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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
8#include <linux/export.h>
9#include <linux/etherdevice.h>
10#include <linux/if_arp.h>
11#include <linux/slab.h>
12#include <net/cfg80211.h>
13#include <net/cfg80211-wext.h>
14#include "wext-compat.h"
15#include "nl80211.h"
16
17int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
18 struct wireless_dev *wdev)
19{
20 struct cfg80211_cached_keys *ck = NULL;
21 const u8 *prev_bssid = NULL;
22 int err, i;
23
24 ASSERT_RTNL();
25 ASSERT_WDEV_LOCK(wdev);
26
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;
32
33 /* Use default background scan period */
34 wdev->wext.connect.bg_scan_period = -1;
35
36 if (wdev->wext.keys) {
37 wdev->wext.keys->def = wdev->wext.default_key;
38 if (wdev->wext.default_key != -1)
39 wdev->wext.connect.privacy = true;
40 }
41
42 if (!wdev->wext.connect.ssid_len)
43 return 0;
44
45 if (wdev->wext.keys && wdev->wext.keys->def != -1) {
46 ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
47 if (!ck)
48 return -ENOMEM;
49 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
50 ck->params[i].key = ck->data[i];
51 }
52
53 if (wdev->wext.prev_bssid_valid)
54 prev_bssid = wdev->wext.prev_bssid;
55
56 err = cfg80211_connect(rdev, wdev->netdev,
57 &wdev->wext.connect, ck, prev_bssid);
58 if (err)
59 kzfree(ck);
60
61 return err;
62}
63
64int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
65 struct iw_request_info *info,
66 struct iw_freq *wextfreq, char *extra)
67{
68 struct wireless_dev *wdev = dev->ieee80211_ptr;
69 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
70 struct ieee80211_channel *chan = NULL;
71 int err, freq;
72
73 /* call only for station! */
74 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
75 return -EINVAL;
76
77 freq = cfg80211_wext_freq(wextfreq);
78 if (freq < 0)
79 return freq;
80
81 if (freq) {
82 chan = ieee80211_get_channel(wdev->wiphy, freq);
83 if (!chan)
84 return -EINVAL;
85 if (chan->flags & IEEE80211_CHAN_DISABLED)
86 return -EINVAL;
87 }
88
89 wdev_lock(wdev);
90
91 if (wdev->conn) {
92 bool event = true;
93
94 if (wdev->wext.connect.channel == chan) {
95 err = 0;
96 goto out;
97 }
98
99 /* if SSID set, we'll try right again, avoid event */
100 if (wdev->wext.connect.ssid_len)
101 event = false;
102 err = cfg80211_disconnect(rdev, dev,
103 WLAN_REASON_DEAUTH_LEAVING, event);
104 if (err)
105 goto out;
106 }
107
108
109 wdev->wext.connect.channel = chan;
110
111 /*
112 * SSID is not set, we just want to switch monitor channel,
113 * this is really just backward compatibility, if the SSID
114 * is set then we use the channel to select the BSS to use
115 * to connect to instead. If we were connected on another
116 * channel we disconnected above and reconnect below.
117 */
118 if (chan && !wdev->wext.connect.ssid_len) {
119 struct cfg80211_chan_def chandef = {
120 .width = NL80211_CHAN_WIDTH_20_NOHT,
121 .center_freq1 = freq,
122 };
123
124 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
125 if (chandef.chan)
126 err = cfg80211_set_monitor_channel(rdev, &chandef);
127 else
128 err = -EINVAL;
129 goto out;
130 }
131
132 err = cfg80211_mgd_wext_connect(rdev, wdev);
133 out:
134 wdev_unlock(wdev);
135 return err;
136}
137
138int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
139 struct iw_request_info *info,
140 struct iw_freq *freq, char *extra)
141{
142 struct wireless_dev *wdev = dev->ieee80211_ptr;
143 struct ieee80211_channel *chan = NULL;
144
145 /* call only for station! */
146 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
147 return -EINVAL;
148
149 wdev_lock(wdev);
150 if (wdev->current_bss)
151 chan = wdev->current_bss->pub.channel;
152 else if (wdev->wext.connect.channel)
153 chan = wdev->wext.connect.channel;
154 wdev_unlock(wdev);
155
156 if (chan) {
157 freq->m = chan->center_freq;
158 freq->e = 6;
159 return 0;
160 }
161
162 /* no channel if not joining */
163 return -EINVAL;
164}
165
166int cfg80211_mgd_wext_siwessid(struct net_device *dev,
167 struct iw_request_info *info,
168 struct iw_point *data, char *ssid)
169{
170 struct wireless_dev *wdev = dev->ieee80211_ptr;
171 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
172 size_t len = data->length;
173 int err;
174
175 /* call only for station! */
176 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
177 return -EINVAL;
178
179 if (!data->flags)
180 len = 0;
181
182 /* iwconfig uses nul termination in SSID.. */
183 if (len > 0 && ssid[len - 1] == '\0')
184 len--;
185
186 wdev_lock(wdev);
187
188 err = 0;
189
190 if (wdev->conn) {
191 bool event = true;
192
193 if (wdev->wext.connect.ssid && len &&
194 len == wdev->wext.connect.ssid_len &&
195 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
196 goto out;
197
198 /* if SSID set now, we'll try to connect, avoid event */
199 if (len)
200 event = false;
201 err = cfg80211_disconnect(rdev, dev,
202 WLAN_REASON_DEAUTH_LEAVING, event);
203 if (err)
204 goto out;
205 }
206
207 wdev->wext.prev_bssid_valid = false;
208 wdev->wext.connect.ssid = wdev->wext.ssid;
209 memcpy(wdev->wext.ssid, ssid, len);
210 wdev->wext.connect.ssid_len = len;
211
212 wdev->wext.connect.crypto.control_port = false;
213 wdev->wext.connect.crypto.control_port_ethertype =
214 cpu_to_be16(ETH_P_PAE);
215
216 err = cfg80211_mgd_wext_connect(rdev, wdev);
217 out:
218 wdev_unlock(wdev);
219 return err;
220}
221
222int cfg80211_mgd_wext_giwessid(struct net_device *dev,
223 struct iw_request_info *info,
224 struct iw_point *data, char *ssid)
225{
226 struct wireless_dev *wdev = dev->ieee80211_ptr;
227
228 /* call only for station! */
229 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
230 return -EINVAL;
231
232 data->flags = 0;
233
234 wdev_lock(wdev);
235 if (wdev->current_bss) {
236 const u8 *ie;
237
238 rcu_read_lock();
239 ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
240 WLAN_EID_SSID);
241 if (ie) {
242 data->flags = 1;
243 data->length = ie[1];
244 memcpy(ssid, ie + 2, data->length);
245 }
246 rcu_read_unlock();
247 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
248 data->flags = 1;
249 data->length = wdev->wext.connect.ssid_len;
250 memcpy(ssid, wdev->wext.connect.ssid, data->length);
251 }
252 wdev_unlock(wdev);
253
254 return 0;
255}
256
257int cfg80211_mgd_wext_siwap(struct net_device *dev,
258 struct iw_request_info *info,
259 struct sockaddr *ap_addr, char *extra)
260{
261 struct wireless_dev *wdev = dev->ieee80211_ptr;
262 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
263 u8 *bssid = ap_addr->sa_data;
264 int err;
265
266 /* call only for station! */
267 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
268 return -EINVAL;
269
270 if (ap_addr->sa_family != ARPHRD_ETHER)
271 return -EINVAL;
272
273 /* automatic mode */
274 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
275 bssid = NULL;
276
277 wdev_lock(wdev);
278
279 if (wdev->conn) {
280 err = 0;
281 /* both automatic */
282 if (!bssid && !wdev->wext.connect.bssid)
283 goto out;
284
285 /* fixed already - and no change */
286 if (wdev->wext.connect.bssid && bssid &&
287 ether_addr_equal(bssid, wdev->wext.connect.bssid))
288 goto out;
289
290 err = cfg80211_disconnect(rdev, dev,
291 WLAN_REASON_DEAUTH_LEAVING, false);
292 if (err)
293 goto out;
294 }
295
296 if (bssid) {
297 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
298 wdev->wext.connect.bssid = wdev->wext.bssid;
299 } else
300 wdev->wext.connect.bssid = NULL;
301
302 err = cfg80211_mgd_wext_connect(rdev, wdev);
303 out:
304 wdev_unlock(wdev);
305 return err;
306}
307
308int cfg80211_mgd_wext_giwap(struct net_device *dev,
309 struct iw_request_info *info,
310 struct sockaddr *ap_addr, char *extra)
311{
312 struct wireless_dev *wdev = dev->ieee80211_ptr;
313
314 /* call only for station! */
315 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
316 return -EINVAL;
317
318 ap_addr->sa_family = ARPHRD_ETHER;
319
320 wdev_lock(wdev);
321 if (wdev->current_bss)
322 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
323 else
324 eth_zero_addr(ap_addr->sa_data);
325 wdev_unlock(wdev);
326
327 return 0;
328}
329
330int cfg80211_wext_siwgenie(struct net_device *dev,
331 struct iw_request_info *info,
332 struct iw_point *data, char *extra)
333{
334 struct wireless_dev *wdev = dev->ieee80211_ptr;
335 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
336 u8 *ie = extra;
337 int ie_len = data->length, err;
338
339 if (wdev->iftype != NL80211_IFTYPE_STATION)
340 return -EOPNOTSUPP;
341
342 if (!ie_len)
343 ie = NULL;
344
345 wdev_lock(wdev);
346
347 /* no change */
348 err = 0;
349 if (wdev->wext.ie_len == ie_len &&
350 memcmp(wdev->wext.ie, ie, ie_len) == 0)
351 goto out;
352
353 if (ie_len) {
354 ie = kmemdup(extra, ie_len, GFP_KERNEL);
355 if (!ie) {
356 err = -ENOMEM;
357 goto out;
358 }
359 } else
360 ie = NULL;
361
362 kfree(wdev->wext.ie);
363 wdev->wext.ie = ie;
364 wdev->wext.ie_len = ie_len;
365
366 if (wdev->conn) {
367 err = cfg80211_disconnect(rdev, dev,
368 WLAN_REASON_DEAUTH_LEAVING, false);
369 if (err)
370 goto out;
371 }
372
373 /* userspace better not think we'll reconnect */
374 err = 0;
375 out:
376 wdev_unlock(wdev);
377 return err;
378}
379
380int cfg80211_wext_siwmlme(struct net_device *dev,
381 struct iw_request_info *info,
382 struct iw_point *data, char *extra)
383{
384 struct wireless_dev *wdev = dev->ieee80211_ptr;
385 struct iw_mlme *mlme = (struct iw_mlme *)extra;
386 struct cfg80211_registered_device *rdev;
387 int err;
388
389 if (!wdev)
390 return -EOPNOTSUPP;
391
392 rdev = wiphy_to_rdev(wdev->wiphy);
393
394 if (wdev->iftype != NL80211_IFTYPE_STATION)
395 return -EINVAL;
396
397 if (mlme->addr.sa_family != ARPHRD_ETHER)
398 return -EINVAL;
399
400 wdev_lock(wdev);
401 switch (mlme->cmd) {
402 case IW_MLME_DEAUTH:
403 case IW_MLME_DISASSOC:
404 err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);
405 break;
406 default:
407 err = -EOPNOTSUPP;
408 break;
409 }
410 wdev_unlock(wdev);
411
412 return err;
413}
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
8#include <linux/export.h>
9#include <linux/etherdevice.h>
10#include <linux/if_arp.h>
11#include <linux/slab.h>
12#include <net/cfg80211.h>
13#include <net/cfg80211-wext.h>
14#include "wext-compat.h"
15#include "nl80211.h"
16
17int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
18 struct wireless_dev *wdev)
19{
20 struct cfg80211_cached_keys *ck = NULL;
21 const u8 *prev_bssid = NULL;
22 int err, i;
23
24 ASSERT_RTNL();
25 ASSERT_WDEV_LOCK(wdev);
26
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;
32
33 /* Use default background scan period */
34 wdev->wext.connect.bg_scan_period = -1;
35
36 if (wdev->wext.keys) {
37 wdev->wext.keys->def = wdev->wext.default_key;
38 wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
39 if (wdev->wext.default_key != -1)
40 wdev->wext.connect.privacy = true;
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 }
53
54 if (wdev->wext.prev_bssid_valid)
55 prev_bssid = wdev->wext.prev_bssid;
56
57 err = cfg80211_connect(rdev, wdev->netdev,
58 &wdev->wext.connect, ck, prev_bssid);
59 if (err)
60 kzfree(ck);
61
62 return err;
63}
64
65int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
66 struct iw_request_info *info,
67 struct iw_freq *wextfreq, char *extra)
68{
69 struct wireless_dev *wdev = dev->ieee80211_ptr;
70 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
71 struct ieee80211_channel *chan = NULL;
72 int err, freq;
73
74 /* call only for station! */
75 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
76 return -EINVAL;
77
78 freq = cfg80211_wext_freq(wextfreq);
79 if (freq < 0)
80 return freq;
81
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 }
89
90 wdev_lock(wdev);
91
92 if (wdev->conn) {
93 bool event = true;
94
95 if (wdev->wext.connect.channel == chan) {
96 err = 0;
97 goto out;
98 }
99
100 /* if SSID set, we'll try right again, avoid event */
101 if (wdev->wext.connect.ssid_len)
102 event = false;
103 err = cfg80211_disconnect(rdev, dev,
104 WLAN_REASON_DEAUTH_LEAVING, event);
105 if (err)
106 goto out;
107 }
108
109
110 wdev->wext.connect.channel = chan;
111
112 /*
113 * SSID is not set, we just want to switch monitor channel,
114 * this is really just backward compatibility, if the SSID
115 * is set then we use the channel to select the BSS to use
116 * to connect to instead. If we were connected on another
117 * channel we disconnected above and reconnect below.
118 */
119 if (chan && !wdev->wext.connect.ssid_len) {
120 struct cfg80211_chan_def chandef = {
121 .width = NL80211_CHAN_WIDTH_20_NOHT,
122 .center_freq1 = freq,
123 };
124
125 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
126 if (chandef.chan)
127 err = cfg80211_set_monitor_channel(rdev, &chandef);
128 else
129 err = -EINVAL;
130 goto out;
131 }
132
133 err = cfg80211_mgd_wext_connect(rdev, wdev);
134 out:
135 wdev_unlock(wdev);
136 return err;
137}
138
139int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
140 struct iw_request_info *info,
141 struct iw_freq *freq, char *extra)
142{
143 struct wireless_dev *wdev = dev->ieee80211_ptr;
144 struct ieee80211_channel *chan = NULL;
145
146 /* call only for station! */
147 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
148 return -EINVAL;
149
150 wdev_lock(wdev);
151 if (wdev->current_bss)
152 chan = wdev->current_bss->pub.channel;
153 else if (wdev->wext.connect.channel)
154 chan = wdev->wext.connect.channel;
155 wdev_unlock(wdev);
156
157 if (chan) {
158 freq->m = chan->center_freq;
159 freq->e = 6;
160 return 0;
161 }
162
163 /* no channel if not joining */
164 return -EINVAL;
165}
166
167int cfg80211_mgd_wext_siwessid(struct net_device *dev,
168 struct iw_request_info *info,
169 struct iw_point *data, char *ssid)
170{
171 struct wireless_dev *wdev = dev->ieee80211_ptr;
172 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
173 size_t len = data->length;
174 int err;
175
176 /* call only for station! */
177 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
178 return -EINVAL;
179
180 if (!data->flags)
181 len = 0;
182
183 /* iwconfig uses nul termination in SSID.. */
184 if (len > 0 && ssid[len - 1] == '\0')
185 len--;
186
187 wdev_lock(wdev);
188
189 err = 0;
190
191 if (wdev->conn) {
192 bool event = true;
193
194 if (wdev->wext.connect.ssid && len &&
195 len == wdev->wext.connect.ssid_len &&
196 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
197 goto out;
198
199 /* if SSID set now, we'll try to connect, avoid event */
200 if (len)
201 event = false;
202 err = cfg80211_disconnect(rdev, dev,
203 WLAN_REASON_DEAUTH_LEAVING, event);
204 if (err)
205 goto out;
206 }
207
208 wdev->wext.prev_bssid_valid = false;
209 wdev->wext.connect.ssid = wdev->wext.ssid;
210 memcpy(wdev->wext.ssid, ssid, len);
211 wdev->wext.connect.ssid_len = len;
212
213 wdev->wext.connect.crypto.control_port = false;
214 wdev->wext.connect.crypto.control_port_ethertype =
215 cpu_to_be16(ETH_P_PAE);
216
217 err = cfg80211_mgd_wext_connect(rdev, wdev);
218 out:
219 wdev_unlock(wdev);
220 return err;
221}
222
223int cfg80211_mgd_wext_giwessid(struct net_device *dev,
224 struct iw_request_info *info,
225 struct iw_point *data, char *ssid)
226{
227 struct wireless_dev *wdev = dev->ieee80211_ptr;
228
229 /* call only for station! */
230 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
231 return -EINVAL;
232
233 data->flags = 0;
234
235 wdev_lock(wdev);
236 if (wdev->current_bss) {
237 const u8 *ie;
238
239 rcu_read_lock();
240 ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
241 WLAN_EID_SSID);
242 if (ie) {
243 data->flags = 1;
244 data->length = ie[1];
245 memcpy(ssid, ie + 2, data->length);
246 }
247 rcu_read_unlock();
248 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
249 data->flags = 1;
250 data->length = wdev->wext.connect.ssid_len;
251 memcpy(ssid, wdev->wext.connect.ssid, data->length);
252 }
253 wdev_unlock(wdev);
254
255 return 0;
256}
257
258int cfg80211_mgd_wext_siwap(struct net_device *dev,
259 struct iw_request_info *info,
260 struct sockaddr *ap_addr, char *extra)
261{
262 struct wireless_dev *wdev = dev->ieee80211_ptr;
263 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
264 u8 *bssid = ap_addr->sa_data;
265 int err;
266
267 /* call only for station! */
268 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
269 return -EINVAL;
270
271 if (ap_addr->sa_family != ARPHRD_ETHER)
272 return -EINVAL;
273
274 /* automatic mode */
275 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
276 bssid = NULL;
277
278 wdev_lock(wdev);
279
280 if (wdev->conn) {
281 err = 0;
282 /* both automatic */
283 if (!bssid && !wdev->wext.connect.bssid)
284 goto out;
285
286 /* fixed already - and no change */
287 if (wdev->wext.connect.bssid && bssid &&
288 ether_addr_equal(bssid, wdev->wext.connect.bssid))
289 goto out;
290
291 err = cfg80211_disconnect(rdev, dev,
292 WLAN_REASON_DEAUTH_LEAVING, false);
293 if (err)
294 goto out;
295 }
296
297 if (bssid) {
298 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
299 wdev->wext.connect.bssid = wdev->wext.bssid;
300 } else
301 wdev->wext.connect.bssid = NULL;
302
303 err = cfg80211_mgd_wext_connect(rdev, wdev);
304 out:
305 wdev_unlock(wdev);
306 return err;
307}
308
309int cfg80211_mgd_wext_giwap(struct net_device *dev,
310 struct iw_request_info *info,
311 struct sockaddr *ap_addr, char *extra)
312{
313 struct wireless_dev *wdev = dev->ieee80211_ptr;
314
315 /* call only for station! */
316 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
317 return -EINVAL;
318
319 ap_addr->sa_family = ARPHRD_ETHER;
320
321 wdev_lock(wdev);
322 if (wdev->current_bss)
323 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
324 else
325 eth_zero_addr(ap_addr->sa_data);
326 wdev_unlock(wdev);
327
328 return 0;
329}
330
331int cfg80211_wext_siwgenie(struct net_device *dev,
332 struct iw_request_info *info,
333 struct iw_point *data, char *extra)
334{
335 struct wireless_dev *wdev = dev->ieee80211_ptr;
336 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
337 u8 *ie = extra;
338 int ie_len = data->length, err;
339
340 if (wdev->iftype != NL80211_IFTYPE_STATION)
341 return -EOPNOTSUPP;
342
343 if (!ie_len)
344 ie = NULL;
345
346 wdev_lock(wdev);
347
348 /* no change */
349 err = 0;
350 if (wdev->wext.ie_len == ie_len &&
351 memcmp(wdev->wext.ie, ie, ie_len) == 0)
352 goto out;
353
354 if (ie_len) {
355 ie = kmemdup(extra, ie_len, GFP_KERNEL);
356 if (!ie) {
357 err = -ENOMEM;
358 goto out;
359 }
360 } else
361 ie = NULL;
362
363 kfree(wdev->wext.ie);
364 wdev->wext.ie = ie;
365 wdev->wext.ie_len = ie_len;
366
367 if (wdev->conn) {
368 err = cfg80211_disconnect(rdev, dev,
369 WLAN_REASON_DEAUTH_LEAVING, false);
370 if (err)
371 goto out;
372 }
373
374 /* userspace better not think we'll reconnect */
375 err = 0;
376 out:
377 wdev_unlock(wdev);
378 return err;
379}
380
381int cfg80211_wext_siwmlme(struct net_device *dev,
382 struct iw_request_info *info,
383 struct iw_point *data, char *extra)
384{
385 struct wireless_dev *wdev = dev->ieee80211_ptr;
386 struct iw_mlme *mlme = (struct iw_mlme *)extra;
387 struct cfg80211_registered_device *rdev;
388 int err;
389
390 if (!wdev)
391 return -EOPNOTSUPP;
392
393 rdev = wiphy_to_rdev(wdev->wiphy);
394
395 if (wdev->iftype != NL80211_IFTYPE_STATION)
396 return -EINVAL;
397
398 if (mlme->addr.sa_family != ARPHRD_ETHER)
399 return -EINVAL;
400
401 wdev_lock(wdev);
402 switch (mlme->cmd) {
403 case IW_MLME_DEAUTH:
404 case IW_MLME_DISASSOC:
405 err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);
406 break;
407 default:
408 err = -EOPNOTSUPP;
409 break;
410 }
411 wdev_unlock(wdev);
412
413 return err;
414}