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f0706e82 JB |
1 | /* |
2 | * BSS client mode implementation | |
3 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
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> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/if_arp.h> | |
19 | #include <linux/wireless.h> | |
20 | #include <linux/random.h> | |
21 | #include <linux/etherdevice.h> | |
d0709a65 | 22 | #include <linux/rtnetlink.h> |
f0706e82 | 23 | #include <net/iw_handler.h> |
f0706e82 | 24 | #include <net/mac80211.h> |
60f8b39c | 25 | |
f0706e82 | 26 | #include "ieee80211_i.h" |
2c8dccc7 JB |
27 | #include "rate.h" |
28 | #include "led.h" | |
f709fc69 | 29 | #include "mesh.h" |
f0706e82 | 30 | |
6042a3e3 | 31 | #define IEEE80211_ASSOC_SCANS_MAX_TRIES 2 |
f0706e82 JB |
32 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) |
33 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
34 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
35 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
36 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 37 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
38 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
39 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
40 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
41 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 42 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 | 43 | |
f0706e82 JB |
44 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) |
45 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 46 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
47 | |
48 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
49 | ||
50 | ||
5484e237 JB |
51 | /* utils */ |
52 | static int ecw2cw(int ecw) | |
60f8b39c | 53 | { |
5484e237 | 54 | return (1 << ecw) - 1; |
60f8b39c JB |
55 | } |
56 | ||
57 | static u8 *ieee80211_bss_get_ie(struct ieee80211_sta_bss *bss, u8 ie) | |
43ac2ca3 JM |
58 | { |
59 | u8 *end, *pos; | |
60 | ||
61 | pos = bss->ies; | |
62 | if (pos == NULL) | |
63 | return NULL; | |
64 | end = pos + bss->ies_len; | |
65 | ||
66 | while (pos + 1 < end) { | |
67 | if (pos + 2 + pos[1] > end) | |
68 | break; | |
69 | if (pos[0] == ie) | |
70 | return pos; | |
71 | pos += 2 + pos[1]; | |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
9ac19a90 JB |
77 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
78 | struct ieee80211_supported_band *sband, | |
79 | u64 *rates) | |
80 | { | |
81 | int i, j, count; | |
82 | *rates = 0; | |
83 | count = 0; | |
84 | for (i = 0; i < bss->supp_rates_len; i++) { | |
85 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
86 | ||
87 | for (j = 0; j < sband->n_bitrates; j++) | |
88 | if (sband->bitrates[j].bitrate == rate) { | |
89 | *rates |= BIT(j); | |
90 | count++; | |
91 | break; | |
92 | } | |
93 | } | |
94 | ||
95 | return count; | |
96 | } | |
97 | ||
60f8b39c JB |
98 | /* frame sending functions */ |
99 | void ieee80211_sta_tx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, | |
100 | int encrypt) | |
101 | { | |
102 | skb->dev = sdata->local->mdev; | |
103 | skb_set_mac_header(skb, 0); | |
104 | skb_set_network_header(skb, 0); | |
105 | skb_set_transport_header(skb, 0); | |
e2839d8f | 106 | |
60f8b39c JB |
107 | skb->iif = sdata->dev->ifindex; |
108 | skb->do_not_encrypt = !encrypt; | |
109 | ||
110 | dev_queue_xmit(skb); | |
111 | } | |
112 | ||
113 | static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, | |
114 | struct ieee80211_if_sta *ifsta, | |
115 | int transaction, u8 *extra, size_t extra_len, | |
116 | int encrypt) | |
117 | { | |
118 | struct ieee80211_local *local = sdata->local; | |
119 | struct sk_buff *skb; | |
120 | struct ieee80211_mgmt *mgmt; | |
121 | ||
122 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
123 | sizeof(*mgmt) + 6 + extra_len); | |
124 | if (!skb) { | |
125 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
126 | "frame\n", sdata->dev->name); | |
127 | return; | |
128 | } | |
129 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
130 | ||
131 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
132 | memset(mgmt, 0, 24 + 6); | |
133 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
134 | IEEE80211_STYPE_AUTH); | |
135 | if (encrypt) | |
136 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
137 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
138 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
139 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
140 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
141 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
142 | ifsta->auth_transaction = transaction + 1; | |
143 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
144 | if (extra) | |
145 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
146 | ||
147 | ieee80211_sta_tx(sdata, skb, encrypt); | |
148 | } | |
149 | ||
0a51b27e JB |
150 | void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst, |
151 | u8 *ssid, size_t ssid_len) | |
60f8b39c JB |
152 | { |
153 | struct ieee80211_local *local = sdata->local; | |
154 | struct ieee80211_supported_band *sband; | |
155 | struct sk_buff *skb; | |
156 | struct ieee80211_mgmt *mgmt; | |
157 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
158 | int i; | |
159 | ||
160 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
161 | if (!skb) { | |
162 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
163 | "request\n", sdata->dev->name); | |
164 | return; | |
165 | } | |
166 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
167 | ||
168 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
169 | memset(mgmt, 0, 24); | |
170 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
171 | IEEE80211_STYPE_PROBE_REQ); | |
172 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
173 | if (dst) { | |
174 | memcpy(mgmt->da, dst, ETH_ALEN); | |
175 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
176 | } else { | |
177 | memset(mgmt->da, 0xff, ETH_ALEN); | |
178 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
179 | } | |
180 | pos = skb_put(skb, 2 + ssid_len); | |
181 | *pos++ = WLAN_EID_SSID; | |
182 | *pos++ = ssid_len; | |
183 | memcpy(pos, ssid, ssid_len); | |
184 | ||
185 | supp_rates = skb_put(skb, 2); | |
186 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
187 | supp_rates[1] = 0; | |
188 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
189 | ||
190 | for (i = 0; i < sband->n_bitrates; i++) { | |
191 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
192 | if (esupp_rates) { | |
193 | pos = skb_put(skb, 1); | |
194 | esupp_rates[1]++; | |
195 | } else if (supp_rates[1] == 8) { | |
196 | esupp_rates = skb_put(skb, 3); | |
197 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
198 | esupp_rates[1] = 1; | |
199 | pos = &esupp_rates[2]; | |
200 | } else { | |
201 | pos = skb_put(skb, 1); | |
202 | supp_rates[1]++; | |
203 | } | |
204 | *pos = rate->bitrate / 5; | |
205 | } | |
206 | ||
207 | ieee80211_sta_tx(sdata, skb, 0); | |
208 | } | |
209 | ||
9ac19a90 JB |
210 | static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata, |
211 | struct ieee80211_if_sta *ifsta) | |
212 | { | |
213 | struct ieee80211_local *local = sdata->local; | |
214 | struct sk_buff *skb; | |
215 | struct ieee80211_mgmt *mgmt; | |
216 | u8 *pos, *ies, *ht_add_ie; | |
217 | int i, len, count, rates_len, supp_rates_len; | |
218 | u16 capab; | |
219 | struct ieee80211_sta_bss *bss; | |
220 | int wmm = 0; | |
221 | struct ieee80211_supported_band *sband; | |
222 | u64 rates = 0; | |
223 | ||
224 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
225 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
226 | ifsta->ssid_len); | |
227 | if (!skb) { | |
228 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
229 | "frame\n", sdata->dev->name); | |
230 | return; | |
231 | } | |
232 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
233 | ||
234 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
235 | ||
236 | capab = ifsta->capab; | |
237 | ||
238 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
239 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
240 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
241 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
242 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
243 | } | |
244 | ||
245 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, | |
246 | local->hw.conf.channel->center_freq, | |
247 | ifsta->ssid, ifsta->ssid_len); | |
248 | if (bss) { | |
249 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
250 | capab |= WLAN_CAPABILITY_PRIVACY; | |
251 | if (bss->wmm_used) | |
252 | wmm = 1; | |
253 | ||
254 | /* get all rates supported by the device and the AP as | |
255 | * some APs don't like getting a superset of their rates | |
256 | * in the association request (e.g. D-Link DAP 1353 in | |
257 | * b-only mode) */ | |
258 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
259 | ||
260 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && | |
261 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
262 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
263 | ||
264 | ieee80211_rx_bss_put(local, bss); | |
265 | } else { | |
266 | rates = ~0; | |
267 | rates_len = sband->n_bitrates; | |
268 | } | |
269 | ||
270 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
271 | memset(mgmt, 0, 24); | |
272 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
273 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
274 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
275 | ||
276 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { | |
277 | skb_put(skb, 10); | |
278 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
279 | IEEE80211_STYPE_REASSOC_REQ); | |
280 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
281 | mgmt->u.reassoc_req.listen_interval = | |
282 | cpu_to_le16(local->hw.conf.listen_interval); | |
283 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
284 | ETH_ALEN); | |
285 | } else { | |
286 | skb_put(skb, 4); | |
287 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
288 | IEEE80211_STYPE_ASSOC_REQ); | |
289 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
290 | mgmt->u.reassoc_req.listen_interval = | |
291 | cpu_to_le16(local->hw.conf.listen_interval); | |
292 | } | |
293 | ||
294 | /* SSID */ | |
295 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
296 | *pos++ = WLAN_EID_SSID; | |
297 | *pos++ = ifsta->ssid_len; | |
298 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
299 | ||
300 | /* add all rates which were marked to be used above */ | |
301 | supp_rates_len = rates_len; | |
302 | if (supp_rates_len > 8) | |
303 | supp_rates_len = 8; | |
304 | ||
305 | len = sband->n_bitrates; | |
306 | pos = skb_put(skb, supp_rates_len + 2); | |
307 | *pos++ = WLAN_EID_SUPP_RATES; | |
308 | *pos++ = supp_rates_len; | |
309 | ||
310 | count = 0; | |
311 | for (i = 0; i < sband->n_bitrates; i++) { | |
312 | if (BIT(i) & rates) { | |
313 | int rate = sband->bitrates[i].bitrate; | |
314 | *pos++ = (u8) (rate / 5); | |
315 | if (++count == 8) | |
316 | break; | |
317 | } | |
318 | } | |
319 | ||
320 | if (rates_len > count) { | |
321 | pos = skb_put(skb, rates_len - count + 2); | |
322 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
323 | *pos++ = rates_len - count; | |
324 | ||
325 | for (i++; i < sband->n_bitrates; i++) { | |
326 | if (BIT(i) & rates) { | |
327 | int rate = sband->bitrates[i].bitrate; | |
328 | *pos++ = (u8) (rate / 5); | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { | |
334 | /* 1. power capabilities */ | |
335 | pos = skb_put(skb, 4); | |
336 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
337 | *pos++ = 2; | |
338 | *pos++ = 0; /* min tx power */ | |
339 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
340 | ||
341 | /* 2. supported channels */ | |
342 | /* TODO: get this in reg domain format */ | |
343 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
344 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
345 | *pos++ = 2 * sband->n_channels; | |
346 | for (i = 0; i < sband->n_channels; i++) { | |
347 | *pos++ = ieee80211_frequency_to_channel( | |
348 | sband->channels[i].center_freq); | |
349 | *pos++ = 1; /* one channel in the subband*/ | |
350 | } | |
351 | } | |
352 | ||
353 | if (ifsta->extra_ie) { | |
354 | pos = skb_put(skb, ifsta->extra_ie_len); | |
355 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
356 | } | |
357 | ||
358 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
359 | pos = skb_put(skb, 9); | |
360 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
361 | *pos++ = 7; /* len */ | |
362 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
363 | *pos++ = 0x50; | |
364 | *pos++ = 0xf2; | |
365 | *pos++ = 2; /* WME */ | |
366 | *pos++ = 0; /* WME info */ | |
367 | *pos++ = 1; /* WME ver */ | |
368 | *pos++ = 0; | |
369 | } | |
370 | ||
371 | /* wmm support is a must to HT */ | |
372 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && | |
373 | sband->ht_info.ht_supported && | |
374 | (ht_add_ie = ieee80211_bss_get_ie(bss, WLAN_EID_HT_EXTRA_INFO))) { | |
375 | struct ieee80211_ht_addt_info *ht_add_info = | |
376 | (struct ieee80211_ht_addt_info *)ht_add_ie; | |
377 | u16 cap = sband->ht_info.cap; | |
378 | __le16 tmp; | |
379 | u32 flags = local->hw.conf.channel->flags; | |
380 | ||
381 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
382 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
383 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
384 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
385 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
386 | } | |
387 | break; | |
388 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
389 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
390 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
391 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
392 | } | |
393 | break; | |
394 | } | |
395 | ||
396 | tmp = cpu_to_le16(cap); | |
397 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); | |
398 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
399 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
400 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
401 | memcpy(pos, &tmp, sizeof(u16)); | |
402 | pos += sizeof(u16); | |
403 | /* TODO: needs a define here for << 2 */ | |
404 | *pos++ = sband->ht_info.ampdu_factor | | |
405 | (sband->ht_info.ampdu_density << 2); | |
406 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
407 | } | |
408 | ||
409 | kfree(ifsta->assocreq_ies); | |
410 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
411 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); | |
412 | if (ifsta->assocreq_ies) | |
413 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
414 | ||
415 | ieee80211_sta_tx(sdata, skb, 0); | |
416 | } | |
417 | ||
418 | ||
419 | static void ieee80211_send_deauth(struct ieee80211_sub_if_data *sdata, | |
420 | struct ieee80211_if_sta *ifsta, u16 reason) | |
421 | { | |
422 | struct ieee80211_local *local = sdata->local; | |
423 | struct sk_buff *skb; | |
424 | struct ieee80211_mgmt *mgmt; | |
425 | ||
426 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
427 | if (!skb) { | |
428 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
429 | "frame\n", sdata->dev->name); | |
430 | return; | |
431 | } | |
432 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
433 | ||
434 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
435 | memset(mgmt, 0, 24); | |
436 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
437 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
438 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
439 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
440 | IEEE80211_STYPE_DEAUTH); | |
441 | skb_put(skb, 2); | |
442 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
443 | ||
444 | ieee80211_sta_tx(sdata, skb, 0); | |
445 | } | |
446 | ||
447 | static void ieee80211_send_disassoc(struct ieee80211_sub_if_data *sdata, | |
448 | struct ieee80211_if_sta *ifsta, u16 reason) | |
449 | { | |
450 | struct ieee80211_local *local = sdata->local; | |
451 | struct sk_buff *skb; | |
452 | struct ieee80211_mgmt *mgmt; | |
453 | ||
454 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
455 | if (!skb) { | |
456 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
457 | "frame\n", sdata->dev->name); | |
458 | return; | |
459 | } | |
460 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
461 | ||
462 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
463 | memset(mgmt, 0, 24); | |
464 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
465 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
466 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
467 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
468 | IEEE80211_STYPE_DISASSOC); | |
469 | skb_put(skb, 2); | |
470 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
471 | ||
472 | ieee80211_sta_tx(sdata, skb, 0); | |
473 | } | |
474 | ||
475 | static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid, | |
476 | u8 dialog_token, u16 status, u16 policy, | |
477 | u16 buf_size, u16 timeout) | |
478 | { | |
479 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
480 | struct ieee80211_local *local = sdata->local; | |
481 | struct sk_buff *skb; | |
482 | struct ieee80211_mgmt *mgmt; | |
483 | u16 capab; | |
484 | ||
485 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); | |
486 | ||
487 | if (!skb) { | |
488 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
489 | "for addba resp frame\n", sdata->dev->name); | |
490 | return; | |
491 | } | |
492 | ||
493 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
494 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
495 | memset(mgmt, 0, 24); | |
496 | memcpy(mgmt->da, da, ETH_ALEN); | |
497 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); | |
498 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
499 | memcpy(mgmt->bssid, sdata->dev->dev_addr, ETH_ALEN); | |
500 | else | |
501 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
502 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
503 | IEEE80211_STYPE_ACTION); | |
504 | ||
505 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
506 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
507 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
508 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
509 | ||
510 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
511 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
512 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
513 | ||
514 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
515 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
516 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
517 | ||
518 | ieee80211_sta_tx(sdata, skb, 0); | |
519 | } | |
520 | ||
521 | static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata, | |
522 | struct ieee80211_msrment_ie *request_ie, | |
523 | const u8 *da, const u8 *bssid, | |
524 | u8 dialog_token) | |
525 | { | |
526 | struct ieee80211_local *local = sdata->local; | |
527 | struct sk_buff *skb; | |
528 | struct ieee80211_mgmt *msr_report; | |
529 | ||
530 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | |
531 | sizeof(struct ieee80211_msrment_ie)); | |
532 | ||
533 | if (!skb) { | |
534 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
535 | "measurement report frame\n", sdata->dev->name); | |
536 | return; | |
537 | } | |
538 | ||
539 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
540 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | |
541 | memset(msr_report, 0, 24); | |
542 | memcpy(msr_report->da, da, ETH_ALEN); | |
543 | memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN); | |
544 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | |
545 | msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
546 | IEEE80211_STYPE_ACTION); | |
547 | ||
548 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | |
549 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
550 | msr_report->u.action.u.measurement.action_code = | |
551 | WLAN_ACTION_SPCT_MSR_RPRT; | |
552 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | |
553 | ||
554 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | |
555 | msr_report->u.action.u.measurement.length = | |
556 | sizeof(struct ieee80211_msrment_ie); | |
557 | ||
558 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | |
559 | sizeof(struct ieee80211_msrment_ie)); | |
560 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | |
561 | msr_report->u.action.u.measurement.msr_elem.mode |= | |
562 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | |
563 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | |
564 | ||
565 | ieee80211_sta_tx(sdata, skb, 0); | |
566 | } | |
567 | ||
60f8b39c | 568 | /* MLME */ |
f698d856 | 569 | static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata, |
b079ada7 | 570 | struct ieee80211_sta_bss *bss) |
e2839d8f | 571 | { |
e2839d8f VK |
572 | struct ieee80211_local *local = sdata->local; |
573 | int i, have_higher_than_11mbit = 0; | |
574 | ||
575 | ||
576 | /* cf. IEEE 802.11 9.2.12 */ | |
577 | for (i = 0; i < bss->supp_rates_len; i++) | |
578 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
579 | have_higher_than_11mbit = 1; | |
580 | ||
581 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
582 | have_higher_than_11mbit) | |
583 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
584 | else | |
585 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
586 | ||
587 | ||
588 | if (local->ops->conf_tx) { | |
589 | struct ieee80211_tx_queue_params qparam; | |
e2839d8f VK |
590 | |
591 | memset(&qparam, 0, sizeof(qparam)); | |
592 | ||
593 | qparam.aifs = 2; | |
594 | ||
595 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
596 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
597 | qparam.cw_min = 31; | |
598 | else | |
599 | qparam.cw_min = 15; | |
600 | ||
601 | qparam.cw_max = 1023; | |
602 | qparam.txop = 0; | |
603 | ||
e100bb64 JB |
604 | for (i = 0; i < local_to_hw(local)->queues; i++) |
605 | local->ops->conf_tx(local_to_hw(local), i, &qparam); | |
e2839d8f VK |
606 | } |
607 | } | |
608 | ||
f698d856 | 609 | static void ieee80211_sta_wmm_params(struct ieee80211_local *local, |
f0706e82 JB |
610 | struct ieee80211_if_sta *ifsta, |
611 | u8 *wmm_param, size_t wmm_param_len) | |
612 | { | |
f0706e82 JB |
613 | struct ieee80211_tx_queue_params params; |
614 | size_t left; | |
615 | int count; | |
616 | u8 *pos; | |
617 | ||
3434fbd3 JB |
618 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
619 | return; | |
620 | ||
621 | if (!wmm_param) | |
622 | return; | |
623 | ||
f0706e82 JB |
624 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
625 | return; | |
626 | count = wmm_param[6] & 0x0f; | |
627 | if (count == ifsta->wmm_last_param_set) | |
628 | return; | |
629 | ifsta->wmm_last_param_set = count; | |
630 | ||
631 | pos = wmm_param + 8; | |
632 | left = wmm_param_len - 8; | |
633 | ||
634 | memset(¶ms, 0, sizeof(params)); | |
635 | ||
636 | if (!local->ops->conf_tx) | |
637 | return; | |
638 | ||
639 | local->wmm_acm = 0; | |
640 | for (; left >= 4; left -= 4, pos += 4) { | |
641 | int aci = (pos[0] >> 5) & 0x03; | |
642 | int acm = (pos[0] >> 4) & 0x01; | |
643 | int queue; | |
644 | ||
645 | switch (aci) { | |
646 | case 1: | |
e100bb64 | 647 | queue = 3; |
988c0f72 | 648 | if (acm) |
f0706e82 | 649 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
650 | break; |
651 | case 2: | |
e100bb64 | 652 | queue = 1; |
988c0f72 | 653 | if (acm) |
f0706e82 | 654 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
655 | break; |
656 | case 3: | |
e100bb64 | 657 | queue = 0; |
988c0f72 | 658 | if (acm) |
f0706e82 | 659 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
660 | break; |
661 | case 0: | |
662 | default: | |
e100bb64 | 663 | queue = 2; |
988c0f72 | 664 | if (acm) |
f0706e82 | 665 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
666 | break; |
667 | } | |
668 | ||
669 | params.aifs = pos[0] & 0x0f; | |
670 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
671 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 672 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 673 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 674 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 675 | "cWmin=%d cWmax=%d txop=%d\n", |
f698d856 | 676 | local->mdev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
677 | params.cw_max, params.txop); |
678 | #endif | |
f0706e82 JB |
679 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
680 | * AC for now) */ | |
681 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
682 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
f698d856 | 683 | "parameters for queue %d\n", local->mdev->name, queue); |
f0706e82 JB |
684 | } |
685 | } | |
686 | } | |
687 | ||
50c4afb9 JL |
688 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
689 | bool use_protection, | |
690 | bool use_short_preamble) | |
5628221c | 691 | { |
471b3efd | 692 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
ebd74487 | 693 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 694 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 695 | DECLARE_MAC_BUF(mac); |
ebd74487 | 696 | #endif |
471b3efd | 697 | u32 changed = 0; |
5628221c | 698 | |
471b3efd | 699 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 700 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c DD |
701 | if (net_ratelimit()) { |
702 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 703 | "%s)\n", |
471b3efd | 704 | sdata->dev->name, |
5628221c | 705 | use_protection ? "enabled" : "disabled", |
0795af57 | 706 | print_mac(mac, ifsta->bssid)); |
5628221c | 707 | } |
f4ea83dd | 708 | #endif |
471b3efd JB |
709 | bss_conf->use_cts_prot = use_protection; |
710 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 711 | } |
7e9ed188 | 712 | |
d43c7b37 | 713 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 714 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
715 | if (net_ratelimit()) { |
716 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 717 | " (BSSID=%s)\n", |
471b3efd | 718 | sdata->dev->name, |
d43c7b37 | 719 | use_short_preamble ? "short" : "long", |
0795af57 | 720 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 721 | } |
f4ea83dd | 722 | #endif |
d43c7b37 | 723 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 724 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 725 | } |
d9430a32 | 726 | |
471b3efd | 727 | return changed; |
5628221c DD |
728 | } |
729 | ||
50c4afb9 JL |
730 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
731 | u8 erp_value) | |
732 | { | |
733 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
734 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
735 | ||
736 | return ieee80211_handle_protect_preamb(sdata, | |
737 | use_protection, use_short_preamble); | |
738 | } | |
739 | ||
740 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
741 | struct ieee80211_sta_bss *bss) | |
742 | { | |
743 | u32 changed = 0; | |
744 | ||
745 | if (bss->has_erp_value) | |
746 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
747 | else { | |
748 | u16 capab = bss->capability; | |
749 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
750 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
751 | } | |
752 | ||
753 | return changed; | |
754 | } | |
755 | ||
f5e5bf25 TW |
756 | static void ieee80211_sta_send_apinfo(struct ieee80211_sub_if_data *sdata, |
757 | struct ieee80211_if_sta *ifsta) | |
758 | { | |
759 | union iwreq_data wrqu; | |
760 | memset(&wrqu, 0, sizeof(wrqu)); | |
761 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) | |
762 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
763 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
764 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); | |
765 | } | |
766 | ||
f698d856 | 767 | static void ieee80211_sta_send_associnfo(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
768 | struct ieee80211_if_sta *ifsta) |
769 | { | |
f0706e82 JB |
770 | union iwreq_data wrqu; |
771 | ||
f0706e82 | 772 | if (ifsta->assocreq_ies) { |
087d833e JM |
773 | memset(&wrqu, 0, sizeof(wrqu)); |
774 | wrqu.data.length = ifsta->assocreq_ies_len; | |
b171e19e | 775 | wireless_send_event(sdata->dev, IWEVASSOCREQIE, &wrqu, |
087d833e | 776 | ifsta->assocreq_ies); |
f0706e82 | 777 | } |
087d833e JM |
778 | if (ifsta->assocresp_ies) { |
779 | memset(&wrqu, 0, sizeof(wrqu)); | |
780 | wrqu.data.length = ifsta->assocresp_ies_len; | |
b171e19e | 781 | wireless_send_event(sdata->dev, IWEVASSOCRESPIE, &wrqu, |
087d833e | 782 | ifsta->assocresp_ies); |
f0706e82 | 783 | } |
f0706e82 JB |
784 | } |
785 | ||
786 | ||
f698d856 | 787 | static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, |
f5e5bf25 | 788 | struct ieee80211_if_sta *ifsta) |
f0706e82 | 789 | { |
471b3efd | 790 | struct ieee80211_local *local = sdata->local; |
38668c05 | 791 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
471b3efd | 792 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 793 | |
f5e5bf25 | 794 | struct ieee80211_sta_bss *bss; |
d6f2da5b | 795 | |
f5e5bf25 | 796 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; |
5628221c | 797 | |
f5e5bf25 TW |
798 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
799 | return; | |
21c0cbe7 | 800 | |
f5e5bf25 TW |
801 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
802 | conf->channel->center_freq, | |
803 | ifsta->ssid, ifsta->ssid_len); | |
804 | if (bss) { | |
805 | /* set timing information */ | |
806 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
807 | sdata->bss_conf.timestamp = bss->timestamp; | |
808 | sdata->bss_conf.dtim_period = bss->dtim_period; | |
21c0cbe7 | 809 | |
f5e5bf25 | 810 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
9ac19a90 JB |
811 | |
812 | ieee80211_rx_bss_put(local, bss); | |
f0706e82 JB |
813 | } |
814 | ||
9ac19a90 JB |
815 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
816 | changed |= BSS_CHANGED_HT; | |
817 | sdata->bss_conf.assoc_ht = 1; | |
818 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
819 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
f0706e82 | 820 | } |
3434fbd3 | 821 | |
9ac19a90 JB |
822 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
823 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); | |
824 | ieee80211_sta_send_associnfo(sdata, ifsta); | |
9306102e | 825 | |
9ac19a90 JB |
826 | ifsta->last_probe = jiffies; |
827 | ieee80211_led_assoc(local, 1); | |
9306102e | 828 | |
9ac19a90 JB |
829 | sdata->bss_conf.assoc = 1; |
830 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 | 831 | |
9ac19a90 JB |
832 | netif_tx_start_all_queues(sdata->dev); |
833 | netif_carrier_on(sdata->dev); | |
f0706e82 | 834 | |
9ac19a90 | 835 | ieee80211_sta_send_apinfo(sdata, ifsta); |
f0706e82 JB |
836 | } |
837 | ||
9ac19a90 JB |
838 | static void ieee80211_direct_probe(struct ieee80211_sub_if_data *sdata, |
839 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 840 | { |
9ac19a90 | 841 | DECLARE_MAC_BUF(mac); |
f0706e82 | 842 | |
9ac19a90 JB |
843 | ifsta->direct_probe_tries++; |
844 | if (ifsta->direct_probe_tries > IEEE80211_AUTH_MAX_TRIES) { | |
845 | printk(KERN_DEBUG "%s: direct probe to AP %s timed out\n", | |
846 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
847 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
848 | return; |
849 | } | |
f0706e82 | 850 | |
9ac19a90 JB |
851 | printk(KERN_DEBUG "%s: direct probe to AP %s try %d\n", |
852 | sdata->dev->name, print_mac(mac, ifsta->bssid), | |
853 | ifsta->direct_probe_tries); | |
f0706e82 | 854 | |
9ac19a90 | 855 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 | 856 | |
9ac19a90 JB |
857 | set_bit(IEEE80211_STA_REQ_DIRECT_PROBE, &ifsta->request); |
858 | ||
859 | /* Direct probe is sent to broadcast address as some APs | |
860 | * will not answer to direct packet in unassociated state. | |
861 | */ | |
862 | ieee80211_send_probe_req(sdata, NULL, | |
863 | ifsta->ssid, ifsta->ssid_len); | |
864 | ||
865 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
60f8b39c | 866 | } |
f0706e82 | 867 | |
9ac19a90 JB |
868 | |
869 | static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata, | |
870 | struct ieee80211_if_sta *ifsta) | |
f0706e82 | 871 | { |
9ac19a90 | 872 | DECLARE_MAC_BUF(mac); |
f0706e82 | 873 | |
9ac19a90 JB |
874 | ifsta->auth_tries++; |
875 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
876 | printk(KERN_DEBUG "%s: authentication with AP %s" | |
877 | " timed out\n", | |
878 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
879 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
f0706e82 JB |
880 | return; |
881 | } | |
f0706e82 | 882 | |
9ac19a90 JB |
883 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; |
884 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", | |
885 | sdata->dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 | 886 | |
9ac19a90 JB |
887 | ieee80211_send_auth(sdata, ifsta, 1, NULL, 0, 0); |
888 | ||
889 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
f0706e82 JB |
890 | } |
891 | ||
aa458d17 TW |
892 | static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, |
893 | struct ieee80211_if_sta *ifsta, bool deauth, | |
894 | bool self_disconnected, u16 reason) | |
895 | { | |
896 | struct ieee80211_local *local = sdata->local; | |
897 | struct sta_info *sta; | |
f5e5bf25 | 898 | u32 changed = BSS_CHANGED_ASSOC; |
aa458d17 TW |
899 | |
900 | rcu_read_lock(); | |
901 | ||
902 | sta = sta_info_get(local, ifsta->bssid); | |
903 | if (!sta) { | |
904 | rcu_read_unlock(); | |
905 | return; | |
906 | } | |
907 | ||
908 | if (deauth) { | |
909 | ifsta->direct_probe_tries = 0; | |
910 | ifsta->auth_tries = 0; | |
911 | } | |
912 | ifsta->assoc_scan_tries = 0; | |
913 | ifsta->assoc_tries = 0; | |
914 | ||
24e64622 | 915 | netif_tx_stop_all_queues(sdata->dev); |
aa458d17 TW |
916 | netif_carrier_off(sdata->dev); |
917 | ||
918 | ieee80211_sta_tear_down_BA_sessions(sdata, sta->addr); | |
919 | ||
920 | if (self_disconnected) { | |
921 | if (deauth) | |
922 | ieee80211_send_deauth(sdata, ifsta, reason); | |
923 | else | |
924 | ieee80211_send_disassoc(sdata, ifsta, reason); | |
925 | } | |
926 | ||
f5e5bf25 TW |
927 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
928 | changed |= ieee80211_reset_erp_info(sdata); | |
929 | ||
930 | if (sdata->bss_conf.assoc_ht) | |
931 | changed |= BSS_CHANGED_HT; | |
932 | ||
933 | sdata->bss_conf.assoc_ht = 0; | |
934 | sdata->bss_conf.ht_conf = NULL; | |
935 | sdata->bss_conf.ht_bss_conf = NULL; | |
936 | ||
937 | ieee80211_led_assoc(local, 0); | |
938 | sdata->bss_conf.assoc = 0; | |
939 | ||
940 | ieee80211_sta_send_apinfo(sdata, ifsta); | |
aa458d17 TW |
941 | |
942 | if (self_disconnected) | |
943 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
944 | ||
945 | sta_info_unlink(&sta); | |
946 | ||
947 | rcu_read_unlock(); | |
948 | ||
949 | sta_info_destroy(sta); | |
950 | } | |
f0706e82 | 951 | |
9ac19a90 JB |
952 | static int ieee80211_sta_wep_configured(struct ieee80211_sub_if_data *sdata) |
953 | { | |
954 | if (!sdata || !sdata->default_key || | |
955 | sdata->default_key->conf.alg != ALG_WEP) | |
956 | return 0; | |
957 | return 1; | |
958 | } | |
959 | ||
f698d856 | 960 | static int ieee80211_privacy_mismatch(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
961 | struct ieee80211_if_sta *ifsta) |
962 | { | |
f698d856 | 963 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 964 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
965 | int bss_privacy; |
966 | int wep_privacy; | |
967 | int privacy_invoked; | |
f0706e82 | 968 | |
5b98b1f7 | 969 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
970 | return 0; |
971 | ||
f698d856 | 972 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
8318d78a | 973 | local->hw.conf.channel->center_freq, |
cffdd30d | 974 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
975 | if (!bss) |
976 | return 0; | |
977 | ||
5b98b1f7 | 978 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
f698d856 | 979 | wep_privacy = !!ieee80211_sta_wep_configured(sdata); |
5b98b1f7 | 980 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); |
f0706e82 | 981 | |
3e122be0 | 982 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 983 | |
5b98b1f7 JB |
984 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
985 | return 0; | |
986 | ||
987 | return 1; | |
f0706e82 JB |
988 | } |
989 | ||
f698d856 | 990 | static void ieee80211_associate(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
991 | struct ieee80211_if_sta *ifsta) |
992 | { | |
0795af57 JP |
993 | DECLARE_MAC_BUF(mac); |
994 | ||
f0706e82 JB |
995 | ifsta->assoc_tries++; |
996 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 997 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 998 | " timed out\n", |
f698d856 | 999 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
48c2fc59 | 1000 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
1001 | return; |
1002 | } | |
1003 | ||
48c2fc59 | 1004 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; |
0795af57 | 1005 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
f698d856 JBG |
1006 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
1007 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
f0706e82 | 1008 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " |
f698d856 | 1009 | "mixed-cell disabled - abort association\n", sdata->dev->name); |
48c2fc59 | 1010 | ifsta->state = IEEE80211_STA_MLME_DISABLED; |
f0706e82 JB |
1011 | return; |
1012 | } | |
1013 | ||
f698d856 | 1014 | ieee80211_send_assoc(sdata, ifsta); |
f0706e82 JB |
1015 | |
1016 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
1017 | } | |
1018 | ||
1019 | ||
f698d856 | 1020 | static void ieee80211_associated(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1021 | struct ieee80211_if_sta *ifsta) |
1022 | { | |
f698d856 | 1023 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
1024 | struct sta_info *sta; |
1025 | int disassoc; | |
0795af57 | 1026 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1027 | |
1028 | /* TODO: start monitoring current AP signal quality and number of | |
1029 | * missed beacons. Scan other channels every now and then and search | |
1030 | * for better APs. */ | |
1031 | /* TODO: remove expired BSSes */ | |
1032 | ||
48c2fc59 | 1033 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATED; |
f0706e82 | 1034 | |
d0709a65 JB |
1035 | rcu_read_lock(); |
1036 | ||
f0706e82 JB |
1037 | sta = sta_info_get(local, ifsta->bssid); |
1038 | if (!sta) { | |
0795af57 | 1039 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
f698d856 | 1040 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
1041 | disassoc = 1; |
1042 | } else { | |
1043 | disassoc = 0; | |
1044 | if (time_after(jiffies, | |
1045 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 1046 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 1047 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 1048 | "current AP %s - assume out of " |
f0706e82 | 1049 | "range\n", |
f698d856 | 1050 | sdata->dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 1051 | disassoc = 1; |
d6f2da5b | 1052 | } else |
f698d856 | 1053 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
1054 | local->scan_ssid, |
1055 | local->scan_ssid_len); | |
d6f2da5b | 1056 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 1057 | } else { |
d6f2da5b | 1058 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
1059 | if (time_after(jiffies, ifsta->last_probe + |
1060 | IEEE80211_PROBE_INTERVAL)) { | |
1061 | ifsta->last_probe = jiffies; | |
f698d856 | 1062 | ieee80211_send_probe_req(sdata, ifsta->bssid, |
f0706e82 JB |
1063 | ifsta->ssid, |
1064 | ifsta->ssid_len); | |
1065 | } | |
1066 | } | |
f0706e82 | 1067 | } |
d0709a65 JB |
1068 | |
1069 | rcu_read_unlock(); | |
1070 | ||
60f8b39c JB |
1071 | if (disassoc) |
1072 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
1073 | WLAN_REASON_PREV_AUTH_NOT_VALID); | |
1074 | else | |
1075 | mod_timer(&ifsta->timer, jiffies + | |
1076 | IEEE80211_MONITORING_INTERVAL); | |
f0706e82 JB |
1077 | } |
1078 | ||
1079 | ||
f698d856 | 1080 | static void ieee80211_auth_completed(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1081 | struct ieee80211_if_sta *ifsta) |
1082 | { | |
f698d856 | 1083 | printk(KERN_DEBUG "%s: authenticated\n", sdata->dev->name); |
d6f2da5b | 1084 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f698d856 | 1085 | ieee80211_associate(sdata, ifsta); |
f0706e82 JB |
1086 | } |
1087 | ||
1088 | ||
f698d856 | 1089 | static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1090 | struct ieee80211_if_sta *ifsta, |
1091 | struct ieee80211_mgmt *mgmt, | |
1092 | size_t len) | |
1093 | { | |
1094 | u8 *pos; | |
1095 | struct ieee802_11_elems elems; | |
1096 | ||
f0706e82 | 1097 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1098 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1099 | if (!elems.challenge) |
f0706e82 | 1100 | return; |
f698d856 | 1101 | ieee80211_send_auth(sdata, ifsta, 3, elems.challenge - 2, |
f0706e82 JB |
1102 | elems.challenge_len + 2, 1); |
1103 | } | |
1104 | ||
60f8b39c JB |
1105 | /* |
1106 | * After accepting the AddBA Request we activated a timer, | |
1107 | * resetting it after each frame that arrives from the originator. | |
1108 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. | |
1109 | */ | |
1110 | static void sta_rx_agg_session_timer_expired(unsigned long data) | |
1111 | { | |
1112 | /* not an elegant detour, but there is no choice as the timer passes | |
1113 | * only one argument, and various sta_info are needed here, so init | |
1114 | * flow in sta_info_create gives the TID as data, while the timer_to_id | |
1115 | * array gives the sta through container_of */ | |
1116 | u8 *ptid = (u8 *)data; | |
1117 | u8 *timer_to_id = ptid - *ptid; | |
1118 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1119 | timer_to_tid[0]); | |
1120 | ||
1121 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1122 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); | |
1123 | #endif | |
1124 | ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->addr, | |
1125 | (u16)*ptid, WLAN_BACK_TIMER, | |
1126 | WLAN_REASON_QSTA_TIMEOUT); | |
1127 | } | |
1128 | ||
f698d856 | 1129 | static void ieee80211_sta_process_addba_request(struct ieee80211_local *local, |
9f985b0e RR |
1130 | struct ieee80211_mgmt *mgmt, |
1131 | size_t len) | |
1132 | { | |
07db2183 RR |
1133 | struct ieee80211_hw *hw = &local->hw; |
1134 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1135 | struct sta_info *sta; |
07db2183 RR |
1136 | struct tid_ampdu_rx *tid_agg_rx; |
1137 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1138 | u8 dialog_token; |
07db2183 RR |
1139 | int ret = -EOPNOTSUPP; |
1140 | DECLARE_MAC_BUF(mac); | |
9f985b0e | 1141 | |
d0709a65 JB |
1142 | rcu_read_lock(); |
1143 | ||
9f985b0e | 1144 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1145 | if (!sta) { |
1146 | rcu_read_unlock(); | |
9f985b0e | 1147 | return; |
d0709a65 | 1148 | } |
9f985b0e RR |
1149 | |
1150 | /* extract session parameters from addba request frame */ | |
1151 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1152 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1153 | start_seq_num = |
1154 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1155 | |
1156 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1157 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1158 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1159 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1160 | ||
9f985b0e RR |
1161 | status = WLAN_STATUS_REQUEST_DECLINED; |
1162 | ||
07db2183 RR |
1163 | /* sanity check for incoming parameters: |
1164 | * check if configuration can support the BA policy | |
1165 | * and if buffer size does not exceeds max value */ | |
1166 | if (((ba_policy != 1) | |
1167 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1168 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1169 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1170 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1171 | if (net_ratelimit()) | |
7b9d44cd | 1172 | printk(KERN_DEBUG "AddBA Req with bad params from " |
07db2183 RR |
1173 | "%s on tid %u. policy %d, buffer size %d\n", |
1174 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1175 | buf_size); | |
1176 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1177 | goto end_no_lock; | |
1178 | } | |
1179 | /* determine default buffer size */ | |
1180 | if (buf_size == 0) { | |
8318d78a JB |
1181 | struct ieee80211_supported_band *sband; |
1182 | ||
1183 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1184 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1185 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1186 | } |
1187 | ||
07db2183 RR |
1188 | |
1189 | /* examine state machine */ | |
07346f81 | 1190 | spin_lock_bh(&sta->lock); |
07db2183 | 1191 | |
cee24a3e | 1192 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
07db2183 RR |
1193 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1194 | if (net_ratelimit()) | |
7b9d44cd | 1195 | printk(KERN_DEBUG "unexpected AddBA Req from " |
07db2183 RR |
1196 | "%s on tid %u\n", |
1197 | print_mac(mac, mgmt->sa), tid); | |
1198 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1199 | goto end; | |
1200 | } | |
1201 | ||
cee24a3e RR |
1202 | /* prepare A-MPDU MLME for Rx aggregation */ |
1203 | sta->ampdu_mlme.tid_rx[tid] = | |
1204 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); | |
1205 | if (!sta->ampdu_mlme.tid_rx[tid]) { | |
f4ea83dd | 1206 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
1207 | if (net_ratelimit()) |
1208 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", | |
1209 | tid); | |
f4ea83dd | 1210 | #endif |
cee24a3e RR |
1211 | goto end; |
1212 | } | |
1213 | /* rx timer */ | |
1214 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = | |
1215 | sta_rx_agg_session_timer_expired; | |
1216 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = | |
1217 | (unsigned long)&sta->timer_to_tid[tid]; | |
1218 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); | |
1219 | ||
1220 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; | |
1221 | ||
07db2183 RR |
1222 | /* prepare reordering buffer */ |
1223 | tid_agg_rx->reorder_buf = | |
c97c23e3 | 1224 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
03147dfc | 1225 | if (!tid_agg_rx->reorder_buf) { |
f4ea83dd | 1226 | #ifdef CONFIG_MAC80211_HT_DEBUG |
03147dfc JB |
1227 | if (net_ratelimit()) |
1228 | printk(KERN_ERR "can not allocate reordering buffer " | |
1229 | "to tid %d\n", tid); | |
f4ea83dd | 1230 | #endif |
cee24a3e | 1231 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
07db2183 RR |
1232 | goto end; |
1233 | } | |
1234 | memset(tid_agg_rx->reorder_buf, 0, | |
c97c23e3 | 1235 | buf_size * sizeof(struct sk_buff *)); |
07db2183 RR |
1236 | |
1237 | if (local->ops->ampdu_action) | |
1238 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1239 | sta->addr, tid, &start_seq_num); |
07db2183 | 1240 | #ifdef CONFIG_MAC80211_HT_DEBUG |
513a1025 | 1241 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
07db2183 RR |
1242 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
1243 | ||
1244 | if (ret) { | |
1245 | kfree(tid_agg_rx->reorder_buf); | |
cee24a3e RR |
1246 | kfree(tid_agg_rx); |
1247 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
07db2183 RR |
1248 | goto end; |
1249 | } | |
1250 | ||
1251 | /* change state and send addba resp */ | |
cee24a3e | 1252 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
07db2183 RR |
1253 | tid_agg_rx->dialog_token = dialog_token; |
1254 | tid_agg_rx->ssn = start_seq_num; | |
1255 | tid_agg_rx->head_seq_num = start_seq_num; | |
1256 | tid_agg_rx->buf_size = buf_size; | |
1257 | tid_agg_rx->timeout = timeout; | |
1258 | tid_agg_rx->stored_mpdu_num = 0; | |
1259 | status = WLAN_STATUS_SUCCESS; | |
1260 | end: | |
07346f81 | 1261 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1262 | |
1263 | end_no_lock: | |
f698d856 | 1264 | ieee80211_send_addba_resp(sta->sdata, sta->addr, tid, |
d0709a65 JB |
1265 | dialog_token, status, 1, buf_size, timeout); |
1266 | rcu_read_unlock(); | |
9f985b0e | 1267 | } |
f0706e82 | 1268 | |
f698d856 | 1269 | static void ieee80211_sta_process_addba_resp(struct ieee80211_local *local, |
eadc8d9e RR |
1270 | struct ieee80211_mgmt *mgmt, |
1271 | size_t len) | |
1272 | { | |
eadc8d9e RR |
1273 | struct ieee80211_hw *hw = &local->hw; |
1274 | struct sta_info *sta; | |
1275 | u16 capab; | |
1276 | u16 tid; | |
1277 | u8 *state; | |
1278 | ||
d0709a65 JB |
1279 | rcu_read_lock(); |
1280 | ||
eadc8d9e | 1281 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1282 | if (!sta) { |
1283 | rcu_read_unlock(); | |
eadc8d9e | 1284 | return; |
d0709a65 | 1285 | } |
eadc8d9e RR |
1286 | |
1287 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1288 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1289 | ||
cee24a3e | 1290 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1291 | |
07346f81 | 1292 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1293 | |
cee24a3e | 1294 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1295 | spin_unlock_bh(&sta->lock); |
cee24a3e RR |
1296 | goto addba_resp_exit; |
1297 | } | |
1298 | ||
eadc8d9e | 1299 | if (mgmt->u.action.u.addba_resp.dialog_token != |
cee24a3e | 1300 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
07346f81 | 1301 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1302 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1303 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1304 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 1305 | goto addba_resp_exit; |
eadc8d9e RR |
1306 | } |
1307 | ||
cee24a3e | 1308 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e RR |
1309 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1310 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1311 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1312 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1313 | == WLAN_STATUS_SUCCESS) { | |
eadc8d9e | 1314 | *state |= HT_ADDBA_RECEIVED_MSK; |
cee24a3e | 1315 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
eadc8d9e | 1316 | |
f4ea83dd | 1317 | if (*state == HT_AGG_STATE_OPERATIONAL) |
eadc8d9e | 1318 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
eadc8d9e | 1319 | |
07346f81 | 1320 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 1321 | } else { |
cee24a3e | 1322 | sta->ampdu_mlme.addba_req_num[tid]++; |
eadc8d9e RR |
1323 | /* this will allow the state check in stop_BA_session */ |
1324 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1325 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1326 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
1327 | WLAN_BACK_INITIATOR); | |
1328 | } | |
cee24a3e RR |
1329 | |
1330 | addba_resp_exit: | |
d0709a65 | 1331 | rcu_read_unlock(); |
eadc8d9e RR |
1332 | } |
1333 | ||
f698d856 | 1334 | static void ieee80211_sta_process_delba(struct ieee80211_sub_if_data *sdata, |
688b88a4 RR |
1335 | struct ieee80211_mgmt *mgmt, size_t len) |
1336 | { | |
f698d856 | 1337 | struct ieee80211_local *local = sdata->local; |
688b88a4 RR |
1338 | struct sta_info *sta; |
1339 | u16 tid, params; | |
1340 | u16 initiator; | |
1341 | DECLARE_MAC_BUF(mac); | |
1342 | ||
d0709a65 JB |
1343 | rcu_read_lock(); |
1344 | ||
688b88a4 | 1345 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1346 | if (!sta) { |
1347 | rcu_read_unlock(); | |
688b88a4 | 1348 | return; |
d0709a65 | 1349 | } |
688b88a4 RR |
1350 | |
1351 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1352 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1353 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1354 | ||
1355 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1356 | if (net_ratelimit()) | |
d92684e6 RR |
1357 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1358 | print_mac(mac, mgmt->sa), | |
2e354ed7 | 1359 | initiator ? "initiator" : "recipient", tid, |
688b88a4 RR |
1360 | mgmt->u.action.u.delba.reason_code); |
1361 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1362 | ||
1363 | if (initiator == WLAN_BACK_INITIATOR) | |
f698d856 | 1364 | ieee80211_sta_stop_rx_ba_session(sdata, sta->addr, tid, |
688b88a4 | 1365 | WLAN_BACK_INITIATOR, 0); |
d92684e6 | 1366 | else { /* WLAN_BACK_RECIPIENT */ |
07346f81 | 1367 | spin_lock_bh(&sta->lock); |
cee24a3e | 1368 | sta->ampdu_mlme.tid_state_tx[tid] = |
d92684e6 | 1369 | HT_AGG_STATE_OPERATIONAL; |
07346f81 | 1370 | spin_unlock_bh(&sta->lock); |
d92684e6 RR |
1371 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
1372 | WLAN_BACK_RECIPIENT); | |
1373 | } | |
d0709a65 | 1374 | rcu_read_unlock(); |
688b88a4 RR |
1375 | } |
1376 | ||
f698d856 | 1377 | static void ieee80211_sta_process_measurement_req(struct ieee80211_sub_if_data *sdata, |
b6623486 AK |
1378 | struct ieee80211_mgmt *mgmt, |
1379 | size_t len) | |
1380 | { | |
1381 | /* | |
1382 | * Ignoring measurement request is spec violation. | |
1383 | * Mandatory measurements must be reported optional | |
1384 | * measurements might be refused or reported incapable | |
1385 | * For now just refuse | |
1386 | * TODO: Answer basic measurement as unmeasured | |
1387 | */ | |
f698d856 | 1388 | ieee80211_send_refuse_measurement_request(sdata, |
b6623486 AK |
1389 | &mgmt->u.action.u.measurement.msr_elem, |
1390 | mgmt->sa, mgmt->bssid, | |
1391 | mgmt->u.action.u.measurement.dialog_token); | |
1392 | } | |
1393 | ||
1394 | ||
f698d856 | 1395 | static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1396 | struct ieee80211_if_sta *ifsta, |
1397 | struct ieee80211_mgmt *mgmt, | |
1398 | size_t len) | |
1399 | { | |
f0706e82 | 1400 | u16 auth_alg, auth_transaction, status_code; |
0795af57 | 1401 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1402 | |
48c2fc59 | 1403 | if (ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && |
f4ea83dd | 1404 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
f0706e82 | 1405 | return; |
f0706e82 | 1406 | |
f4ea83dd | 1407 | if (len < 24 + 6) |
f0706e82 | 1408 | return; |
f0706e82 | 1409 | |
51fb61e7 | 1410 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1411 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1412 | return; |
f0706e82 | 1413 | |
51fb61e7 | 1414 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1415 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1416 | return; |
f0706e82 JB |
1417 | |
1418 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1419 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1420 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1421 | ||
51fb61e7 | 1422 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
1423 | /* |
1424 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
1425 | * networks and most implementations do not seem to use it. |
1426 | * However, try to reply to authentication attempts if someone | |
1427 | * has actually implemented this. | |
135a2110 | 1428 | */ |
f4ea83dd | 1429 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
f0706e82 | 1430 | return; |
f698d856 | 1431 | ieee80211_send_auth(sdata, ifsta, 2, NULL, 0, 0); |
f0706e82 JB |
1432 | } |
1433 | ||
1434 | if (auth_alg != ifsta->auth_alg || | |
f4ea83dd | 1435 | auth_transaction != ifsta->auth_transaction) |
f0706e82 | 1436 | return; |
f0706e82 JB |
1437 | |
1438 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1439 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1440 | u8 algs[3]; | |
1441 | const int num_algs = ARRAY_SIZE(algs); | |
1442 | int i, pos; | |
1443 | algs[0] = algs[1] = algs[2] = 0xff; | |
1444 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1445 | algs[0] = WLAN_AUTH_OPEN; | |
1446 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1447 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1448 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1449 | algs[2] = WLAN_AUTH_LEAP; | |
1450 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1451 | pos = 0; | |
1452 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1453 | pos = 1; | |
1454 | else | |
1455 | pos = 2; | |
1456 | for (i = 0; i < num_algs; i++) { | |
1457 | pos++; | |
1458 | if (pos >= num_algs) | |
1459 | pos = 0; | |
1460 | if (algs[pos] == ifsta->auth_alg || | |
1461 | algs[pos] == 0xff) | |
1462 | continue; | |
1463 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
f698d856 | 1464 | !ieee80211_sta_wep_configured(sdata)) |
f0706e82 JB |
1465 | continue; |
1466 | ifsta->auth_alg = algs[pos]; | |
f0706e82 JB |
1467 | break; |
1468 | } | |
1469 | } | |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | switch (ifsta->auth_alg) { | |
1474 | case WLAN_AUTH_OPEN: | |
1475 | case WLAN_AUTH_LEAP: | |
f698d856 | 1476 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 JB |
1477 | break; |
1478 | case WLAN_AUTH_SHARED_KEY: | |
1479 | if (ifsta->auth_transaction == 4) | |
f698d856 | 1480 | ieee80211_auth_completed(sdata, ifsta); |
f0706e82 | 1481 | else |
f698d856 | 1482 | ieee80211_auth_challenge(sdata, ifsta, mgmt, len); |
f0706e82 JB |
1483 | break; |
1484 | } | |
1485 | } | |
1486 | ||
1487 | ||
f698d856 | 1488 | static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1489 | struct ieee80211_if_sta *ifsta, |
1490 | struct ieee80211_mgmt *mgmt, | |
1491 | size_t len) | |
1492 | { | |
1493 | u16 reason_code; | |
0795af57 | 1494 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1495 | |
f4ea83dd | 1496 | if (len < 24 + 2) |
f0706e82 | 1497 | return; |
f0706e82 | 1498 | |
f4ea83dd | 1499 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1500 | return; |
f0706e82 JB |
1501 | |
1502 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1503 | ||
988c0f72 | 1504 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f698d856 | 1505 | printk(KERN_DEBUG "%s: deauthenticated\n", sdata->dev->name); |
f0706e82 | 1506 | |
48c2fc59 TW |
1507 | if (ifsta->state == IEEE80211_STA_MLME_AUTHENTICATE || |
1508 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATE || | |
1509 | ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { | |
9859b81e | 1510 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; |
f0706e82 JB |
1511 | mod_timer(&ifsta->timer, jiffies + |
1512 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1513 | } | |
1514 | ||
aa458d17 | 1515 | ieee80211_set_disassoc(sdata, ifsta, true, false, 0); |
d6f2da5b | 1516 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1517 | } |
1518 | ||
1519 | ||
f698d856 | 1520 | static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1521 | struct ieee80211_if_sta *ifsta, |
1522 | struct ieee80211_mgmt *mgmt, | |
1523 | size_t len) | |
1524 | { | |
1525 | u16 reason_code; | |
0795af57 | 1526 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1527 | |
f4ea83dd | 1528 | if (len < 24 + 2) |
f0706e82 | 1529 | return; |
f0706e82 | 1530 | |
f4ea83dd | 1531 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1532 | return; |
f0706e82 JB |
1533 | |
1534 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1535 | ||
d6f2da5b | 1536 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f698d856 | 1537 | printk(KERN_DEBUG "%s: disassociated\n", sdata->dev->name); |
f0706e82 | 1538 | |
48c2fc59 TW |
1539 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) { |
1540 | ifsta->state = IEEE80211_STA_MLME_ASSOCIATE; | |
f0706e82 JB |
1541 | mod_timer(&ifsta->timer, jiffies + |
1542 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1543 | } | |
1544 | ||
aa458d17 | 1545 | ieee80211_set_disassoc(sdata, ifsta, false, false, 0); |
f0706e82 JB |
1546 | } |
1547 | ||
1548 | ||
471b3efd | 1549 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1550 | struct ieee80211_if_sta *ifsta, |
1551 | struct ieee80211_mgmt *mgmt, | |
1552 | size_t len, | |
1553 | int reassoc) | |
1554 | { | |
471b3efd | 1555 | struct ieee80211_local *local = sdata->local; |
8318d78a | 1556 | struct ieee80211_supported_band *sband; |
f0706e82 | 1557 | struct sta_info *sta; |
8318d78a | 1558 | u64 rates, basic_rates; |
f0706e82 JB |
1559 | u16 capab_info, status_code, aid; |
1560 | struct ieee802_11_elems elems; | |
471b3efd | 1561 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1562 | u8 *pos; |
1563 | int i, j; | |
0795af57 | 1564 | DECLARE_MAC_BUF(mac); |
8318d78a | 1565 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1566 | |
1567 | /* AssocResp and ReassocResp have identical structure, so process both | |
1568 | * of them in this function. */ | |
1569 | ||
48c2fc59 | 1570 | if (ifsta->state != IEEE80211_STA_MLME_ASSOCIATE) |
f0706e82 | 1571 | return; |
f0706e82 | 1572 | |
f4ea83dd | 1573 | if (len < 24 + 6) |
f0706e82 | 1574 | return; |
f0706e82 | 1575 | |
f4ea83dd | 1576 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1577 | return; |
f0706e82 JB |
1578 | |
1579 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1580 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1581 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1582 | |
0795af57 | 1583 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1584 | "status=%d aid=%d)\n", |
f698d856 | 1585 | sdata->dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1586 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1587 | |
1588 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1589 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
f698d856 | 1590 | sdata->dev->name, status_code); |
8a69aa93 DD |
1591 | /* if this was a reassociation, ensure we try a "full" |
1592 | * association next time. This works around some broken APs | |
1593 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1594 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1595 | return; |
1596 | } | |
1597 | ||
1dd84aa2 JB |
1598 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1599 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
f698d856 | 1600 | "set\n", sdata->dev->name, aid); |
1dd84aa2 JB |
1601 | aid &= ~(BIT(15) | BIT(14)); |
1602 | ||
f0706e82 | 1603 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1604 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1605 | |
1606 | if (!elems.supp_rates) { | |
1607 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
f698d856 | 1608 | sdata->dev->name); |
f0706e82 JB |
1609 | return; |
1610 | } | |
1611 | ||
f698d856 | 1612 | printk(KERN_DEBUG "%s: associated\n", sdata->dev->name); |
f0706e82 JB |
1613 | ifsta->aid = aid; |
1614 | ifsta->ap_capab = capab_info; | |
1615 | ||
1616 | kfree(ifsta->assocresp_ies); | |
1617 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 1618 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
1619 | if (ifsta->assocresp_ies) |
1620 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
1621 | ||
d0709a65 JB |
1622 | rcu_read_lock(); |
1623 | ||
f0706e82 JB |
1624 | /* Add STA entry for the AP */ |
1625 | sta = sta_info_get(local, ifsta->bssid); | |
1626 | if (!sta) { | |
1627 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 1628 | int err; |
d0709a65 | 1629 | |
73651ee6 JB |
1630 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
1631 | if (!sta) { | |
1632 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
f698d856 | 1633 | " the AP\n", sdata->dev->name); |
d0709a65 | 1634 | rcu_read_unlock(); |
f0706e82 JB |
1635 | return; |
1636 | } | |
60f8b39c JB |
1637 | bss = ieee80211_rx_bss_get(local, ifsta->bssid, |
1638 | local->hw.conf.channel->center_freq, | |
1639 | ifsta->ssid, ifsta->ssid_len); | |
1640 | if (bss) { | |
1641 | sta->last_signal = bss->signal; | |
1642 | sta->last_qual = bss->qual; | |
1643 | sta->last_noise = bss->noise; | |
1644 | ieee80211_rx_bss_put(local, bss); | |
1645 | } | |
f709fc69 | 1646 | |
60f8b39c JB |
1647 | err = sta_info_insert(sta); |
1648 | if (err) { | |
1649 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
1650 | " the AP (error %d)\n", sdata->dev->name, err); | |
1651 | rcu_read_unlock(); | |
1652 | return; | |
f709fc69 | 1653 | } |
60f8b39c JB |
1654 | /* update new sta with its last rx activity */ |
1655 | sta->last_rx = jiffies; | |
f709fc69 | 1656 | } |
f709fc69 | 1657 | |
60f8b39c JB |
1658 | /* |
1659 | * FIXME: Do we really need to update the sta_info's information here? | |
1660 | * We already know about the AP (we found it in our list) so it | |
1661 | * should already be filled with the right info, no? | |
1662 | * As is stands, all this is racy because typically we assume | |
1663 | * the information that is filled in here (except flags) doesn't | |
1664 | * change while a STA structure is alive. As such, it should move | |
1665 | * to between the sta_info_alloc() and sta_info_insert() above. | |
1666 | */ | |
f709fc69 | 1667 | |
60f8b39c JB |
1668 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
1669 | WLAN_STA_AUTHORIZED); | |
05e5e883 | 1670 | |
60f8b39c JB |
1671 | rates = 0; |
1672 | basic_rates = 0; | |
1673 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
f709fc69 | 1674 | |
60f8b39c JB |
1675 | for (i = 0; i < elems.supp_rates_len; i++) { |
1676 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
f709fc69 | 1677 | |
60f8b39c JB |
1678 | if (rate > 110) |
1679 | have_higher_than_11mbit = true; | |
1680 | ||
1681 | for (j = 0; j < sband->n_bitrates; j++) { | |
1682 | if (sband->bitrates[j].bitrate == rate) | |
1683 | rates |= BIT(j); | |
1684 | if (elems.supp_rates[i] & 0x80) | |
1685 | basic_rates |= BIT(j); | |
f709fc69 | 1686 | } |
f709fc69 LCC |
1687 | } |
1688 | ||
60f8b39c JB |
1689 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1690 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
f0706e82 | 1691 | |
60f8b39c JB |
1692 | if (rate > 110) |
1693 | have_higher_than_11mbit = true; | |
f0706e82 | 1694 | |
60f8b39c JB |
1695 | for (j = 0; j < sband->n_bitrates; j++) { |
1696 | if (sband->bitrates[j].bitrate == rate) | |
1697 | rates |= BIT(j); | |
1698 | if (elems.ext_supp_rates[i] & 0x80) | |
1699 | basic_rates |= BIT(j); | |
1700 | } | |
1ebebea8 | 1701 | } |
f0706e82 | 1702 | |
60f8b39c JB |
1703 | sta->supp_rates[local->hw.conf.channel->band] = rates; |
1704 | sdata->basic_rates = basic_rates; | |
1705 | ||
1706 | /* cf. IEEE 802.11 9.2.12 */ | |
1707 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1708 | have_higher_than_11mbit) | |
1709 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1710 | else | |
1711 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1712 | |
60f8b39c JB |
1713 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
1714 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
1715 | struct ieee80211_ht_bss_info bss_info; | |
1716 | ieee80211_ht_cap_ie_to_ht_info( | |
1717 | (struct ieee80211_ht_cap *) | |
1718 | elems.ht_cap_elem, &sta->ht_info); | |
1719 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1720 | (struct ieee80211_ht_addt_info *) | |
1721 | elems.ht_info_elem, &bss_info); | |
1722 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); | |
1723 | } | |
f0706e82 | 1724 | |
60f8b39c | 1725 | rate_control_rate_init(sta, local); |
f0706e82 | 1726 | |
60f8b39c JB |
1727 | if (elems.wmm_param) { |
1728 | set_sta_flags(sta, WLAN_STA_WME); | |
1729 | rcu_read_unlock(); | |
1730 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, | |
1731 | elems.wmm_param_len); | |
1732 | } else | |
1733 | rcu_read_unlock(); | |
f0706e82 | 1734 | |
60f8b39c JB |
1735 | /* set AID and assoc capability, |
1736 | * ieee80211_set_associated() will tell the driver */ | |
1737 | bss_conf->aid = aid; | |
1738 | bss_conf->assoc_capability = capab_info; | |
1739 | ieee80211_set_associated(sdata, ifsta); | |
f0706e82 | 1740 | |
60f8b39c | 1741 | ieee80211_associated(sdata, ifsta); |
f0706e82 JB |
1742 | } |
1743 | ||
1744 | ||
f698d856 | 1745 | static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, |
a607268a BR |
1746 | struct ieee80211_if_sta *ifsta, |
1747 | struct ieee80211_sta_bss *bss) | |
1748 | { | |
f698d856 | 1749 | struct ieee80211_local *local = sdata->local; |
a607268a BR |
1750 | int res, rates, i, j; |
1751 | struct sk_buff *skb; | |
1752 | struct ieee80211_mgmt *mgmt; | |
a607268a | 1753 | u8 *pos; |
a607268a | 1754 | struct ieee80211_supported_band *sband; |
507b06d0 | 1755 | union iwreq_data wrqu; |
a607268a BR |
1756 | |
1757 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1758 | ||
1759 | /* Remove possible STA entries from other IBSS networks. */ | |
dc6676b7 | 1760 | sta_info_flush_delayed(sdata); |
a607268a BR |
1761 | |
1762 | if (local->ops->reset_tsf) { | |
1763 | /* Reset own TSF to allow time synchronization work. */ | |
1764 | local->ops->reset_tsf(local_to_hw(local)); | |
1765 | } | |
1766 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
9d139c81 | 1767 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
a607268a BR |
1768 | if (res) |
1769 | return res; | |
1770 | ||
1771 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
1772 | ||
a607268a BR |
1773 | sdata->drop_unencrypted = bss->capability & |
1774 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
1775 | ||
f698d856 | 1776 | res = ieee80211_set_freq(sdata, bss->freq); |
a607268a | 1777 | |
be038b37 AK |
1778 | if (res) |
1779 | return res; | |
a607268a | 1780 | |
9d139c81 | 1781 | /* Build IBSS probe response */ |
a607268a | 1782 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
9d139c81 | 1783 | if (skb) { |
a607268a BR |
1784 | skb_reserve(skb, local->hw.extra_tx_headroom); |
1785 | ||
1786 | mgmt = (struct ieee80211_mgmt *) | |
1787 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
1788 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
e7827a70 HH |
1789 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
1790 | IEEE80211_STYPE_PROBE_RESP); | |
a607268a | 1791 | memset(mgmt->da, 0xff, ETH_ALEN); |
f698d856 | 1792 | memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); |
a607268a BR |
1793 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); |
1794 | mgmt->u.beacon.beacon_int = | |
1795 | cpu_to_le16(local->hw.conf.beacon_int); | |
4faeb860 | 1796 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
a607268a BR |
1797 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
1798 | ||
1799 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
1800 | *pos++ = WLAN_EID_SSID; | |
1801 | *pos++ = ifsta->ssid_len; | |
1802 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
1803 | ||
1804 | rates = bss->supp_rates_len; | |
1805 | if (rates > 8) | |
1806 | rates = 8; | |
1807 | pos = skb_put(skb, 2 + rates); | |
1808 | *pos++ = WLAN_EID_SUPP_RATES; | |
1809 | *pos++ = rates; | |
1810 | memcpy(pos, bss->supp_rates, rates); | |
1811 | ||
1812 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
1813 | pos = skb_put(skb, 2 + 1); | |
1814 | *pos++ = WLAN_EID_DS_PARAMS; | |
1815 | *pos++ = 1; | |
1816 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
1817 | } | |
1818 | ||
1819 | pos = skb_put(skb, 2 + 2); | |
1820 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
1821 | *pos++ = 2; | |
1822 | /* FIX: set ATIM window based on scan results */ | |
1823 | *pos++ = 0; | |
1824 | *pos++ = 0; | |
1825 | ||
1826 | if (bss->supp_rates_len > 8) { | |
1827 | rates = bss->supp_rates_len - 8; | |
1828 | pos = skb_put(skb, 2 + rates); | |
1829 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
1830 | *pos++ = rates; | |
1831 | memcpy(pos, &bss->supp_rates[8], rates); | |
1832 | } | |
1833 | ||
9d139c81 | 1834 | ifsta->probe_resp = skb; |
e039fa4a | 1835 | |
9d139c81 JB |
1836 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
1837 | } | |
a607268a | 1838 | |
9d139c81 JB |
1839 | rates = 0; |
1840 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1841 | for (i = 0; i < bss->supp_rates_len; i++) { | |
1842 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
1843 | for (j = 0; j < sband->n_bitrates; j++) | |
1844 | if (sband->bitrates[j].bitrate == bitrate) | |
1845 | rates |= BIT(j); | |
a607268a | 1846 | } |
9d139c81 JB |
1847 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
1848 | ||
b079ada7 | 1849 | ieee80211_sta_def_wmm_params(sdata, bss); |
a607268a | 1850 | |
48c2fc59 | 1851 | ifsta->state = IEEE80211_STA_MLME_IBSS_JOINED; |
a607268a BR |
1852 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); |
1853 | ||
507b06d0 DW |
1854 | memset(&wrqu, 0, sizeof(wrqu)); |
1855 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
f698d856 | 1856 | wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL); |
a607268a BR |
1857 | |
1858 | return res; | |
1859 | } | |
1860 | ||
f709fc69 LCC |
1861 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
1862 | struct ieee802_11_elems *elems, | |
1863 | enum ieee80211_band band) | |
1864 | { | |
1865 | struct ieee80211_supported_band *sband; | |
1866 | struct ieee80211_rate *bitrates; | |
1867 | size_t num_rates; | |
1868 | u64 supp_rates; | |
1869 | int i, j; | |
1870 | sband = local->hw.wiphy->bands[band]; | |
1871 | ||
1872 | if (!sband) { | |
1873 | WARN_ON(1); | |
1874 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1875 | } | |
1876 | ||
1877 | bitrates = sband->bitrates; | |
1878 | num_rates = sband->n_bitrates; | |
1879 | supp_rates = 0; | |
1880 | for (i = 0; i < elems->supp_rates_len + | |
1881 | elems->ext_supp_rates_len; i++) { | |
1882 | u8 rate = 0; | |
1883 | int own_rate; | |
1884 | if (i < elems->supp_rates_len) | |
1885 | rate = elems->supp_rates[i]; | |
1886 | else if (elems->ext_supp_rates) | |
1887 | rate = elems->ext_supp_rates | |
1888 | [i - elems->supp_rates_len]; | |
1889 | own_rate = 5 * (rate & 0x7f); | |
1890 | for (j = 0; j < num_rates; j++) | |
1891 | if (bitrates[j].bitrate == own_rate) | |
1892 | supp_rates |= BIT(j); | |
1893 | } | |
1894 | return supp_rates; | |
1895 | } | |
1896 | ||
8e1535d5 EG |
1897 | static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local, |
1898 | enum ieee80211_band band) | |
1899 | { | |
1900 | struct ieee80211_supported_band *sband; | |
1901 | struct ieee80211_rate *bitrates; | |
1902 | u64 mandatory_rates; | |
1903 | enum ieee80211_rate_flags mandatory_flag; | |
1904 | int i; | |
1905 | ||
1906 | sband = local->hw.wiphy->bands[band]; | |
1907 | if (!sband) { | |
1908 | WARN_ON(1); | |
1909 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1910 | } | |
1911 | ||
1912 | if (band == IEEE80211_BAND_2GHZ) | |
1913 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | |
1914 | else | |
1915 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | |
1916 | ||
1917 | bitrates = sband->bitrates; | |
1918 | mandatory_rates = 0; | |
1919 | for (i = 0; i < sband->n_bitrates; i++) | |
1920 | if (bitrates[i].flags & mandatory_flag) | |
1921 | mandatory_rates |= BIT(i); | |
1922 | return mandatory_rates; | |
1923 | } | |
a607268a | 1924 | |
98c8fccf JB |
1925 | static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, |
1926 | struct ieee80211_mgmt *mgmt, | |
1927 | size_t len, | |
1928 | struct ieee80211_rx_status *rx_status, | |
1929 | struct ieee802_11_elems *elems, | |
1930 | bool beacon) | |
1931 | { | |
1932 | struct ieee80211_local *local = sdata->local; | |
1933 | int freq; | |
1934 | struct ieee80211_sta_bss *bss; | |
1935 | struct sta_info *sta; | |
1936 | struct ieee80211_channel *channel; | |
1937 | u64 beacon_timestamp, rx_timestamp; | |
1938 | u64 supp_rates = 0; | |
1939 | enum ieee80211_band band = rx_status->band; | |
1940 | DECLARE_MAC_BUF(mac); | |
1941 | DECLARE_MAC_BUF(mac2); | |
1942 | ||
1943 | if (elems->ds_params && elems->ds_params_len == 1) | |
1944 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
1945 | else | |
1946 | freq = rx_status->freq; | |
1947 | ||
1948 | channel = ieee80211_get_channel(local->hw.wiphy, freq); | |
1949 | ||
1950 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
1951 | return; | |
1952 | ||
1953 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && | |
1954 | elems->mesh_config && mesh_matches_local(elems, sdata)) { | |
1955 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1956 | ||
1957 | mesh_neighbour_update(mgmt->sa, supp_rates, sdata, | |
1958 | mesh_peer_accepts_plinks(elems)); | |
1959 | } | |
1960 | ||
1961 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && | |
1962 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { | |
1963 | supp_rates = ieee80211_sta_get_rates(local, elems, band); | |
1964 | ||
1965 | rcu_read_lock(); | |
1966 | ||
1967 | sta = sta_info_get(local, mgmt->sa); | |
1968 | if (sta) { | |
1969 | u64 prev_rates; | |
1970 | ||
1971 | prev_rates = sta->supp_rates[band]; | |
1972 | /* make sure mandatory rates are always added */ | |
1973 | sta->supp_rates[band] = supp_rates | | |
1974 | ieee80211_sta_get_mandatory_rates(local, band); | |
1975 | ||
1976 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
1977 | if (sta->supp_rates[band] != prev_rates) | |
1978 | printk(KERN_DEBUG "%s: updated supp_rates set " | |
1979 | "for %s based on beacon info (0x%llx | " | |
1980 | "0x%llx -> 0x%llx)\n", | |
1981 | sdata->dev->name, print_mac(mac, sta->addr), | |
1982 | (unsigned long long) prev_rates, | |
1983 | (unsigned long long) supp_rates, | |
1984 | (unsigned long long) sta->supp_rates[band]); | |
1985 | #endif | |
1986 | } else { | |
1987 | ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid, | |
1988 | mgmt->sa, supp_rates); | |
1989 | } | |
1990 | ||
1991 | rcu_read_unlock(); | |
1992 | } | |
1993 | ||
1994 | bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, | |
1995 | freq, beacon); | |
1996 | if (!bss) | |
1997 | return; | |
1998 | ||
1999 | /* was just updated in ieee80211_bss_info_update */ | |
2000 | beacon_timestamp = bss->timestamp; | |
2001 | ||
30b89b0f JB |
2002 | /* |
2003 | * In STA mode, the remaining parameters should not be overridden | |
2004 | * by beacons because they're not necessarily accurate there. | |
2005 | */ | |
2006 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
9859b81e | 2007 | bss->last_probe_resp && beacon) { |
3e122be0 | 2008 | ieee80211_rx_bss_put(local, bss); |
30b89b0f JB |
2009 | return; |
2010 | } | |
2011 | ||
9d9bf77d BR |
2012 | /* check if we need to merge IBSS */ |
2013 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
fba4a1e6 | 2014 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d | 2015 | bss->freq == local->oper_channel->center_freq && |
ae6a44e3 EK |
2016 | elems->ssid_len == sdata->u.sta.ssid_len && |
2017 | memcmp(elems->ssid, sdata->u.sta.ssid, | |
2018 | sdata->u.sta.ssid_len) == 0) { | |
9d9bf77d BR |
2019 | if (rx_status->flag & RX_FLAG_TSFT) { |
2020 | /* in order for correct IBSS merging we need mactime | |
2021 | * | |
2022 | * since mactime is defined as the time the first data | |
2023 | * symbol of the frame hits the PHY, and the timestamp | |
2024 | * of the beacon is defined as "the time that the data | |
2025 | * symbol containing the first bit of the timestamp is | |
2026 | * transmitted to the PHY plus the transmitting STA’s | |
2027 | * delays through its local PHY from the MAC-PHY | |
2028 | * interface to its interface with the WM" | |
2029 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2030 | * the receiver - we have to take into account the | |
2031 | * offset between the two. | |
2032 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2033 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2034 | */ | |
8e1535d5 | 2035 | int rate = local->hw.wiphy->bands[band]-> |
9d9bf77d BR |
2036 | bitrates[rx_status->rate_idx].bitrate; |
2037 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2038 | } else if (local && local->ops && local->ops->get_tsf) | |
2039 | /* second best option: get current TSF */ | |
2040 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2041 | else | |
2042 | /* can't merge without knowing the TSF */ | |
2043 | rx_timestamp = -1LLU; | |
2044 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2045 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2046 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2047 | print_mac(mac, mgmt->sa), | |
2048 | print_mac(mac2, mgmt->bssid), | |
2049 | (unsigned long long)rx_timestamp, | |
2050 | (unsigned long long)beacon_timestamp, | |
2051 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2052 | jiffies); | |
2053 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2054 | if (beacon_timestamp > rx_timestamp) { | |
576fdeae | 2055 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
f4ea83dd JB |
2056 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2057 | "local TSF - IBSS merge with BSSID %s\n", | |
f698d856 | 2058 | sdata->dev->name, print_mac(mac, mgmt->bssid)); |
fba4a1e6 | 2059 | #endif |
f698d856 JBG |
2060 | ieee80211_sta_join_ibss(sdata, &sdata->u.sta, bss); |
2061 | ieee80211_ibss_add_sta(sdata, NULL, | |
87291c02 | 2062 | mgmt->bssid, mgmt->sa, |
8e1535d5 | 2063 | supp_rates); |
9d9bf77d BR |
2064 | } |
2065 | } | |
2066 | ||
3e122be0 | 2067 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
2068 | } |
2069 | ||
2070 | ||
f698d856 | 2071 | static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2072 | struct ieee80211_mgmt *mgmt, |
2073 | size_t len, | |
2074 | struct ieee80211_rx_status *rx_status) | |
2075 | { | |
ae6a44e3 EK |
2076 | size_t baselen; |
2077 | struct ieee802_11_elems elems; | |
9859b81e | 2078 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
ae6a44e3 | 2079 | |
8e7cdbb6 TW |
2080 | if (memcmp(mgmt->da, sdata->dev->dev_addr, ETH_ALEN)) |
2081 | return; /* ignore ProbeResp to foreign address */ | |
2082 | ||
ae6a44e3 EK |
2083 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; |
2084 | if (baselen > len) | |
2085 | return; | |
2086 | ||
2087 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
2088 | &elems); | |
2089 | ||
98c8fccf | 2090 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); |
9859b81e RR |
2091 | |
2092 | /* direct probe may be part of the association flow */ | |
2093 | if (test_and_clear_bit(IEEE80211_STA_REQ_DIRECT_PROBE, | |
2094 | &ifsta->request)) { | |
2095 | printk(KERN_DEBUG "%s direct probe responded\n", | |
2096 | sdata->dev->name); | |
2097 | ieee80211_authenticate(sdata, ifsta); | |
2098 | } | |
f0706e82 JB |
2099 | } |
2100 | ||
2101 | ||
f698d856 | 2102 | static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2103 | struct ieee80211_mgmt *mgmt, |
2104 | size_t len, | |
2105 | struct ieee80211_rx_status *rx_status) | |
2106 | { | |
f0706e82 | 2107 | struct ieee80211_if_sta *ifsta; |
f0706e82 JB |
2108 | size_t baselen; |
2109 | struct ieee802_11_elems elems; | |
f698d856 | 2110 | struct ieee80211_local *local = sdata->local; |
d3c990fb | 2111 | struct ieee80211_conf *conf = &local->hw.conf; |
471b3efd | 2112 | u32 changed = 0; |
f0706e82 | 2113 | |
ae6a44e3 EK |
2114 | /* Process beacon from the current BSS */ |
2115 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2116 | if (baselen > len) | |
2117 | return; | |
2118 | ||
2119 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
2120 | ||
98c8fccf | 2121 | ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true); |
f0706e82 | 2122 | |
51fb61e7 | 2123 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2124 | return; |
2125 | ifsta = &sdata->u.sta; | |
2126 | ||
d6f2da5b | 2127 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
2128 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
2129 | return; | |
2130 | ||
fe3fa827 JB |
2131 | ieee80211_sta_wmm_params(local, ifsta, elems.wmm_param, |
2132 | elems.wmm_param_len); | |
2133 | ||
5628221c | 2134 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2135 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
2136 | else { |
2137 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
2138 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
2139 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
2140 | } | |
f0706e82 | 2141 | |
d3c990fb | 2142 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 2143 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
2144 | struct ieee80211_ht_bss_info bss_info; |
2145 | ||
2146 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2147 | (struct ieee80211_ht_addt_info *) | |
2148 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
2149 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
2150 | &bss_info); | |
d3c990fb RR |
2151 | } |
2152 | ||
471b3efd | 2153 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2154 | } |
2155 | ||
2156 | ||
f698d856 | 2157 | static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2158 | struct ieee80211_if_sta *ifsta, |
2159 | struct ieee80211_mgmt *mgmt, | |
2160 | size_t len, | |
2161 | struct ieee80211_rx_status *rx_status) | |
2162 | { | |
f698d856 | 2163 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2164 | int tx_last_beacon; |
2165 | struct sk_buff *skb; | |
2166 | struct ieee80211_mgmt *resp; | |
2167 | u8 *pos, *end; | |
0795af57 JP |
2168 | DECLARE_MAC_BUF(mac); |
2169 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2170 | DECLARE_MAC_BUF(mac2); | |
2171 | DECLARE_MAC_BUF(mac3); | |
2172 | #endif | |
f0706e82 | 2173 | |
51fb61e7 | 2174 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
48c2fc59 | 2175 | ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED || |
f0706e82 JB |
2176 | len < 24 + 2 || !ifsta->probe_resp) |
2177 | return; | |
2178 | ||
2179 | if (local->ops->tx_last_beacon) | |
2180 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2181 | else | |
2182 | tx_last_beacon = 1; | |
2183 | ||
2184 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2185 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2186 | "%s (tx_last_beacon=%d)\n", | |
f698d856 | 2187 | sdata->dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), |
0795af57 | 2188 | print_mac(mac3, mgmt->bssid), tx_last_beacon); |
f0706e82 JB |
2189 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2190 | ||
2191 | if (!tx_last_beacon) | |
2192 | return; | |
2193 | ||
2194 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
2195 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
2196 | return; | |
2197 | ||
2198 | end = ((u8 *) mgmt) + len; | |
2199 | pos = mgmt->u.probe_req.variable; | |
2200 | if (pos[0] != WLAN_EID_SSID || | |
2201 | pos + 2 + pos[1] > end) { | |
f4ea83dd JB |
2202 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2203 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
2204 | "from %s\n", | |
f698d856 | 2205 | sdata->dev->name, print_mac(mac, mgmt->sa)); |
f4ea83dd | 2206 | #endif |
f0706e82 JB |
2207 | return; |
2208 | } | |
2209 | if (pos[1] != 0 && | |
2210 | (pos[1] != ifsta->ssid_len || | |
2211 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
2212 | /* Ignore ProbeReq for foreign SSID */ | |
2213 | return; | |
2214 | } | |
2215 | ||
2216 | /* Reply with ProbeResp */ | |
0ec0b7ac | 2217 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
2218 | if (!skb) |
2219 | return; | |
2220 | ||
2221 | resp = (struct ieee80211_mgmt *) skb->data; | |
2222 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
2223 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 | 2224 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
f698d856 | 2225 | sdata->dev->name, print_mac(mac, resp->da)); |
f0706e82 | 2226 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
f698d856 | 2227 | ieee80211_sta_tx(sdata, skb, 0); |
f0706e82 JB |
2228 | } |
2229 | ||
f698d856 | 2230 | static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata, |
4e20cb29 JB |
2231 | struct ieee80211_if_sta *ifsta, |
2232 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
2233 | size_t len, |
2234 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 2235 | { |
f698d856 | 2236 | struct ieee80211_local *local = sdata->local; |
f709fc69 | 2237 | |
9c80d3dc JB |
2238 | /* all categories we currently handle have action_code */ |
2239 | if (len < IEEE80211_MIN_ACTION_SIZE + 1) | |
9f985b0e RR |
2240 | return; |
2241 | ||
2242 | switch (mgmt->u.action.category) { | |
b6623486 AK |
2243 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
2244 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) | |
2245 | break; | |
5fd12d4d | 2246 | switch (mgmt->u.action.u.measurement.action_code) { |
b6623486 AK |
2247 | case WLAN_ACTION_SPCT_MSR_REQ: |
2248 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2249 | sizeof(mgmt->u.action.u.measurement))) | |
2250 | break; | |
f698d856 | 2251 | ieee80211_sta_process_measurement_req(sdata, mgmt, len); |
b6623486 AK |
2252 | break; |
2253 | } | |
2254 | break; | |
9f985b0e RR |
2255 | case WLAN_CATEGORY_BACK: |
2256 | switch (mgmt->u.action.u.addba_req.action_code) { | |
2257 | case WLAN_ACTION_ADDBA_REQ: | |
2258 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2259 | sizeof(mgmt->u.action.u.addba_req))) | |
2260 | break; | |
f698d856 | 2261 | ieee80211_sta_process_addba_request(local, mgmt, len); |
9f985b0e | 2262 | break; |
eadc8d9e RR |
2263 | case WLAN_ACTION_ADDBA_RESP: |
2264 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2265 | sizeof(mgmt->u.action.u.addba_resp))) | |
2266 | break; | |
f698d856 | 2267 | ieee80211_sta_process_addba_resp(local, mgmt, len); |
eadc8d9e | 2268 | break; |
688b88a4 RR |
2269 | case WLAN_ACTION_DELBA: |
2270 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2271 | sizeof(mgmt->u.action.u.delba))) | |
2272 | break; | |
f698d856 | 2273 | ieee80211_sta_process_delba(sdata, mgmt, len); |
688b88a4 | 2274 | break; |
9f985b0e RR |
2275 | } |
2276 | break; | |
f709fc69 | 2277 | case PLINK_CATEGORY: |
902acc78 | 2278 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 | 2279 | mesh_rx_plink_frame(sdata, mgmt, len, rx_status); |
f709fc69 | 2280 | break; |
f709fc69 | 2281 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 2282 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f698d856 | 2283 | mesh_rx_path_sel_frame(sdata, mgmt, len); |
f709fc69 | 2284 | break; |
9f985b0e RR |
2285 | } |
2286 | } | |
f0706e82 | 2287 | |
f698d856 | 2288 | void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, |
f0706e82 JB |
2289 | struct ieee80211_rx_status *rx_status) |
2290 | { | |
f698d856 | 2291 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2292 | struct ieee80211_if_sta *ifsta; |
2293 | struct ieee80211_mgmt *mgmt; | |
2294 | u16 fc; | |
2295 | ||
2296 | if (skb->len < 24) | |
2297 | goto fail; | |
2298 | ||
f0706e82 JB |
2299 | ifsta = &sdata->u.sta; |
2300 | ||
2301 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2302 | fc = le16_to_cpu(mgmt->frame_control); | |
2303 | ||
2304 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2305 | case IEEE80211_STYPE_PROBE_REQ: | |
2306 | case IEEE80211_STYPE_PROBE_RESP: | |
2307 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 2308 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
2309 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
2310 | case IEEE80211_STYPE_AUTH: | |
2311 | case IEEE80211_STYPE_ASSOC_RESP: | |
2312 | case IEEE80211_STYPE_REASSOC_RESP: | |
2313 | case IEEE80211_STYPE_DEAUTH: | |
2314 | case IEEE80211_STYPE_DISASSOC: | |
2315 | skb_queue_tail(&ifsta->skb_queue, skb); | |
2316 | queue_work(local->hw.workqueue, &ifsta->work); | |
2317 | return; | |
f0706e82 JB |
2318 | } |
2319 | ||
2320 | fail: | |
2321 | kfree_skb(skb); | |
2322 | } | |
2323 | ||
f698d856 | 2324 | static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2325 | struct sk_buff *skb) |
2326 | { | |
2327 | struct ieee80211_rx_status *rx_status; | |
f0706e82 JB |
2328 | struct ieee80211_if_sta *ifsta; |
2329 | struct ieee80211_mgmt *mgmt; | |
2330 | u16 fc; | |
2331 | ||
f0706e82 JB |
2332 | ifsta = &sdata->u.sta; |
2333 | ||
2334 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
2335 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2336 | fc = le16_to_cpu(mgmt->frame_control); | |
2337 | ||
2338 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2339 | case IEEE80211_STYPE_PROBE_REQ: | |
f698d856 | 2340 | ieee80211_rx_mgmt_probe_req(sdata, ifsta, mgmt, skb->len, |
f0706e82 JB |
2341 | rx_status); |
2342 | break; | |
2343 | case IEEE80211_STYPE_PROBE_RESP: | |
f698d856 | 2344 | ieee80211_rx_mgmt_probe_resp(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
2345 | break; |
2346 | case IEEE80211_STYPE_BEACON: | |
f698d856 | 2347 | ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status); |
f0706e82 JB |
2348 | break; |
2349 | case IEEE80211_STYPE_AUTH: | |
f698d856 | 2350 | ieee80211_rx_mgmt_auth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
2351 | break; |
2352 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 2353 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
2354 | break; |
2355 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 2356 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
2357 | break; |
2358 | case IEEE80211_STYPE_DEAUTH: | |
f698d856 | 2359 | ieee80211_rx_mgmt_deauth(sdata, ifsta, mgmt, skb->len); |
f0706e82 JB |
2360 | break; |
2361 | case IEEE80211_STYPE_DISASSOC: | |
f698d856 | 2362 | ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len); |
f0706e82 | 2363 | break; |
9f985b0e | 2364 | case IEEE80211_STYPE_ACTION: |
f698d856 | 2365 | ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 2366 | break; |
f0706e82 JB |
2367 | } |
2368 | ||
2369 | kfree_skb(skb); | |
2370 | } | |
2371 | ||
2372 | ||
f698d856 | 2373 | static int ieee80211_sta_active_ibss(struct ieee80211_sub_if_data *sdata) |
f0706e82 | 2374 | { |
f698d856 | 2375 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2376 | int active = 0; |
2377 | struct sta_info *sta; | |
2378 | ||
d0709a65 JB |
2379 | rcu_read_lock(); |
2380 | ||
2381 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
2382 | if (sta->sdata == sdata && | |
f0706e82 JB |
2383 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
2384 | jiffies)) { | |
2385 | active++; | |
2386 | break; | |
2387 | } | |
2388 | } | |
d0709a65 JB |
2389 | |
2390 | rcu_read_unlock(); | |
f0706e82 JB |
2391 | |
2392 | return active; | |
2393 | } | |
2394 | ||
2395 | ||
f698d856 | 2396 | static void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata, unsigned long exp_time) |
f0706e82 | 2397 | { |
f698d856 | 2398 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2399 | struct sta_info *sta, *tmp; |
be8755e1 | 2400 | LIST_HEAD(tmp_list); |
0795af57 | 2401 | DECLARE_MAC_BUF(mac); |
d0709a65 | 2402 | unsigned long flags; |
f0706e82 | 2403 | |
d0709a65 | 2404 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 2405 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 2406 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
f4ea83dd | 2407 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
0795af57 | 2408 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
f698d856 | 2409 | sdata->dev->name, print_mac(mac, sta->addr)); |
f4ea83dd | 2410 | #endif |
cb585bcc | 2411 | __sta_info_unlink(&sta); |
d0709a65 JB |
2412 | if (sta) |
2413 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 2414 | } |
d0709a65 | 2415 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 2416 | |
d0709a65 JB |
2417 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
2418 | sta_info_destroy(sta); | |
f0706e82 JB |
2419 | } |
2420 | ||
2421 | ||
f698d856 | 2422 | static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2423 | struct ieee80211_if_sta *ifsta) |
2424 | { | |
2425 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2426 | ||
f698d856 JBG |
2427 | ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT); |
2428 | if (ieee80211_sta_active_ibss(sdata)) | |
f0706e82 JB |
2429 | return; |
2430 | ||
2431 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
f698d856 JBG |
2432 | "IBSS networks with same SSID (merge)\n", sdata->dev->name); |
2433 | ieee80211_sta_req_scan(sdata, ifsta->ssid, ifsta->ssid_len); | |
f0706e82 JB |
2434 | } |
2435 | ||
2436 | ||
f709fc69 | 2437 | #ifdef CONFIG_MAC80211_MESH |
f698d856 | 2438 | static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata, |
f709fc69 LCC |
2439 | struct ieee80211_if_sta *ifsta) |
2440 | { | |
f709fc69 LCC |
2441 | bool free_plinks; |
2442 | ||
f698d856 JBG |
2443 | ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); |
2444 | mesh_path_expire(sdata); | |
f709fc69 LCC |
2445 | |
2446 | free_plinks = mesh_plink_availables(sdata); | |
2447 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
9d139c81 | 2448 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
2449 | |
2450 | mod_timer(&ifsta->timer, jiffies + | |
2451 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
2452 | } | |
2453 | ||
2454 | ||
f698d856 | 2455 | void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) |
f709fc69 LCC |
2456 | { |
2457 | struct ieee80211_if_sta *ifsta; | |
f709fc69 | 2458 | ifsta = &sdata->u.sta; |
48c2fc59 | 2459 | ifsta->state = IEEE80211_STA_MLME_MESH_UP; |
f709fc69 | 2460 | ieee80211_sta_timer((unsigned long)sdata); |
56a6d13d | 2461 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
2462 | } |
2463 | #endif | |
2464 | ||
2465 | ||
f0706e82 JB |
2466 | void ieee80211_sta_timer(unsigned long data) |
2467 | { | |
60f8b39c JB |
2468 | struct ieee80211_sub_if_data *sdata = |
2469 | (struct ieee80211_sub_if_data *) data; | |
2470 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
2471 | struct ieee80211_local *local = sdata->local; | |
f0706e82 | 2472 | |
60f8b39c JB |
2473 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); |
2474 | queue_work(local->hw.workqueue, &ifsta->work); | |
f0706e82 JB |
2475 | } |
2476 | ||
f698d856 | 2477 | static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2478 | struct ieee80211_if_sta *ifsta) |
2479 | { | |
f698d856 | 2480 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2481 | |
2482 | if (local->ops->reset_tsf) { | |
2483 | /* Reset own TSF to allow time synchronization work. */ | |
2484 | local->ops->reset_tsf(local_to_hw(local)); | |
2485 | } | |
2486 | ||
2487 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
2488 | ||
2489 | ||
2490 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
2491 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2492 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2493 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2494 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2495 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
2496 | else | |
2497 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
f0706e82 | 2498 | ifsta->auth_transaction = -1; |
d6f2da5b | 2499 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
6042a3e3 | 2500 | ifsta->assoc_scan_tries = 0; |
9859b81e | 2501 | ifsta->direct_probe_tries = 0; |
6042a3e3 RR |
2502 | ifsta->auth_tries = 0; |
2503 | ifsta->assoc_tries = 0; | |
24e64622 | 2504 | netif_tx_stop_all_queues(sdata->dev); |
f698d856 | 2505 | netif_carrier_off(sdata->dev); |
f0706e82 JB |
2506 | } |
2507 | ||
2508 | ||
f698d856 | 2509 | void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2510 | struct ieee80211_if_sta *ifsta) |
2511 | { | |
f698d856 | 2512 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2513 | |
51fb61e7 | 2514 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2515 | return; |
2516 | ||
d6f2da5b | 2517 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3b7ee69d | 2518 | IEEE80211_STA_AUTO_BSSID_SEL)) && |
d6f2da5b | 2519 | (ifsta->flags & (IEEE80211_STA_SSID_SET | |
3b7ee69d TW |
2520 | IEEE80211_STA_AUTO_SSID_SEL))) { |
2521 | ||
2522 | if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED) | |
2523 | ieee80211_set_disassoc(sdata, ifsta, true, true, | |
2524 | WLAN_REASON_DEAUTH_LEAVING); | |
2525 | ||
f0706e82 JB |
2526 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
2527 | queue_work(local->hw.workqueue, &ifsta->work); | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
2532 | const char *ssid, int ssid_len) | |
2533 | { | |
2534 | int tmp, hidden_ssid; | |
2535 | ||
48225709 MW |
2536 | if (ssid_len == ifsta->ssid_len && |
2537 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
2538 | return 1; |
2539 | ||
d6f2da5b | 2540 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
2541 | return 0; |
2542 | ||
2543 | hidden_ssid = 1; | |
2544 | tmp = ssid_len; | |
2545 | while (tmp--) { | |
2546 | if (ssid[tmp] != '\0') { | |
2547 | hidden_ssid = 0; | |
2548 | break; | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
2553 | return 1; | |
2554 | ||
2555 | if (ssid_len == 1 && ssid[0] == ' ') | |
2556 | return 1; | |
2557 | ||
2558 | return 0; | |
2559 | } | |
2560 | ||
f698d856 | 2561 | static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2562 | struct ieee80211_if_sta *ifsta) |
2563 | { | |
f698d856 | 2564 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2565 | struct ieee80211_sta_bss *bss; |
8318d78a | 2566 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
2567 | u8 bssid[ETH_ALEN], *pos; |
2568 | int i; | |
167ad6f7 | 2569 | int ret; |
0795af57 | 2570 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
2571 | |
2572 | #if 0 | |
2573 | /* Easier testing, use fixed BSSID. */ | |
2574 | memset(bssid, 0xfe, ETH_ALEN); | |
2575 | #else | |
2576 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
2577 | * own MAC address to make sure that devices that do not have proper | |
2578 | * random number generator get different BSSID. */ | |
2579 | get_random_bytes(bssid, ETH_ALEN); | |
2580 | for (i = 0; i < ETH_ALEN; i++) | |
f698d856 | 2581 | bssid[i] ^= sdata->dev->dev_addr[i]; |
f0706e82 JB |
2582 | bssid[0] &= ~0x01; |
2583 | bssid[0] |= 0x02; | |
2584 | #endif | |
2585 | ||
0795af57 | 2586 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
f698d856 | 2587 | sdata->dev->name, print_mac(mac, bssid)); |
f0706e82 | 2588 | |
98c8fccf | 2589 | bss = ieee80211_rx_bss_add(local, bssid, |
8318d78a | 2590 | local->hw.conf.channel->center_freq, |
cffdd30d | 2591 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
2592 | if (!bss) |
2593 | return -ENOMEM; | |
2594 | ||
8318d78a JB |
2595 | bss->band = local->hw.conf.channel->band; |
2596 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
2597 | |
2598 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 2599 | local->hw.conf.beacon_int = 100; |
f0706e82 | 2600 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
2601 | bss->last_update = jiffies; |
2602 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
2603 | |
2604 | if (sdata->default_key) | |
f0706e82 | 2605 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 2606 | else |
f0706e82 | 2607 | sdata->drop_unencrypted = 0; |
988c0f72 | 2608 | |
8318d78a | 2609 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 2610 | pos = bss->supp_rates; |
8318d78a JB |
2611 | for (i = 0; i < sband->n_bitrates; i++) { |
2612 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
2613 | *pos++ = (u8) (rate / 5); |
2614 | } | |
2615 | ||
f698d856 | 2616 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); |
3e122be0 | 2617 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2618 | return ret; |
f0706e82 JB |
2619 | } |
2620 | ||
2621 | ||
f698d856 | 2622 | static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2623 | struct ieee80211_if_sta *ifsta) |
2624 | { | |
f698d856 | 2625 | struct ieee80211_local *local = sdata->local; |
f0706e82 JB |
2626 | struct ieee80211_sta_bss *bss; |
2627 | int found = 0; | |
2628 | u8 bssid[ETH_ALEN]; | |
2629 | int active_ibss; | |
0795af57 JP |
2630 | DECLARE_MAC_BUF(mac); |
2631 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2632 | |
2633 | if (ifsta->ssid_len == 0) | |
2634 | return -EINVAL; | |
2635 | ||
f698d856 | 2636 | active_ibss = ieee80211_sta_active_ibss(sdata); |
f0706e82 JB |
2637 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2638 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
f698d856 | 2639 | sdata->dev->name, active_ibss); |
f0706e82 JB |
2640 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2641 | spin_lock_bh(&local->sta_bss_lock); | |
2642 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2643 | if (ifsta->ssid_len != bss->ssid_len || | |
2644 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
2645 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
2646 | continue; | |
2647 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2648 | printk(KERN_DEBUG " bssid=%s found\n", |
2649 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
2650 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2651 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
2652 | found = 1; | |
2653 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
2654 | break; | |
2655 | } | |
2656 | spin_unlock_bh(&local->sta_bss_lock); | |
2657 | ||
2658 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
6e43829b VK |
2659 | if (found) |
2660 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " | |
2661 | "%s\n", print_mac(mac, bssid), | |
2662 | print_mac(mac2, ifsta->bssid)); | |
f0706e82 | 2663 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
80693ceb DD |
2664 | |
2665 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
167ad6f7 | 2666 | int ret; |
80693ceb DD |
2667 | int search_freq; |
2668 | ||
2669 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) | |
2670 | search_freq = bss->freq; | |
2671 | else | |
2672 | search_freq = local->hw.conf.channel->center_freq; | |
2673 | ||
f698d856 | 2674 | bss = ieee80211_rx_bss_get(local, bssid, search_freq, |
80693ceb DD |
2675 | ifsta->ssid, ifsta->ssid_len); |
2676 | if (!bss) | |
2677 | goto dont_join; | |
2678 | ||
0795af57 | 2679 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 2680 | " based on configured SSID\n", |
f698d856 JBG |
2681 | sdata->dev->name, print_mac(mac, bssid)); |
2682 | ret = ieee80211_sta_join_ibss(sdata, ifsta, bss); | |
3e122be0 | 2683 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 2684 | return ret; |
f0706e82 | 2685 | } |
80693ceb DD |
2686 | |
2687 | dont_join: | |
f0706e82 JB |
2688 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
2689 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
2690 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2691 | ||
2692 | /* Selected IBSS not found in current scan results - try to scan */ | |
48c2fc59 | 2693 | if (ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED && |
f698d856 | 2694 | !ieee80211_sta_active_ibss(sdata)) { |
f0706e82 JB |
2695 | mod_timer(&ifsta->timer, jiffies + |
2696 | IEEE80211_IBSS_MERGE_INTERVAL); | |
2697 | } else if (time_after(jiffies, local->last_scan_completed + | |
2698 | IEEE80211_SCAN_INTERVAL)) { | |
2699 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
f698d856 JBG |
2700 | "join\n", sdata->dev->name); |
2701 | return ieee80211_sta_req_scan(sdata, ifsta->ssid, | |
f0706e82 | 2702 | ifsta->ssid_len); |
48c2fc59 | 2703 | } else if (ifsta->state != IEEE80211_STA_MLME_IBSS_JOINED) { |
f0706e82 JB |
2704 | int interval = IEEE80211_SCAN_INTERVAL; |
2705 | ||
2706 | if (time_after(jiffies, ifsta->ibss_join_req + | |
2707 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 2708 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
2709 | (!(local->oper_channel->flags & |
2710 | IEEE80211_CHAN_NO_IBSS))) | |
f698d856 | 2711 | return ieee80211_sta_create_ibss(sdata, ifsta); |
d6f2da5b | 2712 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a | 2713 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
f698d856 | 2714 | " %d MHz\n", sdata->dev->name, |
8318d78a | 2715 | local->hw.conf.channel->center_freq); |
f0706e82 JB |
2716 | } |
2717 | ||
2718 | /* No IBSS found - decrease scan interval and continue | |
2719 | * scanning. */ | |
2720 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
2721 | } | |
2722 | ||
48c2fc59 | 2723 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f0706e82 JB |
2724 | mod_timer(&ifsta->timer, jiffies + interval); |
2725 | return 0; | |
2726 | } | |
2727 | ||
2728 | return 0; | |
2729 | } | |
2730 | ||
2731 | ||
f698d856 | 2732 | int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len) |
f0706e82 | 2733 | { |
f0706e82 | 2734 | struct ieee80211_if_sta *ifsta; |
9d139c81 | 2735 | int res; |
f0706e82 JB |
2736 | |
2737 | if (len > IEEE80211_MAX_SSID_LEN) | |
2738 | return -EINVAL; | |
2739 | ||
f0706e82 JB |
2740 | ifsta = &sdata->u.sta; |
2741 | ||
9d139c81 JB |
2742 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
2743 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); | |
2744 | memcpy(ifsta->ssid, ssid, len); | |
2745 | ifsta->ssid_len = len; | |
d6f2da5b | 2746 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
9d139c81 JB |
2747 | |
2748 | res = 0; | |
2749 | /* | |
2750 | * Hack! MLME code needs to be cleaned up to have different | |
2751 | * entry points for configuration and internal selection change | |
2752 | */ | |
2753 | if (netif_running(sdata->dev)) | |
2754 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); | |
2755 | if (res) { | |
2756 | printk(KERN_DEBUG "%s: Failed to config new SSID to " | |
f698d856 | 2757 | "the low-level driver\n", sdata->dev->name); |
9d139c81 JB |
2758 | return res; |
2759 | } | |
2760 | } | |
f0706e82 | 2761 | |
d6f2da5b JS |
2762 | if (len) |
2763 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
2764 | else | |
2765 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
9d139c81 | 2766 | |
51fb61e7 | 2767 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 2768 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 | 2769 | ifsta->ibss_join_req = jiffies; |
48c2fc59 | 2770 | ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH; |
f698d856 | 2771 | return ieee80211_sta_find_ibss(sdata, ifsta); |
f0706e82 | 2772 | } |
9d139c81 | 2773 | |
f0706e82 JB |
2774 | return 0; |
2775 | } | |
2776 | ||
2777 | ||
f698d856 | 2778 | int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len) |
f0706e82 | 2779 | { |
f0706e82 JB |
2780 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2781 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
2782 | *len = ifsta->ssid_len; | |
2783 | return 0; | |
2784 | } | |
2785 | ||
2786 | ||
f698d856 | 2787 | int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid) |
f0706e82 | 2788 | { |
f0706e82 JB |
2789 | struct ieee80211_if_sta *ifsta; |
2790 | int res; | |
2791 | ||
f0706e82 JB |
2792 | ifsta = &sdata->u.sta; |
2793 | ||
2794 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
2795 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
9d139c81 JB |
2796 | res = 0; |
2797 | /* | |
2798 | * Hack! See also ieee80211_sta_set_ssid. | |
2799 | */ | |
2800 | if (netif_running(sdata->dev)) | |
2801 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); | |
f0706e82 JB |
2802 | if (res) { |
2803 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
f698d856 | 2804 | "the low-level driver\n", sdata->dev->name); |
f0706e82 JB |
2805 | return res; |
2806 | } | |
2807 | } | |
2808 | ||
d6f2da5b JS |
2809 | if (is_valid_ether_addr(bssid)) |
2810 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 2811 | else |
d6f2da5b JS |
2812 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
2813 | ||
f0706e82 JB |
2814 | return 0; |
2815 | } | |
2816 | ||
2817 | ||
f698d856 | 2818 | int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len) |
f0706e82 | 2819 | { |
f0706e82 | 2820 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
988c0f72 | 2821 | |
f0706e82 JB |
2822 | kfree(ifsta->extra_ie); |
2823 | if (len == 0) { | |
2824 | ifsta->extra_ie = NULL; | |
2825 | ifsta->extra_ie_len = 0; | |
2826 | return 0; | |
2827 | } | |
2828 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
2829 | if (!ifsta->extra_ie) { | |
2830 | ifsta->extra_ie_len = 0; | |
2831 | return -ENOMEM; | |
2832 | } | |
2833 | memcpy(ifsta->extra_ie, ie, len); | |
2834 | ifsta->extra_ie_len = len; | |
2835 | return 0; | |
2836 | } | |
2837 | ||
2838 | ||
f698d856 | 2839 | struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata, |
988c0f72 | 2840 | struct sk_buff *skb, u8 *bssid, |
87291c02 | 2841 | u8 *addr, u64 supp_rates) |
f0706e82 | 2842 | { |
f698d856 | 2843 | struct ieee80211_local *local = sdata->local; |
f0706e82 | 2844 | struct sta_info *sta; |
0795af57 | 2845 | DECLARE_MAC_BUF(mac); |
87291c02 | 2846 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
2847 | |
2848 | /* TODO: Could consider removing the least recently used entry and | |
2849 | * allow new one to be added. */ | |
2850 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
2851 | if (net_ratelimit()) { | |
2852 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
f698d856 | 2853 | "entry %s\n", sdata->dev->name, print_mac(mac, addr)); |
f0706e82 JB |
2854 | } |
2855 | return NULL; | |
2856 | } | |
2857 | ||
1e188637 | 2858 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
87291c02 VK |
2859 | return NULL; |
2860 | ||
f4ea83dd | 2861 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
0795af57 | 2862 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
f698d856 | 2863 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name); |
f4ea83dd | 2864 | #endif |
f0706e82 | 2865 | |
73651ee6 JB |
2866 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
2867 | if (!sta) | |
f0706e82 JB |
2868 | return NULL; |
2869 | ||
07346f81 | 2870 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 2871 | |
8e1535d5 EG |
2872 | /* make sure mandatory rates are always added */ |
2873 | sta->supp_rates[band] = supp_rates | | |
2874 | ieee80211_sta_get_mandatory_rates(local, band); | |
f0706e82 JB |
2875 | |
2876 | rate_control_rate_init(sta, local); | |
2877 | ||
93e5deb1 | 2878 | if (sta_info_insert(sta)) |
73651ee6 | 2879 | return NULL; |
73651ee6 | 2880 | |
d0709a65 | 2881 | return sta; |
f0706e82 JB |
2882 | } |
2883 | ||
2884 | ||
60f8b39c JB |
2885 | static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata, |
2886 | struct ieee80211_if_sta *ifsta) | |
2887 | { | |
2888 | struct ieee80211_local *local = sdata->local; | |
2889 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
2890 | int top_rssi = 0, freq; | |
2891 | ||
2892 | spin_lock_bh(&local->sta_bss_lock); | |
2893 | freq = local->oper_channel->center_freq; | |
2894 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
2895 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
2896 | continue; | |
2897 | ||
2898 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | | |
2899 | IEEE80211_STA_AUTO_BSSID_SEL | | |
2900 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
2901 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
2902 | !!sdata->default_key)) | |
2903 | continue; | |
2904 | ||
2905 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && | |
2906 | bss->freq != freq) | |
2907 | continue; | |
2908 | ||
2909 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && | |
2910 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) | |
2911 | continue; | |
2912 | ||
2913 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && | |
2914 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) | |
2915 | continue; | |
2916 | ||
2917 | if (!selected || top_rssi < bss->signal) { | |
2918 | selected = bss; | |
2919 | top_rssi = bss->signal; | |
2920 | } | |
2921 | } | |
2922 | if (selected) | |
2923 | atomic_inc(&selected->users); | |
2924 | spin_unlock_bh(&local->sta_bss_lock); | |
2925 | ||
2926 | if (selected) { | |
2927 | ieee80211_set_freq(sdata, selected->freq); | |
2928 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) | |
2929 | ieee80211_sta_set_ssid(sdata, selected->ssid, | |
2930 | selected->ssid_len); | |
2931 | ieee80211_sta_set_bssid(sdata, selected->bssid); | |
b079ada7 | 2932 | ieee80211_sta_def_wmm_params(sdata, selected); |
60f8b39c JB |
2933 | |
2934 | /* Send out direct probe if no probe resp was received or | |
2935 | * the one we have is outdated | |
2936 | */ | |
2937 | if (!selected->last_probe_resp || | |
2938 | time_after(jiffies, selected->last_probe_resp | |
2939 | + IEEE80211_SCAN_RESULT_EXPIRE)) | |
2940 | ifsta->state = IEEE80211_STA_MLME_DIRECT_PROBE; | |
2941 | else | |
2942 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2943 | ||
2944 | ieee80211_rx_bss_put(local, selected); | |
2945 | ieee80211_sta_reset_auth(sdata, ifsta); | |
2946 | return 0; | |
2947 | } else { | |
2948 | if (ifsta->assoc_scan_tries < IEEE80211_ASSOC_SCANS_MAX_TRIES) { | |
2949 | ifsta->assoc_scan_tries++; | |
2950 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) | |
2951 | ieee80211_sta_start_scan(sdata, NULL, 0); | |
2952 | else | |
2953 | ieee80211_sta_start_scan(sdata, ifsta->ssid, | |
2954 | ifsta->ssid_len); | |
2955 | ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE; | |
2956 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
2957 | } else | |
2958 | ifsta->state = IEEE80211_STA_MLME_DISABLED; | |
2959 | } | |
2960 | return -1; | |
2961 | } | |
2962 | ||
2963 | ||
f698d856 | 2964 | int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2965 | { |
f0706e82 JB |
2966 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2967 | ||
f4ea83dd | 2968 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f698d856 | 2969 | sdata->dev->name, reason); |
f0706e82 | 2970 | |
51fb61e7 JB |
2971 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
2972 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
2973 | return -EINVAL; |
2974 | ||
aa458d17 | 2975 | ieee80211_set_disassoc(sdata, ifsta, true, true, reason); |
f0706e82 JB |
2976 | return 0; |
2977 | } | |
2978 | ||
2979 | ||
f698d856 | 2980 | int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason) |
f0706e82 | 2981 | { |
f0706e82 JB |
2982 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
2983 | ||
f4ea83dd | 2984 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f698d856 | 2985 | sdata->dev->name, reason); |
f0706e82 | 2986 | |
51fb61e7 | 2987 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2988 | return -EINVAL; |
2989 | ||
d6f2da5b | 2990 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
2991 | return -1; |
2992 | ||
aa458d17 | 2993 | ieee80211_set_disassoc(sdata, ifsta, false, true, reason); |
f0706e82 JB |
2994 | return 0; |
2995 | } | |
84363e6e MA |
2996 | |
2997 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
2998 | enum ieee80211_notification_types notif_type) | |
2999 | { | |
3000 | struct ieee80211_local *local = hw_to_local(hw); | |
3001 | struct ieee80211_sub_if_data *sdata; | |
3002 | ||
3003 | switch (notif_type) { | |
3004 | case IEEE80211_NOTIFY_RE_ASSOC: | |
3005 | rcu_read_lock(); | |
3006 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
3e122be0 JB |
3007 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
3008 | continue; | |
84363e6e | 3009 | |
f698d856 | 3010 | ieee80211_sta_req_auth(sdata, &sdata->u.sta); |
84363e6e MA |
3011 | } |
3012 | rcu_read_unlock(); | |
3013 | break; | |
3014 | } | |
3015 | } | |
3016 | EXPORT_SYMBOL(ieee80211_notify_mac); | |
60f8b39c JB |
3017 | |
3018 | void ieee80211_sta_work(struct work_struct *work) | |
3019 | { | |
3020 | struct ieee80211_sub_if_data *sdata = | |
3021 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
3022 | struct ieee80211_local *local = sdata->local; | |
3023 | struct ieee80211_if_sta *ifsta; | |
3024 | struct sk_buff *skb; | |
3025 | ||
3026 | if (!netif_running(sdata->dev)) | |
3027 | return; | |
3028 | ||
3029 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
3030 | return; | |
3031 | ||
3032 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && | |
3033 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
3034 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) | |
3035 | return; | |
3036 | ifsta = &sdata->u.sta; | |
3037 | ||
3038 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
3039 | ieee80211_sta_rx_queued_mgmt(sdata, skb); | |
3040 | ||
3041 | #ifdef CONFIG_MAC80211_MESH | |
3042 | if (ifsta->preq_queue_len && | |
3043 | time_after(jiffies, | |
3044 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
3045 | mesh_path_start_discovery(sdata); | |
3046 | #endif | |
3047 | ||
3048 | if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE && | |
3049 | ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE && | |
3050 | ifsta->state != IEEE80211_STA_MLME_ASSOCIATE && | |
3051 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0fe8b33 | 3052 | ieee80211_sta_start_scan(sdata, ifsta->scan_ssid, ifsta->scan_ssid_len); |
60f8b39c JB |
3053 | return; |
3054 | } | |
3055 | ||
3056 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
3057 | if (ieee80211_sta_config_auth(sdata, ifsta)) | |
3058 | return; | |
3059 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3060 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
3061 | return; | |
3062 | ||
3063 | switch (ifsta->state) { | |
3064 | case IEEE80211_STA_MLME_DISABLED: | |
3065 | break; | |
3066 | case IEEE80211_STA_MLME_DIRECT_PROBE: | |
3067 | ieee80211_direct_probe(sdata, ifsta); | |
3068 | break; | |
3069 | case IEEE80211_STA_MLME_AUTHENTICATE: | |
3070 | ieee80211_authenticate(sdata, ifsta); | |
3071 | break; | |
3072 | case IEEE80211_STA_MLME_ASSOCIATE: | |
3073 | ieee80211_associate(sdata, ifsta); | |
3074 | break; | |
3075 | case IEEE80211_STA_MLME_ASSOCIATED: | |
3076 | ieee80211_associated(sdata, ifsta); | |
3077 | break; | |
3078 | case IEEE80211_STA_MLME_IBSS_SEARCH: | |
3079 | ieee80211_sta_find_ibss(sdata, ifsta); | |
3080 | break; | |
3081 | case IEEE80211_STA_MLME_IBSS_JOINED: | |
3082 | ieee80211_sta_merge_ibss(sdata, ifsta); | |
3083 | break; | |
3084 | #ifdef CONFIG_MAC80211_MESH | |
3085 | case IEEE80211_STA_MLME_MESH_UP: | |
3086 | ieee80211_mesh_housekeeping(sdata, ifsta); | |
3087 | break; | |
3088 | #endif | |
3089 | default: | |
3090 | WARN_ON(1); | |
3091 | break; | |
3092 | } | |
3093 | ||
3094 | if (ieee80211_privacy_mismatch(sdata, ifsta)) { | |
3095 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
3096 | "mixed-cell disabled - disassociate\n", sdata->dev->name); | |
3097 | ||
3098 | ieee80211_set_disassoc(sdata, ifsta, false, true, | |
3099 | WLAN_REASON_UNSPECIFIED); | |
3100 | } | |
3101 | } | |
0a51b27e JB |
3102 | |
3103 | void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) | |
3104 | { | |
3105 | struct ieee80211_sub_if_data *sdata = local->scan_sdata; | |
3106 | struct ieee80211_if_sta *ifsta; | |
3107 | ||
3108 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { | |
3109 | ifsta = &sdata->u.sta; | |
3110 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || | |
3111 | (!(ifsta->state == IEEE80211_STA_MLME_IBSS_JOINED) && | |
3112 | !ieee80211_sta_active_ibss(sdata))) | |
3113 | ieee80211_sta_find_ibss(sdata, ifsta); | |
3114 | } | |
3115 | } |