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8#include <linux/etherdevice.h>
9#include <linux/if_arp.h>
10#include <linux/slab.h>
11#include <net/cfg80211.h>
12#include "wext-compat.h"
13#include "nl80211.h"
14
15int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
16 struct wireless_dev *wdev)
17{
18 struct cfg80211_cached_keys *ck = NULL;
19 const u8 *prev_bssid = NULL;
20 int err, i;
21
22 ASSERT_RDEV_LOCK(rdev);
23 ASSERT_WDEV_LOCK(wdev);
24
25 if (!netif_running(wdev->netdev))
26 return 0;
27
28 wdev->wext.connect.ie = wdev->wext.ie;
29 wdev->wext.connect.ie_len = wdev->wext.ie_len;
30
31 if (wdev->wext.keys) {
32 wdev->wext.keys->def = wdev->wext.default_key;
33 wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
34 if (wdev->wext.default_key != -1)
35 wdev->wext.connect.privacy = true;
36 }
37
38 if (!wdev->wext.connect.ssid_len)
39 return 0;
40
41 if (wdev->wext.keys) {
42 ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
43 if (!ck)
44 return -ENOMEM;
45 for (i = 0; i < 6; i++)
46 ck->params[i].key = ck->data[i];
47 }
48
49 if (wdev->wext.prev_bssid_valid)
50 prev_bssid = wdev->wext.prev_bssid;
51
52 err = __cfg80211_connect(rdev, wdev->netdev,
53 &wdev->wext.connect, ck, prev_bssid);
54 if (err)
55 kfree(ck);
56
57 return err;
58}
59
60int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
61 struct iw_request_info *info,
62 struct iw_freq *wextfreq, char *extra)
63{
64 struct wireless_dev *wdev = dev->ieee80211_ptr;
65 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
66 struct ieee80211_channel *chan = NULL;
67 int err, freq;
68
69
70 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
71 return -EINVAL;
72
73 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
74 if (freq < 0)
75 return freq;
76
77 if (freq) {
78 chan = ieee80211_get_channel(wdev->wiphy, freq);
79 if (!chan)
80 return -EINVAL;
81 if (chan->flags & IEEE80211_CHAN_DISABLED)
82 return -EINVAL;
83 }
84
85 cfg80211_lock_rdev(rdev);
86 mutex_lock(&rdev->devlist_mtx);
87 wdev_lock(wdev);
88
89 if (wdev->sme_state != CFG80211_SME_IDLE) {
90 bool event = true;
91
92 if (wdev->wext.connect.channel == chan) {
93 err = 0;
94 goto out;
95 }
96
97
98 if (wdev->wext.connect.ssid_len)
99 event = false;
100 err = __cfg80211_disconnect(rdev, dev,
101 WLAN_REASON_DEAUTH_LEAVING, event);
102 if (err)
103 goto out;
104 }
105
106
107 wdev->wext.connect.channel = chan;
108
109
110 if (chan && !wdev->wext.connect.ssid_len) {
111 err = cfg80211_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT);
112 goto out;
113 }
114
115 err = cfg80211_mgd_wext_connect(rdev, wdev);
116 out:
117 wdev_unlock(wdev);
118 mutex_unlock(&rdev->devlist_mtx);
119 cfg80211_unlock_rdev(rdev);
120 return err;
121}
122
123int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
124 struct iw_request_info *info,
125 struct iw_freq *freq, char *extra)
126{
127 struct wireless_dev *wdev = dev->ieee80211_ptr;
128 struct ieee80211_channel *chan = NULL;
129
130
131 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
132 return -EINVAL;
133
134 wdev_lock(wdev);
135 if (wdev->current_bss)
136 chan = wdev->current_bss->pub.channel;
137 else if (wdev->wext.connect.channel)
138 chan = wdev->wext.connect.channel;
139 wdev_unlock(wdev);
140
141 if (chan) {
142 freq->m = chan->center_freq;
143 freq->e = 6;
144 return 0;
145 }
146
147
148 return -EINVAL;
149}
150
151int cfg80211_mgd_wext_siwessid(struct net_device *dev,
152 struct iw_request_info *info,
153 struct iw_point *data, char *ssid)
154{
155 struct wireless_dev *wdev = dev->ieee80211_ptr;
156 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
157 size_t len = data->length;
158 int err;
159
160
161 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
162 return -EINVAL;
163
164 if (!data->flags)
165 len = 0;
166
167
168 if (len > 0 && ssid[len - 1] == '\0')
169 len--;
170
171 cfg80211_lock_rdev(rdev);
172 mutex_lock(&rdev->devlist_mtx);
173 wdev_lock(wdev);
174
175 err = 0;
176
177 if (wdev->sme_state != CFG80211_SME_IDLE) {
178 bool event = true;
179
180 if (wdev->wext.connect.ssid && len &&
181 len == wdev->wext.connect.ssid_len &&
182 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
183 goto out;
184
185
186 if (len)
187 event = false;
188 err = __cfg80211_disconnect(rdev, dev,
189 WLAN_REASON_DEAUTH_LEAVING, event);
190 if (err)
191 goto out;
192 }
193
194 wdev->wext.prev_bssid_valid = false;
195 wdev->wext.connect.ssid = wdev->wext.ssid;
196 memcpy(wdev->wext.ssid, ssid, len);
197 wdev->wext.connect.ssid_len = len;
198
199 wdev->wext.connect.crypto.control_port = false;
200 wdev->wext.connect.crypto.control_port_ethertype =
201 cpu_to_be16(ETH_P_PAE);
202
203 err = cfg80211_mgd_wext_connect(rdev, wdev);
204 out:
205 wdev_unlock(wdev);
206 mutex_unlock(&rdev->devlist_mtx);
207 cfg80211_unlock_rdev(rdev);
208 return err;
209}
210
211int cfg80211_mgd_wext_giwessid(struct net_device *dev,
212 struct iw_request_info *info,
213 struct iw_point *data, char *ssid)
214{
215 struct wireless_dev *wdev = dev->ieee80211_ptr;
216
217
218 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
219 return -EINVAL;
220
221 data->flags = 0;
222
223 wdev_lock(wdev);
224 if (wdev->current_bss) {
225 const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
226 WLAN_EID_SSID);
227 if (ie) {
228 data->flags = 1;
229 data->length = ie[1];
230 memcpy(ssid, ie + 2, data->length);
231 }
232 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
233 data->flags = 1;
234 data->length = wdev->wext.connect.ssid_len;
235 memcpy(ssid, wdev->wext.connect.ssid, data->length);
236 }
237 wdev_unlock(wdev);
238
239 return 0;
240}
241
242int cfg80211_mgd_wext_siwap(struct net_device *dev,
243 struct iw_request_info *info,
244 struct sockaddr *ap_addr, char *extra)
245{
246 struct wireless_dev *wdev = dev->ieee80211_ptr;
247 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
248 u8 *bssid = ap_addr->sa_data;
249 int err;
250
251
252 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
253 return -EINVAL;
254
255 if (ap_addr->sa_family != ARPHRD_ETHER)
256 return -EINVAL;
257
258
259 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
260 bssid = NULL;
261
262 cfg80211_lock_rdev(rdev);
263 mutex_lock(&rdev->devlist_mtx);
264 wdev_lock(wdev);
265
266 if (wdev->sme_state != CFG80211_SME_IDLE) {
267 err = 0;
268
269 if (!bssid && !wdev->wext.connect.bssid)
270 goto out;
271
272
273 if (wdev->wext.connect.bssid && bssid &&
274 compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
275 goto out;
276
277 err = __cfg80211_disconnect(rdev, dev,
278 WLAN_REASON_DEAUTH_LEAVING, false);
279 if (err)
280 goto out;
281 }
282
283 if (bssid) {
284 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
285 wdev->wext.connect.bssid = wdev->wext.bssid;
286 } else
287 wdev->wext.connect.bssid = NULL;
288
289 err = cfg80211_mgd_wext_connect(rdev, wdev);
290 out:
291 wdev_unlock(wdev);
292 mutex_unlock(&rdev->devlist_mtx);
293 cfg80211_unlock_rdev(rdev);
294 return err;
295}
296
297int cfg80211_mgd_wext_giwap(struct net_device *dev,
298 struct iw_request_info *info,
299 struct sockaddr *ap_addr, char *extra)
300{
301 struct wireless_dev *wdev = dev->ieee80211_ptr;
302
303
304 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
305 return -EINVAL;
306
307 ap_addr->sa_family = ARPHRD_ETHER;
308
309 wdev_lock(wdev);
310 if (wdev->current_bss)
311 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
312 else
313 memset(ap_addr->sa_data, 0, ETH_ALEN);
314 wdev_unlock(wdev);
315
316 return 0;
317}
318
319int cfg80211_wext_siwgenie(struct net_device *dev,
320 struct iw_request_info *info,
321 struct iw_point *data, char *extra)
322{
323 struct wireless_dev *wdev = dev->ieee80211_ptr;
324 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
325 u8 *ie = extra;
326 int ie_len = data->length, err;
327
328 if (wdev->iftype != NL80211_IFTYPE_STATION)
329 return -EOPNOTSUPP;
330
331 if (!ie_len)
332 ie = NULL;
333
334 wdev_lock(wdev);
335
336
337 err = 0;
338 if (wdev->wext.ie_len == ie_len &&
339 memcmp(wdev->wext.ie, ie, ie_len) == 0)
340 goto out;
341
342 if (ie_len) {
343 ie = kmemdup(extra, ie_len, GFP_KERNEL);
344 if (!ie) {
345 err = -ENOMEM;
346 goto out;
347 }
348 } else
349 ie = NULL;
350
351 kfree(wdev->wext.ie);
352 wdev->wext.ie = ie;
353 wdev->wext.ie_len = ie_len;
354
355 if (wdev->sme_state != CFG80211_SME_IDLE) {
356 err = __cfg80211_disconnect(rdev, dev,
357 WLAN_REASON_DEAUTH_LEAVING, false);
358 if (err)
359 goto out;
360 }
361
362
363 err = 0;
364 out:
365 wdev_unlock(wdev);
366 return err;
367}
368EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
369
370int cfg80211_wext_siwmlme(struct net_device *dev,
371 struct iw_request_info *info,
372 struct iw_point *data, char *extra)
373{
374 struct wireless_dev *wdev = dev->ieee80211_ptr;
375 struct iw_mlme *mlme = (struct iw_mlme *)extra;
376 struct cfg80211_registered_device *rdev;
377 int err;
378
379 if (!wdev)
380 return -EOPNOTSUPP;
381
382 rdev = wiphy_to_dev(wdev->wiphy);
383
384 if (wdev->iftype != NL80211_IFTYPE_STATION)
385 return -EINVAL;
386
387 if (mlme->addr.sa_family != ARPHRD_ETHER)
388 return -EINVAL;
389
390 wdev_lock(wdev);
391 switch (mlme->cmd) {
392 case IW_MLME_DEAUTH:
393 case IW_MLME_DISASSOC:
394 err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
395 true);
396 break;
397 default:
398 err = -EOPNOTSUPP;
399 break;
400 }
401 wdev_unlock(wdev);
402
403 return err;
404}
405EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
406
