2 * cfg80211 wext compat for managed mode.
4 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright (C) 2009 Intel Corporation. All rights reserved.
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"
17 int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
18 struct wireless_dev *wdev)
20 struct cfg80211_cached_keys *ck = NULL;
21 const u8 *prev_bssid = NULL;
24 ASSERT_RDEV_LOCK(rdev);
25 ASSERT_WDEV_LOCK(wdev);
27 if (!netif_running(wdev->netdev))
30 wdev->wext.connect.ie = wdev->wext.ie;
31 wdev->wext.connect.ie_len = wdev->wext.ie_len;
33 /* Use default background scan period */
34 wdev->wext.connect.bg_scan_period = -1;
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;
43 if (!wdev->wext.connect.ssid_len)
46 if (wdev->wext.keys) {
47 ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
50 for (i = 0; i < 6; i++)
51 ck->params[i].key = ck->data[i];
54 if (wdev->wext.prev_bssid_valid)
55 prev_bssid = wdev->wext.prev_bssid;
57 err = __cfg80211_connect(rdev, wdev->netdev,
58 &wdev->wext.connect, ck, prev_bssid);
65 int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
66 struct iw_request_info *info,
67 struct iw_freq *wextfreq, char *extra)
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;
74 /* call only for station! */
75 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
78 freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
83 chan = ieee80211_get_channel(wdev->wiphy, freq);
86 if (chan->flags & IEEE80211_CHAN_DISABLED)
90 cfg80211_lock_rdev(rdev);
91 mutex_lock(&rdev->devlist_mtx);
94 if (wdev->sme_state != CFG80211_SME_IDLE) {
97 if (wdev->wext.connect.channel == chan) {
102 /* if SSID set, we'll try right again, avoid event */
103 if (wdev->wext.connect.ssid_len)
105 err = __cfg80211_disconnect(rdev, dev,
106 WLAN_REASON_DEAUTH_LEAVING, event);
112 wdev->wext.connect.channel = chan;
115 * SSID is not set, we just want to switch monitor channel,
116 * this is really just backward compatibility, if the SSID
117 * is set then we use the channel to select the BSS to use
118 * to connect to instead. If we were connected on another
119 * channel we disconnected above and reconnect below.
121 if (chan && !wdev->wext.connect.ssid_len) {
122 struct cfg80211_chan_def chandef = {
123 .width = NL80211_CHAN_WIDTH_20_NOHT,
124 .center_freq1 = freq,
127 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
129 err = cfg80211_set_monitor_channel(rdev, &chandef);
135 err = cfg80211_mgd_wext_connect(rdev, wdev);
138 mutex_unlock(&rdev->devlist_mtx);
139 cfg80211_unlock_rdev(rdev);
143 int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
144 struct iw_request_info *info,
145 struct iw_freq *freq, char *extra)
147 struct wireless_dev *wdev = dev->ieee80211_ptr;
148 struct ieee80211_channel *chan = NULL;
150 /* call only for station! */
151 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
155 if (wdev->current_bss)
156 chan = wdev->current_bss->pub.channel;
157 else if (wdev->wext.connect.channel)
158 chan = wdev->wext.connect.channel;
162 freq->m = chan->center_freq;
167 /* no channel if not joining */
171 int cfg80211_mgd_wext_siwessid(struct net_device *dev,
172 struct iw_request_info *info,
173 struct iw_point *data, char *ssid)
175 struct wireless_dev *wdev = dev->ieee80211_ptr;
176 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
177 size_t len = data->length;
180 /* call only for station! */
181 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
187 /* iwconfig uses nul termination in SSID.. */
188 if (len > 0 && ssid[len - 1] == '\0')
191 cfg80211_lock_rdev(rdev);
192 mutex_lock(&rdev->devlist_mtx);
197 if (wdev->sme_state != CFG80211_SME_IDLE) {
200 if (wdev->wext.connect.ssid && len &&
201 len == wdev->wext.connect.ssid_len &&
202 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
205 /* if SSID set now, we'll try to connect, avoid event */
208 err = __cfg80211_disconnect(rdev, dev,
209 WLAN_REASON_DEAUTH_LEAVING, event);
214 wdev->wext.prev_bssid_valid = false;
215 wdev->wext.connect.ssid = wdev->wext.ssid;
216 memcpy(wdev->wext.ssid, ssid, len);
217 wdev->wext.connect.ssid_len = len;
219 wdev->wext.connect.crypto.control_port = false;
220 wdev->wext.connect.crypto.control_port_ethertype =
221 cpu_to_be16(ETH_P_PAE);
223 err = cfg80211_mgd_wext_connect(rdev, wdev);
226 mutex_unlock(&rdev->devlist_mtx);
227 cfg80211_unlock_rdev(rdev);
231 int cfg80211_mgd_wext_giwessid(struct net_device *dev,
232 struct iw_request_info *info,
233 struct iw_point *data, char *ssid)
235 struct wireless_dev *wdev = dev->ieee80211_ptr;
237 /* call only for station! */
238 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
244 if (wdev->current_bss) {
248 ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
252 data->length = ie[1];
253 memcpy(ssid, ie + 2, data->length);
256 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
258 data->length = wdev->wext.connect.ssid_len;
259 memcpy(ssid, wdev->wext.connect.ssid, data->length);
266 int cfg80211_mgd_wext_siwap(struct net_device *dev,
267 struct iw_request_info *info,
268 struct sockaddr *ap_addr, char *extra)
270 struct wireless_dev *wdev = dev->ieee80211_ptr;
271 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
272 u8 *bssid = ap_addr->sa_data;
275 /* call only for station! */
276 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
279 if (ap_addr->sa_family != ARPHRD_ETHER)
283 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
286 cfg80211_lock_rdev(rdev);
287 mutex_lock(&rdev->devlist_mtx);
290 if (wdev->sme_state != CFG80211_SME_IDLE) {
293 if (!bssid && !wdev->wext.connect.bssid)
296 /* fixed already - and no change */
297 if (wdev->wext.connect.bssid && bssid &&
298 ether_addr_equal(bssid, wdev->wext.connect.bssid))
301 err = __cfg80211_disconnect(rdev, dev,
302 WLAN_REASON_DEAUTH_LEAVING, false);
308 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
309 wdev->wext.connect.bssid = wdev->wext.bssid;
311 wdev->wext.connect.bssid = NULL;
313 err = cfg80211_mgd_wext_connect(rdev, wdev);
316 mutex_unlock(&rdev->devlist_mtx);
317 cfg80211_unlock_rdev(rdev);
321 int cfg80211_mgd_wext_giwap(struct net_device *dev,
322 struct iw_request_info *info,
323 struct sockaddr *ap_addr, char *extra)
325 struct wireless_dev *wdev = dev->ieee80211_ptr;
327 /* call only for station! */
328 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
331 ap_addr->sa_family = ARPHRD_ETHER;
334 if (wdev->current_bss)
335 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
337 memset(ap_addr->sa_data, 0, ETH_ALEN);
343 int cfg80211_wext_siwgenie(struct net_device *dev,
344 struct iw_request_info *info,
345 struct iw_point *data, char *extra)
347 struct wireless_dev *wdev = dev->ieee80211_ptr;
348 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
350 int ie_len = data->length, err;
352 if (wdev->iftype != NL80211_IFTYPE_STATION)
362 if (wdev->wext.ie_len == ie_len &&
363 memcmp(wdev->wext.ie, ie, ie_len) == 0)
367 ie = kmemdup(extra, ie_len, GFP_KERNEL);
375 kfree(wdev->wext.ie);
377 wdev->wext.ie_len = ie_len;
379 if (wdev->sme_state != CFG80211_SME_IDLE) {
380 err = __cfg80211_disconnect(rdev, dev,
381 WLAN_REASON_DEAUTH_LEAVING, false);
386 /* userspace better not think we'll reconnect */
393 int cfg80211_wext_siwmlme(struct net_device *dev,
394 struct iw_request_info *info,
395 struct iw_point *data, char *extra)
397 struct wireless_dev *wdev = dev->ieee80211_ptr;
398 struct iw_mlme *mlme = (struct iw_mlme *)extra;
399 struct cfg80211_registered_device *rdev;
405 rdev = wiphy_to_dev(wdev->wiphy);
407 if (wdev->iftype != NL80211_IFTYPE_STATION)
410 if (mlme->addr.sa_family != ARPHRD_ETHER)
416 case IW_MLME_DISASSOC:
417 err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,