2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright 2006-2007 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.
11 #include <net/mac80211.h>
12 #include <net/ieee80211_radiotap.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/netdevice.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/skbuff.h>
19 #include <linux/etherdevice.h>
20 #include <linux/if_arp.h>
21 #include <linux/wireless.h>
22 #include <linux/rtnetlink.h>
23 #include <linux/bitmap.h>
24 #include <net/net_namespace.h>
25 #include <net/cfg80211.h>
27 #include "ieee80211_common.h"
28 #include "ieee80211_i.h"
29 #include "ieee80211_rate.h"
33 #include "ieee80211_led.h"
34 #include "ieee80211_cfg.h"
36 #include "debugfs_netdev.h"
39 * For seeing transmitted packets on monitor interfaces
40 * we have a radiotap header too.
42 struct ieee80211_tx_status_rtap_hdr
{
43 struct ieee80211_radiotap_header hdr
;
46 } __attribute__ ((packed
));
48 /* common interface routines */
50 static int header_parse_80211(struct sk_buff
*skb
, unsigned char *haddr
)
52 memcpy(haddr
, skb_mac_header(skb
) + 10, ETH_ALEN
); /* addr2 */
56 /* master interface */
58 static int ieee80211_master_open(struct net_device
*dev
)
60 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
61 struct ieee80211_sub_if_data
*sdata
;
62 int res
= -EOPNOTSUPP
;
64 read_lock(&local
->sub_if_lock
);
65 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
66 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
)) {
71 read_unlock(&local
->sub_if_lock
);
75 static int ieee80211_master_stop(struct net_device
*dev
)
77 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
78 struct ieee80211_sub_if_data
*sdata
;
80 read_lock(&local
->sub_if_lock
);
81 list_for_each_entry(sdata
, &local
->sub_if_list
, list
)
82 if (sdata
->dev
!= dev
&& netif_running(sdata
->dev
))
83 dev_close(sdata
->dev
);
84 read_unlock(&local
->sub_if_lock
);
89 /* management interface */
92 ieee80211_fill_frame_info(struct ieee80211_local
*local
,
93 struct ieee80211_frame_info
*fi
,
94 struct ieee80211_rx_status
*status
)
98 struct ieee80211_rate
*rate
;
100 jiffies_to_timespec(jiffies
, &ts
);
101 fi
->hosttime
= cpu_to_be64((u64
) ts
.tv_sec
* 1000000 +
103 fi
->mactime
= cpu_to_be64(status
->mactime
);
104 switch (status
->phymode
) {
105 case MODE_IEEE80211A
:
106 fi
->phytype
= htonl(ieee80211_phytype_ofdm_dot11_a
);
108 case MODE_IEEE80211B
:
109 fi
->phytype
= htonl(ieee80211_phytype_dsss_dot11_b
);
111 case MODE_IEEE80211G
:
112 fi
->phytype
= htonl(ieee80211_phytype_pbcc_dot11_g
);
115 fi
->phytype
= htonl(0xAAAAAAAA);
118 fi
->channel
= htonl(status
->channel
);
119 rate
= ieee80211_get_rate(local
, status
->phymode
,
122 fi
->datarate
= htonl(rate
->rate
);
123 if (rate
->flags
& IEEE80211_RATE_PREAMBLE2
) {
124 if (status
->rate
== rate
->val
)
125 fi
->preamble
= htonl(2); /* long */
126 else if (status
->rate
== rate
->val2
)
127 fi
->preamble
= htonl(1); /* short */
129 fi
->preamble
= htonl(0);
131 fi
->datarate
= htonl(0);
132 fi
->preamble
= htonl(0);
135 fi
->antenna
= htonl(status
->antenna
);
136 fi
->priority
= htonl(0xffffffff); /* no clue */
137 fi
->ssi_type
= htonl(ieee80211_ssi_raw
);
138 fi
->ssi_signal
= htonl(status
->ssi
);
139 fi
->ssi_noise
= 0x00000000;
142 /* clear everything because we really don't know.
143 * the msg_type field isn't present on monitor frames
144 * so we don't know whether it will be present or not,
145 * but it's ok to not clear it since it'll be assigned
147 memset(fi
, 0, sizeof(*fi
) - sizeof(fi
->msg_type
));
149 fi
->ssi_type
= htonl(ieee80211_ssi_none
);
151 fi
->version
= htonl(IEEE80211_FI_VERSION
);
152 fi
->length
= cpu_to_be32(sizeof(*fi
) - sizeof(fi
->msg_type
));
155 /* this routine is actually not just for this, but also
156 * for pushing fake 'management' frames into userspace.
157 * it shall be replaced by a netlink-based system. */
159 ieee80211_rx_mgmt(struct ieee80211_local
*local
, struct sk_buff
*skb
,
160 struct ieee80211_rx_status
*status
, u32 msg_type
)
162 struct ieee80211_frame_info
*fi
;
163 const size_t hlen
= sizeof(struct ieee80211_frame_info
);
164 struct net_device
*dev
= local
->apdev
;
168 if (skb_headroom(skb
) < hlen
) {
169 I802_DEBUG_INC(local
->rx_expand_skb_head
);
170 if (pskb_expand_head(skb
, hlen
, 0, GFP_ATOMIC
)) {
176 fi
= (struct ieee80211_frame_info
*) skb_push(skb
, hlen
);
178 ieee80211_fill_frame_info(local
, fi
, status
);
179 fi
->msg_type
= htonl(msg_type
);
181 dev
->stats
.rx_packets
++;
182 dev
->stats
.rx_bytes
+= skb
->len
;
184 skb_set_mac_header(skb
, 0);
185 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
186 skb
->pkt_type
= PACKET_OTHERHOST
;
187 skb
->protocol
= htons(ETH_P_802_2
);
188 memset(skb
->cb
, 0, sizeof(skb
->cb
));
192 void ieee80211_key_threshold_notify(struct net_device
*dev
,
193 struct ieee80211_key
*key
,
194 struct sta_info
*sta
)
196 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
198 struct ieee80211_msg_key_notification
*msg
;
200 /* if no one will get it anyway, don't even allocate it.
201 * unlikely because this is only relevant for APs
202 * where the device must be open... */
203 if (unlikely(!local
->apdev
))
206 skb
= dev_alloc_skb(sizeof(struct ieee80211_frame_info
) +
207 sizeof(struct ieee80211_msg_key_notification
));
211 skb_reserve(skb
, sizeof(struct ieee80211_frame_info
));
212 msg
= (struct ieee80211_msg_key_notification
*)
213 skb_put(skb
, sizeof(struct ieee80211_msg_key_notification
));
214 msg
->tx_rx_count
= key
->tx_rx_count
;
215 memcpy(msg
->ifname
, dev
->name
, IFNAMSIZ
);
217 memcpy(msg
->addr
, sta
->addr
, ETH_ALEN
);
219 memset(msg
->addr
, 0xff, ETH_ALEN
);
221 key
->tx_rx_count
= 0;
223 ieee80211_rx_mgmt(local
, skb
, NULL
,
224 ieee80211_msg_key_threshold_notification
);
227 static int ieee80211_mgmt_open(struct net_device
*dev
)
229 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
231 if (!netif_running(local
->mdev
))
236 static int ieee80211_mgmt_stop(struct net_device
*dev
)
241 static int ieee80211_change_mtu_apdev(struct net_device
*dev
, int new_mtu
)
243 /* FIX: what would be proper limits for MTU?
244 * This interface uses 802.11 frames. */
245 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
) {
246 printk(KERN_WARNING
"%s: invalid MTU %d\n",
251 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
252 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
253 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
258 void ieee80211_if_mgmt_setup(struct net_device
*dev
)
261 dev
->hard_start_xmit
= ieee80211_mgmt_start_xmit
;
262 dev
->change_mtu
= ieee80211_change_mtu_apdev
;
263 dev
->open
= ieee80211_mgmt_open
;
264 dev
->stop
= ieee80211_mgmt_stop
;
265 dev
->type
= ARPHRD_IEEE80211_PRISM
;
266 dev
->hard_header_parse
= header_parse_80211
;
267 dev
->uninit
= ieee80211_if_reinit
;
268 dev
->destructor
= ieee80211_if_free
;
271 /* regular interfaces */
273 static int ieee80211_change_mtu(struct net_device
*dev
, int new_mtu
)
275 /* FIX: what would be proper limits for MTU?
276 * This interface uses 802.3 frames. */
277 if (new_mtu
< 256 || new_mtu
> IEEE80211_MAX_DATA_LEN
- 24 - 6) {
278 printk(KERN_WARNING
"%s: invalid MTU %d\n",
283 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
284 printk(KERN_DEBUG
"%s: setting MTU %d\n", dev
->name
, new_mtu
);
285 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
290 static inline int identical_mac_addr_allowed(int type1
, int type2
)
292 return (type1
== IEEE80211_IF_TYPE_MNTR
||
293 type2
== IEEE80211_IF_TYPE_MNTR
||
294 (type1
== IEEE80211_IF_TYPE_AP
&&
295 type2
== IEEE80211_IF_TYPE_WDS
) ||
296 (type1
== IEEE80211_IF_TYPE_WDS
&&
297 (type2
== IEEE80211_IF_TYPE_WDS
||
298 type2
== IEEE80211_IF_TYPE_AP
)) ||
299 (type1
== IEEE80211_IF_TYPE_AP
&&
300 type2
== IEEE80211_IF_TYPE_VLAN
) ||
301 (type1
== IEEE80211_IF_TYPE_VLAN
&&
302 (type2
== IEEE80211_IF_TYPE_AP
||
303 type2
== IEEE80211_IF_TYPE_VLAN
)));
306 /* Check if running monitor interfaces should go to a "soft monitor" mode
307 * and switch them if necessary. */
308 static inline void ieee80211_start_soft_monitor(struct ieee80211_local
*local
)
310 struct ieee80211_if_init_conf conf
;
312 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
313 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
) &&
314 local
->ops
->remove_interface
) {
316 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
317 conf
.mac_addr
= NULL
;
318 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
322 /* Check if running monitor interfaces should go to a "hard monitor" mode
323 * and switch them if necessary. */
324 static void ieee80211_start_hard_monitor(struct ieee80211_local
*local
)
326 struct ieee80211_if_init_conf conf
;
328 if (local
->open_count
&& local
->open_count
== local
->monitors
&&
329 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
331 conf
.type
= IEEE80211_IF_TYPE_MNTR
;
332 conf
.mac_addr
= NULL
;
333 local
->ops
->add_interface(local_to_hw(local
), &conf
);
337 static void ieee80211_if_open(struct net_device
*dev
)
339 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
341 switch (sdata
->type
) {
342 case IEEE80211_IF_TYPE_STA
:
343 case IEEE80211_IF_TYPE_IBSS
:
344 sdata
->u
.sta
.flags
&= ~IEEE80211_STA_PREV_BSSID_SET
;
349 static int ieee80211_open(struct net_device
*dev
)
351 struct ieee80211_sub_if_data
*sdata
, *nsdata
;
352 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
353 struct ieee80211_if_init_conf conf
;
356 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
357 read_lock(&local
->sub_if_lock
);
358 list_for_each_entry(nsdata
, &local
->sub_if_list
, list
) {
359 struct net_device
*ndev
= nsdata
->dev
;
361 if (ndev
!= dev
&& ndev
!= local
->mdev
&& netif_running(ndev
) &&
362 compare_ether_addr(dev
->dev_addr
, ndev
->dev_addr
) == 0 &&
363 !identical_mac_addr_allowed(sdata
->type
, nsdata
->type
)) {
364 read_unlock(&local
->sub_if_lock
);
368 read_unlock(&local
->sub_if_lock
);
370 if (sdata
->type
== IEEE80211_IF_TYPE_WDS
&&
371 is_zero_ether_addr(sdata
->u
.wds
.remote_addr
))
374 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&& local
->open_count
&&
375 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
376 /* run the interface in a "soft monitor" mode */
379 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
382 ieee80211_if_open(dev
);
383 ieee80211_start_soft_monitor(local
);
385 conf
.if_id
= dev
->ifindex
;
386 conf
.type
= sdata
->type
;
387 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
388 conf
.mac_addr
= NULL
;
390 conf
.mac_addr
= dev
->dev_addr
;
391 res
= local
->ops
->add_interface(local_to_hw(local
), &conf
);
393 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
)
394 ieee80211_start_hard_monitor(local
);
398 if (local
->open_count
== 0) {
400 tasklet_enable(&local
->tx_pending_tasklet
);
401 tasklet_enable(&local
->tasklet
);
402 if (local
->ops
->open
)
403 res
= local
->ops
->open(local_to_hw(local
));
405 res
= dev_open(local
->mdev
);
407 if (local
->ops
->stop
)
408 local
->ops
->stop(local_to_hw(local
));
410 res
= ieee80211_hw_config(local
);
411 if (res
&& local
->ops
->stop
)
412 local
->ops
->stop(local_to_hw(local
));
413 else if (!res
&& local
->apdev
)
414 dev_open(local
->apdev
);
418 if (local
->ops
->remove_interface
)
419 local
->ops
->remove_interface(local_to_hw(local
),
426 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
428 local
->hw
.conf
.flags
|= IEEE80211_CONF_RADIOTAP
;
430 ieee80211_if_config(dev
);
431 ieee80211_reset_erp_info(dev
);
432 ieee80211_enable_keys(sdata
);
435 if (sdata
->type
== IEEE80211_IF_TYPE_STA
&&
436 !local
->user_space_mlme
)
437 netif_carrier_off(dev
);
439 netif_carrier_on(dev
);
441 netif_start_queue(dev
);
445 static void ieee80211_if_shutdown(struct net_device
*dev
)
447 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
448 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
451 switch (sdata
->type
) {
452 case IEEE80211_IF_TYPE_STA
:
453 case IEEE80211_IF_TYPE_IBSS
:
454 sdata
->u
.sta
.state
= IEEE80211_DISABLED
;
455 del_timer_sync(&sdata
->u
.sta
.timer
);
457 * Holding the sub_if_lock for writing here blocks
458 * out the receive path and makes sure it's not
459 * currently processing a packet that may get
460 * added to the queue.
462 write_lock_bh(&local
->sub_if_lock
);
463 skb_queue_purge(&sdata
->u
.sta
.skb_queue
);
464 write_unlock_bh(&local
->sub_if_lock
);
466 if (!local
->ops
->hw_scan
&&
467 local
->scan_dev
== sdata
->dev
) {
468 local
->sta_scanning
= 0;
469 cancel_delayed_work(&local
->scan_work
);
471 flush_workqueue(local
->hw
.workqueue
);
476 static int ieee80211_stop(struct net_device
*dev
)
478 struct ieee80211_sub_if_data
*sdata
;
479 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
481 sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
483 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
&&
484 local
->open_count
> 1 &&
485 !(local
->hw
.flags
& IEEE80211_HW_MONITOR_DURING_OPER
)) {
486 /* remove "soft monitor" interface */
489 if (!local
->monitors
)
490 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
494 netif_stop_queue(dev
);
495 ieee80211_if_shutdown(dev
);
497 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
499 if (!local
->monitors
)
500 local
->hw
.conf
.flags
&= ~IEEE80211_CONF_RADIOTAP
;
502 /* disable all keys for as long as this netdev is down */
503 ieee80211_disable_keys(sdata
);
507 if (local
->open_count
== 0) {
508 if (netif_running(local
->mdev
))
509 dev_close(local
->mdev
);
511 dev_close(local
->apdev
);
512 if (local
->ops
->stop
)
513 local
->ops
->stop(local_to_hw(local
));
514 tasklet_disable(&local
->tx_pending_tasklet
);
515 tasklet_disable(&local
->tasklet
);
517 if (local
->ops
->remove_interface
) {
518 struct ieee80211_if_init_conf conf
;
520 conf
.if_id
= dev
->ifindex
;
521 conf
.type
= sdata
->type
;
522 conf
.mac_addr
= dev
->dev_addr
;
523 local
->ops
->remove_interface(local_to_hw(local
), &conf
);
526 ieee80211_start_hard_monitor(local
);
531 enum netif_tx_lock_class
{
536 static inline void netif_tx_lock_nested(struct net_device
*dev
, int subclass
)
538 spin_lock_nested(&dev
->_xmit_lock
, subclass
);
539 dev
->xmit_lock_owner
= smp_processor_id();
542 static void ieee80211_set_multicast_list(struct net_device
*dev
)
544 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
545 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
546 unsigned short flags
;
548 netif_tx_lock_nested(local
->mdev
, TX_LOCK_MASTER
);
549 if (((dev
->flags
& IFF_ALLMULTI
) != 0) ^
550 ((sdata
->flags
& IEEE80211_SDATA_ALLMULTI
) != 0)) {
551 if (sdata
->flags
& IEEE80211_SDATA_ALLMULTI
)
552 local
->iff_allmultis
--;
554 local
->iff_allmultis
++;
555 sdata
->flags
^= IEEE80211_SDATA_ALLMULTI
;
557 if (((dev
->flags
& IFF_PROMISC
) != 0) ^
558 ((sdata
->flags
& IEEE80211_SDATA_PROMISC
) != 0)) {
559 if (sdata
->flags
& IEEE80211_SDATA_PROMISC
)
560 local
->iff_promiscs
--;
562 local
->iff_promiscs
++;
563 sdata
->flags
^= IEEE80211_SDATA_PROMISC
;
565 if (dev
->mc_count
!= sdata
->mc_count
) {
566 local
->mc_count
= local
->mc_count
- sdata
->mc_count
+
568 sdata
->mc_count
= dev
->mc_count
;
570 if (local
->ops
->set_multicast_list
) {
571 flags
= local
->mdev
->flags
;
572 if (local
->iff_allmultis
)
573 flags
|= IFF_ALLMULTI
;
574 if (local
->iff_promiscs
)
575 flags
|= IFF_PROMISC
;
576 read_lock(&local
->sub_if_lock
);
577 local
->ops
->set_multicast_list(local_to_hw(local
), flags
,
579 read_unlock(&local
->sub_if_lock
);
581 netif_tx_unlock(local
->mdev
);
584 /* Must not be called for mdev and apdev */
585 void ieee80211_if_setup(struct net_device
*dev
)
588 dev
->hard_start_xmit
= ieee80211_subif_start_xmit
;
589 dev
->wireless_handlers
= &ieee80211_iw_handler_def
;
590 dev
->set_multicast_list
= ieee80211_set_multicast_list
;
591 dev
->change_mtu
= ieee80211_change_mtu
;
592 dev
->open
= ieee80211_open
;
593 dev
->stop
= ieee80211_stop
;
594 dev
->uninit
= ieee80211_if_reinit
;
595 dev
->destructor
= ieee80211_if_free
;
598 /* WDS specialties */
600 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
)
602 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
603 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
604 struct sta_info
*sta
;
605 DECLARE_MAC_BUF(mac
);
607 if (compare_ether_addr(remote_addr
, sdata
->u
.wds
.remote_addr
) == 0)
610 /* Create STA entry for the new peer */
611 sta
= sta_info_add(local
, dev
, remote_addr
, GFP_KERNEL
);
616 /* Remove STA entry for the old peer */
617 sta
= sta_info_get(local
, sdata
->u
.wds
.remote_addr
);
622 printk(KERN_DEBUG
"%s: could not find STA entry for WDS link "
624 dev
->name
, print_mac(mac
, sdata
->u
.wds
.remote_addr
));
627 /* Update WDS link data */
628 memcpy(&sdata
->u
.wds
.remote_addr
, remote_addr
, ETH_ALEN
);
633 /* everything else */
635 static int __ieee80211_if_config(struct net_device
*dev
,
636 struct sk_buff
*beacon
,
637 struct ieee80211_tx_control
*control
)
639 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
640 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
641 struct ieee80211_if_conf conf
;
642 static u8 scan_bssid
[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
644 if (!local
->ops
->config_interface
|| !netif_running(dev
))
647 memset(&conf
, 0, sizeof(conf
));
648 conf
.type
= sdata
->type
;
649 if (sdata
->type
== IEEE80211_IF_TYPE_STA
||
650 sdata
->type
== IEEE80211_IF_TYPE_IBSS
) {
651 if (local
->sta_scanning
&&
652 local
->scan_dev
== dev
)
653 conf
.bssid
= scan_bssid
;
655 conf
.bssid
= sdata
->u
.sta
.bssid
;
656 conf
.ssid
= sdata
->u
.sta
.ssid
;
657 conf
.ssid_len
= sdata
->u
.sta
.ssid_len
;
658 conf
.generic_elem
= sdata
->u
.sta
.extra_ie
;
659 conf
.generic_elem_len
= sdata
->u
.sta
.extra_ie_len
;
660 } else if (sdata
->type
== IEEE80211_IF_TYPE_AP
) {
661 conf
.ssid
= sdata
->u
.ap
.ssid
;
662 conf
.ssid_len
= sdata
->u
.ap
.ssid_len
;
663 conf
.generic_elem
= sdata
->u
.ap
.generic_elem
;
664 conf
.generic_elem_len
= sdata
->u
.ap
.generic_elem_len
;
665 conf
.beacon
= beacon
;
666 conf
.beacon_control
= control
;
668 return local
->ops
->config_interface(local_to_hw(local
),
669 dev
->ifindex
, &conf
);
672 int ieee80211_if_config(struct net_device
*dev
)
674 return __ieee80211_if_config(dev
, NULL
, NULL
);
677 int ieee80211_if_config_beacon(struct net_device
*dev
)
679 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
680 struct ieee80211_tx_control control
;
683 if (!(local
->hw
.flags
& IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE
))
685 skb
= ieee80211_beacon_get(local_to_hw(local
), dev
->ifindex
, &control
);
688 return __ieee80211_if_config(dev
, skb
, &control
);
691 int ieee80211_hw_config(struct ieee80211_local
*local
)
693 struct ieee80211_hw_mode
*mode
;
694 struct ieee80211_channel
*chan
;
697 if (local
->sta_scanning
) {
698 chan
= local
->scan_channel
;
699 mode
= local
->scan_hw_mode
;
701 chan
= local
->oper_channel
;
702 mode
= local
->oper_hw_mode
;
705 local
->hw
.conf
.channel
= chan
->chan
;
706 local
->hw
.conf
.channel_val
= chan
->val
;
707 local
->hw
.conf
.power_level
= chan
->power_level
;
708 local
->hw
.conf
.freq
= chan
->freq
;
709 local
->hw
.conf
.phymode
= mode
->mode
;
710 local
->hw
.conf
.antenna_max
= chan
->antenna_max
;
711 local
->hw
.conf
.chan
= chan
;
712 local
->hw
.conf
.mode
= mode
;
714 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
715 printk(KERN_DEBUG
"HW CONFIG: channel=%d freq=%d "
716 "phymode=%d\n", local
->hw
.conf
.channel
, local
->hw
.conf
.freq
,
717 local
->hw
.conf
.phymode
);
718 #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
720 if (local
->ops
->config
)
721 ret
= local
->ops
->config(local_to_hw(local
), &local
->hw
.conf
);
726 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
)
728 struct ieee80211_local
*local
= wdev_priv(dev
->ieee80211_ptr
);
729 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
730 if (local
->ops
->erp_ie_changed
)
731 local
->ops
->erp_ie_changed(local_to_hw(local
), changes
,
732 !!(sdata
->flags
& IEEE80211_SDATA_USE_PROTECTION
),
733 !(sdata
->flags
& IEEE80211_SDATA_SHORT_PREAMBLE
));
736 void ieee80211_reset_erp_info(struct net_device
*dev
)
738 struct ieee80211_sub_if_data
*sdata
= IEEE80211_DEV_TO_SUB_IF(dev
);
740 sdata
->flags
&= ~(IEEE80211_SDATA_USE_PROTECTION
|
741 IEEE80211_SDATA_SHORT_PREAMBLE
);
742 ieee80211_erp_info_change_notify(dev
,
743 IEEE80211_ERP_CHANGE_PROTECTION
|
744 IEEE80211_ERP_CHANGE_PREAMBLE
);
747 struct dev_mc_list
*ieee80211_get_mc_list_item(struct ieee80211_hw
*hw
,
748 struct dev_mc_list
*prev
,
751 struct ieee80211_local
*local
= hw_to_local(hw
);
752 struct ieee80211_sub_if_data
*sdata
= *ptr
;
753 struct dev_mc_list
*mc
;
759 if (!prev
|| !prev
->next
) {
761 sdata
= list_entry(sdata
->list
.next
,
762 struct ieee80211_sub_if_data
, list
);
764 sdata
= list_entry(local
->sub_if_list
.next
,
765 struct ieee80211_sub_if_data
, list
);
766 if (&sdata
->list
!= &local
->sub_if_list
)
767 mc
= sdata
->dev
->mc_list
;
776 EXPORT_SYMBOL(ieee80211_get_mc_list_item
);
778 void ieee80211_tx_status_irqsafe(struct ieee80211_hw
*hw
,
780 struct ieee80211_tx_status
*status
)
782 struct ieee80211_local
*local
= hw_to_local(hw
);
783 struct ieee80211_tx_status
*saved
;
786 skb
->dev
= local
->mdev
;
787 saved
= kmalloc(sizeof(struct ieee80211_tx_status
), GFP_ATOMIC
);
788 if (unlikely(!saved
)) {
790 printk(KERN_WARNING
"%s: Not enough memory, "
791 "dropping tx status", skb
->dev
->name
);
792 /* should be dev_kfree_skb_irq, but due to this function being
793 * named _irqsafe instead of just _irq we can't be sure that
794 * people won't call it from non-irq contexts */
795 dev_kfree_skb_any(skb
);
798 memcpy(saved
, status
, sizeof(struct ieee80211_tx_status
));
799 /* copy pointer to saved status into skb->cb for use by tasklet */
800 memcpy(skb
->cb
, &saved
, sizeof(saved
));
802 skb
->pkt_type
= IEEE80211_TX_STATUS_MSG
;
803 skb_queue_tail(status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
?
804 &local
->skb_queue
: &local
->skb_queue_unreliable
, skb
);
805 tmp
= skb_queue_len(&local
->skb_queue
) +
806 skb_queue_len(&local
->skb_queue_unreliable
);
807 while (tmp
> IEEE80211_IRQSAFE_QUEUE_LIMIT
&&
808 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
809 memcpy(&saved
, skb
->cb
, sizeof(saved
));
811 dev_kfree_skb_irq(skb
);
813 I802_DEBUG_INC(local
->tx_status_drop
);
815 tasklet_schedule(&local
->tasklet
);
817 EXPORT_SYMBOL(ieee80211_tx_status_irqsafe
);
819 static void ieee80211_tasklet_handler(unsigned long data
)
821 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
823 struct ieee80211_rx_status rx_status
;
824 struct ieee80211_tx_status
*tx_status
;
826 while ((skb
= skb_dequeue(&local
->skb_queue
)) ||
827 (skb
= skb_dequeue(&local
->skb_queue_unreliable
))) {
828 switch (skb
->pkt_type
) {
829 case IEEE80211_RX_MSG
:
830 /* status is in skb->cb */
831 memcpy(&rx_status
, skb
->cb
, sizeof(rx_status
));
832 /* Clear skb->type in order to not confuse kernel
835 __ieee80211_rx(local_to_hw(local
), skb
, &rx_status
);
837 case IEEE80211_TX_STATUS_MSG
:
838 /* get pointer to saved status out of skb->cb */
839 memcpy(&tx_status
, skb
->cb
, sizeof(tx_status
));
841 ieee80211_tx_status(local_to_hw(local
),
845 default: /* should never get here! */
846 printk(KERN_ERR
"%s: Unknown message type (%d)\n",
847 local
->mdev
->name
, skb
->pkt_type
);
854 /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
855 * make a prepared TX frame (one that has been given to hw) to look like brand
856 * new IEEE 802.11 frame that is ready to go through TX processing again.
857 * Also, tx_packet_data in cb is restored from tx_control. */
858 static void ieee80211_remove_tx_extra(struct ieee80211_local
*local
,
859 struct ieee80211_key
*key
,
861 struct ieee80211_tx_control
*control
)
863 int hdrlen
, iv_len
, mic_len
;
864 struct ieee80211_tx_packet_data
*pkt_data
;
866 pkt_data
= (struct ieee80211_tx_packet_data
*)skb
->cb
;
867 pkt_data
->ifindex
= control
->ifindex
;
869 if (control
->flags
& IEEE80211_TXCTL_REQ_TX_STATUS
)
870 pkt_data
->flags
|= IEEE80211_TXPD_REQ_TX_STATUS
;
871 if (control
->flags
& IEEE80211_TXCTL_DO_NOT_ENCRYPT
)
872 pkt_data
->flags
|= IEEE80211_TXPD_DO_NOT_ENCRYPT
;
873 if (control
->flags
& IEEE80211_TXCTL_REQUEUE
)
874 pkt_data
->flags
|= IEEE80211_TXPD_REQUEUE
;
875 if (control
->type
== IEEE80211_IF_TYPE_MGMT
)
876 pkt_data
->flags
|= IEEE80211_TXPD_MGMT_IFACE
;
877 pkt_data
->queue
= control
->queue
;
879 hdrlen
= ieee80211_get_hdrlen_from_skb(skb
);
884 switch (key
->conf
.alg
) {
887 mic_len
= WEP_ICV_LEN
;
890 iv_len
= TKIP_IV_LEN
;
891 mic_len
= TKIP_ICV_LEN
;
894 iv_len
= CCMP_HDR_LEN
;
895 mic_len
= CCMP_MIC_LEN
;
901 if (skb
->len
>= mic_len
&&
902 !(key
->flags
& KEY_FLAG_UPLOADED_TO_HARDWARE
))
903 skb_trim(skb
, skb
->len
- mic_len
);
904 if (skb
->len
>= iv_len
&& skb
->len
> hdrlen
) {
905 memmove(skb
->data
+ iv_len
, skb
->data
, hdrlen
);
906 skb_pull(skb
, iv_len
);
911 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
912 u16 fc
= le16_to_cpu(hdr
->frame_control
);
913 if ((fc
& 0x8C) == 0x88) /* QoS Control Field */ {
914 fc
&= ~IEEE80211_STYPE_QOS_DATA
;
915 hdr
->frame_control
= cpu_to_le16(fc
);
916 memmove(skb
->data
+ 2, skb
->data
, hdrlen
- 2);
922 void ieee80211_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
923 struct ieee80211_tx_status
*status
)
925 struct sk_buff
*skb2
;
926 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) skb
->data
;
927 struct ieee80211_local
*local
= hw_to_local(hw
);
930 struct ieee80211_tx_status_rtap_hdr
*rthdr
;
931 struct ieee80211_sub_if_data
*sdata
;
936 "%s: ieee80211_tx_status called with NULL status\n",
942 if (status
->excessive_retries
) {
943 struct sta_info
*sta
;
944 sta
= sta_info_get(local
, hdr
->addr1
);
946 if (sta
->flags
& WLAN_STA_PS
) {
947 /* The STA is in power save mode, so assume
948 * that this TX packet failed because of that.
950 status
->excessive_retries
= 0;
951 status
->flags
|= IEEE80211_TX_STATUS_TX_FILTERED
;
957 if (status
->flags
& IEEE80211_TX_STATUS_TX_FILTERED
) {
958 struct sta_info
*sta
;
959 sta
= sta_info_get(local
, hdr
->addr1
);
961 sta
->tx_filtered_count
++;
963 /* Clear the TX filter mask for this STA when sending
964 * the next packet. If the STA went to power save mode,
965 * this will happen when it is waking up for the next
967 sta
->clear_dst_mask
= 1;
969 /* TODO: Is the WLAN_STA_PS flag always set here or is
970 * the race between RX and TX status causing some
971 * packets to be filtered out before 80211.o gets an
972 * update for PS status? This seems to be the case, so
973 * no changes are likely to be needed. */
974 if (sta
->flags
& WLAN_STA_PS
&&
975 skb_queue_len(&sta
->tx_filtered
) <
977 ieee80211_remove_tx_extra(local
, sta
->key
,
980 skb_queue_tail(&sta
->tx_filtered
, skb
);
981 } else if (!(sta
->flags
& WLAN_STA_PS
) &&
982 !(status
->control
.flags
& IEEE80211_TXCTL_REQUEUE
)) {
983 /* Software retry the packet once */
984 status
->control
.flags
|= IEEE80211_TXCTL_REQUEUE
;
985 ieee80211_remove_tx_extra(local
, sta
->key
,
990 if (net_ratelimit()) {
991 printk(KERN_DEBUG
"%s: dropped TX "
992 "filtered frame queue_len=%d "
997 !!(sta
->flags
& WLAN_STA_PS
),
1006 /* FIXME: STUPID to call this with both local and local->mdev */
1007 rate_control_tx_status(local
, local
->mdev
, skb
, status
);
1010 ieee80211_led_tx(local
, 0);
1013 * Fragments are passed to low-level drivers as separate skbs, so these
1014 * are actually fragments, not frames. Update frame counters only for
1015 * the first fragment of the frame. */
1017 frag
= le16_to_cpu(hdr
->seq_ctrl
) & IEEE80211_SCTL_FRAG
;
1018 type
= le16_to_cpu(hdr
->frame_control
) & IEEE80211_FCTL_FTYPE
;
1020 if (status
->flags
& IEEE80211_TX_STATUS_ACK
) {
1022 local
->dot11TransmittedFrameCount
++;
1023 if (is_multicast_ether_addr(hdr
->addr1
))
1024 local
->dot11MulticastTransmittedFrameCount
++;
1025 if (status
->retry_count
> 0)
1026 local
->dot11RetryCount
++;
1027 if (status
->retry_count
> 1)
1028 local
->dot11MultipleRetryCount
++;
1031 /* This counter shall be incremented for an acknowledged MPDU
1032 * with an individual address in the address 1 field or an MPDU
1033 * with a multicast address in the address 1 field of type Data
1035 if (!is_multicast_ether_addr(hdr
->addr1
) ||
1036 type
== IEEE80211_FTYPE_DATA
||
1037 type
== IEEE80211_FTYPE_MGMT
)
1038 local
->dot11TransmittedFragmentCount
++;
1041 local
->dot11FailedCount
++;
1044 msg_type
= (status
->flags
& IEEE80211_TX_STATUS_ACK
) ?
1045 ieee80211_msg_tx_callback_ack
: ieee80211_msg_tx_callback_fail
;
1047 /* this was a transmitted frame, but now we want to reuse it */
1050 if ((status
->control
.flags
& IEEE80211_TXCTL_REQ_TX_STATUS
) &&
1052 if (local
->monitors
) {
1053 skb2
= skb_clone(skb
, GFP_ATOMIC
);
1060 /* Send frame to hostapd */
1061 ieee80211_rx_mgmt(local
, skb2
, NULL
, msg_type
);
1067 if (!local
->monitors
) {
1072 /* send frame to monitor interfaces now */
1074 if (skb_headroom(skb
) < sizeof(*rthdr
)) {
1075 printk(KERN_ERR
"ieee80211_tx_status: headroom too small\n");
1080 rthdr
= (struct ieee80211_tx_status_rtap_hdr
*)
1081 skb_push(skb
, sizeof(*rthdr
));
1083 memset(rthdr
, 0, sizeof(*rthdr
));
1084 rthdr
->hdr
.it_len
= cpu_to_le16(sizeof(*rthdr
));
1085 rthdr
->hdr
.it_present
=
1086 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS
) |
1087 (1 << IEEE80211_RADIOTAP_DATA_RETRIES
));
1089 if (!(status
->flags
& IEEE80211_TX_STATUS_ACK
) &&
1090 !is_multicast_ether_addr(hdr
->addr1
))
1091 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL
);
1093 if ((status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
) &&
1094 (status
->control
.flags
& IEEE80211_TXCTL_USE_CTS_PROTECT
))
1095 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS
);
1096 else if (status
->control
.flags
& IEEE80211_TXCTL_USE_RTS_CTS
)
1097 rthdr
->tx_flags
|= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS
);
1099 rthdr
->data_retries
= status
->retry_count
;
1101 read_lock(&local
->sub_if_lock
);
1102 monitors
= local
->monitors
;
1103 list_for_each_entry(sdata
, &local
->sub_if_list
, list
) {
1105 * Using the monitors counter is possibly racy, but
1106 * if the value is wrong we simply either clone the skb
1107 * once too much or forget sending it to one monitor iface
1108 * The latter case isn't nice but fixing the race is much
1111 if (!monitors
|| !skb
)
1114 if (sdata
->type
== IEEE80211_IF_TYPE_MNTR
) {
1115 if (!netif_running(sdata
->dev
))
1119 skb2
= skb_clone(skb
, GFP_KERNEL
);
1122 skb
->dev
= sdata
->dev
;
1123 /* XXX: is this sufficient for BPF? */
1124 skb_set_mac_header(skb
, 0);
1125 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1126 skb
->pkt_type
= PACKET_OTHERHOST
;
1127 skb
->protocol
= htons(ETH_P_802_2
);
1128 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1134 read_unlock(&local
->sub_if_lock
);
1138 EXPORT_SYMBOL(ieee80211_tx_status
);
1140 struct ieee80211_hw
*ieee80211_alloc_hw(size_t priv_data_len
,
1141 const struct ieee80211_ops
*ops
)
1143 struct net_device
*mdev
;
1144 struct ieee80211_local
*local
;
1145 struct ieee80211_sub_if_data
*sdata
;
1147 struct wiphy
*wiphy
;
1149 /* Ensure 32-byte alignment of our private data and hw private data.
1150 * We use the wiphy priv data for both our ieee80211_local and for
1151 * the driver's private data
1153 * In memory it'll be like this:
1155 * +-------------------------+
1157 * +-------------------------+
1158 * | struct ieee80211_local |
1159 * +-------------------------+
1160 * | driver's private data |
1161 * +-------------------------+
1164 priv_size
= ((sizeof(struct ieee80211_local
) +
1165 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
) +
1168 wiphy
= wiphy_new(&mac80211_config_ops
, priv_size
);
1173 wiphy
->privid
= mac80211_wiphy_privid
;
1175 local
= wiphy_priv(wiphy
);
1176 local
->hw
.wiphy
= wiphy
;
1178 local
->hw
.priv
= (char *)local
+
1179 ((sizeof(struct ieee80211_local
) +
1180 NETDEV_ALIGN_CONST
) & ~NETDEV_ALIGN_CONST
);
1183 BUG_ON(!ops
->config
);
1184 BUG_ON(!ops
->add_interface
);
1187 /* for now, mdev needs sub_if_data :/ */
1188 mdev
= alloc_netdev(sizeof(struct ieee80211_sub_if_data
),
1189 "wmaster%d", ether_setup
);
1195 sdata
= IEEE80211_DEV_TO_SUB_IF(mdev
);
1196 mdev
->ieee80211_ptr
= &sdata
->wdev
;
1197 sdata
->wdev
.wiphy
= wiphy
;
1199 local
->hw
.queues
= 1; /* default */
1202 local
->rx_pre_handlers
= ieee80211_rx_pre_handlers
;
1203 local
->rx_handlers
= ieee80211_rx_handlers
;
1204 local
->tx_handlers
= ieee80211_tx_handlers
;
1206 local
->bridge_packets
= 1;
1208 local
->rts_threshold
= IEEE80211_MAX_RTS_THRESHOLD
;
1209 local
->fragmentation_threshold
= IEEE80211_MAX_FRAG_THRESHOLD
;
1210 local
->short_retry_limit
= 7;
1211 local
->long_retry_limit
= 4;
1212 local
->hw
.conf
.radio_enabled
= 1;
1214 local
->enabled_modes
= ~0;
1216 INIT_LIST_HEAD(&local
->modes_list
);
1218 rwlock_init(&local
->sub_if_lock
);
1219 INIT_LIST_HEAD(&local
->sub_if_list
);
1221 INIT_DELAYED_WORK(&local
->scan_work
, ieee80211_sta_scan_work
);
1222 ieee80211_rx_bss_list_init(mdev
);
1224 sta_info_init(local
);
1226 mdev
->hard_start_xmit
= ieee80211_master_start_xmit
;
1227 mdev
->open
= ieee80211_master_open
;
1228 mdev
->stop
= ieee80211_master_stop
;
1229 mdev
->type
= ARPHRD_IEEE80211
;
1230 mdev
->hard_header_parse
= header_parse_80211
;
1232 sdata
->type
= IEEE80211_IF_TYPE_AP
;
1234 sdata
->local
= local
;
1235 sdata
->u
.ap
.force_unicast_rateidx
= -1;
1236 sdata
->u
.ap
.max_ratectrl_rateidx
= -1;
1237 ieee80211_if_sdata_init(sdata
);
1238 list_add_tail(&sdata
->list
, &local
->sub_if_list
);
1240 tasklet_init(&local
->tx_pending_tasklet
, ieee80211_tx_pending
,
1241 (unsigned long)local
);
1242 tasklet_disable(&local
->tx_pending_tasklet
);
1244 tasklet_init(&local
->tasklet
,
1245 ieee80211_tasklet_handler
,
1246 (unsigned long) local
);
1247 tasklet_disable(&local
->tasklet
);
1249 skb_queue_head_init(&local
->skb_queue
);
1250 skb_queue_head_init(&local
->skb_queue_unreliable
);
1252 return local_to_hw(local
);
1254 EXPORT_SYMBOL(ieee80211_alloc_hw
);
1256 int ieee80211_register_hw(struct ieee80211_hw
*hw
)
1258 struct ieee80211_local
*local
= hw_to_local(hw
);
1262 result
= wiphy_register(local
->hw
.wiphy
);
1266 name
= wiphy_dev(local
->hw
.wiphy
)->driver
->name
;
1267 local
->hw
.workqueue
= create_singlethread_workqueue(name
);
1268 if (!local
->hw
.workqueue
) {
1270 goto fail_workqueue
;
1274 * The hardware needs headroom for sending the frame,
1275 * and we need some headroom for passing the frame to monitor
1276 * interfaces, but never both at the same time.
1278 local
->tx_headroom
= max_t(unsigned int , local
->hw
.extra_tx_headroom
,
1279 sizeof(struct ieee80211_tx_status_rtap_hdr
));
1281 debugfs_hw_add(local
);
1283 local
->hw
.conf
.beacon_int
= 1000;
1285 local
->wstats_flags
|= local
->hw
.max_rssi
?
1286 IW_QUAL_LEVEL_UPDATED
: IW_QUAL_LEVEL_INVALID
;
1287 local
->wstats_flags
|= local
->hw
.max_signal
?
1288 IW_QUAL_QUAL_UPDATED
: IW_QUAL_QUAL_INVALID
;
1289 local
->wstats_flags
|= local
->hw
.max_noise
?
1290 IW_QUAL_NOISE_UPDATED
: IW_QUAL_NOISE_INVALID
;
1291 if (local
->hw
.max_rssi
< 0 || local
->hw
.max_noise
< 0)
1292 local
->wstats_flags
|= IW_QUAL_DBM
;
1294 result
= sta_info_start(local
);
1299 result
= dev_alloc_name(local
->mdev
, local
->mdev
->name
);
1303 memcpy(local
->mdev
->dev_addr
, local
->hw
.wiphy
->perm_addr
, ETH_ALEN
);
1304 SET_NETDEV_DEV(local
->mdev
, wiphy_dev(local
->hw
.wiphy
));
1306 result
= register_netdevice(local
->mdev
);
1310 ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1312 result
= ieee80211_init_rate_ctrl_alg(local
, NULL
);
1314 printk(KERN_DEBUG
"%s: Failed to initialize rate control "
1315 "algorithm\n", local
->mdev
->name
);
1319 result
= ieee80211_wep_init(local
);
1322 printk(KERN_DEBUG
"%s: Failed to initialize wep\n",
1327 ieee80211_install_qdisc(local
->mdev
);
1329 /* add one default STA interface */
1330 result
= ieee80211_if_add(local
->mdev
, "wlan%d", NULL
,
1331 IEEE80211_IF_TYPE_STA
);
1333 printk(KERN_WARNING
"%s: Failed to add default virtual iface\n",
1336 local
->reg_state
= IEEE80211_DEV_REGISTERED
;
1339 ieee80211_led_init(local
);
1344 rate_control_deinitialize(local
);
1346 ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local
->mdev
));
1347 unregister_netdevice(local
->mdev
);
1350 sta_info_stop(local
);
1352 debugfs_hw_del(local
);
1353 destroy_workqueue(local
->hw
.workqueue
);
1355 wiphy_unregister(local
->hw
.wiphy
);
1358 EXPORT_SYMBOL(ieee80211_register_hw
);
1360 int ieee80211_register_hwmode(struct ieee80211_hw
*hw
,
1361 struct ieee80211_hw_mode
*mode
)
1363 struct ieee80211_local
*local
= hw_to_local(hw
);
1364 struct ieee80211_rate
*rate
;
1367 INIT_LIST_HEAD(&mode
->list
);
1368 list_add_tail(&mode
->list
, &local
->modes_list
);
1370 local
->hw_modes
|= (1 << mode
->mode
);
1371 for (i
= 0; i
< mode
->num_rates
; i
++) {
1372 rate
= &(mode
->rates
[i
]);
1373 rate
->rate_inv
= CHAN_UTIL_RATE_LCM
/ rate
->rate
;
1375 ieee80211_prepare_rates(local
, mode
);
1377 if (!local
->oper_hw_mode
) {
1378 /* Default to this mode */
1379 local
->hw
.conf
.phymode
= mode
->mode
;
1380 local
->oper_hw_mode
= local
->scan_hw_mode
= mode
;
1381 local
->oper_channel
= local
->scan_channel
= &mode
->channels
[0];
1382 local
->hw
.conf
.mode
= local
->oper_hw_mode
;
1383 local
->hw
.conf
.chan
= local
->oper_channel
;
1386 if (!(hw
->flags
& IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
))
1387 ieee80211_set_default_regdomain(mode
);
1391 EXPORT_SYMBOL(ieee80211_register_hwmode
);
1393 void ieee80211_unregister_hw(struct ieee80211_hw
*hw
)
1395 struct ieee80211_local
*local
= hw_to_local(hw
);
1396 struct ieee80211_sub_if_data
*sdata
, *tmp
;
1397 struct list_head tmp_list
;
1400 tasklet_kill(&local
->tx_pending_tasklet
);
1401 tasklet_kill(&local
->tasklet
);
1405 BUG_ON(local
->reg_state
!= IEEE80211_DEV_REGISTERED
);
1407 local
->reg_state
= IEEE80211_DEV_UNREGISTERED
;
1409 ieee80211_if_del_mgmt(local
);
1411 write_lock_bh(&local
->sub_if_lock
);
1412 list_replace_init(&local
->sub_if_list
, &tmp_list
);
1413 write_unlock_bh(&local
->sub_if_lock
);
1415 list_for_each_entry_safe(sdata
, tmp
, &tmp_list
, list
)
1416 __ieee80211_if_del(local
, sdata
);
1420 ieee80211_rx_bss_list_deinit(local
->mdev
);
1421 ieee80211_clear_tx_pending(local
);
1422 sta_info_stop(local
);
1423 rate_control_deinitialize(local
);
1424 debugfs_hw_del(local
);
1426 for (i
= 0; i
< NUM_IEEE80211_MODES
; i
++) {
1427 kfree(local
->supp_rates
[i
]);
1428 kfree(local
->basic_rates
[i
]);
1431 if (skb_queue_len(&local
->skb_queue
)
1432 || skb_queue_len(&local
->skb_queue_unreliable
))
1433 printk(KERN_WARNING
"%s: skb_queue not empty\n",
1435 skb_queue_purge(&local
->skb_queue
);
1436 skb_queue_purge(&local
->skb_queue_unreliable
);
1438 destroy_workqueue(local
->hw
.workqueue
);
1439 wiphy_unregister(local
->hw
.wiphy
);
1440 ieee80211_wep_free(local
);
1441 ieee80211_led_exit(local
);
1443 EXPORT_SYMBOL(ieee80211_unregister_hw
);
1445 void ieee80211_free_hw(struct ieee80211_hw
*hw
)
1447 struct ieee80211_local
*local
= hw_to_local(hw
);
1449 ieee80211_if_free(local
->mdev
);
1450 wiphy_free(local
->hw
.wiphy
);
1452 EXPORT_SYMBOL(ieee80211_free_hw
);
1454 static int __init
ieee80211_init(void)
1456 struct sk_buff
*skb
;
1459 BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data
) > sizeof(skb
->cb
));
1461 ret
= ieee80211_wme_register();
1463 printk(KERN_DEBUG
"ieee80211_init: failed to "
1464 "initialize WME (err=%d)\n", ret
);
1468 ieee80211_debugfs_netdev_init();
1469 ieee80211_regdomain_init();
1474 static void __exit
ieee80211_exit(void)
1476 ieee80211_wme_unregister();
1477 ieee80211_debugfs_netdev_exit();
1481 subsys_initcall(ieee80211_init
);
1482 module_exit(ieee80211_exit
);
1484 MODULE_DESCRIPTION("IEEE 802.11 subsystem");
1485 MODULE_LICENSE("GPL");