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 JB |
122 | struct cfg80211_chan_def chandef = { |
123 | ._type = NL80211_CHAN_NO_HT, | |
124 | }; | |
125 | ||
126 | chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq); | |
127 | if (chandef.chan) | |
128 | err = cfg80211_set_monitor_channel(rdev, &chandef); | |
129 | else | |
130 | err = -EINVAL; | |
667503dd | 131 | goto out; |
f2129354 JB |
132 | } |
133 | ||
59bbb6f7 | 134 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
135 | out: |
136 | wdev_unlock(wdev); | |
59bbb6f7 | 137 | mutex_unlock(&rdev->devlist_mtx); |
667503dd JB |
138 | cfg80211_unlock_rdev(rdev); |
139 | return err; | |
f2129354 | 140 | } |
f2129354 JB |
141 | |
142 | int cfg80211_mgd_wext_giwfreq(struct net_device *dev, | |
143 | struct iw_request_info *info, | |
144 | struct iw_freq *freq, char *extra) | |
145 | { | |
146 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
147 | struct ieee80211_channel *chan = NULL; | |
148 | ||
149 | /* call only for station! */ | |
150 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
151 | return -EINVAL; | |
152 | ||
667503dd | 153 | wdev_lock(wdev); |
f2129354 | 154 | if (wdev->current_bss) |
19957bb3 | 155 | chan = wdev->current_bss->pub.channel; |
f2129354 JB |
156 | else if (wdev->wext.connect.channel) |
157 | chan = wdev->wext.connect.channel; | |
667503dd | 158 | wdev_unlock(wdev); |
f2129354 JB |
159 | |
160 | if (chan) { | |
161 | freq->m = chan->center_freq; | |
162 | freq->e = 6; | |
163 | return 0; | |
164 | } | |
165 | ||
166 | /* no channel if not joining */ | |
167 | return -EINVAL; | |
168 | } | |
f2129354 JB |
169 | |
170 | int cfg80211_mgd_wext_siwessid(struct net_device *dev, | |
171 | struct iw_request_info *info, | |
172 | struct iw_point *data, char *ssid) | |
173 | { | |
174 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 175 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
176 | size_t len = data->length; |
177 | int err; | |
178 | ||
179 | /* call only for station! */ | |
180 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
181 | return -EINVAL; | |
182 | ||
183 | if (!data->flags) | |
184 | len = 0; | |
185 | ||
186 | /* iwconfig uses nul termination in SSID.. */ | |
187 | if (len > 0 && ssid[len - 1] == '\0') | |
188 | len--; | |
189 | ||
59bbb6f7 JB |
190 | cfg80211_lock_rdev(rdev); |
191 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
192 | wdev_lock(wdev); |
193 | ||
194 | err = 0; | |
195 | ||
f2129354 JB |
196 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
197 | bool event = true; | |
25e83c49 JB |
198 | |
199 | if (wdev->wext.connect.ssid && len && | |
200 | len == wdev->wext.connect.ssid_len && | |
201 | memcmp(wdev->wext.connect.ssid, ssid, len) == 0) | |
202 | goto out; | |
203 | ||
f2129354 JB |
204 | /* if SSID set now, we'll try to connect, avoid event */ |
205 | if (len) | |
206 | event = false; | |
59bbb6f7 JB |
207 | err = __cfg80211_disconnect(rdev, dev, |
208 | WLAN_REASON_DEAUTH_LEAVING, event); | |
f2129354 | 209 | if (err) |
667503dd | 210 | goto out; |
f2129354 JB |
211 | } |
212 | ||
f401a6f7 | 213 | wdev->wext.prev_bssid_valid = false; |
f2129354 JB |
214 | wdev->wext.connect.ssid = wdev->wext.ssid; |
215 | memcpy(wdev->wext.ssid, ssid, len); | |
216 | wdev->wext.connect.ssid_len = len; | |
217 | ||
218 | wdev->wext.connect.crypto.control_port = false; | |
c0692b8f JB |
219 | wdev->wext.connect.crypto.control_port_ethertype = |
220 | cpu_to_be16(ETH_P_PAE); | |
f2129354 | 221 | |
59bbb6f7 | 222 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
223 | out: |
224 | wdev_unlock(wdev); | |
59bbb6f7 JB |
225 | mutex_unlock(&rdev->devlist_mtx); |
226 | cfg80211_unlock_rdev(rdev); | |
667503dd | 227 | return err; |
f2129354 | 228 | } |
f2129354 JB |
229 | |
230 | int cfg80211_mgd_wext_giwessid(struct net_device *dev, | |
231 | struct iw_request_info *info, | |
232 | struct iw_point *data, char *ssid) | |
233 | { | |
234 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
235 | ||
236 | /* call only for station! */ | |
237 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
238 | return -EINVAL; | |
239 | ||
240 | data->flags = 0; | |
241 | ||
667503dd | 242 | wdev_lock(wdev); |
a42dd7ef ZY |
243 | if (wdev->current_bss) { |
244 | const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, | |
245 | WLAN_EID_SSID); | |
246 | if (ie) { | |
247 | data->flags = 1; | |
248 | data->length = ie[1]; | |
249 | memcpy(ssid, ie + 2, data->length); | |
250 | } | |
251 | } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) { | |
f2129354 JB |
252 | data->flags = 1; |
253 | data->length = wdev->wext.connect.ssid_len; | |
254 | memcpy(ssid, wdev->wext.connect.ssid, data->length); | |
33de4f9d | 255 | } |
667503dd | 256 | wdev_unlock(wdev); |
f2129354 JB |
257 | |
258 | return 0; | |
259 | } | |
f2129354 JB |
260 | |
261 | int cfg80211_mgd_wext_siwap(struct net_device *dev, | |
262 | struct iw_request_info *info, | |
263 | struct sockaddr *ap_addr, char *extra) | |
264 | { | |
265 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
59bbb6f7 | 266 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); |
f2129354 JB |
267 | u8 *bssid = ap_addr->sa_data; |
268 | int err; | |
269 | ||
270 | /* call only for station! */ | |
271 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
272 | return -EINVAL; | |
273 | ||
274 | if (ap_addr->sa_family != ARPHRD_ETHER) | |
275 | return -EINVAL; | |
276 | ||
277 | /* automatic mode */ | |
278 | if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid)) | |
279 | bssid = NULL; | |
280 | ||
59bbb6f7 JB |
281 | cfg80211_lock_rdev(rdev); |
282 | mutex_lock(&rdev->devlist_mtx); | |
667503dd JB |
283 | wdev_lock(wdev); |
284 | ||
25e83c49 JB |
285 | if (wdev->sme_state != CFG80211_SME_IDLE) { |
286 | err = 0; | |
287 | /* both automatic */ | |
288 | if (!bssid && !wdev->wext.connect.bssid) | |
289 | goto out; | |
f2129354 | 290 | |
25e83c49 JB |
291 | /* fixed already - and no change */ |
292 | if (wdev->wext.connect.bssid && bssid && | |
ac422d3c | 293 | ether_addr_equal(bssid, wdev->wext.connect.bssid)) |
25e83c49 | 294 | goto out; |
f2129354 | 295 | |
59bbb6f7 JB |
296 | err = __cfg80211_disconnect(rdev, dev, |
297 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 298 | if (err) |
667503dd | 299 | goto out; |
f2129354 JB |
300 | } |
301 | ||
302 | if (bssid) { | |
303 | memcpy(wdev->wext.bssid, bssid, ETH_ALEN); | |
304 | wdev->wext.connect.bssid = wdev->wext.bssid; | |
305 | } else | |
306 | wdev->wext.connect.bssid = NULL; | |
307 | ||
59bbb6f7 | 308 | err = cfg80211_mgd_wext_connect(rdev, wdev); |
667503dd JB |
309 | out: |
310 | wdev_unlock(wdev); | |
59bbb6f7 JB |
311 | mutex_unlock(&rdev->devlist_mtx); |
312 | cfg80211_unlock_rdev(rdev); | |
667503dd | 313 | return err; |
f2129354 | 314 | } |
f2129354 JB |
315 | |
316 | int cfg80211_mgd_wext_giwap(struct net_device *dev, | |
317 | struct iw_request_info *info, | |
318 | struct sockaddr *ap_addr, char *extra) | |
319 | { | |
320 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
321 | ||
322 | /* call only for station! */ | |
323 | if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) | |
324 | return -EINVAL; | |
325 | ||
326 | ap_addr->sa_family = ARPHRD_ETHER; | |
327 | ||
667503dd | 328 | wdev_lock(wdev); |
f2129354 | 329 | if (wdev->current_bss) |
19957bb3 | 330 | memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); |
f2129354 JB |
331 | else |
332 | memset(ap_addr->sa_data, 0, ETH_ALEN); | |
667503dd | 333 | wdev_unlock(wdev); |
f2129354 JB |
334 | |
335 | return 0; | |
336 | } | |
f2129354 JB |
337 | |
338 | int cfg80211_wext_siwgenie(struct net_device *dev, | |
339 | struct iw_request_info *info, | |
340 | struct iw_point *data, char *extra) | |
341 | { | |
342 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
343 | struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); | |
344 | u8 *ie = extra; | |
345 | int ie_len = data->length, err; | |
346 | ||
347 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
348 | return -EOPNOTSUPP; | |
349 | ||
350 | if (!ie_len) | |
351 | ie = NULL; | |
352 | ||
667503dd JB |
353 | wdev_lock(wdev); |
354 | ||
f2129354 | 355 | /* no change */ |
667503dd | 356 | err = 0; |
f2129354 JB |
357 | if (wdev->wext.ie_len == ie_len && |
358 | memcmp(wdev->wext.ie, ie, ie_len) == 0) | |
667503dd | 359 | goto out; |
f2129354 JB |
360 | |
361 | if (ie_len) { | |
362 | ie = kmemdup(extra, ie_len, GFP_KERNEL); | |
667503dd JB |
363 | if (!ie) { |
364 | err = -ENOMEM; | |
365 | goto out; | |
366 | } | |
f2129354 JB |
367 | } else |
368 | ie = NULL; | |
369 | ||
370 | kfree(wdev->wext.ie); | |
371 | wdev->wext.ie = ie; | |
372 | wdev->wext.ie_len = ie_len; | |
373 | ||
374 | if (wdev->sme_state != CFG80211_SME_IDLE) { | |
667503dd JB |
375 | err = __cfg80211_disconnect(rdev, dev, |
376 | WLAN_REASON_DEAUTH_LEAVING, false); | |
f2129354 | 377 | if (err) |
667503dd | 378 | goto out; |
f2129354 JB |
379 | } |
380 | ||
381 | /* userspace better not think we'll reconnect */ | |
667503dd JB |
382 | err = 0; |
383 | out: | |
384 | wdev_unlock(wdev); | |
385 | return err; | |
f2129354 | 386 | } |
f2129354 JB |
387 | |
388 | int cfg80211_wext_siwmlme(struct net_device *dev, | |
389 | struct iw_request_info *info, | |
390 | struct iw_point *data, char *extra) | |
391 | { | |
392 | struct wireless_dev *wdev = dev->ieee80211_ptr; | |
393 | struct iw_mlme *mlme = (struct iw_mlme *)extra; | |
394 | struct cfg80211_registered_device *rdev; | |
667503dd | 395 | int err; |
f2129354 JB |
396 | |
397 | if (!wdev) | |
398 | return -EOPNOTSUPP; | |
399 | ||
400 | rdev = wiphy_to_dev(wdev->wiphy); | |
401 | ||
402 | if (wdev->iftype != NL80211_IFTYPE_STATION) | |
403 | return -EINVAL; | |
404 | ||
405 | if (mlme->addr.sa_family != ARPHRD_ETHER) | |
406 | return -EINVAL; | |
407 | ||
667503dd | 408 | wdev_lock(wdev); |
f2129354 JB |
409 | switch (mlme->cmd) { |
410 | case IW_MLME_DEAUTH: | |
411 | case IW_MLME_DISASSOC: | |
667503dd JB |
412 | err = __cfg80211_disconnect(rdev, dev, mlme->reason_code, |
413 | true); | |
414 | break; | |
f2129354 | 415 | default: |
667503dd JB |
416 | err = -EOPNOTSUPP; |
417 | break; | |
f2129354 | 418 | } |
667503dd JB |
419 | wdev_unlock(wdev); |
420 | ||
421 | return err; | |
f2129354 | 422 | } |