[linux.git] / include / net / ieee80211_radiotap.h

/*
 * 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 ([email protected])
 */

#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 ieee80211_radiotap_header {
	u8 it_version;		/* Version 0. Only increases
				 * for drastic changes,
				 * introduction of compatible
				 * new fields does not count.
				 */
	u8 it_pad;
	__le16 it_len;		/* length of the whole
				 * header in bytes, including
				 * it_version, it_pad,
				 * it_len, and data fields.
				 */
	__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.
				 */
} __packed;

/* 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.
 *
 */
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_MCS = 19,

	/* valid in every it_present bitmap, even vendor namespaces */
	IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
	IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
	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) */

/* 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 */
#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_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_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


/* Ugly macro to convert literal channel numbers into their mhz equivalents
 * There are certianly some conditions that will break this (like feeding it '30')
 * but they shouldn't arise since nothing talks on channel 30. */
#define ieee80211chan2mhz(x) \
	(((x) <= 14) ? \
	(((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
	((x) + 1000) * 5)

/* helpers */
static inline int ieee80211_get_radiotap_len(unsigned char *data)
{
	struct ieee80211_radiotap_header *hdr =
		(struct ieee80211_radiotap_header *)data;

	return get_unaligned_le16(&hdr->it_len);
}

#endif				/* IEEE80211_RADIOTAP_H */
Commit	Line	Data
007e5ddd	1	/*
3905ec45 JK	2	* Copyright (c) 2003, 2004 David Young. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	* 3. The name of David Young may not be used to endorse or promote
	13	* products derived from this software without specific prior
	14	* written permission.
	15	*
	16	* THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
	17	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	18	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
	19	* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID
	20	* YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	21	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
	22	* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	24	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	25	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
	27	* OF SUCH DAMAGE.
	28	*/
	29
	30	/*
	31	* Modifications to fit into the linux IEEE 802.11 stack,
	32	* Mike Kershaw ([email protected])
	33	*/
	34
	35	#ifndef IEEE80211RADIOTAP_H
	36	#define IEEE80211RADIOTAP_H
	37
	38	#include <linux/if_ether.h>
	39	#include <linux/kernel.h>
dfe6e81d	40	#include <asm/unaligned.h>
3905ec45	41
3905ec45 JK	42	/* Base version of the radiotap packet header data */
	43	#define PKTHDR_RADIOTAP_VERSION 0
	44
	45	/* A generic radio capture format is desirable. There is one for
	46	* Linux, but it is neither rigidly defined (there were not even
	47	* units given for some fields) nor easily extensible.
	48	*
	49	* I suggest the following extensible radio capture format. It is
	50	* based on a bitmap indicating which fields are present.
	51	*
	52	* I am trying to describe precisely what the application programmer
	53	* should expect in the following, and for that reason I tell the
	54	* units and origin of each measurement (where it applies), or else I
	55	* use sufficiently weaselly language ("is a monotonically nondecreasing
	56	* function of...") that I cannot set false expectations for lawyerly
	57	* readers.
	58	*/
	59
007e5ddd JB	60	/*
007e5ddd JB	61	* The radio capture header precedes the 802.11 header.
a0d69f22 PR	62	* All data in the header is little endian on all platforms.
a0d69f22 PR	63	*/
3905ec45 JK	64	struct ieee80211_radiotap_header {
	65	u8 it_version; /* Version 0. Only increases
	66	* for drastic changes,
	67	* introduction of compatible
	68	* new fields does not count.
	69	*/
	70	u8 it_pad;
a0d69f22	71	__le16 it_len; /* length of the whole
3905ec45 JK	72	* header in bytes, including
	73	* it_version, it_pad,
	74	* it_len, and data fields.
	75	*/
a0d69f22	76	__le32 it_present; /* A bitmap telling which
3905ec45 JK	77	* fields are present. Set bit 31
	78	* (0x80000000) to extend the
	79	* bitmap by another 32 bits.
	80	* Additional extensions are made
	81	* by setting bit 31.
	82	*/
6a86b9c7	83	} __packed;
3905ec45	84
a0d69f22 PR	85	/* Name Data type Units
a0d69f22 PR	86	* ---- --------- -----
3905ec45	87	*
a0d69f22	88	* IEEE80211_RADIOTAP_TSFT __le64 microseconds
3905ec45 JK	89	*
	90	* Value in microseconds of the MAC's 64-bit 802.11 Time
	91	* Synchronization Function timer when the first bit of the
	92	* MPDU arrived at the MAC. For received frames, only.
	93	*
a0d69f22	94	* IEEE80211_RADIOTAP_CHANNEL 2 x __le16 MHz, bitmap
3905ec45 JK	95	*
	96	* Tx/Rx frequency in MHz, followed by flags (see below).
	97	*
a0d69f22	98	* IEEE80211_RADIOTAP_FHSS __le16 see below
3905ec45 JK	99	*
	100	* For frequency-hopping radios, the hop set (first byte)
	101	* and pattern (second byte).
	102	*
a0d69f22	103	* IEEE80211_RADIOTAP_RATE u8 500kb/s
3905ec45 JK	104	*
	105	* Tx/Rx data rate
	106	*
a0d69f22 PR	107	* IEEE80211_RADIOTAP_DBM_ANTSIGNAL s8 decibels from
a0d69f22 PR	108	* one milliwatt (dBm)
3905ec45 JK	109	*
	110	* RF signal power at the antenna, decibel difference from
	111	* one milliwatt.
	112	*
a0d69f22 PR	113	* IEEE80211_RADIOTAP_DBM_ANTNOISE s8 decibels from
a0d69f22 PR	114	* one milliwatt (dBm)
3905ec45 JK	115	*
	116	* RF noise power at the antenna, decibel difference from one
	117	* milliwatt.
	118	*
a0d69f22	119	* IEEE80211_RADIOTAP_DB_ANTSIGNAL u8 decibel (dB)
3905ec45 JK	120	*
	121	* RF signal power at the antenna, decibel difference from an
	122	* arbitrary, fixed reference.
	123	*
a0d69f22	124	* IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB)
3905ec45 JK	125	*
	126	* RF noise power at the antenna, decibel difference from an
	127	* arbitrary, fixed reference point.
	128	*
a0d69f22	129	* IEEE80211_RADIOTAP_LOCK_QUALITY __le16 unitless
3905ec45 JK	130	*
	131	* Quality of Barker code lock. Unitless. Monotonically
	132	* nondecreasing with "better" lock strength. Called "Signal
	133	* Quality" in datasheets. (Is there a standard way to measure
	134	* this?)
	135	*
a0d69f22	136	* IEEE80211_RADIOTAP_TX_ATTENUATION __le16 unitless
3905ec45 JK	137	*
	138	* Transmit power expressed as unitless distance from max
	139	* power set at factory calibration. 0 is max power.
	140	* Monotonically nondecreasing with lower power levels.
	141	*
a0d69f22	142	* IEEE80211_RADIOTAP_DB_TX_ATTENUATION __le16 decibels (dB)
3905ec45 JK	143	*
	144	* Transmit power expressed as decibel distance from max power
	145	* set at factory calibration. 0 is max power. Monotonically
	146	* nondecreasing with lower power levels.
	147	*
a0d69f22 PR	148	* IEEE80211_RADIOTAP_DBM_TX_POWER s8 decibels from
a0d69f22 PR	149	* one milliwatt (dBm)
3905ec45 JK	150	*
	151	* Transmit power expressed as dBm (decibels from a 1 milliwatt
	152	* reference). This is the absolute power level measured at
	153	* the antenna port.
	154	*
a0d69f22	155	* IEEE80211_RADIOTAP_FLAGS u8 bitmap
3905ec45 JK	156	*
	157	* Properties of transmitted and received frames. See flags
	158	* defined below.
	159	*
a0d69f22	160	* IEEE80211_RADIOTAP_ANTENNA u8 antenna index
3905ec45 JK	161	*
	162	* Unitless indication of the Rx/Tx antenna for this packet.
	163	* The first antenna is antenna 0.
	164	*
a0d69f22	165	* IEEE80211_RADIOTAP_RX_FLAGS __le16 bitmap
876c9d3a MT	166	*
	167	* Properties of received frames. See flags defined below.
	168	*
a0d69f22	169	* IEEE80211_RADIOTAP_TX_FLAGS __le16 bitmap
876c9d3a MT	170	*
	171	* Properties of transmitted frames. See flags defined below.
	172	*
a0d69f22	173	* IEEE80211_RADIOTAP_RTS_RETRIES u8 data
876c9d3a MT	174	*
	175	* Number of rts retries a transmitted frame used.
	176	*
a0d69f22	177	* IEEE80211_RADIOTAP_DATA_RETRIES u8 data
876c9d3a MT	178	*
	179	* Number of unicast retries a transmitted frame used.
	180	*
6d744bac JB	181	* IEEE80211_RADIOTAP_MCS u8, u8, u8 unitless
	182	*
	183	* Contains a bitmap of known fields/flags, the flags, and
	184	* the MCS index.
	185	*
3905ec45 JK	186	*/
	187	enum ieee80211_radiotap_type {
	188	IEEE80211_RADIOTAP_TSFT = 0,
	189	IEEE80211_RADIOTAP_FLAGS = 1,
	190	IEEE80211_RADIOTAP_RATE = 2,
	191	IEEE80211_RADIOTAP_CHANNEL = 3,
	192	IEEE80211_RADIOTAP_FHSS = 4,
	193	IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
	194	IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
	195	IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
	196	IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
	197	IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
	198	IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
	199	IEEE80211_RADIOTAP_ANTENNA = 11,
	200	IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
	201	IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
876c9d3a MT	202	IEEE80211_RADIOTAP_RX_FLAGS = 14,
	203	IEEE80211_RADIOTAP_TX_FLAGS = 15,
	204	IEEE80211_RADIOTAP_RTS_RETRIES = 16,
	205	IEEE80211_RADIOTAP_DATA_RETRIES = 17,
33e5a2f7	206
6d744bac JB	207	IEEE80211_RADIOTAP_MCS = 19,
6d744bac JB	208
33e5a2f7 JB	209	/* valid in every it_present bitmap, even vendor namespaces */
	210	IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
	211	IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
876c9d3a	212	IEEE80211_RADIOTAP_EXT = 31
3905ec45 JK	213	};
	214
	215	/* Channel flags. */
	216	#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */
	217	#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */
	218	#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */
	219	#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */
	220	#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */
	221	#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */
	222	#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */
	223	#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */
	224
	225	/* For IEEE80211_RADIOTAP_FLAGS */
	226	#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received
	227	* during CFP
	228	*/
	229	#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received
	230	* with short
	231	* preamble
	232	*/
	233	#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received
	234	* with WEP encryption
	235	*/
	236	#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received
	237	* with fragmentation
	238	*/
	239	#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */
	240	#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between
	241	* 802.11 header and payload
	242	* (to 32-bit boundary)
	243	*/
aae89831 JB	244	#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* bad FCS */
aae89831 JB	245
876c9d3a	246	/* For IEEE80211_RADIOTAP_RX_FLAGS */
aae89831	247	#define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* frame has bad PLCP */
876c9d3a MT	248
	249	/* For IEEE80211_RADIOTAP_TX_FLAGS */
	250	#define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive
	251	* retries */
	252	#define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */
	253	#define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */
893d73f4	254	#define IEEE80211_RADIOTAP_F_TX_NOACK 0x0008 /* don't expect an ack */
3905ec45	255
6d744bac JB	256
	257	/* For IEEE80211_RADIOTAP_MCS */
	258	#define IEEE80211_RADIOTAP_MCS_HAVE_BW 0x01
	259	#define IEEE80211_RADIOTAP_MCS_HAVE_MCS 0x02
	260	#define IEEE80211_RADIOTAP_MCS_HAVE_GI 0x04
	261	#define IEEE80211_RADIOTAP_MCS_HAVE_FMT 0x08
	262	#define IEEE80211_RADIOTAP_MCS_HAVE_FEC 0x10
	263
	264	#define IEEE80211_RADIOTAP_MCS_BW_MASK 0x03
	265	#define IEEE80211_RADIOTAP_MCS_BW_20 0
	266	#define IEEE80211_RADIOTAP_MCS_BW_40 1
	267	#define IEEE80211_RADIOTAP_MCS_BW_20L 2
	268	#define IEEE80211_RADIOTAP_MCS_BW_20U 3
	269	#define IEEE80211_RADIOTAP_MCS_SGI 0x04
	270	#define IEEE80211_RADIOTAP_MCS_FMT_GF 0x08
	271	#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10
	272
	273
3905ec45 JK	274	/* Ugly macro to convert literal channel numbers into their mhz equivalents
	275	* There are certianly some conditions that will break this (like feeding it '30')
	276	* but they shouldn't arise since nothing talks on channel 30. */
	277	#define ieee80211chan2mhz(x) \
	278	(((x) <= 14) ? \
	279	(((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
	280	((x) + 1000) * 5)
	281
571ecf67 JB	282	/* helpers */
	283	static inline int ieee80211_get_radiotap_len(unsigned char *data)
	284	{
	285	struct ieee80211_radiotap_header *hdr =
	286	(struct ieee80211_radiotap_header *)data;
	287
8b5ac31e	288	return get_unaligned_le16(&hdr->it_len);
571ecf67 JB	289	}
571ecf67 JB	290
3905ec45	291	#endif /* IEEE80211_RADIOTAP_H */