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Commit | Line | Data |
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b23aa676 SO |
1 | /* |
2 | * SME code for cfg80211's connect emulation. | |
3 | * | |
4 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> | |
5 | * Copyright (C) 2009 Intel Corporation. All rights reserved. | |
6 | */ | |
7 | ||
8 | #include <linux/etherdevice.h> | |
9 | #include <linux/if_arp.h> | |
10 | #include <linux/workqueue.h> | |
a9a11622 JB |
11 | #include <linux/wireless.h> |
12 | #include <net/iw_handler.h> | |
b23aa676 SO |
13 | #include <net/cfg80211.h> |
14 | #include <net/rtnetlink.h> | |
15 | #include "nl80211.h" | |
8b19e6ca | 16 | #include "reg.h" |
b23aa676 | 17 | |
6829c878 JB |
18 | struct cfg80211_conn { |
19 | struct cfg80211_connect_params params; | |
20 | /* these are sub-states of the _CONNECTING sme_state */ | |
21 | enum { | |
22 | CFG80211_CONN_IDLE, | |
23 | CFG80211_CONN_SCANNING, | |
24 | CFG80211_CONN_SCAN_AGAIN, | |
25 | CFG80211_CONN_AUTHENTICATE_NEXT, | |
26 | CFG80211_CONN_AUTHENTICATING, | |
27 | CFG80211_CONN_ASSOCIATE_NEXT, | |
28 | CFG80211_CONN_ASSOCIATING, | |
29 | } state; | |
f401a6f7 | 30 | u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; |
6829c878 JB |
31 | u8 *ie; |
32 | size_t ie_len; | |
f401a6f7 | 33 | bool auto_auth, prev_bssid_valid; |
6829c878 JB |
34 | }; |
35 | ||
36 | ||
37 | static int cfg80211_conn_scan(struct wireless_dev *wdev) | |
38 | { | |
79c97e97 | 39 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
40 | struct cfg80211_scan_request *request; |
41 | int n_channels, err; | |
42 | ||
43 | ASSERT_RTNL(); | |
79c97e97 | 44 | ASSERT_RDEV_LOCK(rdev); |
667503dd | 45 | ASSERT_WDEV_LOCK(wdev); |
6829c878 | 46 | |
79c97e97 | 47 | if (rdev->scan_req) |
6829c878 JB |
48 | return -EBUSY; |
49 | ||
50 | if (wdev->conn->params.channel) { | |
51 | n_channels = 1; | |
52 | } else { | |
53 | enum ieee80211_band band; | |
54 | n_channels = 0; | |
55 | ||
56 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
57 | if (!wdev->wiphy->bands[band]) | |
58 | continue; | |
59 | n_channels += wdev->wiphy->bands[band]->n_channels; | |
60 | } | |
61 | } | |
62 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + | |
63 | sizeof(request->channels[0]) * n_channels, | |
64 | GFP_KERNEL); | |
65 | if (!request) | |
66 | return -ENOMEM; | |
67 | ||
68 | request->channels = (void *)((char *)request + sizeof(*request)); | |
69 | if (wdev->conn->params.channel) | |
70 | request->channels[0] = wdev->conn->params.channel; | |
71 | else { | |
72 | int i = 0, j; | |
73 | enum ieee80211_band band; | |
74 | ||
75 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { | |
76 | if (!wdev->wiphy->bands[band]) | |
77 | continue; | |
78 | for (j = 0; j < wdev->wiphy->bands[band]->n_channels; | |
79 | i++, j++) | |
80 | request->channels[i] = | |
81 | &wdev->wiphy->bands[band]->channels[j]; | |
82 | } | |
83 | } | |
84 | request->n_channels = n_channels; | |
85 | request->ssids = (void *)(request->channels + n_channels); | |
86 | request->n_ssids = 1; | |
87 | ||
88 | memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, | |
89 | wdev->conn->params.ssid_len); | |
90 | request->ssids[0].ssid_len = wdev->conn->params.ssid_len; | |
91 | ||
463d0183 | 92 | request->dev = wdev->netdev; |
79c97e97 | 93 | request->wiphy = &rdev->wiphy; |
6829c878 | 94 | |
79c97e97 | 95 | rdev->scan_req = request; |
6829c878 | 96 | |
79c97e97 | 97 | err = rdev->ops->scan(wdev->wiphy, wdev->netdev, request); |
6829c878 JB |
98 | if (!err) { |
99 | wdev->conn->state = CFG80211_CONN_SCANNING; | |
79c97e97 | 100 | nl80211_send_scan_start(rdev, wdev->netdev); |
463d0183 | 101 | dev_hold(wdev->netdev); |
6829c878 | 102 | } else { |
79c97e97 | 103 | rdev->scan_req = NULL; |
6829c878 JB |
104 | kfree(request); |
105 | } | |
106 | return err; | |
107 | } | |
108 | ||
109 | static int cfg80211_conn_do_work(struct wireless_dev *wdev) | |
110 | { | |
79c97e97 | 111 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
19957bb3 | 112 | struct cfg80211_connect_params *params; |
f401a6f7 | 113 | const u8 *prev_bssid = NULL; |
19957bb3 | 114 | int err; |
6829c878 | 115 | |
667503dd JB |
116 | ASSERT_WDEV_LOCK(wdev); |
117 | ||
6829c878 JB |
118 | if (!wdev->conn) |
119 | return 0; | |
120 | ||
19957bb3 JB |
121 | params = &wdev->conn->params; |
122 | ||
6829c878 JB |
123 | switch (wdev->conn->state) { |
124 | case CFG80211_CONN_SCAN_AGAIN: | |
125 | return cfg80211_conn_scan(wdev); | |
126 | case CFG80211_CONN_AUTHENTICATE_NEXT: | |
79c97e97 | 127 | BUG_ON(!rdev->ops->auth); |
19957bb3 | 128 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
79c97e97 | 129 | return __cfg80211_mlme_auth(rdev, wdev->netdev, |
667503dd JB |
130 | params->channel, params->auth_type, |
131 | params->bssid, | |
132 | params->ssid, params->ssid_len, | |
fffd0934 JB |
133 | NULL, 0, |
134 | params->key, params->key_len, | |
135 | params->key_idx); | |
6829c878 | 136 | case CFG80211_CONN_ASSOCIATE_NEXT: |
79c97e97 | 137 | BUG_ON(!rdev->ops->assoc); |
19957bb3 | 138 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
f401a6f7 JB |
139 | if (wdev->conn->prev_bssid_valid) |
140 | prev_bssid = wdev->conn->prev_bssid; | |
79c97e97 | 141 | err = __cfg80211_mlme_assoc(rdev, wdev->netdev, |
667503dd | 142 | params->channel, params->bssid, |
f401a6f7 | 143 | prev_bssid, |
667503dd JB |
144 | params->ssid, params->ssid_len, |
145 | params->ie, params->ie_len, | |
146 | false, ¶ms->crypto); | |
19957bb3 | 147 | if (err) |
79c97e97 | 148 | __cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, |
667503dd JB |
149 | NULL, 0, |
150 | WLAN_REASON_DEAUTH_LEAVING); | |
19957bb3 | 151 | return err; |
6829c878 JB |
152 | default: |
153 | return 0; | |
154 | } | |
155 | } | |
156 | ||
157 | void cfg80211_conn_work(struct work_struct *work) | |
158 | { | |
79c97e97 | 159 | struct cfg80211_registered_device *rdev = |
6829c878 JB |
160 | container_of(work, struct cfg80211_registered_device, conn_work); |
161 | struct wireless_dev *wdev; | |
162 | ||
163 | rtnl_lock(); | |
79c97e97 JB |
164 | cfg80211_lock_rdev(rdev); |
165 | mutex_lock(&rdev->devlist_mtx); | |
6829c878 | 166 | |
79c97e97 | 167 | list_for_each_entry(wdev, &rdev->netdev_list, list) { |
667503dd JB |
168 | wdev_lock(wdev); |
169 | if (!netif_running(wdev->netdev)) { | |
170 | wdev_unlock(wdev); | |
6829c878 | 171 | continue; |
667503dd JB |
172 | } |
173 | if (wdev->sme_state != CFG80211_SME_CONNECTING) { | |
174 | wdev_unlock(wdev); | |
6829c878 | 175 | continue; |
667503dd | 176 | } |
6829c878 | 177 | if (cfg80211_conn_do_work(wdev)) |
667503dd JB |
178 | __cfg80211_connect_result( |
179 | wdev->netdev, | |
180 | wdev->conn->params.bssid, | |
181 | NULL, 0, NULL, 0, | |
182 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 183 | false, NULL); |
667503dd | 184 | wdev_unlock(wdev); |
6829c878 JB |
185 | } |
186 | ||
79c97e97 JB |
187 | mutex_unlock(&rdev->devlist_mtx); |
188 | cfg80211_unlock_rdev(rdev); | |
6829c878 JB |
189 | rtnl_unlock(); |
190 | } | |
191 | ||
192 | static bool cfg80211_get_conn_bss(struct wireless_dev *wdev) | |
193 | { | |
79c97e97 | 194 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 JB |
195 | struct cfg80211_bss *bss; |
196 | u16 capa = WLAN_CAPABILITY_ESS; | |
197 | ||
667503dd JB |
198 | ASSERT_WDEV_LOCK(wdev); |
199 | ||
6829c878 JB |
200 | if (wdev->conn->params.privacy) |
201 | capa |= WLAN_CAPABILITY_PRIVACY; | |
202 | ||
203 | bss = cfg80211_get_bss(wdev->wiphy, NULL, wdev->conn->params.bssid, | |
204 | wdev->conn->params.ssid, | |
205 | wdev->conn->params.ssid_len, | |
206 | WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_PRIVACY, | |
207 | capa); | |
6829c878 JB |
208 | if (!bss) |
209 | return false; | |
210 | ||
211 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); | |
212 | wdev->conn->params.bssid = wdev->conn->bssid; | |
213 | wdev->conn->params.channel = bss->channel; | |
214 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
79c97e97 | 215 | schedule_work(&rdev->conn_work); |
6829c878 JB |
216 | |
217 | cfg80211_put_bss(bss); | |
218 | return true; | |
219 | } | |
220 | ||
667503dd | 221 | static void __cfg80211_sme_scan_done(struct net_device *dev) |
6829c878 JB |
222 | { |
223 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
79c97e97 | 224 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
6829c878 | 225 | |
667503dd JB |
226 | ASSERT_WDEV_LOCK(wdev); |
227 | ||
6829c878 JB |
228 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
229 | return; | |
230 | ||
d4b1a687 | 231 | if (!wdev->conn) |
6829c878 JB |
232 | return; |
233 | ||
234 | if (wdev->conn->state != CFG80211_CONN_SCANNING && | |
235 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) | |
236 | return; | |
237 | ||
238 | if (!cfg80211_get_conn_bss(wdev)) { | |
239 | /* not found */ | |
240 | if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) | |
79c97e97 | 241 | schedule_work(&rdev->conn_work); |
6829c878 | 242 | else |
667503dd JB |
243 | __cfg80211_connect_result( |
244 | wdev->netdev, | |
245 | wdev->conn->params.bssid, | |
246 | NULL, 0, NULL, 0, | |
247 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 248 | false, NULL); |
6829c878 JB |
249 | } |
250 | } | |
251 | ||
667503dd JB |
252 | void cfg80211_sme_scan_done(struct net_device *dev) |
253 | { | |
254 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
255 | ||
59bbb6f7 | 256 | mutex_lock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx); |
667503dd JB |
257 | wdev_lock(wdev); |
258 | __cfg80211_sme_scan_done(dev); | |
259 | wdev_unlock(wdev); | |
59bbb6f7 | 260 | mutex_unlock(&wiphy_to_dev(wdev->wiphy)->devlist_mtx); |
667503dd JB |
261 | } |
262 | ||
263 | void cfg80211_sme_rx_auth(struct net_device *dev, | |
264 | const u8 *buf, size_t len) | |
6829c878 JB |
265 | { |
266 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
267 | struct wiphy *wiphy = wdev->wiphy; | |
268 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
269 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; | |
270 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
271 | ||
667503dd JB |
272 | ASSERT_WDEV_LOCK(wdev); |
273 | ||
6829c878 JB |
274 | /* should only RX auth frames when connecting */ |
275 | if (wdev->sme_state != CFG80211_SME_CONNECTING) | |
276 | return; | |
277 | ||
278 | if (WARN_ON(!wdev->conn)) | |
279 | return; | |
280 | ||
281 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
282 | wdev->conn->auto_auth && | |
283 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
284 | /* select automatically between only open, shared, leap */ | |
285 | switch (wdev->conn->params.auth_type) { | |
286 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
fffd0934 JB |
287 | if (wdev->connect_keys) |
288 | wdev->conn->params.auth_type = | |
289 | NL80211_AUTHTYPE_SHARED_KEY; | |
290 | else | |
291 | wdev->conn->params.auth_type = | |
292 | NL80211_AUTHTYPE_NETWORK_EAP; | |
6829c878 JB |
293 | break; |
294 | case NL80211_AUTHTYPE_SHARED_KEY: | |
295 | wdev->conn->params.auth_type = | |
296 | NL80211_AUTHTYPE_NETWORK_EAP; | |
297 | break; | |
298 | default: | |
299 | /* huh? */ | |
300 | wdev->conn->params.auth_type = | |
301 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
302 | break; | |
303 | } | |
304 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
305 | schedule_work(&rdev->conn_work); | |
19957bb3 | 306 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
4bde0f7d | 307 | __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, |
df7fc0f9 | 308 | status_code, false, NULL); |
19957bb3 | 309 | } else if (wdev->sme_state == CFG80211_SME_CONNECTING && |
6829c878 JB |
310 | wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
311 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
312 | schedule_work(&rdev->conn_work); | |
313 | } | |
314 | } | |
b23aa676 | 315 | |
f401a6f7 JB |
316 | bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev) |
317 | { | |
318 | struct wiphy *wiphy = wdev->wiphy; | |
319 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); | |
320 | ||
321 | if (WARN_ON(!wdev->conn)) | |
322 | return false; | |
323 | ||
324 | if (!wdev->conn->prev_bssid_valid) | |
325 | return false; | |
326 | ||
327 | /* | |
328 | * Some stupid APs don't accept reassoc, so we | |
329 | * need to fall back to trying regular assoc. | |
330 | */ | |
331 | wdev->conn->prev_bssid_valid = false; | |
332 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
333 | schedule_work(&rdev->conn_work); | |
334 | ||
335 | return true; | |
336 | } | |
337 | ||
667503dd JB |
338 | void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, |
339 | const u8 *req_ie, size_t req_ie_len, | |
340 | const u8 *resp_ie, size_t resp_ie_len, | |
df7fc0f9 JB |
341 | u16 status, bool wextev, |
342 | struct cfg80211_bss *bss) | |
b23aa676 SO |
343 | { |
344 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
8b19e6ca | 345 | u8 *country_ie; |
b23aa676 SO |
346 | #ifdef CONFIG_WIRELESS_EXT |
347 | union iwreq_data wrqu; | |
348 | #endif | |
349 | ||
667503dd JB |
350 | ASSERT_WDEV_LOCK(wdev); |
351 | ||
b23aa676 SO |
352 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
353 | return; | |
354 | ||
e45cd82a JB |
355 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
356 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, | |
357 | bssid, req_ie, req_ie_len, | |
667503dd | 358 | resp_ie, resp_ie_len, GFP_KERNEL); |
e45cd82a JB |
359 | else |
360 | nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, | |
361 | bssid, req_ie, req_ie_len, | |
362 | resp_ie, resp_ie_len, | |
667503dd | 363 | status, GFP_KERNEL); |
e45cd82a JB |
364 | |
365 | #ifdef CONFIG_WIRELESS_EXT | |
366 | if (wextev) { | |
367 | if (req_ie && status == WLAN_STATUS_SUCCESS) { | |
368 | memset(&wrqu, 0, sizeof(wrqu)); | |
369 | wrqu.data.length = req_ie_len; | |
3409ff77 | 370 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, req_ie); |
e45cd82a JB |
371 | } |
372 | ||
373 | if (resp_ie && status == WLAN_STATUS_SUCCESS) { | |
374 | memset(&wrqu, 0, sizeof(wrqu)); | |
375 | wrqu.data.length = resp_ie_len; | |
376 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); | |
377 | } | |
378 | ||
379 | memset(&wrqu, 0, sizeof(wrqu)); | |
380 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
f401a6f7 | 381 | if (bssid && status == WLAN_STATUS_SUCCESS) { |
e45cd82a | 382 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); |
f401a6f7 JB |
383 | memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN); |
384 | wdev->wext.prev_bssid_valid = true; | |
385 | } | |
e45cd82a JB |
386 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
387 | } | |
388 | #endif | |
389 | ||
df7fc0f9 JB |
390 | if (wdev->current_bss) { |
391 | cfg80211_unhold_bss(wdev->current_bss); | |
392 | cfg80211_put_bss(&wdev->current_bss->pub); | |
393 | wdev->current_bss = NULL; | |
394 | } | |
395 | ||
e45cd82a | 396 | if (status == WLAN_STATUS_SUCCESS && |
fffd0934 JB |
397 | wdev->sme_state == CFG80211_SME_IDLE) |
398 | goto success; | |
e45cd82a | 399 | |
6829c878 | 400 | if (wdev->sme_state != CFG80211_SME_CONNECTING) |
b23aa676 SO |
401 | return; |
402 | ||
19957bb3 JB |
403 | if (wdev->conn) |
404 | wdev->conn->state = CFG80211_CONN_IDLE; | |
405 | ||
fffd0934 | 406 | if (status != WLAN_STATUS_SUCCESS) { |
b23aa676 | 407 | wdev->sme_state = CFG80211_SME_IDLE; |
19957bb3 JB |
408 | kfree(wdev->conn); |
409 | wdev->conn = NULL; | |
fffd0934 JB |
410 | kfree(wdev->connect_keys); |
411 | wdev->connect_keys = NULL; | |
8dadadb7 | 412 | wdev->ssid_len = 0; |
fffd0934 | 413 | return; |
b23aa676 | 414 | } |
fffd0934 | 415 | |
df7fc0f9 JB |
416 | success: |
417 | if (!bss) | |
418 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
419 | wdev->ssid, wdev->ssid_len, | |
420 | WLAN_CAPABILITY_ESS, | |
421 | WLAN_CAPABILITY_ESS); | |
fffd0934 JB |
422 | |
423 | if (WARN_ON(!bss)) | |
424 | return; | |
425 | ||
426 | cfg80211_hold_bss(bss_from_pub(bss)); | |
427 | wdev->current_bss = bss_from_pub(bss); | |
428 | ||
fffd0934 JB |
429 | wdev->sme_state = CFG80211_SME_CONNECTED; |
430 | cfg80211_upload_connect_keys(wdev); | |
8b19e6ca LR |
431 | |
432 | country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY); | |
433 | ||
434 | if (!country_ie) | |
435 | return; | |
436 | ||
437 | /* | |
438 | * ieee80211_bss_get_ie() ensures we can access: | |
439 | * - country_ie + 2, the start of the country ie data, and | |
440 | * - and country_ie[1] which is the IE length | |
441 | */ | |
442 | regulatory_hint_11d(wdev->wiphy, | |
443 | country_ie + 2, | |
444 | country_ie[1]); | |
b23aa676 | 445 | } |
f2129354 JB |
446 | |
447 | void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, | |
448 | const u8 *req_ie, size_t req_ie_len, | |
449 | const u8 *resp_ie, size_t resp_ie_len, | |
450 | u16 status, gfp_t gfp) | |
451 | { | |
667503dd JB |
452 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
453 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
454 | struct cfg80211_event *ev; | |
455 | unsigned long flags; | |
456 | ||
457 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
458 | if (!ev) | |
459 | return; | |
460 | ||
461 | ev->type = EVENT_CONNECT_RESULT; | |
462 | memcpy(ev->cr.bssid, bssid, ETH_ALEN); | |
463 | ev->cr.req_ie = ((u8 *)ev) + sizeof(*ev); | |
464 | ev->cr.req_ie_len = req_ie_len; | |
465 | memcpy((void *)ev->cr.req_ie, req_ie, req_ie_len); | |
466 | ev->cr.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
467 | ev->cr.resp_ie_len = resp_ie_len; | |
468 | memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len); | |
469 | ev->cr.status = status; | |
470 | ||
471 | spin_lock_irqsave(&wdev->event_lock, flags); | |
472 | list_add_tail(&ev->list, &wdev->event_list); | |
473 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
474 | schedule_work(&rdev->event_work); | |
f2129354 | 475 | } |
b23aa676 SO |
476 | EXPORT_SYMBOL(cfg80211_connect_result); |
477 | ||
667503dd JB |
478 | void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid, |
479 | const u8 *req_ie, size_t req_ie_len, | |
480 | const u8 *resp_ie, size_t resp_ie_len) | |
b23aa676 | 481 | { |
b23aa676 SO |
482 | struct cfg80211_bss *bss; |
483 | #ifdef CONFIG_WIRELESS_EXT | |
484 | union iwreq_data wrqu; | |
485 | #endif | |
486 | ||
667503dd JB |
487 | ASSERT_WDEV_LOCK(wdev); |
488 | ||
b23aa676 SO |
489 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
490 | return; | |
491 | ||
492 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
493 | return; | |
494 | ||
495 | /* internal error -- how did we get to CONNECTED w/o BSS? */ | |
496 | if (WARN_ON(!wdev->current_bss)) { | |
497 | return; | |
498 | } | |
499 | ||
500 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 501 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
502 | wdev->current_bss = NULL; |
503 | ||
504 | bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, | |
505 | wdev->ssid, wdev->ssid_len, | |
506 | WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); | |
507 | ||
508 | if (WARN_ON(!bss)) | |
509 | return; | |
510 | ||
19957bb3 JB |
511 | cfg80211_hold_bss(bss_from_pub(bss)); |
512 | wdev->current_bss = bss_from_pub(bss); | |
b23aa676 | 513 | |
667503dd JB |
514 | nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), wdev->netdev, bssid, |
515 | req_ie, req_ie_len, resp_ie, resp_ie_len, | |
516 | GFP_KERNEL); | |
b23aa676 SO |
517 | |
518 | #ifdef CONFIG_WIRELESS_EXT | |
519 | if (req_ie) { | |
520 | memset(&wrqu, 0, sizeof(wrqu)); | |
521 | wrqu.data.length = req_ie_len; | |
3409ff77 | 522 | wireless_send_event(wdev->netdev, IWEVASSOCREQIE, |
667503dd | 523 | &wrqu, req_ie); |
b23aa676 SO |
524 | } |
525 | ||
526 | if (resp_ie) { | |
527 | memset(&wrqu, 0, sizeof(wrqu)); | |
528 | wrqu.data.length = resp_ie_len; | |
667503dd JB |
529 | wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, |
530 | &wrqu, resp_ie); | |
b23aa676 SO |
531 | } |
532 | ||
533 | memset(&wrqu, 0, sizeof(wrqu)); | |
534 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
535 | memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); | |
f401a6f7 JB |
536 | memcpy(wdev->wext.prev_bssid, bssid, ETH_ALEN); |
537 | wdev->wext.prev_bssid_valid = true; | |
667503dd | 538 | wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); |
b23aa676 SO |
539 | #endif |
540 | } | |
667503dd JB |
541 | |
542 | void cfg80211_roamed(struct net_device *dev, const u8 *bssid, | |
543 | const u8 *req_ie, size_t req_ie_len, | |
544 | const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) | |
545 | { | |
546 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
547 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
548 | struct cfg80211_event *ev; | |
549 | unsigned long flags; | |
550 | ||
551 | ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); | |
552 | if (!ev) | |
553 | return; | |
554 | ||
555 | ev->type = EVENT_ROAMED; | |
556 | memcpy(ev->rm.bssid, bssid, ETH_ALEN); | |
557 | ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev); | |
558 | ev->rm.req_ie_len = req_ie_len; | |
559 | memcpy((void *)ev->rm.req_ie, req_ie, req_ie_len); | |
560 | ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + req_ie_len; | |
561 | ev->rm.resp_ie_len = resp_ie_len; | |
562 | memcpy((void *)ev->rm.resp_ie, resp_ie, resp_ie_len); | |
563 | ||
564 | spin_lock_irqsave(&wdev->event_lock, flags); | |
565 | list_add_tail(&ev->list, &wdev->event_list); | |
566 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
567 | schedule_work(&rdev->event_work); | |
568 | } | |
b23aa676 SO |
569 | EXPORT_SYMBOL(cfg80211_roamed); |
570 | ||
667503dd | 571 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 | 572 | size_t ie_len, u16 reason, bool from_ap) |
b23aa676 SO |
573 | { |
574 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
fffd0934 JB |
575 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
576 | int i; | |
b23aa676 SO |
577 | #ifdef CONFIG_WIRELESS_EXT |
578 | union iwreq_data wrqu; | |
579 | #endif | |
580 | ||
667503dd JB |
581 | ASSERT_WDEV_LOCK(wdev); |
582 | ||
b23aa676 SO |
583 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) |
584 | return; | |
585 | ||
586 | if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) | |
587 | return; | |
588 | ||
589 | if (wdev->current_bss) { | |
590 | cfg80211_unhold_bss(wdev->current_bss); | |
19957bb3 | 591 | cfg80211_put_bss(&wdev->current_bss->pub); |
b23aa676 SO |
592 | } |
593 | ||
594 | wdev->current_bss = NULL; | |
595 | wdev->sme_state = CFG80211_SME_IDLE; | |
8dadadb7 | 596 | wdev->ssid_len = 0; |
b23aa676 | 597 | |
6829c878 | 598 | if (wdev->conn) { |
b6f0b639 JB |
599 | const u8 *bssid; |
600 | int ret; | |
601 | ||
6829c878 JB |
602 | kfree(wdev->conn->ie); |
603 | wdev->conn->ie = NULL; | |
19957bb3 JB |
604 | kfree(wdev->conn); |
605 | wdev->conn = NULL; | |
b6f0b639 JB |
606 | |
607 | /* | |
608 | * If this disconnect was due to a disassoc, we | |
609 | * we might still have an auth BSS around. For | |
610 | * the userspace SME that's currently expected, | |
611 | * but for the kernel SME (nl80211 CONNECT or | |
612 | * wireless extensions) we want to clear up all | |
613 | * state. | |
614 | */ | |
615 | for (i = 0; i < MAX_AUTH_BSSES; i++) { | |
616 | if (!wdev->auth_bsses[i]) | |
617 | continue; | |
618 | bssid = wdev->auth_bsses[i]->pub.bssid; | |
619 | ret = __cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, | |
620 | WLAN_REASON_DEAUTH_LEAVING); | |
621 | WARN(ret, "deauth failed: %d\n", ret); | |
622 | } | |
6829c878 JB |
623 | } |
624 | ||
fffd0934 JB |
625 | nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); |
626 | ||
627 | /* | |
628 | * Delete all the keys ... pairwise keys can't really | |
629 | * exist any more anyway, but default keys might. | |
630 | */ | |
631 | if (rdev->ops->del_key) | |
632 | for (i = 0; i < 6; i++) | |
633 | rdev->ops->del_key(wdev->wiphy, dev, i, NULL); | |
b23aa676 SO |
634 | |
635 | #ifdef CONFIG_WIRELESS_EXT | |
636 | memset(&wrqu, 0, sizeof(wrqu)); | |
637 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
638 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
639 | #endif | |
640 | } | |
641 | ||
642 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
643 | u8 *ie, size_t ie_len, gfp_t gfp) | |
644 | { | |
667503dd JB |
645 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
646 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
647 | struct cfg80211_event *ev; | |
648 | unsigned long flags; | |
649 | ||
650 | ev = kzalloc(sizeof(*ev) + ie_len, gfp); | |
651 | if (!ev) | |
652 | return; | |
653 | ||
654 | ev->type = EVENT_DISCONNECTED; | |
655 | ev->dc.ie = ((u8 *)ev) + sizeof(*ev); | |
656 | ev->dc.ie_len = ie_len; | |
657 | memcpy((void *)ev->dc.ie, ie, ie_len); | |
658 | ev->dc.reason = reason; | |
659 | ||
660 | spin_lock_irqsave(&wdev->event_lock, flags); | |
661 | list_add_tail(&ev->list, &wdev->event_list); | |
662 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
663 | schedule_work(&rdev->event_work); | |
b23aa676 SO |
664 | } |
665 | EXPORT_SYMBOL(cfg80211_disconnected); | |
666 | ||
667503dd JB |
667 | int __cfg80211_connect(struct cfg80211_registered_device *rdev, |
668 | struct net_device *dev, | |
fffd0934 | 669 | struct cfg80211_connect_params *connect, |
f401a6f7 JB |
670 | struct cfg80211_cached_keys *connkeys, |
671 | const u8 *prev_bssid) | |
b23aa676 | 672 | { |
b23aa676 | 673 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
59bbb6f7 | 674 | struct ieee80211_channel *chan; |
667503dd JB |
675 | int err; |
676 | ||
677 | ASSERT_WDEV_LOCK(wdev); | |
b23aa676 SO |
678 | |
679 | if (wdev->sme_state != CFG80211_SME_IDLE) | |
680 | return -EALREADY; | |
681 | ||
59bbb6f7 JB |
682 | chan = rdev_fixed_channel(rdev, wdev); |
683 | if (chan && chan != connect->channel) | |
684 | return -EBUSY; | |
685 | ||
fffd0934 JB |
686 | if (WARN_ON(wdev->connect_keys)) { |
687 | kfree(wdev->connect_keys); | |
688 | wdev->connect_keys = NULL; | |
689 | } | |
690 | ||
691 | if (connkeys && connkeys->def >= 0) { | |
692 | int idx; | |
bcba8eae | 693 | u32 cipher; |
fffd0934 JB |
694 | |
695 | idx = connkeys->def; | |
bcba8eae | 696 | cipher = connkeys->params[idx].cipher; |
fffd0934 | 697 | /* If given a WEP key we may need it for shared key auth */ |
bcba8eae SO |
698 | if (cipher == WLAN_CIPHER_SUITE_WEP40 || |
699 | cipher == WLAN_CIPHER_SUITE_WEP104) { | |
fffd0934 JB |
700 | connect->key_idx = idx; |
701 | connect->key = connkeys->params[idx].key; | |
702 | connect->key_len = connkeys->params[idx].key_len; | |
bcba8eae SO |
703 | |
704 | /* | |
705 | * If ciphers are not set (e.g. when going through | |
706 | * iwconfig), we have to set them appropriately here. | |
707 | */ | |
708 | if (connect->crypto.cipher_group == 0) | |
709 | connect->crypto.cipher_group = cipher; | |
710 | ||
711 | if (connect->crypto.n_ciphers_pairwise == 0) { | |
712 | connect->crypto.n_ciphers_pairwise = 1; | |
713 | connect->crypto.ciphers_pairwise[0] = cipher; | |
714 | } | |
fffd0934 JB |
715 | } |
716 | } | |
717 | ||
b23aa676 | 718 | if (!rdev->ops->connect) { |
6829c878 JB |
719 | if (!rdev->ops->auth || !rdev->ops->assoc) |
720 | return -EOPNOTSUPP; | |
721 | ||
19957bb3 JB |
722 | if (WARN_ON(wdev->conn)) |
723 | return -EINPROGRESS; | |
724 | ||
725 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
726 | if (!wdev->conn) | |
727 | return -ENOMEM; | |
6829c878 JB |
728 | |
729 | /* | |
730 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
731 | */ | |
732 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
733 | if (connect->bssid) { | |
734 | wdev->conn->params.bssid = wdev->conn->bssid; | |
735 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
736 | } | |
737 | ||
738 | if (connect->ie) { | |
739 | wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, | |
740 | GFP_KERNEL); | |
741 | wdev->conn->params.ie = wdev->conn->ie; | |
19957bb3 JB |
742 | if (!wdev->conn->ie) { |
743 | kfree(wdev->conn); | |
744 | wdev->conn = NULL; | |
6829c878 | 745 | return -ENOMEM; |
19957bb3 | 746 | } |
6829c878 JB |
747 | } |
748 | ||
749 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
750 | wdev->conn->auto_auth = true; | |
751 | /* start with open system ... should mostly work */ | |
752 | wdev->conn->params.auth_type = | |
753 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
754 | } else { | |
755 | wdev->conn->auto_auth = false; | |
756 | } | |
757 | ||
758 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
759 | wdev->ssid_len = connect->ssid_len; | |
760 | wdev->conn->params.ssid = wdev->ssid; | |
761 | wdev->conn->params.ssid_len = connect->ssid_len; | |
762 | ||
763 | /* don't care about result -- but fill bssid & channel */ | |
764 | if (!wdev->conn->params.bssid || !wdev->conn->params.channel) | |
765 | cfg80211_get_conn_bss(wdev); | |
766 | ||
767 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 768 | wdev->connect_keys = connkeys; |
6829c878 | 769 | |
f401a6f7 JB |
770 | if (prev_bssid) { |
771 | memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN); | |
772 | wdev->conn->prev_bssid_valid = true; | |
773 | } | |
774 | ||
6829c878 JB |
775 | /* we're good if we have both BSSID and channel */ |
776 | if (wdev->conn->params.bssid && wdev->conn->params.channel) { | |
777 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
778 | err = cfg80211_conn_do_work(wdev); | |
779 | } else { | |
780 | /* otherwise we'll need to scan for the AP first */ | |
781 | err = cfg80211_conn_scan(wdev); | |
782 | /* | |
783 | * If we can't scan right now, then we need to scan again | |
784 | * after the current scan finished, since the parameters | |
785 | * changed (unless we find a good AP anyway). | |
786 | */ | |
787 | if (err == -EBUSY) { | |
788 | err = 0; | |
789 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
790 | } | |
791 | } | |
19957bb3 JB |
792 | if (err) { |
793 | kfree(wdev->conn); | |
794 | wdev->conn = NULL; | |
6829c878 | 795 | wdev->sme_state = CFG80211_SME_IDLE; |
fffd0934 | 796 | wdev->connect_keys = NULL; |
8dadadb7 | 797 | wdev->ssid_len = 0; |
19957bb3 | 798 | } |
6829c878 JB |
799 | |
800 | return err; | |
b23aa676 SO |
801 | } else { |
802 | wdev->sme_state = CFG80211_SME_CONNECTING; | |
fffd0934 | 803 | wdev->connect_keys = connkeys; |
b23aa676 SO |
804 | err = rdev->ops->connect(&rdev->wiphy, dev, connect); |
805 | if (err) { | |
fffd0934 | 806 | wdev->connect_keys = NULL; |
b23aa676 SO |
807 | wdev->sme_state = CFG80211_SME_IDLE; |
808 | return err; | |
809 | } | |
b23aa676 | 810 | |
6829c878 JB |
811 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); |
812 | wdev->ssid_len = connect->ssid_len; | |
b23aa676 | 813 | |
6829c878 JB |
814 | return 0; |
815 | } | |
b23aa676 SO |
816 | } |
817 | ||
667503dd JB |
818 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
819 | struct net_device *dev, | |
fffd0934 JB |
820 | struct cfg80211_connect_params *connect, |
821 | struct cfg80211_cached_keys *connkeys) | |
667503dd JB |
822 | { |
823 | int err; | |
824 | ||
59bbb6f7 | 825 | mutex_lock(&rdev->devlist_mtx); |
667503dd | 826 | wdev_lock(dev->ieee80211_ptr); |
f401a6f7 | 827 | err = __cfg80211_connect(rdev, dev, connect, connkeys, NULL); |
667503dd | 828 | wdev_unlock(dev->ieee80211_ptr); |
59bbb6f7 | 829 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
830 | |
831 | return err; | |
832 | } | |
833 | ||
834 | int __cfg80211_disconnect(struct cfg80211_registered_device *rdev, | |
835 | struct net_device *dev, u16 reason, bool wextev) | |
b23aa676 | 836 | { |
6829c878 | 837 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
b23aa676 SO |
838 | int err; |
839 | ||
667503dd JB |
840 | ASSERT_WDEV_LOCK(wdev); |
841 | ||
6829c878 JB |
842 | if (wdev->sme_state == CFG80211_SME_IDLE) |
843 | return -EINVAL; | |
844 | ||
fffd0934 JB |
845 | kfree(wdev->connect_keys); |
846 | wdev->connect_keys = NULL; | |
847 | ||
b23aa676 | 848 | if (!rdev->ops->disconnect) { |
19957bb3 JB |
849 | if (!rdev->ops->deauth) |
850 | return -EOPNOTSUPP; | |
6829c878 | 851 | |
19957bb3 JB |
852 | /* was it connected by userspace SME? */ |
853 | if (!wdev->conn) { | |
854 | cfg80211_mlme_down(rdev, dev); | |
855 | return 0; | |
856 | } | |
6829c878 JB |
857 | |
858 | if (wdev->sme_state == CFG80211_SME_CONNECTING && | |
859 | (wdev->conn->state == CFG80211_CONN_SCANNING || | |
860 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { | |
861 | wdev->sme_state = CFG80211_SME_IDLE; | |
19957bb3 JB |
862 | kfree(wdev->conn); |
863 | wdev->conn = NULL; | |
8dadadb7 | 864 | wdev->ssid_len = 0; |
6829c878 JB |
865 | return 0; |
866 | } | |
867 | ||
6829c878 | 868 | /* wdev->conn->params.bssid must be set if > SCANNING */ |
667503dd JB |
869 | err = __cfg80211_mlme_deauth(rdev, dev, |
870 | wdev->conn->params.bssid, | |
871 | NULL, 0, reason); | |
6829c878 JB |
872 | if (err) |
873 | return err; | |
b23aa676 SO |
874 | } else { |
875 | err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); | |
876 | if (err) | |
877 | return err; | |
878 | } | |
879 | ||
6829c878 | 880 | if (wdev->sme_state == CFG80211_SME_CONNECTED) |
667503dd | 881 | __cfg80211_disconnected(dev, NULL, 0, 0, false); |
6829c878 | 882 | else if (wdev->sme_state == CFG80211_SME_CONNECTING) |
f2129354 JB |
883 | __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, |
884 | WLAN_STATUS_UNSPECIFIED_FAILURE, | |
df7fc0f9 | 885 | wextev, NULL); |
b23aa676 SO |
886 | |
887 | return 0; | |
888 | } | |
19957bb3 | 889 | |
667503dd JB |
890 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
891 | struct net_device *dev, | |
892 | u16 reason, bool wextev) | |
893 | { | |
894 | int err; | |
895 | ||
896 | wdev_lock(dev->ieee80211_ptr); | |
897 | err = __cfg80211_disconnect(rdev, dev, reason, wextev); | |
898 | wdev_unlock(dev->ieee80211_ptr); | |
899 | ||
900 | return err; | |
901 | } | |
902 | ||
19957bb3 JB |
903 | void cfg80211_sme_disassoc(struct net_device *dev, int idx) |
904 | { | |
905 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
906 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
907 | u8 bssid[ETH_ALEN]; | |
908 | ||
667503dd JB |
909 | ASSERT_WDEV_LOCK(wdev); |
910 | ||
19957bb3 JB |
911 | if (!wdev->conn) |
912 | return; | |
913 | ||
914 | if (wdev->conn->state == CFG80211_CONN_IDLE) | |
915 | return; | |
916 | ||
917 | /* | |
918 | * Ok, so the association was made by this SME -- we don't | |
919 | * want it any more so deauthenticate too. | |
920 | */ | |
921 | ||
922 | if (!wdev->auth_bsses[idx]) | |
923 | return; | |
924 | ||
925 | memcpy(bssid, wdev->auth_bsses[idx]->pub.bssid, ETH_ALEN); | |
ec3f1490 JB |
926 | if (__cfg80211_mlme_deauth(rdev, dev, bssid, |
927 | NULL, 0, WLAN_REASON_DEAUTH_LEAVING)) { | |
19957bb3 JB |
928 | /* whatever -- assume gone anyway */ |
929 | cfg80211_unhold_bss(wdev->auth_bsses[idx]); | |
930 | cfg80211_put_bss(&wdev->auth_bsses[idx]->pub); | |
931 | wdev->auth_bsses[idx] = NULL; | |
932 | } | |
933 | } |