/* Copyright (C) 1997 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#ifndef _NET_IF_ETHER_H

#define _NET_IF_ETHER_H	1

/*

 *	IEEE 802.3 Ethernet magic constants.  The frame sizes omit the preamble

 *	and FCS/CRC (frame check sequence).

 */

#define ETH_ALEN	6		/* Octets in one ethernet addr	 */

#define ETH_HLEN	14		/* Total octets in header.	 */

#define ETH_ZLEN	60		/* Min. octets in frame sans FCS */

#define ETH_DATA_LEN	1500		/* Max. octets in payload	 */

#define ETH_FRAME_LEN	1514		/* Max. octets in frame sans FCS */

/*

 *	These are the defined Ethernet Protocol ID's.

 */

#define ETH_P_LOOP	0x0060		/* Ethernet Loopback packet	*/

#define ETH_P_ECHO	0x0200		/* Ethernet Echo packet		*/

#define ETH_P_PUP	0x0400		/* Xerox PUP packet		*/

#define ETH_P_IP	0x0800		/* Internet Protocol packet	*/

#define ETH_P_X25	0x0805		/* CCITT X.25			*/

#define ETH_P_ARP	0x0806		/* Address Resolution packet	*/

#define	ETH_P_BPQ	0x08FF		/* G8BPQ AX.25 Ethernet Packet	[ NOT AN OFFICIALLY REGISTERED ID ] */

#define ETH_P_DEC       0x6000          /* DEC Assigned proto           */

#define ETH_P_DNA_DL    0x6001          /* DEC DNA Dump/Load            */

#define ETH_P_DNA_RC    0x6002          /* DEC DNA Remote Console       */

#define ETH_P_DNA_RT    0x6003          /* DEC DNA Routing              */

#define ETH_P_LAT       0x6004          /* DEC LAT                      */

#define ETH_P_DIAG      0x6005          /* DEC Diagnostics              */

#define ETH_P_CUST      0x6006          /* DEC Customer use             */

#define ETH_P_SCA       0x6007          /* DEC Systems Comms Arch       */

#define ETH_P_RARP      0x8035		/* Reverse Addr Res packet	*/

#define ETH_P_ATALK	0x809B		/* Appletalk DDP		*/

#define ETH_P_AARP	0x80F3		/* Appletalk AARP		*/

#define ETH_P_IPX	0x8137		/* IPX over DIX			*/

#define ETH_P_IPV6	0x86DD		/* IPv6 over bluebook		*/

/*

 *	Non DIX types. Won't clash for 1500 types.

 */

#define ETH_P_802_3	0x0001		/* Dummy type for 802.3 frames  */

#define ETH_P_AX25	0x0002		/* Dummy protocol id for AX.25  */

#define ETH_P_ALL	0x0003		/* Every packet (be careful!!!) */

#define ETH_P_802_2	0x0004		/* 802.2 frames 		*/

#define ETH_P_SNAP	0x0005		/* Internal only		*/

#define ETH_P_DDCMP     0x0006          /* DEC DDCMP: Internal only     */

#define ETH_P_WAN_PPP   0x0007          /* Dummy type for WAN PPP frames*/

#define ETH_P_PPP_MP    0x0008          /* Dummy type for PPP MP frames */

#define ETH_P_LOCALTALK 0x0009		/* Localtalk pseudo type 	*/

#define ETH_P_PPPTALK	0x0010		/* Dummy type for Atalk over PPP*/

#define ETH_P_TR_802_2	0x0011		/* 802.2 frames 		*/

/*

 *	This is an Ethernet frame header.

 */

struct ethhdr

{

  unsigned char	h_dest[ETH_ALEN];	/* destination eth addr	*/

  unsigned char	h_source[ETH_ALEN];	/* source ether addr	*/

  unsigned short int h_proto;		/* packet type ID field	*/

};

#endif	/* net/if_ether.h */