dist/dhcp/includes/netinet/if_ether.h

   1 /*      $NetBSD: if_ether.h,v 1.1 2001/08/03 11:35:35 drochner Exp $    */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following 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  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)if_ether.h  8.1 (Berkeley) 6/10/93
  32  */
  33
  34 /*
  35  * Ethernet address - 6 octets
  36  * this is only used by the ethers(3) functions.
  37  */
  38 struct ether_addr {
  39         u_int8_t ether_addr_octet[6];
  40 };
  41
  42 /*
  43  * Structure of a 10Mb/s Ethernet header.
  44  */
  45 #define ETHER_ADDR_LEN  6
  46
  47 struct  isc_ether_header {
  48         u_int8_t  ether_dhost[ETHER_ADDR_LEN];
  49         u_int8_t  ether_shost[ETHER_ADDR_LEN];
  50         u_int16_t ether_type;
  51 };
  52
  53 #define       ETHERTYPE_PUP           0x0200  /* PUP protocol */
  54 #define       ETHERTYPE_IP            0x0800  /* IP protocol */
  55 #define       ETHERTYPE_ARP           0x0806  /* address resolution protocol */
  56
  57 #define ETHER_HEADER_SIZE (ETHER_ADDR_LEN * 2 + sizeof (u_int16_t))