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 IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
42 /* Maximum number of broadcast/multicast frames to buffer when some of the
43 * associated stations are using power saving. */
44 #define AP_MAX_BC_BUFFER 128
46 /* Maximum number of frames buffered to all STAs, including multicast frames.
47 * Note: increasing this limit increases the potential memory requirement. Each
48 * frame can be up to about 2 kB long. */
49 #define TOTAL_MAX_TX_BUFFER 512
51 /* Required encryption head and tailroom */
52 #define IEEE80211_ENCRYPT_HEADROOM 8
53 #define IEEE80211_ENCRYPT_TAILROOM 12
55 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
56 * reception of at least three fragmented frames. This limit can be increased
57 * by changing this define, at the cost of slower frame reassembly and
58 * increased memory use (about 2 kB of RAM per entry). */
59 #define IEEE80211_FRAGMENT_MAX 4
61 struct ieee80211_fragment_entry
{
62 unsigned long first_frag_time
;
64 unsigned int rx_queue
;
65 unsigned int last_frag
;
66 unsigned int extra_len
;
67 struct sk_buff_head skb_list
;
68 int ccmp
; /* Whether fragments were encrypted with CCMP */
69 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
73 struct ieee80211_sta_bss
{
74 struct list_head list
;
75 struct ieee80211_sta_bss
*hnext
;
79 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
81 u16 capability
; /* host byte order */
85 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 #define IEEE80211_TXRXD_TX_INJECTED BIT(6)
126 #define IEEE80211_TXRXD_RX_AMSDU BIT(7)
127 struct ieee80211_txrx_data
{
129 struct net_device
*dev
;
130 struct ieee80211_local
*local
;
131 struct ieee80211_sub_if_data
*sdata
;
132 struct sta_info
*sta
;
134 struct ieee80211_key
*key
;
138 struct ieee80211_tx_control
*control
;
139 struct ieee80211_hw_mode
*mode
;
140 struct ieee80211_rate
*rate
;
141 /* use this rate (if set) for last fragment; rate can
142 * be set to lower rate for the first fragments, e.g.,
143 * when using CTS protection with IEEE 802.11g. */
144 struct ieee80211_rate
*last_frag_rate
;
145 int last_frag_hwrate
;
147 /* Extra fragments (in addition to the first fragment
150 struct sk_buff
**extra_frag
;
153 struct ieee80211_rx_status
*status
;
154 int sent_ps_buffered
;
163 /* flags used in struct ieee80211_tx_packet_data.flags */
164 #define IEEE80211_TXPD_REQ_TX_STATUS BIT(0)
165 #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1)
166 #define IEEE80211_TXPD_REQUEUE BIT(2)
167 #define IEEE80211_TXPD_EAPOL_FRAME BIT(3)
168 #define IEEE80211_TXPD_AMPDU BIT(4)
169 /* Stored in sk_buff->cb */
170 struct ieee80211_tx_packet_data
{
172 unsigned long jiffies
;
177 struct ieee80211_tx_stored_packet
{
178 struct ieee80211_tx_control control
;
181 struct sk_buff
**extra_frag
;
182 int last_frag_rateidx
;
183 int last_frag_hwrate
;
184 struct ieee80211_rate
*last_frag_rate
;
185 unsigned int last_frag_rate_ctrl_probe
;
188 typedef ieee80211_txrx_result (*ieee80211_tx_handler
)
189 (struct ieee80211_txrx_data
*tx
);
191 typedef ieee80211_txrx_result (*ieee80211_rx_handler
)
192 (struct ieee80211_txrx_data
*rx
);
196 int head_len
, tail_len
;
200 struct ieee80211_if_ap
{
201 struct beacon_data
*beacon
;
203 struct list_head vlans
;
205 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
208 /* yes, this looks ugly, but guarantees that we can later use
210 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
211 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
212 atomic_t num_sta_ps
; /* number of stations in PS mode */
213 struct sk_buff_head ps_bc_buf
;
215 int force_unicast_rateidx
; /* forced TX rateidx for unicast frames */
216 int max_ratectrl_rateidx
; /* max TX rateidx for rate control */
217 int num_beacons
; /* number of TXed beacon frames for this BSS */
220 struct ieee80211_if_wds
{
221 u8 remote_addr
[ETH_ALEN
];
222 struct sta_info
*sta
;
225 struct ieee80211_if_vlan
{
226 struct ieee80211_sub_if_data
*ap
;
227 struct list_head list
;
230 /* flags used in struct ieee80211_if_sta.flags */
231 #define IEEE80211_STA_SSID_SET BIT(0)
232 #define IEEE80211_STA_BSSID_SET BIT(1)
233 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
234 #define IEEE80211_STA_AUTHENTICATED BIT(3)
235 #define IEEE80211_STA_ASSOCIATED BIT(4)
236 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
237 #define IEEE80211_STA_CREATE_IBSS BIT(6)
238 #define IEEE80211_STA_MIXED_CELL BIT(7)
239 #define IEEE80211_STA_WMM_ENABLED BIT(8)
240 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
241 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
242 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
243 #define IEEE80211_STA_PRIVACY_INVOKED BIT(13)
244 struct ieee80211_if_sta
{
246 IEEE80211_DISABLED
, IEEE80211_AUTHENTICATE
,
247 IEEE80211_ASSOCIATE
, IEEE80211_ASSOCIATED
,
248 IEEE80211_IBSS_SEARCH
, IEEE80211_IBSS_JOINED
250 struct timer_list timer
;
251 struct work_struct work
;
252 u8 bssid
[ETH_ALEN
], prev_bssid
[ETH_ALEN
];
253 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
255 u8 scan_ssid
[IEEE80211_MAX_SSID_LEN
];
256 size_t scan_ssid_len
;
259 u8
*extra_ie
; /* to be added to the end of AssocReq */
262 /* The last AssocReq/Resp IEs */
263 u8
*assocreq_ies
, *assocresp_ies
;
264 size_t assocreq_ies_len
, assocresp_ies_len
;
266 int auth_tries
, assoc_tries
;
269 #define IEEE80211_STA_REQ_SCAN 0
270 #define IEEE80211_STA_REQ_AUTH 1
271 #define IEEE80211_STA_REQ_RUN 2
272 unsigned long request
;
273 struct sk_buff_head skb_queue
;
275 unsigned long last_probe
;
277 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
278 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
279 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
280 unsigned int auth_algs
; /* bitfield of allowed auth algs */
281 int auth_alg
; /* currently used IEEE 802.11 authentication algorithm */
282 int auth_transaction
;
284 unsigned long ibss_join_req
;
285 struct sk_buff
*probe_resp
; /* ProbeResp template for IBSS */
288 int wmm_last_param_set
;
292 /* flags used in struct ieee80211_sub_if_data.flags */
293 #define IEEE80211_SDATA_ALLMULTI BIT(0)
294 #define IEEE80211_SDATA_PROMISC BIT(1)
295 #define IEEE80211_SDATA_USERSPACE_MLME BIT(2)
296 struct ieee80211_sub_if_data
{
297 struct list_head list
;
299 struct wireless_dev wdev
;
302 struct list_head key_list
;
304 struct net_device
*dev
;
305 struct ieee80211_local
*local
;
309 int drop_unencrypted
;
311 * IEEE 802.1X Port access control in effect,
312 * drop packets to/from unauthorized port
318 /* Fragment table for host-based reassembly */
319 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
320 unsigned int fragment_next
;
322 #define NUM_DEFAULT_KEYS 4
323 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
];
324 struct ieee80211_key
*default_key
;
327 * BSS configuration for this interface.
329 * FIXME: I feel bad putting this here when we already have a
330 * bss pointer, but the bss pointer is just wrong when
331 * you have multiple virtual STA mode interfaces...
332 * This needs to be fixed.
334 struct ieee80211_bss_conf bss_conf
;
335 struct ieee80211_if_ap
*bss
; /* BSS that this device belongs to */
338 struct ieee80211_if_ap ap
;
339 struct ieee80211_if_wds wds
;
340 struct ieee80211_if_vlan vlan
;
341 struct ieee80211_if_sta sta
;
346 #ifdef CONFIG_MAC80211_DEBUGFS
347 struct dentry
*debugfsdir
;
350 struct dentry
*channel_use
;
351 struct dentry
*drop_unencrypted
;
352 struct dentry
*ieee802_1x_pac
;
353 struct dentry
*state
;
354 struct dentry
*bssid
;
355 struct dentry
*prev_bssid
;
356 struct dentry
*ssid_len
;
358 struct dentry
*ap_capab
;
359 struct dentry
*capab
;
360 struct dentry
*extra_ie_len
;
361 struct dentry
*auth_tries
;
362 struct dentry
*assoc_tries
;
363 struct dentry
*auth_algs
;
364 struct dentry
*auth_alg
;
365 struct dentry
*auth_transaction
;
366 struct dentry
*flags
;
369 struct dentry
*channel_use
;
370 struct dentry
*drop_unencrypted
;
371 struct dentry
*ieee802_1x_pac
;
372 struct dentry
*num_sta_ps
;
373 struct dentry
*dtim_count
;
374 struct dentry
*num_beacons
;
375 struct dentry
*force_unicast_rateidx
;
376 struct dentry
*max_ratectrl_rateidx
;
377 struct dentry
*num_buffered_multicast
;
380 struct dentry
*channel_use
;
381 struct dentry
*drop_unencrypted
;
382 struct dentry
*ieee802_1x_pac
;
386 struct dentry
*channel_use
;
387 struct dentry
*drop_unencrypted
;
388 struct dentry
*ieee802_1x_pac
;
393 struct dentry
*default_key
;
396 /* must be last, dynamically sized area in this! */
397 struct ieee80211_vif vif
;
401 struct ieee80211_sub_if_data
*vif_to_sdata(struct ieee80211_vif
*p
)
403 return container_of(p
, struct ieee80211_sub_if_data
, vif
);
406 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
409 IEEE80211_RX_MSG
= 1,
410 IEEE80211_TX_STATUS_MSG
= 2,
411 IEEE80211_DELBA_MSG
= 3,
412 IEEE80211_ADDBA_MSG
= 4,
415 struct ieee80211_local
{
416 /* embed the driver visible part.
417 * don't cast (use the static inlines below), but we keep
418 * it first anyway so they become a no-op */
419 struct ieee80211_hw hw
;
421 const struct ieee80211_ops
*ops
;
423 /* List of registered struct ieee80211_hw_mode */
424 struct list_head modes_list
;
426 struct net_device
*mdev
; /* wmaster# - "master" 802.11 device */
429 unsigned int filter_flags
; /* FIF_* */
430 struct iw_statistics wstats
;
432 int tx_headroom
; /* required headroom for hardware/radiotap */
435 IEEE80211_DEV_UNINITIALIZED
= 0,
436 IEEE80211_DEV_REGISTERED
,
437 IEEE80211_DEV_UNREGISTERED
,
440 /* Tasklet and skb queue to process calls from IRQ mode. All frames
441 * added to skb_queue will be processed, but frames in
442 * skb_queue_unreliable may be dropped if the total length of these
443 * queues increases over the limit. */
444 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
445 struct tasklet_struct tasklet
;
446 struct sk_buff_head skb_queue
;
447 struct sk_buff_head skb_queue_unreliable
;
449 /* Station data structures */
450 rwlock_t sta_lock
; /* protects STA data structures */
451 int num_sta
; /* number of stations in sta_list */
452 struct list_head sta_list
;
453 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
454 struct timer_list sta_cleanup
;
456 unsigned long state
[NUM_TX_DATA_QUEUES_AMPDU
];
457 struct ieee80211_tx_stored_packet pending_packet
[NUM_TX_DATA_QUEUES_AMPDU
];
458 struct tasklet_struct tx_pending_tasklet
;
460 /* number of interfaces with corresponding IFF_ flags */
461 atomic_t iff_allmultis
, iff_promiscs
;
463 struct rate_control_ref
*rate_ctrl
;
465 /* Supported and basic rate filters for different modes. These are
466 * pointers to -1 terminated lists and rates in 100 kbps units. */
467 int *supp_rates
[NUM_IEEE80211_MODES
];
468 int *basic_rates
[NUM_IEEE80211_MODES
];
471 int fragmentation_threshold
;
472 int short_retry_limit
; /* dot11ShortRetryLimit */
473 int long_retry_limit
; /* dot11LongRetryLimit */
475 struct crypto_blkcipher
*wep_tx_tfm
;
476 struct crypto_blkcipher
*wep_rx_tfm
;
479 int bridge_packets
; /* bridge packets between associated stations and
480 * deliver multicast frames both back to wireless
481 * media and to the local net stack */
483 ieee80211_rx_handler
*rx_pre_handlers
;
484 ieee80211_rx_handler
*rx_handlers
;
485 ieee80211_tx_handler
*tx_handlers
;
487 struct list_head interfaces
;
489 bool sta_sw_scanning
;
490 bool sta_hw_scanning
;
491 int scan_channel_idx
;
492 enum { SCAN_SET_CHANNEL
, SCAN_SEND_PROBE
} scan_state
;
493 unsigned long last_scan_completed
;
494 struct delayed_work scan_work
;
495 struct net_device
*scan_dev
;
496 struct ieee80211_channel
*oper_channel
, *scan_channel
;
497 struct ieee80211_hw_mode
*oper_hw_mode
, *scan_hw_mode
;
498 u8 scan_ssid
[IEEE80211_MAX_SSID_LEN
];
499 size_t scan_ssid_len
;
500 struct list_head sta_bss_list
;
501 struct ieee80211_sta_bss
*sta_bss_hash
[STA_HASH_SIZE
];
502 spinlock_t sta_bss_lock
;
505 /* dot11CountersTable */
506 u32 dot11TransmittedFragmentCount
;
507 u32 dot11MulticastTransmittedFrameCount
;
508 u32 dot11FailedCount
;
510 u32 dot11MultipleRetryCount
;
511 u32 dot11FrameDuplicateCount
;
512 u32 dot11ReceivedFragmentCount
;
513 u32 dot11MulticastReceivedFrameCount
;
514 u32 dot11TransmittedFrameCount
;
515 u32 dot11WEPUndecryptableCount
;
517 #ifdef CONFIG_MAC80211_LEDS
518 int tx_led_counter
, rx_led_counter
;
519 struct led_trigger
*tx_led
, *rx_led
, *assoc_led
, *radio_led
;
520 char tx_led_name
[32], rx_led_name
[32],
521 assoc_led_name
[32], radio_led_name
[32];
527 #ifdef CONFIG_MAC80211_DEBUGFS
528 struct work_struct sta_debugfs_add
;
531 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
532 /* TX/RX handler statistics */
533 unsigned int tx_handlers_drop
;
534 unsigned int tx_handlers_queued
;
535 unsigned int tx_handlers_drop_unencrypted
;
536 unsigned int tx_handlers_drop_fragment
;
537 unsigned int tx_handlers_drop_wep
;
538 unsigned int tx_handlers_drop_not_assoc
;
539 unsigned int tx_handlers_drop_unauth_port
;
540 unsigned int rx_handlers_drop
;
541 unsigned int rx_handlers_queued
;
542 unsigned int rx_handlers_drop_nullfunc
;
543 unsigned int rx_handlers_drop_defrag
;
544 unsigned int rx_handlers_drop_short
;
545 unsigned int rx_handlers_drop_passive_scan
;
546 unsigned int tx_expand_skb_head
;
547 unsigned int tx_expand_skb_head_cloned
;
548 unsigned int rx_expand_skb_head
;
549 unsigned int rx_expand_skb_head2
;
550 unsigned int rx_handlers_fragments
;
551 unsigned int tx_status_drop
;
552 unsigned int wme_rx_queue
[NUM_RX_DATA_QUEUES
];
553 unsigned int wme_tx_queue
[NUM_RX_DATA_QUEUES
];
554 #define I802_DEBUG_INC(c) (c)++
555 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
556 #define I802_DEBUG_INC(c) do { } while (0)
557 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
560 int total_ps_buffered
; /* total number of all buffered unicast and
561 * multicast packets for power saving stations
563 int wifi_wme_noack_test
;
564 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
566 unsigned int enabled_modes
; /* bitfield of allowed modes;
568 unsigned int hw_modes
; /* bitfield of supported hardware modes;
571 #ifdef CONFIG_MAC80211_DEBUGFS
572 struct local_debugfsdentries
{
573 struct dentry
*channel
;
574 struct dentry
*frequency
;
575 struct dentry
*antenna_sel_tx
;
576 struct dentry
*antenna_sel_rx
;
577 struct dentry
*bridge_packets
;
578 struct dentry
*rts_threshold
;
579 struct dentry
*fragmentation_threshold
;
580 struct dentry
*short_retry_limit
;
581 struct dentry
*long_retry_limit
;
582 struct dentry
*total_ps_buffered
;
584 struct dentry
*wep_iv
;
585 struct dentry
*modes
;
586 struct dentry
*statistics
;
587 struct local_debugfsdentries_statsdentries
{
588 struct dentry
*transmitted_fragment_count
;
589 struct dentry
*multicast_transmitted_frame_count
;
590 struct dentry
*failed_count
;
591 struct dentry
*retry_count
;
592 struct dentry
*multiple_retry_count
;
593 struct dentry
*frame_duplicate_count
;
594 struct dentry
*received_fragment_count
;
595 struct dentry
*multicast_received_frame_count
;
596 struct dentry
*transmitted_frame_count
;
597 struct dentry
*wep_undecryptable_count
;
598 struct dentry
*num_scans
;
599 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
600 struct dentry
*tx_handlers_drop
;
601 struct dentry
*tx_handlers_queued
;
602 struct dentry
*tx_handlers_drop_unencrypted
;
603 struct dentry
*tx_handlers_drop_fragment
;
604 struct dentry
*tx_handlers_drop_wep
;
605 struct dentry
*tx_handlers_drop_not_assoc
;
606 struct dentry
*tx_handlers_drop_unauth_port
;
607 struct dentry
*rx_handlers_drop
;
608 struct dentry
*rx_handlers_queued
;
609 struct dentry
*rx_handlers_drop_nullfunc
;
610 struct dentry
*rx_handlers_drop_defrag
;
611 struct dentry
*rx_handlers_drop_short
;
612 struct dentry
*rx_handlers_drop_passive_scan
;
613 struct dentry
*tx_expand_skb_head
;
614 struct dentry
*tx_expand_skb_head_cloned
;
615 struct dentry
*rx_expand_skb_head
;
616 struct dentry
*rx_expand_skb_head2
;
617 struct dentry
*rx_handlers_fragments
;
618 struct dentry
*tx_status_drop
;
619 struct dentry
*wme_tx_queue
;
620 struct dentry
*wme_rx_queue
;
622 struct dentry
*dot11ACKFailureCount
;
623 struct dentry
*dot11RTSFailureCount
;
624 struct dentry
*dot11FCSErrorCount
;
625 struct dentry
*dot11RTSSuccessCount
;
627 struct dentry
*stations
;
633 /* this struct represents 802.11n's RA/TID combination */
634 struct ieee80211_ra_tid
{
639 static inline struct ieee80211_local
*hw_to_local(
640 struct ieee80211_hw
*hw
)
642 return container_of(hw
, struct ieee80211_local
, hw
);
645 static inline struct ieee80211_hw
*local_to_hw(
646 struct ieee80211_local
*local
)
651 enum ieee80211_link_state_t
{
652 IEEE80211_LINK_STATE_XOFF
= 0,
653 IEEE80211_LINK_STATE_PENDING
,
656 struct sta_attribute
{
657 struct attribute attr
;
658 ssize_t (*show
)(const struct sta_info
*, char *buf
);
659 ssize_t (*store
)(struct sta_info
*, const char *buf
, size_t count
);
662 static inline void __bss_tim_set(struct ieee80211_if_ap
*bss
, u16 aid
)
665 * This format has been mandated by the IEEE specifications,
666 * so this line may not be changed to use the __set_bit() format.
668 bss
->tim
[aid
/ 8] |= (1 << (aid
% 8));
671 static inline void bss_tim_set(struct ieee80211_local
*local
,
672 struct ieee80211_if_ap
*bss
, u16 aid
)
674 read_lock_bh(&local
->sta_lock
);
675 __bss_tim_set(bss
, aid
);
676 read_unlock_bh(&local
->sta_lock
);
679 static inline void __bss_tim_clear(struct ieee80211_if_ap
*bss
, u16 aid
)
682 * This format has been mandated by the IEEE specifications,
683 * so this line may not be changed to use the __clear_bit() format.
685 bss
->tim
[aid
/ 8] &= ~(1 << (aid
% 8));
688 static inline void bss_tim_clear(struct ieee80211_local
*local
,
689 struct ieee80211_if_ap
*bss
, u16 aid
)
691 read_lock_bh(&local
->sta_lock
);
692 __bss_tim_clear(bss
, aid
);
693 read_unlock_bh(&local
->sta_lock
);
697 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
698 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
699 * @rate: Transmission rate to check, in 100 kbps
701 * Check if a given rate is an Extended Rate PHY (ERP) rate.
703 static inline int ieee80211_is_erp_rate(int phymode
, int rate
)
705 if (phymode
== MODE_IEEE80211G
) {
706 if (rate
!= 10 && rate
!= 20 &&
707 rate
!= 55 && rate
!= 110)
713 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
715 return compare_ether_addr(raddr
, addr
) == 0 ||
716 is_broadcast_ether_addr(raddr
);
721 int ieee80211_hw_config(struct ieee80211_local
*local
);
722 int ieee80211_if_config(struct net_device
*dev
);
723 int ieee80211_if_config_beacon(struct net_device
*dev
);
724 void ieee80211_prepare_rates(struct ieee80211_local
*local
,
725 struct ieee80211_hw_mode
*mode
);
726 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data
*tx
);
727 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
);
728 void ieee80211_if_setup(struct net_device
*dev
);
729 struct ieee80211_rate
*ieee80211_get_rate(struct ieee80211_local
*local
,
730 int phymode
, int hwrate
);
731 int ieee80211_hw_config_ht(struct ieee80211_local
*local
, int enable_ht
,
732 struct ieee80211_ht_info
*req_ht_cap
,
733 struct ieee80211_ht_bss_info
*req_bss_cap
);
735 /* ieee80211_ioctl.c */
736 extern const struct iw_handler_def ieee80211_iw_handler_def
;
739 /* Least common multiple of the used rates (in 100 kbps). This is used to
740 * calculate rate_inv values for each rate so that only integers are needed. */
741 #define CHAN_UTIL_RATE_LCM 95040
742 /* 1 usec is 1/8 * (95040/10) = 1188 */
743 #define CHAN_UTIL_PER_USEC 1188
744 /* Amount of bits to shift the result right to scale the total utilization
745 * to values that will not wrap around 32-bit integers. */
746 #define CHAN_UTIL_SHIFT 9
747 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
748 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
749 * raw value with about 23 should give utilization in 10th of a percentage
750 * (1/1000). However, utilization is only estimated and not all intervals
751 * between frames etc. are calculated. 18 seems to give numbers that are closer
752 * to the real maximum. */
753 #define CHAN_UTIL_PER_10MS 18
754 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
755 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
758 /* ieee80211_ioctl.c */
759 int ieee80211_set_compression(struct ieee80211_local
*local
,
760 struct net_device
*dev
, struct sta_info
*sta
);
761 int ieee80211_set_channel(struct ieee80211_local
*local
, int channel
, int freq
);
762 /* ieee80211_sta.c */
763 void ieee80211_sta_timer(unsigned long data
);
764 void ieee80211_sta_work(struct work_struct
*work
);
765 void ieee80211_sta_scan_work(struct work_struct
*work
);
766 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
767 struct ieee80211_rx_status
*rx_status
);
768 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
);
769 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
);
770 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
);
771 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
);
772 void ieee80211_sta_req_auth(struct net_device
*dev
,
773 struct ieee80211_if_sta
*ifsta
);
774 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
);
775 ieee80211_txrx_result
ieee80211_sta_rx_scan(struct net_device
*dev
,
777 struct ieee80211_rx_status
*rx_status
);
778 void ieee80211_rx_bss_list_init(struct net_device
*dev
);
779 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
);
780 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
);
781 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
782 struct sk_buff
*skb
, u8
*bssid
,
784 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
);
785 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
);
786 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data
*sdata
,
788 void ieee80211_reset_erp_info(struct net_device
*dev
);
789 int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap
*ht_cap_ie
,
790 struct ieee80211_ht_info
*ht_info
);
791 int ieee80211_ht_addt_info_ie_to_ht_bss_info(
792 struct ieee80211_ht_addt_info
*ht_add_info_ie
,
793 struct ieee80211_ht_bss_info
*bss_info
);
794 void ieee80211_send_addba_request(struct net_device
*dev
, const u8
*da
,
795 u16 tid
, u8 dialog_token
, u16 start_seq_num
,
796 u16 agg_size
, u16 timeout
);
797 void ieee80211_send_delba(struct net_device
*dev
, const u8
*da
, u16 tid
,
798 u16 initiator
, u16 reason_code
);
799 void ieee80211_sta_stop_rx_ba_session(struct net_device
*dev
, u8
*da
,
800 u16 tid
, u16 initiator
, u16 reason
);
801 void sta_rx_agg_session_timer_expired(unsigned long data
);
802 void sta_addba_resp_timer_expired(unsigned long data
);
803 /* ieee80211_iface.c */
804 int ieee80211_if_add(struct net_device
*dev
, const char *name
,
805 struct net_device
**new_dev
, int type
);
806 void ieee80211_if_set_type(struct net_device
*dev
, int type
);
807 void ieee80211_if_reinit(struct net_device
*dev
);
808 void __ieee80211_if_del(struct ieee80211_local
*local
,
809 struct ieee80211_sub_if_data
*sdata
);
810 int ieee80211_if_remove(struct net_device
*dev
, const char *name
, int id
);
811 void ieee80211_if_free(struct net_device
*dev
);
812 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data
*sdata
);
815 void ieee80211_regdomain_init(void);
816 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode
*mode
);
819 extern ieee80211_rx_handler ieee80211_rx_pre_handlers
[];
820 extern ieee80211_rx_handler ieee80211_rx_handlers
[];
823 extern ieee80211_tx_handler ieee80211_tx_handlers
[];
824 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
825 void ieee80211_tx_pending(unsigned long data
);
826 int ieee80211_master_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
827 int ieee80211_monitor_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
828 int ieee80211_subif_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
830 /* utility functions/constants */
831 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
832 extern const unsigned char rfc1042_header
[6];
833 extern const unsigned char bridge_tunnel_header
[6];
834 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
,
835 enum ieee80211_if_types type
);
836 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
837 int rate
, int erp
, int short_preamble
);
838 void mac80211_ev_michael_mic_failure(struct net_device
*dev
, int keyidx
,
839 struct ieee80211_hdr
*hdr
);
841 #endif /* IEEE80211_I_H */