Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / token.h
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1/* @(#) $Header: /tcpdump/master/tcpdump/token.h,v 1.6 2002/12/11 07:14:12 guy Exp $ (LBL) */
2/*
3 * Copyright (c) 1998, Larry Lile
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
11 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30#define TOKEN_HDRLEN 14
31#define TOKEN_RING_MAC_LEN 6
32#define ROUTING_SEGMENT_MAX 16
33#define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80)
34#define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6)
35#define TOKEN_FC_LLC 1
36
37#define BROADCAST(trp) ((ntohs((trp)->token_rcf) & 0xE000) >> 13)
38#define RIF_LENGTH(trp) ((ntohs((trp)->token_rcf) & 0x1f00) >> 8)
39#define DIRECTION(trp) ((ntohs((trp)->token_rcf) & 0x0080) >> 7)
40#define LARGEST_FRAME(trp) ((ntohs((trp)->token_rcf) & 0x0070) >> 4)
41#define RING_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0xfff0) >> 4)
42#define BRIDGE_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0x000f))
43#define SEGMENT_COUNT(trp) ((int)((RIF_LENGTH(trp) - 2) / 2))
44
45struct token_header {
46 u_int8_t token_ac;
47 u_int8_t token_fc;
48 u_int8_t token_dhost[TOKEN_RING_MAC_LEN];
49 u_int8_t token_shost[TOKEN_RING_MAC_LEN];
50 u_int16_t token_rcf;
51 u_int16_t token_rseg[ROUTING_SEGMENT_MAX];
52};