ieee80211_i.h 32.7 KB
Newer Older
1
2
3
4
/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
5
 * Copyright 2007-2008	Johannes Berg <johannes@sipsolutions.net>
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 *
 * 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>
25
#include <linux/etherdevice.h>
26
#include <net/cfg80211.h>
27
#include <net/wireless.h>
28
#include <net/iw_handler.h>
29
#include <net/mac80211.h>
Johannes Berg's avatar
Johannes Berg committed
30
#include "key.h"
31
32
#include "sta_info.h"

33
struct ieee80211_local;
34
35
36
37
38
39
40
41
42
43
44
45

/* 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
46
#define IEEE80211_ENCRYPT_TAILROOM 18
47
48
49
50
51
52
53

/* 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

54
55
56
57
58
59
/*
 * Time after which we ignore scan results and no longer report/use
 * them in any way.
 */
#define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ)

60
61
#define TU_TO_EXP_TIME(x)	(jiffies + usecs_to_jiffies((x) * 1024))

62
63
64
65
66
67
68
69
70
71
72
73
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 */
};


74
struct ieee80211_bss {
75
76
	/* Yes, this is a hack */
	struct cfg80211_bss cbss;
77

78
79
	/* don't want to look up all the time */
	size_t ssid_len;
80
	u8 ssid[IEEE80211_MAX_SSID_LEN];
81

82
	u8 dtim_period;
83

84
	bool wmm_used;
85
86
87

	unsigned long last_probe_resp;

88
89
90
#ifdef CONFIG_MAC80211_MESH
	u8 *mesh_id;
	size_t mesh_id_len;
91
	u8 *mesh_cfg;
Johannes Berg's avatar
Johannes Berg committed
92
#endif
93

94
95
96
97
#define IEEE80211_MAX_SUPP_RATES 32
	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
	size_t supp_rates_len;

98
99
	/*
	 * During assocation, we save an ERP value from a probe response so
100
101
	 * that we can feed ERP info to the driver when handling the
	 * association completes. these fields probably won't be up-to-date
102
103
104
	 * otherwise, you probably don't want to use them.
	 */
	bool has_erp_value;
105
	u8 erp_value;
106
107
};

108
static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
Johannes Berg's avatar
Johannes Berg committed
109
110
111
112
113
114
115
{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_cfg;
#endif
	return NULL;
}

116
static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
Johannes Berg's avatar
Johannes Berg committed
117
118
119
120
121
122
123
{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_id;
#endif
	return NULL;
}

124
static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
Johannes Berg's avatar
Johannes Berg committed
125
126
127
128
129
130
131
{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_id_len;
#endif
	return 0;
}

132

133
134
135
136
137
typedef unsigned __bitwise__ ieee80211_tx_result;
#define TX_CONTINUE	((__force ieee80211_tx_result) 0u)
#define TX_DROP		((__force ieee80211_tx_result) 1u)
#define TX_QUEUED	((__force ieee80211_tx_result) 2u)

138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
#define IEEE80211_TX_FRAGMENTED		BIT(0)
#define IEEE80211_TX_UNICAST		BIT(1)
#define IEEE80211_TX_PS_BUFFERED	BIT(2)

struct ieee80211_tx_data {
	struct sk_buff *skb;
	struct net_device *dev;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	struct ieee80211_key *key;

	struct ieee80211_channel *channel;

	/* Extra fragments (in addition to the first fragment
	 * in skb) */
	struct sk_buff **extra_frag;
155
156
	int num_extra_frag;

157
	u16 ethertype;
158
	unsigned int flags;
159
160
161
};


162
typedef unsigned __bitwise__ ieee80211_rx_result;
Johannes Berg's avatar
Johannes Berg committed
163
164
165
166
#define RX_CONTINUE		((__force ieee80211_rx_result) 0u)
#define RX_DROP_UNUSABLE	((__force ieee80211_rx_result) 1u)
#define RX_DROP_MONITOR		((__force ieee80211_rx_result) 2u)
#define RX_QUEUED		((__force ieee80211_rx_result) 3u)
167

168
#define IEEE80211_RX_IN_SCAN		BIT(0)
169
/* frame is destined to interface currently processed (incl. multicast frames) */
170
171
172
173
174
175
#define IEEE80211_RX_RA_MATCH		BIT(1)
#define IEEE80211_RX_AMSDU		BIT(2)
#define IEEE80211_RX_CMNTR_REPORTED	BIT(3)
#define IEEE80211_RX_FRAGMENTED		BIT(4)

struct ieee80211_rx_data {
176
177
178
179
180
181
	struct sk_buff *skb;
	struct net_device *dev;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	struct ieee80211_key *key;
182
183
	struct ieee80211_rx_status *status;
	struct ieee80211_rate *rate;
184
185

	unsigned int flags;
186
187
188
189
	int sent_ps_buffered;
	int queue;
	u32 tkip_iv32;
	u16 tkip_iv16;
190
191
192
193
194
};

struct ieee80211_tx_stored_packet {
	struct sk_buff *skb;
	struct sk_buff **extra_frag;
195
	int num_extra_frag;
196
197
};

198
199
200
201
202
203
struct beacon_data {
	u8 *head, *tail;
	int head_len, tail_len;
	int dtim_period;
};

204
struct ieee80211_if_ap {
205
	struct beacon_data *beacon;
206

207
208
	struct list_head vlans;

209
210
	/* yes, this looks ugly, but guarantees that we can later use
	 * bitmap_empty :)
211
	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
212
213
	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
	struct sk_buff_head ps_bc_buf;
214
	atomic_t num_sta_ps; /* number of stations in PS mode */
215
	int dtim_count;
216
217
218
219
};

struct ieee80211_if_wds {
	struct sta_info *sta;
220
	u8 remote_addr[ETH_ALEN];
221
222
223
};

struct ieee80211_if_vlan {
224
	struct list_head list;
225
226
};

227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
struct mesh_stats {
	__u32 fwded_frames;		/* Mesh forwarded frames */
	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
	atomic_t estab_plinks;
};

#define PREQ_Q_F_START		0x1
#define PREQ_Q_F_REFRESH	0x2
struct mesh_preq_queue {
	struct list_head list;
	u8 dst[ETH_ALEN];
	u8 flags;
};

242
/* flags used in struct ieee80211_if_managed.flags */
243
244
245
246
247
248
249
250
251
252
253
254
#define IEEE80211_STA_SSID_SET		BIT(0)
#define IEEE80211_STA_BSSID_SET		BIT(1)
#define IEEE80211_STA_PREV_BSSID_SET	BIT(2)
#define IEEE80211_STA_AUTHENTICATED	BIT(3)
#define IEEE80211_STA_ASSOCIATED	BIT(4)
#define IEEE80211_STA_PROBEREQ_POLL	BIT(5)
#define IEEE80211_STA_CREATE_IBSS	BIT(6)
#define IEEE80211_STA_MIXED_CELL	BIT(7)
#define IEEE80211_STA_WMM_ENABLED	BIT(8)
#define IEEE80211_STA_AUTO_SSID_SEL	BIT(10)
#define IEEE80211_STA_AUTO_BSSID_SEL	BIT(11)
#define IEEE80211_STA_AUTO_CHANNEL_SEL	BIT(12)
255
#define IEEE80211_STA_PRIVACY_INVOKED	BIT(13)
256
#define IEEE80211_STA_TKIP_WEP_USED	BIT(14)
Sujith's avatar
Sujith committed
257
#define IEEE80211_STA_CSA_RECEIVED	BIT(15)
258
#define IEEE80211_STA_MFP_ENABLED	BIT(16)
259
/* flags for MLME request */
260
#define IEEE80211_STA_REQ_SCAN 0
261
262
263
#define IEEE80211_STA_REQ_DIRECT_PROBE 1
#define IEEE80211_STA_REQ_AUTH 2
#define IEEE80211_STA_REQ_RUN  3
264
265
266
267
268
269

/* bitfield of allowed auth algs */
#define IEEE80211_AUTH_ALG_OPEN BIT(0)
#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
#define IEEE80211_AUTH_ALG_LEAP BIT(2)

270
struct ieee80211_if_managed {
271
	struct timer_list timer;
Sujith's avatar
Sujith committed
272
	struct timer_list chswitch_timer;
273
	struct work_struct work;
Sujith's avatar
Sujith committed
274
	struct work_struct chswitch_work;
275

276
	u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
277

278
	u8 ssid[IEEE80211_MAX_SSID_LEN];
279
	size_t ssid_len;
280
281
282
283
284
285
286
287
288

	enum {
		IEEE80211_STA_MLME_DISABLED,
		IEEE80211_STA_MLME_DIRECT_PROBE,
		IEEE80211_STA_MLME_AUTHENTICATE,
		IEEE80211_STA_MLME_ASSOCIATE,
		IEEE80211_STA_MLME_ASSOCIATED,
	} state;

289
290
291
292
293
294
295
296
297
	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;

298
299
	struct sk_buff_head skb_queue;

300
	int assoc_scan_tries; /* number of scans done pre-association */
301
	int direct_probe_tries; /* retries for direct probes */
302
303
	int auth_tries; /* retries for auth req */
	int assoc_tries; /* retries for assoc req */
304

305
306
307
308
	unsigned long request;

	unsigned long last_probe;

309
	unsigned int flags;
310
311
312
313
314

	unsigned int auth_algs; /* bitfield of allowed auth algs */
	int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
	int auth_transaction;

315
316
317
318
319
320
	enum {
		IEEE80211_MFP_DISABLED,
		IEEE80211_MFP_OPTIONAL,
		IEEE80211_MFP_REQUIRED
	} mfp; /* management frame protection */

321
	int wmm_last_param_set;
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337

	/* Extra IE data for management frames */
	u8 *ie_probereq;
	size_t ie_probereq_len;
	u8 *ie_proberesp;
	size_t ie_proberesp_len;
	u8 *ie_auth;
	size_t ie_auth_len;
	u8 *ie_assocreq;
	size_t ie_assocreq_len;
	u8 *ie_reassocreq;
	size_t ie_reassocreq_len;
	u8 *ie_deauth;
	size_t ie_deauth_len;
	u8 *ie_disassoc;
	size_t ie_disassoc_len;
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
enum ieee80211_ibss_flags {
	IEEE80211_IBSS_AUTO_CHANNEL_SEL		= BIT(0),
	IEEE80211_IBSS_AUTO_BSSID_SEL		= BIT(1),
	IEEE80211_IBSS_BSSID_SET		= BIT(2),
	IEEE80211_IBSS_PREV_BSSID_SET		= BIT(3),
	IEEE80211_IBSS_SSID_SET			= BIT(4),
};

enum ieee80211_ibss_request {
	IEEE80211_IBSS_REQ_RUN	= 0,
};

struct ieee80211_if_ibss {
	struct timer_list timer;
	struct work_struct work;

	struct sk_buff_head skb_queue;

	u8 ssid[IEEE80211_MAX_SSID_LEN];
	u8 ssid_len;

	u32 flags;

	u8 bssid[ETH_ALEN];

	unsigned long request;

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

	enum {
		IEEE80211_IBSS_MLME_SEARCH,
		IEEE80211_IBSS_MLME_JOINED,
	} state;
};

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
struct ieee80211_if_mesh {
	struct work_struct work;
	struct timer_list housekeeping_timer;
	struct timer_list mesh_path_timer;
	struct sk_buff_head skb_queue;

	bool housekeeping;

	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
	size_t mesh_id_len;
	/* Active Path Selection Protocol Identifier */
	u8 mesh_pp_id[4];
	/* Active Path Selection Metric Identifier */
	u8 mesh_pm_id[4];
	/* Congestion Control Mode Identifier */
	u8 mesh_cc_id[4];
	/* Local mesh Destination Sequence Number */
	u32 dsn;
	/* Last used PREQ ID */
	u32 preq_id;
	atomic_t mpaths;
	/* Timestamp of last DSN update */
	unsigned long last_dsn_update;
	/* Timestamp of last DSN sent */
	unsigned long last_preq;
	struct mesh_rmc *rmc;
	spinlock_t mesh_preq_queue_lock;
	struct mesh_preq_queue preq_queue;
	int preq_queue_len;
	struct mesh_stats mshstats;
	struct mesh_config mshcfg;
	u32 mesh_seqnum;
	bool accepting_plinks;
};
Johannes Berg's avatar
Johannes Berg committed
410
411

#ifdef CONFIG_MAC80211_MESH
412
413
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
	do { (msh)->mshstats.name++; } while (0)
Johannes Berg's avatar
Johannes Berg committed
414
#else
415
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
Johannes Berg's avatar
Johannes Berg committed
416
417
	do { } while (0)
#endif
418

419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
/**
 * enum ieee80211_sub_if_data_flags - virtual interface flags
 *
 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
 * @IEEE80211_SDATA_PROMISC: interface is promisc
 * @IEEE80211_SDATA_USERSPACE_MLME: userspace MLME is active
 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
 *	associated stations and deliver multicast frames both
 *	back to wireless media and to the local net stack.
 */
enum ieee80211_sub_if_data_flags {
	IEEE80211_SDATA_ALLMULTI		= BIT(0),
	IEEE80211_SDATA_PROMISC			= BIT(1),
	IEEE80211_SDATA_USERSPACE_MLME		= BIT(2),
	IEEE80211_SDATA_OPERATING_GMODE		= BIT(3),
	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(4),
};

438
439
440
441
442
struct ieee80211_sub_if_data {
	struct list_head list;

	struct wireless_dev wdev;

443
444
445
	/* keys */
	struct list_head key_list;

446
447
448
	struct net_device *dev;
	struct ieee80211_local *local;

449
	unsigned int flags;
450

451
452
453
454
455
456
457
	int drop_unencrypted;

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

#define NUM_DEFAULT_KEYS 4
458
459
#define NUM_DEFAULT_MGMT_KEYS 2
	struct ieee80211_key *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
460
	struct ieee80211_key *default_key;
461
	struct ieee80211_key *default_mgmt_key;
462

463
464
	u16 sequence_number;

465
	/*
466
467
468
	 * AP this belongs to: self in AP mode and
	 * corresponding AP in VLAN mode, NULL for
	 * all others (might be needed later in IBSS)
469
	 */
470
471
472
473
	struct ieee80211_if_ap *bss;

	int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
	int max_ratectrl_rateidx; /* max TX rateidx for rate control */
474
475
476
477
478

	union {
		struct ieee80211_if_ap ap;
		struct ieee80211_if_wds wds;
		struct ieee80211_if_vlan vlan;
479
480
		struct ieee80211_if_managed mgd;
		struct ieee80211_if_ibss ibss;
481
482
483
#ifdef CONFIG_MAC80211_MESH
		struct ieee80211_if_mesh mesh;
#endif
484
		u32 mntr_flags;
485
	} u;
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505

#ifdef CONFIG_MAC80211_DEBUGFS
	struct dentry *debugfsdir;
	union {
		struct {
			struct dentry *drop_unencrypted;
			struct dentry *state;
			struct dentry *bssid;
			struct dentry *prev_bssid;
			struct dentry *ssid_len;
			struct dentry *aid;
			struct dentry *ap_capab;
			struct dentry *capab;
			struct dentry *extra_ie_len;
			struct dentry *auth_tries;
			struct dentry *assoc_tries;
			struct dentry *auth_algs;
			struct dentry *auth_alg;
			struct dentry *auth_transaction;
			struct dentry *flags;
506
507
			struct dentry *force_unicast_rateidx;
			struct dentry *max_ratectrl_rateidx;
508
509
510
511
512
513
514
515
516
517
518
519
		} sta;
		struct {
			struct dentry *drop_unencrypted;
			struct dentry *num_sta_ps;
			struct dentry *dtim_count;
			struct dentry *force_unicast_rateidx;
			struct dentry *max_ratectrl_rateidx;
			struct dentry *num_buffered_multicast;
		} ap;
		struct {
			struct dentry *drop_unencrypted;
			struct dentry *peer;
520
521
			struct dentry *force_unicast_rateidx;
			struct dentry *max_ratectrl_rateidx;
522
523
524
		} wds;
		struct {
			struct dentry *drop_unencrypted;
525
526
			struct dentry *force_unicast_rateidx;
			struct dentry *max_ratectrl_rateidx;
527
528
529
530
531
		} vlan;
		struct {
			struct dentry *mode;
		} monitor;
	} debugfs;
532
533
	struct {
		struct dentry *default_key;
534
		struct dentry *default_mgmt_key;
535
	} common_debugfs;
536
537
538
539
540
541
542
543

#ifdef CONFIG_MAC80211_MESH
	struct dentry *mesh_stats_dir;
	struct {
		struct dentry *fwded_frames;
		struct dentry *dropped_frames_ttl;
		struct dentry *dropped_frames_no_route;
		struct dentry *estab_plinks;
Johannes Berg's avatar
Johannes Berg committed
544
		struct timer_list mesh_path_timer;
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
	} mesh_stats;

	struct dentry *mesh_config_dir;
	struct {
		struct dentry *dot11MeshRetryTimeout;
		struct dentry *dot11MeshConfirmTimeout;
		struct dentry *dot11MeshHoldingTimeout;
		struct dentry *dot11MeshMaxRetries;
		struct dentry *dot11MeshTTL;
		struct dentry *auto_open_plinks;
		struct dentry *dot11MeshMaxPeerLinks;
		struct dentry *dot11MeshHWMPactivePathTimeout;
		struct dentry *dot11MeshHWMPpreqMinInterval;
		struct dentry *dot11MeshHWMPnetDiameterTraversalTime;
		struct dentry *dot11MeshHWMPmaxPREQretries;
		struct dentry *path_refresh_time;
		struct dentry *min_discovery_timeout;
	} mesh_config;
#endif

565
#endif
566
567
	/* must be last, dynamically sized area in this! */
	struct ieee80211_vif vif;
568
569
};

570
571
572
573
574
575
static inline
struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
{
	return container_of(p, struct ieee80211_sub_if_data, vif);
}

576
577
578
579
580
581
582
583
584
585
586
587
588
static inline void
ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
			    u8 mesh_id_len, u8 *mesh_id)
{
#ifdef CONFIG_MAC80211_MESH
	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
	ifmsh->mesh_id_len = mesh_id_len;
	memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
#else
	WARN_ON(1);
#endif
}

589
590
591
enum {
	IEEE80211_RX_MSG	= 1,
	IEEE80211_TX_STATUS_MSG	= 2,
592
593
	IEEE80211_DELBA_MSG	= 3,
	IEEE80211_ADDBA_MSG	= 4,
594
595
};

596
597
enum queue_stop_reason {
	IEEE80211_QUEUE_STOP_REASON_DRIVER,
598
	IEEE80211_QUEUE_STOP_REASON_PS,
599
600
	IEEE80211_QUEUE_STOP_REASON_CSA,
	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
601
602
};

603
604
605
606
struct ieee80211_master_priv {
	struct ieee80211_local *local;
};

607
608
609
610
611
612
613
614
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;

615
616
617
618
619
620
621
	/* AC queue corresponding to each AMPDU queue */
	s8 ampdu_ac_queue[IEEE80211_MAX_AMPDU_QUEUES];
	unsigned int amdpu_ac_stop_refcnt[IEEE80211_MAX_AMPDU_QUEUES];

	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES +
					 IEEE80211_MAX_AMPDU_QUEUES];
	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
622
	spinlock_t queue_stop_reason_lock;
623

624
625
	struct net_device *mdev; /* wmaster# - "master" 802.11 device */
	int open_count;
626
	int monitors, cooked_mntrs;
627
628
	/* number of interfaces with corresponding FIF_ flags */
	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss;
629
	unsigned int filter_flags; /* FIF_* */
630
	struct iw_statistics wstats;
631
	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
632
	int tx_headroom; /* required headroom for hardware/radiotap */
633
634
635
636
637
638
639
640
641
642

	/* 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;

643
644
645
646
	/* Station data */
	/*
	 * The lock only protects the list, hash, timer and counter
	 * against manipulation, reads are done in RCU. Additionally,
647
	 * the lock protects each BSS's TIM bitmap.
648
649
650
	 */
	spinlock_t sta_lock;
	unsigned long num_sta;
651
	struct list_head sta_list;
652
653
	struct list_head sta_flush_list;
	struct work_struct sta_flush_work;
654
655
656
	struct sta_info *sta_hash[STA_HASH_SIZE];
	struct timer_list sta_cleanup;

657
	unsigned long queues_pending[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
658
	unsigned long queues_pending_run[BITS_TO_LONGS(IEEE80211_MAX_QUEUES)];
659
	struct ieee80211_tx_stored_packet pending_packet[IEEE80211_MAX_QUEUES];
660
661
	struct tasklet_struct tx_pending_tasklet;

662
663
	/* number of interfaces with corresponding IFF_ flags */
	atomic_t iff_allmultis, iff_promiscs;
664
665
666
667
668
669
670
671
672
673

	struct rate_control_ref *rate_ctrl;

	int rts_threshold;
	int fragmentation_threshold;

	struct crypto_blkcipher *wep_tx_tfm;
	struct crypto_blkcipher *wep_rx_tfm;
	u32 wep_iv;

674
	/* see iface.c */
675
	struct list_head interfaces;
676
	struct mutex iflist_mtx;
677

678
679
680
681
682
683
684
	/*
	 * Key lock, protects sdata's key_list and sta_info's
	 * key pointers (write access, they're RCU.)
	 */
	spinlock_t key_lock;


685
686
	/* Scanning and BSS list */
	bool sw_scanning, hw_scanning;
687
688
689
690
	struct cfg80211_ssid scan_ssid;
	struct cfg80211_scan_request int_scan_req;
	struct cfg80211_scan_request *scan_req;
	struct ieee80211_channel *scan_channel;
691
	int scan_channel_idx;
692

693
694
695
	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
	unsigned long last_scan_completed;
	struct delayed_work scan_work;
696
	struct ieee80211_sub_if_data *scan_sdata;
Sujith's avatar
Sujith committed
697
	enum nl80211_channel_type oper_channel_type;
698
	struct ieee80211_channel *oper_channel, *csa_channel;
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713

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

#ifdef CONFIG_MAC80211_LEDS
	int tx_led_counter, rx_led_counter;
714
715
716
	struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
	char tx_led_name[32], rx_led_name[32],
	     assoc_led_name[32], radio_led_name[32];
717
718
#endif

719
720
721
722
#ifdef CONFIG_MAC80211_DEBUGFS
	struct work_struct sta_debugfs_add;
#endif

723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
#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;
#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 total_ps_buffered; /* total number of all buffered unicast and
				* multicast packets for power saving stations
				*/
	int wifi_wme_noack_test;
	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
755

756
	bool powersave;
757
	bool pspolling;
758
759
760
	struct work_struct dynamic_ps_enable_work;
	struct work_struct dynamic_ps_disable_work;
	struct timer_list dynamic_ps_timer;
761

762
	int user_power_level; /* in dBm */
763
	int power_constr_level; /* in dBm */
764

765
766
#ifdef CONFIG_MAC80211_DEBUGFS
	struct local_debugfsdentries {
767
768
		struct dentry *rcdir;
		struct dentry *rcname;
769
770
771
772
773
774
775
		struct dentry *frequency;
		struct dentry *rts_threshold;
		struct dentry *fragmentation_threshold;
		struct dentry *short_retry_limit;
		struct dentry *long_retry_limit;
		struct dentry *total_ps_buffered;
		struct dentry *wep_iv;
776
		struct dentry *tsf;
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
		struct dentry *statistics;
		struct local_debugfsdentries_statsdentries {
			struct dentry *transmitted_fragment_count;
			struct dentry *multicast_transmitted_frame_count;
			struct dentry *failed_count;
			struct dentry *retry_count;
			struct dentry *multiple_retry_count;
			struct dentry *frame_duplicate_count;
			struct dentry *received_fragment_count;
			struct dentry *multicast_received_frame_count;
			struct dentry *transmitted_frame_count;
			struct dentry *wep_undecryptable_count;
			struct dentry *num_scans;
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
			struct dentry *tx_handlers_drop;
			struct dentry *tx_handlers_queued;
			struct dentry *tx_handlers_drop_unencrypted;
			struct dentry *tx_handlers_drop_fragment;
			struct dentry *tx_handlers_drop_wep;
			struct dentry *tx_handlers_drop_not_assoc;
			struct dentry *tx_handlers_drop_unauth_port;
			struct dentry *rx_handlers_drop;
			struct dentry *rx_handlers_queued;
			struct dentry *rx_handlers_drop_nullfunc;
			struct dentry *rx_handlers_drop_defrag;
			struct dentry *rx_handlers_drop_short;
			struct dentry *rx_handlers_drop_passive_scan;
			struct dentry *tx_expand_skb_head;
			struct dentry *tx_expand_skb_head_cloned;
			struct dentry *rx_expand_skb_head;
			struct dentry *rx_expand_skb_head2;
			struct dentry *rx_handlers_fragments;
			struct dentry *tx_status_drop;
#endif
			struct dentry *dot11ACKFailureCount;
			struct dentry *dot11RTSFailureCount;
			struct dentry *dot11FCSErrorCount;
			struct dentry *dot11RTSSuccessCount;
		} stats;
		struct dentry *stations;
		struct dentry *keys;
	} debugfs;
#endif
820
821
};

822
823
824
825
826
827
828
829
830
831
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);

	BUG_ON(!local || local->mdev == dev);

	return netdev_priv(dev);
}

832
833
834
835
836
837
/* this struct represents 802.11n's RA/TID combination */
struct ieee80211_ra_tid {
	u8 ra[ETH_ALEN];
	u16 tid;
};

838
839
/* Parsed Information Elements */
struct ieee802_11_elems {
840
841
842
	u8 *ie_start;
	size_t total_len;

843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
	/* pointers to IEs */
	u8 *ssid;
	u8 *supp_rates;
	u8 *fh_params;
	u8 *ds_params;
	u8 *cf_params;
	u8 *tim;
	u8 *ibss_params;
	u8 *challenge;
	u8 *wpa;
	u8 *rsn;
	u8 *erp_info;
	u8 *ext_supp_rates;
	u8 *wmm_info;
	u8 *wmm_param;
858
	struct ieee80211_ht_cap *ht_cap_elem;
859
	struct ieee80211_ht_info *ht_info_elem;
860
861
862
863
864
865
	u8 *mesh_config;
	u8 *mesh_id;
	u8 *peer_link;
	u8 *preq;
	u8 *prep;
	u8 *perr;
866
867
868
869
	u8 *ch_switch_elem;
	u8 *country_elem;
	u8 *pwr_constr_elem;
	u8 *quiet_elem; 	/* first quite element */
870
	u8 *timeout_int;
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892

	/* length of them, respectively */
	u8 ssid_len;
	u8 supp_rates_len;
	u8 fh_params_len;
	u8 ds_params_len;
	u8 cf_params_len;
	u8 tim_len;
	u8 ibss_params_len;
	u8 challenge_len;
	u8 wpa_len;
	u8 rsn_len;
	u8 erp_info_len;
	u8 ext_supp_rates_len;
	u8 wmm_info_len;
	u8 wmm_param_len;
	u8 mesh_config_len;
	u8 mesh_id_len;
	u8 peer_link_len;
	u8 preq_len;
	u8 prep_len;
	u8 perr_len;
893
894
895
896
897
	u8 ch_switch_elem_len;
	u8 country_elem_len;
	u8 pwr_constr_elem_len;
	u8 quiet_elem_len;
	u8 num_of_quiet_elem;	/* can be more the one */
898
	u8 timeout_int_len;
899
900
};

901
902
903
904
905
906
907
908
909
910
911
912
913
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;
}


914
915
916
917
918
919
920
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
	return compare_ether_addr(raddr, addr) == 0 ||
	       is_broadcast_ether_addr(raddr);
}


921
int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
922
int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
923
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
924
925
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
				      u32 changed);
926
void ieee80211_configure_filter(struct ieee80211_local *local);
927
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
928

929
/* wireless extensions */
930
extern const struct iw_handler_def ieee80211_iw_handler_def;
931

932
/* STA code */
933
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
934
935
936
ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
					  struct sk_buff *skb,
					  struct ieee80211_rx_status *rx_status);
937
int ieee80211_sta_commit(struct ieee80211_sub_if_data *sdata);
938
939
940
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
941
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata);
942
943
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
944
945
void ieee80211_send_pspoll(struct ieee80211_local *local,
			   struct ieee80211_sub_if_data *sdata);
946

947
/* IBSS code */
948
int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
949
950
951
952
953
954
955
956
957
958
959
int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result
ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
		       struct ieee80211_rx_status *rx_status);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
					u8 *bssid, u8 *addr, u32 supp_rates);

960
/* scan/BSS handling */
961
void ieee80211_scan_work(struct work_struct *work);
962
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
963
			   struct cfg80211_scan_request *req);
964
965
966
967
968
969
970
971
972
int ieee80211_scan_results(struct ieee80211_local *local,
			   struct iw_request_info *info,
			   char *buf, size_t len);
ieee80211_rx_result
ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata,
		  struct sk_buff *skb,
		  struct ieee80211_rx_status *rx_status);
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata,
			       char *ie, size_t len);
973

974
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
975
void ieee80211_scan_failed(struct ieee80211_local *local);
976
int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
977
			 struct cfg80211_scan_request *req);
978
struct ieee80211_bss *
979
980
981
982
983
ieee80211_bss_info_update(struct ieee80211_local *local,
			  struct ieee80211_rx_status *rx_status,
			  struct ieee80211_mgmt *mgmt,
			  size_t len,
			  struct ieee802_11_elems *elems,
984
985
			  struct ieee80211_channel *channel,
			  bool beacon);
986
struct ieee80211_bss *
987
988
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
		     u8 *ssid, u8 ssid_len);
989
void ieee80211_rx_bss_put(struct ieee80211_local *local,
990
			  struct ieee80211_bss *bss);
991
992
void ieee80211_rx_bss_remove(struct ieee80211_sub_if_data *sdata, u8 *bssid,
			     int freq, u8 *ssid, u8 ssid_len);
993

994
995
/* interface handling */
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
996
		     struct net_device **new_dev, enum nl80211_iftype type,
997
		     struct vif_params *params);
998
int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
999
			     enum nl80211_iftype type);
1000
void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1001
void ieee80211_remove_interfaces(struct ieee80211_local *local);
1002

1003
1004
1005
1006
1007
1008
1009
/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
int ieee80211_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);

1010
/* HT */
Johannes Berg's avatar
Johannes Berg committed
1011
1012
void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
				       struct ieee80211_ht_cap *ht_cap_ie,
1013
				       struct ieee80211_sta_ht_cap *ht_cap);
Johannes Berg's avatar
Johannes Berg committed
1014
1015
1016
u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
			struct ieee80211_ht_info *hti,
			u16 ap_ht_cap_flags);
1017
void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
Johannes Berg's avatar
Johannes Berg committed
1018
1019
1020
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
			  const u8 *da, u16 tid,
			  u16 initiator, u16 reason_code);
1021
1022
1023

void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
				u16 tid, u16 initiator, u16 reason);
1024
1025
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
				    u16 initiator, u16 reason);
1026
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
			     struct sta_info *sta,
			     struct ieee80211_mgmt *mgmt, size_t len);
void ieee80211_process_addba_resp(struct ieee80211_local *local,
				  struct sta_info *sta,
				  struct ieee80211_mgmt *mgmt,
				  size_t len);
void ieee80211_process_addba_request(struct ieee80211_local *local,
				     struct sta_info *sta,
				     struct ieee80211_mgmt *mgmt,
				     size_t len);

1039
1040
1041
int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
				   enum ieee80211_back_parties initiator);

1042
1043
1044
1045
/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211_mgmt *mgmt,
				       size_t len);
Sujith's avatar
Sujith committed
1046
1047
1048
1049
1050
void ieee80211_chswitch_timer(unsigned long data);
void ieee80211_chswitch_work(struct work_struct *work);
void ieee80211_process_chanswitch(struct ieee80211_sub_if_data *sdata,
				  struct ieee80211_channel_sw_ie *sw_elem,
				  struct ieee80211_bss *bss);
1051
1052
1053
void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
				 u16 capab_info, u8 *pwr_constr_elem,
				 u8 pwr_constr_elem_len);
1054

1055
1056
1057
1058
/* Suspend/resume */
int __ieee80211_suspend(struct ieee80211_hw *hw);
int __ieee80211_resume(struct ieee80211_hw *hw);

Johannes Berg's avatar
Johannes Berg committed
1059
1060
1061
1062
/* utility functions/constants */
extern void *mac80211_wiphy_privid; /* for wiphy privid */
extern const unsigned char rfc1042_header[6];
extern const unsigned char bridge_tunnel_header[6];
1063
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1064
			enum nl80211_iftype type);
Johannes Berg's avatar
Johannes Berg committed
1065
1066
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
			     int rate, int erp, int short_preamble);
1067
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1068
				     struct ieee80211_hdr *hdr);
1069
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1070
1071
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
		      int encrypt);
1072
1073
void ieee802_11_parse_elems(u8 *start, size_t len,
			    struct ieee802_11_elems *elems);
1074
int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
1075
u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1076
			      enum ieee80211_band band);
1077

1078
1079
1080
void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
void ieee80211_dynamic_ps_timer(unsigned long data);
1081
1082
1083
void ieee80211_send_nullfunc(struct ieee80211_local *local,
			     struct ieee80211_sub_if_data *sdata,
			     int powersave);
1084

1085
1086
1087
1088
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
				     enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
				     enum queue_stop_reason reason);
1089
1090
1091
1092
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason);
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason);
1093

1094
1095
1096
1097
1098
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
			 u16 transaction, u16 auth_alg,
			 u8 *extra, size_t extra_len,
			 const u8 *bssid, int encrypt);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1099
1100
			      u8 *ssid, size_t ssid_len,
			      u8 *ie, size_t ie_len);
1101
1102
1103
1104
1105
1106
1107
1108

void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
				  const size_t supp_rates_len,
				  const u8 *supp_rates);
u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
			    struct ieee802_11_elems *elems,
			    enum ieee80211_band band);

1109
#ifdef CONFIG_MAC80211_NOINLINE
1110
1111
1112
1113
1114
#define debug_noinline noinline
#else
#define debug_noinline
#endif

1115
#endif /* IEEE80211_I_H */