| ieee80211_radiotap.h (154139) | ieee80211_radiotap.h (167443) |
|---|---|
| 1/* $FreeBSD: head/sys/net80211/ieee80211_radiotap.h 154139 2006-01-09 17:04:56Z sam $ */ 2/* $NetBSD: ieee80211_radiotap.h,v 1.10 2005/01/04 00:34:58 dyoung Exp $ */ | 1/* $FreeBSD: head/sys/net80211/ieee80211_radiotap.h 167443 2007-03-11 07:42:02Z sam $ */ 2/* $NetBSD: ieee80211_radiotap.h,v 1.16 2007/01/06 05:51:15 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 --- 13 unchanged lines hidden (view full) --- 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 */ | 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 --- 13 unchanged lines hidden (view full) --- 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#ifndef _NET_IF_IEEE80211RADIOTAP_H_ 33#define _NET_IF_IEEE80211RADIOTAP_H_ | 32#ifndef _NET80211_IEEE80211_RADIOTAP_H_ 33#define _NET80211_IEEE80211_RADIOTAP_H_ |
| 34 | 34 |
| 35/* A generic radio capture format is desirable. There is one for 36 * Linux, but it is neither rigidly defined (there were not even 37 * units given for some fields) nor easily extensible. | 35/* A generic radio capture format is desirable. It must be 36 * rigidly defined (e.g., units for fields should be given), 37 * and easily extensible. |
| 38 * | 38 * |
| 39 * I suggest the following extensible radio capture format. It is | 39 * The following is an extensible radio capture format. It is |
| 40 * based on a bitmap indicating which fields are present. 41 * 42 * I am trying to describe precisely what the application programmer 43 * should expect in the following, and for that reason I tell the 44 * units and origin of each measurement (where it applies), or else I 45 * use sufficiently weaselly language ("is a monotonically nondecreasing 46 * function of...") that I cannot set false expectations for lawyerly 47 * readers. 48 */ 49#if defined(__KERNEL__) || defined(_KERNEL) 50#ifndef DLT_IEEE802_11_RADIO 51#define DLT_IEEE802_11_RADIO 127 /* 802.11 plus WLAN header */ 52#endif 53#endif /* defined(__KERNEL__) || defined(_KERNEL) */ 54 | 40 * based on a bitmap indicating which fields are present. 41 * 42 * I am trying to describe precisely what the application programmer 43 * should expect in the following, and for that reason I tell the 44 * units and origin of each measurement (where it applies), or else I 45 * use sufficiently weaselly language ("is a monotonically nondecreasing 46 * function of...") that I cannot set false expectations for lawyerly 47 * readers. 48 */ 49#if defined(__KERNEL__) || defined(_KERNEL) 50#ifndef DLT_IEEE802_11_RADIO 51#define DLT_IEEE802_11_RADIO 127 /* 802.11 plus WLAN header */ 52#endif 53#endif /* defined(__KERNEL__) || defined(_KERNEL) */ 54 |
| 55/* XXX tcpdump/libpcap do not tolerate variable-length headers, 56 * yet, so we pad every radiotap header to 64 bytes. Ugh. 57 */ 58#define IEEE80211_RADIOTAP_HDRLEN 64 | 55#define IEEE80211_RADIOTAP_HDRLEN 64 /* XXX deprecated */ |
| 59 | 56 |
| 60/* The radio capture header precedes the 802.11 header. */ | 57/* 58 * The radio capture header precedes the 802.11 header. 59 * 60 * Note well: all radiotap fields are little-endian. 61 */ |
| 61struct ieee80211_radiotap_header { 62 u_int8_t it_version; /* Version 0. Only increases 63 * for drastic changes, 64 * introduction of compatible 65 * new fields does not count. 66 */ 67 u_int8_t it_pad; 68 u_int16_t it_len; /* length of the whole --- 5 unchanged lines hidden (view full) --- 74 * fields are present. Set bit 31 75 * (0x80000000) to extend the 76 * bitmap by another 32 bits. 77 * Additional extensions are made 78 * by setting bit 31. 79 */ 80} __attribute__((__packed__)); 81 | 62struct ieee80211_radiotap_header { 63 u_int8_t it_version; /* Version 0. Only increases 64 * for drastic changes, 65 * introduction of compatible 66 * new fields does not count. 67 */ 68 u_int8_t it_pad; 69 u_int16_t it_len; /* length of the whole --- 5 unchanged lines hidden (view full) --- 75 * fields are present. Set bit 31 76 * (0x80000000) to extend the 77 * bitmap by another 32 bits. 78 * Additional extensions are made 79 * by setting bit 31. 80 */ 81} __attribute__((__packed__)); 82 |
| 82/* Name Data type Units | 83/* 84 * Name Data type Units |
| 83 * ---- --------- ----- 84 * 85 * IEEE80211_RADIOTAP_TSFT u_int64_t microseconds 86 * 87 * Value in microseconds of the MAC's 64-bit 802.11 Time 88 * Synchronization Function timer when the first bit of the 89 * MPDU arrived at the MAC. For received frames, only. 90 * --- 62 unchanged lines hidden (view full) --- 153 * 154 * Properties of transmitted and received frames. See flags 155 * defined below. 156 * 157 * IEEE80211_RADIOTAP_ANTENNA u_int8_t antenna index 158 * 159 * Unitless indication of the Rx/Tx antenna for this packet. 160 * The first antenna is antenna 0. | 85 * ---- --------- ----- 86 * 87 * IEEE80211_RADIOTAP_TSFT u_int64_t microseconds 88 * 89 * Value in microseconds of the MAC's 64-bit 802.11 Time 90 * Synchronization Function timer when the first bit of the 91 * MPDU arrived at the MAC. For received frames, only. 92 * --- 62 unchanged lines hidden (view full) --- 155 * 156 * Properties of transmitted and received frames. See flags 157 * defined below. 158 * 159 * IEEE80211_RADIOTAP_ANTENNA u_int8_t antenna index 160 * 161 * Unitless indication of the Rx/Tx antenna for this packet. 162 * The first antenna is antenna 0. |
| 161 * 162 * IEEE80211_RADIOTAP_FCS u_int32_t data 163 * 164 * FCS from frame in network byte order. | |
| 165 */ 166enum ieee80211_radiotap_type { 167 IEEE80211_RADIOTAP_TSFT = 0, 168 IEEE80211_RADIOTAP_FLAGS = 1, 169 IEEE80211_RADIOTAP_RATE = 2, 170 IEEE80211_RADIOTAP_CHANNEL = 3, 171 IEEE80211_RADIOTAP_FHSS = 4, 172 IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, --- 36 unchanged lines hidden (view full) --- 209 */ 210#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ 211#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between 212 * 802.11 header and payload 213 * (to 32-bit boundary) 214 */ 215#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* does not pass FCS check */ 216 | 163 */ 164enum ieee80211_radiotap_type { 165 IEEE80211_RADIOTAP_TSFT = 0, 166 IEEE80211_RADIOTAP_FLAGS = 1, 167 IEEE80211_RADIOTAP_RATE = 2, 168 IEEE80211_RADIOTAP_CHANNEL = 3, 169 IEEE80211_RADIOTAP_FHSS = 4, 170 IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, --- 36 unchanged lines hidden (view full) --- 207 */ 208#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ 209#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between 210 * 802.11 header and payload 211 * (to 32-bit boundary) 212 */ 213#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* does not pass FCS check */ 214 |
| 217#endif /* _NET_IF_IEEE80211RADIOTAP_H_ */ | 215#endif /* !_NET80211_IEEE80211_RADIOTAP_H_ */ |