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_ECHO 0x0200 /* Ethernet Echo packet */
41 #define ETH_P_PUP 0x0400 /* Xerox PUP 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_DEC 0x6000 /* DEC Assigned proto */
47 #define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
48 #define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
49 #define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
50 #define ETH_P_LAT 0x6004 /* DEC LAT */
51 #define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
52 #define ETH_P_CUST 0x6006 /* DEC Customer use */
53 #define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
54 #define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
55 #define ETH_P_ATALK 0x809B /* Appletalk DDP */
56 #define ETH_P_AARP 0x80F3 /* Appletalk AARP */
57 #define ETH_P_IPX 0x8137 /* IPX over DIX */
58 #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
59 #define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
60 #define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
61 #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
62 #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport
63 * over Ethernet
64 */
65
66 /*
67 * Non DIX types. Won't clash for 1500 types.
68 */
69
70 #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
71 #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
72 #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
73 #define ETH_P_802_2 0x0004 /* 802.2 frames */
74 #define ETH_P_SNAP 0x0005 /* Internal only */
75 #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
76 #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
77 #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
78 #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
79 #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
80 #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
81 #define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
82 #define ETH_P_CONTROL 0x0016 /* Card specific control frames */
83 #define ETH_P_IRDA 0x0017 /* Linux-IrDA */
84 #define ETH_P_ECONET 0x0018 /* Acorn Econet */
85
86 /*
87 * This is an Ethernet frame header.
88 */
89
90 struct ethhdr
91 {
92 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
93 unsigned char h_source[ETH_ALEN]; /* source ether addr */
94 unsigned short h_proto; /* packet type ID field */
95 };
96
97 #endif /* _LINUX_IF_ETHER_H */
98
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