[linux-2.6-block.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) {
		err = cfg80211_set_monitor_channel(rdev, freq, NL80211_CHAN_NO_HT);
		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) {
e8c9bd5b	122	err = cfg80211_set_monitor_channel(rdev, freq, NL80211_CHAN_NO_HT);
667503dd	123	goto out;
f2129354 JB	124	}
f2129354 JB	125
59bbb6f7	126	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	127	out:
667503dd JB	128	wdev_unlock(wdev);
59bbb6f7	129	mutex_unlock(&rdev->devlist_mtx);
667503dd JB	130	cfg80211_unlock_rdev(rdev);
667503dd JB	131	return err;
f2129354	132	}
f2129354 JB	133
	134	int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
	135	struct iw_request_info *info,
	136	struct iw_freq freq, char extra)
	137	{
	138	struct wireless_dev *wdev = dev->ieee80211_ptr;
	139	struct ieee80211_channel *chan = NULL;
	140
	141	/* call only for station! */
	142	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	143	return -EINVAL;
	144
667503dd	145	wdev_lock(wdev);
f2129354	146	if (wdev->current_bss)
19957bb3	147	chan = wdev->current_bss->pub.channel;
f2129354 JB	148	else if (wdev->wext.connect.channel)
f2129354 JB	149	chan = wdev->wext.connect.channel;
667503dd	150	wdev_unlock(wdev);
f2129354 JB	151
	152	if (chan) {
	153	freq->m = chan->center_freq;
	154	freq->e = 6;
	155	return 0;
	156	}
	157
	158	/* no channel if not joining */
	159	return -EINVAL;
	160	}
f2129354 JB	161
	162	int cfg80211_mgd_wext_siwessid(struct net_device *dev,
	163	struct iw_request_info *info,
	164	struct iw_point data, char ssid)
	165	{
	166	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	167	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	168	size_t len = data->length;
	169	int err;
	170
	171	/* call only for station! */
	172	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	173	return -EINVAL;
	174
	175	if (!data->flags)
	176	len = 0;
	177
	178	/* iwconfig uses nul termination in SSID.. */
	179	if (len > 0 && ssid[len - 1] == '\0')
	180	len--;
	181
59bbb6f7 JB	182	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	183	mutex_lock(&rdev->devlist_mtx);
667503dd JB	184	wdev_lock(wdev);
	185
	186	err = 0;
	187
f2129354 JB	188	if (wdev->sme_state != CFG80211_SME_IDLE) {
f2129354 JB	189	bool event = true;
25e83c49 JB	190
	191	if (wdev->wext.connect.ssid && len &&
	192	len == wdev->wext.connect.ssid_len &&
	193	memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
	194	goto out;
	195
f2129354 JB	196	/* if SSID set now, we'll try to connect, avoid event */
	197	if (len)
	198	event = false;
59bbb6f7 JB	199	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	200	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	201	if (err)
667503dd	202	goto out;
f2129354 JB	203	}
f2129354 JB	204
f401a6f7	205	wdev->wext.prev_bssid_valid = false;
f2129354 JB	206	wdev->wext.connect.ssid = wdev->wext.ssid;
	207	memcpy(wdev->wext.ssid, ssid, len);
	208	wdev->wext.connect.ssid_len = len;
	209
	210	wdev->wext.connect.crypto.control_port = false;
c0692b8f JB	211	wdev->wext.connect.crypto.control_port_ethertype =
c0692b8f JB	212	cpu_to_be16(ETH_P_PAE);
f2129354	213
59bbb6f7	214	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	215	out:
667503dd JB	216	wdev_unlock(wdev);
59bbb6f7 JB	217	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	218	cfg80211_unlock_rdev(rdev);
667503dd	219	return err;
f2129354	220	}
f2129354 JB	221
	222	int cfg80211_mgd_wext_giwessid(struct net_device *dev,
	223	struct iw_request_info *info,
	224	struct iw_point data, char ssid)
	225	{
	226	struct wireless_dev *wdev = dev->ieee80211_ptr;
	227
	228	/* call only for station! */
	229	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	230	return -EINVAL;
	231
	232	data->flags = 0;
	233
667503dd	234	wdev_lock(wdev);
a42dd7ef ZY	235	if (wdev->current_bss) {
	236	const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
	237	WLAN_EID_SSID);
	238	if (ie) {
	239	data->flags = 1;
	240	data->length = ie[1];
	241	memcpy(ssid, ie + 2, data->length);
	242	}
	243	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
f2129354 JB	244	data->flags = 1;
	245	data->length = wdev->wext.connect.ssid_len;
	246	memcpy(ssid, wdev->wext.connect.ssid, data->length);
33de4f9d	247	}
667503dd	248	wdev_unlock(wdev);
f2129354 JB	249
	250	return 0;
	251	}
f2129354 JB	252
	253	int cfg80211_mgd_wext_siwap(struct net_device *dev,
	254	struct iw_request_info *info,
	255	struct sockaddr ap_addr, char extra)
	256	{
	257	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	258	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	259	u8 *bssid = ap_addr->sa_data;
	260	int err;
	261
	262	/* call only for station! */
	263	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	264	return -EINVAL;
	265
	266	if (ap_addr->sa_family != ARPHRD_ETHER)
	267	return -EINVAL;
	268
	269	/* automatic mode */
	270	if (is_zero_ether_addr(bssid) \|\| is_broadcast_ether_addr(bssid))
	271	bssid = NULL;
	272
59bbb6f7 JB	273	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	274	mutex_lock(&rdev->devlist_mtx);
667503dd JB	275	wdev_lock(wdev);
667503dd JB	276
25e83c49 JB	277	if (wdev->sme_state != CFG80211_SME_IDLE) {
	278	err = 0;
	279	/* both automatic */
	280	if (!bssid && !wdev->wext.connect.bssid)
	281	goto out;
f2129354	282
25e83c49 JB	283	/* fixed already - and no change */
25e83c49 JB	284	if (wdev->wext.connect.bssid && bssid &&
ac422d3c	285	ether_addr_equal(bssid, wdev->wext.connect.bssid))
25e83c49	286	goto out;
f2129354	287
59bbb6f7 JB	288	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	289	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	290	if (err)
667503dd	291	goto out;
f2129354 JB	292	}
	293
	294	if (bssid) {
	295	memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
	296	wdev->wext.connect.bssid = wdev->wext.bssid;
	297	} else
	298	wdev->wext.connect.bssid = NULL;
	299
59bbb6f7	300	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	301	out:
667503dd JB	302	wdev_unlock(wdev);
59bbb6f7 JB	303	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	304	cfg80211_unlock_rdev(rdev);
667503dd	305	return err;
f2129354	306	}
f2129354 JB	307
	308	int cfg80211_mgd_wext_giwap(struct net_device *dev,
	309	struct iw_request_info *info,
	310	struct sockaddr ap_addr, char extra)
	311	{
	312	struct wireless_dev *wdev = dev->ieee80211_ptr;
	313
	314	/* call only for station! */
	315	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	316	return -EINVAL;
	317
	318	ap_addr->sa_family = ARPHRD_ETHER;
	319
667503dd	320	wdev_lock(wdev);
f2129354	321	if (wdev->current_bss)
19957bb3	322	memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
f2129354 JB	323	else
f2129354 JB	324	memset(ap_addr->sa_data, 0, ETH_ALEN);
667503dd	325	wdev_unlock(wdev);
f2129354 JB	326
	327	return 0;
	328	}
f2129354 JB	329
	330	int cfg80211_wext_siwgenie(struct net_device *dev,
	331	struct iw_request_info *info,
	332	struct iw_point data, char extra)
	333	{
	334	struct wireless_dev *wdev = dev->ieee80211_ptr;
	335	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	336	u8 *ie = extra;
	337	int ie_len = data->length, err;
	338
	339	if (wdev->iftype != NL80211_IFTYPE_STATION)
	340	return -EOPNOTSUPP;
	341
	342	if (!ie_len)
	343	ie = NULL;
	344
667503dd JB	345	wdev_lock(wdev);
667503dd JB	346
f2129354	347	/* no change */
667503dd	348	err = 0;
f2129354 JB	349	if (wdev->wext.ie_len == ie_len &&
f2129354 JB	350	memcmp(wdev->wext.ie, ie, ie_len) == 0)
667503dd	351	goto out;
f2129354 JB	352
	353	if (ie_len) {
	354	ie = kmemdup(extra, ie_len, GFP_KERNEL);
667503dd JB	355	if (!ie) {
	356	err = -ENOMEM;
	357	goto out;
	358	}
f2129354 JB	359	} else
	360	ie = NULL;
	361
	362	kfree(wdev->wext.ie);
	363	wdev->wext.ie = ie;
	364	wdev->wext.ie_len = ie_len;
	365
	366	if (wdev->sme_state != CFG80211_SME_IDLE) {
667503dd JB	367	err = __cfg80211_disconnect(rdev, dev,
667503dd JB	368	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	369	if (err)
667503dd	370	goto out;
f2129354 JB	371	}
	372
	373	/* userspace better not think we'll reconnect */
667503dd JB	374	err = 0;
	375	out:
	376	wdev_unlock(wdev);
	377	return err;
f2129354	378	}
f2129354 JB	379
	380	int cfg80211_wext_siwmlme(struct net_device *dev,
	381	struct iw_request_info *info,
	382	struct iw_point data, char extra)
	383	{
	384	struct wireless_dev *wdev = dev->ieee80211_ptr;
	385	struct iw_mlme mlme = (struct iw_mlme )extra;
	386	struct cfg80211_registered_device *rdev;
667503dd	387	int err;
f2129354 JB	388
	389	if (!wdev)
	390	return -EOPNOTSUPP;
	391
	392	rdev = wiphy_to_dev(wdev->wiphy);
	393
	394	if (wdev->iftype != NL80211_IFTYPE_STATION)
	395	return -EINVAL;
	396
	397	if (mlme->addr.sa_family != ARPHRD_ETHER)
	398	return -EINVAL;
	399
667503dd	400	wdev_lock(wdev);
f2129354 JB	401	switch (mlme->cmd) {
	402	case IW_MLME_DEAUTH:
	403	case IW_MLME_DISASSOC:
667503dd JB	404	err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
	405	true);
	406	break;
f2129354	407	default:
667503dd JB	408	err = -EOPNOTSUPP;
667503dd JB	409	break;
f2129354	410	}
667503dd JB	411	wdev_unlock(wdev);
	412
	413	return err;
f2129354	414	}