[mirror_ubuntu-zesty-kernel.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;

		rcu_read_lock();
		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);
		}
		rcu_read_unlock();
	} 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	244	if (wdev->current_bss) {
9caf0364 JB	245	const u8 *ie;
	246
	247	rcu_read_lock();
	248	ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
	249	WLAN_EID_SSID);
a42dd7ef ZY	250	if (ie) {
	251	data->flags = 1;
	252	data->length = ie[1];
	253	memcpy(ssid, ie + 2, data->length);
	254	}
9caf0364	255	rcu_read_unlock();
a42dd7ef	256	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
f2129354 JB	257	data->flags = 1;
	258	data->length = wdev->wext.connect.ssid_len;
	259	memcpy(ssid, wdev->wext.connect.ssid, data->length);
33de4f9d	260	}
667503dd	261	wdev_unlock(wdev);
f2129354 JB	262
	263	return 0;
	264	}
f2129354 JB	265
	266	int cfg80211_mgd_wext_siwap(struct net_device *dev,
	267	struct iw_request_info *info,
	268	struct sockaddr ap_addr, char extra)
	269	{
	270	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	271	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	272	u8 *bssid = ap_addr->sa_data;
	273	int err;
	274
	275	/* call only for station! */
	276	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	277	return -EINVAL;
	278
	279	if (ap_addr->sa_family != ARPHRD_ETHER)
	280	return -EINVAL;
	281
	282	/* automatic mode */
	283	if (is_zero_ether_addr(bssid) \|\| is_broadcast_ether_addr(bssid))
	284	bssid = NULL;
	285
59bbb6f7 JB	286	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	287	mutex_lock(&rdev->devlist_mtx);
667503dd JB	288	wdev_lock(wdev);
667503dd JB	289
25e83c49 JB	290	if (wdev->sme_state != CFG80211_SME_IDLE) {
	291	err = 0;
	292	/* both automatic */
	293	if (!bssid && !wdev->wext.connect.bssid)
	294	goto out;
f2129354	295
25e83c49 JB	296	/* fixed already - and no change */
25e83c49 JB	297	if (wdev->wext.connect.bssid && bssid &&
ac422d3c	298	ether_addr_equal(bssid, wdev->wext.connect.bssid))
25e83c49	299	goto out;
f2129354	300
59bbb6f7 JB	301	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	302	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	303	if (err)
667503dd	304	goto out;
f2129354 JB	305	}
	306
	307	if (bssid) {
	308	memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
	309	wdev->wext.connect.bssid = wdev->wext.bssid;
	310	} else
	311	wdev->wext.connect.bssid = NULL;
	312
59bbb6f7	313	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	314	out:
667503dd JB	315	wdev_unlock(wdev);
59bbb6f7 JB	316	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	317	cfg80211_unlock_rdev(rdev);
667503dd	318	return err;
f2129354	319	}
f2129354 JB	320
	321	int cfg80211_mgd_wext_giwap(struct net_device *dev,
	322	struct iw_request_info *info,
	323	struct sockaddr ap_addr, char extra)
	324	{
	325	struct wireless_dev *wdev = dev->ieee80211_ptr;
	326
	327	/* call only for station! */
	328	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	329	return -EINVAL;
	330
	331	ap_addr->sa_family = ARPHRD_ETHER;
	332
667503dd	333	wdev_lock(wdev);
f2129354	334	if (wdev->current_bss)
19957bb3	335	memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
f2129354 JB	336	else
f2129354 JB	337	memset(ap_addr->sa_data, 0, ETH_ALEN);
667503dd	338	wdev_unlock(wdev);
f2129354 JB	339
	340	return 0;
	341	}
f2129354 JB	342
	343	int cfg80211_wext_siwgenie(struct net_device *dev,
	344	struct iw_request_info *info,
	345	struct iw_point data, char extra)
	346	{
	347	struct wireless_dev *wdev = dev->ieee80211_ptr;
	348	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	349	u8 *ie = extra;
	350	int ie_len = data->length, err;
	351
	352	if (wdev->iftype != NL80211_IFTYPE_STATION)
	353	return -EOPNOTSUPP;
	354
	355	if (!ie_len)
	356	ie = NULL;
	357
667503dd JB	358	wdev_lock(wdev);
667503dd JB	359
f2129354	360	/* no change */
667503dd	361	err = 0;
f2129354 JB	362	if (wdev->wext.ie_len == ie_len &&
f2129354 JB	363	memcmp(wdev->wext.ie, ie, ie_len) == 0)
667503dd	364	goto out;
f2129354 JB	365
	366	if (ie_len) {
	367	ie = kmemdup(extra, ie_len, GFP_KERNEL);
667503dd JB	368	if (!ie) {
	369	err = -ENOMEM;
	370	goto out;
	371	}
f2129354 JB	372	} else
	373	ie = NULL;
	374
	375	kfree(wdev->wext.ie);
	376	wdev->wext.ie = ie;
	377	wdev->wext.ie_len = ie_len;
	378
	379	if (wdev->sme_state != CFG80211_SME_IDLE) {
667503dd JB	380	err = __cfg80211_disconnect(rdev, dev,
667503dd JB	381	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	382	if (err)
667503dd	383	goto out;
f2129354 JB	384	}
	385
	386	/* userspace better not think we'll reconnect */
667503dd JB	387	err = 0;
	388	out:
	389	wdev_unlock(wdev);
	390	return err;
f2129354	391	}
f2129354 JB	392
	393	int cfg80211_wext_siwmlme(struct net_device *dev,
	394	struct iw_request_info *info,
	395	struct iw_point data, char extra)
	396	{
	397	struct wireless_dev *wdev = dev->ieee80211_ptr;
	398	struct iw_mlme mlme = (struct iw_mlme )extra;
	399	struct cfg80211_registered_device *rdev;
667503dd	400	int err;
f2129354 JB	401
	402	if (!wdev)
	403	return -EOPNOTSUPP;
	404
	405	rdev = wiphy_to_dev(wdev->wiphy);
	406
	407	if (wdev->iftype != NL80211_IFTYPE_STATION)
	408	return -EINVAL;
	409
	410	if (mlme->addr.sa_family != ARPHRD_ETHER)
	411	return -EINVAL;
	412
667503dd	413	wdev_lock(wdev);
f2129354 JB	414	switch (mlme->cmd) {
	415	case IW_MLME_DEAUTH:
	416	case IW_MLME_DISASSOC:
667503dd JB	417	err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
	418	true);
	419	break;
f2129354	420	default:
667503dd JB	421	err = -EOPNOTSUPP;
667503dd JB	422	break;
f2129354	423	}
667503dd JB	424	wdev_unlock(wdev);
	425
	426	return err;
f2129354	427	}