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Commit 42f82e2e authored by Johannes Berg's avatar Johannes Berg
Browse files

wireless: radiotap: rewrite the radiotap header file 



The header file has grown a lot of #define's etc, but
they are nicer as enums, so rewrite the file from the
documentation as such.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 1331b62c

include/net/ieee80211_radiotap.h

+157 −298
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2003, 2004 David Young.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. The name of David Young may not be used to endorse or promote

 *    products derived from this software without specific prior

 *    written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DAVID

 * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED

 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY

 * OF SUCH DAMAGE.

 */



/*

 * Modifications to fit into the linux IEEE 802.11 stack,

 * Mike Kershaw (dragorn@kismetwireless.net)

 * Copyright (c) 2017		Intel Deutschland GmbH

 *

 * Permission to use, copy, modify, and/or distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#ifndef __RADIOTAP_H

#define __RADIOTAP_H



#ifndef IEEE80211RADIOTAP_H

#define IEEE80211RADIOTAP_H



#include <linux/if_ether.h>

#include <linux/kernel.h>

#include <asm/unaligned.h>



/* Base version of the radiotap packet header data */

#define PKTHDR_RADIOTAP_VERSION		0



/* A generic radio capture format is desirable. There is one for

 * Linux, but it is neither rigidly defined (there were not even

 * units given for some fields) nor easily extensible.

 *

 * I suggest the following extensible radio capture format. It is

 * based on a bitmap indicating which fields are present.

 *

 * I am trying to describe precisely what the application programmer

 * should expect in the following, and for that reason I tell the

 * units and origin of each measurement (where it applies), or else I

 * use sufficiently weaselly language ("is a monotonically nondecreasing

 * function of...") that I cannot set false expectations for lawyerly

 * readers.

 */



/*

 * The radio capture header precedes the 802.11 header.

 * All data in the header is little endian on all platforms.

/**

 * struct ieee82011_radiotap_header - base radiotap header

 */

struct ieee80211_radiotap_header {

	u8 it_version;		/* Version 0. Only increases

				 * for drastic changes,

				 * introduction of compatible

				 * new fields does not count.

	/**

	 * @it_version: radiotap version, always 0

	 */

	u8 it_pad;

	__le16 it_len;		/* length of the whole

				 * header in bytes, including

				 * it_version, it_pad,

				 * it_len, and data fields.

	uint8_t it_version;



	/**

	 * @it_pad: padding (or alignment)

	 */

	__le32 it_present;	/* A bitmap telling which

				 * fields are present. Set bit 31

				 * (0x80000000) to extend the

				 * bitmap by another 32 bits.

				 * Additional extensions are made

				 * by setting bit 31.

	uint8_t it_pad;



	/**

	 * @it_len: overall radiotap header length

	 */

} __packed;

	__le16 it_len;



/* Name                                 Data type    Units

 * ----                                 ---------    -----

 *

 * IEEE80211_RADIOTAP_TSFT              __le64       microseconds

 *

 *      Value in microseconds of the MAC's 64-bit 802.11 Time

 *      Synchronization Function timer when the first bit of the

 *      MPDU arrived at the MAC. For received frames, only.

 *

 * IEEE80211_RADIOTAP_CHANNEL           2 x __le16   MHz, bitmap

 *

 *      Tx/Rx frequency in MHz, followed by flags (see below).

 *

 * IEEE80211_RADIOTAP_FHSS              __le16       see below

 *

 *      For frequency-hopping radios, the hop set (first byte)

 *      and pattern (second byte).

 *

 * IEEE80211_RADIOTAP_RATE              u8           500kb/s

 *

 *      Tx/Rx data rate

 *

 * IEEE80211_RADIOTAP_DBM_ANTSIGNAL     s8           decibels from

 *                                                   one milliwatt (dBm)

 *

 *      RF signal power at the antenna, decibel difference from

 *      one milliwatt.

 *

 * IEEE80211_RADIOTAP_DBM_ANTNOISE      s8           decibels from

 *                                                   one milliwatt (dBm)

 *

 *      RF noise power at the antenna, decibel difference from one

 *      milliwatt.

 *

 * IEEE80211_RADIOTAP_DB_ANTSIGNAL      u8           decibel (dB)

 *

 *      RF signal power at the antenna, decibel difference from an

 *      arbitrary, fixed reference.

 *

 * IEEE80211_RADIOTAP_DB_ANTNOISE       u8           decibel (dB)

 *

 *      RF noise power at the antenna, decibel difference from an

 *      arbitrary, fixed reference point.

 *

 * IEEE80211_RADIOTAP_LOCK_QUALITY      __le16       unitless

 *

 *      Quality of Barker code lock. Unitless. Monotonically

 *      nondecreasing with "better" lock strength. Called "Signal

 *      Quality" in datasheets.  (Is there a standard way to measure

 *      this?)

 *

 * IEEE80211_RADIOTAP_TX_ATTENUATION    __le16       unitless

 *

 *      Transmit power expressed as unitless distance from max

 *      power set at factory calibration.  0 is max power.

 *      Monotonically nondecreasing with lower power levels.

 *

 * IEEE80211_RADIOTAP_DB_TX_ATTENUATION __le16       decibels (dB)

 *

 *      Transmit power expressed as decibel distance from max power

 *      set at factory calibration.  0 is max power.  Monotonically

 *      nondecreasing with lower power levels.

 *

 * IEEE80211_RADIOTAP_DBM_TX_POWER      s8           decibels from

 *                                                   one milliwatt (dBm)

 *

 *      Transmit power expressed as dBm (decibels from a 1 milliwatt

 *      reference). This is the absolute power level measured at

 *      the antenna port.

 *

 * IEEE80211_RADIOTAP_FLAGS             u8           bitmap

 *

 *      Properties of transmitted and received frames. See flags

 *      defined below.

 *

 * IEEE80211_RADIOTAP_ANTENNA           u8           antenna index

 *

 *      Unitless indication of the Rx/Tx antenna for this packet.

 *      The first antenna is antenna 0.

 *

 * IEEE80211_RADIOTAP_RX_FLAGS          __le16       bitmap

 *

 *     Properties of received frames. See flags defined below.

 *

 * IEEE80211_RADIOTAP_TX_FLAGS          __le16       bitmap

 *

 *     Properties of transmitted frames. See flags defined below.

 *

 * IEEE80211_RADIOTAP_RTS_RETRIES       u8           data

 *

 *     Number of rts retries a transmitted frame used.

 *

 * IEEE80211_RADIOTAP_DATA_RETRIES      u8           data

 *

 *     Number of unicast retries a transmitted frame used.

 *

 * IEEE80211_RADIOTAP_MCS	u8, u8, u8		unitless

 *

 *     Contains a bitmap of known fields/flags, the flags, and

 *     the MCS index.

 *

 * IEEE80211_RADIOTAP_AMPDU_STATUS	u32, u16, u8, u8	unitless

 *

 *	Contains the AMPDU information for the subframe.

 *

 * IEEE80211_RADIOTAP_VHT	u16, u8, u8, u8[4], u8, u8, u16

 *

 *	Contains VHT information about this frame.

 *

 * IEEE80211_RADIOTAP_TIMESTAMP		u64, u16, u8, u8	variable

 *

 *	Contains timestamp information for this frame.

	/**

	 * @it_present: (first) present word

	 */

enum ieee80211_radiotap_type {

	__le32 it_present;

} __packed;



/* version is always 0 */

#define PKTHDR_RADIOTAP_VERSION	0



/* see the radiotap website for the descriptions */

enum ieee80211_radiotap_presence {

	IEEE80211_RADIOTAP_TSFT = 0,

	IEEE80211_RADIOTAP_FLAGS = 1,

	IEEE80211_RADIOTAP_RATE = 2,
@@ -214,7 +67,7 @@ enum ieee80211_radiotap_type { 
	IEEE80211_RADIOTAP_TX_FLAGS = 15,

	IEEE80211_RADIOTAP_RTS_RETRIES = 16,

	IEEE80211_RADIOTAP_DATA_RETRIES = 17,



	/* 18 is XChannel, but it's not defined yet */

	IEEE80211_RADIOTAP_MCS = 19,

	IEEE80211_RADIOTAP_AMPDU_STATUS = 20,

	IEEE80211_RADIOTAP_VHT = 21,
@@ -226,129 +79,135 @@ enum ieee80211_radiotap_type { 
	IEEE80211_RADIOTAP_EXT = 31

};



/* Channel flags. */

#define	IEEE80211_CHAN_TURBO	0x0010	/* Turbo channel */

#define	IEEE80211_CHAN_CCK	0x0020	/* CCK channel */

#define	IEEE80211_CHAN_OFDM	0x0040	/* OFDM channel */

#define	IEEE80211_CHAN_2GHZ	0x0080	/* 2 GHz spectrum channel. */

#define	IEEE80211_CHAN_5GHZ	0x0100	/* 5 GHz spectrum channel */

#define	IEEE80211_CHAN_PASSIVE	0x0200	/* Only passive scan allowed */

#define	IEEE80211_CHAN_DYN	0x0400	/* Dynamic CCK-OFDM channel */

#define	IEEE80211_CHAN_GFSK	0x0800	/* GFSK channel (FHSS PHY) */

#define	IEEE80211_CHAN_GSM	0x1000	/* GSM (900 MHz) */

#define	IEEE80211_CHAN_STURBO	0x2000	/* Static Turbo */

#define	IEEE80211_CHAN_HALF	0x4000	/* Half channel (10 MHz wide) */

#define	IEEE80211_CHAN_QUARTER	0x8000	/* Quarter channel (5 MHz wide) */



/* For IEEE80211_RADIOTAP_FLAGS */

#define	IEEE80211_RADIOTAP_F_CFP	0x01	/* sent/received

						 * during CFP

						 */

#define	IEEE80211_RADIOTAP_F_SHORTPRE	0x02	/* sent/received

						 * with short

						 * preamble

						 */

#define	IEEE80211_RADIOTAP_F_WEP	0x04	/* sent/received

						 * with WEP encryption

						 */

#define	IEEE80211_RADIOTAP_F_FRAG	0x08	/* sent/received

						 * with fragmentation

						 */

#define	IEEE80211_RADIOTAP_F_FCS	0x10	/* frame includes FCS */

#define	IEEE80211_RADIOTAP_F_DATAPAD	0x20	/* frame has padding between

						 * 802.11 header and payload

						 * (to 32-bit boundary)

						 */

#define IEEE80211_RADIOTAP_F_BADFCS	0x40	/* bad FCS */



/* For IEEE80211_RADIOTAP_RX_FLAGS */

#define IEEE80211_RADIOTAP_F_RX_BADPLCP	0x0002	/* frame has bad PLCP */

/* for IEEE80211_RADIOTAP_FLAGS */

enum ieee80211_radiotap_flags {

	IEEE80211_RADIOTAP_F_CFP = 0x01,

	IEEE80211_RADIOTAP_F_SHORTPRE = 0x02,

	IEEE80211_RADIOTAP_F_WEP = 0x04,

	IEEE80211_RADIOTAP_F_FRAG = 0x08,

	IEEE80211_RADIOTAP_F_FCS = 0x10,

	IEEE80211_RADIOTAP_F_DATAPAD = 0x20,

	IEEE80211_RADIOTAP_F_BADFCS = 0x40,

};



/* For IEEE80211_RADIOTAP_TX_FLAGS */

#define IEEE80211_RADIOTAP_F_TX_FAIL	0x0001	/* failed due to excessive

						 * retries */

#define IEEE80211_RADIOTAP_F_TX_CTS	0x0002	/* used cts 'protection' */

#define IEEE80211_RADIOTAP_F_TX_RTS	0x0004	/* used rts/cts handshake */

#define IEEE80211_RADIOTAP_F_TX_NOACK	0x0008	/* don't expect an ack */

/* for IEEE80211_RADIOTAP_CHANNEL */

enum ieee80211_radiotap_channel_flags {

	IEEE80211_CHAN_CCK = 0x0020,

	IEEE80211_CHAN_OFDM = 0x0040,

	IEEE80211_CHAN_2GHZ = 0x0080,

	IEEE80211_CHAN_5GHZ = 0x0100,

	IEEE80211_CHAN_DYN = 0x0400,

	IEEE80211_CHAN_HALF = 0x4000,

	IEEE80211_CHAN_QUARTER = 0x8000,

};



/* for IEEE80211_RADIOTAP_RX_FLAGS */

enum ieee80211_radiotap_rx_flags {

	IEEE80211_RADIOTAP_F_RX_BADPLCP = 0x0002,

};



/* For IEEE80211_RADIOTAP_MCS */

#define IEEE80211_RADIOTAP_MCS_HAVE_BW		0x01

#define IEEE80211_RADIOTAP_MCS_HAVE_MCS		0x02

#define IEEE80211_RADIOTAP_MCS_HAVE_GI		0x04

#define IEEE80211_RADIOTAP_MCS_HAVE_FMT		0x08

#define IEEE80211_RADIOTAP_MCS_HAVE_FEC		0x10

#define IEEE80211_RADIOTAP_MCS_HAVE_STBC	0x20

/* for IEEE80211_RADIOTAP_TX_FLAGS */

enum ieee80211_radiotap_tx_flags {

	IEEE80211_RADIOTAP_F_TX_FAIL = 0x0001,

	IEEE80211_RADIOTAP_F_TX_CTS = 0x0002,

	IEEE80211_RADIOTAP_F_TX_RTS = 0x0004,

	IEEE80211_RADIOTAP_F_TX_NOACK = 0x0008,

};



#define IEEE80211_RADIOTAP_MCS_BW_MASK		0x03

#define		IEEE80211_RADIOTAP_MCS_BW_20	0

#define		IEEE80211_RADIOTAP_MCS_BW_40	1

#define		IEEE80211_RADIOTAP_MCS_BW_20L	2

#define		IEEE80211_RADIOTAP_MCS_BW_20U	3

#define IEEE80211_RADIOTAP_MCS_SGI		0x04

#define IEEE80211_RADIOTAP_MCS_FMT_GF		0x08

#define IEEE80211_RADIOTAP_MCS_FEC_LDPC		0x10

#define IEEE80211_RADIOTAP_MCS_STBC_MASK	0x60

#define		IEEE80211_RADIOTAP_MCS_STBC_1	1

#define		IEEE80211_RADIOTAP_MCS_STBC_2	2

#define		IEEE80211_RADIOTAP_MCS_STBC_3	3

/* for IEEE80211_RADIOTAP_MCS "have" flags */

enum ieee80211_radiotap_mcs_have {

	IEEE80211_RADIOTAP_MCS_HAVE_BW = 0x01,

	IEEE80211_RADIOTAP_MCS_HAVE_MCS = 0x02,

	IEEE80211_RADIOTAP_MCS_HAVE_GI = 0x04,

	IEEE80211_RADIOTAP_MCS_HAVE_FMT = 0x08,

	IEEE80211_RADIOTAP_MCS_HAVE_FEC = 0x10,

	IEEE80211_RADIOTAP_MCS_HAVE_STBC = 0x20,

};



#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT	5

enum ieee80211_radiotap_mcs_flags {

	IEEE80211_RADIOTAP_MCS_BW_MASK = 0x03,

	IEEE80211_RADIOTAP_MCS_BW_20 = 0,

	IEEE80211_RADIOTAP_MCS_BW_40 = 1,

	IEEE80211_RADIOTAP_MCS_BW_20L = 2,

	IEEE80211_RADIOTAP_MCS_BW_20U = 3,



	IEEE80211_RADIOTAP_MCS_SGI = 0x04,

	IEEE80211_RADIOTAP_MCS_FMT_GF = 0x08,

	IEEE80211_RADIOTAP_MCS_FEC_LDPC = 0x10,

	IEEE80211_RADIOTAP_MCS_STBC_MASK = 0x60,

	IEEE80211_RADIOTAP_MCS_STBC_1 = 1,

	IEEE80211_RADIOTAP_MCS_STBC_2 = 2,

	IEEE80211_RADIOTAP_MCS_STBC_3 = 3,

	IEEE80211_RADIOTAP_MCS_STBC_SHIFT = 5,

};



/* For IEEE80211_RADIOTAP_AMPDU_STATUS */

#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN		0x0001

#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN		0x0002

#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN		0x0004

#define IEEE80211_RADIOTAP_AMPDU_IS_LAST		0x0008

#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR		0x0010

#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN	0x0020

/* for IEEE80211_RADIOTAP_AMPDU_STATUS */

enum ieee80211_radiotap_ampdu_flags {

	IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN = 0x0001,

	IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN = 0x0002,

	IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN = 0x0004,

	IEEE80211_RADIOTAP_AMPDU_IS_LAST = 0x0008,

	IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR = 0x0010,

	IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN = 0x0020,

};



/* For IEEE80211_RADIOTAP_VHT */

#define IEEE80211_RADIOTAP_VHT_KNOWN_STBC			0x0001

#define IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA			0x0002

#define IEEE80211_RADIOTAP_VHT_KNOWN_GI				0x0004

#define IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS		0x0008

#define IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM	0x0010

#define IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED			0x0020

#define IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH			0x0040

#define IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID			0x0080

#define IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID		0x0100

/* for IEEE80211_RADIOTAP_VHT */

enum ieee80211_radiotap_vht_known {

	IEEE80211_RADIOTAP_VHT_KNOWN_STBC = 0x0001,

	IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA = 0x0002,

	IEEE80211_RADIOTAP_VHT_KNOWN_GI = 0x0004,

	IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS = 0x0008,

	IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM = 0x0010,

	IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED = 0x0020,

	IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH = 0x0040,

	IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID = 0x0080,

	IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID = 0x0100,

};



#define IEEE80211_RADIOTAP_VHT_FLAG_STBC			0x01

#define IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA			0x02

#define IEEE80211_RADIOTAP_VHT_FLAG_SGI				0x04

#define IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9		0x08

#define IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM		0x10

#define IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED			0x20

enum ieee80211_radiotap_vht_flags {

	IEEE80211_RADIOTAP_VHT_FLAG_STBC = 0x01,

	IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA = 0x02,

	IEEE80211_RADIOTAP_VHT_FLAG_SGI = 0x04,

	IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 = 0x08,

	IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM = 0x10,

	IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED = 0x20,

};



#define IEEE80211_RADIOTAP_CODING_LDPC_USER0			0x01

#define IEEE80211_RADIOTAP_CODING_LDPC_USER1			0x02

#define IEEE80211_RADIOTAP_CODING_LDPC_USER2			0x04

#define IEEE80211_RADIOTAP_CODING_LDPC_USER3			0x08

enum ieee80211_radiotap_vht_coding {

	IEEE80211_RADIOTAP_CODING_LDPC_USER0 = 0x01,

	IEEE80211_RADIOTAP_CODING_LDPC_USER1 = 0x02,

	IEEE80211_RADIOTAP_CODING_LDPC_USER2 = 0x04,

	IEEE80211_RADIOTAP_CODING_LDPC_USER3 = 0x08,

};



/* For IEEE80211_RADIOTAP_TIMESTAMP */

#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK			0x000F

#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS			0x0000

#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US			0x0001

#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS			0x0003

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK			0x00F0

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU		0x0000

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ		0x0010

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU		0x0020

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU		0x0030

#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN		0x00F0

/* for IEEE80211_RADIOTAP_TIMESTAMP */

enum ieee80211_radiotap_timestamp_unit_spos {

	IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK = 0x000F,

	IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS = 0x0000,

	IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US = 0x0001,

	IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS = 0x0003,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK = 0x00F0,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU = 0x0000,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ = 0x0010,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU = 0x0020,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU = 0x0030,

	IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN = 0x00F0,

};



#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT			0x00

#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT			0x01

#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY		0x02

enum ieee80211_radiotap_timestamp_flags {

	IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT = 0x00,

	IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT = 0x01,

	IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY = 0x02,

};



/* helpers */

static inline int ieee80211_get_radiotap_len(unsigned char *data)

/**

 * ieee80211_get_radiotap_len - get radiotap header length

 */

static inline u16 ieee80211_get_radiotap_len(const char *data)

{

	struct ieee80211_radiotap_header *hdr =

		(struct ieee80211_radiotap_header *)data;

	struct ieee80211_radiotap_header *hdr = (void *)data;



	return get_unaligned_le16(&hdr->it_len);

}



#endif				/* IEEE80211_RADIOTAP_H */
 
#endif /* __RADIOTAP_H */