[linux-2.6-block.git] / net / mac80211 / iface.c

/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005-2006, Devicescape Software, Inc.
 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/kernel.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"
#include "debugfs_netdev.h"
#include "mesh.h"

void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
{
	int i;

	/* Default values for sub-interface parameters */
	sdata->drop_unencrypted = 0;
	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
		skb_queue_head_init(&sdata->fragments[i].skb_list);

	INIT_LIST_HEAD(&sdata->key_list);
}

static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
{
	int i;

	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
		__skb_queue_purge(&sdata->fragments[i].skb_list);
}

/* Must be called with rtnl lock held. */
int ieee80211_if_add(struct net_device *dev, const char *name,
		     struct net_device **new_dev, int type,
		     struct vif_params *params)
{
	struct net_device *ndev;
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_sub_if_data *sdata = NULL;
	int ret;

	ASSERT_RTNL();
	ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
			    name, ieee80211_if_setup);
	if (!ndev)
		return -ENOMEM;

	ndev->needed_headroom = local->tx_headroom +
				4*6 /* four MAC addresses */
				+ 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
				+ 6 /* mesh */
				+ 8 /* rfc1042/bridge tunnel */
				- ETH_HLEN /* ethernet hard_header_len */
				+ IEEE80211_ENCRYPT_HEADROOM;
	ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;

	ret = dev_alloc_name(ndev, ndev->name);
	if (ret < 0)
		goto fail;

	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
	ndev->base_addr = dev->base_addr;
	ndev->irq = dev->irq;
	ndev->mem_start = dev->mem_start;
	ndev->mem_end = dev->mem_end;
	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));

	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
	ndev->ieee80211_ptr = &sdata->wdev;
	sdata->wdev.wiphy = local->hw.wiphy;
	sdata->vif.type = IEEE80211_IF_TYPE_AP;
	sdata->dev = ndev;
	sdata->local = local;
	ieee80211_if_sdata_init(sdata);

	ret = register_netdevice(ndev);
	if (ret)
		goto fail;

	ieee80211_debugfs_add_netdev(sdata);
	ieee80211_if_set_type(ndev, type);

	if (ieee80211_vif_is_mesh(&sdata->vif) &&
	    params && params->mesh_id_len)
		ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
					     params->mesh_id_len,
					     params->mesh_id);

	/* we're under RTNL so all this is fine */
	if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
		__ieee80211_if_del(local, sdata);
		return -ENODEV;
	}
	list_add_tail_rcu(&sdata->list, &local->interfaces);

	if (new_dev)
		*new_dev = ndev;

	return 0;

fail:
	free_netdev(ndev);
	return ret;
}

void ieee80211_if_set_type(struct net_device *dev, int type)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	int oldtype = sdata->vif.type;

	/*
	 * We need to call this function on the master interface
	 * which already has a hard_start_xmit routine assigned
	 * which must not be changed.
	 */
	if (dev != sdata->local->mdev)
		dev->hard_start_xmit = ieee80211_subif_start_xmit;

	/*
	 * Called even when register_netdevice fails, it would
	 * oops if assigned before initialising the rest.
	 */
	dev->uninit = ieee80211_if_reinit;

	/* most have no BSS pointer */
	sdata->bss = NULL;
	sdata->vif.type = type;

	sdata->basic_rates = 0;

	switch (type) {
	case IEEE80211_IF_TYPE_WDS:
		/* nothing special */
		break;
	case IEEE80211_IF_TYPE_VLAN:
		sdata->u.vlan.ap = NULL;
		break;
	case IEEE80211_IF_TYPE_AP:
		sdata->u.ap.force_unicast_rateidx = -1;
		sdata->u.ap.max_ratectrl_rateidx = -1;
		skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
		sdata->bss = &sdata->u.ap;
		INIT_LIST_HEAD(&sdata->u.ap.vlans);
		break;
	case IEEE80211_IF_TYPE_MESH_POINT:
	case IEEE80211_IF_TYPE_STA:
	case IEEE80211_IF_TYPE_IBSS: {
		struct ieee80211_sub_if_data *msdata;
		struct ieee80211_if_sta *ifsta;

		ifsta = &sdata->u.sta;
		INIT_WORK(&ifsta->work, ieee80211_sta_work);
		setup_timer(&ifsta->timer, ieee80211_sta_timer,
			    (unsigned long) sdata);
		skb_queue_head_init(&ifsta->skb_queue);

		ifsta->capab = WLAN_CAPABILITY_ESS;
		ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
			IEEE80211_AUTH_ALG_SHARED_KEY;
		ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
			IEEE80211_STA_AUTO_BSSID_SEL |
			IEEE80211_STA_AUTO_CHANNEL_SEL;
		if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
			ifsta->flags |= IEEE80211_STA_WMM_ENABLED;

		msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
		sdata->bss = &msdata->u.ap;

		if (ieee80211_vif_is_mesh(&sdata->vif))
			ieee80211_mesh_init_sdata(sdata);
		break;
	}
	case IEEE80211_IF_TYPE_MNTR:
		dev->type = ARPHRD_IEEE80211_RADIOTAP;
		dev->hard_start_xmit = ieee80211_monitor_start_xmit;
		sdata->u.mntr_flags = MONITOR_FLAG_CONTROL |
				      MONITOR_FLAG_OTHER_BSS;
		break;
	case IEEE80211_IF_TYPE_INVALID:
		BUG();
		break;
	}
	ieee80211_debugfs_change_if_type(sdata, oldtype);
}

/* Must be called with rtnl lock held. */
void ieee80211_if_reinit(struct net_device *dev)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct sk_buff *skb;
	int flushed;

	ASSERT_RTNL();

	ieee80211_free_keys(sdata);

	ieee80211_if_sdata_deinit(sdata);

	/* Need to handle mesh specially to allow eliding the function call */
	if (ieee80211_vif_is_mesh(&sdata->vif))
		mesh_rmc_free(dev);

	switch (sdata->vif.type) {
	case IEEE80211_IF_TYPE_INVALID:
		/* cannot happen */
		WARN_ON(1);
		break;
	case IEEE80211_IF_TYPE_AP: {
		/* Remove all virtual interfaces that use this BSS
		 * as their sdata->bss */
		struct ieee80211_sub_if_data *tsdata, *n;
		struct beacon_data *beacon;

		list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
			if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
				printk(KERN_DEBUG "%s: removing virtual "
				       "interface %s because its BSS interface"
				       " is being removed\n",
				       sdata->dev->name, tsdata->dev->name);
				list_del_rcu(&tsdata->list);
				/*
				 * We have lots of time and can afford
				 * to sync for each interface
				 */
				synchronize_rcu();
				__ieee80211_if_del(local, tsdata);
			}
		}

		beacon = sdata->u.ap.beacon;
		rcu_assign_pointer(sdata->u.ap.beacon, NULL);
		synchronize_rcu();
		kfree(beacon);

		while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
			local->total_ps_buffered--;
			dev_kfree_skb(skb);
		}

		break;
	}
	case IEEE80211_IF_TYPE_WDS:
		/* nothing to do */
		break;
	case IEEE80211_IF_TYPE_MESH_POINT:
	case IEEE80211_IF_TYPE_STA:
	case IEEE80211_IF_TYPE_IBSS:
		kfree(sdata->u.sta.extra_ie);
		sdata->u.sta.extra_ie = NULL;
		kfree(sdata->u.sta.assocreq_ies);
		sdata->u.sta.assocreq_ies = NULL;
		kfree(sdata->u.sta.assocresp_ies);
		sdata->u.sta.assocresp_ies = NULL;
		if (sdata->u.sta.probe_resp) {
			dev_kfree_skb(sdata->u.sta.probe_resp);
			sdata->u.sta.probe_resp = NULL;
		}

		break;
	case IEEE80211_IF_TYPE_MNTR:
		dev->type = ARPHRD_ETHER;
		break;
	case IEEE80211_IF_TYPE_VLAN:
		sdata->u.vlan.ap = NULL;
		break;
	}

	flushed = sta_info_flush(local, sdata);
	WARN_ON(flushed);

	memset(&sdata->u, 0, sizeof(sdata->u));
	ieee80211_if_sdata_init(sdata);
}

/* Must be called with rtnl lock held. */
void __ieee80211_if_del(struct ieee80211_local *local,
			struct ieee80211_sub_if_data *sdata)
{
	struct net_device *dev = sdata->dev;

	ieee80211_debugfs_remove_netdev(sdata);
	unregister_netdevice(dev);
	/* Except master interface, the net_device will be freed by
	 * net_device->destructor (i. e. ieee80211_if_free). */
}

/* Must be called with rtnl lock held. */
int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	struct ieee80211_sub_if_data *sdata, *n;

	ASSERT_RTNL();

	list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
		if ((sdata->vif.type == id || id == -1) &&
		    strcmp(name, sdata->dev->name) == 0 &&
		    sdata->dev != local->mdev) {
			list_del_rcu(&sdata->list);
			synchronize_rcu();
			__ieee80211_if_del(local, sdata);
			return 0;
		}
	}
	return -ENODEV;
}

void ieee80211_if_free(struct net_device *dev)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);

	ieee80211_if_sdata_deinit(sdata);
	free_netdev(dev);
}
Commit	Line	Data
f0706e82 JB	1	/*
	2	* Copyright 2002-2005, Instant802 Networks, Inc.
	3	* Copyright 2005-2006, Devicescape Software, Inc.
	4	* Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10	#include <linux/kernel.h>
	11	#include <linux/if_arp.h>
	12	#include <linux/netdevice.h>
	13	#include <linux/rtnetlink.h>
	14	#include <net/mac80211.h>
	15	#include "ieee80211_i.h"
	16	#include "sta_info.h"
e9f207f0	17	#include "debugfs_netdev.h"
ee385855	18	#include "mesh.h"
f0706e82 JB	19
	20	void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
	21	{
	22	int i;
	23
	24	/* Default values for sub-interface parameters */
	25	sdata->drop_unencrypted = 0;
f0706e82 JB	26	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
f0706e82 JB	27	skb_queue_head_init(&sdata->fragments[i].skb_list);
11a843b7 JB	28
11a843b7 JB	29	INIT_LIST_HEAD(&sdata->key_list);
f0706e82 JB	30	}
	31
	32	static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
	33	{
	34	int i;
	35
988c0f72	36	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
f0706e82	37	__skb_queue_purge(&sdata->fragments[i].skb_list);
f0706e82 JB	38	}
	39
	40	/* Must be called with rtnl lock held. */
	41	int ieee80211_if_add(struct net_device dev, const char name,
ee385855 LCC	42	struct net_device **new_dev, int type,
ee385855 LCC	43	struct vif_params *params)
f0706e82 JB	44	{
	45	struct net_device *ndev;
	46	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	47	struct ieee80211_sub_if_data *sdata = NULL;
	48	int ret;
	49
	50	ASSERT_RTNL();
32bfd35d	51	ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size,
f0706e82 JB	52	name, ieee80211_if_setup);
	53	if (!ndev)
	54	return -ENOMEM;
	55
f3994ece JB	56	ndev->needed_headroom = local->tx_headroom +
	57	46 / four MAC addresses */
	58	+ 2 + 2 + 2 + 2 /* ctl, dur, seq, qos */
	59	+ 6 /* mesh */
	60	+ 8 /* rfc1042/bridge tunnel */
	61	- ETH_HLEN /* ethernet hard_header_len */
	62	+ IEEE80211_ENCRYPT_HEADROOM;
	63	ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
	64
f0706e82 JB	65	ret = dev_alloc_name(ndev, ndev->name);
	66	if (ret < 0)
	67	goto fail;
	68
	69	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
	70	ndev->base_addr = dev->base_addr;
	71	ndev->irq = dev->irq;
	72	ndev->mem_start = dev->mem_start;
	73	ndev->mem_end = dev->mem_end;
	74	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
	75
	76	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
	77	ndev->ieee80211_ptr = &sdata->wdev;
	78	sdata->wdev.wiphy = local->hw.wiphy;
51fb61e7	79	sdata->vif.type = IEEE80211_IF_TYPE_AP;
f0706e82 JB	80	sdata->dev = ndev;
	81	sdata->local = local;
	82	ieee80211_if_sdata_init(sdata);
	83
	84	ret = register_netdevice(ndev);
	85	if (ret)
	86	goto fail;
	87
e9f207f0	88	ieee80211_debugfs_add_netdev(sdata);
f0706e82 JB	89	ieee80211_if_set_type(ndev, type);
f0706e82 JB	90
902acc78 JB	91	if (ieee80211_vif_is_mesh(&sdata->vif) &&
	92	params && params->mesh_id_len)
	93	ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
	94	params->mesh_id_len,
	95	params->mesh_id);
ee385855	96
79010420	97	/* we're under RTNL so all this is fine */
f0706e82	98	if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
f0706e82 JB	99	__ieee80211_if_del(local, sdata);
	100	return -ENODEV;
	101	}
79010420 JB	102	list_add_tail_rcu(&sdata->list, &local->interfaces);
79010420 JB	103
f0706e82 JB	104	if (new_dev)
f0706e82 JB	105	*new_dev = ndev;
f0706e82	106
f0706e82 JB	107	return 0;
	108
	109	fail:
	110	free_netdev(ndev);
	111	return ret;
	112	}
	113
f0706e82 JB	114	void ieee80211_if_set_type(struct net_device *dev, int type)
	115	{
	116	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
51fb61e7	117	int oldtype = sdata->vif.type;
f0706e82	118
5b2812e9 JB	119	/*
	120	* We need to call this function on the master interface
	121	* which already has a hard_start_xmit routine assigned
	122	* which must not be changed.
	123	*/
0654ff05	124	if (dev != sdata->local->mdev)
5b2812e9 JB	125	dev->hard_start_xmit = ieee80211_subif_start_xmit;
	126
	127	/*
	128	* Called even when register_netdevice fails, it would
	129	* oops if assigned before initialising the rest.
	130	*/
	131	dev->uninit = ieee80211_if_reinit;
	132
	133	/* most have no BSS pointer */
	134	sdata->bss = NULL;
51fb61e7	135	sdata->vif.type = type;
5b2812e9	136
8318d78a JB	137	sdata->basic_rates = 0;
8318d78a JB	138
f0706e82 JB	139	switch (type) {
f0706e82 JB	140	case IEEE80211_IF_TYPE_WDS:
5b2812e9	141	/* nothing special */
f0706e82 JB	142	break;
f0706e82 JB	143	case IEEE80211_IF_TYPE_VLAN:
0ec3ca44	144	sdata->u.vlan.ap = NULL;
f0706e82 JB	145	break;
f0706e82 JB	146	case IEEE80211_IF_TYPE_AP:
f0706e82 JB	147	sdata->u.ap.force_unicast_rateidx = -1;
	148	sdata->u.ap.max_ratectrl_rateidx = -1;
	149	skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
	150	sdata->bss = &sdata->u.ap;
0ec3ca44	151	INIT_LIST_HEAD(&sdata->u.ap.vlans);
f0706e82	152	break;
ee385855	153	case IEEE80211_IF_TYPE_MESH_POINT:
f0706e82 JB	154	case IEEE80211_IF_TYPE_STA:
	155	case IEEE80211_IF_TYPE_IBSS: {
	156	struct ieee80211_sub_if_data *msdata;
	157	struct ieee80211_if_sta *ifsta;
	158
	159	ifsta = &sdata->u.sta;
	160	INIT_WORK(&ifsta->work, ieee80211_sta_work);
	161	setup_timer(&ifsta->timer, ieee80211_sta_timer,
	162	(unsigned long) sdata);
	163	skb_queue_head_init(&ifsta->skb_queue);
	164
	165	ifsta->capab = WLAN_CAPABILITY_ESS;
	166	ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN \|
	167	IEEE80211_AUTH_ALG_SHARED_KEY;
d6f2da5b	168	ifsta->flags \|= IEEE80211_STA_CREATE_IBSS \|
d6f2da5b JS	169	IEEE80211_STA_AUTO_BSSID_SEL \|
d6f2da5b JS	170	IEEE80211_STA_AUTO_CHANNEL_SEL;
e2530083	171	if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
3434fbd3	172	ifsta->flags \|= IEEE80211_STA_WMM_ENABLED;
f0706e82 JB	173
	174	msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
	175	sdata->bss = &msdata->u.ap;
ee385855	176
902acc78 JB	177	if (ieee80211_vif_is_mesh(&sdata->vif))
902acc78 JB	178	ieee80211_mesh_init_sdata(sdata);
f0706e82 JB	179	break;
	180	}
	181	case IEEE80211_IF_TYPE_MNTR:
	182	dev->type = ARPHRD_IEEE80211_RADIOTAP;
40f7cac9	183	dev->hard_start_xmit = ieee80211_monitor_start_xmit;
8cc9a739 MW	184	sdata->u.mntr_flags = MONITOR_FLAG_CONTROL \|
8cc9a739 MW	185	MONITOR_FLAG_OTHER_BSS;
f0706e82	186	break;
f4ea83dd JB	187	case IEEE80211_IF_TYPE_INVALID:
	188	BUG();
	189	break;
f0706e82	190	}
e9f207f0	191	ieee80211_debugfs_change_if_type(sdata, oldtype);
f0706e82 JB	192	}
	193
	194	/* Must be called with rtnl lock held. */
	195	void ieee80211_if_reinit(struct net_device *dev)
	196	{
	197	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	198	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
5b2812e9	199	struct sk_buff *skb;
44213b5e	200	int flushed;
f0706e82 JB	201
f0706e82 JB	202	ASSERT_RTNL();
11a843b7 JB	203
	204	ieee80211_free_keys(sdata);
	205
f0706e82	206	ieee80211_if_sdata_deinit(sdata);
f0706e82	207
902acc78 JB	208	/* Need to handle mesh specially to allow eliding the function call */
	209	if (ieee80211_vif_is_mesh(&sdata->vif))
	210	mesh_rmc_free(dev);
	211
51fb61e7	212	switch (sdata->vif.type) {
a2897552 JB	213	case IEEE80211_IF_TYPE_INVALID:
	214	/* cannot happen */
	215	WARN_ON(1);
	216	break;
f0706e82 JB	217	case IEEE80211_IF_TYPE_AP: {
	218	/* Remove all virtual interfaces that use this BSS
	219	* as their sdata->bss */
	220	struct ieee80211_sub_if_data tsdata, n;
e6a5ddf2	221	struct beacon_data *beacon;
f0706e82	222
79010420	223	list_for_each_entry_safe(tsdata, n, &local->interfaces, list) {
f0706e82 JB	224	if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
	225	printk(KERN_DEBUG "%s: removing virtual "
	226	"interface %s because its BSS interface"
	227	" is being removed\n",
	228	sdata->dev->name, tsdata->dev->name);
79010420 JB	229	list_del_rcu(&tsdata->list);
	230	/*
	231	* We have lots of time and can afford
	232	* to sync for each interface
	233	*/
	234	synchronize_rcu();
	235	__ieee80211_if_del(local, tsdata);
f0706e82 JB	236	}
f0706e82 JB	237	}
f0706e82	238
e6a5ddf2 JB	239	beacon = sdata->u.ap.beacon;
	240	rcu_assign_pointer(sdata->u.ap.beacon, NULL);
	241	synchronize_rcu();
	242	kfree(beacon);
f0706e82	243
5b2812e9 JB	244	while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
	245	local->total_ps_buffered--;
	246	dev_kfree_skb(skb);
f0706e82 JB	247	}
	248
	249	break;
	250	}
	251	case IEEE80211_IF_TYPE_WDS:
44213b5e	252	/* nothing to do */
f0706e82	253	break;
6032f934	254	case IEEE80211_IF_TYPE_MESH_POINT:
f0706e82 JB	255	case IEEE80211_IF_TYPE_STA:
	256	case IEEE80211_IF_TYPE_IBSS:
	257	kfree(sdata->u.sta.extra_ie);
	258	sdata->u.sta.extra_ie = NULL;
	259	kfree(sdata->u.sta.assocreq_ies);
	260	sdata->u.sta.assocreq_ies = NULL;
	261	kfree(sdata->u.sta.assocresp_ies);
	262	sdata->u.sta.assocresp_ies = NULL;
	263	if (sdata->u.sta.probe_resp) {
	264	dev_kfree_skb(sdata->u.sta.probe_resp);
	265	sdata->u.sta.probe_resp = NULL;
	266	}
	267
	268	break;
	269	case IEEE80211_IF_TYPE_MNTR:
	270	dev->type = ARPHRD_ETHER;
	271	break;
0ec3ca44 JB	272	case IEEE80211_IF_TYPE_VLAN:
	273	sdata->u.vlan.ap = NULL;
	274	break;
f0706e82 JB	275	}
f0706e82 JB	276
44213b5e JB	277	flushed = sta_info_flush(local, sdata);
44213b5e JB	278	WARN_ON(flushed);
f0706e82 JB	279
	280	memset(&sdata->u, 0, sizeof(sdata->u));
	281	ieee80211_if_sdata_init(sdata);
	282	}
	283
	284	/* Must be called with rtnl lock held. */
	285	void __ieee80211_if_del(struct ieee80211_local *local,
	286	struct ieee80211_sub_if_data *sdata)
	287	{
	288	struct net_device *dev = sdata->dev;
	289
e9f207f0	290	ieee80211_debugfs_remove_netdev(sdata);
f0706e82 JB	291	unregister_netdevice(dev);
	292	/* Except master interface, the net_device will be freed by
	293	* net_device->destructor (i. e. ieee80211_if_free). */
	294	}
	295
	296	/* Must be called with rtnl lock held. */
	297	int ieee80211_if_remove(struct net_device dev, const char name, int id)
	298	{
	299	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	300	struct ieee80211_sub_if_data sdata, n;
	301
	302	ASSERT_RTNL();
	303
79010420	304	list_for_each_entry_safe(sdata, n, &local->interfaces, list) {
51fb61e7	305	if ((sdata->vif.type == id \|\| id == -1) &&
f0706e82 JB	306	strcmp(name, sdata->dev->name) == 0 &&
f0706e82 JB	307	sdata->dev != local->mdev) {
79010420 JB	308	list_del_rcu(&sdata->list);
79010420 JB	309	synchronize_rcu();
f0706e82	310	__ieee80211_if_del(local, sdata);
f0706e82 JB	311	return 0;
	312	}
	313	}
f0706e82 JB	314	return -ENODEV;
	315	}
	316
	317	void ieee80211_if_free(struct net_device *dev)
	318	{
f0706e82 JB	319	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
f0706e82 JB	320
f0706e82 JB	321	ieee80211_if_sdata_deinit(sdata);
	322	free_netdev(dev);
	323	}