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> | |
f0706e82 JB |
27 | #include <net/iw_handler.h> |
28 | #include <asm/types.h> | |
f0706e82 JB |
29 | |
30 | #include <net/mac80211.h> | |
31 | #include "ieee80211_i.h" | |
32 | #include "ieee80211_rate.h" | |
47f0c502 | 33 | #include "ieee80211_led.h" |
f0706e82 JB |
34 | |
35 | #define IEEE80211_AUTH_TIMEOUT (HZ / 5) | |
36 | #define IEEE80211_AUTH_MAX_TRIES 3 | |
37 | #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) | |
38 | #define IEEE80211_ASSOC_MAX_TRIES 3 | |
39 | #define IEEE80211_MONITORING_INTERVAL (2 * HZ) | |
40 | #define IEEE80211_PROBE_INTERVAL (60 * HZ) | |
41 | #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) | |
42 | #define IEEE80211_SCAN_INTERVAL (2 * HZ) | |
43 | #define IEEE80211_SCAN_INTERVAL_SLOW (15 * HZ) | |
44 | #define IEEE80211_IBSS_JOIN_TIMEOUT (20 * HZ) | |
45 | ||
46 | #define IEEE80211_PROBE_DELAY (HZ / 33) | |
47 | #define IEEE80211_CHANNEL_TIME (HZ / 33) | |
48 | #define IEEE80211_PASSIVE_CHANNEL_TIME (HZ / 5) | |
49 | #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) | |
50 | #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) | |
51 | #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) | |
52 | ||
53 | #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 | |
54 | ||
55 | ||
56 | #define IEEE80211_FC(type, stype) cpu_to_le16(type | stype) | |
57 | ||
58 | #define ERP_INFO_USE_PROTECTION BIT(1) | |
59 | ||
9f985b0e RR |
60 | /* mgmt header + 1 byte action code */ |
61 | #define IEEE80211_MIN_ACTION_SIZE (24 + 1) | |
62 | ||
63 | #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002 | |
64 | #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C | |
65 | #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0 | |
688b88a4 RR |
66 | #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000 |
67 | #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800 | |
9f985b0e | 68 | |
07db2183 RR |
69 | /* next values represent the buffer size for A-MPDU frame. |
70 | * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2) */ | |
71 | #define IEEE80211_MIN_AMPDU_BUF 0x8 | |
72 | #define IEEE80211_MAX_AMPDU_BUF 0x40 | |
73 | ||
f0706e82 JB |
74 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, |
75 | u8 *ssid, size_t ssid_len); | |
76 | static struct ieee80211_sta_bss * | |
8318d78a | 77 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 78 | u8 *ssid, u8 ssid_len); |
f0706e82 JB |
79 | static void ieee80211_rx_bss_put(struct net_device *dev, |
80 | struct ieee80211_sta_bss *bss); | |
81 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
82 | struct ieee80211_if_sta *ifsta); | |
83 | static int ieee80211_sta_wep_configured(struct net_device *dev); | |
84 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
85 | u8 *ssid, size_t ssid_len); | |
86 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
87 | struct ieee80211_if_sta *ifsta); | |
88 | ||
89 | ||
ee385855 LCC |
90 | void ieee802_11_parse_elems(u8 *start, size_t len, |
91 | struct ieee802_11_elems *elems) | |
f0706e82 JB |
92 | { |
93 | size_t left = len; | |
94 | u8 *pos = start; | |
f0706e82 JB |
95 | |
96 | memset(elems, 0, sizeof(*elems)); | |
97 | ||
98 | while (left >= 2) { | |
99 | u8 id, elen; | |
100 | ||
101 | id = *pos++; | |
102 | elen = *pos++; | |
103 | left -= 2; | |
104 | ||
67a4cce4 JL |
105 | if (elen > left) |
106 | return; | |
f0706e82 JB |
107 | |
108 | switch (id) { | |
109 | case WLAN_EID_SSID: | |
110 | elems->ssid = pos; | |
111 | elems->ssid_len = elen; | |
112 | break; | |
113 | case WLAN_EID_SUPP_RATES: | |
114 | elems->supp_rates = pos; | |
115 | elems->supp_rates_len = elen; | |
116 | break; | |
117 | case WLAN_EID_FH_PARAMS: | |
118 | elems->fh_params = pos; | |
119 | elems->fh_params_len = elen; | |
120 | break; | |
121 | case WLAN_EID_DS_PARAMS: | |
122 | elems->ds_params = pos; | |
123 | elems->ds_params_len = elen; | |
124 | break; | |
125 | case WLAN_EID_CF_PARAMS: | |
126 | elems->cf_params = pos; | |
127 | elems->cf_params_len = elen; | |
128 | break; | |
129 | case WLAN_EID_TIM: | |
130 | elems->tim = pos; | |
131 | elems->tim_len = elen; | |
132 | break; | |
133 | case WLAN_EID_IBSS_PARAMS: | |
134 | elems->ibss_params = pos; | |
135 | elems->ibss_params_len = elen; | |
136 | break; | |
137 | case WLAN_EID_CHALLENGE: | |
138 | elems->challenge = pos; | |
139 | elems->challenge_len = elen; | |
140 | break; | |
141 | case WLAN_EID_WPA: | |
142 | if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 && | |
143 | pos[2] == 0xf2) { | |
144 | /* Microsoft OUI (00:50:F2) */ | |
145 | if (pos[3] == 1) { | |
146 | /* OUI Type 1 - WPA IE */ | |
147 | elems->wpa = pos; | |
148 | elems->wpa_len = elen; | |
149 | } else if (elen >= 5 && pos[3] == 2) { | |
150 | if (pos[4] == 0) { | |
151 | elems->wmm_info = pos; | |
152 | elems->wmm_info_len = elen; | |
153 | } else if (pos[4] == 1) { | |
154 | elems->wmm_param = pos; | |
155 | elems->wmm_param_len = elen; | |
156 | } | |
157 | } | |
158 | } | |
159 | break; | |
160 | case WLAN_EID_RSN: | |
161 | elems->rsn = pos; | |
162 | elems->rsn_len = elen; | |
163 | break; | |
164 | case WLAN_EID_ERP_INFO: | |
165 | elems->erp_info = pos; | |
166 | elems->erp_info_len = elen; | |
167 | break; | |
168 | case WLAN_EID_EXT_SUPP_RATES: | |
169 | elems->ext_supp_rates = pos; | |
170 | elems->ext_supp_rates_len = elen; | |
171 | break; | |
c7153508 RR |
172 | case WLAN_EID_HT_CAPABILITY: |
173 | elems->ht_cap_elem = pos; | |
174 | elems->ht_cap_elem_len = elen; | |
175 | break; | |
176 | case WLAN_EID_HT_EXTRA_INFO: | |
177 | elems->ht_info_elem = pos; | |
178 | elems->ht_info_elem_len = elen; | |
179 | break; | |
ee385855 LCC |
180 | case WLAN_EID_MESH_ID: |
181 | elems->mesh_id = pos; | |
182 | elems->mesh_id_len = elen; | |
183 | break; | |
184 | case WLAN_EID_MESH_CONFIG: | |
185 | elems->mesh_config = pos; | |
186 | elems->mesh_config_len = elen; | |
187 | break; | |
188 | case WLAN_EID_PEER_LINK: | |
189 | elems->peer_link = pos; | |
190 | elems->peer_link_len = elen; | |
191 | break; | |
192 | case WLAN_EID_PREQ: | |
193 | elems->preq = pos; | |
194 | elems->preq_len = elen; | |
195 | break; | |
196 | case WLAN_EID_PREP: | |
197 | elems->prep = pos; | |
198 | elems->prep_len = elen; | |
199 | break; | |
200 | case WLAN_EID_PERR: | |
201 | elems->perr = pos; | |
202 | elems->perr_len = elen; | |
203 | break; | |
f0706e82 | 204 | default: |
f0706e82 JB |
205 | break; |
206 | } | |
207 | ||
208 | left -= elen; | |
209 | pos += elen; | |
210 | } | |
f0706e82 JB |
211 | } |
212 | ||
213 | ||
f0706e82 JB |
214 | static int ecw2cw(int ecw) |
215 | { | |
ac2bf324 | 216 | return (1 << ecw) - 1; |
f0706e82 JB |
217 | } |
218 | ||
f0706e82 JB |
219 | static void ieee80211_sta_wmm_params(struct net_device *dev, |
220 | struct ieee80211_if_sta *ifsta, | |
221 | u8 *wmm_param, size_t wmm_param_len) | |
222 | { | |
223 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
224 | struct ieee80211_tx_queue_params params; | |
225 | size_t left; | |
226 | int count; | |
227 | u8 *pos; | |
228 | ||
229 | if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) | |
230 | return; | |
231 | count = wmm_param[6] & 0x0f; | |
232 | if (count == ifsta->wmm_last_param_set) | |
233 | return; | |
234 | ifsta->wmm_last_param_set = count; | |
235 | ||
236 | pos = wmm_param + 8; | |
237 | left = wmm_param_len - 8; | |
238 | ||
239 | memset(¶ms, 0, sizeof(params)); | |
240 | ||
241 | if (!local->ops->conf_tx) | |
242 | return; | |
243 | ||
244 | local->wmm_acm = 0; | |
245 | for (; left >= 4; left -= 4, pos += 4) { | |
246 | int aci = (pos[0] >> 5) & 0x03; | |
247 | int acm = (pos[0] >> 4) & 0x01; | |
248 | int queue; | |
249 | ||
250 | switch (aci) { | |
251 | case 1: | |
252 | queue = IEEE80211_TX_QUEUE_DATA3; | |
253 | if (acm) { | |
254 | local->wmm_acm |= BIT(0) | BIT(3); | |
255 | } | |
256 | break; | |
257 | case 2: | |
258 | queue = IEEE80211_TX_QUEUE_DATA1; | |
259 | if (acm) { | |
260 | local->wmm_acm |= BIT(4) | BIT(5); | |
261 | } | |
262 | break; | |
263 | case 3: | |
264 | queue = IEEE80211_TX_QUEUE_DATA0; | |
265 | if (acm) { | |
266 | local->wmm_acm |= BIT(6) | BIT(7); | |
267 | } | |
268 | break; | |
269 | case 0: | |
270 | default: | |
271 | queue = IEEE80211_TX_QUEUE_DATA2; | |
272 | if (acm) { | |
273 | local->wmm_acm |= BIT(1) | BIT(2); | |
274 | } | |
275 | break; | |
276 | } | |
277 | ||
278 | params.aifs = pos[0] & 0x0f; | |
279 | params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); | |
280 | params.cw_min = ecw2cw(pos[1] & 0x0f); | |
3330d7be JB |
281 | params.txop = pos[2] | (pos[3] << 8); |
282 | #ifdef CONFIG_MAC80211_DEBUG | |
f0706e82 | 283 | printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " |
3330d7be | 284 | "cWmin=%d cWmax=%d txop=%d\n", |
f0706e82 | 285 | dev->name, queue, aci, acm, params.aifs, params.cw_min, |
3330d7be JB |
286 | params.cw_max, params.txop); |
287 | #endif | |
f0706e82 JB |
288 | /* TODO: handle ACM (block TX, fallback to next lowest allowed |
289 | * AC for now) */ | |
290 | if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { | |
291 | printk(KERN_DEBUG "%s: failed to set TX queue " | |
292 | "parameters for queue %d\n", dev->name, queue); | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | ||
471b3efd JB |
298 | static u32 ieee80211_handle_erp_ie(struct ieee80211_sub_if_data *sdata, |
299 | u8 erp_value) | |
5628221c | 300 | { |
471b3efd | 301 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
5628221c | 302 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
471b3efd JB |
303 | bool use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0; |
304 | bool preamble_mode = (erp_value & WLAN_ERP_BARKER_PREAMBLE) != 0; | |
0795af57 | 305 | DECLARE_MAC_BUF(mac); |
471b3efd | 306 | u32 changed = 0; |
5628221c | 307 | |
471b3efd | 308 | if (use_protection != bss_conf->use_cts_prot) { |
5628221c DD |
309 | if (net_ratelimit()) { |
310 | printk(KERN_DEBUG "%s: CTS protection %s (BSSID=" | |
0795af57 | 311 | "%s)\n", |
471b3efd | 312 | sdata->dev->name, |
5628221c | 313 | use_protection ? "enabled" : "disabled", |
0795af57 | 314 | print_mac(mac, ifsta->bssid)); |
5628221c | 315 | } |
471b3efd JB |
316 | bss_conf->use_cts_prot = use_protection; |
317 | changed |= BSS_CHANGED_ERP_CTS_PROT; | |
5628221c | 318 | } |
7e9ed188 | 319 | |
471b3efd | 320 | if (preamble_mode != bss_conf->use_short_preamble) { |
7e9ed188 DD |
321 | if (net_ratelimit()) { |
322 | printk(KERN_DEBUG "%s: switched to %s barker preamble" | |
0795af57 | 323 | " (BSSID=%s)\n", |
471b3efd | 324 | sdata->dev->name, |
7e9ed188 DD |
325 | (preamble_mode == WLAN_ERP_PREAMBLE_SHORT) ? |
326 | "short" : "long", | |
0795af57 | 327 | print_mac(mac, ifsta->bssid)); |
7e9ed188 | 328 | } |
471b3efd JB |
329 | bss_conf->use_short_preamble = preamble_mode; |
330 | changed |= BSS_CHANGED_ERP_PREAMBLE; | |
7e9ed188 | 331 | } |
d9430a32 | 332 | |
471b3efd | 333 | return changed; |
5628221c DD |
334 | } |
335 | ||
c7153508 RR |
336 | int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, |
337 | struct ieee80211_ht_info *ht_info) | |
338 | { | |
339 | ||
340 | if (ht_info == NULL) | |
341 | return -EINVAL; | |
342 | ||
343 | memset(ht_info, 0, sizeof(*ht_info)); | |
344 | ||
345 | if (ht_cap_ie) { | |
346 | u8 ampdu_info = ht_cap_ie->ampdu_params_info; | |
347 | ||
348 | ht_info->ht_supported = 1; | |
349 | ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info); | |
350 | ht_info->ampdu_factor = | |
351 | ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR; | |
352 | ht_info->ampdu_density = | |
353 | (ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2; | |
354 | memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16); | |
355 | } else | |
356 | ht_info->ht_supported = 0; | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | int ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
362 | struct ieee80211_ht_addt_info *ht_add_info_ie, | |
363 | struct ieee80211_ht_bss_info *bss_info) | |
364 | { | |
365 | if (bss_info == NULL) | |
366 | return -EINVAL; | |
367 | ||
368 | memset(bss_info, 0, sizeof(*bss_info)); | |
369 | ||
370 | if (ht_add_info_ie) { | |
371 | u16 op_mode; | |
372 | op_mode = le16_to_cpu(ht_add_info_ie->operation_mode); | |
373 | ||
374 | bss_info->primary_channel = ht_add_info_ie->control_chan; | |
375 | bss_info->bss_cap = ht_add_info_ie->ht_param; | |
376 | bss_info->bss_op_mode = (u8)(op_mode & 0xff); | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
5628221c | 381 | |
f0706e82 JB |
382 | static void ieee80211_sta_send_associnfo(struct net_device *dev, |
383 | struct ieee80211_if_sta *ifsta) | |
384 | { | |
385 | char *buf; | |
386 | size_t len; | |
387 | int i; | |
388 | union iwreq_data wrqu; | |
389 | ||
390 | if (!ifsta->assocreq_ies && !ifsta->assocresp_ies) | |
391 | return; | |
392 | ||
393 | buf = kmalloc(50 + 2 * (ifsta->assocreq_ies_len + | |
0ec0b7ac | 394 | ifsta->assocresp_ies_len), GFP_KERNEL); |
f0706e82 JB |
395 | if (!buf) |
396 | return; | |
397 | ||
398 | len = sprintf(buf, "ASSOCINFO("); | |
399 | if (ifsta->assocreq_ies) { | |
400 | len += sprintf(buf + len, "ReqIEs="); | |
401 | for (i = 0; i < ifsta->assocreq_ies_len; i++) { | |
402 | len += sprintf(buf + len, "%02x", | |
403 | ifsta->assocreq_ies[i]); | |
404 | } | |
405 | } | |
406 | if (ifsta->assocresp_ies) { | |
407 | if (ifsta->assocreq_ies) | |
408 | len += sprintf(buf + len, " "); | |
409 | len += sprintf(buf + len, "RespIEs="); | |
410 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
411 | len += sprintf(buf + len, "%02x", | |
412 | ifsta->assocresp_ies[i]); | |
413 | } | |
414 | } | |
415 | len += sprintf(buf + len, ")"); | |
416 | ||
417 | if (len > IW_CUSTOM_MAX) { | |
418 | len = sprintf(buf, "ASSOCRESPIE="); | |
419 | for (i = 0; i < ifsta->assocresp_ies_len; i++) { | |
420 | len += sprintf(buf + len, "%02x", | |
421 | ifsta->assocresp_ies[i]); | |
422 | } | |
423 | } | |
424 | ||
425 | memset(&wrqu, 0, sizeof(wrqu)); | |
426 | wrqu.data.length = len; | |
427 | wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); | |
428 | ||
429 | kfree(buf); | |
430 | } | |
431 | ||
432 | ||
433 | static void ieee80211_set_associated(struct net_device *dev, | |
d6f2da5b | 434 | struct ieee80211_if_sta *ifsta, |
47f0c502 | 435 | bool assoc) |
f0706e82 | 436 | { |
471b3efd JB |
437 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
438 | struct ieee80211_local *local = sdata->local; | |
f0706e82 | 439 | union iwreq_data wrqu; |
471b3efd | 440 | u32 changed = BSS_CHANGED_ASSOC; |
f0706e82 | 441 | |
f0706e82 | 442 | if (assoc) { |
5628221c | 443 | struct ieee80211_sta_bss *bss; |
d6f2da5b JS |
444 | |
445 | ifsta->flags |= IEEE80211_STA_ASSOCIATED; | |
446 | ||
51fb61e7 | 447 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 | 448 | return; |
5628221c | 449 | |
65c107ab | 450 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 451 | local->hw.conf.channel->center_freq, |
cffdd30d | 452 | ifsta->ssid, ifsta->ssid_len); |
5628221c DD |
453 | if (bss) { |
454 | if (bss->has_erp_value) | |
471b3efd JB |
455 | changed |= ieee80211_handle_erp_ie( |
456 | sdata, bss->erp_value); | |
5628221c DD |
457 | ieee80211_rx_bss_put(dev, bss); |
458 | } | |
459 | ||
f0706e82 | 460 | netif_carrier_on(dev); |
d6f2da5b | 461 | ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
462 | memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); |
463 | memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); | |
464 | ieee80211_sta_send_associnfo(dev, ifsta); | |
465 | } else { | |
d6f2da5b JS |
466 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
467 | ||
f0706e82 | 468 | netif_carrier_off(dev); |
d9430a32 | 469 | ieee80211_reset_erp_info(dev); |
f0706e82 JB |
470 | memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); |
471 | } | |
472 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
473 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
474 | ifsta->last_probe = jiffies; | |
47f0c502 | 475 | ieee80211_led_assoc(local, assoc); |
471b3efd | 476 | |
b2205256 | 477 | sdata->bss_conf.assoc = assoc; |
471b3efd | 478 | ieee80211_bss_info_change_notify(sdata, changed); |
f0706e82 JB |
479 | } |
480 | ||
481 | static void ieee80211_set_disassoc(struct net_device *dev, | |
482 | struct ieee80211_if_sta *ifsta, int deauth) | |
483 | { | |
484 | if (deauth) | |
485 | ifsta->auth_tries = 0; | |
486 | ifsta->assoc_tries = 0; | |
487 | ieee80211_set_associated(dev, ifsta, 0); | |
488 | } | |
489 | ||
ee385855 LCC |
490 | void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, |
491 | int encrypt) | |
f0706e82 JB |
492 | { |
493 | struct ieee80211_sub_if_data *sdata; | |
494 | struct ieee80211_tx_packet_data *pkt_data; | |
495 | ||
496 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
497 | skb->dev = sdata->local->mdev; | |
498 | skb_set_mac_header(skb, 0); | |
499 | skb_set_network_header(skb, 0); | |
500 | skb_set_transport_header(skb, 0); | |
501 | ||
502 | pkt_data = (struct ieee80211_tx_packet_data *) skb->cb; | |
503 | memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data)); | |
504 | pkt_data->ifindex = sdata->dev->ifindex; | |
e8bf9649 JS |
505 | if (!encrypt) |
506 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
f0706e82 JB |
507 | |
508 | dev_queue_xmit(skb); | |
509 | } | |
510 | ||
511 | ||
512 | static void ieee80211_send_auth(struct net_device *dev, | |
513 | struct ieee80211_if_sta *ifsta, | |
514 | int transaction, u8 *extra, size_t extra_len, | |
515 | int encrypt) | |
516 | { | |
517 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
518 | struct sk_buff *skb; | |
519 | struct ieee80211_mgmt *mgmt; | |
520 | ||
521 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
522 | sizeof(*mgmt) + 6 + extra_len); | |
523 | if (!skb) { | |
524 | printk(KERN_DEBUG "%s: failed to allocate buffer for auth " | |
525 | "frame\n", dev->name); | |
526 | return; | |
527 | } | |
528 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
529 | ||
530 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6); | |
531 | memset(mgmt, 0, 24 + 6); | |
532 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
533 | IEEE80211_STYPE_AUTH); | |
534 | if (encrypt) | |
535 | mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); | |
536 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
537 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
538 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
539 | mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg); | |
540 | mgmt->u.auth.auth_transaction = cpu_to_le16(transaction); | |
541 | ifsta->auth_transaction = transaction + 1; | |
542 | mgmt->u.auth.status_code = cpu_to_le16(0); | |
543 | if (extra) | |
544 | memcpy(skb_put(skb, extra_len), extra, extra_len); | |
545 | ||
546 | ieee80211_sta_tx(dev, skb, encrypt); | |
547 | } | |
548 | ||
549 | ||
550 | static void ieee80211_authenticate(struct net_device *dev, | |
551 | struct ieee80211_if_sta *ifsta) | |
552 | { | |
0795af57 JP |
553 | DECLARE_MAC_BUF(mac); |
554 | ||
f0706e82 JB |
555 | ifsta->auth_tries++; |
556 | if (ifsta->auth_tries > IEEE80211_AUTH_MAX_TRIES) { | |
0795af57 | 557 | printk(KERN_DEBUG "%s: authentication with AP %s" |
f0706e82 | 558 | " timed out\n", |
0795af57 | 559 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
560 | ifsta->state = IEEE80211_DISABLED; |
561 | return; | |
562 | } | |
563 | ||
564 | ifsta->state = IEEE80211_AUTHENTICATE; | |
0795af57 JP |
565 | printk(KERN_DEBUG "%s: authenticate with AP %s\n", |
566 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
567 | |
568 | ieee80211_send_auth(dev, ifsta, 1, NULL, 0, 0); | |
569 | ||
570 | mod_timer(&ifsta->timer, jiffies + IEEE80211_AUTH_TIMEOUT); | |
571 | } | |
572 | ||
573 | ||
574 | static void ieee80211_send_assoc(struct net_device *dev, | |
575 | struct ieee80211_if_sta *ifsta) | |
576 | { | |
577 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
f0706e82 JB |
578 | struct sk_buff *skb; |
579 | struct ieee80211_mgmt *mgmt; | |
580 | u8 *pos, *ies; | |
581 | int i, len; | |
582 | u16 capab; | |
583 | struct ieee80211_sta_bss *bss; | |
584 | int wmm = 0; | |
8318d78a | 585 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
586 | |
587 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + | |
588 | sizeof(*mgmt) + 200 + ifsta->extra_ie_len + | |
589 | ifsta->ssid_len); | |
590 | if (!skb) { | |
591 | printk(KERN_DEBUG "%s: failed to allocate buffer for assoc " | |
592 | "frame\n", dev->name); | |
593 | return; | |
594 | } | |
595 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
596 | ||
8318d78a JB |
597 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
598 | ||
f0706e82 | 599 | capab = ifsta->capab; |
8318d78a JB |
600 | |
601 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { | |
602 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
603 | capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; | |
604 | if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) | |
605 | capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; | |
f0706e82 | 606 | } |
8318d78a JB |
607 | |
608 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, | |
609 | local->hw.conf.channel->center_freq, | |
cffdd30d | 610 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
611 | if (bss) { |
612 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
613 | capab |= WLAN_CAPABILITY_PRIVACY; | |
614 | if (bss->wmm_ie) { | |
615 | wmm = 1; | |
616 | } | |
617 | ieee80211_rx_bss_put(dev, bss); | |
618 | } | |
619 | ||
620 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
621 | memset(mgmt, 0, 24); | |
622 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
623 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
624 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
625 | ||
d6f2da5b | 626 | if (ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) { |
f0706e82 JB |
627 | skb_put(skb, 10); |
628 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
629 | IEEE80211_STYPE_REASSOC_REQ); | |
630 | mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab); | |
631 | mgmt->u.reassoc_req.listen_interval = cpu_to_le16(1); | |
632 | memcpy(mgmt->u.reassoc_req.current_ap, ifsta->prev_bssid, | |
633 | ETH_ALEN); | |
634 | } else { | |
635 | skb_put(skb, 4); | |
636 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
637 | IEEE80211_STYPE_ASSOC_REQ); | |
638 | mgmt->u.assoc_req.capab_info = cpu_to_le16(capab); | |
639 | mgmt->u.assoc_req.listen_interval = cpu_to_le16(1); | |
640 | } | |
641 | ||
642 | /* SSID */ | |
643 | ies = pos = skb_put(skb, 2 + ifsta->ssid_len); | |
644 | *pos++ = WLAN_EID_SSID; | |
645 | *pos++ = ifsta->ssid_len; | |
646 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
647 | ||
8318d78a | 648 | len = sband->n_bitrates; |
f0706e82 JB |
649 | if (len > 8) |
650 | len = 8; | |
651 | pos = skb_put(skb, len + 2); | |
652 | *pos++ = WLAN_EID_SUPP_RATES; | |
653 | *pos++ = len; | |
654 | for (i = 0; i < len; i++) { | |
8318d78a | 655 | int rate = sband->bitrates[i].bitrate; |
f0706e82 JB |
656 | *pos++ = (u8) (rate / 5); |
657 | } | |
658 | ||
8318d78a JB |
659 | if (sband->n_bitrates > len) { |
660 | pos = skb_put(skb, sband->n_bitrates - len + 2); | |
f0706e82 | 661 | *pos++ = WLAN_EID_EXT_SUPP_RATES; |
8318d78a JB |
662 | *pos++ = sband->n_bitrates - len; |
663 | for (i = len; i < sband->n_bitrates; i++) { | |
664 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
665 | *pos++ = (u8) (rate / 5); |
666 | } | |
667 | } | |
668 | ||
669 | if (ifsta->extra_ie) { | |
670 | pos = skb_put(skb, ifsta->extra_ie_len); | |
671 | memcpy(pos, ifsta->extra_ie, ifsta->extra_ie_len); | |
672 | } | |
673 | ||
d6f2da5b | 674 | if (wmm && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
675 | pos = skb_put(skb, 9); |
676 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
677 | *pos++ = 7; /* len */ | |
678 | *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */ | |
679 | *pos++ = 0x50; | |
680 | *pos++ = 0xf2; | |
681 | *pos++ = 2; /* WME */ | |
682 | *pos++ = 0; /* WME info */ | |
683 | *pos++ = 1; /* WME ver */ | |
684 | *pos++ = 0; | |
685 | } | |
c7153508 | 686 | /* wmm support is a must to HT */ |
8318d78a JB |
687 | if (wmm && sband->ht_info.ht_supported) { |
688 | __le16 tmp = cpu_to_le16(sband->ht_info.cap); | |
c7153508 RR |
689 | pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); |
690 | *pos++ = WLAN_EID_HT_CAPABILITY; | |
691 | *pos++ = sizeof(struct ieee80211_ht_cap); | |
692 | memset(pos, 0, sizeof(struct ieee80211_ht_cap)); | |
693 | memcpy(pos, &tmp, sizeof(u16)); | |
694 | pos += sizeof(u16); | |
8318d78a JB |
695 | /* TODO: needs a define here for << 2 */ |
696 | *pos++ = sband->ht_info.ampdu_factor | | |
697 | (sband->ht_info.ampdu_density << 2); | |
698 | memcpy(pos, sband->ht_info.supp_mcs_set, 16); | |
c7153508 | 699 | } |
f0706e82 JB |
700 | |
701 | kfree(ifsta->assocreq_ies); | |
702 | ifsta->assocreq_ies_len = (skb->data + skb->len) - ies; | |
0ec0b7ac | 703 | ifsta->assocreq_ies = kmalloc(ifsta->assocreq_ies_len, GFP_KERNEL); |
f0706e82 JB |
704 | if (ifsta->assocreq_ies) |
705 | memcpy(ifsta->assocreq_ies, ies, ifsta->assocreq_ies_len); | |
706 | ||
707 | ieee80211_sta_tx(dev, skb, 0); | |
708 | } | |
709 | ||
710 | ||
711 | static void ieee80211_send_deauth(struct net_device *dev, | |
712 | struct ieee80211_if_sta *ifsta, u16 reason) | |
713 | { | |
714 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
715 | struct sk_buff *skb; | |
716 | struct ieee80211_mgmt *mgmt; | |
717 | ||
718 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
719 | if (!skb) { | |
720 | printk(KERN_DEBUG "%s: failed to allocate buffer for deauth " | |
721 | "frame\n", dev->name); | |
722 | return; | |
723 | } | |
724 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
725 | ||
726 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
727 | memset(mgmt, 0, 24); | |
728 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
729 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
730 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
731 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
732 | IEEE80211_STYPE_DEAUTH); | |
733 | skb_put(skb, 2); | |
734 | mgmt->u.deauth.reason_code = cpu_to_le16(reason); | |
735 | ||
736 | ieee80211_sta_tx(dev, skb, 0); | |
737 | } | |
738 | ||
739 | ||
740 | static void ieee80211_send_disassoc(struct net_device *dev, | |
741 | struct ieee80211_if_sta *ifsta, u16 reason) | |
742 | { | |
743 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
744 | struct sk_buff *skb; | |
745 | struct ieee80211_mgmt *mgmt; | |
746 | ||
747 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); | |
748 | if (!skb) { | |
749 | printk(KERN_DEBUG "%s: failed to allocate buffer for disassoc " | |
750 | "frame\n", dev->name); | |
751 | return; | |
752 | } | |
753 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
754 | ||
755 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
756 | memset(mgmt, 0, 24); | |
757 | memcpy(mgmt->da, ifsta->bssid, ETH_ALEN); | |
758 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
759 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
760 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
761 | IEEE80211_STYPE_DISASSOC); | |
762 | skb_put(skb, 2); | |
763 | mgmt->u.disassoc.reason_code = cpu_to_le16(reason); | |
764 | ||
765 | ieee80211_sta_tx(dev, skb, 0); | |
766 | } | |
767 | ||
768 | ||
769 | static int ieee80211_privacy_mismatch(struct net_device *dev, | |
770 | struct ieee80211_if_sta *ifsta) | |
771 | { | |
65c107ab | 772 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 773 | struct ieee80211_sta_bss *bss; |
5b98b1f7 JB |
774 | int bss_privacy; |
775 | int wep_privacy; | |
776 | int privacy_invoked; | |
f0706e82 | 777 | |
5b98b1f7 | 778 | if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) |
f0706e82 JB |
779 | return 0; |
780 | ||
8318d78a JB |
781 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
782 | local->hw.conf.channel->center_freq, | |
cffdd30d | 783 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
784 | if (!bss) |
785 | return 0; | |
786 | ||
5b98b1f7 JB |
787 | bss_privacy = !!(bss->capability & WLAN_CAPABILITY_PRIVACY); |
788 | wep_privacy = !!ieee80211_sta_wep_configured(dev); | |
789 | privacy_invoked = !!(ifsta->flags & IEEE80211_STA_PRIVACY_INVOKED); | |
f0706e82 JB |
790 | |
791 | ieee80211_rx_bss_put(dev, bss); | |
792 | ||
5b98b1f7 JB |
793 | if ((bss_privacy == wep_privacy) || (bss_privacy == privacy_invoked)) |
794 | return 0; | |
795 | ||
796 | return 1; | |
f0706e82 JB |
797 | } |
798 | ||
799 | ||
800 | static void ieee80211_associate(struct net_device *dev, | |
801 | struct ieee80211_if_sta *ifsta) | |
802 | { | |
0795af57 JP |
803 | DECLARE_MAC_BUF(mac); |
804 | ||
f0706e82 JB |
805 | ifsta->assoc_tries++; |
806 | if (ifsta->assoc_tries > IEEE80211_ASSOC_MAX_TRIES) { | |
0795af57 | 807 | printk(KERN_DEBUG "%s: association with AP %s" |
f0706e82 | 808 | " timed out\n", |
0795af57 | 809 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 JB |
810 | ifsta->state = IEEE80211_DISABLED; |
811 | return; | |
812 | } | |
813 | ||
814 | ifsta->state = IEEE80211_ASSOCIATE; | |
0795af57 JP |
815 | printk(KERN_DEBUG "%s: associate with AP %s\n", |
816 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
817 | if (ieee80211_privacy_mismatch(dev, ifsta)) { |
818 | printk(KERN_DEBUG "%s: mismatch in privacy configuration and " | |
819 | "mixed-cell disabled - abort association\n", dev->name); | |
820 | ifsta->state = IEEE80211_DISABLED; | |
821 | return; | |
822 | } | |
823 | ||
824 | ieee80211_send_assoc(dev, ifsta); | |
825 | ||
826 | mod_timer(&ifsta->timer, jiffies + IEEE80211_ASSOC_TIMEOUT); | |
827 | } | |
828 | ||
829 | ||
830 | static void ieee80211_associated(struct net_device *dev, | |
831 | struct ieee80211_if_sta *ifsta) | |
832 | { | |
833 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
834 | struct sta_info *sta; | |
835 | int disassoc; | |
0795af57 | 836 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
837 | |
838 | /* TODO: start monitoring current AP signal quality and number of | |
839 | * missed beacons. Scan other channels every now and then and search | |
840 | * for better APs. */ | |
841 | /* TODO: remove expired BSSes */ | |
842 | ||
843 | ifsta->state = IEEE80211_ASSOCIATED; | |
844 | ||
845 | sta = sta_info_get(local, ifsta->bssid); | |
846 | if (!sta) { | |
0795af57 JP |
847 | printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", |
848 | dev->name, print_mac(mac, ifsta->bssid)); | |
f0706e82 JB |
849 | disassoc = 1; |
850 | } else { | |
851 | disassoc = 0; | |
852 | if (time_after(jiffies, | |
853 | sta->last_rx + IEEE80211_MONITORING_INTERVAL)) { | |
d6f2da5b | 854 | if (ifsta->flags & IEEE80211_STA_PROBEREQ_POLL) { |
f0706e82 | 855 | printk(KERN_DEBUG "%s: No ProbeResp from " |
0795af57 | 856 | "current AP %s - assume out of " |
f0706e82 | 857 | "range\n", |
0795af57 | 858 | dev->name, print_mac(mac, ifsta->bssid)); |
f0706e82 | 859 | disassoc = 1; |
be8755e1 | 860 | sta_info_free(sta); |
d6f2da5b | 861 | } else |
f0706e82 JB |
862 | ieee80211_send_probe_req(dev, ifsta->bssid, |
863 | local->scan_ssid, | |
864 | local->scan_ssid_len); | |
d6f2da5b | 865 | ifsta->flags ^= IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 | 866 | } else { |
d6f2da5b | 867 | ifsta->flags &= ~IEEE80211_STA_PROBEREQ_POLL; |
f0706e82 JB |
868 | if (time_after(jiffies, ifsta->last_probe + |
869 | IEEE80211_PROBE_INTERVAL)) { | |
870 | ifsta->last_probe = jiffies; | |
871 | ieee80211_send_probe_req(dev, ifsta->bssid, | |
872 | ifsta->ssid, | |
873 | ifsta->ssid_len); | |
874 | } | |
875 | } | |
876 | sta_info_put(sta); | |
877 | } | |
878 | if (disassoc) { | |
2d192d95 MW |
879 | ifsta->state = IEEE80211_DISABLED; |
880 | ieee80211_set_associated(dev, ifsta, 0); | |
f0706e82 JB |
881 | } else { |
882 | mod_timer(&ifsta->timer, jiffies + | |
883 | IEEE80211_MONITORING_INTERVAL); | |
884 | } | |
885 | } | |
886 | ||
887 | ||
888 | static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, | |
889 | u8 *ssid, size_t ssid_len) | |
890 | { | |
891 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
8318d78a | 892 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
893 | struct sk_buff *skb; |
894 | struct ieee80211_mgmt *mgmt; | |
895 | u8 *pos, *supp_rates, *esupp_rates = NULL; | |
896 | int i; | |
897 | ||
898 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200); | |
899 | if (!skb) { | |
900 | printk(KERN_DEBUG "%s: failed to allocate buffer for probe " | |
901 | "request\n", dev->name); | |
902 | return; | |
903 | } | |
904 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
905 | ||
906 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
907 | memset(mgmt, 0, 24); | |
908 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
909 | IEEE80211_STYPE_PROBE_REQ); | |
910 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
911 | if (dst) { | |
912 | memcpy(mgmt->da, dst, ETH_ALEN); | |
913 | memcpy(mgmt->bssid, dst, ETH_ALEN); | |
914 | } else { | |
915 | memset(mgmt->da, 0xff, ETH_ALEN); | |
916 | memset(mgmt->bssid, 0xff, ETH_ALEN); | |
917 | } | |
918 | pos = skb_put(skb, 2 + ssid_len); | |
919 | *pos++ = WLAN_EID_SSID; | |
920 | *pos++ = ssid_len; | |
921 | memcpy(pos, ssid, ssid_len); | |
922 | ||
923 | supp_rates = skb_put(skb, 2); | |
924 | supp_rates[0] = WLAN_EID_SUPP_RATES; | |
925 | supp_rates[1] = 0; | |
8318d78a JB |
926 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; |
927 | ||
928 | for (i = 0; i < sband->n_bitrates; i++) { | |
929 | struct ieee80211_rate *rate = &sband->bitrates[i]; | |
f0706e82 JB |
930 | if (esupp_rates) { |
931 | pos = skb_put(skb, 1); | |
932 | esupp_rates[1]++; | |
933 | } else if (supp_rates[1] == 8) { | |
934 | esupp_rates = skb_put(skb, 3); | |
935 | esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES; | |
936 | esupp_rates[1] = 1; | |
937 | pos = &esupp_rates[2]; | |
938 | } else { | |
939 | pos = skb_put(skb, 1); | |
940 | supp_rates[1]++; | |
941 | } | |
8318d78a | 942 | *pos = rate->bitrate / 5; |
f0706e82 JB |
943 | } |
944 | ||
945 | ieee80211_sta_tx(dev, skb, 0); | |
946 | } | |
947 | ||
948 | ||
949 | static int ieee80211_sta_wep_configured(struct net_device *dev) | |
950 | { | |
951 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
952 | if (!sdata || !sdata->default_key || | |
8f20fc24 | 953 | sdata->default_key->conf.alg != ALG_WEP) |
f0706e82 JB |
954 | return 0; |
955 | return 1; | |
956 | } | |
957 | ||
958 | ||
959 | static void ieee80211_auth_completed(struct net_device *dev, | |
960 | struct ieee80211_if_sta *ifsta) | |
961 | { | |
962 | printk(KERN_DEBUG "%s: authenticated\n", dev->name); | |
d6f2da5b | 963 | ifsta->flags |= IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
964 | ieee80211_associate(dev, ifsta); |
965 | } | |
966 | ||
967 | ||
968 | static void ieee80211_auth_challenge(struct net_device *dev, | |
969 | struct ieee80211_if_sta *ifsta, | |
970 | struct ieee80211_mgmt *mgmt, | |
971 | size_t len) | |
972 | { | |
973 | u8 *pos; | |
974 | struct ieee802_11_elems elems; | |
975 | ||
976 | printk(KERN_DEBUG "%s: replying to auth challenge\n", dev->name); | |
977 | pos = mgmt->u.auth.variable; | |
67a4cce4 | 978 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
979 | if (!elems.challenge) { |
980 | printk(KERN_DEBUG "%s: no challenge IE in shared key auth " | |
981 | "frame\n", dev->name); | |
982 | return; | |
983 | } | |
984 | ieee80211_send_auth(dev, ifsta, 3, elems.challenge - 2, | |
985 | elems.challenge_len + 2, 1); | |
986 | } | |
987 | ||
9f985b0e RR |
988 | static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, |
989 | u8 dialog_token, u16 status, u16 policy, | |
990 | u16 buf_size, u16 timeout) | |
991 | { | |
992 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
993 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
994 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
995 | struct sk_buff *skb; | |
996 | struct ieee80211_mgmt *mgmt; | |
997 | u16 capab; | |
998 | ||
07db2183 RR |
999 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + |
1000 | sizeof(mgmt->u.action.u.addba_resp)); | |
9f985b0e RR |
1001 | if (!skb) { |
1002 | printk(KERN_DEBUG "%s: failed to allocate buffer " | |
1003 | "for addba resp frame\n", dev->name); | |
1004 | return; | |
1005 | } | |
1006 | ||
1007 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1008 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1009 | memset(mgmt, 0, 24); | |
1010 | memcpy(mgmt->da, da, ETH_ALEN); | |
1011 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1012 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
9f985b0e RR |
1013 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1014 | else | |
1015 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1016 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1017 | IEEE80211_STYPE_ACTION); | |
1018 | ||
1019 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
1020 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1021 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
1022 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
1023 | ||
1024 | capab = (u16)(policy << 1); /* bit 1 aggregation policy */ | |
1025 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1026 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
1027 | ||
1028 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
1029 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
1030 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
1031 | ||
1032 | ieee80211_sta_tx(dev, skb, 0); | |
1033 | ||
1034 | return; | |
1035 | } | |
1036 | ||
eadc8d9e RR |
1037 | void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, |
1038 | u16 tid, u8 dialog_token, u16 start_seq_num, | |
1039 | u16 agg_size, u16 timeout) | |
1040 | { | |
1041 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1042 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1043 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1044 | struct sk_buff *skb; | |
1045 | struct ieee80211_mgmt *mgmt; | |
1046 | u16 capab; | |
1047 | ||
1048 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + | |
1049 | sizeof(mgmt->u.action.u.addba_req)); | |
1050 | ||
1051 | ||
1052 | if (!skb) { | |
1053 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1054 | "for addba request frame\n", dev->name); | |
1055 | return; | |
1056 | } | |
1057 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1058 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1059 | memset(mgmt, 0, 24); | |
1060 | memcpy(mgmt->da, da, ETH_ALEN); | |
1061 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
1062 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) | |
1063 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); | |
1064 | else | |
1065 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1066 | ||
1067 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1068 | IEEE80211_STYPE_ACTION); | |
1069 | ||
1070 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); | |
1071 | ||
1072 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1073 | mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; | |
1074 | ||
1075 | mgmt->u.action.u.addba_req.dialog_token = dialog_token; | |
1076 | capab = (u16)(1 << 1); /* bit 1 aggregation policy */ | |
1077 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ | |
1078 | capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ | |
1079 | ||
1080 | mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); | |
1081 | ||
1082 | mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); | |
1083 | mgmt->u.action.u.addba_req.start_seq_num = | |
1084 | cpu_to_le16(start_seq_num << 4); | |
1085 | ||
1086 | ieee80211_sta_tx(dev, skb, 0); | |
1087 | } | |
1088 | ||
9f985b0e RR |
1089 | static void ieee80211_sta_process_addba_request(struct net_device *dev, |
1090 | struct ieee80211_mgmt *mgmt, | |
1091 | size_t len) | |
1092 | { | |
1093 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
07db2183 RR |
1094 | struct ieee80211_hw *hw = &local->hw; |
1095 | struct ieee80211_conf *conf = &hw->conf; | |
9f985b0e | 1096 | struct sta_info *sta; |
07db2183 RR |
1097 | struct tid_ampdu_rx *tid_agg_rx; |
1098 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num, status; | |
9f985b0e | 1099 | u8 dialog_token; |
07db2183 RR |
1100 | int ret = -EOPNOTSUPP; |
1101 | DECLARE_MAC_BUF(mac); | |
9f985b0e RR |
1102 | |
1103 | sta = sta_info_get(local, mgmt->sa); | |
1104 | if (!sta) | |
1105 | return; | |
1106 | ||
1107 | /* extract session parameters from addba request frame */ | |
1108 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
1109 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
07db2183 RR |
1110 | start_seq_num = |
1111 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
9f985b0e RR |
1112 | |
1113 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1114 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
1115 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1116 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
1117 | ||
9f985b0e RR |
1118 | status = WLAN_STATUS_REQUEST_DECLINED; |
1119 | ||
07db2183 RR |
1120 | /* sanity check for incoming parameters: |
1121 | * check if configuration can support the BA policy | |
1122 | * and if buffer size does not exceeds max value */ | |
1123 | if (((ba_policy != 1) | |
1124 | && (!(conf->ht_conf.cap & IEEE80211_HT_CAP_DELAY_BA))) | |
1125 | || (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
1126 | status = WLAN_STATUS_INVALID_QOS_PARAM; | |
1127 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1128 | if (net_ratelimit()) | |
1129 | printk(KERN_DEBUG "Block Ack Req with bad params from " | |
1130 | "%s on tid %u. policy %d, buffer size %d\n", | |
1131 | print_mac(mac, mgmt->sa), tid, ba_policy, | |
1132 | buf_size); | |
1133 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1134 | goto end_no_lock; | |
1135 | } | |
1136 | /* determine default buffer size */ | |
1137 | if (buf_size == 0) { | |
8318d78a JB |
1138 | struct ieee80211_supported_band *sband; |
1139 | ||
1140 | sband = local->hw.wiphy->bands[conf->channel->band]; | |
07db2183 | 1141 | buf_size = IEEE80211_MIN_AMPDU_BUF; |
8318d78a | 1142 | buf_size = buf_size << sband->ht_info.ampdu_factor; |
07db2183 RR |
1143 | } |
1144 | ||
1145 | tid_agg_rx = &sta->ampdu_mlme.tid_rx[tid]; | |
1146 | ||
1147 | /* examine state machine */ | |
1148 | spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1149 | ||
1150 | if (tid_agg_rx->state != HT_AGG_STATE_IDLE) { | |
1151 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1152 | if (net_ratelimit()) | |
1153 | printk(KERN_DEBUG "unexpected Block Ack Req from " | |
1154 | "%s on tid %u\n", | |
1155 | print_mac(mac, mgmt->sa), tid); | |
1156 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1157 | goto end; | |
1158 | } | |
1159 | ||
1160 | /* prepare reordering buffer */ | |
1161 | tid_agg_rx->reorder_buf = | |
1162 | kmalloc(buf_size * sizeof(struct sk_buf *), GFP_ATOMIC); | |
03147dfc JB |
1163 | if (!tid_agg_rx->reorder_buf) { |
1164 | if (net_ratelimit()) | |
1165 | printk(KERN_ERR "can not allocate reordering buffer " | |
1166 | "to tid %d\n", tid); | |
07db2183 RR |
1167 | goto end; |
1168 | } | |
1169 | memset(tid_agg_rx->reorder_buf, 0, | |
1170 | buf_size * sizeof(struct sk_buf *)); | |
1171 | ||
1172 | if (local->ops->ampdu_action) | |
1173 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, | |
0df3ef45 | 1174 | sta->addr, tid, &start_seq_num); |
07db2183 RR |
1175 | #ifdef CONFIG_MAC80211_HT_DEBUG |
1176 | printk(KERN_DEBUG "Rx A-MPDU on tid %d result %d", tid, ret); | |
1177 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1178 | ||
1179 | if (ret) { | |
1180 | kfree(tid_agg_rx->reorder_buf); | |
1181 | goto end; | |
1182 | } | |
1183 | ||
1184 | /* change state and send addba resp */ | |
1185 | tid_agg_rx->state = HT_AGG_STATE_OPERATIONAL; | |
1186 | tid_agg_rx->dialog_token = dialog_token; | |
1187 | tid_agg_rx->ssn = start_seq_num; | |
1188 | tid_agg_rx->head_seq_num = start_seq_num; | |
1189 | tid_agg_rx->buf_size = buf_size; | |
1190 | tid_agg_rx->timeout = timeout; | |
1191 | tid_agg_rx->stored_mpdu_num = 0; | |
1192 | status = WLAN_STATUS_SUCCESS; | |
1193 | end: | |
1194 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1195 | ||
1196 | end_no_lock: | |
9f985b0e RR |
1197 | ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token, |
1198 | status, 1, buf_size, timeout); | |
1199 | sta_info_put(sta); | |
1200 | } | |
f0706e82 | 1201 | |
eadc8d9e RR |
1202 | static void ieee80211_sta_process_addba_resp(struct net_device *dev, |
1203 | struct ieee80211_mgmt *mgmt, | |
1204 | size_t len) | |
1205 | { | |
1206 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1207 | struct ieee80211_hw *hw = &local->hw; | |
1208 | struct sta_info *sta; | |
1209 | u16 capab; | |
1210 | u16 tid; | |
1211 | u8 *state; | |
1212 | ||
1213 | sta = sta_info_get(local, mgmt->sa); | |
1214 | if (!sta) | |
1215 | return; | |
1216 | ||
1217 | capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); | |
1218 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1219 | ||
1220 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
1221 | ||
1222 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1223 | ||
1224 | if (mgmt->u.action.u.addba_resp.dialog_token != | |
1225 | sta->ampdu_mlme.tid_tx[tid].dialog_token) { | |
1226 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1227 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1228 | printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); | |
1229 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1230 | sta_info_put(sta); | |
1231 | return; | |
1232 | } | |
1233 | ||
1234 | del_timer_sync(&sta->ampdu_mlme.tid_tx[tid].addba_resp_timer); | |
1235 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1236 | printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); | |
1237 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1238 | if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) | |
1239 | == WLAN_STATUS_SUCCESS) { | |
1240 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
1241 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1242 | printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:" | |
1243 | "%d\n", *state); | |
1244 | sta_info_put(sta); | |
1245 | return; | |
1246 | } | |
1247 | ||
1248 | if (*state & HT_ADDBA_RECEIVED_MSK) | |
1249 | printk(KERN_DEBUG "double addBA response\n"); | |
1250 | ||
1251 | *state |= HT_ADDBA_RECEIVED_MSK; | |
1252 | sta->ampdu_mlme.tid_tx[tid].addba_req_num = 0; | |
1253 | ||
1254 | if (*state == HT_AGG_STATE_OPERATIONAL) { | |
1255 | printk(KERN_DEBUG "Aggregation on for tid %d \n", tid); | |
1256 | ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); | |
1257 | } | |
1258 | ||
1259 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1260 | printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid); | |
1261 | } else { | |
1262 | printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid); | |
1263 | ||
1264 | sta->ampdu_mlme.tid_tx[tid].addba_req_num++; | |
1265 | /* this will allow the state check in stop_BA_session */ | |
1266 | *state = HT_AGG_STATE_OPERATIONAL; | |
1267 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1268 | ieee80211_stop_tx_ba_session(hw, sta->addr, tid, | |
1269 | WLAN_BACK_INITIATOR); | |
1270 | } | |
1271 | sta_info_put(sta); | |
1272 | } | |
1273 | ||
1274 | void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, | |
1275 | u16 initiator, u16 reason_code) | |
07db2183 RR |
1276 | { |
1277 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1278 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1279 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
1280 | struct sk_buff *skb; | |
1281 | struct ieee80211_mgmt *mgmt; | |
1282 | u16 params; | |
1283 | ||
1284 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + | |
1285 | sizeof(mgmt->u.action.u.delba)); | |
1286 | ||
1287 | if (!skb) { | |
1288 | printk(KERN_ERR "%s: failed to allocate buffer " | |
1289 | "for delba frame\n", dev->name); | |
1290 | return; | |
1291 | } | |
1292 | ||
1293 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
1294 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); | |
1295 | memset(mgmt, 0, 24); | |
1296 | memcpy(mgmt->da, da, ETH_ALEN); | |
1297 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
51fb61e7 | 1298 | if (sdata->vif.type == IEEE80211_IF_TYPE_AP) |
07db2183 RR |
1299 | memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); |
1300 | else | |
1301 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
1302 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
1303 | IEEE80211_STYPE_ACTION); | |
1304 | ||
1305 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
1306 | ||
1307 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
1308 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
1309 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
1310 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
1311 | ||
1312 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
1313 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
1314 | ||
1315 | ieee80211_sta_tx(dev, skb, 0); | |
1316 | } | |
1317 | ||
1318 | void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, | |
1319 | u16 initiator, u16 reason) | |
1320 | { | |
1321 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1322 | struct ieee80211_hw *hw = &local->hw; | |
1323 | struct sta_info *sta; | |
b580781e | 1324 | int ret, i; |
07db2183 RR |
1325 | |
1326 | sta = sta_info_get(local, ra); | |
1327 | if (!sta) | |
1328 | return; | |
1329 | ||
1330 | /* check if TID is in operational state */ | |
1331 | spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1332 | if (sta->ampdu_mlme.tid_rx[tid].state | |
1333 | != HT_AGG_STATE_OPERATIONAL) { | |
1334 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
07db2183 RR |
1335 | sta_info_put(sta); |
1336 | return; | |
1337 | } | |
1338 | sta->ampdu_mlme.tid_rx[tid].state = | |
1339 | HT_AGG_STATE_REQ_STOP_BA_MSK | | |
1340 | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); | |
1341 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); | |
1342 | ||
1343 | /* stop HW Rx aggregation. ampdu_action existence | |
1344 | * already verified in session init so we add the BUG_ON */ | |
1345 | BUG_ON(!local->ops->ampdu_action); | |
1346 | ||
1347 | ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, | |
0df3ef45 | 1348 | ra, tid, NULL); |
07db2183 RR |
1349 | if (ret) |
1350 | printk(KERN_DEBUG "HW problem - can not stop rx " | |
1351 | "aggergation for tid %d\n", tid); | |
1352 | ||
1353 | /* shutdown timer has not expired */ | |
1354 | if (initiator != WLAN_BACK_TIMER) | |
1355 | del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]. | |
1356 | session_timer); | |
1357 | ||
1358 | /* check if this is a self generated aggregation halt */ | |
1359 | if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) | |
1360 | ieee80211_send_delba(dev, ra, tid, 0, reason); | |
1361 | ||
1362 | /* free the reordering buffer */ | |
b580781e RR |
1363 | for (i = 0; i < sta->ampdu_mlme.tid_rx[tid].buf_size; i++) { |
1364 | if (sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]) { | |
1365 | /* release the reordered frames */ | |
1366 | dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]); | |
1367 | sta->ampdu_mlme.tid_rx[tid].stored_mpdu_num--; | |
1368 | sta->ampdu_mlme.tid_rx[tid].reorder_buf[i] = NULL; | |
1369 | } | |
1370 | } | |
07db2183 RR |
1371 | kfree(sta->ampdu_mlme.tid_rx[tid].reorder_buf); |
1372 | ||
1373 | sta->ampdu_mlme.tid_rx[tid].state = HT_AGG_STATE_IDLE; | |
1374 | sta_info_put(sta); | |
1375 | } | |
1376 | ||
eadc8d9e | 1377 | |
688b88a4 RR |
1378 | static void ieee80211_sta_process_delba(struct net_device *dev, |
1379 | struct ieee80211_mgmt *mgmt, size_t len) | |
1380 | { | |
1381 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1382 | struct sta_info *sta; | |
1383 | u16 tid, params; | |
1384 | u16 initiator; | |
1385 | DECLARE_MAC_BUF(mac); | |
1386 | ||
1387 | sta = sta_info_get(local, mgmt->sa); | |
1388 | if (!sta) | |
1389 | return; | |
1390 | ||
1391 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
1392 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
1393 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
1394 | ||
1395 | #ifdef CONFIG_MAC80211_HT_DEBUG | |
1396 | if (net_ratelimit()) | |
d92684e6 RR |
1397 | printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", |
1398 | print_mac(mac, mgmt->sa), | |
1399 | initiator ? "recipient" : "initiator", tid, | |
688b88a4 RR |
1400 | mgmt->u.action.u.delba.reason_code); |
1401 | #endif /* CONFIG_MAC80211_HT_DEBUG */ | |
1402 | ||
1403 | if (initiator == WLAN_BACK_INITIATOR) | |
1404 | ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, | |
1405 | WLAN_BACK_INITIATOR, 0); | |
d92684e6 RR |
1406 | else { /* WLAN_BACK_RECIPIENT */ |
1407 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1408 | sta->ampdu_mlme.tid_tx[tid].state = | |
1409 | HT_AGG_STATE_OPERATIONAL; | |
1410 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1411 | ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, | |
1412 | WLAN_BACK_RECIPIENT); | |
1413 | } | |
688b88a4 RR |
1414 | sta_info_put(sta); |
1415 | } | |
1416 | ||
eadc8d9e RR |
1417 | /* |
1418 | * After sending add Block Ack request we activated a timer until | |
1419 | * add Block Ack response will arrive from the recipient. | |
1420 | * If this timer expires sta_addba_resp_timer_expired will be executed. | |
1421 | */ | |
1422 | void sta_addba_resp_timer_expired(unsigned long data) | |
1423 | { | |
1424 | /* not an elegant detour, but there is no choice as the timer passes | |
1425 | * only one argument, and both sta_info and TID are needed, so init | |
1426 | * flow in sta_info_add gives the TID as data, while the timer_to_id | |
1427 | * array gives the sta through container_of */ | |
1428 | u16 tid = *(int *)data; | |
1429 | struct sta_info *temp_sta = container_of((void *)data, | |
1430 | struct sta_info, timer_to_tid[tid]); | |
1431 | ||
1432 | struct ieee80211_local *local = temp_sta->local; | |
1433 | struct ieee80211_hw *hw = &local->hw; | |
1434 | struct sta_info *sta; | |
1435 | u8 *state; | |
1436 | ||
1437 | sta = sta_info_get(local, temp_sta->addr); | |
1438 | if (!sta) | |
1439 | return; | |
1440 | ||
1441 | state = &sta->ampdu_mlme.tid_tx[tid].state; | |
1442 | /* check if the TID waits for addBA response */ | |
1443 | spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1444 | if (!(*state & HT_ADDBA_REQUESTED_MSK)) { | |
1445 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1446 | *state = HT_AGG_STATE_IDLE; | |
1447 | printk(KERN_DEBUG "timer expired on tid %d but we are not " | |
1448 | "expecting addBA response there", tid); | |
1449 | goto timer_expired_exit; | |
1450 | } | |
1451 | ||
1452 | printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); | |
1453 | ||
1454 | /* go through the state check in stop_BA_session */ | |
1455 | *state = HT_AGG_STATE_OPERATIONAL; | |
1456 | spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); | |
1457 | ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, | |
1458 | WLAN_BACK_INITIATOR); | |
1459 | ||
1460 | timer_expired_exit: | |
1461 | sta_info_put(sta); | |
1462 | } | |
1463 | ||
07db2183 RR |
1464 | /* |
1465 | * After receiving Block Ack Request (BAR) we activated a | |
1466 | * timer after each frame arrives from the originator. | |
1467 | * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. | |
1468 | */ | |
1469 | void sta_rx_agg_session_timer_expired(unsigned long data) | |
1470 | { | |
1471 | /* not an elegant detour, but there is no choice as the timer passes | |
1472 | * only one argument, and verious sta_info are needed here, so init | |
1473 | * flow in sta_info_add gives the TID as data, while the timer_to_id | |
1474 | * array gives the sta through container_of */ | |
1475 | u8 *ptid = (u8 *)data; | |
1476 | u8 *timer_to_id = ptid - *ptid; | |
1477 | struct sta_info *sta = container_of(timer_to_id, struct sta_info, | |
1478 | timer_to_tid[0]); | |
1479 | ||
1480 | printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); | |
1481 | ieee80211_sta_stop_rx_ba_session(sta->dev, sta->addr, (u16)*ptid, | |
1482 | WLAN_BACK_TIMER, | |
1483 | WLAN_REASON_QSTA_TIMEOUT); | |
1484 | } | |
1485 | ||
1486 | ||
f0706e82 JB |
1487 | static void ieee80211_rx_mgmt_auth(struct net_device *dev, |
1488 | struct ieee80211_if_sta *ifsta, | |
1489 | struct ieee80211_mgmt *mgmt, | |
1490 | size_t len) | |
1491 | { | |
1492 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
1493 | u16 auth_alg, auth_transaction, status_code; | |
0795af57 | 1494 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1495 | |
1496 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
51fb61e7 | 1497 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 1498 | printk(KERN_DEBUG "%s: authentication frame received from " |
0795af57 JP |
1499 | "%s, but not in authenticate state - ignored\n", |
1500 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1501 | return; |
1502 | } | |
1503 | ||
1504 | if (len < 24 + 6) { | |
1505 | printk(KERN_DEBUG "%s: too short (%zd) authentication frame " | |
0795af57 JP |
1506 | "received from %s - ignored\n", |
1507 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1508 | return; |
1509 | } | |
1510 | ||
51fb61e7 | 1511 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1512 | memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { |
1513 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1514 | "unknown AP (SA=%s BSSID=%s) - " |
1515 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1516 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1517 | return; |
1518 | } | |
1519 | ||
51fb61e7 | 1520 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
f0706e82 JB |
1521 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) { |
1522 | printk(KERN_DEBUG "%s: authentication frame received from " | |
0795af57 JP |
1523 | "unknown BSSID (SA=%s BSSID=%s) - " |
1524 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1525 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1526 | return; |
1527 | } | |
1528 | ||
1529 | auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg); | |
1530 | auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction); | |
1531 | status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
1532 | ||
0795af57 | 1533 | printk(KERN_DEBUG "%s: RX authentication from %s (alg=%d " |
f0706e82 | 1534 | "transaction=%d status=%d)\n", |
0795af57 | 1535 | dev->name, print_mac(mac, mgmt->sa), auth_alg, |
f0706e82 JB |
1536 | auth_transaction, status_code); |
1537 | ||
51fb61e7 | 1538 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 JB |
1539 | /* IEEE 802.11 standard does not require authentication in IBSS |
1540 | * networks and most implementations do not seem to use it. | |
1541 | * However, try to reply to authentication attempts if someone | |
1542 | * has actually implemented this. | |
1543 | * TODO: Could implement shared key authentication. */ | |
1544 | if (auth_alg != WLAN_AUTH_OPEN || auth_transaction != 1) { | |
1545 | printk(KERN_DEBUG "%s: unexpected IBSS authentication " | |
1546 | "frame (alg=%d transaction=%d)\n", | |
1547 | dev->name, auth_alg, auth_transaction); | |
1548 | return; | |
1549 | } | |
1550 | ieee80211_send_auth(dev, ifsta, 2, NULL, 0, 0); | |
1551 | } | |
1552 | ||
1553 | if (auth_alg != ifsta->auth_alg || | |
1554 | auth_transaction != ifsta->auth_transaction) { | |
1555 | printk(KERN_DEBUG "%s: unexpected authentication frame " | |
1556 | "(alg=%d transaction=%d)\n", | |
1557 | dev->name, auth_alg, auth_transaction); | |
1558 | return; | |
1559 | } | |
1560 | ||
1561 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1562 | printk(KERN_DEBUG "%s: AP denied authentication (auth_alg=%d " | |
1563 | "code=%d)\n", dev->name, ifsta->auth_alg, status_code); | |
1564 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG) { | |
1565 | u8 algs[3]; | |
1566 | const int num_algs = ARRAY_SIZE(algs); | |
1567 | int i, pos; | |
1568 | algs[0] = algs[1] = algs[2] = 0xff; | |
1569 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
1570 | algs[0] = WLAN_AUTH_OPEN; | |
1571 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
1572 | algs[1] = WLAN_AUTH_SHARED_KEY; | |
1573 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
1574 | algs[2] = WLAN_AUTH_LEAP; | |
1575 | if (ifsta->auth_alg == WLAN_AUTH_OPEN) | |
1576 | pos = 0; | |
1577 | else if (ifsta->auth_alg == WLAN_AUTH_SHARED_KEY) | |
1578 | pos = 1; | |
1579 | else | |
1580 | pos = 2; | |
1581 | for (i = 0; i < num_algs; i++) { | |
1582 | pos++; | |
1583 | if (pos >= num_algs) | |
1584 | pos = 0; | |
1585 | if (algs[pos] == ifsta->auth_alg || | |
1586 | algs[pos] == 0xff) | |
1587 | continue; | |
1588 | if (algs[pos] == WLAN_AUTH_SHARED_KEY && | |
1589 | !ieee80211_sta_wep_configured(dev)) | |
1590 | continue; | |
1591 | ifsta->auth_alg = algs[pos]; | |
1592 | printk(KERN_DEBUG "%s: set auth_alg=%d for " | |
1593 | "next try\n", | |
1594 | dev->name, ifsta->auth_alg); | |
1595 | break; | |
1596 | } | |
1597 | } | |
1598 | return; | |
1599 | } | |
1600 | ||
1601 | switch (ifsta->auth_alg) { | |
1602 | case WLAN_AUTH_OPEN: | |
1603 | case WLAN_AUTH_LEAP: | |
1604 | ieee80211_auth_completed(dev, ifsta); | |
1605 | break; | |
1606 | case WLAN_AUTH_SHARED_KEY: | |
1607 | if (ifsta->auth_transaction == 4) | |
1608 | ieee80211_auth_completed(dev, ifsta); | |
1609 | else | |
1610 | ieee80211_auth_challenge(dev, ifsta, mgmt, len); | |
1611 | break; | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | ||
1616 | static void ieee80211_rx_mgmt_deauth(struct net_device *dev, | |
1617 | struct ieee80211_if_sta *ifsta, | |
1618 | struct ieee80211_mgmt *mgmt, | |
1619 | size_t len) | |
1620 | { | |
1621 | u16 reason_code; | |
0795af57 | 1622 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1623 | |
1624 | if (len < 24 + 2) { | |
1625 | printk(KERN_DEBUG "%s: too short (%zd) deauthentication frame " | |
0795af57 JP |
1626 | "received from %s - ignored\n", |
1627 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1628 | return; |
1629 | } | |
1630 | ||
1631 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1632 | printk(KERN_DEBUG "%s: deauthentication frame received from " | |
0795af57 JP |
1633 | "unknown AP (SA=%s BSSID=%s) - " |
1634 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1635 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1636 | return; |
1637 | } | |
1638 | ||
1639 | reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); | |
1640 | ||
0795af57 | 1641 | printk(KERN_DEBUG "%s: RX deauthentication from %s" |
f0706e82 | 1642 | " (reason=%d)\n", |
0795af57 | 1643 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1644 | |
d6f2da5b | 1645 | if (ifsta->flags & IEEE80211_STA_AUTHENTICATED) { |
f0706e82 JB |
1646 | printk(KERN_DEBUG "%s: deauthenticated\n", dev->name); |
1647 | } | |
1648 | ||
1649 | if (ifsta->state == IEEE80211_AUTHENTICATE || | |
1650 | ifsta->state == IEEE80211_ASSOCIATE || | |
1651 | ifsta->state == IEEE80211_ASSOCIATED) { | |
1652 | ifsta->state = IEEE80211_AUTHENTICATE; | |
1653 | mod_timer(&ifsta->timer, jiffies + | |
1654 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1655 | } | |
1656 | ||
1657 | ieee80211_set_disassoc(dev, ifsta, 1); | |
d6f2da5b | 1658 | ifsta->flags &= ~IEEE80211_STA_AUTHENTICATED; |
f0706e82 JB |
1659 | } |
1660 | ||
1661 | ||
1662 | static void ieee80211_rx_mgmt_disassoc(struct net_device *dev, | |
1663 | struct ieee80211_if_sta *ifsta, | |
1664 | struct ieee80211_mgmt *mgmt, | |
1665 | size_t len) | |
1666 | { | |
1667 | u16 reason_code; | |
0795af57 | 1668 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
1669 | |
1670 | if (len < 24 + 2) { | |
1671 | printk(KERN_DEBUG "%s: too short (%zd) disassociation frame " | |
0795af57 JP |
1672 | "received from %s - ignored\n", |
1673 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1674 | return; |
1675 | } | |
1676 | ||
1677 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1678 | printk(KERN_DEBUG "%s: disassociation frame received from " | |
0795af57 JP |
1679 | "unknown AP (SA=%s BSSID=%s) - " |
1680 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1681 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1682 | return; |
1683 | } | |
1684 | ||
1685 | reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); | |
1686 | ||
0795af57 | 1687 | printk(KERN_DEBUG "%s: RX disassociation from %s" |
f0706e82 | 1688 | " (reason=%d)\n", |
0795af57 | 1689 | dev->name, print_mac(mac, mgmt->sa), reason_code); |
f0706e82 | 1690 | |
d6f2da5b | 1691 | if (ifsta->flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
1692 | printk(KERN_DEBUG "%s: disassociated\n", dev->name); |
1693 | ||
1694 | if (ifsta->state == IEEE80211_ASSOCIATED) { | |
1695 | ifsta->state = IEEE80211_ASSOCIATE; | |
1696 | mod_timer(&ifsta->timer, jiffies + | |
1697 | IEEE80211_RETRY_AUTH_INTERVAL); | |
1698 | } | |
1699 | ||
1700 | ieee80211_set_disassoc(dev, ifsta, 0); | |
1701 | } | |
1702 | ||
1703 | ||
471b3efd | 1704 | static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, |
f0706e82 JB |
1705 | struct ieee80211_if_sta *ifsta, |
1706 | struct ieee80211_mgmt *mgmt, | |
1707 | size_t len, | |
1708 | int reassoc) | |
1709 | { | |
471b3efd JB |
1710 | struct ieee80211_local *local = sdata->local; |
1711 | struct net_device *dev = sdata->dev; | |
8318d78a | 1712 | struct ieee80211_supported_band *sband; |
f0706e82 | 1713 | struct sta_info *sta; |
8318d78a | 1714 | u64 rates, basic_rates; |
f0706e82 JB |
1715 | u16 capab_info, status_code, aid; |
1716 | struct ieee802_11_elems elems; | |
471b3efd | 1717 | struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; |
f0706e82 JB |
1718 | u8 *pos; |
1719 | int i, j; | |
0795af57 | 1720 | DECLARE_MAC_BUF(mac); |
8318d78a | 1721 | bool have_higher_than_11mbit = false; |
f0706e82 JB |
1722 | |
1723 | /* AssocResp and ReassocResp have identical structure, so process both | |
1724 | * of them in this function. */ | |
1725 | ||
1726 | if (ifsta->state != IEEE80211_ASSOCIATE) { | |
1727 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1728 | "%s, but not in associate state - ignored\n", |
1729 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1730 | return; |
1731 | } | |
1732 | ||
1733 | if (len < 24 + 6) { | |
1734 | printk(KERN_DEBUG "%s: too short (%zd) association frame " | |
0795af57 JP |
1735 | "received from %s - ignored\n", |
1736 | dev->name, len, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
1737 | return; |
1738 | } | |
1739 | ||
1740 | if (memcmp(ifsta->bssid, mgmt->sa, ETH_ALEN) != 0) { | |
1741 | printk(KERN_DEBUG "%s: association frame received from " | |
0795af57 JP |
1742 | "unknown AP (SA=%s BSSID=%s) - " |
1743 | "ignored\n", dev->name, print_mac(mac, mgmt->sa), | |
1744 | print_mac(mac, mgmt->bssid)); | |
f0706e82 JB |
1745 | return; |
1746 | } | |
1747 | ||
1748 | capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); | |
1749 | status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); | |
1750 | aid = le16_to_cpu(mgmt->u.assoc_resp.aid); | |
f0706e82 | 1751 | |
0795af57 | 1752 | printk(KERN_DEBUG "%s: RX %sssocResp from %s (capab=0x%x " |
f0706e82 | 1753 | "status=%d aid=%d)\n", |
0795af57 | 1754 | dev->name, reassoc ? "Rea" : "A", print_mac(mac, mgmt->sa), |
ddd68587 | 1755 | capab_info, status_code, (u16)(aid & ~(BIT(15) | BIT(14)))); |
f0706e82 JB |
1756 | |
1757 | if (status_code != WLAN_STATUS_SUCCESS) { | |
1758 | printk(KERN_DEBUG "%s: AP denied association (code=%d)\n", | |
1759 | dev->name, status_code); | |
8a69aa93 DD |
1760 | /* if this was a reassociation, ensure we try a "full" |
1761 | * association next time. This works around some broken APs | |
1762 | * which do not correctly reject reassociation requests. */ | |
d6f2da5b | 1763 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
1764 | return; |
1765 | } | |
1766 | ||
1dd84aa2 JB |
1767 | if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) |
1768 | printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " | |
1769 | "set\n", dev->name, aid); | |
1770 | aid &= ~(BIT(15) | BIT(14)); | |
1771 | ||
f0706e82 | 1772 | pos = mgmt->u.assoc_resp.variable; |
67a4cce4 | 1773 | ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); |
f0706e82 JB |
1774 | |
1775 | if (!elems.supp_rates) { | |
1776 | printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", | |
1777 | dev->name); | |
1778 | return; | |
1779 | } | |
1780 | ||
1781 | printk(KERN_DEBUG "%s: associated\n", dev->name); | |
1782 | ifsta->aid = aid; | |
1783 | ifsta->ap_capab = capab_info; | |
1784 | ||
1785 | kfree(ifsta->assocresp_ies); | |
1786 | ifsta->assocresp_ies_len = len - (pos - (u8 *) mgmt); | |
0ec0b7ac | 1787 | ifsta->assocresp_ies = kmalloc(ifsta->assocresp_ies_len, GFP_KERNEL); |
f0706e82 JB |
1788 | if (ifsta->assocresp_ies) |
1789 | memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); | |
1790 | ||
f0706e82 JB |
1791 | /* Add STA entry for the AP */ |
1792 | sta = sta_info_get(local, ifsta->bssid); | |
1793 | if (!sta) { | |
1794 | struct ieee80211_sta_bss *bss; | |
0ec0b7ac | 1795 | sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL); |
43ba7e95 | 1796 | if (IS_ERR(sta)) { |
f0706e82 | 1797 | printk(KERN_DEBUG "%s: failed to add STA entry for the" |
43ba7e95 | 1798 | " AP (error %ld)\n", dev->name, PTR_ERR(sta)); |
f0706e82 JB |
1799 | return; |
1800 | } | |
65c107ab | 1801 | bss = ieee80211_rx_bss_get(dev, ifsta->bssid, |
8318d78a | 1802 | local->hw.conf.channel->center_freq, |
cffdd30d | 1803 | ifsta->ssid, ifsta->ssid_len); |
f0706e82 JB |
1804 | if (bss) { |
1805 | sta->last_rssi = bss->rssi; | |
1806 | sta->last_signal = bss->signal; | |
1807 | sta->last_noise = bss->noise; | |
1808 | ieee80211_rx_bss_put(dev, bss); | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | sta->dev = dev; | |
238814fd JB |
1813 | sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | |
1814 | WLAN_STA_AUTHORIZED; | |
f0706e82 JB |
1815 | |
1816 | rates = 0; | |
8318d78a JB |
1817 | basic_rates = 0; |
1818 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
1819 | ||
f0706e82 JB |
1820 | for (i = 0; i < elems.supp_rates_len; i++) { |
1821 | int rate = (elems.supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
1822 | |
1823 | if (rate > 110) | |
1824 | have_higher_than_11mbit = true; | |
1825 | ||
1826 | for (j = 0; j < sband->n_bitrates; j++) { | |
1827 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 1828 | rates |= BIT(j); |
8318d78a JB |
1829 | if (elems.supp_rates[i] & 0x80) |
1830 | basic_rates |= BIT(j); | |
1831 | } | |
f0706e82 | 1832 | } |
8318d78a | 1833 | |
f0706e82 JB |
1834 | for (i = 0; i < elems.ext_supp_rates_len; i++) { |
1835 | int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; | |
8318d78a JB |
1836 | |
1837 | if (rate > 110) | |
1838 | have_higher_than_11mbit = true; | |
1839 | ||
1840 | for (j = 0; j < sband->n_bitrates; j++) { | |
1841 | if (sband->bitrates[j].bitrate == rate) | |
f0706e82 | 1842 | rates |= BIT(j); |
8318d78a JB |
1843 | if (elems.ext_supp_rates[i] & 0x80) |
1844 | basic_rates |= BIT(j); | |
1845 | } | |
f0706e82 | 1846 | } |
8318d78a JB |
1847 | |
1848 | sta->supp_rates[local->hw.conf.channel->band] = rates; | |
1849 | sdata->basic_rates = basic_rates; | |
1850 | ||
1851 | /* cf. IEEE 802.11 9.2.12 */ | |
1852 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
1853 | have_higher_than_11mbit) | |
1854 | sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; | |
1855 | else | |
1856 | sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; | |
f0706e82 | 1857 | |
d3c990fb RR |
1858 | if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && |
1859 | local->ops->conf_ht) { | |
1860 | struct ieee80211_ht_bss_info bss_info; | |
1861 | ||
1862 | ieee80211_ht_cap_ie_to_ht_info( | |
1863 | (struct ieee80211_ht_cap *) | |
1864 | elems.ht_cap_elem, &sta->ht_info); | |
1865 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
1866 | (struct ieee80211_ht_addt_info *) | |
1867 | elems.ht_info_elem, &bss_info); | |
1868 | ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info); | |
1869 | } | |
1870 | ||
f0706e82 JB |
1871 | rate_control_rate_init(sta, local); |
1872 | ||
d6f2da5b | 1873 | if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
1874 | sta->flags |= WLAN_STA_WME; |
1875 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, | |
1876 | elems.wmm_param_len); | |
1877 | } | |
1878 | ||
8318d78a JB |
1879 | /* set AID, ieee80211_set_associated() will tell the driver */ |
1880 | bss_conf->aid = aid; | |
1881 | ieee80211_set_associated(dev, ifsta, 1); | |
f0706e82 JB |
1882 | |
1883 | sta_info_put(sta); | |
1884 | ||
1885 | ieee80211_associated(dev, ifsta); | |
1886 | } | |
1887 | ||
1888 | ||
1889 | /* Caller must hold local->sta_bss_lock */ | |
1890 | static void __ieee80211_rx_bss_hash_add(struct net_device *dev, | |
1891 | struct ieee80211_sta_bss *bss) | |
1892 | { | |
1893 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1894 | bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
1895 | local->sta_bss_hash[STA_HASH(bss->bssid)] = bss; | |
1896 | } | |
1897 | ||
1898 | ||
1899 | /* Caller must hold local->sta_bss_lock */ | |
1900 | static void __ieee80211_rx_bss_hash_del(struct net_device *dev, | |
1901 | struct ieee80211_sta_bss *bss) | |
1902 | { | |
1903 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1904 | struct ieee80211_sta_bss *b, *prev = NULL; | |
1905 | b = local->sta_bss_hash[STA_HASH(bss->bssid)]; | |
1906 | while (b) { | |
1907 | if (b == bss) { | |
1908 | if (!prev) | |
1909 | local->sta_bss_hash[STA_HASH(bss->bssid)] = | |
1910 | bss->hnext; | |
1911 | else | |
1912 | prev->hnext = bss->hnext; | |
1913 | break; | |
1914 | } | |
1915 | prev = b; | |
1916 | b = b->hnext; | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | ||
1921 | static struct ieee80211_sta_bss * | |
8318d78a | 1922 | ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 1923 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
1924 | { |
1925 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1926 | struct ieee80211_sta_bss *bss; | |
1927 | ||
dd00cc48 | 1928 | bss = kzalloc(sizeof(*bss), GFP_ATOMIC); |
f0706e82 JB |
1929 | if (!bss) |
1930 | return NULL; | |
f0706e82 JB |
1931 | atomic_inc(&bss->users); |
1932 | atomic_inc(&bss->users); | |
1933 | memcpy(bss->bssid, bssid, ETH_ALEN); | |
8318d78a | 1934 | bss->freq = freq; |
cffdd30d JL |
1935 | if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { |
1936 | memcpy(bss->ssid, ssid, ssid_len); | |
1937 | bss->ssid_len = ssid_len; | |
1938 | } | |
f0706e82 JB |
1939 | |
1940 | spin_lock_bh(&local->sta_bss_lock); | |
1941 | /* TODO: order by RSSI? */ | |
1942 | list_add_tail(&bss->list, &local->sta_bss_list); | |
1943 | __ieee80211_rx_bss_hash_add(dev, bss); | |
1944 | spin_unlock_bh(&local->sta_bss_lock); | |
1945 | return bss; | |
1946 | } | |
1947 | ||
1948 | ||
1949 | static struct ieee80211_sta_bss * | |
8318d78a | 1950 | ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, |
cffdd30d | 1951 | u8 *ssid, u8 ssid_len) |
f0706e82 JB |
1952 | { |
1953 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1954 | struct ieee80211_sta_bss *bss; | |
1955 | ||
1956 | spin_lock_bh(&local->sta_bss_lock); | |
1957 | bss = local->sta_bss_hash[STA_HASH(bssid)]; | |
1958 | while (bss) { | |
cffdd30d | 1959 | if (!memcmp(bss->bssid, bssid, ETH_ALEN) && |
8318d78a | 1960 | bss->freq == freq && |
cffdd30d JL |
1961 | bss->ssid_len == ssid_len && |
1962 | (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { | |
f0706e82 JB |
1963 | atomic_inc(&bss->users); |
1964 | break; | |
1965 | } | |
1966 | bss = bss->hnext; | |
1967 | } | |
1968 | spin_unlock_bh(&local->sta_bss_lock); | |
1969 | return bss; | |
1970 | } | |
1971 | ||
1972 | ||
1973 | static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) | |
1974 | { | |
1975 | kfree(bss->wpa_ie); | |
1976 | kfree(bss->rsn_ie); | |
1977 | kfree(bss->wmm_ie); | |
c7153508 | 1978 | kfree(bss->ht_ie); |
f0706e82 JB |
1979 | kfree(bss); |
1980 | } | |
1981 | ||
1982 | ||
1983 | static void ieee80211_rx_bss_put(struct net_device *dev, | |
1984 | struct ieee80211_sta_bss *bss) | |
1985 | { | |
1986 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
1987 | if (!atomic_dec_and_test(&bss->users)) | |
1988 | return; | |
1989 | ||
1990 | spin_lock_bh(&local->sta_bss_lock); | |
1991 | __ieee80211_rx_bss_hash_del(dev, bss); | |
1992 | list_del(&bss->list); | |
1993 | spin_unlock_bh(&local->sta_bss_lock); | |
1994 | ieee80211_rx_bss_free(bss); | |
1995 | } | |
1996 | ||
1997 | ||
1998 | void ieee80211_rx_bss_list_init(struct net_device *dev) | |
1999 | { | |
2000 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2001 | spin_lock_init(&local->sta_bss_lock); | |
2002 | INIT_LIST_HEAD(&local->sta_bss_list); | |
2003 | } | |
2004 | ||
2005 | ||
2006 | void ieee80211_rx_bss_list_deinit(struct net_device *dev) | |
2007 | { | |
2008 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2009 | struct ieee80211_sta_bss *bss, *tmp; | |
2010 | ||
2011 | list_for_each_entry_safe(bss, tmp, &local->sta_bss_list, list) | |
2012 | ieee80211_rx_bss_put(dev, bss); | |
2013 | } | |
2014 | ||
2015 | ||
a607268a BR |
2016 | static int ieee80211_sta_join_ibss(struct net_device *dev, |
2017 | struct ieee80211_if_sta *ifsta, | |
2018 | struct ieee80211_sta_bss *bss) | |
2019 | { | |
2020 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2021 | int res, rates, i, j; | |
2022 | struct sk_buff *skb; | |
2023 | struct ieee80211_mgmt *mgmt; | |
2024 | struct ieee80211_tx_control control; | |
2025 | struct rate_selection ratesel; | |
2026 | u8 *pos; | |
2027 | struct ieee80211_sub_if_data *sdata; | |
2028 | struct ieee80211_supported_band *sband; | |
2029 | ||
2030 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2031 | ||
2032 | /* Remove possible STA entries from other IBSS networks. */ | |
2033 | sta_info_flush(local, NULL); | |
2034 | ||
2035 | if (local->ops->reset_tsf) { | |
2036 | /* Reset own TSF to allow time synchronization work. */ | |
2037 | local->ops->reset_tsf(local_to_hw(local)); | |
2038 | } | |
2039 | memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); | |
2040 | res = ieee80211_if_config(dev); | |
2041 | if (res) | |
2042 | return res; | |
2043 | ||
2044 | local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; | |
2045 | ||
2046 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2047 | sdata->drop_unencrypted = bss->capability & | |
2048 | WLAN_CAPABILITY_PRIVACY ? 1 : 0; | |
2049 | ||
2050 | res = ieee80211_set_freq(local, bss->freq); | |
2051 | ||
2052 | if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) { | |
2053 | printk(KERN_DEBUG "%s: IBSS not allowed on frequency " | |
2054 | "%d MHz\n", dev->name, local->oper_channel->center_freq); | |
2055 | return -1; | |
2056 | } | |
2057 | ||
2058 | /* Set beacon template */ | |
2059 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); | |
2060 | do { | |
2061 | if (!skb) | |
2062 | break; | |
2063 | ||
2064 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
2065 | ||
2066 | mgmt = (struct ieee80211_mgmt *) | |
2067 | skb_put(skb, 24 + sizeof(mgmt->u.beacon)); | |
2068 | memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); | |
2069 | mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2070 | IEEE80211_STYPE_BEACON); | |
2071 | memset(mgmt->da, 0xff, ETH_ALEN); | |
2072 | memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); | |
2073 | memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); | |
2074 | mgmt->u.beacon.beacon_int = | |
2075 | cpu_to_le16(local->hw.conf.beacon_int); | |
2076 | mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); | |
2077 | ||
2078 | pos = skb_put(skb, 2 + ifsta->ssid_len); | |
2079 | *pos++ = WLAN_EID_SSID; | |
2080 | *pos++ = ifsta->ssid_len; | |
2081 | memcpy(pos, ifsta->ssid, ifsta->ssid_len); | |
2082 | ||
2083 | rates = bss->supp_rates_len; | |
2084 | if (rates > 8) | |
2085 | rates = 8; | |
2086 | pos = skb_put(skb, 2 + rates); | |
2087 | *pos++ = WLAN_EID_SUPP_RATES; | |
2088 | *pos++ = rates; | |
2089 | memcpy(pos, bss->supp_rates, rates); | |
2090 | ||
2091 | if (bss->band == IEEE80211_BAND_2GHZ) { | |
2092 | pos = skb_put(skb, 2 + 1); | |
2093 | *pos++ = WLAN_EID_DS_PARAMS; | |
2094 | *pos++ = 1; | |
2095 | *pos++ = ieee80211_frequency_to_channel(bss->freq); | |
2096 | } | |
2097 | ||
2098 | pos = skb_put(skb, 2 + 2); | |
2099 | *pos++ = WLAN_EID_IBSS_PARAMS; | |
2100 | *pos++ = 2; | |
2101 | /* FIX: set ATIM window based on scan results */ | |
2102 | *pos++ = 0; | |
2103 | *pos++ = 0; | |
2104 | ||
2105 | if (bss->supp_rates_len > 8) { | |
2106 | rates = bss->supp_rates_len - 8; | |
2107 | pos = skb_put(skb, 2 + rates); | |
2108 | *pos++ = WLAN_EID_EXT_SUPP_RATES; | |
2109 | *pos++ = rates; | |
2110 | memcpy(pos, &bss->supp_rates[8], rates); | |
2111 | } | |
2112 | ||
2113 | memset(&control, 0, sizeof(control)); | |
2114 | rate_control_get_rate(dev, sband, skb, &ratesel); | |
2115 | if (!ratesel.rate) { | |
2116 | printk(KERN_DEBUG "%s: Failed to determine TX rate " | |
2117 | "for IBSS beacon\n", dev->name); | |
2118 | break; | |
2119 | } | |
2120 | control.vif = &sdata->vif; | |
2121 | control.tx_rate = ratesel.rate; | |
2122 | if (sdata->bss_conf.use_short_preamble && | |
2123 | ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) | |
2124 | control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE; | |
2125 | control.antenna_sel_tx = local->hw.conf.antenna_sel_tx; | |
2126 | control.flags |= IEEE80211_TXCTL_NO_ACK; | |
2127 | control.retry_limit = 1; | |
2128 | ||
2129 | ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); | |
2130 | if (ifsta->probe_resp) { | |
2131 | mgmt = (struct ieee80211_mgmt *) | |
2132 | ifsta->probe_resp->data; | |
2133 | mgmt->frame_control = | |
2134 | IEEE80211_FC(IEEE80211_FTYPE_MGMT, | |
2135 | IEEE80211_STYPE_PROBE_RESP); | |
2136 | } else { | |
2137 | printk(KERN_DEBUG "%s: Could not allocate ProbeResp " | |
2138 | "template for IBSS\n", dev->name); | |
2139 | } | |
2140 | ||
2141 | if (local->ops->beacon_update && | |
2142 | local->ops->beacon_update(local_to_hw(local), | |
2143 | skb, &control) == 0) { | |
2144 | printk(KERN_DEBUG "%s: Configured IBSS beacon " | |
2145 | "template\n", dev->name); | |
2146 | skb = NULL; | |
2147 | } | |
2148 | ||
2149 | rates = 0; | |
2150 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
2151 | for (i = 0; i < bss->supp_rates_len; i++) { | |
2152 | int bitrate = (bss->supp_rates[i] & 0x7f) * 5; | |
2153 | for (j = 0; j < sband->n_bitrates; j++) | |
2154 | if (sband->bitrates[j].bitrate == bitrate) | |
2155 | rates |= BIT(j); | |
2156 | } | |
2157 | ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; | |
2158 | } while (0); | |
2159 | ||
2160 | if (skb) { | |
2161 | printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " | |
2162 | "template\n", dev->name); | |
2163 | dev_kfree_skb(skb); | |
2164 | } | |
2165 | ||
2166 | ifsta->state = IEEE80211_IBSS_JOINED; | |
2167 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2168 | ||
2169 | ieee80211_rx_bss_put(dev, bss); | |
2170 | ||
2171 | return res; | |
2172 | } | |
2173 | ||
2174 | ||
f0706e82 JB |
2175 | static void ieee80211_rx_bss_info(struct net_device *dev, |
2176 | struct ieee80211_mgmt *mgmt, | |
2177 | size_t len, | |
2178 | struct ieee80211_rx_status *rx_status, | |
2179 | int beacon) | |
2180 | { | |
2181 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2182 | struct ieee802_11_elems elems; | |
2183 | size_t baselen; | |
8318d78a | 2184 | int freq, clen; |
f0706e82 JB |
2185 | struct ieee80211_sta_bss *bss; |
2186 | struct sta_info *sta; | |
2187 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
9d9bf77d | 2188 | u64 beacon_timestamp, rx_timestamp; |
0795af57 JP |
2189 | DECLARE_MAC_BUF(mac); |
2190 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
2191 | |
2192 | if (!beacon && memcmp(mgmt->da, dev->dev_addr, ETH_ALEN)) | |
2193 | return; /* ignore ProbeResp to foreign address */ | |
2194 | ||
2195 | #if 0 | |
0795af57 | 2196 | printk(KERN_DEBUG "%s: RX %s from %s to %s\n", |
f0706e82 | 2197 | dev->name, beacon ? "Beacon" : "Probe Response", |
0795af57 | 2198 | print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da)); |
f0706e82 JB |
2199 | #endif |
2200 | ||
2201 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2202 | if (baselen > len) | |
2203 | return; | |
2204 | ||
9d9bf77d | 2205 | beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); |
67a4cce4 | 2206 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2207 | |
51fb61e7 | 2208 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && |
f0706e82 JB |
2209 | memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && |
2210 | (sta = sta_info_get(local, mgmt->sa))) { | |
8318d78a JB |
2211 | struct ieee80211_supported_band *sband; |
2212 | struct ieee80211_rate *bitrates; | |
f0706e82 | 2213 | size_t num_rates; |
8318d78a | 2214 | u64 supp_rates, prev_rates; |
f0706e82 JB |
2215 | int i, j; |
2216 | ||
8318d78a | 2217 | sband = local->hw.wiphy->bands[rx_status->band]; |
ece8eddd | 2218 | |
8318d78a JB |
2219 | if (!sband) { |
2220 | WARN_ON(1); | |
2221 | sband = local->hw.wiphy->bands[ | |
2222 | local->hw.conf.channel->band]; | |
ece8eddd | 2223 | } |
8318d78a JB |
2224 | |
2225 | bitrates = sband->bitrates; | |
2226 | num_rates = sband->n_bitrates; | |
f0706e82 JB |
2227 | |
2228 | supp_rates = 0; | |
2229 | for (i = 0; i < elems.supp_rates_len + | |
2230 | elems.ext_supp_rates_len; i++) { | |
2231 | u8 rate = 0; | |
2232 | int own_rate; | |
2233 | if (i < elems.supp_rates_len) | |
2234 | rate = elems.supp_rates[i]; | |
2235 | else if (elems.ext_supp_rates) | |
2236 | rate = elems.ext_supp_rates | |
2237 | [i - elems.supp_rates_len]; | |
2238 | own_rate = 5 * (rate & 0x7f); | |
f0706e82 | 2239 | for (j = 0; j < num_rates; j++) |
8318d78a | 2240 | if (bitrates[j].bitrate == own_rate) |
f0706e82 JB |
2241 | supp_rates |= BIT(j); |
2242 | } | |
2243 | ||
8318d78a JB |
2244 | prev_rates = sta->supp_rates[rx_status->band]; |
2245 | sta->supp_rates[rx_status->band] &= supp_rates; | |
2246 | if (sta->supp_rates[rx_status->band] == 0) { | |
f0706e82 JB |
2247 | /* No matching rates - this should not really happen. |
2248 | * Make sure that at least one rate is marked | |
2249 | * supported to avoid issues with TX rate ctrl. */ | |
8318d78a JB |
2250 | sta->supp_rates[rx_status->band] = |
2251 | sdata->u.sta.supp_rates_bits[rx_status->band]; | |
f0706e82 | 2252 | } |
8318d78a | 2253 | if (sta->supp_rates[rx_status->band] != prev_rates) { |
f0706e82 | 2254 | printk(KERN_DEBUG "%s: updated supp_rates set for " |
8318d78a JB |
2255 | "%s based on beacon info (0x%llx & 0x%llx -> " |
2256 | "0x%llx)\n", | |
2257 | dev->name, print_mac(mac, sta->addr), | |
2258 | (unsigned long long) prev_rates, | |
2259 | (unsigned long long) supp_rates, | |
2260 | (unsigned long long) sta->supp_rates[rx_status->band]); | |
f0706e82 JB |
2261 | } |
2262 | sta_info_put(sta); | |
2263 | } | |
2264 | ||
2265 | if (!elems.ssid) | |
2266 | return; | |
2267 | ||
2268 | if (elems.ds_params && elems.ds_params_len == 1) | |
8318d78a | 2269 | freq = ieee80211_channel_to_frequency(elems.ds_params[0]); |
f0706e82 | 2270 | else |
8318d78a | 2271 | freq = rx_status->freq; |
f0706e82 | 2272 | |
8318d78a | 2273 | bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, |
cffdd30d | 2274 | elems.ssid, elems.ssid_len); |
f0706e82 | 2275 | if (!bss) { |
8318d78a | 2276 | bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, |
cffdd30d | 2277 | elems.ssid, elems.ssid_len); |
f0706e82 JB |
2278 | if (!bss) |
2279 | return; | |
2280 | } else { | |
2281 | #if 0 | |
2282 | /* TODO: order by RSSI? */ | |
2283 | spin_lock_bh(&local->sta_bss_lock); | |
2284 | list_move_tail(&bss->list, &local->sta_bss_list); | |
2285 | spin_unlock_bh(&local->sta_bss_lock); | |
2286 | #endif | |
2287 | } | |
2288 | ||
8318d78a JB |
2289 | bss->band = rx_status->band; |
2290 | ||
9d9bf77d BR |
2291 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && |
2292 | bss->probe_resp && beacon) { | |
2293 | /* STA mode: | |
2294 | * Do not allow beacon to override data from Probe Response. */ | |
f0706e82 JB |
2295 | ieee80211_rx_bss_put(dev, bss); |
2296 | return; | |
2297 | } | |
2298 | ||
5628221c DD |
2299 | /* save the ERP value so that it is available at association time */ |
2300 | if (elems.erp_info && elems.erp_info_len >= 1) { | |
2301 | bss->erp_value = elems.erp_info[0]; | |
2302 | bss->has_erp_value = 1; | |
2303 | } | |
2304 | ||
f0706e82 JB |
2305 | bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); |
2306 | bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); | |
f0706e82 JB |
2307 | |
2308 | bss->supp_rates_len = 0; | |
2309 | if (elems.supp_rates) { | |
2310 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2311 | if (clen > elems.supp_rates_len) | |
2312 | clen = elems.supp_rates_len; | |
2313 | memcpy(&bss->supp_rates[bss->supp_rates_len], elems.supp_rates, | |
2314 | clen); | |
2315 | bss->supp_rates_len += clen; | |
2316 | } | |
2317 | if (elems.ext_supp_rates) { | |
2318 | clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len; | |
2319 | if (clen > elems.ext_supp_rates_len) | |
2320 | clen = elems.ext_supp_rates_len; | |
2321 | memcpy(&bss->supp_rates[bss->supp_rates_len], | |
2322 | elems.ext_supp_rates, clen); | |
2323 | bss->supp_rates_len += clen; | |
2324 | } | |
2325 | ||
2326 | if (elems.wpa && | |
2327 | (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || | |
2328 | memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { | |
2329 | kfree(bss->wpa_ie); | |
2330 | bss->wpa_ie = kmalloc(elems.wpa_len + 2, GFP_ATOMIC); | |
2331 | if (bss->wpa_ie) { | |
2332 | memcpy(bss->wpa_ie, elems.wpa - 2, elems.wpa_len + 2); | |
2333 | bss->wpa_ie_len = elems.wpa_len + 2; | |
2334 | } else | |
2335 | bss->wpa_ie_len = 0; | |
2336 | } else if (!elems.wpa && bss->wpa_ie) { | |
2337 | kfree(bss->wpa_ie); | |
2338 | bss->wpa_ie = NULL; | |
2339 | bss->wpa_ie_len = 0; | |
2340 | } | |
2341 | ||
2342 | if (elems.rsn && | |
2343 | (!bss->rsn_ie || bss->rsn_ie_len != elems.rsn_len || | |
2344 | memcmp(bss->rsn_ie, elems.rsn, elems.rsn_len))) { | |
2345 | kfree(bss->rsn_ie); | |
2346 | bss->rsn_ie = kmalloc(elems.rsn_len + 2, GFP_ATOMIC); | |
2347 | if (bss->rsn_ie) { | |
2348 | memcpy(bss->rsn_ie, elems.rsn - 2, elems.rsn_len + 2); | |
2349 | bss->rsn_ie_len = elems.rsn_len + 2; | |
2350 | } else | |
2351 | bss->rsn_ie_len = 0; | |
2352 | } else if (!elems.rsn && bss->rsn_ie) { | |
2353 | kfree(bss->rsn_ie); | |
2354 | bss->rsn_ie = NULL; | |
2355 | bss->rsn_ie_len = 0; | |
2356 | } | |
2357 | ||
2358 | if (elems.wmm_param && | |
2359 | (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || | |
2360 | memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { | |
2361 | kfree(bss->wmm_ie); | |
2362 | bss->wmm_ie = kmalloc(elems.wmm_param_len + 2, GFP_ATOMIC); | |
2363 | if (bss->wmm_ie) { | |
2364 | memcpy(bss->wmm_ie, elems.wmm_param - 2, | |
2365 | elems.wmm_param_len + 2); | |
2366 | bss->wmm_ie_len = elems.wmm_param_len + 2; | |
2367 | } else | |
2368 | bss->wmm_ie_len = 0; | |
2369 | } else if (!elems.wmm_param && bss->wmm_ie) { | |
2370 | kfree(bss->wmm_ie); | |
2371 | bss->wmm_ie = NULL; | |
2372 | bss->wmm_ie_len = 0; | |
2373 | } | |
c7153508 RR |
2374 | if (elems.ht_cap_elem && |
2375 | (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || | |
2376 | memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { | |
2377 | kfree(bss->ht_ie); | |
2378 | bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); | |
2379 | if (bss->ht_ie) { | |
2380 | memcpy(bss->ht_ie, elems.ht_cap_elem - 2, | |
2381 | elems.ht_cap_elem_len + 2); | |
2382 | bss->ht_ie_len = elems.ht_cap_elem_len + 2; | |
2383 | } else | |
2384 | bss->ht_ie_len = 0; | |
2385 | } else if (!elems.ht_cap_elem && bss->ht_ie) { | |
2386 | kfree(bss->ht_ie); | |
2387 | bss->ht_ie = NULL; | |
2388 | bss->ht_ie_len = 0; | |
2389 | } | |
f0706e82 | 2390 | |
9d9bf77d | 2391 | bss->timestamp = beacon_timestamp; |
f0706e82 JB |
2392 | bss->last_update = jiffies; |
2393 | bss->rssi = rx_status->ssi; | |
2394 | bss->signal = rx_status->signal; | |
2395 | bss->noise = rx_status->noise; | |
2396 | if (!beacon) | |
2397 | bss->probe_resp++; | |
9d9bf77d BR |
2398 | |
2399 | /* check if we need to merge IBSS */ | |
2400 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && | |
2401 | !local->sta_sw_scanning && !local->sta_hw_scanning && | |
fba4a1e6 | 2402 | bss->capability & WLAN_CAPABILITY_IBSS && |
9d9bf77d BR |
2403 | bss->freq == local->oper_channel->center_freq && |
2404 | elems.ssid_len == sdata->u.sta.ssid_len && | |
2405 | memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) { | |
2406 | if (rx_status->flag & RX_FLAG_TSFT) { | |
2407 | /* in order for correct IBSS merging we need mactime | |
2408 | * | |
2409 | * since mactime is defined as the time the first data | |
2410 | * symbol of the frame hits the PHY, and the timestamp | |
2411 | * of the beacon is defined as "the time that the data | |
2412 | * symbol containing the first bit of the timestamp is | |
2413 | * transmitted to the PHY plus the transmitting STA’s | |
2414 | * delays through its local PHY from the MAC-PHY | |
2415 | * interface to its interface with the WM" | |
2416 | * (802.11 11.1.2) - equals the time this bit arrives at | |
2417 | * the receiver - we have to take into account the | |
2418 | * offset between the two. | |
2419 | * e.g: at 1 MBit that means mactime is 192 usec earlier | |
2420 | * (=24 bytes * 8 usecs/byte) than the beacon timestamp. | |
2421 | */ | |
2422 | int rate = local->hw.wiphy->bands[rx_status->band]-> | |
2423 | bitrates[rx_status->rate_idx].bitrate; | |
2424 | rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); | |
2425 | } else if (local && local->ops && local->ops->get_tsf) | |
2426 | /* second best option: get current TSF */ | |
2427 | rx_timestamp = local->ops->get_tsf(local_to_hw(local)); | |
2428 | else | |
2429 | /* can't merge without knowing the TSF */ | |
2430 | rx_timestamp = -1LLU; | |
2431 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2432 | printk(KERN_DEBUG "RX beacon SA=%s BSSID=" | |
2433 | "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", | |
2434 | print_mac(mac, mgmt->sa), | |
2435 | print_mac(mac2, mgmt->bssid), | |
2436 | (unsigned long long)rx_timestamp, | |
2437 | (unsigned long long)beacon_timestamp, | |
2438 | (unsigned long long)(rx_timestamp - beacon_timestamp), | |
2439 | jiffies); | |
2440 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
2441 | if (beacon_timestamp > rx_timestamp) { | |
fba4a1e6 | 2442 | #ifndef CONFIG_MAC80211_IBSS_DEBUG |
d97cf015 | 2443 | if (net_ratelimit()) |
fba4a1e6 | 2444 | #endif |
9d9bf77d BR |
2445 | printk(KERN_DEBUG "%s: beacon TSF higher than " |
2446 | "local TSF - IBSS merge with BSSID %s\n", | |
2447 | dev->name, print_mac(mac, mgmt->bssid)); | |
2448 | ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); | |
2449 | ieee80211_ibss_add_sta(dev, NULL, | |
2450 | mgmt->bssid, mgmt->sa); | |
2451 | } | |
2452 | } | |
2453 | ||
f0706e82 JB |
2454 | ieee80211_rx_bss_put(dev, bss); |
2455 | } | |
2456 | ||
2457 | ||
2458 | static void ieee80211_rx_mgmt_probe_resp(struct net_device *dev, | |
2459 | struct ieee80211_mgmt *mgmt, | |
2460 | size_t len, | |
2461 | struct ieee80211_rx_status *rx_status) | |
2462 | { | |
2463 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 0); | |
2464 | } | |
2465 | ||
2466 | ||
2467 | static void ieee80211_rx_mgmt_beacon(struct net_device *dev, | |
2468 | struct ieee80211_mgmt *mgmt, | |
2469 | size_t len, | |
2470 | struct ieee80211_rx_status *rx_status) | |
2471 | { | |
f0706e82 JB |
2472 | struct ieee80211_sub_if_data *sdata; |
2473 | struct ieee80211_if_sta *ifsta; | |
f0706e82 JB |
2474 | size_t baselen; |
2475 | struct ieee802_11_elems elems; | |
d3c990fb RR |
2476 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
2477 | struct ieee80211_conf *conf = &local->hw.conf; | |
471b3efd | 2478 | u32 changed = 0; |
f0706e82 JB |
2479 | |
2480 | ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1); | |
2481 | ||
2482 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
51fb61e7 | 2483 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2484 | return; |
2485 | ifsta = &sdata->u.sta; | |
2486 | ||
d6f2da5b | 2487 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED) || |
f0706e82 JB |
2488 | memcmp(ifsta->bssid, mgmt->bssid, ETH_ALEN) != 0) |
2489 | return; | |
2490 | ||
2491 | /* Process beacon from the current BSS */ | |
2492 | baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; | |
2493 | if (baselen > len) | |
2494 | return; | |
2495 | ||
67a4cce4 | 2496 | ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); |
f0706e82 | 2497 | |
5628221c | 2498 | if (elems.erp_info && elems.erp_info_len >= 1) |
471b3efd | 2499 | changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); |
f0706e82 | 2500 | |
d3c990fb RR |
2501 | if (elems.ht_cap_elem && elems.ht_info_elem && |
2502 | elems.wmm_param && local->ops->conf_ht && | |
2503 | conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { | |
2504 | struct ieee80211_ht_bss_info bss_info; | |
2505 | ||
2506 | ieee80211_ht_addt_info_ie_to_ht_bss_info( | |
2507 | (struct ieee80211_ht_addt_info *) | |
2508 | elems.ht_info_elem, &bss_info); | |
2509 | /* check if AP changed bss inforamation */ | |
2510 | if ((conf->ht_bss_conf.primary_channel != | |
2511 | bss_info.primary_channel) || | |
2512 | (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) || | |
2513 | (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode)) | |
2514 | ieee80211_hw_config_ht(local, 1, &conf->ht_conf, | |
2515 | &bss_info); | |
2516 | } | |
2517 | ||
d6f2da5b | 2518 | if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { |
f0706e82 JB |
2519 | ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, |
2520 | elems.wmm_param_len); | |
2521 | } | |
471b3efd JB |
2522 | |
2523 | ieee80211_bss_info_change_notify(sdata, changed); | |
f0706e82 JB |
2524 | } |
2525 | ||
2526 | ||
2527 | static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, | |
2528 | struct ieee80211_if_sta *ifsta, | |
2529 | struct ieee80211_mgmt *mgmt, | |
2530 | size_t len, | |
2531 | struct ieee80211_rx_status *rx_status) | |
2532 | { | |
2533 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2534 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2535 | int tx_last_beacon; | |
2536 | struct sk_buff *skb; | |
2537 | struct ieee80211_mgmt *resp; | |
2538 | u8 *pos, *end; | |
0795af57 JP |
2539 | DECLARE_MAC_BUF(mac); |
2540 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
2541 | DECLARE_MAC_BUF(mac2); | |
2542 | DECLARE_MAC_BUF(mac3); | |
2543 | #endif | |
f0706e82 | 2544 | |
51fb61e7 | 2545 | if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS || |
f0706e82 JB |
2546 | ifsta->state != IEEE80211_IBSS_JOINED || |
2547 | len < 24 + 2 || !ifsta->probe_resp) | |
2548 | return; | |
2549 | ||
2550 | if (local->ops->tx_last_beacon) | |
2551 | tx_last_beacon = local->ops->tx_last_beacon(local_to_hw(local)); | |
2552 | else | |
2553 | tx_last_beacon = 1; | |
2554 | ||
2555 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2556 | printk(KERN_DEBUG "%s: RX ProbeReq SA=%s DA=%s BSSID=" |
2557 | "%s (tx_last_beacon=%d)\n", | |
2558 | dev->name, print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->da), | |
2559 | print_mac(mac3, mgmt->bssid), tx_last_beacon); | |
f0706e82 JB |
2560 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2561 | ||
2562 | if (!tx_last_beacon) | |
2563 | return; | |
2564 | ||
2565 | if (memcmp(mgmt->bssid, ifsta->bssid, ETH_ALEN) != 0 && | |
2566 | memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0) | |
2567 | return; | |
2568 | ||
2569 | end = ((u8 *) mgmt) + len; | |
2570 | pos = mgmt->u.probe_req.variable; | |
2571 | if (pos[0] != WLAN_EID_SSID || | |
2572 | pos + 2 + pos[1] > end) { | |
2573 | if (net_ratelimit()) { | |
2574 | printk(KERN_DEBUG "%s: Invalid SSID IE in ProbeReq " | |
0795af57 JP |
2575 | "from %s\n", |
2576 | dev->name, print_mac(mac, mgmt->sa)); | |
f0706e82 JB |
2577 | } |
2578 | return; | |
2579 | } | |
2580 | if (pos[1] != 0 && | |
2581 | (pos[1] != ifsta->ssid_len || | |
2582 | memcmp(pos + 2, ifsta->ssid, ifsta->ssid_len) != 0)) { | |
2583 | /* Ignore ProbeReq for foreign SSID */ | |
2584 | return; | |
2585 | } | |
2586 | ||
2587 | /* Reply with ProbeResp */ | |
0ec0b7ac | 2588 | skb = skb_copy(ifsta->probe_resp, GFP_KERNEL); |
f0706e82 JB |
2589 | if (!skb) |
2590 | return; | |
2591 | ||
2592 | resp = (struct ieee80211_mgmt *) skb->data; | |
2593 | memcpy(resp->da, mgmt->sa, ETH_ALEN); | |
2594 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
2595 | printk(KERN_DEBUG "%s: Sending ProbeResp to %s\n", |
2596 | dev->name, print_mac(mac, resp->da)); | |
f0706e82 JB |
2597 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
2598 | ieee80211_sta_tx(dev, skb, 0); | |
2599 | } | |
2600 | ||
4e20cb29 JB |
2601 | static void ieee80211_rx_mgmt_action(struct net_device *dev, |
2602 | struct ieee80211_if_sta *ifsta, | |
2603 | struct ieee80211_mgmt *mgmt, | |
2604 | size_t len) | |
9f985b0e RR |
2605 | { |
2606 | if (len < IEEE80211_MIN_ACTION_SIZE) | |
2607 | return; | |
2608 | ||
2609 | switch (mgmt->u.action.category) { | |
2610 | case WLAN_CATEGORY_BACK: | |
2611 | switch (mgmt->u.action.u.addba_req.action_code) { | |
2612 | case WLAN_ACTION_ADDBA_REQ: | |
2613 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2614 | sizeof(mgmt->u.action.u.addba_req))) | |
2615 | break; | |
2616 | ieee80211_sta_process_addba_request(dev, mgmt, len); | |
2617 | break; | |
eadc8d9e RR |
2618 | case WLAN_ACTION_ADDBA_RESP: |
2619 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2620 | sizeof(mgmt->u.action.u.addba_resp))) | |
2621 | break; | |
2622 | ieee80211_sta_process_addba_resp(dev, mgmt, len); | |
2623 | break; | |
688b88a4 RR |
2624 | case WLAN_ACTION_DELBA: |
2625 | if (len < (IEEE80211_MIN_ACTION_SIZE + | |
2626 | sizeof(mgmt->u.action.u.delba))) | |
2627 | break; | |
2628 | ieee80211_sta_process_delba(dev, mgmt, len); | |
2629 | break; | |
9f985b0e RR |
2630 | default: |
2631 | if (net_ratelimit()) | |
688b88a4 | 2632 | printk(KERN_DEBUG "%s: Rx unknown A-MPDU action\n", |
9f985b0e RR |
2633 | dev->name); |
2634 | break; | |
2635 | } | |
2636 | break; | |
2637 | default: | |
2638 | break; | |
2639 | } | |
2640 | } | |
f0706e82 JB |
2641 | |
2642 | void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, | |
2643 | struct ieee80211_rx_status *rx_status) | |
2644 | { | |
2645 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2646 | struct ieee80211_sub_if_data *sdata; | |
2647 | struct ieee80211_if_sta *ifsta; | |
2648 | struct ieee80211_mgmt *mgmt; | |
2649 | u16 fc; | |
2650 | ||
2651 | if (skb->len < 24) | |
2652 | goto fail; | |
2653 | ||
2654 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2655 | ifsta = &sdata->u.sta; | |
2656 | ||
2657 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2658 | fc = le16_to_cpu(mgmt->frame_control); | |
2659 | ||
2660 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2661 | case IEEE80211_STYPE_PROBE_REQ: | |
2662 | case IEEE80211_STYPE_PROBE_RESP: | |
2663 | case IEEE80211_STYPE_BEACON: | |
2664 | memcpy(skb->cb, rx_status, sizeof(*rx_status)); | |
2665 | case IEEE80211_STYPE_AUTH: | |
2666 | case IEEE80211_STYPE_ASSOC_RESP: | |
2667 | case IEEE80211_STYPE_REASSOC_RESP: | |
2668 | case IEEE80211_STYPE_DEAUTH: | |
2669 | case IEEE80211_STYPE_DISASSOC: | |
9f985b0e | 2670 | case IEEE80211_STYPE_ACTION: |
f0706e82 JB |
2671 | skb_queue_tail(&ifsta->skb_queue, skb); |
2672 | queue_work(local->hw.workqueue, &ifsta->work); | |
2673 | return; | |
2674 | default: | |
2675 | printk(KERN_DEBUG "%s: received unknown management frame - " | |
2676 | "stype=%d\n", dev->name, | |
2677 | (fc & IEEE80211_FCTL_STYPE) >> 4); | |
2678 | break; | |
2679 | } | |
2680 | ||
2681 | fail: | |
2682 | kfree_skb(skb); | |
2683 | } | |
2684 | ||
2685 | ||
2686 | static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, | |
2687 | struct sk_buff *skb) | |
2688 | { | |
2689 | struct ieee80211_rx_status *rx_status; | |
2690 | struct ieee80211_sub_if_data *sdata; | |
2691 | struct ieee80211_if_sta *ifsta; | |
2692 | struct ieee80211_mgmt *mgmt; | |
2693 | u16 fc; | |
2694 | ||
2695 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2696 | ifsta = &sdata->u.sta; | |
2697 | ||
2698 | rx_status = (struct ieee80211_rx_status *) skb->cb; | |
2699 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2700 | fc = le16_to_cpu(mgmt->frame_control); | |
2701 | ||
2702 | switch (fc & IEEE80211_FCTL_STYPE) { | |
2703 | case IEEE80211_STYPE_PROBE_REQ: | |
2704 | ieee80211_rx_mgmt_probe_req(dev, ifsta, mgmt, skb->len, | |
2705 | rx_status); | |
2706 | break; | |
2707 | case IEEE80211_STYPE_PROBE_RESP: | |
2708 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); | |
2709 | break; | |
2710 | case IEEE80211_STYPE_BEACON: | |
2711 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); | |
2712 | break; | |
2713 | case IEEE80211_STYPE_AUTH: | |
2714 | ieee80211_rx_mgmt_auth(dev, ifsta, mgmt, skb->len); | |
2715 | break; | |
2716 | case IEEE80211_STYPE_ASSOC_RESP: | |
471b3efd | 2717 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 0); |
f0706e82 JB |
2718 | break; |
2719 | case IEEE80211_STYPE_REASSOC_RESP: | |
471b3efd | 2720 | ieee80211_rx_mgmt_assoc_resp(sdata, ifsta, mgmt, skb->len, 1); |
f0706e82 JB |
2721 | break; |
2722 | case IEEE80211_STYPE_DEAUTH: | |
2723 | ieee80211_rx_mgmt_deauth(dev, ifsta, mgmt, skb->len); | |
2724 | break; | |
2725 | case IEEE80211_STYPE_DISASSOC: | |
2726 | ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); | |
2727 | break; | |
9f985b0e RR |
2728 | case IEEE80211_STYPE_ACTION: |
2729 | ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len); | |
2730 | break; | |
f0706e82 JB |
2731 | } |
2732 | ||
2733 | kfree_skb(skb); | |
2734 | } | |
2735 | ||
2736 | ||
9ae54c84 | 2737 | ieee80211_rx_result |
ece8eddd ZY |
2738 | ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, |
2739 | struct ieee80211_rx_status *rx_status) | |
f0706e82 JB |
2740 | { |
2741 | struct ieee80211_mgmt *mgmt; | |
2742 | u16 fc; | |
2743 | ||
ece8eddd | 2744 | if (skb->len < 2) |
e4c26add | 2745 | return RX_DROP_UNUSABLE; |
f0706e82 JB |
2746 | |
2747 | mgmt = (struct ieee80211_mgmt *) skb->data; | |
2748 | fc = le16_to_cpu(mgmt->frame_control); | |
2749 | ||
ece8eddd | 2750 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) |
9ae54c84 | 2751 | return RX_CONTINUE; |
ece8eddd ZY |
2752 | |
2753 | if (skb->len < 24) | |
e4c26add | 2754 | return RX_DROP_MONITOR; |
ece8eddd | 2755 | |
f0706e82 JB |
2756 | if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { |
2757 | if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) { | |
2758 | ieee80211_rx_mgmt_probe_resp(dev, mgmt, | |
2759 | skb->len, rx_status); | |
ece8eddd | 2760 | dev_kfree_skb(skb); |
9ae54c84 | 2761 | return RX_QUEUED; |
f0706e82 JB |
2762 | } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { |
2763 | ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, | |
2764 | rx_status); | |
ece8eddd | 2765 | dev_kfree_skb(skb); |
9ae54c84 | 2766 | return RX_QUEUED; |
f0706e82 JB |
2767 | } |
2768 | } | |
9ae54c84 | 2769 | return RX_CONTINUE; |
f0706e82 JB |
2770 | } |
2771 | ||
2772 | ||
2773 | static int ieee80211_sta_active_ibss(struct net_device *dev) | |
2774 | { | |
2775 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2776 | int active = 0; | |
2777 | struct sta_info *sta; | |
2778 | ||
be8755e1 | 2779 | read_lock_bh(&local->sta_lock); |
f0706e82 JB |
2780 | list_for_each_entry(sta, &local->sta_list, list) { |
2781 | if (sta->dev == dev && | |
2782 | time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, | |
2783 | jiffies)) { | |
2784 | active++; | |
2785 | break; | |
2786 | } | |
2787 | } | |
be8755e1 | 2788 | read_unlock_bh(&local->sta_lock); |
f0706e82 JB |
2789 | |
2790 | return active; | |
2791 | } | |
2792 | ||
2793 | ||
2794 | static void ieee80211_sta_expire(struct net_device *dev) | |
2795 | { | |
2796 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2797 | struct sta_info *sta, *tmp; | |
be8755e1 | 2798 | LIST_HEAD(tmp_list); |
0795af57 | 2799 | DECLARE_MAC_BUF(mac); |
f0706e82 | 2800 | |
be8755e1 | 2801 | write_lock_bh(&local->sta_lock); |
f0706e82 JB |
2802 | list_for_each_entry_safe(sta, tmp, &local->sta_list, list) |
2803 | if (time_after(jiffies, sta->last_rx + | |
2804 | IEEE80211_IBSS_INACTIVITY_LIMIT)) { | |
0795af57 JP |
2805 | printk(KERN_DEBUG "%s: expiring inactive STA %s\n", |
2806 | dev->name, print_mac(mac, sta->addr)); | |
be8755e1 MW |
2807 | __sta_info_get(sta); |
2808 | sta_info_remove(sta); | |
2809 | list_add(&sta->list, &tmp_list); | |
f0706e82 | 2810 | } |
be8755e1 MW |
2811 | write_unlock_bh(&local->sta_lock); |
2812 | ||
2813 | list_for_each_entry_safe(sta, tmp, &tmp_list, list) { | |
2814 | sta_info_free(sta); | |
2815 | sta_info_put(sta); | |
2816 | } | |
f0706e82 JB |
2817 | } |
2818 | ||
2819 | ||
2820 | static void ieee80211_sta_merge_ibss(struct net_device *dev, | |
2821 | struct ieee80211_if_sta *ifsta) | |
2822 | { | |
2823 | mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); | |
2824 | ||
2825 | ieee80211_sta_expire(dev); | |
2826 | if (ieee80211_sta_active_ibss(dev)) | |
2827 | return; | |
2828 | ||
2829 | printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other " | |
2830 | "IBSS networks with same SSID (merge)\n", dev->name); | |
2831 | ieee80211_sta_req_scan(dev, ifsta->ssid, ifsta->ssid_len); | |
2832 | } | |
2833 | ||
2834 | ||
2835 | void ieee80211_sta_timer(unsigned long data) | |
2836 | { | |
2837 | struct ieee80211_sub_if_data *sdata = | |
2838 | (struct ieee80211_sub_if_data *) data; | |
2839 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
2840 | struct ieee80211_local *local = wdev_priv(&sdata->wdev); | |
2841 | ||
2842 | set_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2843 | queue_work(local->hw.workqueue, &ifsta->work); | |
2844 | } | |
2845 | ||
2846 | ||
2847 | void ieee80211_sta_work(struct work_struct *work) | |
2848 | { | |
2849 | struct ieee80211_sub_if_data *sdata = | |
2850 | container_of(work, struct ieee80211_sub_if_data, u.sta.work); | |
2851 | struct net_device *dev = sdata->dev; | |
2852 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2853 | struct ieee80211_if_sta *ifsta; | |
2854 | struct sk_buff *skb; | |
2855 | ||
2856 | if (!netif_running(dev)) | |
2857 | return; | |
2858 | ||
ece8eddd | 2859 | if (local->sta_sw_scanning || local->sta_hw_scanning) |
f0706e82 JB |
2860 | return; |
2861 | ||
51fb61e7 JB |
2862 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
2863 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { | |
f0706e82 | 2864 | printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " |
51fb61e7 | 2865 | "(type=%d)\n", dev->name, sdata->vif.type); |
f0706e82 JB |
2866 | return; |
2867 | } | |
2868 | ifsta = &sdata->u.sta; | |
2869 | ||
2870 | while ((skb = skb_dequeue(&ifsta->skb_queue))) | |
2871 | ieee80211_sta_rx_queued_mgmt(dev, skb); | |
2872 | ||
2873 | if (ifsta->state != IEEE80211_AUTHENTICATE && | |
2874 | ifsta->state != IEEE80211_ASSOCIATE && | |
2875 | test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { | |
a0af5f14 HS |
2876 | if (ifsta->scan_ssid_len) |
2877 | ieee80211_sta_start_scan(dev, ifsta->scan_ssid, ifsta->scan_ssid_len); | |
2878 | else | |
2879 | ieee80211_sta_start_scan(dev, NULL, 0); | |
f0706e82 JB |
2880 | return; |
2881 | } | |
2882 | ||
2883 | if (test_and_clear_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request)) { | |
2884 | if (ieee80211_sta_config_auth(dev, ifsta)) | |
2885 | return; | |
2886 | clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request); | |
2887 | } else if (!test_and_clear_bit(IEEE80211_STA_REQ_RUN, &ifsta->request)) | |
2888 | return; | |
2889 | ||
2890 | switch (ifsta->state) { | |
2891 | case IEEE80211_DISABLED: | |
2892 | break; | |
2893 | case IEEE80211_AUTHENTICATE: | |
2894 | ieee80211_authenticate(dev, ifsta); | |
2895 | break; | |
2896 | case IEEE80211_ASSOCIATE: | |
2897 | ieee80211_associate(dev, ifsta); | |
2898 | break; | |
2899 | case IEEE80211_ASSOCIATED: | |
2900 | ieee80211_associated(dev, ifsta); | |
2901 | break; | |
2902 | case IEEE80211_IBSS_SEARCH: | |
2903 | ieee80211_sta_find_ibss(dev, ifsta); | |
2904 | break; | |
2905 | case IEEE80211_IBSS_JOINED: | |
2906 | ieee80211_sta_merge_ibss(dev, ifsta); | |
2907 | break; | |
2908 | default: | |
2909 | printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", | |
2910 | ifsta->state); | |
2911 | break; | |
2912 | } | |
2913 | ||
2914 | if (ieee80211_privacy_mismatch(dev, ifsta)) { | |
2915 | printk(KERN_DEBUG "%s: privacy configuration mismatch and " | |
2916 | "mixed-cell disabled - disassociate\n", dev->name); | |
2917 | ||
2918 | ieee80211_send_disassoc(dev, ifsta, WLAN_REASON_UNSPECIFIED); | |
2919 | ieee80211_set_disassoc(dev, ifsta, 0); | |
2920 | } | |
2921 | } | |
2922 | ||
2923 | ||
2924 | static void ieee80211_sta_reset_auth(struct net_device *dev, | |
2925 | struct ieee80211_if_sta *ifsta) | |
2926 | { | |
2927 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2928 | ||
2929 | if (local->ops->reset_tsf) { | |
2930 | /* Reset own TSF to allow time synchronization work. */ | |
2931 | local->ops->reset_tsf(local_to_hw(local)); | |
2932 | } | |
2933 | ||
2934 | ifsta->wmm_last_param_set = -1; /* allow any WMM update */ | |
2935 | ||
2936 | ||
2937 | if (ifsta->auth_algs & IEEE80211_AUTH_ALG_OPEN) | |
2938 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2939 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_SHARED_KEY) | |
2940 | ifsta->auth_alg = WLAN_AUTH_SHARED_KEY; | |
2941 | else if (ifsta->auth_algs & IEEE80211_AUTH_ALG_LEAP) | |
2942 | ifsta->auth_alg = WLAN_AUTH_LEAP; | |
2943 | else | |
2944 | ifsta->auth_alg = WLAN_AUTH_OPEN; | |
2945 | printk(KERN_DEBUG "%s: Initial auth_alg=%d\n", dev->name, | |
2946 | ifsta->auth_alg); | |
2947 | ifsta->auth_transaction = -1; | |
d6f2da5b JS |
2948 | ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; |
2949 | ifsta->auth_tries = ifsta->assoc_tries = 0; | |
f0706e82 JB |
2950 | netif_carrier_off(dev); |
2951 | } | |
2952 | ||
2953 | ||
2954 | void ieee80211_sta_req_auth(struct net_device *dev, | |
2955 | struct ieee80211_if_sta *ifsta) | |
2956 | { | |
2957 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
2958 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
2959 | ||
51fb61e7 | 2960 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
2961 | return; |
2962 | ||
d6f2da5b JS |
2963 | if ((ifsta->flags & (IEEE80211_STA_BSSID_SET | |
2964 | IEEE80211_STA_AUTO_BSSID_SEL)) && | |
2965 | (ifsta->flags & (IEEE80211_STA_SSID_SET | | |
2966 | IEEE80211_STA_AUTO_SSID_SEL))) { | |
f0706e82 JB |
2967 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); |
2968 | queue_work(local->hw.workqueue, &ifsta->work); | |
2969 | } | |
2970 | } | |
2971 | ||
2972 | static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta, | |
2973 | const char *ssid, int ssid_len) | |
2974 | { | |
2975 | int tmp, hidden_ssid; | |
2976 | ||
48225709 MW |
2977 | if (ssid_len == ifsta->ssid_len && |
2978 | !memcmp(ifsta->ssid, ssid, ssid_len)) | |
f0706e82 JB |
2979 | return 1; |
2980 | ||
d6f2da5b | 2981 | if (ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) |
f0706e82 JB |
2982 | return 0; |
2983 | ||
2984 | hidden_ssid = 1; | |
2985 | tmp = ssid_len; | |
2986 | while (tmp--) { | |
2987 | if (ssid[tmp] != '\0') { | |
2988 | hidden_ssid = 0; | |
2989 | break; | |
2990 | } | |
2991 | } | |
2992 | ||
2993 | if (hidden_ssid && ifsta->ssid_len == ssid_len) | |
2994 | return 1; | |
2995 | ||
2996 | if (ssid_len == 1 && ssid[0] == ' ') | |
2997 | return 1; | |
2998 | ||
2999 | return 0; | |
3000 | } | |
3001 | ||
3002 | static int ieee80211_sta_config_auth(struct net_device *dev, | |
3003 | struct ieee80211_if_sta *ifsta) | |
3004 | { | |
3005 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3006 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3007 | struct ieee80211_sta_bss *bss, *selected = NULL; | |
3008 | int top_rssi = 0, freq; | |
3009 | ||
d6f2da5b JS |
3010 | if (!(ifsta->flags & (IEEE80211_STA_AUTO_SSID_SEL | |
3011 | IEEE80211_STA_AUTO_BSSID_SEL | IEEE80211_STA_AUTO_CHANNEL_SEL))) { | |
f0706e82 | 3012 | ifsta->state = IEEE80211_AUTHENTICATE; |
f0706e82 JB |
3013 | ieee80211_sta_reset_auth(dev, ifsta); |
3014 | return 0; | |
3015 | } | |
3016 | ||
3017 | spin_lock_bh(&local->sta_bss_lock); | |
8318d78a | 3018 | freq = local->oper_channel->center_freq; |
f0706e82 JB |
3019 | list_for_each_entry(bss, &local->sta_bss_list, list) { |
3020 | if (!(bss->capability & WLAN_CAPABILITY_ESS)) | |
3021 | continue; | |
3022 | ||
3023 | if (!!(bss->capability & WLAN_CAPABILITY_PRIVACY) ^ | |
3024 | !!sdata->default_key) | |
3025 | continue; | |
3026 | ||
d6f2da5b JS |
3027 | if (!(ifsta->flags & IEEE80211_STA_AUTO_CHANNEL_SEL) && |
3028 | bss->freq != freq) | |
f0706e82 JB |
3029 | continue; |
3030 | ||
d6f2da5b | 3031 | if (!(ifsta->flags & IEEE80211_STA_AUTO_BSSID_SEL) && |
f0706e82 JB |
3032 | memcmp(bss->bssid, ifsta->bssid, ETH_ALEN)) |
3033 | continue; | |
3034 | ||
d6f2da5b | 3035 | if (!(ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) && |
f0706e82 JB |
3036 | !ieee80211_sta_match_ssid(ifsta, bss->ssid, bss->ssid_len)) |
3037 | continue; | |
3038 | ||
3039 | if (!selected || top_rssi < bss->rssi) { | |
3040 | selected = bss; | |
3041 | top_rssi = bss->rssi; | |
3042 | } | |
3043 | } | |
3044 | if (selected) | |
3045 | atomic_inc(&selected->users); | |
3046 | spin_unlock_bh(&local->sta_bss_lock); | |
3047 | ||
3048 | if (selected) { | |
8318d78a | 3049 | ieee80211_set_freq(local, selected->freq); |
d6f2da5b | 3050 | if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) |
f0706e82 JB |
3051 | ieee80211_sta_set_ssid(dev, selected->ssid, |
3052 | selected->ssid_len); | |
3053 | ieee80211_sta_set_bssid(dev, selected->bssid); | |
3054 | ieee80211_rx_bss_put(dev, selected); | |
3055 | ifsta->state = IEEE80211_AUTHENTICATE; | |
f0706e82 JB |
3056 | ieee80211_sta_reset_auth(dev, ifsta); |
3057 | return 0; | |
3058 | } else { | |
3059 | if (ifsta->state != IEEE80211_AUTHENTICATE) { | |
d6f2da5b | 3060 | if (ifsta->flags & IEEE80211_STA_AUTO_SSID_SEL) |
b9bf1e60 JL |
3061 | ieee80211_sta_start_scan(dev, NULL, 0); |
3062 | else | |
3063 | ieee80211_sta_start_scan(dev, ifsta->ssid, | |
3064 | ifsta->ssid_len); | |
f0706e82 JB |
3065 | ifsta->state = IEEE80211_AUTHENTICATE; |
3066 | set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request); | |
3067 | } else | |
3068 | ifsta->state = IEEE80211_DISABLED; | |
3069 | } | |
f0706e82 JB |
3070 | return -1; |
3071 | } | |
3072 | ||
f0706e82 JB |
3073 | |
3074 | static int ieee80211_sta_create_ibss(struct net_device *dev, | |
3075 | struct ieee80211_if_sta *ifsta) | |
3076 | { | |
3077 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3078 | struct ieee80211_sta_bss *bss; | |
cffdd30d | 3079 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
8318d78a | 3080 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3081 | u8 bssid[ETH_ALEN], *pos; |
3082 | int i; | |
0795af57 | 3083 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3084 | |
3085 | #if 0 | |
3086 | /* Easier testing, use fixed BSSID. */ | |
3087 | memset(bssid, 0xfe, ETH_ALEN); | |
3088 | #else | |
3089 | /* Generate random, not broadcast, locally administered BSSID. Mix in | |
3090 | * own MAC address to make sure that devices that do not have proper | |
3091 | * random number generator get different BSSID. */ | |
3092 | get_random_bytes(bssid, ETH_ALEN); | |
3093 | for (i = 0; i < ETH_ALEN; i++) | |
3094 | bssid[i] ^= dev->dev_addr[i]; | |
3095 | bssid[0] &= ~0x01; | |
3096 | bssid[0] |= 0x02; | |
3097 | #endif | |
3098 | ||
0795af57 JP |
3099 | printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", |
3100 | dev->name, print_mac(mac, bssid)); | |
f0706e82 | 3101 | |
8318d78a JB |
3102 | bss = ieee80211_rx_bss_add(dev, bssid, |
3103 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3104 | sdata->u.sta.ssid, sdata->u.sta.ssid_len); |
f0706e82 JB |
3105 | if (!bss) |
3106 | return -ENOMEM; | |
3107 | ||
8318d78a JB |
3108 | bss->band = local->hw.conf.channel->band; |
3109 | sband = local->hw.wiphy->bands[bss->band]; | |
f0706e82 JB |
3110 | |
3111 | if (local->hw.conf.beacon_int == 0) | |
3112 | local->hw.conf.beacon_int = 100; | |
3113 | bss->beacon_int = local->hw.conf.beacon_int; | |
f0706e82 JB |
3114 | bss->last_update = jiffies; |
3115 | bss->capability = WLAN_CAPABILITY_IBSS; | |
3116 | if (sdata->default_key) { | |
3117 | bss->capability |= WLAN_CAPABILITY_PRIVACY; | |
3118 | } else | |
3119 | sdata->drop_unencrypted = 0; | |
8318d78a | 3120 | bss->supp_rates_len = sband->n_bitrates; |
f0706e82 | 3121 | pos = bss->supp_rates; |
8318d78a JB |
3122 | for (i = 0; i < sband->n_bitrates; i++) { |
3123 | int rate = sband->bitrates[i].bitrate; | |
f0706e82 JB |
3124 | *pos++ = (u8) (rate / 5); |
3125 | } | |
3126 | ||
3127 | return ieee80211_sta_join_ibss(dev, ifsta, bss); | |
3128 | } | |
3129 | ||
3130 | ||
3131 | static int ieee80211_sta_find_ibss(struct net_device *dev, | |
3132 | struct ieee80211_if_sta *ifsta) | |
3133 | { | |
3134 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3135 | struct ieee80211_sta_bss *bss; | |
3136 | int found = 0; | |
3137 | u8 bssid[ETH_ALEN]; | |
3138 | int active_ibss; | |
0795af57 JP |
3139 | DECLARE_MAC_BUF(mac); |
3140 | DECLARE_MAC_BUF(mac2); | |
f0706e82 JB |
3141 | |
3142 | if (ifsta->ssid_len == 0) | |
3143 | return -EINVAL; | |
3144 | ||
3145 | active_ibss = ieee80211_sta_active_ibss(dev); | |
3146 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3147 | printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n", | |
3148 | dev->name, active_ibss); | |
3149 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3150 | spin_lock_bh(&local->sta_bss_lock); | |
3151 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3152 | if (ifsta->ssid_len != bss->ssid_len || | |
3153 | memcmp(ifsta->ssid, bss->ssid, bss->ssid_len) != 0 | |
3154 | || !(bss->capability & WLAN_CAPABILITY_IBSS)) | |
3155 | continue; | |
3156 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3157 | printk(KERN_DEBUG " bssid=%s found\n", |
3158 | print_mac(mac, bss->bssid)); | |
f0706e82 JB |
3159 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3160 | memcpy(bssid, bss->bssid, ETH_ALEN); | |
3161 | found = 1; | |
3162 | if (active_ibss || memcmp(bssid, ifsta->bssid, ETH_ALEN) != 0) | |
3163 | break; | |
3164 | } | |
3165 | spin_unlock_bh(&local->sta_bss_lock); | |
3166 | ||
3167 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
0795af57 JP |
3168 | printk(KERN_DEBUG " sta_find_ibss: selected %s current " |
3169 | "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid)); | |
f0706e82 JB |
3170 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ |
3171 | if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && | |
8318d78a JB |
3172 | (bss = ieee80211_rx_bss_get(dev, bssid, |
3173 | local->hw.conf.channel->center_freq, | |
cffdd30d | 3174 | ifsta->ssid, ifsta->ssid_len))) { |
0795af57 | 3175 | printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" |
f0706e82 | 3176 | " based on configured SSID\n", |
0795af57 | 3177 | dev->name, print_mac(mac, bssid)); |
f0706e82 JB |
3178 | return ieee80211_sta_join_ibss(dev, ifsta, bss); |
3179 | } | |
3180 | #ifdef CONFIG_MAC80211_IBSS_DEBUG | |
3181 | printk(KERN_DEBUG " did not try to join ibss\n"); | |
3182 | #endif /* CONFIG_MAC80211_IBSS_DEBUG */ | |
3183 | ||
3184 | /* Selected IBSS not found in current scan results - try to scan */ | |
3185 | if (ifsta->state == IEEE80211_IBSS_JOINED && | |
3186 | !ieee80211_sta_active_ibss(dev)) { | |
3187 | mod_timer(&ifsta->timer, jiffies + | |
3188 | IEEE80211_IBSS_MERGE_INTERVAL); | |
3189 | } else if (time_after(jiffies, local->last_scan_completed + | |
3190 | IEEE80211_SCAN_INTERVAL)) { | |
3191 | printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to " | |
3192 | "join\n", dev->name); | |
3193 | return ieee80211_sta_req_scan(dev, ifsta->ssid, | |
3194 | ifsta->ssid_len); | |
3195 | } else if (ifsta->state != IEEE80211_IBSS_JOINED) { | |
3196 | int interval = IEEE80211_SCAN_INTERVAL; | |
3197 | ||
3198 | if (time_after(jiffies, ifsta->ibss_join_req + | |
3199 | IEEE80211_IBSS_JOIN_TIMEOUT)) { | |
d6f2da5b | 3200 | if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && |
8318d78a JB |
3201 | (!(local->oper_channel->flags & |
3202 | IEEE80211_CHAN_NO_IBSS))) | |
f0706e82 | 3203 | return ieee80211_sta_create_ibss(dev, ifsta); |
d6f2da5b | 3204 | if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { |
8318d78a JB |
3205 | printk(KERN_DEBUG "%s: IBSS not allowed on" |
3206 | " %d MHz\n", dev->name, | |
3207 | local->hw.conf.channel->center_freq); | |
f0706e82 JB |
3208 | } |
3209 | ||
3210 | /* No IBSS found - decrease scan interval and continue | |
3211 | * scanning. */ | |
3212 | interval = IEEE80211_SCAN_INTERVAL_SLOW; | |
3213 | } | |
3214 | ||
3215 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3216 | mod_timer(&ifsta->timer, jiffies + interval); | |
3217 | return 0; | |
3218 | } | |
3219 | ||
3220 | return 0; | |
3221 | } | |
3222 | ||
3223 | ||
3224 | int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) | |
3225 | { | |
8318d78a | 3226 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
f0706e82 JB |
3227 | struct ieee80211_if_sta *ifsta; |
3228 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3229 | ||
3230 | if (len > IEEE80211_MAX_SSID_LEN) | |
3231 | return -EINVAL; | |
3232 | ||
3233 | /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is | |
3234 | * not defined. */ | |
3235 | if (local->ops->conf_tx) { | |
3236 | struct ieee80211_tx_queue_params qparam; | |
3237 | int i; | |
3238 | ||
3239 | memset(&qparam, 0, sizeof(qparam)); | |
8318d78a | 3240 | |
f0706e82 | 3241 | qparam.aifs = 2; |
8318d78a JB |
3242 | |
3243 | if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && | |
3244 | !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) | |
3245 | qparam.cw_min = 31; | |
3246 | else | |
3247 | qparam.cw_min = 15; | |
3248 | ||
f0706e82 | 3249 | qparam.cw_max = 1023; |
3330d7be | 3250 | qparam.txop = 0; |
8318d78a | 3251 | |
f0706e82 | 3252 | for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++) |
f0706e82 JB |
3253 | local->ops->conf_tx(local_to_hw(local), |
3254 | i + IEEE80211_TX_QUEUE_DATA0, | |
3255 | &qparam); | |
8318d78a | 3256 | |
f0706e82 JB |
3257 | /* IBSS uses different parameters for Beacon sending */ |
3258 | qparam.cw_min++; | |
3259 | qparam.cw_min *= 2; | |
3260 | qparam.cw_min--; | |
3261 | local->ops->conf_tx(local_to_hw(local), | |
3262 | IEEE80211_TX_QUEUE_BEACON, &qparam); | |
3263 | } | |
3264 | ||
f0706e82 JB |
3265 | ifsta = &sdata->u.sta; |
3266 | ||
3267 | if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) | |
d6f2da5b | 3268 | ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET; |
f0706e82 JB |
3269 | memcpy(ifsta->ssid, ssid, len); |
3270 | memset(ifsta->ssid + len, 0, IEEE80211_MAX_SSID_LEN - len); | |
3271 | ifsta->ssid_len = len; | |
3272 | ||
d6f2da5b JS |
3273 | if (len) |
3274 | ifsta->flags |= IEEE80211_STA_SSID_SET; | |
3275 | else | |
3276 | ifsta->flags &= ~IEEE80211_STA_SSID_SET; | |
51fb61e7 | 3277 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
d6f2da5b | 3278 | !(ifsta->flags & IEEE80211_STA_BSSID_SET)) { |
f0706e82 JB |
3279 | ifsta->ibss_join_req = jiffies; |
3280 | ifsta->state = IEEE80211_IBSS_SEARCH; | |
3281 | return ieee80211_sta_find_ibss(dev, ifsta); | |
3282 | } | |
3283 | return 0; | |
3284 | } | |
3285 | ||
3286 | ||
3287 | int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len) | |
3288 | { | |
3289 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3290 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3291 | memcpy(ssid, ifsta->ssid, ifsta->ssid_len); | |
3292 | *len = ifsta->ssid_len; | |
3293 | return 0; | |
3294 | } | |
3295 | ||
3296 | ||
3297 | int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid) | |
3298 | { | |
3299 | struct ieee80211_sub_if_data *sdata; | |
3300 | struct ieee80211_if_sta *ifsta; | |
3301 | int res; | |
3302 | ||
3303 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3304 | ifsta = &sdata->u.sta; | |
3305 | ||
3306 | if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) { | |
3307 | memcpy(ifsta->bssid, bssid, ETH_ALEN); | |
3308 | res = ieee80211_if_config(dev); | |
3309 | if (res) { | |
3310 | printk(KERN_DEBUG "%s: Failed to config new BSSID to " | |
3311 | "the low-level driver\n", dev->name); | |
3312 | return res; | |
3313 | } | |
3314 | } | |
3315 | ||
d6f2da5b JS |
3316 | if (is_valid_ether_addr(bssid)) |
3317 | ifsta->flags |= IEEE80211_STA_BSSID_SET; | |
f0706e82 | 3318 | else |
d6f2da5b JS |
3319 | ifsta->flags &= ~IEEE80211_STA_BSSID_SET; |
3320 | ||
f0706e82 JB |
3321 | return 0; |
3322 | } | |
3323 | ||
3324 | ||
3325 | static void ieee80211_send_nullfunc(struct ieee80211_local *local, | |
3326 | struct ieee80211_sub_if_data *sdata, | |
3327 | int powersave) | |
3328 | { | |
3329 | struct sk_buff *skb; | |
3330 | struct ieee80211_hdr *nullfunc; | |
3331 | u16 fc; | |
3332 | ||
3333 | skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24); | |
3334 | if (!skb) { | |
3335 | printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc " | |
3336 | "frame\n", sdata->dev->name); | |
3337 | return; | |
3338 | } | |
3339 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
3340 | ||
3341 | nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24); | |
3342 | memset(nullfunc, 0, 24); | |
3343 | fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | | |
3344 | IEEE80211_FCTL_TODS; | |
3345 | if (powersave) | |
3346 | fc |= IEEE80211_FCTL_PM; | |
3347 | nullfunc->frame_control = cpu_to_le16(fc); | |
3348 | memcpy(nullfunc->addr1, sdata->u.sta.bssid, ETH_ALEN); | |
3349 | memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN); | |
3350 | memcpy(nullfunc->addr3, sdata->u.sta.bssid, ETH_ALEN); | |
3351 | ||
3352 | ieee80211_sta_tx(sdata->dev, skb, 0); | |
3353 | } | |
3354 | ||
3355 | ||
3356 | void ieee80211_scan_completed(struct ieee80211_hw *hw) | |
3357 | { | |
3358 | struct ieee80211_local *local = hw_to_local(hw); | |
3359 | struct net_device *dev = local->scan_dev; | |
3360 | struct ieee80211_sub_if_data *sdata; | |
3361 | union iwreq_data wrqu; | |
3362 | ||
3363 | local->last_scan_completed = jiffies; | |
ece8eddd ZY |
3364 | memset(&wrqu, 0, sizeof(wrqu)); |
3365 | wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); | |
f0706e82 | 3366 | |
ece8eddd ZY |
3367 | if (local->sta_hw_scanning) { |
3368 | local->sta_hw_scanning = 0; | |
3369 | goto done; | |
3370 | } | |
3371 | ||
3372 | local->sta_sw_scanning = 0; | |
f0706e82 | 3373 | if (ieee80211_hw_config(local)) |
4b50e388 | 3374 | printk(KERN_DEBUG "%s: failed to restore operational " |
f0706e82 JB |
3375 | "channel after scan\n", dev->name); |
3376 | ||
4150c572 JB |
3377 | |
3378 | netif_tx_lock_bh(local->mdev); | |
3379 | local->filter_flags &= ~FIF_BCN_PRBRESP_PROMISC; | |
3380 | local->ops->configure_filter(local_to_hw(local), | |
3381 | FIF_BCN_PRBRESP_PROMISC, | |
3382 | &local->filter_flags, | |
3383 | local->mdev->mc_count, | |
3384 | local->mdev->mc_list); | |
3385 | ||
3386 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 | 3387 | |
79010420 JB |
3388 | rcu_read_lock(); |
3389 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3390 | |
3391 | /* No need to wake the master device. */ | |
3392 | if (sdata->dev == local->mdev) | |
3393 | continue; | |
3394 | ||
51fb61e7 | 3395 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { |
d6f2da5b | 3396 | if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) |
f0706e82 JB |
3397 | ieee80211_send_nullfunc(local, sdata, 0); |
3398 | ieee80211_sta_timer((unsigned long)sdata); | |
3399 | } | |
14042cbe | 3400 | |
f0706e82 JB |
3401 | netif_wake_queue(sdata->dev); |
3402 | } | |
79010420 | 3403 | rcu_read_unlock(); |
f0706e82 | 3404 | |
ece8eddd | 3405 | done: |
f0706e82 | 3406 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
51fb61e7 | 3407 | if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS) { |
f0706e82 | 3408 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; |
d6f2da5b | 3409 | if (!(ifsta->flags & IEEE80211_STA_BSSID_SET) || |
f0706e82 JB |
3410 | (!ifsta->state == IEEE80211_IBSS_JOINED && |
3411 | !ieee80211_sta_active_ibss(dev))) | |
3412 | ieee80211_sta_find_ibss(dev, ifsta); | |
3413 | } | |
3414 | } | |
3415 | EXPORT_SYMBOL(ieee80211_scan_completed); | |
3416 | ||
3417 | void ieee80211_sta_scan_work(struct work_struct *work) | |
3418 | { | |
3419 | struct ieee80211_local *local = | |
3420 | container_of(work, struct ieee80211_local, scan_work.work); | |
3421 | struct net_device *dev = local->scan_dev; | |
3422 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
8318d78a | 3423 | struct ieee80211_supported_band *sband; |
f0706e82 JB |
3424 | struct ieee80211_channel *chan; |
3425 | int skip; | |
3426 | unsigned long next_delay = 0; | |
3427 | ||
ece8eddd | 3428 | if (!local->sta_sw_scanning) |
f0706e82 JB |
3429 | return; |
3430 | ||
3431 | switch (local->scan_state) { | |
3432 | case SCAN_SET_CHANNEL: | |
69d464d5 JB |
3433 | /* |
3434 | * Get current scan band. scan_band may be IEEE80211_NUM_BANDS | |
3435 | * after we successfully scanned the last channel of the last | |
3436 | * band (and the last band is supported by the hw) | |
3437 | */ | |
8318d78a JB |
3438 | if (local->scan_band < IEEE80211_NUM_BANDS) |
3439 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3440 | else | |
3441 | sband = NULL; | |
3442 | ||
69d464d5 JB |
3443 | /* |
3444 | * If we are at an unsupported band and have more bands | |
3445 | * left to scan, advance to the next supported one. | |
3446 | */ | |
3447 | while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { | |
8318d78a JB |
3448 | local->scan_band++; |
3449 | sband = local->hw.wiphy->bands[local->scan_band]; | |
3450 | local->scan_channel_idx = 0; | |
3451 | } | |
3452 | ||
69d464d5 JB |
3453 | /* if no more bands/channels left, complete scan */ |
3454 | if (!sband || local->scan_channel_idx >= sband->n_channels) { | |
f0706e82 JB |
3455 | ieee80211_scan_completed(local_to_hw(local)); |
3456 | return; | |
3457 | } | |
8318d78a JB |
3458 | skip = 0; |
3459 | chan = &sband->channels[local->scan_channel_idx]; | |
3460 | ||
3461 | if (chan->flags & IEEE80211_CHAN_DISABLED || | |
51fb61e7 | 3462 | (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && |
8318d78a | 3463 | chan->flags & IEEE80211_CHAN_NO_IBSS)) |
f0706e82 JB |
3464 | skip = 1; |
3465 | ||
3466 | if (!skip) { | |
f0706e82 JB |
3467 | local->scan_channel = chan; |
3468 | if (ieee80211_hw_config(local)) { | |
8318d78a JB |
3469 | printk(KERN_DEBUG "%s: failed to set freq to " |
3470 | "%d MHz for scan\n", dev->name, | |
3471 | chan->center_freq); | |
f0706e82 JB |
3472 | skip = 1; |
3473 | } | |
3474 | } | |
3475 | ||
69d464d5 | 3476 | /* advance state machine to next channel/band */ |
f0706e82 | 3477 | local->scan_channel_idx++; |
8318d78a | 3478 | if (local->scan_channel_idx >= sband->n_channels) { |
69d464d5 JB |
3479 | /* |
3480 | * scan_band may end up == IEEE80211_NUM_BANDS, but | |
3481 | * we'll catch that case above and complete the scan | |
3482 | * if that is the case. | |
3483 | */ | |
8318d78a JB |
3484 | local->scan_band++; |
3485 | local->scan_channel_idx = 0; | |
f0706e82 JB |
3486 | } |
3487 | ||
3488 | if (skip) | |
3489 | break; | |
3490 | ||
3491 | next_delay = IEEE80211_PROBE_DELAY + | |
3492 | usecs_to_jiffies(local->hw.channel_change_time); | |
3493 | local->scan_state = SCAN_SEND_PROBE; | |
3494 | break; | |
3495 | case SCAN_SEND_PROBE: | |
8318d78a | 3496 | next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; |
f0706e82 | 3497 | local->scan_state = SCAN_SET_CHANNEL; |
8318d78a JB |
3498 | |
3499 | if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
3500 | break; | |
3501 | ieee80211_send_probe_req(dev, NULL, local->scan_ssid, | |
3502 | local->scan_ssid_len); | |
3503 | next_delay = IEEE80211_CHANNEL_TIME; | |
f0706e82 JB |
3504 | break; |
3505 | } | |
3506 | ||
ece8eddd | 3507 | if (local->sta_sw_scanning) |
f0706e82 JB |
3508 | queue_delayed_work(local->hw.workqueue, &local->scan_work, |
3509 | next_delay); | |
3510 | } | |
3511 | ||
3512 | ||
3513 | static int ieee80211_sta_start_scan(struct net_device *dev, | |
3514 | u8 *ssid, size_t ssid_len) | |
3515 | { | |
3516 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3517 | struct ieee80211_sub_if_data *sdata; | |
3518 | ||
3519 | if (ssid_len > IEEE80211_MAX_SSID_LEN) | |
3520 | return -EINVAL; | |
3521 | ||
3522 | /* MLME-SCAN.request (page 118) page 144 (11.1.3.1) | |
3523 | * BSSType: INFRASTRUCTURE, INDEPENDENT, ANY_BSS | |
3524 | * BSSID: MACAddress | |
3525 | * SSID | |
3526 | * ScanType: ACTIVE, PASSIVE | |
3527 | * ProbeDelay: delay (in microseconds) to be used prior to transmitting | |
3528 | * a Probe frame during active scanning | |
3529 | * ChannelList | |
3530 | * MinChannelTime (>= ProbeDelay), in TU | |
3531 | * MaxChannelTime: (>= MinChannelTime), in TU | |
3532 | */ | |
3533 | ||
3534 | /* MLME-SCAN.confirm | |
3535 | * BSSDescriptionSet | |
3536 | * ResultCode: SUCCESS, INVALID_PARAMETERS | |
3537 | */ | |
3538 | ||
ece8eddd | 3539 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
3540 | if (local->scan_dev == dev) |
3541 | return 0; | |
3542 | return -EBUSY; | |
3543 | } | |
3544 | ||
3545 | if (local->ops->hw_scan) { | |
3546 | int rc = local->ops->hw_scan(local_to_hw(local), | |
ece8eddd | 3547 | ssid, ssid_len); |
f0706e82 | 3548 | if (!rc) { |
ece8eddd | 3549 | local->sta_hw_scanning = 1; |
f0706e82 JB |
3550 | local->scan_dev = dev; |
3551 | } | |
3552 | return rc; | |
3553 | } | |
3554 | ||
ece8eddd | 3555 | local->sta_sw_scanning = 1; |
f0706e82 | 3556 | |
79010420 JB |
3557 | rcu_read_lock(); |
3558 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
14042cbe MN |
3559 | |
3560 | /* Don't stop the master interface, otherwise we can't transmit | |
3561 | * probes! */ | |
3562 | if (sdata->dev == local->mdev) | |
3563 | continue; | |
3564 | ||
f0706e82 | 3565 | netif_stop_queue(sdata->dev); |
51fb61e7 | 3566 | if (sdata->vif.type == IEEE80211_IF_TYPE_STA && |
d6f2da5b | 3567 | (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
3568 | ieee80211_send_nullfunc(local, sdata, 1); |
3569 | } | |
79010420 | 3570 | rcu_read_unlock(); |
f0706e82 JB |
3571 | |
3572 | if (ssid) { | |
3573 | local->scan_ssid_len = ssid_len; | |
3574 | memcpy(local->scan_ssid, ssid, ssid_len); | |
3575 | } else | |
3576 | local->scan_ssid_len = 0; | |
3577 | local->scan_state = SCAN_SET_CHANNEL; | |
f0706e82 | 3578 | local->scan_channel_idx = 0; |
8318d78a | 3579 | local->scan_band = IEEE80211_BAND_2GHZ; |
f0706e82 JB |
3580 | local->scan_dev = dev; |
3581 | ||
4150c572 JB |
3582 | netif_tx_lock_bh(local->mdev); |
3583 | local->filter_flags |= FIF_BCN_PRBRESP_PROMISC; | |
3584 | local->ops->configure_filter(local_to_hw(local), | |
3585 | FIF_BCN_PRBRESP_PROMISC, | |
3586 | &local->filter_flags, | |
3587 | local->mdev->mc_count, | |
3588 | local->mdev->mc_list); | |
3589 | netif_tx_unlock_bh(local->mdev); | |
f0706e82 JB |
3590 | |
3591 | /* TODO: start scan as soon as all nullfunc frames are ACKed */ | |
3592 | queue_delayed_work(local->hw.workqueue, &local->scan_work, | |
3593 | IEEE80211_CHANNEL_TIME); | |
3594 | ||
3595 | return 0; | |
3596 | } | |
3597 | ||
3598 | ||
3599 | int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len) | |
3600 | { | |
3601 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3602 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3603 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3604 | ||
51fb61e7 | 3605 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3606 | return ieee80211_sta_start_scan(dev, ssid, ssid_len); |
3607 | ||
ece8eddd | 3608 | if (local->sta_sw_scanning || local->sta_hw_scanning) { |
f0706e82 JB |
3609 | if (local->scan_dev == dev) |
3610 | return 0; | |
3611 | return -EBUSY; | |
3612 | } | |
3613 | ||
a0af5f14 HS |
3614 | ifsta->scan_ssid_len = ssid_len; |
3615 | if (ssid_len) | |
3616 | memcpy(ifsta->scan_ssid, ssid, ssid_len); | |
f0706e82 JB |
3617 | set_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request); |
3618 | queue_work(local->hw.workqueue, &ifsta->work); | |
3619 | return 0; | |
3620 | } | |
3621 | ||
3622 | static char * | |
3623 | ieee80211_sta_scan_result(struct net_device *dev, | |
3624 | struct ieee80211_sta_bss *bss, | |
3625 | char *current_ev, char *end_buf) | |
3626 | { | |
3627 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3628 | struct iw_event iwe; | |
3629 | ||
3630 | if (time_after(jiffies, | |
3631 | bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) | |
3632 | return current_ev; | |
3633 | ||
f0706e82 JB |
3634 | memset(&iwe, 0, sizeof(iwe)); |
3635 | iwe.cmd = SIOCGIWAP; | |
3636 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
3637 | memcpy(iwe.u.ap_addr.sa_data, bss->bssid, ETH_ALEN); | |
3638 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3639 | IW_EV_ADDR_LEN); | |
3640 | ||
3641 | memset(&iwe, 0, sizeof(iwe)); | |
3642 | iwe.cmd = SIOCGIWESSID; | |
3643 | iwe.u.data.length = bss->ssid_len; | |
3644 | iwe.u.data.flags = 1; | |
3645 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3646 | bss->ssid); | |
3647 | ||
3648 | if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { | |
3649 | memset(&iwe, 0, sizeof(iwe)); | |
3650 | iwe.cmd = SIOCGIWMODE; | |
3651 | if (bss->capability & WLAN_CAPABILITY_ESS) | |
3652 | iwe.u.mode = IW_MODE_MASTER; | |
3653 | else | |
3654 | iwe.u.mode = IW_MODE_ADHOC; | |
3655 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3656 | IW_EV_UINT_LEN); | |
3657 | } | |
3658 | ||
3659 | memset(&iwe, 0, sizeof(iwe)); | |
3660 | iwe.cmd = SIOCGIWFREQ; | |
8318d78a JB |
3661 | iwe.u.freq.m = bss->freq; |
3662 | iwe.u.freq.e = 6; | |
f0706e82 JB |
3663 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, |
3664 | IW_EV_FREQ_LEN); | |
8318d78a JB |
3665 | |
3666 | memset(&iwe, 0, sizeof(iwe)); | |
3667 | iwe.cmd = SIOCGIWFREQ; | |
3668 | iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); | |
3669 | iwe.u.freq.e = 0; | |
f0706e82 JB |
3670 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, |
3671 | IW_EV_FREQ_LEN); | |
3672 | ||
3673 | memset(&iwe, 0, sizeof(iwe)); | |
3674 | iwe.cmd = IWEVQUAL; | |
3675 | iwe.u.qual.qual = bss->signal; | |
3676 | iwe.u.qual.level = bss->rssi; | |
3677 | iwe.u.qual.noise = bss->noise; | |
3678 | iwe.u.qual.updated = local->wstats_flags; | |
3679 | current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, | |
3680 | IW_EV_QUAL_LEN); | |
3681 | ||
3682 | memset(&iwe, 0, sizeof(iwe)); | |
3683 | iwe.cmd = SIOCGIWENCODE; | |
3684 | if (bss->capability & WLAN_CAPABILITY_PRIVACY) | |
3685 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
3686 | else | |
3687 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
3688 | iwe.u.data.length = 0; | |
3689 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, ""); | |
3690 | ||
3691 | if (bss && bss->wpa_ie) { | |
3692 | memset(&iwe, 0, sizeof(iwe)); | |
3693 | iwe.cmd = IWEVGENIE; | |
3694 | iwe.u.data.length = bss->wpa_ie_len; | |
3695 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3696 | bss->wpa_ie); | |
3697 | } | |
3698 | ||
3699 | if (bss && bss->rsn_ie) { | |
3700 | memset(&iwe, 0, sizeof(iwe)); | |
3701 | iwe.cmd = IWEVGENIE; | |
3702 | iwe.u.data.length = bss->rsn_ie_len; | |
3703 | current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, | |
3704 | bss->rsn_ie); | |
3705 | } | |
3706 | ||
3707 | if (bss && bss->supp_rates_len > 0) { | |
3708 | /* display all supported rates in readable format */ | |
3709 | char *p = current_ev + IW_EV_LCP_LEN; | |
3710 | int i; | |
3711 | ||
3712 | memset(&iwe, 0, sizeof(iwe)); | |
3713 | iwe.cmd = SIOCGIWRATE; | |
3714 | /* Those two flags are ignored... */ | |
3715 | iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0; | |
3716 | ||
3717 | for (i = 0; i < bss->supp_rates_len; i++) { | |
3718 | iwe.u.bitrate.value = ((bss->supp_rates[i] & | |
3719 | 0x7f) * 500000); | |
3720 | p = iwe_stream_add_value(current_ev, p, | |
3721 | end_buf, &iwe, IW_EV_PARAM_LEN); | |
3722 | } | |
3723 | current_ev = p; | |
3724 | } | |
3725 | ||
3726 | if (bss) { | |
3727 | char *buf; | |
3728 | buf = kmalloc(30, GFP_ATOMIC); | |
3729 | if (buf) { | |
3730 | memset(&iwe, 0, sizeof(iwe)); | |
3731 | iwe.cmd = IWEVCUSTOM; | |
3732 | sprintf(buf, "tsf=%016llx", (unsigned long long)(bss->timestamp)); | |
3733 | iwe.u.data.length = strlen(buf); | |
3734 | current_ev = iwe_stream_add_point(current_ev, end_buf, | |
3735 | &iwe, buf); | |
3736 | kfree(buf); | |
3737 | } | |
3738 | } | |
3739 | ||
f0706e82 JB |
3740 | return current_ev; |
3741 | } | |
3742 | ||
3743 | ||
3744 | int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len) | |
3745 | { | |
3746 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3747 | char *current_ev = buf; | |
3748 | char *end_buf = buf + len; | |
3749 | struct ieee80211_sta_bss *bss; | |
3750 | ||
3751 | spin_lock_bh(&local->sta_bss_lock); | |
3752 | list_for_each_entry(bss, &local->sta_bss_list, list) { | |
3753 | if (buf + len - current_ev <= IW_EV_ADDR_LEN) { | |
3754 | spin_unlock_bh(&local->sta_bss_lock); | |
3755 | return -E2BIG; | |
3756 | } | |
3757 | current_ev = ieee80211_sta_scan_result(dev, bss, current_ev, | |
3758 | end_buf); | |
3759 | } | |
3760 | spin_unlock_bh(&local->sta_bss_lock); | |
3761 | return current_ev - buf; | |
3762 | } | |
3763 | ||
3764 | ||
3765 | int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len) | |
3766 | { | |
3767 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3768 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3769 | kfree(ifsta->extra_ie); | |
3770 | if (len == 0) { | |
3771 | ifsta->extra_ie = NULL; | |
3772 | ifsta->extra_ie_len = 0; | |
3773 | return 0; | |
3774 | } | |
3775 | ifsta->extra_ie = kmalloc(len, GFP_KERNEL); | |
3776 | if (!ifsta->extra_ie) { | |
3777 | ifsta->extra_ie_len = 0; | |
3778 | return -ENOMEM; | |
3779 | } | |
3780 | memcpy(ifsta->extra_ie, ie, len); | |
3781 | ifsta->extra_ie_len = len; | |
3782 | return 0; | |
3783 | } | |
3784 | ||
3785 | ||
3786 | struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, | |
3787 | struct sk_buff *skb, u8 *bssid, | |
3788 | u8 *addr) | |
3789 | { | |
3790 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
3791 | struct sta_info *sta; | |
91fa558b | 3792 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0795af57 | 3793 | DECLARE_MAC_BUF(mac); |
f0706e82 JB |
3794 | |
3795 | /* TODO: Could consider removing the least recently used entry and | |
3796 | * allow new one to be added. */ | |
3797 | if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) { | |
3798 | if (net_ratelimit()) { | |
3799 | printk(KERN_DEBUG "%s: No room for a new IBSS STA " | |
0795af57 | 3800 | "entry %s\n", dev->name, print_mac(mac, addr)); |
f0706e82 JB |
3801 | } |
3802 | return NULL; | |
3803 | } | |
3804 | ||
0795af57 | 3805 | printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", |
dd1cd4c6 | 3806 | wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); |
f0706e82 JB |
3807 | |
3808 | sta = sta_info_add(local, dev, addr, GFP_ATOMIC); | |
43ba7e95 | 3809 | if (IS_ERR(sta)) |
f0706e82 JB |
3810 | return NULL; |
3811 | ||
238814fd JB |
3812 | sta->flags |= WLAN_STA_AUTHORIZED; |
3813 | ||
8318d78a JB |
3814 | sta->supp_rates[local->hw.conf.channel->band] = |
3815 | sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band]; | |
f0706e82 JB |
3816 | |
3817 | rate_control_rate_init(sta, local); | |
3818 | ||
3819 | return sta; /* caller will call sta_info_put() */ | |
3820 | } | |
3821 | ||
3822 | ||
3823 | int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason) | |
3824 | { | |
3825 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3826 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3827 | ||
3828 | printk(KERN_DEBUG "%s: deauthenticate(reason=%d)\n", | |
3829 | dev->name, reason); | |
3830 | ||
51fb61e7 JB |
3831 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA && |
3832 | sdata->vif.type != IEEE80211_IF_TYPE_IBSS) | |
f0706e82 JB |
3833 | return -EINVAL; |
3834 | ||
3835 | ieee80211_send_deauth(dev, ifsta, reason); | |
3836 | ieee80211_set_disassoc(dev, ifsta, 1); | |
3837 | return 0; | |
3838 | } | |
3839 | ||
3840 | ||
3841 | int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) | |
3842 | { | |
3843 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
3844 | struct ieee80211_if_sta *ifsta = &sdata->u.sta; | |
3845 | ||
3846 | printk(KERN_DEBUG "%s: disassociate(reason=%d)\n", | |
3847 | dev->name, reason); | |
3848 | ||
51fb61e7 | 3849 | if (sdata->vif.type != IEEE80211_IF_TYPE_STA) |
f0706e82 JB |
3850 | return -EINVAL; |
3851 | ||
d6f2da5b | 3852 | if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED)) |
f0706e82 JB |
3853 | return -1; |
3854 | ||
3855 | ieee80211_send_disassoc(dev, ifsta, reason); | |
3856 | ieee80211_set_disassoc(dev, ifsta, 0); | |
3857 | return 0; | |
3858 | } |