[dragonfly.git] / contrib / tcpdump / ieee802_11.h

/* @(#) $Header: /tcpdump/master/tcpdump/ieee802_11.h,v 1.9.4.3 2007/07/22 20:01:16 guy Exp $ (LBL) */
/*
 * Copyright (c) 2001
 *	Fortress Technologies
 *      Charlie Lenahan ( clenahan@fortresstech.com )
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/* Lengths of 802.11 header components. */
#define	IEEE802_11_FC_LEN		2
#define	IEEE802_11_DUR_LEN		2
#define	IEEE802_11_DA_LEN		6
#define	IEEE802_11_SA_LEN		6
#define	IEEE802_11_BSSID_LEN		6
#define	IEEE802_11_RA_LEN		6
#define	IEEE802_11_TA_LEN		6
#define	IEEE802_11_SEQ_LEN		2
#define	IEEE802_11_IV_LEN		3
#define	IEEE802_11_KID_LEN		1

/* Frame check sequence length. */
#define	IEEE802_11_FCS_LEN		4

/* Lengths of beacon components. */
#define	IEEE802_11_TSTAMP_LEN		8
#define	IEEE802_11_BCNINT_LEN		2
#define	IEEE802_11_CAPINFO_LEN		2
#define	IEEE802_11_LISTENINT_LEN	2

#define	IEEE802_11_AID_LEN		2
#define	IEEE802_11_STATUS_LEN		2
#define	IEEE802_11_REASON_LEN		2

/* Length of previous AP in reassocation frame */
#define	IEEE802_11_AP_LEN		6

#define	T_MGMT 0x0  /* management */
#define	T_CTRL 0x1  /* control */
#define	T_DATA 0x2 /* data */
#define	T_RESV 0x3  /* reserved */

#define	ST_ASSOC_REQUEST   	0x0
#define	ST_ASSOC_RESPONSE 	0x1
#define	ST_REASSOC_REQUEST   	0x2
#define	ST_REASSOC_RESPONSE  	0x3
#define	ST_PROBE_REQUEST   	0x4
#define	ST_PROBE_RESPONSE   	0x5
/* RESERVED 			0x6  */
/* RESERVED 			0x7  */
#define	ST_BEACON   		0x8
#define	ST_ATIM			0x9
#define	ST_DISASSOC		0xA
#define	ST_AUTH			0xB
#define	ST_DEAUTH		0xC
/* RESERVED 			0xD  */
/* RESERVED 			0xE  */
/* RESERVED 			0xF  */


#define	CTRL_PS_POLL	0xA
#define	CTRL_RTS	0xB
#define	CTRL_CTS	0xC
#define	CTRL_ACK	0xD
#define	CTRL_CF_END	0xE
#define	CTRL_END_ACK	0xF

#define	DATA_DATA			0x0
#define	DATA_DATA_CF_ACK		0x1
#define	DATA_DATA_CF_POLL		0x2
#define	DATA_DATA_CF_ACK_POLL		0x3
#define	DATA_NODATA			0x4
#define	DATA_NODATA_CF_ACK		0x5
#define	DATA_NODATA_CF_POLL		0x6
#define	DATA_NODATA_CF_ACK_POLL		0x7

#define DATA_QOS_DATA			0x8
#define DATA_QOS_DATA_CF_ACK		0x9
#define DATA_QOS_DATA_CF_POLL		0xA
#define DATA_QOS_DATA_CF_ACK_POLL	0xB
#define DATA_QOS_NODATA			0xC
#define DATA_QOS_CF_POLL_NODATA		0xE
#define DATA_QOS_CF_ACK_POLL_NODATA	0xF

/*
 * The subtype field of a data frame is, in effect, composed of 4 flag
 * bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have
 * any data), and QoS.
 */
#define DATA_FRAME_IS_CF_ACK(x)		((x) & 0x01)
#define DATA_FRAME_IS_CF_POLL(x)	((x) & 0x02)
#define DATA_FRAME_IS_NULL(x)		((x) & 0x04)
#define DATA_FRAME_IS_QOS(x)		((x) & 0x08)

/*
 * Bits in the frame control field.
 */
#define	FC_VERSION(fc)		((fc) & 0x3)
#define	FC_TYPE(fc)		(((fc) >> 2) & 0x3)
#define	FC_SUBTYPE(fc)		(((fc) >> 4) & 0xF)
#define	FC_TO_DS(fc)		((fc) & 0x0100)
#define	FC_FROM_DS(fc)		((fc) & 0x0200)
#define	FC_MORE_FLAG(fc)	((fc) & 0x0400)
#define	FC_RETRY(fc)		((fc) & 0x0800)
#define	FC_POWER_MGMT(fc)	((fc) & 0x1000)
#define	FC_MORE_DATA(fc)	((fc) & 0x2000)
#define	FC_WEP(fc)		((fc) & 0x4000)
#define	FC_ORDER(fc)		((fc) & 0x8000)

struct mgmt_header_t {
	u_int16_t	fc;
	u_int16_t 	duration;
	u_int8_t	da[6];
	u_int8_t	sa[6];
	u_int8_t	bssid[6];
	u_int16_t	seq_ctrl;
};

#define	MGMT_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
			 IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\
			 IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN)

#define	CAPABILITY_ESS(cap)	((cap) & 0x0001)
#define	CAPABILITY_IBSS(cap)	((cap) & 0x0002)
#define	CAPABILITY_CFP(cap)	((cap) & 0x0004)
#define	CAPABILITY_CFP_REQ(cap)	((cap) & 0x0008)
#define	CAPABILITY_PRIVACY(cap)	((cap) & 0x0010)

typedef enum {
	NOT_PRESENT,
	PRESENT,
	TRUNCATED
} elem_status_t;

struct ssid_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_char		ssid[33];  /* 32 + 1 for null */
};

struct rates_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int8_t	rate[16];
};

struct challenge_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int8_t	text[254]; /* 1-253 + 1 for null */
};

struct fh_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int16_t	dwell_time;
	u_int8_t	hop_set;
	u_int8_t 	hop_pattern;
	u_int8_t	hop_index;
};

struct ds_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int8_t	channel;
};

struct cf_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int8_t	count;
	u_int8_t	period;
	u_int16_t	max_duration;
	u_int16_t	dur_remaing;
};

struct tim_t {
	u_int8_t	element_id;
	u_int8_t	length;
	u_int8_t	count;
	u_int8_t	period;
	u_int8_t	bitmap_control;
	u_int8_t	bitmap[251];
};

#define	E_SSID 		0
#define	E_RATES 	1
#define	E_FH	 	2
#define	E_DS 		3
#define	E_CF	 	4
#define	E_TIM	 	5
#define	E_IBSS 		6
/* reserved 		7 */
/* reserved 		8 */
/* reserved 		9 */
/* reserved 		10 */
/* reserved 		11 */
/* reserved 		12 */
/* reserved 		13 */
/* reserved 		14 */
/* reserved 		15 */
/* reserved 		16 */

#define	E_CHALLENGE 	16
/* reserved 		17 */
/* reserved 		18 */
/* reserved 		19 */
/* reserved 		16 */
/* reserved 		16 */


struct mgmt_body_t {
	u_int8_t   	timestamp[IEEE802_11_TSTAMP_LEN];
	u_int16_t  	beacon_interval;
	u_int16_t 	listen_interval;
	u_int16_t 	status_code;
	u_int16_t 	aid;
	u_char		ap[IEEE802_11_AP_LEN];
	u_int16_t	reason_code;
	u_int16_t	auth_alg;
	u_int16_t	auth_trans_seq_num;
	elem_status_t	challenge_status;
	struct challenge_t  challenge;
	u_int16_t	capability_info;
	elem_status_t	ssid_status;
	struct ssid_t	ssid;
	elem_status_t	rates_status;
	struct rates_t 	rates;
	elem_status_t	ds_status;
	struct ds_t	ds;
	elem_status_t	cf_status;
	struct cf_t	cf;
	elem_status_t	fh_status;
	struct fh_t	fh;
	elem_status_t	tim_status;
	struct tim_t	tim;
};

struct ctrl_rts_t {
	u_int16_t	fc;
	u_int16_t	duration;
	u_int8_t	ra[6];
	u_int8_t	ta[6];
	u_int8_t	fcs[4];
};

#define	CTRL_RTS_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
			 IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)

struct ctrl_cts_t {
	u_int16_t	fc;
	u_int16_t	duration;
	u_int8_t	ra[6];
	u_int8_t	fcs[4];
};

#define	CTRL_CTS_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)

struct ctrl_ack_t {
	u_int16_t	fc;
	u_int16_t	duration;
	u_int8_t	ra[6];
	u_int8_t	fcs[4];
};

#define	CTRL_ACK_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)

struct ctrl_ps_poll_t {
	u_int16_t	fc;
	u_int16_t	aid;
	u_int8_t	bssid[6];
	u_int8_t	ta[6];
	u_int8_t	fcs[4];
};

#define	CTRL_PS_POLL_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\
				 IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN)

struct ctrl_end_t {
	u_int16_t	fc;
	u_int16_t	duration;
	u_int8_t	ra[6];
	u_int8_t	bssid[6];
	u_int8_t	fcs[4];
};

#define	CTRL_END_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
			 IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)

struct ctrl_end_ack_t {
	u_int16_t	fc;
	u_int16_t	duration;
	u_int8_t	ra[6];
	u_int8_t	bssid[6];
	u_int8_t	fcs[4];
};

#define	CTRL_END_ACK_HDRLEN	(IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
				 IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)

#define	IV_IV(iv)	((iv) & 0xFFFFFF)
#define	IV_PAD(iv)	(((iv) >> 24) & 0x3F)
#define	IV_KEYID(iv)	(((iv) >> 30) & 0x03)
Commit	Line	Data
66170f0a	1	/* @(#) $Header: /tcpdump/master/tcpdump/ieee802_11.h,v 1.9.4.3 2007/07/22 20:01:16 guy Exp $ (LBL) */
c8cf0f94 PA	2	/*
	3	* Copyright (c) 2001
	4	* Fortress Technologies
	5	* Charlie Lenahan ( clenahan@fortresstech.com )
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that: (1) source code distributions
	9	* retain the above copyright notice and this paragraph in its entirety, (2)
	10	* distributions including binary code include the above copyright notice and
	11	* this paragraph in its entirety in the documentation or other materials
	12	* provided with the distribution, and (3) all advertising materials mentioning
	13	* features or use of this software display the following acknowledgement:
	14	* ``This product includes software developed by the University of California,
	15	* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
	16	* the University nor the names of its contributors may be used to endorse
	17	* or promote products derived from this software without specific prior
	18	* written permission.
	19	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
	20	* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
	21	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	22	*/
	23
	24	/* Lengths of 802.11 header components. */
	25	#define IEEE802_11_FC_LEN 2
	26	#define IEEE802_11_DUR_LEN 2
	27	#define IEEE802_11_DA_LEN 6
	28	#define IEEE802_11_SA_LEN 6
	29	#define IEEE802_11_BSSID_LEN 6
	30	#define IEEE802_11_RA_LEN 6
	31	#define IEEE802_11_TA_LEN 6
	32	#define IEEE802_11_SEQ_LEN 2
	33	#define IEEE802_11_IV_LEN 3
	34	#define IEEE802_11_KID_LEN 1
	35
	36	/* Frame check sequence length. */
	37	#define IEEE802_11_FCS_LEN 4
	38
	39	/* Lengths of beacon components. */
	40	#define IEEE802_11_TSTAMP_LEN 8
	41	#define IEEE802_11_BCNINT_LEN 2
	42	#define IEEE802_11_CAPINFO_LEN 2
	43	#define IEEE802_11_LISTENINT_LEN 2
	44
	45	#define IEEE802_11_AID_LEN 2
	46	#define IEEE802_11_STATUS_LEN 2
	47	#define IEEE802_11_REASON_LEN 2
	48
	49	/* Length of previous AP in reassocation frame */
	50	#define IEEE802_11_AP_LEN 6
	51
	52	#define T_MGMT 0x0 /* management */
	53	#define T_CTRL 0x1 /* control */
	54	#define T_DATA 0x2 /* data */
	55	#define T_RESV 0x3 /* reserved */
	56
	57	#define ST_ASSOC_REQUEST 0x0
	58	#define ST_ASSOC_RESPONSE 0x1
	59	#define ST_REASSOC_REQUEST 0x2
	60	#define ST_REASSOC_RESPONSE 0x3
	61	#define ST_PROBE_REQUEST 0x4
	62	#define ST_PROBE_RESPONSE 0x5
	63	/* RESERVED 0x6 */
	64	/* RESERVED 0x7 */
	65	#define ST_BEACON 0x8
66	#define ST_ATIM 0x9
67	#define ST_DISASSOC 0xA
68	#define ST_AUTH 0xB
69	#define ST_DEAUTH 0xC
70	/* RESERVED 0xD */
71	/* RESERVED 0xE */
72	/* RESERVED 0xF */
73
74
75	#define CTRL_PS_POLL 0xA
76	#define CTRL_RTS 0xB
77	#define CTRL_CTS 0xC
78	#define CTRL_ACK 0xD
79	#define CTRL_CF_END 0xE
80	#define CTRL_END_ACK 0xF
81
66170f0a PA	82	#define DATA_DATA 0x0
	83	#define DATA_DATA_CF_ACK 0x1
	84	#define DATA_DATA_CF_POLL 0x2
	85	#define DATA_DATA_CF_ACK_POLL 0x3
	86	#define DATA_NODATA 0x4
	87	#define DATA_NODATA_CF_ACK 0x5
	88	#define DATA_NODATA_CF_POLL 0x6
	89	#define DATA_NODATA_CF_ACK_POLL 0x7
	90
	91	#define DATA_QOS_DATA 0x8
	92	#define DATA_QOS_DATA_CF_ACK 0x9
	93	#define DATA_QOS_DATA_CF_POLL 0xA
	94	#define DATA_QOS_DATA_CF_ACK_POLL 0xB
	95	#define DATA_QOS_NODATA 0xC
	96	#define DATA_QOS_CF_POLL_NODATA 0xE
	97	#define DATA_QOS_CF_ACK_POLL_NODATA 0xF
	98
	99	/*
	100	* The subtype field of a data frame is, in effect, composed of 4 flag
	101	* bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have
	102	* any data), and QoS.
	103	*/
	104	#define DATA_FRAME_IS_CF_ACK(x) ((x) & 0x01)
	105	#define DATA_FRAME_IS_CF_POLL(x) ((x) & 0x02)
	106	#define DATA_FRAME_IS_NULL(x) ((x) & 0x04)
	107	#define DATA_FRAME_IS_QOS(x) ((x) & 0x08)
c8cf0f94 PA	108
	109	/*
	110	* Bits in the frame control field.
	111	*/
	112	#define FC_VERSION(fc) ((fc) & 0x3)
	113	#define FC_TYPE(fc) (((fc) >> 2) & 0x3)
	114	#define FC_SUBTYPE(fc) (((fc) >> 4) & 0xF)
	115	#define FC_TO_DS(fc) ((fc) & 0x0100)
	116	#define FC_FROM_DS(fc) ((fc) & 0x0200)
	117	#define FC_MORE_FLAG(fc) ((fc) & 0x0400)
	118	#define FC_RETRY(fc) ((fc) & 0x0800)
	119	#define FC_POWER_MGMT(fc) ((fc) & 0x1000)
	120	#define FC_MORE_DATA(fc) ((fc) & 0x2000)
	121	#define FC_WEP(fc) ((fc) & 0x4000)
	122	#define FC_ORDER(fc) ((fc) & 0x8000)
	123
	124	struct mgmt_header_t {
	125	u_int16_t fc;
	126	u_int16_t duration;
	127	u_int8_t da[6];
	128	u_int8_t sa[6];
	129	u_int8_t bssid[6];
	130	u_int16_t seq_ctrl;
	131	};
	132
	133	#define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
	134	IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\
	135	IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN)
	136
	137	#define CAPABILITY_ESS(cap) ((cap) & 0x0001)
	138	#define CAPABILITY_IBSS(cap) ((cap) & 0x0002)
	139	#define CAPABILITY_CFP(cap) ((cap) & 0x0004)
	140	#define CAPABILITY_CFP_REQ(cap) ((cap) & 0x0008)
	141	#define CAPABILITY_PRIVACY(cap) ((cap) & 0x0010)
	142
	143	typedef enum {
	144	NOT_PRESENT,
	145	PRESENT,
	146	TRUNCATED
	147	} elem_status_t;
	148
	149	struct ssid_t {
	150	u_int8_t element_id;
	151	u_int8_t length;
	152	u_char ssid[33]; /* 32 + 1 for null */
	153	};
	154
	155	struct rates_t {
	156	u_int8_t element_id;
	157	u_int8_t length;
	158	u_int8_t rate[16];
	159	};
	160
	161	struct challenge_t {
	162	u_int8_t element_id;
	163	u_int8_t length;
	164	u_int8_t text[254]; /* 1-253 + 1 for null */
	165	};
	166
	167	struct fh_t {
	168	u_int8_t element_id;
	169	u_int8_t length;
	170	u_int16_t dwell_time;
	171	u_int8_t hop_set;
172	u_int8_t hop_pattern;
173	u_int8_t hop_index;
174	};
175
176	struct ds_t {
177	u_int8_t element_id;
178	u_int8_t length;
179	u_int8_t channel;
180	};
181
182	struct cf_t {
183	u_int8_t element_id;
184	u_int8_t length;
185	u_int8_t count;
186	u_int8_t period;
187	u_int16_t max_duration;
188	u_int16_t dur_remaing;
189	};
190
191	struct tim_t {
192	u_int8_t element_id;
193	u_int8_t length;
194	u_int8_t count;
195	u_int8_t period;
196	u_int8_t bitmap_control;
197	u_int8_t bitmap[251];
198	};
199
200	#define E_SSID 0
201	#define E_RATES 1
202	#define E_FH 2
203	#define E_DS 3
204	#define E_CF 4
205	#define E_TIM 5
206	#define E_IBSS 6
207	/* reserved 7 */
208	/* reserved 8 */
209	/* reserved 9 */
210	/* reserved 10 */
211	/* reserved 11 */
212	/* reserved 12 */
213	/* reserved 13 */
214	/* reserved 14 */
215	/* reserved 15 */
216	/* reserved 16 */
217
218	#define E_CHALLENGE 16
219	/* reserved 17 */
220	/* reserved 18 */
221	/* reserved 19 */
222	/* reserved 16 */
223	/* reserved 16 */
224
225
226	struct mgmt_body_t {
227	u_int8_t timestamp[IEEE802_11_TSTAMP_LEN];
228	u_int16_t beacon_interval;
229	u_int16_t listen_interval;
230	u_int16_t status_code;
231	u_int16_t aid;
232	u_char ap[IEEE802_11_AP_LEN];
233	u_int16_t reason_code;
234	u_int16_t auth_alg;
235	u_int16_t auth_trans_seq_num;
236	elem_status_t challenge_status;
237	struct challenge_t challenge;
238	u_int16_t capability_info;
239	elem_status_t ssid_status;
240	struct ssid_t ssid;
241	elem_status_t rates_status;
242	struct rates_t rates;
243	elem_status_t ds_status;
244	struct ds_t ds;
245	elem_status_t cf_status;
246	struct cf_t cf;
247	elem_status_t fh_status;
248	struct fh_t fh;
249	elem_status_t tim_status;
250	struct tim_t tim;
251	};
252
253	struct ctrl_rts_t {
254	u_int16_t fc;
255	u_int16_t duration;
256	u_int8_t ra[6];
257	u_int8_t ta[6];
258	u_int8_t fcs[4];
259	};
260
261	#define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
262	IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
263
264	struct ctrl_cts_t {
265	u_int16_t fc;
266	u_int16_t duration;
267	u_int8_t ra[6];
268	u_int8_t fcs[4];
269	};
270
271	#define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
272
273	struct ctrl_ack_t {
274	u_int16_t fc;
275	u_int16_t duration;
276	u_int8_t ra[6];
277	u_int8_t fcs[4];
278	};
279
280	#define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
281
282	struct ctrl_ps_poll_t {
283	u_int16_t fc;
284	u_int16_t aid;
285	u_int8_t bssid[6];
286	u_int8_t ta[6];
287	u_int8_t fcs[4];
288	};
289
290	#define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\
291	IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN)
292
293	struct ctrl_end_t {
294	u_int16_t fc;
295	u_int16_t duration;
296	u_int8_t ra[6];
297	u_int8_t bssid[6];
298	u_int8_t fcs[4];
299	};
300
301	#define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
302	IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
303
304	struct ctrl_end_ack_t {
305	u_int16_t fc;
306	u_int16_t duration;
307	u_int8_t ra[6];
308	u_int8_t bssid[6];
309	u_int8_t fcs[4];
310	};
311
312	#define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
313	IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
314
315	#define IV_IV(iv) ((iv) & 0xFFFFFF)
316	#define IV_PAD(iv) (((iv) >> 24) & 0x3F)
317	#define IV_KEYID(iv) (((iv) >> 30) & 0x03)