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1/*
2 * Copyright (c) 2017 Intel Deutschland GmbH
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16#ifndef __RADIOTAP_H
17#define __RADIOTAP_H
18
19#include <linux/kernel.h>
20#include <asm/unaligned.h>
21
22/**
23 * struct ieee82011_radiotap_header - base radiotap header
24 */
25struct ieee80211_radiotap_header {
26 /**
27 * @it_version: radiotap version, always 0
28 */
29 uint8_t it_version;
30
31 /**
32 * @it_pad: padding (or alignment)
33 */
34 uint8_t it_pad;
35
36 /**
37 * @it_len: overall radiotap header length
38 */
39 __le16 it_len;
40
41 /**
42 * @it_present: (first) present word
43 */
44 __le32 it_present;
45} __packed;
46
47/* version is always 0 */
48#define PKTHDR_RADIOTAP_VERSION 0
49
50/* see the radiotap website for the descriptions */
51enum ieee80211_radiotap_presence {
52 IEEE80211_RADIOTAP_TSFT = 0,
53 IEEE80211_RADIOTAP_FLAGS = 1,
54 IEEE80211_RADIOTAP_RATE = 2,
55 IEEE80211_RADIOTAP_CHANNEL = 3,
56 IEEE80211_RADIOTAP_FHSS = 4,
57 IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5,
58 IEEE80211_RADIOTAP_DBM_ANTNOISE = 6,
59 IEEE80211_RADIOTAP_LOCK_QUALITY = 7,
60 IEEE80211_RADIOTAP_TX_ATTENUATION = 8,
61 IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9,
62 IEEE80211_RADIOTAP_DBM_TX_POWER = 10,
63 IEEE80211_RADIOTAP_ANTENNA = 11,
64 IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12,
65 IEEE80211_RADIOTAP_DB_ANTNOISE = 13,
66 IEEE80211_RADIOTAP_RX_FLAGS = 14,
67 IEEE80211_RADIOTAP_TX_FLAGS = 15,
68 IEEE80211_RADIOTAP_RTS_RETRIES = 16,
69 IEEE80211_RADIOTAP_DATA_RETRIES = 17,
70 /* 18 is XChannel, but it's not defined yet */
71 IEEE80211_RADIOTAP_MCS = 19,
72 IEEE80211_RADIOTAP_AMPDU_STATUS = 20,
73 IEEE80211_RADIOTAP_VHT = 21,
74 IEEE80211_RADIOTAP_TIMESTAMP = 22,
75
76 /* valid in every it_present bitmap, even vendor namespaces */
77 IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
78 IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
79 IEEE80211_RADIOTAP_EXT = 31
80};
81
82/* for IEEE80211_RADIOTAP_FLAGS */
83enum ieee80211_radiotap_flags {
84 IEEE80211_RADIOTAP_F_CFP = 0x01,
85 IEEE80211_RADIOTAP_F_SHORTPRE = 0x02,
86 IEEE80211_RADIOTAP_F_WEP = 0x04,
87 IEEE80211_RADIOTAP_F_FRAG = 0x08,
88 IEEE80211_RADIOTAP_F_FCS = 0x10,
89 IEEE80211_RADIOTAP_F_DATAPAD = 0x20,
90 IEEE80211_RADIOTAP_F_BADFCS = 0x40,
91};
92
93/* for IEEE80211_RADIOTAP_CHANNEL */
94enum ieee80211_radiotap_channel_flags {
95 IEEE80211_CHAN_CCK = 0x0020,
96 IEEE80211_CHAN_OFDM = 0x0040,
97 IEEE80211_CHAN_2GHZ = 0x0080,
98 IEEE80211_CHAN_5GHZ = 0x0100,
99 IEEE80211_CHAN_DYN = 0x0400,
100 IEEE80211_CHAN_HALF = 0x4000,
101 IEEE80211_CHAN_QUARTER = 0x8000,
102};
103
104/* for IEEE80211_RADIOTAP_RX_FLAGS */
105enum ieee80211_radiotap_rx_flags {
106 IEEE80211_RADIOTAP_F_RX_BADPLCP = 0x0002,
107};
108
109/* for IEEE80211_RADIOTAP_TX_FLAGS */
110enum ieee80211_radiotap_tx_flags {
111 IEEE80211_RADIOTAP_F_TX_FAIL = 0x0001,
112 IEEE80211_RADIOTAP_F_TX_CTS = 0x0002,
113 IEEE80211_RADIOTAP_F_TX_RTS = 0x0004,
114 IEEE80211_RADIOTAP_F_TX_NOACK = 0x0008,
115};
116
117/* for IEEE80211_RADIOTAP_MCS "have" flags */
118enum ieee80211_radiotap_mcs_have {
119 IEEE80211_RADIOTAP_MCS_HAVE_BW = 0x01,
120 IEEE80211_RADIOTAP_MCS_HAVE_MCS = 0x02,
121 IEEE80211_RADIOTAP_MCS_HAVE_GI = 0x04,
122 IEEE80211_RADIOTAP_MCS_HAVE_FMT = 0x08,
123 IEEE80211_RADIOTAP_MCS_HAVE_FEC = 0x10,
124 IEEE80211_RADIOTAP_MCS_HAVE_STBC = 0x20,
125};
126
127enum ieee80211_radiotap_mcs_flags {
128 IEEE80211_RADIOTAP_MCS_BW_MASK = 0x03,
129 IEEE80211_RADIOTAP_MCS_BW_20 = 0,
130 IEEE80211_RADIOTAP_MCS_BW_40 = 1,
131 IEEE80211_RADIOTAP_MCS_BW_20L = 2,
132 IEEE80211_RADIOTAP_MCS_BW_20U = 3,
133
134 IEEE80211_RADIOTAP_MCS_SGI = 0x04,
135 IEEE80211_RADIOTAP_MCS_FMT_GF = 0x08,
136 IEEE80211_RADIOTAP_MCS_FEC_LDPC = 0x10,
137 IEEE80211_RADIOTAP_MCS_STBC_MASK = 0x60,
138 IEEE80211_RADIOTAP_MCS_STBC_1 = 1,
139 IEEE80211_RADIOTAP_MCS_STBC_2 = 2,
140 IEEE80211_RADIOTAP_MCS_STBC_3 = 3,
141 IEEE80211_RADIOTAP_MCS_STBC_SHIFT = 5,
142};
143
144/* for IEEE80211_RADIOTAP_AMPDU_STATUS */
145enum ieee80211_radiotap_ampdu_flags {
146 IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN = 0x0001,
147 IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN = 0x0002,
148 IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN = 0x0004,
149 IEEE80211_RADIOTAP_AMPDU_IS_LAST = 0x0008,
150 IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR = 0x0010,
151 IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN = 0x0020,
152 IEEE80211_RADIOTAP_AMPDU_EOF = 0x0040,
153 IEEE80211_RADIOTAP_AMPDU_EOF_KNOWN = 0x0080,
154};
155
156/* for IEEE80211_RADIOTAP_VHT */
157enum ieee80211_radiotap_vht_known {
158 IEEE80211_RADIOTAP_VHT_KNOWN_STBC = 0x0001,
159 IEEE80211_RADIOTAP_VHT_KNOWN_TXOP_PS_NA = 0x0002,
160 IEEE80211_RADIOTAP_VHT_KNOWN_GI = 0x0004,
161 IEEE80211_RADIOTAP_VHT_KNOWN_SGI_NSYM_DIS = 0x0008,
162 IEEE80211_RADIOTAP_VHT_KNOWN_LDPC_EXTRA_OFDM_SYM = 0x0010,
163 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED = 0x0020,
164 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH = 0x0040,
165 IEEE80211_RADIOTAP_VHT_KNOWN_GROUP_ID = 0x0080,
166 IEEE80211_RADIOTAP_VHT_KNOWN_PARTIAL_AID = 0x0100,
167};
168
169enum ieee80211_radiotap_vht_flags {
170 IEEE80211_RADIOTAP_VHT_FLAG_STBC = 0x01,
171 IEEE80211_RADIOTAP_VHT_FLAG_TXOP_PS_NA = 0x02,
172 IEEE80211_RADIOTAP_VHT_FLAG_SGI = 0x04,
173 IEEE80211_RADIOTAP_VHT_FLAG_SGI_NSYM_M10_9 = 0x08,
174 IEEE80211_RADIOTAP_VHT_FLAG_LDPC_EXTRA_OFDM_SYM = 0x10,
175 IEEE80211_RADIOTAP_VHT_FLAG_BEAMFORMED = 0x20,
176};
177
178enum ieee80211_radiotap_vht_coding {
179 IEEE80211_RADIOTAP_CODING_LDPC_USER0 = 0x01,
180 IEEE80211_RADIOTAP_CODING_LDPC_USER1 = 0x02,
181 IEEE80211_RADIOTAP_CODING_LDPC_USER2 = 0x04,
182 IEEE80211_RADIOTAP_CODING_LDPC_USER3 = 0x08,
183};
184
185/* for IEEE80211_RADIOTAP_TIMESTAMP */
186enum ieee80211_radiotap_timestamp_unit_spos {
187 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MASK = 0x000F,
188 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_MS = 0x0000,
189 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US = 0x0001,
190 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_NS = 0x0003,
191 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_MASK = 0x00F0,
192 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_BEGIN_MDPU = 0x0000,
193 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ = 0x0010,
194 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_PPDU = 0x0020,
195 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_EO_MPDU = 0x0030,
196 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_UNKNOWN = 0x00F0,
197};
198
199enum ieee80211_radiotap_timestamp_flags {
200 IEEE80211_RADIOTAP_TIMESTAMP_FLAG_64BIT = 0x00,
201 IEEE80211_RADIOTAP_TIMESTAMP_FLAG_32BIT = 0x01,
202 IEEE80211_RADIOTAP_TIMESTAMP_FLAG_ACCURACY = 0x02,
203};
204
205/**
206 * ieee80211_get_radiotap_len - get radiotap header length
207 */
208static inline u16 ieee80211_get_radiotap_len(const char *data)
209{
210 struct ieee80211_radiotap_header *hdr = (void *)data;
211
212 return get_unaligned_le16(&hdr->it_len);
213}
214
215#endif /* __RADIOTAP_H */
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 */
64struct 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 * IEEE80211_RADIOTAP_MCS u8, u8, u8 unitless
182 *
183 * Contains a bitmap of known fields/flags, the flags, and
184 * the MCS index.
185 *
186 */
187enum 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,
202 IEEE80211_RADIOTAP_RX_FLAGS = 14,
203 IEEE80211_RADIOTAP_TX_FLAGS = 15,
204 IEEE80211_RADIOTAP_RTS_RETRIES = 16,
205 IEEE80211_RADIOTAP_DATA_RETRIES = 17,
206
207 IEEE80211_RADIOTAP_MCS = 19,
208
209 /* valid in every it_present bitmap, even vendor namespaces */
210 IEEE80211_RADIOTAP_RADIOTAP_NAMESPACE = 29,
211 IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30,
212 IEEE80211_RADIOTAP_EXT = 31
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 */
244#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* bad FCS */
245
246/* For IEEE80211_RADIOTAP_RX_FLAGS */
247#define IEEE80211_RADIOTAP_F_RX_BADPLCP 0x0002 /* frame has bad PLCP */
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 */
254
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
273/* Ugly macro to convert literal channel numbers into their mhz equivalents
274 * There are certianly some conditions that will break this (like feeding it '30')
275 * but they shouldn't arise since nothing talks on channel 30. */
276#define ieee80211chan2mhz(x) \
277 (((x) <= 14) ? \
278 (((x) == 14) ? 2484 : ((x) * 5) + 2407) : \
279 ((x) + 1000) * 5)
280
281/* helpers */
282static inline int ieee80211_get_radiotap_len(unsigned char *data)
283{
284 struct ieee80211_radiotap_header *hdr =
285 (struct ieee80211_radiotap_header *)data;
286
287 return get_unaligned_le16(&hdr->it_len);
288}
289
290#endif /* IEEE80211_RADIOTAP_H */