text: /* @(#) $Header: /tcpdump/master/tcpdump/token.h,v 1.6 2002-12-11 07:14:12 guy 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.
   *
   * $FreeBSD: soc2013/dpl/head/contrib/tcpdump/token.h 214521 2010-10-28 19:06:17Z rpaulo $
   */
  
  #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)		((EXTRACT_16BITS(&(trp)->token_rcf) & 0xE000) >> 13)
  #define RIF_LENGTH(trp)		((EXTRACT_16BITS(&(trp)->token_rcf) & 0x1f00) >> 8)
  #define DIRECTION(trp)		((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0080) >> 7)
  #define LARGEST_FRAME(trp)	((EXTRACT_16BITS(&(trp)->token_rcf) & 0x0070) >> 4)
  #define RING_NUMBER(trp, x)	((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0xfff0) >> 4)
  #define BRIDGE_NUMBER(trp, x)	((EXTRACT_16BITS(&(trp)->token_rseg[x]) & 0x000f))
  #define SEGMENT_COUNT(trp)	((int)((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];
  };
  