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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 */
Auke Kok2053ed02007-05-15 15:29:16 -070036#define ETH_FCS_LEN 4 /* Octets in the FCS */
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
38/*
39 * These are the defined Ethernet Protocol ID's.
40 */
41
42#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */
43#define ETH_P_PUP 0x0200 /* Xerox PUP packet */
44#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */
45#define ETH_P_IP 0x0800 /* Internet Protocol packet */
46#define ETH_P_X25 0x0805 /* CCITT X.25 */
47#define ETH_P_ARP 0x0806 /* Address Resolution packet */
48#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */
49#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */
50#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */
51#define ETH_P_DEC 0x6000 /* DEC Assigned proto */
52#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */
53#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */
54#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */
55#define ETH_P_LAT 0x6004 /* DEC LAT */
56#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */
57#define ETH_P_CUST 0x6006 /* DEC Customer use */
58#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */
Herbert Xue1a80002008-10-09 12:00:17 -070059#define ETH_P_TEB 0x6558 /* Trans Ether Bridging */
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */
61#define ETH_P_ATALK 0x809B /* Appletalk DDP */
62#define ETH_P_AARP 0x80F3 /* Appletalk AARP */
63#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */
64#define ETH_P_IPX 0x8137 /* IPX over DIX */
65#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */
Stephen Hemminger2111f8b2007-04-25 22:05:55 -070066#define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */
Jay Vosburgh8f903c72006-02-21 16:36:44 -080067#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */
Linus Torvalds1da177e2005-04-16 15:20:36 -070068#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol
69 * defined in draft-wilson-wrec-wccp-v2-00.txt */
70#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */
71#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */
72#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */
73#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */
74#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */
75#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport
76 * over Ethernet
77 */
Jasper Bryant-Greenefef16432008-08-03 11:30:55 +120078#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070079#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */
Per Liden33a9c4d2006-01-16 11:42:12 +010080#define ETH_P_TIPC 0x88CA /* TIPC */
Lennert Buytenhek91da11f2008-10-07 13:44:02 +000081#define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83/*
84 * Non DIX types. Won't clash for 1500 types.
85 */
86
87#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */
88#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */
89#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */
90#define ETH_P_802_2 0x0004 /* 802.2 frames */
91#define ETH_P_SNAP 0x0005 /* Internal only */
92#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */
93#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/
94#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */
95#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */
Oliver Hartkoppcd05acf2007-12-16 15:59:24 -080096#define ETH_P_CAN 0x000C /* Controller Area Network */
Linus Torvalds1da177e2005-04-16 15:20:36 -070097#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/
98#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */
99#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */
100#define ETH_P_CONTROL 0x0016 /* Card specific control frames */
101#define ETH_P_IRDA 0x0017 /* Linux-IrDA */
102#define ETH_P_ECONET 0x0018 /* Acorn Econet */
103#define ETH_P_HDLC 0x0019 /* HDLC frames */
104#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */
Lennert Buytenhekcf85d082008-10-07 13:45:02 +0000105#define ETH_P_DSA 0x001B /* Distributed Switch Arch. */
Lennert Buytenhek396138f02008-10-07 13:46:07 +0000106#define ETH_P_TRAILER 0x001C /* Trailer switch tagging */
Remi Denis-Courmontbce7b152008-09-22 19:51:15 -0700107#define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108
109/*
110 * This is an Ethernet frame header.
111 */
112
113struct ethhdr {
114 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
115 unsigned char h_source[ETH_ALEN]; /* source ether addr */
Pavel Roskinac57d042005-11-10 13:03:08 -0800116 __be16 h_proto; /* packet type ID field */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117} __attribute__((packed));
118
119#ifdef __KERNEL__
120#include <linux/skbuff.h>
121
122static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
123{
Arnaldo Carvalho de Melo98e399f2007-03-19 15:33:04 -0700124 return (struct ethhdr *)skb_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125}
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300126
Stephen Hemminger3b04ddd2007-10-09 01:40:57 -0700127int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
128
Ben Dooks2fab35d2005-09-27 15:59:43 -0700129#ifdef CONFIG_SYSCTL
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -0300130extern struct ctl_table ether_table[];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#endif
Joe Perches0795af52007-10-03 17:59:30 -0700132
Michael Chan7ffc49a2007-12-24 21:28:09 -0800133extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
134
Joe Perches0795af52007-10-03 17:59:30 -0700135/*
136 * Display a 6 byte device address (MAC) in a readable format.
137 */
David S. Miller55b01e82008-02-23 20:09:11 -0800138extern char *print_mac(char *buf, const unsigned char *addr);
139#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
Michael Chan7ffc49a2007-12-24 21:28:09 -0800140#define MAC_BUF_SIZE 18
141#define DECLARE_MAC_BUF(var) char var[MAC_BUF_SIZE] __maybe_unused
Joe Perches0795af52007-10-03 17:59:30 -0700142
Ben Dooks2fab35d2005-09-27 15:59:43 -0700143#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145#endif /* _LINUX_IF_ETHER_H */