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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> |
f0706e82 | 20 | #include <net/mac80211.h> |
472dbc45 | 21 | #include <asm/unaligned.h> |
60f8b39c | 22 | |
f0706e82 | 23 | #include "ieee80211_i.h" |
2c8dccc7 JB |
24 | #include "rate.h" |
25 | #include "led.h" | |
f0706e82 | 26 | |
6042a3e3 | 27 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
28 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
29 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
30 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
31 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
32 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
33 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) | |
34 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
f0706e82 | 35 | |
5484e237 JB |
36 | /* utils */ |
37 | static int ecw2cw(int ecw) | |
60f8b39c | 38 | { |
5484e237 | 39 | return (1 << ecw) - 1; |
60f8b39c JB |
40 | } |
41 | ||
c2b13452 | 42 | static u8 *ieee80211_bss_get_ie(struct ieee80211_bss *bss, u8 ie) |
43ac2ca3 JM |
43 | { |
44 | u8 *end, *pos; | |
45 | ||
00d3f14c | 46 | pos = bss->cbss.information_elements; |
43ac2ca3 JM |
47 | if (pos == NULL) |
48 | return NULL; | |
00d3f14c | 49 | end = pos + bss->cbss.len_information_elements; |
43ac2ca3 JM |
50 | |
51 | while (pos + 1 < end) { | |
52 | if (pos + 2 + pos[1] > end) | |
53 | break; | |
54 | if (pos[0] == ie) | |
55 | return pos; | |
56 | pos += 2 + pos[1]; | |
57 | } | |
58 | ||
59 | return NULL; | |
60 | } | |
61 | ||
c2b13452 | 62 | static int ieee80211_compatible_rates(struct ieee80211_bss *bss, |
9ac19a90 | 63 | struct ieee80211_supported_band *sband, |
881d948c | 64 | u32 *rates) |
9ac19a90 JB |
65 | { |
66 | int i, j, count; | |
67 | *rates = 0; | |
68 | count = 0; | |
69 | for (i = 0; i < bss->supp_rates_len; i++) { | |
70 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
71 | ||
72 | for (j = 0; j < sband->n_bitrates; j++) | |
73 | if (sband->bitrates[j].bitrate == rate) { | |
74 | *rates |= BIT(j); | |
75 | count++; | |
76 | break; | |
77 | } | |
78 | } | |
79 | ||
80 | return count; | |
81 | } | |
82 | ||
9c6bd790 JB |
83 | /* frame sending functions */ |
84 | ||
46900298 | 85 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) |
9ac19a90 | 86 | { |
46900298 | 87 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
88 | struct ieee80211_local *local = sdata->local; |
89 | struct sk_buff *skb; | |
90 | struct ieee80211_mgmt *mgmt; | |
65fc73ac | 91 | u8 *pos, *ies, *ht_ie; |
9ac19a90 JB |
92 | int i, len, count, rates_len, supp_rates_len; |
93 | u16 capab; | |
c2b13452 | 94 | struct ieee80211_bss *bss; |
9ac19a90 JB |
95 | int wmm = 0; |
96 | struct ieee80211_supported_band *sband; | |
881d948c | 97 | u32 rates = 0; |
9ac19a90 JB |
98 | |
99 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
46900298 | 100 | sizeof(*mgmt) + 200 + ifmgd->extra_ie_len + |
65fc73ac | 101 | ifmgd->ssid_len); |
9ac19a90 JB |
102 | if (!skb) { |
103 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
104 | "frame\n", sdata->dev->name); | |
105 | return; | |
106 | } | |
107 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
108 | ||
109 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
110 | ||
46900298 | 111 | capab = ifmgd->capab; |
9ac19a90 JB |
112 | |
113 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
114 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
115 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
116 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
117 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
118 | } | |
119 | ||
46900298 | 120 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
9ac19a90 | 121 | local->hw.conf.channel->center_freq, |
46900298 | 122 | ifmgd->ssid, ifmgd->ssid_len); |
9ac19a90 | 123 | if (bss) { |
00d3f14c | 124 | if (bss->cbss.capability & WLAN_CAPABILITY_PRIVACY) |
9ac19a90 JB |
125 | capab |= WLAN_CAPABILITY_PRIVACY; |
126 | if (bss->wmm_used) | |
127 | wmm = 1; | |
128 | ||
129 | /* get all rates supported by the device and the AP as | |
130 | * some APs don't like getting a superset of their rates | |
131 | * in the association request (e.g. D-Link DAP 1353 in | |
132 | * b-only mode) */ | |
133 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
134 | ||
00d3f14c | 135 | if ((bss->cbss.capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
9ac19a90 JB |
136 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) |
137 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
138 | ||
139 | ieee80211_rx_bss_put(local, bss); | |
140 | } else { | |
141 | rates = ~0; | |
142 | rates_len = sband->n_bitrates; | |
143 | } | |
144 | ||
145 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
146 | memset(mgmt, 0, 24); | |
46900298 | 147 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 148 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 149 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 150 | |
46900298 | 151 | if (ifmgd->flags & IEEE80211_STA_PREV_BSSID_SET) { |
9ac19a90 JB |
152 | skb_put(skb, 10); |
153 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
154 | IEEE80211_STYPE_REASSOC_REQ); | |
155 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
156 | mgmt->u.reassoc_req.listen_interval = | |
157 | cpu_to_le16(local->hw.conf.listen_interval); | |
46900298 | 158 | memcpy(mgmt->u.reassoc_req.current_ap, ifmgd->prev_bssid, |
9ac19a90 JB |
159 | ETH_ALEN); |
160 | } else { | |
161 | skb_put(skb, 4); | |
162 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
163 | IEEE80211_STYPE_ASSOC_REQ); | |
164 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
13554121 | 165 | mgmt->u.assoc_req.listen_interval = |
9ac19a90 JB |
166 | cpu_to_le16(local->hw.conf.listen_interval); |
167 | } | |
168 | ||
169 | /* SSID */ | |
46900298 | 170 | ies = pos = skb_put(skb, 2 + ifmgd->ssid_len); |
9ac19a90 | 171 | *pos++ = WLAN_EID_SSID; |
46900298 JB |
172 | *pos++ = ifmgd->ssid_len; |
173 | memcpy(pos, ifmgd->ssid, ifmgd->ssid_len); | |
9ac19a90 JB |
174 | |
175 | /* add all rates which were marked to be used above */ | |
176 | supp_rates_len = rates_len; | |
177 | if (supp_rates_len > 8) | |
178 | supp_rates_len = 8; | |
179 | ||
180 | len = sband->n_bitrates; | |
181 | pos = skb_put(skb, supp_rates_len + 2); | |
182 | *pos++ = WLAN_EID_SUPP_RATES; | |
183 | *pos++ = supp_rates_len; | |
184 | ||
185 | count = 0; | |
186 | for (i = 0; i < sband->n_bitrates; i++) { | |
187 | if (BIT(i) & rates) { | |
188 | int rate = sband->bitrates[i].bitrate; | |
189 | *pos++ = (u8) (rate / 5); | |
190 | if (++count == 8) | |
191 | break; | |
192 | } | |
193 | } | |
194 | ||
195 | if (rates_len > count) { | |
196 | pos = skb_put(skb, rates_len - count + 2); | |
197 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
198 | *pos++ = rates_len - count; | |
199 | ||
200 | for (i++; i < sband->n_bitrates; i++) { | |
201 | if (BIT(i) & rates) { | |
202 | int rate = sband->bitrates[i].bitrate; | |
203 | *pos++ = (u8) (rate / 5); | |
204 | } | |
205 | } | |
206 | } | |
207 | ||
208 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
209 | /* 1. power capabilities */ | |
210 | pos = skb_put(skb, 4); | |
211 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
212 | *pos++ = 2; | |
213 | *pos++ = 0; /* min tx power */ | |
214 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
215 | ||
216 | /* 2. supported channels */ | |
217 | /* TODO: get this in reg domain format */ | |
218 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
219 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
220 | *pos++ = 2 * sband->n_channels; | |
221 | for (i = 0; i < sband->n_channels; i++) { | |
222 | *pos++ = ieee80211_frequency_to_channel( | |
223 | sband->channels[i].center_freq); | |
224 | *pos++ = 1; /* one channel in the subband*/ | |
225 | } | |
226 | } | |
227 | ||
46900298 JB |
228 | if (ifmgd->extra_ie) { |
229 | pos = skb_put(skb, ifmgd->extra_ie_len); | |
230 | memcpy(pos, ifmgd->extra_ie, ifmgd->extra_ie_len); | |
9ac19a90 JB |
231 | } |
232 | ||
46900298 | 233 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) { |
9ac19a90 JB |
234 | pos = skb_put(skb, 9); |
235 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
236 | *pos++ = 7; /* len */ | |
237 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
238 | *pos++ = 0x50; | |
239 | *pos++ = 0xf2; | |
240 | *pos++ = 2; /* WME */ | |
241 | *pos++ = 0; /* WME info */ | |
242 | *pos++ = 1; /* WME ver */ | |
243 | *pos++ = 0; | |
244 | } | |
245 | ||
246 | /* wmm support is a must to HT */ | |
eb46936b VT |
247 | /* |
248 | * IEEE802.11n does not allow TKIP/WEP as pairwise | |
249 | * ciphers in HT mode. We still associate in non-ht | |
250 | * mode (11a/b/g) if any one of these ciphers is | |
251 | * configured as pairwise. | |
252 | */ | |
46900298 | 253 | if (wmm && (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
d9fe60de JB |
254 | sband->ht_cap.ht_supported && |
255 | (ht_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_INFORMATION)) && | |
eb46936b | 256 | ht_ie[1] >= sizeof(struct ieee80211_ht_info) && |
46900298 | 257 | (!(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED))) { |
d9fe60de JB |
258 | struct ieee80211_ht_info *ht_info = |
259 | (struct ieee80211_ht_info *)(ht_ie + 2); | |
260 | u16 cap = sband->ht_cap.cap; | |
9ac19a90 JB |
261 | __le16 tmp; |
262 | u32 flags = local->hw.conf.channel->flags; | |
263 | ||
d9fe60de JB |
264 | switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { |
265 | case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: | |
9ac19a90 | 266 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { |
d9fe60de | 267 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
268 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
269 | } | |
270 | break; | |
d9fe60de | 271 | case IEEE80211_HT_PARAM_CHA_SEC_BELOW: |
9ac19a90 | 272 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { |
d9fe60de | 273 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; |
9ac19a90 JB |
274 | cap &= ~IEEE80211_HT_CAP_SGI_40; |
275 | } | |
276 | break; | |
277 | } | |
278 | ||
279 | tmp = cpu_to_le16(cap); | |
280 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
281 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
282 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
283 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
284 | memcpy(pos, &tmp, sizeof(u16)); | |
285 | pos += sizeof(u16); | |
286 | /* TODO: needs a define here for << 2 */ | |
d9fe60de JB |
287 | *pos++ = sband->ht_cap.ampdu_factor | |
288 | (sband->ht_cap.ampdu_density << 2); | |
289 | memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs)); | |
9ac19a90 JB |
290 | } |
291 | ||
46900298 JB |
292 | kfree(ifmgd->assocreq_ies); |
293 | ifmgd->assocreq_ies_len = (skb->data + skb->len) - ies; | |
294 | ifmgd->assocreq_ies = kmalloc(ifmgd->assocreq_ies_len, GFP_KERNEL); | |
295 | if (ifmgd->assocreq_ies) | |
296 | memcpy(ifmgd->assocreq_ies, ies, ifmgd->assocreq_ies_len); | |
9ac19a90 | 297 | |
e50db65c | 298 | ieee80211_tx_skb(sdata, skb, 0); |
9ac19a90 JB |
299 | } |
300 | ||
301 | ||
ef422bc0 JB |
302 | static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, |
303 | u16 stype, u16 reason) | |
9ac19a90 JB |
304 | { |
305 | struct ieee80211_local *local = sdata->local; | |
46900298 | 306 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9ac19a90 JB |
307 | struct sk_buff *skb; |
308 | struct ieee80211_mgmt *mgmt; | |
9aed3cc1 | 309 | |
65fc73ac | 310 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); |
9ac19a90 | 311 | if (!skb) { |
ef422bc0 JB |
312 | printk(KERN_DEBUG "%s: failed to allocate buffer for " |
313 | "deauth/disassoc frame\n", sdata->dev->name); | |
9ac19a90 JB |
314 | return; |
315 | } | |
316 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
317 | ||
318 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
319 | memset(mgmt, 0, 24); | |
46900298 | 320 | memcpy(mgmt->da, ifmgd->bssid, ETH_ALEN); |
9ac19a90 | 321 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
46900298 | 322 | memcpy(mgmt->bssid, ifmgd->bssid, ETH_ALEN); |
ef422bc0 | 323 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); |
9ac19a90 | 324 | skb_put(skb, 2); |
ef422bc0 | 325 | /* u.deauth.reason_code == u.disassoc.reason_code */ |
9ac19a90 JB |
326 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); |
327 | ||
46900298 | 328 | ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED); |
9ac19a90 JB |
329 | } |
330 | ||
572e0012 KV |
331 | void ieee80211_send_pspoll(struct ieee80211_local *local, |
332 | struct ieee80211_sub_if_data *sdata) | |
333 | { | |
46900298 | 334 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
572e0012 KV |
335 | struct ieee80211_pspoll *pspoll; |
336 | struct sk_buff *skb; | |
337 | u16 fc; | |
338 | ||
339 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*pspoll)); | |
340 | if (!skb) { | |
341 | printk(KERN_DEBUG "%s: failed to allocate buffer for " | |
342 | "pspoll frame\n", sdata->dev->name); | |
343 | return; | |
344 | } | |
345 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
346 | ||
347 | pspoll = (struct ieee80211_pspoll *) skb_put(skb, sizeof(*pspoll)); | |
348 | memset(pspoll, 0, sizeof(*pspoll)); | |
349 | fc = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM; | |
350 | pspoll->frame_control = cpu_to_le16(fc); | |
46900298 | 351 | pspoll->aid = cpu_to_le16(ifmgd->aid); |
572e0012 KV |
352 | |
353 | /* aid in PS-Poll has its two MSBs each set to 1 */ | |
354 | pspoll->aid |= cpu_to_le16(1 << 15 | 1 << 14); | |
355 | ||
46900298 | 356 | memcpy(pspoll->bssid, ifmgd->bssid, ETH_ALEN); |
572e0012 KV |
357 | memcpy(pspoll->ta, sdata->dev->dev_addr, ETH_ALEN); |
358 | ||
359 | ieee80211_tx_skb(sdata, skb, 0); | |
572e0012 KV |
360 | } |
361 | ||
60f8b39c | 362 | /* MLME */ |
f698d856 | 363 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
46900298 | 364 | struct ieee80211_if_managed *ifmgd, |
f0706e82 JB |
365 | u8 *wmm_param, size_t wmm_param_len) |
366 | { | |
f0706e82 JB |
367 | struct ieee80211_tx_queue_params params; |
368 | size_t left; | |
369 | int count; | |
370 | u8 *pos; | |
371 | ||
46900298 | 372 | if (!(ifmgd->flags & IEEE80211_STA_WMM_ENABLED)) |
3434fbd3 JB |
373 | return; |
374 | ||
375 | if (!wmm_param) | |
376 | return; | |
377 | ||
f0706e82 JB |
378 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
379 | return; | |
380 | count = wmm_param[6] & 0x0f; | |
46900298 | 381 | if (count == ifmgd->wmm_last_param_set) |
f0706e82 | 382 | return; |
46900298 | 383 | ifmgd->wmm_last_param_set = count; |
f0706e82 JB |
384 | |
385 | pos = wmm_param + 8; | |
386 | left = wmm_param_len - 8; | |
387 | ||
388 | memset(¶ms, 0, sizeof(params)); | |
389 | ||
f0706e82 JB |
390 | local->wmm_acm = 0; |
391 | for (; left >= 4; left -= 4, pos += 4) { | |
392 | int aci = (pos[0] >> 5) & 0x03; | |
393 | int acm = (pos[0] >> 4) & 0x01; | |
394 | int queue; | |
395 | ||
396 | switch (aci) { | |
0eeb59fe | 397 | case 1: /* AC_BK */ |
e100bb64 | 398 | queue = 3; |
988c0f72 | 399 | if (acm) |
0eeb59fe | 400 | local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ |
f0706e82 | 401 | break; |
0eeb59fe | 402 | case 2: /* AC_VI */ |
e100bb64 | 403 | queue = 1; |
988c0f72 | 404 | if (acm) |
0eeb59fe | 405 | local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ |
f0706e82 | 406 | break; |
0eeb59fe | 407 | case 3: /* AC_VO */ |
e100bb64 | 408 | queue = 0; |
988c0f72 | 409 | if (acm) |
0eeb59fe | 410 | local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ |
f0706e82 | 411 | break; |
0eeb59fe | 412 | case 0: /* AC_BE */ |
f0706e82 | 413 | default: |
e100bb64 | 414 | queue = 2; |
988c0f72 | 415 | if (acm) |
0eeb59fe | 416 | local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ |
f0706e82 JB |
417 | break; |
418 | } | |
419 | ||
420 | params.aifs = pos[0] & 0x0f; | |
421 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
422 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 423 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 424 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 425 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 426 | "cWmin=%d cWmax=%d txop=%d\n", |
f698d856 | 427 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
428 | params.cw_max, params.txop); |
429 | #endif | |
0eeb59fe JM |
430 | if (local->ops->conf_tx && |
431 | local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
f0706e82 | 432 | printk(KERN_DEBUG "%s: failed to set TX queue " |
f698d856 | 433 | "parameters for queue %d\n", local->mdev->name, queue); |
f0706e82 JB |
434 | } |
435 | } | |
436 | } | |
437 | ||
1fb3606b | 438 | static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid) |
a97b77b9 VN |
439 | { |
440 | u8 mask; | |
441 | u8 index, indexn1, indexn2; | |
442 | struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim; | |
443 | ||
444 | aid &= 0x3fff; | |
445 | index = aid / 8; | |
446 | mask = 1 << (aid & 7); | |
447 | ||
a97b77b9 VN |
448 | indexn1 = tim->bitmap_ctrl & 0xfe; |
449 | indexn2 = elems->tim_len + indexn1 - 4; | |
450 | ||
451 | if (index < indexn1 || index > indexn2) | |
452 | return false; | |
453 | ||
454 | index -= indexn1; | |
455 | ||
456 | return !!(tim->virtual_map[index] & mask); | |
457 | } | |
458 | ||
7a5158ef JB |
459 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, |
460 | u16 capab, bool erp_valid, u8 erp) | |
5628221c | 461 | { |
bda3933a | 462 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
ebd74487 | 463 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
46900298 | 464 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
ebd74487 | 465 | #endif |
471b3efd | 466 | u32 changed = 0; |
7a5158ef JB |
467 | bool use_protection; |
468 | bool use_short_preamble; | |
469 | bool use_short_slot; | |
470 | ||
471 | if (erp_valid) { | |
472 | use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; | |
473 | use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
474 | } else { | |
475 | use_protection = false; | |
476 | use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); | |
477 | } | |
478 | ||
479 | use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); | |
5628221c | 480 | |
471b3efd | 481 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 482 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 483 | if (net_ratelimit()) { |
0c68ae26 | 484 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=%pM)\n", |
471b3efd | 485 | sdata->dev->name, |
5628221c | 486 | use_protection ? "enabled" : "disabled", |
46900298 | 487 | ifmgd->bssid); |
5628221c | 488 | } |
f4ea83dd | 489 | #endif |
471b3efd JB |
490 | bss_conf->use_cts_prot = use_protection; |
491 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 492 | } |
7e9ed188 | 493 | |
d43c7b37 | 494 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 495 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
496 | if (net_ratelimit()) { |
497 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0c68ae26 | 498 | " (BSSID=%pM)\n", |
471b3efd | 499 | sdata->dev->name, |
d43c7b37 | 500 | use_short_preamble ? "short" : "long", |
46900298 | 501 | ifmgd->bssid); |
7e9ed188 | 502 | } |
f4ea83dd | 503 | #endif |
d43c7b37 | 504 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 505 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 506 | } |
d9430a32 | 507 | |
7a5158ef JB |
508 | if (use_short_slot != bss_conf->use_short_slot) { |
509 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG | |
510 | if (net_ratelimit()) { | |
391429c1 CL |
511 | printk(KERN_DEBUG "%s: switched to %s slot time" |
512 | " (BSSID=%pM)\n", | |
7a5158ef JB |
513 | sdata->dev->name, |
514 | use_short_slot ? "short" : "long", | |
46900298 | 515 | ifmgd->bssid); |
7a5158ef JB |
516 | } |
517 | #endif | |
518 | bss_conf->use_short_slot = use_short_slot; | |
519 | changed |= BSS_CHANGED_ERP_SLOT; | |
50c4afb9 JL |
520 | } |
521 | ||
522 | return changed; | |
523 | } | |
524 | ||
46900298 | 525 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata) |
f5e5bf25 TW |
526 | { |
527 | union iwreq_data wrqu; | |
46900298 | 528 | |
f5e5bf25 | 529 | memset(&wrqu, 0, sizeof(wrqu)); |
46900298 JB |
530 | if (sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED) |
531 | memcpy(wrqu.ap_addr.sa_data, sdata->u.mgd.bssid, ETH_ALEN); | |
f5e5bf25 TW |
532 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
533 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
534 | } | |
535 | ||
46900298 | 536 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 537 | { |
46900298 | 538 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
74af0250 LT |
539 | char *buf; |
540 | size_t len; | |
541 | int i; | |
f0706e82 JB |
542 | union iwreq_data wrqu; |
543 | ||
46900298 | 544 | if (!ifmgd->assocreq_ies && !ifmgd->assocresp_ies) |
74af0250 LT |
545 | return; |
546 | ||
46900298 JB |
547 | buf = kmalloc(50 + 2 * (ifmgd->assocreq_ies_len + |
548 | ifmgd->assocresp_ies_len), GFP_KERNEL); | |
74af0250 LT |
549 | if (!buf) |
550 | return; | |
551 | ||
552 | len = sprintf(buf, "ASSOCINFO("); | |
46900298 | 553 | if (ifmgd->assocreq_ies) { |
74af0250 | 554 | len += sprintf(buf + len, "ReqIEs="); |
46900298 | 555 | for (i = 0; i < ifmgd->assocreq_ies_len; i++) { |
74af0250 | 556 | len += sprintf(buf + len, "%02x", |
46900298 | 557 | ifmgd->assocreq_ies[i]); |
74af0250 | 558 | } |
f0706e82 | 559 | } |
46900298 JB |
560 | if (ifmgd->assocresp_ies) { |
561 | if (ifmgd->assocreq_ies) | |
74af0250 LT |
562 | len += sprintf(buf + len, " "); |
563 | len += sprintf(buf + len, "RespIEs="); | |
46900298 | 564 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 565 | len += sprintf(buf + len, "%02x", |
46900298 | 566 | ifmgd->assocresp_ies[i]); |
74af0250 | 567 | } |
f0706e82 | 568 | } |
74af0250 LT |
569 | len += sprintf(buf + len, ")"); |
570 | ||
571 | if (len > IW_CUSTOM_MAX) { | |
572 | len = sprintf(buf, "ASSOCRESPIE="); | |
46900298 | 573 | for (i = 0; i < ifmgd->assocresp_ies_len; i++) { |
74af0250 | 574 | len += sprintf(buf + len, "%02x", |
46900298 | 575 | ifmgd->assocresp_ies[i]); |
74af0250 LT |
576 | } |
577 | } | |
578 | ||
ad788b5e JL |
579 | if (len <= IW_CUSTOM_MAX) { |
580 | memset(&wrqu, 0, sizeof(wrqu)); | |
581 | wrqu.data.length = len; | |
582 | wireless_send_event(sdata->dev, IWEVCUSTOM, &wrqu, buf); | |
583 | } | |
74af0250 LT |
584 | |
585 | kfree(buf); | |
f0706e82 JB |
586 | } |
587 | ||
588 | ||
f698d856 | 589 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
ae5eb026 | 590 | u32 bss_info_changed) |
f0706e82 | 591 | { |
46900298 | 592 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 593 | struct ieee80211_local *local = sdata->local; |
38668c05 | 594 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 595 | |
c2b13452 | 596 | struct ieee80211_bss *bss; |
d6f2da5b | 597 | |
ae5eb026 | 598 | bss_info_changed |= BSS_CHANGED_ASSOC; |
46900298 | 599 | ifmgd->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 600 | |
46900298 | 601 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
f5e5bf25 | 602 | conf->channel->center_freq, |
46900298 | 603 | ifmgd->ssid, ifmgd->ssid_len); |
f5e5bf25 TW |
604 | if (bss) { |
605 | /* set timing information */ | |
00d3f14c JB |
606 | sdata->vif.bss_conf.beacon_int = bss->cbss.beacon_interval; |
607 | sdata->vif.bss_conf.timestamp = bss->cbss.tsf; | |
bda3933a | 608 | sdata->vif.bss_conf.dtim_period = bss->dtim_period; |
21c0cbe7 | 609 | |
ae5eb026 | 610 | bss_info_changed |= ieee80211_handle_bss_capability(sdata, |
00d3f14c | 611 | bss->cbss.capability, bss->has_erp_value, bss->erp_value); |
9ac19a90 JB |
612 | |
613 | ieee80211_rx_bss_put(local, bss); | |
f0706e82 JB |
614 | } |
615 | ||
46900298 JB |
616 | ifmgd->flags |= IEEE80211_STA_PREV_BSSID_SET; |
617 | memcpy(ifmgd->prev_bssid, sdata->u.mgd.bssid, ETH_ALEN); | |
618 | ieee80211_sta_send_associnfo(sdata); | |
9306102e | 619 | |
46900298 | 620 | ifmgd->last_probe = jiffies; |
9ac19a90 | 621 | ieee80211_led_assoc(local, 1); |
9306102e | 622 | |
bda3933a | 623 | sdata->vif.bss_conf.assoc = 1; |
96dd22ac JB |
624 | /* |
625 | * For now just always ask the driver to update the basic rateset | |
626 | * when we have associated, we aren't checking whether it actually | |
627 | * changed or not. | |
628 | */ | |
ae5eb026 JB |
629 | bss_info_changed |= BSS_CHANGED_BASIC_RATES; |
630 | ieee80211_bss_info_change_notify(sdata, bss_info_changed); | |
f0706e82 | 631 | |
4be8c387 JB |
632 | if (local->powersave) { |
633 | if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) && | |
634 | local->hw.conf.dynamic_ps_timeout > 0) { | |
520eb820 | 635 | mod_timer(&local->dynamic_ps_timer, jiffies + |
46f2c4bd JB |
636 | msecs_to_jiffies( |
637 | local->hw.conf.dynamic_ps_timeout)); | |
4be8c387 JB |
638 | } else { |
639 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) | |
640 | ieee80211_send_nullfunc(local, sdata, 1); | |
520eb820 | 641 | conf->flags |= IEEE80211_CONF_PS; |
4be8c387 | 642 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
520eb820 | 643 | } |
e0cb686f KV |
644 | } |
645 | ||
9ac19a90 JB |
646 | netif_tx_start_all_queues(sdata->dev); |
647 | netif_carrier_on(sdata->dev); | |
f0706e82 | 648 | |
46900298 | 649 | ieee80211_sta_send_apinfo(sdata); |
f0706e82 JB |
650 | } |
651 | ||
46900298 | 652 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 653 | { |
46900298 | 654 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 655 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
656 | |
657 | ifmgd->direct_probe_tries++; | |
658 | if (ifmgd->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 659 | printk(KERN_DEBUG "%s: direct probe to AP %pM timed out\n", |
46900298 JB |
660 | sdata->dev->name, ifmgd->bssid); |
661 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
662 | ieee80211_sta_send_apinfo(sdata); | |
7a947080 VT |
663 | |
664 | /* | |
665 | * Most likely AP is not in the range so remove the | |
666 | * bss information associated to the AP | |
667 | */ | |
46900298 | 668 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, |
7a947080 | 669 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 670 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
671 | |
672 | /* | |
673 | * We might have a pending scan which had no chance to run yet | |
674 | * due to state == IEEE80211_STA_MLME_DIRECT_PROBE. | |
675 | * Hence, queue the STAs work again | |
676 | */ | |
677 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
678 | return; |
679 | } | |
f0706e82 | 680 | |
0c68ae26 | 681 | printk(KERN_DEBUG "%s: direct probe to AP %pM try %d\n", |
46900298 JB |
682 | sdata->dev->name, ifmgd->bssid, |
683 | ifmgd->direct_probe_tries); | |
f0706e82 | 684 | |
46900298 | 685 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 686 | |
46900298 | 687 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifmgd->request); |
9ac19a90 JB |
688 | |
689 | /* Direct probe is sent to broadcast address as some APs | |
690 | * will not answer to direct packet in unassociated state. | |
691 | */ | |
692 | ieee80211_send_probe_req(sdata, NULL, | |
70692ad2 | 693 | ifmgd->ssid, ifmgd->ssid_len, NULL, 0); |
9ac19a90 | 694 | |
46900298 | 695 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
60f8b39c | 696 | } |
f0706e82 | 697 | |
9ac19a90 | 698 | |
46900298 | 699 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 700 | { |
46900298 | 701 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 702 | struct ieee80211_local *local = sdata->local; |
636a5d36 JM |
703 | u8 *ies; |
704 | size_t ies_len; | |
46900298 JB |
705 | |
706 | ifmgd->auth_tries++; | |
707 | if (ifmgd->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0c68ae26 | 708 | printk(KERN_DEBUG "%s: authentication with AP %pM" |
9ac19a90 | 709 | " timed out\n", |
46900298 JB |
710 | sdata->dev->name, ifmgd->bssid); |
711 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
712 | ieee80211_sta_send_apinfo(sdata); | |
713 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, | |
7a947080 | 714 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 715 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
716 | |
717 | /* | |
718 | * We might have a pending scan which had no chance to run yet | |
719 | * due to state == IEEE80211_STA_MLME_AUTHENTICATE. | |
720 | * Hence, queue the STAs work again | |
721 | */ | |
722 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
723 | return; |
724 | } | |
f0706e82 | 725 | |
46900298 | 726 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
0c68ae26 | 727 | printk(KERN_DEBUG "%s: authenticate with AP %pM\n", |
46900298 | 728 | sdata->dev->name, ifmgd->bssid); |
f0706e82 | 729 | |
636a5d36 JM |
730 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
731 | ies = ifmgd->sme_auth_ie; | |
732 | ies_len = ifmgd->sme_auth_ie_len; | |
733 | } else { | |
734 | ies = NULL; | |
735 | ies_len = 0; | |
736 | } | |
737 | ieee80211_send_auth(sdata, 1, ifmgd->auth_alg, ies, ies_len, | |
46900298 JB |
738 | ifmgd->bssid, 0); |
739 | ifmgd->auth_transaction = 2; | |
9ac19a90 | 740 | |
46900298 | 741 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_AUTH_TIMEOUT); |
f0706e82 JB |
742 | } |
743 | ||
5925d976 VN |
744 | /* |
745 | * The disassoc 'reason' argument can be either our own reason | |
746 | * if self disconnected or a reason code from the AP. | |
747 | */ | |
aa458d17 | 748 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
46900298 JB |
749 | bool deauth, bool self_disconnected, |
750 | u16 reason) | |
aa458d17 | 751 | { |
46900298 | 752 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
aa458d17 TW |
753 | struct ieee80211_local *local = sdata->local; |
754 | struct sta_info *sta; | |
e0cb686f | 755 | u32 changed = 0, config_changed = 0; |
aa458d17 TW |
756 | |
757 | rcu_read_lock(); | |
758 | ||
46900298 | 759 | sta = sta_info_get(local, ifmgd->bssid); |
aa458d17 TW |
760 | if (!sta) { |
761 | rcu_read_unlock(); | |
762 | return; | |
763 | } | |
764 | ||
765 | if (deauth) { | |
46900298 JB |
766 | ifmgd->direct_probe_tries = 0; |
767 | ifmgd->auth_tries = 0; | |
aa458d17 | 768 | } |
46900298 JB |
769 | ifmgd->assoc_scan_tries = 0; |
770 | ifmgd->assoc_tries = 0; | |
aa458d17 | 771 | |
24e64622 | 772 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
773 | netif_carrier_off(sdata->dev); |
774 | ||
2dace10e | 775 | ieee80211_sta_tear_down_BA_sessions(sta); |
aa458d17 TW |
776 | |
777 | if (self_disconnected) { | |
778 | if (deauth) | |
ef422bc0 JB |
779 | ieee80211_send_deauth_disassoc(sdata, |
780 | IEEE80211_STYPE_DEAUTH, reason); | |
aa458d17 | 781 | else |
ef422bc0 JB |
782 | ieee80211_send_deauth_disassoc(sdata, |
783 | IEEE80211_STYPE_DISASSOC, reason); | |
aa458d17 TW |
784 | } |
785 | ||
46900298 | 786 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; |
f5e5bf25 TW |
787 | changed |= ieee80211_reset_erp_info(sdata); |
788 | ||
f5e5bf25 | 789 | ieee80211_led_assoc(local, 0); |
ae5eb026 JB |
790 | changed |= BSS_CHANGED_ASSOC; |
791 | sdata->vif.bss_conf.assoc = false; | |
f5e5bf25 | 792 | |
46900298 | 793 | ieee80211_sta_send_apinfo(sdata); |
aa458d17 | 794 | |
7a947080 | 795 | if (self_disconnected || reason == WLAN_REASON_DISASSOC_STA_HAS_LEFT) { |
46900298 JB |
796 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
797 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, | |
7a947080 | 798 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 799 | ifmgd->ssid, ifmgd->ssid_len); |
7a947080 | 800 | } |
aa458d17 | 801 | |
aa458d17 TW |
802 | rcu_read_unlock(); |
803 | ||
4797938c | 804 | /* channel(_type) changes are handled by ieee80211_hw_config */ |
094d05dc | 805 | local->oper_channel_type = NL80211_CHAN_NO_HT; |
e0cb686f | 806 | |
a8302de9 VT |
807 | local->power_constr_level = 0; |
808 | ||
520eb820 KV |
809 | del_timer_sync(&local->dynamic_ps_timer); |
810 | cancel_work_sync(&local->dynamic_ps_enable_work); | |
811 | ||
e0cb686f KV |
812 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { |
813 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
814 | config_changed |= IEEE80211_CONF_CHANGE_PS; | |
815 | } | |
ae5eb026 | 816 | |
e0cb686f | 817 | ieee80211_hw_config(local, config_changed); |
ae5eb026 | 818 | ieee80211_bss_info_change_notify(sdata, changed); |
8e268e47 TW |
819 | |
820 | rcu_read_lock(); | |
821 | ||
46900298 | 822 | sta = sta_info_get(local, ifmgd->bssid); |
8e268e47 TW |
823 | if (!sta) { |
824 | rcu_read_unlock(); | |
825 | return; | |
826 | } | |
827 | ||
828 | sta_info_unlink(&sta); | |
829 | ||
830 | rcu_read_unlock(); | |
831 | ||
832 | sta_info_destroy(sta); | |
aa458d17 | 833 | } |
f0706e82 | 834 | |
9ac19a90 JB |
835 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
836 | { | |
837 | if (!sdata || !sdata->default_key || | |
838 | sdata->default_key->conf.alg != ALG_WEP) | |
839 | return 0; | |
840 | return 1; | |
841 | } | |
842 | ||
46900298 | 843 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 844 | { |
46900298 | 845 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 846 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 847 | struct ieee80211_bss *bss; |
5b98b1f7 JB |
848 | int bss_privacy; |
849 | int wep_privacy; | |
850 | int privacy_invoked; | |
f0706e82 | 851 | |
7986cf95 | 852 | if (!ifmgd || (ifmgd->flags & IEEE80211_STA_EXT_SME)) |
f0706e82 JB |
853 | return 0; |
854 | ||
46900298 | 855 | bss = ieee80211_rx_bss_get(local, ifmgd->bssid, |
8318d78a | 856 | local->hw.conf.channel->center_freq, |
46900298 | 857 | ifmgd->ssid, ifmgd->ssid_len); |
f0706e82 JB |
858 | if (!bss) |
859 | return 0; | |
860 | ||
00d3f14c | 861 | bss_privacy = !!(bss->cbss.capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 862 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
46900298 | 863 | privacy_invoked = !!(ifmgd->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 864 | |
3e122be0 | 865 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 866 | |
5b98b1f7 JB |
867 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
868 | return 0; | |
869 | ||
870 | return 1; | |
f0706e82 JB |
871 | } |
872 | ||
46900298 | 873 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 874 | { |
46900298 | 875 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
11432379 | 876 | struct ieee80211_local *local = sdata->local; |
46900298 JB |
877 | |
878 | ifmgd->assoc_tries++; | |
879 | if (ifmgd->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0c68ae26 | 880 | printk(KERN_DEBUG "%s: association with AP %pM" |
f0706e82 | 881 | " timed out\n", |
46900298 JB |
882 | sdata->dev->name, ifmgd->bssid); |
883 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
884 | ieee80211_sta_send_apinfo(sdata); | |
885 | ieee80211_rx_bss_remove(sdata, ifmgd->bssid, | |
7a947080 | 886 | sdata->local->hw.conf.channel->center_freq, |
46900298 | 887 | ifmgd->ssid, ifmgd->ssid_len); |
11432379 HS |
888 | /* |
889 | * We might have a pending scan which had no chance to run yet | |
890 | * due to state == IEEE80211_STA_MLME_ASSOCIATE. | |
891 | * Hence, queue the STAs work again | |
892 | */ | |
893 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
894 | return; |
895 | } | |
896 | ||
46900298 | 897 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
0c68ae26 | 898 | printk(KERN_DEBUG "%s: associate with AP %pM\n", |
46900298 JB |
899 | sdata->dev->name, ifmgd->bssid); |
900 | if (ieee80211_privacy_mismatch(sdata)) { | |
f0706e82 | 901 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 902 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
46900298 | 903 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
904 | return; |
905 | } | |
906 | ||
46900298 | 907 | ieee80211_send_assoc(sdata); |
f0706e82 | 908 | |
46900298 | 909 | mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); |
f0706e82 JB |
910 | } |
911 | ||
912 | ||
46900298 | 913 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 914 | { |
46900298 | 915 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 916 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
917 | struct sta_info *sta; |
918 | int disassoc; | |
919 | ||
920 | /* TODO: start monitoring current AP signal quality and number of | |
921 | * missed beacons. Scan other channels every now and then and search | |
922 | * for better APs. */ | |
923 | /* TODO: remove expired BSSes */ | |
924 | ||
46900298 | 925 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 926 | |
d0709a65 JB |
927 | rcu_read_lock(); |
928 | ||
46900298 | 929 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 930 | if (!sta) { |
0c68ae26 | 931 | printk(KERN_DEBUG "%s: No STA entry for own AP %pM\n", |
46900298 | 932 | sdata->dev->name, ifmgd->bssid); |
f0706e82 JB |
933 | disassoc = 1; |
934 | } else { | |
935 | disassoc = 0; | |
936 | if (time_after(jiffies, | |
937 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
46900298 | 938 | if (ifmgd->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 939 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0c68ae26 | 940 | "current AP %pM - assume out of " |
f0706e82 | 941 | "range\n", |
46900298 | 942 | sdata->dev->name, ifmgd->bssid); |
f0706e82 | 943 | disassoc = 1; |
d6f2da5b | 944 | } else |
46900298 JB |
945 | ieee80211_send_probe_req(sdata, ifmgd->bssid, |
946 | ifmgd->ssid, | |
70692ad2 JM |
947 | ifmgd->ssid_len, |
948 | NULL, 0); | |
46900298 | 949 | ifmgd->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 950 | } else { |
46900298 JB |
951 | ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
952 | if (time_after(jiffies, ifmgd->last_probe + | |
f0706e82 | 953 | IEEE80211_PROBE_INTERVAL)) { |
46900298 JB |
954 | ifmgd->last_probe = jiffies; |
955 | ieee80211_send_probe_req(sdata, ifmgd->bssid, | |
956 | ifmgd->ssid, | |
70692ad2 JM |
957 | ifmgd->ssid_len, |
958 | NULL, 0); | |
f0706e82 JB |
959 | } |
960 | } | |
f0706e82 | 961 | } |
d0709a65 JB |
962 | |
963 | rcu_read_unlock(); | |
964 | ||
7a947080 | 965 | if (disassoc) |
46900298 | 966 | ieee80211_set_disassoc(sdata, true, true, |
60f8b39c | 967 | WLAN_REASON_PREV_AUTH_NOT_VALID); |
7a947080 | 968 | else |
46900298 | 969 | mod_timer(&ifmgd->timer, jiffies + |
60f8b39c | 970 | IEEE80211_MONITORING_INTERVAL); |
f0706e82 JB |
971 | } |
972 | ||
973 | ||
46900298 | 974 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 975 | { |
46900298 JB |
976 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
977 | ||
f698d856 | 978 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
46900298 | 979 | ifmgd->flags |= IEEE80211_STA_AUTHENTICATED; |
636a5d36 JM |
980 | if (ifmgd->flags & IEEE80211_STA_EXT_SME) { |
981 | /* Wait for SME to request association */ | |
982 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
983 | } else | |
984 | ieee80211_associate(sdata); | |
f0706e82 JB |
985 | } |
986 | ||
987 | ||
f698d856 | 988 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
989 | struct ieee80211_mgmt *mgmt, |
990 | size_t len) | |
991 | { | |
992 | u8 *pos; | |
993 | struct ieee802_11_elems elems; | |
994 | ||
f0706e82 | 995 | pos = mgmt->u.auth.variable; |
67a4cce4 | 996 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 997 | if (!elems.challenge) |
f0706e82 | 998 | return; |
46900298 JB |
999 | ieee80211_send_auth(sdata, 3, sdata->u.mgd.auth_alg, |
1000 | elems.challenge - 2, elems.challenge_len + 2, | |
1001 | sdata->u.mgd.bssid, 1); | |
1002 | sdata->u.mgd.auth_transaction = 4; | |
fe3d2c3f JB |
1003 | } |
1004 | ||
f698d856 | 1005 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1006 | struct ieee80211_mgmt *mgmt, |
1007 | size_t len) | |
1008 | { | |
46900298 | 1009 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1010 | u16 auth_alg, auth_transaction, status_code; |
1011 | ||
46900298 | 1012 | if (ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE) |
f0706e82 | 1013 | return; |
f0706e82 | 1014 | |
f4ea83dd | 1015 | if (len < 24 + 6) |
f0706e82 | 1016 | return; |
f0706e82 | 1017 | |
46900298 | 1018 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1019 | return; |
f0706e82 | 1020 | |
46900298 | 1021 | if (memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1022 | return; |
f0706e82 JB |
1023 | |
1024 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1025 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1026 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1027 | ||
46900298 JB |
1028 | if (auth_alg != ifmgd->auth_alg || |
1029 | auth_transaction != ifmgd->auth_transaction) | |
f0706e82 | 1030 | return; |
f0706e82 JB |
1031 | |
1032 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1033 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1034 | u8 algs[3]; | |
1035 | const int num_algs = ARRAY_SIZE(algs); | |
1036 | int i, pos; | |
1037 | algs[0] = algs[1] = algs[2] = 0xff; | |
46900298 | 1038 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
f0706e82 | 1039 | algs[0] = WLAN_AUTH_OPEN; |
46900298 | 1040 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) |
f0706e82 | 1041 | algs[1] = WLAN_AUTH_SHARED_KEY; |
46900298 | 1042 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) |
f0706e82 | 1043 | algs[2] = WLAN_AUTH_LEAP; |
46900298 | 1044 | if (ifmgd->auth_alg == WLAN_AUTH_OPEN) |
f0706e82 | 1045 | pos = 0; |
46900298 | 1046 | else if (ifmgd->auth_alg == WLAN_AUTH_SHARED_KEY) |
f0706e82 JB |
1047 | pos = 1; |
1048 | else | |
1049 | pos = 2; | |
1050 | for (i = 0; i < num_algs; i++) { | |
1051 | pos++; | |
1052 | if (pos >= num_algs) | |
1053 | pos = 0; | |
46900298 | 1054 | if (algs[pos] == ifmgd->auth_alg || |
f0706e82 JB |
1055 | algs[pos] == 0xff) |
1056 | continue; | |
1057 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1058 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 | 1059 | continue; |
46900298 | 1060 | ifmgd->auth_alg = algs[pos]; |
f0706e82 JB |
1061 | break; |
1062 | } | |
1063 | } | |
1064 | return; | |
1065 | } | |
1066 | ||
46900298 | 1067 | switch (ifmgd->auth_alg) { |
f0706e82 JB |
1068 | case WLAN_AUTH_OPEN: |
1069 | case WLAN_AUTH_LEAP: | |
636a5d36 | 1070 | case WLAN_AUTH_FT: |
46900298 | 1071 | ieee80211_auth_completed(sdata); |
6039f6d2 | 1072 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1073 | break; |
1074 | case WLAN_AUTH_SHARED_KEY: | |
6039f6d2 | 1075 | if (ifmgd->auth_transaction == 4) { |
46900298 | 1076 | ieee80211_auth_completed(sdata); |
6039f6d2 JM |
1077 | cfg80211_send_rx_auth(sdata->dev, (u8 *) mgmt, len); |
1078 | } else | |
46900298 | 1079 | ieee80211_auth_challenge(sdata, mgmt, len); |
f0706e82 JB |
1080 | break; |
1081 | } | |
1082 | } | |
1083 | ||
1084 | ||
f698d856 | 1085 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1086 | struct ieee80211_mgmt *mgmt, |
1087 | size_t len) | |
1088 | { | |
46900298 | 1089 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1090 | u16 reason_code; |
1091 | ||
f4ea83dd | 1092 | if (len < 24 + 2) |
f0706e82 | 1093 | return; |
f0706e82 | 1094 | |
46900298 | 1095 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1096 | return; |
f0706e82 JB |
1097 | |
1098 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1099 | ||
46900298 | 1100 | if (ifmgd->flags & IEEE80211_STA_AUTHENTICATED) |
97c8b013 ZY |
1101 | printk(KERN_DEBUG "%s: deauthenticated (Reason: %u)\n", |
1102 | sdata->dev->name, reason_code); | |
f0706e82 | 1103 | |
636a5d36 JM |
1104 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1105 | (ifmgd->state == IEEE80211_STA_MLME_AUTHENTICATE || | |
1106 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1107 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED)) { | |
46900298 JB |
1108 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
1109 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1110 | IEEE80211_RETRY_AUTH_INTERVAL); |
1111 | } | |
1112 | ||
46900298 JB |
1113 | ieee80211_set_disassoc(sdata, true, false, 0); |
1114 | ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED; | |
6039f6d2 | 1115 | cfg80211_send_rx_deauth(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1116 | } |
1117 | ||
1118 | ||
f698d856 | 1119 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1120 | struct ieee80211_mgmt *mgmt, |
1121 | size_t len) | |
1122 | { | |
46900298 | 1123 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 JB |
1124 | u16 reason_code; |
1125 | ||
f4ea83dd | 1126 | if (len < 24 + 2) |
f0706e82 | 1127 | return; |
f0706e82 | 1128 | |
46900298 | 1129 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1130 | return; |
f0706e82 JB |
1131 | |
1132 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1133 | ||
46900298 | 1134 | if (ifmgd->flags & IEEE80211_STA_ASSOCIATED) |
97c8b013 ZY |
1135 | printk(KERN_DEBUG "%s: disassociated (Reason: %u)\n", |
1136 | sdata->dev->name, reason_code); | |
f0706e82 | 1137 | |
636a5d36 JM |
1138 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1139 | ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
46900298 JB |
1140 | ifmgd->state = IEEE80211_STA_MLME_ASSOCIATE; |
1141 | mod_timer(&ifmgd->timer, jiffies + | |
f0706e82 JB |
1142 | IEEE80211_RETRY_AUTH_INTERVAL); |
1143 | } | |
1144 | ||
46900298 | 1145 | ieee80211_set_disassoc(sdata, false, false, reason_code); |
6039f6d2 | 1146 | cfg80211_send_rx_disassoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1147 | } |
1148 | ||
1149 | ||
471b3efd | 1150 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1151 | struct ieee80211_mgmt *mgmt, |
1152 | size_t len, | |
1153 | int reassoc) | |
1154 | { | |
46900298 | 1155 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
471b3efd | 1156 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1157 | struct ieee80211_supported_band *sband; |
f0706e82 | 1158 | struct sta_info *sta; |
881d948c | 1159 | u32 rates, basic_rates; |
f0706e82 JB |
1160 | u16 capab_info, status_code, aid; |
1161 | struct ieee802_11_elems elems; | |
bda3933a | 1162 | struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; |
f0706e82 | 1163 | u8 *pos; |
ae5eb026 | 1164 | u32 changed = 0; |
f0706e82 | 1165 | int i, j; |
ddf4ac53 | 1166 | bool have_higher_than_11mbit = false, newsta = false; |
ae5eb026 | 1167 | u16 ap_ht_cap_flags; |
f0706e82 JB |
1168 | |
1169 | /* AssocResp and ReassocResp have identical structure, so process both | |
1170 | * of them in this function. */ | |
1171 | ||
46900298 | 1172 | if (ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1173 | return; |
f0706e82 | 1174 | |
f4ea83dd | 1175 | if (len < 24 + 6) |
f0706e82 | 1176 | return; |
f0706e82 | 1177 | |
46900298 | 1178 | if (memcmp(ifmgd->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1179 | return; |
f0706e82 JB |
1180 | |
1181 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1182 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1183 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1184 | |
0c68ae26 | 1185 | printk(KERN_DEBUG "%s: RX %sssocResp from %pM (capab=0x%x " |
f0706e82 | 1186 | "status=%d aid=%d)\n", |
0c68ae26 | 1187 | sdata->dev->name, reassoc ? "Rea" : "A", mgmt->sa, |
ddd68587 | 1188 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 | 1189 | |
63a5ab82 JM |
1190 | pos = mgmt->u.assoc_resp.variable; |
1191 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); | |
1192 | ||
1193 | if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY && | |
f797eb7e JM |
1194 | elems.timeout_int && elems.timeout_int_len == 5 && |
1195 | elems.timeout_int[0] == WLAN_TIMEOUT_ASSOC_COMEBACK) { | |
63a5ab82 | 1196 | u32 tu, ms; |
f797eb7e | 1197 | tu = get_unaligned_le32(elems.timeout_int + 1); |
63a5ab82 JM |
1198 | ms = tu * 1024 / 1000; |
1199 | printk(KERN_DEBUG "%s: AP rejected association temporarily; " | |
1200 | "comeback duration %u TU (%u ms)\n", | |
1201 | sdata->dev->name, tu, ms); | |
1202 | if (ms > IEEE80211_ASSOC_TIMEOUT) | |
46900298 | 1203 | mod_timer(&ifmgd->timer, |
63a5ab82 JM |
1204 | jiffies + msecs_to_jiffies(ms)); |
1205 | return; | |
1206 | } | |
1207 | ||
f0706e82 JB |
1208 | if (status_code != WLAN_STATUS_SUCCESS) { |
1209 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1210 | sdata->dev->name, status_code); |
8a69aa93 DD |
1211 | /* if this was a reassociation, ensure we try a "full" |
1212 | * association next time. This works around some broken APs | |
1213 | * which do not correctly reject reassociation requests. */ | |
46900298 | 1214 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1215 | return; |
1216 | } | |
1217 | ||
1dd84aa2 JB |
1218 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1219 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1220 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1221 | aid &= ~(BIT(15) | BIT(14)); |
1222 | ||
f0706e82 JB |
1223 | if (!elems.supp_rates) { |
1224 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1225 | sdata->dev->name); |
f0706e82 JB |
1226 | return; |
1227 | } | |
1228 | ||
f698d856 | 1229 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
46900298 JB |
1230 | ifmgd->aid = aid; |
1231 | ifmgd->ap_capab = capab_info; | |
f0706e82 | 1232 | |
46900298 JB |
1233 | kfree(ifmgd->assocresp_ies); |
1234 | ifmgd->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
1235 | ifmgd->assocresp_ies = kmalloc(ifmgd->assocresp_ies_len, GFP_KERNEL); | |
1236 | if (ifmgd->assocresp_ies) | |
1237 | memcpy(ifmgd->assocresp_ies, pos, ifmgd->assocresp_ies_len); | |
f0706e82 | 1238 | |
d0709a65 JB |
1239 | rcu_read_lock(); |
1240 | ||
f0706e82 | 1241 | /* Add STA entry for the AP */ |
46900298 | 1242 | sta = sta_info_get(local, ifmgd->bssid); |
f0706e82 | 1243 | if (!sta) { |
ddf4ac53 | 1244 | newsta = true; |
d0709a65 | 1245 | |
46900298 | 1246 | sta = sta_info_alloc(sdata, ifmgd->bssid, GFP_ATOMIC); |
73651ee6 JB |
1247 | if (!sta) { |
1248 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1249 | " the AP\n", sdata->dev->name); |
d0709a65 | 1250 | rcu_read_unlock(); |
f0706e82 JB |
1251 | return; |
1252 | } | |
f709fc69 | 1253 | |
60f8b39c JB |
1254 | /* update new sta with its last rx activity */ |
1255 | sta->last_rx = jiffies; | |
f709fc69 | 1256 | } |
f709fc69 | 1257 | |
60f8b39c JB |
1258 | /* |
1259 | * FIXME: Do we really need to update the sta_info's information here? | |
1260 | * We already know about the AP (we found it in our list) so it | |
1261 | * should already be filled with the right info, no? | |
1262 | * As is stands, all this is racy because typically we assume | |
1263 | * the information that is filled in here (except flags) doesn't | |
1264 | * change while a STA structure is alive. As such, it should move | |
1265 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1266 | */ | |
f709fc69 | 1267 | |
60f8b39c JB |
1268 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
1269 | WLAN_STA_AUTHORIZED); | |
05e5e883 | 1270 | |
60f8b39c JB |
1271 | rates = 0; |
1272 | basic_rates = 0; | |
1273 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1274 | |
60f8b39c JB |
1275 | for (i = 0; i < elems.supp_rates_len; i++) { |
1276 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
d61272cb | 1277 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
f709fc69 | 1278 | |
60f8b39c JB |
1279 | if (rate > 110) |
1280 | have_higher_than_11mbit = true; | |
1281 | ||
1282 | for (j = 0; j < sband->n_bitrates; j++) { | |
d61272cb | 1283 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1284 | rates |= BIT(j); |
d61272cb TW |
1285 | if (is_basic) |
1286 | basic_rates |= BIT(j); | |
1287 | break; | |
1288 | } | |
f709fc69 | 1289 | } |
f709fc69 LCC |
1290 | } |
1291 | ||
60f8b39c JB |
1292 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1293 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
d61272cb | 1294 | bool is_basic = !!(elems.supp_rates[i] & 0x80); |
f0706e82 | 1295 | |
60f8b39c JB |
1296 | if (rate > 110) |
1297 | have_higher_than_11mbit = true; | |
f0706e82 | 1298 | |
60f8b39c | 1299 | for (j = 0; j < sband->n_bitrates; j++) { |
d61272cb | 1300 | if (sband->bitrates[j].bitrate == rate) { |
60f8b39c | 1301 | rates |= BIT(j); |
d61272cb TW |
1302 | if (is_basic) |
1303 | basic_rates |= BIT(j); | |
1304 | break; | |
1305 | } | |
60f8b39c | 1306 | } |
1ebebea8 | 1307 | } |
f0706e82 | 1308 | |
323ce79a | 1309 | sta->sta.supp_rates[local->hw.conf.channel->band] = rates; |
bda3933a | 1310 | sdata->vif.bss_conf.basic_rates = basic_rates; |
60f8b39c JB |
1311 | |
1312 | /* cf. IEEE 802.11 9.2.12 */ | |
1313 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1314 | have_higher_than_11mbit) | |
1315 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1316 | else | |
1317 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1318 | |
e65c2263 S |
1319 | /* If TKIP/WEP is used, no need to parse AP's HT capabilities */ |
1320 | if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 | 1321 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, |
d9fe60de | 1322 | elems.ht_cap_elem, &sta->sta.ht_cap); |
ae5eb026 JB |
1323 | |
1324 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
f0706e82 | 1325 | |
4b7679a5 | 1326 | rate_control_rate_init(sta); |
f0706e82 | 1327 | |
46900298 | 1328 | if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) |
5394af4d JM |
1329 | set_sta_flags(sta, WLAN_STA_MFP); |
1330 | ||
ddf4ac53 | 1331 | if (elems.wmm_param) |
60f8b39c | 1332 | set_sta_flags(sta, WLAN_STA_WME); |
ddf4ac53 JB |
1333 | |
1334 | if (newsta) { | |
1335 | int err = sta_info_insert(sta); | |
1336 | if (err) { | |
1337 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1338 | " the AP (error %d)\n", sdata->dev->name, err); | |
1339 | rcu_read_unlock(); | |
1340 | return; | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | rcu_read_unlock(); | |
1345 | ||
1346 | if (elems.wmm_param) | |
46900298 | 1347 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
60f8b39c | 1348 | elems.wmm_param_len); |
f0706e82 | 1349 | |
ae5eb026 | 1350 | if (elems.ht_info_elem && elems.wmm_param && |
46900298 JB |
1351 | (ifmgd->flags & IEEE80211_STA_WMM_ENABLED) && |
1352 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) | |
ae5eb026 JB |
1353 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, |
1354 | ap_ht_cap_flags); | |
1355 | ||
60f8b39c JB |
1356 | /* set AID and assoc capability, |
1357 | * ieee80211_set_associated() will tell the driver */ | |
1358 | bss_conf->aid = aid; | |
1359 | bss_conf->assoc_capability = capab_info; | |
46900298 | 1360 | ieee80211_set_associated(sdata, changed); |
f0706e82 | 1361 | |
46900298 | 1362 | ieee80211_associated(sdata); |
6039f6d2 | 1363 | cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len); |
f0706e82 JB |
1364 | } |
1365 | ||
1366 | ||
98c8fccf JB |
1367 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1368 | struct ieee80211_mgmt *mgmt, | |
1369 | size_t len, | |
1370 | struct ieee80211_rx_status *rx_status, | |
1371 | struct ieee802_11_elems *elems, | |
1372 | bool beacon) | |
1373 | { | |
1374 | struct ieee80211_local *local = sdata->local; | |
1375 | int freq; | |
c2b13452 | 1376 | struct ieee80211_bss *bss; |
98c8fccf | 1377 | struct ieee80211_channel *channel; |
98c8fccf JB |
1378 | |
1379 | if (elems->ds_params && elems->ds_params_len == 1) | |
1380 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1381 | else | |
1382 | freq = rx_status->freq; | |
1383 | ||
1384 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1385 | ||
1386 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1387 | return; | |
1388 | ||
98c8fccf | 1389 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, |
2a519311 | 1390 | channel, beacon); |
98c8fccf JB |
1391 | if (!bss) |
1392 | return; | |
1393 | ||
c481ec97 | 1394 | if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && |
46900298 | 1395 | (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN) == 0)) { |
c481ec97 S |
1396 | struct ieee80211_channel_sw_ie *sw_elem = |
1397 | (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; | |
1398 | ieee80211_process_chanswitch(sdata, sw_elem, bss); | |
1399 | } | |
1400 | ||
3e122be0 | 1401 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
1402 | } |
1403 | ||
1404 | ||
f698d856 | 1405 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1406 | struct ieee80211_mgmt *mgmt, |
1407 | size_t len, | |
1408 | struct ieee80211_rx_status *rx_status) | |
1409 | { | |
ae6a44e3 EK |
1410 | size_t baselen; |
1411 | struct ieee802_11_elems elems; | |
1412 | ||
8e7cdbb6 TW |
1413 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
1414 | return; /* ignore ProbeResp to foreign address */ | |
1415 | ||
ae6a44e3 EK |
1416 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
1417 | if (baselen > len) | |
1418 | return; | |
1419 | ||
1420 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
1421 | &elems); | |
1422 | ||
98c8fccf | 1423 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
1424 | |
1425 | /* direct probe may be part of the association flow */ | |
1426 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, | |
46900298 | 1427 | &sdata->u.mgd.request)) { |
9859b81e RR |
1428 | printk(KERN_DEBUG "%s direct probe responded\n", |
1429 | sdata->dev->name); | |
46900298 | 1430 | ieee80211_authenticate(sdata); |
9859b81e | 1431 | } |
f0706e82 JB |
1432 | } |
1433 | ||
f698d856 | 1434 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1435 | struct ieee80211_mgmt *mgmt, |
1436 | size_t len, | |
1437 | struct ieee80211_rx_status *rx_status) | |
1438 | { | |
46900298 | 1439 | struct ieee80211_if_managed *ifmgd; |
f0706e82 JB |
1440 | size_t baselen; |
1441 | struct ieee802_11_elems elems; | |
f698d856 | 1442 | struct ieee80211_local *local = sdata->local; |
471b3efd | 1443 | u32 changed = 0; |
1fb3606b | 1444 | bool erp_valid, directed_tim; |
7a5158ef | 1445 | u8 erp_value = 0; |
f0706e82 | 1446 | |
ae6a44e3 EK |
1447 | /* Process beacon from the current BSS */ |
1448 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
1449 | if (baselen > len) | |
1450 | return; | |
1451 | ||
1452 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
1453 | ||
98c8fccf | 1454 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
f0706e82 | 1455 | |
05c914fe | 1456 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
f0706e82 | 1457 | return; |
f0706e82 | 1458 | |
46900298 JB |
1459 | ifmgd = &sdata->u.mgd; |
1460 | ||
1461 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) || | |
1462 | memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0) | |
f0706e82 JB |
1463 | return; |
1464 | ||
c481ec97 S |
1465 | if (rx_status->freq != local->hw.conf.channel->center_freq) |
1466 | return; | |
1467 | ||
46900298 | 1468 | ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param, |
fe3fa827 JB |
1469 | elems.wmm_param_len); |
1470 | ||
25c9c875 | 1471 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { |
46900298 | 1472 | directed_tim = ieee80211_check_tim(&elems, ifmgd->aid); |
a97b77b9 | 1473 | |
1fb3606b | 1474 | if (directed_tim) { |
572e0012 KV |
1475 | if (local->hw.conf.dynamic_ps_timeout > 0) { |
1476 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
1477 | ieee80211_hw_config(local, | |
1478 | IEEE80211_CONF_CHANGE_PS); | |
1479 | ieee80211_send_nullfunc(local, sdata, 0); | |
1480 | } else { | |
1481 | local->pspolling = true; | |
1482 | ||
1483 | /* | |
1484 | * Here is assumed that the driver will be | |
1485 | * able to send ps-poll frame and receive a | |
1486 | * response even though power save mode is | |
1487 | * enabled, but some drivers might require | |
1488 | * to disable power save here. This needs | |
1489 | * to be investigated. | |
1490 | */ | |
1491 | ieee80211_send_pspoll(local, sdata); | |
1492 | } | |
a97b77b9 VN |
1493 | } |
1494 | } | |
7a5158ef JB |
1495 | |
1496 | if (elems.erp_info && elems.erp_info_len >= 1) { | |
1497 | erp_valid = true; | |
1498 | erp_value = elems.erp_info[0]; | |
1499 | } else { | |
1500 | erp_valid = false; | |
50c4afb9 | 1501 | } |
7a5158ef JB |
1502 | changed |= ieee80211_handle_bss_capability(sdata, |
1503 | le16_to_cpu(mgmt->u.beacon.capab_info), | |
1504 | erp_valid, erp_value); | |
f0706e82 | 1505 | |
d3c990fb | 1506 | |
53d6f81c | 1507 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
46900298 | 1508 | !(ifmgd->flags & IEEE80211_STA_TKIP_WEP_USED)) { |
ae5eb026 JB |
1509 | struct sta_info *sta; |
1510 | struct ieee80211_supported_band *sband; | |
1511 | u16 ap_ht_cap_flags; | |
1512 | ||
1513 | rcu_read_lock(); | |
1514 | ||
46900298 | 1515 | sta = sta_info_get(local, ifmgd->bssid); |
ae5eb026 JB |
1516 | if (!sta) { |
1517 | rcu_read_unlock(); | |
1518 | return; | |
1519 | } | |
1520 | ||
1521 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1522 | ||
1523 | ieee80211_ht_cap_ie_to_sta_ht_cap(sband, | |
1524 | elems.ht_cap_elem, &sta->sta.ht_cap); | |
1525 | ||
1526 | ap_ht_cap_flags = sta->sta.ht_cap.cap; | |
1527 | ||
1528 | rcu_read_unlock(); | |
1529 | ||
1530 | changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, | |
1531 | ap_ht_cap_flags); | |
d3c990fb RR |
1532 | } |
1533 | ||
3f2355cb LR |
1534 | if (elems.country_elem) { |
1535 | /* Note we are only reviewing this on beacons | |
1536 | * for the BSSID we are associated to */ | |
1537 | regulatory_hint_11d(local->hw.wiphy, | |
1538 | elems.country_elem, elems.country_elem_len); | |
a8302de9 VT |
1539 | |
1540 | /* TODO: IBSS also needs this */ | |
1541 | if (elems.pwr_constr_elem) | |
1542 | ieee80211_handle_pwr_constr(sdata, | |
1543 | le16_to_cpu(mgmt->u.probe_resp.capab_info), | |
1544 | elems.pwr_constr_elem, | |
1545 | elems.pwr_constr_elem_len); | |
3f2355cb LR |
1546 | } |
1547 | ||
471b3efd | 1548 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
1549 | } |
1550 | ||
46900298 JB |
1551 | ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, |
1552 | struct sk_buff *skb, | |
1553 | struct ieee80211_rx_status *rx_status) | |
f0706e82 | 1554 | { |
f698d856 | 1555 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1556 | struct ieee80211_mgmt *mgmt; |
1557 | u16 fc; | |
1558 | ||
1559 | if (skb->len < 24) | |
46900298 | 1560 | return RX_DROP_MONITOR; |
f0706e82 JB |
1561 | |
1562 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1563 | fc = le16_to_cpu(mgmt->frame_control); | |
1564 | ||
1565 | switch (fc & IEEE80211_FCTL_STYPE) { | |
1566 | case IEEE80211_STYPE_PROBE_REQ: | |
1567 | case IEEE80211_STYPE_PROBE_RESP: | |
1568 | case IEEE80211_STYPE_BEACON: | |
1569 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); | |
1570 | case IEEE80211_STYPE_AUTH: | |
1571 | case IEEE80211_STYPE_ASSOC_RESP: | |
1572 | case IEEE80211_STYPE_REASSOC_RESP: | |
1573 | case IEEE80211_STYPE_DEAUTH: | |
1574 | case IEEE80211_STYPE_DISASSOC: | |
46900298 JB |
1575 | skb_queue_tail(&sdata->u.mgd.skb_queue, skb); |
1576 | queue_work(local->hw.workqueue, &sdata->u.mgd.work); | |
1577 | return RX_QUEUED; | |
f0706e82 JB |
1578 | } |
1579 | ||
46900298 | 1580 | return RX_DROP_MONITOR; |
f0706e82 JB |
1581 | } |
1582 | ||
f698d856 | 1583 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1584 | struct sk_buff *skb) |
1585 | { | |
1586 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
1587 | struct ieee80211_mgmt *mgmt; |
1588 | u16 fc; | |
1589 | ||
f0706e82 JB |
1590 | rx_status = (struct ieee80211_rx_status *) skb->cb; |
1591 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
1592 | fc = le16_to_cpu(mgmt->frame_control); | |
1593 | ||
46900298 JB |
1594 | switch (fc & IEEE80211_FCTL_STYPE) { |
1595 | case IEEE80211_STYPE_PROBE_RESP: | |
1596 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, | |
1597 | rx_status); | |
1598 | break; | |
1599 | case IEEE80211_STYPE_BEACON: | |
1600 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, | |
1601 | rx_status); | |
1602 | break; | |
1603 | case IEEE80211_STYPE_AUTH: | |
1604 | ieee80211_rx_mgmt_auth(sdata, mgmt, skb->len); | |
1605 | break; | |
1606 | case IEEE80211_STYPE_ASSOC_RESP: | |
1607 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 0); | |
1608 | break; | |
1609 | case IEEE80211_STYPE_REASSOC_RESP: | |
1610 | ieee80211_rx_mgmt_assoc_resp(sdata, mgmt, skb->len, 1); | |
1611 | break; | |
1612 | case IEEE80211_STYPE_DEAUTH: | |
1613 | ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); | |
1614 | break; | |
1615 | case IEEE80211_STYPE_DISASSOC: | |
1616 | ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); | |
1617 | break; | |
f0706e82 JB |
1618 | } |
1619 | ||
1620 | kfree_skb(skb); | |
1621 | } | |
1622 | ||
9c6bd790 | 1623 | static void ieee80211_sta_timer(unsigned long data) |
f0706e82 | 1624 | { |
60f8b39c JB |
1625 | struct ieee80211_sub_if_data *sdata = |
1626 | (struct ieee80211_sub_if_data *) data; | |
46900298 | 1627 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 1628 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 1629 | |
46900298 JB |
1630 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
1631 | queue_work(local->hw.workqueue, &ifmgd->work); | |
f0706e82 JB |
1632 | } |
1633 | ||
46900298 | 1634 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1635 | { |
46900298 | 1636 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1637 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1638 | |
1639 | if (local->ops->reset_tsf) { | |
1640 | /* Reset own TSF to allow time synchronization work. */ | |
1641 | local->ops->reset_tsf(local_to_hw(local)); | |
1642 | } | |
1643 | ||
46900298 | 1644 | ifmgd->wmm_last_param_set = -1; /* allow any WMM update */ |
f0706e82 JB |
1645 | |
1646 | ||
46900298 JB |
1647 | if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_OPEN) |
1648 | ifmgd->auth_alg = WLAN_AUTH_OPEN; | |
1649 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1650 | ifmgd->auth_alg = WLAN_AUTH_SHARED_KEY; | |
1651 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1652 | ifmgd->auth_alg = WLAN_AUTH_LEAP; | |
636a5d36 JM |
1653 | else if (ifmgd->auth_algs & IEEE80211_AUTH_ALG_FT) |
1654 | ifmgd->auth_alg = WLAN_AUTH_FT; | |
f0706e82 | 1655 | else |
46900298 JB |
1656 | ifmgd->auth_alg = WLAN_AUTH_OPEN; |
1657 | ifmgd->auth_transaction = -1; | |
1658 | ifmgd->flags &= ~IEEE80211_STA_ASSOCIATED; | |
1659 | ifmgd->assoc_scan_tries = 0; | |
1660 | ifmgd->direct_probe_tries = 0; | |
1661 | ifmgd->auth_tries = 0; | |
1662 | ifmgd->assoc_tries = 0; | |
24e64622 | 1663 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 1664 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
1665 | } |
1666 | ||
46900298 | 1667 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 1668 | { |
46900298 | 1669 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f698d856 | 1670 | struct ieee80211_local *local = sdata->local; |
c2b13452 | 1671 | struct ieee80211_bss *bss; |
46900298 JB |
1672 | u8 *bssid = ifmgd->bssid, *ssid = ifmgd->ssid; |
1673 | u8 ssid_len = ifmgd->ssid_len; | |
00d3f14c JB |
1674 | u16 capa_mask = WLAN_CAPABILITY_ESS; |
1675 | u16 capa_val = WLAN_CAPABILITY_ESS; | |
1676 | struct ieee80211_channel *chan = local->oper_channel; | |
1677 | ||
636a5d36 JM |
1678 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) && |
1679 | ifmgd->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
00d3f14c JB |
1680 | IEEE80211_STA_AUTO_BSSID_SEL | |
1681 | IEEE80211_STA_AUTO_CHANNEL_SEL)) { | |
1682 | capa_mask |= WLAN_CAPABILITY_PRIVACY; | |
1683 | if (sdata->default_key) | |
1684 | capa_val |= WLAN_CAPABILITY_PRIVACY; | |
f0706e82 | 1685 | } |
9d139c81 | 1686 | |
46900298 | 1687 | if (ifmgd->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) |
00d3f14c JB |
1688 | chan = NULL; |
1689 | ||
46900298 | 1690 | if (ifmgd->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
00d3f14c JB |
1691 | bssid = NULL; |
1692 | ||
46900298 | 1693 | if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) { |
00d3f14c JB |
1694 | ssid = NULL; |
1695 | ssid_len = 0; | |
1696 | } | |
1697 | ||
1698 | bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, | |
1699 | bssid, ssid, ssid_len, | |
1700 | capa_mask, capa_val); | |
1701 | ||
1702 | if (bss) { | |
1703 | ieee80211_set_freq(sdata, bss->cbss.channel->center_freq); | |
46900298 | 1704 | if (!(ifmgd->flags & IEEE80211_STA_SSID_SET)) |
00d3f14c JB |
1705 | ieee80211_sta_set_ssid(sdata, bss->ssid, |
1706 | bss->ssid_len); | |
1707 | ieee80211_sta_set_bssid(sdata, bss->cbss.bssid); | |
1708 | ieee80211_sta_def_wmm_params(sdata, bss->supp_rates_len, | |
1709 | bss->supp_rates); | |
46900298 JB |
1710 | if (sdata->u.mgd.mfp == IEEE80211_MFP_REQUIRED) |
1711 | sdata->u.mgd.flags |= IEEE80211_STA_MFP_ENABLED; | |
fdfacf0a | 1712 | else |
46900298 | 1713 | sdata->u.mgd.flags &= ~IEEE80211_STA_MFP_ENABLED; |
f0706e82 | 1714 | |
9c6bd790 JB |
1715 | /* Send out direct probe if no probe resp was received or |
1716 | * the one we have is outdated | |
1717 | */ | |
00d3f14c JB |
1718 | if (!bss->last_probe_resp || |
1719 | time_after(jiffies, bss->last_probe_resp | |
9c6bd790 | 1720 | + IEEE80211_SCAN_RESULT_EXPIRE)) |
46900298 | 1721 | ifmgd->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
9c6bd790 | 1722 | else |
46900298 | 1723 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
f0706e82 | 1724 | |
00d3f14c | 1725 | ieee80211_rx_bss_put(local, bss); |
46900298 | 1726 | ieee80211_sta_reset_auth(sdata); |
9c6bd790 JB |
1727 | return 0; |
1728 | } else { | |
46900298 JB |
1729 | if (ifmgd->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { |
1730 | ifmgd->assoc_scan_tries++; | |
2a519311 JB |
1731 | /* XXX maybe racy? */ |
1732 | if (local->scan_req) | |
1733 | return -1; | |
1734 | memcpy(local->int_scan_req.ssids[0].ssid, | |
46900298 JB |
1735 | ifmgd->ssid, IEEE80211_MAX_SSID_LEN); |
1736 | if (ifmgd->flags & IEEE80211_STA_AUTO_SSID_SEL) | |
2a519311 | 1737 | local->int_scan_req.ssids[0].ssid_len = 0; |
9c6bd790 | 1738 | else |
46900298 | 1739 | local->int_scan_req.ssids[0].ssid_len = ifmgd->ssid_len; |
af88b907 HS |
1740 | |
1741 | if (ieee80211_start_scan(sdata, &local->int_scan_req)) | |
1742 | ieee80211_scan_failed(local); | |
1743 | ||
46900298 JB |
1744 | ifmgd->state = IEEE80211_STA_MLME_AUTHENTICATE; |
1745 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
e374055a | 1746 | } else { |
46900298 JB |
1747 | ifmgd->assoc_scan_tries = 0; |
1748 | ifmgd->state = IEEE80211_STA_MLME_DISABLED; | |
e374055a | 1749 | } |
9c6bd790 JB |
1750 | } |
1751 | return -1; | |
1752 | } | |
1753 | ||
1754 | ||
1755 | static void ieee80211_sta_work(struct work_struct *work) | |
1756 | { | |
1757 | struct ieee80211_sub_if_data *sdata = | |
46900298 | 1758 | container_of(work, struct ieee80211_sub_if_data, u.mgd.work); |
9c6bd790 | 1759 | struct ieee80211_local *local = sdata->local; |
46900298 | 1760 | struct ieee80211_if_managed *ifmgd; |
9c6bd790 JB |
1761 | struct sk_buff *skb; |
1762 | ||
1763 | if (!netif_running(sdata->dev)) | |
1764 | return; | |
1765 | ||
c2b13452 | 1766 | if (local->sw_scanning || local->hw_scanning) |
9c6bd790 JB |
1767 | return; |
1768 | ||
46900298 | 1769 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 1770 | return; |
46900298 | 1771 | ifmgd = &sdata->u.mgd; |
f0706e82 | 1772 | |
46900298 | 1773 | while ((skb = skb_dequeue(&ifmgd->skb_queue))) |
9c6bd790 JB |
1774 | ieee80211_sta_rx_queued_mgmt(sdata, skb); |
1775 | ||
46900298 JB |
1776 | if (ifmgd->state != IEEE80211_STA_MLME_DIRECT_PROBE && |
1777 | ifmgd->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
1778 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE && | |
1779 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request)) { | |
af88b907 HS |
1780 | /* |
1781 | * The call to ieee80211_start_scan can fail but ieee80211_request_scan | |
1782 | * (which queued ieee80211_sta_work) did not return an error. Thus, call | |
1783 | * ieee80211_scan_failed here if ieee80211_start_scan fails in order to | |
1784 | * notify the scan requester. | |
1785 | */ | |
1786 | if (ieee80211_start_scan(sdata, local->scan_req)) | |
1787 | ieee80211_scan_failed(local); | |
9c6bd790 | 1788 | return; |
f0706e82 JB |
1789 | } |
1790 | ||
46900298 JB |
1791 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request)) { |
1792 | if (ieee80211_sta_config_auth(sdata)) | |
9c6bd790 | 1793 | return; |
46900298 JB |
1794 | clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); |
1795 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request)) | |
9c6bd790 | 1796 | return; |
d6f2da5b | 1797 | |
46900298 | 1798 | switch (ifmgd->state) { |
9c6bd790 JB |
1799 | case IEEE80211_STA_MLME_DISABLED: |
1800 | break; | |
1801 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
46900298 | 1802 | ieee80211_direct_probe(sdata); |
9c6bd790 JB |
1803 | break; |
1804 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
46900298 | 1805 | ieee80211_authenticate(sdata); |
9c6bd790 JB |
1806 | break; |
1807 | case IEEE80211_STA_MLME_ASSOCIATE: | |
46900298 | 1808 | ieee80211_associate(sdata); |
9c6bd790 JB |
1809 | break; |
1810 | case IEEE80211_STA_MLME_ASSOCIATED: | |
46900298 | 1811 | ieee80211_associated(sdata); |
9c6bd790 JB |
1812 | break; |
1813 | default: | |
1814 | WARN_ON(1); | |
1815 | break; | |
1816 | } | |
1817 | ||
46900298 | 1818 | if (ieee80211_privacy_mismatch(sdata)) { |
9c6bd790 JB |
1819 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " |
1820 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
1821 | ||
46900298 | 1822 | ieee80211_set_disassoc(sdata, false, true, |
9c6bd790 JB |
1823 | WLAN_REASON_UNSPECIFIED); |
1824 | } | |
f0706e82 JB |
1825 | } |
1826 | ||
9c6bd790 JB |
1827 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
1828 | { | |
05c914fe | 1829 | if (sdata->vif.type == NL80211_IFTYPE_STATION) |
9c6bd790 | 1830 | queue_work(sdata->local->hw.workqueue, |
46900298 | 1831 | &sdata->u.mgd.work); |
9c6bd790 | 1832 | } |
f0706e82 | 1833 | |
9c6bd790 JB |
1834 | /* interface setup */ |
1835 | void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) | |
f0706e82 | 1836 | { |
46900298 | 1837 | struct ieee80211_if_managed *ifmgd; |
988c0f72 | 1838 | |
46900298 JB |
1839 | ifmgd = &sdata->u.mgd; |
1840 | INIT_WORK(&ifmgd->work, ieee80211_sta_work); | |
1841 | INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); | |
1842 | setup_timer(&ifmgd->timer, ieee80211_sta_timer, | |
c481ec97 | 1843 | (unsigned long) sdata); |
46900298 | 1844 | setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, |
9c6bd790 | 1845 | (unsigned long) sdata); |
46900298 | 1846 | skb_queue_head_init(&ifmgd->skb_queue); |
9c6bd790 | 1847 | |
46900298 JB |
1848 | ifmgd->capab = WLAN_CAPABILITY_ESS; |
1849 | ifmgd->auth_algs = IEEE80211_AUTH_ALG_OPEN | | |
9c6bd790 | 1850 | IEEE80211_AUTH_ALG_SHARED_KEY; |
46900298 | 1851 | ifmgd->flags |= IEEE80211_STA_CREATE_IBSS | |
9c6bd790 JB |
1852 | IEEE80211_STA_AUTO_BSSID_SEL | |
1853 | IEEE80211_STA_AUTO_CHANNEL_SEL; | |
176be728 | 1854 | if (sdata->local->hw.queues >= 4) |
46900298 | 1855 | ifmgd->flags |= IEEE80211_STA_WMM_ENABLED; |
f0706e82 JB |
1856 | } |
1857 | ||
9c6bd790 | 1858 | /* configuration hooks */ |
46900298 | 1859 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata) |
60f8b39c | 1860 | { |
46900298 | 1861 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
60f8b39c | 1862 | struct ieee80211_local *local = sdata->local; |
60f8b39c | 1863 | |
46900298 | 1864 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) |
9c6bd790 | 1865 | return; |
60f8b39c | 1866 | |
46900298 | 1867 | if ((ifmgd->flags & (IEEE80211_STA_BSSID_SET | |
9c6bd790 | 1868 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
46900298 | 1869 | (ifmgd->flags & (IEEE80211_STA_SSID_SET | |
9c6bd790 | 1870 | IEEE80211_STA_AUTO_SSID_SEL))) { |
60f8b39c | 1871 | |
46900298 JB |
1872 | if (ifmgd->state == IEEE80211_STA_MLME_ASSOCIATED) |
1873 | ieee80211_set_disassoc(sdata, true, true, | |
9c6bd790 | 1874 | WLAN_REASON_DEAUTH_LEAVING); |
60f8b39c | 1875 | |
636a5d36 JM |
1876 | if (!(ifmgd->flags & IEEE80211_STA_EXT_SME) || |
1877 | ifmgd->state != IEEE80211_STA_MLME_ASSOCIATE) | |
1878 | set_bit(IEEE80211_STA_REQ_AUTH, &ifmgd->request); | |
1879 | else if (ifmgd->flags & IEEE80211_STA_EXT_SME) | |
1880 | set_bit(IEEE80211_STA_REQ_RUN, &ifmgd->request); | |
46900298 | 1881 | queue_work(local->hw.workqueue, &ifmgd->work); |
9c6bd790 JB |
1882 | } |
1883 | } | |
60f8b39c | 1884 | |
79f6440c AF |
1885 | int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata) |
1886 | { | |
1887 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; | |
1888 | ||
79f6440c AF |
1889 | if (ifmgd->ssid_len) |
1890 | ifmgd->flags |= IEEE80211_STA_SSID_SET; | |
1891 | else | |
1892 | ifmgd->flags &= ~IEEE80211_STA_SSID_SET; | |
1893 | ||
1894 | return 0; | |
1895 | } | |
1896 | ||
9c6bd790 JB |
1897 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
1898 | { | |
46900298 | 1899 | struct ieee80211_if_managed *ifmgd; |
60f8b39c | 1900 | |
9c6bd790 JB |
1901 | if (len > IEEE80211_MAX_SSID_LEN) |
1902 | return -EINVAL; | |
1903 | ||
46900298 | 1904 | ifmgd = &sdata->u.mgd; |
9c6bd790 | 1905 | |
46900298 | 1906 | if (ifmgd->ssid_len != len || memcmp(ifmgd->ssid, ssid, len) != 0) { |
a299542e JM |
1907 | /* |
1908 | * Do not use reassociation if SSID is changed (different ESS). | |
1909 | */ | |
1910 | ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
46900298 JB |
1911 | memset(ifmgd->ssid, 0, sizeof(ifmgd->ssid)); |
1912 | memcpy(ifmgd->ssid, ssid, len); | |
1913 | ifmgd->ssid_len = len; | |
60f8b39c | 1914 | } |
60f8b39c | 1915 | |
79f6440c | 1916 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
1917 | } |
1918 | ||
1919 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) | |
1920 | { | |
46900298 JB |
1921 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
1922 | memcpy(ssid, ifmgd->ssid, ifmgd->ssid_len); | |
1923 | *len = ifmgd->ssid_len; | |
9c6bd790 JB |
1924 | return 0; |
1925 | } | |
1926 | ||
1927 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) | |
1928 | { | |
46900298 | 1929 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 1930 | |
dfe67012 | 1931 | if (is_valid_ether_addr(bssid)) { |
46900298 JB |
1932 | memcpy(ifmgd->bssid, bssid, ETH_ALEN); |
1933 | ifmgd->flags |= IEEE80211_STA_BSSID_SET; | |
dfe67012 | 1934 | } else { |
46900298 JB |
1935 | memset(ifmgd->bssid, 0, ETH_ALEN); |
1936 | ifmgd->flags &= ~IEEE80211_STA_BSSID_SET; | |
dfe67012 AF |
1937 | } |
1938 | ||
1939 | if (netif_running(sdata->dev)) { | |
1940 | if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) { | |
9c6bd790 JB |
1941 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " |
1942 | "the low-level driver\n", sdata->dev->name); | |
9c6bd790 JB |
1943 | } |
1944 | } | |
60f8b39c | 1945 | |
79f6440c | 1946 | return ieee80211_sta_commit(sdata); |
9c6bd790 JB |
1947 | } |
1948 | ||
636a5d36 JM |
1949 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, |
1950 | const char *ie, size_t len) | |
9c6bd790 | 1951 | { |
46900298 | 1952 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
9c6bd790 | 1953 | |
46900298 | 1954 | kfree(ifmgd->extra_ie); |
9c6bd790 | 1955 | if (len == 0) { |
46900298 JB |
1956 | ifmgd->extra_ie = NULL; |
1957 | ifmgd->extra_ie_len = 0; | |
60f8b39c | 1958 | return 0; |
60f8b39c | 1959 | } |
46900298 JB |
1960 | ifmgd->extra_ie = kmalloc(len, GFP_KERNEL); |
1961 | if (!ifmgd->extra_ie) { | |
1962 | ifmgd->extra_ie_len = 0; | |
9c6bd790 JB |
1963 | return -ENOMEM; |
1964 | } | |
46900298 JB |
1965 | memcpy(ifmgd->extra_ie, ie, len); |
1966 | ifmgd->extra_ie_len = len; | |
9c6bd790 | 1967 | return 0; |
60f8b39c JB |
1968 | } |
1969 | ||
f698d856 | 1970 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 1971 | { |
f4ea83dd | 1972 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 1973 | sdata->dev->name, reason); |
f0706e82 | 1974 | |
46900298 | 1975 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
f0706e82 JB |
1976 | return -EINVAL; |
1977 | ||
46900298 | 1978 | ieee80211_set_disassoc(sdata, true, true, reason); |
f0706e82 JB |
1979 | return 0; |
1980 | } | |
1981 | ||
f698d856 | 1982 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 1983 | { |
46900298 | 1984 | struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; |
f0706e82 | 1985 | |
f4ea83dd | 1986 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 1987 | sdata->dev->name, reason); |
f0706e82 | 1988 | |
05c914fe | 1989 | if (sdata->vif.type != NL80211_IFTYPE_STATION) |
f0706e82 JB |
1990 | return -EINVAL; |
1991 | ||
46900298 JB |
1992 | if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED)) |
1993 | return -ENOLINK; | |
f0706e82 | 1994 | |
46900298 | 1995 | ieee80211_set_disassoc(sdata, false, true, reason); |
f0706e82 JB |
1996 | return 0; |
1997 | } | |
84363e6e | 1998 | |
9c6bd790 JB |
1999 | /* scan finished notification */ |
2000 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
2001 | { | |
2002 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
9c6bd790 JB |
2003 | |
2004 | /* Restart STA timers */ | |
2005 | rcu_read_lock(); | |
2006 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
2007 | ieee80211_restart_sta_timer(sdata); | |
2008 | rcu_read_unlock(); | |
2009 | } | |
520eb820 KV |
2010 | |
2011 | void ieee80211_dynamic_ps_disable_work(struct work_struct *work) | |
2012 | { | |
2013 | struct ieee80211_local *local = | |
2014 | container_of(work, struct ieee80211_local, | |
2015 | dynamic_ps_disable_work); | |
2016 | ||
2017 | if (local->hw.conf.flags & IEEE80211_CONF_PS) { | |
2018 | local->hw.conf.flags &= ~IEEE80211_CONF_PS; | |
2019 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); | |
2020 | } | |
2021 | ||
2022 | ieee80211_wake_queues_by_reason(&local->hw, | |
2023 | IEEE80211_QUEUE_STOP_REASON_PS); | |
2024 | } | |
2025 | ||
2026 | void ieee80211_dynamic_ps_enable_work(struct work_struct *work) | |
2027 | { | |
2028 | struct ieee80211_local *local = | |
2029 | container_of(work, struct ieee80211_local, | |
2030 | dynamic_ps_enable_work); | |
a97b77b9 | 2031 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; |
520eb820 KV |
2032 | |
2033 | if (local->hw.conf.flags & IEEE80211_CONF_PS) | |
2034 | return; | |
2035 | ||
4be8c387 JB |
2036 | if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) |
2037 | ieee80211_send_nullfunc(local, sdata, 1); | |
520eb820 | 2038 | |
4be8c387 | 2039 | local->hw.conf.flags |= IEEE80211_CONF_PS; |
520eb820 KV |
2040 | ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); |
2041 | } | |
2042 | ||
2043 | void ieee80211_dynamic_ps_timer(unsigned long data) | |
2044 | { | |
2045 | struct ieee80211_local *local = (void *) data; | |
2046 | ||
2047 | queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work); | |
2048 | } | |
46900298 JB |
2049 | |
2050 | void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
2051 | struct ieee80211_sub_if_data *sdata, | |
2052 | int powersave) | |
2053 | { | |
2054 | struct sk_buff *skb; | |
2055 | struct ieee80211_hdr *nullfunc; | |
2056 | __le16 fc; | |
2057 | ||
2058 | if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) | |
2059 | return; | |
2060 | ||
2061 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
2062 | if (!skb) { | |
2063 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
2064 | "frame\n", sdata->dev->name); | |
2065 | return; | |
2066 | } | |
2067 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2068 | ||
2069 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
2070 | memset(nullfunc, 0, 24); | |
2071 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
2072 | IEEE80211_FCTL_TODS); | |
2073 | if (powersave) | |
2074 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); | |
2075 | nullfunc->frame_control = fc; | |
2076 | memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); | |
2077 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
2078 | memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); | |
2079 | ||
2080 | ieee80211_tx_skb(sdata, skb, 0); | |
2081 | } |