2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005, 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.
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/if_ether.h>
17 #include <linux/interrupt.h>
18 #include <linux/list.h>
19 #include <linux/netdevice.h>
20 #include <linux/skbuff.h>
21 #include <linux/workqueue.h>
22 #include <linux/types.h>
23 #include <linux/spinlock.h>
24 #include <linux/etherdevice.h>
25 #include <net/wireless.h>
26 #include "ieee80211_key.h"
29 /* ieee80211.o internal definitions, etc. These are not included into
30 * low-level drivers. */
33 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
34 #endif /* ETH_P_PAE */
36 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
38 struct ieee80211_local
;
40 #define BIT(x) (1 << (x))
42 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
44 /* Maximum number of broadcast/multicast frames to buffer when some of the
45 * associated stations are using power saving. */
46 #define AP_MAX_BC_BUFFER 128
48 /* Maximum number of frames buffered to all STAs, including multicast frames.
49 * Note: increasing this limit increases the potential memory requirement. Each
50 * frame can be up to about 2 kB long. */
51 #define TOTAL_MAX_TX_BUFFER 512
53 /* Required encryption head and tailroom */
54 #define IEEE80211_ENCRYPT_HEADROOM 8
55 #define IEEE80211_ENCRYPT_TAILROOM 12
57 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
58 * reception of at least three fragmented frames. This limit can be increased
59 * by changing this define, at the cost of slower frame reassembly and
60 * increased memory use (about 2 kB of RAM per entry). */
61 #define IEEE80211_FRAGMENT_MAX 4
63 struct ieee80211_fragment_entry
{
64 unsigned long first_frag_time
;
66 unsigned int rx_queue
;
67 unsigned int last_frag
;
68 unsigned int extra_len
;
69 struct sk_buff_head skb_list
;
70 int ccmp
; /* Whether fragments were encrypted with CCMP */
71 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
75 struct ieee80211_sta_bss
{
76 struct list_head list
;
77 struct ieee80211_sta_bss
*hnext
;
81 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
83 u16 capability
; /* host byte order */
87 int rssi
, signal
, noise
;
94 #define IEEE80211_MAX_SUPP_RATES 32
95 u8 supp_rates
[IEEE80211_MAX_SUPP_RATES
];
96 size_t supp_rates_len
;
101 unsigned long last_update
;
103 /* during assocation, we save an ERP value from a probe response so
104 * that we can feed ERP info to the driver when handling the
105 * association completes. these fields probably won't be up-to-date
106 * otherwise, you probably don't want to use them. */
113 TXRX_CONTINUE
, TXRX_DROP
, TXRX_QUEUED
114 } ieee80211_txrx_result
;
116 /* flags used in struct ieee80211_txrx_data.flags */
117 /* whether the MSDU was fragmented */
118 #define IEEE80211_TXRXD_FRAGMENTED BIT(0)
119 #define IEEE80211_TXRXD_TXUNICAST BIT(1)
120 #define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2)
121 #define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3)
122 #define IEEE80211_TXRXD_RXIN_SCAN BIT(4)
123 /* frame is destined to interface currently processed (incl. multicast frames) */
124 #define IEEE80211_TXRXD_RXRA_MATCH BIT(5)
125 struct ieee80211_txrx_data
{
127 struct net_device
*dev
;
128 struct ieee80211_local
*local
;
129 struct ieee80211_sub_if_data
*sdata
;
130 struct sta_info
*sta
;
132 struct ieee80211_key
*key
;
136 struct ieee80211_tx_control
*control
;
137 struct ieee80211_hw_mode
*mode
;
138 struct ieee80211_rate
*rate
;
139 /* use this rate (if set) for last fragment; rate can
140 * be set to lower rate for the first fragments, e.g.,
141 * when using CTS protection with IEEE 802.11g. */
142 struct ieee80211_rate
*last_frag_rate
;
143 int last_frag_hwrate
;
146 /* Extra fragments (in addition to the first fragment
149 struct sk_buff
**extra_frag
;
152 struct ieee80211_rx_status
*status
;
153 int sent_ps_buffered
;
162 /* flags used in struct ieee80211_tx_packet_data.flags */
163 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
164 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
165 #define IEEE80211_TXPD_REQUEUE BIT(2)
166 #define IEEE80211_TXPD_MGMT_IFACE BIT(3)
167 /* Stored in sk_buff->cb */
168 struct ieee80211_tx_packet_data
{
170 unsigned long jiffies
;
175 struct ieee80211_tx_stored_packet
{
176 struct ieee80211_tx_control control
;
179 struct sk_buff
**extra_frag
;
180 int last_frag_rateidx
;
181 int last_frag_hwrate
;
182 struct ieee80211_rate
*last_frag_rate
;
183 unsigned int last_frag_rate_ctrl_probe
;
186 typedef ieee80211_txrx_result (*ieee80211_tx_handler
)
187 (struct ieee80211_txrx_data
*tx
);
189 typedef ieee80211_txrx_result (*ieee80211_rx_handler
)
190 (struct ieee80211_txrx_data
*rx
);
192 struct ieee80211_if_ap
{
193 u8
*beacon_head
, *beacon_tail
;
194 int beacon_head_len
, beacon_tail_len
;
196 struct list_head vlans
;
198 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
201 size_t generic_elem_len
;
203 /* yes, this looks ugly, but guarantees that we can later use
205 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
206 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
207 atomic_t num_sta_ps
; /* number of stations in PS mode */
208 struct sk_buff_head ps_bc_buf
;
209 int dtim_period
, dtim_count
;
210 int force_unicast_rateidx
; /* forced TX rateidx for unicast frames */
211 int max_ratectrl_rateidx
; /* max TX rateidx for rate control */
212 int num_beacons
; /* number of TXed beacon frames for this BSS */
215 struct ieee80211_if_wds
{
216 u8 remote_addr
[ETH_ALEN
];
217 struct sta_info
*sta
;
220 struct ieee80211_if_vlan
{
221 struct ieee80211_sub_if_data
*ap
;
222 struct list_head list
;
225 /* flags used in struct ieee80211_if_sta.flags */
226 #define IEEE80211_STA_SSID_SET BIT(0)
227 #define IEEE80211_STA_BSSID_SET BIT(1)
228 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
229 #define IEEE80211_STA_AUTHENTICATED BIT(3)
230 #define IEEE80211_STA_ASSOCIATED BIT(4)
231 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
232 #define IEEE80211_STA_CREATE_IBSS BIT(6)
233 #define IEEE80211_STA_MIXED_CELL BIT(7)
234 #define IEEE80211_STA_WMM_ENABLED BIT(8)
235 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
236 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
237 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
238 struct ieee80211_if_sta
{
240 IEEE80211_DISABLED
, IEEE80211_AUTHENTICATE
,
241 IEEE80211_ASSOCIATE
, IEEE80211_ASSOCIATED
,
242 IEEE80211_IBSS_SEARCH
, IEEE80211_IBSS_JOINED
244 struct timer_list timer
;
245 struct work_struct work
;
246 u8 bssid
[ETH_ALEN
], prev_bssid
[ETH_ALEN
];
247 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
251 u8
*extra_ie
; /* to be added to the end of AssocReq */
254 /* The last AssocReq/Resp IEs */
255 u8
*assocreq_ies
, *assocresp_ies
;
256 size_t assocreq_ies_len
, assocresp_ies_len
;
258 int auth_tries
, assoc_tries
;
261 #define IEEE80211_STA_REQ_SCAN 0
262 #define IEEE80211_STA_REQ_AUTH 1
263 #define IEEE80211_STA_REQ_RUN 2
264 unsigned long request
;
265 struct sk_buff_head skb_queue
;
267 int key_management_enabled
;
268 unsigned long last_probe
;
270 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
271 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
272 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
273 unsigned int auth_algs
; /* bitfield of allowed auth algs */
274 int auth_alg
; /* currently used IEEE 802.11 authentication algorithm */
275 int auth_transaction
;
277 unsigned long ibss_join_req
;
278 struct sk_buff
*probe_resp
; /* ProbeResp template for IBSS */
281 int wmm_last_param_set
;
285 /* flags used in struct ieee80211_sub_if_data.flags */
286 #define IEEE80211_SDATA_ALLMULTI BIT(0)
287 #define IEEE80211_SDATA_PROMISC BIT(1)
288 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */
289 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon
290 * generator reports that there are no present stations that cannot support short
292 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3)
293 struct ieee80211_sub_if_data
{
294 struct list_head list
;
295 enum ieee80211_if_types type
;
297 struct wireless_dev wdev
;
300 struct list_head key_list
;
302 struct net_device
*dev
;
303 struct ieee80211_local
*local
;
307 int drop_unencrypted
;
308 int eapol
; /* 0 = process EAPOL frames as normal data frames,
309 * 1 = send EAPOL frames through wlan#ap to hostapd
311 int ieee802_1x
; /* IEEE 802.1X PAE - drop packet to/from unauthorized
316 /* Fragment table for host-based reassembly */
317 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
318 unsigned int fragment_next
;
320 #define NUM_DEFAULT_KEYS 4
321 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
];
322 struct ieee80211_key
*default_key
;
324 struct ieee80211_if_ap
*bss
; /* BSS that this device belongs to */
327 struct ieee80211_if_ap ap
;
328 struct ieee80211_if_wds wds
;
329 struct ieee80211_if_vlan vlan
;
330 struct ieee80211_if_sta sta
;
335 #ifdef CONFIG_MAC80211_DEBUGFS
336 struct dentry
*debugfsdir
;
339 struct dentry
*channel_use
;
340 struct dentry
*drop_unencrypted
;
341 struct dentry
*eapol
;
342 struct dentry
*ieee8021_x
;
343 struct dentry
*state
;
344 struct dentry
*bssid
;
345 struct dentry
*prev_bssid
;
346 struct dentry
*ssid_len
;
348 struct dentry
*ap_capab
;
349 struct dentry
*capab
;
350 struct dentry
*extra_ie_len
;
351 struct dentry
*auth_tries
;
352 struct dentry
*assoc_tries
;
353 struct dentry
*auth_algs
;
354 struct dentry
*auth_alg
;
355 struct dentry
*auth_transaction
;
356 struct dentry
*flags
;
359 struct dentry
*channel_use
;
360 struct dentry
*drop_unencrypted
;
361 struct dentry
*eapol
;
362 struct dentry
*ieee8021_x
;
363 struct dentry
*num_sta_ps
;
364 struct dentry
*dtim_period
;
365 struct dentry
*dtim_count
;
366 struct dentry
*num_beacons
;
367 struct dentry
*force_unicast_rateidx
;
368 struct dentry
*max_ratectrl_rateidx
;
369 struct dentry
*num_buffered_multicast
;
370 struct dentry
*beacon_head_len
;
371 struct dentry
*beacon_tail_len
;
374 struct dentry
*channel_use
;
375 struct dentry
*drop_unencrypted
;
376 struct dentry
*eapol
;
377 struct dentry
*ieee8021_x
;
381 struct dentry
*channel_use
;
382 struct dentry
*drop_unencrypted
;
383 struct dentry
*eapol
;
384 struct dentry
*ieee8021_x
;
389 struct dentry
*default_key
;
394 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
397 IEEE80211_RX_MSG
= 1,
398 IEEE80211_TX_STATUS_MSG
= 2,
401 struct ieee80211_local
{
402 /* embed the driver visible part.
403 * don't cast (use the static inlines below), but we keep
404 * it first anyway so they become a no-op */
405 struct ieee80211_hw hw
;
407 const struct ieee80211_ops
*ops
;
409 /* List of registered struct ieee80211_hw_mode */
410 struct list_head modes_list
;
412 struct net_device
*mdev
; /* wmaster# - "master" 802.11 device */
413 struct net_device
*apdev
; /* wlan#ap - management frames (hostapd) */
416 unsigned int filter_flags
; /* FIF_* */
417 struct iw_statistics wstats
;
419 int tx_headroom
; /* required headroom for hardware/radiotap */
422 IEEE80211_DEV_UNINITIALIZED
= 0,
423 IEEE80211_DEV_REGISTERED
,
424 IEEE80211_DEV_UNREGISTERED
,
427 /* Tasklet and skb queue to process calls from IRQ mode. All frames
428 * added to skb_queue will be processed, but frames in
429 * skb_queue_unreliable may be dropped if the total length of these
430 * queues increases over the limit. */
431 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
432 struct tasklet_struct tasklet
;
433 struct sk_buff_head skb_queue
;
434 struct sk_buff_head skb_queue_unreliable
;
436 /* Station data structures */
437 rwlock_t sta_lock
; /* protects STA data structures */
438 int num_sta
; /* number of stations in sta_list */
439 struct list_head sta_list
;
440 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
441 struct timer_list sta_cleanup
;
443 unsigned long state
[NUM_TX_DATA_QUEUES
];
444 struct ieee80211_tx_stored_packet pending_packet
[NUM_TX_DATA_QUEUES
];
445 struct tasklet_struct tx_pending_tasklet
;
447 /* number of interfaces with corresponding IFF_ flags */
448 atomic_t iff_allmultis
, iff_promiscs
;
450 struct rate_control_ref
*rate_ctrl
;
452 /* Supported and basic rate filters for different modes. These are
453 * pointers to -1 terminated lists and rates in 100 kbps units. */
454 int *supp_rates
[NUM_IEEE80211_MODES
];
455 int *basic_rates
[NUM_IEEE80211_MODES
];
458 int fragmentation_threshold
;
459 int short_retry_limit
; /* dot11ShortRetryLimit */
460 int long_retry_limit
; /* dot11LongRetryLimit */
462 struct crypto_blkcipher
*wep_tx_tfm
;
463 struct crypto_blkcipher
*wep_rx_tfm
;
466 int bridge_packets
; /* bridge packets between associated stations and
467 * deliver multicast frames both back to wireless
468 * media and to the local net stack */
470 ieee80211_rx_handler
*rx_pre_handlers
;
471 ieee80211_rx_handler
*rx_handlers
;
472 ieee80211_tx_handler
*tx_handlers
;
474 struct list_head interfaces
;
477 int scan_channel_idx
;
478 enum { SCAN_SET_CHANNEL
, SCAN_SEND_PROBE
} scan_state
;
479 unsigned long last_scan_completed
;
480 struct delayed_work scan_work
;
481 struct net_device
*scan_dev
;
482 struct ieee80211_channel
*oper_channel
, *scan_channel
;
483 struct ieee80211_hw_mode
*oper_hw_mode
, *scan_hw_mode
;
484 u8 scan_ssid
[IEEE80211_MAX_SSID_LEN
];
485 size_t scan_ssid_len
;
486 struct list_head sta_bss_list
;
487 struct ieee80211_sta_bss
*sta_bss_hash
[STA_HASH_SIZE
];
488 spinlock_t sta_bss_lock
;
489 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
490 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
491 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
495 /* dot11CountersTable */
496 u32 dot11TransmittedFragmentCount
;
497 u32 dot11MulticastTransmittedFrameCount
;
498 u32 dot11FailedCount
;
500 u32 dot11MultipleRetryCount
;
501 u32 dot11FrameDuplicateCount
;
502 u32 dot11ReceivedFragmentCount
;
503 u32 dot11MulticastReceivedFrameCount
;
504 u32 dot11TransmittedFrameCount
;
505 u32 dot11WEPUndecryptableCount
;
507 #ifdef CONFIG_MAC80211_LEDS
508 int tx_led_counter
, rx_led_counter
;
509 struct led_trigger
*tx_led
, *rx_led
;
510 char tx_led_name
[32], rx_led_name
[32];
516 #ifdef CONFIG_MAC80211_DEBUGFS
517 struct work_struct sta_debugfs_add
;
520 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
521 /* TX/RX handler statistics */
522 unsigned int tx_handlers_drop
;
523 unsigned int tx_handlers_queued
;
524 unsigned int tx_handlers_drop_unencrypted
;
525 unsigned int tx_handlers_drop_fragment
;
526 unsigned int tx_handlers_drop_wep
;
527 unsigned int tx_handlers_drop_not_assoc
;
528 unsigned int tx_handlers_drop_unauth_port
;
529 unsigned int rx_handlers_drop
;
530 unsigned int rx_handlers_queued
;
531 unsigned int rx_handlers_drop_nullfunc
;
532 unsigned int rx_handlers_drop_defrag
;
533 unsigned int rx_handlers_drop_short
;
534 unsigned int rx_handlers_drop_passive_scan
;
535 unsigned int tx_expand_skb_head
;
536 unsigned int tx_expand_skb_head_cloned
;
537 unsigned int rx_expand_skb_head
;
538 unsigned int rx_expand_skb_head2
;
539 unsigned int rx_handlers_fragments
;
540 unsigned int tx_status_drop
;
541 unsigned int wme_rx_queue
[NUM_RX_DATA_QUEUES
];
542 unsigned int wme_tx_queue
[NUM_RX_DATA_QUEUES
];
543 #define I802_DEBUG_INC(c) (c)++
544 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
545 #define I802_DEBUG_INC(c) do { } while (0)
546 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
549 int total_ps_buffered
; /* total number of all buffered unicast and
550 * multicast packets for power saving stations
552 int wifi_wme_noack_test
;
553 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
555 unsigned int enabled_modes
; /* bitfield of allowed modes;
557 unsigned int hw_modes
; /* bitfield of supported hardware modes;
562 #ifdef CONFIG_MAC80211_DEBUGFS
563 struct local_debugfsdentries
{
564 struct dentry
*channel
;
565 struct dentry
*frequency
;
566 struct dentry
*antenna_sel_tx
;
567 struct dentry
*antenna_sel_rx
;
568 struct dentry
*bridge_packets
;
569 struct dentry
*rts_threshold
;
570 struct dentry
*fragmentation_threshold
;
571 struct dentry
*short_retry_limit
;
572 struct dentry
*long_retry_limit
;
573 struct dentry
*total_ps_buffered
;
575 struct dentry
*wep_iv
;
576 struct dentry
*modes
;
577 struct dentry
*statistics
;
578 struct local_debugfsdentries_statsdentries
{
579 struct dentry
*transmitted_fragment_count
;
580 struct dentry
*multicast_transmitted_frame_count
;
581 struct dentry
*failed_count
;
582 struct dentry
*retry_count
;
583 struct dentry
*multiple_retry_count
;
584 struct dentry
*frame_duplicate_count
;
585 struct dentry
*received_fragment_count
;
586 struct dentry
*multicast_received_frame_count
;
587 struct dentry
*transmitted_frame_count
;
588 struct dentry
*wep_undecryptable_count
;
589 struct dentry
*num_scans
;
590 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
591 struct dentry
*tx_handlers_drop
;
592 struct dentry
*tx_handlers_queued
;
593 struct dentry
*tx_handlers_drop_unencrypted
;
594 struct dentry
*tx_handlers_drop_fragment
;
595 struct dentry
*tx_handlers_drop_wep
;
596 struct dentry
*tx_handlers_drop_not_assoc
;
597 struct dentry
*tx_handlers_drop_unauth_port
;
598 struct dentry
*rx_handlers_drop
;
599 struct dentry
*rx_handlers_queued
;
600 struct dentry
*rx_handlers_drop_nullfunc
;
601 struct dentry
*rx_handlers_drop_defrag
;
602 struct dentry
*rx_handlers_drop_short
;
603 struct dentry
*rx_handlers_drop_passive_scan
;
604 struct dentry
*tx_expand_skb_head
;
605 struct dentry
*tx_expand_skb_head_cloned
;
606 struct dentry
*rx_expand_skb_head
;
607 struct dentry
*rx_expand_skb_head2
;
608 struct dentry
*rx_handlers_fragments
;
609 struct dentry
*tx_status_drop
;
610 struct dentry
*wme_tx_queue
;
611 struct dentry
*wme_rx_queue
;
613 struct dentry
*dot11ACKFailureCount
;
614 struct dentry
*dot11RTSFailureCount
;
615 struct dentry
*dot11FCSErrorCount
;
616 struct dentry
*dot11RTSSuccessCount
;
618 struct dentry
*stations
;
624 static inline struct ieee80211_local
*hw_to_local(
625 struct ieee80211_hw
*hw
)
627 return container_of(hw
, struct ieee80211_local
, hw
);
630 static inline struct ieee80211_hw
*local_to_hw(
631 struct ieee80211_local
*local
)
636 enum ieee80211_link_state_t
{
637 IEEE80211_LINK_STATE_XOFF
= 0,
638 IEEE80211_LINK_STATE_PENDING
,
641 struct sta_attribute
{
642 struct attribute attr
;
643 ssize_t (*show
)(const struct sta_info
*, char *buf
);
644 ssize_t (*store
)(struct sta_info
*, const char *buf
, size_t count
);
647 static inline void __bss_tim_set(struct ieee80211_if_ap
*bss
, int aid
)
650 * This format has ben mandated by the IEEE specifications,
651 * so this line may not be changed to use the __set_bit() format.
653 bss
->tim
[(aid
)/8] |= 1<<((aid
) % 8);
656 static inline void bss_tim_set(struct ieee80211_local
*local
,
657 struct ieee80211_if_ap
*bss
, int aid
)
659 read_lock_bh(&local
->sta_lock
);
660 __bss_tim_set(bss
, aid
);
661 read_unlock_bh(&local
->sta_lock
);
664 static inline void __bss_tim_clear(struct ieee80211_if_ap
*bss
, int aid
)
667 * This format has ben mandated by the IEEE specifications,
668 * so this line may not be changed to use the __clear_bit() format.
670 bss
->tim
[(aid
)/8] &= !(1<<((aid
) % 8));
673 static inline void bss_tim_clear(struct ieee80211_local
*local
,
674 struct ieee80211_if_ap
*bss
, int aid
)
676 read_lock_bh(&local
->sta_lock
);
677 __bss_tim_clear(bss
, aid
);
678 read_unlock_bh(&local
->sta_lock
);
682 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
683 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
684 * @rate: Transmission rate to check, in 100 kbps
686 * Check if a given rate is an Extended Rate PHY (ERP) rate.
688 static inline int ieee80211_is_erp_rate(int phymode
, int rate
)
690 if (phymode
== MODE_IEEE80211G
) {
691 if (rate
!= 10 && rate
!= 20 &&
692 rate
!= 55 && rate
!= 110)
698 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
700 return compare_ether_addr(raddr
, addr
) == 0 ||
701 is_broadcast_ether_addr(raddr
);
706 int ieee80211_hw_config(struct ieee80211_local
*local
);
707 int ieee80211_if_config(struct net_device
*dev
);
708 int ieee80211_if_config_beacon(struct net_device
*dev
);
709 void ieee80211_rx_mgmt(struct ieee80211_local
*local
, struct sk_buff
*skb
,
710 struct ieee80211_rx_status
*status
, u32 msg_type
);
711 void ieee80211_prepare_rates(struct ieee80211_local
*local
,
712 struct ieee80211_hw_mode
*mode
);
713 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data
*tx
);
714 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
);
715 void ieee80211_if_setup(struct net_device
*dev
);
716 void ieee80211_if_mgmt_setup(struct net_device
*dev
);
717 struct ieee80211_rate
*ieee80211_get_rate(struct ieee80211_local
*local
,
718 int phymode
, int hwrate
);
720 /* ieee80211_ioctl.c */
721 extern const struct iw_handler_def ieee80211_iw_handler_def
;
724 /* Least common multiple of the used rates (in 100 kbps). This is used to
725 * calculate rate_inv values for each rate so that only integers are needed. */
726 #define CHAN_UTIL_RATE_LCM 95040
727 /* 1 usec is 1/8 * (95040/10) = 1188 */
728 #define CHAN_UTIL_PER_USEC 1188
729 /* Amount of bits to shift the result right to scale the total utilization
730 * to values that will not wrap around 32-bit integers. */
731 #define CHAN_UTIL_SHIFT 9
732 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
733 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
734 * raw value with about 23 should give utilization in 10th of a percentage
735 * (1/1000). However, utilization is only estimated and not all intervals
736 * between frames etc. are calculated. 18 seems to give numbers that are closer
737 * to the real maximum. */
738 #define CHAN_UTIL_PER_10MS 18
739 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
740 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
743 /* ieee80211_ioctl.c */
744 int ieee80211_set_compression(struct ieee80211_local
*local
,
745 struct net_device
*dev
, struct sta_info
*sta
);
746 int ieee80211_set_channel(struct ieee80211_local
*local
, int channel
, int freq
);
747 /* ieee80211_sta.c */
748 void ieee80211_sta_timer(unsigned long data
);
749 void ieee80211_sta_work(struct work_struct
*work
);
750 void ieee80211_sta_scan_work(struct work_struct
*work
);
751 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
752 struct ieee80211_rx_status
*rx_status
);
753 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
);
754 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
);
755 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
);
756 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
);
757 void ieee80211_sta_req_auth(struct net_device
*dev
,
758 struct ieee80211_if_sta
*ifsta
);
759 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
);
760 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
761 struct ieee80211_rx_status
*rx_status
);
762 void ieee80211_rx_bss_list_init(struct net_device
*dev
);
763 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
);
764 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
);
765 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
766 struct sk_buff
*skb
, u8
*bssid
,
768 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
);
769 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
);
770 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
);
771 void ieee80211_reset_erp_info(struct net_device
*dev
);
773 /* ieee80211_iface.c */
774 int ieee80211_if_add(struct net_device
*dev
, const char *name
,
775 struct net_device
**new_dev
, int type
);
776 void ieee80211_if_set_type(struct net_device
*dev
, int type
);
777 void ieee80211_if_reinit(struct net_device
*dev
);
778 void __ieee80211_if_del(struct ieee80211_local
*local
,
779 struct ieee80211_sub_if_data
*sdata
);
780 int ieee80211_if_remove(struct net_device
*dev
, const char *name
, int id
);
781 void ieee80211_if_free(struct net_device
*dev
);
782 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data
*sdata
);
783 int ieee80211_if_add_mgmt(struct ieee80211_local
*local
);
784 void ieee80211_if_del_mgmt(struct ieee80211_local
*local
);
787 void ieee80211_regdomain_init(void);
788 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode
*mode
);
791 extern ieee80211_rx_handler ieee80211_rx_pre_handlers
[];
792 extern ieee80211_rx_handler ieee80211_rx_handlers
[];
795 extern ieee80211_tx_handler ieee80211_tx_handlers
[];
796 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
797 void ieee80211_tx_pending(unsigned long data
);
798 int ieee80211_master_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
799 int ieee80211_monitor_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
800 int ieee80211_subif_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
801 int ieee80211_mgmt_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
803 /* utility functions/constants */
804 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
805 extern const unsigned char rfc1042_header
[6];
806 extern const unsigned char bridge_tunnel_header
[6];
807 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
);
808 int ieee80211_is_eapol(const struct sk_buff
*skb
);
809 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
810 int rate
, int erp
, int short_preamble
);
811 void mac80211_ev_michael_mic_failure(struct net_device
*dev
, int keyidx
,
812 struct ieee80211_hdr
*hdr
);
814 #endif /* IEEE80211_I_H */