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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
b23aa676 | 2 | /* |
ceca7b71 JB |
3 | * SME code for cfg80211 |
4 | * both driver SME event handling and the SME implementation | |
5 | * (for nl80211's connect() and wext) | |
b23aa676 SO |
6 | * |
7 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> | |
0e47901d | 8 | * Copyright (C) 2009, 2020 Intel Corporation. All rights reserved. |
29ce6ecb | 9 | * Copyright 2017 Intel Deutschland GmbH |
b23aa676 SO |
10 | */ |
11 | ||
12 | #include <linux/etherdevice.h> | |
13 | #include <linux/if_arp.h> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
b23aa676 | 15 | #include <linux/workqueue.h> |
a9a11622 | 16 | #include <linux/wireless.h> |
bc3b2d7f | 17 | #include <linux/export.h> |
a9a11622 | 18 | #include <net/iw_handler.h> |
b23aa676 SO |
19 | #include <net/cfg80211.h> |
20 | #include <net/rtnetlink.h> | |
21 | #include "nl80211.h" | |
8b19e6ca | 22 | #include "reg.h" |
e35e4d28 | 23 | #include "rdev-ops.h" |
b23aa676 | 24 | |
ceca7b71 JB |
25 | /* |
26 | * Software SME in cfg80211, using auth/assoc/deauth calls to the | |
27 | * driver. This is is for implementing nl80211's connect/disconnect | |
28 | * and wireless extensions (if configured.) | |
29 | */ | |
30 | ||
6829c878 JB |
31 | struct cfg80211_conn { |
32 | struct cfg80211_connect_params params; | |
33 | /* these are sub-states of the _CONNECTING sme_state */ | |
34 | enum { | |
6829c878 JB |
35 | CFG80211_CONN_SCANNING, |
36 | CFG80211_CONN_SCAN_AGAIN, | |
37 | CFG80211_CONN_AUTHENTICATE_NEXT, | |
38 | CFG80211_CONN_AUTHENTICATING, | |
3093ebbe | 39 | CFG80211_CONN_AUTH_FAILED_TIMEOUT, |
6829c878 JB |
40 | CFG80211_CONN_ASSOCIATE_NEXT, |
41 | CFG80211_CONN_ASSOCIATING, | |
923a0e7d | 42 | CFG80211_CONN_ASSOC_FAILED, |
3093ebbe | 43 | CFG80211_CONN_ASSOC_FAILED_TIMEOUT, |
ceca7b71 | 44 | CFG80211_CONN_DEAUTH, |
e6f462df | 45 | CFG80211_CONN_ABANDON, |
ceca7b71 | 46 | CFG80211_CONN_CONNECTED, |
6829c878 | 47 | } state; |
f401a6f7 | 48 | u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; |
46b9d180 | 49 | const u8 *ie; |
6829c878 | 50 | size_t ie_len; |
f401a6f7 | 51 | bool auto_auth, prev_bssid_valid; |
6829c878 JB |
52 | }; |
53 | ||
ceca7b71 | 54 | static void cfg80211_sme_free(struct wireless_dev *wdev) |
09d989d1 | 55 | { |
ceca7b71 JB |
56 | if (!wdev->conn) |
57 | return; | |
09d989d1 | 58 | |
ceca7b71 JB |
59 | kfree(wdev->conn->ie); |
60 | kfree(wdev->conn); | |
61 | wdev->conn = NULL; | |
09d989d1 LR |
62 | } |
63 | ||
6829c878 JB |
64 | static int cfg80211_conn_scan(struct wireless_dev *wdev) |
65 | { | |
f26cbf40 | 66 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 JB |
67 | struct cfg80211_scan_request *request; |
68 | int n_channels, err; | |
69 | ||
70 | ASSERT_RTNL(); | |
667503dd | 71 | ASSERT_WDEV_LOCK(wdev); |
6829c878 | 72 | |
f9d15d16 | 73 | if (rdev->scan_req || rdev->scan_msg) |
6829c878 JB |
74 | return -EBUSY; |
75 | ||
bdfbec2d | 76 | if (wdev->conn->params.channel) |
6829c878 | 77 | n_channels = 1; |
bdfbec2d IP |
78 | else |
79 | n_channels = ieee80211_get_num_supported_channels(wdev->wiphy); | |
6829c878 | 80 | |
6829c878 JB |
81 | request = kzalloc(sizeof(*request) + sizeof(request->ssids[0]) + |
82 | sizeof(request->channels[0]) * n_channels, | |
83 | GFP_KERNEL); | |
84 | if (!request) | |
85 | return -ENOMEM; | |
86 | ||
2a84ee86 | 87 | if (wdev->conn->params.channel) { |
57fbcce3 | 88 | enum nl80211_band band = wdev->conn->params.channel->band; |
2a84ee86 KB |
89 | struct ieee80211_supported_band *sband = |
90 | wdev->wiphy->bands[band]; | |
91 | ||
92 | if (!sband) { | |
93 | kfree(request); | |
94 | return -EINVAL; | |
95 | } | |
6829c878 | 96 | request->channels[0] = wdev->conn->params.channel; |
2a84ee86 KB |
97 | request->rates[band] = (1 << sband->n_bitrates) - 1; |
98 | } else { | |
6829c878 | 99 | int i = 0, j; |
57fbcce3 | 100 | enum nl80211_band band; |
e3081501 RM |
101 | struct ieee80211_supported_band *bands; |
102 | struct ieee80211_channel *channel; | |
6829c878 | 103 | |
57fbcce3 | 104 | for (band = 0; band < NUM_NL80211_BANDS; band++) { |
e3081501 RM |
105 | bands = wdev->wiphy->bands[band]; |
106 | if (!bands) | |
6829c878 | 107 | continue; |
e3081501 RM |
108 | for (j = 0; j < bands->n_channels; j++) { |
109 | channel = &bands->channels[j]; | |
110 | if (channel->flags & IEEE80211_CHAN_DISABLED) | |
111 | continue; | |
112 | request->channels[i++] = channel; | |
113 | } | |
114 | request->rates[band] = (1 << bands->n_bitrates) - 1; | |
6829c878 | 115 | } |
e3081501 | 116 | n_channels = i; |
6829c878 JB |
117 | } |
118 | request->n_channels = n_channels; | |
5ba63533 | 119 | request->ssids = (void *)&request->channels[n_channels]; |
6829c878 JB |
120 | request->n_ssids = 1; |
121 | ||
122 | memcpy(request->ssids[0].ssid, wdev->conn->params.ssid, | |
123 | wdev->conn->params.ssid_len); | |
124 | request->ssids[0].ssid_len = wdev->conn->params.ssid_len; | |
125 | ||
818965d3 JM |
126 | eth_broadcast_addr(request->bssid); |
127 | ||
fd014284 | 128 | request->wdev = wdev; |
79c97e97 | 129 | request->wiphy = &rdev->wiphy; |
15d6030b | 130 | request->scan_start = jiffies; |
6829c878 | 131 | |
79c97e97 | 132 | rdev->scan_req = request; |
6829c878 | 133 | |
e35e4d28 | 134 | err = rdev_scan(rdev, request); |
6829c878 JB |
135 | if (!err) { |
136 | wdev->conn->state = CFG80211_CONN_SCANNING; | |
fd014284 | 137 | nl80211_send_scan_start(rdev, wdev); |
463d0183 | 138 | dev_hold(wdev->netdev); |
6829c878 | 139 | } else { |
79c97e97 | 140 | rdev->scan_req = NULL; |
6829c878 JB |
141 | kfree(request); |
142 | } | |
143 | return err; | |
144 | } | |
145 | ||
3093ebbe PK |
146 | static int cfg80211_conn_do_work(struct wireless_dev *wdev, |
147 | enum nl80211_timeout_reason *treason) | |
6829c878 | 148 | { |
f26cbf40 | 149 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
19957bb3 | 150 | struct cfg80211_connect_params *params; |
f62fab73 | 151 | struct cfg80211_assoc_request req = {}; |
19957bb3 | 152 | int err; |
6829c878 | 153 | |
667503dd JB |
154 | ASSERT_WDEV_LOCK(wdev); |
155 | ||
6829c878 JB |
156 | if (!wdev->conn) |
157 | return 0; | |
158 | ||
19957bb3 JB |
159 | params = &wdev->conn->params; |
160 | ||
6829c878 | 161 | switch (wdev->conn->state) { |
ceca7b71 JB |
162 | case CFG80211_CONN_SCANNING: |
163 | /* didn't find it during scan ... */ | |
164 | return -ENOENT; | |
6829c878 JB |
165 | case CFG80211_CONN_SCAN_AGAIN: |
166 | return cfg80211_conn_scan(wdev); | |
167 | case CFG80211_CONN_AUTHENTICATE_NEXT: | |
2fd05115 JB |
168 | if (WARN_ON(!rdev->ops->auth)) |
169 | return -EOPNOTSUPP; | |
19957bb3 | 170 | wdev->conn->state = CFG80211_CONN_AUTHENTICATING; |
91bf9b26 JB |
171 | return cfg80211_mlme_auth(rdev, wdev->netdev, |
172 | params->channel, params->auth_type, | |
173 | params->bssid, | |
174 | params->ssid, params->ssid_len, | |
175 | NULL, 0, | |
176 | params->key, params->key_len, | |
177 | params->key_idx, NULL, 0); | |
3093ebbe PK |
178 | case CFG80211_CONN_AUTH_FAILED_TIMEOUT: |
179 | *treason = NL80211_TIMEOUT_AUTH; | |
923a0e7d | 180 | return -ENOTCONN; |
6829c878 | 181 | case CFG80211_CONN_ASSOCIATE_NEXT: |
2fd05115 JB |
182 | if (WARN_ON(!rdev->ops->assoc)) |
183 | return -EOPNOTSUPP; | |
19957bb3 | 184 | wdev->conn->state = CFG80211_CONN_ASSOCIATING; |
f401a6f7 | 185 | if (wdev->conn->prev_bssid_valid) |
f62fab73 JB |
186 | req.prev_bssid = wdev->conn->prev_bssid; |
187 | req.ie = params->ie; | |
188 | req.ie_len = params->ie_len; | |
189 | req.use_mfp = params->mfp != NL80211_MFP_NO; | |
190 | req.crypto = params->crypto; | |
191 | req.flags = params->flags; | |
192 | req.ht_capa = params->ht_capa; | |
193 | req.ht_capa_mask = params->ht_capa_mask; | |
194 | req.vht_capa = params->vht_capa; | |
195 | req.vht_capa_mask = params->vht_capa_mask; | |
196 | ||
91bf9b26 JB |
197 | err = cfg80211_mlme_assoc(rdev, wdev->netdev, params->channel, |
198 | params->bssid, params->ssid, | |
199 | params->ssid_len, &req); | |
19957bb3 | 200 | if (err) |
91bf9b26 JB |
201 | cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, |
202 | NULL, 0, | |
203 | WLAN_REASON_DEAUTH_LEAVING, | |
204 | false); | |
19957bb3 | 205 | return err; |
3093ebbe PK |
206 | case CFG80211_CONN_ASSOC_FAILED_TIMEOUT: |
207 | *treason = NL80211_TIMEOUT_ASSOC; | |
208 | /* fall through */ | |
923a0e7d JB |
209 | case CFG80211_CONN_ASSOC_FAILED: |
210 | cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, | |
211 | NULL, 0, | |
212 | WLAN_REASON_DEAUTH_LEAVING, false); | |
213 | return -ENOTCONN; | |
ceca7b71 | 214 | case CFG80211_CONN_DEAUTH: |
91bf9b26 JB |
215 | cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, |
216 | NULL, 0, | |
217 | WLAN_REASON_DEAUTH_LEAVING, false); | |
e6f462df JB |
218 | /* fall through */ |
219 | case CFG80211_CONN_ABANDON: | |
923a0e7d JB |
220 | /* free directly, disconnected event already sent */ |
221 | cfg80211_sme_free(wdev); | |
ceca7b71 | 222 | return 0; |
6829c878 JB |
223 | default: |
224 | return 0; | |
225 | } | |
226 | } | |
227 | ||
228 | void cfg80211_conn_work(struct work_struct *work) | |
229 | { | |
79c97e97 | 230 | struct cfg80211_registered_device *rdev = |
6829c878 JB |
231 | container_of(work, struct cfg80211_registered_device, conn_work); |
232 | struct wireless_dev *wdev; | |
7400f42e | 233 | u8 bssid_buf[ETH_ALEN], *bssid = NULL; |
3093ebbe | 234 | enum nl80211_timeout_reason treason; |
6829c878 JB |
235 | |
236 | rtnl_lock(); | |
6829c878 | 237 | |
53873f13 | 238 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
c8157976 JB |
239 | if (!wdev->netdev) |
240 | continue; | |
241 | ||
667503dd JB |
242 | wdev_lock(wdev); |
243 | if (!netif_running(wdev->netdev)) { | |
244 | wdev_unlock(wdev); | |
6829c878 | 245 | continue; |
667503dd | 246 | } |
ceca7b71 JB |
247 | if (!wdev->conn || |
248 | wdev->conn->state == CFG80211_CONN_CONNECTED) { | |
667503dd | 249 | wdev_unlock(wdev); |
6829c878 | 250 | continue; |
667503dd | 251 | } |
7400f42e JB |
252 | if (wdev->conn->params.bssid) { |
253 | memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN); | |
254 | bssid = bssid_buf; | |
255 | } | |
3093ebbe PK |
256 | treason = NL80211_TIMEOUT_UNSPECIFIED; |
257 | if (cfg80211_conn_do_work(wdev, &treason)) { | |
5349a0f7 VK |
258 | struct cfg80211_connect_resp_params cr; |
259 | ||
260 | memset(&cr, 0, sizeof(cr)); | |
261 | cr.status = -1; | |
262 | cr.bssid = bssid; | |
263 | cr.timeout_reason = treason; | |
264 | __cfg80211_connect_result(wdev->netdev, &cr, false); | |
ceca7b71 | 265 | } |
667503dd | 266 | wdev_unlock(wdev); |
6829c878 JB |
267 | } |
268 | ||
6829c878 JB |
269 | rtnl_unlock(); |
270 | } | |
271 | ||
0e3a39b5 | 272 | /* Returned bss is reference counted and must be cleaned up appropriately. */ |
bbac31f4 | 273 | static struct cfg80211_bss *cfg80211_get_conn_bss(struct wireless_dev *wdev) |
6829c878 | 274 | { |
f26cbf40 | 275 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
6829c878 | 276 | struct cfg80211_bss *bss; |
6829c878 | 277 | |
667503dd JB |
278 | ASSERT_WDEV_LOCK(wdev); |
279 | ||
ed9d0102 JM |
280 | bss = cfg80211_get_bss(wdev->wiphy, wdev->conn->params.channel, |
281 | wdev->conn->params.bssid, | |
6829c878 JB |
282 | wdev->conn->params.ssid, |
283 | wdev->conn->params.ssid_len, | |
34d50519 | 284 | wdev->conn_bss_type, |
6eb18137 | 285 | IEEE80211_PRIVACY(wdev->conn->params.privacy)); |
6829c878 | 286 | if (!bss) |
bbac31f4 | 287 | return NULL; |
6829c878 JB |
288 | |
289 | memcpy(wdev->conn->bssid, bss->bssid, ETH_ALEN); | |
290 | wdev->conn->params.bssid = wdev->conn->bssid; | |
291 | wdev->conn->params.channel = bss->channel; | |
292 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
79c97e97 | 293 | schedule_work(&rdev->conn_work); |
6829c878 | 294 | |
bbac31f4 | 295 | return bss; |
6829c878 JB |
296 | } |
297 | ||
667503dd | 298 | static void __cfg80211_sme_scan_done(struct net_device *dev) |
6829c878 JB |
299 | { |
300 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 301 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
bbac31f4 | 302 | struct cfg80211_bss *bss; |
6829c878 | 303 | |
667503dd JB |
304 | ASSERT_WDEV_LOCK(wdev); |
305 | ||
d4b1a687 | 306 | if (!wdev->conn) |
6829c878 JB |
307 | return; |
308 | ||
309 | if (wdev->conn->state != CFG80211_CONN_SCANNING && | |
310 | wdev->conn->state != CFG80211_CONN_SCAN_AGAIN) | |
311 | return; | |
312 | ||
bbac31f4 | 313 | bss = cfg80211_get_conn_bss(wdev); |
ceca7b71 | 314 | if (bss) |
5b112d3d | 315 | cfg80211_put_bss(&rdev->wiphy, bss); |
ceca7b71 JB |
316 | else |
317 | schedule_work(&rdev->conn_work); | |
6829c878 JB |
318 | } |
319 | ||
667503dd JB |
320 | void cfg80211_sme_scan_done(struct net_device *dev) |
321 | { | |
322 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
323 | ||
324 | wdev_lock(wdev); | |
325 | __cfg80211_sme_scan_done(dev); | |
326 | wdev_unlock(wdev); | |
327 | } | |
328 | ||
ceca7b71 | 329 | void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len) |
6829c878 | 330 | { |
6829c878 | 331 | struct wiphy *wiphy = wdev->wiphy; |
f26cbf40 | 332 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
6829c878 JB |
333 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; |
334 | u16 status_code = le16_to_cpu(mgmt->u.auth.status_code); | |
335 | ||
667503dd JB |
336 | ASSERT_WDEV_LOCK(wdev); |
337 | ||
ceca7b71 | 338 | if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED) |
6829c878 JB |
339 | return; |
340 | ||
341 | if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && | |
342 | wdev->conn->auto_auth && | |
343 | wdev->conn->params.auth_type != NL80211_AUTHTYPE_NETWORK_EAP) { | |
344 | /* select automatically between only open, shared, leap */ | |
345 | switch (wdev->conn->params.auth_type) { | |
346 | case NL80211_AUTHTYPE_OPEN_SYSTEM: | |
fffd0934 JB |
347 | if (wdev->connect_keys) |
348 | wdev->conn->params.auth_type = | |
349 | NL80211_AUTHTYPE_SHARED_KEY; | |
350 | else | |
351 | wdev->conn->params.auth_type = | |
352 | NL80211_AUTHTYPE_NETWORK_EAP; | |
6829c878 JB |
353 | break; |
354 | case NL80211_AUTHTYPE_SHARED_KEY: | |
355 | wdev->conn->params.auth_type = | |
356 | NL80211_AUTHTYPE_NETWORK_EAP; | |
357 | break; | |
358 | default: | |
359 | /* huh? */ | |
360 | wdev->conn->params.auth_type = | |
361 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
362 | break; | |
363 | } | |
364 | wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; | |
365 | schedule_work(&rdev->conn_work); | |
19957bb3 | 366 | } else if (status_code != WLAN_STATUS_SUCCESS) { |
5349a0f7 VK |
367 | struct cfg80211_connect_resp_params cr; |
368 | ||
369 | memset(&cr, 0, sizeof(cr)); | |
370 | cr.status = status_code; | |
371 | cr.bssid = mgmt->bssid; | |
372 | cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED; | |
373 | __cfg80211_connect_result(wdev->netdev, &cr, false); | |
ceca7b71 | 374 | } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { |
6829c878 JB |
375 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; |
376 | schedule_work(&rdev->conn_work); | |
377 | } | |
378 | } | |
b23aa676 | 379 | |
ceca7b71 | 380 | bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status) |
f401a6f7 | 381 | { |
f26cbf40 | 382 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
f401a6f7 | 383 | |
ceca7b71 | 384 | if (!wdev->conn) |
f401a6f7 JB |
385 | return false; |
386 | ||
ceca7b71 JB |
387 | if (status == WLAN_STATUS_SUCCESS) { |
388 | wdev->conn->state = CFG80211_CONN_CONNECTED; | |
f401a6f7 | 389 | return false; |
ceca7b71 | 390 | } |
f401a6f7 | 391 | |
ceca7b71 JB |
392 | if (wdev->conn->prev_bssid_valid) { |
393 | /* | |
394 | * Some stupid APs don't accept reassoc, so we | |
395 | * need to fall back to trying regular assoc; | |
396 | * return true so no event is sent to userspace. | |
397 | */ | |
398 | wdev->conn->prev_bssid_valid = false; | |
399 | wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; | |
400 | schedule_work(&rdev->conn_work); | |
401 | return true; | |
402 | } | |
403 | ||
923a0e7d | 404 | wdev->conn->state = CFG80211_CONN_ASSOC_FAILED; |
f401a6f7 | 405 | schedule_work(&rdev->conn_work); |
ceca7b71 JB |
406 | return false; |
407 | } | |
f401a6f7 | 408 | |
ceca7b71 JB |
409 | void cfg80211_sme_deauth(struct wireless_dev *wdev) |
410 | { | |
411 | cfg80211_sme_free(wdev); | |
f401a6f7 JB |
412 | } |
413 | ||
ceca7b71 | 414 | void cfg80211_sme_auth_timeout(struct wireless_dev *wdev) |
7d930bc3 | 415 | { |
f26cbf40 | 416 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
923a0e7d JB |
417 | |
418 | if (!wdev->conn) | |
419 | return; | |
420 | ||
3093ebbe | 421 | wdev->conn->state = CFG80211_CONN_AUTH_FAILED_TIMEOUT; |
923a0e7d | 422 | schedule_work(&rdev->conn_work); |
ceca7b71 | 423 | } |
7d930bc3 | 424 | |
ceca7b71 JB |
425 | void cfg80211_sme_disassoc(struct wireless_dev *wdev) |
426 | { | |
f26cbf40 | 427 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
ceca7b71 JB |
428 | |
429 | if (!wdev->conn) | |
430 | return; | |
431 | ||
432 | wdev->conn->state = CFG80211_CONN_DEAUTH; | |
7d930bc3 JB |
433 | schedule_work(&rdev->conn_work); |
434 | } | |
435 | ||
ceca7b71 JB |
436 | void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev) |
437 | { | |
f26cbf40 | 438 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
923a0e7d JB |
439 | |
440 | if (!wdev->conn) | |
441 | return; | |
442 | ||
3093ebbe | 443 | wdev->conn->state = CFG80211_CONN_ASSOC_FAILED_TIMEOUT; |
923a0e7d | 444 | schedule_work(&rdev->conn_work); |
ceca7b71 JB |
445 | } |
446 | ||
e6f462df JB |
447 | void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev) |
448 | { | |
449 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); | |
450 | ||
451 | if (!wdev->conn) | |
452 | return; | |
453 | ||
454 | wdev->conn->state = CFG80211_CONN_ABANDON; | |
455 | schedule_work(&rdev->conn_work); | |
456 | } | |
457 | ||
46b9d180 JB |
458 | static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev, |
459 | const u8 *ies, size_t ies_len, | |
460 | const u8 **out_ies, size_t *out_ies_len) | |
461 | { | |
462 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); | |
463 | u8 *buf; | |
464 | size_t offs; | |
465 | ||
466 | if (!rdev->wiphy.extended_capabilities_len || | |
467 | (ies && cfg80211_find_ie(WLAN_EID_EXT_CAPABILITY, ies, ies_len))) { | |
468 | *out_ies = kmemdup(ies, ies_len, GFP_KERNEL); | |
469 | if (!*out_ies) | |
470 | return -ENOMEM; | |
471 | *out_ies_len = ies_len; | |
472 | return 0; | |
473 | } | |
474 | ||
475 | buf = kmalloc(ies_len + rdev->wiphy.extended_capabilities_len + 2, | |
476 | GFP_KERNEL); | |
477 | if (!buf) | |
478 | return -ENOMEM; | |
479 | ||
480 | if (ies_len) { | |
481 | static const u8 before_extcapa[] = { | |
482 | /* not listing IEs expected to be created by driver */ | |
483 | WLAN_EID_RSN, | |
484 | WLAN_EID_QOS_CAPA, | |
485 | WLAN_EID_RRM_ENABLED_CAPABILITIES, | |
486 | WLAN_EID_MOBILITY_DOMAIN, | |
487 | WLAN_EID_SUPPORTED_REGULATORY_CLASSES, | |
488 | WLAN_EID_BSS_COEX_2040, | |
489 | }; | |
490 | ||
491 | offs = ieee80211_ie_split(ies, ies_len, before_extcapa, | |
492 | ARRAY_SIZE(before_extcapa), 0); | |
493 | memcpy(buf, ies, offs); | |
494 | /* leave a whole for extended capabilities IE */ | |
495 | memcpy(buf + offs + rdev->wiphy.extended_capabilities_len + 2, | |
496 | ies + offs, ies_len - offs); | |
497 | } else { | |
498 | offs = 0; | |
499 | } | |
500 | ||
501 | /* place extended capabilities IE (with only driver capabilities) */ | |
502 | buf[offs] = WLAN_EID_EXT_CAPABILITY; | |
503 | buf[offs + 1] = rdev->wiphy.extended_capabilities_len; | |
504 | memcpy(buf + offs + 2, | |
505 | rdev->wiphy.extended_capabilities, | |
506 | rdev->wiphy.extended_capabilities_len); | |
507 | ||
508 | *out_ies = buf; | |
509 | *out_ies_len = ies_len + rdev->wiphy.extended_capabilities_len + 2; | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
ceca7b71 JB |
514 | static int cfg80211_sme_connect(struct wireless_dev *wdev, |
515 | struct cfg80211_connect_params *connect, | |
516 | const u8 *prev_bssid) | |
517 | { | |
f26cbf40 | 518 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
ceca7b71 JB |
519 | struct cfg80211_bss *bss; |
520 | int err; | |
521 | ||
522 | if (!rdev->ops->auth || !rdev->ops->assoc) | |
523 | return -EOPNOTSUPP; | |
524 | ||
4ce2bd9c | 525 | if (wdev->current_bss) { |
4ce2bd9c JM |
526 | cfg80211_unhold_bss(wdev->current_bss); |
527 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); | |
528 | wdev->current_bss = NULL; | |
529 | ||
530 | cfg80211_sme_free(wdev); | |
531 | } | |
ceca7b71 JB |
532 | |
533 | if (WARN_ON(wdev->conn)) | |
534 | return -EINPROGRESS; | |
535 | ||
536 | wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); | |
537 | if (!wdev->conn) | |
538 | return -ENOMEM; | |
539 | ||
540 | /* | |
541 | * Copy all parameters, and treat explicitly IEs, BSSID, SSID. | |
542 | */ | |
543 | memcpy(&wdev->conn->params, connect, sizeof(*connect)); | |
544 | if (connect->bssid) { | |
545 | wdev->conn->params.bssid = wdev->conn->bssid; | |
546 | memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); | |
547 | } | |
548 | ||
46b9d180 JB |
549 | if (cfg80211_sme_get_conn_ies(wdev, connect->ie, connect->ie_len, |
550 | &wdev->conn->ie, | |
551 | &wdev->conn->params.ie_len)) { | |
552 | kfree(wdev->conn); | |
553 | wdev->conn = NULL; | |
554 | return -ENOMEM; | |
ceca7b71 | 555 | } |
46b9d180 | 556 | wdev->conn->params.ie = wdev->conn->ie; |
ceca7b71 JB |
557 | |
558 | if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { | |
559 | wdev->conn->auto_auth = true; | |
560 | /* start with open system ... should mostly work */ | |
561 | wdev->conn->params.auth_type = | |
562 | NL80211_AUTHTYPE_OPEN_SYSTEM; | |
563 | } else { | |
564 | wdev->conn->auto_auth = false; | |
565 | } | |
566 | ||
567 | wdev->conn->params.ssid = wdev->ssid; | |
babd3a27 | 568 | wdev->conn->params.ssid_len = wdev->ssid_len; |
ceca7b71 JB |
569 | |
570 | /* see if we have the bss already */ | |
571 | bss = cfg80211_get_conn_bss(wdev); | |
572 | ||
573 | if (prev_bssid) { | |
574 | memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN); | |
575 | wdev->conn->prev_bssid_valid = true; | |
576 | } | |
577 | ||
578 | /* we're good if we have a matching bss struct */ | |
579 | if (bss) { | |
3093ebbe PK |
580 | enum nl80211_timeout_reason treason; |
581 | ||
582 | err = cfg80211_conn_do_work(wdev, &treason); | |
ceca7b71 JB |
583 | cfg80211_put_bss(wdev->wiphy, bss); |
584 | } else { | |
585 | /* otherwise we'll need to scan for the AP first */ | |
586 | err = cfg80211_conn_scan(wdev); | |
587 | ||
588 | /* | |
589 | * If we can't scan right now, then we need to scan again | |
590 | * after the current scan finished, since the parameters | |
591 | * changed (unless we find a good AP anyway). | |
592 | */ | |
593 | if (err == -EBUSY) { | |
594 | err = 0; | |
595 | wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; | |
596 | } | |
597 | } | |
598 | ||
599 | if (err) | |
600 | cfg80211_sme_free(wdev); | |
601 | ||
602 | return err; | |
603 | } | |
604 | ||
605 | static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason) | |
606 | { | |
f26cbf40 | 607 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
ceca7b71 JB |
608 | int err; |
609 | ||
610 | if (!wdev->conn) | |
611 | return 0; | |
612 | ||
613 | if (!rdev->ops->deauth) | |
614 | return -EOPNOTSUPP; | |
615 | ||
616 | if (wdev->conn->state == CFG80211_CONN_SCANNING || | |
617 | wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) { | |
618 | err = 0; | |
619 | goto out; | |
620 | } | |
621 | ||
622 | /* wdev->conn->params.bssid must be set if > SCANNING */ | |
623 | err = cfg80211_mlme_deauth(rdev, wdev->netdev, | |
624 | wdev->conn->params.bssid, | |
625 | NULL, 0, reason, false); | |
626 | out: | |
627 | cfg80211_sme_free(wdev); | |
628 | return err; | |
629 | } | |
630 | ||
631 | /* | |
632 | * code shared for in-device and software SME | |
633 | */ | |
634 | ||
635 | static bool cfg80211_is_all_idle(void) | |
636 | { | |
637 | struct cfg80211_registered_device *rdev; | |
638 | struct wireless_dev *wdev; | |
639 | bool is_all_idle = true; | |
640 | ||
641 | /* | |
642 | * All devices must be idle as otherwise if you are actively | |
643 | * scanning some new beacon hints could be learned and would | |
644 | * count as new regulatory hints. | |
113f3aaa S |
645 | * Also if there is any other active beaconing interface we |
646 | * need not issue a disconnect hint and reset any info such | |
647 | * as chan dfs state, etc. | |
ceca7b71 JB |
648 | */ |
649 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { | |
53873f13 | 650 | list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { |
ceca7b71 | 651 | wdev_lock(wdev); |
113f3aaa S |
652 | if (wdev->conn || wdev->current_bss || |
653 | cfg80211_beaconing_iface_active(wdev)) | |
ceca7b71 JB |
654 | is_all_idle = false; |
655 | wdev_unlock(wdev); | |
656 | } | |
657 | } | |
658 | ||
659 | return is_all_idle; | |
660 | } | |
661 | ||
662 | static void disconnect_work(struct work_struct *work) | |
663 | { | |
664 | rtnl_lock(); | |
665 | if (cfg80211_is_all_idle()) | |
666 | regulatory_hint_disconnect(); | |
667 | rtnl_unlock(); | |
668 | } | |
669 | ||
e005bd7d | 670 | DECLARE_WORK(cfg80211_disconnect_work, disconnect_work); |
ceca7b71 JB |
671 | |
672 | ||
673 | /* | |
674 | * API calls for drivers implementing connect/disconnect and | |
675 | * SME event handling | |
676 | */ | |
677 | ||
6f390908 | 678 | /* This method must consume bss one way or another */ |
5349a0f7 VK |
679 | void __cfg80211_connect_result(struct net_device *dev, |
680 | struct cfg80211_connect_resp_params *cr, | |
681 | bool wextev) | |
b23aa676 SO |
682 | { |
683 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
9caf0364 | 684 | const u8 *country_ie; |
3d23e349 | 685 | #ifdef CONFIG_CFG80211_WEXT |
b23aa676 SO |
686 | union iwreq_data wrqu; |
687 | #endif | |
688 | ||
667503dd JB |
689 | ASSERT_WDEV_LOCK(wdev); |
690 | ||
074ac8df | 691 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && |
6f390908 | 692 | wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) { |
5349a0f7 | 693 | cfg80211_put_bss(wdev->wiphy, cr->bss); |
b23aa676 | 694 | return; |
6f390908 | 695 | } |
b23aa676 | 696 | |
4d797fce | 697 | wdev->unprot_beacon_reported = 0; |
5349a0f7 VK |
698 | nl80211_send_connect_result(wiphy_to_rdev(wdev->wiphy), dev, cr, |
699 | GFP_KERNEL); | |
e45cd82a | 700 | |
3d23e349 | 701 | #ifdef CONFIG_CFG80211_WEXT |
e45cd82a | 702 | if (wextev) { |
5349a0f7 | 703 | if (cr->req_ie && cr->status == WLAN_STATUS_SUCCESS) { |
e45cd82a | 704 | memset(&wrqu, 0, sizeof(wrqu)); |
5349a0f7 VK |
705 | wrqu.data.length = cr->req_ie_len; |
706 | wireless_send_event(dev, IWEVASSOCREQIE, &wrqu, | |
707 | cr->req_ie); | |
e45cd82a JB |
708 | } |
709 | ||
5349a0f7 | 710 | if (cr->resp_ie && cr->status == WLAN_STATUS_SUCCESS) { |
e45cd82a | 711 | memset(&wrqu, 0, sizeof(wrqu)); |
5349a0f7 VK |
712 | wrqu.data.length = cr->resp_ie_len; |
713 | wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, | |
714 | cr->resp_ie); | |
e45cd82a JB |
715 | } |
716 | ||
717 | memset(&wrqu, 0, sizeof(wrqu)); | |
718 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
5349a0f7 VK |
719 | if (cr->bssid && cr->status == WLAN_STATUS_SUCCESS) { |
720 | memcpy(wrqu.ap_addr.sa_data, cr->bssid, ETH_ALEN); | |
721 | memcpy(wdev->wext.prev_bssid, cr->bssid, ETH_ALEN); | |
f401a6f7 JB |
722 | wdev->wext.prev_bssid_valid = true; |
723 | } | |
e45cd82a JB |
724 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); |
725 | } | |
726 | #endif | |
727 | ||
5349a0f7 | 728 | if (!cr->bss && (cr->status == WLAN_STATUS_SUCCESS)) { |
f26cbf40 | 729 | WARN_ON_ONCE(!wiphy_to_rdev(wdev->wiphy)->ops->connect); |
5349a0f7 VK |
730 | cr->bss = cfg80211_get_bss(wdev->wiphy, NULL, cr->bssid, |
731 | wdev->ssid, wdev->ssid_len, | |
732 | wdev->conn_bss_type, | |
733 | IEEE80211_PRIVACY_ANY); | |
734 | if (cr->bss) | |
735 | cfg80211_hold_bss(bss_from_pub(cr->bss)); | |
4c4d684a UR |
736 | } |
737 | ||
df7fc0f9 JB |
738 | if (wdev->current_bss) { |
739 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 740 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
df7fc0f9 JB |
741 | wdev->current_bss = NULL; |
742 | } | |
743 | ||
5349a0f7 | 744 | if (cr->status != WLAN_STATUS_SUCCESS) { |
b47f610b | 745 | kzfree(wdev->connect_keys); |
fffd0934 | 746 | wdev->connect_keys = NULL; |
8dadadb7 | 747 | wdev->ssid_len = 0; |
bd2522b1 | 748 | wdev->conn_owner_nlportid = 0; |
5349a0f7 VK |
749 | if (cr->bss) { |
750 | cfg80211_unhold_bss(bss_from_pub(cr->bss)); | |
751 | cfg80211_put_bss(wdev->wiphy, cr->bss); | |
f1940c57 | 752 | } |
c1fbb258 | 753 | cfg80211_sme_free(wdev); |
fffd0934 | 754 | return; |
b23aa676 | 755 | } |
fffd0934 | 756 | |
5349a0f7 | 757 | if (WARN_ON(!cr->bss)) |
4c4d684a | 758 | return; |
fffd0934 | 759 | |
5349a0f7 | 760 | wdev->current_bss = bss_from_pub(cr->bss); |
fffd0934 | 761 | |
b8676221 DS |
762 | if (!(wdev->wiphy->flags & WIPHY_FLAG_HAS_STATIC_WEP)) |
763 | cfg80211_upload_connect_keys(wdev); | |
8b19e6ca | 764 | |
9caf0364 | 765 | rcu_read_lock(); |
5349a0f7 | 766 | country_ie = ieee80211_bss_get_ie(cr->bss, WLAN_EID_COUNTRY); |
9caf0364 JB |
767 | if (!country_ie) { |
768 | rcu_read_unlock(); | |
769 | return; | |
770 | } | |
771 | ||
772 | country_ie = kmemdup(country_ie, 2 + country_ie[1], GFP_ATOMIC); | |
773 | rcu_read_unlock(); | |
8b19e6ca LR |
774 | |
775 | if (!country_ie) | |
776 | return; | |
777 | ||
778 | /* | |
779 | * ieee80211_bss_get_ie() ensures we can access: | |
780 | * - country_ie + 2, the start of the country ie data, and | |
781 | * - and country_ie[1] which is the IE length | |
782 | */ | |
5349a0f7 | 783 | regulatory_hint_country_ie(wdev->wiphy, cr->bss->channel->band, |
789fd033 | 784 | country_ie + 2, country_ie[1]); |
9caf0364 | 785 | kfree(country_ie); |
b23aa676 | 786 | } |
f2129354 | 787 | |
e7054989 | 788 | /* Consumes bss object one way or another */ |
5349a0f7 VK |
789 | void cfg80211_connect_done(struct net_device *dev, |
790 | struct cfg80211_connect_resp_params *params, | |
791 | gfp_t gfp) | |
f2129354 | 792 | { |
667503dd | 793 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
f26cbf40 | 794 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
667503dd JB |
795 | struct cfg80211_event *ev; |
796 | unsigned long flags; | |
5349a0f7 | 797 | u8 *next; |
667503dd | 798 | |
5349a0f7 | 799 | if (params->bss) { |
5349a0f7 | 800 | struct cfg80211_internal_bss *ibss = bss_from_pub(params->bss); |
e7054989 | 801 | |
a3ce17d1 CT |
802 | if (list_empty(&ibss->list)) { |
803 | struct cfg80211_bss *found = NULL, *tmp = params->bss; | |
804 | ||
805 | found = cfg80211_get_bss(wdev->wiphy, NULL, | |
806 | params->bss->bssid, | |
807 | wdev->ssid, wdev->ssid_len, | |
808 | wdev->conn_bss_type, | |
809 | IEEE80211_PRIVACY_ANY); | |
810 | if (found) { | |
811 | /* The same BSS is already updated so use it | |
812 | * instead, as it has latest info. | |
813 | */ | |
814 | params->bss = found; | |
815 | } else { | |
816 | /* Update with BSS provided by driver, it will | |
817 | * be freshly added and ref cnted, we can free | |
818 | * the old one. | |
819 | * | |
820 | * signal_valid can be false, as we are not | |
821 | * expecting the BSS to be found. | |
822 | * | |
823 | * keep the old timestamp to avoid confusion | |
824 | */ | |
825 | cfg80211_bss_update(rdev, ibss, false, | |
826 | ibss->ts); | |
827 | } | |
828 | ||
829 | cfg80211_put_bss(wdev->wiphy, tmp); | |
e7054989 KV |
830 | } |
831 | } | |
832 | ||
5349a0f7 | 833 | ev = kzalloc(sizeof(*ev) + (params->bssid ? ETH_ALEN : 0) + |
a3caf744 | 834 | params->req_ie_len + params->resp_ie_len + |
76804d28 AVS |
835 | params->fils.kek_len + params->fils.pmk_len + |
836 | (params->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); | |
e7054989 | 837 | if (!ev) { |
5349a0f7 | 838 | cfg80211_put_bss(wdev->wiphy, params->bss); |
667503dd | 839 | return; |
e7054989 | 840 | } |
667503dd JB |
841 | |
842 | ev->type = EVENT_CONNECT_RESULT; | |
5349a0f7 VK |
843 | next = ((u8 *)ev) + sizeof(*ev); |
844 | if (params->bssid) { | |
845 | ev->cr.bssid = next; | |
846 | memcpy((void *)ev->cr.bssid, params->bssid, ETH_ALEN); | |
847 | next += ETH_ALEN; | |
7834704b | 848 | } |
5349a0f7 VK |
849 | if (params->req_ie_len) { |
850 | ev->cr.req_ie = next; | |
851 | ev->cr.req_ie_len = params->req_ie_len; | |
852 | memcpy((void *)ev->cr.req_ie, params->req_ie, | |
853 | params->req_ie_len); | |
854 | next += params->req_ie_len; | |
7834704b | 855 | } |
5349a0f7 VK |
856 | if (params->resp_ie_len) { |
857 | ev->cr.resp_ie = next; | |
858 | ev->cr.resp_ie_len = params->resp_ie_len; | |
859 | memcpy((void *)ev->cr.resp_ie, params->resp_ie, | |
860 | params->resp_ie_len); | |
861 | next += params->resp_ie_len; | |
862 | } | |
76804d28 AVS |
863 | if (params->fils.kek_len) { |
864 | ev->cr.fils.kek = next; | |
865 | ev->cr.fils.kek_len = params->fils.kek_len; | |
866 | memcpy((void *)ev->cr.fils.kek, params->fils.kek, | |
867 | params->fils.kek_len); | |
868 | next += params->fils.kek_len; | |
a3caf744 | 869 | } |
76804d28 AVS |
870 | if (params->fils.pmk_len) { |
871 | ev->cr.fils.pmk = next; | |
872 | ev->cr.fils.pmk_len = params->fils.pmk_len; | |
873 | memcpy((void *)ev->cr.fils.pmk, params->fils.pmk, | |
874 | params->fils.pmk_len); | |
875 | next += params->fils.pmk_len; | |
a3caf744 | 876 | } |
76804d28 AVS |
877 | if (params->fils.pmkid) { |
878 | ev->cr.fils.pmkid = next; | |
879 | memcpy((void *)ev->cr.fils.pmkid, params->fils.pmkid, | |
880 | WLAN_PMKID_LEN); | |
a3caf744 VK |
881 | next += WLAN_PMKID_LEN; |
882 | } | |
76804d28 AVS |
883 | ev->cr.fils.update_erp_next_seq_num = params->fils.update_erp_next_seq_num; |
884 | if (params->fils.update_erp_next_seq_num) | |
885 | ev->cr.fils.erp_next_seq_num = params->fils.erp_next_seq_num; | |
5349a0f7 VK |
886 | if (params->bss) |
887 | cfg80211_hold_bss(bss_from_pub(params->bss)); | |
888 | ev->cr.bss = params->bss; | |
889 | ev->cr.status = params->status; | |
890 | ev->cr.timeout_reason = params->timeout_reason; | |
667503dd JB |
891 | |
892 | spin_lock_irqsave(&wdev->event_lock, flags); | |
893 | list_add_tail(&ev->list, &wdev->event_list); | |
894 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 895 | queue_work(cfg80211_wq, &rdev->event_work); |
f2129354 | 896 | } |
5349a0f7 | 897 | EXPORT_SYMBOL(cfg80211_connect_done); |
b23aa676 | 898 | |
0e3a39b5 | 899 | /* Consumes bss object one way or another */ |
ed9d0102 | 900 | void __cfg80211_roamed(struct wireless_dev *wdev, |
29ce6ecb | 901 | struct cfg80211_roam_info *info) |
b23aa676 | 902 | { |
3d23e349 | 903 | #ifdef CONFIG_CFG80211_WEXT |
b23aa676 SO |
904 | union iwreq_data wrqu; |
905 | #endif | |
667503dd JB |
906 | ASSERT_WDEV_LOCK(wdev); |
907 | ||
074ac8df JB |
908 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && |
909 | wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) | |
adbde344 | 910 | goto out; |
b23aa676 | 911 | |
ceca7b71 | 912 | if (WARN_ON(!wdev->current_bss)) |
adbde344 | 913 | goto out; |
b23aa676 SO |
914 | |
915 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 916 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
b23aa676 SO |
917 | wdev->current_bss = NULL; |
918 | ||
29ce6ecb AS |
919 | if (WARN_ON(!info->bss)) |
920 | return; | |
921 | ||
922 | cfg80211_hold_bss(bss_from_pub(info->bss)); | |
923 | wdev->current_bss = bss_from_pub(info->bss); | |
b23aa676 | 924 | |
4d797fce | 925 | wdev->unprot_beacon_reported = 0; |
f26cbf40 | 926 | nl80211_send_roamed(wiphy_to_rdev(wdev->wiphy), |
29ce6ecb | 927 | wdev->netdev, info, GFP_KERNEL); |
b23aa676 | 928 | |
3d23e349 | 929 | #ifdef CONFIG_CFG80211_WEXT |
29ce6ecb | 930 | if (info->req_ie) { |
b23aa676 | 931 | memset(&wrqu, 0, sizeof(wrqu)); |
29ce6ecb | 932 | wrqu.data.length = info->req_ie_len; |
3409ff77 | 933 | wireless_send_event(wdev->netdev, IWEVASSOCREQIE, |
29ce6ecb | 934 | &wrqu, info->req_ie); |
b23aa676 SO |
935 | } |
936 | ||
29ce6ecb | 937 | if (info->resp_ie) { |
b23aa676 | 938 | memset(&wrqu, 0, sizeof(wrqu)); |
29ce6ecb | 939 | wrqu.data.length = info->resp_ie_len; |
667503dd | 940 | wireless_send_event(wdev->netdev, IWEVASSOCRESPIE, |
29ce6ecb | 941 | &wrqu, info->resp_ie); |
b23aa676 SO |
942 | } |
943 | ||
944 | memset(&wrqu, 0, sizeof(wrqu)); | |
945 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
29ce6ecb AS |
946 | memcpy(wrqu.ap_addr.sa_data, info->bss->bssid, ETH_ALEN); |
947 | memcpy(wdev->wext.prev_bssid, info->bss->bssid, ETH_ALEN); | |
f401a6f7 | 948 | wdev->wext.prev_bssid_valid = true; |
667503dd | 949 | wireless_send_event(wdev->netdev, SIOCGIWAP, &wrqu, NULL); |
b23aa676 | 950 | #endif |
adbde344 VT |
951 | |
952 | return; | |
953 | out: | |
29ce6ecb | 954 | cfg80211_put_bss(wdev->wiphy, info->bss); |
adbde344 | 955 | } |
adbde344 | 956 | |
29ce6ecb AS |
957 | /* Consumes info->bss object one way or another */ |
958 | void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info, | |
959 | gfp_t gfp) | |
667503dd JB |
960 | { |
961 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 962 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
667503dd JB |
963 | struct cfg80211_event *ev; |
964 | unsigned long flags; | |
e841b7b1 | 965 | u8 *next; |
667503dd | 966 | |
29ce6ecb AS |
967 | if (!info->bss) { |
968 | info->bss = cfg80211_get_bss(wdev->wiphy, info->channel, | |
969 | info->bssid, wdev->ssid, | |
970 | wdev->ssid_len, | |
971 | wdev->conn_bss_type, | |
972 | IEEE80211_PRIVACY_ANY); | |
973 | } | |
974 | ||
975 | if (WARN_ON(!info->bss)) | |
adbde344 VT |
976 | return; |
977 | ||
e841b7b1 AVS |
978 | ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len + |
979 | info->fils.kek_len + info->fils.pmk_len + | |
980 | (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); | |
adbde344 | 981 | if (!ev) { |
29ce6ecb | 982 | cfg80211_put_bss(wdev->wiphy, info->bss); |
667503dd | 983 | return; |
adbde344 | 984 | } |
667503dd JB |
985 | |
986 | ev->type = EVENT_ROAMED; | |
e841b7b1 AVS |
987 | next = ((u8 *)ev) + sizeof(*ev); |
988 | if (info->req_ie_len) { | |
989 | ev->rm.req_ie = next; | |
990 | ev->rm.req_ie_len = info->req_ie_len; | |
991 | memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len); | |
992 | next += info->req_ie_len; | |
993 | } | |
994 | if (info->resp_ie_len) { | |
995 | ev->rm.resp_ie = next; | |
996 | ev->rm.resp_ie_len = info->resp_ie_len; | |
997 | memcpy((void *)ev->rm.resp_ie, info->resp_ie, | |
998 | info->resp_ie_len); | |
999 | next += info->resp_ie_len; | |
1000 | } | |
1001 | if (info->fils.kek_len) { | |
1002 | ev->rm.fils.kek = next; | |
1003 | ev->rm.fils.kek_len = info->fils.kek_len; | |
1004 | memcpy((void *)ev->rm.fils.kek, info->fils.kek, | |
1005 | info->fils.kek_len); | |
1006 | next += info->fils.kek_len; | |
1007 | } | |
1008 | if (info->fils.pmk_len) { | |
1009 | ev->rm.fils.pmk = next; | |
1010 | ev->rm.fils.pmk_len = info->fils.pmk_len; | |
1011 | memcpy((void *)ev->rm.fils.pmk, info->fils.pmk, | |
1012 | info->fils.pmk_len); | |
1013 | next += info->fils.pmk_len; | |
1014 | } | |
1015 | if (info->fils.pmkid) { | |
1016 | ev->rm.fils.pmkid = next; | |
1017 | memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid, | |
1018 | WLAN_PMKID_LEN); | |
1019 | next += WLAN_PMKID_LEN; | |
1020 | } | |
1021 | ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num; | |
1022 | if (info->fils.update_erp_next_seq_num) | |
1023 | ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num; | |
29ce6ecb | 1024 | ev->rm.bss = info->bss; |
667503dd JB |
1025 | |
1026 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1027 | list_add_tail(&ev->list, &wdev->event_list); | |
1028 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 1029 | queue_work(cfg80211_wq, &rdev->event_work); |
667503dd | 1030 | } |
29ce6ecb | 1031 | EXPORT_SYMBOL(cfg80211_roamed); |
b23aa676 | 1032 | |
503c1fb9 AS |
1033 | void __cfg80211_port_authorized(struct wireless_dev *wdev, const u8 *bssid) |
1034 | { | |
1035 | ASSERT_WDEV_LOCK(wdev); | |
1036 | ||
1037 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
1038 | return; | |
1039 | ||
1040 | if (WARN_ON(!wdev->current_bss) || | |
1041 | WARN_ON(!ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) | |
1042 | return; | |
1043 | ||
1044 | nl80211_send_port_authorized(wiphy_to_rdev(wdev->wiphy), wdev->netdev, | |
1045 | bssid); | |
1046 | } | |
1047 | ||
1048 | void cfg80211_port_authorized(struct net_device *dev, const u8 *bssid, | |
1049 | gfp_t gfp) | |
1050 | { | |
1051 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
1052 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); | |
1053 | struct cfg80211_event *ev; | |
1054 | unsigned long flags; | |
1055 | ||
1056 | if (WARN_ON(!bssid)) | |
1057 | return; | |
1058 | ||
1059 | ev = kzalloc(sizeof(*ev), gfp); | |
1060 | if (!ev) | |
1061 | return; | |
1062 | ||
1063 | ev->type = EVENT_PORT_AUTHORIZED; | |
1064 | memcpy(ev->pa.bssid, bssid, ETH_ALEN); | |
1065 | ||
1066 | /* | |
1067 | * Use the wdev event list so that if there are pending | |
1068 | * connected/roamed events, they will be reported first. | |
1069 | */ | |
1070 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1071 | list_add_tail(&ev->list, &wdev->event_list); | |
1072 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
1073 | queue_work(cfg80211_wq, &rdev->event_work); | |
1074 | } | |
1075 | EXPORT_SYMBOL(cfg80211_port_authorized); | |
1076 | ||
667503dd | 1077 | void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, |
6829c878 | 1078 | size_t ie_len, u16 reason, bool from_ap) |
b23aa676 SO |
1079 | { |
1080 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
f26cbf40 | 1081 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
fffd0934 | 1082 | int i; |
3d23e349 | 1083 | #ifdef CONFIG_CFG80211_WEXT |
b23aa676 SO |
1084 | union iwreq_data wrqu; |
1085 | #endif | |
1086 | ||
667503dd JB |
1087 | ASSERT_WDEV_LOCK(wdev); |
1088 | ||
074ac8df JB |
1089 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION && |
1090 | wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) | |
b23aa676 SO |
1091 | return; |
1092 | ||
b23aa676 SO |
1093 | if (wdev->current_bss) { |
1094 | cfg80211_unhold_bss(wdev->current_bss); | |
5b112d3d | 1095 | cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); |
b23aa676 SO |
1096 | } |
1097 | ||
1098 | wdev->current_bss = NULL; | |
8dadadb7 | 1099 | wdev->ssid_len = 0; |
bd2522b1 | 1100 | wdev->conn_owner_nlportid = 0; |
3027a8e7 AS |
1101 | kzfree(wdev->connect_keys); |
1102 | wdev->connect_keys = NULL; | |
b23aa676 | 1103 | |
fffd0934 JB |
1104 | nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); |
1105 | ||
b8607152 AS |
1106 | /* stop critical protocol if supported */ |
1107 | if (rdev->ops->crit_proto_stop && rdev->crit_proto_nlportid) { | |
1108 | rdev->crit_proto_nlportid = 0; | |
1109 | rdev_crit_proto_stop(rdev, wdev); | |
1110 | } | |
1111 | ||
fffd0934 JB |
1112 | /* |
1113 | * Delete all the keys ... pairwise keys can't really | |
1114 | * exist any more anyway, but default keys might. | |
1115 | */ | |
56be393f JM |
1116 | if (rdev->ops->del_key) { |
1117 | int max_key_idx = 5; | |
1118 | ||
1119 | if (wiphy_ext_feature_isset( | |
1120 | wdev->wiphy, | |
0e47901d JB |
1121 | NL80211_EXT_FEATURE_BEACON_PROTECTION) || |
1122 | wiphy_ext_feature_isset( | |
1123 | wdev->wiphy, | |
1124 | NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) | |
56be393f JM |
1125 | max_key_idx = 7; |
1126 | for (i = 0; i <= max_key_idx; i++) | |
e35e4d28 | 1127 | rdev_del_key(rdev, dev, i, false, NULL); |
56be393f | 1128 | } |
b23aa676 | 1129 | |
fa9ffc74 KP |
1130 | rdev_set_qos_map(rdev, dev, NULL); |
1131 | ||
3d23e349 | 1132 | #ifdef CONFIG_CFG80211_WEXT |
b23aa676 SO |
1133 | memset(&wrqu, 0, sizeof(wrqu)); |
1134 | wrqu.ap_addr.sa_family = ARPHRD_ETHER; | |
1135 | wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); | |
5f612033 | 1136 | wdev->wext.connect.ssid_len = 0; |
b23aa676 | 1137 | #endif |
09d989d1 LR |
1138 | |
1139 | schedule_work(&cfg80211_disconnect_work); | |
b23aa676 SO |
1140 | } |
1141 | ||
1142 | void cfg80211_disconnected(struct net_device *dev, u16 reason, | |
80279fb7 JB |
1143 | const u8 *ie, size_t ie_len, |
1144 | bool locally_generated, gfp_t gfp) | |
b23aa676 | 1145 | { |
667503dd | 1146 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
f26cbf40 | 1147 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); |
667503dd JB |
1148 | struct cfg80211_event *ev; |
1149 | unsigned long flags; | |
1150 | ||
1151 | ev = kzalloc(sizeof(*ev) + ie_len, gfp); | |
1152 | if (!ev) | |
1153 | return; | |
1154 | ||
1155 | ev->type = EVENT_DISCONNECTED; | |
1156 | ev->dc.ie = ((u8 *)ev) + sizeof(*ev); | |
1157 | ev->dc.ie_len = ie_len; | |
1158 | memcpy((void *)ev->dc.ie, ie, ie_len); | |
1159 | ev->dc.reason = reason; | |
80279fb7 | 1160 | ev->dc.locally_generated = locally_generated; |
667503dd JB |
1161 | |
1162 | spin_lock_irqsave(&wdev->event_lock, flags); | |
1163 | list_add_tail(&ev->list, &wdev->event_list); | |
1164 | spin_unlock_irqrestore(&wdev->event_lock, flags); | |
e60d7443 | 1165 | queue_work(cfg80211_wq, &rdev->event_work); |
b23aa676 SO |
1166 | } |
1167 | EXPORT_SYMBOL(cfg80211_disconnected); | |
1168 | ||
ceca7b71 JB |
1169 | /* |
1170 | * API calls for nl80211/wext compatibility code | |
1171 | */ | |
83739b03 JB |
1172 | int cfg80211_connect(struct cfg80211_registered_device *rdev, |
1173 | struct net_device *dev, | |
1174 | struct cfg80211_connect_params *connect, | |
1175 | struct cfg80211_cached_keys *connkeys, | |
1176 | const u8 *prev_bssid) | |
b23aa676 | 1177 | { |
b23aa676 | 1178 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
667503dd JB |
1179 | int err; |
1180 | ||
1181 | ASSERT_WDEV_LOCK(wdev); | |
b23aa676 | 1182 | |
51e13359 JB |
1183 | /* |
1184 | * If we have an ssid_len, we're trying to connect or are | |
1185 | * already connected, so reject a new SSID unless it's the | |
1186 | * same (which is the case for re-association.) | |
1187 | */ | |
1188 | if (wdev->ssid_len && | |
1189 | (wdev->ssid_len != connect->ssid_len || | |
1190 | memcmp(wdev->ssid, connect->ssid, wdev->ssid_len))) | |
1191 | return -EALREADY; | |
1192 | ||
1193 | /* | |
1194 | * If connected, reject (re-)association unless prev_bssid | |
1195 | * matches the current BSSID. | |
1196 | */ | |
1197 | if (wdev->current_bss) { | |
1198 | if (!prev_bssid) | |
1199 | return -EALREADY; | |
1200 | if (!ether_addr_equal(prev_bssid, wdev->current_bss->pub.bssid)) | |
1201 | return -ENOTCONN; | |
fffd0934 JB |
1202 | } |
1203 | ||
51e13359 JB |
1204 | /* |
1205 | * Reject if we're in the process of connecting with WEP, | |
1206 | * this case isn't very interesting and trying to handle | |
1207 | * it would make the code much more complex. | |
1208 | */ | |
1209 | if (wdev->connect_keys) | |
1210 | return -EINPROGRESS; | |
1211 | ||
7e7c8926 BG |
1212 | cfg80211_oper_and_ht_capa(&connect->ht_capa_mask, |
1213 | rdev->wiphy.ht_capa_mod_mask); | |
81c5dce2 SM |
1214 | cfg80211_oper_and_vht_capa(&connect->vht_capa_mask, |
1215 | rdev->wiphy.vht_capa_mod_mask); | |
7e7c8926 | 1216 | |
fffd0934 JB |
1217 | if (connkeys && connkeys->def >= 0) { |
1218 | int idx; | |
bcba8eae | 1219 | u32 cipher; |
fffd0934 JB |
1220 | |
1221 | idx = connkeys->def; | |
bcba8eae | 1222 | cipher = connkeys->params[idx].cipher; |
fffd0934 | 1223 | /* If given a WEP key we may need it for shared key auth */ |
bcba8eae SO |
1224 | if (cipher == WLAN_CIPHER_SUITE_WEP40 || |
1225 | cipher == WLAN_CIPHER_SUITE_WEP104) { | |
fffd0934 JB |
1226 | connect->key_idx = idx; |
1227 | connect->key = connkeys->params[idx].key; | |
1228 | connect->key_len = connkeys->params[idx].key_len; | |
bcba8eae SO |
1229 | |
1230 | /* | |
1231 | * If ciphers are not set (e.g. when going through | |
1232 | * iwconfig), we have to set them appropriately here. | |
1233 | */ | |
1234 | if (connect->crypto.cipher_group == 0) | |
1235 | connect->crypto.cipher_group = cipher; | |
1236 | ||
1237 | if (connect->crypto.n_ciphers_pairwise == 0) { | |
1238 | connect->crypto.n_ciphers_pairwise = 1; | |
1239 | connect->crypto.ciphers_pairwise[0] = cipher; | |
1240 | } | |
fffd0934 | 1241 | } |
b8676221 DS |
1242 | |
1243 | connect->crypto.wep_keys = connkeys->params; | |
1244 | connect->crypto.wep_tx_key = connkeys->def; | |
f1c1f17a JB |
1245 | } else { |
1246 | if (WARN_ON(connkeys)) | |
1247 | return -EINVAL; | |
fffd0934 JB |
1248 | } |
1249 | ||
ceca7b71 JB |
1250 | wdev->connect_keys = connkeys; |
1251 | memcpy(wdev->ssid, connect->ssid, connect->ssid_len); | |
1252 | wdev->ssid_len = connect->ssid_len; | |
6829c878 | 1253 | |
34d50519 LD |
1254 | wdev->conn_bss_type = connect->pbss ? IEEE80211_BSS_TYPE_PBSS : |
1255 | IEEE80211_BSS_TYPE_ESS; | |
1256 | ||
ceca7b71 JB |
1257 | if (!rdev->ops->connect) |
1258 | err = cfg80211_sme_connect(wdev, connect, prev_bssid); | |
1259 | else | |
e35e4d28 | 1260 | err = rdev_connect(rdev, dev, connect); |
b23aa676 | 1261 | |
ceca7b71 JB |
1262 | if (err) { |
1263 | wdev->connect_keys = NULL; | |
51e13359 JB |
1264 | /* |
1265 | * This could be reassoc getting refused, don't clear | |
1266 | * ssid_len in that case. | |
1267 | */ | |
1268 | if (!wdev->current_bss) | |
1269 | wdev->ssid_len = 0; | |
ceca7b71 | 1270 | return err; |
6829c878 | 1271 | } |
ceca7b71 JB |
1272 | |
1273 | return 0; | |
b23aa676 SO |
1274 | } |
1275 | ||
83739b03 JB |
1276 | int cfg80211_disconnect(struct cfg80211_registered_device *rdev, |
1277 | struct net_device *dev, u16 reason, bool wextev) | |
b23aa676 | 1278 | { |
6829c878 | 1279 | struct wireless_dev *wdev = dev->ieee80211_ptr; |
dee8a973 | 1280 | int err = 0; |
b23aa676 | 1281 | |
667503dd JB |
1282 | ASSERT_WDEV_LOCK(wdev); |
1283 | ||
b47f610b | 1284 | kzfree(wdev->connect_keys); |
fffd0934 JB |
1285 | wdev->connect_keys = NULL; |
1286 | ||
bd2522b1 AZ |
1287 | wdev->conn_owner_nlportid = 0; |
1288 | ||
dee8a973 | 1289 | if (wdev->conn) |
ceca7b71 | 1290 | err = cfg80211_sme_disconnect(wdev, reason); |
dee8a973 | 1291 | else if (!rdev->ops->disconnect) |
ceca7b71 | 1292 | cfg80211_mlme_down(rdev, dev); |
0711d638 | 1293 | else if (wdev->ssid_len) |
e35e4d28 | 1294 | err = rdev_disconnect(rdev, dev, reason); |
b23aa676 | 1295 | |
51e13359 JB |
1296 | /* |
1297 | * Clear ssid_len unless we actually were fully connected, | |
1298 | * in which case cfg80211_disconnected() will take care of | |
1299 | * this later. | |
1300 | */ | |
1301 | if (!wdev->current_bss) | |
1302 | wdev->ssid_len = 0; | |
1303 | ||
ceca7b71 | 1304 | return err; |
19957bb3 | 1305 | } |
bd2522b1 AZ |
1306 | |
1307 | /* | |
1308 | * Used to clean up after the connection / connection attempt owner socket | |
1309 | * disconnects | |
1310 | */ | |
1311 | void cfg80211_autodisconnect_wk(struct work_struct *work) | |
1312 | { | |
1313 | struct wireless_dev *wdev = | |
1314 | container_of(work, struct wireless_dev, disconnect_wk); | |
1315 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); | |
1316 | ||
1317 | wdev_lock(wdev); | |
1318 | ||
1319 | if (wdev->conn_owner_nlportid) { | |
37b1c004 DK |
1320 | switch (wdev->iftype) { |
1321 | case NL80211_IFTYPE_ADHOC: | |
5a128a08 | 1322 | __cfg80211_leave_ibss(rdev, wdev->netdev, false); |
37b1c004 DK |
1323 | break; |
1324 | case NL80211_IFTYPE_AP: | |
1325 | case NL80211_IFTYPE_P2P_GO: | |
5a128a08 | 1326 | __cfg80211_stop_ap(rdev, wdev->netdev, false); |
37b1c004 DK |
1327 | break; |
1328 | case NL80211_IFTYPE_MESH_POINT: | |
5a128a08 | 1329 | __cfg80211_leave_mesh(rdev, wdev->netdev); |
37b1c004 DK |
1330 | break; |
1331 | case NL80211_IFTYPE_STATION: | |
1332 | case NL80211_IFTYPE_P2P_CLIENT: | |
1333 | /* | |
1334 | * Use disconnect_bssid if still connecting and | |
1335 | * ops->disconnect not implemented. Otherwise we can | |
1336 | * use cfg80211_disconnect. | |
1337 | */ | |
1338 | if (rdev->ops->disconnect || wdev->current_bss) | |
1339 | cfg80211_disconnect(rdev, wdev->netdev, | |
1340 | WLAN_REASON_DEAUTH_LEAVING, | |
1341 | true); | |
1342 | else | |
1343 | cfg80211_mlme_deauth(rdev, wdev->netdev, | |
1344 | wdev->disconnect_bssid, | |
1345 | NULL, 0, | |
1346 | WLAN_REASON_DEAUTH_LEAVING, | |
1347 | false); | |
1348 | break; | |
1349 | default: | |
1350 | break; | |
1351 | } | |
bd2522b1 AZ |
1352 | } |
1353 | ||
1354 | wdev_unlock(wdev); | |
1355 | } |