2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
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.
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"
17 #include "debugfs_netdev.h"
19 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata)
23 /* Default values for sub-interface parameters */
24 sdata->drop_unencrypted = 0;
26 for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++)
27 skb_queue_head_init(&sdata->fragments[i].skb_list);
30 static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata)
34 for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
35 __skb_queue_purge(&sdata->fragments[i].skb_list);
39 /* Must be called with rtnl lock held. */
40 int ieee80211_if_add(struct net_device *dev, const char *name,
41 struct net_device **new_dev, int type)
43 struct net_device *ndev;
44 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
45 struct ieee80211_sub_if_data *sdata = NULL;
49 ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
50 name, ieee80211_if_setup);
54 ret = dev_alloc_name(ndev, ndev->name);
58 memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
59 ndev->base_addr = dev->base_addr;
61 ndev->mem_start = dev->mem_start;
62 ndev->mem_end = dev->mem_end;
63 SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
65 sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
66 ndev->ieee80211_ptr = &sdata->wdev;
67 sdata->wdev.wiphy = local->hw.wiphy;
68 sdata->type = IEEE80211_IF_TYPE_AP;
71 ieee80211_if_sdata_init(sdata);
73 ret = register_netdevice(ndev);
77 ieee80211_debugfs_add_netdev(sdata);
78 ieee80211_if_set_type(ndev, type);
80 write_lock_bh(&local->sub_if_lock);
81 if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) {
82 write_unlock_bh(&local->sub_if_lock);
83 __ieee80211_if_del(local, sdata);
86 list_add(&sdata->list, &local->sub_if_list);
89 write_unlock_bh(&local->sub_if_lock);
91 ieee80211_update_default_wep_only(local);
100 int ieee80211_if_add_mgmt(struct ieee80211_local *local)
102 struct net_device *ndev;
103 struct ieee80211_sub_if_data *nsdata;
108 ndev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), "wmgmt%d",
109 ieee80211_if_mgmt_setup);
112 ret = dev_alloc_name(ndev, ndev->name);
116 memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
117 SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
119 nsdata = IEEE80211_DEV_TO_SUB_IF(ndev);
120 ndev->ieee80211_ptr = &nsdata->wdev;
121 nsdata->wdev.wiphy = local->hw.wiphy;
122 nsdata->type = IEEE80211_IF_TYPE_MGMT;
124 nsdata->local = local;
125 ieee80211_if_sdata_init(nsdata);
127 ret = register_netdevice(ndev);
131 ieee80211_debugfs_add_netdev(nsdata);
133 if (local->open_count > 0)
143 void ieee80211_if_del_mgmt(struct ieee80211_local *local)
145 struct net_device *apdev;
148 apdev = local->apdev;
149 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(apdev));
151 unregister_netdevice(apdev);
154 void ieee80211_if_set_type(struct net_device *dev, int type)
156 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
157 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
158 int oldtype = sdata->type;
162 case IEEE80211_IF_TYPE_WDS:
165 case IEEE80211_IF_TYPE_VLAN:
167 case IEEE80211_IF_TYPE_AP:
168 sdata->u.ap.dtim_period = 2;
169 sdata->u.ap.force_unicast_rateidx = -1;
170 sdata->u.ap.max_ratectrl_rateidx = -1;
171 skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
172 sdata->bss = &sdata->u.ap;
174 case IEEE80211_IF_TYPE_STA:
175 case IEEE80211_IF_TYPE_IBSS: {
176 struct ieee80211_sub_if_data *msdata;
177 struct ieee80211_if_sta *ifsta;
179 ifsta = &sdata->u.sta;
180 INIT_WORK(&ifsta->work, ieee80211_sta_work);
181 setup_timer(&ifsta->timer, ieee80211_sta_timer,
182 (unsigned long) sdata);
183 skb_queue_head_init(&ifsta->skb_queue);
185 init_timer(&ifsta->admit_timer);
186 ifsta->admit_timer.data = (unsigned long) dev;
187 ifsta->admit_timer.function = ieee80211_admit_refresh;
189 ifsta->capab = WLAN_CAPABILITY_ESS;
190 ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
191 IEEE80211_AUTH_ALG_SHARED_KEY;
192 ifsta->create_ibss = 1;
193 ifsta->wmm_enabled = 1;
194 ifsta->ht_enabled = 1;
195 ifsta->auto_channel_sel = 1;
196 ifsta->auto_bssid_sel = 1;
198 /* Initialize non-AP QSTA QoS Params */
199 ifsta->dot11EDCAAveragingPeriod = 5;
200 ifsta->MPDUExchangeTime = 0;
201 #ifdef CONFIG_MAC80211_DEBUGFS
202 ifsta->tspec.nominal_msdu_size = cpu_to_le16(200),
203 ifsta->tspec.inactivity_interval = cpu_to_le32(40),
204 ifsta->tspec.mean_data_rate = cpu_to_le32(40000),
205 ifsta->tspec.min_phy_rate = cpu_to_le32(6000000),
206 ifsta->tspec.surplus_band_allow = cpu_to_le16(8192),
207 ifsta->tspec.medium_time = cpu_to_le16(30),
210 msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev);
211 sdata->bss = &msdata->u.ap;
214 case IEEE80211_IF_TYPE_MNTR:
215 dev->type = ARPHRD_IEEE80211_RADIOTAP;
218 printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x",
219 dev->name, __FUNCTION__, type);
221 ieee80211_debugfs_change_if_type(sdata, oldtype);
222 ieee80211_update_default_wep_only(local);
225 /* Must be called with rtnl lock held. */
226 void ieee80211_if_reinit(struct net_device *dev)
228 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
229 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
230 struct sta_info *sta;
234 ieee80211_if_sdata_deinit(sdata);
235 for (i = 0; i < NUM_DEFAULT_KEYS; i++) {
239 /* The interface is down at the moment, so there is not
240 * really much point in disabling the keys at this point. */
241 memset(addr, 0xff, ETH_ALEN);
242 if (local->ops->set_key)
243 local->ops->set_key(local_to_hw(local), DISABLE_KEY, addr,
246 ieee80211_key_free(sdata->keys[i]);
247 sdata->keys[i] = NULL;
250 switch (sdata->type) {
251 case IEEE80211_IF_TYPE_AP: {
252 /* Remove all virtual interfaces that use this BSS
253 * as their sdata->bss */
254 struct ieee80211_sub_if_data *tsdata, *n;
257 write_lock_bh(&local->sub_if_lock);
258 list_for_each_entry_safe(tsdata, n, &local->sub_if_list, list) {
259 if (tsdata != sdata && tsdata->bss == &sdata->u.ap) {
260 printk(KERN_DEBUG "%s: removing virtual "
261 "interface %s because its BSS interface"
262 " is being removed\n",
263 sdata->dev->name, tsdata->dev->name);
264 list_move_tail(&tsdata->list, &tmp_list);
267 write_unlock_bh(&local->sub_if_lock);
269 list_for_each_entry_safe(tsdata, n, &tmp_list, list)
270 __ieee80211_if_del(local, tsdata);
272 kfree(sdata->u.ap.beacon_head);
273 kfree(sdata->u.ap.beacon_tail);
274 kfree(sdata->u.ap.generic_elem);
276 if (dev != local->mdev) {
278 while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) {
279 local->total_ps_buffered--;
286 case IEEE80211_IF_TYPE_WDS:
287 sta = sta_info_get(local, sdata->u.wds.remote_addr);
290 sta_info_free(sta, 0);
292 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
293 printk(KERN_DEBUG "%s: Someone had deleted my STA "
294 "entry for the WDS link\n", dev->name);
295 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
298 case IEEE80211_IF_TYPE_STA:
299 case IEEE80211_IF_TYPE_IBSS:
300 kfree(sdata->u.sta.extra_ie);
301 sdata->u.sta.extra_ie = NULL;
302 kfree(sdata->u.sta.assocreq_ies);
303 sdata->u.sta.assocreq_ies = NULL;
304 kfree(sdata->u.sta.assocresp_ies);
305 sdata->u.sta.assocresp_ies = NULL;
306 if (sdata->u.sta.probe_resp) {
307 dev_kfree_skb(sdata->u.sta.probe_resp);
308 sdata->u.sta.probe_resp = NULL;
312 case IEEE80211_IF_TYPE_MNTR:
313 dev->type = ARPHRD_ETHER;
317 /* remove all STAs that are bound to this virtual interface */
318 sta_info_flush(local, dev);
320 memset(&sdata->u, 0, sizeof(sdata->u));
321 ieee80211_if_sdata_init(sdata);
324 /* Must be called with rtnl lock held. */
325 void __ieee80211_if_del(struct ieee80211_local *local,
326 struct ieee80211_sub_if_data *sdata)
328 struct net_device *dev = sdata->dev;
330 ieee80211_debugfs_remove_netdev(sdata);
331 unregister_netdevice(dev);
332 /* Except master interface, the net_device will be freed by
333 * net_device->destructor (i. e. ieee80211_if_free). */
336 /* Must be called with rtnl lock held. */
337 int ieee80211_if_remove(struct net_device *dev, const char *name, int id)
339 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
340 struct ieee80211_sub_if_data *sdata, *n;
344 write_lock_bh(&local->sub_if_lock);
345 list_for_each_entry_safe(sdata, n, &local->sub_if_list, list) {
346 if ((sdata->type == id || id == -1) &&
347 strcmp(name, sdata->dev->name) == 0 &&
348 sdata->dev != local->mdev) {
349 list_del(&sdata->list);
350 write_unlock_bh(&local->sub_if_lock);
351 __ieee80211_if_del(local, sdata);
352 ieee80211_update_default_wep_only(local);
356 write_unlock_bh(&local->sub_if_lock);
360 void ieee80211_if_free(struct net_device *dev)
362 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
363 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
365 /* local->apdev must be NULL when freeing management interface */
366 BUG_ON(dev == local->apdev);
367 ieee80211_if_sdata_deinit(sdata);