1 /* 2 * INET An implementation of the TCP/IP protocol suite for the LINUX 3 * operating system. INET is implemented using the BSD Socket 4 * interface as the means of communication with the user level. 5 * 6 * Global definitions for the Ethernet IEEE 802.3 interface. 7 * 8 * Version: @(#)if_ether.h 1.0.1a 02/08/94 9 * 10 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 11 * Donald Becker, <becker@super.org> 12 * Alan Cox, <alan@redhat.com> 13 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License 17 * as published by the Free Software Foundation; either version 18 * 2 of the License, or (at your option) any later version. 19 */ 20 21 #ifndef _LINUX_IF_ETHER_H 22 #define _LINUX_IF_ETHER_H 23 24 /* 25 * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble 26 * and FCS/CRC (frame check sequence). 27 */ 28 29 #define ETH_ALEN 6 /* Octets in one ethernet addr */ 30 #define ETH_HLEN 14 /* Total octets in header. */ 31 #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ 32 #define ETH_DATA_LEN 1500 /* Max. octets in payload */ 33 #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ 34 35 /* 36 * These are the defined Ethernet Protocol ID's. 37 */ 38 39 #define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ 40 #define ETH_P_PUP 0x0200 /* Xerox PUP packet */ 41 #define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ 42 #define ETH_P_IP 0x0800 /* Internet Protocol packet */ 43 #define ETH_P_X25 0x0805 /* CCITT X.25 */ 44 #define ETH_P_ARP 0x0806 /* Address Resolution packet */ 45 #define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ 46 #define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */ 47 #define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */ 48 #define ETH_P_DEC 0x6000 /* DEC Assigned proto */ 49 #define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ 50 #define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ 51 #define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ 52 #define ETH_P_LAT 0x6004 /* DEC LAT */ 53 #define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ 54 #define ETH_P_CUST 0x6006 /* DEC Customer use */ 55 #define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ 56 #define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ 57 #define ETH_P_ATALK 0x809B /* Appletalk DDP */ 58 #define ETH_P_AARP 0x80F3 /* Appletalk AARP */ 59 #define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ 60 #define ETH_P_IPX 0x8137 /* IPX over DIX */ 61 #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ 62 #define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ 63 #define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ 64 #define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ 65 #define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ 66 #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ 67 #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport 68 * over Ethernet 69 */ 70 #define ETH_P_EDP2 0x88A2 /* Coraid EDP2 */ 71 72 /* 73 * Non DIX types. Won't clash for 1500 types. 74 */ 75 76 #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ 77 #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ 78 #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ 79 #define ETH_P_802_2 0x0004 /* 802.2 frames */ 80 #define ETH_P_SNAP 0x0005 /* Internal only */ 81 #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ 82 #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ 83 #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ 84 #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ 85 #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ 86 #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ 87 #define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ 88 #define ETH_P_CONTROL 0x0016 /* Card specific control frames */ 89 #define ETH_P_IRDA 0x0017 /* Linux-IrDA */ 90 #define ETH_P_ECONET 0x0018 /* Acorn Econet */ 91 #define ETH_P_HDLC 0x0019 /* HDLC frames */ 92 93 /* 94 * This is an Ethernet frame header. 95 */ 96 97 struct ethhdr 98 { 99 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 100 unsigned char h_source[ETH_ALEN]; /* source ether addr */ 101 unsigned short h_proto; /* packet type ID field */ 102 } __attribute__((packed)); 103 104 #endif /* _LINUX_IF_ETHER_H */ 105