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IF_ETHER.H

/*
 * 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.
 *
 *    @(#)if_ether.h    8.3 (Berkeley) 5/2/95
 */

#include <net/if_arp.h>

/*
 * Ethernet address - 6 octets
 */
00041 struct ether_addr {
      u_char      ether_addr_octet[6];
};

/*
 * Structure of a 10Mb/s Ethernet header.
 */
00048 struct      ether_header {
      u_char      ether_dhost[6];
      u_char      ether_shost[6];
      u_short     ether_type;
};

#define     ETHERTYPE_PUP           0x0200      /* PUP protocol */
#define     ETHERTYPE_IP            0x0800      /* IP protocol */
#define ETHERTYPE_ARP         0x0806      /* Addr. resolution protocol */
#define ETHERTYPE_REVARP      0x8035      /* reverse Addr. resolution protocol */

/*
 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed
 * by an ETHER type (as given above) and then the (variable-length) header.
 */
#define     ETHERTYPE_TRAIL         0x1000            /* Trailer packet */
#define     ETHERTYPE_NTRAILER      16

#define     ETHERMTU    1500
#define     ETHERMIN    (60-14)

/*
 * Ethernet Address Resolution Protocol.
 *
 * See RFC 826 for protocol description.  Structure below is adapted
 * to resolving internet addresses.  Field names used correspond to 
 * RFC 826.
 */
00077 struct      ether_arp {
      struct      arphdr ea_hdr;    /* fixed-size header */
      u_char      arp_sha[6]; /* sender hardware address */
      u_char      arp_spa[4]; /* sender protocol address */
      u_char      arp_tha[6]; /* target hardware address */
      u_char      arp_tpa[4]; /* target protocol address */
};
#define     arp_hrd     ea_hdr.ar_hrd
#define     arp_pro     ea_hdr.ar_pro
#define     arp_hln     ea_hdr.ar_hln
#define     arp_pln     ea_hdr.ar_pln
#define     arp_op      ea_hdr.ar_op

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