summaryrefslogtreecommitdiff
path: root/net/mac80211/ieee80211_i.h
blob: ae94d64617988f07261373b67f39b89f6a1ee65f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef IEEE80211_I_H
#define IEEE80211_I_H

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/if_ether.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <net/wireless.h>
#include "ieee80211_key.h"
#include "sta_info.h"

/* ieee80211.o internal definitions, etc. These are not included into
 * low-level drivers. */

#ifndef ETH_P_PAE
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
#endif /* ETH_P_PAE */

#define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08)

struct ieee80211_local;

#define BIT(x) (1 << (x))

#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3)

/* Maximum number of broadcast/multicast frames to buffer when some of the
 * associated stations are using power saving. */
#define AP_MAX_BC_BUFFER 128

/* Maximum number of frames buffered to all STAs, including multicast frames.
 * Note: increasing this limit increases the potential memory requirement. Each
 * frame can be up to about 2 kB long. */
#define TOTAL_MAX_TX_BUFFER 512

/* Required encryption head and tailroom */
#define IEEE80211_ENCRYPT_HEADROOM 8
#define IEEE80211_ENCRYPT_TAILROOM 12

/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
 * reception of at least three fragmented frames. This limit can be increased
 * by changing this define, at the cost of slower frame reassembly and
 * increased memory use (about 2 kB of RAM per entry). */
#define IEEE80211_FRAGMENT_MAX 4

struct ieee80211_fragment_entry {
	unsigned long first_frag_time;
	unsigned int seq;
	unsigned int rx_queue;
	unsigned int last_frag;
	unsigned int extra_len;
	struct sk_buff_head skb_list;
	int ccmp; /* Whether fragments were encrypted with CCMP */
	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
};


struct ieee80211_sta_bss {
	struct list_head list;
	struct ieee80211_sta_bss *hnext;
	atomic_t users;

	u8 bssid[ETH_ALEN];
	u8 ssid[IEEE80211_MAX_SSID_LEN];
	size_t ssid_len;
	u16 capability; /* host byte order */
	int hw_mode;
	int channel;
	int freq;
	int rssi, signal, noise;
	u8 *wpa_ie;
	size_t wpa_ie_len;
	u8 *rsn_ie;
	size_t rsn_ie_len;
	u8 *wmm_ie;
	size_t wmm_ie_len;
#define IEEE80211_MAX_SUPP_RATES 32
	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
	size_t supp_rates_len;
	int beacon_int;
	u64 timestamp;

	int probe_resp;
	unsigned long last_update;

};


typedef enum {
	TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED
} ieee80211_txrx_result;

struct ieee80211_txrx_data {
	struct sk_buff *skb;
	struct net_device *dev;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	u16 fc, ethertype;
	struct ieee80211_key *key;
	unsigned int fragmented:1; /* whether the MSDU was fragmented */
	union {
		struct {
			struct ieee80211_tx_control *control;
			unsigned int unicast:1;
			unsigned int ps_buffered:1;
			unsigned int short_preamble:1;
			unsigned int probe_last_frag:1;
			struct ieee80211_hw_mode *mode;
			struct ieee80211_rate *rate;
			/* use this rate (if set) for last fragment; rate can
			 * be set to lower rate for the first fragments, e.g.,
			 * when using CTS protection with IEEE 802.11g. */
			struct ieee80211_rate *last_frag_rate;
			int last_frag_hwrate;
			int mgmt_interface;

			/* Extra fragments (in addition to the first fragment
			 * in skb) */
			int num_extra_frag;
			struct sk_buff **extra_frag;
		} tx;
		struct {
			struct ieee80211_rx_status *status;
			int sent_ps_buffered;
			int queue;
			int load;
			unsigned int in_scan:1;
			/* frame is destined to interface currently processed
			 * (including multicast frames) */
			unsigned int ra_match:1;
		} rx;
	} u;
};

/* Stored in sk_buff->cb */
struct ieee80211_tx_packet_data {
	int ifindex;
	unsigned long jiffies;
	unsigned int req_tx_status:1;
	unsigned int do_not_encrypt:1;
	unsigned int requeue:1;
	unsigned int mgmt_iface:1;
	unsigned int queue:4;
};

struct ieee80211_tx_stored_packet {
	struct ieee80211_tx_control control;
	struct sk_buff *skb;
	int num_extra_frag;
	struct sk_buff **extra_frag;
	int last_frag_rateidx;
	int last_frag_hwrate;
	struct ieee80211_rate *last_frag_rate;
	unsigned int last_frag_rate_ctrl_probe:1;
};

typedef ieee80211_txrx_result (*ieee80211_tx_handler)
(struct ieee80211_txrx_data *tx);

typedef ieee80211_txrx_result (*ieee80211_rx_handler)
(struct ieee80211_txrx_data *rx);

struct ieee80211_if_ap {
	u8 *beacon_head, *beacon_tail;
	int beacon_head_len, beacon_tail_len;

	u8 ssid[IEEE80211_MAX_SSID_LEN];
	size_t ssid_len;
	u8 *generic_elem;
	size_t generic_elem_len;

	/* yes, this looks ugly, but guarantees that we can later use
	 * bitmap_empty :)
	 * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */
	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
	atomic_t num_sta_ps; /* number of stations in PS mode */
	struct sk_buff_head ps_bc_buf;
	int dtim_period, dtim_count;
	int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
	int max_ratectrl_rateidx; /* max TX rateidx for rate control */
	int num_beacons; /* number of TXed beacon frames for this BSS */
};

struct ieee80211_if_wds {
	u8 remote_addr[ETH_ALEN];
	struct sta_info *sta;
};

struct ieee80211_if_vlan {
	u8 id;
};

struct ieee80211_if_sta {
	enum {
		IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
		IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
		IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
	} state;
	struct timer_list timer;
	struct work_struct work;
	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
	u8 ssid[IEEE80211_MAX_SSID_LEN];
	size_t ssid_len;
	u16 aid;
	u16 ap_capab, capab;
	u8 *extra_ie; /* to be added to the end of AssocReq */
	size_t extra_ie_len;

	/* The last AssocReq/Resp IEs */
	u8 *assocreq_ies, *assocresp_ies;
	size_t assocreq_ies_len, assocresp_ies_len;

	int auth_tries, assoc_tries;

	unsigned int ssid_set:1;
	unsigned int bssid_set:1;
	unsigned int prev_bssid_set:1;
	unsigned int authenticated:1;
	unsigned int associated:1;
	unsigned int probereq_poll:1;
	unsigned int use_protection:1;
	unsigned int create_ibss:1;
	unsigned int mixed_cell:1;
	unsigned int wmm_enabled:1;
	unsigned int auto_ssid_sel:1;
	unsigned int auto_bssid_sel:1;
	unsigned int auto_channel_sel:1;
#define IEEE80211_STA_REQ_SCAN 0
#define IEEE80211_STA_REQ_AUTH 1
#define IEEE80211_STA_REQ_RUN  2
	unsigned long request;
	struct sk_buff_head skb_queue;

	int key_mgmt;
	unsigned long last_probe;

#define IEEE80211_AUTH_ALG_OPEN BIT(0)
#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
#define IEEE80211_AUTH_ALG_LEAP BIT(2)
	unsigned int auth_algs; /* bitfield of allowed auth algs */
	int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
	int auth_transaction;

	unsigned long ibss_join_req;
	struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
	u32 supp_rates_bits;

	int wmm_last_param_set;
};


struct ieee80211_sub_if_data {
	struct list_head list;
	unsigned int type;

	struct wireless_dev wdev;

	struct net_device *dev;
	struct ieee80211_local *local;

	int mc_count;
	unsigned int allmulti:1;
	unsigned int promisc:1;

	struct net_device_stats stats;
	int drop_unencrypted;
	int eapol; /* 0 = process EAPOL frames as normal data frames,
		    * 1 = send EAPOL frames through wlan#ap to hostapd
		    *     (default) */
	int ieee802_1x; /* IEEE 802.1X PAE - drop packet to/from unauthorized
			 * port */

	u16 sequence;

	/* Fragment table for host-based reassembly */
	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
	unsigned int fragment_next;

#define NUM_DEFAULT_KEYS 4
	struct ieee80211_key *keys[NUM_DEFAULT_KEYS];
	struct ieee80211_key *default_key;

	struct ieee80211_if_ap *bss; /* BSS that this device belongs to */

	union {
		struct ieee80211_if_ap ap;
		struct ieee80211_if_wds wds;
		struct ieee80211_if_vlan vlan;
		struct ieee80211_if_sta sta;
	} u;
	int channel_use;
	int channel_use_raw;
};

#define IEEE80211_DEV_TO_SUB_IF(dev) netdev_priv(dev)

enum {
	IEEE80211_RX_MSG	= 1,
	IEEE80211_TX_STATUS_MSG	= 2,
};

struct ieee80211_local {
	/* embed the driver visible part.
	 * don't cast (use the static inlines below), but we keep
	 * it first anyway so they become a no-op */
	struct ieee80211_hw hw;

	const struct ieee80211_ops *ops;

	/* List of registered struct ieee80211_hw_mode */
	struct list_head modes_list;

	struct net_device *mdev; /* wmaster# - "master" 802.11 device */
	struct net_device *apdev; /* wlan#ap - management frames (hostapd) */
	int open_count;
	int monitors;
	struct iw_statistics wstats;
	u8 wstats_flags;

	enum {
		IEEE80211_DEV_UNINITIALIZED = 0,
		IEEE80211_DEV_REGISTERED,
		IEEE80211_DEV_UNREGISTERED,
	} reg_state;

	/* Tasklet and skb queue to process calls from IRQ mode. All frames
	 * added to skb_queue will be processed, but frames in
	 * skb_queue_unreliable may be dropped if the total length of these
	 * queues increases over the limit. */
#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
	struct tasklet_struct tasklet;
	struct sk_buff_head skb_queue;
	struct sk_buff_head skb_queue_unreliable;

	/* Station data structures */
	spinlock_t sta_lock; /* mutex for STA data structures */
	int num_sta; /* number of stations in sta_list */
	struct list_head sta_list;
	struct list_head deleted_sta_list;
	struct sta_info *sta_hash[STA_HASH_SIZE];
	struct timer_list sta_cleanup;

	unsigned long state[NUM_TX_DATA_QUEUES];
	struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES];
	struct tasklet_struct tx_pending_tasklet;

	int mc_count;	/* total count of multicast entries in all interfaces */
	int iff_allmultis, iff_promiscs;
			/* number of interfaces with corresponding IFF_ flags */

	struct rate_control_ref *rate_ctrl;

	int next_mode; /* MODE_IEEE80211*
			* The mode preference for next channel change. This is
			* used to select .11g vs. .11b channels (or 4.9 GHz vs.
			* .11a) when the channel number is not unique. */

	/* Supported and basic rate filters for different modes. These are
	 * pointers to -1 terminated lists and rates in 100 kbps units. */
	int *supp_rates[NUM_IEEE80211_MODES];
	int *basic_rates[NUM_IEEE80211_MODES];

	int rts_threshold;
	int cts_protect_erp_frames;
	int fragmentation_threshold;
	int short_retry_limit; /* dot11ShortRetryLimit */
	int long_retry_limit; /* dot11LongRetryLimit */
	int short_preamble; /* use short preamble with IEEE 802.11b */

	struct crypto_blkcipher *wep_tx_tfm;
	struct crypto_blkcipher *wep_rx_tfm;
	u32 wep_iv;
	int key_tx_rx_threshold; /* number of times any key can be used in TX
				  * or RX before generating a rekey
				  * notification; 0 = notification disabled. */

	int bridge_packets; /* bridge packets between associated stations and
			     * deliver multicast frames both back to wireless
			     * media and to the local net stack */

	ieee80211_rx_handler *rx_pre_handlers;
	ieee80211_rx_handler *rx_handlers;
	ieee80211_tx_handler *tx_handlers;

	rwlock_t sub_if_lock; /* Protects sub_if_list. Cannot be taken under
			       * sta_bss_lock or sta_lock. */
	struct list_head sub_if_list;
	int sta_scanning;
	int scan_channel_idx;
	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
	unsigned long last_scan_completed;
	struct delayed_work scan_work;
	struct net_device *scan_dev;
	struct ieee80211_channel *oper_channel, *scan_channel;
	struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode;
	u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
	size_t scan_ssid_len;
	struct list_head sta_bss_list;
	struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
	spinlock_t sta_bss_lock;
#define IEEE80211_SCAN_MATCH_SSID BIT(0)
#define IEEE80211_SCAN_WPA_ONLY BIT(1)
#define IEEE80211_SCAN_EXTRA_INFO BIT(2)
	int scan_flags;

	/* SNMP counters */
	/* dot11CountersTable */
	u32 dot11TransmittedFragmentCount;
	u32 dot11MulticastTransmittedFrameCount;
	u32 dot11FailedCount;
	u32 dot11RetryCount;
	u32 dot11MultipleRetryCount;
	u32 dot11FrameDuplicateCount;
	u32 dot11ReceivedFragmentCount;
	u32 dot11MulticastReceivedFrameCount;
	u32 dot11TransmittedFrameCount;
	u32 dot11WEPUndecryptableCount;

#ifdef CONFIG_MAC80211_LEDS
	int tx_led_counter, rx_led_counter;
	struct led_trigger *tx_led, *rx_led;
	char tx_led_name[32], rx_led_name[32];
#endif

	u32 channel_use;
	u32 channel_use_raw;
	u32 stat_time;
	struct timer_list stat_timer;

	enum {
		STA_ANTENNA_SEL_AUTO = 0,
		STA_ANTENNA_SEL_SW_CTRL = 1,
		STA_ANTENNA_SEL_SW_CTRL_DEBUG = 2
	} sta_antenna_sel;

	int rate_ctrl_num_up, rate_ctrl_num_down;

#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
	/* TX/RX handler statistics */
	unsigned int tx_handlers_drop;
	unsigned int tx_handlers_queued;
	unsigned int tx_handlers_drop_unencrypted;
	unsigned int tx_handlers_drop_fragment;
	unsigned int tx_handlers_drop_wep;
	unsigned int tx_handlers_drop_not_assoc;
	unsigned int tx_handlers_drop_unauth_port;
	unsigned int rx_handlers_drop;
	unsigned int rx_handlers_queued;
	unsigned int rx_handlers_drop_nullfunc;
	unsigned int rx_handlers_drop_defrag;
	unsigned int rx_handlers_drop_short;
	unsigned int rx_handlers_drop_passive_scan;
	unsigned int tx_expand_skb_head;
	unsigned int tx_expand_skb_head_cloned;
	unsigned int rx_expand_skb_head;
	unsigned int rx_expand_skb_head2;
	unsigned int rx_handlers_fragments;
	unsigned int tx_status_drop;
	unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES];
	unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES];
#define I802_DEBUG_INC(c) (c)++
#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
#define I802_DEBUG_INC(c) do { } while (0)
#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */


	int default_wep_only; /* only default WEP keys are used with this
			       * interface; this is used to decide when hwaccel
			       * can be used with default keys */
	int total_ps_buffered; /* total number of all buffered unicast and
				* multicast packets for power saving stations
				*/
	int allow_broadcast_always; /* whether to allow TX of broadcast frames
				     * even when there are no associated STAs
				     */

	int wifi_wme_noack_test;
	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */

	unsigned int enabled_modes; /* bitfield of allowed modes;
				      * (1 << MODE_*) */
	unsigned int hw_modes; /* bitfield of supported hardware modes;
				* (1 << MODE_*) */

	int user_space_mlme;
};

static inline struct ieee80211_local *hw_to_local(
	struct ieee80211_hw *hw)
{
	return container_of(hw, struct ieee80211_local, hw);
}

static inline struct ieee80211_hw *local_to_hw(
	struct ieee80211_local *local)
{
	return &local->hw;
}

enum ieee80211_link_state_t {
	IEEE80211_LINK_STATE_XOFF = 0,
	IEEE80211_LINK_STATE_PENDING,
};

struct sta_attribute {
	struct attribute attr;
	ssize_t (*show)(const struct sta_info *, char *buf);
	ssize_t (*store)(struct sta_info *, const char *buf, size_t count);
};

static inline void __bss_tim_set(struct ieee80211_if_ap *bss, int aid)
{
	/*
	 * This format has ben mandated by the IEEE specifications,
	 * so this line may not be changed to use the __set_bit() format.
	 */
	bss->tim[(aid)/8] |= 1<<((aid) % 8);
}

static inline void bss_tim_set(struct ieee80211_local *local,
			       struct ieee80211_if_ap *bss, int aid)
{
	spin_lock_bh(&local->sta_lock);
	__bss_tim_set(bss, aid);
	spin_unlock_bh(&local->sta_lock);
}

static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, int aid)
{
	/*
	 * This format has ben mandated by the IEEE specifications,
	 * so this line may not be changed to use the __clear_bit() format.
	 */
	bss->tim[(aid)/8] &= !(1<<((aid) % 8));
}

static inline void bss_tim_clear(struct ieee80211_local *local,
				 struct ieee80211_if_ap *bss, int aid)
{
	spin_lock_bh(&local->sta_lock);
	__bss_tim_clear(bss, aid);
	spin_unlock_bh(&local->sta_lock);
}

/**
 * ieee80211_is_erp_rate - Check if a rate is an ERP rate
 * @phymode: The PHY-mode for this rate (MODE_IEEE80211...)
 * @rate: Transmission rate to check, in 100 kbps
 *
 * Check if a given rate is an Extended Rate PHY (ERP) rate.
 */
static inline int ieee80211_is_erp_rate(int phymode, int rate)
{
	if (phymode == MODE_IEEE80211G) {
		if (rate != 10 && rate != 20 &&
		    rate != 55 && rate != 110)
			return 1;
	}
	return 0;
}

/* ieee80211.c */
int ieee80211_hw_config(struct ieee80211_local *local);
int ieee80211_if_config(struct net_device *dev);
int ieee80211_if_config_beacon(struct net_device *dev);
struct ieee80211_key_conf *
ieee80211_key_data2conf(struct ieee80211_local *local,
			const struct ieee80211_key *data);
struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
					  int idx, size_t key_len, gfp_t flags);
void ieee80211_key_free(struct ieee80211_key *key);
void ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
		       struct ieee80211_rx_status *status, u32 msg_type);
void ieee80211_prepare_rates(struct ieee80211_local *local,
			     struct ieee80211_hw_mode *mode);
void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx);
int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
void ieee80211_if_setup(struct net_device *dev);
void ieee80211_if_mgmt_setup(struct net_device *dev);
int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
				 const char *name);
struct net_device_stats *ieee80211_dev_stats(struct net_device *dev);

/* ieee80211_ioctl.c */
extern const struct iw_handler_def ieee80211_iw_handler_def;

void ieee80211_update_default_wep_only(struct ieee80211_local *local);


/* Least common multiple of the used rates (in 100 kbps). This is used to
 * calculate rate_inv values for each rate so that only integers are needed. */
#define CHAN_UTIL_RATE_LCM 95040
/* 1 usec is 1/8 * (95040/10) = 1188 */
#define CHAN_UTIL_PER_USEC 1188
/* Amount of bits to shift the result right to scale the total utilization
 * to values that will not wrap around 32-bit integers. */
#define CHAN_UTIL_SHIFT 9
/* Theoretical maximum of channel utilization counter in 10 ms (stat_time=1):
 * (CHAN_UTIL_PER_USEC * 10000) >> CHAN_UTIL_SHIFT = 23203. So dividing the
 * raw value with about 23 should give utilization in 10th of a percentage
 * (1/1000). However, utilization is only estimated and not all intervals
 * between frames etc. are calculated. 18 seems to give numbers that are closer
 * to the real maximum. */
#define CHAN_UTIL_PER_10MS 18
#define CHAN_UTIL_HDR_LONG (202 * CHAN_UTIL_PER_USEC)
#define CHAN_UTIL_HDR_SHORT (40 * CHAN_UTIL_PER_USEC)


/* ieee80211_ioctl.c */
int ieee80211_set_compression(struct ieee80211_local *local,
			      struct net_device *dev, struct sta_info *sta);
int ieee80211_init_client(struct net_device *dev);
int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq);
/* ieee80211_sta.c */
void ieee80211_sta_timer(unsigned long data);
void ieee80211_sta_work(struct work_struct *work);
void ieee80211_sta_scan_work(struct work_struct *work);
void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
			   struct ieee80211_rx_status *rx_status);
int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len);
int ieee80211_sta_get_ssid(struct net_device *dev, char *ssid, size_t *len);
int ieee80211_sta_set_bssid(struct net_device *dev, u8 *bssid);
int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len);
void ieee80211_sta_req_auth(struct net_device *dev,
			    struct ieee80211_if_sta *ifsta);
int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len);
void ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb,
			   struct ieee80211_rx_status *rx_status);
void ieee80211_rx_bss_list_init(struct net_device *dev);
void ieee80211_rx_bss_list_deinit(struct net_device *dev);
int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len);
struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev,
					 struct sk_buff *skb, u8 *bssid,
					 u8 *addr);
int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);

/* ieee80211_iface.c */
int ieee80211_if_add(struct net_device *dev, const char *name,
		     struct net_device **new_dev, int type);
void ieee80211_if_set_type(struct net_device *dev, int type);
void ieee80211_if_reinit(struct net_device *dev);
void __ieee80211_if_del(struct ieee80211_local *local,
			struct ieee80211_sub_if_data *sdata);
int ieee80211_if_remove(struct net_device *dev, const char *name, int id);
void ieee80211_if_free(struct net_device *dev);
void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata);
int ieee80211_if_add_mgmt(struct ieee80211_local *local);
void ieee80211_if_del_mgmt(struct ieee80211_local *local);

/* for wiphy privid */
extern void *mac80211_wiphy_privid;

#endif /* IEEE80211_I_H */