linux/include/linux/if_ether.h
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   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@lxorguk.ukuu.org.uk>
  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#include <linux/types.h>
  25
  26/*
  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#define ETH_FCS_LEN     4               /* Octets in the FCS             */
  37
  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       */
  59#define ETH_P_TEB       0x6558          /* Trans Ether Bridging         */
  60#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           */
  66#define ETH_P_PAUSE     0x8808          /* IEEE Pause frames. See 802.3 31B */
  67#define ETH_P_SLOW      0x8809          /* Slow Protocol. See 802.3ad 43B */
  68#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_LINK_CTL  0x886c          /* HPNA, wlan link local tunnel */
  76#define ETH_P_ATMFATE   0x8884          /* Frame-based ATM Transport
  77                                         * over Ethernet
  78                                         */
  79#define ETH_P_PAE       0x888E          /* Port Access Entity (IEEE 802.1X) */
  80#define ETH_P_AOE       0x88A2          /* ATA over Ethernet            */
  81#define ETH_P_8021AD    0x88A8          /* 802.1ad Service VLAN         */
  82#define ETH_P_802_EX1   0x88B5          /* 802.1 Local Experimental 1.  */
  83#define ETH_P_TIPC      0x88CA          /* TIPC                         */
  84#define ETH_P_8021AH    0x88E7          /* 802.1ah Backbone Service Tag */
  85#define ETH_P_1588      0x88F7          /* IEEE 1588 Timesync */
  86#define ETH_P_FCOE      0x8906          /* Fibre Channel over Ethernet  */
  87#define ETH_P_TDLS      0x890D          /* TDLS */
  88#define ETH_P_FIP       0x8914          /* FCoE Initialization Protocol */
  89#define ETH_P_QINQ1     0x9100          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
  90#define ETH_P_QINQ2     0x9200          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
  91#define ETH_P_QINQ3     0x9300          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
  92#define ETH_P_EDSA      0xDADA          /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
  93#define ETH_P_AF_IUCV   0xFBFB          /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */
  94
  95/*
  96 *      Non DIX types. Won't clash for 1500 types.
  97 */
  98
  99#define ETH_P_802_3     0x0001          /* Dummy type for 802.3 frames  */
 100#define ETH_P_AX25      0x0002          /* Dummy protocol id for AX.25  */
 101#define ETH_P_ALL       0x0003          /* Every packet (be careful!!!) */
 102#define ETH_P_802_2     0x0004          /* 802.2 frames                 */
 103#define ETH_P_SNAP      0x0005          /* Internal only                */
 104#define ETH_P_DDCMP     0x0006          /* DEC DDCMP: Internal only     */
 105#define ETH_P_WAN_PPP   0x0007          /* Dummy type for WAN PPP frames*/
 106#define ETH_P_PPP_MP    0x0008          /* Dummy type for PPP MP frames */
 107#define ETH_P_LOCALTALK 0x0009          /* Localtalk pseudo type        */
 108#define ETH_P_CAN       0x000C          /* CAN: Controller Area Network */
 109#define ETH_P_CANFD     0x000D          /* CANFD: CAN flexible data rate*/
 110#define ETH_P_PPPTALK   0x0010          /* Dummy type for Atalk over PPP*/
 111#define ETH_P_TR_802_2  0x0011          /* 802.2 frames                 */
 112#define ETH_P_MOBITEX   0x0015          /* Mobitex (kaz@cafe.net)       */
 113#define ETH_P_CONTROL   0x0016          /* Card specific control frames */
 114#define ETH_P_IRDA      0x0017          /* Linux-IrDA                   */
 115#define ETH_P_ECONET    0x0018          /* Acorn Econet                 */
 116#define ETH_P_HDLC      0x0019          /* HDLC frames                  */
 117#define ETH_P_ARCNET    0x001A          /* 1A for ArcNet :-)            */
 118#define ETH_P_DSA       0x001B          /* Distributed Switch Arch.     */
 119#define ETH_P_TRAILER   0x001C          /* Trailer switch tagging       */
 120#define ETH_P_PHONET    0x00F5          /* Nokia Phonet frames          */
 121#define ETH_P_IEEE802154 0x00F6         /* IEEE802.15.4 frame           */
 122#define ETH_P_CAIF      0x00F7          /* ST-Ericsson CAIF protocol    */
 123
 124/*
 125 *      This is an Ethernet frame header.
 126 */
 127
 128struct ethhdr {
 129        unsigned char   h_dest[ETH_ALEN];       /* destination eth addr */
 130        unsigned char   h_source[ETH_ALEN];     /* source ether addr    */
 131        __be16          h_proto;                /* packet type ID field */
 132} __attribute__((packed));
 133
 134#ifdef __KERNEL__
 135#include <linux/skbuff.h>
 136
 137static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
 138{
 139        return (struct ethhdr *)skb_mac_header(skb);
 140}
 141
 142int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
 143
 144int mac_pton(const char *s, u8 *mac);
 145extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
 146
 147#endif
 148
 149#endif  /* _LINUX_IF_ETHER_H */
 150
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