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author | David Brodski <david@brodski.eu> | 2010-09-05 05:57:58 +0000 |
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committer | David Brodski <david@brodski.eu> | 2010-09-05 05:57:58 +0000 |
commit | 89de3fe552fcf8206e6981fc81cc179c97e5ac65 (patch) | |
tree | c64b2be6e3d7de0a720ab90453cdf35a07f89411 /src/transport/ieee80211_radiotap.h | |
parent | d6498d0f807edde6e6f667e635c1454de0109247 (diff) | |
download | gnunet-89de3fe552fcf8206e6981fc81cc179c97e5ac65.tar.gz gnunet-89de3fe552fcf8206e6981fc81cc179c97e5ac65.zip |
Some changes and new files.
I will not have internet till 7. September so if there are errors just revert the changes.
Diffstat (limited to 'src/transport/ieee80211_radiotap.h')
-rw-r--r-- | src/transport/ieee80211_radiotap.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/src/transport/ieee80211_radiotap.h b/src/transport/ieee80211_radiotap.h new file mode 100644 index 000000000..bfcc2180c --- /dev/null +++ b/src/transport/ieee80211_radiotap.h | |||
@@ -0,0 +1,265 @@ | |||
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 | 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; | ||
71 | __le16 it_len; /* length of the whole | ||
72 | * header in bytes, including | ||
73 | * it_version, it_pad, | ||
74 | * it_len, and data fields. | ||
75 | */ | ||
76 | __le32 it_present; /* A bitmap telling which | ||
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 | */ | ||
83 | } __packed; | ||
84 | |||
85 | /* Name Data type Units | ||
86 | * ---- --------- ----- | ||
87 | * | ||
88 | * IEEE80211_RADIOTAP_TSFT __le64 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 __le16 MHz, bitmap | ||
95 | * | ||
96 | * Tx/Rx frequency in MHz, followed by flags (see below). | ||
97 | * | ||
98 | * IEEE80211_RADIOTAP_FHSS __le16 see below | ||
99 | * | ||
100 | * For frequency-hopping radios, the hop set (first byte) | ||
101 | * and pattern (second byte). | ||
102 | * | ||
103 | * IEEE80211_RADIOTAP_RATE u8 500kb/s | ||
104 | * | ||
105 | * Tx/Rx data rate | ||
106 | * | ||
107 | * IEEE80211_RADIOTAP_DBM_ANTSIGNAL s8 decibels from | ||
108 | * one milliwatt (dBm) | ||
109 | * | ||
110 | * RF signal power at the antenna, decibel difference from | ||
111 | * one milliwatt. | ||
112 | * | ||
113 | * IEEE80211_RADIOTAP_DBM_ANTNOISE s8 decibels from | ||
114 | * one milliwatt (dBm) | ||
115 | * | ||
116 | * RF noise power at the antenna, decibel difference from one | ||
117 | * milliwatt. | ||
118 | * | ||
119 | * IEEE80211_RADIOTAP_DB_ANTSIGNAL u8 decibel (dB) | ||
120 | * | ||
121 | * RF signal power at the antenna, decibel difference from an | ||
122 | * arbitrary, fixed reference. | ||
123 | * | ||
124 | * IEEE80211_RADIOTAP_DB_ANTNOISE u8 decibel (dB) | ||
125 | * | ||
126 | * RF noise power at the antenna, decibel difference from an | ||
127 | * arbitrary, fixed reference point. | ||
128 | * | ||
129 | * IEEE80211_RADIOTAP_LOCK_QUALITY __le16 unitless | ||
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 | * | ||
136 | * IEEE80211_RADIOTAP_TX_ATTENUATION __le16 unitless | ||
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 | * | ||
142 | * IEEE80211_RADIOTAP_DB_TX_ATTENUATION __le16 decibels (dB) | ||
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 | * | ||
148 | * IEEE80211_RADIOTAP_DBM_TX_POWER s8 decibels from | ||
149 | * one milliwatt (dBm) | ||
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 | * | ||
155 | * IEEE80211_RADIOTAP_FLAGS u8 bitmap | ||
156 | * | ||
157 | * Properties of transmitted and received frames. See flags | ||
158 | * defined below. | ||
159 | * | ||
160 | * IEEE80211_RADIOTAP_ANTENNA u8 antenna index | ||
161 | * | ||
162 | * Unitless indication of the Rx/Tx antenna for this packet. | ||
163 | * The first antenna is antenna 0. | ||
164 | * | ||
165 | * IEEE80211_RADIOTAP_RX_FLAGS __le16 bitmap | ||
166 | * | ||
167 | * Properties of received frames. See flags defined below. | ||
168 | * | ||
169 | * IEEE80211_RADIOTAP_TX_FLAGS __le16 bitmap | ||
170 | * | ||
171 | * Properties of transmitted frames. See flags defined below. | ||
172 | * | ||
173 | * IEEE80211_RADIOTAP_RTS_RETRIES u8 data | ||
174 | * | ||
175 | * Number of rts retries a transmitted frame used. | ||
176 | * | ||
177 | * IEEE80211_RADIOTAP_DATA_RETRIES u8 data | ||
178 | * | ||
179 | * Number of unicast retries a transmitted frame used. | ||
180 | * | ||
181 | */ | ||
182 | enum ieee80211_radiotap_type { | ||
183 | IEEE80211_RADIOTAP_TSFT = 0, | ||
184 | IEEE80211_RADIOTAP_FLAGS = 1, | ||
185 | IEEE80211_RADIOTAP_RATE = 2, | ||
186 | IEEE80211_RADIOTAP_CHANNEL = 3, | ||
187 | IEEE80211_RADIOTAP_FHSS = 4, | ||
188 | IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, | ||
189 | IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, | ||
190 | IEEE80211_RADIOTAP_LOCK_QUALITY = 7, | ||
191 | IEEE80211_RADIOTAP_TX_ATTENUATION = 8, | ||
192 | IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, | ||
193 | IEEE80211_RADIOTAP_DBM_TX_POWER = 10, | ||
194 | IEEE80211_RADIOTAP_ANTENNA = 11, | ||
195 | IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, | ||
196 | IEEE80211_RADIOTAP_DB_ANTNOISE = 13, | ||
197 | IEEE80211_RADIOTAP_RX_FLAGS = 14, | ||
198 | IEEE80211_RADIOTAP_TX_FLAGS = 15, | ||
199 | IEEE80211_RADIOTAP_RTS_RETRIES = 16, | ||
200 | IEEE80211_RADIOTAP_DATA_RETRIES = 17, | ||
201 | |||
202 | /* valid in every it_present bitmap, even vendor namespaces */ | ||
203 | IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29, | ||
204 | IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, | ||
205 | IEEE80211_RADIOTAP_EXT = 31 | ||
206 | }; | ||
207 | |||
208 | /* Channel flags. */ | ||
209 | #define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */ | ||
210 | #define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */ | ||
211 | #define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */ | ||
212 | #define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */ | ||
213 | #define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */ | ||
214 | #define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */ | ||
215 | #define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */ | ||
216 | #define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */ | ||
217 | |||
218 | /* For IEEE80211_RADIOTAP_FLAGS */ | ||
219 | #define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received | ||
220 | * during CFP | ||
221 | */ | ||
222 | #define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received | ||
223 | * with short | ||
224 | * preamble | ||
225 | */ | ||
226 | #define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received | ||
227 | * with WEP encryption | ||
228 | */ | ||
229 | #define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received | ||
230 | * with fragmentation | ||
231 | */ | ||
232 | #define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ | ||
233 | #define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between | ||
234 | * 802.11 header and payload | ||
235 | * (to 32-bit boundary) | ||
236 | */ | ||
237 | #define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* bad FCS */ | ||
238 | |||
239 | /* For IEEE80211_RADIOTAP_RX_FLAGS */ | ||
240 | #define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* frame has bad PLCP */ | ||
241 | |||
242 | /* For IEEE80211_RADIOTAP_TX_FLAGS */ | ||
243 | #define IEEE80211_RADIOTAP_F_TX_FAIL 0x0001 /* failed due to excessive | ||
244 | * retries */ | ||
245 | #define IEEE80211_RADIOTAP_F_TX_CTS 0x0002 /* used cts 'protection' */ | ||
246 | #define IEEE80211_RADIOTAP_F_TX_RTS 0x0004 /* used rts/cts handshake */ | ||
247 | |||
248 | /* Ugly macro to convert literal channel numbers into their mhz equivalents | ||
249 | * There are certianly some conditions that will break this (like feeding it '30') | ||
250 | * but they shouldn't arise since nothing talks on channel 30. */ | ||
251 | #define ieee80211chan2mhz(x) \ | ||
252 | (((x) <= 14) ? \ | ||
253 | (((x) == 14) ? 2484 : ((x) * 5) + 2407) : \ | ||
254 | ((x) + 1000) * 5) | ||
255 | |||
256 | /* helpers */ | ||
257 | static inline int ieee80211_get_radiotap_len(unsigned char *data) | ||
258 | { | ||
259 | struct ieee80211_radiotap_header *hdr = | ||
260 | (struct ieee80211_radiotap_header *)data; | ||
261 | |||
262 | return get_unaligned_le16(&hdr->it_len); | ||
263 | } | ||
264 | |||
265 | #endif /* IEEE80211_RADIOTAP_H */ | ||