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Commit 42f82e2e authored by Johannes Berg's avatar Johannes Berg
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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
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Showing with 157 additions and 298 deletions
include/net/ieee80211_radiotap.h
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/* /*
* 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. uint8_t it_version;
*/
u8 it_pad; /**
__le16 it_len; /* length of the whole * @it_pad: padding (or alignment)
* header in bytes, including */
* it_version, it_pad, uint8_t it_pad;
* it_len, and data fields.
*/ /**
__le32 it_present; /* A bitmap telling which * @it_len: overall radiotap header length
* fields are present. Set bit 31 */
* (0x80000000) to extend the __le16 it_len;
* bitmap by another 32 bits.
* Additional extensions are made /**
* by setting bit 31. * @it_present: (first) present word
*/ */
__le32 it_present;
} __packed; } __packed;
/* Name Data type Units /* version is always 0 */
* ---- --------- ----- #define PKTHDR_RADIOTAP_VERSION 0
*
* IEEE80211_RADIOTAP_TSFT __le64 microseconds /* see the radiotap website for the descriptions */
* enum ieee80211_radiotap_presence {
* 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 {
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 { ...@@ -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 { ...@@ -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 */
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