/*- * 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) */ #ifndef IEEE80211RADIOTAP_H #define IEEE80211RADIOTAP_H #include /* 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 ieee80211_radiotap_header { guint8 it_version; /* Version 0. Only increases * for drastic changes, * introduction of compatible * new fields does not count. */ guint8 it_pad; guint16 it_len; /* length of the whole * header in bytes, including * it_version, it_pad, * it_len, and data fields. */ guint32 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. */ }; /* 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 guint16 MHz, bitmap * * Tx/Rx frequency in MHz, followed by flags (see below). * * IEEE80211_RADIOTAP_FHSS guint16 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 guint16 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 guint16 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 guint16 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 guint16 bitmap * * Properties of received frames. See flags defined below. * * IEEE80211_RADIOTAP_TX_FLAGS guint16 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 unitlesss * * Contains the AMPDU information for the subframe. */ enum ieee80211_radiotap_type { IEEE80211_RADIOTAP_TSFT = 0, IEEE80211_RADIOTAP_FLAGS = 1, IEEE80211_RADIOTAP_RATE = 2, IEEE80211_RADIOTAP_CHANNEL = 3, IEEE80211_RADIOTAP_FHSS = 4, IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, IEEE80211_RADIOTAP_LOCK_QUALITY = 7, IEEE80211_RADIOTAP_TX_ATTENUATION = 8, IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, IEEE80211_RADIOTAP_DBM_TX_POWER = 10, IEEE80211_RADIOTAP_ANTENNA = 11, IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, IEEE80211_RADIOTAP_DB_ANTNOISE = 13, IEEE80211_RADIOTAP_RX_FLAGS = 14, IEEE80211_RADIOTAP_TX_FLAGS = 15, IEEE80211_RADIOTAP_RTS_RETRIES = 16, IEEE80211_RADIOTAP_DATA_RETRIES = 17, IEEE80211_RADIOTAP_XCHANNEL = 18, /* Unofficial, used by FreeBSD */ IEEE80211_RADIOTAP_MCS = 19, IEEE80211_RADIOTAP_AMPDU_STATUS = 20, IEEE80211_RADIOTAP_VHT = 21, /* valid in every it_present bitmap, even vendor namespaces */ IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29, IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, IEEE80211_RADIOTAP_EXT = 31 }; /* not (yet) defined Radiotap present flag */ /* Bit 22 to 28 are not defined (in binary : 0001 1111 1100 0000 0000 0000 0000 0000 */ #define IEEE80211_RADIOTAP_NOTDEFINED 0x1FC00000 /* Channel flags. */ /* 0x00000001 through 0x00000008 undefined (reserved?) */ #define IEEE80211_CHAN_TURBO 0x00000010 /* Turbo channel */ #define IEEE80211_CHAN_CCK 0x00000020 /* CCK channel */ #define IEEE80211_CHAN_OFDM 0x00000040 /* OFDM channel */ #define IEEE80211_CHAN_2GHZ 0x00000080 /* 2 GHz spectrum channel. */ #define IEEE80211_CHAN_5GHZ 0x00000100 /* 5 GHz spectrum channel */ #define IEEE80211_CHAN_PASSIVE 0x00000200 /* Only passive scan allowed */ #define IEEE80211_CHAN_DYN 0x00000400 /* Dynamic CCK-OFDM channel */ #define IEEE80211_CHAN_GFSK 0x00000800 /* GFSK channel (FHSS PHY) */ /* Additional XChannel flags. */ #define IEEE80211_CHAN_GSM 0x00001000 /* 900 MHz spectrum channel */ #define IEEE80211_CHAN_STURBO 0x00002000 /* 11a static turbo channel only */ #define IEEE80211_CHAN_HALF 0x00004000 /* Half rate channel */ #define IEEE80211_CHAN_QUARTER 0x00008000 /* Quarter rate channel */ #define IEEE80211_CHAN_HT20 0x00010000 /* HT 20 channel */ #define IEEE80211_CHAN_HT40U 0x00020000 /* HT 40 channel w/ ext above */ #define IEEE80211_CHAN_HT40D 0x00040000 /* HT 40 channel w/ ext below */ #define IEEE80211_CHAN_HT40 (IEEE80211_CHAN_HT40U | IEEE80211_CHAN_HT40D) #define IEEE80211_CHAN_HT (IEEE80211_CHAN_HT20 | IEEE80211_CHAN_HT40) #define IEEE80211_CHAN_ALL \ (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \ IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN | \ IEEE80211_CHAN_HALF | IEEE80211_CHAN_QUARTER | \ IEEE80211_CHAN_HT) #define IEEE80211_CHAN_ALLTURBO \ (IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO) /* 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 /* frame failed FCS check */ /* For IEEE80211_RADIOTAP_RX_FLAGS */ #define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* bad PLCP */ /* 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 */ /* 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 #define IEEE80211_RADIOTAP_MCS_HAVE_NESS 0x40 #define IEEE80211_RADIOTAP_MCS_NESS_BIT1 0x80 #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_SHIFT 5 #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_NESS_BIT0 0x80 /* 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_VHT */ #define IEEE80211_RADIOTAP_VHT_HAVE_STBC 0x0001 #define IEEE80211_RADIOTAP_VHT_HAVE_TXOP_PS 0x0002 #define IEEE80211_RADIOTAP_VHT_HAVE_GI 0x0004 #define IEEE80211_RADIOTAP_VHT_HAVE_SGI_NSYM_DA 0x0008 #define IEEE80211_RADIOTAP_VHT_HAVE_LDPC_EXTRA 0x0010 #define IEEE80211_RADIOTAP_VHT_HAVE_BF 0x0020 #define IEEE80211_RADIOTAP_VHT_HAVE_BW 0x0040 #define IEEE80211_RADIOTAP_VHT_HAVE_GID 0x0080 #define IEEE80211_RADIOTAP_VHT_HAVE_PAID 0x0100 #define IEEE80211_RADIOTAP_VHT_STBC 0x01 #define IEEE80211_RADIOTAP_VHT_TXOP_PS 0x02 #define IEEE80211_RADIOTAP_VHT_SGI 0x04 #define IEEE80211_RADIOTAP_VHT_SGI_NSYM_DA 0x08 #define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA 0x10 #define IEEE80211_RADIOTAP_VHT_BF 0x20 #define IEEE80211_RADIOTAP_VHT_NSS 0x0f #define IEEE80211_RADIOTAP_VHT_MCS 0xf0 #define IEEE80211_RADIOTAP_VHT_CODING_LDPC 0x01 #define IEEE80211_RADIOTAP_VHT_BW_MASK 0x1f #define IEEE80211_RADIOTAP_VHT_BW_20 IEEE80211_RADIOTAP_MCS_BW_20 #define IEEE80211_RADIOTAP_VHT_BW_40 IEEE80211_RADIOTAP_MCS_BW_40 #define IEEE80211_RADIOTAP_VHT_BW_20L IEEE80211_RADIOTAP_MCS_BW_20L #define IEEE80211_RADIOTAP_VHT_BW_20U IEEE80211_RADIOTAP_MCS_BW_20U #define IEEE80211_RADIOTAP_VHT_BW_80 4 #define IEEE80211_RADIOTAP_VHT_BW_40L 5 #define IEEE80211_RADIOTAP_VHT_BW_40U 6 #define IEEE80211_RADIOTAP_VHT_BW_20LL 7 #define IEEE80211_RADIOTAP_VHT_BW_20LU 8 #define IEEE80211_RADIOTAP_VHT_BW_20UL 9 #define IEEE80211_RADIOTAP_VHT_BW_20UU 10 #define IEEE80211_RADIOTAP_VHT_BW_160 11 #define IEEE80211_RADIOTAP_VHT_BW_80L 12 #define IEEE80211_RADIOTAP_VHT_BW_80U 13 #define IEEE80211_RADIOTAP_VHT_BW_40LL 14 #define IEEE80211_RADIOTAP_VHT_BW_40LU 15 #define IEEE80211_RADIOTAP_VHT_BW_40UL 16 #define IEEE80211_RADIOTAP_VHT_BW_40UU 17 #define IEEE80211_RADIOTAP_VHT_BW_20LLL 18 #define IEEE80211_RADIOTAP_VHT_BW_20LLU 19 #define IEEE80211_RADIOTAP_VHT_BW_20LUL 20 #define IEEE80211_RADIOTAP_VHT_BW_20LUU 21 #define IEEE80211_RADIOTAP_VHT_BW_20ULL 22 #define IEEE80211_RADIOTAP_VHT_BW_20ULU 23 #define IEEE80211_RADIOTAP_VHT_BW_20UUL 24 #define IEEE80211_RADIOTAP_VHT_BW_20UUU 25 #endif /* IEEE80211_RADIOTAP_H */