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;
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 if (wdev->wext.default_key != -1)
39 wdev->wext.connect.privacy = true;
42 if (!wdev->wext.connect.ssid_len)
45 if (wdev->wext.keys && wdev->wext.keys->def != -1) {
46 ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
49 for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
50 ck->params[i].key = ck->data[i];
53 if (wdev->wext.prev_bssid_valid)
54 prev_bssid = wdev->wext.prev_bssid;
56 err = cfg80211_connect(rdev, wdev->netdev,
57 &wdev->wext.connect, ck, prev_bssid);
64 int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
65 struct iw_request_info *info,
66 struct iw_freq *wextfreq, char *extra)
68 struct wireless_dev *wdev = dev->ieee80211_ptr;
69 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
70 struct ieee80211_channel *chan = NULL;
73 /* call only for station! */
74 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
77 freq = cfg80211_wext_freq(wextfreq);
82 chan = ieee80211_get_channel(wdev->wiphy, freq);
85 if (chan->flags & IEEE80211_CHAN_DISABLED)
94 if (wdev->wext.connect.channel == chan) {
99 /* if SSID set, we'll try right again, avoid event */
100 if (wdev->wext.connect.ssid_len)
102 err = cfg80211_disconnect(rdev, dev,
103 WLAN_REASON_DEAUTH_LEAVING, event);
109 wdev->wext.connect.channel = chan;
112 * SSID is not set, we just want to switch monitor channel,
113 * this is really just backward compatibility, if the SSID
114 * is set then we use the channel to select the BSS to use
115 * to connect to instead. If we were connected on another
116 * channel we disconnected above and reconnect below.
118 if (chan && !wdev->wext.connect.ssid_len) {
119 struct cfg80211_chan_def chandef = {
120 .width = NL80211_CHAN_WIDTH_20_NOHT,
121 .center_freq1 = freq,
124 chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
126 err = cfg80211_set_monitor_channel(rdev, &chandef);
132 err = cfg80211_mgd_wext_connect(rdev, wdev);
138 int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
139 struct iw_request_info *info,
140 struct iw_freq *freq, char *extra)
142 struct wireless_dev *wdev = dev->ieee80211_ptr;
143 struct ieee80211_channel *chan = NULL;
145 /* call only for station! */
146 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
150 if (wdev->current_bss)
151 chan = wdev->current_bss->pub.channel;
152 else if (wdev->wext.connect.channel)
153 chan = wdev->wext.connect.channel;
157 freq->m = chan->center_freq;
162 /* no channel if not joining */
166 int cfg80211_mgd_wext_siwessid(struct net_device *dev,
167 struct iw_request_info *info,
168 struct iw_point *data, char *ssid)
170 struct wireless_dev *wdev = dev->ieee80211_ptr;
171 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
172 size_t len = data->length;
175 /* call only for station! */
176 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
182 /* iwconfig uses nul termination in SSID.. */
183 if (len > 0 && ssid[len - 1] == '\0')
193 if (wdev->wext.connect.ssid && len &&
194 len == wdev->wext.connect.ssid_len &&
195 memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
198 /* if SSID set now, we'll try to connect, avoid event */
201 err = cfg80211_disconnect(rdev, dev,
202 WLAN_REASON_DEAUTH_LEAVING, event);
207 wdev->wext.prev_bssid_valid = false;
208 wdev->wext.connect.ssid = wdev->wext.ssid;
209 memcpy(wdev->wext.ssid, ssid, len);
210 wdev->wext.connect.ssid_len = len;
212 wdev->wext.connect.crypto.control_port = false;
213 wdev->wext.connect.crypto.control_port_ethertype =
214 cpu_to_be16(ETH_P_PAE);
216 err = cfg80211_mgd_wext_connect(rdev, wdev);
222 int cfg80211_mgd_wext_giwessid(struct net_device *dev,
223 struct iw_request_info *info,
224 struct iw_point *data, char *ssid)
226 struct wireless_dev *wdev = dev->ieee80211_ptr;
228 /* call only for station! */
229 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
235 if (wdev->current_bss) {
239 ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
243 data->length = ie[1];
244 memcpy(ssid, ie + 2, data->length);
247 } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
249 data->length = wdev->wext.connect.ssid_len;
250 memcpy(ssid, wdev->wext.connect.ssid, data->length);
257 int cfg80211_mgd_wext_siwap(struct net_device *dev,
258 struct iw_request_info *info,
259 struct sockaddr *ap_addr, char *extra)
261 struct wireless_dev *wdev = dev->ieee80211_ptr;
262 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
263 u8 *bssid = ap_addr->sa_data;
266 /* call only for station! */
267 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
270 if (ap_addr->sa_family != ARPHRD_ETHER)
274 if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
282 if (!bssid && !wdev->wext.connect.bssid)
285 /* fixed already - and no change */
286 if (wdev->wext.connect.bssid && bssid &&
287 ether_addr_equal(bssid, wdev->wext.connect.bssid))
290 err = cfg80211_disconnect(rdev, dev,
291 WLAN_REASON_DEAUTH_LEAVING, false);
297 memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
298 wdev->wext.connect.bssid = wdev->wext.bssid;
300 wdev->wext.connect.bssid = NULL;
302 err = cfg80211_mgd_wext_connect(rdev, wdev);
308 int cfg80211_mgd_wext_giwap(struct net_device *dev,
309 struct iw_request_info *info,
310 struct sockaddr *ap_addr, char *extra)
312 struct wireless_dev *wdev = dev->ieee80211_ptr;
314 /* call only for station! */
315 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
318 ap_addr->sa_family = ARPHRD_ETHER;
321 if (wdev->current_bss)
322 memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
324 eth_zero_addr(ap_addr->sa_data);
330 int cfg80211_wext_siwgenie(struct net_device *dev,
331 struct iw_request_info *info,
332 struct iw_point *data, char *extra)
334 struct wireless_dev *wdev = dev->ieee80211_ptr;
335 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
337 int ie_len = data->length, err;
339 if (wdev->iftype != NL80211_IFTYPE_STATION)
349 if (wdev->wext.ie_len == ie_len &&
350 memcmp(wdev->wext.ie, ie, ie_len) == 0)
354 ie = kmemdup(extra, ie_len, GFP_KERNEL);
362 kfree(wdev->wext.ie);
364 wdev->wext.ie_len = ie_len;
367 err = cfg80211_disconnect(rdev, dev,
368 WLAN_REASON_DEAUTH_LEAVING, false);
373 /* userspace better not think we'll reconnect */
380 int cfg80211_wext_siwmlme(struct net_device *dev,
381 struct iw_request_info *info,
382 struct iw_point *data, char *extra)
384 struct wireless_dev *wdev = dev->ieee80211_ptr;
385 struct iw_mlme *mlme = (struct iw_mlme *)extra;
386 struct cfg80211_registered_device *rdev;
392 rdev = wiphy_to_rdev(wdev->wiphy);
394 if (wdev->iftype != NL80211_IFTYPE_STATION)
397 if (mlme->addr.sa_family != ARPHRD_ETHER)
403 case IW_MLME_DISASSOC:
404 err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);