ieee802_11.h - platform/external/tcpdump - Git at Google

 /* @(#) $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)
	/* @(#) $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)