 | rate = DIV_ROUND_UP(sband->bitrates[i].bitrate, | |
725 | 5 * (1 << shift)); | |
726 | *pos++ = (u8) rate; | |
66e67e41 JB |
727 | } |
728 | } | |
729 | } | |
730 | ||
731 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
732 | /* 1. power capabilities */ | |
733 | pos = skb_put(skb, 4); | |
734 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
735 | *pos++ = 2; | |
736 | *pos++ = 0; /* min tx power */ | |
0430c883 SW |
737 | /* max tx power */ |
738 | *pos++ = ieee80211_chandef_max_power(&chanctx_conf->def); | |
66e67e41 JB |
739 | |
740 | /* 2. supported channels */ | |
741 | /* TODO: get this in reg domain format */ | |
742 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
743 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
744 | *pos++ = 2 * sband->n_channels; | |
745 | for (i = 0; i < sband->n_channels; i++) { | |
746 | *pos++ = ieee80211_frequency_to_channel( | |
747 | sband->channels[i].center_freq); | |
748 | *pos++ = 1; /* one channel in the subband*/ | |
749 | } | |
750 | } | |
751 | ||
752 | /* if present, add any custom IEs that go before HT */ | |
b3f51e94 | 753 | if (assoc_data->ie_len) { |
66e67e41 JB |
754 | static const u8 before_ht[] = { |
755 | WLAN_EID_SSID, | |
756 | WLAN_EID_SUPP_RATES, | |
757 | WLAN_EID_EXT_SUPP_RATES, | |
758 | WLAN_EID_PWR_CAPABILITY, | |
759 | WLAN_EID_SUPPORTED_CHANNELS, | |
760 | WLAN_EID_RSN, | |
761 | WLAN_EID_QOS_CAPA, | |
762 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
763 | WLAN_EID_MOBILITY_DOMAIN, | |
764 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
765 | }; | |
766 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
767 | before_ht, ARRAY_SIZE(before_ht), | |
768 | offset); | |
769 | pos = skb_put(skb, noffset - offset); | |
770 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
771 | offset = noffset; | |
772 | } | |
773 | ||
f2d9d270 JB |
774 | if (WARN_ON_ONCE((ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
775 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))) | |
776 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
777 | ||
a8243b72 | 778 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
9dde6423 | 779 | ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, |
04ecd257 | 780 | sband, chan, sdata->smps_mode); |
66e67e41 | 781 | |
3de3802c JB |
782 | /* if present, add any custom IEs that go before VHT */ |
783 | if (assoc_data->ie_len) { | |
784 | static const u8 before_vht[] = { | |
785 | WLAN_EID_SSID, | |
786 | WLAN_EID_SUPP_RATES, | |
787 | WLAN_EID_EXT_SUPP_RATES, | |
788 | WLAN_EID_PWR_CAPABILITY, | |
789 | WLAN_EID_SUPPORTED_CHANNELS, | |
790 | WLAN_EID_RSN, | |
791 | WLAN_EID_QOS_CAPA, | |
792 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
793 | WLAN_EID_MOBILITY_DOMAIN, | |
794 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
795 | WLAN_EID_HT_CAPABILITY, | |
796 | WLAN_EID_BSS_COEX_2040, | |
797 | WLAN_EID_EXT_CAPABILITY, | |
798 | WLAN_EID_QOS_TRAFFIC_CAPA, | |
799 | WLAN_EID_TIM_BCAST_REQ, | |
800 | WLAN_EID_INTERWORKING, | |
801 | }; | |
802 | noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len, | |
803 | before_vht, ARRAY_SIZE(before_vht), | |
804 | offset); | |
805 | pos = skb_put(skb, noffset - offset); | |
806 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
807 | offset = noffset; | |
808 | } | |
809 | ||
d545daba | 810 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
b08fbbd8 JB |
811 | ieee80211_add_vht_ie(sdata, skb, sband, |
812 | &assoc_data->ap_vht_cap); | |
d545daba | 813 | |
66e67e41 | 814 | /* if present, add any custom non-vendor IEs that go after HT */ |
b3f51e94 | 815 | if (assoc_data->ie_len) { |
66e67e41 JB |
816 | noffset = ieee80211_ie_split_vendor(assoc_data->ie, |
817 | assoc_data->ie_len, | |
818 | offset); | |
819 | pos = skb_put(skb, noffset - offset); | |
820 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
821 | offset = noffset; | |
822 | } | |
823 | ||
76f0303d JB |
824 | if (assoc_data->wmm) { |
825 | if (assoc_data->uapsd) { | |
dc41e4d4 EP |
826 | qos_info = ifmgd->uapsd_queues; |
827 | qos_info |= (ifmgd->uapsd_max_sp_len << | |
66e67e41 JB |
828 | IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT); |
829 | } else { | |
830 | qos_info = 0; | |
831 | } | |
832 | ||
833 | pos = skb_put(skb, 9); | |
834 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
835 | *pos++ = 7; /* len */ | |
836 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
837 | *pos++ = 0x50; | |
838 | *pos++ = 0xf2; | |
839 | *pos++ = 2; /* WME */ | |
840 | *pos++ = 0; /* WME info */ | |
841 | *pos++ = 1; /* WME ver */ | |
842 | *pos++ = qos_info; | |
843 | } | |
844 | ||
845 | /* add any remaining custom (i.e. vendor specific here) IEs */ | |
b3f51e94 | 846 | if (assoc_data->ie_len) { |
66e67e41 JB |
847 | noffset = assoc_data->ie_len; |
848 | pos = skb_put(skb, noffset - offset); | |
849 | memcpy(pos, assoc_data->ie + offset, noffset - offset); | |
850 | } | |
851 | ||
a1845fc7 JB |
852 | drv_mgd_prepare_tx(local, sdata); |
853 | ||
66e67e41 | 854 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
1672c0e3 JB |
855 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
856 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | | |
857 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
66e67e41 JB |
858 | ieee80211_tx_skb(sdata, skb); |
859 | } | |
860 | ||
572e0012 KV |
861 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
862 | struct ieee80211_sub_if_data *sdata) | |
863 | { | |
572e0012 KV |
864 | struct ieee80211_pspoll *pspoll; |
865 | struct sk_buff *skb; | |
572e0012 | 866 | |
d8cd189e KV |
867 | skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); |
868 | if (!skb) | |
572e0012 | 869 | return; |
572e0012 | 870 | |
d8cd189e KV |
871 | pspoll = (struct ieee80211_pspoll *) skb->data; |
872 | pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
572e0012 | 873 | |
62ae67be JB |
874 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; |
875 | ieee80211_tx_skb(sdata, skb); | |
572e0012 KV |
876 | } |
877 | ||
965bedad JB |
878 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
879 | struct ieee80211_sub_if_data *sdata, | |
880 | int powersave) | |
881 | { | |
882 | struct sk_buff *skb; | |
d8cd189e | 883 | struct ieee80211_hdr_3addr *nullfunc; |
b6f35301 | 884 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
965bedad | 885 | |
d8cd189e KV |
886 | skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); |
887 | if (!skb) | |
965bedad | 888 | return; |
965bedad | 889 | |
d8cd189e | 890 | nullfunc = (struct ieee80211_hdr_3addr *) skb->data; |
965bedad | 891 | if (powersave) |
d8cd189e | 892 | nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); |
965bedad | 893 | |
6c17b77b SF |
894 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | |
895 | IEEE80211_TX_INTFL_OFFCHAN_TX_OK; | |
ff40b425 PF |
896 | |
897 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) | |
898 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
899 | ||
392b9ffb | 900 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b6f35301 RM |
901 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_USE_MINRATE; |
902 | ||
62ae67be | 903 | ieee80211_tx_skb(sdata, skb); |
965bedad JB |
904 | } |
905 | ||
d524215f FF |
906 | static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, |
907 | struct ieee80211_sub_if_data *sdata) | |
908 | { | |
909 | struct sk_buff *skb; | |
910 | struct ieee80211_hdr *nullfunc; | |
911 | __le16 fc; | |
912 | ||
913 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
914 | return; | |
915 | ||
916 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); | |
d15b8459 | 917 | if (!skb) |
d524215f | 918 | return; |
d15b8459 | 919 | |
d524215f FF |
920 | skb_reserve(skb, local->hw.extra_tx_headroom); |
921 | ||
922 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); | |
923 | memset(nullfunc, 0, 30); | |
924 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
925 | IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); | |
926 | nullfunc->frame_control = fc; | |
927 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
928 | memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); | |
929 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
930 | memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); | |
931 | ||
932 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; | |
933 | ieee80211_tx_skb(sdata, skb); | |
934 | } | |
935 | ||
cc32abd4 JB |
936 | /* spectrum management related things */ |
937 | static void ieee80211_chswitch_work(struct work_struct *work) | |
938 | { | |
939 | struct ieee80211_sub_if_data *sdata = | |
940 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
675a0b04 | 941 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 942 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
7578d575 AN |
943 | u32 changed = 0; |
944 | int ret; | |
cc32abd4 | 945 | |
9607e6b6 | 946 | if (!ieee80211_sdata_running(sdata)) |
cc32abd4 JB |
947 | return; |
948 | ||
8d61ffa5 | 949 | sdata_lock(sdata); |
77fdaa12 JB |
950 | if (!ifmgd->associated) |
951 | goto out; | |
cc32abd4 | 952 | |
34a3740d | 953 | mutex_lock(&local->mtx); |
33787fc4 | 954 | ret = ieee80211_vif_change_channel(sdata, &changed); |
34a3740d | 955 | mutex_unlock(&local->mtx); |
7578d575 AN |
956 | if (ret) { |
957 | sdata_info(sdata, | |
958 | "vif channel switch failed, disconnecting\n"); | |
959 | ieee80211_queue_work(&sdata->local->hw, | |
960 | &ifmgd->csa_connection_drop_work); | |
961 | goto out; | |
962 | } | |
675a0b04 | 963 | |
7578d575 | 964 | if (!local->use_chanctx) { |
33787fc4 | 965 | local->_oper_chandef = sdata->csa_chandef; |
7578d575 AN |
966 | /* Call "hw_config" only if doing sw channel switch. |
967 | * Otherwise update the channel directly | |
968 | */ | |
969 | if (!local->ops->channel_switch) | |
970 | ieee80211_hw_config(local, 0); | |
971 | else | |
972 | local->hw.conf.chandef = local->_oper_chandef; | |
5ce6e438 | 973 | } |
77fdaa12 | 974 | |
cc32abd4 | 975 | /* XXX: shouldn't really modify cfg80211-owned data! */ |
33787fc4 | 976 | ifmgd->associated->channel = sdata->csa_chandef.chan; |
cc32abd4 | 977 | |
57eebdf3 | 978 | /* XXX: wait for a beacon first? */ |
675a0b04 | 979 | ieee80211_wake_queues_by_reason(&local->hw, |
445ea4e8 | 980 | IEEE80211_MAX_QUEUE_MAP, |
cc32abd4 | 981 | IEEE80211_QUEUE_STOP_REASON_CSA); |
7578d575 AN |
982 | |
983 | ieee80211_bss_info_change_notify(sdata, changed); | |
984 | ||
77fdaa12 | 985 | out: |
7578d575 | 986 | sdata->vif.csa_active = false; |
77fdaa12 | 987 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
8d61ffa5 | 988 | sdata_unlock(sdata); |
cc32abd4 JB |
989 | } |
990 | ||
5ce6e438 JB |
991 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) |
992 | { | |
55de908a JB |
993 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
994 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
5ce6e438 JB |
995 | |
996 | trace_api_chswitch_done(sdata, success); | |
997 | if (!success) { | |
882a7c69 JB |
998 | sdata_info(sdata, |
999 | "driver channel switch failed, disconnecting\n"); | |
1000 | ieee80211_queue_work(&sdata->local->hw, | |
1001 | &ifmgd->csa_connection_drop_work); | |
1002 | } else { | |
1003 | ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); | |
5ce6e438 | 1004 | } |
5ce6e438 JB |
1005 | } |
1006 | EXPORT_SYMBOL(ieee80211_chswitch_done); | |
1007 | ||
cc32abd4 JB |
1008 | static void ieee80211_chswitch_timer(unsigned long data) |
1009 | { | |
1010 | struct ieee80211_sub_if_data *sdata = | |
1011 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 1012 | |
9b7d72c1 | 1013 | ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.chswitch_work); |
cc32abd4 JB |
1014 | } |
1015 | ||
37799e52 | 1016 | static void |
4a3cb702 | 1017 | ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, |
04a161f4 JB |
1018 | u64 timestamp, struct ieee802_11_elems *elems, |
1019 | bool beacon) | |
cc32abd4 | 1020 | { |
b4f286a1 | 1021 | struct ieee80211_local *local = sdata->local; |
cc32abd4 | 1022 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
37799e52 | 1023 | struct cfg80211_bss *cbss = ifmgd->associated; |
55de908a | 1024 | struct ieee80211_chanctx *chanctx; |
e6b7cde4 | 1025 | enum ieee80211_band current_band; |
c0f17eb9 | 1026 | struct ieee80211_csa_ie csa_ie; |
e6b7cde4 | 1027 | int res; |
cc32abd4 | 1028 | |
8d61ffa5 | 1029 | sdata_assert_lock(sdata); |
77fdaa12 | 1030 | |
37799e52 | 1031 | if (!cbss) |
cc32abd4 JB |
1032 | return; |
1033 | ||
b4f286a1 | 1034 | if (local->scanning) |
cc32abd4 JB |
1035 | return; |
1036 | ||
37799e52 | 1037 | /* disregard subsequent announcements if we are already processing */ |
cc32abd4 JB |
1038 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) |
1039 | return; | |
1040 | ||
e6b7cde4 | 1041 | current_band = cbss->channel->band; |
c0f17eb9 | 1042 | memset(&csa_ie, 0, sizeof(csa_ie)); |
e6b7cde4 SW |
1043 | res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band, |
1044 | ifmgd->flags, | |
c0f17eb9 | 1045 | ifmgd->associated->bssid, &csa_ie); |
e6b7cde4 | 1046 | if (res < 0) |
b4f286a1 | 1047 | ieee80211_queue_work(&local->hw, |
882a7c69 | 1048 | &ifmgd->csa_connection_drop_work); |
e6b7cde4 | 1049 | if (res) |
cc32abd4 | 1050 | return; |
cd64f2a9 | 1051 | |
c0f17eb9 | 1052 | if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef, |
85220d71 JB |
1053 | IEEE80211_CHAN_DISABLED)) { |
1054 | sdata_info(sdata, | |
1055 | "AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n", | |
e6b7cde4 | 1056 | ifmgd->associated->bssid, |
c0f17eb9 CYY |
1057 | csa_ie.chandef.chan->center_freq, |
1058 | csa_ie.chandef.width, csa_ie.chandef.center_freq1, | |
1059 | csa_ie.chandef.center_freq2); | |
85220d71 JB |
1060 | ieee80211_queue_work(&local->hw, |
1061 | &ifmgd->csa_connection_drop_work); | |
1062 | return; | |
1063 | } | |
1064 | ||
57eebdf3 JB |
1065 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; |
1066 | ||
7578d575 | 1067 | mutex_lock(&local->chanctx_mtx); |
b4f286a1 | 1068 | if (local->use_chanctx) { |
7578d575 AN |
1069 | u32 num_chanctx = 0; |
1070 | list_for_each_entry(chanctx, &local->chanctx_list, list) | |
1071 | num_chanctx++; | |
1072 | ||
1073 | if (num_chanctx > 1 || | |
1074 | !(local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)) { | |
1075 | sdata_info(sdata, | |
1076 | "not handling chan-switch with channel contexts\n"); | |
1077 | ieee80211_queue_work(&local->hw, | |
1078 | &ifmgd->csa_connection_drop_work); | |
1079 | mutex_unlock(&local->chanctx_mtx); | |
1080 | return; | |
1081 | } | |
55de908a JB |
1082 | } |
1083 | ||
55de908a | 1084 | if (WARN_ON(!rcu_access_pointer(sdata->vif.chanctx_conf))) { |
7578d575 AN |
1085 | ieee80211_queue_work(&local->hw, |
1086 | &ifmgd->csa_connection_drop_work); | |
b4f286a1 | 1087 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1088 | return; |
1089 | } | |
1090 | chanctx = container_of(rcu_access_pointer(sdata->vif.chanctx_conf), | |
1091 | struct ieee80211_chanctx, conf); | |
1092 | if (chanctx->refcount > 1) { | |
1093 | sdata_info(sdata, | |
1094 | "channel switch with multiple interfaces on the same channel, disconnecting\n"); | |
b4f286a1 | 1095 | ieee80211_queue_work(&local->hw, |
55de908a | 1096 | &ifmgd->csa_connection_drop_work); |
b4f286a1 | 1097 | mutex_unlock(&local->chanctx_mtx); |
55de908a JB |
1098 | return; |
1099 | } | |
b4f286a1 | 1100 | mutex_unlock(&local->chanctx_mtx); |
55de908a | 1101 | |
33787fc4 | 1102 | sdata->csa_chandef = csa_ie.chandef; |
c46a73f3 | 1103 | sdata->vif.csa_active = true; |
55de908a | 1104 | |
c0f17eb9 | 1105 | if (csa_ie.mode) |
b4f286a1 | 1106 | ieee80211_stop_queues_by_reason(&local->hw, |
445ea4e8 | 1107 | IEEE80211_MAX_QUEUE_MAP, |
57eebdf3 JB |
1108 | IEEE80211_QUEUE_STOP_REASON_CSA); |
1109 | ||
b4f286a1 | 1110 | if (local->ops->channel_switch) { |
5ce6e438 | 1111 | /* use driver's channel switch callback */ |
57eebdf3 JB |
1112 | struct ieee80211_channel_switch ch_switch = { |
1113 | .timestamp = timestamp, | |
c0f17eb9 CYY |
1114 | .block_tx = csa_ie.mode, |
1115 | .chandef = csa_ie.chandef, | |
1116 | .count = csa_ie.count, | |
57eebdf3 JB |
1117 | }; |
1118 | ||
b4f286a1 | 1119 | drv_channel_switch(local, &ch_switch); |
5ce6e438 JB |
1120 | return; |
1121 | } | |
1122 | ||
1123 | /* channel switch handled in software */ | |
c0f17eb9 | 1124 | if (csa_ie.count <= 1) |
b4f286a1 | 1125 | ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work); |
57eebdf3 | 1126 | else |
cc32abd4 | 1127 | mod_timer(&ifmgd->chswitch_timer, |
c0f17eb9 | 1128 | TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval)); |
cc32abd4 JB |
1129 | } |
1130 | ||
1ea6f9c0 JB |
1131 | static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, |
1132 | struct ieee80211_channel *channel, | |
1133 | const u8 *country_ie, u8 country_ie_len, | |
1134 | const u8 *pwr_constr_elem) | |
cc32abd4 | 1135 | { |
04b7b2ff JB |
1136 | struct ieee80211_country_ie_triplet *triplet; |
1137 | int chan = ieee80211_frequency_to_channel(channel->center_freq); | |
1138 | int i, chan_pwr, chan_increment, new_ap_level; | |
1139 | bool have_chan_pwr = false; | |
cc32abd4 | 1140 | |
04b7b2ff JB |
1141 | /* Invalid IE */ |
1142 | if (country_ie_len % 2 || country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) | |
1ea6f9c0 | 1143 | return 0; |
cc32abd4 | 1144 | |
04b7b2ff JB |
1145 | triplet = (void *)(country_ie + 3); |
1146 | country_ie_len -= 3; | |
1147 | ||
1148 | switch (channel->band) { | |
1149 | default: | |
1150 | WARN_ON_ONCE(1); | |
1151 | /* fall through */ | |
1152 | case IEEE80211_BAND_2GHZ: | |
1153 | case IEEE80211_BAND_60GHZ: | |
1154 | chan_increment = 1; | |
1155 | break; | |
1156 | case IEEE80211_BAND_5GHZ: | |
1157 | chan_increment = 4; | |
1158 | break; | |
cc32abd4 | 1159 | } |
04b7b2ff JB |
1160 | |
1161 | /* find channel */ | |
1162 | while (country_ie_len >= 3) { | |
1163 | u8 first_channel = triplet->chans.first_channel; | |
1164 | ||
1165 | if (first_channel >= IEEE80211_COUNTRY_EXTENSION_ID) | |
1166 | goto next; | |
1167 | ||
1168 | for (i = 0; i < triplet->chans.num_channels; i++) { | |
1169 | if (first_channel + i * chan_increment == chan) { | |
1170 | have_chan_pwr = true; | |
1171 | chan_pwr = triplet->chans.max_power; | |
1172 | break; | |
1173 | } | |
1174 | } | |
1175 | if (have_chan_pwr) | |
1176 | break; | |
1177 | ||
1178 | next: | |
1179 | triplet++; | |
1180 | country_ie_len -= 3; | |
1181 | } | |
1182 | ||
1183 | if (!have_chan_pwr) | |
1ea6f9c0 | 1184 | return 0; |
04b7b2ff JB |
1185 | |
1186 | new_ap_level = max_t(int, 0, chan_pwr - *pwr_constr_elem); | |
1187 | ||
1ea6f9c0 JB |
1188 | if (sdata->ap_power_level == new_ap_level) |
1189 | return 0; | |
04b7b2ff JB |
1190 | |
1191 | sdata_info(sdata, | |
1192 | "Limiting TX power to %d (%d - %d) dBm as advertised by %pM\n", | |
1193 | new_ap_level, chan_pwr, *pwr_constr_elem, | |
1194 | sdata->u.mgd.bssid); | |
1ea6f9c0 JB |
1195 | sdata->ap_power_level = new_ap_level; |
1196 | if (__ieee80211_recalc_txpower(sdata)) | |
1197 | return BSS_CHANGED_TXPOWER; | |
1198 | return 0; | |
cc32abd4 JB |
1199 | } |
1200 | ||
965bedad JB |
1201 | /* powersave */ |
1202 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
1203 | struct ieee80211_sub_if_data *sdata) | |
1204 | { | |
1205 | struct ieee80211_conf *conf = &local->hw.conf; | |
1206 | ||
d5edaedc JB |
1207 | /* |
1208 | * If we are scanning right now then the parameters will | |
1209 | * take effect when scan finishes. | |
1210 | */ | |
fbe9c429 | 1211 | if (local->scanning) |
d5edaedc JB |
1212 | return; |
1213 | ||
965bedad JB |
1214 | if (conf->dynamic_ps_timeout > 0 && |
1215 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
1216 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1217 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
1218 | } else { | |
1219 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
1220 | ieee80211_send_nullfunc(local, sdata, 1); | |
375177bf | 1221 | |
2a13052f JO |
1222 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
1223 | (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) | |
1224 | return; | |
1225 | ||
1226 | conf->flags |= IEEE80211_CONF_PS; | |
1227 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
965bedad JB |
1228 | } |
1229 | } | |
1230 | ||
1231 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
1232 | { | |
1233 | struct ieee80211_conf *conf = &local->hw.conf; | |
1234 | ||
1235 | if (local->ps_sdata) { | |
965bedad JB |
1236 | ieee80211_enable_ps(local, local->ps_sdata); |
1237 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
1238 | conf->flags &= ~IEEE80211_CONF_PS; | |
1239 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1240 | del_timer_sync(&local->dynamic_ps_timer); | |
1241 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1242 | } | |
1243 | } | |
1244 | ||
808118cb JY |
1245 | static bool ieee80211_powersave_allowed(struct ieee80211_sub_if_data *sdata) |
1246 | { | |
1247 | struct ieee80211_if_managed *mgd = &sdata->u.mgd; | |
1248 | struct sta_info *sta = NULL; | |
c2c98fde | 1249 | bool authorized = false; |
808118cb JY |
1250 | |
1251 | if (!mgd->powersave) | |
1252 | return false; | |
1253 | ||
05cb9108 JB |
1254 | if (mgd->broken_ap) |
1255 | return false; | |
1256 | ||
808118cb JY |
1257 | if (!mgd->associated) |
1258 | return false; | |
1259 | ||
392b9ffb | 1260 | if (mgd->flags & IEEE80211_STA_CONNECTION_POLL) |
808118cb JY |
1261 | return false; |
1262 | ||
989c6505 | 1263 | if (!mgd->have_beacon) |
ce857888 AB |
1264 | return false; |
1265 | ||
808118cb JY |
1266 | rcu_read_lock(); |
1267 | sta = sta_info_get(sdata, mgd->bssid); | |
1268 | if (sta) | |
c2c98fde | 1269 | authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED); |
808118cb JY |
1270 | rcu_read_unlock(); |
1271 | ||
c2c98fde | 1272 | return authorized; |
808118cb JY |
1273 | } |
1274 | ||
965bedad | 1275 | /* need to hold RTNL or interface lock */ |
10f644a4 | 1276 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
1277 | { |
1278 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
1279 | int count = 0; | |
195e294d | 1280 | int timeout; |
965bedad JB |
1281 | |
1282 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
1283 | local->ps_sdata = NULL; | |
1284 | return; | |
1285 | } | |
1286 | ||
1287 | list_for_each_entry(sdata, &local->interfaces, list) { | |
9607e6b6 | 1288 | if (!ieee80211_sdata_running(sdata)) |
965bedad | 1289 | continue; |
8c7914de RM |
1290 | if (sdata->vif.type == NL80211_IFTYPE_AP) { |
1291 | /* If an AP vif is found, then disable PS | |
1292 | * by setting the count to zero thereby setting | |
1293 | * ps_sdata to NULL. | |
1294 | */ | |
1295 | count = 0; | |
1296 | break; | |
1297 | } | |
965bedad JB |
1298 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
1299 | continue; | |
1300 | found = sdata; | |
1301 | count++; | |
1302 | } | |
1303 | ||
808118cb | 1304 | if (count == 1 && ieee80211_powersave_allowed(found)) { |
10f644a4 JB |
1305 | s32 beaconint_us; |
1306 | ||
1307 | if (latency < 0) | |
ed77134b | 1308 | latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); |
10f644a4 JB |
1309 | |
1310 | beaconint_us = ieee80211_tu_to_usec( | |
1311 | found->vif.bss_conf.beacon_int); | |
1312 | ||
ff616381 | 1313 | timeout = local->dynamic_ps_forced_timeout; |
195e294d JO |
1314 | if (timeout < 0) { |
1315 | /* | |
ff616381 JO |
1316 | * Go to full PSM if the user configures a very low |
1317 | * latency requirement. | |
0ab82b04 EP |
1318 | * The 2000 second value is there for compatibility |
1319 | * until the PM_QOS_NETWORK_LATENCY is configured | |
1320 | * with real values. | |
195e294d | 1321 | */ |
0ab82b04 EP |
1322 | if (latency > (1900 * USEC_PER_MSEC) && |
1323 | latency != (2000 * USEC_PER_SEC)) | |
195e294d | 1324 | timeout = 0; |
ff616381 JO |
1325 | else |
1326 | timeout = 100; | |
195e294d | 1327 | } |
09b85568 | 1328 | local->hw.conf.dynamic_ps_timeout = timeout; |
195e294d | 1329 | |
04fe2037 | 1330 | if (beaconint_us > latency) { |
10f644a4 | 1331 | local->ps_sdata = NULL; |
04fe2037 | 1332 | } else { |
04fe2037 | 1333 | int maxslp = 1; |
826262c3 | 1334 | u8 dtimper = found->u.mgd.dtim_period; |
56007a02 JB |
1335 | |
1336 | /* If the TIM IE is invalid, pretend the value is 1 */ | |
1337 | if (!dtimper) | |
1338 | dtimper = 1; | |
1339 | else if (dtimper > 1) | |
04fe2037 JB |
1340 | maxslp = min_t(int, dtimper, |
1341 | latency / beaconint_us); | |
1342 | ||
9ccebe61 | 1343 | local->hw.conf.max_sleep_period = maxslp; |
56007a02 | 1344 | local->hw.conf.ps_dtim_period = dtimper; |
10f644a4 | 1345 | local->ps_sdata = found; |
04fe2037 | 1346 | } |
10f644a4 | 1347 | } else { |
965bedad | 1348 | local->ps_sdata = NULL; |
10f644a4 | 1349 | } |
965bedad JB |
1350 | |
1351 | ieee80211_change_ps(local); | |
1352 | } | |
1353 | ||
ab095877 EP |
1354 | void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata) |
1355 | { | |
1356 | bool ps_allowed = ieee80211_powersave_allowed(sdata); | |
1357 | ||
1358 | if (sdata->vif.bss_conf.ps != ps_allowed) { | |
1359 | sdata->vif.bss_conf.ps = ps_allowed; | |
1360 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_PS); | |
1361 | } | |
1362 | } | |
1363 | ||
965bedad JB |
1364 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) |
1365 | { | |
1366 | struct ieee80211_local *local = | |
1367 | container_of(work, struct ieee80211_local, | |
1368 | dynamic_ps_disable_work); | |
1369 | ||
1370 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1371 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1372 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1373 | } | |
1374 | ||
1375 | ieee80211_wake_queues_by_reason(&local->hw, | |
445ea4e8 | 1376 | IEEE80211_MAX_QUEUE_MAP, |
965bedad JB |
1377 | IEEE80211_QUEUE_STOP_REASON_PS); |
1378 | } | |
1379 | ||
1380 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
1381 | { | |
1382 | struct ieee80211_local *local = | |
1383 | container_of(work, struct ieee80211_local, | |
1384 | dynamic_ps_enable_work); | |
1385 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
5e34069c | 1386 | struct ieee80211_if_managed *ifmgd; |
1ddc2867 RM |
1387 | unsigned long flags; |
1388 | int q; | |
965bedad JB |
1389 | |
1390 | /* can only happen when PS was just disabled anyway */ | |
1391 | if (!sdata) | |
1392 | return; | |
1393 | ||
5e34069c CL |
1394 | ifmgd = &sdata->u.mgd; |
1395 | ||
965bedad JB |
1396 | if (local->hw.conf.flags & IEEE80211_CONF_PS) |
1397 | return; | |
1398 | ||
09b85568 | 1399 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
77b7023a AN |
1400 | /* don't enter PS if TX frames are pending */ |
1401 | if (drv_tx_frames_pending(local)) { | |
1ddc2867 RM |
1402 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1403 | msecs_to_jiffies( | |
1404 | local->hw.conf.dynamic_ps_timeout)); | |
1405 | return; | |
1406 | } | |
77b7023a AN |
1407 | |
1408 | /* | |
1409 | * transmission can be stopped by others which leads to | |
1410 | * dynamic_ps_timer expiry. Postpone the ps timer if it | |
1411 | * is not the actual idle state. | |
1412 | */ | |
1413 | spin_lock_irqsave(&local->queue_stop_reason_lock, flags); | |
1414 | for (q = 0; q < local->hw.queues; q++) { | |
1415 | if (local->queue_stop_reasons[q]) { | |
1416 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, | |
1417 | flags); | |
1418 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1419 | msecs_to_jiffies( | |
1420 | local->hw.conf.dynamic_ps_timeout)); | |
1421 | return; | |
1422 | } | |
1423 | } | |
1424 | spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); | |
1ddc2867 | 1425 | } |
1ddc2867 | 1426 | |
375177bf | 1427 | if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && |
9c38a8b4 | 1428 | !(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
a1598383 | 1429 | if (drv_tx_frames_pending(local)) { |
e8306f98 VN |
1430 | mod_timer(&local->dynamic_ps_timer, jiffies + |
1431 | msecs_to_jiffies( | |
1432 | local->hw.conf.dynamic_ps_timeout)); | |
a1598383 | 1433 | } else { |
e8306f98 VN |
1434 | ieee80211_send_nullfunc(local, sdata, 1); |
1435 | /* Flush to get the tx status of nullfunc frame */ | |
39ecc01d | 1436 | ieee80211_flush_queues(local, sdata); |
e8306f98 | 1437 | } |
f3e85b9e VN |
1438 | } |
1439 | ||
2a13052f JO |
1440 | if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && |
1441 | (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || | |
375177bf VN |
1442 | (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { |
1443 | ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; | |
1444 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
1445 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1446 | } | |
965bedad JB |
1447 | } |
1448 | ||
1449 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
1450 | { | |
1451 | struct ieee80211_local *local = (void *) data; | |
1452 | ||
78f1a8b7 | 1453 | if (local->quiescing || local->suspended) |
5bb644a0 JB |
1454 | return; |
1455 | ||
42935eca | 1456 | ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); |
965bedad JB |
1457 | } |
1458 | ||
164eb02d SW |
1459 | void ieee80211_dfs_cac_timer_work(struct work_struct *work) |
1460 | { | |
1461 | struct delayed_work *delayed_work = | |
1462 | container_of(work, struct delayed_work, work); | |
1463 | struct ieee80211_sub_if_data *sdata = | |
1464 | container_of(delayed_work, struct ieee80211_sub_if_data, | |
1465 | dfs_cac_timer_work); | |
d2859df5 | 1466 | struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef; |
164eb02d | 1467 | |
34a3740d JB |
1468 | mutex_lock(&sdata->local->mtx); |
1469 | if (sdata->wdev.cac_started) { | |
1470 | ieee80211_vif_release_channel(sdata); | |
1471 | cfg80211_cac_event(sdata->dev, &chandef, | |
1472 | NL80211_RADAR_CAC_FINISHED, | |
1473 | GFP_KERNEL); | |
1474 | } | |
1475 | mutex_unlock(&sdata->local->mtx); | |
164eb02d SW |
1476 | } |
1477 | ||
60f8b39c | 1478 | /* MLME */ |
7d25745d | 1479 | static bool ieee80211_sta_wmm_params(struct ieee80211_local *local, |
4ced3f74 | 1480 | struct ieee80211_sub_if_data *sdata, |
4a3cb702 | 1481 | const u8 *wmm_param, size_t wmm_param_len) |
f0706e82 | 1482 | { |
f0706e82 | 1483 | struct ieee80211_tx_queue_params params; |
4ced3f74 | 1484 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1485 | size_t left; |
1486 | int count; | |
4a3cb702 JB |
1487 | const u8 *pos; |
1488 | u8 uapsd_queues = 0; | |
f0706e82 | 1489 | |
e1b3ec1a | 1490 | if (!local->ops->conf_tx) |
7d25745d | 1491 | return false; |
e1b3ec1a | 1492 | |
32c5057b | 1493 | if (local->hw.queues < IEEE80211_NUM_ACS) |
7d25745d | 1494 | return false; |
3434fbd3 JB |
1495 | |
1496 | if (!wmm_param) | |
7d25745d | 1497 | return false; |
3434fbd3 | 1498 | |
f0706e82 | 1499 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
7d25745d | 1500 | return false; |
ab13315a KV |
1501 | |
1502 | if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) | |
dc41e4d4 | 1503 | uapsd_queues = ifmgd->uapsd_queues; |
ab13315a | 1504 | |
f0706e82 | 1505 | count = wmm_param[6] & 0x0f; |
46900298 | 1506 | if (count == ifmgd->wmm_last_param_set) |
7d25745d | 1507 | return false; |
46900298 | 1508 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
1509 | |
1510 | pos = wmm_param + 8; | |
1511 | left = wmm_param_len - 8; | |
1512 | ||
1513 | memset(¶ms, 0, sizeof(params)); | |
1514 | ||
00e96dec | 1515 | sdata->wmm_acm = 0; |
f0706e82 JB |
1516 | for (; left >= 4; left -= 4, pos += 4) { |
1517 | int aci = (pos[0] >> 5) & 0x03; | |
1518 | int acm = (pos[0] >> 4) & 0x01; | |
ab13315a | 1519 | bool uapsd = false; |
f0706e82 JB |
1520 | int queue; |
1521 | ||
1522 | switch (aci) { | |
0eeb59fe | 1523 | case 1: /* AC_BK */ |
e100bb64 | 1524 | queue = 3; |
988c0f72 | 1525 | if (acm) |
00e96dec | 1526 | sdata->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
ab13315a KV |
1527 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) |
1528 | uapsd = true; | |
f0706e82 | 1529 | break; |
0eeb59fe | 1530 | case 2: /* AC_VI */ |
e100bb64 | 1531 | queue = 1; |
988c0f72 | 1532 | if (acm) |
00e96dec | 1533 | sdata->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
ab13315a KV |
1534 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) |
1535 | uapsd = true; | |
f0706e82 | 1536 | break; |
0eeb59fe | 1537 | case 3: /* AC_VO */ |
e100bb64 | 1538 | queue = 0; |
988c0f72 | 1539 | if (acm) |
00e96dec | 1540 | sdata->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
ab13315a KV |
1541 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) |
1542 | uapsd = true; | |
f0706e82 | 1543 | break; |
0eeb59fe | 1544 | case 0: /* AC_BE */ |
f0706e82 | 1545 | default: |
e100bb64 | 1546 | queue = 2; |
988c0f72 | 1547 | if (acm) |
00e96dec | 1548 | sdata->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
ab13315a KV |
1549 | if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) |
1550 | uapsd = true; | |
f0706e82 JB |
1551 | break; |
1552 | } | |
1553 | ||
1554 | params.aifs = pos[0] & 0x0f; | |
1555 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
1556 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 1557 | params.txop = get_unaligned_le16(pos + 2); |
908f8d07 | 1558 | params.acm = acm; |
ab13315a KV |
1559 | params.uapsd = uapsd; |
1560 | ||
bdcbd8e0 JB |
1561 | mlme_dbg(sdata, |
1562 | "WMM queue=%d aci=%d acm=%d aifs=%d cWmin=%d cWmax=%d txop=%d uapsd=%d\n", | |
1563 | queue, aci, acm, | |
1564 | params.aifs, params.cw_min, params.cw_max, | |
1565 | params.txop, params.uapsd); | |
f6f3def3 EP |
1566 | sdata->tx_conf[queue] = params; |
1567 | if (drv_conf_tx(local, sdata, queue, ¶ms)) | |
bdcbd8e0 JB |
1568 | sdata_err(sdata, |
1569 | "failed to set TX queue parameters for queue %d\n", | |
1570 | queue); | |
f0706e82 | 1571 | } |
e1b3ec1a SG |
1572 | |
1573 | /* enable WMM or activate new settings */ | |
4ced3f74 | 1574 | sdata->vif.bss_conf.qos = true; |
7d25745d | 1575 | return true; |
f0706e82 JB |
1576 | } |
1577 | ||
925e64c3 SG |
1578 | static void __ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) |
1579 | { | |
1580 | lockdep_assert_held(&sdata->local->mtx); | |
1581 | ||
392b9ffb | 1582 | sdata->u.mgd.flags &= ~IEEE80211_STA_CONNECTION_POLL; |
925e64c3 SG |
1583 | ieee80211_run_deferred_scan(sdata->local); |
1584 | } | |
1585 | ||
1586 | static void ieee80211_stop_poll(struct ieee80211_sub_if_data *sdata) | |
1587 | { | |
1588 | mutex_lock(&sdata->local->mtx); | |
1589 | __ieee80211_stop_poll(sdata); | |
1590 | mutex_unlock(&sdata->local->mtx); | |
1591 | } | |
1592 | ||
7a5158ef JB |
1593 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
1594 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 1595 | { |
bda3933a | 1596 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
471b3efd | 1597 | u32 changed = 0; |
7a5158ef JB |
1598 | bool use_protection; |
1599 | bool use_short_preamble; | |
1600 | bool use_short_slot; | |
1601 | ||
1602 | if (erp_valid) { | |
1603 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
1604 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
1605 | } else { | |
1606 | use_protection = false; | |
1607 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
1608 | } | |
1609 | ||
1610 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
55de908a | 1611 | if (ieee80211_get_sdata_band(sdata) == IEEE80211_BAND_5GHZ) |
43d35343 | 1612 | use_short_slot = true; |
5628221c | 1613 | |
471b3efd | 1614 | if (use_protection != bss_conf->use_cts_prot) { |
471b3efd JB |
1615 | bss_conf->use_cts_prot = use_protection; |
1616 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 1617 | } |
7e9ed188 | 1618 | |
d43c7b37 | 1619 | if (use_short_preamble != bss_conf->use_short_preamble) { |
d43c7b37 | 1620 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 1621 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 1622 | } |
d9430a32 | 1623 | |
7a5158ef | 1624 | if (use_short_slot != bss_conf->use_short_slot) { |
7a5158ef JB |
1625 | bss_conf->use_short_slot = use_short_slot; |
1626 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
1627 | } |
1628 | ||
1629 | return changed; | |
1630 | } | |
1631 | ||
f698d856 | 1632 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
0c1ad2ca | 1633 | struct cfg80211_bss *cbss, |
ae5eb026 | 1634 | u32 bss_info_changed) |
f0706e82 | 1635 | { |
0c1ad2ca | 1636 | struct ieee80211_bss *bss = (void *)cbss->priv; |
471b3efd | 1637 | struct ieee80211_local *local = sdata->local; |
68542962 | 1638 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
d6f2da5b | 1639 | |
ae5eb026 | 1640 | bss_info_changed |= BSS_CHANGED_ASSOC; |
77fdaa12 | 1641 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
50ae34a2 | 1642 | bss_conf->assoc_capability, bss->has_erp_value, bss->erp_value); |
21c0cbe7 | 1643 | |
7ccc8bd7 | 1644 | sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( |
59c1ec2b | 1645 | beacon_loss_count * bss_conf->beacon_int)); |
7ccc8bd7 | 1646 | |
0c1ad2ca JB |
1647 | sdata->u.mgd.associated = cbss; |
1648 | memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); | |
f0706e82 | 1649 | |
17e4ec14 JM |
1650 | sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; |
1651 | ||
488dd7b5 | 1652 | if (sdata->vif.p2p) { |
9caf0364 | 1653 | const struct cfg80211_bss_ies *ies; |
488dd7b5 | 1654 | |
9caf0364 JB |
1655 | rcu_read_lock(); |
1656 | ies = rcu_dereference(cbss->ies); | |
1657 | if (ies) { | |
9caf0364 JB |
1658 | int ret; |
1659 | ||
1660 | ret = cfg80211_get_p2p_attr( | |
1661 | ies->data, ies->len, | |
1662 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
67baf663 JD |
1663 | (u8 *) &bss_conf->p2p_noa_attr, |
1664 | sizeof(bss_conf->p2p_noa_attr)); | |
9caf0364 | 1665 | if (ret >= 2) { |
67baf663 JD |
1666 | sdata->u.mgd.p2p_noa_index = |
1667 | bss_conf->p2p_noa_attr.index; | |
9caf0364 | 1668 | bss_info_changed |= BSS_CHANGED_P2P_PS; |
9caf0364 | 1669 | } |
488dd7b5 | 1670 | } |
9caf0364 | 1671 | rcu_read_unlock(); |
488dd7b5 JB |
1672 | } |
1673 | ||
b291ba11 | 1674 | /* just to be sure */ |
925e64c3 | 1675 | ieee80211_stop_poll(sdata); |
b291ba11 | 1676 | |
9ac19a90 | 1677 | ieee80211_led_assoc(local, 1); |
9306102e | 1678 | |
989c6505 | 1679 | if (sdata->u.mgd.have_beacon) { |
826262c3 JB |
1680 | /* |
1681 | * If the AP is buggy we may get here with no DTIM period | |
1682 | * known, so assume it's 1 which is the only safe assumption | |
1683 | * in that case, although if the TIM IE is broken powersave | |
1684 | * probably just won't work at all. | |
1685 | */ | |
1686 | bss_conf->dtim_period = sdata->u.mgd.dtim_period ?: 1; | |
817cee76 | 1687 | bss_conf->beacon_rate = bss->beacon_rate; |
989c6505 | 1688 | bss_info_changed |= BSS_CHANGED_BEACON_INFO; |
826262c3 | 1689 | } else { |
817cee76 | 1690 | bss_conf->beacon_rate = NULL; |
e5b900d2 | 1691 | bss_conf->dtim_period = 0; |
826262c3 | 1692 | } |
e5b900d2 | 1693 | |
68542962 | 1694 | bss_conf->assoc = 1; |
9cef8737 | 1695 | |
a97c13c3 | 1696 | /* Tell the driver to monitor connection quality (if supported) */ |
ea086359 | 1697 | if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI && |
68542962 | 1698 | bss_conf->cqm_rssi_thold) |
a97c13c3 JO |
1699 | bss_info_changed |= BSS_CHANGED_CQM; |
1700 | ||
68542962 | 1701 | /* Enable ARP filtering */ |
0f19b41e | 1702 | if (bss_conf->arp_addr_cnt) |
68542962 | 1703 | bss_info_changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1704 | |
ae5eb026 | 1705 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 1706 | |
056508dc JB |
1707 | mutex_lock(&local->iflist_mtx); |
1708 | ieee80211_recalc_ps(local, -1); | |
1709 | mutex_unlock(&local->iflist_mtx); | |
e0cb686f | 1710 | |
04ecd257 | 1711 | ieee80211_recalc_smps(sdata); |
ab095877 EP |
1712 | ieee80211_recalc_ps_vif(sdata); |
1713 | ||
9ac19a90 | 1714 | netif_carrier_on(sdata->dev); |
f0706e82 JB |
1715 | } |
1716 | ||
e69e95db | 1717 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
37ad3888 JB |
1718 | u16 stype, u16 reason, bool tx, |
1719 | u8 *frame_buf) | |
aa458d17 | 1720 | { |
46900298 | 1721 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1722 | struct ieee80211_local *local = sdata->local; |
3cc5240b | 1723 | u32 changed = 0; |
aa458d17 | 1724 | |
8d61ffa5 | 1725 | sdata_assert_lock(sdata); |
77fdaa12 | 1726 | |
37ad3888 JB |
1727 | if (WARN_ON_ONCE(tx && !frame_buf)) |
1728 | return; | |
1729 | ||
b291ba11 JB |
1730 | if (WARN_ON(!ifmgd->associated)) |
1731 | return; | |
1732 | ||
79543d8e DS |
1733 | ieee80211_stop_poll(sdata); |
1734 | ||
77fdaa12 | 1735 | ifmgd->associated = NULL; |
aa458d17 TW |
1736 | netif_carrier_off(sdata->dev); |
1737 | ||
88bc40e8 EP |
1738 | /* |
1739 | * if we want to get out of ps before disassoc (why?) we have | |
1740 | * to do it before sending disassoc, as otherwise the null-packet | |
1741 | * won't be valid. | |
1742 | */ | |
1743 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
1744 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1745 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
1746 | } | |
1747 | local->ps_sdata = NULL; | |
1748 | ||
ab095877 EP |
1749 | /* disable per-vif ps */ |
1750 | ieee80211_recalc_ps_vif(sdata); | |
1751 | ||
f823981e EP |
1752 | /* flush out any pending frame (e.g. DELBA) before deauth/disassoc */ |
1753 | if (tx) | |
39ecc01d | 1754 | ieee80211_flush_queues(local, sdata); |
f823981e | 1755 | |
37ad3888 JB |
1756 | /* deauthenticate/disassociate now */ |
1757 | if (tx || frame_buf) | |
88a9e31c EP |
1758 | ieee80211_send_deauth_disassoc(sdata, ifmgd->bssid, stype, |
1759 | reason, tx, frame_buf); | |
37ad3888 JB |
1760 | |
1761 | /* flush out frame */ | |
1762 | if (tx) | |
39ecc01d | 1763 | ieee80211_flush_queues(local, sdata); |
37ad3888 | 1764 | |
88a9e31c EP |
1765 | /* clear bssid only after building the needed mgmt frames */ |
1766 | memset(ifmgd->bssid, 0, ETH_ALEN); | |
1767 | ||
37ad3888 | 1768 | /* remove AP and TDLS peers */ |
d34ba216 | 1769 | sta_info_flush(sdata); |
37ad3888 JB |
1770 | |
1771 | /* finally reset all BSS / config parameters */ | |
f5e5bf25 TW |
1772 | changed |= ieee80211_reset_erp_info(sdata); |
1773 | ||
f5e5bf25 | 1774 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1775 | changed |= BSS_CHANGED_ASSOC; |
1776 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1777 | |
67baf663 JD |
1778 | ifmgd->p2p_noa_index = -1; |
1779 | memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, | |
1780 | sizeof(sdata->vif.bss_conf.p2p_noa_attr)); | |
488dd7b5 | 1781 | |
dd5ecfea | 1782 | /* on the next assoc, re-program HT/VHT parameters */ |
ef96a842 BG |
1783 | memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa)); |
1784 | memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask)); | |
dd5ecfea JB |
1785 | memset(&ifmgd->vht_capa, 0, sizeof(ifmgd->vht_capa)); |
1786 | memset(&ifmgd->vht_capa_mask, 0, sizeof(ifmgd->vht_capa_mask)); | |
413ad50a | 1787 | |
1ea6f9c0 | 1788 | sdata->ap_power_level = IEEE80211_UNSET_POWER_LEVEL; |
a8302de9 | 1789 | |
520eb820 KV |
1790 | del_timer_sync(&local->dynamic_ps_timer); |
1791 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1792 | ||
68542962 | 1793 | /* Disable ARP filtering */ |
0f19b41e | 1794 | if (sdata->vif.bss_conf.arp_addr_cnt) |
68542962 | 1795 | changed |= BSS_CHANGED_ARP_FILTER; |
68542962 | 1796 | |
3abead59 JB |
1797 | sdata->vif.bss_conf.qos = false; |
1798 | changed |= BSS_CHANGED_QOS; | |
1799 | ||
0aaffa9b JB |
1800 | /* The BSSID (not really interesting) and HT changed */ |
1801 | changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; | |
ae5eb026 | 1802 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 | 1803 | |
3abead59 JB |
1804 | /* disassociated - set to defaults now */ |
1805 | ieee80211_set_wmm_default(sdata, false); | |
1806 | ||
b9dcf712 JB |
1807 | del_timer_sync(&sdata->u.mgd.conn_mon_timer); |
1808 | del_timer_sync(&sdata->u.mgd.bcn_mon_timer); | |
1809 | del_timer_sync(&sdata->u.mgd.timer); | |
1810 | del_timer_sync(&sdata->u.mgd.chswitch_timer); | |
2d9957cc | 1811 | |
826262c3 | 1812 | sdata->vif.bss_conf.dtim_period = 0; |
817cee76 AB |
1813 | sdata->vif.bss_conf.beacon_rate = NULL; |
1814 | ||
989c6505 | 1815 | ifmgd->have_beacon = false; |
826262c3 | 1816 | |
028e8da0 | 1817 | ifmgd->flags = 0; |
34a3740d | 1818 | mutex_lock(&local->mtx); |
028e8da0 | 1819 | ieee80211_vif_release_channel(sdata); |
34a3740d | 1820 | mutex_unlock(&local->mtx); |
2475b1cc MS |
1821 | |
1822 | sdata->encrypt_headroom = IEEE80211_ENCRYPT_HEADROOM; | |
aa458d17 | 1823 | } |
f0706e82 | 1824 | |
3cf335d5 KV |
1825 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1826 | struct ieee80211_hdr *hdr) | |
1827 | { | |
1828 | /* | |
1829 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1830 | * from AP because we know that the connection is working both ways | |
1831 | * at that time. But multicast frames (and hence also beacons) must | |
1832 | * be ignored here, because we need to trigger the timer during | |
b291ba11 JB |
1833 | * data idle periods for sending the periodic probe request to the |
1834 | * AP we're connected to. | |
3cf335d5 | 1835 | */ |
b291ba11 JB |
1836 | if (is_multicast_ether_addr(hdr->addr1)) |
1837 | return; | |
1838 | ||
be099e82 | 1839 | ieee80211_sta_reset_conn_monitor(sdata); |
3cf335d5 | 1840 | } |
f0706e82 | 1841 | |
4e5ff376 FF |
1842 | static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) |
1843 | { | |
1844 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
133d40f9 | 1845 | struct ieee80211_local *local = sdata->local; |
4e5ff376 | 1846 | |
133d40f9 | 1847 | mutex_lock(&local->mtx); |
392b9ffb SG |
1848 | if (!(ifmgd->flags & IEEE80211_STA_CONNECTION_POLL)) |
1849 | goto out; | |
4e5ff376 | 1850 | |
925e64c3 | 1851 | __ieee80211_stop_poll(sdata); |
133d40f9 SG |
1852 | |
1853 | mutex_lock(&local->iflist_mtx); | |
1854 | ieee80211_recalc_ps(local, -1); | |
1855 | mutex_unlock(&local->iflist_mtx); | |
4e5ff376 FF |
1856 | |
1857 | if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) | |
133d40f9 | 1858 | goto out; |
4e5ff376 FF |
1859 | |
1860 | /* | |
1861 | * We've received a probe response, but are not sure whether | |
1862 | * we have or will be receiving any beacons or data, so let's | |
1863 | * schedule the timers again, just in case. | |
1864 | */ | |
1865 | ieee80211_sta_reset_beacon_monitor(sdata); | |
1866 | ||
1867 | mod_timer(&ifmgd->conn_mon_timer, | |
1868 | round_jiffies_up(jiffies + | |
1869 | IEEE80211_CONNECTION_IDLE_TIME)); | |
133d40f9 | 1870 | out: |
133d40f9 | 1871 | mutex_unlock(&local->mtx); |
4e5ff376 FF |
1872 | } |
1873 | ||
1874 | void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, | |
04ac3c0e | 1875 | struct ieee80211_hdr *hdr, bool ack) |
4e5ff376 | 1876 | { |
75706d0e | 1877 | if (!ieee80211_is_data(hdr->frame_control)) |
4e5ff376 FF |
1878 | return; |
1879 | ||
4e5ff376 FF |
1880 | if (ieee80211_is_nullfunc(hdr->frame_control) && |
1881 | sdata->u.mgd.probe_send_count > 0) { | |
04ac3c0e | 1882 | if (ack) |
cab1c7fd | 1883 | ieee80211_sta_reset_conn_monitor(sdata); |
04ac3c0e FF |
1884 | else |
1885 | sdata->u.mgd.nullfunc_failed = true; | |
4e5ff376 | 1886 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
cab1c7fd | 1887 | return; |
4e5ff376 | 1888 | } |
cab1c7fd WD |
1889 | |
1890 | if (ack) | |
1891 | ieee80211_sta_reset_conn_monitor(sdata); | |
4e5ff376 FF |
1892 | } |
1893 | ||
a43abf29 ML |
1894 | static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) |
1895 | { | |
1896 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1897 | const u8 *ssid; | |
f01a067d | 1898 | u8 *dst = ifmgd->associated->bssid; |
180205bd | 1899 | u8 unicast_limit = max(1, max_probe_tries - 3); |
f01a067d LR |
1900 | |
1901 | /* | |
1902 | * Try sending broadcast probe requests for the last three | |
1903 | * probe requests after the first ones failed since some | |
1904 | * buggy APs only support broadcast probe requests. | |
1905 | */ | |
1906 | if (ifmgd->probe_send_count >= unicast_limit) | |
1907 | dst = NULL; | |
a43abf29 | 1908 | |
4e5ff376 FF |
1909 | /* |
1910 | * When the hardware reports an accurate Tx ACK status, it's | |
1911 | * better to send a nullfunc frame instead of a probe request, | |
1912 | * as it will kick us off the AP quickly if we aren't associated | |
1913 | * anymore. The timeout will be reset if the frame is ACKed by | |
1914 | * the AP. | |
1915 | */ | |
992e68bf SD |
1916 | ifmgd->probe_send_count++; |
1917 | ||
04ac3c0e FF |
1918 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
1919 | ifmgd->nullfunc_failed = false; | |
4e5ff376 | 1920 | ieee80211_send_nullfunc(sdata->local, sdata, 0); |
04ac3c0e | 1921 | } else { |
88c868c4 SG |
1922 | int ssid_len; |
1923 | ||
9caf0364 | 1924 | rcu_read_lock(); |
4e5ff376 | 1925 | ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); |
88c868c4 SG |
1926 | if (WARN_ON_ONCE(ssid == NULL)) |
1927 | ssid_len = 0; | |
1928 | else | |
1929 | ssid_len = ssid[1]; | |
1930 | ||
1931 | ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid_len, NULL, | |
1672c0e3 | 1932 | 0, (u32) -1, true, 0, |
55de908a | 1933 | ifmgd->associated->channel, false); |
9caf0364 | 1934 | rcu_read_unlock(); |
4e5ff376 | 1935 | } |
a43abf29 | 1936 | |
180205bd | 1937 | ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); |
8d61ffa5 | 1938 | run_again(sdata, ifmgd->probe_timeout); |
f69b9c79 | 1939 | if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
39ecc01d | 1940 | ieee80211_flush_queues(sdata->local, sdata); |
a43abf29 ML |
1941 | } |
1942 | ||
b291ba11 JB |
1943 | static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, |
1944 | bool beacon) | |
04de8381 | 1945 | { |
04de8381 | 1946 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
b291ba11 | 1947 | bool already = false; |
34bfc411 | 1948 | |
9607e6b6 | 1949 | if (!ieee80211_sdata_running(sdata)) |
0e2b6286 JB |
1950 | return; |
1951 | ||
8d61ffa5 | 1952 | sdata_lock(sdata); |
77fdaa12 JB |
1953 | |
1954 | if (!ifmgd->associated) | |
1955 | goto out; | |
1956 | ||
133d40f9 SG |
1957 | mutex_lock(&sdata->local->mtx); |
1958 | ||
1959 | if (sdata->local->tmp_channel || sdata->local->scanning) { | |
1960 | mutex_unlock(&sdata->local->mtx); | |
1961 | goto out; | |
1962 | } | |
1963 | ||
a13fbe54 | 1964 | if (beacon) { |
bdcbd8e0 | 1965 | mlme_dbg_ratelimited(sdata, |
59c1ec2b BG |
1966 | "detected beacon loss from AP (missed %d beacons) - probing\n", |
1967 | beacon_loss_count); | |
bdcbd8e0 | 1968 | |
a13fbe54 BG |
1969 | ieee80211_cqm_rssi_notify(&sdata->vif, |
1970 | NL80211_CQM_RSSI_BEACON_LOSS_EVENT, | |
1971 | GFP_KERNEL); | |
1972 | } | |
04de8381 | 1973 | |
b291ba11 JB |
1974 | /* |
1975 | * The driver/our work has already reported this event or the | |
1976 | * connection monitoring has kicked in and we have already sent | |
1977 | * a probe request. Or maybe the AP died and the driver keeps | |
1978 | * reporting until we disassociate... | |
1979 | * | |
1980 | * In either case we have to ignore the current call to this | |
1981 | * function (except for setting the correct probe reason bit) | |
1982 | * because otherwise we would reset the timer every time and | |
1983 | * never check whether we received a probe response! | |
1984 | */ | |
392b9ffb | 1985 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) |
b291ba11 JB |
1986 | already = true; |
1987 | ||
12b5f34d EP |
1988 | ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; |
1989 | ||
133d40f9 SG |
1990 | mutex_unlock(&sdata->local->mtx); |
1991 | ||
b291ba11 JB |
1992 | if (already) |
1993 | goto out; | |
1994 | ||
4e751843 JB |
1995 | mutex_lock(&sdata->local->iflist_mtx); |
1996 | ieee80211_recalc_ps(sdata->local, -1); | |
1997 | mutex_unlock(&sdata->local->iflist_mtx); | |
1998 | ||
a43abf29 ML |
1999 | ifmgd->probe_send_count = 0; |
2000 | ieee80211_mgd_probe_ap_send(sdata); | |
77fdaa12 | 2001 | out: |
8d61ffa5 | 2002 | sdata_unlock(sdata); |
04de8381 KV |
2003 | } |
2004 | ||
a619a4c0 JO |
2005 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
2006 | struct ieee80211_vif *vif) | |
2007 | { | |
2008 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2009 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d9b3b28b | 2010 | struct cfg80211_bss *cbss; |
a619a4c0 JO |
2011 | struct sk_buff *skb; |
2012 | const u8 *ssid; | |
88c868c4 | 2013 | int ssid_len; |
a619a4c0 JO |
2014 | |
2015 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2016 | return NULL; | |
2017 | ||
8d61ffa5 | 2018 | sdata_assert_lock(sdata); |
a619a4c0 | 2019 | |
d9b3b28b EP |
2020 | if (ifmgd->associated) |
2021 | cbss = ifmgd->associated; | |
2022 | else if (ifmgd->auth_data) | |
2023 | cbss = ifmgd->auth_data->bss; | |
2024 | else if (ifmgd->assoc_data) | |
2025 | cbss = ifmgd->assoc_data->bss; | |
2026 | else | |
a619a4c0 JO |
2027 | return NULL; |
2028 | ||
9caf0364 | 2029 | rcu_read_lock(); |
d9b3b28b | 2030 | ssid = ieee80211_bss_get_ie(cbss, WLAN_EID_SSID); |
88c868c4 SG |
2031 | if (WARN_ON_ONCE(ssid == NULL)) |
2032 | ssid_len = 0; | |
2033 | else | |
2034 | ssid_len = ssid[1]; | |
2035 | ||
d9b3b28b | 2036 | skb = ieee80211_build_probe_req(sdata, cbss->bssid, |
55de908a | 2037 | (u32) -1, cbss->channel, |
6b77863b | 2038 | ssid + 2, ssid_len, |
85a237fe | 2039 | NULL, 0, true); |
9caf0364 | 2040 | rcu_read_unlock(); |
a619a4c0 JO |
2041 | |
2042 | return skb; | |
2043 | } | |
2044 | EXPORT_SYMBOL(ieee80211_ap_probereq_get); | |
2045 | ||
eef9e54c | 2046 | static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) |
1e4dcd01 JO |
2047 | { |
2048 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
6ae16775 | 2049 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
1e4dcd01 | 2050 | |
8d61ffa5 | 2051 | sdata_lock(sdata); |
1e4dcd01 | 2052 | if (!ifmgd->associated) { |
8d61ffa5 | 2053 | sdata_unlock(sdata); |
1e4dcd01 JO |
2054 | return; |
2055 | } | |
2056 | ||
37ad3888 JB |
2057 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
2058 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, | |
eef9e54c | 2059 | true, frame_buf); |
882a7c69 | 2060 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; |
7578d575 | 2061 | sdata->vif.csa_active = false; |
5b36ebd8 | 2062 | ieee80211_wake_queues_by_reason(&sdata->local->hw, |
445ea4e8 | 2063 | IEEE80211_MAX_QUEUE_MAP, |
5b36ebd8 | 2064 | IEEE80211_QUEUE_STOP_REASON_CSA); |
7da7cc1d | 2065 | |
6ff57cf8 JB |
2066 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
2067 | IEEE80211_DEAUTH_FRAME_LEN); | |
8d61ffa5 | 2068 | sdata_unlock(sdata); |
1e4dcd01 JO |
2069 | } |
2070 | ||
cc74c0c7 | 2071 | static void ieee80211_beacon_connection_loss_work(struct work_struct *work) |
b291ba11 JB |
2072 | { |
2073 | struct ieee80211_sub_if_data *sdata = | |
2074 | container_of(work, struct ieee80211_sub_if_data, | |
1e4dcd01 | 2075 | u.mgd.beacon_connection_loss_work); |
a85e1d55 PS |
2076 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2077 | struct sta_info *sta; | |
2078 | ||
2079 | if (ifmgd->associated) { | |
30fa9047 | 2080 | rcu_read_lock(); |
a85e1d55 PS |
2081 | sta = sta_info_get(sdata, ifmgd->bssid); |
2082 | if (sta) | |
2083 | sta->beacon_loss_count++; | |
30fa9047 | 2084 | rcu_read_unlock(); |
a85e1d55 | 2085 | } |
b291ba11 | 2086 | |
682bd38b | 2087 | if (ifmgd->connection_loss) { |
882a7c69 JB |
2088 | sdata_info(sdata, "Connection to AP %pM lost\n", |
2089 | ifmgd->bssid); | |
eef9e54c | 2090 | __ieee80211_disconnect(sdata); |
882a7c69 | 2091 | } else { |
1e4dcd01 | 2092 | ieee80211_mgd_probe_ap(sdata, true); |
882a7c69 JB |
2093 | } |
2094 | } | |
2095 | ||
2096 | static void ieee80211_csa_connection_drop_work(struct work_struct *work) | |
2097 | { | |
2098 | struct ieee80211_sub_if_data *sdata = | |
2099 | container_of(work, struct ieee80211_sub_if_data, | |
2100 | u.mgd.csa_connection_drop_work); | |
2101 | ||
eef9e54c | 2102 | __ieee80211_disconnect(sdata); |
b291ba11 JB |
2103 | } |
2104 | ||
04de8381 KV |
2105 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) |
2106 | { | |
2107 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1e4dcd01 | 2108 | struct ieee80211_hw *hw = &sdata->local->hw; |
04de8381 | 2109 | |
b5878a2d JB |
2110 | trace_api_beacon_loss(sdata); |
2111 | ||
682bd38b | 2112 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 | 2113 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
04de8381 KV |
2114 | } |
2115 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
2116 | ||
1e4dcd01 JO |
2117 | void ieee80211_connection_loss(struct ieee80211_vif *vif) |
2118 | { | |
2119 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
2120 | struct ieee80211_hw *hw = &sdata->local->hw; | |
2121 | ||
b5878a2d JB |
2122 | trace_api_connection_loss(sdata); |
2123 | ||
682bd38b | 2124 | sdata->u.mgd.connection_loss = true; |
1e4dcd01 JO |
2125 | ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); |
2126 | } | |
2127 | EXPORT_SYMBOL(ieee80211_connection_loss); | |
2128 | ||
2129 | ||
66e67e41 JB |
2130 | static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata, |
2131 | bool assoc) | |
2132 | { | |
2133 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; | |
2134 | ||
8d61ffa5 | 2135 | sdata_assert_lock(sdata); |
66e67e41 | 2136 | |
66e67e41 JB |
2137 | if (!assoc) { |
2138 | sta_info_destroy_addr(sdata, auth_data->bss->bssid); | |
2139 | ||
2140 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2141 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2142 | sdata->u.mgd.flags = 0; |
34a3740d | 2143 | mutex_lock(&sdata->local->mtx); |
55de908a | 2144 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2145 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2146 | } |
2147 | ||
5b112d3d | 2148 | cfg80211_put_bss(sdata->local->hw.wiphy, auth_data->bss); |
66e67e41 JB |
2149 | kfree(auth_data); |
2150 | sdata->u.mgd.auth_data = NULL; | |
2151 | } | |
2152 | ||
2153 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, | |
2154 | struct ieee80211_mgmt *mgmt, size_t len) | |
2155 | { | |
1672c0e3 | 2156 | struct ieee80211_local *local = sdata->local; |
66e67e41 JB |
2157 | struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data; |
2158 | u8 *pos; | |
2159 | struct ieee802_11_elems elems; | |
1672c0e3 | 2160 | u32 tx_flags = 0; |
66e67e41 JB |
2161 | |
2162 | pos = mgmt->u.auth.variable; | |
b2e506bf | 2163 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2164 | if (!elems.challenge) |
2165 | return; | |
2166 | auth_data->expected_transaction = 4; | |
a1845fc7 | 2167 | drv_mgd_prepare_tx(sdata->local, sdata); |
1672c0e3 JB |
2168 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
2169 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
2170 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
700e8ea6 | 2171 | ieee80211_send_auth(sdata, 3, auth_data->algorithm, 0, |
66e67e41 JB |
2172 | elems.challenge - 2, elems.challenge_len + 2, |
2173 | auth_data->bss->bssid, auth_data->bss->bssid, | |
2174 | auth_data->key, auth_data->key_len, | |
1672c0e3 | 2175 | auth_data->key_idx, tx_flags); |
66e67e41 JB |
2176 | } |
2177 | ||
8d61ffa5 JB |
2178 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
2179 | struct ieee80211_mgmt *mgmt, size_t len) | |
66e67e41 JB |
2180 | { |
2181 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2182 | u8 bssid[ETH_ALEN]; | |
2183 | u16 auth_alg, auth_transaction, status_code; | |
2184 | struct sta_info *sta; | |
2185 | ||
8d61ffa5 | 2186 | sdata_assert_lock(sdata); |
66e67e41 JB |
2187 | |
2188 | if (len < 24 + 6) | |
8d61ffa5 | 2189 | return; |
66e67e41 JB |
2190 | |
2191 | if (!ifmgd->auth_data || ifmgd->auth_data->done) | |
8d61ffa5 | 2192 | return; |
66e67e41 JB |
2193 | |
2194 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
2195 | ||
b203ca39 | 2196 | if (!ether_addr_equal(bssid, mgmt->bssid)) |
8d61ffa5 | 2197 | return; |
66e67e41 JB |
2198 | |
2199 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
2200 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
2201 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
2202 | ||
2203 | if (auth_alg != ifmgd->auth_data->algorithm || | |
0f4126e8 JM |
2204 | auth_transaction != ifmgd->auth_data->expected_transaction) { |
2205 | sdata_info(sdata, "%pM unexpected authentication state: alg %d (expected %d) transact %d (expected %d)\n", | |
2206 | mgmt->sa, auth_alg, ifmgd->auth_data->algorithm, | |
2207 | auth_transaction, | |
2208 | ifmgd->auth_data->expected_transaction); | |
8d61ffa5 | 2209 | return; |
0f4126e8 | 2210 | } |
66e67e41 JB |
2211 | |
2212 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2213 | sdata_info(sdata, "%pM denied authentication (status %d)\n", |
2214 | mgmt->sa, status_code); | |
dac211ec | 2215 | ieee80211_destroy_auth_data(sdata, false); |
6ff57cf8 | 2216 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2217 | return; |
66e67e41 JB |
2218 | } |
2219 | ||
2220 | switch (ifmgd->auth_data->algorithm) { | |
2221 | case WLAN_AUTH_OPEN: | |
2222 | case WLAN_AUTH_LEAP: | |
2223 | case WLAN_AUTH_FT: | |
6b8ece3a | 2224 | case WLAN_AUTH_SAE: |
66e67e41 JB |
2225 | break; |
2226 | case WLAN_AUTH_SHARED_KEY: | |
2227 | if (ifmgd->auth_data->expected_transaction != 4) { | |
2228 | ieee80211_auth_challenge(sdata, mgmt, len); | |
2229 | /* need another frame */ | |
8d61ffa5 | 2230 | return; |
66e67e41 JB |
2231 | } |
2232 | break; | |
2233 | default: | |
2234 | WARN_ONCE(1, "invalid auth alg %d", | |
2235 | ifmgd->auth_data->algorithm); | |
8d61ffa5 | 2236 | return; |
66e67e41 JB |
2237 | } |
2238 | ||
bdcbd8e0 | 2239 | sdata_info(sdata, "authenticated\n"); |
66e67e41 JB |
2240 | ifmgd->auth_data->done = true; |
2241 | ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC; | |
89afe614 | 2242 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2243 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2244 | |
6b8ece3a JM |
2245 | if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE && |
2246 | ifmgd->auth_data->expected_transaction != 2) { | |
2247 | /* | |
2248 | * Report auth frame to user space for processing since another | |
2249 | * round of Authentication frames is still needed. | |
2250 | */ | |
6ff57cf8 | 2251 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2252 | return; |
6b8ece3a JM |
2253 | } |
2254 | ||
66e67e41 JB |
2255 | /* move station state to auth */ |
2256 | mutex_lock(&sdata->local->sta_mtx); | |
2257 | sta = sta_info_get(sdata, bssid); | |
2258 | if (!sta) { | |
2259 | WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid); | |
2260 | goto out_err; | |
2261 | } | |
2262 | if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) { | |
bdcbd8e0 | 2263 | sdata_info(sdata, "failed moving %pM to auth\n", bssid); |
66e67e41 JB |
2264 | goto out_err; |
2265 | } | |
2266 | mutex_unlock(&sdata->local->sta_mtx); | |
2267 | ||
6ff57cf8 | 2268 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
8d61ffa5 | 2269 | return; |
66e67e41 JB |
2270 | out_err: |
2271 | mutex_unlock(&sdata->local->sta_mtx); | |
2272 | /* ignore frame -- wait for timeout */ | |
66e67e41 JB |
2273 | } |
2274 | ||
dfa1ad29 CO |
2275 | #define case_WLAN(type) \ |
2276 | case WLAN_REASON_##type: return #type | |
2277 | ||
2278 | static const char *ieee80211_get_reason_code_string(u16 reason_code) | |
2279 | { | |
2280 | switch (reason_code) { | |
2281 | case_WLAN(UNSPECIFIED); | |
2282 | case_WLAN(PREV_AUTH_NOT_VALID); | |
2283 | case_WLAN(DEAUTH_LEAVING); | |
2284 | case_WLAN(DISASSOC_DUE_TO_INACTIVITY); | |
2285 | case_WLAN(DISASSOC_AP_BUSY); | |
2286 | case_WLAN(CLASS2_FRAME_FROM_NONAUTH_STA); | |
2287 | case_WLAN(CLASS3_FRAME_FROM_NONASSOC_STA); | |
2288 | case_WLAN(DISASSOC_STA_HAS_LEFT); | |
2289 | case_WLAN(STA_REQ_ASSOC_WITHOUT_AUTH); | |
2290 | case_WLAN(DISASSOC_BAD_POWER); | |
2291 | case_WLAN(DISASSOC_BAD_SUPP_CHAN); | |
2292 | case_WLAN(INVALID_IE); | |
2293 | case_WLAN(MIC_FAILURE); | |
2294 | case_WLAN(4WAY_HANDSHAKE_TIMEOUT); | |
2295 | case_WLAN(GROUP_KEY_HANDSHAKE_TIMEOUT); | |
2296 | case_WLAN(IE_DIFFERENT); | |
2297 | case_WLAN(INVALID_GROUP_CIPHER); | |
2298 | case_WLAN(INVALID_PAIRWISE_CIPHER); | |
2299 | case_WLAN(INVALID_AKMP); | |
2300 | case_WLAN(UNSUPP_RSN_VERSION); | |
2301 | case_WLAN(INVALID_RSN_IE_CAP); | |
2302 | case_WLAN(IEEE8021X_FAILED); | |
2303 | case_WLAN(CIPHER_SUITE_REJECTED); | |
2304 | case_WLAN(DISASSOC_UNSPECIFIED_QOS); | |
2305 | case_WLAN(DISASSOC_QAP_NO_BANDWIDTH); | |
2306 | case_WLAN(DISASSOC_LOW_ACK); | |
2307 | case_WLAN(DISASSOC_QAP_EXCEED_TXOP); | |
2308 | case_WLAN(QSTA_LEAVE_QBSS); | |
2309 | case_WLAN(QSTA_NOT_USE); | |
2310 | case_WLAN(QSTA_REQUIRE_SETUP); | |
2311 | case_WLAN(QSTA_TIMEOUT); | |
2312 | case_WLAN(QSTA_CIPHER_NOT_SUPP); | |
2313 | case_WLAN(MESH_PEER_CANCELED); | |
2314 | case_WLAN(MESH_MAX_PEERS); | |
2315 | case_WLAN(MESH_CONFIG); | |
2316 | case_WLAN(MESH_CLOSE); | |
2317 | case_WLAN(MESH_MAX_RETRIES); | |
2318 | case_WLAN(MESH_CONFIRM_TIMEOUT); | |
2319 | case_WLAN(MESH_INVALID_GTK); | |
2320 | case_WLAN(MESH_INCONSISTENT_PARAM); | |
2321 | case_WLAN(MESH_INVALID_SECURITY); | |
2322 | case_WLAN(MESH_PATH_ERROR); | |
2323 | case_WLAN(MESH_PATH_NOFORWARD); | |
2324 | case_WLAN(MESH_PATH_DEST_UNREACHABLE); | |
2325 | case_WLAN(MAC_EXISTS_IN_MBSS); | |
2326 | case_WLAN(MESH_CHAN_REGULATORY); | |
2327 | case_WLAN(MESH_CHAN); | |
2328 | default: return "<unknown>"; | |
2329 | } | |
2330 | } | |
66e67e41 | 2331 | |
8d61ffa5 JB |
2332 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
2333 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2334 | { |
46900298 | 2335 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
77fdaa12 | 2336 | const u8 *bssid = NULL; |
f0706e82 JB |
2337 | u16 reason_code; |
2338 | ||
8d61ffa5 | 2339 | sdata_assert_lock(sdata); |
66e67e41 | 2340 | |
f4ea83dd | 2341 | if (len < 24 + 2) |
8d61ffa5 | 2342 | return; |
f0706e82 | 2343 | |
66e67e41 | 2344 | if (!ifmgd->associated || |
b203ca39 | 2345 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2346 | return; |
77fdaa12 | 2347 | |
0c1ad2ca | 2348 | bssid = ifmgd->associated->bssid; |
f0706e82 JB |
2349 | |
2350 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
2351 | ||
dfa1ad29 CO |
2352 | sdata_info(sdata, "deauthenticated from %pM (Reason: %u=%s)\n", |
2353 | bssid, reason_code, ieee80211_get_reason_code_string(reason_code)); | |
77fdaa12 | 2354 | |
37ad3888 JB |
2355 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2356 | ||
6ff57cf8 | 2357 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2358 | } |
2359 | ||
2360 | ||
8d61ffa5 JB |
2361 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
2362 | struct ieee80211_mgmt *mgmt, size_t len) | |
f0706e82 | 2363 | { |
46900298 | 2364 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
2365 | u16 reason_code; |
2366 | ||
8d61ffa5 | 2367 | sdata_assert_lock(sdata); |
77fdaa12 | 2368 | |
66e67e41 | 2369 | if (len < 24 + 2) |
8d61ffa5 | 2370 | return; |
77fdaa12 | 2371 | |
66e67e41 | 2372 | if (!ifmgd->associated || |
b203ca39 | 2373 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2374 | return; |
f0706e82 JB |
2375 | |
2376 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
2377 | ||
bdcbd8e0 JB |
2378 | sdata_info(sdata, "disassociated from %pM (Reason: %u)\n", |
2379 | mgmt->sa, reason_code); | |
f0706e82 | 2380 | |
37ad3888 JB |
2381 | ieee80211_set_disassoc(sdata, 0, 0, false, NULL); |
2382 | ||
6ff57cf8 | 2383 | cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); |
f0706e82 JB |
2384 | } |
2385 | ||
c74d084f CL |
2386 | static void ieee80211_get_rates(struct ieee80211_supported_band *sband, |
2387 | u8 *supp_rates, unsigned int supp_rates_len, | |
2388 | u32 *rates, u32 *basic_rates, | |
2389 | bool *have_higher_than_11mbit, | |
2103dec1 SW |
2390 | int *min_rate, int *min_rate_index, |
2391 | int shift, u32 rate_flags) | |
c74d084f CL |
2392 | { |
2393 | int i, j; | |
2394 | ||
2395 | for (i = 0; i < supp_rates_len; i++) { | |
2103dec1 | 2396 | int rate = supp_rates[i] & 0x7f; |
c74d084f CL |
2397 | bool is_basic = !!(supp_rates[i] & 0x80); |
2398 | ||
2103dec1 | 2399 | if ((rate * 5 * (1 << shift)) > 110) |
c74d084f CL |
2400 | *have_higher_than_11mbit = true; |
2401 | ||
2402 | /* | |
2403 | * BSS_MEMBERSHIP_SELECTOR_HT_PHY is defined in 802.11n-2009 | |
2404 | * 7.3.2.2 as a magic value instead of a rate. Hence, skip it. | |
2405 | * | |
2406 | * Note: Even through the membership selector and the basic | |
2407 | * rate flag share the same bit, they are not exactly | |
2408 | * the same. | |
2409 | */ | |
2410 | if (!!(supp_rates[i] & 0x80) && | |
2411 | (supp_rates[i] & 0x7f) == BSS_MEMBERSHIP_SELECTOR_HT_PHY) | |
2412 | continue; | |
2413 | ||
2414 | for (j = 0; j < sband->n_bitrates; j++) { | |
2103dec1 SW |
2415 | struct ieee80211_rate *br; |
2416 | int brate; | |
2417 | ||
2418 | br = &sband->bitrates[j]; | |
2419 | if ((rate_flags & br->flags) != rate_flags) | |
2420 | continue; | |
2421 | ||
2422 | brate = DIV_ROUND_UP(br->bitrate, (1 << shift) * 5); | |
2423 | if (brate == rate) { | |
c74d084f CL |
2424 | *rates |= BIT(j); |
2425 | if (is_basic) | |
2426 | *basic_rates |= BIT(j); | |
2103dec1 SW |
2427 | if ((rate * 5) < *min_rate) { |
2428 | *min_rate = rate * 5; | |
c74d084f CL |
2429 | *min_rate_index = j; |
2430 | } | |
2431 | break; | |
2432 | } | |
2433 | } | |
2434 | } | |
2435 | } | |
f0706e82 | 2436 | |
66e67e41 JB |
2437 | static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata, |
2438 | bool assoc) | |
2439 | { | |
2440 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
2441 | ||
8d61ffa5 | 2442 | sdata_assert_lock(sdata); |
66e67e41 | 2443 | |
66e67e41 JB |
2444 | if (!assoc) { |
2445 | sta_info_destroy_addr(sdata, assoc_data->bss->bssid); | |
2446 | ||
2447 | memset(sdata->u.mgd.bssid, 0, ETH_ALEN); | |
2448 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
028e8da0 | 2449 | sdata->u.mgd.flags = 0; |
34a3740d | 2450 | mutex_lock(&sdata->local->mtx); |
55de908a | 2451 | ieee80211_vif_release_channel(sdata); |
34a3740d | 2452 | mutex_unlock(&sdata->local->mtx); |
66e67e41 JB |
2453 | } |
2454 | ||
2455 | kfree(assoc_data); | |
2456 | sdata->u.mgd.assoc_data = NULL; | |
2457 | } | |
2458 | ||
2459 | static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata, | |
2460 | struct cfg80211_bss *cbss, | |
af6b6374 | 2461 | struct ieee80211_mgmt *mgmt, size_t len) |
f0706e82 | 2462 | { |
46900298 | 2463 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 2464 | struct ieee80211_local *local = sdata->local; |
8318d78a | 2465 | struct ieee80211_supported_band *sband; |
f0706e82 | 2466 | struct sta_info *sta; |
af6b6374 | 2467 | u8 *pos; |
af6b6374 | 2468 | u16 capab_info, aid; |
f0706e82 | 2469 | struct ieee802_11_elems elems; |
bda3933a | 2470 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
35d865af JB |
2471 | const struct cfg80211_bss_ies *bss_ies = NULL; |
2472 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
ae5eb026 | 2473 | u32 changed = 0; |
c74d084f | 2474 | int err; |
35d865af | 2475 | bool ret; |
f0706e82 | 2476 | |
af6b6374 | 2477 | /* AssocResp and ReassocResp have identical structure */ |
f0706e82 | 2478 | |
f0706e82 | 2479 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); |
af6b6374 | 2480 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); |
f0706e82 | 2481 | |
1dd84aa2 | 2482 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
bdcbd8e0 JB |
2483 | sdata_info(sdata, "invalid AID value 0x%x; bits 15:14 not set\n", |
2484 | aid); | |
1dd84aa2 JB |
2485 | aid &= ~(BIT(15) | BIT(14)); |
2486 | ||
05cb9108 JB |
2487 | ifmgd->broken_ap = false; |
2488 | ||
2489 | if (aid == 0 || aid > IEEE80211_MAX_AID) { | |
bdcbd8e0 JB |
2490 | sdata_info(sdata, "invalid AID value %d (out of range), turn off PS\n", |
2491 | aid); | |
05cb9108 JB |
2492 | aid = 0; |
2493 | ifmgd->broken_ap = true; | |
2494 | } | |
2495 | ||
af6b6374 | 2496 | pos = mgmt->u.assoc_resp.variable; |
b2e506bf | 2497 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
af6b6374 | 2498 | |
f0706e82 | 2499 | if (!elems.supp_rates) { |
bdcbd8e0 | 2500 | sdata_info(sdata, "no SuppRates element in AssocResp\n"); |
af6b6374 | 2501 | return false; |
f0706e82 JB |
2502 | } |
2503 | ||
46900298 | 2504 | ifmgd->aid = aid; |
f0706e82 | 2505 | |
35d865af JB |
2506 | /* |
2507 | * Some APs are erroneously not including some information in their | |
2508 | * (re)association response frames. Try to recover by using the data | |
2509 | * from the beacon or probe response. This seems to afflict mobile | |
2510 | * 2G/3G/4G wifi routers, reported models include the "Onda PN51T", | |
2511 | * "Vodafone PocketWiFi 2", "ZTE MF60" and a similar T-Mobile device. | |
2512 | */ | |
2513 | if ((assoc_data->wmm && !elems.wmm_param) || | |
2514 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2515 | (!elems.ht_cap_elem || !elems.ht_operation)) || | |
2516 | (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2517 | (!elems.vht_cap_elem || !elems.vht_operation))) { | |
2518 | const struct cfg80211_bss_ies *ies; | |
2519 | struct ieee802_11_elems bss_elems; | |
2520 | ||
2521 | rcu_read_lock(); | |
2522 | ies = rcu_dereference(cbss->ies); | |
2523 | if (ies) | |
2524 | bss_ies = kmemdup(ies, sizeof(*ies) + ies->len, | |
2525 | GFP_ATOMIC); | |
2526 | rcu_read_unlock(); | |
2527 | if (!bss_ies) | |
2528 | return false; | |
2529 | ||
2530 | ieee802_11_parse_elems(bss_ies->data, bss_ies->len, | |
2531 | false, &bss_elems); | |
2532 | if (assoc_data->wmm && | |
2533 | !elems.wmm_param && bss_elems.wmm_param) { | |
2534 | elems.wmm_param = bss_elems.wmm_param; | |
2535 | sdata_info(sdata, | |
2536 | "AP bug: WMM param missing from AssocResp\n"); | |
2537 | } | |
2538 | ||
2539 | /* | |
2540 | * Also check if we requested HT/VHT, otherwise the AP doesn't | |
2541 | * have to include the IEs in the (re)association response. | |
2542 | */ | |
2543 | if (!elems.ht_cap_elem && bss_elems.ht_cap_elem && | |
2544 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2545 | elems.ht_cap_elem = bss_elems.ht_cap_elem; | |
2546 | sdata_info(sdata, | |
2547 | "AP bug: HT capability missing from AssocResp\n"); | |
2548 | } | |
2549 | if (!elems.ht_operation && bss_elems.ht_operation && | |
2550 | !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) { | |
2551 | elems.ht_operation = bss_elems.ht_operation; | |
2552 | sdata_info(sdata, | |
2553 | "AP bug: HT operation missing from AssocResp\n"); | |
2554 | } | |
2555 | if (!elems.vht_cap_elem && bss_elems.vht_cap_elem && | |
2556 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2557 | elems.vht_cap_elem = bss_elems.vht_cap_elem; | |
2558 | sdata_info(sdata, | |
2559 | "AP bug: VHT capa missing from AssocResp\n"); | |
2560 | } | |
2561 | if (!elems.vht_operation && bss_elems.vht_operation && | |
2562 | !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) { | |
2563 | elems.vht_operation = bss_elems.vht_operation; | |
2564 | sdata_info(sdata, | |
2565 | "AP bug: VHT operation missing from AssocResp\n"); | |
2566 | } | |
2567 | } | |
2568 | ||
30eb1dc2 JB |
2569 | /* |
2570 | * We previously checked these in the beacon/probe response, so | |
2571 | * they should be present here. This is just a safety net. | |
2572 | */ | |
2573 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && | |
2574 | (!elems.wmm_param || !elems.ht_cap_elem || !elems.ht_operation)) { | |
2575 | sdata_info(sdata, | |
35d865af JB |
2576 | "HT AP is missing WMM params or HT capability/operation\n"); |
2577 | ret = false; | |
2578 | goto out; | |
30eb1dc2 JB |
2579 | } |
2580 | ||
2581 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && | |
2582 | (!elems.vht_cap_elem || !elems.vht_operation)) { | |
2583 | sdata_info(sdata, | |
35d865af JB |
2584 | "VHT AP is missing VHT capability/operation\n"); |
2585 | ret = false; | |
2586 | goto out; | |
30eb1dc2 JB |
2587 | } |
2588 | ||
2a33bee2 GE |
2589 | mutex_lock(&sdata->local->sta_mtx); |
2590 | /* | |
2591 | * station info was already allocated and inserted before | |
2592 | * the association and should be available to us | |
2593 | */ | |
7852e361 | 2594 | sta = sta_info_get(sdata, cbss->bssid); |
2a33bee2 GE |
2595 | if (WARN_ON(!sta)) { |
2596 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2597 | ret = false; |
2598 | goto out; | |
77fdaa12 | 2599 | } |
05e5e883 | 2600 | |
55de908a | 2601 | sband = local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)]; |
f709fc69 | 2602 | |
30eb1dc2 | 2603 | /* Set up internal HT/VHT capabilities */ |
a8243b72 | 2604 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_HT)) |
ef96a842 | 2605 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
e1a0c6b3 | 2606 | elems.ht_cap_elem, sta); |
64f68e5d | 2607 | |
818255ea MP |
2608 | if (elems.vht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) |
2609 | ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, | |
4a34215e | 2610 | elems.vht_cap_elem, sta); |
818255ea | 2611 | |
30eb1dc2 JB |
2612 | /* |
2613 | * Some APs, e.g. Netgear WNDR3700, report invalid HT operation data | |
2614 | * in their association response, so ignore that data for our own | |
2615 | * configuration. If it changed since the last beacon, we'll get the | |
2616 | * next beacon and update then. | |
2617 | */ | |
1128958d | 2618 | |
bee7f586 JB |
2619 | /* |
2620 | * If an operating mode notification IE is present, override the | |
2621 | * NSS calculation (that would be done in rate_control_rate_init()) | |
2622 | * and use the # of streams from that element. | |
2623 | */ | |
2624 | if (elems.opmode_notif && | |
2625 | !(*elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF)) { | |
2626 | u8 nss; | |
2627 | ||
2628 | nss = *elems.opmode_notif & IEEE80211_OPMODE_NOTIF_RX_NSS_MASK; | |
2629 | nss >>= IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT; | |
2630 | nss += 1; | |
2631 | sta->sta.rx_nss = nss; | |
2632 | } | |
2633 | ||
4b7679a5 | 2634 | rate_control_rate_init(sta); |
f0706e82 | 2635 | |
46900298 | 2636 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
c2c98fde | 2637 | set_sta_flag(sta, WLAN_STA_MFP); |
5394af4d | 2638 | |
ddf4ac53 | 2639 | if (elems.wmm_param) |
c2c98fde | 2640 | set_sta_flag(sta, WLAN_STA_WME); |
ddf4ac53 | 2641 | |
3e4d40fa | 2642 | err = sta_info_move_state(sta, IEEE80211_STA_ASSOC); |
c8987876 JB |
2643 | if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) |
2644 | err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
2645 | if (err) { | |
bdcbd8e0 JB |
2646 | sdata_info(sdata, |
2647 | "failed to move station %pM to desired state\n", | |
2648 | sta->sta.addr); | |
c8987876 JB |
2649 | WARN_ON(__sta_info_destroy(sta)); |
2650 | mutex_unlock(&sdata->local->sta_mtx); | |
35d865af JB |
2651 | ret = false; |
2652 | goto out; | |
c8987876 JB |
2653 | } |
2654 | ||
7852e361 | 2655 | mutex_unlock(&sdata->local->sta_mtx); |
ddf4ac53 | 2656 | |
f2176d72 JO |
2657 | /* |
2658 | * Always handle WMM once after association regardless | |
2659 | * of the first value the AP uses. Setting -1 here has | |
2660 | * that effect because the AP values is an unsigned | |
2661 | * 4-bit value. | |
2662 | */ | |
2663 | ifmgd->wmm_last_param_set = -1; | |
2664 | ||
095d81ce | 2665 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && elems.wmm_param) |
4ced3f74 | 2666 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, |
60f8b39c | 2667 | elems.wmm_param_len); |
aa837e1d | 2668 | else |
3abead59 JB |
2669 | ieee80211_set_wmm_default(sdata, false); |
2670 | changed |= BSS_CHANGED_QOS; | |
f0706e82 | 2671 | |
60f8b39c JB |
2672 | /* set AID and assoc capability, |
2673 | * ieee80211_set_associated() will tell the driver */ | |
2674 | bss_conf->aid = aid; | |
2675 | bss_conf->assoc_capability = capab_info; | |
0c1ad2ca | 2676 | ieee80211_set_associated(sdata, cbss, changed); |
f0706e82 | 2677 | |
d524215f FF |
2678 | /* |
2679 | * If we're using 4-addr mode, let the AP know that we're | |
2680 | * doing so, so that it can create the STA VLAN on its side | |
2681 | */ | |
2682 | if (ifmgd->use_4addr) | |
2683 | ieee80211_send_4addr_nullfunc(local, sdata); | |
2684 | ||
15b7b062 | 2685 | /* |
b291ba11 JB |
2686 | * Start timer to probe the connection to the AP now. |
2687 | * Also start the timer that will detect beacon loss. | |
15b7b062 | 2688 | */ |
b291ba11 | 2689 | ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); |
d3a910a8 | 2690 | ieee80211_sta_reset_beacon_monitor(sdata); |
15b7b062 | 2691 | |
35d865af JB |
2692 | ret = true; |
2693 | out: | |
2694 | kfree(bss_ies); | |
2695 | return ret; | |
f0706e82 JB |
2696 | } |
2697 | ||
8d61ffa5 JB |
2698 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
2699 | struct ieee80211_mgmt *mgmt, | |
2700 | size_t len) | |
66e67e41 JB |
2701 | { |
2702 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2703 | struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data; | |
2704 | u16 capab_info, status_code, aid; | |
2705 | struct ieee802_11_elems elems; | |
2706 | u8 *pos; | |
2707 | bool reassoc; | |
8d61ffa5 | 2708 | struct cfg80211_bss *bss; |
66e67e41 | 2709 | |
8d61ffa5 | 2710 | sdata_assert_lock(sdata); |
66e67e41 JB |
2711 | |
2712 | if (!assoc_data) | |
8d61ffa5 | 2713 | return; |
b203ca39 | 2714 | if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid)) |
8d61ffa5 | 2715 | return; |
66e67e41 JB |
2716 | |
2717 | /* | |
2718 | * AssocResp and ReassocResp have identical structure, so process both | |
2719 | * of them in this function. | |
2720 | */ | |
2721 | ||
2722 | if (len < 24 + 6) | |
8d61ffa5 | 2723 | return; |
66e67e41 JB |
2724 | |
2725 | reassoc = ieee80211_is_reassoc_req(mgmt->frame_control); | |
2726 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2727 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2728 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
2729 | ||
bdcbd8e0 JB |
2730 | sdata_info(sdata, |
2731 | "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n", | |
2732 | reassoc ? "Rea" : "A", mgmt->sa, | |
2733 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); | |
66e67e41 JB |
2734 | |
2735 | pos = mgmt->u.assoc_resp.variable; | |
b2e506bf | 2736 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), false, &elems); |
66e67e41 JB |
2737 | |
2738 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
79ba1d89 JB |
2739 | elems.timeout_int && |
2740 | elems.timeout_int->type == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
66e67e41 | 2741 | u32 tu, ms; |
79ba1d89 | 2742 | tu = le32_to_cpu(elems.timeout_int->value); |
66e67e41 | 2743 | ms = tu * 1024 / 1000; |
bdcbd8e0 JB |
2744 | sdata_info(sdata, |
2745 | "%pM rejected association temporarily; comeback duration %u TU (%u ms)\n", | |
2746 | mgmt->sa, tu, ms); | |
66e67e41 | 2747 | assoc_data->timeout = jiffies + msecs_to_jiffies(ms); |
89afe614 | 2748 | assoc_data->timeout_started = true; |
66e67e41 | 2749 | if (ms > IEEE80211_ASSOC_TIMEOUT) |
8d61ffa5 JB |
2750 | run_again(sdata, assoc_data->timeout); |
2751 | return; | |
66e67e41 JB |
2752 | } |
2753 | ||
8d61ffa5 | 2754 | bss = assoc_data->bss; |
66e67e41 JB |
2755 | |
2756 | if (status_code != WLAN_STATUS_SUCCESS) { | |
bdcbd8e0 JB |
2757 | sdata_info(sdata, "%pM denied association (code=%d)\n", |
2758 | mgmt->sa, status_code); | |
66e67e41 JB |
2759 | ieee80211_destroy_assoc_data(sdata, false); |
2760 | } else { | |
8d61ffa5 | 2761 | if (!ieee80211_assoc_success(sdata, bss, mgmt, len)) { |
66e67e41 | 2762 | /* oops -- internal error -- send timeout for now */ |
10a9109f | 2763 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa | 2764 | cfg80211_assoc_timeout(sdata->dev, bss); |
8d61ffa5 | 2765 | return; |
66e67e41 | 2766 | } |
635d999f | 2767 | sdata_info(sdata, "associated\n"); |
79ebfb85 JB |
2768 | |
2769 | /* | |
2770 | * destroy assoc_data afterwards, as otherwise an idle | |
2771 | * recalc after assoc_data is NULL but before associated | |
2772 | * is set can cause the interface to go idle | |
2773 | */ | |
2774 | ieee80211_destroy_assoc_data(sdata, true); | |
66e67e41 JB |
2775 | } |
2776 | ||
6ff57cf8 | 2777 | cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); |
66e67e41 | 2778 | } |
8e3c1b77 | 2779 | |
98c8fccf | 2780 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
8e3c1b77 | 2781 | struct ieee80211_mgmt *mgmt, size_t len, |
98c8fccf | 2782 | struct ieee80211_rx_status *rx_status, |
d45c4172 | 2783 | struct ieee802_11_elems *elems) |
98c8fccf JB |
2784 | { |
2785 | struct ieee80211_local *local = sdata->local; | |
c2b13452 | 2786 | struct ieee80211_bss *bss; |
98c8fccf | 2787 | struct ieee80211_channel *channel; |
56007a02 | 2788 | |
8d61ffa5 | 2789 | sdata_assert_lock(sdata); |
b4f286a1 | 2790 | |
3afc2167 EG |
2791 | channel = ieee80211_get_channel(local->hw.wiphy, rx_status->freq); |
2792 | if (!channel) | |
98c8fccf JB |
2793 | return; |
2794 | ||
98c8fccf | 2795 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
d45c4172 | 2796 | channel); |
817cee76 | 2797 | if (bss) { |
817cee76 | 2798 | sdata->vif.bss_conf.beacon_rate = bss->beacon_rate; |
d2722f8b | 2799 | ieee80211_rx_bss_put(local, bss); |
817cee76 | 2800 | } |
f0706e82 JB |
2801 | } |
2802 | ||
2803 | ||
f698d856 | 2804 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
af6b6374 | 2805 | struct sk_buff *skb) |
f0706e82 | 2806 | { |
af6b6374 | 2807 | struct ieee80211_mgmt *mgmt = (void *)skb->data; |
15b7b062 | 2808 | struct ieee80211_if_managed *ifmgd; |
af6b6374 JB |
2809 | struct ieee80211_rx_status *rx_status = (void *) skb->cb; |
2810 | size_t baselen, len = skb->len; | |
ae6a44e3 EK |
2811 | struct ieee802_11_elems elems; |
2812 | ||
15b7b062 KV |
2813 | ifmgd = &sdata->u.mgd; |
2814 | ||
8d61ffa5 | 2815 | sdata_assert_lock(sdata); |
77fdaa12 | 2816 | |
b203ca39 | 2817 | if (!ether_addr_equal(mgmt->da, sdata->vif.addr)) |
8e7cdbb6 TW |
2818 | return; /* ignore ProbeResp to foreign address */ |
2819 | ||
ae6a44e3 EK |
2820 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2821 | if (baselen > len) | |
2822 | return; | |
2823 | ||
2824 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
b2e506bf | 2825 | false, &elems); |
ae6a44e3 | 2826 | |
d45c4172 | 2827 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
9859b81e | 2828 | |
77fdaa12 | 2829 | if (ifmgd->associated && |
b203ca39 | 2830 | ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
4e5ff376 | 2831 | ieee80211_reset_ap_probe(sdata); |
66e67e41 JB |
2832 | |
2833 | if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies && | |
b203ca39 | 2834 | ether_addr_equal(mgmt->bssid, ifmgd->auth_data->bss->bssid)) { |
66e67e41 | 2835 | /* got probe response, continue with auth */ |
bdcbd8e0 | 2836 | sdata_info(sdata, "direct probe responded\n"); |
66e67e41 JB |
2837 | ifmgd->auth_data->tries = 0; |
2838 | ifmgd->auth_data->timeout = jiffies; | |
89afe614 | 2839 | ifmgd->auth_data->timeout_started = true; |
8d61ffa5 | 2840 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 2841 | } |
f0706e82 JB |
2842 | } |
2843 | ||
d91f36db JB |
2844 | /* |
2845 | * This is the canonical list of information elements we care about, | |
2846 | * the filter code also gives us all changes to the Microsoft OUI | |
2847 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
2848 | * | |
2849 | * We implement beacon filtering in software since that means we can | |
2850 | * avoid processing the frame here and in cfg80211, and userspace | |
2851 | * will not be able to tell whether the hardware supports it or not. | |
2852 | * | |
2853 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
2854 | * add items it requires. It also needs to be able to tell us to | |
2855 | * look out for other vendor IEs. | |
2856 | */ | |
2857 | static const u64 care_about_ies = | |
1d4df3a5 JB |
2858 | (1ULL << WLAN_EID_COUNTRY) | |
2859 | (1ULL << WLAN_EID_ERP_INFO) | | |
2860 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
2861 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
2862 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
074d46d1 | 2863 | (1ULL << WLAN_EID_HT_OPERATION); |
d91f36db | 2864 | |
8d61ffa5 JB |
2865 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
2866 | struct ieee80211_mgmt *mgmt, size_t len, | |
2867 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2868 | { |
d91f36db | 2869 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
17e4ec14 | 2870 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 JB |
2871 | size_t baselen; |
2872 | struct ieee802_11_elems elems; | |
f698d856 | 2873 | struct ieee80211_local *local = sdata->local; |
55de908a JB |
2874 | struct ieee80211_chanctx_conf *chanctx_conf; |
2875 | struct ieee80211_channel *chan; | |
bee7f586 | 2876 | struct sta_info *sta; |
471b3efd | 2877 | u32 changed = 0; |
f87ad637 | 2878 | bool erp_valid; |
7a5158ef | 2879 | u8 erp_value = 0; |
d91f36db | 2880 | u32 ncrc; |
77fdaa12 | 2881 | u8 *bssid; |
8d61ffa5 | 2882 | u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
77fdaa12 | 2883 | |
8d61ffa5 | 2884 | sdata_assert_lock(sdata); |
f0706e82 | 2885 | |
ae6a44e3 EK |
2886 | /* Process beacon from the current BSS */ |
2887 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2888 | if (baselen > len) | |
8d61ffa5 | 2889 | return; |
ae6a44e3 | 2890 | |
55de908a JB |
2891 | rcu_read_lock(); |
2892 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
2893 | if (!chanctx_conf) { | |
2894 | rcu_read_unlock(); | |
8d61ffa5 | 2895 | return; |
55de908a JB |
2896 | } |
2897 | ||
4bf88530 | 2898 | if (rx_status->freq != chanctx_conf->def.chan->center_freq) { |
55de908a | 2899 | rcu_read_unlock(); |
8d61ffa5 | 2900 | return; |
55de908a | 2901 | } |
4bf88530 | 2902 | chan = chanctx_conf->def.chan; |
55de908a | 2903 | rcu_read_unlock(); |
f0706e82 | 2904 | |
c65dd147 | 2905 | if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon && |
b203ca39 | 2906 | ether_addr_equal(mgmt->bssid, ifmgd->assoc_data->bss->bssid)) { |
66e67e41 | 2907 | ieee802_11_parse_elems(mgmt->u.beacon.variable, |
b2e506bf | 2908 | len - baselen, false, &elems); |
77fdaa12 | 2909 | |
d45c4172 | 2910 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
482a9c74 AB |
2911 | if (elems.tim && !elems.parse_error) { |
2912 | const struct ieee80211_tim_ie *tim_ie = elems.tim; | |
2913 | ifmgd->dtim_period = tim_ie->dtim_period; | |
2914 | } | |
989c6505 | 2915 | ifmgd->have_beacon = true; |
c65dd147 | 2916 | ifmgd->assoc_data->need_beacon = false; |
ef429dad JB |
2917 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { |
2918 | sdata->vif.bss_conf.sync_tsf = | |
2919 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
2920 | sdata->vif.bss_conf.sync_device_ts = | |
2921 | rx_status->device_timestamp; | |
2922 | if (elems.tim) | |
2923 | sdata->vif.bss_conf.sync_dtim_count = | |
2924 | elems.tim->dtim_count; | |
2925 | else | |
2926 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
2927 | } | |
66e67e41 JB |
2928 | /* continue assoc process */ |
2929 | ifmgd->assoc_data->timeout = jiffies; | |
89afe614 | 2930 | ifmgd->assoc_data->timeout_started = true; |
8d61ffa5 JB |
2931 | run_again(sdata, ifmgd->assoc_data->timeout); |
2932 | return; | |
66e67e41 | 2933 | } |
77fdaa12 | 2934 | |
66e67e41 | 2935 | if (!ifmgd->associated || |
b203ca39 | 2936 | !ether_addr_equal(mgmt->bssid, ifmgd->associated->bssid)) |
8d61ffa5 | 2937 | return; |
66e67e41 | 2938 | bssid = ifmgd->associated->bssid; |
f0706e82 | 2939 | |
17e4ec14 JM |
2940 | /* Track average RSSI from the Beacon frames of the current AP */ |
2941 | ifmgd->last_beacon_signal = rx_status->signal; | |
2942 | if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { | |
2943 | ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; | |
3ba06c6f | 2944 | ifmgd->ave_beacon_signal = rx_status->signal * 16; |
17e4ec14 | 2945 | ifmgd->last_cqm_event_signal = 0; |
391a200a | 2946 | ifmgd->count_beacon_signal = 1; |
615f7b9b | 2947 | ifmgd->last_ave_beacon_signal = 0; |
17e4ec14 JM |
2948 | } else { |
2949 | ifmgd->ave_beacon_signal = | |
2950 | (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + | |
2951 | (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * | |
2952 | ifmgd->ave_beacon_signal) / 16; | |
391a200a | 2953 | ifmgd->count_beacon_signal++; |
17e4ec14 | 2954 | } |
615f7b9b MV |
2955 | |
2956 | if (ifmgd->rssi_min_thold != ifmgd->rssi_max_thold && | |
2957 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { | |
2958 | int sig = ifmgd->ave_beacon_signal; | |
2959 | int last_sig = ifmgd->last_ave_beacon_signal; | |
2960 | ||
2961 | /* | |
2962 | * if signal crosses either of the boundaries, invoke callback | |
2963 | * with appropriate parameters | |
2964 | */ | |
2965 | if (sig > ifmgd->rssi_max_thold && | |
2966 | (last_sig <= ifmgd->rssi_min_thold || last_sig == 0)) { | |
2967 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2968 | drv_rssi_callback(local, sdata, RSSI_EVENT_HIGH); |
615f7b9b MV |
2969 | } else if (sig < ifmgd->rssi_min_thold && |
2970 | (last_sig >= ifmgd->rssi_max_thold || | |
2971 | last_sig == 0)) { | |
2972 | ifmgd->last_ave_beacon_signal = sig; | |
887da917 | 2973 | drv_rssi_callback(local, sdata, RSSI_EVENT_LOW); |
615f7b9b MV |
2974 | } |
2975 | } | |
2976 | ||
17e4ec14 | 2977 | if (bss_conf->cqm_rssi_thold && |
391a200a | 2978 | ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && |
ea086359 | 2979 | !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) { |
17e4ec14 JM |
2980 | int sig = ifmgd->ave_beacon_signal / 16; |
2981 | int last_event = ifmgd->last_cqm_event_signal; | |
2982 | int thold = bss_conf->cqm_rssi_thold; | |
2983 | int hyst = bss_conf->cqm_rssi_hyst; | |
2984 | if (sig < thold && | |
2985 | (last_event == 0 || sig < last_event - hyst)) { | |
2986 | ifmgd->last_cqm_event_signal = sig; | |
2987 | ieee80211_cqm_rssi_notify( | |
2988 | &sdata->vif, | |
2989 | NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, | |
2990 | GFP_KERNEL); | |
2991 | } else if (sig > thold && | |
2992 | (last_event == 0 || sig > last_event + hyst)) { | |
2993 | ifmgd->last_cqm_event_signal = sig; | |
2994 | ieee80211_cqm_rssi_notify( | |
2995 | &sdata->vif, | |
2996 | NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, | |
2997 | GFP_KERNEL); | |
2998 | } | |
2999 | } | |
3000 | ||
392b9ffb | 3001 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { |
bdcbd8e0 | 3002 | mlme_dbg_ratelimited(sdata, |
112c31f0 | 3003 | "cancelling AP probe due to a received beacon\n"); |
392b9ffb | 3004 | ieee80211_reset_ap_probe(sdata); |
92778180 JM |
3005 | } |
3006 | ||
b291ba11 JB |
3007 | /* |
3008 | * Push the beacon loss detection into the future since | |
3009 | * we are processing a beacon from the AP just now. | |
3010 | */ | |
d3a910a8 | 3011 | ieee80211_sta_reset_beacon_monitor(sdata); |
b291ba11 | 3012 | |
d91f36db JB |
3013 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
3014 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
b2e506bf | 3015 | len - baselen, false, &elems, |
d91f36db JB |
3016 | care_about_ies, ncrc); |
3017 | ||
25c9c875 | 3018 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
f87ad637 RR |
3019 | bool directed_tim = ieee80211_check_tim(elems.tim, |
3020 | elems.tim_len, | |
3021 | ifmgd->aid); | |
1fb3606b | 3022 | if (directed_tim) { |
572e0012 | 3023 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
70b12f26 RW |
3024 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
3025 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
3026 | ieee80211_hw_config(local, | |
3027 | IEEE80211_CONF_CHANGE_PS); | |
3028 | } | |
572e0012 | 3029 | ieee80211_send_nullfunc(local, sdata, 0); |
6f0756a3 | 3030 | } else if (!local->pspolling && sdata->u.mgd.powersave) { |
572e0012 KV |
3031 | local->pspolling = true; |
3032 | ||
3033 | /* | |
3034 | * Here is assumed that the driver will be | |
3035 | * able to send ps-poll frame and receive a | |
3036 | * response even though power save mode is | |
3037 | * enabled, but some drivers might require | |
3038 | * to disable power save here. This needs | |
3039 | * to be investigated. | |
3040 | */ | |
3041 | ieee80211_send_pspoll(local, sdata); | |
3042 | } | |
a97b77b9 VN |
3043 | } |
3044 | } | |
7a5158ef | 3045 | |
488dd7b5 | 3046 | if (sdata->vif.p2p) { |
67baf663 | 3047 | struct ieee80211_p2p_noa_attr noa = {}; |
488dd7b5 JB |
3048 | int ret; |
3049 | ||
3050 | ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable, | |
3051 | len - baselen, | |
3052 | IEEE80211_P2P_ATTR_ABSENCE_NOTICE, | |
934457ee | 3053 | (u8 *) &noa, sizeof(noa)); |
67baf663 JD |
3054 | if (ret >= 2) { |
3055 | if (sdata->u.mgd.p2p_noa_index != noa.index) { | |
3056 | /* valid noa_attr and index changed */ | |
3057 | sdata->u.mgd.p2p_noa_index = noa.index; | |
3058 | memcpy(&bss_conf->p2p_noa_attr, &noa, sizeof(noa)); | |
3059 | changed |= BSS_CHANGED_P2P_PS; | |
3060 | /* | |
3061 | * make sure we update all information, the CRC | |
3062 | * mechanism doesn't look at P2P attributes. | |
3063 | */ | |
3064 | ifmgd->beacon_crc_valid = false; | |
3065 | } | |
3066 | } else if (sdata->u.mgd.p2p_noa_index != -1) { | |
3067 | /* noa_attr not found and we had valid noa_attr before */ | |
3068 | sdata->u.mgd.p2p_noa_index = -1; | |
3069 | memset(&bss_conf->p2p_noa_attr, 0, sizeof(bss_conf->p2p_noa_attr)); | |
488dd7b5 | 3070 | changed |= BSS_CHANGED_P2P_PS; |
488dd7b5 JB |
3071 | ifmgd->beacon_crc_valid = false; |
3072 | } | |
3073 | } | |
3074 | ||
d8ec4433 | 3075 | if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) |
8d61ffa5 | 3076 | return; |
30196673 | 3077 | ifmgd->beacon_crc = ncrc; |
d8ec4433 | 3078 | ifmgd->beacon_crc_valid = true; |
30196673 | 3079 | |
d45c4172 | 3080 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems); |
7d25745d | 3081 | |
d70b7616 JB |
3082 | ieee80211_sta_process_chanswitch(sdata, rx_status->mactime, |
3083 | &elems, true); | |
3084 | ||
095d81ce JB |
3085 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_WMM) && |
3086 | ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, | |
7d25745d JB |
3087 | elems.wmm_param_len)) |
3088 | changed |= BSS_CHANGED_QOS; | |
3089 | ||
c65dd147 EG |
3090 | /* |
3091 | * If we haven't had a beacon before, tell the driver about the | |
ef429dad | 3092 | * DTIM period (and beacon timing if desired) now. |
c65dd147 | 3093 | */ |
989c6505 | 3094 | if (!ifmgd->have_beacon) { |
c65dd147 EG |
3095 | /* a few bogus AP send dtim_period = 0 or no TIM IE */ |
3096 | if (elems.tim) | |
3097 | bss_conf->dtim_period = elems.tim->dtim_period ?: 1; | |
3098 | else | |
3099 | bss_conf->dtim_period = 1; | |
ef429dad JB |
3100 | |
3101 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
3102 | sdata->vif.bss_conf.sync_tsf = | |
3103 | le64_to_cpu(mgmt->u.beacon.timestamp); | |
3104 | sdata->vif.bss_conf.sync_device_ts = | |
3105 | rx_status->device_timestamp; | |
3106 | if (elems.tim) | |
3107 | sdata->vif.bss_conf.sync_dtim_count = | |
3108 | elems.tim->dtim_count; | |
3109 | else | |
3110 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3111 | } | |
3112 | ||
989c6505 AB |
3113 | changed |= BSS_CHANGED_BEACON_INFO; |
3114 | ifmgd->have_beacon = true; | |
482a9c74 AB |
3115 | |
3116 | mutex_lock(&local->iflist_mtx); | |
3117 | ieee80211_recalc_ps(local, -1); | |
3118 | mutex_unlock(&local->iflist_mtx); | |
3119 | ||
ce857888 | 3120 | ieee80211_recalc_ps_vif(sdata); |
c65dd147 EG |
3121 | } |
3122 | ||
1946bed9 | 3123 | if (elems.erp_info) { |
7a5158ef JB |
3124 | erp_valid = true; |
3125 | erp_value = elems.erp_info[0]; | |
3126 | } else { | |
3127 | erp_valid = false; | |
50c4afb9 | 3128 | } |
7a5158ef JB |
3129 | changed |= ieee80211_handle_bss_capability(sdata, |
3130 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
3131 | erp_valid, erp_value); | |
f0706e82 | 3132 | |
1128958d | 3133 | mutex_lock(&local->sta_mtx); |
bee7f586 JB |
3134 | sta = sta_info_get(sdata, bssid); |
3135 | ||
30eb1dc2 JB |
3136 | if (ieee80211_config_bw(sdata, sta, elems.ht_operation, |
3137 | elems.vht_operation, bssid, &changed)) { | |
3138 | mutex_unlock(&local->sta_mtx); | |
3139 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
3140 | WLAN_REASON_DEAUTH_LEAVING, | |
3141 | true, deauth_buf); | |
6ff57cf8 JB |
3142 | cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, |
3143 | sizeof(deauth_buf)); | |
8d61ffa5 | 3144 | return; |
30eb1dc2 | 3145 | } |
bee7f586 JB |
3146 | |
3147 | if (sta && elems.opmode_notif) | |
3148 | ieee80211_vht_handle_opmode(sdata, sta, *elems.opmode_notif, | |
3149 | rx_status->band, true); | |
1128958d | 3150 | mutex_unlock(&local->sta_mtx); |
d3c990fb | 3151 | |
04b7b2ff JB |
3152 | if (elems.country_elem && elems.pwr_constr_elem && |
3153 | mgmt->u.probe_resp.capab_info & | |
3154 | cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
1ea6f9c0 JB |
3155 | changed |= ieee80211_handle_pwr_constr(sdata, chan, |
3156 | elems.country_elem, | |
3157 | elems.country_elem_len, | |
3158 | elems.pwr_constr_elem); | |
3f2355cb | 3159 | |
471b3efd | 3160 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
3161 | } |
3162 | ||
1fa57d01 JB |
3163 | void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
3164 | struct sk_buff *skb) | |
f0706e82 JB |
3165 | { |
3166 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
3167 | struct ieee80211_mgmt *mgmt; |
3168 | u16 fc; | |
1b3a2e49 JB |
3169 | struct ieee802_11_elems elems; |
3170 | int ies_len; | |
f0706e82 | 3171 | |
f0706e82 JB |
3172 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
3173 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3174 | fc = le16_to_cpu(mgmt->frame_control); | |
3175 | ||
8d61ffa5 | 3176 | sdata_lock(sdata); |
77fdaa12 | 3177 | |
66e67e41 JB |
3178 | switch (fc & IEEE80211_FCTL_STYPE) { |
3179 | case IEEE80211_STYPE_BEACON: | |
8d61ffa5 | 3180 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
66e67e41 JB |
3181 | break; |
3182 | case IEEE80211_STYPE_PROBE_RESP: | |
3183 | ieee80211_rx_mgmt_probe_resp(sdata, skb); | |
3184 | break; | |
3185 | case IEEE80211_STYPE_AUTH: | |
8d61ffa5 | 3186 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); |
66e67e41 JB |
3187 | break; |
3188 | case IEEE80211_STYPE_DEAUTH: | |
8d61ffa5 | 3189 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); |
66e67e41 JB |
3190 | break; |
3191 | case IEEE80211_STYPE_DISASSOC: | |
8d61ffa5 | 3192 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); |
66e67e41 JB |
3193 | break; |
3194 | case IEEE80211_STYPE_ASSOC_RESP: | |
3195 | case IEEE80211_STYPE_REASSOC_RESP: | |
8d61ffa5 | 3196 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len); |
66e67e41 JB |
3197 | break; |
3198 | case IEEE80211_STYPE_ACTION: | |
37799e52 | 3199 | if (mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) { |
1b3a2e49 JB |
3200 | ies_len = skb->len - |
3201 | offsetof(struct ieee80211_mgmt, | |
3202 | u.action.u.chan_switch.variable); | |
37799e52 JB |
3203 | |
3204 | if (ies_len < 0) | |
3205 | break; | |
3206 | ||
3207 | ieee802_11_parse_elems( | |
3208 | mgmt->u.action.u.chan_switch.variable, | |
b2e506bf | 3209 | ies_len, true, &elems); |
37799e52 JB |
3210 | |
3211 | if (elems.parse_error) | |
3212 | break; | |
3213 | ||
1b3a2e49 JB |
3214 | ieee80211_sta_process_chanswitch(sdata, |
3215 | rx_status->mactime, | |
04a161f4 | 3216 | &elems, false); |
1b3a2e49 JB |
3217 | } else if (mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) { |
3218 | ies_len = skb->len - | |
3219 | offsetof(struct ieee80211_mgmt, | |
3220 | u.action.u.ext_chan_switch.variable); | |
3221 | ||
3222 | if (ies_len < 0) | |
3223 | break; | |
3224 | ||
3225 | ieee802_11_parse_elems( | |
3226 | mgmt->u.action.u.ext_chan_switch.variable, | |
b2e506bf | 3227 | ies_len, true, &elems); |
1b3a2e49 JB |
3228 | |
3229 | if (elems.parse_error) | |
3230 | break; | |
3231 | ||
3232 | /* for the handling code pretend this was also an IE */ | |
3233 | elems.ext_chansw_ie = | |
3234 | &mgmt->u.action.u.ext_chan_switch.data; | |
3235 | ||
66e67e41 | 3236 | ieee80211_sta_process_chanswitch(sdata, |
37799e52 | 3237 | rx_status->mactime, |
04a161f4 | 3238 | &elems, false); |
77fdaa12 | 3239 | } |
37799e52 | 3240 | break; |
77fdaa12 | 3241 | } |
8d61ffa5 | 3242 | sdata_unlock(sdata); |
f0706e82 JB |
3243 | } |
3244 | ||
9c6bd790 | 3245 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 3246 | { |
60f8b39c JB |
3247 | struct ieee80211_sub_if_data *sdata = |
3248 | (struct ieee80211_sub_if_data *) data; | |
5bb644a0 | 3249 | |
9b7d72c1 | 3250 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
f0706e82 JB |
3251 | } |
3252 | ||
04ac3c0e | 3253 | static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, |
6b684db1 | 3254 | u8 *bssid, u8 reason, bool tx) |
04ac3c0e | 3255 | { |
6ae16775 | 3256 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
04ac3c0e | 3257 | |
37ad3888 | 3258 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, |
6b684db1 | 3259 | tx, frame_buf); |
37ad3888 | 3260 | |
6ff57cf8 JB |
3261 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
3262 | IEEE80211_DEAUTH_FRAME_LEN); | |
04ac3c0e FF |
3263 | } |
3264 | ||
66e67e41 JB |
3265 | static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) |
3266 | { | |
3267 | struct ieee80211_local *local = sdata->local; | |
3268 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3269 | struct ieee80211_mgd_auth_data *auth_data = ifmgd->auth_data; | |
1672c0e3 | 3270 | u32 tx_flags = 0; |
66e67e41 | 3271 | |
8d61ffa5 | 3272 | sdata_assert_lock(sdata); |
66e67e41 JB |
3273 | |
3274 | if (WARN_ON_ONCE(!auth_data)) | |
3275 | return -EINVAL; | |
3276 | ||
66e67e41 JB |
3277 | auth_data->tries++; |
3278 | ||
3279 | if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) { | |
bdcbd8e0 JB |
3280 | sdata_info(sdata, "authentication with %pM timed out\n", |
3281 | auth_data->bss->bssid); | |
66e67e41 JB |
3282 | |
3283 | /* | |
3284 | * Most likely AP is not in the range so remove the | |
3285 | * bss struct for that AP. | |
3286 | */ | |
3287 | cfg80211_unlink_bss(local->hw.wiphy, auth_data->bss); | |
3288 | ||
3289 | return -ETIMEDOUT; | |
3290 | } | |
3291 | ||
a1845fc7 JB |
3292 | drv_mgd_prepare_tx(local, sdata); |
3293 | ||
66e67e41 | 3294 | if (auth_data->bss->proberesp_ies) { |
6b8ece3a JM |
3295 | u16 trans = 1; |
3296 | u16 status = 0; | |
3297 | ||
bdcbd8e0 JB |
3298 | sdata_info(sdata, "send auth to %pM (try %d/%d)\n", |
3299 | auth_data->bss->bssid, auth_data->tries, | |
3300 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 JB |
3301 | |
3302 | auth_data->expected_transaction = 2; | |
6b8ece3a JM |
3303 | |
3304 | if (auth_data->algorithm == WLAN_AUTH_SAE) { | |
3305 | trans = auth_data->sae_trans; | |
3306 | status = auth_data->sae_status; | |
3307 | auth_data->expected_transaction = trans; | |
3308 | } | |
3309 | ||
6211dd12 SG |
3310 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
3311 | tx_flags = IEEE80211_TX_CTL_REQ_TX_STATUS | | |
3312 | IEEE80211_TX_INTFL_MLME_CONN_TX; | |
3313 | ||
6b8ece3a JM |
3314 | ieee80211_send_auth(sdata, trans, auth_data->algorithm, status, |
3315 | auth_data->data, auth_data->data_len, | |
66e67e41 | 3316 | auth_data->bss->bssid, |
1672c0e3 JB |
3317 | auth_data->bss->bssid, NULL, 0, 0, |
3318 | tx_flags); | |
66e67e41 JB |
3319 | } else { |
3320 | const u8 *ssidie; | |
3321 | ||
bdcbd8e0 JB |
3322 | sdata_info(sdata, "direct probe to %pM (try %d/%i)\n", |
3323 | auth_data->bss->bssid, auth_data->tries, | |
3324 | IEEE80211_AUTH_MAX_TRIES); | |
66e67e41 | 3325 | |
9caf0364 | 3326 | rcu_read_lock(); |
66e67e41 | 3327 | ssidie = ieee80211_bss_get_ie(auth_data->bss, WLAN_EID_SSID); |
9caf0364 JB |
3328 | if (!ssidie) { |
3329 | rcu_read_unlock(); | |
66e67e41 | 3330 | return -EINVAL; |
9caf0364 | 3331 | } |
66e67e41 JB |
3332 | /* |
3333 | * Direct probe is sent to broadcast address as some APs | |
3334 | * will not answer to direct packet in unassociated state. | |
3335 | */ | |
3336 | ieee80211_send_probe_req(sdata, NULL, ssidie + 2, ssidie[1], | |
6211dd12 | 3337 | NULL, 0, (u32) -1, true, 0, |
55de908a | 3338 | auth_data->bss->channel, false); |
9caf0364 | 3339 | rcu_read_unlock(); |
66e67e41 JB |
3340 | } |
3341 | ||
6211dd12 | 3342 | if (tx_flags == 0) { |
1672c0e3 | 3343 | auth_data->timeout = jiffies + IEEE80211_AUTH_TIMEOUT; |
cb236d2d | 3344 | auth_data->timeout_started = true; |
8d61ffa5 | 3345 | run_again(sdata, auth_data->timeout); |
89afe614 | 3346 | } else { |
cb236d2d JB |
3347 | auth_data->timeout = |
3348 | round_jiffies_up(jiffies + IEEE80211_AUTH_TIMEOUT_LONG); | |
3349 | auth_data->timeout_started = true; | |
3350 | run_again(sdata, auth_data->timeout); | |
1672c0e3 | 3351 | } |
66e67e41 JB |
3352 | |
3353 | return 0; | |
3354 | } | |
3355 | ||
3356 | static int ieee80211_do_assoc(struct ieee80211_sub_if_data *sdata) | |
3357 | { | |
3358 | struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data; | |
3359 | struct ieee80211_local *local = sdata->local; | |
3360 | ||
8d61ffa5 | 3361 | sdata_assert_lock(sdata); |
66e67e41 | 3362 | |
66e67e41 JB |
3363 | assoc_data->tries++; |
3364 | if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) { | |
bdcbd8e0 JB |
3365 | sdata_info(sdata, "association with %pM timed out\n", |
3366 | assoc_data->bss->bssid); | |
66e67e41 JB |
3367 | |
3368 | /* | |
3369 | * Most likely AP is not in the range so remove the | |
3370 | * bss struct for that AP. | |
3371 | */ | |
3372 | cfg80211_unlink_bss(local->hw.wiphy, assoc_data->bss); | |
3373 | ||
3374 | return -ETIMEDOUT; | |
3375 | } | |
3376 | ||
bdcbd8e0 JB |
3377 | sdata_info(sdata, "associate with %pM (try %d/%d)\n", |
3378 | assoc_data->bss->bssid, assoc_data->tries, | |
3379 | IEEE80211_ASSOC_MAX_TRIES); | |
66e67e41 JB |
3380 | ieee80211_send_assoc(sdata); |
3381 | ||
1672c0e3 JB |
3382 | if (!(local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) { |
3383 | assoc_data->timeout = jiffies + IEEE80211_ASSOC_TIMEOUT; | |
89afe614 | 3384 | assoc_data->timeout_started = true; |
8d61ffa5 | 3385 | run_again(sdata, assoc_data->timeout); |
89afe614 | 3386 | } else { |
cb236d2d JB |
3387 | assoc_data->timeout = |
3388 | round_jiffies_up(jiffies + | |
3389 | IEEE80211_ASSOC_TIMEOUT_LONG); | |
3390 | assoc_data->timeout_started = true; | |
3391 | run_again(sdata, assoc_data->timeout); | |
1672c0e3 | 3392 | } |
66e67e41 JB |
3393 | |
3394 | return 0; | |
3395 | } | |
3396 | ||
1672c0e3 JB |
3397 | void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, |
3398 | __le16 fc, bool acked) | |
3399 | { | |
3400 | struct ieee80211_local *local = sdata->local; | |
3401 | ||
3402 | sdata->u.mgd.status_fc = fc; | |
3403 | sdata->u.mgd.status_acked = acked; | |
3404 | sdata->u.mgd.status_received = true; | |
3405 | ||
3406 | ieee80211_queue_work(&local->hw, &sdata->work); | |
3407 | } | |
3408 | ||
1fa57d01 | 3409 | void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) |
9c6bd790 | 3410 | { |
9c6bd790 | 3411 | struct ieee80211_local *local = sdata->local; |
1fa57d01 | 3412 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 3413 | |
8d61ffa5 | 3414 | sdata_lock(sdata); |
77fdaa12 | 3415 | |
1672c0e3 JB |
3416 | if (ifmgd->status_received) { |
3417 | __le16 fc = ifmgd->status_fc; | |
3418 | bool status_acked = ifmgd->status_acked; | |
3419 | ||
3420 | ifmgd->status_received = false; | |
3421 | if (ifmgd->auth_data && | |
3422 | (ieee80211_is_probe_req(fc) || ieee80211_is_auth(fc))) { | |
3423 | if (status_acked) { | |
3424 | ifmgd->auth_data->timeout = | |
3425 | jiffies + IEEE80211_AUTH_TIMEOUT_SHORT; | |
8d61ffa5 | 3426 | run_again(sdata, ifmgd->auth_data->timeout); |
1672c0e3 JB |
3427 | } else { |
3428 | ifmgd->auth_data->timeout = jiffies - 1; | |
3429 | } | |
89afe614 | 3430 | ifmgd->auth_data->timeout_started = true; |
1672c0e3 JB |
3431 | } else if (ifmgd->assoc_data && |
3432 | (ieee80211_is_assoc_req(fc) || | |
3433 | ieee80211_is_reassoc_req(fc))) { | |
3434 | if (status_acked) { | |
3435 | ifmgd->assoc_data->timeout = | |
3436 | jiffies + IEEE80211_ASSOC_TIMEOUT_SHORT; | |
8d61ffa5 | 3437 | run_again(sdata, ifmgd->assoc_data->timeout); |
1672c0e3 JB |
3438 | } else { |
3439 | ifmgd->assoc_data->timeout = jiffies - 1; | |
3440 | } | |
89afe614 | 3441 | ifmgd->assoc_data->timeout_started = true; |
1672c0e3 JB |
3442 | } |
3443 | } | |
3444 | ||
89afe614 | 3445 | if (ifmgd->auth_data && ifmgd->auth_data->timeout_started && |
66e67e41 JB |
3446 | time_after(jiffies, ifmgd->auth_data->timeout)) { |
3447 | if (ifmgd->auth_data->done) { | |
3448 | /* | |
3449 | * ok ... we waited for assoc but userspace didn't, | |
3450 | * so let's just kill the auth data | |
3451 | */ | |
3452 | ieee80211_destroy_auth_data(sdata, false); | |
3453 | } else if (ieee80211_probe_auth(sdata)) { | |
3454 | u8 bssid[ETH_ALEN]; | |
3455 | ||
3456 | memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN); | |
3457 | ||
3458 | ieee80211_destroy_auth_data(sdata, false); | |
3459 | ||
6ff57cf8 | 3460 | cfg80211_auth_timeout(sdata->dev, bssid); |
66e67e41 | 3461 | } |
89afe614 | 3462 | } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) |
8d61ffa5 | 3463 | run_again(sdata, ifmgd->auth_data->timeout); |
66e67e41 | 3464 | |
89afe614 | 3465 | if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started && |
66e67e41 | 3466 | time_after(jiffies, ifmgd->assoc_data->timeout)) { |
989c6505 | 3467 | if ((ifmgd->assoc_data->need_beacon && !ifmgd->have_beacon) || |
66e67e41 | 3468 | ieee80211_do_assoc(sdata)) { |
959867fa | 3469 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; |
66e67e41 JB |
3470 | |
3471 | ieee80211_destroy_assoc_data(sdata, false); | |
959867fa | 3472 | cfg80211_assoc_timeout(sdata->dev, bss); |
66e67e41 | 3473 | } |
89afe614 | 3474 | } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) |
8d61ffa5 | 3475 | run_again(sdata, ifmgd->assoc_data->timeout); |
66e67e41 | 3476 | |
392b9ffb | 3477 | if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL && |
b291ba11 | 3478 | ifmgd->associated) { |
a43abf29 | 3479 | u8 bssid[ETH_ALEN]; |
72a8a3ed | 3480 | int max_tries; |
a43abf29 | 3481 | |
0c1ad2ca | 3482 | memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); |
4e5ff376 | 3483 | |
72a8a3ed | 3484 | if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) |
180205bd | 3485 | max_tries = max_nullfunc_tries; |
72a8a3ed | 3486 | else |
180205bd | 3487 | max_tries = max_probe_tries; |
72a8a3ed | 3488 | |
4e5ff376 FF |
3489 | /* ACK received for nullfunc probing frame */ |
3490 | if (!ifmgd->probe_send_count) | |
3491 | ieee80211_reset_ap_probe(sdata); | |
04ac3c0e FF |
3492 | else if (ifmgd->nullfunc_failed) { |
3493 | if (ifmgd->probe_send_count < max_tries) { | |
bdcbd8e0 JB |
3494 | mlme_dbg(sdata, |
3495 | "No ack for nullfunc frame to AP %pM, try %d/%i\n", | |
3496 | bssid, ifmgd->probe_send_count, | |
3497 | max_tries); | |
04ac3c0e FF |
3498 | ieee80211_mgd_probe_ap_send(sdata); |
3499 | } else { | |
bdcbd8e0 JB |
3500 | mlme_dbg(sdata, |
3501 | "No ack for nullfunc frame to AP %pM, disconnecting.\n", | |
3502 | bssid); | |
95acac61 | 3503 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 JB |
3504 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, |
3505 | false); | |
04ac3c0e FF |
3506 | } |
3507 | } else if (time_is_after_jiffies(ifmgd->probe_timeout)) | |
8d61ffa5 | 3508 | run_again(sdata, ifmgd->probe_timeout); |
04ac3c0e | 3509 | else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { |
bdcbd8e0 JB |
3510 | mlme_dbg(sdata, |
3511 | "Failed to send nullfunc to AP %pM after %dms, disconnecting\n", | |
3512 | bssid, probe_wait_ms); | |
95acac61 | 3513 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3514 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
04ac3c0e | 3515 | } else if (ifmgd->probe_send_count < max_tries) { |
bdcbd8e0 JB |
3516 | mlme_dbg(sdata, |
3517 | "No probe response from AP %pM after %dms, try %d/%i\n", | |
3518 | bssid, probe_wait_ms, | |
3519 | ifmgd->probe_send_count, max_tries); | |
a43abf29 ML |
3520 | ieee80211_mgd_probe_ap_send(sdata); |
3521 | } else { | |
b291ba11 JB |
3522 | /* |
3523 | * We actually lost the connection ... or did we? | |
3524 | * Let's make sure! | |
3525 | */ | |
b38afa87 BG |
3526 | wiphy_debug(local->hw.wiphy, |
3527 | "%s: No probe response from AP %pM" | |
3528 | " after %dms, disconnecting.\n", | |
3529 | sdata->name, | |
180205bd | 3530 | bssid, probe_wait_ms); |
04ac3c0e | 3531 | |
95acac61 | 3532 | ieee80211_sta_connection_lost(sdata, bssid, |
6b684db1 | 3533 | WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, false); |
b291ba11 JB |
3534 | } |
3535 | } | |
3536 | ||
8d61ffa5 | 3537 | sdata_unlock(sdata); |
f0706e82 JB |
3538 | } |
3539 | ||
b291ba11 JB |
3540 | static void ieee80211_sta_bcn_mon_timer(unsigned long data) |
3541 | { | |
3542 | struct ieee80211_sub_if_data *sdata = | |
3543 | (struct ieee80211_sub_if_data *) data; | |
3544 | struct ieee80211_local *local = sdata->local; | |
3545 | ||
3546 | if (local->quiescing) | |
3547 | return; | |
3548 | ||
682bd38b | 3549 | sdata->u.mgd.connection_loss = false; |
1e4dcd01 JO |
3550 | ieee80211_queue_work(&sdata->local->hw, |
3551 | &sdata->u.mgd.beacon_connection_loss_work); | |
b291ba11 JB |
3552 | } |
3553 | ||
3554 | static void ieee80211_sta_conn_mon_timer(unsigned long data) | |
3555 | { | |
3556 | struct ieee80211_sub_if_data *sdata = | |
3557 | (struct ieee80211_sub_if_data *) data; | |
3558 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3559 | struct ieee80211_local *local = sdata->local; | |
3560 | ||
3561 | if (local->quiescing) | |
3562 | return; | |
3563 | ||
42935eca | 3564 | ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); |
b291ba11 JB |
3565 | } |
3566 | ||
3567 | static void ieee80211_sta_monitor_work(struct work_struct *work) | |
3568 | { | |
3569 | struct ieee80211_sub_if_data *sdata = | |
3570 | container_of(work, struct ieee80211_sub_if_data, | |
3571 | u.mgd.monitor_work); | |
3572 | ||
3573 | ieee80211_mgd_probe_ap(sdata, false); | |
3574 | } | |
3575 | ||
9c6bd790 JB |
3576 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3577 | { | |
494f1fe5 EP |
3578 | u32 flags; |
3579 | ||
ad935687 | 3580 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
925e64c3 | 3581 | __ieee80211_stop_poll(sdata); |
ad935687 | 3582 | |
b291ba11 | 3583 | /* let's probe the connection once */ |
494f1fe5 EP |
3584 | flags = sdata->local->hw.flags; |
3585 | if (!(flags & IEEE80211_HW_CONNECTION_MONITOR)) | |
3586 | ieee80211_queue_work(&sdata->local->hw, | |
3587 | &sdata->u.mgd.monitor_work); | |
b291ba11 | 3588 | /* and do all the other regular work too */ |
64592c8f | 3589 | ieee80211_queue_work(&sdata->local->hw, &sdata->work); |
ad935687 | 3590 | } |
9c6bd790 | 3591 | } |
f0706e82 | 3592 | |
b8360ab8 | 3593 | #ifdef CONFIG_PM |
1a1cb744 JB |
3594 | void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata) |
3595 | { | |
3596 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3597 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
3598 | ||
3599 | sdata_lock(sdata); | |
3600 | ||
3601 | if (ifmgd->auth_data) { | |
3602 | /* | |
3603 | * If we are trying to authenticate while suspending, cfg80211 | |
3604 | * won't know and won't actually abort those attempts, thus we | |
3605 | * need to do that ourselves. | |
3606 | */ | |
3607 | ieee80211_send_deauth_disassoc(sdata, | |
3608 | ifmgd->auth_data->bss->bssid, | |
3609 | IEEE80211_STYPE_DEAUTH, | |
3610 | WLAN_REASON_DEAUTH_LEAVING, | |
3611 | false, frame_buf); | |
3612 | ieee80211_destroy_auth_data(sdata, false); | |
3613 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, | |
3614 | IEEE80211_DEAUTH_FRAME_LEN); | |
3615 | } | |
3616 | ||
3617 | sdata_unlock(sdata); | |
3618 | } | |
3619 | ||
b8360ab8 JB |
3620 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) |
3621 | { | |
3622 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3623 | ||
8d61ffa5 | 3624 | sdata_lock(sdata); |
b8360ab8 | 3625 | if (!ifmgd->associated) { |
8d61ffa5 | 3626 | sdata_unlock(sdata); |
b8360ab8 JB |
3627 | return; |
3628 | } | |
3629 | ||
3630 | if (sdata->flags & IEEE80211_SDATA_DISCONNECT_RESUME) { | |
3631 | sdata->flags &= ~IEEE80211_SDATA_DISCONNECT_RESUME; | |
3632 | mlme_dbg(sdata, "driver requested disconnect after resume\n"); | |
3633 | ieee80211_sta_connection_lost(sdata, | |
3634 | ifmgd->associated->bssid, | |
3635 | WLAN_REASON_UNSPECIFIED, | |
3636 | true); | |
8d61ffa5 | 3637 | sdata_unlock(sdata); |
b8360ab8 JB |
3638 | return; |
3639 | } | |
8d61ffa5 | 3640 | sdata_unlock(sdata); |
b8360ab8 JB |
3641 | } |
3642 | #endif | |
3643 | ||
9c6bd790 JB |
3644 | /* interface setup */ |
3645 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 3646 | { |
46900298 | 3647 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 3648 | |
46900298 | 3649 | ifmgd = &sdata->u.mgd; |
b291ba11 | 3650 | INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); |
46900298 | 3651 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); |
1e4dcd01 JO |
3652 | INIT_WORK(&ifmgd->beacon_connection_loss_work, |
3653 | ieee80211_beacon_connection_loss_work); | |
882a7c69 JB |
3654 | INIT_WORK(&ifmgd->csa_connection_drop_work, |
3655 | ieee80211_csa_connection_drop_work); | |
687da132 | 3656 | INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work); |
46900298 | 3657 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 3658 | (unsigned long) sdata); |
b291ba11 JB |
3659 | setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, |
3660 | (unsigned long) sdata); | |
3661 | setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, | |
3662 | (unsigned long) sdata); | |
46900298 | 3663 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 3664 | (unsigned long) sdata); |
9c6bd790 | 3665 | |
ab1faead | 3666 | ifmgd->flags = 0; |
1478acb3 | 3667 | ifmgd->powersave = sdata->wdev.ps; |
219c3867 AB |
3668 | ifmgd->uapsd_queues = sdata->local->hw.uapsd_queues; |
3669 | ifmgd->uapsd_max_sp_len = sdata->local->hw.uapsd_max_sp_len; | |
67baf663 | 3670 | ifmgd->p2p_noa_index = -1; |
bbbdff9e | 3671 | |
0f78231b JB |
3672 | if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) |
3673 | ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; | |
3674 | else | |
3675 | ifmgd->req_smps = IEEE80211_SMPS_OFF; | |
f0706e82 JB |
3676 | } |
3677 | ||
77fdaa12 JB |
3678 | /* scan finished notification */ |
3679 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
60f8b39c | 3680 | { |
31ee67a1 | 3681 | struct ieee80211_sub_if_data *sdata; |
60f8b39c | 3682 | |
77fdaa12 JB |
3683 | /* Restart STA timers */ |
3684 | rcu_read_lock(); | |
370bd005 BG |
3685 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
3686 | if (ieee80211_sdata_running(sdata)) | |
3687 | ieee80211_restart_sta_timer(sdata); | |
3688 | } | |
77fdaa12 JB |
3689 | rcu_read_unlock(); |
3690 | } | |
60f8b39c | 3691 | |
77fdaa12 JB |
3692 | int ieee80211_max_network_latency(struct notifier_block *nb, |
3693 | unsigned long data, void *dummy) | |
3694 | { | |
3695 | s32 latency_usec = (s32) data; | |
3696 | struct ieee80211_local *local = | |
3697 | container_of(nb, struct ieee80211_local, | |
3698 | network_latency_notifier); | |
1fa6f4af | 3699 | |
77fdaa12 JB |
3700 | mutex_lock(&local->iflist_mtx); |
3701 | ieee80211_recalc_ps(local, latency_usec); | |
3702 | mutex_unlock(&local->iflist_mtx); | |
dfe67012 | 3703 | |
77fdaa12 | 3704 | return 0; |
9c6bd790 JB |
3705 | } |
3706 | ||
f2d9d270 JB |
3707 | static u8 ieee80211_ht_vht_rx_chains(struct ieee80211_sub_if_data *sdata, |
3708 | struct cfg80211_bss *cbss) | |
3709 | { | |
3710 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3711 | const u8 *ht_cap_ie, *vht_cap_ie; | |
3712 | const struct ieee80211_ht_cap *ht_cap; | |
3713 | const struct ieee80211_vht_cap *vht_cap; | |
3714 | u8 chains = 1; | |
3715 | ||
3716 | if (ifmgd->flags & IEEE80211_STA_DISABLE_HT) | |
3717 | return chains; | |
3718 | ||
9caf0364 | 3719 | ht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); |
f2d9d270 JB |
3720 | if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { |
3721 | ht_cap = (void *)(ht_cap_ie + 2); | |
3722 | chains = ieee80211_mcs_to_chains(&ht_cap->mcs); | |
3723 | /* | |
3724 | * TODO: use "Tx Maximum Number Spatial Streams Supported" and | |
3725 | * "Tx Unequal Modulation Supported" fields. | |
3726 | */ | |
3727 | } | |
3728 | ||
3729 | if (ifmgd->flags & IEEE80211_STA_DISABLE_VHT) | |
3730 | return chains; | |
3731 | ||
9caf0364 | 3732 | vht_cap_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); |
f2d9d270 JB |
3733 | if (vht_cap_ie && vht_cap_ie[1] >= sizeof(*vht_cap)) { |
3734 | u8 nss; | |
3735 | u16 tx_mcs_map; | |
3736 | ||
3737 | vht_cap = (void *)(vht_cap_ie + 2); | |
3738 | tx_mcs_map = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map); | |
3739 | for (nss = 8; nss > 0; nss--) { | |
3740 | if (((tx_mcs_map >> (2 * (nss - 1))) & 3) != | |
3741 | IEEE80211_VHT_MCS_NOT_SUPPORTED) | |
3742 | break; | |
3743 | } | |
3744 | /* TODO: use "Tx Highest Supported Long GI Data Rate" field? */ | |
3745 | chains = max(chains, nss); | |
3746 | } | |
3747 | ||
3748 | return chains; | |
3749 | } | |
3750 | ||
b17166a7 JB |
3751 | static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, |
3752 | struct cfg80211_bss *cbss) | |
a1cf775d JB |
3753 | { |
3754 | struct ieee80211_local *local = sdata->local; | |
3755 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
24398e39 | 3756 | const struct ieee80211_ht_operation *ht_oper = NULL; |
f2d9d270 | 3757 | const struct ieee80211_vht_operation *vht_oper = NULL; |
24398e39 | 3758 | struct ieee80211_supported_band *sband; |
4bf88530 | 3759 | struct cfg80211_chan_def chandef; |
f2d9d270 | 3760 | int ret; |
a1cf775d | 3761 | |
24398e39 JB |
3762 | sband = local->hw.wiphy->bands[cbss->channel->band]; |
3763 | ||
f2d9d270 JB |
3764 | ifmgd->flags &= ~(IEEE80211_STA_DISABLE_40MHZ | |
3765 | IEEE80211_STA_DISABLE_80P80MHZ | | |
3766 | IEEE80211_STA_DISABLE_160MHZ); | |
3767 | ||
9caf0364 JB |
3768 | rcu_read_lock(); |
3769 | ||
f2d9d270 JB |
3770 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_HT) && |
3771 | sband->ht_cap.ht_supported) { | |
08e6effa | 3772 | const u8 *ht_oper_ie, *ht_cap; |
24398e39 | 3773 | |
9caf0364 | 3774 | ht_oper_ie = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_OPERATION); |
24398e39 JB |
3775 | if (ht_oper_ie && ht_oper_ie[1] >= sizeof(*ht_oper)) |
3776 | ht_oper = (void *)(ht_oper_ie + 2); | |
08e6effa JB |
3777 | |
3778 | ht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_HT_CAPABILITY); | |
3779 | if (!ht_cap || ht_cap[1] < sizeof(struct ieee80211_ht_cap)) { | |
3780 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; | |
3781 | ht_oper = NULL; | |
3782 | } | |
24398e39 JB |
3783 | } |
3784 | ||
f2d9d270 JB |
3785 | if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT) && |
3786 | sband->vht_cap.vht_supported) { | |
08e6effa | 3787 | const u8 *vht_oper_ie, *vht_cap; |
f2d9d270 | 3788 | |
9caf0364 JB |
3789 | vht_oper_ie = ieee80211_bss_get_ie(cbss, |
3790 | WLAN_EID_VHT_OPERATION); | |
f2d9d270 JB |
3791 | if (vht_oper_ie && vht_oper_ie[1] >= sizeof(*vht_oper)) |
3792 | vht_oper = (void *)(vht_oper_ie + 2); | |
3793 | if (vht_oper && !ht_oper) { | |
3794 | vht_oper = NULL; | |
bdcbd8e0 | 3795 | sdata_info(sdata, |
f2d9d270 | 3796 | "AP advertised VHT without HT, disabling both\n"); |
cb145022 JB |
3797 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
3798 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
24398e39 | 3799 | } |
08e6effa JB |
3800 | |
3801 | vht_cap = ieee80211_bss_get_ie(cbss, WLAN_EID_VHT_CAPABILITY); | |
3802 | if (!vht_cap || vht_cap[1] < sizeof(struct ieee80211_vht_cap)) { | |
3803 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
3804 | vht_oper = NULL; | |
3805 | } | |
24398e39 JB |
3806 | } |
3807 | ||
f2d9d270 JB |
3808 | ifmgd->flags |= ieee80211_determine_chantype(sdata, sband, |
3809 | cbss->channel, | |
3810 | ht_oper, vht_oper, | |
5cdaed1e | 3811 | &chandef, false); |
04ecd257 | 3812 | |
f2d9d270 JB |
3813 | sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss), |
3814 | local->rx_chains); | |
24398e39 | 3815 | |
9caf0364 JB |
3816 | rcu_read_unlock(); |
3817 | ||
04ecd257 JB |
3818 | /* will change later if needed */ |
3819 | sdata->smps_mode = IEEE80211_SMPS_OFF; | |
3820 | ||
34a3740d | 3821 | mutex_lock(&local->mtx); |
f2d9d270 JB |
3822 | /* |
3823 | * If this fails (possibly due to channel context sharing | |
3824 | * on incompatible channels, e.g. 80+80 and 160 sharing the | |
3825 | * same control channel) try to use a smaller bandwidth. | |
3826 | */ | |
3827 | ret = ieee80211_vif_use_channel(sdata, &chandef, | |
3828 | IEEE80211_CHANCTX_SHARED); | |
0418a445 SW |
3829 | |
3830 | /* don't downgrade for 5 and 10 MHz channels, though. */ | |
3831 | if (chandef.width == NL80211_CHAN_WIDTH_5 || | |
3832 | chandef.width == NL80211_CHAN_WIDTH_10) | |
34a3740d | 3833 | goto out; |
0418a445 | 3834 | |
d601cd8d | 3835 | while (ret && chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { |
e6b7cde4 | 3836 | ifmgd->flags |= ieee80211_chandef_downgrade(&chandef); |
d601cd8d JB |
3837 | ret = ieee80211_vif_use_channel(sdata, &chandef, |
3838 | IEEE80211_CHANCTX_SHARED); | |
3839 | } | |
34a3740d JB |
3840 | out: |
3841 | mutex_unlock(&local->mtx); | |
f2d9d270 | 3842 | return ret; |
b17166a7 JB |
3843 | } |
3844 | ||
3845 | static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata, | |
3846 | struct cfg80211_bss *cbss, bool assoc) | |
3847 | { | |
3848 | struct ieee80211_local *local = sdata->local; | |
3849 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3850 | struct ieee80211_bss *bss = (void *)cbss->priv; | |
3851 | struct sta_info *new_sta = NULL; | |
3852 | bool have_sta = false; | |
3853 | int err; | |
3854 | ||
3855 | if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) | |
3856 | return -EINVAL; | |
3857 | ||
3858 | if (assoc) { | |
3859 | rcu_read_lock(); | |
3860 | have_sta = sta_info_get(sdata, cbss->bssid); | |
3861 | rcu_read_unlock(); | |
3862 | } | |
3863 | ||
3864 | if (!have_sta) { | |
3865 | new_sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); | |
3866 | if (!new_sta) | |
3867 | return -ENOMEM; | |
3868 | } | |
13e0c8e3 | 3869 | if (new_sta) { |
5d6a1b06 JB |
3870 | u32 rates = 0, basic_rates = 0; |
3871 | bool have_higher_than_11mbit; | |
3872 | int min_rate = INT_MAX, min_rate_index = -1; | |
2103dec1 | 3873 | struct ieee80211_chanctx_conf *chanctx_conf; |
b17166a7 | 3874 | struct ieee80211_supported_band *sband; |
8cef2c9d | 3875 | const struct cfg80211_bss_ies *ies; |
2103dec1 SW |
3876 | int shift; |
3877 | u32 rate_flags; | |
b17166a7 JB |
3878 | |
3879 | sband = local->hw.wiphy->bands[cbss->channel->band]; | |
3880 | ||
3881 | err = ieee80211_prep_channel(sdata, cbss); | |
3882 | if (err) { | |
3883 | sta_info_free(local, new_sta); | |
2103dec1 | 3884 | return -EINVAL; |
b17166a7 | 3885 | } |
2103dec1 SW |
3886 | shift = ieee80211_vif_get_shift(&sdata->vif); |
3887 | ||
3888 | rcu_read_lock(); | |
3889 | chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); | |
3890 | if (WARN_ON(!chanctx_conf)) { | |
3891 | rcu_read_unlock(); | |
c368ddaa | 3892 | sta_info_free(local, new_sta); |
2103dec1 SW |
3893 | return -EINVAL; |
3894 | } | |
3895 | rate_flags = ieee80211_chandef_rate_flags(&chanctx_conf->def); | |
3896 | rcu_read_unlock(); | |
5d6a1b06 | 3897 | |
5d6a1b06 JB |
3898 | ieee80211_get_rates(sband, bss->supp_rates, |
3899 | bss->supp_rates_len, | |
3900 | &rates, &basic_rates, | |
3901 | &have_higher_than_11mbit, | |
2103dec1 SW |
3902 | &min_rate, &min_rate_index, |
3903 | shift, rate_flags); | |
5d6a1b06 JB |
3904 | |
3905 | /* | |
3906 | * This used to be a workaround for basic rates missing | |
3907 | * in the association response frame. Now that we no | |
3908 | * longer use the basic rates from there, it probably | |
3909 | * doesn't happen any more, but keep the workaround so | |
3910 | * in case some *other* APs are buggy in different ways | |
3911 | * we can connect -- with a warning. | |
3912 | */ | |
3913 | if (!basic_rates && min_rate_index >= 0) { | |
bdcbd8e0 JB |
3914 | sdata_info(sdata, |
3915 | "No basic rates, using min rate instead\n"); | |
5d6a1b06 JB |
3916 | basic_rates = BIT(min_rate_index); |
3917 | } | |
3918 | ||
13e0c8e3 | 3919 | new_sta->sta.supp_rates[cbss->channel->band] = rates; |
5d6a1b06 JB |
3920 | sdata->vif.bss_conf.basic_rates = basic_rates; |
3921 | ||
3922 | /* cf. IEEE 802.11 9.2.12 */ | |
55de908a | 3923 | if (cbss->channel->band == IEEE80211_BAND_2GHZ && |
5d6a1b06 JB |
3924 | have_higher_than_11mbit) |
3925 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
3926 | else | |
3927 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
3928 | ||
3929 | memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN); | |
3930 | ||
8c358bcd JB |
3931 | /* set timing information */ |
3932 | sdata->vif.bss_conf.beacon_int = cbss->beacon_interval; | |
8cef2c9d | 3933 | rcu_read_lock(); |
ef429dad JB |
3934 | ies = rcu_dereference(cbss->beacon_ies); |
3935 | if (ies) { | |
3936 | const u8 *tim_ie; | |
3937 | ||
3938 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3939 | sdata->vif.bss_conf.sync_device_ts = | |
3940 | bss->device_ts_beacon; | |
3941 | tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
3942 | ies->data, ies->len); | |
3943 | if (tim_ie && tim_ie[1] >= 2) | |
3944 | sdata->vif.bss_conf.sync_dtim_count = tim_ie[2]; | |
3945 | else | |
3946 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3947 | } else if (!(local->hw.flags & | |
3948 | IEEE80211_HW_TIMING_BEACON_ONLY)) { | |
3949 | ies = rcu_dereference(cbss->proberesp_ies); | |
3950 | /* must be non-NULL since beacon IEs were NULL */ | |
3951 | sdata->vif.bss_conf.sync_tsf = ies->tsf; | |
3952 | sdata->vif.bss_conf.sync_device_ts = | |
3953 | bss->device_ts_presp; | |
3954 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3955 | } else { | |
3956 | sdata->vif.bss_conf.sync_tsf = 0; | |
3957 | sdata->vif.bss_conf.sync_device_ts = 0; | |
3958 | sdata->vif.bss_conf.sync_dtim_count = 0; | |
3959 | } | |
8cef2c9d | 3960 | rcu_read_unlock(); |
8c358bcd JB |
3961 | |
3962 | /* tell driver about BSSID, basic rates and timing */ | |
5d6a1b06 | 3963 | ieee80211_bss_info_change_notify(sdata, |
8c358bcd JB |
3964 | BSS_CHANGED_BSSID | BSS_CHANGED_BASIC_RATES | |
3965 | BSS_CHANGED_BEACON_INT); | |
a1cf775d JB |
3966 | |
3967 | if (assoc) | |
13e0c8e3 | 3968 | sta_info_pre_move_state(new_sta, IEEE80211_STA_AUTH); |
a1cf775d | 3969 | |
13e0c8e3 JB |
3970 | err = sta_info_insert(new_sta); |
3971 | new_sta = NULL; | |
a1cf775d | 3972 | if (err) { |
bdcbd8e0 JB |
3973 | sdata_info(sdata, |
3974 | "failed to insert STA entry for the AP (error %d)\n", | |
3975 | err); | |
a1cf775d JB |
3976 | return err; |
3977 | } | |
3978 | } else | |
b203ca39 | 3979 | WARN_ON_ONCE(!ether_addr_equal(ifmgd->bssid, cbss->bssid)); |
a1cf775d JB |
3980 | |
3981 | return 0; | |
3982 | } | |
3983 | ||
77fdaa12 JB |
3984 | /* config hooks */ |
3985 | int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, | |
3986 | struct cfg80211_auth_request *req) | |
9c6bd790 | 3987 | { |
66e67e41 JB |
3988 | struct ieee80211_local *local = sdata->local; |
3989 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
3990 | struct ieee80211_mgd_auth_data *auth_data; | |
77fdaa12 | 3991 | u16 auth_alg; |
66e67e41 JB |
3992 | int err; |
3993 | ||
3994 | /* prepare auth data structure */ | |
9c6bd790 | 3995 | |
77fdaa12 JB |
3996 | switch (req->auth_type) { |
3997 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
3998 | auth_alg = WLAN_AUTH_OPEN; | |
3999 | break; | |
4000 | case NL80211_AUTHTYPE_SHARED_KEY: | |
66e67e41 | 4001 | if (IS_ERR(local->wep_tx_tfm)) |
9dca9c49 | 4002 | return -EOPNOTSUPP; |
77fdaa12 JB |
4003 | auth_alg = WLAN_AUTH_SHARED_KEY; |
4004 | break; | |
4005 | case NL80211_AUTHTYPE_FT: | |
4006 | auth_alg = WLAN_AUTH_FT; | |
4007 | break; | |
4008 | case NL80211_AUTHTYPE_NETWORK_EAP: | |
4009 | auth_alg = WLAN_AUTH_LEAP; | |
4010 | break; | |
6b8ece3a JM |
4011 | case NL80211_AUTHTYPE_SAE: |
4012 | auth_alg = WLAN_AUTH_SAE; | |
4013 | break; | |
77fdaa12 JB |
4014 | default: |
4015 | return -EOPNOTSUPP; | |
60f8b39c | 4016 | } |
77fdaa12 | 4017 | |
6b8ece3a JM |
4018 | auth_data = kzalloc(sizeof(*auth_data) + req->sae_data_len + |
4019 | req->ie_len, GFP_KERNEL); | |
66e67e41 | 4020 | if (!auth_data) |
9c6bd790 | 4021 | return -ENOMEM; |
77fdaa12 | 4022 | |
66e67e41 | 4023 | auth_data->bss = req->bss; |
77fdaa12 | 4024 | |
6b8ece3a JM |
4025 | if (req->sae_data_len >= 4) { |
4026 | __le16 *pos = (__le16 *) req->sae_data; | |
4027 | auth_data->sae_trans = le16_to_cpu(pos[0]); | |
4028 | auth_data->sae_status = le16_to_cpu(pos[1]); | |
4029 | memcpy(auth_data->data, req->sae_data + 4, | |
4030 | req->sae_data_len - 4); | |
4031 | auth_data->data_len += req->sae_data_len - 4; | |
4032 | } | |
4033 | ||
77fdaa12 | 4034 | if (req->ie && req->ie_len) { |
6b8ece3a JM |
4035 | memcpy(&auth_data->data[auth_data->data_len], |
4036 | req->ie, req->ie_len); | |
4037 | auth_data->data_len += req->ie_len; | |
9c6bd790 | 4038 | } |
77fdaa12 | 4039 | |
fffd0934 | 4040 | if (req->key && req->key_len) { |
66e67e41 JB |
4041 | auth_data->key_len = req->key_len; |
4042 | auth_data->key_idx = req->key_idx; | |
4043 | memcpy(auth_data->key, req->key, req->key_len); | |
fffd0934 JB |
4044 | } |
4045 | ||
66e67e41 | 4046 | auth_data->algorithm = auth_alg; |
60f8b39c | 4047 | |
66e67e41 | 4048 | /* try to authenticate/probe */ |
2a33bee2 | 4049 | |
66e67e41 JB |
4050 | if ((ifmgd->auth_data && !ifmgd->auth_data->done) || |
4051 | ifmgd->assoc_data) { | |
4052 | err = -EBUSY; | |
4053 | goto err_free; | |
2a33bee2 GE |
4054 | } |
4055 | ||
66e67e41 JB |
4056 | if (ifmgd->auth_data) |
4057 | ieee80211_destroy_auth_data(sdata, false); | |
2a33bee2 | 4058 | |
66e67e41 JB |
4059 | /* prep auth_data so we don't go into idle on disassoc */ |
4060 | ifmgd->auth_data = auth_data; | |
af6b6374 | 4061 | |
7b119dc0 JB |
4062 | if (ifmgd->associated) { |
4063 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4064 | ||
4065 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4066 | WLAN_REASON_UNSPECIFIED, | |
4067 | false, frame_buf); | |
4068 | ||
6ff57cf8 JB |
4069 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4070 | sizeof(frame_buf)); | |
7b119dc0 | 4071 | } |
af6b6374 | 4072 | |
bdcbd8e0 | 4073 | sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); |
e5b900d2 | 4074 | |
a1cf775d JB |
4075 | err = ieee80211_prep_connection(sdata, req->bss, false); |
4076 | if (err) | |
66e67e41 | 4077 | goto err_clear; |
af6b6374 | 4078 | |
66e67e41 JB |
4079 | err = ieee80211_probe_auth(sdata); |
4080 | if (err) { | |
66e67e41 JB |
4081 | sta_info_destroy_addr(sdata, req->bss->bssid); |
4082 | goto err_clear; | |
4083 | } | |
4084 | ||
4085 | /* hold our own reference */ | |
5b112d3d | 4086 | cfg80211_ref_bss(local->hw.wiphy, auth_data->bss); |
8d61ffa5 | 4087 | return 0; |
66e67e41 JB |
4088 | |
4089 | err_clear: | |
3d2abdfd EP |
4090 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4091 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4092 | ifmgd->auth_data = NULL; |
4093 | err_free: | |
4094 | kfree(auth_data); | |
66e67e41 | 4095 | return err; |
af6b6374 JB |
4096 | } |
4097 | ||
095d81ce JB |
4098 | static bool ieee80211_usable_wmm_params(struct ieee80211_sub_if_data *sdata, |
4099 | const u8 *wmm_param, int len) | |
4100 | { | |
4101 | const u8 *pos; | |
4102 | size_t left; | |
4103 | ||
4104 | if (len < 8) | |
4105 | return false; | |
4106 | ||
4107 | if (wmm_param[5] != 1 /* version */) | |
4108 | return false; | |
4109 | ||
4110 | pos = wmm_param + 8; | |
4111 | left = len - 8; | |
4112 | ||
4113 | for (; left >= 4; left -= 4, pos += 4) { | |
4114 | u8 aifsn = pos[0] & 0x0f; | |
4115 | u8 ecwmin = pos[1] & 0x0f; | |
4116 | u8 ecwmax = (pos[1] & 0xf0) >> 4; | |
4117 | int aci = (pos[0] >> 5) & 0x03; | |
4118 | ||
4119 | if (aifsn < 2) { | |
4120 | sdata_info(sdata, | |
4121 | "AP has invalid WMM params (AIFSN=%d for ACI %d), disabling WMM\n", | |
4122 | aifsn, aci); | |
4123 | return false; | |
4124 | } | |
4125 | if (ecwmin > ecwmax) { | |
4126 | sdata_info(sdata, | |
4127 | "AP has invalid WMM params (ECWmin/max=%d/%d for ACI %d), disabling WMM\n", | |
4128 | ecwmin, ecwmax, aci); | |
4129 | return false; | |
4130 | } | |
4131 | } | |
4132 | ||
4133 | return true; | |
4134 | } | |
4135 | ||
77fdaa12 JB |
4136 | int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, |
4137 | struct cfg80211_assoc_request *req) | |
f0706e82 | 4138 | { |
66e67e41 | 4139 | struct ieee80211_local *local = sdata->local; |
77fdaa12 | 4140 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
0c1ad2ca | 4141 | struct ieee80211_bss *bss = (void *)req->bss->priv; |
66e67e41 | 4142 | struct ieee80211_mgd_assoc_data *assoc_data; |
c65dd147 | 4143 | const struct cfg80211_bss_ies *beacon_ies; |
4e74bfdb | 4144 | struct ieee80211_supported_band *sband; |
b08fbbd8 | 4145 | const u8 *ssidie, *ht_ie, *vht_ie; |
2a33bee2 | 4146 | int i, err; |
f0706e82 | 4147 | |
66e67e41 JB |
4148 | assoc_data = kzalloc(sizeof(*assoc_data) + req->ie_len, GFP_KERNEL); |
4149 | if (!assoc_data) | |
4150 | return -ENOMEM; | |
4151 | ||
9caf0364 JB |
4152 | rcu_read_lock(); |
4153 | ssidie = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); | |
4154 | if (!ssidie) { | |
4155 | rcu_read_unlock(); | |
4156 | kfree(assoc_data); | |
4157 | return -EINVAL; | |
4158 | } | |
4159 | memcpy(assoc_data->ssid, ssidie + 2, ssidie[1]); | |
4160 | assoc_data->ssid_len = ssidie[1]; | |
4161 | rcu_read_unlock(); | |
4162 | ||
7b119dc0 JB |
4163 | if (ifmgd->associated) { |
4164 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; | |
4165 | ||
4166 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, | |
4167 | WLAN_REASON_UNSPECIFIED, | |
4168 | false, frame_buf); | |
4169 | ||
6ff57cf8 JB |
4170 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4171 | sizeof(frame_buf)); | |
7b119dc0 | 4172 | } |
66e67e41 JB |
4173 | |
4174 | if (ifmgd->auth_data && !ifmgd->auth_data->done) { | |
4175 | err = -EBUSY; | |
4176 | goto err_free; | |
af6b6374 | 4177 | } |
77fdaa12 | 4178 | |
66e67e41 JB |
4179 | if (ifmgd->assoc_data) { |
4180 | err = -EBUSY; | |
4181 | goto err_free; | |
4182 | } | |
77fdaa12 | 4183 | |
66e67e41 JB |
4184 | if (ifmgd->auth_data) { |
4185 | bool match; | |
4186 | ||
4187 | /* keep sta info, bssid if matching */ | |
b203ca39 | 4188 | match = ether_addr_equal(ifmgd->bssid, req->bss->bssid); |
66e67e41 | 4189 | ieee80211_destroy_auth_data(sdata, match); |
2a33bee2 GE |
4190 | } |
4191 | ||
66e67e41 | 4192 | /* prepare assoc data */ |
095d81ce | 4193 | |
d8ec4433 JO |
4194 | ifmgd->beacon_crc_valid = false; |
4195 | ||
095d81ce JB |
4196 | assoc_data->wmm = bss->wmm_used && |
4197 | (local->hw.queues >= IEEE80211_NUM_ACS); | |
4198 | if (assoc_data->wmm) { | |
4199 | /* try to check validity of WMM params IE */ | |
4200 | const struct cfg80211_bss_ies *ies; | |
4201 | const u8 *wp, *start, *end; | |
4202 | ||
4203 | rcu_read_lock(); | |
4204 | ies = rcu_dereference(req->bss->ies); | |
4205 | start = ies->data; | |
4206 | end = start + ies->len; | |
4207 | ||
4208 | while (true) { | |
4209 | wp = cfg80211_find_vendor_ie( | |
4210 | WLAN_OUI_MICROSOFT, | |
4211 | WLAN_OUI_TYPE_MICROSOFT_WMM, | |
4212 | start, end - start); | |
4213 | if (!wp) | |
4214 | break; | |
4215 | start = wp + wp[1] + 2; | |
4216 | /* if this IE is too short, try the next */ | |
4217 | if (wp[1] <= 4) | |
4218 | continue; | |
4219 | /* if this IE is WMM params, we found what we wanted */ | |
4220 | if (wp[6] == 1) | |
4221 | break; | |
4222 | } | |
4223 | ||
4224 | if (!wp || !ieee80211_usable_wmm_params(sdata, wp + 2, | |
4225 | wp[1] - 2)) { | |
4226 | assoc_data->wmm = false; | |
4227 | ifmgd->flags |= IEEE80211_STA_DISABLE_WMM; | |
4228 | } | |
4229 | rcu_read_unlock(); | |
4230 | } | |
4231 | ||
de5036aa JB |
4232 | /* |
4233 | * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. | |
4234 | * We still associate in non-HT mode (11a/b/g) if any one of these | |
4235 | * ciphers is configured as pairwise. | |
4236 | * We can set this to true for non-11n hardware, that'll be checked | |
4237 | * separately along with the peer capabilities. | |
4238 | */ | |
1c4cb928 | 4239 | for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) { |
77fdaa12 JB |
4240 | if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || |
4241 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || | |
1c4cb928 | 4242 | req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) { |
a8243b72 | 4243 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba | 4244 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
1c4cb928 | 4245 | netdev_info(sdata->dev, |
d545daba | 4246 | "disabling HT/VHT due to WEP/TKIP use\n"); |
1c4cb928 JB |
4247 | } |
4248 | } | |
77fdaa12 | 4249 | |
d545daba | 4250 | if (req->flags & ASSOC_REQ_DISABLE_HT) { |
a8243b72 | 4251 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
d545daba MP |
4252 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
4253 | } | |
ef96a842 | 4254 | |
dd5ecfea JB |
4255 | if (req->flags & ASSOC_REQ_DISABLE_VHT) |
4256 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
4257 | ||
4e74bfdb JB |
4258 | /* Also disable HT if we don't support it or the AP doesn't use WMM */ |
4259 | sband = local->hw.wiphy->bands[req->bss->channel->band]; | |
4260 | if (!sband->ht_cap.ht_supported || | |
095d81ce JB |
4261 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4262 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
a8243b72 | 4263 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
095d81ce JB |
4264 | if (!bss->wmm_used && |
4265 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4266 | netdev_info(sdata->dev, |
4267 | "disabling HT as WMM/QoS is not supported by the AP\n"); | |
1c4cb928 | 4268 | } |
4e74bfdb | 4269 | |
d545daba MP |
4270 | /* disable VHT if we don't support it or the AP doesn't use WMM */ |
4271 | if (!sband->vht_cap.vht_supported || | |
095d81ce JB |
4272 | local->hw.queues < IEEE80211_NUM_ACS || !bss->wmm_used || |
4273 | ifmgd->flags & IEEE80211_STA_DISABLE_WMM) { | |
d545daba | 4274 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; |
095d81ce JB |
4275 | if (!bss->wmm_used && |
4276 | !(ifmgd->flags & IEEE80211_STA_DISABLE_WMM)) | |
1b49de26 JB |
4277 | netdev_info(sdata->dev, |
4278 | "disabling VHT as WMM/QoS is not supported by the AP\n"); | |
d545daba MP |
4279 | } |
4280 | ||
ef96a842 BG |
4281 | memcpy(&ifmgd->ht_capa, &req->ht_capa, sizeof(ifmgd->ht_capa)); |
4282 | memcpy(&ifmgd->ht_capa_mask, &req->ht_capa_mask, | |
4283 | sizeof(ifmgd->ht_capa_mask)); | |
4284 | ||
dd5ecfea JB |
4285 | memcpy(&ifmgd->vht_capa, &req->vht_capa, sizeof(ifmgd->vht_capa)); |
4286 | memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask, | |
4287 | sizeof(ifmgd->vht_capa_mask)); | |
4288 | ||
77fdaa12 | 4289 | if (req->ie && req->ie_len) { |
66e67e41 JB |
4290 | memcpy(assoc_data->ie, req->ie, req->ie_len); |
4291 | assoc_data->ie_len = req->ie_len; | |
4292 | } | |
f679f65d | 4293 | |
66e67e41 | 4294 | assoc_data->bss = req->bss; |
f679f65d | 4295 | |
af6b6374 JB |
4296 | if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { |
4297 | if (ifmgd->powersave) | |
04ecd257 | 4298 | sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; |
af6b6374 | 4299 | else |
04ecd257 | 4300 | sdata->smps_mode = IEEE80211_SMPS_OFF; |
af6b6374 | 4301 | } else |
04ecd257 | 4302 | sdata->smps_mode = ifmgd->req_smps; |
af6b6374 | 4303 | |
66e67e41 | 4304 | assoc_data->capability = req->bss->capability; |
66e67e41 JB |
4305 | assoc_data->supp_rates = bss->supp_rates; |
4306 | assoc_data->supp_rates_len = bss->supp_rates_len; | |
9dde6423 | 4307 | |
9caf0364 | 4308 | rcu_read_lock(); |
9dde6423 JB |
4309 | ht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_OPERATION); |
4310 | if (ht_ie && ht_ie[1] >= sizeof(struct ieee80211_ht_operation)) | |
4311 | assoc_data->ap_ht_param = | |
4312 | ((struct ieee80211_ht_operation *)(ht_ie + 2))->ht_param; | |
4313 | else | |
a8243b72 | 4314 | ifmgd->flags |= IEEE80211_STA_DISABLE_HT; |
b08fbbd8 JB |
4315 | vht_ie = ieee80211_bss_get_ie(req->bss, WLAN_EID_VHT_CAPABILITY); |
4316 | if (vht_ie && vht_ie[1] >= sizeof(struct ieee80211_vht_cap)) | |
4317 | memcpy(&assoc_data->ap_vht_cap, vht_ie + 2, | |
4318 | sizeof(struct ieee80211_vht_cap)); | |
4319 | else | |
4320 | ifmgd->flags |= IEEE80211_STA_DISABLE_VHT; | |
9caf0364 | 4321 | rcu_read_unlock(); |
63f170e0 | 4322 | |
ab13315a | 4323 | if (bss->wmm_used && bss->uapsd_supported && |
24aa11ab AB |
4324 | (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) && |
4325 | sdata->wmm_acm != 0xff) { | |
76f0303d | 4326 | assoc_data->uapsd = true; |
ab13315a KV |
4327 | ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; |
4328 | } else { | |
76f0303d | 4329 | assoc_data->uapsd = false; |
ab13315a KV |
4330 | ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; |
4331 | } | |
4332 | ||
77fdaa12 | 4333 | if (req->prev_bssid) |
66e67e41 | 4334 | memcpy(assoc_data->prev_bssid, req->prev_bssid, ETH_ALEN); |
77fdaa12 JB |
4335 | |
4336 | if (req->use_mfp) { | |
4337 | ifmgd->mfp = IEEE80211_MFP_REQUIRED; | |
4338 | ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; | |
4339 | } else { | |
4340 | ifmgd->mfp = IEEE80211_MFP_DISABLED; | |
4341 | ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; | |
4342 | } | |
4343 | ||
4344 | if (req->crypto.control_port) | |
4345 | ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; | |
4346 | else | |
4347 | ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; | |
4348 | ||
a621fa4d JB |
4349 | sdata->control_port_protocol = req->crypto.control_port_ethertype; |
4350 | sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; | |
2475b1cc MS |
4351 | sdata->encrypt_headroom = ieee80211_cs_headroom(local, &req->crypto, |
4352 | sdata->vif.type); | |
a621fa4d | 4353 | |
66e67e41 JB |
4354 | /* kick off associate process */ |
4355 | ||
4356 | ifmgd->assoc_data = assoc_data; | |
826262c3 | 4357 | ifmgd->dtim_period = 0; |
989c6505 | 4358 | ifmgd->have_beacon = false; |
66e67e41 | 4359 | |
a1cf775d JB |
4360 | err = ieee80211_prep_connection(sdata, req->bss, true); |
4361 | if (err) | |
4362 | goto err_clear; | |
66e67e41 | 4363 | |
c65dd147 EG |
4364 | rcu_read_lock(); |
4365 | beacon_ies = rcu_dereference(req->bss->beacon_ies); | |
826262c3 | 4366 | |
c65dd147 EG |
4367 | if (sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC && |
4368 | !beacon_ies) { | |
4369 | /* | |
4370 | * Wait up to one beacon interval ... | |
4371 | * should this be more if we miss one? | |
4372 | */ | |
4373 | sdata_info(sdata, "waiting for beacon from %pM\n", | |
4374 | ifmgd->bssid); | |
4375 | assoc_data->timeout = TU_TO_EXP_TIME(req->bss->beacon_interval); | |
89afe614 | 4376 | assoc_data->timeout_started = true; |
c65dd147 EG |
4377 | assoc_data->need_beacon = true; |
4378 | } else if (beacon_ies) { | |
4379 | const u8 *tim_ie = cfg80211_find_ie(WLAN_EID_TIM, | |
4380 | beacon_ies->data, | |
4381 | beacon_ies->len); | |
ef429dad JB |
4382 | u8 dtim_count = 0; |
4383 | ||
c65dd147 EG |
4384 | if (tim_ie && tim_ie[1] >= sizeof(struct ieee80211_tim_ie)) { |
4385 | const struct ieee80211_tim_ie *tim; | |
4386 | tim = (void *)(tim_ie + 2); | |
4387 | ifmgd->dtim_period = tim->dtim_period; | |
ef429dad | 4388 | dtim_count = tim->dtim_count; |
826262c3 | 4389 | } |
989c6505 | 4390 | ifmgd->have_beacon = true; |
66e67e41 | 4391 | assoc_data->timeout = jiffies; |
89afe614 | 4392 | assoc_data->timeout_started = true; |
ef429dad JB |
4393 | |
4394 | if (local->hw.flags & IEEE80211_HW_TIMING_BEACON_ONLY) { | |
4395 | sdata->vif.bss_conf.sync_tsf = beacon_ies->tsf; | |
4396 | sdata->vif.bss_conf.sync_device_ts = | |
4397 | bss->device_ts_beacon; | |
4398 | sdata->vif.bss_conf.sync_dtim_count = dtim_count; | |
4399 | } | |
c65dd147 EG |
4400 | } else { |
4401 | assoc_data->timeout = jiffies; | |
89afe614 | 4402 | assoc_data->timeout_started = true; |
66e67e41 | 4403 | } |
c65dd147 EG |
4404 | rcu_read_unlock(); |
4405 | ||
8d61ffa5 | 4406 | run_again(sdata, assoc_data->timeout); |
66e67e41 | 4407 | |
fcff4f10 PS |
4408 | if (bss->corrupt_data) { |
4409 | char *corrupt_type = "data"; | |
4410 | if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_BEACON) { | |
4411 | if (bss->corrupt_data & | |
4412 | IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4413 | corrupt_type = "beacon and probe response"; | |
4414 | else | |
4415 | corrupt_type = "beacon"; | |
4416 | } else if (bss->corrupt_data & IEEE80211_BSS_CORRUPT_PROBE_RESP) | |
4417 | corrupt_type = "probe response"; | |
bdcbd8e0 JB |
4418 | sdata_info(sdata, "associating with AP with corrupt %s\n", |
4419 | corrupt_type); | |
fcff4f10 PS |
4420 | } |
4421 | ||
8d61ffa5 | 4422 | return 0; |
66e67e41 | 4423 | err_clear: |
3d2abdfd EP |
4424 | memset(ifmgd->bssid, 0, ETH_ALEN); |
4425 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID); | |
66e67e41 JB |
4426 | ifmgd->assoc_data = NULL; |
4427 | err_free: | |
4428 | kfree(assoc_data); | |
66e67e41 | 4429 | return err; |
f0706e82 JB |
4430 | } |
4431 | ||
77fdaa12 | 4432 | int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4433 | struct cfg80211_deauth_request *req) |
f0706e82 | 4434 | { |
46900298 | 4435 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
6ae16775 | 4436 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
6863255b | 4437 | bool tx = !req->local_state_change; |
f0706e82 | 4438 | |
c9c3a060 JB |
4439 | if (ifmgd->auth_data && |
4440 | ether_addr_equal(ifmgd->auth_data->bss->bssid, req->bssid)) { | |
4441 | sdata_info(sdata, | |
4442 | "aborting authentication with %pM by local choice (Reason: %u=%s)\n", | |
4443 | req->bssid, req->reason_code, | |
4444 | ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4445 | |
8c7d857c | 4446 | drv_mgd_prepare_tx(sdata->local, sdata); |
37ad3888 JB |
4447 | ieee80211_send_deauth_disassoc(sdata, req->bssid, |
4448 | IEEE80211_STYPE_DEAUTH, | |
6863255b | 4449 | req->reason_code, tx, |
37ad3888 | 4450 | frame_buf); |
86552017 | 4451 | ieee80211_destroy_auth_data(sdata, false); |
c9c3a060 JB |
4452 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4453 | IEEE80211_DEAUTH_FRAME_LEN); | |
86552017 | 4454 | |
c9c3a060 | 4455 | return 0; |
8c7d857c EG |
4456 | } |
4457 | ||
86552017 JB |
4458 | if (ifmgd->associated && |
4459 | ether_addr_equal(ifmgd->associated->bssid, req->bssid)) { | |
c9c3a060 JB |
4460 | sdata_info(sdata, |
4461 | "deauthenticating from %pM by local choice (Reason: %u=%s)\n", | |
4462 | req->bssid, req->reason_code, | |
4463 | ieee80211_get_reason_code_string(req->reason_code)); | |
4464 | ||
86552017 JB |
4465 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, |
4466 | req->reason_code, tx, frame_buf); | |
6ff57cf8 JB |
4467 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4468 | IEEE80211_DEAUTH_FRAME_LEN); | |
c9c3a060 JB |
4469 | return 0; |
4470 | } | |
86552017 | 4471 | |
c9c3a060 | 4472 | return -ENOTCONN; |
f0706e82 | 4473 | } |
84363e6e | 4474 | |
77fdaa12 | 4475 | int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, |
63c9c5e7 | 4476 | struct cfg80211_disassoc_request *req) |
9c6bd790 | 4477 | { |
77fdaa12 | 4478 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
e69e95db | 4479 | u8 bssid[ETH_ALEN]; |
6ae16775 | 4480 | u8 frame_buf[IEEE80211_DEAUTH_FRAME_LEN]; |
9c6bd790 | 4481 | |
8d8b261a JB |
4482 | /* |
4483 | * cfg80211 should catch this ... but it's racy since | |
4484 | * we can receive a disassoc frame, process it, hand it | |
4485 | * to cfg80211 while that's in a locked section already | |
4486 | * trying to tell us that the user wants to disconnect. | |
4487 | */ | |
8d61ffa5 | 4488 | if (ifmgd->associated != req->bss) |
77fdaa12 | 4489 | return -ENOLINK; |
77fdaa12 | 4490 | |
bdcbd8e0 | 4491 | sdata_info(sdata, |
dfa1ad29 CO |
4492 | "disassociating from %pM by local choice (Reason: %u=%s)\n", |
4493 | req->bss->bssid, req->reason_code, ieee80211_get_reason_code_string(req->reason_code)); | |
0ff71613 | 4494 | |
e69e95db | 4495 | memcpy(bssid, req->bss->bssid, ETH_ALEN); |
37ad3888 JB |
4496 | ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DISASSOC, |
4497 | req->reason_code, !req->local_state_change, | |
4498 | frame_buf); | |
10f644a4 | 4499 | |
6ff57cf8 JB |
4500 | cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, |
4501 | IEEE80211_DEAUTH_FRAME_LEN); | |
bc83b681 | 4502 | |
10f644a4 JB |
4503 | return 0; |
4504 | } | |
026331c4 | 4505 | |
afa762f6 | 4506 | void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) |
54e4ffb2 JB |
4507 | { |
4508 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
4509 | ||
49921859 BG |
4510 | /* |
4511 | * Make sure some work items will not run after this, | |
4512 | * they will not do anything but might not have been | |
4513 | * cancelled when disconnecting. | |
4514 | */ | |
4515 | cancel_work_sync(&ifmgd->monitor_work); | |
4516 | cancel_work_sync(&ifmgd->beacon_connection_loss_work); | |
4517 | cancel_work_sync(&ifmgd->request_smps_work); | |
4518 | cancel_work_sync(&ifmgd->csa_connection_drop_work); | |
4519 | cancel_work_sync(&ifmgd->chswitch_work); | |
4520 | ||
8d61ffa5 | 4521 | sdata_lock(sdata); |
959867fa JB |
4522 | if (ifmgd->assoc_data) { |
4523 | struct cfg80211_bss *bss = ifmgd->assoc_data->bss; | |
54e4ffb2 | 4524 | ieee80211_destroy_assoc_data(sdata, false); |
959867fa JB |
4525 | cfg80211_assoc_timeout(sdata->dev, bss); |
4526 | } | |
54e4ffb2 JB |
4527 | if (ifmgd->auth_data) |
4528 | ieee80211_destroy_auth_data(sdata, false); | |
4529 | del_timer_sync(&ifmgd->timer); | |
8d61ffa5 | 4530 | sdata_unlock(sdata); |
54e4ffb2 JB |
4531 | } |
4532 | ||
a97c13c3 JO |
4533 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
4534 | enum nl80211_cqm_rssi_threshold_event rssi_event, | |
4535 | gfp_t gfp) | |
4536 | { | |
4537 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
4538 | ||
b5878a2d JB |
4539 | trace_api_cqm_rssi_notify(sdata, rssi_event); |
4540 | ||
a97c13c3 JO |
4541 | cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); |
4542 | } | |
4543 | EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); |