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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_RDEV_LOCK(rdev);
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
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 kfree(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_dev(wdev->wiphy);
71 struct ieee80211_channel *chan = NULL;
72 int err, freq;
73
74
75 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
76 return -EINVAL;
77
78 freq = cfg80211_wext_freq(wdev->wiphy, 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 cfg80211_lock_rdev(rdev);
91 mutex_lock(&rdev->devlist_mtx);
92 wdev_lock(wdev);
93
94 if (wdev->sme_state != CFG80211_SME_IDLE) {
95 bool event = true;
96
97 if (wdev->wext.connect.channel == chan) {
98 err = 0;
99 goto out;
100 }
101
102
103 if (wdev->wext.connect.ssid_len)
104 event = false;
105 err = __cfg80211_disconnect(rdev, dev,
106 WLAN_REASON_DEAUTH_LEAVING, event);
107 if (err)
108 goto out;
109 }
110
111
112 wdev->wext.connect.channel = chan;
113
114
115 if (chan && !wdev->wext.connect.ssid_len) {
116 err = cfg80211_set_freq(rdev, wdev, freq, NL80211_CHAN_NO_HT);
117 goto out;
118 }
119
120 err = cfg80211_mgd_wext_connect(rdev, wdev);
121 out:
122 wdev_unlock(wdev);
123 mutex_unlock(&rdev->devlist_mtx);
124 cfg80211_unlock_rdev(rdev);
125 return err;
126}
127
128int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
129 struct iw_request_info *info,
130 struct iw_freq *freq, char *extra)
131{
132 struct wireless_dev *wdev = dev->ieee80211_ptr;
133 struct ieee80211_channel *chan = NULL;
134
135
136 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
137 return -EINVAL;
138
139 wdev_lock(wdev);
140 if (wdev->current_bss)
141 chan = wdev->current_bss->pub.channel;
142 else if (wdev->wext.connect.channel)
143 chan = wdev->wext.connect.channel;
144 wdev_unlock(wdev);
145
146 if (chan) {
147 freq->m = chan->center_freq;
148 freq->e = 6;
149 return 0;
150 }
151
152
153 return -EINVAL;
154}
155
156int cfg80211_mgd_wext_siwessid(struct net_device *dev,
157 struct iw_request_info *info,
158 struct iw_point *data, char *ssid)
159{
160 struct wireless_dev *wdev = dev->ieee80211_ptr;
161 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
162 size_t len = data->length;
163 int err;
164
165
166 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
167 return -EINVAL;
168
169 if (!data->flags)
170 len = 0;
171
172
173 if (len > 0 && ssid[len - 1] == '\0')
174 len--;
175
176 cfg80211_lock_rdev(rdev);
177 mutex_lock(&rdev->devlist_mtx);
178 wdev_lock(wdev);
179
180 err = 0;
181
182 if (wdev->sme_state != CFG80211_SME_IDLE) {
183 bool event = true;
184
185 if (wdev->wext.connect.ssid && len &&
186 len == wdev->wext.connect.ssid_len &&
187 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
188 goto out;
189
190
191 if (len)
192 event = false;
193 err = __cfg80211_disconnect(rdev, dev,
194 WLAN_REASON_DEAUTH_LEAVING, event);
195 if (err)
196 goto out;
197 }
198
199 wdev->wext.prev_bssid_valid = false;
200 wdev->wext.connect.ssid = wdev->wext.ssid;
201 memcpy(wdev->wext.ssid, ssid, len);
202 wdev->wext.connect.ssid_len = len;
203
204 wdev->wext.connect.crypto.control_port = false;
205 wdev->wext.connect.crypto.control_port_ethertype =
206 cpu_to_be16(ETH_P_PAE);
207
208 err = cfg80211_mgd_wext_connect(rdev, wdev);
209 out:
210 wdev_unlock(wdev);
211 mutex_unlock(&rdev->devlist_mtx);
212 cfg80211_unlock_rdev(rdev);
213 return err;
214}
215
216int cfg80211_mgd_wext_giwessid(struct net_device *dev,
217 struct iw_request_info *info,
218 struct iw_point *data, char *ssid)
219{
220 struct wireless_dev *wdev = dev->ieee80211_ptr;
221
222
223 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
224 return -EINVAL;
225
226 data->flags = 0;
227
228 wdev_lock(wdev);
229 if (wdev->current_bss) {
230 const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
231 WLAN_EID_SSID);
232 if (ie) {
233 data->flags = 1;
234 data->length = ie[1];
235 memcpy(ssid, ie + 2, data->length);
236 }
237 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
238 data->flags = 1;
239 data->length = wdev->wext.connect.ssid_len;
240 memcpy(ssid, wdev->wext.connect.ssid, data->length);
241 }
242 wdev_unlock(wdev);
243
244 return 0;
245}
246
247int cfg80211_mgd_wext_siwap(struct net_device *dev,
248 struct iw_request_info *info,
249 struct sockaddr *ap_addr, char *extra)
250{
251 struct wireless_dev *wdev = dev->ieee80211_ptr;
252 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
253 u8 *bssid = ap_addr->sa_data;
254 int err;
255
256
257 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
258 return -EINVAL;
259
260 if (ap_addr->sa_family != ARPHRD_ETHER)
261 return -EINVAL;
262
263
264 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
265 bssid = NULL;
266
267 cfg80211_lock_rdev(rdev);
268 mutex_lock(&rdev->devlist_mtx);
269 wdev_lock(wdev);
270
271 if (wdev->sme_state != CFG80211_SME_IDLE) {
272 err = 0;
273
274 if (!bssid && !wdev->wext.connect.bssid)
275 goto out;
276
277
278 if (wdev->wext.connect.bssid && bssid &&
279 compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
280 goto out;
281
282 err = __cfg80211_disconnect(rdev, dev,
283 WLAN_REASON_DEAUTH_LEAVING, false);
284 if (err)
285 goto out;
286 }
287
288 if (bssid) {
289 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
290 wdev->wext.connect.bssid = wdev->wext.bssid;
291 } else
292 wdev->wext.connect.bssid = NULL;
293
294 err = cfg80211_mgd_wext_connect(rdev, wdev);
295 out:
296 wdev_unlock(wdev);
297 mutex_unlock(&rdev->devlist_mtx);
298 cfg80211_unlock_rdev(rdev);
299 return err;
300}
301
302int cfg80211_mgd_wext_giwap(struct net_device *dev,
303 struct iw_request_info *info,
304 struct sockaddr *ap_addr, char *extra)
305{
306 struct wireless_dev *wdev = dev->ieee80211_ptr;
307
308
309 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
310 return -EINVAL;
311
312 ap_addr->sa_family = ARPHRD_ETHER;
313
314 wdev_lock(wdev);
315 if (wdev->current_bss)
316 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
317 else
318 memset(ap_addr->sa_data, 0, ETH_ALEN);
319 wdev_unlock(wdev);
320
321 return 0;
322}
323
324int cfg80211_wext_siwgenie(struct net_device *dev,
325 struct iw_request_info *info,
326 struct iw_point *data, char *extra)
327{
328 struct wireless_dev *wdev = dev->ieee80211_ptr;
329 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
330 u8 *ie = extra;
331 int ie_len = data->length, err;
332
333 if (wdev->iftype != NL80211_IFTYPE_STATION)
334 return -EOPNOTSUPP;
335
336 if (!ie_len)
337 ie = NULL;
338
339 wdev_lock(wdev);
340
341
342 err = 0;
343 if (wdev->wext.ie_len == ie_len &&
344 memcmp(wdev->wext.ie, ie, ie_len) == 0)
345 goto out;
346
347 if (ie_len) {
348 ie = kmemdup(extra, ie_len, GFP_KERNEL);
349 if (!ie) {
350 err = -ENOMEM;
351 goto out;
352 }
353 } else
354 ie = NULL;
355
356 kfree(wdev->wext.ie);
357 wdev->wext.ie = ie;
358 wdev->wext.ie_len = ie_len;
359
360 if (wdev->sme_state != CFG80211_SME_IDLE) {
361 err = __cfg80211_disconnect(rdev, dev,
362 WLAN_REASON_DEAUTH_LEAVING, false);
363 if (err)
364 goto out;
365 }
366
367
368 err = 0;
369 out:
370 wdev_unlock(wdev);
371 return err;
372}
373
374int cfg80211_wext_siwmlme(struct net_device *dev,
375 struct iw_request_info *info,
376 struct iw_point *data, char *extra)
377{
378 struct wireless_dev *wdev = dev->ieee80211_ptr;
379 struct iw_mlme *mlme = (struct iw_mlme *)extra;
380 struct cfg80211_registered_device *rdev;
381 int err;
382
383 if (!wdev)
384 return -EOPNOTSUPP;
385
386 rdev = wiphy_to_dev(wdev->wiphy);
387
388 if (wdev->iftype != NL80211_IFTYPE_STATION)
389 return -EINVAL;
390
391 if (mlme->addr.sa_family != ARPHRD_ETHER)
392 return -EINVAL;
393
394 wdev_lock(wdev);
395 switch (mlme->cmd) {
396 case IW_MLME_DEAUTH:
397 case IW_MLME_DISASSOC:
398 err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
399 true);
400 break;
401 default:
402 err = -EOPNOTSUPP;
403 break;
404 }
405 wdev_unlock(wdev);
406
407 return err;
408}
409
