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authorJames Ketrenos <jketreno@linux.intel.com>2005-09-21 12:56:42 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-09-21 23:03:55 -0400
commit3905ec4561b7b049e9c2e27311d072c356dbdee2 (patch)
tree81a34fc3ce8f5bf8aa937023e23f90c7e2ed6760 /include/net
parent02cda6ae01814f58422c45259fb48136fbd7bcc1 (diff)
[PATCH] ieee80211: Added ieee80211_radiotap.h
tree 383c59b2516a61f2683f02dfebbed0caf6ee5dc3 parent a04948f63fd96c4b875a43f78afad1a0874cc441 author Mike Kershaw <dragorn@kismetwireless.net> 1124447833 -0500 committer James Ketrenos <jketreno@linux.intel.com> 1127313883 -0500 Added ieee80211_radiotap.h to enhance statistic reporting to user space from wireless drivers. Signed-off-by: Mike Kershaw <dragorn@kismetwireless.net> Signed-off-by: James Ketrenos <jketreno@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/ieee80211_radiotap.h231
1 files changed, 231 insertions, 0 deletions
diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
new file mode 100644
index 000000000000..429b73892a5f
--- /dev/null
+++ b/include/net/ieee80211_radiotap.h
@@ -0,0 +1,231 @@
1/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */
2/* $NetBSD: ieee80211_radiotap.h,v 1.11 2005/06/22 06:16:02 dyoung Exp $ */
3
4/*-
5 * Copyright (c) 2003, 2004 David Young. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of David Young may not be used to endorse or promote
16 * products derived from this software without specific prior
17 * written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY
20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID
23 * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
25 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30 * OF SUCH DAMAGE.
31 */
32
33/*
34 * Modifications to fit into the linux IEEE 802.11 stack,
35 * Mike Kershaw (dragorn@kismetwireless.net)
36 */
37
38#ifndef IEEE80211RADIOTAP_H
39#define IEEE80211RADIOTAP_H
40
41#include <linux/if_ether.h>
42#include <linux/kernel.h>
43
44/* Radiotap header version (from official NetBSD feed) */
45#define IEEE80211RADIOTAP_VERSION "1.5"
46/* Base version of the radiotap packet header data */
47#define PKTHDR_RADIOTAP_VERSION 0
48
49/* A generic radio capture format is desirable. There is one for
50 * Linux, but it is neither rigidly defined (there were not even
51 * units given for some fields) nor easily extensible.
52 *
53 * I suggest the following extensible radio capture format. It is
54 * based on a bitmap indicating which fields are present.
55 *
56 * I am trying to describe precisely what the application programmer
57 * should expect in the following, and for that reason I tell the
58 * units and origin of each measurement (where it applies), or else I
59 * use sufficiently weaselly language ("is a monotonically nondecreasing
60 * function of...") that I cannot set false expectations for lawyerly
61 * readers.
62 */
63
64/* XXX tcpdump/libpcap do not tolerate variable-length headers,
65 * yet, so we pad every radiotap header to 64 bytes. Ugh.
66 */
67#define IEEE80211_RADIOTAP_HDRLEN 64
68
69/* The radio capture header precedes the 802.11 header. */
70struct ieee80211_radiotap_header {
71 u8 it_version; /* Version 0. Only increases
72 * for drastic changes,
73 * introduction of compatible
74 * new fields does not count.
75 */
76 u8 it_pad;
77 u16 it_len; /* length of the whole
78 * header in bytes, including
79 * it_version, it_pad,
80 * it_len, and data fields.
81 */
82 u32 it_present; /* A bitmap telling which
83 * fields are present. Set bit 31
84 * (0x80000000) to extend the
85 * bitmap by another 32 bits.
86 * Additional extensions are made
87 * by setting bit 31.
88 */
89};
90
91/* Name Data type Units
92 * ---- --------- -----
93 *
94 * IEEE80211_RADIOTAP_TSFT u64 microseconds
95 *
96 * Value in microseconds of the MAC's 64-bit 802.11 Time
97 * Synchronization Function timer when the first bit of the
98 * MPDU arrived at the MAC. For received frames, only.
99 *
100 * IEEE80211_RADIOTAP_CHANNEL 2 x u16 MHz, bitmap
101 *
102 * Tx/Rx frequency in MHz, followed by flags (see below).
103 *
104 * IEEE80211_RADIOTAP_FHSS u16 see below
105 *
106 * For frequency-hopping radios, the hop set (first byte)
107 * and pattern (second byte).
108 *
109 * IEEE80211_RADIOTAP_RATE u8 500kb/s
110 *
111 * Tx/Rx data rate
112 *
113 * IEEE80211_RADIOTAP_DBM_ANTSIGNAL int8_t decibels from
114 * one milliwatt (dBm)
115 *
116 * RF signal power at the antenna, decibel difference from
117 * one milliwatt.
118 *
119 * IEEE80211_RADIOTAP_DBM_ANTNOISE int8_t decibels from
120 * one milliwatt (dBm)
121 *
122 * RF noise power at the antenna, decibel difference from one
123 * milliwatt.
124 *
125 * IEEE80211_RADIOTAP_DB_ANTSIGNAL u8 decibel (dB)
126 *
127 * RF signal power at the antenna, decibel difference from an
128 * arbitrary, fixed reference.
129 *
130 * IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB)
131 *
132 * RF noise power at the antenna, decibel difference from an
133 * arbitrary, fixed reference point.
134 *
135 * IEEE80211_RADIOTAP_LOCK_QUALITY u16 unitless
136 *
137 * Quality of Barker code lock. Unitless. Monotonically
138 * nondecreasing with "better" lock strength. Called "Signal
139 * Quality" in datasheets. (Is there a standard way to measure
140 * this?)
141 *
142 * IEEE80211_RADIOTAP_TX_ATTENUATION u16 unitless
143 *
144 * Transmit power expressed as unitless distance from max
145 * power set at factory calibration. 0 is max power.
146 * Monotonically nondecreasing with lower power levels.
147 *
148 * IEEE80211_RADIOTAP_DB_TX_ATTENUATION u16 decibels (dB)
149 *
150 * Transmit power expressed as decibel distance from max power
151 * set at factory calibration. 0 is max power. Monotonically
152 * nondecreasing with lower power levels.
153 *
154 * IEEE80211_RADIOTAP_DBM_TX_POWER int8_t decibels from
155 * one milliwatt (dBm)
156 *
157 * Transmit power expressed as dBm (decibels from a 1 milliwatt
158 * reference). This is the absolute power level measured at
159 * the antenna port.
160 *
161 * IEEE80211_RADIOTAP_FLAGS u8 bitmap
162 *
163 * Properties of transmitted and received frames. See flags
164 * defined below.
165 *
166 * IEEE80211_RADIOTAP_ANTENNA u8 antenna index
167 *
168 * Unitless indication of the Rx/Tx antenna for this packet.
169 * The first antenna is antenna 0.
170 *
171 * IEEE80211_RADIOTAP_FCS u32 data
172 *
173 * FCS from frame in network byte order.
174 */
175enum ieee80211_radiotap_type {
176 IEEE80211_RADIOTAP_TSFT = 0,
177 IEEE80211_RADIOTAP_FLAGS = 1,
178 IEEE80211_RADIOTAP_RATE = 2,
179 IEEE80211_RADIOTAP_CHANNEL = 3,
180 IEEE80211_RADIOTAP_FHSS = 4,
181 IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
182 IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
183 IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
184 IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
185 IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
186 IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
187 IEEE80211_RADIOTAP_ANTENNA = 11,
188 IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
189 IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
190 IEEE80211_RADIOTAP_EXT = 31,
191};
192
193/* Channel flags. */
194#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */
195#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */
196#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */
197#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */
198#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */
199#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */
200#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */
201#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */
202
203/* For IEEE80211_RADIOTAP_FLAGS */
204#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received
205 * during CFP
206 */
207#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received
208 * with short
209 * preamble
210 */
211#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received
212 * with WEP encryption
213 */
214#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received
215 * with fragmentation
216 */
217#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */
218#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between
219 * 802.11 header and payload
220 * (to 32-bit boundary)
221 */
222
223/* Ugly macro to convert literal channel numbers into their mhz equivalents
224 * There are certianly some conditions that will break this (like feeding it '30')
225 * but they shouldn't arise since nothing talks on channel 30. */
226#define ieee80211chan2mhz(x) \
227 (((x) <= 14) ? \
228 (((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
229 ((x) + 1000) * 5)
230
231#endif /* IEEE80211_RADIOTAP_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 11:41:57 -0500