1 files changed, 344 insertions, 0 deletions
diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c
new file mode 100644
index 000000000000..64267d4b31a4
--- /dev/null
+++ b/net/mac80211/ieee80211_iface.c
@@ -0,0 +1,344 @@
+/*
+ * 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"
+void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
+{
+        int i;
+        /* Default values for sub-interface parameters */
+        sdata->drop_unencrypted = 0;
+        sdata->eapol = 1;
+        for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
+                skb_queue_head_init(&sdata->fragments[i].skb_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 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(struct ieee80211_sub_if_data),
+                            name, ieee80211_if_setup);
+        if (!ndev)
+                return -ENOMEM;
+        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->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_if_set_type(ndev, type);
+        write_lock_bh(&local->sub_if_lock);
+        if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
+                write_unlock_bh(&local->sub_if_lock);
+                __ieee80211_if_del(local, sdata);
+                return -ENODEV;
+        }
+        list_add(&sdata->list, &local->sub_if_list);
+        if (new_dev)
+                *new_dev = ndev;
+        write_unlock_bh(&local->sub_if_lock);
+        ieee80211_update_default_wep_only(local);
+        return 0;
+fail:
+        free_netdev(ndev);
+        return ret;
+}
+int ieee80211_if_add_mgmt(struct ieee80211_local *local)
+{
+        struct net_device *ndev;
+        struct ieee80211_sub_if_data *nsdata;
+        int ret;
+        ASSERT_RTNL();
+        ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), "wmgmt%d",
+                            ieee80211_if_mgmt_setup);
+        if (!ndev)
+                return -ENOMEM;
+        ret = dev_alloc_name(ndev, ndev->name);
+        if (ret < 0)
+                goto fail;
+        memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+        SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
+        nsdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+        ndev->ieee80211_ptr = &nsdata->wdev;
+        nsdata->wdev.wiphy = local->hw.wiphy;
+        nsdata->type = IEEE80211_IF_TYPE_MGMT;
+        nsdata->dev = ndev;
+        nsdata->local = local;
+        ieee80211_if_sdata_init(nsdata);
+        ret = register_netdevice(ndev);
+        if (ret)
+                goto fail;
+        if (local->open_count > 0)
+                dev_open(ndev);
+        local->apdev = ndev;
+        return 0;
+fail:
+        free_netdev(ndev);
+        return ret;
+}
+void ieee80211_if_del_mgmt(struct ieee80211_local *local)
+{
+        struct net_device *apdev;
+        ASSERT_RTNL();
+        apdev = local->apdev;
+        local->apdev = NULL;
+        unregister_netdevice(apdev);
+}
+void ieee80211_if_set_type(struct net_device *dev, int type)
+{
+        struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+        struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+        sdata->type = type;
+        switch (type) {
+        case IEEE80211_IF_TYPE_WDS:
+                sdata->bss = NULL;
+                break;
+        case IEEE80211_IF_TYPE_VLAN:
+                break;
+        case IEEE80211_IF_TYPE_AP:
+                sdata->u.ap.dtim_period = 2;
+                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;
+                break;
+        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->create_ibss = 1;
+                ifsta->wmm_enabled = 1;
+                ifsta->auto_channel_sel = 1;
+                ifsta->auto_bssid_sel = 1;
+                msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
+                sdata->bss = &msdata->u.ap;
+                break;
+        }
+        case IEEE80211_IF_TYPE_MNTR:
+                dev->type = ARPHRD_IEEE80211_RADIOTAP;
+                break;
+        default:
+                printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
+                       dev->name, __FUNCTION__, type);
+        }
+        ieee80211_update_default_wep_only(local);
+}
+/* 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 sta_info *sta;
+        int i;
+        ASSERT_RTNL();
+        ieee80211_if_sdata_deinit(sdata);
+        for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
+                if (!sdata->keys[i])
+                        continue;
+#if 0
+                /* The interface is down at the moment, so there is not
+                 * really much point in disabling the keys at this point. */
+                memset(addr, 0xff, ETH_ALEN);
+                if (local->ops->set_key)
+                        local->ops->set_key(local_to_hw(local), DISABLE_KEY, addr,
+                                            local->keys[i], 0);
+#endif
+                ieee80211_key_free(sdata->keys[i]);
+                sdata->keys[i] = NULL;
+        }
+        switch (sdata->type) {
+        case IEEE80211_IF_TYPE_AP: {
+                /* Remove all virtual interfaces that use this BSS
+                 * as their sdata->bss */
+                struct ieee80211_sub_if_data *tsdata, *n;
+                LIST_HEAD(tmp_list);
+                write_lock_bh(&local->sub_if_lock);
+                list_for_each_entry_safe(tsdata, n, &local->sub_if_list, 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_move_tail(&tsdata->list, &tmp_list);
+                        }
+                }
+                write_unlock_bh(&local->sub_if_lock);
+                list_for_each_entry_safe(tsdata, n, &tmp_list, list)
+                        __ieee80211_if_del(local, tsdata);
+                kfree(sdata->u.ap.beacon_head);
+                kfree(sdata->u.ap.beacon_tail);
+                kfree(sdata->u.ap.generic_elem);
+                if (dev != local->mdev) {
+                        struct sk_buff *skb;
+                        while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
+                                local->total_ps_buffered--;
+                                dev_kfree_skb(skb);
+                        }
+                }
+                break;
+        }
+        case IEEE80211_IF_TYPE_WDS:
+                sta = sta_info_get(local, sdata->u.wds.remote_addr);
+                if (sta) {
+                        sta_info_put(sta);
+                        sta_info_free(sta, 0);
+                } else {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+                        printk(KERN_DEBUG "%s: Someone had deleted my STA "
+                               "entry for the WDS link\n", dev->name);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+                }
+                break;
+        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;
+        }
+        /* remove all STAs that are bound to this virtual interface */
+        sta_info_flush(local, dev);
+        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;
+        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();
+        write_lock_bh(&local->sub_if_lock);
+        list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
+                if ((sdata->type == id || id == -1) &&
+                    strcmp(name, sdata->dev->name) == 0 &&
+                    sdata->dev != local->mdev) {
+                        list_del(&sdata->list);
+                        write_unlock_bh(&local->sub_if_lock);
+                        __ieee80211_if_del(local, sdata);
+                        ieee80211_update_default_wep_only(local);
+                        return 0;
+                }
+        }
+        write_unlock_bh(&local->sub_if_lock);
+        return -ENODEV;
+}
+void ieee80211_if_free(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);
+        /* local->apdev must be NULL when freeing management interface */
+        BUG_ON(dev == local->apdev);
+        ieee80211_if_sdata_deinit(sdata);
+        free_netdev(dev);
+}

diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/ieee80211_iface.c new file mode 100644 index 000000000000..64267d4b31a4 --- /dev/null +++ b/net/mac80211/ieee80211_iface.c
@@ -0,0 +1,344 @@
	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"
	17
	18	void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
	19	{
	20	int i;
	21
	22	/* Default values for sub-interface parameters */
	23	sdata->drop_unencrypted = 0;
	24	sdata->eapol = 1;
	25	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
	26	skb_queue_head_init(&sdata->fragments[i].skb_list);
	27	}
	28
	29	static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
	30	{
	31	int i;
	32
	33	for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
	34	__skb_queue_purge(&sdata->fragments[i].skb_list);
	35	}
	36	}
	37
	38	/* Must be called with rtnl lock held. */
	39	int ieee80211_if_add(struct net_device dev, const char name,
	40	struct net_device **new_dev, int type)
	41	{
	42	struct net_device *ndev;
	43	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	44	struct ieee80211_sub_if_data *sdata = NULL;
	45	int ret;
	46
	47	ASSERT_RTNL();
	48	ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
	49	name, ieee80211_if_setup);
	50	if (!ndev)
	51	return -ENOMEM;
	52
	53	ret = dev_alloc_name(ndev, ndev->name);
	54	if (ret < 0)
	55	goto fail;
	56
	57	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
	58	ndev->base_addr = dev->base_addr;
	59	ndev->irq = dev->irq;
	60	ndev->mem_start = dev->mem_start;
	61	ndev->mem_end = dev->mem_end;
	62	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
	63
	64	sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
	65	ndev->ieee80211_ptr = &sdata->wdev;
	66	sdata->wdev.wiphy = local->hw.wiphy;
	67	sdata->type = IEEE80211_IF_TYPE_AP;
	68	sdata->dev = ndev;
	69	sdata->local = local;
	70	ieee80211_if_sdata_init(sdata);
	71
	72	ret = register_netdevice(ndev);
	73	if (ret)
	74	goto fail;
	75
	76	ieee80211_if_set_type(ndev, type);
	77
	78	write_lock_bh(&local->sub_if_lock);
	79	if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
	80	write_unlock_bh(&local->sub_if_lock);
	81	__ieee80211_if_del(local, sdata);
	82	return -ENODEV;
	83	}
	84	list_add(&sdata->list, &local->sub_if_list);
	85	if (new_dev)
	86	*new_dev = ndev;
	87	write_unlock_bh(&local->sub_if_lock);
	88
	89	ieee80211_update_default_wep_only(local);
	90
	91	return 0;
	92
	93	fail:
	94	free_netdev(ndev);
	95	return ret;
	96	}
	97
	98	int ieee80211_if_add_mgmt(struct ieee80211_local *local)
	99	{
	100	struct net_device *ndev;
	101	struct ieee80211_sub_if_data *nsdata;
	102	int ret;
	103
	104	ASSERT_RTNL();
	105
	106	ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), "wmgmt%d",
	107	ieee80211_if_mgmt_setup);
	108	if (!ndev)
	109	return -ENOMEM;
	110	ret = dev_alloc_name(ndev, ndev->name);
	111	if (ret < 0)
	112	goto fail;
	113
	114	memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
	115	SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
	116
	117	nsdata = IEEE80211_DEV_TO_SUB_IF(ndev);
	118	ndev->ieee80211_ptr = &nsdata->wdev;
	119	nsdata->wdev.wiphy = local->hw.wiphy;
	120	nsdata->type = IEEE80211_IF_TYPE_MGMT;
	121	nsdata->dev = ndev;
	122	nsdata->local = local;
	123	ieee80211_if_sdata_init(nsdata);
	124
	125	ret = register_netdevice(ndev);
	126	if (ret)
	127	goto fail;
	128
	129	if (local->open_count > 0)
	130	dev_open(ndev);
	131	local->apdev = ndev;
	132	return 0;
	133
	134	fail:
	135	free_netdev(ndev);
	136	return ret;
	137	}
	138
	139	void ieee80211_if_del_mgmt(struct ieee80211_local *local)
	140	{
	141	struct net_device *apdev;
	142
	143	ASSERT_RTNL();
	144	apdev = local->apdev;
	145	local->apdev = NULL;
	146	unregister_netdevice(apdev);
	147	}
	148
	149	void ieee80211_if_set_type(struct net_device *dev, int type)
	150	{
	151	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	152	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	153
	154	sdata->type = type;
	155	switch (type) {
	156	case IEEE80211_IF_TYPE_WDS:
	157	sdata->bss = NULL;
	158	break;
	159	case IEEE80211_IF_TYPE_VLAN:
	160	break;
	161	case IEEE80211_IF_TYPE_AP:
	162	sdata->u.ap.dtim_period = 2;
	163	sdata->u.ap.force_unicast_rateidx = -1;
	164	sdata->u.ap.max_ratectrl_rateidx = -1;
	165	skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
	166	sdata->bss = &sdata->u.ap;
	167	break;
	168	case IEEE80211_IF_TYPE_STA:
	169	case IEEE80211_IF_TYPE_IBSS: {
	170	struct ieee80211_sub_if_data *msdata;
	171	struct ieee80211_if_sta *ifsta;
	172
	173	ifsta = &sdata->u.sta;
	174	INIT_WORK(&ifsta->work, ieee80211_sta_work);
	175	setup_timer(&ifsta->timer, ieee80211_sta_timer,
	176	(unsigned long) sdata);
	177	skb_queue_head_init(&ifsta->skb_queue);
	178
	179	ifsta->capab = WLAN_CAPABILITY_ESS;
	180	ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN \|
	181	IEEE80211_AUTH_ALG_SHARED_KEY;
	182	ifsta->create_ibss = 1;
	183	ifsta->wmm_enabled = 1;
	184	ifsta->auto_channel_sel = 1;
	185	ifsta->auto_bssid_sel = 1;
	186
	187	msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
	188	sdata->bss = &msdata->u.ap;
	189	break;
	190	}
	191	case IEEE80211_IF_TYPE_MNTR:
	192	dev->type = ARPHRD_IEEE80211_RADIOTAP;
	193	break;
	194	default:
	195	printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
	196	dev->name, __FUNCTION__, type);
	197	}
	198	ieee80211_update_default_wep_only(local);
	199	}
	200
	201	/* Must be called with rtnl lock held. */
	202	void ieee80211_if_reinit(struct net_device *dev)
	203	{
	204	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	205	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	206	struct sta_info *sta;
	207	int i;
	208
	209	ASSERT_RTNL();
	210	ieee80211_if_sdata_deinit(sdata);
	211	for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
	212	if (!sdata->keys[i])
	213	continue;
	214	#if 0
	215	/* The interface is down at the moment, so there is not
	216	* really much point in disabling the keys at this point. */
	217	memset(addr, 0xff, ETH_ALEN);
	218	if (local->ops->set_key)
	219	local->ops->set_key(local_to_hw(local), DISABLE_KEY, addr,
	220	local->keys[i], 0);
	221	#endif
	222	ieee80211_key_free(sdata->keys[i]);
	223	sdata->keys[i] = NULL;
	224	}
	225
	226	switch (sdata->type) {
	227	case IEEE80211_IF_TYPE_AP: {
	228	/* Remove all virtual interfaces that use this BSS
	229	* as their sdata->bss */
	230	struct ieee80211_sub_if_data tsdata, n;
	231	LIST_HEAD(tmp_list);
	232
	233	write_lock_bh(&local->sub_if_lock);
	234	list_for_each_entry_safe(tsdata, n, &local->sub_if_list, list) {
	235	if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
	236	printk(KERN_DEBUG "%s: removing virtual "
	237	"interface %s because its BSS interface"
	238	" is being removed\n",
	239	sdata->dev->name, tsdata->dev->name);
	240	list_move_tail(&tsdata->list, &tmp_list);
	241	}
	242	}
	243	write_unlock_bh(&local->sub_if_lock);
	244
	245	list_for_each_entry_safe(tsdata, n, &tmp_list, list)
	246	__ieee80211_if_del(local, tsdata);
	247
	248	kfree(sdata->u.ap.beacon_head);
	249	kfree(sdata->u.ap.beacon_tail);
	250	kfree(sdata->u.ap.generic_elem);
	251
	252	if (dev != local->mdev) {
	253	struct sk_buff *skb;
	254	while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
	255	local->total_ps_buffered--;
	256	dev_kfree_skb(skb);
	257	}
	258	}
	259
	260	break;
	261	}
	262	case IEEE80211_IF_TYPE_WDS:
	263	sta = sta_info_get(local, sdata->u.wds.remote_addr);
	264	if (sta) {
	265	sta_info_put(sta);
	266	sta_info_free(sta, 0);
	267	} else {
	268	#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
	269	printk(KERN_DEBUG "%s: Someone had deleted my STA "
	270	"entry for the WDS link\n", dev->name);
	271	#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
	272	}
	273	break;
	274	case IEEE80211_IF_TYPE_STA:
	275	case IEEE80211_IF_TYPE_IBSS:
	276	kfree(sdata->u.sta.extra_ie);
	277	sdata->u.sta.extra_ie = NULL;
	278	kfree(sdata->u.sta.assocreq_ies);
	279	sdata->u.sta.assocreq_ies = NULL;
	280	kfree(sdata->u.sta.assocresp_ies);
	281	sdata->u.sta.assocresp_ies = NULL;
	282	if (sdata->u.sta.probe_resp) {
	283	dev_kfree_skb(sdata->u.sta.probe_resp);
	284	sdata->u.sta.probe_resp = NULL;
	285	}
	286
	287	break;
	288	case IEEE80211_IF_TYPE_MNTR:
	289	dev->type = ARPHRD_ETHER;
	290	break;
	291	}
	292
	293	/* remove all STAs that are bound to this virtual interface */
	294	sta_info_flush(local, dev);
	295
	296	memset(&sdata->u, 0, sizeof(sdata->u));
	297	ieee80211_if_sdata_init(sdata);
	298	}
	299
	300	/* Must be called with rtnl lock held. */
	301	void __ieee80211_if_del(struct ieee80211_local *local,
	302	struct ieee80211_sub_if_data *sdata)
	303	{
	304	struct net_device *dev = sdata->dev;
	305
	306	unregister_netdevice(dev);
	307	/* Except master interface, the net_device will be freed by
	308	* net_device->destructor (i. e. ieee80211_if_free). */
	309	}
	310
	311	/* Must be called with rtnl lock held. */
	312	int ieee80211_if_remove(struct net_device dev, const char name, int id)
	313	{
	314	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	315	struct ieee80211_sub_if_data sdata, n;
	316
	317	ASSERT_RTNL();
	318
	319	write_lock_bh(&local->sub_if_lock);
	320	list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
	321	if ((sdata->type == id \|\| id == -1) &&
	322	strcmp(name, sdata->dev->name) == 0 &&
	323	sdata->dev != local->mdev) {
	324	list_del(&sdata->list);
	325	write_unlock_bh(&local->sub_if_lock);
	326	__ieee80211_if_del(local, sdata);
	327	ieee80211_update_default_wep_only(local);
	328	return 0;
	329	}
	330	}
	331	write_unlock_bh(&local->sub_if_lock);
	332	return -ENODEV;
	333	}
	334
	335	void ieee80211_if_free(struct net_device *dev)
	336	{
	337	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
	338	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	339
	340	/* local->apdev must be NULL when freeing management interface */
	341	BUG_ON(dev == local->apdev);
	342	ieee80211_if_sdata_deinit(sdata);
	343	free_netdev(dev);
	344	}