release/src-rt-6.x.4708/include/proto/ieee80211_radiotap.h

   1 /* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.11 2007/12/13 01:23:40 sam Exp $ */
   2 /* $NetBSD: ieee80211_radiotap.h,v 1.16 2007/01/06 05:51:15 dyoung Exp $ */
   3 /* FILE-CSTYLED */
   4
   5 /*
   6  * Copyright (c) 2003, 2004 David Young.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of David Young may not be used to endorse or promote
  17  *    products derived from this software without specific prior
  18  *    written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
  21  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DAVID
  24  * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  26  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  28  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  31  * OF SUCH DAMAGE.
  32  */
  33 #ifndef _NET80211_IEEE80211_RADIOTAP_H_
  34 #define _NET80211_IEEE80211_RADIOTAP_H_
  35
  36 /* A generic radio capture format is desirable. It must be
  37  * rigidly defined (e.g., units for fields should be given),
  38  * and easily extensible.
  39  *
  40  * The following is an extensible radio capture format. It is
  41  * based on a bitmap indicating which fields are present.
  42  *
  43  * I am trying to describe precisely what the application programmer
  44  * should expect in the following, and for that reason I tell the
  45  * units and origin of each measurement (where it applies), or else I
  46  * use sufficiently weaselly language ("is a monotonically nondecreasing
  47  * function of...") that I cannot set false expectations for lawyerly
  48  * readers.
  49  */
  50 #if defined(__KERNEL__) || defined(_KERNEL)
  51 #ifndef DLT_IEEE802_11_RADIO
  52 #define DLT_IEEE802_11_RADIO    127     /* 802.11 plus WLAN header */
  53 #endif
  54 #endif /* defined(__KERNEL__) || defined(_KERNEL) */
  55
  56 #define IEEE80211_RADIOTAP_HDRLEN       64
  57
  58 /*
  59  * The radio capture header precedes the 802.11 header.
  60  *
  61  * Note well: all radiotap fields are little-endian.
  62  */
  63 struct ieee80211_radiotap_header {
  64         uint8_t         it_version;     /* Version 0. Only increases
  65                                          * for drastic changes,
  66                                          * introduction of compatible
  67                                          * new fields does not count.
  68                                          */
  69         uint8_t         it_pad;
  70         uint16_t        it_len;         /* length of the whole
  71                                          * header in bytes, including
  72                                          * it_version, it_pad,
  73                                          * it_len, and data fields.
  74                                          */
  75         uint32_t        it_present;     /* A bitmap telling which
  76                                          * fields are present. Set bit 31
  77                                          * (0x80000000) to extend the
  78                                          * bitmap by another 32 bits.
  79                                          * Additional extensions are made
  80                                          * by setting bit 31.
  81                                          */
  82 } __attribute__((packed));
  83
  84 /*
  85  * Name                                 Data type       Units
  86  * ----                                 ---------       -----
  87  *
  88  * IEEE80211_RADIOTAP_TSFT              uint64_t        microseconds
  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  *
  94  * IEEE80211_RADIOTAP_CHANNEL           2 x uint16_t    MHz, bitmap
  95  *
  96  *      Tx/Rx frequency in MHz, followed by flags (see below).
  97  *
  98  * IEEE80211_RADIOTAP_FHSS              uint16_t        see below
  99  *
 100  *      For frequency-hopping radios, the hop set (first byte)
 101  *      and pattern (second byte).
 102  *
 103  * IEEE80211_RADIOTAP_RATE              uint8_t         500kb/s or index
 104  *
 105  *      Tx/Rx data rate.  If bit 0x80 is set then it represents an
 106  *      an MCS index and not an IEEE rate.
 107  *
 108  * IEEE80211_RADIOTAP_DBM_ANTSIGNAL     int8_t          decibels from
 109  *                                                      one milliwatt (dBm)
 110  *
 111  *      RF signal power at the antenna, decibel difference from
 112  *      one milliwatt.
 113  *
 114  * IEEE80211_RADIOTAP_DBM_ANTNOISE      int8_t          decibels from
 115  *                                                      one milliwatt (dBm)
 116  *
 117  *      RF noise power at the antenna, decibel difference from one
 118  *      milliwatt.
 119  *
 120  * IEEE80211_RADIOTAP_DB_ANTSIGNAL      uint8_t         decibel (dB)
 121  *
 122  *      RF signal power at the antenna, decibel difference from an
 123  *      arbitrary, fixed reference.
 124  *
 125  * IEEE80211_RADIOTAP_DB_ANTNOISE       uint8_t         decibel (dB)
 126  *
 127  *      RF noise power at the antenna, decibel difference from an
 128  *      arbitrary, fixed reference point.
 129  *
 130  * IEEE80211_RADIOTAP_TXFLAGS           uint16_t        txflags
 131  *      Properties of Transmitted frames
 132  *
 133  * IEEE80211_RADIOTAP_RETRIES           uint8_t         retries
 134  *      Number of retries
 135  *
 136  * IEEE80211_RADIOTAP_LOCK_QUALITY      uint16_t        unitless
 137  *
 138  *      Quality of Barker code lock. Unitless. Monotonically
 139  *      nondecreasing with "better" lock strength. Called "Signal
 140  *      Quality" in datasheets.  (Is there a standard way to measure
 141  *      this?)
 142  *
 143  * IEEE80211_RADIOTAP_TX_ATTENUATION    uint16_t        unitless
 144  *
 145  *      Transmit power expressed as unitless distance from max
 146  *      power set at factory calibration.  0 is max power.
 147  *      Monotonically nondecreasing with lower power levels.
 148  *
 149  * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t        decibels (dB)
 150  *
 151  *      Transmit power expressed as decibel distance from max power
 152  *      set at factory calibration.  0 is max power.  Monotonically
 153  *      nondecreasing with lower power levels.
 154  *
 155  * IEEE80211_RADIOTAP_DBM_TX_POWER      int8_t          decibels from
 156  *                                                      one milliwatt (dBm)
 157  *
 158  *      Transmit power expressed as dBm (decibels from a 1 milliwatt
 159  *      reference). This is the absolute power level measured at
 160  *      the antenna port.
 161  *
 162  * IEEE80211_RADIOTAP_FLAGS             uint8_t         bitmap
 163  *
 164  *      Properties of transmitted and received frames. See flags
 165  *      defined below.
 166  *
 167  * IEEE80211_RADIOTAP_ANTENNA           uint8_t         antenna index
 168  *
 169  *      Unitless indication of the Rx/Tx antenna for this packet.
 170  *      The first antenna is antenna 0.
 171  *
 172  * IEEE80211_RADIOTAP_XCHANNEL          uint32_t        bitmap
 173  *                                      uint16_t        MHz
 174  *                                      uint8_t         channel number
 175  *                                      int8_t          .5 dBm
 176  *
 177  *      Extended channel specification: flags (see below) followed by
 178  *      frequency in MHz, the corresponding IEEE channel number, and
 179  *      finally the maximum regulatory transmit power cap in .5 dBm
 180  *      units.  This property supersedes IEEE80211_RADIOTAP_CHANNEL
 181  *      and only one of the two should be present.
 182  *
 183  * IEEE80211_RADIOTAP_MCS       u8, u8, u8              unitless
 184  *
 185  *     Contains a bitmap of known fields/flags, the flags, and
 186  *     the MCS index.
 187  *
 188  */
 189 enum ieee80211_radiotap_type {
 190         IEEE80211_RADIOTAP_TSFT = 0,
 191         IEEE80211_RADIOTAP_FLAGS = 1,
 192         IEEE80211_RADIOTAP_RATE = 2,
 193         IEEE80211_RADIOTAP_CHANNEL = 3,
 194         IEEE80211_RADIOTAP_FHSS = 4,
 195         IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
 196         IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
 197         IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
 198         IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
 199         IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
 200         IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
 201         IEEE80211_RADIOTAP_ANTENNA = 11,
 202         IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
 203         IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
 204         /* NB: gap for netbsd definitions */
 205         IEEE80211_RADIOTAP_TXFLAGS = 15,
 206         IEEE80211_RADIOTAP_RETRIES = 17,
 207         IEEE80211_RADIOTAP_XCHANNEL = 18,
 208         IEEE80211_RADIOTAP_MCS = 19,
 209         IEEE80211_RADIOTAP_AMPDU = 20,
 210         IEEE80211_RADIOTAP_VHT = 21,
 211         IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
 212         IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
 213         IEEE80211_RADIOTAP_EXT = 31,
 214         };
 215
 216 #ifndef _KERNEL
 217 /* channel attributes */
 218 #define IEEE80211_CHAN_TURBO    0x00000010 /* Turbo channel */
 219 #define IEEE80211_CHAN_CCK      0x00000020 /* CCK channel */
 220 #define IEEE80211_CHAN_OFDM     0x00000040 /* OFDM channel */
 221 #define IEEE80211_CHAN_2GHZ     0x00000080 /* 2 GHz spectrum channel. */
 222 #define IEEE80211_CHAN_5GHZ     0x00000100 /* 5 GHz spectrum channel */
 223 #define IEEE80211_CHAN_PASSIVE  0x00000200 /* Only passive scan allowed */
 224 #define IEEE80211_CHAN_DYN      0x00000400 /* Dynamic CCK-OFDM channel */
 225 #define IEEE80211_CHAN_GFSK     0x00000800 /* GFSK channel (FHSS PHY) */
 226 #define IEEE80211_CHAN_GSM      0x00001000 /* 900 MHz spectrum channel */
 227 #define IEEE80211_CHAN_STURBO   0x00002000 /* 11a static turbo channel only */
 228 #define IEEE80211_CHAN_HALF     0x00004000 /* Half rate channel */
 229 #define IEEE80211_CHAN_QUARTER  0x00008000 /* Quarter rate channel */
 230 #define IEEE80211_CHAN_HT20     0x00010000 /* HT 20 channel */
 231 #define IEEE80211_CHAN_HT40U    0x00020000 /* HT 40 channel w/ ext above */
 232 #define IEEE80211_CHAN_HT40D    0x00040000 /* HT 40 channel w/ ext below */
 233 #endif /* !_KERNEL */
 234
 235 /* For IEEE80211_RADIOTAP_FLAGS */
 236 #define IEEE80211_RADIOTAP_F_CFP        0x01    /* sent/received
 237                                                  * during CFP
 238                                                  */
 239 #define IEEE80211_RADIOTAP_F_SHORTPRE   0x02    /* sent/received
 240                                                  * with short
 241                                                  * preamble
 242                                                  */
 243 #define IEEE80211_RADIOTAP_F_WEP        0x04    /* sent/received
 244                                                  * with WEP encryption
 245                                                  */
 246 #define IEEE80211_RADIOTAP_F_FRAG       0x08    /* sent/received
 247                                                  * with fragmentation
 248                                                  */
 249 #define IEEE80211_RADIOTAP_F_FCS        0x10    /* frame includes FCS */
 250 #define IEEE80211_RADIOTAP_F_DATAPAD    0x20    /* frame has padding between
 251                                                  * 802.11 header and payload
 252                                                  * (to 32-bit boundary)
 253                                                  */
 254 #define IEEE80211_RADIOTAP_F_BADFCS     0x40    /* does not pass FCS check */
 255
 256 /* For IEEE80211_RADIOTAP_MCS */
 257 #define IEEE80211_RADIOTAP_MCS_HAVE_BW          0x01
 258 #define IEEE80211_RADIOTAP_MCS_HAVE_MCS         0x02
 259 #define IEEE80211_RADIOTAP_MCS_HAVE_GI          0x04
 260 #define IEEE80211_RADIOTAP_MCS_HAVE_FMT         0x08
 261 #define IEEE80211_RADIOTAP_MCS_HAVE_FEC         0x10
 262
 263 #define IEEE80211_RADIOTAP_MCS_BW_MASK          0x03
 264 #define IEEE80211_RADIOTAP_MCS_BW_20            0
 265 #define IEEE80211_RADIOTAP_MCS_BW_40            1
 266 #define IEEE80211_RADIOTAP_MCS_BW_20L           2
 267 #define IEEE80211_RADIOTAP_MCS_BW_20U           3
 268 #define IEEE80211_RADIOTAP_MCS_SGI              0x04
 269 #define IEEE80211_RADIOTAP_MCS_FMT_GF           0x08
 270 #define IEEE80211_RADIOTAP_MCS_FEC_LDPC         0x10
 271
 272 #define IEEE80211_RADIOTAP_MCS_BW_80            0x20
 273 #define IEEE80211_RADIOTAP_MCS_BW_20LL          0x40
 274 #define IEEE80211_RADIOTAP_MCS_BW_20LU          0x60
 275 #define IEEE80211_RADIOTAP_MCS_BW_20UL          0x80
 276 #define IEEE80211_RADIOTAP_MCS_BW_20UU          0xa0
 277 #define IEEE80211_RADIOTAP_MCS_BW_40L           0xc0
 278 #define IEEE80211_RADIOTAP_MCS_BW_40U           0xe0
 279
 280 /* For IEEE80211_RADIOTAP_VHT */
 281 #define IEEE80211_RADIOTAP_VHT_HAVE_STBC        0x0001
 282 #define IEEE80211_RADIOTAP_VHT_HAVE_TXOP_PS     0x0002
 283 #define IEEE80211_RADIOTAP_VHT_HAVE_GI          0x0004
 284 #define IEEE80211_RADIOTAP_VHT_HAVE_SGI_NSYM_DA 0x0008
 285 #define IEEE80211_RADIOTAP_VHT_HAVE_LDPC_EXTRA  0x0010
 286 #define IEEE80211_RADIOTAP_VHT_HAVE_BF          0x0020
 287 #define IEEE80211_RADIOTAP_VHT_HAVE_BW          0x0040
 288 #define IEEE80211_RADIOTAP_VHT_HAVE_GID         0x0080
 289 #define IEEE80211_RADIOTAP_VHT_HAVE_PAID        0x0100
 290
 291 #define IEEE80211_RADIOTAP_VHT_STBC             0x01
 292 #define IEEE80211_RADIOTAP_VHT_TXOP_PS          0x02
 293 #define IEEE80211_RADIOTAP_VHT_SGI              0x04
 294 #define IEEE80211_RADIOTAP_VHT_SGI_NSYM_DA      0x08
 295 #define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA       0x10
 296 #define IEEE80211_RADIOTAP_VHT_BF               0x20
 297
 298 #define IEEE80211_RADIOTAP_VHT_NSS              0x0f
 299 #define IEEE80211_RADIOTAP_VHT_MCS              0xf0
 300
 301 #define IEEE80211_RADIOTAP_VHT_CODING_LDPC      0x01
 302
 303 #define IEEE80211_RADIOTAP_VHT_BW_20            IEEE80211_RADIOTAP_MCS_BW_20
 304 #define IEEE80211_RADIOTAP_VHT_BW_40            IEEE80211_RADIOTAP_MCS_BW_40
 305 #define IEEE80211_RADIOTAP_VHT_BW_20L           IEEE80211_RADIOTAP_MCS_BW_20L
 306 #define IEEE80211_RADIOTAP_VHT_BW_20U           IEEE80211_RADIOTAP_MCS_BW_20U
 307 #define IEEE80211_RADIOTAP_VHT_BW_80            4
 308 #define IEEE80211_RADIOTAP_VHT_BW_40L           5
 309 #define IEEE80211_RADIOTAP_VHT_BW_40U           6
 310 #define IEEE80211_RADIOTAP_VHT_BW_20LL          7
 311 #define IEEE80211_RADIOTAP_VHT_BW_20LU          8
 312 #define IEEE80211_RADIOTAP_VHT_BW_20UL          9
 313 #define IEEE80211_RADIOTAP_VHT_BW_20UU          10
 314 #define IEEE80211_RADIOTAP_VHT_BW_160           11
 315 #define IEEE80211_RADIOTAP_VHT_BW_80L           12
 316 #define IEEE80211_RADIOTAP_VHT_BW_80U           13
 317 #define IEEE80211_RADIOTAP_VHT_BW_40LL          14
 318 #define IEEE80211_RADIOTAP_VHT_BW_40LU          15
 319 #define IEEE80211_RADIOTAP_VHT_BW_40UL          16
 320 #define IEEE80211_RADIOTAP_VHT_BW_40UU          17
 321 #define IEEE80211_RADIOTAP_VHT_BW_20LLL         18
 322 #define IEEE80211_RADIOTAP_VHT_BW_20LLU         19
 323 #define IEEE80211_RADIOTAP_VHT_BW_20LUL         20
 324 #define IEEE80211_RADIOTAP_VHT_BW_20LUU         21
 325 #define IEEE80211_RADIOTAP_VHT_BW_20ULL         22
 326 #define IEEE80211_RADIOTAP_VHT_BW_20ULU         23
 327 #define IEEE80211_RADIOTAP_VHT_BW_20UUL         24
 328 #define IEEE80211_RADIOTAP_VHT_BW_20UUU         25
 329
 330 /* For IEEE80211_RADIOTAP_TXFLAGS */
 331 #define IEEE80211_RADIOTAP_TXF_FAIL     0x0001  /* TX failed due to excessive retries */
 332 #define IEEE80211_RADIOTAP_TXF_CTS      0x0002  /* TX used CTS-to-self protection */
 333 #define IEEE80211_RADIOTAP_TXF_RTSCTS   0x0004  /* TX used RTS/CTS */
 334 #define IEEE80211_RADIOTAP_TXF_NOACK    0x0008  /* For injected TX: don't expect ACK */
 335 #define IEEE80211_RADIOTAP_TXF_SEQOVR   0x0010  /* For injected TX: use pre-configured seq */
 336
 337
 338 /* For IEEE80211_RADIOTAP_AMPDU_STATUS */
 339 #define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN         0x0001
 340 #define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN             0x0002
 341 #define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN             0x0004
 342 #define IEEE80211_RADIOTAP_AMPDU_IS_LAST                0x0008
 343 #define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR          0x0010
 344 #define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN        0x0020
 345
 346
 347
 348 #endif /* !_NET80211_IEEE80211_RADIOTAP_H_ */