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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> |
d0709a65 | 19 | #include <linux/rtnetlink.h> |
10f644a4 | 20 | #include <linux/pm_qos_params.h> |
d91f36db | 21 | #include <linux/crc32.h> |
f0706e82 | 22 | #include <net/mac80211.h> |
472dbc45 | 23 | #include <asm/unaligned.h> |
60f8b39c | 24 | |
f0706e82 | 25 | #include "ieee80211_i.h" |
24487981 | 26 | #include "driver-ops.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f0706e82 | 29 | |
6042a3e3 | 30 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
31 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
32 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
33 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
34 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
35 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
a971be22 | 36 | #define IEEE80211_PROBE_WAIT (HZ / 5) |
15b7b062 | 37 | #define IEEE80211_PROBE_IDLE_TIME (60 * HZ) |
f0706e82 | 38 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) |
f0706e82 | 39 | |
5bb644a0 JB |
40 | #define TMR_RUNNING_TIMER 0 |
41 | #define TMR_RUNNING_CHANSW 1 | |
42 | ||
5484e237 JB |
43 | /* utils */ |
44 | static int ecw2cw(int ecw) | |
60f8b39c | 45 | { |
5484e237 | 46 | return (1 << ecw) - 1; |
60f8b39c JB |
47 | } |
48 | ||
c2b13452 | 49 | static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) |
43ac2ca3 JM |
50 | { |
51 | u8 *end, *pos; | |
52 | ||
00d3f14c | 53 | pos = bss->cbss.information_elements; |
43ac2ca3 JM |
54 | if (pos == NULL) |
55 | return NULL; | |
00d3f14c | 56 | end = pos + bss->cbss.len_information_elements; |
43ac2ca3 JM |
57 | |
58 | while (pos + 1 < end) { | |
59 | if (pos + 2 + pos[1] > end) | |
60 | break; | |
61 | if (pos[0] == ie) | |
62 | return pos; | |
63 | pos += 2 + pos[1]; | |
64 | } | |
65 | ||
66 | return NULL; | |
67 | } | |
68 | ||
c2b13452 | 69 | static int ieee80211_compatible_rates(struct ieee80211_bss *bss, |
9ac19a90 | 70 | struct ieee80211_supported_band *sband, |
881d948c | 71 | u32 *rates) |
9ac19a90 JB |
72 | { |
73 | int i, j, count; | |
74 | *rates = 0; | |
75 | count = 0; | |
76 | for (i = 0; i < bss->supp_rates_len; i++) { | |
77 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
78 | ||
79 | for (j = 0; j < sband->n_bitrates; j++) | |
80 | if (sband->bitrates[j].bitrate == rate) { | |
81 | *rates |= BIT(j); | |
82 | count++; | |
83 | break; | |
84 | } | |
85 | } | |
86 | ||
87 | return count; | |
88 | } | |
89 | ||
d5522e03 JB |
90 | /* |
91 | * ieee80211_enable_ht should be called only after the operating band | |
92 | * has been determined as ht configuration depends on the hw's | |
93 | * HT abilities for a specific band. | |
94 | */ | |
95 | static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, | |
96 | struct ieee80211_ht_info *hti, | |
97 | u16 ap_ht_cap_flags) | |
98 | { | |
99 | struct ieee80211_local *local = sdata->local; | |
100 | struct ieee80211_supported_band *sband; | |
101 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
d5522e03 JB |
102 | struct sta_info *sta; |
103 | u32 changed = 0; | |
9ed6bcce | 104 | u16 ht_opmode; |
d5522e03 JB |
105 | bool enable_ht = true, ht_changed; |
106 | enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; | |
107 | ||
108 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
109 | ||
d5522e03 JB |
110 | /* HT is not supported */ |
111 | if (!sband->ht_cap.ht_supported) | |
112 | enable_ht = false; | |
113 | ||
114 | /* check that channel matches the right operating channel */ | |
115 | if (local->hw.conf.channel->center_freq != | |
116 | ieee80211_channel_to_frequency(hti->control_chan)) | |
117 | enable_ht = false; | |
118 | ||
119 | if (enable_ht) { | |
120 | channel_type = NL80211_CHAN_HT20; | |
121 | ||
122 | if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && | |
123 | (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && | |
124 | (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
125 | switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { | |
126 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
768777ea LR |
127 | if (!(local->hw.conf.channel->flags & |
128 | IEEE80211_CHAN_NO_HT40PLUS)) | |
129 | channel_type = NL80211_CHAN_HT40PLUS; | |
d5522e03 JB |
130 | break; |
131 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: | |
768777ea LR |
132 | if (!(local->hw.conf.channel->flags & |
133 | IEEE80211_CHAN_NO_HT40MINUS)) | |
134 | channel_type = NL80211_CHAN_HT40MINUS; | |
d5522e03 JB |
135 | break; |
136 | } | |
137 | } | |
138 | } | |
139 | ||
140 | ht_changed = conf_is_ht(&local->hw.conf) != enable_ht || | |
141 | channel_type != local->hw.conf.channel_type; | |
142 | ||
143 | local->oper_channel_type = channel_type; | |
144 | ||
145 | if (ht_changed) { | |
146 | /* channel_type change automatically detected */ | |
147 | ieee80211_hw_config(local, 0); | |
148 | ||
149 | rcu_read_lock(); | |
150 | ||
151 | sta = sta_info_get(local, ifmgd->bssid); | |
152 | if (sta) | |
153 | rate_control_rate_update(local, sband, sta, | |
154 | IEEE80211_RC_HT_CHANGED); | |
155 | ||
156 | rcu_read_unlock(); | |
d5522e03 JB |
157 | } |
158 | ||
159 | /* disable HT */ | |
160 | if (!enable_ht) | |
161 | return 0; | |
162 | ||
9ed6bcce | 163 | ht_opmode = le16_to_cpu(hti->operation_mode); |
d5522e03 JB |
164 | |
165 | /* if bss configuration changed store the new one */ | |
413ad50a JB |
166 | if (!sdata->ht_opmode_valid || |
167 | sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
d5522e03 | 168 | changed |= BSS_CHANGED_HT; |
9ed6bcce | 169 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
413ad50a | 170 | sdata->ht_opmode_valid = true; |
d5522e03 JB |
171 | } |
172 | ||
173 | return changed; | |
174 | } | |
175 | ||
9c6bd790 JB |
176 | /* frame sending functions */ |
177 | ||
46900298 | 178 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
9ac19a90 | 179 | { |
46900298 | 180 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
181 | struct ieee80211_local *local = sdata->local; |
182 | struct sk_buff *skb; | |
183 | struct ieee80211_mgmt *mgmt; | |
65fc73ac | 184 | u8 *pos, *ies, *ht_ie; |
9ac19a90 JB |
185 | int i, len, count, rates_len, supp_rates_len; |
186 | u16 capab; | |
c2b13452 | 187 | struct ieee80211_bss *bss; |
9ac19a90 JB |
188 | int wmm = 0; |
189 | struct ieee80211_supported_band *sband; | |
881d948c | 190 | u32 rates = 0; |
9ac19a90 JB |
191 | |
192 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
46900298 | 193 | sizeof(*mgmt) + 200 + ifmgd->extra_ie_len + |
65fc73ac | 194 | ifmgd->ssid_len); |
9ac19a90 JB |
195 | if (!skb) { |
196 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
197 | "frame\n", sdata->dev->name); | |
198 | return; | |
199 | } | |
200 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
201 | ||
202 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
203 | ||
46900298 | 204 | capab = ifmgd->capab; |
9ac19a90 JB |
205 | |
206 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
207 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
208 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
209 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
210 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
211 | } | |
212 | ||
46900298 | 213 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
9ac19a90 | 214 | local->hw.conf.channel->center_freq, |
46900298 | 215 | ifmgd->ssid, ifmgd->ssid_len); |
9ac19a90 | 216 | if (bss) { |
00d3f14c | 217 | if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY) |
9ac19a90 JB |
218 | capab |= WLAN_CAPABILITY_PRIVACY; |
219 | if (bss->wmm_used) | |
220 | wmm = 1; | |
221 | ||
222 | /* get all rates supported by the device and the AP as | |
223 | * some APs don't like getting a superset of their rates | |
224 | * in the association request (e.g. D-Link DAP 1353 in | |
225 | * b-only mode) */ | |
226 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
227 | ||
00d3f14c | 228 | if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
9ac19a90 JB |
229 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
230 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
231 | ||
232 | ieee80211_rx_bss_put(local, bss); | |
233 | } else { | |
234 | rates = ~0; | |
235 | rates_len = sband->n_bitrates; | |
236 | } | |
237 | ||
238 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
239 | memset(mgmt, 0, 24); | |
46900298 | 240 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 241 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 242 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 243 | |
46900298 | 244 | if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) { |
9ac19a90 JB |
245 | skb_put(skb, 10); |
246 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
247 | IEEE80211_STYPE_REASSOC_REQ); | |
248 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
249 | mgmt->u.reassoc_req.listen_interval = | |
250 | cpu_to_le16(local->hw.conf.listen_interval); | |
46900298 | 251 | memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid, |
9ac19a90 JB |
252 | ETH_ALEN); |
253 | } else { | |
254 | skb_put(skb, 4); | |
255 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
256 | IEEE80211_STYPE_ASSOC_REQ); | |
257 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
13554121 | 258 | mgmt->u.assoc_req.listen_interval = |
9ac19a90 JB |
259 | cpu_to_le16(local->hw.conf.listen_interval); |
260 | } | |
261 | ||
262 | /* SSID */ | |
46900298 | 263 | ies = pos = skb_put(skb, 2 + ifmgd->ssid_len); |
9ac19a90 | 264 | *pos++ = WLAN_EID_SSID; |
46900298 JB |
265 | *pos++ = ifmgd->ssid_len; |
266 | memcpy(pos, ifmgd->ssid, ifmgd->ssid_len); | |
9ac19a90 JB |
267 | |
268 | /* add all rates which were marked to be used above */ | |
269 | supp_rates_len = rates_len; | |
270 | if (supp_rates_len > 8) | |
271 | supp_rates_len = 8; | |
272 | ||
273 | len = sband->n_bitrates; | |
274 | pos = skb_put(skb, supp_rates_len + 2); | |
275 | *pos++ = WLAN_EID_SUPP_RATES; | |
276 | *pos++ = supp_rates_len; | |
277 | ||
278 | count = 0; | |
279 | for (i = 0; i < sband->n_bitrates; i++) { | |
280 | if (BIT(i) & rates) { | |
281 | int rate = sband->bitrates[i].bitrate; | |
282 | *pos++ = (u8) (rate / 5); | |
283 | if (++count == 8) | |
284 | break; | |
285 | } | |
286 | } | |
287 | ||
288 | if (rates_len > count) { | |
289 | pos = skb_put(skb, rates_len - count + 2); | |
290 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
291 | *pos++ = rates_len - count; | |
292 | ||
293 | for (i++; i < sband->n_bitrates; i++) { | |
294 | if (BIT(i) & rates) { | |
295 | int rate = sband->bitrates[i].bitrate; | |
296 | *pos++ = (u8) (rate / 5); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
302 | /* 1. power capabilities */ | |
303 | pos = skb_put(skb, 4); | |
304 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
305 | *pos++ = 2; | |
306 | *pos++ = 0; /* min tx power */ | |
307 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
308 | ||
309 | /* 2. supported channels */ | |
310 | /* TODO: get this in reg domain format */ | |
311 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
312 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
313 | *pos++ = 2 * sband->n_channels; | |
314 | for (i = 0; i < sband->n_channels; i++) { | |
315 | *pos++ = ieee80211_frequency_to_channel( | |
316 | sband->channels[i].center_freq); | |
317 | *pos++ = 1; /* one channel in the subband*/ | |
318 | } | |
319 | } | |
320 | ||
46900298 JB |
321 | if (ifmgd->extra_ie) { |
322 | pos = skb_put(skb, ifmgd->extra_ie_len); | |
323 | memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len); | |
9ac19a90 JB |
324 | } |
325 | ||
46900298 | 326 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) { |
9ac19a90 JB |
327 | pos = skb_put(skb, 9); |
328 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
329 | *pos++ = 7; /* len */ | |
330 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
331 | *pos++ = 0x50; | |
332 | *pos++ = 0xf2; | |
333 | *pos++ = 2; /* WME */ | |
334 | *pos++ = 0; /* WME info */ | |
335 | *pos++ = 1; /* WME ver */ | |
336 | *pos++ = 0; | |
337 | } | |
338 | ||
339 | /* wmm support is a must to HT */ | |
eb46936b VT |
340 | /* |
341 | * IEEE802.11n does not allow TKIP/WEP as pairwise | |
342 | * ciphers in HT mode. We still associate in non-ht | |
343 | * mode (11a/b/g) if any one of these ciphers is | |
344 | * configured as pairwise. | |
345 | */ | |
46900298 | 346 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
d9fe60de JB |
347 | sband->ht_cap.ht_supported && |
348 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && | |
eb46936b | 349 | ht_ie[1] >= sizeof(struct ieee80211_ht_info) && |
46900298 | 350 | (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) { |
d9fe60de JB |
351 | struct ieee80211_ht_info *ht_info = |
352 | (struct ieee80211_ht_info *)(ht_ie + 2); | |
353 | u16 cap = sband->ht_cap.cap; | |
9ac19a90 JB |
354 | __le16 tmp; |
355 | u32 flags = local->hw.conf.channel->flags; | |
356 | ||
d9fe60de JB |
357 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
358 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
689da1b3 | 359 | if (flags & IEEE80211_CHAN_NO_HT40PLUS) { |
d9fe60de | 360 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
361 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
362 | } | |
363 | break; | |
d9fe60de | 364 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
689da1b3 | 365 | if (flags & IEEE80211_CHAN_NO_HT40MINUS) { |
d9fe60de | 366 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
367 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
368 | } | |
369 | break; | |
370 | } | |
371 | ||
372 | tmp = cpu_to_le16(cap); | |
373 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
374 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
375 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
376 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
377 | memcpy(pos, &tmp, sizeof(u16)); | |
378 | pos += sizeof(u16); | |
379 | /* TODO: needs a define here for << 2 */ | |
d9fe60de JB |
380 | *pos++ = sband->ht_cap.ampdu_factor | |
381 | (sband->ht_cap.ampdu_density << 2); | |
382 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
9ac19a90 JB |
383 | } |
384 | ||
46900298 JB |
385 | kfree(ifmgd->assocreq_ies); |
386 | ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies; | |
387 | ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL); | |
388 | if (ifmgd->assocreq_ies) | |
389 | memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len); | |
9ac19a90 | 390 | |
e50db65c | 391 | ieee80211_tx_skb(sdata, skb, 0); |
9ac19a90 JB |
392 | } |
393 | ||
394 | ||
ef422bc0 JB |
395 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
396 | u16 stype, u16 reason) | |
9ac19a90 JB |
397 | { |
398 | struct ieee80211_local *local = sdata->local; | |
46900298 | 399 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
400 | struct sk_buff *skb; |
401 | struct ieee80211_mgmt *mgmt; | |
9aed3cc1 | 402 | |
65fc73ac | 403 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
9ac19a90 | 404 | if (!skb) { |
ef422bc0 JB |
405 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
406 | "deauth/disassoc frame\n", sdata->dev->name); | |
9ac19a90 JB |
407 | return; |
408 | } | |
409 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
410 | ||
411 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
412 | memset(mgmt, 0, 24); | |
46900298 | 413 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 414 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 415 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
ef422bc0 | 416 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 417 | skb_put(skb, 2); |
ef422bc0 | 418 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
419 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
420 | ||
53b46b84 JM |
421 | if (stype == IEEE80211_STYPE_DEAUTH) |
422 | cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len); | |
423 | else | |
424 | cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len); | |
46900298 | 425 | ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED); |
9ac19a90 JB |
426 | } |
427 | ||
572e0012 KV |
428 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
429 | struct ieee80211_sub_if_data *sdata) | |
430 | { | |
46900298 | 431 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
572e0012 KV |
432 | struct ieee80211_pspoll *pspoll; |
433 | struct sk_buff *skb; | |
434 | u16 fc; | |
435 | ||
436 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); | |
437 | if (!skb) { | |
438 | printk(KERN_DEBUG "%s: failed to allocate buffer for " | |
439 | "pspoll frame\n", sdata->dev->name); | |
440 | return; | |
441 | } | |
442 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
443 | ||
444 | pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); | |
445 | memset(pspoll, 0, sizeof(*pspoll)); | |
446 | fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; | |
447 | pspoll->frame_control = cpu_to_le16(fc); | |
46900298 | 448 | pspoll->aid = cpu_to_le16(ifmgd->aid); |
572e0012 KV |
449 | |
450 | /* aid in PS-Poll has its two MSBs each set to 1 */ | |
451 | pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); | |
452 | ||
46900298 | 453 | memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); |
572e0012 KV |
454 | memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN); |
455 | ||
456 | ieee80211_tx_skb(sdata, skb, 0); | |
572e0012 KV |
457 | } |
458 | ||
965bedad JB |
459 | void ieee80211_send_nullfunc(struct ieee80211_local *local, |
460 | struct ieee80211_sub_if_data *sdata, | |
461 | int powersave) | |
462 | { | |
463 | struct sk_buff *skb; | |
464 | struct ieee80211_hdr *nullfunc; | |
465 | __le16 fc; | |
466 | ||
467 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
468 | return; | |
469 | ||
470 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
471 | if (!skb) { | |
472 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
473 | "frame\n", sdata->dev->name); | |
474 | return; | |
475 | } | |
476 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
477 | ||
478 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
479 | memset(nullfunc, 0, 24); | |
480 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
481 | IEEE80211_FCTL_TODS); | |
482 | if (powersave) | |
483 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); | |
484 | nullfunc->frame_control = fc; | |
485 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
486 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
487 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
488 | ||
489 | ieee80211_tx_skb(sdata, skb, 0); | |
490 | } | |
491 | ||
cc32abd4 JB |
492 | /* spectrum management related things */ |
493 | static void ieee80211_chswitch_work(struct work_struct *work) | |
494 | { | |
495 | struct ieee80211_sub_if_data *sdata = | |
496 | container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); | |
497 | struct ieee80211_bss *bss; | |
498 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
499 | ||
500 | if (!netif_running(sdata->dev)) | |
501 | return; | |
502 | ||
503 | bss = ieee80211_rx_bss_get(sdata->local, ifmgd->bssid, | |
504 | sdata->local->hw.conf.channel->center_freq, | |
505 | ifmgd->ssid, ifmgd->ssid_len); | |
506 | if (!bss) | |
507 | goto exit; | |
508 | ||
509 | sdata->local->oper_channel = sdata->local->csa_channel; | |
510 | /* XXX: shouldn't really modify cfg80211-owned data! */ | |
511 | if (!ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL)) | |
512 | bss->cbss.channel = sdata->local->oper_channel; | |
513 | ||
514 | ieee80211_rx_bss_put(sdata->local, bss); | |
515 | exit: | |
516 | ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; | |
517 | ieee80211_wake_queues_by_reason(&sdata->local->hw, | |
518 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
519 | } | |
520 | ||
521 | static void ieee80211_chswitch_timer(unsigned long data) | |
522 | { | |
523 | struct ieee80211_sub_if_data *sdata = | |
524 | (struct ieee80211_sub_if_data *) data; | |
525 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
526 | ||
5bb644a0 JB |
527 | if (sdata->local->quiescing) { |
528 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
529 | return; | |
530 | } | |
531 | ||
cc32abd4 JB |
532 | queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); |
533 | } | |
534 | ||
535 | void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, | |
536 | struct ieee80211_channel_sw_ie *sw_elem, | |
537 | struct ieee80211_bss *bss) | |
538 | { | |
539 | struct ieee80211_channel *new_ch; | |
540 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
541 | int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); | |
542 | ||
543 | if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATED) | |
544 | return; | |
545 | ||
546 | if (sdata->local->sw_scanning || sdata->local->hw_scanning) | |
547 | return; | |
548 | ||
549 | /* Disregard subsequent beacons if we are already running a timer | |
550 | processing a CSA */ | |
551 | ||
552 | if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) | |
553 | return; | |
554 | ||
555 | new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); | |
556 | if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) | |
557 | return; | |
558 | ||
559 | sdata->local->csa_channel = new_ch; | |
560 | ||
561 | if (sw_elem->count <= 1) { | |
562 | queue_work(sdata->local->hw.workqueue, &ifmgd->chswitch_work); | |
563 | } else { | |
564 | ieee80211_stop_queues_by_reason(&sdata->local->hw, | |
565 | IEEE80211_QUEUE_STOP_REASON_CSA); | |
566 | ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; | |
567 | mod_timer(&ifmgd->chswitch_timer, | |
568 | jiffies + | |
569 | msecs_to_jiffies(sw_elem->count * | |
570 | bss->cbss.beacon_interval)); | |
571 | } | |
572 | } | |
573 | ||
574 | static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, | |
575 | u16 capab_info, u8 *pwr_constr_elem, | |
576 | u8 pwr_constr_elem_len) | |
577 | { | |
578 | struct ieee80211_conf *conf = &sdata->local->hw.conf; | |
579 | ||
580 | if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) | |
581 | return; | |
582 | ||
583 | /* Power constraint IE length should be 1 octet */ | |
584 | if (pwr_constr_elem_len != 1) | |
585 | return; | |
586 | ||
587 | if ((*pwr_constr_elem <= conf->channel->max_power) && | |
588 | (*pwr_constr_elem != sdata->local->power_constr_level)) { | |
589 | sdata->local->power_constr_level = *pwr_constr_elem; | |
590 | ieee80211_hw_config(sdata->local, 0); | |
591 | } | |
592 | } | |
593 | ||
965bedad JB |
594 | /* powersave */ |
595 | static void ieee80211_enable_ps(struct ieee80211_local *local, | |
596 | struct ieee80211_sub_if_data *sdata) | |
597 | { | |
598 | struct ieee80211_conf *conf = &local->hw.conf; | |
599 | ||
d5edaedc JB |
600 | /* |
601 | * If we are scanning right now then the parameters will | |
602 | * take effect when scan finishes. | |
603 | */ | |
604 | if (local->hw_scanning || local->sw_scanning) | |
605 | return; | |
606 | ||
965bedad JB |
607 | if (conf->dynamic_ps_timeout > 0 && |
608 | !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { | |
609 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
610 | msecs_to_jiffies(conf->dynamic_ps_timeout)); | |
611 | } else { | |
612 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
613 | ieee80211_send_nullfunc(local, sdata, 1); | |
614 | conf->flags |= IEEE80211_CONF_PS; | |
615 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
616 | } | |
617 | } | |
618 | ||
619 | static void ieee80211_change_ps(struct ieee80211_local *local) | |
620 | { | |
621 | struct ieee80211_conf *conf = &local->hw.conf; | |
622 | ||
623 | if (local->ps_sdata) { | |
624 | if (!(local->ps_sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED)) | |
625 | return; | |
626 | ||
627 | ieee80211_enable_ps(local, local->ps_sdata); | |
628 | } else if (conf->flags & IEEE80211_CONF_PS) { | |
629 | conf->flags &= ~IEEE80211_CONF_PS; | |
630 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
631 | del_timer_sync(&local->dynamic_ps_timer); | |
632 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
633 | } | |
634 | } | |
635 | ||
636 | /* need to hold RTNL or interface lock */ | |
10f644a4 | 637 | void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) |
965bedad JB |
638 | { |
639 | struct ieee80211_sub_if_data *sdata, *found = NULL; | |
640 | int count = 0; | |
641 | ||
642 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { | |
643 | local->ps_sdata = NULL; | |
644 | return; | |
645 | } | |
646 | ||
647 | list_for_each_entry(sdata, &local->interfaces, list) { | |
648 | if (!netif_running(sdata->dev)) | |
649 | continue; | |
650 | if (sdata->vif.type != NL80211_IFTYPE_STATION) | |
651 | continue; | |
652 | found = sdata; | |
653 | count++; | |
654 | } | |
655 | ||
10f644a4 JB |
656 | if (count == 1 && found->u.mgd.powersave) { |
657 | s32 beaconint_us; | |
658 | ||
659 | if (latency < 0) | |
660 | latency = pm_qos_requirement(PM_QOS_NETWORK_LATENCY); | |
661 | ||
662 | beaconint_us = ieee80211_tu_to_usec( | |
663 | found->vif.bss_conf.beacon_int); | |
664 | ||
04fe2037 | 665 | if (beaconint_us > latency) { |
10f644a4 | 666 | local->ps_sdata = NULL; |
04fe2037 JB |
667 | } else { |
668 | u8 dtimper = found->vif.bss_conf.dtim_period; | |
669 | int maxslp = 1; | |
670 | ||
671 | if (dtimper > 1) | |
672 | maxslp = min_t(int, dtimper, | |
673 | latency / beaconint_us); | |
674 | ||
9ccebe61 | 675 | local->hw.conf.max_sleep_period = maxslp; |
10f644a4 | 676 | local->ps_sdata = found; |
04fe2037 | 677 | } |
10f644a4 | 678 | } else { |
965bedad | 679 | local->ps_sdata = NULL; |
10f644a4 | 680 | } |
965bedad JB |
681 | |
682 | ieee80211_change_ps(local); | |
683 | } | |
684 | ||
685 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) | |
686 | { | |
687 | struct ieee80211_local *local = | |
688 | container_of(work, struct ieee80211_local, | |
689 | dynamic_ps_disable_work); | |
690 | ||
691 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
692 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
693 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
694 | } | |
695 | ||
696 | ieee80211_wake_queues_by_reason(&local->hw, | |
697 | IEEE80211_QUEUE_STOP_REASON_PS); | |
698 | } | |
699 | ||
700 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
701 | { | |
702 | struct ieee80211_local *local = | |
703 | container_of(work, struct ieee80211_local, | |
704 | dynamic_ps_enable_work); | |
705 | struct ieee80211_sub_if_data *sdata = local->ps_sdata; | |
706 | ||
707 | /* can only happen when PS was just disabled anyway */ | |
708 | if (!sdata) | |
709 | return; | |
710 | ||
711 | if (local->hw.conf.flags & IEEE80211_CONF_PS) | |
712 | return; | |
713 | ||
714 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
715 | ieee80211_send_nullfunc(local, sdata, 1); | |
716 | ||
717 | local->hw.conf.flags |= IEEE80211_CONF_PS; | |
718 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
719 | } | |
720 | ||
721 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
722 | { | |
723 | struct ieee80211_local *local = (void *) data; | |
724 | ||
5bb644a0 JB |
725 | if (local->quiescing) |
726 | return; | |
727 | ||
965bedad JB |
728 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); |
729 | } | |
730 | ||
60f8b39c | 731 | /* MLME */ |
f698d856 | 732 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
46900298 | 733 | struct ieee80211_if_managed *ifmgd, |
f0706e82 JB |
734 | u8 *wmm_param, size_t wmm_param_len) |
735 | { | |
f0706e82 JB |
736 | struct ieee80211_tx_queue_params params; |
737 | size_t left; | |
738 | int count; | |
739 | u8 *pos; | |
740 | ||
46900298 | 741 | if (!(ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) |
3434fbd3 JB |
742 | return; |
743 | ||
744 | if (!wmm_param) | |
745 | return; | |
746 | ||
f0706e82 JB |
747 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
748 | return; | |
749 | count = wmm_param[6] & 0x0f; | |
46900298 | 750 | if (count == ifmgd->wmm_last_param_set) |
f0706e82 | 751 | return; |
46900298 | 752 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
753 | |
754 | pos = wmm_param + 8; | |
755 | left = wmm_param_len - 8; | |
756 | ||
757 | memset(¶ms, 0, sizeof(params)); | |
758 | ||
f0706e82 JB |
759 | local->wmm_acm = 0; |
760 | for (; left >= 4; left -= 4, pos += 4) { | |
761 | int aci = (pos[0] >> 5) & 0x03; | |
762 | int acm = (pos[0] >> 4) & 0x01; | |
763 | int queue; | |
764 | ||
765 | switch (aci) { | |
0eeb59fe | 766 | case 1: /* AC_BK */ |
e100bb64 | 767 | queue = 3; |
988c0f72 | 768 | if (acm) |
0eeb59fe | 769 | local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
f0706e82 | 770 | break; |
0eeb59fe | 771 | case 2: /* AC_VI */ |
e100bb64 | 772 | queue = 1; |
988c0f72 | 773 | if (acm) |
0eeb59fe | 774 | local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
f0706e82 | 775 | break; |
0eeb59fe | 776 | case 3: /* AC_VO */ |
e100bb64 | 777 | queue = 0; |
988c0f72 | 778 | if (acm) |
0eeb59fe | 779 | local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
f0706e82 | 780 | break; |
0eeb59fe | 781 | case 0: /* AC_BE */ |
f0706e82 | 782 | default: |
e100bb64 | 783 | queue = 2; |
988c0f72 | 784 | if (acm) |
0eeb59fe | 785 | local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
f0706e82 JB |
786 | break; |
787 | } | |
788 | ||
789 | params.aifs = pos[0] & 0x0f; | |
790 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
791 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 792 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 793 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 794 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 795 | "cWmin=%d cWmax=%d txop=%d\n", |
0bffe40f JB |
796 | wiphy_name(local->hw.wiphy), queue, aci, acm, |
797 | params.aifs, params.cw_min, params.cw_max, params.txop); | |
3330d7be | 798 | #endif |
24487981 | 799 | if (drv_conf_tx(local, queue, ¶ms) && local->ops->conf_tx) |
f0706e82 | 800 | printk(KERN_DEBUG "%s: failed to set TX queue " |
0bffe40f JB |
801 | "parameters for queue %d\n", |
802 | wiphy_name(local->hw.wiphy), queue); | |
f0706e82 JB |
803 | } |
804 | } | |
805 | ||
7a5158ef JB |
806 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
807 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 808 | { |
bda3933a | 809 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ebd74487 | 810 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
46900298 | 811 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
ebd74487 | 812 | #endif |
471b3efd | 813 | u32 changed = 0; |
7a5158ef JB |
814 | bool use_protection; |
815 | bool use_short_preamble; | |
816 | bool use_short_slot; | |
817 | ||
818 | if (erp_valid) { | |
819 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
820 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
821 | } else { | |
822 | use_protection = false; | |
823 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
824 | } | |
825 | ||
826 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
5628221c | 827 | |
471b3efd | 828 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 829 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 830 | if (net_ratelimit()) { |
0c68ae26 | 831 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
471b3efd | 832 | sdata->dev->name, |
5628221c | 833 | use_protection ? "enabled" : "disabled", |
46900298 | 834 | ifmgd->bssid); |
5628221c | 835 | } |
f4ea83dd | 836 | #endif |
471b3efd JB |
837 | bss_conf->use_cts_prot = use_protection; |
838 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 839 | } |
7e9ed188 | 840 | |
d43c7b37 | 841 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 842 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
843 | if (net_ratelimit()) { |
844 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0c68ae26 | 845 | " (BSSID=%pM)\n", |
471b3efd | 846 | sdata->dev->name, |
d43c7b37 | 847 | use_short_preamble ? "short" : "long", |
46900298 | 848 | ifmgd->bssid); |
7e9ed188 | 849 | } |
f4ea83dd | 850 | #endif |
d43c7b37 | 851 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 852 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 853 | } |
d9430a32 | 854 | |
7a5158ef JB |
855 | if (use_short_slot != bss_conf->use_short_slot) { |
856 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
857 | if (net_ratelimit()) { | |
391429c1 CL |
858 | printk(KERN_DEBUG "%s: switched to %s slot time" |
859 | " (BSSID=%pM)\n", | |
7a5158ef JB |
860 | sdata->dev->name, |
861 | use_short_slot ? "short" : "long", | |
46900298 | 862 | ifmgd->bssid); |
7a5158ef JB |
863 | } |
864 | #endif | |
865 | bss_conf->use_short_slot = use_short_slot; | |
866 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
867 | } |
868 | ||
869 | return changed; | |
870 | } | |
871 | ||
46900298 | 872 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata) |
f5e5bf25 TW |
873 | { |
874 | union iwreq_data wrqu; | |
46900298 | 875 | |
f5e5bf25 | 876 | memset(&wrqu, 0, sizeof(wrqu)); |
46900298 JB |
877 | if (sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED) |
878 | memcpy(wrqu.ap_addr.sa_data, sdata->u.mgd.bssid, ETH_ALEN); | |
f5e5bf25 TW |
879 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
880 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
881 | } | |
882 | ||
46900298 | 883 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 884 | { |
46900298 | 885 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
74af0250 LT |
886 | char *buf; |
887 | size_t len; | |
888 | int i; | |
f0706e82 JB |
889 | union iwreq_data wrqu; |
890 | ||
46900298 | 891 | if (!ifmgd->assocreq_ies && !ifmgd->assocresp_ies) |
74af0250 LT |
892 | return; |
893 | ||
46900298 JB |
894 | buf = kmalloc(50 + 2 * (ifmgd->assocreq_ies_len + |
895 | ifmgd->assocresp_ies_len), GFP_KERNEL); | |
74af0250 LT |
896 | if (!buf) |
897 | return; | |
898 | ||
899 | len = sprintf(buf, "ASSOCINFO("); | |
46900298 | 900 | if (ifmgd->assocreq_ies) { |
74af0250 | 901 | len += sprintf(buf + len, "ReqIEs="); |
46900298 | 902 | for (i = 0; i < ifmgd->assocreq_ies_len; i++) { |
74af0250 | 903 | len += sprintf(buf + len, "%02x", |
46900298 | 904 | ifmgd->assocreq_ies[i]); |
74af0250 | 905 | } |
f0706e82 | 906 | } |
46900298 JB |
907 | if (ifmgd->assocresp_ies) { |
908 | if (ifmgd->assocreq_ies) | |
74af0250 LT |
909 | len += sprintf(buf + len, " "); |
910 | len += sprintf(buf + len, "RespIEs="); | |
46900298 | 911 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 912 | len += sprintf(buf + len, "%02x", |
46900298 | 913 | ifmgd->assocresp_ies[i]); |
74af0250 | 914 | } |
f0706e82 | 915 | } |
74af0250 LT |
916 | len += sprintf(buf + len, ")"); |
917 | ||
918 | if (len > IW_CUSTOM_MAX) { | |
919 | len = sprintf(buf, "ASSOCRESPIE="); | |
46900298 | 920 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 921 | len += sprintf(buf + len, "%02x", |
46900298 | 922 | ifmgd->assocresp_ies[i]); |
74af0250 LT |
923 | } |
924 | } | |
925 | ||
ad788b5e JL |
926 | if (len <= IW_CUSTOM_MAX) { |
927 | memset(&wrqu, 0, sizeof(wrqu)); | |
928 | wrqu.data.length = len; | |
929 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); | |
930 | } | |
74af0250 LT |
931 | |
932 | kfree(buf); | |
f0706e82 JB |
933 | } |
934 | ||
935 | ||
f698d856 | 936 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
ae5eb026 | 937 | u32 bss_info_changed) |
f0706e82 | 938 | { |
46900298 | 939 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 940 | struct ieee80211_local *local = sdata->local; |
38668c05 | 941 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 942 | |
c2b13452 | 943 | struct ieee80211_bss *bss; |
d6f2da5b | 944 | |
ae5eb026 | 945 | bss_info_changed |= BSS_CHANGED_ASSOC; |
46900298 | 946 | ifmgd->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 947 | |
46900298 | 948 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
f5e5bf25 | 949 | conf->channel->center_freq, |
46900298 | 950 | ifmgd->ssid, ifmgd->ssid_len); |
f5e5bf25 TW |
951 | if (bss) { |
952 | /* set timing information */ | |
00d3f14c JB |
953 | sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; |
954 | sdata->vif.bss_conf.timestamp = bss->cbss.tsf; | |
bda3933a | 955 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
21c0cbe7 | 956 | |
57c4d7b4 | 957 | bss_info_changed |= BSS_CHANGED_BEACON_INT; |
ae5eb026 | 958 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
00d3f14c | 959 | bss->cbss.capability, bss->has_erp_value, bss->erp_value); |
9ac19a90 | 960 | |
04de8381 KV |
961 | cfg80211_hold_bss(&bss->cbss); |
962 | ||
9ac19a90 | 963 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
964 | } |
965 | ||
46900298 JB |
966 | ifmgd->flags |= IEEE80211_STA_PREV_BSSID_SET; |
967 | memcpy(ifmgd->prev_bssid, sdata->u.mgd.bssid, ETH_ALEN); | |
968 | ieee80211_sta_send_associnfo(sdata); | |
9306102e | 969 | |
46900298 | 970 | ifmgd->last_probe = jiffies; |
9ac19a90 | 971 | ieee80211_led_assoc(local, 1); |
9306102e | 972 | |
bda3933a | 973 | sdata->vif.bss_conf.assoc = 1; |
96dd22ac JB |
974 | /* |
975 | * For now just always ask the driver to update the basic rateset | |
976 | * when we have associated, we aren't checking whether it actually | |
977 | * changed or not. | |
978 | */ | |
ae5eb026 | 979 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
9cef8737 JB |
980 | |
981 | /* And the BSSID changed - we're associated now */ | |
982 | bss_info_changed |= BSS_CHANGED_BSSID; | |
983 | ||
ae5eb026 | 984 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); |
f0706e82 | 985 | |
965bedad | 986 | /* will be same as sdata */ |
04fe2037 JB |
987 | if (local->ps_sdata) { |
988 | mutex_lock(&local->iflist_mtx); | |
989 | ieee80211_recalc_ps(local, -1); | |
990 | mutex_unlock(&local->iflist_mtx); | |
991 | } | |
e0cb686f | 992 | |
9ac19a90 JB |
993 | netif_tx_start_all_queues(sdata->dev); |
994 | netif_carrier_on(sdata->dev); | |
f0706e82 | 995 | |
46900298 | 996 | ieee80211_sta_send_apinfo(sdata); |
f0706e82 JB |
997 | } |
998 | ||
46900298 | 999 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1000 | { |
46900298 | 1001 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1002 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
1003 | |
1004 | ifmgd->direct_probe_tries++; | |
1005 | if (ifmgd->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 1006 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
46900298 JB |
1007 | sdata->dev->name, ifmgd->bssid); |
1008 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1009 | ieee80211_recalc_idle(local); |
e61f2340 | 1010 | cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid); |
7a947080 VT |
1011 | |
1012 | /* | |
1013 | * Most likely AP is not in the range so remove the | |
1014 | * bss information associated to the AP | |
1015 | */ | |
46900298 | 1016 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1017 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1018 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1019 | |
1020 | /* | |
1021 | * We might have a pending scan which had no chance to run yet | |
1022 | * due to state == IEEE80211_STA_MLME_DIRECT_PROBE. | |
1023 | * Hence, queue the STAs work again | |
1024 | */ | |
1025 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1026 | return; |
1027 | } | |
f0706e82 | 1028 | |
0c68ae26 | 1029 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
46900298 JB |
1030 | sdata->dev->name, ifmgd->bssid, |
1031 | ifmgd->direct_probe_tries); | |
f0706e82 | 1032 | |
46900298 | 1033 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 1034 | |
9ac19a90 JB |
1035 | /* Direct probe is sent to broadcast address as some APs |
1036 | * will not answer to direct packet in unassociated state. | |
1037 | */ | |
1038 | ieee80211_send_probe_req(sdata, NULL, | |
70692ad2 | 1039 | ifmgd->ssid, ifmgd->ssid_len, NULL, 0); |
9ac19a90 | 1040 | |
46900298 | 1041 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
60f8b39c | 1042 | } |
f0706e82 | 1043 | |
9ac19a90 | 1044 | |
46900298 | 1045 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1046 | { |
46900298 | 1047 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1048 | struct ieee80211_local *local = sdata->local; |
636a5d36 JM |
1049 | u8 *ies; |
1050 | size_t ies_len; | |
46900298 JB |
1051 | |
1052 | ifmgd->auth_tries++; | |
1053 | if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 1054 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
9ac19a90 | 1055 | " timed out\n", |
46900298 JB |
1056 | sdata->dev->name, ifmgd->bssid); |
1057 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1058 | ieee80211_recalc_idle(local); |
1965c853 | 1059 | cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid); |
46900298 | 1060 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1061 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1062 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1063 | |
1064 | /* | |
1065 | * We might have a pending scan which had no chance to run yet | |
1066 | * due to state == IEEE80211_STA_MLME_AUTHENTICATE. | |
1067 | * Hence, queue the STAs work again | |
1068 | */ | |
1069 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1070 | return; |
1071 | } | |
f0706e82 | 1072 | |
46900298 | 1073 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
0c68ae26 | 1074 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
46900298 | 1075 | sdata->dev->name, ifmgd->bssid); |
f0706e82 | 1076 | |
636a5d36 JM |
1077 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
1078 | ies = ifmgd->sme_auth_ie; | |
1079 | ies_len = ifmgd->sme_auth_ie_len; | |
1080 | } else { | |
1081 | ies = NULL; | |
1082 | ies_len = 0; | |
1083 | } | |
1084 | ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, ies, ies_len, | |
46900298 JB |
1085 | ifmgd->bssid, 0); |
1086 | ifmgd->auth_transaction = 2; | |
9ac19a90 | 1087 | |
46900298 | 1088 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
f0706e82 JB |
1089 | } |
1090 | ||
5925d976 VN |
1091 | /* |
1092 | * The disassoc 'reason' argument can be either our own reason | |
1093 | * if self disconnected or a reason code from the AP. | |
1094 | */ | |
aa458d17 | 1095 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
46900298 JB |
1096 | bool deauth, bool self_disconnected, |
1097 | u16 reason) | |
aa458d17 | 1098 | { |
46900298 | 1099 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 | 1100 | struct ieee80211_local *local = sdata->local; |
04de8381 KV |
1101 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
1102 | struct ieee80211_bss *bss; | |
aa458d17 | 1103 | struct sta_info *sta; |
e0cb686f | 1104 | u32 changed = 0, config_changed = 0; |
aa458d17 TW |
1105 | |
1106 | rcu_read_lock(); | |
1107 | ||
46900298 | 1108 | sta = sta_info_get(local, ifmgd->bssid); |
aa458d17 TW |
1109 | if (!sta) { |
1110 | rcu_read_unlock(); | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | if (deauth) { | |
46900298 JB |
1115 | ifmgd->direct_probe_tries = 0; |
1116 | ifmgd->auth_tries = 0; | |
aa458d17 | 1117 | } |
46900298 JB |
1118 | ifmgd->assoc_scan_tries = 0; |
1119 | ifmgd->assoc_tries = 0; | |
aa458d17 | 1120 | |
24e64622 | 1121 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
1122 | netif_carrier_off(sdata->dev); |
1123 | ||
2dace10e | 1124 | ieee80211_sta_tear_down_BA_sessions(sta); |
aa458d17 | 1125 | |
04de8381 KV |
1126 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
1127 | conf->channel->center_freq, | |
1128 | ifmgd->ssid, ifmgd->ssid_len); | |
1129 | ||
1130 | if (bss) { | |
1131 | cfg80211_unhold_bss(&bss->cbss); | |
1132 | ieee80211_rx_bss_put(local, bss); | |
1133 | } | |
1134 | ||
aa458d17 TW |
1135 | if (self_disconnected) { |
1136 | if (deauth) | |
ef422bc0 JB |
1137 | ieee80211_send_deauth_disassoc(sdata, |
1138 | IEEE80211_STYPE_DEAUTH, reason); | |
aa458d17 | 1139 | else |
ef422bc0 JB |
1140 | ieee80211_send_deauth_disassoc(sdata, |
1141 | IEEE80211_STYPE_DISASSOC, reason); | |
aa458d17 TW |
1142 | } |
1143 | ||
46900298 | 1144 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; |
f5e5bf25 TW |
1145 | changed |= ieee80211_reset_erp_info(sdata); |
1146 | ||
f5e5bf25 | 1147 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
1148 | changed |= BSS_CHANGED_ASSOC; |
1149 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 1150 | |
46900298 | 1151 | ieee80211_sta_send_apinfo(sdata); |
aa458d17 | 1152 | |
7a947080 | 1153 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) { |
46900298 JB |
1154 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
1155 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, | |
7a947080 | 1156 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1157 | ifmgd->ssid, ifmgd->ssid_len); |
7a947080 | 1158 | } |
aa458d17 | 1159 | |
aa458d17 TW |
1160 | rcu_read_unlock(); |
1161 | ||
aa837e1d JB |
1162 | ieee80211_set_wmm_default(sdata); |
1163 | ||
5cff20e6 JB |
1164 | ieee80211_recalc_idle(local); |
1165 | ||
4797938c | 1166 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
094d05dc | 1167 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
e0cb686f | 1168 | |
413ad50a JB |
1169 | /* on the next assoc, re-program HT parameters */ |
1170 | sdata->ht_opmode_valid = false; | |
1171 | ||
a8302de9 VT |
1172 | local->power_constr_level = 0; |
1173 | ||
520eb820 KV |
1174 | del_timer_sync(&local->dynamic_ps_timer); |
1175 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
1176 | ||
e0cb686f KV |
1177 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
1178 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1179 | config_changed |= IEEE80211_CONF_CHANGE_PS; | |
1180 | } | |
ae5eb026 | 1181 | |
e0cb686f | 1182 | ieee80211_hw_config(local, config_changed); |
9cef8737 JB |
1183 | |
1184 | /* And the BSSID changed -- not very interesting here */ | |
1185 | changed |= BSS_CHANGED_BSSID; | |
ae5eb026 | 1186 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 TW |
1187 | |
1188 | rcu_read_lock(); | |
1189 | ||
46900298 | 1190 | sta = sta_info_get(local, ifmgd->bssid); |
8e268e47 TW |
1191 | if (!sta) { |
1192 | rcu_read_unlock(); | |
1193 | return; | |
1194 | } | |
1195 | ||
1196 | sta_info_unlink(&sta); | |
1197 | ||
1198 | rcu_read_unlock(); | |
1199 | ||
1200 | sta_info_destroy(sta); | |
aa458d17 | 1201 | } |
f0706e82 | 1202 | |
9ac19a90 JB |
1203 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
1204 | { | |
1205 | if (!sdata || !sdata->default_key || | |
1206 | sdata->default_key->conf.alg != ALG_WEP) | |
1207 | return 0; | |
1208 | return 1; | |
1209 | } | |
1210 | ||
46900298 | 1211 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1212 | { |
46900298 | 1213 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1214 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 1215 | struct ieee80211_bss *bss; |
5b98b1f7 JB |
1216 | int bss_privacy; |
1217 | int wep_privacy; | |
1218 | int privacy_invoked; | |
f0706e82 | 1219 | |
7986cf95 | 1220 | if (!ifmgd || (ifmgd->flags & IEEE80211_STA_EXT_SME)) |
f0706e82 JB |
1221 | return 0; |
1222 | ||
46900298 | 1223 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
8318d78a | 1224 | local->hw.conf.channel->center_freq, |
46900298 | 1225 | ifmgd->ssid, ifmgd->ssid_len); |
f0706e82 JB |
1226 | if (!bss) |
1227 | return 0; | |
1228 | ||
00d3f14c | 1229 | bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 1230 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
46900298 | 1231 | privacy_invoked = !!(ifmgd->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 1232 | |
3e122be0 | 1233 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 1234 | |
5b98b1f7 JB |
1235 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
1236 | return 0; | |
1237 | ||
1238 | return 1; | |
f0706e82 JB |
1239 | } |
1240 | ||
46900298 | 1241 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1242 | { |
46900298 | 1243 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 1244 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
1245 | |
1246 | ifmgd->assoc_tries++; | |
1247 | if (ifmgd->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0c68ae26 | 1248 | printk(KERN_DEBUG "%s: association with AP %pM" |
f0706e82 | 1249 | " timed out\n", |
46900298 JB |
1250 | sdata->dev->name, ifmgd->bssid); |
1251 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1252 | ieee80211_recalc_idle(local); |
1965c853 | 1253 | cfg80211_send_assoc_timeout(sdata->dev, ifmgd->bssid); |
46900298 | 1254 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 1255 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 1256 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
1257 | /* |
1258 | * We might have a pending scan which had no chance to run yet | |
1259 | * due to state == IEEE80211_STA_MLME_ASSOCIATE. | |
1260 | * Hence, queue the STAs work again | |
1261 | */ | |
1262 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1263 | return; |
1264 | } | |
1265 | ||
46900298 | 1266 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
0c68ae26 | 1267 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
46900298 JB |
1268 | sdata->dev->name, ifmgd->bssid); |
1269 | if (ieee80211_privacy_mismatch(sdata)) { | |
f0706e82 | 1270 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 1271 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
46900298 | 1272 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
5cff20e6 | 1273 | ieee80211_recalc_idle(local); |
f0706e82 JB |
1274 | return; |
1275 | } | |
1276 | ||
46900298 | 1277 | ieee80211_send_assoc(sdata); |
f0706e82 | 1278 | |
46900298 | 1279 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
f0706e82 JB |
1280 | } |
1281 | ||
3cf335d5 KV |
1282 | void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, |
1283 | struct ieee80211_hdr *hdr) | |
1284 | { | |
1285 | /* | |
1286 | * We can postpone the mgd.timer whenever receiving unicast frames | |
1287 | * from AP because we know that the connection is working both ways | |
1288 | * at that time. But multicast frames (and hence also beacons) must | |
1289 | * be ignored here, because we need to trigger the timer during | |
1290 | * data idle periods for sending the periodical probe request to | |
1291 | * the AP. | |
1292 | */ | |
1293 | if (!is_multicast_ether_addr(hdr->addr1)) | |
1294 | mod_timer(&sdata->u.mgd.timer, | |
1295 | jiffies + IEEE80211_MONITORING_INTERVAL); | |
1296 | } | |
f0706e82 | 1297 | |
04de8381 KV |
1298 | void ieee80211_beacon_loss_work(struct work_struct *work) |
1299 | { | |
1300 | struct ieee80211_sub_if_data *sdata = | |
1301 | container_of(work, struct ieee80211_sub_if_data, | |
1302 | u.mgd.beacon_loss_work); | |
1303 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1304 | ||
34bfc411 JB |
1305 | /* |
1306 | * The driver has already reported this event and we have | |
1307 | * already sent a probe request. Maybe the AP died and the | |
1308 | * driver keeps reporting until we disassociate... We have | |
1309 | * to ignore that because otherwise we would continually | |
1310 | * reset the timer and never check whether we received a | |
1311 | * probe response! | |
1312 | */ | |
1313 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) | |
1314 | return; | |
1315 | ||
a860402d MB |
1316 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
1317 | if (net_ratelimit()) { | |
1318 | printk(KERN_DEBUG "%s: driver reports beacon loss from AP %pM " | |
1319 | "- sending probe request\n", sdata->dev->name, | |
1320 | sdata->u.mgd.bssid); | |
1321 | } | |
1322 | #endif | |
04de8381 KV |
1323 | |
1324 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; | |
1325 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, | |
1326 | ifmgd->ssid_len, NULL, 0); | |
1327 | ||
e0502de6 | 1328 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT); |
04de8381 KV |
1329 | } |
1330 | ||
1331 | void ieee80211_beacon_loss(struct ieee80211_vif *vif) | |
1332 | { | |
1333 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
1334 | ||
1335 | queue_work(sdata->local->hw.workqueue, | |
1336 | &sdata->u.mgd.beacon_loss_work); | |
1337 | } | |
1338 | EXPORT_SYMBOL(ieee80211_beacon_loss); | |
1339 | ||
46900298 | 1340 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1341 | { |
46900298 | 1342 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1343 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1344 | struct sta_info *sta; |
15b7b062 | 1345 | bool disassoc = false; |
f0706e82 JB |
1346 | |
1347 | /* TODO: start monitoring current AP signal quality and number of | |
1348 | * missed beacons. Scan other channels every now and then and search | |
1349 | * for better APs. */ | |
1350 | /* TODO: remove expired BSSes */ | |
1351 | ||
46900298 | 1352 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 1353 | |
d0709a65 JB |
1354 | rcu_read_lock(); |
1355 | ||
46900298 | 1356 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 1357 | if (!sta) { |
0c68ae26 | 1358 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
46900298 | 1359 | sdata->dev->name, ifmgd->bssid); |
15b7b062 KV |
1360 | disassoc = true; |
1361 | goto unlock; | |
1362 | } | |
1363 | ||
1364 | if ((ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) && | |
e0502de6 | 1365 | time_after(jiffies, sta->last_rx + IEEE80211_PROBE_WAIT)) { |
15b7b062 KV |
1366 | printk(KERN_DEBUG "%s: no probe response from AP %pM " |
1367 | "- disassociating\n", | |
1368 | sdata->dev->name, ifmgd->bssid); | |
1369 | disassoc = true; | |
1370 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; | |
1371 | goto unlock; | |
1372 | } | |
1373 | ||
04de8381 KV |
1374 | /* |
1375 | * Beacon filtering is only enabled with power save and then the | |
1376 | * stack should not check for beacon loss. | |
1377 | */ | |
1378 | if (!((local->hw.flags & IEEE80211_HW_BEACON_FILTER) && | |
1379 | (local->hw.conf.flags & IEEE80211_CONF_PS)) && | |
1380 | time_after(jiffies, | |
15b7b062 | 1381 | ifmgd->last_beacon + IEEE80211_MONITORING_INTERVAL)) { |
a860402d MB |
1382 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
1383 | if (net_ratelimit()) { | |
1384 | printk(KERN_DEBUG "%s: beacon loss from AP %pM " | |
1385 | "- sending probe request\n", | |
1386 | sdata->dev->name, ifmgd->bssid); | |
1387 | } | |
1388 | #endif | |
15b7b062 KV |
1389 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; |
1390 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, | |
1391 | ifmgd->ssid_len, NULL, 0); | |
4ef699fb | 1392 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_PROBE_WAIT); |
15b7b062 | 1393 | goto unlock; |
15b7b062 KV |
1394 | } |
1395 | ||
1396 | if (time_after(jiffies, sta->last_rx + IEEE80211_PROBE_IDLE_TIME)) { | |
1397 | ifmgd->flags |= IEEE80211_STA_PROBEREQ_POLL; | |
1398 | ieee80211_send_probe_req(sdata, ifmgd->bssid, ifmgd->ssid, | |
1399 | ifmgd->ssid_len, NULL, 0); | |
f0706e82 | 1400 | } |
d0709a65 | 1401 | |
4ef699fb JB |
1402 | if (!disassoc) |
1403 | mod_timer(&ifmgd->timer, | |
1404 | jiffies + IEEE80211_MONITORING_INTERVAL); | |
1405 | ||
15b7b062 | 1406 | unlock: |
d0709a65 JB |
1407 | rcu_read_unlock(); |
1408 | ||
7a947080 | 1409 | if (disassoc) |
46900298 | 1410 | ieee80211_set_disassoc(sdata, true, true, |
60f8b39c | 1411 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
f0706e82 JB |
1412 | } |
1413 | ||
1414 | ||
46900298 | 1415 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1416 | { |
46900298 JB |
1417 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
1418 | ||
f698d856 | 1419 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
46900298 | 1420 | ifmgd->flags |= IEEE80211_STA_AUTHENTICATED; |
636a5d36 JM |
1421 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
1422 | /* Wait for SME to request association */ | |
1423 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1424 | ieee80211_recalc_idle(sdata->local); |
636a5d36 JM |
1425 | } else |
1426 | ieee80211_associate(sdata); | |
f0706e82 JB |
1427 | } |
1428 | ||
1429 | ||
f698d856 | 1430 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1431 | struct ieee80211_mgmt *mgmt, |
1432 | size_t len) | |
1433 | { | |
1434 | u8 *pos; | |
1435 | struct ieee802_11_elems elems; | |
1436 | ||
f0706e82 | 1437 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1438 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1439 | if (!elems.challenge) |
f0706e82 | 1440 | return; |
46900298 JB |
1441 | ieee80211_send_auth(sdata, 3, sdata->u.mgd.auth_alg, |
1442 | elems.challenge - 2, elems.challenge_len + 2, | |
1443 | sdata->u.mgd.bssid, 1); | |
1444 | sdata->u.mgd.auth_transaction = 4; | |
fe3d2c3f JB |
1445 | } |
1446 | ||
f698d856 | 1447 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1448 | struct ieee80211_mgmt *mgmt, |
1449 | size_t len) | |
1450 | { | |
46900298 | 1451 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1452 | u16 auth_alg, auth_transaction, status_code; |
1453 | ||
46900298 | 1454 | if (ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE) |
f0706e82 | 1455 | return; |
f0706e82 | 1456 | |
f4ea83dd | 1457 | if (len < 24 + 6) |
f0706e82 | 1458 | return; |
f0706e82 | 1459 | |
46900298 | 1460 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1461 | return; |
f0706e82 | 1462 | |
46900298 | 1463 | if (memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1464 | return; |
f0706e82 JB |
1465 | |
1466 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1467 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1468 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1469 | ||
46900298 JB |
1470 | if (auth_alg != ifmgd->auth_alg || |
1471 | auth_transaction != ifmgd->auth_transaction) | |
f0706e82 | 1472 | return; |
f0706e82 JB |
1473 | |
1474 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1475 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1476 | u8 algs[3]; | |
1477 | const int num_algs = ARRAY_SIZE(algs); | |
1478 | int i, pos; | |
1479 | algs[0] = algs[1] = algs[2] = 0xff; | |
46900298 | 1480 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
f0706e82 | 1481 | algs[0] = WLAN_AUTH_OPEN; |
46900298 | 1482 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
f0706e82 | 1483 | algs[1] = WLAN_AUTH_SHARED_KEY; |
46900298 | 1484 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
f0706e82 | 1485 | algs[2] = WLAN_AUTH_LEAP; |
46900298 | 1486 | if (ifmgd->auth_alg == WLAN_AUTH_OPEN) |
f0706e82 | 1487 | pos = 0; |
46900298 | 1488 | else if (ifmgd->auth_alg == WLAN_AUTH_SHARED_KEY) |
f0706e82 JB |
1489 | pos = 1; |
1490 | else | |
1491 | pos = 2; | |
1492 | for (i = 0; i < num_algs; i++) { | |
1493 | pos++; | |
1494 | if (pos >= num_algs) | |
1495 | pos = 0; | |
46900298 | 1496 | if (algs[pos] == ifmgd->auth_alg || |
f0706e82 JB |
1497 | algs[pos] == 0xff) |
1498 | continue; | |
1499 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1500 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 | 1501 | continue; |
46900298 | 1502 | ifmgd->auth_alg = algs[pos]; |
f0706e82 JB |
1503 | break; |
1504 | } | |
1505 | } | |
1506 | return; | |
1507 | } | |
1508 | ||
46900298 | 1509 | switch (ifmgd->auth_alg) { |
f0706e82 JB |
1510 | case WLAN_AUTH_OPEN: |
1511 | case WLAN_AUTH_LEAP: | |
636a5d36 | 1512 | case WLAN_AUTH_FT: |
46900298 | 1513 | ieee80211_auth_completed(sdata); |
6039f6d2 | 1514 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1515 | break; |
1516 | case WLAN_AUTH_SHARED_KEY: | |
6039f6d2 | 1517 | if (ifmgd->auth_transaction == 4) { |
46900298 | 1518 | ieee80211_auth_completed(sdata); |
6039f6d2 JM |
1519 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
1520 | } else | |
46900298 | 1521 | ieee80211_auth_challenge(sdata, mgmt, len); |
f0706e82 JB |
1522 | break; |
1523 | } | |
1524 | } | |
1525 | ||
1526 | ||
f698d856 | 1527 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1528 | struct ieee80211_mgmt *mgmt, |
1529 | size_t len) | |
1530 | { | |
46900298 | 1531 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1532 | u16 reason_code; |
1533 | ||
f4ea83dd | 1534 | if (len < 24 + 2) |
f0706e82 | 1535 | return; |
f0706e82 | 1536 | |
46900298 | 1537 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1538 | return; |
f0706e82 JB |
1539 | |
1540 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1541 | ||
46900298 | 1542 | if (ifmgd->flags & IEEE80211_STA_AUTHENTICATED) |
97c8b013 ZY |
1543 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
1544 | sdata->dev->name, reason_code); | |
f0706e82 | 1545 | |
636a5d36 JM |
1546 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1547 | (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || | |
1548 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1549 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)) { | |
46900298 JB |
1550 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
1551 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1552 | IEEE80211_RETRY_AUTH_INTERVAL); |
1553 | } | |
1554 | ||
46900298 JB |
1555 | ieee80211_set_disassoc(sdata, true, false, 0); |
1556 | ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED; | |
53b46b84 | 1557 | cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1558 | } |
1559 | ||
1560 | ||
f698d856 | 1561 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1562 | struct ieee80211_mgmt *mgmt, |
1563 | size_t len) | |
1564 | { | |
46900298 | 1565 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1566 | u16 reason_code; |
1567 | ||
f4ea83dd | 1568 | if (len < 24 + 2) |
f0706e82 | 1569 | return; |
f0706e82 | 1570 | |
46900298 | 1571 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1572 | return; |
f0706e82 JB |
1573 | |
1574 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1575 | ||
46900298 | 1576 | if (ifmgd->flags & IEEE80211_STA_ASSOCIATED) |
97c8b013 ZY |
1577 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
1578 | sdata->dev->name, reason_code); | |
f0706e82 | 1579 | |
636a5d36 JM |
1580 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1581 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
46900298 JB |
1582 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
1583 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1584 | IEEE80211_RETRY_AUTH_INTERVAL); |
1585 | } | |
1586 | ||
46900298 | 1587 | ieee80211_set_disassoc(sdata, false, false, reason_code); |
53b46b84 | 1588 | cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1589 | } |
1590 | ||
1591 | ||
471b3efd | 1592 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1593 | struct ieee80211_mgmt *mgmt, |
1594 | size_t len, | |
1595 | int reassoc) | |
1596 | { | |
46900298 | 1597 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 1598 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1599 | struct ieee80211_supported_band *sband; |
f0706e82 | 1600 | struct sta_info *sta; |
881d948c | 1601 | u32 rates, basic_rates; |
f0706e82 JB |
1602 | u16 capab_info, status_code, aid; |
1603 | struct ieee802_11_elems elems; | |
bda3933a | 1604 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 | 1605 | u8 *pos; |
ae5eb026 | 1606 | u32 changed = 0; |
f0706e82 | 1607 | int i, j; |
ddf4ac53 | 1608 | bool have_higher_than_11mbit = false, newsta = false; |
ae5eb026 | 1609 | u16 ap_ht_cap_flags; |
f0706e82 JB |
1610 | |
1611 | /* AssocResp and ReassocResp have identical structure, so process both | |
1612 | * of them in this function. */ | |
1613 | ||
46900298 | 1614 | if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1615 | return; |
f0706e82 | 1616 | |
f4ea83dd | 1617 | if (len < 24 + 6) |
f0706e82 | 1618 | return; |
f0706e82 | 1619 | |
46900298 | 1620 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1621 | return; |
f0706e82 JB |
1622 | |
1623 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1624 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1625 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1626 | |
0c68ae26 | 1627 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
f0706e82 | 1628 | "status=%d aid=%d)\n", |
0c68ae26 | 1629 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
ddd68587 | 1630 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 | 1631 | |
63a5ab82 JM |
1632 | pos = mgmt->u.assoc_resp.variable; |
1633 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
1634 | ||
1635 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
f797eb7e JM |
1636 | elems.timeout_int && elems.timeout_int_len == 5 && |
1637 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
63a5ab82 | 1638 | u32 tu, ms; |
f797eb7e | 1639 | tu = get_unaligned_le32(elems.timeout_int + 1); |
63a5ab82 JM |
1640 | ms = tu * 1024 / 1000; |
1641 | printk(KERN_DEBUG "%s: AP rejected association temporarily; " | |
1642 | "comeback duration %u TU (%u ms)\n", | |
1643 | sdata->dev->name, tu, ms); | |
1644 | if (ms > IEEE80211_ASSOC_TIMEOUT) | |
46900298 | 1645 | mod_timer(&ifmgd->timer, |
63a5ab82 JM |
1646 | jiffies + msecs_to_jiffies(ms)); |
1647 | return; | |
1648 | } | |
1649 | ||
f0706e82 JB |
1650 | if (status_code != WLAN_STATUS_SUCCESS) { |
1651 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1652 | sdata->dev->name, status_code); |
8a69aa93 DD |
1653 | /* if this was a reassociation, ensure we try a "full" |
1654 | * association next time. This works around some broken APs | |
1655 | * which do not correctly reject reassociation requests. */ | |
46900298 | 1656 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
66174bbe JM |
1657 | cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); |
1658 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { | |
1659 | /* Wait for SME to decide what to do next */ | |
1660 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 1661 | ieee80211_recalc_idle(local); |
66174bbe | 1662 | } |
f0706e82 JB |
1663 | return; |
1664 | } | |
1665 | ||
1dd84aa2 JB |
1666 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1667 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1668 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1669 | aid &= ~(BIT(15) | BIT(14)); |
1670 | ||
f0706e82 JB |
1671 | if (!elems.supp_rates) { |
1672 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1673 | sdata->dev->name); |
f0706e82 JB |
1674 | return; |
1675 | } | |
1676 | ||
f698d856 | 1677 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
46900298 JB |
1678 | ifmgd->aid = aid; |
1679 | ifmgd->ap_capab = capab_info; | |
f0706e82 | 1680 | |
46900298 JB |
1681 | kfree(ifmgd->assocresp_ies); |
1682 | ifmgd->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
1683 | ifmgd->assocresp_ies = kmalloc(ifmgd->assocresp_ies_len, GFP_KERNEL); | |
1684 | if (ifmgd->assocresp_ies) | |
1685 | memcpy(ifmgd->assocresp_ies, pos, ifmgd->assocresp_ies_len); | |
f0706e82 | 1686 | |
d0709a65 JB |
1687 | rcu_read_lock(); |
1688 | ||
f0706e82 | 1689 | /* Add STA entry for the AP */ |
46900298 | 1690 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 1691 | if (!sta) { |
ddf4ac53 | 1692 | newsta = true; |
d0709a65 | 1693 | |
46900298 | 1694 | sta = sta_info_alloc(sdata, ifmgd->bssid, GFP_ATOMIC); |
73651ee6 JB |
1695 | if (!sta) { |
1696 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1697 | " the AP\n", sdata->dev->name); |
d0709a65 | 1698 | rcu_read_unlock(); |
f0706e82 JB |
1699 | return; |
1700 | } | |
f709fc69 | 1701 | |
60f8b39c JB |
1702 | /* update new sta with its last rx activity */ |
1703 | sta->last_rx = jiffies; | |
f709fc69 | 1704 | } |
f709fc69 | 1705 | |
60f8b39c JB |
1706 | /* |
1707 | * FIXME: Do we really need to update the sta_info's information here? | |
1708 | * We already know about the AP (we found it in our list) so it | |
1709 | * should already be filled with the right info, no? | |
1710 | * As is stands, all this is racy because typically we assume | |
1711 | * the information that is filled in here (except flags) doesn't | |
1712 | * change while a STA structure is alive. As such, it should move | |
1713 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1714 | */ | |
f709fc69 | 1715 | |
3f77316c JM |
1716 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP); |
1717 | if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) | |
1718 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); | |
05e5e883 | 1719 | |
60f8b39c JB |
1720 | rates = 0; |
1721 | basic_rates = 0; | |
1722 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1723 | |
60f8b39c JB |
1724 | for (i = 0; i < elems.supp_rates_len; i++) { |
1725 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
d61272cb | 1726 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
f709fc69 | 1727 | |
60f8b39c JB |
1728 | if (rate > 110) |
1729 | have_higher_than_11mbit = true; | |
1730 | ||
1731 | for (j = 0; j < sband->n_bitrates; j++) { | |
d61272cb | 1732 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1733 | rates |= BIT(j); |
d61272cb TW |
1734 | if (is_basic) |
1735 | basic_rates |= BIT(j); | |
1736 | break; | |
1737 | } | |
f709fc69 | 1738 | } |
f709fc69 LCC |
1739 | } |
1740 | ||
60f8b39c JB |
1741 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1742 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
7e0986c1 | 1743 | bool is_basic = !!(elems.ext_supp_rates[i] & 0x80); |
f0706e82 | 1744 | |
60f8b39c JB |
1745 | if (rate > 110) |
1746 | have_higher_than_11mbit = true; | |
f0706e82 | 1747 | |
60f8b39c | 1748 | for (j = 0; j < sband->n_bitrates; j++) { |
d61272cb | 1749 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1750 | rates |= BIT(j); |
d61272cb TW |
1751 | if (is_basic) |
1752 | basic_rates |= BIT(j); | |
1753 | break; | |
1754 | } | |
60f8b39c | 1755 | } |
1ebebea8 | 1756 | } |
f0706e82 | 1757 | |
323ce79a | 1758 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
bda3933a | 1759 | sdata->vif.bss_conf.basic_rates = basic_rates; |
60f8b39c JB |
1760 | |
1761 | /* cf. IEEE 802.11 9.2.12 */ | |
1762 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1763 | have_higher_than_11mbit) | |
1764 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1765 | else | |
1766 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1767 | |
e65c2263 S |
1768 | /* If TKIP/WEP is used, no need to parse AP's HT capabilities */ |
1769 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 | 1770 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
d9fe60de | 1771 | elems.ht_cap_elem, &sta->sta.ht_cap); |
ae5eb026 JB |
1772 | |
1773 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
f0706e82 | 1774 | |
4b7679a5 | 1775 | rate_control_rate_init(sta); |
f0706e82 | 1776 | |
46900298 | 1777 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
5394af4d JM |
1778 | set_sta_flags(sta, WLAN_STA_MFP); |
1779 | ||
ddf4ac53 | 1780 | if (elems.wmm_param) |
60f8b39c | 1781 | set_sta_flags(sta, WLAN_STA_WME); |
ddf4ac53 JB |
1782 | |
1783 | if (newsta) { | |
1784 | int err = sta_info_insert(sta); | |
1785 | if (err) { | |
1786 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1787 | " the AP (error %d)\n", sdata->dev->name, err); | |
1788 | rcu_read_unlock(); | |
1789 | return; | |
1790 | } | |
1791 | } | |
1792 | ||
1793 | rcu_read_unlock(); | |
1794 | ||
1795 | if (elems.wmm_param) | |
46900298 | 1796 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
60f8b39c | 1797 | elems.wmm_param_len); |
aa837e1d JB |
1798 | else |
1799 | ieee80211_set_wmm_default(sdata); | |
f0706e82 | 1800 | |
ae5eb026 | 1801 | if (elems.ht_info_elem && elems.wmm_param && |
46900298 JB |
1802 | (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
1803 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 JB |
1804 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
1805 | ap_ht_cap_flags); | |
1806 | ||
60f8b39c JB |
1807 | /* set AID and assoc capability, |
1808 | * ieee80211_set_associated() will tell the driver */ | |
1809 | bss_conf->aid = aid; | |
1810 | bss_conf->assoc_capability = capab_info; | |
46900298 | 1811 | ieee80211_set_associated(sdata, changed); |
f0706e82 | 1812 | |
15b7b062 KV |
1813 | /* |
1814 | * initialise the time of last beacon to be the association time, | |
1815 | * otherwise beacon loss check will trigger immediately | |
1816 | */ | |
1817 | ifmgd->last_beacon = jiffies; | |
1818 | ||
46900298 | 1819 | ieee80211_associated(sdata); |
6039f6d2 | 1820 | cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1821 | } |
1822 | ||
1823 | ||
98c8fccf JB |
1824 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1825 | struct ieee80211_mgmt *mgmt, | |
1826 | size_t len, | |
1827 | struct ieee80211_rx_status *rx_status, | |
1828 | struct ieee802_11_elems *elems, | |
1829 | bool beacon) | |
1830 | { | |
1831 | struct ieee80211_local *local = sdata->local; | |
1832 | int freq; | |
c2b13452 | 1833 | struct ieee80211_bss *bss; |
98c8fccf | 1834 | struct ieee80211_channel *channel; |
98c8fccf JB |
1835 | |
1836 | if (elems->ds_params && elems->ds_params_len == 1) | |
1837 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1838 | else | |
1839 | freq = rx_status->freq; | |
1840 | ||
1841 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1842 | ||
1843 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1844 | return; | |
1845 | ||
98c8fccf | 1846 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
2a519311 | 1847 | channel, beacon); |
98c8fccf JB |
1848 | if (!bss) |
1849 | return; | |
1850 | ||
c481ec97 | 1851 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
46900298 | 1852 | (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) { |
c481ec97 S |
1853 | struct ieee80211_channel_sw_ie *sw_elem = |
1854 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; | |
cc32abd4 | 1855 | ieee80211_sta_process_chanswitch(sdata, sw_elem, bss); |
c481ec97 S |
1856 | } |
1857 | ||
3e122be0 | 1858 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
1859 | } |
1860 | ||
1861 | ||
f698d856 | 1862 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1863 | struct ieee80211_mgmt *mgmt, |
1864 | size_t len, | |
1865 | struct ieee80211_rx_status *rx_status) | |
1866 | { | |
15b7b062 | 1867 | struct ieee80211_if_managed *ifmgd; |
ae6a44e3 EK |
1868 | size_t baselen; |
1869 | struct ieee802_11_elems elems; | |
1870 | ||
15b7b062 KV |
1871 | ifmgd = &sdata->u.mgd; |
1872 | ||
8e7cdbb6 TW |
1873 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
1874 | return; /* ignore ProbeResp to foreign address */ | |
1875 | ||
ae6a44e3 EK |
1876 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1877 | if (baselen > len) | |
1878 | return; | |
1879 | ||
1880 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1881 | &elems); | |
1882 | ||
98c8fccf | 1883 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
1884 | |
1885 | /* direct probe may be part of the association flow */ | |
16cf438a | 1886 | if (ifmgd->state == IEEE80211_STA_MLME_DIRECT_PROBE) { |
9859b81e RR |
1887 | printk(KERN_DEBUG "%s direct probe responded\n", |
1888 | sdata->dev->name); | |
46900298 | 1889 | ieee80211_authenticate(sdata); |
9859b81e | 1890 | } |
15b7b062 KV |
1891 | |
1892 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) | |
1893 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; | |
f0706e82 JB |
1894 | } |
1895 | ||
d91f36db JB |
1896 | /* |
1897 | * This is the canonical list of information elements we care about, | |
1898 | * the filter code also gives us all changes to the Microsoft OUI | |
1899 | * (00:50:F2) vendor IE which is used for WMM which we need to track. | |
1900 | * | |
1901 | * We implement beacon filtering in software since that means we can | |
1902 | * avoid processing the frame here and in cfg80211, and userspace | |
1903 | * will not be able to tell whether the hardware supports it or not. | |
1904 | * | |
1905 | * XXX: This list needs to be dynamic -- userspace needs to be able to | |
1906 | * add items it requires. It also needs to be able to tell us to | |
1907 | * look out for other vendor IEs. | |
1908 | */ | |
1909 | static const u64 care_about_ies = | |
1d4df3a5 JB |
1910 | (1ULL << WLAN_EID_COUNTRY) | |
1911 | (1ULL << WLAN_EID_ERP_INFO) | | |
1912 | (1ULL << WLAN_EID_CHANNEL_SWITCH) | | |
1913 | (1ULL << WLAN_EID_PWR_CONSTRAINT) | | |
1914 | (1ULL << WLAN_EID_HT_CAPABILITY) | | |
1915 | (1ULL << WLAN_EID_HT_INFORMATION); | |
d91f36db | 1916 | |
f698d856 | 1917 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1918 | struct ieee80211_mgmt *mgmt, |
1919 | size_t len, | |
1920 | struct ieee80211_rx_status *rx_status) | |
1921 | { | |
d91f36db | 1922 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1923 | size_t baselen; |
1924 | struct ieee802_11_elems elems; | |
f698d856 | 1925 | struct ieee80211_local *local = sdata->local; |
471b3efd | 1926 | u32 changed = 0; |
d91f36db | 1927 | bool erp_valid, directed_tim = false; |
7a5158ef | 1928 | u8 erp_value = 0; |
d91f36db | 1929 | u32 ncrc; |
f0706e82 | 1930 | |
ae6a44e3 EK |
1931 | /* Process beacon from the current BSS */ |
1932 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1933 | if (baselen > len) | |
1934 | return; | |
1935 | ||
d91f36db | 1936 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
f0706e82 | 1937 | return; |
f0706e82 | 1938 | |
46900298 JB |
1939 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) || |
1940 | memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) | |
f0706e82 JB |
1941 | return; |
1942 | ||
92778180 JM |
1943 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { |
1944 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
1945 | if (net_ratelimit()) { | |
1946 | printk(KERN_DEBUG "%s: cancelling probereq poll due " | |
1947 | "to a received beacon\n", sdata->dev->name); | |
1948 | } | |
1949 | #endif | |
1950 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; | |
1951 | } | |
1952 | ||
d91f36db JB |
1953 | ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); |
1954 | ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, | |
1955 | len - baselen, &elems, | |
1956 | care_about_ies, ncrc); | |
1957 | ||
1958 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
e7ec86f5 JB |
1959 | directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len, |
1960 | ifmgd->aid); | |
d91f36db | 1961 | |
30196673 JM |
1962 | if (ncrc != ifmgd->beacon_crc) { |
1963 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, | |
1964 | true); | |
d91f36db | 1965 | |
30196673 JM |
1966 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
1967 | elems.wmm_param_len); | |
1968 | } | |
fe3fa827 | 1969 | |
25c9c875 | 1970 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
1fb3606b | 1971 | if (directed_tim) { |
572e0012 KV |
1972 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
1973 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1974 | ieee80211_hw_config(local, | |
1975 | IEEE80211_CONF_CHANGE_PS); | |
1976 | ieee80211_send_nullfunc(local, sdata, 0); | |
1977 | } else { | |
1978 | local->pspolling = true; | |
1979 | ||
1980 | /* | |
1981 | * Here is assumed that the driver will be | |
1982 | * able to send ps-poll frame and receive a | |
1983 | * response even though power save mode is | |
1984 | * enabled, but some drivers might require | |
1985 | * to disable power save here. This needs | |
1986 | * to be investigated. | |
1987 | */ | |
1988 | ieee80211_send_pspoll(local, sdata); | |
1989 | } | |
a97b77b9 VN |
1990 | } |
1991 | } | |
7a5158ef | 1992 | |
30196673 JM |
1993 | if (ncrc == ifmgd->beacon_crc) |
1994 | return; | |
1995 | ifmgd->beacon_crc = ncrc; | |
1996 | ||
7a5158ef JB |
1997 | if (elems.erp_info && elems.erp_info_len >= 1) { |
1998 | erp_valid = true; | |
1999 | erp_value = elems.erp_info[0]; | |
2000 | } else { | |
2001 | erp_valid = false; | |
50c4afb9 | 2002 | } |
7a5158ef JB |
2003 | changed |= ieee80211_handle_bss_capability(sdata, |
2004 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
2005 | erp_valid, erp_value); | |
f0706e82 | 2006 | |
d3c990fb | 2007 | |
53d6f81c | 2008 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
46900298 | 2009 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) { |
ae5eb026 JB |
2010 | struct sta_info *sta; |
2011 | struct ieee80211_supported_band *sband; | |
2012 | u16 ap_ht_cap_flags; | |
2013 | ||
2014 | rcu_read_lock(); | |
2015 | ||
46900298 | 2016 | sta = sta_info_get(local, ifmgd->bssid); |
ae5eb026 JB |
2017 | if (!sta) { |
2018 | rcu_read_unlock(); | |
2019 | return; | |
2020 | } | |
2021 | ||
2022 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2023 | ||
2024 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, | |
2025 | elems.ht_cap_elem, &sta->sta.ht_cap); | |
2026 | ||
2027 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
2028 | ||
2029 | rcu_read_unlock(); | |
2030 | ||
2031 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, | |
2032 | ap_ht_cap_flags); | |
d3c990fb RR |
2033 | } |
2034 | ||
3f2355cb LR |
2035 | if (elems.country_elem) { |
2036 | /* Note we are only reviewing this on beacons | |
2037 | * for the BSSID we are associated to */ | |
2038 | regulatory_hint_11d(local->hw.wiphy, | |
2039 | elems.country_elem, elems.country_elem_len); | |
a8302de9 VT |
2040 | |
2041 | /* TODO: IBSS also needs this */ | |
2042 | if (elems.pwr_constr_elem) | |
2043 | ieee80211_handle_pwr_constr(sdata, | |
2044 | le16_to_cpu(mgmt->u.probe_resp.capab_info), | |
2045 | elems.pwr_constr_elem, | |
2046 | elems.pwr_constr_elem_len); | |
3f2355cb LR |
2047 | } |
2048 | ||
471b3efd | 2049 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2050 | } |
2051 | ||
46900298 JB |
2052 | ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, |
2053 | struct sk_buff *skb, | |
2054 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 2055 | { |
f698d856 | 2056 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2057 | struct ieee80211_mgmt *mgmt; |
2058 | u16 fc; | |
2059 | ||
2060 | if (skb->len < 24) | |
46900298 | 2061 | return RX_DROP_MONITOR; |
f0706e82 JB |
2062 | |
2063 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2064 | fc = le16_to_cpu(mgmt->frame_control); | |
2065 | ||
2066 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2067 | case IEEE80211_STYPE_PROBE_REQ: | |
2068 | case IEEE80211_STYPE_PROBE_RESP: | |
2069 | case IEEE80211_STYPE_BEACON: | |
2070 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); | |
2071 | case IEEE80211_STYPE_AUTH: | |
2072 | case IEEE80211_STYPE_ASSOC_RESP: | |
2073 | case IEEE80211_STYPE_REASSOC_RESP: | |
2074 | case IEEE80211_STYPE_DEAUTH: | |
2075 | case IEEE80211_STYPE_DISASSOC: | |
46900298 JB |
2076 | skb_queue_tail(&sdata->u.mgd.skb_queue, skb); |
2077 | queue_work(local->hw.workqueue, &sdata->u.mgd.work); | |
2078 | return RX_QUEUED; | |
f0706e82 JB |
2079 | } |
2080 | ||
46900298 | 2081 | return RX_DROP_MONITOR; |
f0706e82 JB |
2082 | } |
2083 | ||
f698d856 | 2084 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2085 | struct sk_buff *skb) |
2086 | { | |
2087 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
2088 | struct ieee80211_mgmt *mgmt; |
2089 | u16 fc; | |
2090 | ||
f0706e82 JB |
2091 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
2092 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2093 | fc = le16_to_cpu(mgmt->frame_control); | |
2094 | ||
46900298 JB |
2095 | switch (fc & IEEE80211_FCTL_STYPE) { |
2096 | case IEEE80211_STYPE_PROBE_RESP: | |
2097 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, | |
2098 | rx_status); | |
2099 | break; | |
2100 | case IEEE80211_STYPE_BEACON: | |
2101 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, | |
2102 | rx_status); | |
2103 | break; | |
2104 | case IEEE80211_STYPE_AUTH: | |
2105 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); | |
2106 | break; | |
2107 | case IEEE80211_STYPE_ASSOC_RESP: | |
2108 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 0); | |
2109 | break; | |
2110 | case IEEE80211_STYPE_REASSOC_RESP: | |
2111 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 1); | |
2112 | break; | |
2113 | case IEEE80211_STYPE_DEAUTH: | |
2114 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); | |
2115 | break; | |
2116 | case IEEE80211_STYPE_DISASSOC: | |
2117 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
2118 | break; | |
f0706e82 JB |
2119 | } |
2120 | ||
2121 | kfree_skb(skb); | |
2122 | } | |
2123 | ||
9c6bd790 | 2124 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 2125 | { |
60f8b39c JB |
2126 | struct ieee80211_sub_if_data *sdata = |
2127 | (struct ieee80211_sub_if_data *) data; | |
46900298 | 2128 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 2129 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2130 | |
5bb644a0 JB |
2131 | if (local->quiescing) { |
2132 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
2133 | return; | |
2134 | } | |
2135 | ||
46900298 JB |
2136 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
2137 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
2138 | } |
2139 | ||
46900298 | 2140 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2141 | { |
46900298 | 2142 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 2143 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2144 | |
24487981 JB |
2145 | /* Reset own TSF to allow time synchronization work. */ |
2146 | drv_reset_tsf(local); | |
f0706e82 | 2147 | |
46900298 | 2148 | ifmgd->wmm_last_param_set = -1; /* allow any WMM update */ |
f0706e82 JB |
2149 | |
2150 | ||
46900298 JB |
2151 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
2152 | ifmgd->auth_alg = WLAN_AUTH_OPEN; | |
2153 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2154 | ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2155 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2156 | ifmgd->auth_alg = WLAN_AUTH_LEAP; | |
636a5d36 JM |
2157 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_FT) |
2158 | ifmgd->auth_alg = WLAN_AUTH_FT; | |
f0706e82 | 2159 | else |
46900298 JB |
2160 | ifmgd->auth_alg = WLAN_AUTH_OPEN; |
2161 | ifmgd->auth_transaction = -1; | |
2162 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; | |
2163 | ifmgd->assoc_scan_tries = 0; | |
2164 | ifmgd->direct_probe_tries = 0; | |
2165 | ifmgd->auth_tries = 0; | |
2166 | ifmgd->assoc_tries = 0; | |
24e64622 | 2167 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 2168 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
2169 | } |
2170 | ||
46900298 | 2171 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2172 | { |
46900298 | 2173 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 2174 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 2175 | struct ieee80211_bss *bss; |
46900298 JB |
2176 | u8 *bssid = ifmgd->bssid, *ssid = ifmgd->ssid; |
2177 | u8 ssid_len = ifmgd->ssid_len; | |
00d3f14c JB |
2178 | u16 capa_mask = WLAN_CAPABILITY_ESS; |
2179 | u16 capa_val = WLAN_CAPABILITY_ESS; | |
2180 | struct ieee80211_channel *chan = local->oper_channel; | |
2181 | ||
636a5d36 JM |
2182 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
2183 | ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
00d3f14c JB |
2184 | IEEE80211_STA_AUTO_BSSID_SEL | |
2185 | IEEE80211_STA_AUTO_CHANNEL_SEL)) { | |
2186 | capa_mask |= WLAN_CAPABILITY_PRIVACY; | |
2187 | if (sdata->default_key) | |
2188 | capa_val |= WLAN_CAPABILITY_PRIVACY; | |
f0706e82 | 2189 | } |
9d139c81 | 2190 | |
46900298 | 2191 | if (ifmgd->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
00d3f14c JB |
2192 | chan = NULL; |
2193 | ||
46900298 | 2194 | if (ifmgd->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
00d3f14c JB |
2195 | bssid = NULL; |
2196 | ||
46900298 | 2197 | if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) { |
00d3f14c JB |
2198 | ssid = NULL; |
2199 | ssid_len = 0; | |
2200 | } | |
2201 | ||
2202 | bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, | |
2203 | bssid, ssid, ssid_len, | |
2204 | capa_mask, capa_val); | |
2205 | ||
2206 | if (bss) { | |
2207 | ieee80211_set_freq(sdata, bss->cbss.channel->center_freq); | |
46900298 | 2208 | if (!(ifmgd->flags & IEEE80211_STA_SSID_SET)) |
00d3f14c JB |
2209 | ieee80211_sta_set_ssid(sdata, bss->ssid, |
2210 | bss->ssid_len); | |
2211 | ieee80211_sta_set_bssid(sdata, bss->cbss.bssid); | |
2212 | ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len, | |
2213 | bss->supp_rates); | |
46900298 JB |
2214 | if (sdata->u.mgd.mfp == IEEE80211_MFP_REQUIRED) |
2215 | sdata->u.mgd.flags |= IEEE80211_STA_MFP_ENABLED; | |
fdfacf0a | 2216 | else |
46900298 | 2217 | sdata->u.mgd.flags &= ~IEEE80211_STA_MFP_ENABLED; |
f0706e82 | 2218 | |
9c6bd790 JB |
2219 | /* Send out direct probe if no probe resp was received or |
2220 | * the one we have is outdated | |
2221 | */ | |
00d3f14c JB |
2222 | if (!bss->last_probe_resp || |
2223 | time_after(jiffies, bss->last_probe_resp | |
9c6bd790 | 2224 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
46900298 | 2225 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
9c6bd790 | 2226 | else |
46900298 | 2227 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
f0706e82 | 2228 | |
00d3f14c | 2229 | ieee80211_rx_bss_put(local, bss); |
46900298 | 2230 | ieee80211_sta_reset_auth(sdata); |
9c6bd790 JB |
2231 | return 0; |
2232 | } else { | |
46900298 | 2233 | if (ifmgd->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
f3b85252 | 2234 | |
46900298 | 2235 | ifmgd->assoc_scan_tries++; |
af88b907 | 2236 | |
f3b85252 JB |
2237 | ieee80211_request_internal_scan(sdata, ifmgd->ssid, |
2238 | ssid_len); | |
af88b907 | 2239 | |
46900298 JB |
2240 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
2241 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
e374055a | 2242 | } else { |
46900298 JB |
2243 | ifmgd->assoc_scan_tries = 0; |
2244 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
5cff20e6 | 2245 | ieee80211_recalc_idle(local); |
e374055a | 2246 | } |
9c6bd790 JB |
2247 | } |
2248 | return -1; | |
2249 | } | |
2250 | ||
2251 | ||
2252 | static void ieee80211_sta_work(struct work_struct *work) | |
2253 | { | |
2254 | struct ieee80211_sub_if_data *sdata = | |
46900298 | 2255 | container_of(work, struct ieee80211_sub_if_data, u.mgd.work); |
9c6bd790 | 2256 | struct ieee80211_local *local = sdata->local; |
46900298 | 2257 | struct ieee80211_if_managed *ifmgd; |
9c6bd790 JB |
2258 | struct sk_buff *skb; |
2259 | ||
2260 | if (!netif_running(sdata->dev)) | |
2261 | return; | |
2262 | ||
c2b13452 | 2263 | if (local->sw_scanning || local->hw_scanning) |
9c6bd790 JB |
2264 | return; |
2265 | ||
46900298 | 2266 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 2267 | return; |
5bb644a0 JB |
2268 | |
2269 | /* | |
2270 | * Nothing should have been stuffed into the workqueue during | |
2271 | * the suspend->resume cycle. If this WARN is seen then there | |
2272 | * is a bug with either the driver suspend or something in | |
2273 | * mac80211 stuffing into the workqueue which we haven't yet | |
2274 | * cleared during mac80211's suspend cycle. | |
2275 | */ | |
2276 | if (WARN_ON(local->suspended)) | |
2277 | return; | |
2278 | ||
46900298 | 2279 | ifmgd = &sdata->u.mgd; |
f0706e82 | 2280 | |
46900298 | 2281 | while ((skb = skb_dequeue(&ifmgd->skb_queue))) |
9c6bd790 JB |
2282 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
2283 | ||
46900298 JB |
2284 | if (ifmgd->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
2285 | ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
2286 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE && | |
2287 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) { | |
f3b85252 JB |
2288 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
2289 | round_jiffies_relative(0)); | |
9c6bd790 | 2290 | return; |
f0706e82 JB |
2291 | } |
2292 | ||
46900298 JB |
2293 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request)) { |
2294 | if (ieee80211_sta_config_auth(sdata)) | |
9c6bd790 | 2295 | return; |
46900298 JB |
2296 | clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
2297 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request)) | |
9c6bd790 | 2298 | return; |
d6f2da5b | 2299 | |
5cff20e6 JB |
2300 | ieee80211_recalc_idle(local); |
2301 | ||
46900298 | 2302 | switch (ifmgd->state) { |
9c6bd790 JB |
2303 | case IEEE80211_STA_MLME_DISABLED: |
2304 | break; | |
2305 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
46900298 | 2306 | ieee80211_direct_probe(sdata); |
9c6bd790 JB |
2307 | break; |
2308 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
46900298 | 2309 | ieee80211_authenticate(sdata); |
9c6bd790 JB |
2310 | break; |
2311 | case IEEE80211_STA_MLME_ASSOCIATE: | |
46900298 | 2312 | ieee80211_associate(sdata); |
9c6bd790 JB |
2313 | break; |
2314 | case IEEE80211_STA_MLME_ASSOCIATED: | |
46900298 | 2315 | ieee80211_associated(sdata); |
9c6bd790 JB |
2316 | break; |
2317 | default: | |
2318 | WARN_ON(1); | |
2319 | break; | |
2320 | } | |
2321 | ||
46900298 | 2322 | if (ieee80211_privacy_mismatch(sdata)) { |
9c6bd790 JB |
2323 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
2324 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
2325 | ||
46900298 | 2326 | ieee80211_set_disassoc(sdata, false, true, |
9c6bd790 JB |
2327 | WLAN_REASON_UNSPECIFIED); |
2328 | } | |
f0706e82 JB |
2329 | } |
2330 | ||
9c6bd790 JB |
2331 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
2332 | { | |
ad935687 KV |
2333 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
2334 | /* | |
2335 | * Need to update last_beacon to avoid beacon loss | |
2336 | * test to trigger. | |
2337 | */ | |
2338 | sdata->u.mgd.last_beacon = jiffies; | |
2339 | ||
2340 | ||
9c6bd790 | 2341 | queue_work(sdata->local->hw.workqueue, |
46900298 | 2342 | &sdata->u.mgd.work); |
ad935687 | 2343 | } |
9c6bd790 | 2344 | } |
f0706e82 | 2345 | |
5bb644a0 JB |
2346 | #ifdef CONFIG_PM |
2347 | void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) | |
2348 | { | |
2349 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2350 | ||
2351 | /* | |
2352 | * we need to use atomic bitops for the running bits | |
2353 | * only because both timers might fire at the same | |
2354 | * time -- the code here is properly synchronised. | |
2355 | */ | |
2356 | ||
2357 | cancel_work_sync(&ifmgd->work); | |
2358 | cancel_work_sync(&ifmgd->beacon_loss_work); | |
2359 | if (del_timer_sync(&ifmgd->timer)) | |
2360 | set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); | |
2361 | ||
2362 | cancel_work_sync(&ifmgd->chswitch_work); | |
2363 | if (del_timer_sync(&ifmgd->chswitch_timer)) | |
2364 | set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); | |
2365 | } | |
2366 | ||
2367 | void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) | |
2368 | { | |
2369 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2370 | ||
2371 | if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) | |
2372 | add_timer(&ifmgd->timer); | |
2373 | if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) | |
2374 | add_timer(&ifmgd->chswitch_timer); | |
2375 | } | |
2376 | #endif | |
2377 | ||
9c6bd790 JB |
2378 | /* interface setup */ |
2379 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 2380 | { |
46900298 | 2381 | struct ieee80211_if_managed *ifmgd; |
bbbdff9e | 2382 | u32 hw_flags; |
988c0f72 | 2383 | |
46900298 JB |
2384 | ifmgd = &sdata->u.mgd; |
2385 | INIT_WORK(&ifmgd->work, ieee80211_sta_work); | |
2386 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); | |
04de8381 | 2387 | INIT_WORK(&ifmgd->beacon_loss_work, ieee80211_beacon_loss_work); |
46900298 | 2388 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, |
c481ec97 | 2389 | (unsigned long) sdata); |
46900298 | 2390 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 2391 | (unsigned long) sdata); |
46900298 | 2392 | skb_queue_head_init(&ifmgd->skb_queue); |
9c6bd790 | 2393 | |
46900298 JB |
2394 | ifmgd->capab = WLAN_CAPABILITY_ESS; |
2395 | ifmgd->auth_algs = IEEE80211_AUTH_ALG_OPEN | | |
9c6bd790 | 2396 | IEEE80211_AUTH_ALG_SHARED_KEY; |
46900298 | 2397 | ifmgd->flags |= IEEE80211_STA_CREATE_IBSS | |
9c6bd790 JB |
2398 | IEEE80211_STA_AUTO_BSSID_SEL | |
2399 | IEEE80211_STA_AUTO_CHANNEL_SEL; | |
176be728 | 2400 | if (sdata->local->hw.queues >= 4) |
46900298 | 2401 | ifmgd->flags |= IEEE80211_STA_WMM_ENABLED; |
bbbdff9e JB |
2402 | |
2403 | hw_flags = sdata->local->hw.flags; | |
2404 | ||
2405 | if (hw_flags & IEEE80211_HW_SUPPORTS_PS) { | |
2406 | ifmgd->powersave = CONFIG_MAC80211_DEFAULT_PS_VALUE; | |
2407 | sdata->local->hw.conf.dynamic_ps_timeout = 500; | |
2408 | } | |
f0706e82 JB |
2409 | } |
2410 | ||
9c6bd790 | 2411 | /* configuration hooks */ |
46900298 | 2412 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) |
60f8b39c | 2413 | { |
46900298 | 2414 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 2415 | struct ieee80211_local *local = sdata->local; |
60f8b39c | 2416 | |
46900298 | 2417 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 2418 | return; |
60f8b39c | 2419 | |
46900298 | 2420 | if ((ifmgd->flags & (IEEE80211_STA_BSSID_SET | |
9c6bd790 | 2421 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
46900298 | 2422 | (ifmgd->flags & (IEEE80211_STA_SSID_SET | |
9c6bd790 | 2423 | IEEE80211_STA_AUTO_SSID_SEL))) { |
60f8b39c | 2424 | |
46900298 JB |
2425 | if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) |
2426 | ieee80211_set_disassoc(sdata, true, true, | |
9c6bd790 | 2427 | WLAN_REASON_DEAUTH_LEAVING); |
60f8b39c | 2428 | |
636a5d36 JM |
2429 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) || |
2430 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) | |
2431 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
2432 | else if (ifmgd->flags & IEEE80211_STA_EXT_SME) | |
2433 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); | |
46900298 | 2434 | queue_work(local->hw.workqueue, &ifmgd->work); |
9c6bd790 JB |
2435 | } |
2436 | } | |
60f8b39c | 2437 | |
79f6440c AF |
2438 | int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata) |
2439 | { | |
2440 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
2441 | ||
79f6440c AF |
2442 | if (ifmgd->ssid_len) |
2443 | ifmgd->flags |= IEEE80211_STA_SSID_SET; | |
2444 | else | |
2445 | ifmgd->flags &= ~IEEE80211_STA_SSID_SET; | |
2446 | ||
2447 | return 0; | |
2448 | } | |
2449 | ||
9c6bd790 JB |
2450 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
2451 | { | |
46900298 | 2452 | struct ieee80211_if_managed *ifmgd; |
60f8b39c | 2453 | |
9c6bd790 JB |
2454 | if (len > IEEE80211_MAX_SSID_LEN) |
2455 | return -EINVAL; | |
2456 | ||
46900298 | 2457 | ifmgd = &sdata->u.mgd; |
9c6bd790 | 2458 | |
46900298 | 2459 | if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) { |
a299542e JM |
2460 | /* |
2461 | * Do not use reassociation if SSID is changed (different ESS). | |
2462 | */ | |
2463 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
46900298 JB |
2464 | memset(ifmgd->ssid, 0, sizeof(ifmgd->ssid)); |
2465 | memcpy(ifmgd->ssid, ssid, len); | |
2466 | ifmgd->ssid_len = len; | |
60f8b39c | 2467 | } |
60f8b39c | 2468 | |
79f6440c | 2469 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
2470 | } |
2471 | ||
2472 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) | |
2473 | { | |
46900298 JB |
2474 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
2475 | memcpy(ssid, ifmgd->ssid, ifmgd->ssid_len); | |
2476 | *len = ifmgd->ssid_len; | |
9c6bd790 JB |
2477 | return 0; |
2478 | } | |
2479 | ||
2480 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) | |
2481 | { | |
46900298 | 2482 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 2483 | |
dfe67012 | 2484 | if (is_valid_ether_addr(bssid)) { |
46900298 JB |
2485 | memcpy(ifmgd->bssid, bssid, ETH_ALEN); |
2486 | ifmgd->flags |= IEEE80211_STA_BSSID_SET; | |
dfe67012 | 2487 | } else { |
46900298 JB |
2488 | memset(ifmgd->bssid, 0, ETH_ALEN); |
2489 | ifmgd->flags &= ~IEEE80211_STA_BSSID_SET; | |
dfe67012 AF |
2490 | } |
2491 | ||
79f6440c | 2492 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
2493 | } |
2494 | ||
636a5d36 JM |
2495 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, |
2496 | const char *ie, size_t len) | |
9c6bd790 | 2497 | { |
46900298 | 2498 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 2499 | |
175427ce JB |
2500 | if (len == 0 && ifmgd->extra_ie_len == 0) |
2501 | return -EALREADY; | |
2502 | ||
2503 | if (len == ifmgd->extra_ie_len && ifmgd->extra_ie && | |
2504 | memcmp(ifmgd->extra_ie, ie, len) == 0) | |
2505 | return -EALREADY; | |
2506 | ||
46900298 | 2507 | kfree(ifmgd->extra_ie); |
9c6bd790 | 2508 | if (len == 0) { |
46900298 JB |
2509 | ifmgd->extra_ie = NULL; |
2510 | ifmgd->extra_ie_len = 0; | |
60f8b39c | 2511 | return 0; |
60f8b39c | 2512 | } |
46900298 JB |
2513 | ifmgd->extra_ie = kmalloc(len, GFP_KERNEL); |
2514 | if (!ifmgd->extra_ie) { | |
2515 | ifmgd->extra_ie_len = 0; | |
9c6bd790 JB |
2516 | return -ENOMEM; |
2517 | } | |
46900298 JB |
2518 | memcpy(ifmgd->extra_ie, ie, len); |
2519 | ifmgd->extra_ie_len = len; | |
9c6bd790 | 2520 | return 0; |
60f8b39c JB |
2521 | } |
2522 | ||
f698d856 | 2523 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2524 | { |
f4ea83dd | 2525 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 2526 | sdata->dev->name, reason); |
f0706e82 | 2527 | |
46900298 | 2528 | ieee80211_set_disassoc(sdata, true, true, reason); |
f0706e82 JB |
2529 | return 0; |
2530 | } | |
2531 | ||
f698d856 | 2532 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2533 | { |
46900298 | 2534 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 2535 | |
f4ea83dd | 2536 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 2537 | sdata->dev->name, reason); |
f0706e82 | 2538 | |
46900298 JB |
2539 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED)) |
2540 | return -ENOLINK; | |
f0706e82 | 2541 | |
46900298 | 2542 | ieee80211_set_disassoc(sdata, false, true, reason); |
f0706e82 JB |
2543 | return 0; |
2544 | } | |
84363e6e | 2545 | |
9c6bd790 JB |
2546 | /* scan finished notification */ |
2547 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
2548 | { | |
2549 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
9c6bd790 JB |
2550 | |
2551 | /* Restart STA timers */ | |
2552 | rcu_read_lock(); | |
2553 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
2554 | ieee80211_restart_sta_timer(sdata); | |
2555 | rcu_read_unlock(); | |
2556 | } | |
10f644a4 JB |
2557 | |
2558 | int ieee80211_max_network_latency(struct notifier_block *nb, | |
2559 | unsigned long data, void *dummy) | |
2560 | { | |
2561 | s32 latency_usec = (s32) data; | |
2562 | struct ieee80211_local *local = | |
2563 | container_of(nb, struct ieee80211_local, | |
2564 | network_latency_notifier); | |
2565 | ||
2566 | mutex_lock(&local->iflist_mtx); | |
2567 | ieee80211_recalc_ps(local, latency_usec); | |
2568 | mutex_unlock(&local->iflist_mtx); | |
2569 | ||
2570 | return 0; | |
2571 | } |