source: rtems-libbsd/freebsd/contrib/tcpdump/arcnet.h @ 084d4db

/*
 * Copyright (c) 1982, 1986, 1993
 *      The Regents of the University of California.  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, 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * @(#) $Id: arcnet.h,v 1.3 2003-01-23 09:05:37 guy Exp $ (LBL)
 *
 * from: NetBSD: if_arc.h,v 1.13 1999/11/19 20:41:19 thorpej Exp
 */

/*
 * Structure of a 2.5MB/s Arcnet header on the BSDs,
 * as given to interface code.
 */
struct  arc_header {
        u_int8_t  arc_shost;
        u_int8_t  arc_dhost;
        u_int8_t  arc_type;
        /*
         * only present for newstyle encoding with LL fragmentation.
         * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
         */
        u_int8_t  arc_flag;
        u_int16_t arc_seqid;

        /*
         * only present in exception packets (arc_flag == 0xff)
         */
        u_int8_t  arc_type2;    /* same as arc_type */
        u_int8_t  arc_flag2;    /* real flag value */
        u_int16_t arc_seqid2;   /* real seqid value */
};

#define ARC_HDRLEN              3
#define ARC_HDRNEWLEN           6
#define ARC_HDRNEWLEN_EXC       10

/* RFC 1051 */
#define ARCTYPE_IP_OLD          240     /* IP protocol */
#define ARCTYPE_ARP_OLD         241     /* address resolution protocol */

/* RFC 1201 */
#define ARCTYPE_IP              212     /* IP protocol */
#define ARCTYPE_ARP             213     /* address resolution protocol */
#define ARCTYPE_REVARP          214     /* reverse addr resolution protocol */

#define ARCTYPE_ATALK           221     /* Appletalk */
#define ARCTYPE_BANIAN          247     /* Banyan Vines */
#define ARCTYPE_IPX             250     /* Novell IPX */

#define ARCTYPE_INET6           0xc4    /* IPng */
#define ARCTYPE_DIAGNOSE        0x80    /* as per ANSI/ATA 878.1 */

/*
 * Structure of a 2.5MB/s Arcnet header on Linux.  Linux has
 * an extra "offset" field when given to interface code, and
 * never presents packets that look like exception frames.
 */
struct  arc_linux_header {
        u_int8_t  arc_shost;
        u_int8_t  arc_dhost;
        u_int16_t arc_offset;
        u_int8_t  arc_type;
        /*
         * only present for newstyle encoding with LL fragmentation.
         * Don't use sizeof(anything), use ARC_LINUX_HDR{,NEW}LEN
         * instead.
         */
        u_int8_t  arc_flag;
        u_int16_t arc_seqid;
};

#define ARC_LINUX_HDRLEN        5
#define ARC_LINUX_HDRNEWLEN     8