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

// SPDX-License-Identifier: GPL-2.0
/*
 * cfg80211 wext compat for managed mode.
 *
 * Copyright 2009	Johannes Berg <johannes@sipsolutions.net>
 * Copyright (C) 2009, 2020-2021 Intel Corporation.
 */

#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_RTNL();
	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;
		if (wdev->wext.default_key != -1)
			wdev->wext.connect.privacy = true;
	}

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

	if (wdev->wext.keys && wdev->wext.keys->def != -1) {
		ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
		if (!ck)
			return -ENOMEM;
		for (i = 0; i < CFG80211_MAX_WEP_KEYS; 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_sensitive(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_rdev(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(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;
	}

	wdev_lock(wdev);

	if (wdev->conn) {
		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;
	err = cfg80211_mgd_wext_connect(rdev, wdev);
 out:
	wdev_unlock(wdev);
	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_rdev(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--;

	wdev_lock(wdev);

	err = 0;

	if (wdev->conn) {
		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);
	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;
	int ret = 0;

	/* 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];
			if (data->length > IW_ESSID_MAX_SIZE)
				ret = -EINVAL;
			else
				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 ret;
}

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_rdev(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;

	wdev_lock(wdev);

	if (wdev->conn) {
		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);
	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
		eth_zero_addr(ap_addr->sa_data);
	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_rdev(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->conn) {
		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_rdev(wdev->wiphy);

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

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

	wiphy_lock(&rdev->wiphy);
	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);
	wiphy_unlock(&rdev->wiphy);

	return err;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
f2129354 JB	2	/*
	3	* cfg80211 wext compat for managed mode.
	4	*
	5	* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
a05829a7	6	* Copyright (C) 2009, 2020-2021 Intel Corporation.
f2129354 JB	7	*/
f2129354 JB	8
bc3b2d7f	9	#include <linux/export.h>
f2129354 JB	10	#include <linux/etherdevice.h>
f2129354 JB	11	#include <linux/if_arp.h>
5a0e3ad6	12	#include <linux/slab.h>
f2129354	13	#include <net/cfg80211.h>
262eb9b2	14	#include <net/cfg80211-wext.h>
0e82ffe3	15	#include "wext-compat.h"
f2129354 JB	16	#include "nl80211.h"
f2129354 JB	17
fffd0934 JB	18	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	19	struct wireless_dev *wdev)
f2129354	20	{
fffd0934	21	struct cfg80211_cached_keys *ck = NULL;
f401a6f7	22	const u8 *prev_bssid = NULL;
fffd0934	23	int err, i;
f2129354	24
73fb08e2	25	ASSERT_RTNL();
667503dd JB	26	ASSERT_WDEV_LOCK(wdev);
667503dd JB	27
f2129354 JB	28	if (!netif_running(wdev->netdev))
	29	return 0;
	30
	31	wdev->wext.connect.ie = wdev->wext.ie;
	32	wdev->wext.connect.ie_len = wdev->wext.ie_len;
f2129354	33
4486ea98 BS	34	/* Use default background scan period */
	35	wdev->wext.connect.bg_scan_period = -1;
	36
fffd0934 JB	37	if (wdev->wext.keys) {
fffd0934 JB	38	wdev->wext.keys->def = wdev->wext.default_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
f1c1f17a	46	if (wdev->wext.keys && wdev->wext.keys->def != -1) {
fffd0934 JB	47	ck = kmemdup(wdev->wext.keys, sizeof(*ck), GFP_KERNEL);
	48	if (!ck)
	49	return -ENOMEM;
b8676221	50	for (i = 0; i < CFG80211_MAX_WEP_KEYS; i++)
fffd0934 JB	51	ck->params[i].key = ck->data[i];
fffd0934 JB	52	}
f401a6f7 JB	53
	54	if (wdev->wext.prev_bssid_valid)
	55	prev_bssid = wdev->wext.prev_bssid;
	56
83739b03 JB	57	err = cfg80211_connect(rdev, wdev->netdev,
83739b03 JB	58	&wdev->wext.connect, ck, prev_bssid);
fffd0934	59	if (err)
453431a5	60	kfree_sensitive(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	{
f2129354 JB	69	struct wireless_dev *wdev = dev->ieee80211_ptr;
f26cbf40	70	struct cfg80211_registered_device *rdev = wiphy_to_rdev(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
96998e3a	78	freq = cfg80211_wext_freq(wextfreq);
59bbb6f7 JB	79	if (freq < 0)
59bbb6f7 JB	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 JB	90	wdev_lock(wdev);
667503dd JB	91
ceca7b71	92	if (wdev->conn) {
f2129354	93	bool event = true;
25e83c49 JB	94
	95	if (wdev->wext.connect.channel == chan) {
	96	err = 0;
	97	goto out;
	98	}
	99
f2129354 JB	100	/* if SSID set, we'll try right again, avoid event */
	101	if (wdev->wext.connect.ssid_len)
	102	event = false;
83739b03 JB	103	err = cfg80211_disconnect(rdev, dev,
83739b03 JB	104	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	105	if (err)
667503dd	106	goto out;
f2129354 JB	107	}
	108
	109	wdev->wext.connect.channel = chan;
59bbb6f7	110	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	111	out:
667503dd JB	112	wdev_unlock(wdev);
667503dd	113	return err;
f2129354	114	}
f2129354 JB	115
	116	int cfg80211_mgd_wext_giwfreq(struct net_device *dev,
	117	struct iw_request_info *info,
	118	struct iw_freq freq, char extra)
	119	{
	120	struct wireless_dev *wdev = dev->ieee80211_ptr;
	121	struct ieee80211_channel *chan = NULL;
	122
	123	/* call only for station! */
	124	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	125	return -EINVAL;
	126
667503dd	127	wdev_lock(wdev);
f2129354	128	if (wdev->current_bss)
19957bb3	129	chan = wdev->current_bss->pub.channel;
f2129354 JB	130	else if (wdev->wext.connect.channel)
f2129354 JB	131	chan = wdev->wext.connect.channel;
667503dd	132	wdev_unlock(wdev);
f2129354 JB	133
	134	if (chan) {
	135	freq->m = chan->center_freq;
	136	freq->e = 6;
	137	return 0;
	138	}
	139
	140	/* no channel if not joining */
	141	return -EINVAL;
	142	}
f2129354 JB	143
	144	int cfg80211_mgd_wext_siwessid(struct net_device *dev,
	145	struct iw_request_info *info,
	146	struct iw_point data, char ssid)
	147	{
	148	struct wireless_dev *wdev = dev->ieee80211_ptr;
f26cbf40	149	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
f2129354 JB	150	size_t len = data->length;
	151	int err;
	152
	153	/* call only for station! */
	154	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	155	return -EINVAL;
	156
	157	if (!data->flags)
	158	len = 0;
	159
	160	/* iwconfig uses nul termination in SSID.. */
	161	if (len > 0 && ssid[len - 1] == '\0')
	162	len--;
	163
667503dd JB	164	wdev_lock(wdev);
	165
	166	err = 0;
	167
ceca7b71	168	if (wdev->conn) {
f2129354	169	bool event = true;
25e83c49 JB	170
	171	if (wdev->wext.connect.ssid && len &&
	172	len == wdev->wext.connect.ssid_len &&
	173	memcmp(wdev->wext.connect.ssid, ssid, len) == 0)
	174	goto out;
	175
f2129354 JB	176	/* if SSID set now, we'll try to connect, avoid event */
	177	if (len)
	178	event = false;
83739b03 JB	179	err = cfg80211_disconnect(rdev, dev,
83739b03 JB	180	WLAN_REASON_DEAUTH_LEAVING, event);
f2129354	181	if (err)
667503dd	182	goto out;
f2129354 JB	183	}
f2129354 JB	184
f401a6f7	185	wdev->wext.prev_bssid_valid = false;
f2129354 JB	186	wdev->wext.connect.ssid = wdev->wext.ssid;
	187	memcpy(wdev->wext.ssid, ssid, len);
	188	wdev->wext.connect.ssid_len = len;
	189
	190	wdev->wext.connect.crypto.control_port = false;
c0692b8f JB	191	wdev->wext.connect.crypto.control_port_ethertype =
c0692b8f JB	192	cpu_to_be16(ETH_P_PAE);
f2129354	193
59bbb6f7	194	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	195	out:
667503dd JB	196	wdev_unlock(wdev);
667503dd	197	return err;
f2129354	198	}
f2129354 JB	199
	200	int cfg80211_mgd_wext_giwessid(struct net_device *dev,
	201	struct iw_request_info *info,
	202	struct iw_point data, char ssid)
	203	{
	204	struct wireless_dev *wdev = dev->ieee80211_ptr;
4ac2813c	205	int ret = 0;
f2129354 JB	206
	207	/* call only for station! */
	208	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	209	return -EINVAL;
	210
	211	data->flags = 0;
	212
667503dd	213	wdev_lock(wdev);
a42dd7ef	214	if (wdev->current_bss) {
9caf0364 JB	215	const u8 *ie;
	216
	217	rcu_read_lock();
	218	ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
	219	WLAN_EID_SSID);
a42dd7ef ZY	220	if (ie) {
	221	data->flags = 1;
	222	data->length = ie[1];
4ac2813c WD	223	if (data->length > IW_ESSID_MAX_SIZE)
	224	ret = -EINVAL;
	225	else
	226	memcpy(ssid, ie + 2, data->length);
a42dd7ef	227	}
9caf0364	228	rcu_read_unlock();
a42dd7ef	229	} else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
f2129354 JB	230	data->flags = 1;
	231	data->length = wdev->wext.connect.ssid_len;
	232	memcpy(ssid, wdev->wext.connect.ssid, data->length);
33de4f9d	233	}
667503dd	234	wdev_unlock(wdev);
f2129354	235
4ac2813c	236	return ret;
f2129354	237	}
f2129354 JB	238
	239	int cfg80211_mgd_wext_siwap(struct net_device *dev,
	240	struct iw_request_info *info,
	241	struct sockaddr ap_addr, char extra)
	242	{
	243	struct wireless_dev *wdev = dev->ieee80211_ptr;
f26cbf40	244	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
f2129354 JB	245	u8 *bssid = ap_addr->sa_data;
	246	int err;
	247
	248	/* call only for station! */
	249	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	250	return -EINVAL;
	251
	252	if (ap_addr->sa_family != ARPHRD_ETHER)
	253	return -EINVAL;
	254
	255	/* automatic mode */
	256	if (is_zero_ether_addr(bssid) \|\| is_broadcast_ether_addr(bssid))
	257	bssid = NULL;
	258
667503dd JB	259	wdev_lock(wdev);
667503dd JB	260
ceca7b71	261	if (wdev->conn) {
25e83c49 JB	262	err = 0;
	263	/* both automatic */
	264	if (!bssid && !wdev->wext.connect.bssid)
	265	goto out;
f2129354	266
25e83c49 JB	267	/* fixed already - and no change */
25e83c49 JB	268	if (wdev->wext.connect.bssid && bssid &&
ac422d3c	269	ether_addr_equal(bssid, wdev->wext.connect.bssid))
25e83c49	270	goto out;
f2129354	271
83739b03 JB	272	err = cfg80211_disconnect(rdev, dev,
83739b03 JB	273	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	274	if (err)
667503dd	275	goto out;
f2129354 JB	276	}
	277
	278	if (bssid) {
	279	memcpy(wdev->wext.bssid, bssid, ETH_ALEN);
	280	wdev->wext.connect.bssid = wdev->wext.bssid;
	281	} else
	282	wdev->wext.connect.bssid = NULL;
	283
59bbb6f7	284	err = cfg80211_mgd_wext_connect(rdev, wdev);
667503dd JB	285	out:
667503dd JB	286	wdev_unlock(wdev);
667503dd	287	return err;
f2129354	288	}
f2129354 JB	289
	290	int cfg80211_mgd_wext_giwap(struct net_device *dev,
	291	struct iw_request_info *info,
	292	struct sockaddr ap_addr, char extra)
	293	{
	294	struct wireless_dev *wdev = dev->ieee80211_ptr;
	295
	296	/* call only for station! */
	297	if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
	298	return -EINVAL;
	299
	300	ap_addr->sa_family = ARPHRD_ETHER;
	301
667503dd	302	wdev_lock(wdev);
f2129354	303	if (wdev->current_bss)
19957bb3	304	memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN);
f2129354	305	else
d2beae10	306	eth_zero_addr(ap_addr->sa_data);
667503dd	307	wdev_unlock(wdev);
f2129354 JB	308
	309	return 0;
	310	}
f2129354 JB	311
	312	int cfg80211_wext_siwgenie(struct net_device *dev,
	313	struct iw_request_info *info,
	314	struct iw_point data, char extra)
	315	{
	316	struct wireless_dev *wdev = dev->ieee80211_ptr;
f26cbf40	317	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
f2129354 JB	318	u8 *ie = extra;
	319	int ie_len = data->length, err;
	320
	321	if (wdev->iftype != NL80211_IFTYPE_STATION)
	322	return -EOPNOTSUPP;
	323
	324	if (!ie_len)
	325	ie = NULL;
	326
667503dd JB	327	wdev_lock(wdev);
667503dd JB	328
f2129354	329	/* no change */
667503dd	330	err = 0;
f2129354 JB	331	if (wdev->wext.ie_len == ie_len &&
f2129354 JB	332	memcmp(wdev->wext.ie, ie, ie_len) == 0)
667503dd	333	goto out;
f2129354 JB	334
	335	if (ie_len) {
	336	ie = kmemdup(extra, ie_len, GFP_KERNEL);
667503dd JB	337	if (!ie) {
	338	err = -ENOMEM;
	339	goto out;
	340	}
f2129354 JB	341	} else
	342	ie = NULL;
	343
	344	kfree(wdev->wext.ie);
	345	wdev->wext.ie = ie;
	346	wdev->wext.ie_len = ie_len;
	347
ceca7b71	348	if (wdev->conn) {
83739b03 JB	349	err = cfg80211_disconnect(rdev, dev,
83739b03 JB	350	WLAN_REASON_DEAUTH_LEAVING, false);
f2129354	351	if (err)
667503dd	352	goto out;
f2129354 JB	353	}
	354
	355	/* userspace better not think we'll reconnect */
667503dd JB	356	err = 0;
	357	out:
	358	wdev_unlock(wdev);
	359	return err;
f2129354	360	}
f2129354 JB	361
	362	int cfg80211_wext_siwmlme(struct net_device *dev,
	363	struct iw_request_info *info,
	364	struct iw_point data, char extra)
	365	{
	366	struct wireless_dev *wdev = dev->ieee80211_ptr;
	367	struct iw_mlme mlme = (struct iw_mlme )extra;
	368	struct cfg80211_registered_device *rdev;
667503dd	369	int err;
f2129354 JB	370
	371	if (!wdev)
	372	return -EOPNOTSUPP;
	373
f26cbf40	374	rdev = wiphy_to_rdev(wdev->wiphy);
f2129354 JB	375
	376	if (wdev->iftype != NL80211_IFTYPE_STATION)
	377	return -EINVAL;
	378
	379	if (mlme->addr.sa_family != ARPHRD_ETHER)
	380	return -EINVAL;
	381
a05829a7	382	wiphy_lock(&rdev->wiphy);
667503dd	383	wdev_lock(wdev);
f2129354 JB	384	switch (mlme->cmd) {
	385	case IW_MLME_DEAUTH:
	386	case IW_MLME_DISASSOC:
83739b03	387	err = cfg80211_disconnect(rdev, dev, mlme->reason_code, true);
667503dd	388	break;
f2129354	389	default:
667503dd JB	390	err = -EOPNOTSUPP;
667503dd JB	391	break;
f2129354	392	}
667503dd	393	wdev_unlock(wdev);
a05829a7	394	wiphy_unlock(&rdev->wiphy);
667503dd JB	395
667503dd JB	396	return err;
f2129354	397	}