/* $NetBSD: token.h,v 1.1.1.1 2001/06/25 19:26:41 itojun Exp $ */ /* @(#) Header: /tcpdump/master/tcpdump/token.h,v 1.3 2000/10/03 02:55:03 itojun Exp (LBL) */ /* * Copyright (c) 1998, Larry Lile * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #define TOKEN_HDRLEN 14 #define TOKEN_RING_MAC_LEN 6 #define ROUTING_SEGMENT_MAX 16 #define IS_SOURCE_ROUTED(trp) ((trp)->token_shost[0] & 0x80) #define FRAME_TYPE(trp) (((trp)->token_fc & 0xC0) >> 6) #define TOKEN_FC_LLC 1 #define BROADCAST(trp) ((ntohs((trp)->token_rcf) & 0xE000) >> 13) #define RIF_LENGTH(trp) ((ntohs((trp)->token_rcf) & 0x1f00) >> 8) #define DIRECTION(trp) ((ntohs((trp)->token_rcf) & 0x0080) >> 7) #define LARGEST_FRAME(trp) ((ntohs((trp)->token_rcf) & 0x0070) >> 4) #define RING_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0xfff0) >> 4) #define BRIDGE_NUMBER(trp, x) ((ntohs((trp)->token_rseg[x]) & 0x000f)) #define SEGMENT_COUNT(trp) ((RIF_LENGTH(trp) - 2) / 2) struct token_header { u_int8_t token_ac; u_int8_t token_fc; u_int8_t token_dhost[TOKEN_RING_MAC_LEN]; u_int8_t token_shost[TOKEN_RING_MAC_LEN]; u_int16_t token_rcf; u_int16_t token_rseg[ROUTING_SEGMENT_MAX]; };