Commit | Line | Data |
---|---|---|
f2129354 JB |
1 | /* |
2 | * cfg80211 wext compat for managed mode. | |
3 | * | |
4 | * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> | |
5 | * Copyright (C) 2009 Intel Corporation. All rights reserved. | |
6 | */ | |
7 | ||
bc3b2d7f | 8 | #include <linux/export.h> |
f2129354 JB |
9 | #include <linux/etherdevice.h> |
10 | #include <linux/if_arp.h> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
f2129354 | 12 | #include <net/cfg80211.h> |
262eb9b2 | 13 | #include <net/cfg80211-wext.h> |
0e82ffe3 | 14 | #include "wext-compat.h" |
f2129354 JB |
15 | #include "nl80211.h" |
16 | ||
fffd0934 JB |
17 | int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, |
18 | struct wireless_dev *wdev) | |
f2129354 | 19 | { |
fffd0934 | 20 | struct cfg80211_cached_keys *ck = NULL; |
f401a6f7 | 21 | const u8 *prev_bssid = NULL; |
fffd0934 | 22 | int err, i; |
f2129354 | 23 | |
667503dd JB |
24 | ASSERT_RDEV_LOCK(rdev); |
25 | ASSERT_WDEV_LOCK(wdev); | |
26 | ||
f2129354 JB |
27 | if (!netif_running(wdev->netdev)) |
28 | return 0; | |
29 | ||
30 | wdev->wext.connect.ie = wdev->wext.ie; | |
31 | wdev->wext.connect.ie_len = wdev->wext.ie_len; | |
f2129354 | 32 | |
4486ea98 BS |
33 | /* Use default background scan period */ |
34 | wdev->wext.connect.bg_scan_period = -1; | |
35 | ||
fffd0934 JB |
36 | if (wdev->wext.keys) { |
37 | wdev->wext.keys->def = wdev->wext.default_key; | |
38 | wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key; | |
4be3bd8c JB |
39 | if (wdev->wext.default_key != -1) |
40 | wdev->wext.connect.privacy = true; | |
fffd0934 JB |
41 | } |
42 | ||
43 | if (!wdev->wext.connect.ssid_len) | |
44 | return 0; | |
45 | ||
46 | if (wdev->wext.keys) { | |
47 | ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL); | |
48 | if (!ck) | |
49 | return -ENOMEM; | |
50 | for (i = 0; i < 6; i++) | |
51 | ck->params[i].key = ck->data[i]; | |
52 | } | |
f401a6f7 JB |
53 | |
54 | if (wdev->wext.prev_bssid_valid) | |
55 | prev_bssid = wdev->wext.prev_bssid; | |
56 | ||
fffd0934 | 57 | err = __cfg80211_connect(rdev, wdev->netdev, |
f401a6f7 | 58 | &wdev->wext.connect, ck, prev_bssid); |
fffd0934 JB |
59 | if (err) |
60 | kfree(ck); | |
f2129354 JB |
61 | |
62 | return err; | |
63 | } | |
64 | ||
65 | int cfg80211_mgd_wext_siwfreq(struct net_device *dev, | |
66 | struct iw_request_info *info, | |
59bbb6f7 | 67 | struct iw_freq *wextfreq, char *extra) |
f2129354 JB |
68 | { |
69 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
70 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
59bbb6f7 JB |
71 | struct ieee80211_channel *chan = NULL; |
72 | int err, freq; | |
f2129354 JB |
73 | |
74 | /* call only for station! */ | |
75 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
76 | return -EINVAL; | |
77 | ||
59bbb6f7 JB |
78 | freq = cfg80211_wext_freq(wdev->wiphy, wextfreq); |
79 | if (freq < 0) | |
80 | return freq; | |
f2129354 | 81 | |
59bbb6f7 JB |
82 | if (freq) { |
83 | chan = ieee80211_get_channel(wdev->wiphy, freq); | |
84 | if (!chan) | |
85 | return -EINVAL; | |
86 | if (chan->flags & IEEE80211_CHAN_DISABLED) | |
87 | return -EINVAL; | |
88 | } | |
f2129354 | 89 | |
667503dd | 90 | cfg80211_lock_rdev(rdev); |
59bbb6f7 | 91 | mutex_lock(&rdev->devlist_mtx); |
667503dd JB |
92 | wdev_lock(wdev); |
93 | ||
f2129354 JB |
94 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
95 | bool event = true; | |
25e83c49 JB |
96 | |
97 | if (wdev->wext.connect.channel == chan) { | |
98 | err = 0; | |
99 | goto out; | |
100 | } | |
101 | ||
f2129354 JB |
102 | /* if SSID set, we'll try right again, avoid event */ |
103 | if (wdev->wext.connect.ssid_len) | |
104 | event = false; | |
59bbb6f7 JB |
105 | err = __cfg80211_disconnect(rdev, dev, |
106 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 107 | if (err) |
667503dd | 108 | goto out; |
f2129354 JB |
109 | } |
110 | ||
667503dd | 111 | |
f2129354 JB |
112 | wdev->wext.connect.channel = chan; |
113 | ||
e8c9bd5b JB |
114 | /* |
115 | * SSID is not set, we just want to switch monitor channel, | |
116 | * this is really just backward compatibility, if the SSID | |
117 | * is set then we use the channel to select the BSS to use | |
118 | * to connect to instead. If we were connected on another | |
119 | * channel we disconnected above and reconnect below. | |
120 | */ | |
59bbb6f7 | 121 | if (chan && !wdev->wext.connect.ssid_len) { |
683b6d3b | 122 | struct cfg80211_chan_def chandef = { |
3d9d1d66 JB |
123 | .width = NL80211_CHAN_WIDTH_20_NOHT, |
124 | .center_freq1 = freq, | |
683b6d3b JB |
125 | }; |
126 | ||
127 | chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); | |
128 | if (chandef.chan) | |
129 | err = cfg80211_set_monitor_channel(rdev, &chandef); | |
130 | else | |
131 | err = -EINVAL; | |
667503dd | 132 | goto out; |
f2129354 JB |
133 | } |
134 | ||
59bbb6f7 | 135 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
136 | out: |
137 | wdev_unlock(wdev); | |
59bbb6f7 | 138 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
139 | cfg80211_unlock_rdev(rdev); |
140 | return err; | |
f2129354 | 141 | } |
f2129354 JB |
142 | |
143 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
144 | struct iw_request_info *info, | |
145 | struct iw_freq *freq, char *extra) | |
146 | { | |
147 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
148 | struct ieee80211_channel *chan = NULL; | |
149 | ||
150 | /* call only for station! */ | |
151 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
152 | return -EINVAL; | |
153 | ||
667503dd | 154 | wdev_lock(wdev); |
f2129354 | 155 | if (wdev->current_bss) |
19957bb3 | 156 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
157 | else if (wdev->wext.connect.channel) |
158 | chan = wdev->wext.connect.channel; | |
667503dd | 159 | wdev_unlock(wdev); |
f2129354 JB |
160 | |
161 | if (chan) { | |
162 | freq->m = chan->center_freq; | |
163 | freq->e = 6; | |
164 | return 0; | |
165 | } | |
166 | ||
167 | /* no channel if not joining */ | |
168 | return -EINVAL; | |
169 | } | |
f2129354 JB |
170 | |
171 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
172 | struct iw_request_info *info, | |
173 | struct iw_point *data, char *ssid) | |
174 | { | |
175 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 176 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
177 | size_t len = data->length; |
178 | int err; | |
179 | ||
180 | /* call only for station! */ | |
181 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
182 | return -EINVAL; | |
183 | ||
184 | if (!data->flags) | |
185 | len = 0; | |
186 | ||
187 | /* iwconfig uses nul termination in SSID.. */ | |
188 | if (len > 0 && ssid[len - 1] == '\0') | |
189 | len--; | |
190 | ||
59bbb6f7 JB |
191 | cfg80211_lock_rdev(rdev); |
192 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
193 | wdev_lock(wdev); |
194 | ||
195 | err = 0; | |
196 | ||
f2129354 JB |
197 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
198 | bool event = true; | |
25e83c49 JB |
199 | |
200 | if (wdev->wext.connect.ssid && len && | |
201 | len == wdev->wext.connect.ssid_len && | |
202 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
203 | goto out; | |
204 | ||
f2129354 JB |
205 | /* if SSID set now, we'll try to connect, avoid event */ |
206 | if (len) | |
207 | event = false; | |
59bbb6f7 JB |
208 | err = __cfg80211_disconnect(rdev, dev, |
209 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 210 | if (err) |
667503dd | 211 | goto out; |
f2129354 JB |
212 | } |
213 | ||
f401a6f7 | 214 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
215 | wdev->wext.connect.ssid = wdev->wext.ssid; |
216 | memcpy(wdev->wext.ssid, ssid, len); | |
217 | wdev->wext.connect.ssid_len = len; | |
218 | ||
219 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
220 | wdev->wext.connect.crypto.control_port_ethertype = |
221 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 222 | |
59bbb6f7 | 223 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
224 | out: |
225 | wdev_unlock(wdev); | |
59bbb6f7 JB |
226 | mutex_unlock(&rdev->devlist_mtx); |
227 | cfg80211_unlock_rdev(rdev); | |
667503dd | 228 | return err; |
f2129354 | 229 | } |
f2129354 JB |
230 | |
231 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
232 | struct iw_request_info *info, | |
233 | struct iw_point *data, char *ssid) | |
234 | { | |
235 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
236 | ||
237 | /* call only for station! */ | |
238 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
239 | return -EINVAL; | |
240 | ||
241 | data->flags = 0; | |
242 | ||
667503dd | 243 | wdev_lock(wdev); |
a42dd7ef | 244 | if (wdev->current_bss) { |
9caf0364 JB |
245 | const u8 *ie; |
246 | ||
247 | rcu_read_lock(); | |
248 | ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
249 | WLAN_EID_SSID); | |
a42dd7ef ZY |
250 | if (ie) { |
251 | data->flags = 1; | |
252 | data->length = ie[1]; | |
253 | memcpy(ssid, ie + 2, data->length); | |
254 | } | |
9caf0364 | 255 | rcu_read_unlock(); |
a42dd7ef | 256 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { |
f2129354 JB |
257 | data->flags = 1; |
258 | data->length = wdev->wext.connect.ssid_len; | |
259 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 260 | } |
667503dd | 261 | wdev_unlock(wdev); |
f2129354 JB |
262 | |
263 | return 0; | |
264 | } | |
f2129354 JB |
265 | |
266 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
267 | struct iw_request_info *info, | |
268 | struct sockaddr *ap_addr, char *extra) | |
269 | { | |
270 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 271 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
272 | u8 *bssid = ap_addr->sa_data; |
273 | int err; | |
274 | ||
275 | /* call only for station! */ | |
276 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
277 | return -EINVAL; | |
278 | ||
279 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
280 | return -EINVAL; | |
281 | ||
282 | /* automatic mode */ | |
283 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
284 | bssid = NULL; | |
285 | ||
59bbb6f7 JB |
286 | cfg80211_lock_rdev(rdev); |
287 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
288 | wdev_lock(wdev); |
289 | ||
25e83c49 JB |
290 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
291 | err = 0; | |
292 | /* both automatic */ | |
293 | if (!bssid && !wdev->wext.connect.bssid) | |
294 | goto out; | |
f2129354 | 295 | |
25e83c49 JB |
296 | /* fixed already - and no change */ |
297 | if (wdev->wext.connect.bssid && bssid && | |
ac422d3c | 298 | ether_addr_equal(bssid, wdev->wext.connect.bssid)) |
25e83c49 | 299 | goto out; |
f2129354 | 300 | |
59bbb6f7 JB |
301 | err = __cfg80211_disconnect(rdev, dev, |
302 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 303 | if (err) |
667503dd | 304 | goto out; |
f2129354 JB |
305 | } |
306 | ||
307 | if (bssid) { | |
308 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
309 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
310 | } else | |
311 | wdev->wext.connect.bssid = NULL; | |
312 | ||
59bbb6f7 | 313 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
314 | out: |
315 | wdev_unlock(wdev); | |
59bbb6f7 JB |
316 | mutex_unlock(&rdev->devlist_mtx); |
317 | cfg80211_unlock_rdev(rdev); | |
667503dd | 318 | return err; |
f2129354 | 319 | } |
f2129354 JB |
320 | |
321 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
322 | struct iw_request_info *info, | |
323 | struct sockaddr *ap_addr, char *extra) | |
324 | { | |
325 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
326 | ||
327 | /* call only for station! */ | |
328 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
329 | return -EINVAL; | |
330 | ||
331 | ap_addr->sa_family = ARPHRD_ETHER; | |
332 | ||
667503dd | 333 | wdev_lock(wdev); |
f2129354 | 334 | if (wdev->current_bss) |
19957bb3 | 335 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 JB |
336 | else |
337 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
667503dd | 338 | wdev_unlock(wdev); |
f2129354 JB |
339 | |
340 | return 0; | |
341 | } | |
f2129354 JB |
342 | |
343 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
344 | struct iw_request_info *info, | |
345 | struct iw_point *data, char *extra) | |
346 | { | |
347 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
348 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
349 | u8 *ie = extra; | |
350 | int ie_len = data->length, err; | |
351 | ||
352 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
353 | return -EOPNOTSUPP; | |
354 | ||
355 | if (!ie_len) | |
356 | ie = NULL; | |
357 | ||
667503dd JB |
358 | wdev_lock(wdev); |
359 | ||
f2129354 | 360 | /* no change */ |
667503dd | 361 | err = 0; |
f2129354 JB |
362 | if (wdev->wext.ie_len == ie_len && |
363 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 364 | goto out; |
f2129354 JB |
365 | |
366 | if (ie_len) { | |
367 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
368 | if (!ie) { |
369 | err = -ENOMEM; | |
370 | goto out; | |
371 | } | |
f2129354 JB |
372 | } else |
373 | ie = NULL; | |
374 | ||
375 | kfree(wdev->wext.ie); | |
376 | wdev->wext.ie = ie; | |
377 | wdev->wext.ie_len = ie_len; | |
378 | ||
379 | if (wdev->sme_state != CFG80211_SME_IDLE) { | |
667503dd JB |
380 | err = __cfg80211_disconnect(rdev, dev, |
381 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 382 | if (err) |
667503dd | 383 | goto out; |
f2129354 JB |
384 | } |
385 | ||
386 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
387 | err = 0; |
388 | out: | |
389 | wdev_unlock(wdev); | |
390 | return err; | |
f2129354 | 391 | } |
f2129354 JB |
392 | |
393 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
394 | struct iw_request_info *info, | |
395 | struct iw_point *data, char *extra) | |
396 | { | |
397 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
398 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
399 | struct cfg80211_registered_device *rdev; | |
667503dd | 400 | int err; |
f2129354 JB |
401 | |
402 | if (!wdev) | |
403 | return -EOPNOTSUPP; | |
404 | ||
405 | rdev = wiphy_to_dev(wdev->wiphy); | |
406 | ||
407 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
408 | return -EINVAL; | |
409 | ||
410 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
411 | return -EINVAL; | |
412 | ||
667503dd | 413 | wdev_lock(wdev); |
f2129354 JB |
414 | switch (mlme->cmd) { |
415 | case IW_MLME_DEAUTH: | |
416 | case IW_MLME_DISASSOC: | |
667503dd JB |
417 | err = __cfg80211_disconnect(rdev, dev, mlme->reason_code, |
418 | true); | |
419 | break; | |
f2129354 | 420 | default: |
667503dd JB |
421 | err = -EOPNOTSUPP; |
422 | break; | |
f2129354 | 423 | } |
667503dd JB |
424 | wdev_unlock(wdev); |
425 | ||
426 | return err; | |
f2129354 | 427 | } |