wireless: radiotap: rewrite the radiotap header file (42f82e2e) · Commits · EulixOS / Software / Kernel

include/net/ieee80211_radiotap.h

+157 −298

Original line number	Original line	Diff line number	Diff line
	/*		/*
	* Copyright (c) 2003, 2004 David Young. All rights reserved.		* Copyright (c) 2017 Intel Deutschland GmbH
	*		*
	* Redistribution and use in source and binary forms, with or without		* Permission to use, copy, modify, and/or distribute this software for any
	* modification, are permitted provided that the following conditions		* purpose with or without fee is hereby granted, provided that the above
	* are met:		* copyright notice and this permission notice appear in all copies.
	* 1. Redistributions of source code must retain the above copyright		*
	* notice, this list of conditions and the following disclaimer.		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* 2. Redistributions in binary form must reproduce the above copyright		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* notice, this list of conditions and the following disclaimer in the		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* documentation and/or other materials provided with the distribution.		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* 3. The name of David Young may not be used to endorse or promote		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* products derived from this software without specific prior		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	* written permission.		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*
	* 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)
	*/		*/
			#ifndef __RADIOTAP_H
			#define __RADIOTAP_H

	#ifndef IEEE80211RADIOTAP_H
	#define IEEE80211RADIOTAP_H

	#include <linux/if_ether.h>
	#include <linux/kernel.h>		#include <linux/kernel.h>
	#include <asm/unaligned.h>		#include <asm/unaligned.h>

	/* Base version of the radiotap packet header data */		/**
	#define PKTHDR_RADIOTAP_VERSION 0		* struct ieee82011_radiotap_header - base radiotap header

	/* 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 ieee80211_radiotap_header {		struct ieee80211_radiotap_header {
	u8 it_version; /* Version 0. Only increases		/**
	* for drastic changes,		* @it_version: radiotap version, always 0
	* introduction of compatible
	* new fields does not count.
	*/		*/
	u8 it_pad;		uint8_t it_version;
	__le16 it_len; /* length of the whole
	* header in bytes, including		/**
	* it_version, it_pad,		* @it_pad: padding (or alignment)
	* it_len, and data fields.
	*/		*/
	__le32 it_present; /* A bitmap telling which		uint8_t it_pad;
	* fields are present. Set bit 31
	* (0x80000000) to extend the		/**
	* bitmap by another 32 bits.		* @it_len: overall radiotap header length
	* Additional extensions are made
	* by setting bit 31.
	*/		*/
	} __packed;		__le16 it_len;

	/* Name Data type Units		/**
	* ---- --------- -----		* @it_present: (first) present word
	*
	* 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.
	*/		*/
	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_TSFT = 0,
	IEEE80211_RADIOTAP_FLAGS = 1,		IEEE80211_RADIOTAP_FLAGS = 1,
	IEEE80211_RADIOTAP_RATE = 2,		IEEE80211_RADIOTAP_RATE = 2,
	@@ -214,7 +67,7 @@ enum ieee80211_radiotap_type {
	IEEE80211_RADIOTAP_TX_FLAGS = 15,		IEEE80211_RADIOTAP_TX_FLAGS = 15,
	IEEE80211_RADIOTAP_RTS_RETRIES = 16,		IEEE80211_RADIOTAP_RTS_RETRIES = 16,
	IEEE80211_RADIOTAP_DATA_RETRIES = 17,		IEEE80211_RADIOTAP_DATA_RETRIES = 17,
			/* 18 is XChannel, but it's not defined yet */
	IEEE80211_RADIOTAP_MCS = 19,		IEEE80211_RADIOTAP_MCS = 19,
	IEEE80211_RADIOTAP_AMPDU_STATUS = 20,		IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
	IEEE80211_RADIOTAP_VHT = 21,		IEEE80211_RADIOTAP_VHT = 21,
	@@ -226,129 +79,135 @@ enum ieee80211_radiotap_type {
	IEEE80211_RADIOTAP_EXT = 31		IEEE80211_RADIOTAP_EXT = 31
	};		};

	/* Channel flags. */		/* for IEEE80211_RADIOTAP_FLAGS */
	#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */		enum ieee80211_radiotap_flags {
	#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */		IEEE80211_RADIOTAP_F_CFP = 0x01,
	#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */		IEEE80211_RADIOTAP_F_SHORTPRE = 0x02,
	#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */		IEEE80211_RADIOTAP_F_WEP = 0x04,
	#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */		IEEE80211_RADIOTAP_F_FRAG = 0x08,
	#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */		IEEE80211_RADIOTAP_F_FCS = 0x10,
	#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */		IEEE80211_RADIOTAP_F_DATAPAD = 0x20,
	#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */		IEEE80211_RADIOTAP_F_BADFCS = 0x40,
	#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_TX_FLAGS */		/* for IEEE80211_RADIOTAP_CHANNEL */
	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive		enum ieee80211_radiotap_channel_flags {
	* retries */		IEEE80211_CHAN_CCK = 0x0020,
	#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */		IEEE80211_CHAN_OFDM = 0x0040,
	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */		IEEE80211_CHAN_2GHZ = 0x0080,
	#define IEEE80211_RADIOTAP_F_TX_NOACK 0x0008 /* don't expect an ack */		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 */		/* for IEEE80211_RADIOTAP_TX_FLAGS */
	#define IEEE80211_RADIOTAP_MCS_HAVE_BW 0x01		enum ieee80211_radiotap_tx_flags {
	#define IEEE80211_RADIOTAP_MCS_HAVE_MCS 0x02		IEEE80211_RADIOTAP_F_TX_FAIL = 0x0001,
	#define IEEE80211_RADIOTAP_MCS_HAVE_GI 0x04		IEEE80211_RADIOTAP_F_TX_CTS = 0x0002,
	#define IEEE80211_RADIOTAP_MCS_HAVE_FMT 0x08		IEEE80211_RADIOTAP_F_TX_RTS = 0x0004,
	#define IEEE80211_RADIOTAP_MCS_HAVE_FEC 0x10		IEEE80211_RADIOTAP_F_TX_NOACK = 0x0008,
	#define IEEE80211_RADIOTAP_MCS_HAVE_STBC 0x20		};

	#define IEEE80211_RADIOTAP_MCS_BW_MASK 0x03		/* for IEEE80211_RADIOTAP_MCS "have" flags */
	#define IEEE80211_RADIOTAP_MCS_BW_20 0		enum ieee80211_radiotap_mcs_have {
	#define IEEE80211_RADIOTAP_MCS_BW_40 1		IEEE80211_RADIOTAP_MCS_HAVE_BW = 0x01,
	#define IEEE80211_RADIOTAP_MCS_BW_20L 2		IEEE80211_RADIOTAP_MCS_HAVE_MCS = 0x02,
	#define IEEE80211_RADIOTAP_MCS_BW_20U 3		IEEE80211_RADIOTAP_MCS_HAVE_GI = 0x04,
	#define IEEE80211_RADIOTAP_MCS_SGI 0x04		IEEE80211_RADIOTAP_MCS_HAVE_FMT = 0x08,
	#define IEEE80211_RADIOTAP_MCS_FMT_GF 0x08		IEEE80211_RADIOTAP_MCS_HAVE_FEC = 0x10,
	#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10		IEEE80211_RADIOTAP_MCS_HAVE_STBC = 0x20,
	#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

	#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 */		/* for IEEE80211_RADIOTAP_AMPDU_STATUS */
	#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001		enum ieee80211_radiotap_ampdu_flags {
	#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002		IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN = 0x0001,
	#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004		IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN = 0x0002,
	#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008		IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN = 0x0004,
	#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010		IEEE80211_RADIOTAP_AMPDU_IS_LAST = 0x0008,
	#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020		IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR = 0x0010,
			IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN = 0x0020,
			};

	/* For IEEE80211_RADIOTAP_VHT */		/* for IEEE80211_RADIOTAP_VHT */
	#define IEEE80211_RADIOTAP_VHT_KNOWN_STBC 0x0001		enum ieee80211_radiotap_vht_known {
	#define IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA 0x0002		IEEE80211_RADIOTAP_VHT_KNOWN_STBC = 0x0001,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_GI 0x0004		IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA = 0x0002,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS 0x0008		IEEE80211_RADIOTAP_VHT_KNOWN_GI = 0x0004,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM 0x0010		IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS = 0x0008,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED 0x0020		IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM = 0x0010,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH 0x0040		IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED = 0x0020,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID 0x0080		IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH = 0x0040,
	#define IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID 0x0100		IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID = 0x0080,
			IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID = 0x0100,
			};

	#define IEEE80211_RADIOTAP_VHT_FLAG_STBC 0x01		enum ieee80211_radiotap_vht_flags {
	#define IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA 0x02		IEEE80211_RADIOTAP_VHT_FLAG_STBC = 0x01,
	#define IEEE80211_RADIOTAP_VHT_FLAG_SGI 0x04		IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA = 0x02,
	#define IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 0x08		IEEE80211_RADIOTAP_VHT_FLAG_SGI = 0x04,
	#define IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM 0x10		IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 = 0x08,
	#define IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED 0x20		IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM = 0x10,
			IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED = 0x20,
			};

	#define IEEE80211_RADIOTAP_CODING_LDPC_USER0 0x01		enum ieee80211_radiotap_vht_coding {
	#define IEEE80211_RADIOTAP_CODING_LDPC_USER1 0x02		IEEE80211_RADIOTAP_CODING_LDPC_USER0 = 0x01,
	#define IEEE80211_RADIOTAP_CODING_LDPC_USER2 0x04		IEEE80211_RADIOTAP_CODING_LDPC_USER1 = 0x02,
	#define IEEE80211_RADIOTAP_CODING_LDPC_USER3 0x08		IEEE80211_RADIOTAP_CODING_LDPC_USER2 = 0x04,
			IEEE80211_RADIOTAP_CODING_LDPC_USER3 = 0x08,
			};

	/* For IEEE80211_RADIOTAP_TIMESTAMP */		/* for IEEE80211_RADIOTAP_TIMESTAMP */
	#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK 0x000F		enum ieee80211_radiotap_timestamp_unit_spos {
	#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS 0x0000		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK = 0x000F,
	#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US 0x0001		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS = 0x0000,
	#define IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS 0x0003		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US = 0x0001,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK 0x00F0		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS = 0x0003,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU 0x0000		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK = 0x00F0,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ 0x0010		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU = 0x0000,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU 0x0020		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ = 0x0010,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU 0x0030		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU = 0x0020,
	#define IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN 0x00F0		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU = 0x0030,
			IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN = 0x00F0,
			};

	#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT 0x00		enum ieee80211_radiotap_timestamp_flags {
	#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT 0x01		IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT = 0x00,
	#define IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY 0x02		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 hdr = (void )data;
	(struct ieee80211_radiotap_header *)data;

	return get_unaligned_le16(&hdr->it_len);		return get_unaligned_le16(&hdr->it_len);
	}		}

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