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 <net/wireless.h>
25 #include "ieee80211_key.h"
28 /* ieee80211.o internal definitions, etc. These are not included into
29 * low-level drivers. */
32 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
33 #endif /* ETH_P_PAE */
35 #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)
37 struct ieee80211_local
;
39 #define BIT(x) (1 << (x))
41 #define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)
43 /* Maximum number of broadcast/multicast frames to buffer when some of the
44 * associated stations are using power saving. */
45 #define AP_MAX_BC_BUFFER 128
47 /* Maximum number of frames buffered to all STAs, including multicast frames.
48 * Note: increasing this limit increases the potential memory requirement. Each
49 * frame can be up to about 2 kB long. */
50 #define TOTAL_MAX_TX_BUFFER 512
52 /* Required encryption head and tailroom */
53 #define IEEE80211_ENCRYPT_HEADROOM 8
54 #define IEEE80211_ENCRYPT_TAILROOM 12
56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
57 * reception of at least three fragmented frames. This limit can be increased
58 * by changing this define, at the cost of slower frame reassembly and
59 * increased memory use (about 2 kB of RAM per entry). */
60 #define IEEE80211_FRAGMENT_MAX 4
62 struct ieee80211_fragment_entry
{
63 unsigned long first_frag_time
;
65 unsigned int rx_queue
;
66 unsigned int last_frag
;
67 unsigned int extra_len
;
68 struct sk_buff_head skb_list
;
69 int ccmp
; /* Whether fragments were encrypted with CCMP */
70 u8 last_pn
[6]; /* PN of the last fragment if CCMP was used */
74 struct ieee80211_sta_bss
{
75 struct list_head list
;
76 struct ieee80211_sta_bss
*hnext
;
80 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
82 u16 capability
; /* host byte order */
86 int rssi
, signal
, noise
;
93 #define IEEE80211_MAX_SUPP_RATES 32
94 u8 supp_rates
[IEEE80211_MAX_SUPP_RATES
];
95 size_t supp_rates_len
;
100 unsigned long last_update
;
102 /* during assocation, we save an ERP value from a probe response so
103 * that we can feed ERP info to the driver when handling the
104 * association completes. these fields probably won't be up-to-date
105 * otherwise, you probably don't want to use them. */
112 TXRX_CONTINUE
, TXRX_DROP
, TXRX_QUEUED
113 } ieee80211_txrx_result
;
115 struct ieee80211_txrx_data
{
117 struct net_device
*dev
;
118 struct ieee80211_local
*local
;
119 struct ieee80211_sub_if_data
*sdata
;
120 struct sta_info
*sta
;
122 struct ieee80211_key
*key
;
123 unsigned int fragmented
:1; /* whether the MSDU was fragmented */
126 struct ieee80211_tx_control
*control
;
127 unsigned int unicast
:1;
128 unsigned int ps_buffered
:1;
129 unsigned int short_preamble
:1;
130 unsigned int probe_last_frag
:1;
131 struct ieee80211_hw_mode
*mode
;
132 struct ieee80211_rate
*rate
;
133 /* use this rate (if set) for last fragment; rate can
134 * be set to lower rate for the first fragments, e.g.,
135 * when using CTS protection with IEEE 802.11g. */
136 struct ieee80211_rate
*last_frag_rate
;
137 int last_frag_hwrate
;
140 /* Extra fragments (in addition to the first fragment
143 struct sk_buff
**extra_frag
;
146 struct ieee80211_rx_status
*status
;
147 int sent_ps_buffered
;
150 unsigned int in_scan
:1;
151 /* frame is destined to interface currently processed
152 * (including multicast frames) */
153 unsigned int ra_match
:1;
158 /* Stored in sk_buff->cb */
159 struct ieee80211_tx_packet_data
{
161 unsigned long jiffies
;
162 unsigned int req_tx_status
:1;
163 unsigned int do_not_encrypt
:1;
164 unsigned int requeue
:1;
165 unsigned int mgmt_iface
:1;
166 unsigned int queue
:4;
169 struct ieee80211_tx_stored_packet
{
170 struct ieee80211_tx_control control
;
173 struct sk_buff
**extra_frag
;
174 int last_frag_rateidx
;
175 int last_frag_hwrate
;
176 struct ieee80211_rate
*last_frag_rate
;
177 unsigned int last_frag_rate_ctrl_probe
:1;
180 typedef ieee80211_txrx_result (*ieee80211_tx_handler
)
181 (struct ieee80211_txrx_data
*tx
);
183 typedef ieee80211_txrx_result (*ieee80211_rx_handler
)
184 (struct ieee80211_txrx_data
*rx
);
186 struct ieee80211_if_ap
{
187 u8
*beacon_head
, *beacon_tail
;
188 int beacon_head_len
, beacon_tail_len
;
190 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
193 size_t generic_elem_len
;
195 /* yes, this looks ugly, but guarantees that we can later use
197 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
198 u8 tim
[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID
+ 1)];
199 atomic_t num_sta_ps
; /* number of stations in PS mode */
200 struct sk_buff_head ps_bc_buf
;
201 int dtim_period
, dtim_count
;
202 int force_unicast_rateidx
; /* forced TX rateidx for unicast frames */
203 int max_ratectrl_rateidx
; /* max TX rateidx for rate control */
204 int num_beacons
; /* number of TXed beacon frames for this BSS */
207 struct ieee80211_if_wds
{
208 u8 remote_addr
[ETH_ALEN
];
209 struct sta_info
*sta
;
212 struct ieee80211_if_vlan
{
216 struct ieee80211_if_sta
{
218 IEEE80211_DISABLED
, IEEE80211_AUTHENTICATE
,
219 IEEE80211_ASSOCIATE
, IEEE80211_ASSOCIATED
,
220 IEEE80211_IBSS_SEARCH
, IEEE80211_IBSS_JOINED
222 struct timer_list timer
;
223 struct work_struct work
;
224 u8 bssid
[ETH_ALEN
], prev_bssid
[ETH_ALEN
];
225 u8 ssid
[IEEE80211_MAX_SSID_LEN
];
229 u8
*extra_ie
; /* to be added to the end of AssocReq */
232 /* The last AssocReq/Resp IEs */
233 u8
*assocreq_ies
, *assocresp_ies
;
234 size_t assocreq_ies_len
, assocresp_ies_len
;
236 int auth_tries
, assoc_tries
;
238 unsigned int ssid_set
:1;
239 unsigned int bssid_set
:1;
240 unsigned int prev_bssid_set
:1;
241 unsigned int authenticated
:1;
242 unsigned int associated
:1;
243 unsigned int probereq_poll
:1;
244 unsigned int create_ibss
:1;
245 unsigned int mixed_cell
:1;
246 unsigned int wmm_enabled
:1;
247 unsigned int auto_ssid_sel
:1;
248 unsigned int auto_bssid_sel
:1;
249 unsigned int auto_channel_sel
:1;
250 #define IEEE80211_STA_REQ_SCAN 0
251 #define IEEE80211_STA_REQ_AUTH 1
252 #define IEEE80211_STA_REQ_RUN 2
253 unsigned long request
;
254 struct sk_buff_head skb_queue
;
257 unsigned long last_probe
;
259 #define IEEE80211_AUTH_ALG_OPEN BIT(0)
260 #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
261 #define IEEE80211_AUTH_ALG_LEAP BIT(2)
262 unsigned int auth_algs
; /* bitfield of allowed auth algs */
263 int auth_alg
; /* currently used IEEE 802.11 authentication algorithm */
264 int auth_transaction
;
266 unsigned long ibss_join_req
;
267 struct sk_buff
*probe_resp
; /* ProbeResp template for IBSS */
270 int wmm_last_param_set
;
274 struct ieee80211_sub_if_data
{
275 struct list_head list
;
278 struct wireless_dev wdev
;
280 struct net_device
*dev
;
281 struct ieee80211_local
*local
;
284 unsigned int allmulti
:1;
285 unsigned int promisc
:1;
286 unsigned int use_protection
:1; /* CTS protect ERP frames */
288 struct net_device_stats stats
;
289 int drop_unencrypted
;
290 int eapol
; /* 0 = process EAPOL frames as normal data frames,
291 * 1 = send EAPOL frames through wlan#ap to hostapd
293 int ieee802_1x
; /* IEEE 802.1X PAE - drop packet to/from unauthorized
298 /* Fragment table for host-based reassembly */
299 struct ieee80211_fragment_entry fragments
[IEEE80211_FRAGMENT_MAX
];
300 unsigned int fragment_next
;
302 #define NUM_DEFAULT_KEYS 4
303 struct ieee80211_key
*keys
[NUM_DEFAULT_KEYS
];
304 struct ieee80211_key
*default_key
;
306 struct ieee80211_if_ap
*bss
; /* BSS that this device belongs to */
309 struct ieee80211_if_ap ap
;
310 struct ieee80211_if_wds wds
;
311 struct ieee80211_if_vlan vlan
;
312 struct ieee80211_if_sta sta
;
317 #ifdef CONFIG_MAC80211_DEBUGFS
318 struct dentry
*debugfsdir
;
321 struct dentry
*channel_use
;
322 struct dentry
*drop_unencrypted
;
323 struct dentry
*eapol
;
324 struct dentry
*ieee8021_x
;
325 struct dentry
*state
;
326 struct dentry
*bssid
;
327 struct dentry
*prev_bssid
;
328 struct dentry
*ssid_len
;
330 struct dentry
*ap_capab
;
331 struct dentry
*capab
;
332 struct dentry
*extra_ie_len
;
333 struct dentry
*auth_tries
;
334 struct dentry
*assoc_tries
;
335 struct dentry
*auth_algs
;
336 struct dentry
*auth_alg
;
337 struct dentry
*auth_transaction
;
338 struct dentry
*flags
;
341 struct dentry
*channel_use
;
342 struct dentry
*drop_unencrypted
;
343 struct dentry
*eapol
;
344 struct dentry
*ieee8021_x
;
345 struct dentry
*num_sta_ps
;
346 struct dentry
*dtim_period
;
347 struct dentry
*dtim_count
;
348 struct dentry
*num_beacons
;
349 struct dentry
*force_unicast_rateidx
;
350 struct dentry
*max_ratectrl_rateidx
;
351 struct dentry
*num_buffered_multicast
;
352 struct dentry
*beacon_head_len
;
353 struct dentry
*beacon_tail_len
;
356 struct dentry
*channel_use
;
357 struct dentry
*drop_unencrypted
;
358 struct dentry
*eapol
;
359 struct dentry
*ieee8021_x
;
363 struct dentry
*channel_use
;
364 struct dentry
*drop_unencrypted
;
365 struct dentry
*eapol
;
366 struct dentry
*ieee8021_x
;
367 struct dentry
*vlan_id
;
372 struct dentry
*default_key
;
377 #define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)
380 IEEE80211_RX_MSG
= 1,
381 IEEE80211_TX_STATUS_MSG
= 2,
384 struct ieee80211_local
{
385 /* embed the driver visible part.
386 * don't cast (use the static inlines below), but we keep
387 * it first anyway so they become a no-op */
388 struct ieee80211_hw hw
;
390 const struct ieee80211_ops
*ops
;
392 /* List of registered struct ieee80211_hw_mode */
393 struct list_head modes_list
;
395 struct net_device
*mdev
; /* wmaster# - "master" 802.11 device */
396 struct net_device
*apdev
; /* wlan#ap - management frames (hostapd) */
399 struct iw_statistics wstats
;
401 int tx_headroom
; /* required headroom for hardware/radiotap */
404 IEEE80211_DEV_UNINITIALIZED
= 0,
405 IEEE80211_DEV_REGISTERED
,
406 IEEE80211_DEV_UNREGISTERED
,
409 /* Tasklet and skb queue to process calls from IRQ mode. All frames
410 * added to skb_queue will be processed, but frames in
411 * skb_queue_unreliable may be dropped if the total length of these
412 * queues increases over the limit. */
413 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
414 struct tasklet_struct tasklet
;
415 struct sk_buff_head skb_queue
;
416 struct sk_buff_head skb_queue_unreliable
;
418 /* Station data structures */
419 spinlock_t sta_lock
; /* mutex for STA data structures */
420 int num_sta
; /* number of stations in sta_list */
421 struct list_head sta_list
;
422 struct list_head deleted_sta_list
;
423 struct sta_info
*sta_hash
[STA_HASH_SIZE
];
424 struct timer_list sta_cleanup
;
426 unsigned long state
[NUM_TX_DATA_QUEUES
];
427 struct ieee80211_tx_stored_packet pending_packet
[NUM_TX_DATA_QUEUES
];
428 struct tasklet_struct tx_pending_tasklet
;
430 int mc_count
; /* total count of multicast entries in all interfaces */
431 int iff_allmultis
, iff_promiscs
;
432 /* number of interfaces with corresponding IFF_ flags */
434 struct rate_control_ref
*rate_ctrl
;
436 int next_mode
; /* MODE_IEEE80211*
437 * The mode preference for next channel change. This is
438 * used to select .11g vs. .11b channels (or 4.9 GHz vs.
439 * .11a) when the channel number is not unique. */
441 /* Supported and basic rate filters for different modes. These are
442 * pointers to -1 terminated lists and rates in 100 kbps units. */
443 int *supp_rates
[NUM_IEEE80211_MODES
];
444 int *basic_rates
[NUM_IEEE80211_MODES
];
447 int fragmentation_threshold
;
448 int short_retry_limit
; /* dot11ShortRetryLimit */
449 int long_retry_limit
; /* dot11LongRetryLimit */
450 int short_preamble
; /* use short preamble with IEEE 802.11b */
452 struct crypto_blkcipher
*wep_tx_tfm
;
453 struct crypto_blkcipher
*wep_rx_tfm
;
455 int key_tx_rx_threshold
; /* number of times any key can be used in TX
456 * or RX before generating a rekey
457 * notification; 0 = notification disabled. */
459 int bridge_packets
; /* bridge packets between associated stations and
460 * deliver multicast frames both back to wireless
461 * media and to the local net stack */
463 ieee80211_rx_handler
*rx_pre_handlers
;
464 ieee80211_rx_handler
*rx_handlers
;
465 ieee80211_tx_handler
*tx_handlers
;
467 rwlock_t sub_if_lock
; /* Protects sub_if_list. Cannot be taken under
468 * sta_bss_lock or sta_lock. */
469 struct list_head sub_if_list
;
471 int scan_channel_idx
;
472 enum { SCAN_SET_CHANNEL
, SCAN_SEND_PROBE
} scan_state
;
473 unsigned long last_scan_completed
;
474 struct delayed_work scan_work
;
475 struct net_device
*scan_dev
;
476 struct ieee80211_channel
*oper_channel
, *scan_channel
;
477 struct ieee80211_hw_mode
*oper_hw_mode
, *scan_hw_mode
;
478 u8 scan_ssid
[IEEE80211_MAX_SSID_LEN
];
479 size_t scan_ssid_len
;
480 struct list_head sta_bss_list
;
481 struct ieee80211_sta_bss
*sta_bss_hash
[STA_HASH_SIZE
];
482 spinlock_t sta_bss_lock
;
483 #define IEEE80211_SCAN_MATCH_SSID BIT(0)
484 #define IEEE80211_SCAN_WPA_ONLY BIT(1)
485 #define IEEE80211_SCAN_EXTRA_INFO BIT(2)
489 /* dot11CountersTable */
490 u32 dot11TransmittedFragmentCount
;
491 u32 dot11MulticastTransmittedFrameCount
;
492 u32 dot11FailedCount
;
494 u32 dot11MultipleRetryCount
;
495 u32 dot11FrameDuplicateCount
;
496 u32 dot11ReceivedFragmentCount
;
497 u32 dot11MulticastReceivedFrameCount
;
498 u32 dot11TransmittedFrameCount
;
499 u32 dot11WEPUndecryptableCount
;
501 #ifdef CONFIG_MAC80211_LEDS
502 int tx_led_counter
, rx_led_counter
;
503 struct led_trigger
*tx_led
, *rx_led
;
504 char tx_led_name
[32], rx_led_name
[32];
510 struct timer_list stat_timer
;
512 #ifdef CONFIG_MAC80211_DEBUGFS
513 struct work_struct sta_debugfs_add
;
517 STA_ANTENNA_SEL_AUTO
= 0,
518 STA_ANTENNA_SEL_SW_CTRL
= 1,
519 STA_ANTENNA_SEL_SW_CTRL_DEBUG
= 2
522 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
523 /* TX/RX handler statistics */
524 unsigned int tx_handlers_drop
;
525 unsigned int tx_handlers_queued
;
526 unsigned int tx_handlers_drop_unencrypted
;
527 unsigned int tx_handlers_drop_fragment
;
528 unsigned int tx_handlers_drop_wep
;
529 unsigned int tx_handlers_drop_not_assoc
;
530 unsigned int tx_handlers_drop_unauth_port
;
531 unsigned int rx_handlers_drop
;
532 unsigned int rx_handlers_queued
;
533 unsigned int rx_handlers_drop_nullfunc
;
534 unsigned int rx_handlers_drop_defrag
;
535 unsigned int rx_handlers_drop_short
;
536 unsigned int rx_handlers_drop_passive_scan
;
537 unsigned int tx_expand_skb_head
;
538 unsigned int tx_expand_skb_head_cloned
;
539 unsigned int rx_expand_skb_head
;
540 unsigned int rx_expand_skb_head2
;
541 unsigned int rx_handlers_fragments
;
542 unsigned int tx_status_drop
;
543 unsigned int wme_rx_queue
[NUM_RX_DATA_QUEUES
];
544 unsigned int wme_tx_queue
[NUM_RX_DATA_QUEUES
];
545 #define I802_DEBUG_INC(c) (c)++
546 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */
547 #define I802_DEBUG_INC(c) do { } while (0)
548 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
551 int default_wep_only
; /* only default WEP keys are used with this
552 * interface; this is used to decide when hwaccel
553 * can be used with default keys */
554 int total_ps_buffered
; /* total number of all buffered unicast and
555 * multicast packets for power saving stations
557 int allow_broadcast_always
; /* whether to allow TX of broadcast frames
558 * even when there are no associated STAs
561 int wifi_wme_noack_test
;
562 unsigned int wmm_acm
; /* bit field of ACM bits (BIT(802.1D tag)) */
564 unsigned int enabled_modes
; /* bitfield of allowed modes;
566 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
*radar_detect
;
576 struct dentry
*antenna_sel_tx
;
577 struct dentry
*antenna_sel_rx
;
578 struct dentry
*bridge_packets
;
579 struct dentry
*key_tx_rx_threshold
;
580 struct dentry
*rts_threshold
;
581 struct dentry
*fragmentation_threshold
;
582 struct dentry
*short_retry_limit
;
583 struct dentry
*long_retry_limit
;
584 struct dentry
*total_ps_buffered
;
586 struct dentry
*wep_iv
;
587 struct dentry
*tx_power_reduction
;
588 struct dentry
*modes
;
589 struct dentry
*statistics
;
590 struct local_debugfsdentries_statsdentries
{
591 struct dentry
*transmitted_fragment_count
;
592 struct dentry
*multicast_transmitted_frame_count
;
593 struct dentry
*failed_count
;
594 struct dentry
*retry_count
;
595 struct dentry
*multiple_retry_count
;
596 struct dentry
*frame_duplicate_count
;
597 struct dentry
*received_fragment_count
;
598 struct dentry
*multicast_received_frame_count
;
599 struct dentry
*transmitted_frame_count
;
600 struct dentry
*wep_undecryptable_count
;
601 struct dentry
*num_scans
;
602 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
603 struct dentry
*tx_handlers_drop
;
604 struct dentry
*tx_handlers_queued
;
605 struct dentry
*tx_handlers_drop_unencrypted
;
606 struct dentry
*tx_handlers_drop_fragment
;
607 struct dentry
*tx_handlers_drop_wep
;
608 struct dentry
*tx_handlers_drop_not_assoc
;
609 struct dentry
*tx_handlers_drop_unauth_port
;
610 struct dentry
*rx_handlers_drop
;
611 struct dentry
*rx_handlers_queued
;
612 struct dentry
*rx_handlers_drop_nullfunc
;
613 struct dentry
*rx_handlers_drop_defrag
;
614 struct dentry
*rx_handlers_drop_short
;
615 struct dentry
*rx_handlers_drop_passive_scan
;
616 struct dentry
*tx_expand_skb_head
;
617 struct dentry
*tx_expand_skb_head_cloned
;
618 struct dentry
*rx_expand_skb_head
;
619 struct dentry
*rx_expand_skb_head2
;
620 struct dentry
*rx_handlers_fragments
;
621 struct dentry
*tx_status_drop
;
622 struct dentry
*wme_tx_queue
;
623 struct dentry
*wme_rx_queue
;
625 struct dentry
*dot11ACKFailureCount
;
626 struct dentry
*dot11RTSFailureCount
;
627 struct dentry
*dot11FCSErrorCount
;
628 struct dentry
*dot11RTSSuccessCount
;
630 struct dentry
*stations
;
636 static inline struct ieee80211_local
*hw_to_local(
637 struct ieee80211_hw
*hw
)
639 return container_of(hw
, struct ieee80211_local
, hw
);
642 static inline struct ieee80211_hw
*local_to_hw(
643 struct ieee80211_local
*local
)
648 enum ieee80211_link_state_t
{
649 IEEE80211_LINK_STATE_XOFF
= 0,
650 IEEE80211_LINK_STATE_PENDING
,
653 struct sta_attribute
{
654 struct attribute attr
;
655 ssize_t (*show
)(const struct sta_info
*, char *buf
);
656 ssize_t (*store
)(struct sta_info
*, const char *buf
, size_t count
);
659 static inline void __bss_tim_set(struct ieee80211_if_ap
*bss
, int aid
)
662 * This format has ben mandated by the IEEE specifications,
663 * so this line may not be changed to use the __set_bit() format.
665 bss
->tim
[(aid
)/8] |= 1<<((aid
) % 8);
668 static inline void bss_tim_set(struct ieee80211_local
*local
,
669 struct ieee80211_if_ap
*bss
, int aid
)
671 spin_lock_bh(&local
->sta_lock
);
672 __bss_tim_set(bss
, aid
);
673 spin_unlock_bh(&local
->sta_lock
);
676 static inline void __bss_tim_clear(struct ieee80211_if_ap
*bss
, int aid
)
679 * This format has ben mandated by the IEEE specifications,
680 * so this line may not be changed to use the __clear_bit() format.
682 bss
->tim
[(aid
)/8] &= !(1<<((aid
) % 8));
685 static inline void bss_tim_clear(struct ieee80211_local
*local
,
686 struct ieee80211_if_ap
*bss
, int aid
)
688 spin_lock_bh(&local
->sta_lock
);
689 __bss_tim_clear(bss
, aid
);
690 spin_unlock_bh(&local
->sta_lock
);
694 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
695 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
696 * @rate: Transmission rate to check, in 100 kbps
698 * Check if a given rate is an Extended Rate PHY (ERP) rate.
700 static inline int ieee80211_is_erp_rate(int phymode
, int rate
)
702 if (phymode
== MODE_IEEE80211G
) {
703 if (rate
!= 10 && rate
!= 20 &&
704 rate
!= 55 && rate
!= 110)
711 int ieee80211_hw_config(struct ieee80211_local
*local
);
712 int ieee80211_if_config(struct net_device
*dev
);
713 int ieee80211_if_config_beacon(struct net_device
*dev
);
714 struct ieee80211_key_conf
*
715 ieee80211_key_data2conf(struct ieee80211_local
*local
,
716 const struct ieee80211_key
*data
);
717 struct ieee80211_key
*ieee80211_key_alloc(struct ieee80211_sub_if_data
*sdata
,
718 int idx
, size_t key_len
, gfp_t flags
);
719 void ieee80211_key_free(struct ieee80211_key
*key
);
720 void ieee80211_rx_mgmt(struct ieee80211_local
*local
, struct sk_buff
*skb
,
721 struct ieee80211_rx_status
*status
, u32 msg_type
);
722 void ieee80211_prepare_rates(struct ieee80211_local
*local
,
723 struct ieee80211_hw_mode
*mode
);
724 void ieee80211_tx_set_iswep(struct ieee80211_txrx_data
*tx
);
725 int ieee80211_if_update_wds(struct net_device
*dev
, u8
*remote_addr
);
726 int ieee80211_monitor_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
727 int ieee80211_subif_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
728 void ieee80211_if_setup(struct net_device
*dev
);
729 void ieee80211_if_mgmt_setup(struct net_device
*dev
);
730 int ieee80211_init_rate_ctrl_alg(struct ieee80211_local
*local
,
732 struct net_device_stats
*ieee80211_dev_stats(struct net_device
*dev
);
734 /* ieee80211_ioctl.c */
735 extern const struct iw_handler_def ieee80211_iw_handler_def
;
737 void ieee80211_update_default_wep_only(struct ieee80211_local
*local
);
740 /* Least common multiple of the used rates (in 100 kbps). This is used to
741 * calculate rate_inv values for each rate so that only integers are needed. */
742 #define CHAN_UTIL_RATE_LCM 95040
743 /* 1 usec is 1/8 * (95040/10) = 1188 */
744 #define CHAN_UTIL_PER_USEC 1188
745 /* Amount of bits to shift the result right to scale the total utilization
746 * to values that will not wrap around 32-bit integers. */
747 #define CHAN_UTIL_SHIFT 9
748 /* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
749 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
750 * raw value with about 23 should give utilization in 10th of a percentage
751 * (1/1000). However, utilization is only estimated and not all intervals
752 * between frames etc. are calculated. 18 seems to give numbers that are closer
753 * to the real maximum. */
754 #define CHAN_UTIL_PER_10MS 18
755 #define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
756 #define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)
759 /* ieee80211_ioctl.c */
760 int ieee80211_set_compression(struct ieee80211_local
*local
,
761 struct net_device
*dev
, struct sta_info
*sta
);
762 int ieee80211_set_channel(struct ieee80211_local
*local
, int channel
, int freq
);
763 /* ieee80211_sta.c */
764 void ieee80211_sta_timer(unsigned long data
);
765 void ieee80211_sta_work(struct work_struct
*work
);
766 void ieee80211_sta_scan_work(struct work_struct
*work
);
767 void ieee80211_sta_rx_mgmt(struct net_device
*dev
, struct sk_buff
*skb
,
768 struct ieee80211_rx_status
*rx_status
);
769 int ieee80211_sta_set_ssid(struct net_device
*dev
, char *ssid
, size_t len
);
770 int ieee80211_sta_get_ssid(struct net_device
*dev
, char *ssid
, size_t *len
);
771 int ieee80211_sta_set_bssid(struct net_device
*dev
, u8
*bssid
);
772 int ieee80211_sta_req_scan(struct net_device
*dev
, u8
*ssid
, size_t ssid_len
);
773 void ieee80211_sta_req_auth(struct net_device
*dev
,
774 struct ieee80211_if_sta
*ifsta
);
775 int ieee80211_sta_scan_results(struct net_device
*dev
, char *buf
, size_t len
);
776 void ieee80211_sta_rx_scan(struct net_device
*dev
, struct sk_buff
*skb
,
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
);
787 /* ieee80211_iface.c */
788 int ieee80211_if_add(struct net_device
*dev
, const char *name
,
789 struct net_device
**new_dev
, int type
);
790 void ieee80211_if_set_type(struct net_device
*dev
, int type
);
791 void ieee80211_if_reinit(struct net_device
*dev
);
792 void __ieee80211_if_del(struct ieee80211_local
*local
,
793 struct ieee80211_sub_if_data
*sdata
);
794 int ieee80211_if_remove(struct net_device
*dev
, const char *name
, int id
);
795 void ieee80211_if_free(struct net_device
*dev
);
796 void ieee80211_if_sdata_init(struct ieee80211_sub_if_data
*sdata
);
797 int ieee80211_if_add_mgmt(struct ieee80211_local
*local
);
798 void ieee80211_if_del_mgmt(struct ieee80211_local
*local
);
801 void ieee80211_regdomain_init(void);
802 void ieee80211_set_default_regdomain(struct ieee80211_hw_mode
*mode
);
804 /* for wiphy privid */
805 extern void *mac80211_wiphy_privid
;
807 #endif /* IEEE80211_I_H */