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 #define IEEE80211_TXRXD_TX_INJECTED BIT(6)
126 struct ieee80211_txrx_data
{
128 struct net_device
*dev
;
129 struct ieee80211_local
*local
;
130 struct ieee80211_sub_if_data
*sdata
;
131 struct sta_info
*sta
;
133 struct ieee80211_key
*key
;
137 struct ieee80211_tx_control
*control
;
138 struct ieee80211_hw_mode
*mode
;
139 struct ieee80211_rate
*rate
;
140 /* use this rate (if set) for last fragment; rate can
141 * be set to lower rate for the first fragments, e.g.,
142 * when using CTS protection with IEEE 802.11g. */
143 struct ieee80211_rate
*last_frag_rate
;
144 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 /* Stored in sk_buff->cb */
167 struct ieee80211_tx_packet_data
{
169 unsigned long jiffies
;
174 struct ieee80211_tx_stored_packet
{
175 struct ieee80211_tx_control control
;
178 struct sk_buff
**extra_frag
;
179 int last_frag_rateidx
;
180 int last_frag_hwrate
;
181 struct ieee80211_rate
*last_frag_rate
;
182 unsigned int last_frag_rate_ctrl_probe
;
185 typedef ieee80211_txrx_result (*ieee80211_tx_handler
)
186 (struct ieee80211_txrx_data
*tx
);
188 typedef ieee80211_txrx_result (*ieee80211_rx_handler
)
189 (struct ieee80211_txrx_data
*rx
);
191 struct ieee80211_if_ap
{
192 u8
*beacon_head
, *beacon_tail
;
193 int beacon_head_len
, beacon_tail_len
;
195 struct list_head vlans
;
197 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
200 /* yes, this looks ugly, but guarantees that we can later use
202 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
203 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
204 atomic_t num_sta_ps
; /* number of stations in PS mode */
205 struct sk_buff_head ps_bc_buf
;
206 int dtim_period
, dtim_count
;
207 int force_unicast_rateidx
; /* forced TX rateidx for unicast frames */
208 int max_ratectrl_rateidx
; /* max TX rateidx for rate control */
209 int num_beacons
; /* number of TXed beacon frames for this BSS */
212 struct ieee80211_if_wds
{
213 u8 remote_addr
[ETH_ALEN
];
214 struct sta_info
*sta
;
217 struct ieee80211_if_vlan
{
218 struct ieee80211_sub_if_data
*ap
;
219 struct list_head list
;
222 /* flags used in struct ieee80211_if_sta.flags */
223 #define IEEE80211_STA_SSID_SET BIT(0)
224 #define IEEE80211_STA_BSSID_SET BIT(1)
225 #define IEEE80211_STA_PREV_BSSID_SET BIT(2)
226 #define IEEE80211_STA_AUTHENTICATED BIT(3)
227 #define IEEE80211_STA_ASSOCIATED BIT(4)
228 #define IEEE80211_STA_PROBEREQ_POLL BIT(5)
229 #define IEEE80211_STA_CREATE_IBSS BIT(6)
230 #define IEEE80211_STA_MIXED_CELL BIT(7)
231 #define IEEE80211_STA_WMM_ENABLED BIT(8)
232 #define IEEE80211_STA_AUTO_SSID_SEL BIT(10)
233 #define IEEE80211_STA_AUTO_BSSID_SEL BIT(11)
234 #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12)
235 struct ieee80211_if_sta
{
237 IEEE80211_DISABLED
, IEEE80211_AUTHENTICATE
,
238 IEEE80211_ASSOCIATE
, IEEE80211_ASSOCIATED
,
239 IEEE80211_IBSS_SEARCH
, IEEE80211_IBSS_JOINED
241 struct timer_list timer
;
242 struct work_struct work
;
243 u8 bssid
[ETH_ALEN
], prev_bssid
[ETH_ALEN
];
244 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
248 u8
*extra_ie
; /* to be added to the end of AssocReq */
251 /* The last AssocReq/Resp IEs */
252 u8
*assocreq_ies
, *assocresp_ies
;
253 size_t assocreq_ies_len
, assocresp_ies_len
;
255 int auth_tries
, assoc_tries
;
258 #define IEEE80211_STA_REQ_SCAN 0
259 #define IEEE80211_STA_REQ_AUTH 1
260 #define IEEE80211_STA_REQ_RUN 2
261 unsigned long request
;
262 struct sk_buff_head skb_queue
;
264 int key_management_enabled
;
265 unsigned long last_probe
;
267 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
268 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
269 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
270 unsigned int auth_algs
; /* bitfield of allowed auth algs */
271 int auth_alg
; /* currently used IEEE 802.11 authentication algorithm */
272 int auth_transaction
;
274 unsigned long ibss_join_req
;
275 struct sk_buff
*probe_resp
; /* ProbeResp template for IBSS */
278 int wmm_last_param_set
;
282 /* flags used in struct ieee80211_sub_if_data.flags */
283 #define IEEE80211_SDATA_ALLMULTI BIT(0)
284 #define IEEE80211_SDATA_PROMISC BIT(1)
285 #define IEEE80211_SDATA_USE_PROTECTION BIT(2) /* CTS protect ERP frames */
286 /* use short preamble with IEEE 802.11b: this flag is set when the AP or beacon
287 * generator reports that there are no present stations that cannot support short
289 #define IEEE80211_SDATA_SHORT_PREAMBLE BIT(3)
290 struct ieee80211_sub_if_data
{
291 struct list_head list
;
292 enum ieee80211_if_types type
;
294 struct wireless_dev wdev
;
297 struct list_head key_list
;
299 struct net_device
*dev
;
300 struct ieee80211_local
*local
;
304 int drop_unencrypted
;
305 int eapol
; /* 0 = process EAPOL frames as normal data frames,
306 * 1 = send EAPOL frames through wlan#ap to hostapd
308 int ieee802_1x
; /* IEEE 802.1X PAE - drop packet to/from unauthorized
313 /* Fragment table for host-based reassembly */
314 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
315 unsigned int fragment_next
;
317 #define NUM_DEFAULT_KEYS 4
318 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
];
319 struct ieee80211_key
*default_key
;
321 struct ieee80211_if_ap
*bss
; /* BSS that this device belongs to */
324 struct ieee80211_if_ap ap
;
325 struct ieee80211_if_wds wds
;
326 struct ieee80211_if_vlan vlan
;
327 struct ieee80211_if_sta sta
;
332 #ifdef CONFIG_MAC80211_DEBUGFS
333 struct dentry
*debugfsdir
;
336 struct dentry
*channel_use
;
337 struct dentry
*drop_unencrypted
;
338 struct dentry
*eapol
;
339 struct dentry
*ieee8021_x
;
340 struct dentry
*state
;
341 struct dentry
*bssid
;
342 struct dentry
*prev_bssid
;
343 struct dentry
*ssid_len
;
345 struct dentry
*ap_capab
;
346 struct dentry
*capab
;
347 struct dentry
*extra_ie_len
;
348 struct dentry
*auth_tries
;
349 struct dentry
*assoc_tries
;
350 struct dentry
*auth_algs
;
351 struct dentry
*auth_alg
;
352 struct dentry
*auth_transaction
;
353 struct dentry
*flags
;
356 struct dentry
*channel_use
;
357 struct dentry
*drop_unencrypted
;
358 struct dentry
*eapol
;
359 struct dentry
*ieee8021_x
;
360 struct dentry
*num_sta_ps
;
361 struct dentry
*dtim_period
;
362 struct dentry
*dtim_count
;
363 struct dentry
*num_beacons
;
364 struct dentry
*force_unicast_rateidx
;
365 struct dentry
*max_ratectrl_rateidx
;
366 struct dentry
*num_buffered_multicast
;
367 struct dentry
*beacon_head_len
;
368 struct dentry
*beacon_tail_len
;
371 struct dentry
*channel_use
;
372 struct dentry
*drop_unencrypted
;
373 struct dentry
*eapol
;
374 struct dentry
*ieee8021_x
;
378 struct dentry
*channel_use
;
379 struct dentry
*drop_unencrypted
;
380 struct dentry
*eapol
;
381 struct dentry
*ieee8021_x
;
386 struct dentry
*default_key
;
391 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
394 IEEE80211_RX_MSG
= 1,
395 IEEE80211_TX_STATUS_MSG
= 2,
398 struct ieee80211_local
{
399 /* embed the driver visible part.
400 * don't cast (use the static inlines below), but we keep
401 * it first anyway so they become a no-op */
402 struct ieee80211_hw hw
;
404 const struct ieee80211_ops
*ops
;
406 /* List of registered struct ieee80211_hw_mode */
407 struct list_head modes_list
;
409 struct net_device
*mdev
; /* wmaster# - "master" 802.11 device */
412 unsigned int filter_flags
; /* FIF_* */
413 struct iw_statistics wstats
;
415 int tx_headroom
; /* required headroom for hardware/radiotap */
418 IEEE80211_DEV_UNINITIALIZED
= 0,
419 IEEE80211_DEV_REGISTERED
,
420 IEEE80211_DEV_UNREGISTERED
,
423 /* Tasklet and skb queue to process calls from IRQ mode. All frames
424 * added to skb_queue will be processed, but frames in
425 * skb_queue_unreliable may be dropped if the total length of these
426 * queues increases over the limit. */
427 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
428 struct tasklet_struct tasklet
;
429 struct sk_buff_head skb_queue
;
430 struct sk_buff_head skb_queue_unreliable
;
432 /* Station data structures */
433 rwlock_t sta_lock
; /* protects STA data structures */
434 int num_sta
; /* number of stations in sta_list */
435 struct list_head sta_list
;
436 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
437 struct timer_list sta_cleanup
;
439 unsigned long state
[NUM_TX_DATA_QUEUES
];
440 struct ieee80211_tx_stored_packet pending_packet
[NUM_TX_DATA_QUEUES
];
441 struct tasklet_struct tx_pending_tasklet
;
443 /* number of interfaces with corresponding IFF_ flags */
444 atomic_t iff_allmultis
, iff_promiscs
;
446 struct rate_control_ref
*rate_ctrl
;
448 /* Supported and basic rate filters for different modes. These are
449 * pointers to -1 terminated lists and rates in 100 kbps units. */
450 int *supp_rates
[NUM_IEEE80211_MODES
];
451 int *basic_rates
[NUM_IEEE80211_MODES
];
454 int fragmentation_threshold
;
455 int short_retry_limit
; /* dot11ShortRetryLimit */
456 int long_retry_limit
; /* dot11LongRetryLimit */
458 struct crypto_blkcipher
*wep_tx_tfm
;
459 struct crypto_blkcipher
*wep_rx_tfm
;
462 int bridge_packets
; /* bridge packets between associated stations and
463 * deliver multicast frames both back to wireless
464 * media and to the local net stack */
466 ieee80211_rx_handler
*rx_pre_handlers
;
467 ieee80211_rx_handler
*rx_handlers
;
468 ieee80211_tx_handler
*tx_handlers
;
470 struct list_head interfaces
;
473 int scan_channel_idx
;
474 enum { SCAN_SET_CHANNEL
, SCAN_SEND_PROBE
} scan_state
;
475 unsigned long last_scan_completed
;
476 struct delayed_work scan_work
;
477 struct net_device
*scan_dev
;
478 struct ieee80211_channel
*oper_channel
, *scan_channel
;
479 struct ieee80211_hw_mode
*oper_hw_mode
, *scan_hw_mode
;
480 u8 scan_ssid
[IEEE80211_MAX_SSID_LEN
];
481 size_t scan_ssid_len
;
482 struct list_head sta_bss_list
;
483 struct ieee80211_sta_bss
*sta_bss_hash
[STA_HASH_SIZE
];
484 spinlock_t sta_bss_lock
;
485 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
486 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
487 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
491 /* dot11CountersTable */
492 u32 dot11TransmittedFragmentCount
;
493 u32 dot11MulticastTransmittedFrameCount
;
494 u32 dot11FailedCount
;
496 u32 dot11MultipleRetryCount
;
497 u32 dot11FrameDuplicateCount
;
498 u32 dot11ReceivedFragmentCount
;
499 u32 dot11MulticastReceivedFrameCount
;
500 u32 dot11TransmittedFrameCount
;
501 u32 dot11WEPUndecryptableCount
;
503 #ifdef CONFIG_MAC80211_LEDS
504 int tx_led_counter
, rx_led_counter
;
505 struct led_trigger
*tx_led
, *rx_led
;
506 char tx_led_name
[32], rx_led_name
[32];
512 #ifdef CONFIG_MAC80211_DEBUGFS
513 struct work_struct sta_debugfs_add
;
516 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
517 /* TX/RX handler statistics */
518 unsigned int tx_handlers_drop
;
519 unsigned int tx_handlers_queued
;
520 unsigned int tx_handlers_drop_unencrypted
;
521 unsigned int tx_handlers_drop_fragment
;
522 unsigned int tx_handlers_drop_wep
;
523 unsigned int tx_handlers_drop_not_assoc
;
524 unsigned int tx_handlers_drop_unauth_port
;
525 unsigned int rx_handlers_drop
;
526 unsigned int rx_handlers_queued
;
527 unsigned int rx_handlers_drop_nullfunc
;
528 unsigned int rx_handlers_drop_defrag
;
529 unsigned int rx_handlers_drop_short
;
530 unsigned int rx_handlers_drop_passive_scan
;
531 unsigned int tx_expand_skb_head
;
532 unsigned int tx_expand_skb_head_cloned
;
533 unsigned int rx_expand_skb_head
;
534 unsigned int rx_expand_skb_head2
;
535 unsigned int rx_handlers_fragments
;
536 unsigned int tx_status_drop
;
537 unsigned int wme_rx_queue
[NUM_RX_DATA_QUEUES
];
538 unsigned int wme_tx_queue
[NUM_RX_DATA_QUEUES
];
539 #define I802_DEBUG_INC(c) (c)++
540 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
541 #define I802_DEBUG_INC(c) do { } while (0)
542 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
545 int total_ps_buffered
; /* total number of all buffered unicast and
546 * multicast packets for power saving stations
548 int wifi_wme_noack_test
;
549 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
551 unsigned int enabled_modes
; /* bitfield of allowed modes;
553 unsigned int hw_modes
; /* bitfield of supported hardware modes;
558 #ifdef CONFIG_MAC80211_DEBUGFS
559 struct local_debugfsdentries
{
560 struct dentry
*channel
;
561 struct dentry
*frequency
;
562 struct dentry
*antenna_sel_tx
;
563 struct dentry
*antenna_sel_rx
;
564 struct dentry
*bridge_packets
;
565 struct dentry
*rts_threshold
;
566 struct dentry
*fragmentation_threshold
;
567 struct dentry
*short_retry_limit
;
568 struct dentry
*long_retry_limit
;
569 struct dentry
*total_ps_buffered
;
571 struct dentry
*wep_iv
;
572 struct dentry
*modes
;
573 struct dentry
*statistics
;
574 struct local_debugfsdentries_statsdentries
{
575 struct dentry
*transmitted_fragment_count
;
576 struct dentry
*multicast_transmitted_frame_count
;
577 struct dentry
*failed_count
;
578 struct dentry
*retry_count
;
579 struct dentry
*multiple_retry_count
;
580 struct dentry
*frame_duplicate_count
;
581 struct dentry
*received_fragment_count
;
582 struct dentry
*multicast_received_frame_count
;
583 struct dentry
*transmitted_frame_count
;
584 struct dentry
*wep_undecryptable_count
;
585 struct dentry
*num_scans
;
586 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
587 struct dentry
*tx_handlers_drop
;
588 struct dentry
*tx_handlers_queued
;
589 struct dentry
*tx_handlers_drop_unencrypted
;
590 struct dentry
*tx_handlers_drop_fragment
;
591 struct dentry
*tx_handlers_drop_wep
;
592 struct dentry
*tx_handlers_drop_not_assoc
;
593 struct dentry
*tx_handlers_drop_unauth_port
;
594 struct dentry
*rx_handlers_drop
;
595 struct dentry
*rx_handlers_queued
;
596 struct dentry
*rx_handlers_drop_nullfunc
;
597 struct dentry
*rx_handlers_drop_defrag
;
598 struct dentry
*rx_handlers_drop_short
;
599 struct dentry
*rx_handlers_drop_passive_scan
;
600 struct dentry
*tx_expand_skb_head
;
601 struct dentry
*tx_expand_skb_head_cloned
;
602 struct dentry
*rx_expand_skb_head
;
603 struct dentry
*rx_expand_skb_head2
;
604 struct dentry
*rx_handlers_fragments
;
605 struct dentry
*tx_status_drop
;
606 struct dentry
*wme_tx_queue
;
607 struct dentry
*wme_rx_queue
;
609 struct dentry
*dot11ACKFailureCount
;
610 struct dentry
*dot11RTSFailureCount
;
611 struct dentry
*dot11FCSErrorCount
;
612 struct dentry
*dot11RTSSuccessCount
;
614 struct dentry
*stations
;
620 static inline struct ieee80211_local
*hw_to_local(
621 struct ieee80211_hw
*hw
)
623 return container_of(hw
, struct ieee80211_local
, hw
);
626 static inline struct ieee80211_hw
*local_to_hw(
627 struct ieee80211_local
*local
)
632 enum ieee80211_link_state_t
{
633 IEEE80211_LINK_STATE_XOFF
= 0,
634 IEEE80211_LINK_STATE_PENDING
,
637 struct sta_attribute
{
638 struct attribute attr
;
639 ssize_t (*show
)(const struct sta_info
*, char *buf
);
640 ssize_t (*store
)(struct sta_info
*, const char *buf
, size_t count
);
643 static inline void __bss_tim_set(struct ieee80211_if_ap
*bss
, u16 aid
)
646 * This format has been mandated by the IEEE specifications,
647 * so this line may not be changed to use the __set_bit() format.
649 bss
->tim
[aid
/ 8] |= (1 << (aid
% 8));
652 static inline void bss_tim_set(struct ieee80211_local
*local
,
653 struct ieee80211_if_ap
*bss
, u16 aid
)
655 read_lock_bh(&local
->sta_lock
);
656 __bss_tim_set(bss
, aid
);
657 read_unlock_bh(&local
->sta_lock
);
660 static inline void __bss_tim_clear(struct ieee80211_if_ap
*bss
, u16 aid
)
663 * This format has been mandated by the IEEE specifications,
664 * so this line may not be changed to use the __clear_bit() format.
666 bss
->tim
[aid
/ 8] &= ~(1 << (aid
% 8));
669 static inline void bss_tim_clear(struct ieee80211_local
*local
,
670 struct ieee80211_if_ap
*bss
, u16 aid
)
672 read_lock_bh(&local
->sta_lock
);
673 __bss_tim_clear(bss
, aid
);
674 read_unlock_bh(&local
->sta_lock
);
678 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
679 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
680 * @rate: Transmission rate to check, in 100 kbps
682 * Check if a given rate is an Extended Rate PHY (ERP) rate.
684 static inline int ieee80211_is_erp_rate(int phymode
, int rate
)
686 if (phymode
== MODE_IEEE80211G
) {
687 if (rate
!= 10 && rate
!= 20 &&
688 rate
!= 55 && rate
!= 110)
694 static inline int ieee80211_bssid_match(const u8
*raddr
, const u8
*addr
)
696 return compare_ether_addr(raddr
, addr
) == 0 ||
697 is_broadcast_ether_addr(raddr
);
702 int ieee80211_hw_config(struct ieee80211_local
*local
);
703 int ieee80211_if_config(struct net_device
*dev
);
704 int ieee80211_if_config_beacon(struct net_device
*dev
);
705 void ieee80211_prepare_rates(struct ieee80211_local
*local
,
706 struct ieee80211_hw_mode
*mode
);
707 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data
*tx
);
708 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
);
709 void ieee80211_if_setup(struct net_device
*dev
);
710 struct ieee80211_rate
*ieee80211_get_rate(struct ieee80211_local
*local
,
711 int phymode
, int hwrate
);
713 /* ieee80211_ioctl.c */
714 extern const struct iw_handler_def ieee80211_iw_handler_def
;
717 /* Least common multiple of the used rates (in 100 kbps). This is used to
718 * calculate rate_inv values for each rate so that only integers are needed. */
719 #define CHAN_UTIL_RATE_LCM 95040
720 /* 1 usec is 1/8 * (95040/10) = 1188 */
721 #define CHAN_UTIL_PER_USEC 1188
722 /* Amount of bits to shift the result right to scale the total utilization
723 * to values that will not wrap around 32-bit integers. */
724 #define CHAN_UTIL_SHIFT 9
725 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
726 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
727 * raw value with about 23 should give utilization in 10th of a percentage
728 * (1/1000). However, utilization is only estimated and not all intervals
729 * between frames etc. are calculated. 18 seems to give numbers that are closer
730 * to the real maximum. */
731 #define CHAN_UTIL_PER_10MS 18
732 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
733 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
736 /* ieee80211_ioctl.c */
737 int ieee80211_set_compression(struct ieee80211_local
*local
,
738 struct net_device
*dev
, struct sta_info
*sta
);
739 int ieee80211_set_channel(struct ieee80211_local
*local
, int channel
, int freq
);
740 /* ieee80211_sta.c */
741 void ieee80211_sta_timer(unsigned long data
);
742 void ieee80211_sta_work(struct work_struct
*work
);
743 void ieee80211_sta_scan_work(struct work_struct
*work
);
744 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
745 struct ieee80211_rx_status
*rx_status
);
746 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
);
747 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
);
748 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
);
749 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
);
750 void ieee80211_sta_req_auth(struct net_device
*dev
,
751 struct ieee80211_if_sta
*ifsta
);
752 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
);
753 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
754 struct ieee80211_rx_status
*rx_status
);
755 void ieee80211_rx_bss_list_init(struct net_device
*dev
);
756 void ieee80211_rx_bss_list_deinit(struct net_device
*dev
);
757 int ieee80211_sta_set_extra_ie(struct net_device
*dev
, char *ie
, size_t len
);
758 struct sta_info
* ieee80211_ibss_add_sta(struct net_device
*dev
,
759 struct sk_buff
*skb
, u8
*bssid
,
761 int ieee80211_sta_deauthenticate(struct net_device
*dev
, u16 reason
);
762 int ieee80211_sta_disassociate(struct net_device
*dev
, u16 reason
);
763 void ieee80211_erp_info_change_notify(struct net_device
*dev
, u8 changes
);
764 void ieee80211_reset_erp_info(struct net_device
*dev
);
766 /* ieee80211_iface.c */
767 int ieee80211_if_add(struct net_device
*dev
, const char *name
,
768 struct net_device
**new_dev
, int type
);
769 void ieee80211_if_set_type(struct net_device
*dev
, int type
);
770 void ieee80211_if_reinit(struct net_device
*dev
);
771 void __ieee80211_if_del(struct ieee80211_local
*local
,
772 struct ieee80211_sub_if_data
*sdata
);
773 int ieee80211_if_remove(struct net_device
*dev
, const char *name
, int id
);
774 void ieee80211_if_free(struct net_device
*dev
);
775 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data
*sdata
);
778 void ieee80211_regdomain_init(void);
779 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode
*mode
);
782 extern ieee80211_rx_handler ieee80211_rx_pre_handlers
[];
783 extern ieee80211_rx_handler ieee80211_rx_handlers
[];
786 extern ieee80211_tx_handler ieee80211_tx_handlers
[];
787 void ieee80211_clear_tx_pending(struct ieee80211_local
*local
);
788 void ieee80211_tx_pending(unsigned long data
);
789 int ieee80211_master_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
790 int ieee80211_monitor_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
791 int ieee80211_subif_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
793 /* utility functions/constants */
794 extern void *mac80211_wiphy_privid
; /* for wiphy privid */
795 extern const unsigned char rfc1042_header
[6];
796 extern const unsigned char bridge_tunnel_header
[6];
797 u8
*ieee80211_get_bssid(struct ieee80211_hdr
*hdr
, size_t len
);
798 int ieee80211_is_eapol(const struct sk_buff
*skb
);
799 int ieee80211_frame_duration(struct ieee80211_local
*local
, size_t len
,
800 int rate
, int erp
, int short_preamble
);
801 void mac80211_ev_michael_mic_failure(struct net_device
*dev
, int keyidx
,
802 struct ieee80211_hdr
*hdr
);
804 #endif /* IEEE80211_I_H */