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-rw-r--r--net/wireless/wext-sme.c329
1 files changed, 329 insertions, 0 deletions
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
new file mode 100644
index 000000000000..3b531d572b69
--- /dev/null
+++ b/net/wireless/wext-sme.c
@@ -0,0 +1,329 @@
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/etherdevice.h>
9#include <linux/if_arp.h>
10#include <net/cfg80211.h>
11#include "nl80211.h"
12
13static int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
14 struct wireless_dev *wdev)
15{
16 int err;
17
18 if (!netif_running(wdev->netdev))
19 return 0;
20
21 wdev->wext.connect.ie = wdev->wext.ie;
22 wdev->wext.connect.ie_len = wdev->wext.ie_len;
23 wdev->wext.connect.privacy = wdev->wext.default_key != -1;
24
25 err = 0;
26 if (wdev->wext.connect.ssid_len != 0)
27 err = cfg80211_connect(rdev, wdev->netdev,
28 &wdev->wext.connect);
29
30 return err;
31}
32
33int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
34 struct iw_request_info *info,
35 struct iw_freq *freq, char *extra)
36{
37 struct wireless_dev *wdev = dev->ieee80211_ptr;
38 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
39 struct ieee80211_channel *chan;
40 int err;
41
42 /* call only for station! */
43 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
44 return -EINVAL;
45
46 chan = cfg80211_wext_freq(wdev->wiphy, freq);
47 if (chan && IS_ERR(chan))
48 return PTR_ERR(chan);
49
50 if (chan && (chan->flags & IEEE80211_CHAN_DISABLED))
51 return -EINVAL;
52
53 if (wdev->wext.connect.channel == chan)
54 return 0;
55
56 if (wdev->sme_state != CFG80211_SME_IDLE) {
57 bool event = true;
58 /* if SSID set, we'll try right again, avoid event */
59 if (wdev->wext.connect.ssid_len)
60 event = false;
61 err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
62 dev, WLAN_REASON_DEAUTH_LEAVING,
63 event);
64 if (err)
65 return err;
66 }
67
68 wdev->wext.connect.channel = chan;
69
70 /* SSID is not set, we just want to switch channel */
71 if (wdev->wext.connect.ssid_len && chan) {
72 if (!rdev->ops->set_channel)
73 return -EOPNOTSUPP;
74
75 return rdev->ops->set_channel(wdev->wiphy, chan,
76 NL80211_CHAN_NO_HT);
77 }
78
79 return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
80}
81/* temporary symbol - mark GPL - in the future the handler won't be */
82EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwfreq);
83
84int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
85 struct iw_request_info *info,
86 struct iw_freq *freq, char *extra)
87{
88 struct wireless_dev *wdev = dev->ieee80211_ptr;
89 struct ieee80211_channel *chan = NULL;
90
91 /* call only for station! */
92 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
93 return -EINVAL;
94
95 if (wdev->current_bss)
96 chan = wdev->current_bss->channel;
97 else if (wdev->wext.connect.channel)
98 chan = wdev->wext.connect.channel;
99
100 if (chan) {
101 freq->m = chan->center_freq;
102 freq->e = 6;
103 return 0;
104 }
105
106 /* no channel if not joining */
107 return -EINVAL;
108}
109/* temporary symbol - mark GPL - in the future the handler won't be */
110EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwfreq);
111
112int cfg80211_mgd_wext_siwessid(struct net_device *dev,
113 struct iw_request_info *info,
114 struct iw_point *data, char *ssid)
115{
116 struct wireless_dev *wdev = dev->ieee80211_ptr;
117 size_t len = data->length;
118 int err;
119
120 /* call only for station! */
121 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
122 return -EINVAL;
123
124 if (!data->flags)
125 len = 0;
126
127 /* iwconfig uses nul termination in SSID.. */
128 if (len > 0 && ssid[len - 1] == '\0')
129 len--;
130
131 if (wdev->wext.connect.ssid && len &&
132 len == wdev->wext.connect.ssid_len &&
133 memcmp(wdev->wext.connect.ssid, ssid, len))
134 return 0;
135
136 if (wdev->sme_state != CFG80211_SME_IDLE) {
137 bool event = true;
138 /* if SSID set now, we'll try to connect, avoid event */
139 if (len)
140 event = false;
141 err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
142 dev, WLAN_REASON_DEAUTH_LEAVING,
143 event);
144 if (err)
145 return err;
146 }
147
148 wdev->wext.connect.ssid = wdev->wext.ssid;
149 memcpy(wdev->wext.ssid, ssid, len);
150 wdev->wext.connect.ssid_len = len;
151
152 wdev->wext.connect.crypto.control_port = false;
153
154 return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
155}
156/* temporary symbol - mark GPL - in the future the handler won't be */
157EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwessid);
158
159int cfg80211_mgd_wext_giwessid(struct net_device *dev,
160 struct iw_request_info *info,
161 struct iw_point *data, char *ssid)
162{
163 struct wireless_dev *wdev = dev->ieee80211_ptr;
164
165 /* call only for station! */
166 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
167 return -EINVAL;
168
169 data->flags = 0;
170
171 if (wdev->ssid_len) {
172 data->flags = 1;
173 data->length = wdev->ssid_len;
174 memcpy(ssid, wdev->ssid, data->length);
175 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
176 data->flags = 1;
177 data->length = wdev->wext.connect.ssid_len;
178 memcpy(ssid, wdev->wext.connect.ssid, data->length);
179 } else
180 data->flags = 0;
181
182 return 0;
183}
184/* temporary symbol - mark GPL - in the future the handler won't be */
185EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwessid);
186
187int cfg80211_mgd_wext_siwap(struct net_device *dev,
188 struct iw_request_info *info,
189 struct sockaddr *ap_addr, char *extra)
190{
191 struct wireless_dev *wdev = dev->ieee80211_ptr;
192 u8 *bssid = ap_addr->sa_data;
193 int err;
194
195 /* call only for station! */
196 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
197 return -EINVAL;
198
199 if (ap_addr->sa_family != ARPHRD_ETHER)
200 return -EINVAL;
201
202 /* automatic mode */
203 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
204 bssid = NULL;
205
206 /* both automatic */
207 if (!bssid && !wdev->wext.connect.bssid)
208 return 0;
209
210 /* fixed already - and no change */
211 if (wdev->wext.connect.bssid && bssid &&
212 compare_ether_addr(bssid, wdev->wext.connect.bssid) == 0)
213 return 0;
214
215 if (wdev->sme_state != CFG80211_SME_IDLE) {
216 err = cfg80211_disconnect(wiphy_to_dev(wdev->wiphy),
217 dev, WLAN_REASON_DEAUTH_LEAVING,
218 false);
219 if (err)
220 return err;
221 }
222
223 if (bssid) {
224 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
225 wdev->wext.connect.bssid = wdev->wext.bssid;
226 } else
227 wdev->wext.connect.bssid = NULL;
228
229 return cfg80211_mgd_wext_connect(wiphy_to_dev(wdev->wiphy), wdev);
230}
231/* temporary symbol - mark GPL - in the future the handler won't be */
232EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwap);
233
234int cfg80211_mgd_wext_giwap(struct net_device *dev,
235 struct iw_request_info *info,
236 struct sockaddr *ap_addr, char *extra)
237{
238 struct wireless_dev *wdev = dev->ieee80211_ptr;
239
240 /* call only for station! */
241 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
242 return -EINVAL;
243
244 ap_addr->sa_family = ARPHRD_ETHER;
245
246 if (wdev->current_bss)
247 memcpy(ap_addr->sa_data, wdev->current_bss->bssid, ETH_ALEN);
248 else if (wdev->wext.connect.bssid)
249 memcpy(ap_addr->sa_data, wdev->wext.connect.bssid, ETH_ALEN);
250 else
251 memset(ap_addr->sa_data, 0, ETH_ALEN);
252
253 return 0;
254}
255/* temporary symbol - mark GPL - in the future the handler won't be */
256EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwap);
257
258int cfg80211_wext_siwgenie(struct net_device *dev,
259 struct iw_request_info *info,
260 struct iw_point *data, char *extra)
261{
262 struct wireless_dev *wdev = dev->ieee80211_ptr;
263 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
264 u8 *ie = extra;
265 int ie_len = data->length, err;
266
267 if (wdev->iftype != NL80211_IFTYPE_STATION)
268 return -EOPNOTSUPP;
269
270 if (!ie_len)
271 ie = NULL;
272
273 /* no change */
274 if (wdev->wext.ie_len == ie_len &&
275 memcmp(wdev->wext.ie, ie, ie_len) == 0)
276 return 0;
277
278 if (ie_len) {
279 ie = kmemdup(extra, ie_len, GFP_KERNEL);
280 if (!ie)
281 return -ENOMEM;
282 } else
283 ie = NULL;
284
285 kfree(wdev->wext.ie);
286 wdev->wext.ie = ie;
287 wdev->wext.ie_len = ie_len;
288
289 if (wdev->sme_state != CFG80211_SME_IDLE) {
290 err = cfg80211_disconnect(rdev, dev,
291 WLAN_REASON_DEAUTH_LEAVING, false);
292 if (err)
293 return err;
294 }
295
296 /* userspace better not think we'll reconnect */
297 return 0;
298}
299EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie);
300
301int cfg80211_wext_siwmlme(struct net_device *dev,
302 struct iw_request_info *info,
303 struct iw_point *data, char *extra)
304{
305 struct wireless_dev *wdev = dev->ieee80211_ptr;
306 struct iw_mlme *mlme = (struct iw_mlme *)extra;
307 struct cfg80211_registered_device *rdev;
308
309 if (!wdev)
310 return -EOPNOTSUPP;
311
312 rdev = wiphy_to_dev(wdev->wiphy);
313
314 if (wdev->iftype != NL80211_IFTYPE_STATION)
315 return -EINVAL;
316
317 if (mlme->addr.sa_family != ARPHRD_ETHER)
318 return -EINVAL;
319
320 switch (mlme->cmd) {
321 case IW_MLME_DEAUTH:
322 case IW_MLME_DISASSOC:
323 return cfg80211_disconnect(rdev, dev, mlme->reason_code,
324 true);
325 default:
326 return -EOPNOTSUPP;
327 }
328}
329EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme);
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