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if_ether.h

/*
 * INET           An implementation of the TCP/IP protocol suite for the LINUX
 *          operating system.  INET is implemented using the  BSD Socket
 *          interface as the means of communication with the user level.
 *
 *          Global definitions for the Ethernet IEEE 802.3 interface.
 *
 * Version: @(#)if_ether.h    1.0.1a      02/08/94
 *
 * Author:  Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 *          Donald Becker, <becker@super.org>
 *          Alan Cox, <alan@redhat.com>
 *          Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
 *
 *          This program is free software; you can redistribute it and/or
 *          modify it under the terms of the GNU General Public License
 *          as published by the Free Software Foundation; either version
 *          2 of the License, or (at your option) any later version.
 */
 
#ifndef _LINUX_IF_ETHER_H
#define _LINUX_IF_ETHER_H

/*
 *    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_PUP 0x0200            /* Xerox PUP packet           */
#define ETH_P_PUPAT     0x0201            /* Xerox PUP Addr Trans 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_IEEEPUP   0x0a00            /* Xerox IEEE802.3 PUP packet */
#define ETH_P_IEEEPUPAT 0x0a01            /* Xerox IEEE802.3 PUP Addr Trans packet */
#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_8021Q     0x8100          /* 802.1Q VLAN Extended Header  */
#define ETH_P_IPX 0x8137            /* IPX over DIX               */
#define ETH_P_IPV6      0x86DD            /* IPv6 over bluebook         */
#define ETH_P_WCCP      0x883E            /* Web-cache coordination protocol
                               * defined in draft-wilson-wrec-wccp-v2-00.txt */
#define ETH_P_PPP_DISC  0x8863            /* PPPoE discovery messages     */
#define ETH_P_PPP_SES   0x8864            /* PPPoE session messages     */
#define ETH_P_MPLS_UC   0x8847            /* MPLS Unicast traffic       */
#define ETH_P_MPLS_MC   0x8848            /* MPLS Multicast traffic     */
#define ETH_P_ATMMPOA   0x884c            /* MultiProtocol Over ATM     */
#define ETH_P_ATMFATE   0x8884            /* Frame-based ATM Transport
                               * over Ethernet
                               */
#define ETH_P_AOE 0x88A2            /* ATA over Ethernet          */

/*
 *    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         */
#define ETH_P_MOBITEX   0x0015            /* Mobitex (kaz@cafe.net)     */
#define ETH_P_CONTROL   0x0016            /* Card specific control frames */
#define ETH_P_IRDA      0x0017            /* Linux-IrDA                 */
#define ETH_P_ECONET    0x0018            /* Acorn Econet               */
#define ETH_P_HDLC      0x0019            /* HDLC frames                */
#define ETH_P_ARCNET    0x001A            /* 1A for ArcNet :-)            */

/*
 *    This is an Ethernet frame header.
 */
 
00100 struct ethhdr {
      unsigned char     h_dest[ETH_ALEN]; /* destination eth addr */
      unsigned char     h_source[ETH_ALEN];     /* source ether addr    */
      unsigned short    h_proto;          /* packet type ID field */
} __attribute__((packed));

#endif      /* _LINUX_IF_ETHER_H */

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