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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Pavel Roskinac57d042005-11-10 13:03:08 -080024#include <linux/types.h>
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026/*
27 * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble
28 * and FCS/CRC (frame check sequence).
29 */
30
31#define ETH_ALEN 6 /* Octets in one ethernet addr */
32#define ETH_HLEN 14 /* Total octets in header. */
33#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
34#define ETH_DATA_LEN 1500 /* Max. octets in payload */
35#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
36
37/*
38 * These are the defined Ethernet Protocol ID's.
39 */
40
41#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */
42#define ETH_P_PUP 0x0200 /* Xerox PUP packet */
43#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
44#define ETH_P_IP 0x0800 /* Internet Protocol packet */
45#define ETH_P_X25 0x0805 /* CCITT X.25 */
46#define ETH_P_ARP 0x0806 /* Address Resolution packet */
47#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */
48#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */
49#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */
50#define ETH_P_DEC 0x6000 /* DEC Assigned proto */
51#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
52#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
53#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
54#define ETH_P_LAT 0x6004 /* DEC LAT */
55#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
56#define ETH_P_CUST 0x6006 /* DEC Customer use */
57#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
58#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
59#define ETH_P_ATALK 0x809B /* Appletalk DDP */
60#define ETH_P_AARP 0x80F3 /* Appletalk AARP */
61#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
62#define ETH_P_IPX 0x8137 /* IPX over DIX */
63#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
Jay Vosburgh8f903c72006-02-21 16:36:44 -080064#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol
66 * defined in draft-wilson-wrec-wccp-v2-00.txt */
67#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
68#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
69#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */
70#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */
71#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
72#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport
73 * over Ethernet
74 */
75#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */
Per Liden33a9c4d2006-01-16 11:42:12 +010076#define ETH_P_TIPC 0x88CA /* TIPC */
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
78/*
79 * Non DIX types. Won't clash for 1500 types.
80 */
81
82#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
83#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
84#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
85#define ETH_P_802_2 0x0004 /* 802.2 frames */
86#define ETH_P_SNAP 0x0005 /* Internal only */
87#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
88#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
89#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
90#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
91#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
92#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
93#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
94#define ETH_P_CONTROL 0x0016 /* Card specific control frames */
95#define ETH_P_IRDA 0x0017 /* Linux-IrDA */
96#define ETH_P_ECONET 0x0018 /* Acorn Econet */
97#define ETH_P_HDLC 0x0019 /* HDLC frames */
98#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */
99
100/*
101 * This is an Ethernet frame header.
102 */
103
104struct ethhdr {
105 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
106 unsigned char h_source[ETH_ALEN]; /* source ether addr */
Pavel Roskinac57d042005-11-10 13:03:08 -0800107 __be16 h_proto; /* packet type ID field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108} __attribute__((packed));
109
110#ifdef __KERNEL__
111#include <linux/skbuff.h>
112
113static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
114{
Arnaldo Carvalho de Melo98e399f2007-03-19 15:33:04 -0700115 return (struct ethhdr *)skb_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116}
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300117
Ben Dooks2fab35d2005-09-27 15:59:43 -0700118#ifdef CONFIG_SYSCTL
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300119extern struct ctl_table ether_table[];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#endif
Ben Dooks2fab35d2005-09-27 15:59:43 -0700121#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123#endif /* _LINUX_IF_ETHER_H */