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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 | ||
8 | #include <linux/etherdevice.h> | |
9 | #include <linux/if_arp.h> | |
10 | #include <net/cfg80211.h> | |
11 | #include "nl80211.h" | |
12 | ||
13 | static 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 | ||
33 | int 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 */ | |
82 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwfreq); | |
83 | ||
84 | int 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 */ | |
110 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwfreq); | |
111 | ||
112 | int 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 */ | |
157 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwessid); | |
158 | ||
159 | int 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 */ | |
185 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwessid); | |
186 | ||
187 | int 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 */ | |
232 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_siwap); | |
233 | ||
234 | int 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 */ | |
256 | EXPORT_SYMBOL_GPL(cfg80211_mgd_wext_giwap); | |
257 | ||
258 | int 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 | } | |
299 | EXPORT_SYMBOL_GPL(cfg80211_wext_siwgenie); | |
300 | ||
301 | int 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 | } | |
329 | EXPORT_SYMBOL_GPL(cfg80211_wext_siwmlme); |