[GitHub/mt8127/android_kernel_alcatel_ttab.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);
	mutex_lock(&rdev->sched_scan_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->sched_scan_mtx);
	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);
	mutex_lock(&rdev->sched_scan_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->sched_scan_mtx);
	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);
	mutex_lock(&rdev->sched_scan_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->sched_scan_mtx);
	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);
f9f47529	92	mutex_lock(&rdev->sched_scan_mtx);
667503dd JB	93	wdev_lock(wdev);
667503dd JB	94
f2129354 JB	95	if (wdev->sme_state != CFG80211_SME_IDLE) {
f2129354 JB	96	bool event = true;
25e83c49 JB	97
	98	if (wdev->wext.connect.channel == chan) {
	99	err = 0;
	100	goto out;
	101	}
	102
f2129354 JB	103	/* if SSID set, we'll try right again, avoid event */
	104	if (wdev->wext.connect.ssid_len)
	105	event = false;
59bbb6f7 JB	106	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	107	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	108	if (err)
667503dd	109	goto out;
f2129354 JB	110	}
f2129354 JB	111
667503dd	112
f2129354 JB	113	wdev->wext.connect.channel = chan;
f2129354 JB	114
e8c9bd5b JB	115	/*
	116	* SSID is not set, we just want to switch monitor channel,
	117	* this is really just backward compatibility, if the SSID
	118	* is set then we use the channel to select the BSS to use
	119	* to connect to instead. If we were connected on another
	120	* channel we disconnected above and reconnect below.
	121	*/
59bbb6f7	122	if (chan && !wdev->wext.connect.ssid_len) {
683b6d3b	123	struct cfg80211_chan_def chandef = {
3d9d1d66 JB	124	.width = NL80211_CHAN_WIDTH_20_NOHT,
3d9d1d66 JB	125	.center_freq1 = freq,
683b6d3b JB	126	};
	127
	128	chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
	129	if (chandef.chan)
	130	err = cfg80211_set_monitor_channel(rdev, &chandef);
	131	else
	132	err = -EINVAL;
667503dd	133	goto out;
f2129354 JB	134	}
f2129354 JB	135
59bbb6f7	136	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	137	out:
667503dd JB	138	wdev_unlock(wdev);
f9f47529	139	mutex_unlock(&rdev->sched_scan_mtx);
59bbb6f7	140	mutex_unlock(&rdev->devlist_mtx);
667503dd JB	141	cfg80211_unlock_rdev(rdev);
667503dd JB	142	return err;
f2129354	143	}
f2129354 JB	144
	145	int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
	146	struct iw_request_info *info,
	147	struct iw_freq freq, char extra)
	148	{
	149	struct wireless_dev *wdev = dev->ieee80211_ptr;
	150	struct ieee80211_channel *chan = NULL;
	151
	152	/* call only for station! */
	153	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	154	return -EINVAL;
	155
667503dd	156	wdev_lock(wdev);
f2129354	157	if (wdev->current_bss)
19957bb3	158	chan = wdev->current_bss->pub.channel;
f2129354 JB	159	else if (wdev->wext.connect.channel)
f2129354 JB	160	chan = wdev->wext.connect.channel;
667503dd	161	wdev_unlock(wdev);
f2129354 JB	162
	163	if (chan) {
	164	freq->m = chan->center_freq;
	165	freq->e = 6;
	166	return 0;
	167	}
	168
	169	/* no channel if not joining */
	170	return -EINVAL;
	171	}
f2129354 JB	172
	173	int cfg80211_mgd_wext_siwessid(struct net_device *dev,
	174	struct iw_request_info *info,
	175	struct iw_point data, char ssid)
	176	{
	177	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	178	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	179	size_t len = data->length;
	180	int err;
	181
	182	/* call only for station! */
	183	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	184	return -EINVAL;
	185
	186	if (!data->flags)
	187	len = 0;
	188
	189	/* iwconfig uses nul termination in SSID.. */
	190	if (len > 0 && ssid[len - 1] == '\0')
	191	len--;
	192
59bbb6f7 JB	193	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	194	mutex_lock(&rdev->devlist_mtx);
f9f47529	195	mutex_lock(&rdev->sched_scan_mtx);
667503dd JB	196	wdev_lock(wdev);
	197
	198	err = 0;
	199
f2129354 JB	200	if (wdev->sme_state != CFG80211_SME_IDLE) {
f2129354 JB	201	bool event = true;
25e83c49 JB	202
	203	if (wdev->wext.connect.ssid && len &&
	204	len == wdev->wext.connect.ssid_len &&
	205	memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
	206	goto out;
	207
f2129354 JB	208	/* if SSID set now, we'll try to connect, avoid event */
	209	if (len)
	210	event = false;
59bbb6f7 JB	211	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	212	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	213	if (err)
667503dd	214	goto out;
f2129354 JB	215	}
f2129354 JB	216
f401a6f7	217	wdev->wext.prev_bssid_valid = false;
f2129354 JB	218	wdev->wext.connect.ssid = wdev->wext.ssid;
	219	memcpy(wdev->wext.ssid, ssid, len);
	220	wdev->wext.connect.ssid_len = len;
	221
	222	wdev->wext.connect.crypto.control_port = false;
c0692b8f JB	223	wdev->wext.connect.crypto.control_port_ethertype =
c0692b8f JB	224	cpu_to_be16(ETH_P_PAE);
f2129354	225
59bbb6f7	226	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	227	out:
667503dd JB	228	wdev_unlock(wdev);
f9f47529	229	mutex_unlock(&rdev->sched_scan_mtx);
59bbb6f7 JB	230	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	231	cfg80211_unlock_rdev(rdev);
667503dd	232	return err;
f2129354	233	}
f2129354 JB	234
	235	int cfg80211_mgd_wext_giwessid(struct net_device *dev,
	236	struct iw_request_info *info,
	237	struct iw_point data, char ssid)
	238	{
	239	struct wireless_dev *wdev = dev->ieee80211_ptr;
	240
	241	/* call only for station! */
	242	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	243	return -EINVAL;
	244
	245	data->flags = 0;
	246
667503dd	247	wdev_lock(wdev);
a42dd7ef	248	if (wdev->current_bss) {
9caf0364 JB	249	const u8 *ie;
	250
	251	rcu_read_lock();
	252	ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
	253	WLAN_EID_SSID);
a42dd7ef ZY	254	if (ie) {
	255	data->flags = 1;
	256	data->length = ie[1];
	257	memcpy(ssid, ie + 2, data->length);
	258	}
9caf0364	259	rcu_read_unlock();
a42dd7ef	260	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
f2129354 JB	261	data->flags = 1;
	262	data->length = wdev->wext.connect.ssid_len;
	263	memcpy(ssid, wdev->wext.connect.ssid, data->length);
33de4f9d	264	}
667503dd	265	wdev_unlock(wdev);
f2129354 JB	266
	267	return 0;
	268	}
f2129354 JB	269
	270	int cfg80211_mgd_wext_siwap(struct net_device *dev,
	271	struct iw_request_info *info,
	272	struct sockaddr ap_addr, char extra)
	273	{
	274	struct wireless_dev *wdev = dev->ieee80211_ptr;
59bbb6f7	275	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
f2129354 JB	276	u8 *bssid = ap_addr->sa_data;
	277	int err;
	278
	279	/* call only for station! */
	280	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	281	return -EINVAL;
	282
	283	if (ap_addr->sa_family != ARPHRD_ETHER)
	284	return -EINVAL;
	285
	286	/* automatic mode */
	287	if (is_zero_ether_addr(bssid) \|\| is_broadcast_ether_addr(bssid))
	288	bssid = NULL;
	289
59bbb6f7 JB	290	cfg80211_lock_rdev(rdev);
59bbb6f7 JB	291	mutex_lock(&rdev->devlist_mtx);
f9f47529	292	mutex_lock(&rdev->sched_scan_mtx);
667503dd JB	293	wdev_lock(wdev);
667503dd JB	294
25e83c49 JB	295	if (wdev->sme_state != CFG80211_SME_IDLE) {
	296	err = 0;
	297	/* both automatic */
	298	if (!bssid && !wdev->wext.connect.bssid)
	299	goto out;
f2129354	300
25e83c49 JB	301	/* fixed already - and no change */
25e83c49 JB	302	if (wdev->wext.connect.bssid && bssid &&
ac422d3c	303	ether_addr_equal(bssid, wdev->wext.connect.bssid))
25e83c49	304	goto out;
f2129354	305
59bbb6f7 JB	306	err = __cfg80211_disconnect(rdev, dev,
59bbb6f7 JB	307	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	308	if (err)
667503dd	309	goto out;
f2129354 JB	310	}
	311
	312	if (bssid) {
	313	memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
	314	wdev->wext.connect.bssid = wdev->wext.bssid;
	315	} else
	316	wdev->wext.connect.bssid = NULL;
	317
59bbb6f7	318	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	319	out:
667503dd JB	320	wdev_unlock(wdev);
f9f47529	321	mutex_unlock(&rdev->sched_scan_mtx);
59bbb6f7 JB	322	mutex_unlock(&rdev->devlist_mtx);
59bbb6f7 JB	323	cfg80211_unlock_rdev(rdev);
667503dd	324	return err;
f2129354	325	}
f2129354 JB	326
	327	int cfg80211_mgd_wext_giwap(struct net_device *dev,
	328	struct iw_request_info *info,
	329	struct sockaddr ap_addr, char extra)
	330	{
	331	struct wireless_dev *wdev = dev->ieee80211_ptr;
	332
	333	/* call only for station! */
	334	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	335	return -EINVAL;
	336
	337	ap_addr->sa_family = ARPHRD_ETHER;
	338
667503dd	339	wdev_lock(wdev);
f2129354	340	if (wdev->current_bss)
19957bb3	341	memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
f2129354 JB	342	else
f2129354 JB	343	memset(ap_addr->sa_data, 0, ETH_ALEN);
667503dd	344	wdev_unlock(wdev);
f2129354 JB	345
	346	return 0;
	347	}
f2129354 JB	348
	349	int cfg80211_wext_siwgenie(struct net_device *dev,
	350	struct iw_request_info *info,
	351	struct iw_point data, char extra)
	352	{
	353	struct wireless_dev *wdev = dev->ieee80211_ptr;
	354	struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
	355	u8 *ie = extra;
	356	int ie_len = data->length, err;
	357
	358	if (wdev->iftype != NL80211_IFTYPE_STATION)
	359	return -EOPNOTSUPP;
	360
	361	if (!ie_len)
	362	ie = NULL;
	363
667503dd JB	364	wdev_lock(wdev);
667503dd JB	365
f2129354	366	/* no change */
667503dd	367	err = 0;
f2129354 JB	368	if (wdev->wext.ie_len == ie_len &&
f2129354 JB	369	memcmp(wdev->wext.ie, ie, ie_len) == 0)
667503dd	370	goto out;
f2129354 JB	371
	372	if (ie_len) {
	373	ie = kmemdup(extra, ie_len, GFP_KERNEL);
667503dd JB	374	if (!ie) {
	375	err = -ENOMEM;
	376	goto out;
	377	}
f2129354 JB	378	} else
	379	ie = NULL;
	380
	381	kfree(wdev->wext.ie);
	382	wdev->wext.ie = ie;
	383	wdev->wext.ie_len = ie_len;
	384
	385	if (wdev->sme_state != CFG80211_SME_IDLE) {
667503dd JB	386	err = __cfg80211_disconnect(rdev, dev,
667503dd JB	387	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	388	if (err)
667503dd	389	goto out;
f2129354 JB	390	}
	391
	392	/* userspace better not think we'll reconnect */
667503dd JB	393	err = 0;
	394	out:
	395	wdev_unlock(wdev);
	396	return err;
f2129354	397	}
f2129354 JB	398
	399	int cfg80211_wext_siwmlme(struct net_device *dev,
	400	struct iw_request_info *info,
	401	struct iw_point data, char extra)
	402	{
	403	struct wireless_dev *wdev = dev->ieee80211_ptr;
	404	struct iw_mlme mlme = (struct iw_mlme )extra;
	405	struct cfg80211_registered_device *rdev;
667503dd	406	int err;
f2129354 JB	407
	408	if (!wdev)
	409	return -EOPNOTSUPP;
	410
	411	rdev = wiphy_to_dev(wdev->wiphy);
	412
	413	if (wdev->iftype != NL80211_IFTYPE_STATION)
	414	return -EINVAL;
	415
	416	if (mlme->addr.sa_family != ARPHRD_ETHER)
	417	return -EINVAL;
	418
667503dd	419	wdev_lock(wdev);
f2129354 JB	420	switch (mlme->cmd) {
	421	case IW_MLME_DEAUTH:
	422	case IW_MLME_DISASSOC:
667503dd JB	423	err = __cfg80211_disconnect(rdev, dev, mlme->reason_code,
	424	true);
	425	break;
f2129354	426	default:
667503dd JB	427	err = -EOPNOTSUPP;
667503dd JB	428	break;
f2129354	429	}
667503dd JB	430	wdev_unlock(wdev);
	431
	432	return err;
f2129354	433	}