Commit | Line | Data |
---|---|---|
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 | ||
14 | /* TODO: | |
f0706e82 JB |
15 | * order BSS list by RSSI(?) ("quality of AP") |
16 | * scan result table filtering (by capability (privacy, IBSS/BSS, WPA/RSN IE, | |
17 | * SSID) | |
18 | */ | |
5b323edb | 19 | #include <linux/delay.h> |
f0706e82 JB |
20 | #include <linux/if_ether.h> |
21 | #include <linux/skbuff.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/if_arp.h> | |
24 | #include <linux/wireless.h> | |
25 | #include <linux/random.h> | |
26 | #include <linux/etherdevice.h> | |
d0709a65 | 27 | #include <linux/rtnetlink.h> |
f0706e82 JB |
28 | #include <net/iw_handler.h> |
29 | #include <asm/types.h> | |
f0706e82 JB |
30 | |
31 | #include <net/mac80211.h> | |
32 | #include "ieee80211_i.h" | |
2c8dccc7 JB |
33 | #include "rate.h" |
34 | #include "led.h" | |
f709fc69 | 35 | #include "mesh.h" |
f0706e82 JB |
36 | |
37 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
39 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
40 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
41 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
f709fc69 | 42 | #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) |
f0706e82 JB |
43 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) |
44 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
45 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
46 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
872ba533 | 47 | #define IEEE80211_IBSS_JOIN_TIMEOUT (7 * HZ) |
f0706e82 JB |
48 | |
49 | #define IEEE80211_PROBE_DELAY (HZ / 33) | |
50 | #define IEEE80211_CHANNEL_TIME (HZ / 33) | |
51 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) | |
52 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
53 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) | |
54 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
f709fc69 | 55 | #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) |
f0706e82 JB |
56 | |
57 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
58 | ||
59 | ||
f0706e82 JB |
60 | #define ERP_INFO_USE_PROTECTION BIT(1) |
61 | ||
9f985b0e RR |
62 | /* mgmt header + 1 byte action code */ |
63 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) | |
64 | ||
65 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
66 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
67 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
688b88a4 RR |
68 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
69 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
9f985b0e | 70 | |
07db2183 RR |
71 | /* next values represent the buffer size for A-MPDU frame. |
72 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ | |
73 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
74 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
75 | ||
f0706e82 JB |
76 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, |
77 | u8 *ssid, size_t ssid_len); | |
78 | static struct ieee80211_sta_bss * | |
8318d78a | 79 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 80 | u8 *ssid, u8 ssid_len); |
3e122be0 | 81 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
f0706e82 JB |
82 | struct ieee80211_sta_bss *bss); |
83 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
84 | struct ieee80211_if_sta *ifsta); | |
85 | static int ieee80211_sta_wep_configured(struct net_device *dev); | |
86 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
87 | u8 *ssid, size_t ssid_len); | |
88 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
89 | struct ieee80211_if_sta *ifsta); | |
712590de | 90 | static void sta_rx_agg_session_timer_expired(unsigned long data); |
f0706e82 JB |
91 | |
92 | ||
ee385855 LCC |
93 | void ieee802_11_parse_elems(u8 *start, size_t len, |
94 | struct ieee802_11_elems *elems) | |
f0706e82 JB |
95 | { |
96 | size_t left = len; | |
97 | u8 *pos = start; | |
f0706e82 JB |
98 | |
99 | memset(elems, 0, sizeof(*elems)); | |
100 | ||
101 | while (left >= 2) { | |
102 | u8 id, elen; | |
103 | ||
104 | id = *pos++; | |
105 | elen = *pos++; | |
106 | left -= 2; | |
107 | ||
67a4cce4 JL |
108 | if (elen > left) |
109 | return; | |
f0706e82 JB |
110 | |
111 | switch (id) { | |
112 | case WLAN_EID_SSID: | |
113 | elems->ssid = pos; | |
114 | elems->ssid_len = elen; | |
115 | break; | |
116 | case WLAN_EID_SUPP_RATES: | |
117 | elems->supp_rates = pos; | |
118 | elems->supp_rates_len = elen; | |
119 | break; | |
120 | case WLAN_EID_FH_PARAMS: | |
121 | elems->fh_params = pos; | |
122 | elems->fh_params_len = elen; | |
123 | break; | |
124 | case WLAN_EID_DS_PARAMS: | |
125 | elems->ds_params = pos; | |
126 | elems->ds_params_len = elen; | |
127 | break; | |
128 | case WLAN_EID_CF_PARAMS: | |
129 | elems->cf_params = pos; | |
130 | elems->cf_params_len = elen; | |
131 | break; | |
132 | case WLAN_EID_TIM: | |
133 | elems->tim = pos; | |
134 | elems->tim_len = elen; | |
135 | break; | |
136 | case WLAN_EID_IBSS_PARAMS: | |
137 | elems->ibss_params = pos; | |
138 | elems->ibss_params_len = elen; | |
139 | break; | |
140 | case WLAN_EID_CHALLENGE: | |
141 | elems->challenge = pos; | |
142 | elems->challenge_len = elen; | |
143 | break; | |
144 | case WLAN_EID_WPA: | |
145 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
146 | pos[2] == 0xf2) { | |
147 | /* Microsoft OUI (00:50:F2) */ | |
148 | if (pos[3] == 1) { | |
149 | /* OUI Type 1 - WPA IE */ | |
150 | elems->wpa = pos; | |
151 | elems->wpa_len = elen; | |
152 | } else if (elen >= 5 && pos[3] == 2) { | |
153 | if (pos[4] == 0) { | |
154 | elems->wmm_info = pos; | |
155 | elems->wmm_info_len = elen; | |
156 | } else if (pos[4] == 1) { | |
157 | elems->wmm_param = pos; | |
158 | elems->wmm_param_len = elen; | |
159 | } | |
160 | } | |
161 | } | |
162 | break; | |
163 | case WLAN_EID_RSN: | |
164 | elems->rsn = pos; | |
165 | elems->rsn_len = elen; | |
166 | break; | |
167 | case WLAN_EID_ERP_INFO: | |
168 | elems->erp_info = pos; | |
169 | elems->erp_info_len = elen; | |
170 | break; | |
171 | case WLAN_EID_EXT_SUPP_RATES: | |
172 | elems->ext_supp_rates = pos; | |
173 | elems->ext_supp_rates_len = elen; | |
174 | break; | |
c7153508 RR |
175 | case WLAN_EID_HT_CAPABILITY: |
176 | elems->ht_cap_elem = pos; | |
177 | elems->ht_cap_elem_len = elen; | |
178 | break; | |
179 | case WLAN_EID_HT_EXTRA_INFO: | |
180 | elems->ht_info_elem = pos; | |
181 | elems->ht_info_elem_len = elen; | |
182 | break; | |
ee385855 LCC |
183 | case WLAN_EID_MESH_ID: |
184 | elems->mesh_id = pos; | |
185 | elems->mesh_id_len = elen; | |
186 | break; | |
187 | case WLAN_EID_MESH_CONFIG: | |
188 | elems->mesh_config = pos; | |
189 | elems->mesh_config_len = elen; | |
190 | break; | |
191 | case WLAN_EID_PEER_LINK: | |
192 | elems->peer_link = pos; | |
193 | elems->peer_link_len = elen; | |
194 | break; | |
195 | case WLAN_EID_PREQ: | |
196 | elems->preq = pos; | |
197 | elems->preq_len = elen; | |
198 | break; | |
199 | case WLAN_EID_PREP: | |
200 | elems->prep = pos; | |
201 | elems->prep_len = elen; | |
202 | break; | |
203 | case WLAN_EID_PERR: | |
204 | elems->perr = pos; | |
205 | elems->perr_len = elen; | |
206 | break; | |
f2df3859 AK |
207 | case WLAN_EID_CHANNEL_SWITCH: |
208 | elems->ch_switch_elem = pos; | |
209 | elems->ch_switch_elem_len = elen; | |
210 | break; | |
211 | case WLAN_EID_QUIET: | |
212 | if (!elems->quiet_elem) { | |
213 | elems->quiet_elem = pos; | |
214 | elems->quiet_elem_len = elen; | |
215 | } | |
216 | elems->num_of_quiet_elem++; | |
217 | break; | |
218 | case WLAN_EID_COUNTRY: | |
219 | elems->country_elem = pos; | |
220 | elems->country_elem_len = elen; | |
221 | break; | |
222 | case WLAN_EID_PWR_CONSTRAINT: | |
223 | elems->pwr_constr_elem = pos; | |
224 | elems->pwr_constr_elem_len = elen; | |
225 | break; | |
f0706e82 | 226 | default: |
f0706e82 JB |
227 | break; |
228 | } | |
229 | ||
230 | left -= elen; | |
231 | pos += elen; | |
232 | } | |
f0706e82 JB |
233 | } |
234 | ||
235 | ||
f0706e82 JB |
236 | static int ecw2cw(int ecw) |
237 | { | |
ac2bf324 | 238 | return (1 << ecw) - 1; |
f0706e82 JB |
239 | } |
240 | ||
e2839d8f VK |
241 | |
242 | static void ieee80211_sta_def_wmm_params(struct net_device *dev, | |
243 | struct ieee80211_sta_bss *bss, | |
244 | int ibss) | |
245 | { | |
246 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
247 | struct ieee80211_local *local = sdata->local; | |
248 | int i, have_higher_than_11mbit = 0; | |
249 | ||
250 | ||
251 | /* cf. IEEE 802.11 9.2.12 */ | |
252 | for (i = 0; i < bss->supp_rates_len; i++) | |
253 | if ((bss->supp_rates[i] & 0x7f) * 5 > 110) | |
254 | have_higher_than_11mbit = 1; | |
255 | ||
256 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
257 | have_higher_than_11mbit) | |
258 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
259 | else | |
260 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
261 | ||
262 | ||
263 | if (local->ops->conf_tx) { | |
264 | struct ieee80211_tx_queue_params qparam; | |
e2839d8f VK |
265 | |
266 | memset(&qparam, 0, sizeof(qparam)); | |
267 | ||
268 | qparam.aifs = 2; | |
269 | ||
270 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
271 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
272 | qparam.cw_min = 31; | |
273 | else | |
274 | qparam.cw_min = 15; | |
275 | ||
276 | qparam.cw_max = 1023; | |
277 | qparam.txop = 0; | |
278 | ||
e100bb64 JB |
279 | for (i = 0; i < local_to_hw(local)->queues; i++) |
280 | local->ops->conf_tx(local_to_hw(local), i, &qparam); | |
e2839d8f VK |
281 | } |
282 | } | |
283 | ||
f0706e82 JB |
284 | static void ieee80211_sta_wmm_params(struct net_device *dev, |
285 | struct ieee80211_if_sta *ifsta, | |
286 | u8 *wmm_param, size_t wmm_param_len) | |
287 | { | |
288 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
289 | struct ieee80211_tx_queue_params params; | |
290 | size_t left; | |
291 | int count; | |
292 | u8 *pos; | |
293 | ||
3434fbd3 JB |
294 | if (!(ifsta->flags & IEEE80211_STA_WMM_ENABLED)) |
295 | return; | |
296 | ||
297 | if (!wmm_param) | |
298 | return; | |
299 | ||
f0706e82 JB |
300 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) |
301 | return; | |
302 | count = wmm_param[6] & 0x0f; | |
303 | if (count == ifsta->wmm_last_param_set) | |
304 | return; | |
305 | ifsta->wmm_last_param_set = count; | |
306 | ||
307 | pos = wmm_param + 8; | |
308 | left = wmm_param_len - 8; | |
309 | ||
310 | memset(¶ms, 0, sizeof(params)); | |
311 | ||
312 | if (!local->ops->conf_tx) | |
313 | return; | |
314 | ||
315 | local->wmm_acm = 0; | |
316 | for (; left >= 4; left -= 4, pos += 4) { | |
317 | int aci = (pos[0] >> 5) & 0x03; | |
318 | int acm = (pos[0] >> 4) & 0x01; | |
319 | int queue; | |
320 | ||
321 | switch (aci) { | |
322 | case 1: | |
e100bb64 | 323 | queue = 3; |
988c0f72 | 324 | if (acm) |
f0706e82 | 325 | local->wmm_acm |= BIT(0) | BIT(3); |
f0706e82 JB |
326 | break; |
327 | case 2: | |
e100bb64 | 328 | queue = 1; |
988c0f72 | 329 | if (acm) |
f0706e82 | 330 | local->wmm_acm |= BIT(4) | BIT(5); |
f0706e82 JB |
331 | break; |
332 | case 3: | |
e100bb64 | 333 | queue = 0; |
988c0f72 | 334 | if (acm) |
f0706e82 | 335 | local->wmm_acm |= BIT(6) | BIT(7); |
f0706e82 JB |
336 | break; |
337 | case 0: | |
338 | default: | |
e100bb64 | 339 | queue = 2; |
988c0f72 | 340 | if (acm) |
f0706e82 | 341 | local->wmm_acm |= BIT(1) | BIT(2); |
f0706e82 JB |
342 | break; |
343 | } | |
344 | ||
345 | params.aifs = pos[0] & 0x0f; | |
346 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
347 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
f434b2d1 | 348 | params.txop = get_unaligned_le16(pos + 2); |
f4ea83dd | 349 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
f0706e82 | 350 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 351 | "cWmin=%d cWmax=%d txop=%d\n", |
f0706e82 | 352 | dev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
353 | params.cw_max, params.txop); |
354 | #endif | |
f0706e82 JB |
355 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
356 | * AC for now) */ | |
357 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
358 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
359 | "parameters for queue %d\n", dev->name, queue); | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
50c4afb9 JL |
364 | static u32 ieee80211_handle_protect_preamb(struct ieee80211_sub_if_data *sdata, |
365 | bool use_protection, | |
366 | bool use_short_preamble) | |
5628221c | 367 | { |
471b3efd | 368 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
ebd74487 | 369 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c | 370 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
0795af57 | 371 | DECLARE_MAC_BUF(mac); |
ebd74487 | 372 | #endif |
471b3efd | 373 | u32 changed = 0; |
5628221c | 374 | |
471b3efd | 375 | if (use_protection != bss_conf->use_cts_prot) { |
f4ea83dd | 376 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
5628221c DD |
377 | if (net_ratelimit()) { |
378 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 379 | "%s)\n", |
471b3efd | 380 | sdata->dev->name, |
5628221c | 381 | use_protection ? "enabled" : "disabled", |
0795af57 | 382 | print_mac(mac, ifsta->bssid)); |
5628221c | 383 | } |
f4ea83dd | 384 | #endif |
471b3efd JB |
385 | bss_conf->use_cts_prot = use_protection; |
386 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 387 | } |
7e9ed188 | 388 | |
d43c7b37 | 389 | if (use_short_preamble != bss_conf->use_short_preamble) { |
f4ea83dd | 390 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
7e9ed188 DD |
391 | if (net_ratelimit()) { |
392 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 393 | " (BSSID=%s)\n", |
471b3efd | 394 | sdata->dev->name, |
d43c7b37 | 395 | use_short_preamble ? "short" : "long", |
0795af57 | 396 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 397 | } |
f4ea83dd | 398 | #endif |
d43c7b37 | 399 | bss_conf->use_short_preamble = use_short_preamble; |
471b3efd | 400 | changed |= BSS_CHANGED_ERP_PREAMBLE; |
7e9ed188 | 401 | } |
d9430a32 | 402 | |
471b3efd | 403 | return changed; |
5628221c DD |
404 | } |
405 | ||
50c4afb9 JL |
406 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
407 | u8 erp_value) | |
408 | { | |
409 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; | |
410 | bool use_short_preamble = (erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0; | |
411 | ||
412 | return ieee80211_handle_protect_preamb(sdata, | |
413 | use_protection, use_short_preamble); | |
414 | } | |
415 | ||
416 | static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, | |
417 | struct ieee80211_sta_bss *bss) | |
418 | { | |
419 | u32 changed = 0; | |
420 | ||
421 | if (bss->has_erp_value) | |
422 | changed |= ieee80211_handle_erp_ie(sdata, bss->erp_value); | |
423 | else { | |
424 | u16 capab = bss->capability; | |
425 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
426 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
427 | } | |
428 | ||
429 | return changed; | |
430 | } | |
431 | ||
c7153508 RR |
432 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
433 | struct ieee80211_ht_info *ht_info) | |
434 | { | |
435 | ||
436 | if (ht_info == NULL) | |
437 | return -EINVAL; | |
438 | ||
439 | memset(ht_info, 0, sizeof(*ht_info)); | |
440 | ||
441 | if (ht_cap_ie) { | |
442 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
443 | ||
444 | ht_info->ht_supported = 1; | |
445 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
446 | ht_info->ampdu_factor = | |
447 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
448 | ht_info->ampdu_density = | |
449 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
450 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
451 | } else | |
452 | ht_info->ht_supported = 0; | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
458 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
459 | struct ieee80211_ht_bss_info *bss_info) | |
460 | { | |
461 | if (bss_info == NULL) | |
462 | return -EINVAL; | |
463 | ||
464 | memset(bss_info, 0, sizeof(*bss_info)); | |
465 | ||
466 | if (ht_add_info_ie) { | |
467 | u16 op_mode; | |
468 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
469 | ||
470 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
471 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
472 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
473 | } | |
474 | ||
475 | return 0; | |
476 | } | |
5628221c | 477 | |
f0706e82 JB |
478 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
479 | struct ieee80211_if_sta *ifsta) | |
480 | { | |
481 | char *buf; | |
482 | size_t len; | |
483 | int i; | |
484 | union iwreq_data wrqu; | |
485 | ||
486 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) | |
487 | return; | |
488 | ||
489 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + | |
0ec0b7ac | 490 | ifsta->assocresp_ies_len), GFP_KERNEL); |
f0706e82 JB |
491 | if (!buf) |
492 | return; | |
493 | ||
494 | len = sprintf(buf, "ASSOCINFO("); | |
495 | if (ifsta->assocreq_ies) { | |
496 | len += sprintf(buf + len, "ReqIEs="); | |
497 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { | |
498 | len += sprintf(buf + len, "%02x", | |
499 | ifsta->assocreq_ies[i]); | |
500 | } | |
501 | } | |
502 | if (ifsta->assocresp_ies) { | |
503 | if (ifsta->assocreq_ies) | |
504 | len += sprintf(buf + len, " "); | |
505 | len += sprintf(buf + len, "RespIEs="); | |
506 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
507 | len += sprintf(buf + len, "%02x", | |
508 | ifsta->assocresp_ies[i]); | |
509 | } | |
510 | } | |
511 | len += sprintf(buf + len, ")"); | |
512 | ||
513 | if (len > IW_CUSTOM_MAX) { | |
514 | len = sprintf(buf, "ASSOCRESPIE="); | |
515 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
516 | len += sprintf(buf + len, "%02x", | |
517 | ifsta->assocresp_ies[i]); | |
518 | } | |
519 | } | |
520 | ||
521 | memset(&wrqu, 0, sizeof(wrqu)); | |
522 | wrqu.data.length = len; | |
523 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
524 | ||
525 | kfree(buf); | |
526 | } | |
527 | ||
528 | ||
529 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 530 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 531 | bool assoc) |
f0706e82 | 532 | { |
471b3efd JB |
533 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
534 | struct ieee80211_local *local = sdata->local; | |
38668c05 | 535 | struct ieee80211_conf *conf = &local_to_hw(local)->conf; |
f0706e82 | 536 | union iwreq_data wrqu; |
471b3efd | 537 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 538 | |
f0706e82 | 539 | if (assoc) { |
5628221c | 540 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
541 | |
542 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
543 | ||
51fb61e7 | 544 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 545 | return; |
5628221c | 546 | |
65c107ab | 547 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
38668c05 | 548 | conf->channel->center_freq, |
cffdd30d | 549 | ifsta->ssid, ifsta->ssid_len); |
5628221c | 550 | if (bss) { |
21c0cbe7 TW |
551 | /* set timing information */ |
552 | sdata->bss_conf.beacon_int = bss->beacon_int; | |
553 | sdata->bss_conf.timestamp = bss->timestamp; | |
98f7dfd8 | 554 | sdata->bss_conf.dtim_period = bss->dtim_period; |
21c0cbe7 | 555 | |
50c4afb9 | 556 | changed |= ieee80211_handle_bss_capability(sdata, bss); |
21c0cbe7 | 557 | |
3e122be0 | 558 | ieee80211_rx_bss_put(local, bss); |
5628221c DD |
559 | } |
560 | ||
38668c05 TW |
561 | if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
562 | changed |= BSS_CHANGED_HT; | |
563 | sdata->bss_conf.assoc_ht = 1; | |
564 | sdata->bss_conf.ht_conf = &conf->ht_conf; | |
565 | sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; | |
566 | } | |
567 | ||
d6f2da5b | 568 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
569 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
570 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
571 | ieee80211_sta_send_associnfo(dev, ifsta); | |
572 | } else { | |
8db9369f | 573 | netif_carrier_off(dev); |
85249e5f | 574 | ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid); |
d6f2da5b | 575 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
fc32f924 | 576 | changed |= ieee80211_reset_erp_info(dev); |
38668c05 TW |
577 | |
578 | sdata->bss_conf.assoc_ht = 0; | |
579 | sdata->bss_conf.ht_conf = NULL; | |
580 | sdata->bss_conf.ht_bss_conf = NULL; | |
581 | ||
f0706e82 JB |
582 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
583 | } | |
f0706e82 | 584 | ifsta->last_probe = jiffies; |
47f0c502 | 585 | ieee80211_led_assoc(local, assoc); |
471b3efd | 586 | |
b2205256 | 587 | sdata->bss_conf.assoc = assoc; |
471b3efd | 588 | ieee80211_bss_info_change_notify(sdata, changed); |
8db9369f GC |
589 | |
590 | if (assoc) | |
591 | netif_carrier_on(dev); | |
592 | ||
41a7be48 RC |
593 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; |
594 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
f0706e82 JB |
595 | } |
596 | ||
597 | static void ieee80211_set_disassoc(struct net_device *dev, | |
598 | struct ieee80211_if_sta *ifsta, int deauth) | |
599 | { | |
600 | if (deauth) | |
601 | ifsta->auth_tries = 0; | |
602 | ifsta->assoc_tries = 0; | |
603 | ieee80211_set_associated(dev, ifsta, 0); | |
604 | } | |
605 | ||
ee385855 LCC |
606 | void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, |
607 | int encrypt) | |
f0706e82 JB |
608 | { |
609 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 JB |
610 | |
611 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
612 | skb->dev = sdata->local->mdev; | |
613 | skb_set_mac_header(skb, 0); | |
614 | skb_set_network_header(skb, 0); | |
615 | skb_set_transport_header(skb, 0); | |
616 | ||
d0f09804 JB |
617 | skb->iif = sdata->dev->ifindex; |
618 | skb->do_not_encrypt = !encrypt; | |
f0706e82 JB |
619 | |
620 | dev_queue_xmit(skb); | |
621 | } | |
622 | ||
623 | ||
624 | static void ieee80211_send_auth(struct net_device *dev, | |
625 | struct ieee80211_if_sta *ifsta, | |
626 | int transaction, u8 *extra, size_t extra_len, | |
627 | int encrypt) | |
628 | { | |
629 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
630 | struct sk_buff *skb; | |
631 | struct ieee80211_mgmt *mgmt; | |
632 | ||
633 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
634 | sizeof(*mgmt) + 6 + extra_len); | |
635 | if (!skb) { | |
636 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
637 | "frame\n", dev->name); | |
638 | return; | |
639 | } | |
640 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
641 | ||
642 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
643 | memset(mgmt, 0, 24 + 6); | |
644 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
645 | IEEE80211_STYPE_AUTH); | |
646 | if (encrypt) | |
647 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
648 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
649 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
650 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
651 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
652 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
653 | ifsta->auth_transaction = transaction + 1; | |
654 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
655 | if (extra) | |
656 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
657 | ||
658 | ieee80211_sta_tx(dev, skb, encrypt); | |
659 | } | |
660 | ||
661 | ||
662 | static void ieee80211_authenticate(struct net_device *dev, | |
663 | struct ieee80211_if_sta *ifsta) | |
664 | { | |
0795af57 JP |
665 | DECLARE_MAC_BUF(mac); |
666 | ||
f0706e82 JB |
667 | ifsta->auth_tries++; |
668 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 669 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 670 | " timed out\n", |
0795af57 | 671 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
672 | ifsta->state = IEEE80211_DISABLED; |
673 | return; | |
674 | } | |
675 | ||
676 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
677 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
678 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
679 | |
680 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
681 | ||
682 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
683 | } | |
684 | ||
36d16ae7 HS |
685 | static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss, |
686 | struct ieee80211_supported_band *sband, | |
687 | u64 *rates) | |
688 | { | |
689 | int i, j, count; | |
690 | *rates = 0; | |
691 | count = 0; | |
692 | for (i = 0; i < bss->supp_rates_len; i++) { | |
693 | int rate = (bss->supp_rates[i] & 0x7F) * 5; | |
694 | ||
695 | for (j = 0; j < sband->n_bitrates; j++) | |
696 | if (sband->bitrates[j].bitrate == rate) { | |
697 | *rates |= BIT(j); | |
698 | count++; | |
699 | break; | |
700 | } | |
701 | } | |
702 | ||
703 | return count; | |
704 | } | |
f0706e82 JB |
705 | |
706 | static void ieee80211_send_assoc(struct net_device *dev, | |
707 | struct ieee80211_if_sta *ifsta) | |
708 | { | |
709 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f0706e82 JB |
710 | struct sk_buff *skb; |
711 | struct ieee80211_mgmt *mgmt; | |
712 | u8 *pos, *ies; | |
36d16ae7 | 713 | int i, len, count, rates_len, supp_rates_len; |
f0706e82 JB |
714 | u16 capab; |
715 | struct ieee80211_sta_bss *bss; | |
716 | int wmm = 0; | |
8318d78a | 717 | struct ieee80211_supported_band *sband; |
36d16ae7 | 718 | u64 rates = 0; |
f0706e82 JB |
719 | |
720 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
721 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
722 | ifsta->ssid_len); | |
723 | if (!skb) { | |
724 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
725 | "frame\n", dev->name); | |
726 | return; | |
727 | } | |
728 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
729 | ||
8318d78a JB |
730 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
731 | ||
f0706e82 | 732 | capab = ifsta->capab; |
8318d78a JB |
733 | |
734 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
735 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
736 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
737 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
738 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
f0706e82 | 739 | } |
8318d78a JB |
740 | |
741 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, | |
742 | local->hw.conf.channel->center_freq, | |
cffdd30d | 743 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
744 | if (bss) { |
745 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
746 | capab |= WLAN_CAPABILITY_PRIVACY; | |
988c0f72 | 747 | if (bss->wmm_ie) |
f0706e82 | 748 | wmm = 1; |
0d580a77 HS |
749 | |
750 | /* get all rates supported by the device and the AP as | |
751 | * some APs don't like getting a superset of their rates | |
752 | * in the association request (e.g. D-Link DAP 1353 in | |
753 | * b-only mode) */ | |
754 | rates_len = ieee80211_compatible_rates(bss, sband, &rates); | |
755 | ||
06ff47bc TW |
756 | if ((bss->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) && |
757 | (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT)) | |
758 | capab |= WLAN_CAPABILITY_SPECTRUM_MGMT; | |
759 | ||
3e122be0 | 760 | ieee80211_rx_bss_put(local, bss); |
0d580a77 HS |
761 | } else { |
762 | rates = ~0; | |
763 | rates_len = sband->n_bitrates; | |
f0706e82 JB |
764 | } |
765 | ||
766 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
767 | memset(mgmt, 0, 24); | |
768 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
769 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
770 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
771 | ||
d6f2da5b | 772 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
773 | skb_put(skb, 10); |
774 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
775 | IEEE80211_STYPE_REASSOC_REQ); | |
776 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
ea95bba4 TW |
777 | mgmt->u.reassoc_req.listen_interval = |
778 | cpu_to_le16(local->hw.conf.listen_interval); | |
f0706e82 JB |
779 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, |
780 | ETH_ALEN); | |
781 | } else { | |
782 | skb_put(skb, 4); | |
783 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
784 | IEEE80211_STYPE_ASSOC_REQ); | |
785 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
ea95bba4 TW |
786 | mgmt->u.reassoc_req.listen_interval = |
787 | cpu_to_le16(local->hw.conf.listen_interval); | |
f0706e82 JB |
788 | } |
789 | ||
790 | /* SSID */ | |
791 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
792 | *pos++ = WLAN_EID_SSID; | |
793 | *pos++ = ifsta->ssid_len; | |
794 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
795 | ||
0d580a77 | 796 | /* add all rates which were marked to be used above */ |
36d16ae7 HS |
797 | supp_rates_len = rates_len; |
798 | if (supp_rates_len > 8) | |
799 | supp_rates_len = 8; | |
800 | ||
8318d78a | 801 | len = sband->n_bitrates; |
36d16ae7 | 802 | pos = skb_put(skb, supp_rates_len + 2); |
f0706e82 | 803 | *pos++ = WLAN_EID_SUPP_RATES; |
36d16ae7 | 804 | *pos++ = supp_rates_len; |
f0706e82 | 805 | |
36d16ae7 HS |
806 | count = 0; |
807 | for (i = 0; i < sband->n_bitrates; i++) { | |
808 | if (BIT(i) & rates) { | |
8318d78a | 809 | int rate = sband->bitrates[i].bitrate; |
f0706e82 | 810 | *pos++ = (u8) (rate / 5); |
36d16ae7 HS |
811 | if (++count == 8) |
812 | break; | |
813 | } | |
814 | } | |
815 | ||
816 | if (count == 8) { | |
817 | pos = skb_put(skb, rates_len - count + 2); | |
818 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
819 | *pos++ = rates_len - count; | |
820 | ||
821 | for (i++; i < sband->n_bitrates; i++) { | |
822 | if (BIT(i) & rates) { | |
823 | int rate = sband->bitrates[i].bitrate; | |
824 | *pos++ = (u8) (rate / 5); | |
825 | } | |
f0706e82 JB |
826 | } |
827 | } | |
828 | ||
06ff47bc TW |
829 | if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) { |
830 | /* 1. power capabilities */ | |
831 | pos = skb_put(skb, 4); | |
832 | *pos++ = WLAN_EID_PWR_CAPABILITY; | |
833 | *pos++ = 2; | |
834 | *pos++ = 0; /* min tx power */ | |
835 | *pos++ = local->hw.conf.channel->max_power; /* max tx power */ | |
836 | ||
837 | /* 2. supported channels */ | |
838 | /* TODO: get this in reg domain format */ | |
839 | pos = skb_put(skb, 2 * sband->n_channels + 2); | |
840 | *pos++ = WLAN_EID_SUPPORTED_CHANNELS; | |
841 | *pos++ = 2 * sband->n_channels; | |
842 | for (i = 0; i < sband->n_channels; i++) { | |
843 | *pos++ = ieee80211_frequency_to_channel( | |
844 | sband->channels[i].center_freq); | |
845 | *pos++ = 1; /* one channel in the subband*/ | |
846 | } | |
847 | } | |
848 | ||
f0706e82 JB |
849 | if (ifsta->extra_ie) { |
850 | pos = skb_put(skb, ifsta->extra_ie_len); | |
851 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
852 | } | |
853 | ||
d6f2da5b | 854 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
855 | pos = skb_put(skb, 9); |
856 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
857 | *pos++ = 7; /* len */ | |
858 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
859 | *pos++ = 0x50; | |
860 | *pos++ = 0xf2; | |
861 | *pos++ = 2; /* WME */ | |
862 | *pos++ = 0; /* WME info */ | |
863 | *pos++ = 1; /* WME ver */ | |
864 | *pos++ = 0; | |
865 | } | |
3434fbd3 | 866 | |
c7153508 | 867 | /* wmm support is a must to HT */ |
3434fbd3 | 868 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED) && |
9306102e EG |
869 | sband->ht_info.ht_supported && bss->ht_add_ie) { |
870 | struct ieee80211_ht_addt_info *ht_add_info = | |
871 | (struct ieee80211_ht_addt_info *)bss->ht_add_ie; | |
872 | u16 cap = sband->ht_info.cap; | |
873 | __le16 tmp; | |
874 | u32 flags = local->hw.conf.channel->flags; | |
875 | ||
876 | switch (ht_add_info->ht_param & IEEE80211_HT_IE_CHA_SEC_OFFSET) { | |
877 | case IEEE80211_HT_IE_CHA_SEC_ABOVE: | |
878 | if (flags & IEEE80211_CHAN_NO_FAT_ABOVE) { | |
879 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
880 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
881 | } | |
882 | break; | |
883 | case IEEE80211_HT_IE_CHA_SEC_BELOW: | |
884 | if (flags & IEEE80211_CHAN_NO_FAT_BELOW) { | |
885 | cap &= ~IEEE80211_HT_CAP_SUP_WIDTH; | |
886 | cap &= ~IEEE80211_HT_CAP_SGI_40; | |
887 | } | |
888 | break; | |
889 | } | |
890 | ||
891 | tmp = cpu_to_le16(cap); | |
c7153508 RR |
892 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
893 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
894 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
895 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
896 | memcpy(pos, &tmp, sizeof(u16)); | |
897 | pos += sizeof(u16); | |
8318d78a JB |
898 | /* TODO: needs a define here for << 2 */ |
899 | *pos++ = sband->ht_info.ampdu_factor | | |
900 | (sband->ht_info.ampdu_density << 2); | |
901 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
c7153508 | 902 | } |
f0706e82 JB |
903 | |
904 | kfree(ifsta->assocreq_ies); | |
905 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 906 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
907 | if (ifsta->assocreq_ies) |
908 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
909 | ||
910 | ieee80211_sta_tx(dev, skb, 0); | |
911 | } | |
912 | ||
913 | ||
914 | static void ieee80211_send_deauth(struct net_device *dev, | |
915 | struct ieee80211_if_sta *ifsta, u16 reason) | |
916 | { | |
917 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
918 | struct sk_buff *skb; | |
919 | struct ieee80211_mgmt *mgmt; | |
920 | ||
921 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
922 | if (!skb) { | |
923 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
924 | "frame\n", dev->name); | |
925 | return; | |
926 | } | |
927 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
928 | ||
929 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
930 | memset(mgmt, 0, 24); | |
931 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
932 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
933 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
934 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
935 | IEEE80211_STYPE_DEAUTH); | |
936 | skb_put(skb, 2); | |
937 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
938 | ||
939 | ieee80211_sta_tx(dev, skb, 0); | |
940 | } | |
941 | ||
942 | ||
943 | static void ieee80211_send_disassoc(struct net_device *dev, | |
944 | struct ieee80211_if_sta *ifsta, u16 reason) | |
945 | { | |
946 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
947 | struct sk_buff *skb; | |
948 | struct ieee80211_mgmt *mgmt; | |
949 | ||
950 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
951 | if (!skb) { | |
952 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
953 | "frame\n", dev->name); | |
954 | return; | |
955 | } | |
956 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
957 | ||
958 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
959 | memset(mgmt, 0, 24); | |
960 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
961 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
962 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
963 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
964 | IEEE80211_STYPE_DISASSOC); | |
965 | skb_put(skb, 2); | |
966 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
967 | ||
968 | ieee80211_sta_tx(dev, skb, 0); | |
969 | } | |
970 | ||
971 | ||
972 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
973 | struct ieee80211_if_sta *ifsta) | |
974 | { | |
65c107ab | 975 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 976 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
977 | int bss_privacy; |
978 | int wep_privacy; | |
979 | int privacy_invoked; | |
f0706e82 | 980 | |
5b98b1f7 | 981 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
982 | return 0; |
983 | ||
8318d78a JB |
984 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
985 | local->hw.conf.channel->center_freq, | |
cffdd30d | 986 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
987 | if (!bss) |
988 | return 0; | |
989 | ||
5b98b1f7 JB |
990 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
991 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
992 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 | 993 | |
3e122be0 | 994 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 995 | |
5b98b1f7 JB |
996 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
997 | return 0; | |
998 | ||
999 | return 1; | |
f0706e82 JB |
1000 | } |
1001 | ||
1002 | ||
1003 | static void ieee80211_associate(struct net_device *dev, | |
1004 | struct ieee80211_if_sta *ifsta) | |
1005 | { | |
0795af57 JP |
1006 | DECLARE_MAC_BUF(mac); |
1007 | ||
f0706e82 JB |
1008 | ifsta->assoc_tries++; |
1009 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 1010 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 1011 | " timed out\n", |
0795af57 | 1012 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
1013 | ifsta->state = IEEE80211_DISABLED; |
1014 | return; | |
1015 | } | |
1016 | ||
1017 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
1018 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
1019 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1020 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
1021 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
1022 | "mixed-cell disabled - abort association\n", dev->name); | |
1023 | ifsta->state = IEEE80211_DISABLED; | |
1024 | return; | |
1025 | } | |
1026 | ||
1027 | ieee80211_send_assoc(dev, ifsta); | |
1028 | ||
1029 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
1030 | } | |
1031 | ||
1032 | ||
1033 | static void ieee80211_associated(struct net_device *dev, | |
1034 | struct ieee80211_if_sta *ifsta) | |
1035 | { | |
1036 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1037 | struct sta_info *sta; | |
1038 | int disassoc; | |
0795af57 | 1039 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1040 | |
1041 | /* TODO: start monitoring current AP signal quality and number of | |
1042 | * missed beacons. Scan other channels every now and then and search | |
1043 | * for better APs. */ | |
1044 | /* TODO: remove expired BSSes */ | |
1045 | ||
1046 | ifsta->state = IEEE80211_ASSOCIATED; | |
1047 | ||
d0709a65 JB |
1048 | rcu_read_lock(); |
1049 | ||
f0706e82 JB |
1050 | sta = sta_info_get(local, ifsta->bssid); |
1051 | if (!sta) { | |
0795af57 JP |
1052 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
1053 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
1054 | disassoc = 1; |
1055 | } else { | |
1056 | disassoc = 0; | |
1057 | if (time_after(jiffies, | |
1058 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 1059 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 1060 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 1061 | "current AP %s - assume out of " |
f0706e82 | 1062 | "range\n", |
0795af57 | 1063 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 1064 | disassoc = 1; |
d0709a65 | 1065 | sta_info_unlink(&sta); |
d6f2da5b | 1066 | } else |
f0706e82 JB |
1067 | ieee80211_send_probe_req(dev, ifsta->bssid, |
1068 | local->scan_ssid, | |
1069 | local->scan_ssid_len); | |
d6f2da5b | 1070 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 1071 | } else { |
d6f2da5b | 1072 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
1073 | if (time_after(jiffies, ifsta->last_probe + |
1074 | IEEE80211_PROBE_INTERVAL)) { | |
1075 | ifsta->last_probe = jiffies; | |
1076 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
1077 | ifsta->ssid, | |
1078 | ifsta->ssid_len); | |
1079 | } | |
1080 | } | |
f0706e82 | 1081 | } |
d0709a65 JB |
1082 | |
1083 | rcu_read_unlock(); | |
1084 | ||
3b96766f | 1085 | if (disassoc && sta) |
d0709a65 | 1086 | sta_info_destroy(sta); |
d0709a65 | 1087 | |
f0706e82 | 1088 | if (disassoc) { |
2d192d95 MW |
1089 | ifsta->state = IEEE80211_DISABLED; |
1090 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
1091 | } else { |
1092 | mod_timer(&ifsta->timer, jiffies + | |
1093 | IEEE80211_MONITORING_INTERVAL); | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | ||
1098 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
1099 | u8 *ssid, size_t ssid_len) | |
1100 | { | |
1101 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 1102 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
1103 | struct sk_buff *skb; |
1104 | struct ieee80211_mgmt *mgmt; | |
1105 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
1106 | int i; | |
1107 | ||
1108 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
1109 | if (!skb) { | |
1110 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
1111 | "request\n", dev->name); | |
1112 | return; | |
1113 | } | |
1114 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1115 | ||
1116 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1117 | memset(mgmt, 0, 24); | |
1118 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1119 | IEEE80211_STYPE_PROBE_REQ); | |
1120 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1121 | if (dst) { | |
1122 | memcpy(mgmt->da, dst, ETH_ALEN); | |
1123 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
1124 | } else { | |
1125 | memset(mgmt->da, 0xff, ETH_ALEN); | |
1126 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
1127 | } | |
1128 | pos = skb_put(skb, 2 + ssid_len); | |
1129 | *pos++ = WLAN_EID_SSID; | |
1130 | *pos++ = ssid_len; | |
1131 | memcpy(pos, ssid, ssid_len); | |
1132 | ||
1133 | supp_rates = skb_put(skb, 2); | |
1134 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
1135 | supp_rates[1] = 0; | |
8318d78a JB |
1136 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
1137 | ||
1138 | for (i = 0; i < sband->n_bitrates; i++) { | |
1139 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
f0706e82 JB |
1140 | if (esupp_rates) { |
1141 | pos = skb_put(skb, 1); | |
1142 | esupp_rates[1]++; | |
1143 | } else if (supp_rates[1] == 8) { | |
1144 | esupp_rates = skb_put(skb, 3); | |
1145 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
1146 | esupp_rates[1] = 1; | |
1147 | pos = &esupp_rates[2]; | |
1148 | } else { | |
1149 | pos = skb_put(skb, 1); | |
1150 | supp_rates[1]++; | |
1151 | } | |
8318d78a | 1152 | *pos = rate->bitrate / 5; |
f0706e82 JB |
1153 | } |
1154 | ||
1155 | ieee80211_sta_tx(dev, skb, 0); | |
1156 | } | |
1157 | ||
1158 | ||
1159 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
1160 | { | |
1161 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1162 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 1163 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
1164 | return 0; |
1165 | return 1; | |
1166 | } | |
1167 | ||
1168 | ||
1169 | static void ieee80211_auth_completed(struct net_device *dev, | |
1170 | struct ieee80211_if_sta *ifsta) | |
1171 | { | |
1172 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 1173 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1174 | ieee80211_associate(dev, ifsta); |
1175 | } | |
1176 | ||
1177 | ||
1178 | static void ieee80211_auth_challenge(struct net_device *dev, | |
1179 | struct ieee80211_if_sta *ifsta, | |
1180 | struct ieee80211_mgmt *mgmt, | |
1181 | size_t len) | |
1182 | { | |
1183 | u8 *pos; | |
1184 | struct ieee802_11_elems elems; | |
1185 | ||
f0706e82 | 1186 | pos = mgmt->u.auth.variable; |
67a4cce4 | 1187 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f4ea83dd | 1188 | if (!elems.challenge) |
f0706e82 | 1189 | return; |
f0706e82 JB |
1190 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, |
1191 | elems.challenge_len + 2, 1); | |
1192 | } | |
1193 | ||
9f985b0e RR |
1194 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
1195 | u8 dialog_token, u16 status, u16 policy, | |
1196 | u16 buf_size, u16 timeout) | |
1197 | { | |
1198 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1199 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1200 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1201 | struct sk_buff *skb; | |
1202 | struct ieee80211_mgmt *mgmt; | |
1203 | u16 capab; | |
1204 | ||
3acea5b6 EK |
1205 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
1206 | ||
9f985b0e RR |
1207 | if (!skb) { |
1208 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1209 | "for addba resp frame\n", dev->name); | |
1210 | return; | |
1211 | } | |
1212 | ||
1213 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1214 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1215 | memset(mgmt, 0, 24); | |
1216 | memcpy(mgmt->da, da, ETH_ALEN); | |
1217 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1218 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1219 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1220 | else | |
1221 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1222 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1223 | IEEE80211_STYPE_ACTION); | |
1224 | ||
1225 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1226 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1227 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1228 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1229 | ||
1230 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1231 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1232 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1233 | ||
1234 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1235 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1236 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1237 | ||
1238 | ieee80211_sta_tx(dev, skb, 0); | |
1239 | ||
1240 | return; | |
1241 | } | |
1242 | ||
eadc8d9e RR |
1243 | void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, |
1244 | u16 tid, u8 dialog_token, u16 start_seq_num, | |
1245 | u16 agg_size, u16 timeout) | |
1246 | { | |
1247 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1248 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1249 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1250 | struct sk_buff *skb; | |
1251 | struct ieee80211_mgmt *mgmt; | |
1252 | u16 capab; | |
1253 | ||
3acea5b6 | 1254 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
eadc8d9e RR |
1255 | |
1256 | if (!skb) { | |
1257 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1258 | "for addba request frame\n", dev->name); | |
1259 | return; | |
1260 | } | |
1261 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1262 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1263 | memset(mgmt, 0, 24); | |
1264 | memcpy(mgmt->da, da, ETH_ALEN); | |
1265 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1266 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
1267 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); | |
1268 | else | |
1269 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1270 | ||
1271 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1272 | IEEE80211_STYPE_ACTION); | |
1273 | ||
1274 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); | |
1275 | ||
1276 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1277 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; | |
1278 | ||
1279 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; | |
1280 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ | |
1281 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1282 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ | |
1283 | ||
1284 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); | |
1285 | ||
1286 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); | |
1287 | mgmt->u.action.u.addba_req.start_seq_num = | |
1288 | cpu_to_le16(start_seq_num << 4); | |
1289 | ||
1290 | ieee80211_sta_tx(dev, skb, 0); | |
1291 | } | |
1292 | ||
9f985b0e RR |
1293 | static void ieee80211_sta_process_addba_request(struct net_device *dev, |
1294 | struct ieee80211_mgmt *mgmt, | |
1295 | size_t len) | |
1296 | { | |
1297 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1298 | struct ieee80211_hw *hw = &local->hw; |
1299 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1300 | struct sta_info *sta; |
07db2183 RR |
1301 | struct tid_ampdu_rx *tid_agg_rx; |
1302 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1303 | u8 dialog_token; |
07db2183 RR |
1304 | int ret = -EOPNOTSUPP; |
1305 | DECLARE_MAC_BUF(mac); | |
9f985b0e | 1306 | |
d0709a65 JB |
1307 | rcu_read_lock(); |
1308 | ||
9f985b0e | 1309 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1310 | if (!sta) { |
1311 | rcu_read_unlock(); | |
9f985b0e | 1312 | return; |
d0709a65 | 1313 | } |
9f985b0e RR |
1314 | |
1315 | /* extract session parameters from addba request frame */ | |
1316 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1317 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1318 | start_seq_num = |
1319 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1320 | |
1321 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1322 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1323 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1324 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1325 | ||
9f985b0e RR |
1326 | status = WLAN_STATUS_REQUEST_DECLINED; |
1327 | ||
07db2183 RR |
1328 | /* sanity check for incoming parameters: |
1329 | * check if configuration can support the BA policy | |
1330 | * and if buffer size does not exceeds max value */ | |
1331 | if (((ba_policy != 1) | |
1332 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1333 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1334 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1335 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1336 | if (net_ratelimit()) | |
7b9d44cd | 1337 | printk(KERN_DEBUG "AddBA Req with bad params from " |
07db2183 RR |
1338 | "%s on tid %u. policy %d, buffer size %d\n", |
1339 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1340 | buf_size); | |
1341 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1342 | goto end_no_lock; | |
1343 | } | |
1344 | /* determine default buffer size */ | |
1345 | if (buf_size == 0) { | |
8318d78a JB |
1346 | struct ieee80211_supported_band *sband; |
1347 | ||
1348 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1349 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1350 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1351 | } |
1352 | ||
07db2183 RR |
1353 | |
1354 | /* examine state machine */ | |
07346f81 | 1355 | spin_lock_bh(&sta->lock); |
07db2183 | 1356 | |
cee24a3e | 1357 | if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { |
07db2183 RR |
1358 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1359 | if (net_ratelimit()) | |
7b9d44cd | 1360 | printk(KERN_DEBUG "unexpected AddBA Req from " |
07db2183 RR |
1361 | "%s on tid %u\n", |
1362 | print_mac(mac, mgmt->sa), tid); | |
1363 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1364 | goto end; | |
1365 | } | |
1366 | ||
cee24a3e RR |
1367 | /* prepare A-MPDU MLME for Rx aggregation */ |
1368 | sta->ampdu_mlme.tid_rx[tid] = | |
1369 | kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); | |
1370 | if (!sta->ampdu_mlme.tid_rx[tid]) { | |
f4ea83dd | 1371 | #ifdef CONFIG_MAC80211_HT_DEBUG |
cee24a3e RR |
1372 | if (net_ratelimit()) |
1373 | printk(KERN_ERR "allocate rx mlme to tid %d failed\n", | |
1374 | tid); | |
f4ea83dd | 1375 | #endif |
cee24a3e RR |
1376 | goto end; |
1377 | } | |
1378 | /* rx timer */ | |
1379 | sta->ampdu_mlme.tid_rx[tid]->session_timer.function = | |
1380 | sta_rx_agg_session_timer_expired; | |
1381 | sta->ampdu_mlme.tid_rx[tid]->session_timer.data = | |
1382 | (unsigned long)&sta->timer_to_tid[tid]; | |
1383 | init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); | |
1384 | ||
1385 | tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; | |
1386 | ||
07db2183 RR |
1387 | /* prepare reordering buffer */ |
1388 | tid_agg_rx->reorder_buf = | |
c97c23e3 | 1389 | kmalloc(buf_size * sizeof(struct sk_buff *), GFP_ATOMIC); |
03147dfc | 1390 | if (!tid_agg_rx->reorder_buf) { |
f4ea83dd | 1391 | #ifdef CONFIG_MAC80211_HT_DEBUG |
03147dfc JB |
1392 | if (net_ratelimit()) |
1393 | printk(KERN_ERR "can not allocate reordering buffer " | |
1394 | "to tid %d\n", tid); | |
f4ea83dd | 1395 | #endif |
cee24a3e | 1396 | kfree(sta->ampdu_mlme.tid_rx[tid]); |
07db2183 RR |
1397 | goto end; |
1398 | } | |
1399 | memset(tid_agg_rx->reorder_buf, 0, | |
c97c23e3 | 1400 | buf_size * sizeof(struct sk_buff *)); |
07db2183 RR |
1401 | |
1402 | if (local->ops->ampdu_action) | |
1403 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1404 | sta->addr, tid, &start_seq_num); |
07db2183 | 1405 | #ifdef CONFIG_MAC80211_HT_DEBUG |
513a1025 | 1406 | printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); |
07db2183 RR |
1407 | #endif /* CONFIG_MAC80211_HT_DEBUG */ |
1408 | ||
1409 | if (ret) { | |
1410 | kfree(tid_agg_rx->reorder_buf); | |
cee24a3e RR |
1411 | kfree(tid_agg_rx); |
1412 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
07db2183 RR |
1413 | goto end; |
1414 | } | |
1415 | ||
1416 | /* change state and send addba resp */ | |
cee24a3e | 1417 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; |
07db2183 RR |
1418 | tid_agg_rx->dialog_token = dialog_token; |
1419 | tid_agg_rx->ssn = start_seq_num; | |
1420 | tid_agg_rx->head_seq_num = start_seq_num; | |
1421 | tid_agg_rx->buf_size = buf_size; | |
1422 | tid_agg_rx->timeout = timeout; | |
1423 | tid_agg_rx->stored_mpdu_num = 0; | |
1424 | status = WLAN_STATUS_SUCCESS; | |
1425 | end: | |
07346f81 | 1426 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1427 | |
1428 | end_no_lock: | |
d0709a65 JB |
1429 | ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid, |
1430 | dialog_token, status, 1, buf_size, timeout); | |
1431 | rcu_read_unlock(); | |
9f985b0e | 1432 | } |
f0706e82 | 1433 | |
eadc8d9e RR |
1434 | static void ieee80211_sta_process_addba_resp(struct net_device *dev, |
1435 | struct ieee80211_mgmt *mgmt, | |
1436 | size_t len) | |
1437 | { | |
1438 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1439 | struct ieee80211_hw *hw = &local->hw; | |
1440 | struct sta_info *sta; | |
1441 | u16 capab; | |
1442 | u16 tid; | |
1443 | u8 *state; | |
1444 | ||
d0709a65 JB |
1445 | rcu_read_lock(); |
1446 | ||
eadc8d9e | 1447 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1448 | if (!sta) { |
1449 | rcu_read_unlock(); | |
eadc8d9e | 1450 | return; |
d0709a65 | 1451 | } |
eadc8d9e RR |
1452 | |
1453 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1454 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1455 | ||
cee24a3e | 1456 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1457 | |
07346f81 | 1458 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1459 | |
cee24a3e | 1460 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1461 | spin_unlock_bh(&sta->lock); |
cee24a3e RR |
1462 | goto addba_resp_exit; |
1463 | } | |
1464 | ||
eadc8d9e | 1465 | if (mgmt->u.action.u.addba_resp.dialog_token != |
cee24a3e | 1466 | sta->ampdu_mlme.tid_tx[tid]->dialog_token) { |
07346f81 | 1467 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1468 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1469 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1470 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
cee24a3e | 1471 | goto addba_resp_exit; |
eadc8d9e RR |
1472 | } |
1473 | ||
cee24a3e | 1474 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); |
eadc8d9e RR |
1475 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1476 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1477 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1478 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1479 | == WLAN_STATUS_SUCCESS) { | |
eadc8d9e | 1480 | *state |= HT_ADDBA_RECEIVED_MSK; |
cee24a3e | 1481 | sta->ampdu_mlme.addba_req_num[tid] = 0; |
eadc8d9e | 1482 | |
f4ea83dd | 1483 | if (*state == HT_AGG_STATE_OPERATIONAL) |
eadc8d9e | 1484 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); |
eadc8d9e | 1485 | |
07346f81 | 1486 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 1487 | } else { |
cee24a3e | 1488 | sta->ampdu_mlme.addba_req_num[tid]++; |
eadc8d9e RR |
1489 | /* this will allow the state check in stop_BA_session */ |
1490 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1491 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1492 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, |
1493 | WLAN_BACK_INITIATOR); | |
1494 | } | |
cee24a3e RR |
1495 | |
1496 | addba_resp_exit: | |
d0709a65 | 1497 | rcu_read_unlock(); |
eadc8d9e RR |
1498 | } |
1499 | ||
1500 | void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, | |
1501 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1502 | { |
1503 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1504 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1505 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1506 | struct sk_buff *skb; | |
1507 | struct ieee80211_mgmt *mgmt; | |
1508 | u16 params; | |
1509 | ||
3acea5b6 | 1510 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
07db2183 RR |
1511 | |
1512 | if (!skb) { | |
1513 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1514 | "for delba frame\n", dev->name); | |
1515 | return; | |
1516 | } | |
1517 | ||
1518 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1519 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1520 | memset(mgmt, 0, 24); | |
1521 | memcpy(mgmt->da, da, ETH_ALEN); | |
1522 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1523 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1524 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1525 | else | |
1526 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1527 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1528 | IEEE80211_STYPE_ACTION); | |
1529 | ||
1530 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1531 | ||
1532 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1533 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1534 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1535 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1536 | ||
1537 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1538 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1539 | ||
1540 | ieee80211_sta_tx(dev, skb, 0); | |
1541 | } | |
1542 | ||
429a3805 RR |
1543 | void ieee80211_send_bar(struct net_device *dev, u8 *ra, u16 tid, u16 ssn) |
1544 | { | |
1545 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1546 | struct sk_buff *skb; | |
1547 | struct ieee80211_bar *bar; | |
1548 | u16 bar_control = 0; | |
1549 | ||
1550 | skb = dev_alloc_skb(sizeof(*bar) + local->hw.extra_tx_headroom); | |
1551 | if (!skb) { | |
1552 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
1553 | "bar frame\n", dev->name); | |
1554 | return; | |
1555 | } | |
1556 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1557 | bar = (struct ieee80211_bar *)skb_put(skb, sizeof(*bar)); | |
1558 | memset(bar, 0, sizeof(*bar)); | |
1559 | bar->frame_control = IEEE80211_FC(IEEE80211_FTYPE_CTL, | |
1560 | IEEE80211_STYPE_BACK_REQ); | |
1561 | memcpy(bar->ra, ra, ETH_ALEN); | |
1562 | memcpy(bar->ta, dev->dev_addr, ETH_ALEN); | |
1563 | bar_control |= (u16)IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL; | |
1564 | bar_control |= (u16)IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA; | |
1565 | bar_control |= (u16)(tid << 12); | |
1566 | bar->control = cpu_to_le16(bar_control); | |
1567 | bar->start_seq_num = cpu_to_le16(ssn); | |
1568 | ||
1569 | ieee80211_sta_tx(dev, skb, 0); | |
1570 | } | |
1571 | ||
07db2183 RR |
1572 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, |
1573 | u16 initiator, u16 reason) | |
1574 | { | |
1575 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1576 | struct ieee80211_hw *hw = &local->hw; | |
1577 | struct sta_info *sta; | |
b580781e | 1578 | int ret, i; |
513a1025 | 1579 | DECLARE_MAC_BUF(mac); |
07db2183 | 1580 | |
d0709a65 JB |
1581 | rcu_read_lock(); |
1582 | ||
07db2183 | 1583 | sta = sta_info_get(local, ra); |
d0709a65 JB |
1584 | if (!sta) { |
1585 | rcu_read_unlock(); | |
07db2183 | 1586 | return; |
d0709a65 | 1587 | } |
07db2183 RR |
1588 | |
1589 | /* check if TID is in operational state */ | |
07346f81 | 1590 | spin_lock_bh(&sta->lock); |
cee24a3e | 1591 | if (sta->ampdu_mlme.tid_state_rx[tid] |
07db2183 | 1592 | != HT_AGG_STATE_OPERATIONAL) { |
07346f81 | 1593 | spin_unlock_bh(&sta->lock); |
d0709a65 | 1594 | rcu_read_unlock(); |
07db2183 RR |
1595 | return; |
1596 | } | |
cee24a3e | 1597 | sta->ampdu_mlme.tid_state_rx[tid] = |
07db2183 RR |
1598 | HT_AGG_STATE_REQ_STOP_BA_MSK | |
1599 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
07346f81 | 1600 | spin_unlock_bh(&sta->lock); |
07db2183 RR |
1601 | |
1602 | /* stop HW Rx aggregation. ampdu_action existence | |
1603 | * already verified in session init so we add the BUG_ON */ | |
1604 | BUG_ON(!local->ops->ampdu_action); | |
1605 | ||
513a1025 RR |
1606 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1607 | printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", | |
1608 | print_mac(mac, ra), tid); | |
1609 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1610 | ||
07db2183 | 1611 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, |
0df3ef45 | 1612 | ra, tid, NULL); |
07db2183 RR |
1613 | if (ret) |
1614 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
f4ea83dd | 1615 | "aggregation for tid %d\n", tid); |
07db2183 RR |
1616 | |
1617 | /* shutdown timer has not expired */ | |
1618 | if (initiator != WLAN_BACK_TIMER) | |
cee24a3e | 1619 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); |
07db2183 RR |
1620 | |
1621 | /* check if this is a self generated aggregation halt */ | |
1622 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1623 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1624 | ||
1625 | /* free the reordering buffer */ | |
cee24a3e RR |
1626 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { |
1627 | if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { | |
b580781e | 1628 | /* release the reordered frames */ |
cee24a3e RR |
1629 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); |
1630 | sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; | |
1631 | sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; | |
b580781e RR |
1632 | } |
1633 | } | |
cee24a3e RR |
1634 | /* free resources */ |
1635 | kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); | |
1636 | kfree(sta->ampdu_mlme.tid_rx[tid]); | |
1637 | sta->ampdu_mlme.tid_rx[tid] = NULL; | |
1638 | sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; | |
07db2183 | 1639 | |
d0709a65 | 1640 | rcu_read_unlock(); |
07db2183 RR |
1641 | } |
1642 | ||
eadc8d9e | 1643 | |
688b88a4 RR |
1644 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1645 | struct ieee80211_mgmt *mgmt, size_t len) | |
1646 | { | |
1647 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1648 | struct sta_info *sta; | |
1649 | u16 tid, params; | |
1650 | u16 initiator; | |
1651 | DECLARE_MAC_BUF(mac); | |
1652 | ||
d0709a65 JB |
1653 | rcu_read_lock(); |
1654 | ||
688b88a4 | 1655 | sta = sta_info_get(local, mgmt->sa); |
d0709a65 JB |
1656 | if (!sta) { |
1657 | rcu_read_unlock(); | |
688b88a4 | 1658 | return; |
d0709a65 | 1659 | } |
688b88a4 RR |
1660 | |
1661 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1662 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1663 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1664 | ||
1665 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1666 | if (net_ratelimit()) | |
d92684e6 RR |
1667 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1668 | print_mac(mac, mgmt->sa), | |
2e354ed7 | 1669 | initiator ? "initiator" : "recipient", tid, |
688b88a4 RR |
1670 | mgmt->u.action.u.delba.reason_code); |
1671 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1672 | ||
1673 | if (initiator == WLAN_BACK_INITIATOR) | |
1674 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1675 | WLAN_BACK_INITIATOR, 0); | |
d92684e6 | 1676 | else { /* WLAN_BACK_RECIPIENT */ |
07346f81 | 1677 | spin_lock_bh(&sta->lock); |
cee24a3e | 1678 | sta->ampdu_mlme.tid_state_tx[tid] = |
d92684e6 | 1679 | HT_AGG_STATE_OPERATIONAL; |
07346f81 | 1680 | spin_unlock_bh(&sta->lock); |
d92684e6 RR |
1681 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, |
1682 | WLAN_BACK_RECIPIENT); | |
1683 | } | |
d0709a65 | 1684 | rcu_read_unlock(); |
688b88a4 RR |
1685 | } |
1686 | ||
eadc8d9e RR |
1687 | /* |
1688 | * After sending add Block Ack request we activated a timer until | |
1689 | * add Block Ack response will arrive from the recipient. | |
1690 | * If this timer expires sta_addba_resp_timer_expired will be executed. | |
1691 | */ | |
1692 | void sta_addba_resp_timer_expired(unsigned long data) | |
1693 | { | |
1694 | /* not an elegant detour, but there is no choice as the timer passes | |
1695 | * only one argument, and both sta_info and TID are needed, so init | |
73651ee6 | 1696 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
eadc8d9e | 1697 | * array gives the sta through container_of */ |
70d251b2 | 1698 | u16 tid = *(u8 *)data; |
eadc8d9e RR |
1699 | struct sta_info *temp_sta = container_of((void *)data, |
1700 | struct sta_info, timer_to_tid[tid]); | |
1701 | ||
1702 | struct ieee80211_local *local = temp_sta->local; | |
1703 | struct ieee80211_hw *hw = &local->hw; | |
1704 | struct sta_info *sta; | |
1705 | u8 *state; | |
1706 | ||
d0709a65 JB |
1707 | rcu_read_lock(); |
1708 | ||
eadc8d9e | 1709 | sta = sta_info_get(local, temp_sta->addr); |
d0709a65 JB |
1710 | if (!sta) { |
1711 | rcu_read_unlock(); | |
eadc8d9e | 1712 | return; |
d0709a65 | 1713 | } |
eadc8d9e | 1714 | |
cee24a3e | 1715 | state = &sta->ampdu_mlme.tid_state_tx[tid]; |
eadc8d9e | 1716 | /* check if the TID waits for addBA response */ |
07346f81 | 1717 | spin_lock_bh(&sta->lock); |
eadc8d9e | 1718 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { |
07346f81 | 1719 | spin_unlock_bh(&sta->lock); |
eadc8d9e | 1720 | *state = HT_AGG_STATE_IDLE; |
f4ea83dd | 1721 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e RR |
1722 | printk(KERN_DEBUG "timer expired on tid %d but we are not " |
1723 | "expecting addBA response there", tid); | |
f4ea83dd | 1724 | #endif |
eadc8d9e RR |
1725 | goto timer_expired_exit; |
1726 | } | |
1727 | ||
f4ea83dd | 1728 | #ifdef CONFIG_MAC80211_HT_DEBUG |
eadc8d9e | 1729 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); |
f4ea83dd | 1730 | #endif |
eadc8d9e RR |
1731 | |
1732 | /* go through the state check in stop_BA_session */ | |
1733 | *state = HT_AGG_STATE_OPERATIONAL; | |
07346f81 | 1734 | spin_unlock_bh(&sta->lock); |
eadc8d9e RR |
1735 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, |
1736 | WLAN_BACK_INITIATOR); | |
1737 | ||
1738 | timer_expired_exit: | |
d0709a65 | 1739 | rcu_read_unlock(); |
eadc8d9e RR |
1740 | } |
1741 | ||
07db2183 | 1742 | /* |
7b9d44cd RR |
1743 | * After accepting the AddBA Request we activated a timer, |
1744 | * resetting it after each frame that arrives from the originator. | |
07db2183 RR |
1745 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. |
1746 | */ | |
712590de | 1747 | static void sta_rx_agg_session_timer_expired(unsigned long data) |
07db2183 RR |
1748 | { |
1749 | /* not an elegant detour, but there is no choice as the timer passes | |
70d251b2 | 1750 | * only one argument, and various sta_info are needed here, so init |
73651ee6 | 1751 | * flow in sta_info_create gives the TID as data, while the timer_to_id |
07db2183 RR |
1752 | * array gives the sta through container_of */ |
1753 | u8 *ptid = (u8 *)data; | |
1754 | u8 *timer_to_id = ptid - *ptid; | |
1755 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1756 | timer_to_tid[0]); | |
1757 | ||
f4ea83dd | 1758 | #ifdef CONFIG_MAC80211_HT_DEBUG |
07db2183 | 1759 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); |
f4ea83dd | 1760 | #endif |
d0709a65 JB |
1761 | ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, |
1762 | (u16)*ptid, WLAN_BACK_TIMER, | |
07db2183 RR |
1763 | WLAN_REASON_QSTA_TIMEOUT); |
1764 | } | |
1765 | ||
85249e5f RR |
1766 | void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr) |
1767 | { | |
1768 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1769 | int i; | |
1770 | ||
1771 | for (i = 0; i < STA_TID_NUM; i++) { | |
1772 | ieee80211_stop_tx_ba_session(&local->hw, addr, i, | |
1773 | WLAN_BACK_INITIATOR); | |
1774 | ieee80211_sta_stop_rx_ba_session(dev, addr, i, | |
1775 | WLAN_BACK_RECIPIENT, | |
1776 | WLAN_REASON_QSTA_LEAVE_QBSS); | |
1777 | } | |
1778 | } | |
07db2183 | 1779 | |
b6623486 AK |
1780 | static void ieee80211_send_refuse_measurement_request(struct net_device *dev, |
1781 | struct ieee80211_msrment_ie *request_ie, | |
1782 | const u8 *da, const u8 *bssid, | |
1783 | u8 dialog_token) | |
1784 | { | |
1785 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1786 | struct sk_buff *skb; | |
1787 | struct ieee80211_mgmt *msr_report; | |
1788 | ||
1789 | skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom + | |
1790 | sizeof(struct ieee80211_msrment_ie)); | |
1791 | ||
1792 | if (!skb) { | |
1793 | printk(KERN_ERR "%s: failed to allocate buffer for " | |
1794 | "measurement report frame\n", dev->name); | |
1795 | return; | |
1796 | } | |
1797 | ||
1798 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1799 | msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24); | |
1800 | memset(msr_report, 0, 24); | |
1801 | memcpy(msr_report->da, da, ETH_ALEN); | |
1802 | memcpy(msr_report->sa, dev->dev_addr, ETH_ALEN); | |
1803 | memcpy(msr_report->bssid, bssid, ETH_ALEN); | |
1804 | msr_report->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1805 | IEEE80211_STYPE_ACTION); | |
1806 | ||
1807 | skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement)); | |
1808 | msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT; | |
1809 | msr_report->u.action.u.measurement.action_code = | |
1810 | WLAN_ACTION_SPCT_MSR_RPRT; | |
1811 | msr_report->u.action.u.measurement.dialog_token = dialog_token; | |
1812 | ||
1813 | msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT; | |
1814 | msr_report->u.action.u.measurement.length = | |
1815 | sizeof(struct ieee80211_msrment_ie); | |
1816 | ||
1817 | memset(&msr_report->u.action.u.measurement.msr_elem, 0, | |
1818 | sizeof(struct ieee80211_msrment_ie)); | |
1819 | msr_report->u.action.u.measurement.msr_elem.token = request_ie->token; | |
1820 | msr_report->u.action.u.measurement.msr_elem.mode |= | |
1821 | IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED; | |
1822 | msr_report->u.action.u.measurement.msr_elem.type = request_ie->type; | |
1823 | ||
1824 | ieee80211_sta_tx(dev, skb, 0); | |
1825 | } | |
1826 | ||
1827 | static void ieee80211_sta_process_measurement_req(struct net_device *dev, | |
1828 | struct ieee80211_mgmt *mgmt, | |
1829 | size_t len) | |
1830 | { | |
1831 | /* | |
1832 | * Ignoring measurement request is spec violation. | |
1833 | * Mandatory measurements must be reported optional | |
1834 | * measurements might be refused or reported incapable | |
1835 | * For now just refuse | |
1836 | * TODO: Answer basic measurement as unmeasured | |
1837 | */ | |
1838 | ieee80211_send_refuse_measurement_request(dev, | |
1839 | &mgmt->u.action.u.measurement.msr_elem, | |
1840 | mgmt->sa, mgmt->bssid, | |
1841 | mgmt->u.action.u.measurement.dialog_token); | |
1842 | } | |
1843 | ||
1844 | ||
f0706e82 JB |
1845 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1846 | struct ieee80211_if_sta *ifsta, | |
1847 | struct ieee80211_mgmt *mgmt, | |
1848 | size_t len) | |
1849 | { | |
1850 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1851 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1852 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1853 | |
1854 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
f4ea83dd | 1855 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) |
f0706e82 | 1856 | return; |
f0706e82 | 1857 | |
f4ea83dd | 1858 | if (len < 24 + 6) |
f0706e82 | 1859 | return; |
f0706e82 | 1860 | |
51fb61e7 | 1861 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1862 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 1863 | return; |
f0706e82 | 1864 | |
51fb61e7 | 1865 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f4ea83dd | 1866 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
f0706e82 | 1867 | return; |
f0706e82 JB |
1868 | |
1869 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1870 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1871 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1872 | ||
51fb61e7 | 1873 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
135a2110 JB |
1874 | /* |
1875 | * IEEE 802.11 standard does not require authentication in IBSS | |
f0706e82 JB |
1876 | * networks and most implementations do not seem to use it. |
1877 | * However, try to reply to authentication attempts if someone | |
1878 | * has actually implemented this. | |
135a2110 | 1879 | */ |
f4ea83dd | 1880 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) |
f0706e82 | 1881 | return; |
f0706e82 JB |
1882 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); |
1883 | } | |
1884 | ||
1885 | if (auth_alg != ifsta->auth_alg || | |
f4ea83dd | 1886 | auth_transaction != ifsta->auth_transaction) |
f0706e82 | 1887 | return; |
f0706e82 JB |
1888 | |
1889 | if (status_code != WLAN_STATUS_SUCCESS) { | |
f0706e82 JB |
1890 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { |
1891 | u8 algs[3]; | |
1892 | const int num_algs = ARRAY_SIZE(algs); | |
1893 | int i, pos; | |
1894 | algs[0] = algs[1] = algs[2] = 0xff; | |
1895 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1896 | algs[0] = WLAN_AUTH_OPEN; | |
1897 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1898 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1899 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1900 | algs[2] = WLAN_AUTH_LEAP; | |
1901 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1902 | pos = 0; | |
1903 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1904 | pos = 1; | |
1905 | else | |
1906 | pos = 2; | |
1907 | for (i = 0; i < num_algs; i++) { | |
1908 | pos++; | |
1909 | if (pos >= num_algs) | |
1910 | pos = 0; | |
1911 | if (algs[pos] == ifsta->auth_alg || | |
1912 | algs[pos] == 0xff) | |
1913 | continue; | |
1914 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1915 | !ieee80211_sta_wep_configured(dev)) | |
1916 | continue; | |
1917 | ifsta->auth_alg = algs[pos]; | |
f0706e82 JB |
1918 | break; |
1919 | } | |
1920 | } | |
1921 | return; | |
1922 | } | |
1923 | ||
1924 | switch (ifsta->auth_alg) { | |
1925 | case WLAN_AUTH_OPEN: | |
1926 | case WLAN_AUTH_LEAP: | |
1927 | ieee80211_auth_completed(dev, ifsta); | |
1928 | break; | |
1929 | case WLAN_AUTH_SHARED_KEY: | |
1930 | if (ifsta->auth_transaction == 4) | |
1931 | ieee80211_auth_completed(dev, ifsta); | |
1932 | else | |
1933 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1934 | break; | |
1935 | } | |
1936 | } | |
1937 | ||
1938 | ||
1939 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1940 | struct ieee80211_if_sta *ifsta, | |
1941 | struct ieee80211_mgmt *mgmt, | |
1942 | size_t len) | |
1943 | { | |
1944 | u16 reason_code; | |
0795af57 | 1945 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1946 | |
f4ea83dd | 1947 | if (len < 24 + 2) |
f0706e82 | 1948 | return; |
f0706e82 | 1949 | |
f4ea83dd | 1950 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1951 | return; |
f0706e82 JB |
1952 | |
1953 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1954 | ||
988c0f72 | 1955 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) |
f0706e82 | 1956 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
f0706e82 JB |
1957 | |
1958 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1959 | ifsta->state == IEEE80211_ASSOCIATE || | |
1960 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1961 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1962 | mod_timer(&ifsta->timer, jiffies + | |
1963 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1964 | } | |
1965 | ||
1966 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1967 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1968 | } |
1969 | ||
1970 | ||
1971 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1972 | struct ieee80211_if_sta *ifsta, | |
1973 | struct ieee80211_mgmt *mgmt, | |
1974 | size_t len) | |
1975 | { | |
1976 | u16 reason_code; | |
0795af57 | 1977 | DECLARE_MAC_BUF(mac); |
f0706e82 | 1978 | |
f4ea83dd | 1979 | if (len < 24 + 2) |
f0706e82 | 1980 | return; |
f0706e82 | 1981 | |
f4ea83dd | 1982 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN)) |
f0706e82 | 1983 | return; |
f0706e82 JB |
1984 | |
1985 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1986 | ||
d6f2da5b | 1987 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
1988 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
1989 | ||
1990 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
1991 | ifsta->state = IEEE80211_ASSOCIATE; | |
1992 | mod_timer(&ifsta->timer, jiffies + | |
1993 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1994 | } | |
1995 | ||
1996 | ieee80211_set_disassoc(dev, ifsta, 0); | |
1997 | } | |
1998 | ||
1999 | ||
471b3efd | 2000 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
2001 | struct ieee80211_if_sta *ifsta, |
2002 | struct ieee80211_mgmt *mgmt, | |
2003 | size_t len, | |
2004 | int reassoc) | |
2005 | { | |
471b3efd JB |
2006 | struct ieee80211_local *local = sdata->local; |
2007 | struct net_device *dev = sdata->dev; | |
8318d78a | 2008 | struct ieee80211_supported_band *sband; |
f0706e82 | 2009 | struct sta_info *sta; |
8318d78a | 2010 | u64 rates, basic_rates; |
f0706e82 JB |
2011 | u16 capab_info, status_code, aid; |
2012 | struct ieee802_11_elems elems; | |
471b3efd | 2013 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
2014 | u8 *pos; |
2015 | int i, j; | |
0795af57 | 2016 | DECLARE_MAC_BUF(mac); |
8318d78a | 2017 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
2018 | |
2019 | /* AssocResp and ReassocResp have identical structure, so process both | |
2020 | * of them in this function. */ | |
2021 | ||
f4ea83dd | 2022 | if (ifsta->state != IEEE80211_ASSOCIATE) |
f0706e82 | 2023 | return; |
f0706e82 | 2024 | |
f4ea83dd | 2025 | if (len < 24 + 6) |
f0706e82 | 2026 | return; |
f0706e82 | 2027 | |
f4ea83dd | 2028 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) |
f0706e82 | 2029 | return; |
f0706e82 JB |
2030 | |
2031 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
2032 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
2033 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 2034 | |
0795af57 | 2035 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 2036 | "status=%d aid=%d)\n", |
0795af57 | 2037 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 2038 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
2039 | |
2040 | if (status_code != WLAN_STATUS_SUCCESS) { | |
2041 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
2042 | dev->name, status_code); | |
8a69aa93 DD |
2043 | /* if this was a reassociation, ensure we try a "full" |
2044 | * association next time. This works around some broken APs | |
2045 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 2046 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
2047 | return; |
2048 | } | |
2049 | ||
1dd84aa2 JB |
2050 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
2051 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
2052 | "set\n", dev->name, aid); | |
2053 | aid &= ~(BIT(15) | BIT(14)); | |
2054 | ||
f0706e82 | 2055 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 2056 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
2057 | |
2058 | if (!elems.supp_rates) { | |
2059 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
2060 | dev->name); | |
2061 | return; | |
2062 | } | |
2063 | ||
2064 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
2065 | ifsta->aid = aid; | |
2066 | ifsta->ap_capab = capab_info; | |
2067 | ||
2068 | kfree(ifsta->assocresp_ies); | |
2069 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 2070 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
2071 | if (ifsta->assocresp_ies) |
2072 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
2073 | ||
d0709a65 JB |
2074 | rcu_read_lock(); |
2075 | ||
f0706e82 JB |
2076 | /* Add STA entry for the AP */ |
2077 | sta = sta_info_get(local, ifsta->bssid); | |
2078 | if (!sta) { | |
2079 | struct ieee80211_sta_bss *bss; | |
73651ee6 | 2080 | int err; |
d0709a65 | 2081 | |
73651ee6 JB |
2082 | sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); |
2083 | if (!sta) { | |
2084 | printk(KERN_DEBUG "%s: failed to alloc STA entry for" | |
2085 | " the AP\n", dev->name); | |
d0709a65 | 2086 | rcu_read_unlock(); |
f0706e82 JB |
2087 | return; |
2088 | } | |
65c107ab | 2089 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 2090 | local->hw.conf.channel->center_freq, |
cffdd30d | 2091 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 | 2092 | if (bss) { |
f0706e82 | 2093 | sta->last_signal = bss->signal; |
566bfe5a | 2094 | sta->last_qual = bss->qual; |
f0706e82 | 2095 | sta->last_noise = bss->noise; |
3e122be0 | 2096 | ieee80211_rx_bss_put(local, bss); |
f0706e82 | 2097 | } |
73651ee6 JB |
2098 | |
2099 | err = sta_info_insert(sta); | |
2100 | if (err) { | |
2101 | printk(KERN_DEBUG "%s: failed to insert STA entry for" | |
2102 | " the AP (error %d)\n", dev->name, err); | |
73651ee6 JB |
2103 | rcu_read_unlock(); |
2104 | return; | |
2105 | } | |
a61dae1f RR |
2106 | /* update new sta with its last rx activity */ |
2107 | sta->last_rx = jiffies; | |
f0706e82 JB |
2108 | } |
2109 | ||
73651ee6 JB |
2110 | /* |
2111 | * FIXME: Do we really need to update the sta_info's information here? | |
2112 | * We already know about the AP (we found it in our list) so it | |
2113 | * should already be filled with the right info, no? | |
2114 | * As is stands, all this is racy because typically we assume | |
2115 | * the information that is filled in here (except flags) doesn't | |
2116 | * change while a STA structure is alive. As such, it should move | |
2117 | * to between the sta_info_alloc() and sta_info_insert() above. | |
2118 | */ | |
2119 | ||
07346f81 JB |
2120 | set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
2121 | WLAN_STA_AUTHORIZED); | |
f0706e82 JB |
2122 | |
2123 | rates = 0; | |
8318d78a JB |
2124 | basic_rates = 0; |
2125 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2126 | ||
f0706e82 JB |
2127 | for (i = 0; i < elems.supp_rates_len; i++) { |
2128 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2129 | |
2130 | if (rate > 110) | |
2131 | have_higher_than_11mbit = true; | |
2132 | ||
2133 | for (j = 0; j < sband->n_bitrates; j++) { | |
2134 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2135 | rates |= BIT(j); |
8318d78a JB |
2136 | if (elems.supp_rates[i] & 0x80) |
2137 | basic_rates |= BIT(j); | |
2138 | } | |
f0706e82 | 2139 | } |
8318d78a | 2140 | |
f0706e82 JB |
2141 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
2142 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
2143 | |
2144 | if (rate > 110) | |
2145 | have_higher_than_11mbit = true; | |
2146 | ||
2147 | for (j = 0; j < sband->n_bitrates; j++) { | |
2148 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 2149 | rates |= BIT(j); |
8318d78a JB |
2150 | if (elems.ext_supp_rates[i] & 0x80) |
2151 | basic_rates |= BIT(j); | |
2152 | } | |
f0706e82 | 2153 | } |
8318d78a JB |
2154 | |
2155 | sta->supp_rates[local->hw.conf.channel->band] = rates; | |
2156 | sdata->basic_rates = basic_rates; | |
2157 | ||
2158 | /* cf. IEEE 802.11 9.2.12 */ | |
2159 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
2160 | have_higher_than_11mbit) | |
2161 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
2162 | else | |
2163 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 2164 | |
3434fbd3 JB |
2165 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
2166 | (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { | |
d3c990fb | 2167 | struct ieee80211_ht_bss_info bss_info; |
d3c990fb RR |
2168 | ieee80211_ht_cap_ie_to_ht_info( |
2169 | (struct ieee80211_ht_cap *) | |
2170 | elems.ht_cap_elem, &sta->ht_info); | |
2171 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2172 | (struct ieee80211_ht_addt_info *) | |
2173 | elems.ht_info_elem, &bss_info); | |
38668c05 | 2174 | ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); |
d3c990fb RR |
2175 | } |
2176 | ||
f0706e82 JB |
2177 | rate_control_rate_init(sta, local); |
2178 | ||
3434fbd3 | 2179 | if (elems.wmm_param) { |
07346f81 | 2180 | set_sta_flags(sta, WLAN_STA_WME); |
e5f98f2d | 2181 | rcu_read_unlock(); |
f0706e82 JB |
2182 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2183 | elems.wmm_param_len); | |
e5f98f2d JB |
2184 | } else |
2185 | rcu_read_unlock(); | |
f0706e82 | 2186 | |
21c0cbe7 TW |
2187 | /* set AID and assoc capability, |
2188 | * ieee80211_set_associated() will tell the driver */ | |
8318d78a | 2189 | bss_conf->aid = aid; |
21c0cbe7 | 2190 | bss_conf->assoc_capability = capab_info; |
8318d78a | 2191 | ieee80211_set_associated(dev, ifsta, 1); |
f0706e82 | 2192 | |
f0706e82 JB |
2193 | ieee80211_associated(dev, ifsta); |
2194 | } | |
2195 | ||
2196 | ||
2197 | /* Caller must hold local->sta_bss_lock */ | |
2198 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
2199 | struct ieee80211_sta_bss *bss) | |
2200 | { | |
2201 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f709fc69 | 2202 | u8 hash_idx; |
902acc78 JB |
2203 | |
2204 | if (bss_mesh_cfg(bss)) | |
2205 | hash_idx = mesh_id_hash(bss_mesh_id(bss), | |
2206 | bss_mesh_id_len(bss)); | |
f709fc69 | 2207 | else |
f709fc69 | 2208 | hash_idx = STA_HASH(bss->bssid); |
902acc78 | 2209 | |
f709fc69 LCC |
2210 | bss->hnext = local->sta_bss_hash[hash_idx]; |
2211 | local->sta_bss_hash[hash_idx] = bss; | |
f0706e82 JB |
2212 | } |
2213 | ||
2214 | ||
2215 | /* Caller must hold local->sta_bss_lock */ | |
3e122be0 | 2216 | static void __ieee80211_rx_bss_hash_del(struct ieee80211_local *local, |
f0706e82 JB |
2217 | struct ieee80211_sta_bss *bss) |
2218 | { | |
f0706e82 JB |
2219 | struct ieee80211_sta_bss *b, *prev = NULL; |
2220 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
2221 | while (b) { | |
2222 | if (b == bss) { | |
2223 | if (!prev) | |
2224 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
2225 | bss->hnext; | |
2226 | else | |
2227 | prev->hnext = bss->hnext; | |
2228 | break; | |
2229 | } | |
2230 | prev = b; | |
2231 | b = b->hnext; | |
2232 | } | |
2233 | } | |
2234 | ||
2235 | ||
2236 | static struct ieee80211_sta_bss * | |
8318d78a | 2237 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2238 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2239 | { |
2240 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2241 | struct ieee80211_sta_bss *bss; | |
2242 | ||
dd00cc48 | 2243 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
2244 | if (!bss) |
2245 | return NULL; | |
f0706e82 JB |
2246 | atomic_inc(&bss->users); |
2247 | atomic_inc(&bss->users); | |
2248 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
8318d78a | 2249 | bss->freq = freq; |
cffdd30d JL |
2250 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
2251 | memcpy(bss->ssid, ssid, ssid_len); | |
2252 | bss->ssid_len = ssid_len; | |
2253 | } | |
f0706e82 JB |
2254 | |
2255 | spin_lock_bh(&local->sta_bss_lock); | |
2256 | /* TODO: order by RSSI? */ | |
2257 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2258 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2259 | spin_unlock_bh(&local->sta_bss_lock); | |
2260 | return bss; | |
2261 | } | |
2262 | ||
f0706e82 | 2263 | static struct ieee80211_sta_bss * |
8318d78a | 2264 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 2265 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
2266 | { |
2267 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2268 | struct ieee80211_sta_bss *bss; | |
2269 | ||
2270 | spin_lock_bh(&local->sta_bss_lock); | |
2271 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
2272 | while (bss) { | |
902acc78 JB |
2273 | if (!bss_mesh_cfg(bss) && |
2274 | !memcmp(bss->bssid, bssid, ETH_ALEN) && | |
8318d78a | 2275 | bss->freq == freq && |
cffdd30d JL |
2276 | bss->ssid_len == ssid_len && |
2277 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
2278 | atomic_inc(&bss->users); |
2279 | break; | |
2280 | } | |
2281 | bss = bss->hnext; | |
2282 | } | |
2283 | spin_unlock_bh(&local->sta_bss_lock); | |
2284 | return bss; | |
2285 | } | |
2286 | ||
f709fc69 LCC |
2287 | #ifdef CONFIG_MAC80211_MESH |
2288 | static struct ieee80211_sta_bss * | |
2289 | ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
2290 | u8 *mesh_cfg, int freq) | |
2291 | { | |
2292 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2293 | struct ieee80211_sta_bss *bss; | |
2294 | ||
2295 | spin_lock_bh(&local->sta_bss_lock); | |
2296 | bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; | |
2297 | while (bss) { | |
902acc78 JB |
2298 | if (bss_mesh_cfg(bss) && |
2299 | !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && | |
f709fc69 LCC |
2300 | bss->freq == freq && |
2301 | mesh_id_len == bss->mesh_id_len && | |
2302 | (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, | |
2303 | mesh_id_len))) { | |
2304 | atomic_inc(&bss->users); | |
2305 | break; | |
2306 | } | |
2307 | bss = bss->hnext; | |
2308 | } | |
2309 | spin_unlock_bh(&local->sta_bss_lock); | |
2310 | return bss; | |
2311 | } | |
2312 | ||
2313 | static struct ieee80211_sta_bss * | |
2314 | ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, | |
05e5e883 | 2315 | u8 *mesh_cfg, int mesh_config_len, int freq) |
f709fc69 LCC |
2316 | { |
2317 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2318 | struct ieee80211_sta_bss *bss; | |
2319 | ||
05e5e883 LCC |
2320 | if (mesh_config_len != MESH_CFG_LEN) |
2321 | return NULL; | |
2322 | ||
f709fc69 LCC |
2323 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
2324 | if (!bss) | |
2325 | return NULL; | |
2326 | ||
24736701 | 2327 | bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); |
f709fc69 LCC |
2328 | if (!bss->mesh_cfg) { |
2329 | kfree(bss); | |
2330 | return NULL; | |
2331 | } | |
2332 | ||
2333 | if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { | |
2334 | bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); | |
2335 | if (!bss->mesh_id) { | |
2336 | kfree(bss->mesh_cfg); | |
2337 | kfree(bss); | |
2338 | return NULL; | |
2339 | } | |
2340 | memcpy(bss->mesh_id, mesh_id, mesh_id_len); | |
2341 | } | |
2342 | ||
2343 | atomic_inc(&bss->users); | |
2344 | atomic_inc(&bss->users); | |
24736701 | 2345 | memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); |
f709fc69 LCC |
2346 | bss->mesh_id_len = mesh_id_len; |
2347 | bss->freq = freq; | |
2348 | spin_lock_bh(&local->sta_bss_lock); | |
2349 | /* TODO: order by RSSI? */ | |
2350 | list_add_tail(&bss->list, &local->sta_bss_list); | |
2351 | __ieee80211_rx_bss_hash_add(dev, bss); | |
2352 | spin_unlock_bh(&local->sta_bss_lock); | |
2353 | return bss; | |
2354 | } | |
2355 | #endif | |
f0706e82 JB |
2356 | |
2357 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
2358 | { | |
2359 | kfree(bss->wpa_ie); | |
2360 | kfree(bss->rsn_ie); | |
2361 | kfree(bss->wmm_ie); | |
c7153508 | 2362 | kfree(bss->ht_ie); |
9306102e | 2363 | kfree(bss->ht_add_ie); |
902acc78 JB |
2364 | kfree(bss_mesh_id(bss)); |
2365 | kfree(bss_mesh_cfg(bss)); | |
f0706e82 JB |
2366 | kfree(bss); |
2367 | } | |
2368 | ||
2369 | ||
3e122be0 | 2370 | static void ieee80211_rx_bss_put(struct ieee80211_local *local, |
f0706e82 JB |
2371 | struct ieee80211_sta_bss *bss) |
2372 | { | |
1ebebea8 PE |
2373 | local_bh_disable(); |
2374 | if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) { | |
2375 | local_bh_enable(); | |
f0706e82 | 2376 | return; |
1ebebea8 | 2377 | } |
f0706e82 | 2378 | |
3e122be0 | 2379 | __ieee80211_rx_bss_hash_del(local, bss); |
f0706e82 JB |
2380 | list_del(&bss->list); |
2381 | spin_unlock_bh(&local->sta_bss_lock); | |
2382 | ieee80211_rx_bss_free(bss); | |
2383 | } | |
2384 | ||
2385 | ||
3e122be0 | 2386 | void ieee80211_rx_bss_list_init(struct ieee80211_local *local) |
f0706e82 | 2387 | { |
f0706e82 JB |
2388 | spin_lock_init(&local->sta_bss_lock); |
2389 | INIT_LIST_HEAD(&local->sta_bss_list); | |
2390 | } | |
2391 | ||
2392 | ||
3e122be0 | 2393 | void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local) |
f0706e82 | 2394 | { |
f0706e82 JB |
2395 | struct ieee80211_sta_bss *bss, *tmp; |
2396 | ||
2397 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
3e122be0 | 2398 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
2399 | } |
2400 | ||
2401 | ||
a607268a BR |
2402 | static int ieee80211_sta_join_ibss(struct net_device *dev, |
2403 | struct ieee80211_if_sta *ifsta, | |
2404 | struct ieee80211_sta_bss *bss) | |
2405 | { | |
2406 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2407 | int res, rates, i, j; | |
2408 | struct sk_buff *skb; | |
2409 | struct ieee80211_mgmt *mgmt; | |
a607268a BR |
2410 | u8 *pos; |
2411 | struct ieee80211_sub_if_data *sdata; | |
2412 | struct ieee80211_supported_band *sband; | |
507b06d0 | 2413 | union iwreq_data wrqu; |
a607268a BR |
2414 | |
2415 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2416 | ||
9dd6aed0 JB |
2417 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
2418 | ||
a607268a | 2419 | /* Remove possible STA entries from other IBSS networks. */ |
dc6676b7 | 2420 | sta_info_flush_delayed(sdata); |
a607268a BR |
2421 | |
2422 | if (local->ops->reset_tsf) { | |
2423 | /* Reset own TSF to allow time synchronization work. */ | |
2424 | local->ops->reset_tsf(local_to_hw(local)); | |
2425 | } | |
2426 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
9d139c81 | 2427 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); |
a607268a BR |
2428 | if (res) |
2429 | return res; | |
2430 | ||
2431 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2432 | ||
a607268a BR |
2433 | sdata->drop_unencrypted = bss->capability & |
2434 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2435 | ||
be038b37 | 2436 | res = ieee80211_set_freq(dev, bss->freq); |
a607268a | 2437 | |
be038b37 AK |
2438 | if (res) |
2439 | return res; | |
a607268a | 2440 | |
9d139c81 | 2441 | /* Build IBSS probe response */ |
a607268a | 2442 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); |
9d139c81 | 2443 | if (skb) { |
a607268a BR |
2444 | skb_reserve(skb, local->hw.extra_tx_headroom); |
2445 | ||
2446 | mgmt = (struct ieee80211_mgmt *) | |
2447 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2448 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2449 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
9d139c81 | 2450 | IEEE80211_STYPE_PROBE_RESP); |
a607268a BR |
2451 | memset(mgmt->da, 0xff, ETH_ALEN); |
2452 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2453 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2454 | mgmt->u.beacon.beacon_int = | |
2455 | cpu_to_le16(local->hw.conf.beacon_int); | |
4faeb860 | 2456 | mgmt->u.beacon.timestamp = cpu_to_le64(bss->timestamp); |
a607268a BR |
2457 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); |
2458 | ||
2459 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2460 | *pos++ = WLAN_EID_SSID; | |
2461 | *pos++ = ifsta->ssid_len; | |
2462 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2463 | ||
2464 | rates = bss->supp_rates_len; | |
2465 | if (rates > 8) | |
2466 | rates = 8; | |
2467 | pos = skb_put(skb, 2 + rates); | |
2468 | *pos++ = WLAN_EID_SUPP_RATES; | |
2469 | *pos++ = rates; | |
2470 | memcpy(pos, bss->supp_rates, rates); | |
2471 | ||
2472 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
2473 | pos = skb_put(skb, 2 + 1); | |
2474 | *pos++ = WLAN_EID_DS_PARAMS; | |
2475 | *pos++ = 1; | |
2476 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
2477 | } | |
2478 | ||
2479 | pos = skb_put(skb, 2 + 2); | |
2480 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2481 | *pos++ = 2; | |
2482 | /* FIX: set ATIM window based on scan results */ | |
2483 | *pos++ = 0; | |
2484 | *pos++ = 0; | |
2485 | ||
2486 | if (bss->supp_rates_len > 8) { | |
2487 | rates = bss->supp_rates_len - 8; | |
2488 | pos = skb_put(skb, 2 + rates); | |
2489 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2490 | *pos++ = rates; | |
2491 | memcpy(pos, &bss->supp_rates[8], rates); | |
2492 | } | |
2493 | ||
9d139c81 | 2494 | ifsta->probe_resp = skb; |
e039fa4a | 2495 | |
9d139c81 JB |
2496 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
2497 | } | |
a607268a | 2498 | |
9d139c81 JB |
2499 | rates = 0; |
2500 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2501 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2502 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
2503 | for (j = 0; j < sband->n_bitrates; j++) | |
2504 | if (sband->bitrates[j].bitrate == bitrate) | |
2505 | rates |= BIT(j); | |
a607268a | 2506 | } |
9d139c81 JB |
2507 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; |
2508 | ||
2509 | ieee80211_sta_def_wmm_params(dev, bss, 1); | |
a607268a BR |
2510 | |
2511 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2512 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2513 | ||
507b06d0 DW |
2514 | memset(&wrqu, 0, sizeof(wrqu)); |
2515 | memcpy(wrqu.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
2516 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
a607268a BR |
2517 | |
2518 | return res; | |
2519 | } | |
2520 | ||
f709fc69 LCC |
2521 | u64 ieee80211_sta_get_rates(struct ieee80211_local *local, |
2522 | struct ieee802_11_elems *elems, | |
2523 | enum ieee80211_band band) | |
2524 | { | |
2525 | struct ieee80211_supported_band *sband; | |
2526 | struct ieee80211_rate *bitrates; | |
2527 | size_t num_rates; | |
2528 | u64 supp_rates; | |
2529 | int i, j; | |
2530 | sband = local->hw.wiphy->bands[band]; | |
2531 | ||
2532 | if (!sband) { | |
2533 | WARN_ON(1); | |
2534 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2535 | } | |
2536 | ||
2537 | bitrates = sband->bitrates; | |
2538 | num_rates = sband->n_bitrates; | |
2539 | supp_rates = 0; | |
2540 | for (i = 0; i < elems->supp_rates_len + | |
2541 | elems->ext_supp_rates_len; i++) { | |
2542 | u8 rate = 0; | |
2543 | int own_rate; | |
2544 | if (i < elems->supp_rates_len) | |
2545 | rate = elems->supp_rates[i]; | |
2546 | else if (elems->ext_supp_rates) | |
2547 | rate = elems->ext_supp_rates | |
2548 | [i - elems->supp_rates_len]; | |
2549 | own_rate = 5 * (rate & 0x7f); | |
2550 | for (j = 0; j < num_rates; j++) | |
2551 | if (bitrates[j].bitrate == own_rate) | |
2552 | supp_rates |= BIT(j); | |
2553 | } | |
2554 | return supp_rates; | |
2555 | } | |
2556 | ||
a607268a | 2557 | |
f0706e82 JB |
2558 | static void ieee80211_rx_bss_info(struct net_device *dev, |
2559 | struct ieee80211_mgmt *mgmt, | |
2560 | size_t len, | |
2561 | struct ieee80211_rx_status *rx_status, | |
ae6a44e3 | 2562 | struct ieee802_11_elems *elems, |
f0706e82 JB |
2563 | int beacon) |
2564 | { | |
2565 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 2566 | int freq, clen; |
f0706e82 JB |
2567 | struct ieee80211_sta_bss *bss; |
2568 | struct sta_info *sta; | |
2569 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
9d9bf77d | 2570 | u64 beacon_timestamp, rx_timestamp; |
fab7d4a2 | 2571 | struct ieee80211_channel *channel; |
0795af57 JP |
2572 | DECLARE_MAC_BUF(mac); |
2573 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2574 | |
2575 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
2576 | return; /* ignore ProbeResp to foreign address */ | |
2577 | ||
9d9bf77d | 2578 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
f0706e82 | 2579 | |
ae6a44e3 EK |
2580 | if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id && |
2581 | elems->mesh_config && mesh_matches_local(elems, dev)) { | |
2582 | u64 rates = ieee80211_sta_get_rates(local, elems, | |
902acc78 JB |
2583 | rx_status->band); |
2584 | ||
2585 | mesh_neighbour_update(mgmt->sa, rates, dev, | |
ae6a44e3 | 2586 | mesh_peer_accepts_plinks(elems, dev)); |
902acc78 | 2587 | } |
f709fc69 | 2588 | |
d0709a65 JB |
2589 | rcu_read_lock(); |
2590 | ||
ae6a44e3 | 2591 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates && |
f0706e82 JB |
2592 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
2593 | (sta = sta_info_get(local, mgmt->sa))) { | |
f709fc69 | 2594 | u64 prev_rates; |
ae6a44e3 | 2595 | u64 supp_rates = ieee80211_sta_get_rates(local, elems, |
f709fc69 | 2596 | rx_status->band); |
f0706e82 | 2597 | |
8318d78a JB |
2598 | prev_rates = sta->supp_rates[rx_status->band]; |
2599 | sta->supp_rates[rx_status->band] &= supp_rates; | |
2600 | if (sta->supp_rates[rx_status->band] == 0) { | |
f0706e82 JB |
2601 | /* No matching rates - this should not really happen. |
2602 | * Make sure that at least one rate is marked | |
2603 | * supported to avoid issues with TX rate ctrl. */ | |
8318d78a JB |
2604 | sta->supp_rates[rx_status->band] = |
2605 | sdata->u.sta.supp_rates_bits[rx_status->band]; | |
f0706e82 | 2606 | } |
f0706e82 JB |
2607 | } |
2608 | ||
d0709a65 JB |
2609 | rcu_read_unlock(); |
2610 | ||
ae6a44e3 EK |
2611 | if (elems->ds_params && elems->ds_params_len == 1) |
2612 | freq = ieee80211_channel_to_frequency(elems->ds_params[0]); | |
f0706e82 | 2613 | else |
8318d78a | 2614 | freq = rx_status->freq; |
f0706e82 | 2615 | |
fab7d4a2 JB |
2616 | channel = ieee80211_get_channel(local->hw.wiphy, freq); |
2617 | ||
2618 | if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) | |
2619 | return; | |
2620 | ||
f709fc69 | 2621 | #ifdef CONFIG_MAC80211_MESH |
ae6a44e3 EK |
2622 | if (elems->mesh_config) |
2623 | bss = ieee80211_rx_mesh_bss_get(dev, elems->mesh_id, | |
2624 | elems->mesh_id_len, elems->mesh_config, freq); | |
f709fc69 LCC |
2625 | else |
2626 | #endif | |
2627 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, | |
ae6a44e3 | 2628 | elems->ssid, elems->ssid_len); |
f709fc69 LCC |
2629 | if (!bss) { |
2630 | #ifdef CONFIG_MAC80211_MESH | |
ae6a44e3 EK |
2631 | if (elems->mesh_config) |
2632 | bss = ieee80211_rx_mesh_bss_add(dev, elems->mesh_id, | |
2633 | elems->mesh_id_len, elems->mesh_config, | |
2634 | elems->mesh_config_len, freq); | |
f709fc69 LCC |
2635 | else |
2636 | #endif | |
2637 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, | |
ae6a44e3 | 2638 | elems->ssid, elems->ssid_len); |
f0706e82 JB |
2639 | if (!bss) |
2640 | return; | |
2641 | } else { | |
2642 | #if 0 | |
2643 | /* TODO: order by RSSI? */ | |
2644 | spin_lock_bh(&local->sta_bss_lock); | |
2645 | list_move_tail(&bss->list, &local->sta_bss_list); | |
2646 | spin_unlock_bh(&local->sta_bss_lock); | |
2647 | #endif | |
2648 | } | |
2649 | ||
5628221c | 2650 | /* save the ERP value so that it is available at association time */ |
ae6a44e3 EK |
2651 | if (elems->erp_info && elems->erp_info_len >= 1) { |
2652 | bss->erp_value = elems->erp_info[0]; | |
5628221c DD |
2653 | bss->has_erp_value = 1; |
2654 | } | |
2655 | ||
ae6a44e3 EK |
2656 | if (elems->ht_cap_elem && |
2657 | (!bss->ht_ie || bss->ht_ie_len != elems->ht_cap_elem_len || | |
2658 | memcmp(bss->ht_ie, elems->ht_cap_elem, elems->ht_cap_elem_len))) { | |
30b89b0f | 2659 | kfree(bss->ht_ie); |
ae6a44e3 | 2660 | bss->ht_ie = kmalloc(elems->ht_cap_elem_len + 2, GFP_ATOMIC); |
30b89b0f | 2661 | if (bss->ht_ie) { |
ae6a44e3 EK |
2662 | memcpy(bss->ht_ie, elems->ht_cap_elem - 2, |
2663 | elems->ht_cap_elem_len + 2); | |
2664 | bss->ht_ie_len = elems->ht_cap_elem_len + 2; | |
30b89b0f JB |
2665 | } else |
2666 | bss->ht_ie_len = 0; | |
ae6a44e3 | 2667 | } else if (!elems->ht_cap_elem && bss->ht_ie) { |
30b89b0f JB |
2668 | kfree(bss->ht_ie); |
2669 | bss->ht_ie = NULL; | |
2670 | bss->ht_ie_len = 0; | |
2671 | } | |
2672 | ||
ae6a44e3 | 2673 | if (elems->ht_info_elem && |
9306102e | 2674 | (!bss->ht_add_ie || |
ae6a44e3 EK |
2675 | bss->ht_add_ie_len != elems->ht_info_elem_len || |
2676 | memcmp(bss->ht_add_ie, elems->ht_info_elem, | |
2677 | elems->ht_info_elem_len))) { | |
9306102e EG |
2678 | kfree(bss->ht_add_ie); |
2679 | bss->ht_add_ie = | |
ae6a44e3 | 2680 | kmalloc(elems->ht_info_elem_len + 2, GFP_ATOMIC); |
9306102e | 2681 | if (bss->ht_add_ie) { |
ae6a44e3 EK |
2682 | memcpy(bss->ht_add_ie, elems->ht_info_elem - 2, |
2683 | elems->ht_info_elem_len + 2); | |
2684 | bss->ht_add_ie_len = elems->ht_info_elem_len + 2; | |
9306102e EG |
2685 | } else |
2686 | bss->ht_add_ie_len = 0; | |
ae6a44e3 | 2687 | } else if (!elems->ht_info_elem && bss->ht_add_ie) { |
9306102e EG |
2688 | kfree(bss->ht_add_ie); |
2689 | bss->ht_add_ie = NULL; | |
2690 | bss->ht_add_ie_len = 0; | |
2691 | } | |
2692 | ||
f0706e82 JB |
2693 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
2694 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 | 2695 | |
98f7dfd8 EG |
2696 | if (elems->tim) { |
2697 | struct ieee80211_tim_ie *tim_ie = | |
2698 | (struct ieee80211_tim_ie *)elems->tim; | |
2699 | bss->dtim_period = tim_ie->dtim_period; | |
2700 | } | |
2701 | ||
2702 | /* set default value for buggy APs */ | |
2703 | if (!elems->tim || bss->dtim_period == 0) | |
2704 | bss->dtim_period = 1; | |
2705 | ||
f0706e82 | 2706 | bss->supp_rates_len = 0; |
ae6a44e3 | 2707 | if (elems->supp_rates) { |
f0706e82 | 2708 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
ae6a44e3 EK |
2709 | if (clen > elems->supp_rates_len) |
2710 | clen = elems->supp_rates_len; | |
2711 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates, | |
f0706e82 JB |
2712 | clen); |
2713 | bss->supp_rates_len += clen; | |
2714 | } | |
ae6a44e3 | 2715 | if (elems->ext_supp_rates) { |
f0706e82 | 2716 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; |
ae6a44e3 EK |
2717 | if (clen > elems->ext_supp_rates_len) |
2718 | clen = elems->ext_supp_rates_len; | |
f0706e82 | 2719 | memcpy(&bss->supp_rates[bss->supp_rates_len], |
ae6a44e3 | 2720 | elems->ext_supp_rates, clen); |
f0706e82 JB |
2721 | bss->supp_rates_len += clen; |
2722 | } | |
2723 | ||
30b89b0f JB |
2724 | bss->band = rx_status->band; |
2725 | ||
2726 | bss->timestamp = beacon_timestamp; | |
2727 | bss->last_update = jiffies; | |
30b89b0f JB |
2728 | bss->signal = rx_status->signal; |
2729 | bss->noise = rx_status->noise; | |
566bfe5a | 2730 | bss->qual = rx_status->qual; |
30b89b0f JB |
2731 | if (!beacon && !bss->probe_resp) |
2732 | bss->probe_resp = true; | |
2733 | ||
2734 | /* | |
2735 | * In STA mode, the remaining parameters should not be overridden | |
2736 | * by beacons because they're not necessarily accurate there. | |
2737 | */ | |
2738 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
2739 | bss->probe_resp && beacon) { | |
3e122be0 | 2740 | ieee80211_rx_bss_put(local, bss); |
30b89b0f JB |
2741 | return; |
2742 | } | |
2743 | ||
ae6a44e3 EK |
2744 | if (elems->wpa && |
2745 | (!bss->wpa_ie || bss->wpa_ie_len != elems->wpa_len || | |
2746 | memcmp(bss->wpa_ie, elems->wpa, elems->wpa_len))) { | |
f0706e82 | 2747 | kfree(bss->wpa_ie); |
ae6a44e3 | 2748 | bss->wpa_ie = kmalloc(elems->wpa_len + 2, GFP_ATOMIC); |
f0706e82 | 2749 | if (bss->wpa_ie) { |
ae6a44e3 EK |
2750 | memcpy(bss->wpa_ie, elems->wpa - 2, elems->wpa_len + 2); |
2751 | bss->wpa_ie_len = elems->wpa_len + 2; | |
f0706e82 JB |
2752 | } else |
2753 | bss->wpa_ie_len = 0; | |
ae6a44e3 | 2754 | } else if (!elems->wpa && bss->wpa_ie) { |
f0706e82 JB |
2755 | kfree(bss->wpa_ie); |
2756 | bss->wpa_ie = NULL; | |
2757 | bss->wpa_ie_len = 0; | |
2758 | } | |
2759 | ||
ae6a44e3 EK |
2760 | if (elems->rsn && |
2761 | (!bss->rsn_ie || bss->rsn_ie_len != elems->rsn_len || | |
2762 | memcmp(bss->rsn_ie, elems->rsn, elems->rsn_len))) { | |
f0706e82 | 2763 | kfree(bss->rsn_ie); |
ae6a44e3 | 2764 | bss->rsn_ie = kmalloc(elems->rsn_len + 2, GFP_ATOMIC); |
f0706e82 | 2765 | if (bss->rsn_ie) { |
ae6a44e3 EK |
2766 | memcpy(bss->rsn_ie, elems->rsn - 2, elems->rsn_len + 2); |
2767 | bss->rsn_ie_len = elems->rsn_len + 2; | |
f0706e82 JB |
2768 | } else |
2769 | bss->rsn_ie_len = 0; | |
ae6a44e3 | 2770 | } else if (!elems->rsn && bss->rsn_ie) { |
f0706e82 JB |
2771 | kfree(bss->rsn_ie); |
2772 | bss->rsn_ie = NULL; | |
2773 | bss->rsn_ie_len = 0; | |
2774 | } | |
2775 | ||
30b89b0f JB |
2776 | /* |
2777 | * Cf. | |
2778 | * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC | |
2779 | * | |
2780 | * quoting: | |
2781 | * | |
2782 | * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia | |
2783 | * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi | |
2784 | * Alliance (September 1, 2004) is incorporated by reference herein. | |
2785 | * The inclusion of the WMM Parameters in probe responses and | |
2786 | * association responses is mandatory for WMM enabled networks. The | |
2787 | * inclusion of the WMM Parameters in beacons, however, is optional. | |
2788 | */ | |
2789 | ||
ae6a44e3 EK |
2790 | if (elems->wmm_param && |
2791 | (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_param_len || | |
2792 | memcmp(bss->wmm_ie, elems->wmm_param, elems->wmm_param_len))) { | |
f0706e82 | 2793 | kfree(bss->wmm_ie); |
ae6a44e3 | 2794 | bss->wmm_ie = kmalloc(elems->wmm_param_len + 2, GFP_ATOMIC); |
f0706e82 | 2795 | if (bss->wmm_ie) { |
ae6a44e3 EK |
2796 | memcpy(bss->wmm_ie, elems->wmm_param - 2, |
2797 | elems->wmm_param_len + 2); | |
2798 | bss->wmm_ie_len = elems->wmm_param_len + 2; | |
f0706e82 JB |
2799 | } else |
2800 | bss->wmm_ie_len = 0; | |
ae6a44e3 EK |
2801 | } else if (elems->wmm_info && |
2802 | (!bss->wmm_ie || bss->wmm_ie_len != elems->wmm_info_len || | |
2803 | memcmp(bss->wmm_ie, elems->wmm_info, | |
2804 | elems->wmm_info_len))) { | |
a46f025d AK |
2805 | /* As for certain AP's Fifth bit is not set in WMM IE in |
2806 | * beacon frames.So while parsing the beacon frame the | |
2807 | * wmm_info structure is used instead of wmm_param. | |
2808 | * wmm_info structure was never used to set bss->wmm_ie. | |
2809 | * This code fixes this problem by copying the WME | |
2810 | * information from wmm_info to bss->wmm_ie and enabling | |
2811 | * n-band association. | |
2812 | */ | |
2813 | kfree(bss->wmm_ie); | |
ae6a44e3 | 2814 | bss->wmm_ie = kmalloc(elems->wmm_info_len + 2, GFP_ATOMIC); |
a46f025d | 2815 | if (bss->wmm_ie) { |
ae6a44e3 EK |
2816 | memcpy(bss->wmm_ie, elems->wmm_info - 2, |
2817 | elems->wmm_info_len + 2); | |
2818 | bss->wmm_ie_len = elems->wmm_info_len + 2; | |
a46f025d AK |
2819 | } else |
2820 | bss->wmm_ie_len = 0; | |
ae6a44e3 | 2821 | } else if (!elems->wmm_param && !elems->wmm_info && bss->wmm_ie) { |
f0706e82 JB |
2822 | kfree(bss->wmm_ie); |
2823 | bss->wmm_ie = NULL; | |
2824 | bss->wmm_ie_len = 0; | |
2825 | } | |
9d9bf77d BR |
2826 | |
2827 | /* check if we need to merge IBSS */ | |
2828 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
2829 | !local->sta_sw_scanning && !local->sta_hw_scanning && | |
fba4a1e6 | 2830 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d | 2831 | bss->freq == local->oper_channel->center_freq && |
ae6a44e3 EK |
2832 | elems->ssid_len == sdata->u.sta.ssid_len && |
2833 | memcmp(elems->ssid, sdata->u.sta.ssid, | |
2834 | sdata->u.sta.ssid_len) == 0) { | |
9d9bf77d BR |
2835 | if (rx_status->flag & RX_FLAG_TSFT) { |
2836 | /* in order for correct IBSS merging we need mactime | |
2837 | * | |
2838 | * since mactime is defined as the time the first data | |
2839 | * symbol of the frame hits the PHY, and the timestamp | |
2840 | * of the beacon is defined as "the time that the data | |
2841 | * symbol containing the first bit of the timestamp is | |
2842 | * transmitted to the PHY plus the transmitting STA’s | |
2843 | * delays through its local PHY from the MAC-PHY | |
2844 | * interface to its interface with the WM" | |
2845 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2846 | * the receiver - we have to take into account the | |
2847 | * offset between the two. | |
2848 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2849 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2850 | */ | |
2851 | int rate = local->hw.wiphy->bands[rx_status->band]-> | |
2852 | bitrates[rx_status->rate_idx].bitrate; | |
2853 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2854 | } else if (local && local->ops && local->ops->get_tsf) | |
2855 | /* second best option: get current TSF */ | |
2856 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2857 | else | |
2858 | /* can't merge without knowing the TSF */ | |
2859 | rx_timestamp = -1LLU; | |
2860 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2861 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2862 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2863 | print_mac(mac, mgmt->sa), | |
2864 | print_mac(mac2, mgmt->bssid), | |
2865 | (unsigned long long)rx_timestamp, | |
2866 | (unsigned long long)beacon_timestamp, | |
2867 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2868 | jiffies); | |
2869 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2870 | if (beacon_timestamp > rx_timestamp) { | |
fba4a1e6 | 2871 | #ifndef CONFIG_MAC80211_IBSS_DEBUG |
f4ea83dd JB |
2872 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2873 | "local TSF - IBSS merge with BSSID %s\n", | |
2874 | dev->name, print_mac(mac, mgmt->bssid)); | |
fba4a1e6 | 2875 | #endif |
9d9bf77d BR |
2876 | ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); |
2877 | ieee80211_ibss_add_sta(dev, NULL, | |
87291c02 VK |
2878 | mgmt->bssid, mgmt->sa, |
2879 | BIT(rx_status->rate_idx)); | |
9d9bf77d BR |
2880 | } |
2881 | } | |
2882 | ||
3e122be0 | 2883 | ieee80211_rx_bss_put(local, bss); |
f0706e82 JB |
2884 | } |
2885 | ||
2886 | ||
2887 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2888 | struct ieee80211_mgmt *mgmt, | |
2889 | size_t len, | |
2890 | struct ieee80211_rx_status *rx_status) | |
2891 | { | |
ae6a44e3 EK |
2892 | size_t baselen; |
2893 | struct ieee802_11_elems elems; | |
2894 | ||
2895 | baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; | |
2896 | if (baselen > len) | |
2897 | return; | |
2898 | ||
2899 | ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, | |
2900 | &elems); | |
2901 | ||
2902 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, &elems, 0); | |
f0706e82 JB |
2903 | } |
2904 | ||
2905 | ||
2906 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2907 | struct ieee80211_mgmt *mgmt, | |
2908 | size_t len, | |
2909 | struct ieee80211_rx_status *rx_status) | |
2910 | { | |
f0706e82 JB |
2911 | struct ieee80211_sub_if_data *sdata; |
2912 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
2913 | size_t baselen; |
2914 | struct ieee802_11_elems elems; | |
d3c990fb RR |
2915 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
2916 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 2917 | u32 changed = 0; |
f0706e82 | 2918 | |
ae6a44e3 EK |
2919 | /* Process beacon from the current BSS */ |
2920 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2921 | if (baselen > len) | |
2922 | return; | |
2923 | ||
2924 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); | |
2925 | ||
2926 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, &elems, 1); | |
f0706e82 JB |
2927 | |
2928 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
51fb61e7 | 2929 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2930 | return; |
2931 | ifsta = &sdata->u.sta; | |
2932 | ||
d6f2da5b | 2933 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
2934 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
2935 | return; | |
2936 | ||
3434fbd3 JB |
2937 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2938 | elems.wmm_param_len); | |
d18ef29f RC |
2939 | |
2940 | /* Do not send changes to driver if we are scanning. This removes | |
2941 | * requirement that driver's bss_info_changed function needs to be | |
2942 | * atomic. */ | |
2943 | if (local->sta_sw_scanning || local->sta_hw_scanning) | |
2944 | return; | |
2945 | ||
5628221c | 2946 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2947 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
50c4afb9 JL |
2948 | else { |
2949 | u16 capab = le16_to_cpu(mgmt->u.beacon.capab_info); | |
2950 | changed |= ieee80211_handle_protect_preamb(sdata, false, | |
2951 | (capab & WLAN_CAPABILITY_SHORT_PREAMBLE) != 0); | |
2952 | } | |
f0706e82 | 2953 | |
d3c990fb | 2954 | if (elems.ht_cap_elem && elems.ht_info_elem && |
38668c05 | 2955 | elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { |
d3c990fb RR |
2956 | struct ieee80211_ht_bss_info bss_info; |
2957 | ||
2958 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2959 | (struct ieee80211_ht_addt_info *) | |
2960 | elems.ht_info_elem, &bss_info); | |
38668c05 TW |
2961 | changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, |
2962 | &bss_info); | |
d3c990fb RR |
2963 | } |
2964 | ||
471b3efd | 2965 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
2966 | } |
2967 | ||
2968 | ||
2969 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
2970 | struct ieee80211_if_sta *ifsta, | |
2971 | struct ieee80211_mgmt *mgmt, | |
2972 | size_t len, | |
2973 | struct ieee80211_rx_status *rx_status) | |
2974 | { | |
2975 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2976 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2977 | int tx_last_beacon; | |
2978 | struct sk_buff *skb; | |
2979 | struct ieee80211_mgmt *resp; | |
2980 | u8 *pos, *end; | |
0795af57 JP |
2981 | DECLARE_MAC_BUF(mac); |
2982 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2983 | DECLARE_MAC_BUF(mac2); | |
2984 | DECLARE_MAC_BUF(mac3); | |
2985 | #endif | |
f0706e82 | 2986 | |
51fb61e7 | 2987 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
2988 | ifsta->state != IEEE80211_IBSS_JOINED || |
2989 | len < 24 + 2 || !ifsta->probe_resp) | |
2990 | return; | |
2991 | ||
2992 | if (local->ops->tx_last_beacon) | |
2993 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2994 | else | |
2995 | tx_last_beacon = 1; | |
2996 | ||
2997 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2998 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2999 | "%s (tx_last_beacon=%d)\n", | |
3000 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
3001 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
3002 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3003 | ||
3004 | if (!tx_last_beacon) | |
3005 | return; | |
3006 | ||
3007 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
3008 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
3009 | return; | |
3010 | ||
3011 | end = ((u8 *) mgmt) + len; | |
3012 | pos = mgmt->u.probe_req.variable; | |
3013 | if (pos[0] != WLAN_EID_SSID || | |
3014 | pos + 2 + pos[1] > end) { | |
f4ea83dd JB |
3015 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
3016 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
3017 | "from %s\n", | |
3018 | dev->name, print_mac(mac, mgmt->sa)); | |
3019 | #endif | |
f0706e82 JB |
3020 | return; |
3021 | } | |
3022 | if (pos[1] != 0 && | |
3023 | (pos[1] != ifsta->ssid_len || | |
3024 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
3025 | /* Ignore ProbeReq for foreign SSID */ | |
3026 | return; | |
3027 | } | |
3028 | ||
3029 | /* Reply with ProbeResp */ | |
0ec0b7ac | 3030 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
3031 | if (!skb) |
3032 | return; | |
3033 | ||
3034 | resp = (struct ieee80211_mgmt *) skb->data; | |
3035 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
3036 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3037 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
3038 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
3039 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3040 | ieee80211_sta_tx(dev, skb, 0); | |
3041 | } | |
3042 | ||
4e20cb29 JB |
3043 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
3044 | struct ieee80211_if_sta *ifsta, | |
3045 | struct ieee80211_mgmt *mgmt, | |
f709fc69 LCC |
3046 | size_t len, |
3047 | struct ieee80211_rx_status *rx_status) | |
9f985b0e | 3048 | { |
f709fc69 | 3049 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
b6623486 | 3050 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f709fc69 | 3051 | |
9f985b0e RR |
3052 | if (len < IEEE80211_MIN_ACTION_SIZE) |
3053 | return; | |
3054 | ||
3055 | switch (mgmt->u.action.category) { | |
b6623486 AK |
3056 | case WLAN_CATEGORY_SPECTRUM_MGMT: |
3057 | if (local->hw.conf.channel->band != IEEE80211_BAND_5GHZ) | |
3058 | break; | |
3059 | switch (mgmt->u.action.u.chan_switch.action_code) { | |
3060 | case WLAN_ACTION_SPCT_MSR_REQ: | |
3061 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3062 | sizeof(mgmt->u.action.u.measurement))) | |
3063 | break; | |
3064 | ieee80211_sta_process_measurement_req(dev, mgmt, len); | |
3065 | break; | |
3066 | } | |
3067 | break; | |
9f985b0e RR |
3068 | case WLAN_CATEGORY_BACK: |
3069 | switch (mgmt->u.action.u.addba_req.action_code) { | |
3070 | case WLAN_ACTION_ADDBA_REQ: | |
3071 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3072 | sizeof(mgmt->u.action.u.addba_req))) | |
3073 | break; | |
3074 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
3075 | break; | |
eadc8d9e RR |
3076 | case WLAN_ACTION_ADDBA_RESP: |
3077 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3078 | sizeof(mgmt->u.action.u.addba_resp))) | |
3079 | break; | |
3080 | ieee80211_sta_process_addba_resp(dev, mgmt, len); | |
3081 | break; | |
688b88a4 RR |
3082 | case WLAN_ACTION_DELBA: |
3083 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
3084 | sizeof(mgmt->u.action.u.delba))) | |
3085 | break; | |
3086 | ieee80211_sta_process_delba(dev, mgmt, len); | |
3087 | break; | |
9f985b0e RR |
3088 | } |
3089 | break; | |
f709fc69 | 3090 | case PLINK_CATEGORY: |
902acc78 | 3091 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3092 | mesh_rx_plink_frame(dev, mgmt, len, rx_status); |
3093 | break; | |
f709fc69 | 3094 | case MESH_PATH_SEL_CATEGORY: |
902acc78 | 3095 | if (ieee80211_vif_is_mesh(&sdata->vif)) |
f709fc69 LCC |
3096 | mesh_rx_path_sel_frame(dev, mgmt, len); |
3097 | break; | |
9f985b0e RR |
3098 | } |
3099 | } | |
f0706e82 JB |
3100 | |
3101 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
3102 | struct ieee80211_rx_status *rx_status) | |
3103 | { | |
3104 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3105 | struct ieee80211_sub_if_data *sdata; | |
3106 | struct ieee80211_if_sta *ifsta; | |
3107 | struct ieee80211_mgmt *mgmt; | |
3108 | u16 fc; | |
3109 | ||
3110 | if (skb->len < 24) | |
3111 | goto fail; | |
3112 | ||
3113 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3114 | ifsta = &sdata->u.sta; | |
3115 | ||
3116 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3117 | fc = le16_to_cpu(mgmt->frame_control); | |
3118 | ||
3119 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3120 | case IEEE80211_STYPE_PROBE_REQ: | |
3121 | case IEEE80211_STYPE_PROBE_RESP: | |
3122 | case IEEE80211_STYPE_BEACON: | |
f709fc69 | 3123 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
3124 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); |
3125 | case IEEE80211_STYPE_AUTH: | |
3126 | case IEEE80211_STYPE_ASSOC_RESP: | |
3127 | case IEEE80211_STYPE_REASSOC_RESP: | |
3128 | case IEEE80211_STYPE_DEAUTH: | |
3129 | case IEEE80211_STYPE_DISASSOC: | |
3130 | skb_queue_tail(&ifsta->skb_queue, skb); | |
3131 | queue_work(local->hw.workqueue, &ifsta->work); | |
3132 | return; | |
f0706e82 JB |
3133 | } |
3134 | ||
3135 | fail: | |
3136 | kfree_skb(skb); | |
3137 | } | |
3138 | ||
3139 | ||
3140 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
3141 | struct sk_buff *skb) | |
3142 | { | |
3143 | struct ieee80211_rx_status *rx_status; | |
3144 | struct ieee80211_sub_if_data *sdata; | |
3145 | struct ieee80211_if_sta *ifsta; | |
3146 | struct ieee80211_mgmt *mgmt; | |
3147 | u16 fc; | |
3148 | ||
3149 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3150 | ifsta = &sdata->u.sta; | |
3151 | ||
3152 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
3153 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
3154 | fc = le16_to_cpu(mgmt->frame_control); | |
3155 | ||
3156 | switch (fc & IEEE80211_FCTL_STYPE) { | |
3157 | case IEEE80211_STYPE_PROBE_REQ: | |
3158 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
3159 | rx_status); | |
3160 | break; | |
3161 | case IEEE80211_STYPE_PROBE_RESP: | |
3162 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3163 | break; | |
3164 | case IEEE80211_STYPE_BEACON: | |
3165 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3166 | break; | |
3167 | case IEEE80211_STYPE_AUTH: | |
3168 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
3169 | break; | |
3170 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 3171 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
3172 | break; |
3173 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 3174 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
3175 | break; |
3176 | case IEEE80211_STYPE_DEAUTH: | |
3177 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
3178 | break; | |
3179 | case IEEE80211_STYPE_DISASSOC: | |
3180 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
3181 | break; | |
9f985b0e | 3182 | case IEEE80211_STYPE_ACTION: |
f709fc69 | 3183 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status); |
9f985b0e | 3184 | break; |
f0706e82 JB |
3185 | } |
3186 | ||
3187 | kfree_skb(skb); | |
3188 | } | |
3189 | ||
3190 | ||
9ae54c84 | 3191 | ieee80211_rx_result |
ece8eddd ZY |
3192 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, |
3193 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
3194 | { |
3195 | struct ieee80211_mgmt *mgmt; | |
4e3996fe | 3196 | __le16 fc; |
f0706e82 | 3197 | |
ece8eddd | 3198 | if (skb->len < 2) |
e4c26add | 3199 | return RX_DROP_UNUSABLE; |
f0706e82 JB |
3200 | |
3201 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
4e3996fe | 3202 | fc = mgmt->frame_control; |
f0706e82 | 3203 | |
4e3996fe | 3204 | if (ieee80211_is_ctl(fc)) |
9ae54c84 | 3205 | return RX_CONTINUE; |
ece8eddd ZY |
3206 | |
3207 | if (skb->len < 24) | |
e4c26add | 3208 | return RX_DROP_MONITOR; |
ece8eddd | 3209 | |
4e3996fe HH |
3210 | if (ieee80211_is_probe_resp(fc)) { |
3211 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
3212 | dev_kfree_skb(skb); | |
3213 | return RX_QUEUED; | |
f0706e82 | 3214 | } |
4e3996fe HH |
3215 | |
3216 | if (ieee80211_is_beacon(fc)) { | |
3217 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
3218 | dev_kfree_skb(skb); | |
3219 | return RX_QUEUED; | |
3220 | } | |
3221 | ||
9ae54c84 | 3222 | return RX_CONTINUE; |
f0706e82 JB |
3223 | } |
3224 | ||
3225 | ||
3226 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
3227 | { | |
3228 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3229 | int active = 0; | |
3230 | struct sta_info *sta; | |
d0709a65 | 3231 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3232 | |
d0709a65 JB |
3233 | rcu_read_lock(); |
3234 | ||
3235 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
3236 | if (sta->sdata == sdata && | |
f0706e82 JB |
3237 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, |
3238 | jiffies)) { | |
3239 | active++; | |
3240 | break; | |
3241 | } | |
3242 | } | |
d0709a65 JB |
3243 | |
3244 | rcu_read_unlock(); | |
f0706e82 JB |
3245 | |
3246 | return active; | |
3247 | } | |
3248 | ||
3249 | ||
f709fc69 | 3250 | static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time) |
f0706e82 JB |
3251 | { |
3252 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3253 | struct sta_info *sta, *tmp; | |
be8755e1 | 3254 | LIST_HEAD(tmp_list); |
0795af57 | 3255 | DECLARE_MAC_BUF(mac); |
d0709a65 | 3256 | unsigned long flags; |
f0706e82 | 3257 | |
d0709a65 | 3258 | spin_lock_irqsave(&local->sta_lock, flags); |
f0706e82 | 3259 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
f709fc69 | 3260 | if (time_after(jiffies, sta->last_rx + exp_time)) { |
f4ea83dd | 3261 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
0795af57 JP |
3262 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
3263 | dev->name, print_mac(mac, sta->addr)); | |
f4ea83dd | 3264 | #endif |
cb585bcc | 3265 | __sta_info_unlink(&sta); |
d0709a65 JB |
3266 | if (sta) |
3267 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 3268 | } |
d0709a65 | 3269 | spin_unlock_irqrestore(&local->sta_lock, flags); |
be8755e1 | 3270 | |
d0709a65 JB |
3271 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) |
3272 | sta_info_destroy(sta); | |
f0706e82 JB |
3273 | } |
3274 | ||
3275 | ||
3276 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
3277 | struct ieee80211_if_sta *ifsta) | |
3278 | { | |
3279 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
3280 | ||
f709fc69 | 3281 | ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT); |
f0706e82 JB |
3282 | if (ieee80211_sta_active_ibss(dev)) |
3283 | return; | |
3284 | ||
3285 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
3286 | "IBSS networks with same SSID (merge)\n", dev->name); | |
3287 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
3288 | } | |
3289 | ||
3290 | ||
f709fc69 LCC |
3291 | #ifdef CONFIG_MAC80211_MESH |
3292 | static void ieee80211_mesh_housekeeping(struct net_device *dev, | |
3293 | struct ieee80211_if_sta *ifsta) | |
3294 | { | |
3295 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3296 | bool free_plinks; | |
3297 | ||
3298 | ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); | |
3299 | mesh_path_expire(dev); | |
3300 | ||
3301 | free_plinks = mesh_plink_availables(sdata); | |
3302 | if (free_plinks != sdata->u.sta.accepting_plinks) | |
9d139c81 | 3303 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
3304 | |
3305 | mod_timer(&ifsta->timer, jiffies + | |
3306 | IEEE80211_MESH_HOUSEKEEPING_INTERVAL); | |
3307 | } | |
3308 | ||
3309 | ||
3310 | void ieee80211_start_mesh(struct net_device *dev) | |
3311 | { | |
3312 | struct ieee80211_if_sta *ifsta; | |
3313 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3314 | ifsta = &sdata->u.sta; | |
3315 | ifsta->state = IEEE80211_MESH_UP; | |
3316 | ieee80211_sta_timer((unsigned long)sdata); | |
56a6d13d | 3317 | ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON); |
f709fc69 LCC |
3318 | } |
3319 | #endif | |
3320 | ||
3321 | ||
f0706e82 JB |
3322 | void ieee80211_sta_timer(unsigned long data) |
3323 | { | |
3324 | struct ieee80211_sub_if_data *sdata = | |
3325 | (struct ieee80211_sub_if_data *) data; | |
3326 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3327 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
3328 | ||
3329 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3330 | queue_work(local->hw.workqueue, &ifsta->work); | |
3331 | } | |
3332 | ||
f0706e82 JB |
3333 | void ieee80211_sta_work(struct work_struct *work) |
3334 | { | |
3335 | struct ieee80211_sub_if_data *sdata = | |
3336 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
3337 | struct net_device *dev = sdata->dev; | |
3338 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3339 | struct ieee80211_if_sta *ifsta; | |
3340 | struct sk_buff *skb; | |
3341 | ||
3342 | if (!netif_running(dev)) | |
3343 | return; | |
3344 | ||
ece8eddd | 3345 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
3346 | return; |
3347 | ||
f4ea83dd JB |
3348 | if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA && |
3349 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS && | |
3350 | sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) | |
f0706e82 | 3351 | return; |
f0706e82 JB |
3352 | ifsta = &sdata->u.sta; |
3353 | ||
3354 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
3355 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
3356 | ||
f709fc69 | 3357 | #ifdef CONFIG_MAC80211_MESH |
902acc78 JB |
3358 | if (ifsta->preq_queue_len && |
3359 | time_after(jiffies, | |
3360 | ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) | |
f709fc69 LCC |
3361 | mesh_path_start_discovery(dev); |
3362 | #endif | |
3363 | ||
f0706e82 JB |
3364 | if (ifsta->state != IEEE80211_AUTHENTICATE && |
3365 | ifsta->state != IEEE80211_ASSOCIATE && | |
3366 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
3367 | if (ifsta->scan_ssid_len) |
3368 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
3369 | else | |
3370 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
3371 | return; |
3372 | } | |
3373 | ||
3374 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
3375 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
3376 | return; | |
3377 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
3378 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
3379 | return; | |
3380 | ||
3381 | switch (ifsta->state) { | |
3382 | case IEEE80211_DISABLED: | |
3383 | break; | |
3384 | case IEEE80211_AUTHENTICATE: | |
3385 | ieee80211_authenticate(dev, ifsta); | |
3386 | break; | |
3387 | case IEEE80211_ASSOCIATE: | |
3388 | ieee80211_associate(dev, ifsta); | |
3389 | break; | |
3390 | case IEEE80211_ASSOCIATED: | |
3391 | ieee80211_associated(dev, ifsta); | |
3392 | break; | |
3393 | case IEEE80211_IBSS_SEARCH: | |
3394 | ieee80211_sta_find_ibss(dev, ifsta); | |
3395 | break; | |
3396 | case IEEE80211_IBSS_JOINED: | |
3397 | ieee80211_sta_merge_ibss(dev, ifsta); | |
3398 | break; | |
f709fc69 LCC |
3399 | #ifdef CONFIG_MAC80211_MESH |
3400 | case IEEE80211_MESH_UP: | |
3401 | ieee80211_mesh_housekeeping(dev, ifsta); | |
3402 | break; | |
3403 | #endif | |
f0706e82 | 3404 | default: |
f4ea83dd | 3405 | WARN_ON(1); |
f0706e82 JB |
3406 | break; |
3407 | } | |
3408 | ||
3409 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
3410 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
3411 | "mixed-cell disabled - disassociate\n", dev->name); | |
3412 | ||
3413 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
3414 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3415 | } | |
3416 | } | |
3417 | ||
3418 | ||
3419 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
3420 | struct ieee80211_if_sta *ifsta) | |
3421 | { | |
3422 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3423 | ||
3424 | if (local->ops->reset_tsf) { | |
3425 | /* Reset own TSF to allow time synchronization work. */ | |
3426 | local->ops->reset_tsf(local_to_hw(local)); | |
3427 | } | |
3428 | ||
3429 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
3430 | ||
3431 | ||
3432 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
3433 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
3434 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
3435 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
3436 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
3437 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
3438 | else | |
3439 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
f0706e82 | 3440 | ifsta->auth_transaction = -1; |
d6f2da5b JS |
3441 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
3442 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
3443 | netif_carrier_off(dev); |
3444 | } | |
3445 | ||
3446 | ||
3447 | void ieee80211_sta_req_auth(struct net_device *dev, | |
3448 | struct ieee80211_if_sta *ifsta) | |
3449 | { | |
3450 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3451 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3452 | ||
51fb61e7 | 3453 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3454 | return; |
3455 | ||
d6f2da5b JS |
3456 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
3457 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
3458 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
3459 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
3460 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
3461 | queue_work(local->hw.workqueue, &ifsta->work); | |
3462 | } | |
3463 | } | |
3464 | ||
3465 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
3466 | const char *ssid, int ssid_len) | |
3467 | { | |
3468 | int tmp, hidden_ssid; | |
3469 | ||
48225709 MW |
3470 | if (ssid_len == ifsta->ssid_len && |
3471 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
3472 | return 1; |
3473 | ||
d6f2da5b | 3474 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
3475 | return 0; |
3476 | ||
3477 | hidden_ssid = 1; | |
3478 | tmp = ssid_len; | |
3479 | while (tmp--) { | |
3480 | if (ssid[tmp] != '\0') { | |
3481 | hidden_ssid = 0; | |
3482 | break; | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
3487 | return 1; | |
3488 | ||
3489 | if (ssid_len == 1 && ssid[0] == ' ') | |
3490 | return 1; | |
3491 | ||
3492 | return 0; | |
3493 | } | |
3494 | ||
3495 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
3496 | struct ieee80211_if_sta *ifsta) | |
3497 | { | |
3498 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3499 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3500 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
3501 | int top_rssi = 0, freq; | |
3502 | ||
f0706e82 | 3503 | spin_lock_bh(&local->sta_bss_lock); |
8318d78a | 3504 | freq = local->oper_channel->center_freq; |
f0706e82 JB |
3505 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
3506 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
3507 | continue; | |
3508 | ||
34a961f7 AK |
3509 | if ((ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
3510 | IEEE80211_STA_AUTO_BSSID_SEL | | |
3511 | IEEE80211_STA_AUTO_CHANNEL_SEL)) && | |
3512 | (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
3513 | !!sdata->default_key)) | |
f0706e82 JB |
3514 | continue; |
3515 | ||
d6f2da5b JS |
3516 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
3517 | bss->freq != freq) | |
f0706e82 JB |
3518 | continue; |
3519 | ||
d6f2da5b | 3520 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
3521 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
3522 | continue; | |
3523 | ||
d6f2da5b | 3524 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
3525 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
3526 | continue; | |
3527 | ||
566bfe5a | 3528 | if (!selected || top_rssi < bss->signal) { |
f0706e82 | 3529 | selected = bss; |
566bfe5a | 3530 | top_rssi = bss->signal; |
f0706e82 JB |
3531 | } |
3532 | } | |
3533 | if (selected) | |
3534 | atomic_inc(&selected->users); | |
3535 | spin_unlock_bh(&local->sta_bss_lock); | |
3536 | ||
3537 | if (selected) { | |
be038b37 | 3538 | ieee80211_set_freq(dev, selected->freq); |
d6f2da5b | 3539 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
3540 | ieee80211_sta_set_ssid(dev, selected->ssid, |
3541 | selected->ssid_len); | |
3542 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
e2839d8f | 3543 | ieee80211_sta_def_wmm_params(dev, selected, 0); |
3e122be0 | 3544 | ieee80211_rx_bss_put(local, selected); |
f0706e82 | 3545 | ifsta->state = IEEE80211_AUTHENTICATE; |
f0706e82 JB |
3546 | ieee80211_sta_reset_auth(dev, ifsta); |
3547 | return 0; | |
3548 | } else { | |
3549 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 3550 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
3551 | ieee80211_sta_start_scan(dev, NULL, 0); |
3552 | else | |
3553 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
3554 | ifsta->ssid_len); | |
f0706e82 JB |
3555 | ifsta->state = IEEE80211_AUTHENTICATE; |
3556 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
3557 | } else | |
3558 | ifsta->state = IEEE80211_DISABLED; | |
3559 | } | |
f0706e82 JB |
3560 | return -1; |
3561 | } | |
3562 | ||
f0706e82 JB |
3563 | |
3564 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
3565 | struct ieee80211_if_sta *ifsta) | |
3566 | { | |
3567 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3568 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 3569 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
8318d78a | 3570 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3571 | u8 bssid[ETH_ALEN], *pos; |
3572 | int i; | |
167ad6f7 | 3573 | int ret; |
0795af57 | 3574 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3575 | |
3576 | #if 0 | |
3577 | /* Easier testing, use fixed BSSID. */ | |
3578 | memset(bssid, 0xfe, ETH_ALEN); | |
3579 | #else | |
3580 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
3581 | * own MAC address to make sure that devices that do not have proper | |
3582 | * random number generator get different BSSID. */ | |
3583 | get_random_bytes(bssid, ETH_ALEN); | |
3584 | for (i = 0; i < ETH_ALEN; i++) | |
3585 | bssid[i] ^= dev->dev_addr[i]; | |
3586 | bssid[0] &= ~0x01; | |
3587 | bssid[0] |= 0x02; | |
3588 | #endif | |
3589 | ||
0795af57 JP |
3590 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
3591 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 3592 | |
8318d78a JB |
3593 | bss = ieee80211_rx_bss_add(dev, bssid, |
3594 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3595 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
3596 | if (!bss) |
3597 | return -ENOMEM; | |
3598 | ||
8318d78a JB |
3599 | bss->band = local->hw.conf.channel->band; |
3600 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
3601 | |
3602 | if (local->hw.conf.beacon_int == 0) | |
dc0ae30c | 3603 | local->hw.conf.beacon_int = 100; |
f0706e82 | 3604 | bss->beacon_int = local->hw.conf.beacon_int; |
f0706e82 JB |
3605 | bss->last_update = jiffies; |
3606 | bss->capability = WLAN_CAPABILITY_IBSS; | |
988c0f72 JB |
3607 | |
3608 | if (sdata->default_key) | |
f0706e82 | 3609 | bss->capability |= WLAN_CAPABILITY_PRIVACY; |
988c0f72 | 3610 | else |
f0706e82 | 3611 | sdata->drop_unencrypted = 0; |
988c0f72 | 3612 | |
8318d78a | 3613 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 3614 | pos = bss->supp_rates; |
8318d78a JB |
3615 | for (i = 0; i < sband->n_bitrates; i++) { |
3616 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
3617 | *pos++ = (u8) (rate / 5); |
3618 | } | |
3619 | ||
167ad6f7 | 3620 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3e122be0 | 3621 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 3622 | return ret; |
f0706e82 JB |
3623 | } |
3624 | ||
3625 | ||
3626 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
3627 | struct ieee80211_if_sta *ifsta) | |
3628 | { | |
3629 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3630 | struct ieee80211_sta_bss *bss; | |
3631 | int found = 0; | |
3632 | u8 bssid[ETH_ALEN]; | |
3633 | int active_ibss; | |
0795af57 JP |
3634 | DECLARE_MAC_BUF(mac); |
3635 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
3636 | |
3637 | if (ifsta->ssid_len == 0) | |
3638 | return -EINVAL; | |
3639 | ||
3640 | active_ibss = ieee80211_sta_active_ibss(dev); | |
3641 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3642 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
3643 | dev->name, active_ibss); | |
3644 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3645 | spin_lock_bh(&local->sta_bss_lock); | |
3646 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3647 | if (ifsta->ssid_len != bss->ssid_len || | |
3648 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
3649 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
3650 | continue; | |
3651 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3652 | printk(KERN_DEBUG " bssid=%s found\n", |
3653 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
3654 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3655 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
3656 | found = 1; | |
3657 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
3658 | break; | |
3659 | } | |
3660 | spin_unlock_bh(&local->sta_bss_lock); | |
3661 | ||
3662 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
6e43829b VK |
3663 | if (found) |
3664 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " | |
3665 | "%s\n", print_mac(mac, bssid), | |
3666 | print_mac(mac2, ifsta->bssid)); | |
f0706e82 | 3667 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
80693ceb DD |
3668 | |
3669 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
167ad6f7 | 3670 | int ret; |
80693ceb DD |
3671 | int search_freq; |
3672 | ||
3673 | if (ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) | |
3674 | search_freq = bss->freq; | |
3675 | else | |
3676 | search_freq = local->hw.conf.channel->center_freq; | |
3677 | ||
3678 | bss = ieee80211_rx_bss_get(dev, bssid, search_freq, | |
3679 | ifsta->ssid, ifsta->ssid_len); | |
3680 | if (!bss) | |
3681 | goto dont_join; | |
3682 | ||
0795af57 | 3683 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 3684 | " based on configured SSID\n", |
0795af57 | 3685 | dev->name, print_mac(mac, bssid)); |
167ad6f7 | 3686 | ret = ieee80211_sta_join_ibss(dev, ifsta, bss); |
3e122be0 | 3687 | ieee80211_rx_bss_put(local, bss); |
167ad6f7 | 3688 | return ret; |
f0706e82 | 3689 | } |
80693ceb DD |
3690 | |
3691 | dont_join: | |
f0706e82 JB |
3692 | #ifdef CONFIG_MAC80211_IBSS_DEBUG |
3693 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
3694 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3695 | ||
3696 | /* Selected IBSS not found in current scan results - try to scan */ | |
3697 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
3698 | !ieee80211_sta_active_ibss(dev)) { | |
3699 | mod_timer(&ifsta->timer, jiffies + | |
3700 | IEEE80211_IBSS_MERGE_INTERVAL); | |
3701 | } else if (time_after(jiffies, local->last_scan_completed + | |
3702 | IEEE80211_SCAN_INTERVAL)) { | |
3703 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
3704 | "join\n", dev->name); | |
3705 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
3706 | ifsta->ssid_len); | |
3707 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
3708 | int interval = IEEE80211_SCAN_INTERVAL; | |
3709 | ||
3710 | if (time_after(jiffies, ifsta->ibss_join_req + | |
3711 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 3712 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
3713 | (!(local->oper_channel->flags & |
3714 | IEEE80211_CHAN_NO_IBSS))) | |
f0706e82 | 3715 | return ieee80211_sta_create_ibss(dev, ifsta); |
d6f2da5b | 3716 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a JB |
3717 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
3718 | " %d MHz\n", dev->name, | |
3719 | local->hw.conf.channel->center_freq); | |
f0706e82 JB |
3720 | } |
3721 | ||
3722 | /* No IBSS found - decrease scan interval and continue | |
3723 | * scanning. */ | |
3724 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3725 | } | |
3726 | ||
3727 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3728 | mod_timer(&ifsta->timer, jiffies + interval); | |
3729 | return 0; | |
3730 | } | |
3731 | ||
3732 | return 0; | |
3733 | } | |
3734 | ||
3735 | ||
3736 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3737 | { | |
8318d78a | 3738 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 | 3739 | struct ieee80211_if_sta *ifsta; |
9d139c81 | 3740 | int res; |
f0706e82 JB |
3741 | |
3742 | if (len > IEEE80211_MAX_SSID_LEN) | |
3743 | return -EINVAL; | |
3744 | ||
f0706e82 JB |
3745 | ifsta = &sdata->u.sta; |
3746 | ||
9d139c81 JB |
3747 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) { |
3748 | memset(ifsta->ssid, 0, sizeof(ifsta->ssid)); | |
3749 | memcpy(ifsta->ssid, ssid, len); | |
3750 | ifsta->ssid_len = len; | |
d6f2da5b | 3751 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
9d139c81 JB |
3752 | |
3753 | res = 0; | |
3754 | /* | |
3755 | * Hack! MLME code needs to be cleaned up to have different | |
3756 | * entry points for configuration and internal selection change | |
3757 | */ | |
3758 | if (netif_running(sdata->dev)) | |
3759 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID); | |
3760 | if (res) { | |
3761 | printk(KERN_DEBUG "%s: Failed to config new SSID to " | |
3762 | "the low-level driver\n", dev->name); | |
3763 | return res; | |
3764 | } | |
3765 | } | |
f0706e82 | 3766 | |
d6f2da5b JS |
3767 | if (len) |
3768 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3769 | else | |
3770 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
9d139c81 | 3771 | |
51fb61e7 | 3772 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3773 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3774 | ifsta->ibss_join_req = jiffies; |
3775 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3776 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3777 | } | |
9d139c81 | 3778 | |
f0706e82 JB |
3779 | return 0; |
3780 | } | |
3781 | ||
3782 | ||
3783 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3784 | { | |
3785 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3786 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3787 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3788 | *len = ifsta->ssid_len; | |
3789 | return 0; | |
3790 | } | |
3791 | ||
3792 | ||
3793 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3794 | { | |
3795 | struct ieee80211_sub_if_data *sdata; | |
3796 | struct ieee80211_if_sta *ifsta; | |
3797 | int res; | |
3798 | ||
3799 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3800 | ifsta = &sdata->u.sta; | |
3801 | ||
3802 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3803 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
9d139c81 JB |
3804 | res = 0; |
3805 | /* | |
3806 | * Hack! See also ieee80211_sta_set_ssid. | |
3807 | */ | |
3808 | if (netif_running(sdata->dev)) | |
3809 | res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID); | |
f0706e82 JB |
3810 | if (res) { |
3811 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3812 | "the low-level driver\n", dev->name); | |
3813 | return res; | |
3814 | } | |
3815 | } | |
3816 | ||
d6f2da5b JS |
3817 | if (is_valid_ether_addr(bssid)) |
3818 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3819 | else |
d6f2da5b JS |
3820 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3821 | ||
f0706e82 JB |
3822 | return 0; |
3823 | } | |
3824 | ||
3825 | ||
3826 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3827 | struct ieee80211_sub_if_data *sdata, | |
3828 | int powersave) | |
3829 | { | |
3830 | struct sk_buff *skb; | |
3831 | struct ieee80211_hdr *nullfunc; | |
4e3996fe | 3832 | __le16 fc; |
f0706e82 JB |
3833 | |
3834 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3835 | if (!skb) { | |
3836 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3837 | "frame\n", sdata->dev->name); | |
3838 | return; | |
3839 | } | |
3840 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3841 | ||
3842 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3843 | memset(nullfunc, 0, 24); | |
4e3996fe HH |
3844 | fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | |
3845 | IEEE80211_FCTL_TODS); | |
f0706e82 | 3846 | if (powersave) |
4e3996fe HH |
3847 | fc |= cpu_to_le16(IEEE80211_FCTL_PM); |
3848 | nullfunc->frame_control = fc; | |
f0706e82 JB |
3849 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); |
3850 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3851 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3852 | ||
3853 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3854 | } | |
3855 | ||
3856 | ||
69d3b6f4 JB |
3857 | static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) |
3858 | { | |
3859 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA || | |
3860 | ieee80211_vif_is_mesh(&sdata->vif)) | |
3861 | ieee80211_sta_timer((unsigned long)sdata); | |
3862 | } | |
3863 | ||
f0706e82 JB |
3864 | void ieee80211_scan_completed(struct ieee80211_hw *hw) |
3865 | { | |
3866 | struct ieee80211_local *local = hw_to_local(hw); | |
3867 | struct net_device *dev = local->scan_dev; | |
3868 | struct ieee80211_sub_if_data *sdata; | |
3869 | union iwreq_data wrqu; | |
3870 | ||
3871 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3872 | memset(&wrqu, 0, sizeof(wrqu)); |
3873 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3874 | |
ece8eddd ZY |
3875 | if (local->sta_hw_scanning) { |
3876 | local->sta_hw_scanning = 0; | |
675ef586 MA |
3877 | if (ieee80211_hw_config(local)) |
3878 | printk(KERN_DEBUG "%s: failed to restore operational " | |
3879 | "channel after scan\n", dev->name); | |
69d3b6f4 JB |
3880 | /* Restart STA timer for HW scan case */ |
3881 | rcu_read_lock(); | |
3882 | list_for_each_entry_rcu(sdata, &local->interfaces, list) | |
3883 | ieee80211_restart_sta_timer(sdata); | |
3884 | rcu_read_unlock(); | |
3885 | ||
ece8eddd ZY |
3886 | goto done; |
3887 | } | |
3888 | ||
3889 | local->sta_sw_scanning = 0; | |
f0706e82 | 3890 | if (ieee80211_hw_config(local)) |
4b50e388 | 3891 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3892 | "channel after scan\n", dev->name); |
3893 | ||
4150c572 JB |
3894 | |
3895 | netif_tx_lock_bh(local->mdev); | |
e308a5d8 | 3896 | netif_addr_lock(local->mdev); |
4150c572 JB |
3897 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; |
3898 | local->ops->configure_filter(local_to_hw(local), | |
3899 | FIF_BCN_PRBRESP_PROMISC, | |
3900 | &local->filter_flags, | |
3901 | local->mdev->mc_count, | |
3902 | local->mdev->mc_list); | |
3903 | ||
e308a5d8 | 3904 | netif_addr_unlock(local->mdev); |
4150c572 | 3905 | netif_tx_unlock_bh(local->mdev); |
f0706e82 | 3906 | |
79010420 JB |
3907 | rcu_read_lock(); |
3908 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
69d3b6f4 JB |
3909 | /* Tell AP we're back */ |
3910 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && | |
3911 | sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) | |
3912 | ieee80211_send_nullfunc(local, sdata, 0); | |
14042cbe | 3913 | |
69d3b6f4 | 3914 | ieee80211_restart_sta_timer(sdata); |
f709fc69 | 3915 | |
f0706e82 JB |
3916 | netif_wake_queue(sdata->dev); |
3917 | } | |
79010420 | 3918 | rcu_read_unlock(); |
f0706e82 | 3919 | |
ece8eddd | 3920 | done: |
f0706e82 | 3921 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3922 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3923 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3924 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
4c43e0d0 | 3925 | (!(ifsta->state == IEEE80211_IBSS_JOINED) && |
f0706e82 JB |
3926 | !ieee80211_sta_active_ibss(dev))) |
3927 | ieee80211_sta_find_ibss(dev, ifsta); | |
3928 | } | |
3929 | } | |
3930 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
3931 | ||
3932 | void ieee80211_sta_scan_work(struct work_struct *work) | |
3933 | { | |
3934 | struct ieee80211_local *local = | |
3935 | container_of(work, struct ieee80211_local, scan_work.work); | |
3936 | struct net_device *dev = local->scan_dev; | |
3937 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
8318d78a | 3938 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3939 | struct ieee80211_channel *chan; |
3940 | int skip; | |
3941 | unsigned long next_delay = 0; | |
3942 | ||
ece8eddd | 3943 | if (!local->sta_sw_scanning) |
f0706e82 JB |
3944 | return; |
3945 | ||
3946 | switch (local->scan_state) { | |
3947 | case SCAN_SET_CHANNEL: | |
69d464d5 JB |
3948 | /* |
3949 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS | |
3950 | * after we successfully scanned the last channel of the last | |
3951 | * band (and the last band is supported by the hw) | |
3952 | */ | |
8318d78a JB |
3953 | if (local->scan_band < IEEE80211_NUM_BANDS) |
3954 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3955 | else | |
3956 | sband = NULL; | |
3957 | ||
69d464d5 JB |
3958 | /* |
3959 | * If we are at an unsupported band and have more bands | |
3960 | * left to scan, advance to the next supported one. | |
3961 | */ | |
3962 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { | |
8318d78a JB |
3963 | local->scan_band++; |
3964 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3965 | local->scan_channel_idx = 0; | |
3966 | } | |
3967 | ||
69d464d5 JB |
3968 | /* if no more bands/channels left, complete scan */ |
3969 | if (!sband || local->scan_channel_idx >= sband->n_channels) { | |
f0706e82 JB |
3970 | ieee80211_scan_completed(local_to_hw(local)); |
3971 | return; | |
3972 | } | |
8318d78a JB |
3973 | skip = 0; |
3974 | chan = &sband->channels[local->scan_channel_idx]; | |
3975 | ||
3976 | if (chan->flags & IEEE80211_CHAN_DISABLED || | |
51fb61e7 | 3977 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
8318d78a | 3978 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
f0706e82 JB |
3979 | skip = 1; |
3980 | ||
3981 | if (!skip) { | |
f0706e82 JB |
3982 | local->scan_channel = chan; |
3983 | if (ieee80211_hw_config(local)) { | |
8318d78a JB |
3984 | printk(KERN_DEBUG "%s: failed to set freq to " |
3985 | "%d MHz for scan\n", dev->name, | |
3986 | chan->center_freq); | |
f0706e82 JB |
3987 | skip = 1; |
3988 | } | |
3989 | } | |
3990 | ||
69d464d5 | 3991 | /* advance state machine to next channel/band */ |
f0706e82 | 3992 | local->scan_channel_idx++; |
8318d78a | 3993 | if (local->scan_channel_idx >= sband->n_channels) { |
69d464d5 JB |
3994 | /* |
3995 | * scan_band may end up == IEEE80211_NUM_BANDS, but | |
3996 | * we'll catch that case above and complete the scan | |
3997 | * if that is the case. | |
3998 | */ | |
8318d78a JB |
3999 | local->scan_band++; |
4000 | local->scan_channel_idx = 0; | |
f0706e82 JB |
4001 | } |
4002 | ||
4003 | if (skip) | |
4004 | break; | |
4005 | ||
4006 | next_delay = IEEE80211_PROBE_DELAY + | |
4007 | usecs_to_jiffies(local->hw.channel_change_time); | |
4008 | local->scan_state = SCAN_SEND_PROBE; | |
4009 | break; | |
4010 | case SCAN_SEND_PROBE: | |
8318d78a | 4011 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
f0706e82 | 4012 | local->scan_state = SCAN_SET_CHANNEL; |
8318d78a JB |
4013 | |
4014 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
4015 | break; | |
4016 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
4017 | local->scan_ssid_len); | |
4018 | next_delay = IEEE80211_CHANNEL_TIME; | |
f0706e82 JB |
4019 | break; |
4020 | } | |
4021 | ||
ece8eddd | 4022 | if (local->sta_sw_scanning) |
f0706e82 JB |
4023 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
4024 | next_delay); | |
4025 | } | |
4026 | ||
4027 | ||
4028 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
4029 | u8 *ssid, size_t ssid_len) | |
4030 | { | |
4031 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4032 | struct ieee80211_sub_if_data *sdata; | |
4033 | ||
4034 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
4035 | return -EINVAL; | |
4036 | ||
4037 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
4038 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
4039 | * BSSID: MACAddress | |
4040 | * SSID | |
4041 | * ScanType: ACTIVE, PASSIVE | |
4042 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
4043 | * a Probe frame during active scanning | |
4044 | * ChannelList | |
4045 | * MinChannelTime (>= ProbeDelay), in TU | |
4046 | * MaxChannelTime: (>= MinChannelTime), in TU | |
4047 | */ | |
4048 | ||
4049 | /* MLME-SCAN.confirm | |
4050 | * BSSDescriptionSet | |
4051 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
4052 | */ | |
4053 | ||
ece8eddd | 4054 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4055 | if (local->scan_dev == dev) |
4056 | return 0; | |
4057 | return -EBUSY; | |
4058 | } | |
4059 | ||
4060 | if (local->ops->hw_scan) { | |
4061 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 4062 | ssid, ssid_len); |
f0706e82 | 4063 | if (!rc) { |
ece8eddd | 4064 | local->sta_hw_scanning = 1; |
f0706e82 JB |
4065 | local->scan_dev = dev; |
4066 | } | |
4067 | return rc; | |
4068 | } | |
4069 | ||
ece8eddd | 4070 | local->sta_sw_scanning = 1; |
f0706e82 | 4071 | |
79010420 JB |
4072 | rcu_read_lock(); |
4073 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
f0706e82 | 4074 | netif_stop_queue(sdata->dev); |
51fb61e7 | 4075 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 4076 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4077 | ieee80211_send_nullfunc(local, sdata, 1); |
4078 | } | |
79010420 | 4079 | rcu_read_unlock(); |
f0706e82 JB |
4080 | |
4081 | if (ssid) { | |
4082 | local->scan_ssid_len = ssid_len; | |
4083 | memcpy(local->scan_ssid, ssid, ssid_len); | |
4084 | } else | |
4085 | local->scan_ssid_len = 0; | |
4086 | local->scan_state = SCAN_SET_CHANNEL; | |
f0706e82 | 4087 | local->scan_channel_idx = 0; |
8318d78a | 4088 | local->scan_band = IEEE80211_BAND_2GHZ; |
f0706e82 JB |
4089 | local->scan_dev = dev; |
4090 | ||
b9e40857 | 4091 | netif_addr_lock_bh(local->mdev); |
4150c572 JB |
4092 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; |
4093 | local->ops->configure_filter(local_to_hw(local), | |
4094 | FIF_BCN_PRBRESP_PROMISC, | |
4095 | &local->filter_flags, | |
4096 | local->mdev->mc_count, | |
4097 | local->mdev->mc_list); | |
b9e40857 | 4098 | netif_addr_unlock_bh(local->mdev); |
f0706e82 JB |
4099 | |
4100 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
4101 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
4102 | IEEE80211_CHANNEL_TIME); | |
4103 | ||
4104 | return 0; | |
4105 | } | |
4106 | ||
4107 | ||
4108 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
4109 | { | |
4110 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4111 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4112 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4113 | ||
51fb61e7 | 4114 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4115 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
4116 | ||
ece8eddd | 4117 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
4118 | if (local->scan_dev == dev) |
4119 | return 0; | |
4120 | return -EBUSY; | |
4121 | } | |
4122 | ||
a0af5f14 HS |
4123 | ifsta->scan_ssid_len = ssid_len; |
4124 | if (ssid_len) | |
4125 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
4126 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
4127 | queue_work(local->hw.workqueue, &ifsta->work); | |
4128 | return 0; | |
4129 | } | |
4130 | ||
4131 | static char * | |
4132 | ieee80211_sta_scan_result(struct net_device *dev, | |
ccc58057 | 4133 | struct iw_request_info *info, |
f0706e82 JB |
4134 | struct ieee80211_sta_bss *bss, |
4135 | char *current_ev, char *end_buf) | |
4136 | { | |
4137 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4138 | struct iw_event iwe; | |
4139 | ||
4140 | if (time_after(jiffies, | |
4141 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
4142 | return current_ev; | |
4143 | ||
f0706e82 JB |
4144 | memset(&iwe, 0, sizeof(iwe)); |
4145 | iwe.cmd = SIOCGIWAP; | |
4146 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
4147 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
ccc58057 | 4148 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4149 | IW_EV_ADDR_LEN); |
4150 | ||
4151 | memset(&iwe, 0, sizeof(iwe)); | |
4152 | iwe.cmd = SIOCGIWESSID; | |
902acc78 JB |
4153 | if (bss_mesh_cfg(bss)) { |
4154 | iwe.u.data.length = bss_mesh_id_len(bss); | |
f709fc69 | 4155 | iwe.u.data.flags = 1; |
ccc58057 DM |
4156 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4157 | &iwe, bss_mesh_id(bss)); | |
f709fc69 LCC |
4158 | } else { |
4159 | iwe.u.data.length = bss->ssid_len; | |
4160 | iwe.u.data.flags = 1; | |
ccc58057 DM |
4161 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4162 | &iwe, bss->ssid); | |
f709fc69 | 4163 | } |
f0706e82 | 4164 | |
1d1b5359 LCC |
4165 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) |
4166 | || bss_mesh_cfg(bss)) { | |
f0706e82 JB |
4167 | memset(&iwe, 0, sizeof(iwe)); |
4168 | iwe.cmd = SIOCGIWMODE; | |
902acc78 | 4169 | if (bss_mesh_cfg(bss)) |
f709fc69 LCC |
4170 | iwe.u.mode = IW_MODE_MESH; |
4171 | else if (bss->capability & WLAN_CAPABILITY_ESS) | |
f0706e82 JB |
4172 | iwe.u.mode = IW_MODE_MASTER; |
4173 | else | |
4174 | iwe.u.mode = IW_MODE_ADHOC; | |
ccc58057 DM |
4175 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, |
4176 | &iwe, IW_EV_UINT_LEN); | |
f0706e82 JB |
4177 | } |
4178 | ||
4179 | memset(&iwe, 0, sizeof(iwe)); | |
4180 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4181 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); |
4182 | iwe.u.freq.e = 0; | |
ccc58057 | 4183 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4184 | IW_EV_FREQ_LEN); |
8318d78a JB |
4185 | |
4186 | memset(&iwe, 0, sizeof(iwe)); | |
4187 | iwe.cmd = SIOCGIWFREQ; | |
9381be05 TW |
4188 | iwe.u.freq.m = bss->freq; |
4189 | iwe.u.freq.e = 6; | |
ccc58057 | 4190 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 | 4191 | IW_EV_FREQ_LEN); |
f0706e82 JB |
4192 | memset(&iwe, 0, sizeof(iwe)); |
4193 | iwe.cmd = IWEVQUAL; | |
566bfe5a BR |
4194 | iwe.u.qual.qual = bss->qual; |
4195 | iwe.u.qual.level = bss->signal; | |
f0706e82 JB |
4196 | iwe.u.qual.noise = bss->noise; |
4197 | iwe.u.qual.updated = local->wstats_flags; | |
ccc58057 | 4198 | current_ev = iwe_stream_add_event(info, current_ev, end_buf, &iwe, |
f0706e82 JB |
4199 | IW_EV_QUAL_LEN); |
4200 | ||
4201 | memset(&iwe, 0, sizeof(iwe)); | |
4202 | iwe.cmd = SIOCGIWENCODE; | |
4203 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
4204 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
4205 | else | |
4206 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
4207 | iwe.u.data.length = 0; | |
ccc58057 DM |
4208 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4209 | &iwe, ""); | |
f0706e82 JB |
4210 | |
4211 | if (bss && bss->wpa_ie) { | |
4212 | memset(&iwe, 0, sizeof(iwe)); | |
4213 | iwe.cmd = IWEVGENIE; | |
4214 | iwe.u.data.length = bss->wpa_ie_len; | |
ccc58057 DM |
4215 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4216 | &iwe, bss->wpa_ie); | |
f0706e82 JB |
4217 | } |
4218 | ||
4219 | if (bss && bss->rsn_ie) { | |
4220 | memset(&iwe, 0, sizeof(iwe)); | |
4221 | iwe.cmd = IWEVGENIE; | |
4222 | iwe.u.data.length = bss->rsn_ie_len; | |
ccc58057 DM |
4223 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4224 | &iwe, bss->rsn_ie); | |
f0706e82 JB |
4225 | } |
4226 | ||
e623157b EG |
4227 | if (bss && bss->ht_ie) { |
4228 | memset(&iwe, 0, sizeof(iwe)); | |
4229 | iwe.cmd = IWEVGENIE; | |
4230 | iwe.u.data.length = bss->ht_ie_len; | |
ccc58057 DM |
4231 | current_ev = iwe_stream_add_point(info, current_ev, end_buf, |
4232 | &iwe, bss->ht_ie); | |
e623157b EG |
4233 | } |
4234 | ||
f0706e82 JB |
4235 | if (bss && bss->supp_rates_len > 0) { |
4236 | /* display all supported rates in readable format */ | |
ccc58057 | 4237 | char *p = current_ev + iwe_stream_lcp_len(info); |
f0706e82 JB |
4238 | int i; |
4239 | ||
4240 | memset(&iwe, 0, sizeof(iwe)); | |
4241 | iwe.cmd = SIOCGIWRATE; | |
4242 | /* Those two flags are ignored... */ | |
4243 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
4244 | ||
4245 | for (i = 0; i < bss->supp_rates_len; i++) { | |
4246 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
4247 | 0x7f) * 500000); | |
ccc58057 | 4248 | p = iwe_stream_add_value(info, current_ev, p, |
f0706e82 JB |
4249 | end_buf, &iwe, IW_EV_PARAM_LEN); |
4250 | } | |
4251 | current_ev = p; | |
4252 | } | |
4253 | ||
4254 | if (bss) { | |
4255 | char *buf; | |
4256 | buf = kmalloc(30, GFP_ATOMIC); | |
4257 | if (buf) { | |
4258 | memset(&iwe, 0, sizeof(iwe)); | |
4259 | iwe.cmd = IWEVCUSTOM; | |
4260 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
4261 | iwe.u.data.length = strlen(buf); | |
ccc58057 DM |
4262 | current_ev = iwe_stream_add_point(info, current_ev, |
4263 | end_buf, | |
f0706e82 | 4264 | &iwe, buf); |
bf998f68 EG |
4265 | memset(&iwe, 0, sizeof(iwe)); |
4266 | iwe.cmd = IWEVCUSTOM; | |
4267 | sprintf(buf, " Last beacon: %dms ago", | |
4268 | jiffies_to_msecs(jiffies - bss->last_update)); | |
4269 | iwe.u.data.length = strlen(buf); | |
4270 | current_ev = iwe_stream_add_point(info, current_ev, | |
4271 | end_buf, &iwe, buf); | |
f0706e82 JB |
4272 | kfree(buf); |
4273 | } | |
4274 | } | |
4275 | ||
902acc78 | 4276 | if (bss_mesh_cfg(bss)) { |
f709fc69 | 4277 | char *buf; |
24736701 | 4278 | u8 *cfg = bss_mesh_cfg(bss); |
4f5d4c4d | 4279 | buf = kmalloc(50, GFP_ATOMIC); |
f709fc69 LCC |
4280 | if (buf) { |
4281 | memset(&iwe, 0, sizeof(iwe)); | |
4282 | iwe.cmd = IWEVCUSTOM; | |
24736701 | 4283 | sprintf(buf, "Mesh network (version %d)", cfg[0]); |
4f5d4c4d | 4284 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4285 | current_ev = iwe_stream_add_point(info, current_ev, |
4286 | end_buf, | |
4f5d4c4d LCC |
4287 | &iwe, buf); |
4288 | sprintf(buf, "Path Selection Protocol ID: " | |
24736701 JL |
4289 | "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], |
4290 | cfg[4]); | |
4f5d4c4d | 4291 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4292 | current_ev = iwe_stream_add_point(info, current_ev, |
4293 | end_buf, | |
4f5d4c4d LCC |
4294 | &iwe, buf); |
4295 | sprintf(buf, "Path Selection Metric ID: " | |
24736701 JL |
4296 | "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], |
4297 | cfg[8]); | |
4f5d4c4d | 4298 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4299 | current_ev = iwe_stream_add_point(info, current_ev, |
4300 | end_buf, | |
4f5d4c4d LCC |
4301 | &iwe, buf); |
4302 | sprintf(buf, "Congestion Control Mode ID: " | |
24736701 JL |
4303 | "0x%02X%02X%02X%02X", cfg[9], cfg[10], |
4304 | cfg[11], cfg[12]); | |
4f5d4c4d | 4305 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4306 | current_ev = iwe_stream_add_point(info, current_ev, |
4307 | end_buf, | |
4f5d4c4d LCC |
4308 | &iwe, buf); |
4309 | sprintf(buf, "Channel Precedence: " | |
24736701 JL |
4310 | "0x%02X%02X%02X%02X", cfg[13], cfg[14], |
4311 | cfg[15], cfg[16]); | |
f709fc69 | 4312 | iwe.u.data.length = strlen(buf); |
ccc58057 DM |
4313 | current_ev = iwe_stream_add_point(info, current_ev, |
4314 | end_buf, | |
f709fc69 LCC |
4315 | &iwe, buf); |
4316 | kfree(buf); | |
4317 | } | |
4318 | } | |
4319 | ||
f0706e82 JB |
4320 | return current_ev; |
4321 | } | |
4322 | ||
4323 | ||
ccc58057 DM |
4324 | int ieee80211_sta_scan_results(struct net_device *dev, |
4325 | struct iw_request_info *info, | |
4326 | char *buf, size_t len) | |
f0706e82 JB |
4327 | { |
4328 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4329 | char *current_ev = buf; | |
4330 | char *end_buf = buf + len; | |
4331 | struct ieee80211_sta_bss *bss; | |
4332 | ||
4333 | spin_lock_bh(&local->sta_bss_lock); | |
4334 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
4335 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
4336 | spin_unlock_bh(&local->sta_bss_lock); | |
4337 | return -E2BIG; | |
4338 | } | |
ccc58057 DM |
4339 | current_ev = ieee80211_sta_scan_result(dev, info, bss, |
4340 | current_ev, end_buf); | |
f0706e82 JB |
4341 | } |
4342 | spin_unlock_bh(&local->sta_bss_lock); | |
4343 | return current_ev - buf; | |
4344 | } | |
4345 | ||
4346 | ||
4347 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
4348 | { | |
4349 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4350 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
988c0f72 | 4351 | |
f0706e82 JB |
4352 | kfree(ifsta->extra_ie); |
4353 | if (len == 0) { | |
4354 | ifsta->extra_ie = NULL; | |
4355 | ifsta->extra_ie_len = 0; | |
4356 | return 0; | |
4357 | } | |
4358 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
4359 | if (!ifsta->extra_ie) { | |
4360 | ifsta->extra_ie_len = 0; | |
4361 | return -ENOMEM; | |
4362 | } | |
4363 | memcpy(ifsta->extra_ie, ie, len); | |
4364 | ifsta->extra_ie_len = len; | |
4365 | return 0; | |
4366 | } | |
4367 | ||
4368 | ||
988c0f72 JB |
4369 | struct sta_info *ieee80211_ibss_add_sta(struct net_device *dev, |
4370 | struct sk_buff *skb, u8 *bssid, | |
87291c02 | 4371 | u8 *addr, u64 supp_rates) |
f0706e82 JB |
4372 | { |
4373 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
4374 | struct sta_info *sta; | |
91fa558b | 4375 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 4376 | DECLARE_MAC_BUF(mac); |
87291c02 | 4377 | int band = local->hw.conf.channel->band; |
f0706e82 JB |
4378 | |
4379 | /* TODO: Could consider removing the least recently used entry and | |
4380 | * allow new one to be added. */ | |
4381 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
4382 | if (net_ratelimit()) { | |
4383 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 4384 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
4385 | } |
4386 | return NULL; | |
4387 | } | |
4388 | ||
1e188637 | 4389 | if (compare_ether_addr(bssid, sdata->u.sta.bssid)) |
87291c02 VK |
4390 | return NULL; |
4391 | ||
f4ea83dd | 4392 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
0795af57 | 4393 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 4394 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f4ea83dd | 4395 | #endif |
f0706e82 | 4396 | |
73651ee6 JB |
4397 | sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); |
4398 | if (!sta) | |
f0706e82 JB |
4399 | return NULL; |
4400 | ||
07346f81 | 4401 | set_sta_flags(sta, WLAN_STA_AUTHORIZED); |
238814fd | 4402 | |
87291c02 VK |
4403 | if (supp_rates) |
4404 | sta->supp_rates[band] = supp_rates; | |
4405 | else | |
4406 | sta->supp_rates[band] = sdata->u.sta.supp_rates_bits[band]; | |
f0706e82 JB |
4407 | |
4408 | rate_control_rate_init(sta, local); | |
4409 | ||
93e5deb1 | 4410 | if (sta_info_insert(sta)) |
73651ee6 | 4411 | return NULL; |
73651ee6 | 4412 | |
d0709a65 | 4413 | return sta; |
f0706e82 JB |
4414 | } |
4415 | ||
4416 | ||
4417 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
4418 | { | |
4419 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4420 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4421 | ||
f4ea83dd | 4422 | printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n", |
f0706e82 JB |
4423 | dev->name, reason); |
4424 | ||
51fb61e7 JB |
4425 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
4426 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
4427 | return -EINVAL; |
4428 | ||
4429 | ieee80211_send_deauth(dev, ifsta, reason); | |
4430 | ieee80211_set_disassoc(dev, ifsta, 1); | |
4431 | return 0; | |
4432 | } | |
4433 | ||
4434 | ||
4435 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
4436 | { | |
4437 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4438 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
4439 | ||
f4ea83dd | 4440 | printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n", |
f0706e82 JB |
4441 | dev->name, reason); |
4442 | ||
51fb61e7 | 4443 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
4444 | return -EINVAL; |
4445 | ||
d6f2da5b | 4446 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
4447 | return -1; |
4448 | ||
4449 | ieee80211_send_disassoc(dev, ifsta, reason); | |
4450 | ieee80211_set_disassoc(dev, ifsta, 0); | |
4451 | return 0; | |
4452 | } | |
84363e6e MA |
4453 | |
4454 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
4455 | enum ieee80211_notification_types notif_type) | |
4456 | { | |
4457 | struct ieee80211_local *local = hw_to_local(hw); | |
4458 | struct ieee80211_sub_if_data *sdata; | |
4459 | ||
4460 | switch (notif_type) { | |
4461 | case IEEE80211_NOTIFY_RE_ASSOC: | |
4462 | rcu_read_lock(); | |
4463 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
3e122be0 JB |
4464 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
4465 | continue; | |
84363e6e | 4466 | |
3e122be0 | 4467 | ieee80211_sta_req_auth(sdata->dev, &sdata->u.sta); |
84363e6e MA |
4468 | } |
4469 | rcu_read_unlock(); | |
4470 | break; | |
4471 | } | |
4472 | } | |
4473 | EXPORT_SYMBOL(ieee80211_notify_mac); |