[deliverable/linux.git] / net / wireless / wext-sme.c

/*
 * cfg80211 wext compat for managed mode.
 *
 * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
 * Copyright (C) 2009   Intel Corporation. All rights reserved.
 */

#include <linux/export.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/slab.h>
#include <net/cfg80211.h>
#include <net/cfg80211-wext.h>
#include "wext-compat.h"
#include "nl80211.h"

int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev)
{
	struct cfg80211_cached_keys *ck = NULL;
	const u8 *prev_bssid = NULL;
	int err, i;

	ASSERT_RDEV_LOCK(rdev);
	ASSERT_WDEV_LOCK(wdev);

	if (!netif_running(wdev->netdev))
		return 0;

	wdev->wext.connect.ie = wdev->wext.ie;
	wdev->wext.connect.ie_len = wdev->wext.ie_len;

	/* Use default background scan period */
	wdev->wext.connect.bg_scan_period = -1;

	if (wdev->wext.keys) {
		wdev->wext.keys->def = wdev->wext.default_key;
		wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
		if (wdev->wext.default_key != -1)
			wdev->wext.connect.privacy = true;
	}

	if (!wdev->wext.connect.ssid_len)
		return 0;

	if (wdev->wext.keys) {
		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
		if (!ck)
			return -ENOMEM;
		for (i = 0; i < 6; i++)
			ck->params[i].key = ck->data[i];
	}

	if (wdev->wext.prev_bssid_valid)
		prev_bssid = wdev->wext.prev_bssid;

	err = __cfg80211_connect(rdev, wdev->netdev,
				 &wdev->wext.connect, ck, prev_bssid);
	if (err)
		kfree(ck);

	return err;
}

int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
			      struct iw_request_info *info,
			      struct iw_freq *wextfreq, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	struct ieee80211_channel *chan = NULL;
	int err, freq;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
	if (freq < 0)
		return freq;

	if (freq) {
		chan = ieee80211_get_channel(wdev->wiphy, freq);
		if (!chan)
			return -EINVAL;
		if (chan->flags & IEEE80211_CHAN_DISABLED)
			return -EINVAL;
	}

	cfg80211_lock_rdev(rdev);
	mutex_lock(&rdev->devlist_mtx);
	wdev_lock(wdev);

	if (wdev->sme_state != CFG80211_SME_IDLE) {
		bool event = true;

		if (wdev->wext.connect.channel == chan) {
			err = 0;
			goto out;
		}

		/* if SSID set, we'll try right again, avoid event */
		if (wdev->wext.connect.ssid_len)
			event = false;
		err = __cfg80211_disconnect(rdev, dev,
					    WLAN_REASON_DEAUTH_LEAVING, event);
		if (err)
			goto out;
	}


	wdev->wext.connect.channel = chan;

	/*
	 * SSID is not set, we just want to switch monitor channel,
	 * this is really just backward compatibility, if the SSID
	 * is set then we use the channel to select the BSS to use
	 * to connect to instead. If we were connected on another
	 * channel we disconnected above and reconnect below.
	 */
	if (chan && !wdev->wext.connect.ssid_len) {
		struct cfg80211_chan_def chandef = {
			.width = NL80211_CHAN_WIDTH_20_NOHT,
			.center_freq1 = freq,
		};

		chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
		if (chandef.chan)
			err = cfg80211_set_monitor_channel(rdev, &chandef);
		else
			err = -EINVAL;
		goto out;
	}

	err = cfg80211_mgd_wext_connect(rdev, wdev);
 out:
	wdev_unlock(wdev);
	mutex_unlock(&rdev->devlist_mtx);
	cfg80211_unlock_rdev(rdev);
	return err;
}

int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
			      struct iw_request_info *info,
			      struct iw_freq *freq, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct ieee80211_channel *chan = NULL;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	wdev_lock(wdev);
	if (wdev->current_bss)
		chan = wdev->current_bss->pub.channel;
	else if (wdev->wext.connect.channel)
		chan = wdev->wext.connect.channel;
	wdev_unlock(wdev);

	if (chan) {
		freq->m = chan->center_freq;
		freq->e = 6;
		return 0;
	}

	/* no channel if not joining */
	return -EINVAL;
}

int cfg80211_mgd_wext_siwessid(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_point *data, char *ssid)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	size_t len = data->length;
	int err;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	if (!data->flags)
		len = 0;

	/* iwconfig uses nul termination in SSID.. */
	if (len > 0 && ssid[len - 1] == '\0')
		len--;

	cfg80211_lock_rdev(rdev);
	mutex_lock(&rdev->devlist_mtx);
	wdev_lock(wdev);

	err = 0;

	if (wdev->sme_state != CFG80211_SME_IDLE) {
		bool event = true;

		if (wdev->wext.connect.ssid && len &&
		    len == wdev->wext.connect.ssid_len &&
		    memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
			goto out;

		/* if SSID set now, we'll try to connect, avoid event */
		if (len)
			event = false;
		err = __cfg80211_disconnect(rdev, dev,
					    WLAN_REASON_DEAUTH_LEAVING, event);
		if (err)
			goto out;
	}

	wdev->wext.prev_bssid_valid = false;
	wdev->wext.connect.ssid = wdev->wext.ssid;
	memcpy(wdev->wext.ssid, ssid, len);
	wdev->wext.connect.ssid_len = len;

	wdev->wext.connect.crypto.control_port = false;
	wdev->wext.connect.crypto.control_port_ethertype =
					cpu_to_be16(ETH_P_PAE);

	err = cfg80211_mgd_wext_connect(rdev, wdev);
 out:
	wdev_unlock(wdev);
	mutex_unlock(&rdev->devlist_mtx);
	cfg80211_unlock_rdev(rdev);
	return err;
}

int cfg80211_mgd_wext_giwessid(struct net_device *dev,
			       struct iw_request_info *info,
			       struct iw_point *data, char *ssid)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	data->flags = 0;

	wdev_lock(wdev);
	if (wdev->current_bss) {
		const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
						    WLAN_EID_SSID);
		if (ie) {
			data->flags = 1;
			data->length = ie[1];
			memcpy(ssid, ie + 2, data->length);
		}
	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
		data->flags = 1;
		data->length = wdev->wext.connect.ssid_len;
		memcpy(ssid, wdev->wext.connect.ssid, data->length);
	}
	wdev_unlock(wdev);

	return 0;
}

int cfg80211_mgd_wext_siwap(struct net_device *dev,
			    struct iw_request_info *info,
			    struct sockaddr *ap_addr, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	u8 *bssid = ap_addr->sa_data;
	int err;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	if (ap_addr->sa_family != ARPHRD_ETHER)
		return -EINVAL;

	/* automatic mode */
	if (is_zero_ether_addr(bssid) || is_broadcast_ether_addr(bssid))
		bssid = NULL;

	cfg80211_lock_rdev(rdev);
	mutex_lock(&rdev->devlist_mtx);
	wdev_lock(wdev);

	if (wdev->sme_state != CFG80211_SME_IDLE) {
		err = 0;
		/* both automatic */
		if (!bssid && !wdev->wext.connect.bssid)
			goto out;

		/* fixed already - and no change */
		if (wdev->wext.connect.bssid && bssid &&
		    ether_addr_equal(bssid, wdev->wext.connect.bssid))
			goto out;

		err = __cfg80211_disconnect(rdev, dev,
					    WLAN_REASON_DEAUTH_LEAVING, false);
		if (err)
			goto out;
	}

	if (bssid) {
		memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
		wdev->wext.connect.bssid = wdev->wext.bssid;
	} else
		wdev->wext.connect.bssid = NULL;

	err = cfg80211_mgd_wext_connect(rdev, wdev);
 out:
	wdev_unlock(wdev);
	mutex_unlock(&rdev->devlist_mtx);
	cfg80211_unlock_rdev(rdev);
	return err;
}

int cfg80211_mgd_wext_giwap(struct net_device *dev,
			    struct iw_request_info *info,
			    struct sockaddr *ap_addr, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;

	/* call only for station! */
	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
		return -EINVAL;

	ap_addr->sa_family = ARPHRD_ETHER;

	wdev_lock(wdev);
	if (wdev->current_bss)
		memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
	else
		memset(ap_addr->sa_data, 0, ETH_ALEN);
	wdev_unlock(wdev);

	return 0;
}

int cfg80211_wext_siwgenie(struct net_device *dev,
			   struct iw_request_info *info,
			   struct iw_point *data, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	u8 *ie = extra;
	int ie_len = data->length, err;

	if (wdev->iftype != NL80211_IFTYPE_STATION)
		return -EOPNOTSUPP;

	if (!ie_len)
		ie = NULL;

	wdev_lock(wdev);

	/* no change */
	err = 0;
	if (wdev->wext.ie_len == ie_len &&
	    memcmp(wdev->wext.ie, ie, ie_len) == 0)
		goto out;

	if (ie_len) {
		ie = kmemdup(extra, ie_len, GFP_KERNEL);
		if (!ie) {
			err = -ENOMEM;
			goto out;
		}
	} else
		ie = NULL;

	kfree(wdev->wext.ie);
	wdev->wext.ie = ie;
	wdev->wext.ie_len = ie_len;

	if (wdev->sme_state != CFG80211_SME_IDLE) {
		err = __cfg80211_disconnect(rdev, dev,
					    WLAN_REASON_DEAUTH_LEAVING, false);
		if (err)
			goto out;
	}

	/* userspace better not think we'll reconnect */
	err = 0;
 out:
	wdev_unlock(wdev);
	return err;
}

int cfg80211_wext_siwmlme(struct net_device *dev,
			  struct iw_request_info *info,
			  struct iw_point *data, char *extra)
{
	struct wireless_dev *wdev = dev->ieee80211_ptr;
	struct iw_mlme *mlme = (struct iw_mlme *)extra;
	struct cfg80211_registered_device *rdev;
	int err;

	if (!wdev)
		return -EOPNOTSUPP;

	rdev = wiphy_to_dev(wdev->wiphy);

	if (wdev->iftype != NL80211_IFTYPE_STATION)
		return -EINVAL;

	if (mlme->addr.sa_family != ARPHRD_ETHER)
		return -EINVAL;

	wdev_lock(wdev);
	switch (mlme->cmd) {
	case IW_MLME_DEAUTH:
	case IW_MLME_DISASSOC:
		err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
					    true);
		break;
	default:
		err = -EOPNOTSUPP;
		break;
	}
	wdev_unlock(wdev);

	return err;
}
Commit	Line	Data
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
bc3b2d7f	8	#include <linux/export.h>
f2129354 JB	9	#include <linux/etherdevice.h>
f2129354 JB	10	#include <linux/if_arp.h>
5a0e3ad6	11	#include <linux/slab.h>
f2129354	12	#include <net/cfg80211.h>
262eb9b2	13	#include <net/cfg80211-wext.h>
0e82ffe3	14	#include "wext-compat.h"
f2129354 JB	15	#include "nl80211.h"
f2129354 JB	16
fffd0934 JB	17	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	18	struct wireless_dev *wdev)
f2129354	19	{
fffd0934	20	struct cfg80211_cached_keys *ck = NULL;
f401a6f7	21	const u8 *prev_bssid = NULL;
fffd0934	22	int err, i;
f2129354	23
667503dd JB	24	ASSERT_RDEV_LOCK(rdev);
	25	ASSERT_WDEV_LOCK(wdev);
	26
f2129354 JB	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;
f2129354	32
4486ea98 BS	33	/* Use default background scan period */
	34	wdev->wext.connect.bg_scan_period = -1;
	35
fffd0934 JB	36	if (wdev->wext.keys) {
	37	wdev->wext.keys->def = wdev->wext.default_key;
	38	wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
4be3bd8c JB	39	if (wdev->wext.default_key != -1)
4be3bd8c JB	40	wdev->wext.connect.privacy = true;
fffd0934 JB	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	}
f401a6f7 JB	53
	54	if (wdev->wext.prev_bssid_valid)
	55	prev_bssid = wdev->wext.prev_bssid;
	56
fffd0934	57	err = __cfg80211_connect(rdev, wdev->netdev,
f401a6f7	58	&wdev->wext.connect, ck, prev_bssid);
fffd0934 JB	59	if (err)
fffd0934 JB	60	kfree(ck);
f2129354 JB	61
	62	return err;
	63	}
	64
	65	int cfg80211_mgd_wext_siwfreq(struct net_device *dev,
	66	struct iw_request_info *info,
59bbb6f7	67	struct iw_freq wextfreq, char extra)
f2129354 JB	68	{
	69	struct wireless_dev *wdev = dev->ieee80211_ptr;
	70	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
59bbb6f7 JB	71	struct ieee80211_channel *chan = NULL;
59bbb6f7 JB	72	int err, freq;
f2129354 JB	73
	74	/* call only for station! */
	75	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	76	return -EINVAL;
	77
59bbb6f7 JB	78	freq = cfg80211_wext_freq(wdev->wiphy, wextfreq);
	79	if (freq < 0)
	80	return freq;
f2129354	81
59bbb6f7 JB	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	}
f2129354	89
667503dd	90	cfg80211_lock_rdev(rdev);
59bbb6f7	91	mutex_lock(&rdev->devlist_mtx);
667503dd JB	92	wdev_lock(wdev);
667503dd JB	93
f2129354 JB	94	if (wdev->sme_state != CFG80211_SME_IDLE) {
f2129354 JB	95	bool event = true;
25e83c49 JB	96
	97	if (wdev->wext.connect.channel == chan) {
	98	err = 0;
	99	goto out;
	100	}
	101
f2129354 JB	102	/* if SSID set, we'll try right again, avoid event */
	103	if (wdev->wext.connect.ssid_len)
	104	event = false;
59bbb6f7 JB	105	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	106	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	107	if (err)
667503dd	108	goto out;
f2129354 JB	109	}
f2129354 JB	110
667503dd	111
f2129354 JB	112	wdev->wext.connect.channel = chan;
f2129354 JB	113
e8c9bd5b JB	114	/*
	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.
	120	*/
59bbb6f7	121	if (chan && !wdev->wext.connect.ssid_len) {
683b6d3b	122	struct cfg80211_chan_def chandef = {
3d9d1d66 JB	123	.width = NL80211_CHAN_WIDTH_20_NOHT,
3d9d1d66 JB	124	.center_freq1 = freq,
683b6d3b JB	125	};
	126
	127	chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
	128	if (chandef.chan)
	129	err = cfg80211_set_monitor_channel(rdev, &chandef);
	130	else
	131	err = -EINVAL;
667503dd	132	goto out;
f2129354 JB	133	}
f2129354 JB	134
59bbb6f7	135	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	136	out:
667503dd JB	137	wdev_unlock(wdev);
59bbb6f7	138	mutex_unlock(&rdev->devlist_mtx);
667503dd JB	139	cfg80211_unlock_rdev(rdev);
667503dd JB	140	return err;
f2129354	141	}
f2129354 JB	142
	143	int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
	144	struct iw_request_info *info,
	145	struct iw_freq freq, char extra)
	146	{
	147	struct wireless_dev *wdev = dev->ieee80211_ptr;
	148	struct ieee80211_channel *chan = NULL;
	149
	150	/* call only for station! */
	151	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	152	return -EINVAL;
	153
667503dd	154	wdev_lock(wdev);
f2129354	155	if (wdev->current_bss)
19957bb3	156	chan = wdev->current_bss->pub.channel;
f2129354 JB	157	else if (wdev->wext.connect.channel)
f2129354 JB	158	chan = wdev->wext.connect.channel;
667503dd	159	wdev_unlock(wdev);
f2129354 JB	160
	161	if (chan) {
	162	freq->m = chan->center_freq;
	163	freq->e = 6;
	164	return 0;
	165	}
	166
	167	/* no channel if not joining */
	168	return -EINVAL;
	169	}
f2129354 JB	170
	171	int cfg80211_mgd_wext_siwessid(struct net_device *dev,
	172	struct iw_request_info *info,
	173	struct iw_point data, char ssid)
	174	{
	175	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	176	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	177	size_t len = data->length;
	178	int err;
	179
	180	/* call only for station! */
	181	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	182	return -EINVAL;
	183
	184	if (!data->flags)
	185	len = 0;
	186
	187	/* iwconfig uses nul termination in SSID.. */
	188	if (len > 0 && ssid[len - 1] == '\0')
	189	len--;
	190
59bbb6f7 JB	191	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	192	mutex_lock(&rdev->devlist_mtx);
667503dd JB	193	wdev_lock(wdev);
	194
	195	err = 0;
	196
f2129354 JB	197	if (wdev->sme_state != CFG80211_SME_IDLE) {
f2129354 JB	198	bool event = true;
25e83c49 JB	199
	200	if (wdev->wext.connect.ssid && len &&
	201	len == wdev->wext.connect.ssid_len &&
	202	memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
	203	goto out;
	204
f2129354 JB	205	/* if SSID set now, we'll try to connect, avoid event */
	206	if (len)
	207	event = false;
59bbb6f7 JB	208	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	209	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	210	if (err)
667503dd	211	goto out;
f2129354 JB	212	}
f2129354 JB	213
f401a6f7	214	wdev->wext.prev_bssid_valid = false;
f2129354 JB	215	wdev->wext.connect.ssid = wdev->wext.ssid;
	216	memcpy(wdev->wext.ssid, ssid, len);
	217	wdev->wext.connect.ssid_len = len;
	218
	219	wdev->wext.connect.crypto.control_port = false;
c0692b8f JB	220	wdev->wext.connect.crypto.control_port_ethertype =
c0692b8f JB	221	cpu_to_be16(ETH_P_PAE);
f2129354	222
59bbb6f7	223	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	224	out:
667503dd JB	225	wdev_unlock(wdev);
59bbb6f7 JB	226	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	227	cfg80211_unlock_rdev(rdev);
667503dd	228	return err;
f2129354	229	}
f2129354 JB	230
	231	int cfg80211_mgd_wext_giwessid(struct net_device *dev,
	232	struct iw_request_info *info,
	233	struct iw_point data, char ssid)
	234	{
	235	struct wireless_dev *wdev = dev->ieee80211_ptr;
	236
	237	/* call only for station! */
	238	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	239	return -EINVAL;
	240
	241	data->flags = 0;
	242
667503dd	243	wdev_lock(wdev);
a42dd7ef ZY	244	if (wdev->current_bss) {
	245	const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
	246	WLAN_EID_SSID);
	247	if (ie) {
	248	data->flags = 1;
	249	data->length = ie[1];
	250	memcpy(ssid, ie + 2, data->length);
	251	}
	252	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
f2129354 JB	253	data->flags = 1;
	254	data->length = wdev->wext.connect.ssid_len;
	255	memcpy(ssid, wdev->wext.connect.ssid, data->length);
33de4f9d	256	}
667503dd	257	wdev_unlock(wdev);
f2129354 JB	258
	259	return 0;
	260	}
f2129354 JB	261
	262	int cfg80211_mgd_wext_siwap(struct net_device *dev,
	263	struct iw_request_info *info,
	264	struct sockaddr ap_addr, char extra)
	265	{
	266	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	267	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	268	u8 *bssid = ap_addr->sa_data;
	269	int err;
	270
	271	/* call only for station! */
	272	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	273	return -EINVAL;
	274
	275	if (ap_addr->sa_family != ARPHRD_ETHER)
	276	return -EINVAL;
	277
	278	/* automatic mode */
	279	if (is_zero_ether_addr(bssid) \|\| is_broadcast_ether_addr(bssid))
	280	bssid = NULL;
	281
59bbb6f7 JB	282	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	283	mutex_lock(&rdev->devlist_mtx);
667503dd JB	284	wdev_lock(wdev);
667503dd JB	285
25e83c49 JB	286	if (wdev->sme_state != CFG80211_SME_IDLE) {
	287	err = 0;
	288	/* both automatic */
	289	if (!bssid && !wdev->wext.connect.bssid)
	290	goto out;
f2129354	291
25e83c49 JB	292	/* fixed already - and no change */
25e83c49 JB	293	if (wdev->wext.connect.bssid && bssid &&
ac422d3c	294	ether_addr_equal(bssid, wdev->wext.connect.bssid))
25e83c49	295	goto out;
f2129354	296
59bbb6f7 JB	297	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	298	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	299	if (err)
667503dd	300	goto out;
f2129354 JB	301	}
	302
	303	if (bssid) {
	304	memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
	305	wdev->wext.connect.bssid = wdev->wext.bssid;
	306	} else
	307	wdev->wext.connect.bssid = NULL;
	308
59bbb6f7	309	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	310	out:
667503dd JB	311	wdev_unlock(wdev);
59bbb6f7 JB	312	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	313	cfg80211_unlock_rdev(rdev);
667503dd	314	return err;
f2129354	315	}
f2129354 JB	316
	317	int cfg80211_mgd_wext_giwap(struct net_device *dev,
	318	struct iw_request_info *info,
	319	struct sockaddr ap_addr, char extra)
	320	{
	321	struct wireless_dev *wdev = dev->ieee80211_ptr;
	322
	323	/* call only for station! */
	324	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	325	return -EINVAL;
	326
	327	ap_addr->sa_family = ARPHRD_ETHER;
	328
667503dd	329	wdev_lock(wdev);
f2129354	330	if (wdev->current_bss)
19957bb3	331	memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
f2129354 JB	332	else
f2129354 JB	333	memset(ap_addr->sa_data, 0, ETH_ALEN);
667503dd	334	wdev_unlock(wdev);
f2129354 JB	335
	336	return 0;
	337	}
f2129354 JB	338
	339	int cfg80211_wext_siwgenie(struct net_device *dev,
	340	struct iw_request_info *info,
	341	struct iw_point data, char extra)
	342	{
	343	struct wireless_dev *wdev = dev->ieee80211_ptr;
	344	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	345	u8 *ie = extra;
	346	int ie_len = data->length, err;
	347
	348	if (wdev->iftype != NL80211_IFTYPE_STATION)
	349	return -EOPNOTSUPP;
	350
	351	if (!ie_len)
	352	ie = NULL;
	353
667503dd JB	354	wdev_lock(wdev);
667503dd JB	355
f2129354	356	/* no change */
667503dd	357	err = 0;
f2129354 JB	358	if (wdev->wext.ie_len == ie_len &&
f2129354 JB	359	memcmp(wdev->wext.ie, ie, ie_len) == 0)
667503dd	360	goto out;
f2129354 JB	361
	362	if (ie_len) {
	363	ie = kmemdup(extra, ie_len, GFP_KERNEL);
667503dd JB	364	if (!ie) {
	365	err = -ENOMEM;
	366	goto out;
	367	}
f2129354 JB	368	} else
	369	ie = NULL;
	370
	371	kfree(wdev->wext.ie);
	372	wdev->wext.ie = ie;
	373	wdev->wext.ie_len = ie_len;
	374
	375	if (wdev->sme_state != CFG80211_SME_IDLE) {
667503dd JB	376	err = __cfg80211_disconnect(rdev, dev,
667503dd JB	377	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	378	if (err)
667503dd	379	goto out;
f2129354 JB	380	}
	381
	382	/* userspace better not think we'll reconnect */
667503dd JB	383	err = 0;
	384	out:
	385	wdev_unlock(wdev);
	386	return err;
f2129354	387	}
f2129354 JB	388
	389	int cfg80211_wext_siwmlme(struct net_device *dev,
	390	struct iw_request_info *info,
	391	struct iw_point data, char extra)
	392	{
	393	struct wireless_dev *wdev = dev->ieee80211_ptr;
	394	struct iw_mlme mlme = (struct iw_mlme )extra;
	395	struct cfg80211_registered_device *rdev;
667503dd	396	int err;
f2129354 JB	397
	398	if (!wdev)
	399	return -EOPNOTSUPP;
	400
	401	rdev = wiphy_to_dev(wdev->wiphy);
	402
	403	if (wdev->iftype != NL80211_IFTYPE_STATION)
	404	return -EINVAL;
	405
	406	if (mlme->addr.sa_family != ARPHRD_ETHER)
	407	return -EINVAL;
	408
667503dd	409	wdev_lock(wdev);
f2129354 JB	410	switch (mlme->cmd) {
	411	case IW_MLME_DEAUTH:
	412	case IW_MLME_DISASSOC:
667503dd JB	413	err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
	414	true);
	415	break;
f2129354	416	default:
667503dd JB	417	err = -EOPNOTSUPP;
667503dd JB	418	break;
f2129354	419	}
667503dd JB	420	wdev_unlock(wdev);
	421
	422	return err;
f2129354	423	}