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Diffstat (limited to 'src/transport/ieee80211_radiotap.h')
-rw-r--r-- | src/transport/ieee80211_radiotap.h | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/src/transport/ieee80211_radiotap.h b/src/transport/ieee80211_radiotap.h deleted file mode 100644 index 9351da9a5..000000000 --- a/src/transport/ieee80211_radiotap.h +++ /dev/null | |||
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1 | /* | ||
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 (dragorn@kismetwireless.net) | ||
33 | */ | ||
34 | |||
35 | #ifndef IEEE80211RADIOTAP_H | ||
36 | #define IEEE80211RADIOTAP_H | ||
37 | |||
38 | #include <linux/if_ether.h> | ||
39 | #include <linux/kernel.h> | ||
40 | // #include <asm/unaligned.h> | ||
41 | |||
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 | |||
60 | /* | ||
61 | * The radio capture header precedes the 802.11 header. | ||
62 | * All data in the header is little endian on all platforms. | ||
63 | */ | ||
64 | struct ieee80211_radiotap_header | ||
65 | { | ||
66 | u8 it_version; /* Version 0. Only increases | ||
67 | * for drastic changes, | ||
68 | * introduction of compatible | ||
69 | * new fields does not count. | ||
70 | */ | ||
71 | u8 it_pad; | ||
72 | __le16 it_len; /* length of the whole | ||
73 | * header in bytes, including | ||
74 | * it_version, it_pad, | ||
75 | * it_len, and data fields. | ||
76 | */ | ||
77 | __le32 it_present; /* A bitmap telling which | ||
78 | * fields are present. Set bit 31 | ||
79 | * (0x80000000) to extend the | ||
80 | * bitmap by another 32 bits. | ||
81 | * Additional extensions are made | ||
82 | * by setting bit 31. | ||
83 | */ | ||
84 | } __packed; | ||
85 | |||
86 | /* Name Data type Units | ||
87 | * ---- --------- ----- | ||
88 | * | ||
89 | * IEEE80211_RADIOTAP_TSFT __le64 microseconds | ||
90 | * | ||
91 | * Value in microseconds of the MAC's 64-bit 802.11 Time | ||
92 | * Synchronization Function timer when the first bit of the | ||
93 | * MPDU arrived at the MAC. For received frames, only. | ||
94 | * | ||
95 | * IEEE80211_RADIOTAP_CHANNEL 2 x __le16 MHz, bitmap | ||
96 | * | ||
97 | * Tx/Rx frequency in MHz, followed by flags (see below). | ||
98 | * | ||
99 | * IEEE80211_RADIOTAP_FHSS __le16 see below | ||
100 | * | ||
101 | * For frequency-hopping radios, the hop set (first byte) | ||
102 | * and pattern (second byte). | ||
103 | * | ||
104 | * IEEE80211_RADIOTAP_RATE u8 500kb/s | ||
105 | * | ||
106 | * Tx/Rx data rate | ||
107 | * | ||
108 | * IEEE80211_RADIOTAP_DBM_ANTSIGNAL s8 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 s8 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 u8 decibel (dB) | ||
121 | * | ||
122 | * RF signal power at the antenna, decibel difference from an | ||
123 | * arbitrary, fixed reference. | ||
124 | * | ||
125 | * IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB) | ||
126 | * | ||
127 | * RF noise power at the antenna, decibel difference from an | ||
128 | * arbitrary, fixed reference point. | ||
129 | * | ||
130 | * IEEE80211_RADIOTAP_LOCK_QUALITY __le16 unitless | ||
131 | * | ||
132 | * Quality of Barker code lock. Unitless. Monotonically | ||
133 | * nondecreasing with "better" lock strength. Called "Signal | ||
134 | * Quality" in datasheets. (Is there a standard way to measure | ||
135 | * this?) | ||
136 | * | ||
137 | * IEEE80211_RADIOTAP_TX_ATTENUATION __le16 unitless | ||
138 | * | ||
139 | * Transmit power expressed as unitless distance from max | ||
140 | * power set at factory calibration. 0 is max power. | ||
141 | * Monotonically nondecreasing with lower power levels. | ||
142 | * | ||
143 | * IEEE80211_RADIOTAP_DB_TX_ATTENUATION __le16 decibels (dB) | ||
144 | * | ||
145 | * Transmit power expressed as decibel distance from max power | ||
146 | * set at factory calibration. 0 is max power. Monotonically | ||
147 | * nondecreasing with lower power levels. | ||
148 | * | ||
149 | * IEEE80211_RADIOTAP_DBM_TX_POWER s8 decibels from | ||
150 | * one milliwatt (dBm) | ||
151 | * | ||
152 | * Transmit power expressed as dBm (decibels from a 1 milliwatt | ||
153 | * reference). This is the absolute power level measured at | ||
154 | * the antenna port. | ||
155 | * | ||
156 | * IEEE80211_RADIOTAP_FLAGS u8 bitmap | ||
157 | * | ||
158 | * Properties of transmitted and received frames. See flags | ||
159 | * defined below. | ||
160 | * | ||
161 | * IEEE80211_RADIOTAP_ANTENNA u8 antenna index | ||
162 | * | ||
163 | * Unitless indication of the Rx/Tx antenna for this packet. | ||
164 | * The first antenna is antenna 0. | ||
165 | * | ||
166 | * IEEE80211_RADIOTAP_RX_FLAGS __le16 bitmap | ||
167 | * | ||
168 | * Properties of received frames. See flags defined below. | ||
169 | * | ||
170 | * IEEE80211_RADIOTAP_TX_FLAGS __le16 bitmap | ||
171 | * | ||
172 | * Properties of transmitted frames. See flags defined below. | ||
173 | * | ||
174 | * IEEE80211_RADIOTAP_RTS_RETRIES u8 data | ||
175 | * | ||
176 | * Number of rts retries a transmitted frame used. | ||
177 | * | ||
178 | * IEEE80211_RADIOTAP_DATA_RETRIES u8 data | ||
179 | * | ||
180 | * Number of unicast retries a transmitted frame used. | ||
181 | * | ||
182 | */ | ||
183 | enum ieee80211_radiotap_type | ||
184 | { | ||
185 | IEEE80211_RADIOTAP_TSFT = 0, | ||
186 | IEEE80211_RADIOTAP_FLAGS = 1, | ||
187 | IEEE80211_RADIOTAP_RATE = 2, | ||
188 | IEEE80211_RADIOTAP_CHANNEL = 3, | ||
189 | IEEE80211_RADIOTAP_FHSS = 4, | ||
190 | IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, | ||
191 | IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, | ||
192 | IEEE80211_RADIOTAP_LOCK_QUALITY = 7, | ||
193 | IEEE80211_RADIOTAP_TX_ATTENUATION = 8, | ||
194 | IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, | ||
195 | IEEE80211_RADIOTAP_DBM_TX_POWER = 10, | ||
196 | IEEE80211_RADIOTAP_ANTENNA = 11, | ||
197 | IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, | ||
198 | IEEE80211_RADIOTAP_DB_ANTNOISE = 13, | ||
199 | IEEE80211_RADIOTAP_RX_FLAGS = 14, | ||
200 | IEEE80211_RADIOTAP_TX_FLAGS = 15, | ||
201 | IEEE80211_RADIOTAP_RTS_RETRIES = 16, | ||
202 | IEEE80211_RADIOTAP_DATA_RETRIES = 17, | ||
203 | |||
204 | /* valid in every it_present bitmap, even vendor namespaces */ | ||
205 | IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29, | ||
206 | IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, | ||
207 | IEEE80211_RADIOTAP_EXT = 31 | ||
208 | }; | ||
209 | |||
210 | /* Channel flags. */ | ||
211 | #define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */ | ||
212 | #define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */ | ||
213 | #define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */ | ||
214 | #define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */ | ||
215 | #define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */ | ||
216 | #define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */ | ||
217 | #define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */ | ||
218 | #define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */ | ||
219 | |||
220 | /* For IEEE80211_RADIOTAP_FLAGS */ | ||
221 | #define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received | ||
222 | * during CFP | ||
223 | */ | ||
224 | #define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received | ||
225 | * with short | ||
226 | * preamble | ||
227 | */ | ||
228 | #define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received | ||
229 | * with WEP encryption | ||
230 | */ | ||
231 | #define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received | ||
232 | * with fragmentation | ||
233 | */ | ||
234 | #define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ | ||
235 | #define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between | ||
236 | * 802.11 header and payload | ||
237 | * (to 32-bit boundary) | ||
238 | */ | ||
239 | #define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* bad FCS */ | ||
240 | |||
241 | /* For IEEE80211_RADIOTAP_RX_FLAGS */ | ||
242 | #define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* frame has bad PLCP */ | ||
243 | |||
244 | /* For IEEE80211_RADIOTAP_TX_FLAGS */ | ||
245 | #define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive | ||
246 | * retries */ | ||
247 | #define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */ | ||
248 | #define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */ | ||
249 | |||
250 | /* Ugly macro to convert literal channel numbers into their mhz equivalents | ||
251 | * There are certainly some conditions that will break this (like feeding it '30') | ||
252 | * but they shouldn't arise since nothing talks on channel 30. */ | ||
253 | #define ieee80211chan2mhz(x) \ | ||
254 | (((x) <= 14) ? \ | ||
255 | (((x) == 14) ? 2484 : ((x) * 5) + 2407) : \ | ||
256 | ((x) + 1000) * 5) | ||
257 | |||
258 | /* helpers */ | ||
259 | static inline u16 | ||
260 | get_unaligned_le16 (const u8 *p) | ||
261 | { | ||
262 | return p[0] | p[1] << 8; | ||
263 | } | ||
264 | |||
265 | |||
266 | static inline int | ||
267 | ieee80211_get_radiotap_len (unsigned char *data) | ||
268 | { | ||
269 | struct ieee80211_radiotap_header *hdr = | ||
270 | (struct ieee80211_radiotap_header *) data; | ||
271 | |||
272 | return get_unaligned_le16 ((const u8 *) &hdr->it_len); | ||
273 | } | ||
274 | |||
275 | |||
276 | #endif /* IEEE80211_RADIOTAP_H */ | ||