include/linux/if_ether.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2 /*
   3  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   4  *              operating system.  INET is implemented using the  BSD Socket
   5  *              interface as the means of communication with the user level.
   6  *
   7  *              Global definitions for the Ethernet IEEE 802.3 interface.
   8  *
   9  * Version:     @(#)if_ether.h  1.0.1a  02/08/94
  10  *
  11  * Author:      Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  12  *              Donald Becker, <becker@super.org>
  13  *              Alan Cox, <alan@lxorguk.ukuu.org.uk>
  14  *              Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
  15  *
  16  *              This program is free software; you can redistribute it and/or
  17  *              modify it under the terms of the GNU General Public License
  18  *              as published by the Free Software Foundation; either version
  19  *              2 of the License, or (at your option) any later version.
  20  */
  21
  22 #ifndef _LINUX_IF_ETHER_H
  23 #define _LINUX_IF_ETHER_H
  24
  25 #include <linux/types.h>
  26
  27 /*
  28  *      IEEE 802.3 Ethernet magic constants.  The frame sizes omit the preamble
  29  *      and FCS/CRC (frame check sequence).
  30  */
  31
  32 #define ETH_ALEN        6               /* Octets in one ethernet addr   */
  33 #define ETH_TLEN        2               /* Octets in ethernet type field */
  34 #define ETH_HLEN        14              /* Total octets in header.       */
  35 #define ETH_ZLEN        60              /* Min. octets in frame sans FCS */
  36 #define ETH_DATA_LEN    1500            /* Max. octets in payload        */
  37 #define ETH_FRAME_LEN   1514            /* Max. octets in frame sans FCS */
  38 #define ETH_FCS_LEN     4               /* Octets in the FCS             */
  39
  40 #define ETH_MIN_MTU     68              /* Min IPv4 MTU per RFC791      */
  41 #define ETH_MAX_MTU     0xFFFFU         /* 65535, same as IP_MAX_MTU    */
  42
  43 /*
  44  *      These are the defined Ethernet Protocol ID's.
  45  */
  46
  47 #define ETH_P_LOOP      0x0060          /* Ethernet Loopback packet     */
  48 #define ETH_P_PUP       0x0200          /* Xerox PUP packet             */
  49 #define ETH_P_PUPAT     0x0201          /* Xerox PUP Addr Trans packet  */
  50 #define ETH_P_TSN       0x22F0          /* TSN (IEEE 1722) packet       */
  51 #define ETH_P_ERSPAN2   0x22EB          /* ERSPAN version 2 (type III)  */
  52 #define ETH_P_IP        0x0800          /* Internet Protocol packet     */
  53 #define ETH_P_X25       0x0805          /* CCITT X.25                   */
  54 #define ETH_P_ARP       0x0806          /* Address Resolution packet    */
  55 #define ETH_P_BPQ       0x08FF          /* G8BPQ AX.25 Ethernet Packet  [ NOT AN OFFICIALLY REGISTERED ID ] */
  56 #define ETH_P_IEEEPUP   0x0a00          /* Xerox IEEE802.3 PUP packet */
  57 #define ETH_P_IEEEPUPAT 0x0a01          /* Xerox IEEE802.3 PUP Addr Trans packet */
  58 #define ETH_P_BATMAN    0x4305          /* B.A.T.M.A.N.-Advanced packet [ NOT AN OFFICIALLY REGISTERED ID ] */
  59 #define ETH_P_DEC       0x6000          /* DEC Assigned proto           */
  60 #define ETH_P_DNA_DL    0x6001          /* DEC DNA Dump/Load            */
  61 #define ETH_P_DNA_RC    0x6002          /* DEC DNA Remote Console       */
  62 #define ETH_P_DNA_RT    0x6003          /* DEC DNA Routing              */
  63 #define ETH_P_LAT       0x6004          /* DEC LAT                      */
  64 #define ETH_P_DIAG      0x6005          /* DEC Diagnostics              */
  65 #define ETH_P_CUST      0x6006          /* DEC Customer use             */
  66 #define ETH_P_SCA       0x6007          /* DEC Systems Comms Arch       */
  67 #define ETH_P_TEB       0x6558          /* Trans Ether Bridging         */
  68 #define ETH_P_RARP      0x8035          /* Reverse Addr Res packet      */
  69 #define ETH_P_ATALK     0x809B          /* Appletalk DDP                */
  70 #define ETH_P_AARP      0x80F3          /* Appletalk AARP               */
  71 #define ETH_P_8021Q     0x8100          /* 802.1Q VLAN Extended Header  */
  72 #define ETH_P_ERSPAN    0x88BE          /* ERSPAN type II               */
  73 #define ETH_P_IPX       0x8137          /* IPX over DIX                 */
  74 #define ETH_P_IPV6      0x86DD          /* IPv6 over bluebook           */
  75 #define ETH_P_PAUSE     0x8808          /* IEEE Pause frames. See 802.3 31B */
  76 #define ETH_P_SLOW      0x8809          /* Slow Protocol. See 802.3ad 43B */
  77 #define ETH_P_WCCP      0x883E          /* Web-cache coordination protocol
  78                                          * defined in draft-wilson-wrec-wccp-v2-00.txt */
  79 #define ETH_P_MPLS_UC   0x8847          /* MPLS Unicast traffic         */
  80 #define ETH_P_MPLS_MC   0x8848          /* MPLS Multicast traffic       */
  81 #define ETH_P_ATMMPOA   0x884c          /* MultiProtocol Over ATM       */
  82 #define ETH_P_PPP_DISC  0x8863          /* PPPoE discovery messages     */
  83 #define ETH_P_PPP_SES   0x8864          /* PPPoE session messages       */
  84 #define ETH_P_LINK_CTL  0x886c          /* HPNA, wlan link local tunnel */
  85 #define ETH_P_ATMFATE   0x8884          /* Frame-based ATM Transport
  86                                          * over Ethernet
  87                                          */
  88 #define ETH_P_PAE       0x888E          /* Port Access Entity (IEEE 802.1X) */
  89 #define ETH_P_AOE       0x88A2          /* ATA over Ethernet            */
  90 #define ETH_P_8021AD    0x88A8          /* 802.1ad Service VLAN         */
  91 #define ETH_P_802_EX1   0x88B5          /* 802.1 Local Experimental 1.  */
  92 #define ETH_P_PREAUTH   0x88C7          /* 802.11 Preauthentication */
  93 #define ETH_P_TIPC      0x88CA          /* TIPC                         */
  94 #define ETH_P_MACSEC    0x88E5          /* 802.1ae MACsec */
  95 #define ETH_P_8021AH    0x88E7          /* 802.1ah Backbone Service Tag */
  96 #define ETH_P_MVRP      0x88F5          /* 802.1Q MVRP                  */
  97 #define ETH_P_1588      0x88F7          /* IEEE 1588 Timesync */
  98 #define ETH_P_NCSI      0x88F8          /* NCSI protocol                */
  99 #define ETH_P_PRP       0x88FB          /* IEC 62439-3 PRP/HSRv0        */
 100 #define ETH_P_FCOE      0x8906          /* Fibre Channel over Ethernet  */
 101 #define ETH_P_IBOE      0x8915          /* Infiniband over Ethernet     */
 102 #define ETH_P_TDLS      0x890D          /* TDLS */
 103 #define ETH_P_FIP       0x8914          /* FCoE Initialization Protocol */
 104 #define ETH_P_80221     0x8917          /* IEEE 802.21 Media Independent Handover Protocol */
 105 #define ETH_P_HSR       0x892F          /* IEC 62439-3 HSRv1    */
 106 #define ETH_P_NSH       0x894F          /* Network Service Header */
 107 #define ETH_P_LOOPBACK  0x9000          /* Ethernet loopback packet, per IEEE 802.3 */
 108 #define ETH_P_QINQ1     0x9100          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
 109 #define ETH_P_QINQ2     0x9200          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
 110 #define ETH_P_QINQ3     0x9300          /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */
 111 #define ETH_P_EDSA      0xDADA          /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */
 112 #define ETH_P_IFE       0xED3E          /* ForCES inter-FE LFB type */
 113 #define ETH_P_AF_IUCV   0xFBFB          /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */
 114
 115 #define ETH_P_802_3_MIN 0x0600          /* If the value in the ethernet type is less than this value
 116                                          * then the frame is Ethernet II. Else it is 802.3 */
 117
 118 /*
 119  *      Non DIX types. Won't clash for 1500 types.
 120  */
 121
 122 #define ETH_P_802_3     0x0001          /* Dummy type for 802.3 frames  */
 123 #define ETH_P_AX25      0x0002          /* Dummy protocol id for AX.25  */
 124 #define ETH_P_ALL       0x0003          /* Every packet (be careful!!!) */
 125 #define ETH_P_802_2     0x0004          /* 802.2 frames                 */
 126 #define ETH_P_SNAP      0x0005          /* Internal only                */
 127 #define ETH_P_DDCMP     0x0006          /* DEC DDCMP: Internal only     */
 128 #define ETH_P_WAN_PPP   0x0007          /* Dummy type for WAN PPP frames*/
 129 #define ETH_P_PPP_MP    0x0008          /* Dummy type for PPP MP frames */
 130 #define ETH_P_LOCALTALK 0x0009          /* Localtalk pseudo type        */
 131 #define ETH_P_CAN       0x000C          /* CAN: Controller Area Network */
 132 #define ETH_P_CANFD     0x000D          /* CANFD: CAN flexible data rate*/
 133 #define ETH_P_PPPTALK   0x0010          /* Dummy type for Atalk over PPP*/
 134 #define ETH_P_TR_802_2  0x0011          /* 802.2 frames                 */
 135 #define ETH_P_MOBITEX   0x0015          /* Mobitex (kaz@cafe.net)       */
 136 #define ETH_P_CONTROL   0x0016          /* Card specific control frames */
 137 #define ETH_P_IRDA      0x0017          /* Linux-IrDA                   */
 138 #define ETH_P_ECONET    0x0018          /* Acorn Econet                 */
 139 #define ETH_P_HDLC      0x0019          /* HDLC frames                  */
 140 #define ETH_P_ARCNET    0x001A          /* 1A for ArcNet :-)            */
 141 #define ETH_P_DSA       0x001B          /* Distributed Switch Arch.     */
 142 #define ETH_P_TRAILER   0x001C          /* Trailer switch tagging       */
 143 #define ETH_P_PHONET    0x00F5          /* Nokia Phonet frames          */
 144 #define ETH_P_IEEE802154 0x00F6         /* IEEE802.15.4 frame           */
 145 #define ETH_P_CAIF      0x00F7          /* ST-Ericsson CAIF protocol    */
 146 #define ETH_P_XDSA      0x00F8          /* Multiplexed DSA protocol     */
 147 #define ETH_P_MAP       0x00F9          /* Qualcomm multiplexing and
 148                                          * aggregation protocol
 149                                          */
 150
 151 /*
 152  *      This is an Ethernet frame header.
 153  */
 154
 155 /* allow libcs like musl to deactivate this, glibc does not implement this. */
 156 #ifndef __UAPI_DEF_ETHHDR
 157 #define __UAPI_DEF_ETHHDR               1
 158 #endif
 159
 160 #if __UAPI_DEF_ETHHDR
 161 struct ethhdr {
 162         unsigned char   h_dest[ETH_ALEN];       /* destination eth addr */
 163         unsigned char   h_source[ETH_ALEN];     /* source ether addr    */
 164         __be16          h_proto;                /* packet type ID field */
 165 } __attribute__((packed));
 166 #endif
 167
 168
 169 #endif /* _LINUX_IF_ETHER_H */