github.com/cilium/cilium@v1.16.2/bpf/include/linux/if_ether.h (about) 1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2 /* Copyright Authors of the Linux kernel */ 3 /* 4 * INET An implementation of the TCP/IP protocol suite for the LINUX 5 * operating system. INET is implemented using the BSD Socket 6 * interface as the means of communication with the user level. 7 * 8 * Global definitions for the Ethernet IEEE 802.3 interface. 9 * 10 * Version: @(#)if_ether.h 1.0.1a 02/08/94 11 * 12 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 13 * Donald Becker, <becker@super.org> 14 * Alan Cox, <alan@lxorguk.ukuu.org.uk> 15 * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk> 16 * 17 * This program is free software; you can redistribute it and/or 18 * modify it under the terms of the GNU General Public License 19 * as published by the Free Software Foundation; either version 20 * 2 of the License, or (at your option) any later version. 21 */ 22 23 #pragma once 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 /* __ETH_HLEN is out of sync with the kernel's if_ether.h. In Cilium datapath 34 * we use ETH_HLEN which can be loaded via static data, and for L2-less devs 35 * it's 0. To avoid replacing every occurrence of ETH_HLEN in the datapath, 36 * we prefixed the kernel's ETH_HLEN instead. 37 */ 38 #define __ETH_HLEN 14 /* Total octets in header. */ 39 #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ 40 #define ETH_DATA_LEN 1500 /* Max. octets in payload */ 41 #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ 42 #define ETH_FCS_LEN 4 /* Octets in the FCS */ 43 44 /* 45 * These are the defined Ethernet Protocol ID's. 46 */ 47 48 #define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ 49 #define ETH_P_PUP 0x0200 /* Xerox PUP packet */ 50 #define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ 51 #define ETH_P_TSN 0x22F0 /* TSN (IEEE 1722) packet */ 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_IPX 0x8137 /* IPX over DIX */ 73 #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ 74 #define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */ 75 #define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */ 76 #define ETH_P_WCCP 0x883E /* Web-cache coordination protocol 77 * defined in draft-wilson-wrec-wccp-v2-00.txt */ 78 #define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ 79 #define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ 80 #define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ 81 #define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ 82 #define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ 83 #define ETH_P_LINK_CTL 0x886c /* HPNA, wlan link local tunnel */ 84 #define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport 85 * over Ethernet 86 */ 87 #define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ 88 #define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ 89 #define ETH_P_8021AD 0x88A8 /* 802.1ad Service VLAN */ 90 #define ETH_P_802_EX1 0x88B5 /* 802.1 Local Experimental 1. */ 91 #define ETH_P_TIPC 0x88CA /* TIPC */ 92 #define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */ 93 #define ETH_P_MVRP 0x88F5 /* 802.1Q MVRP */ 94 #define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */ 95 #define ETH_P_PRP 0x88FB /* IEC 62439-3 PRP/HSRv0 */ 96 #define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */ 97 #define ETH_P_TDLS 0x890D /* TDLS */ 98 #define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */ 99 #define ETH_P_80221 0x8917 /* IEEE 802.21 Media Independent Handover Protocol */ 100 #define ETH_P_LOOPBACK 0x9000 /* Ethernet loopback packet, per IEEE 802.3 */ 101 #define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ 102 #define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ 103 #define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ 104 #define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */ 105 #define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */ 106 107 #define ETH_P_802_3_MIN 0x0600 /* If the value in the ethernet type is less than this value 108 * then the frame is Ethernet II. Else it is 802.3 */ 109 110 /* 111 * Non DIX types. Won't clash for 1500 types. 112 */ 113 114 #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ 115 #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ 116 #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ 117 #define ETH_P_802_2 0x0004 /* 802.2 frames */ 118 #define ETH_P_SNAP 0x0005 /* Internal only */ 119 #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ 120 #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ 121 #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ 122 #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ 123 #define ETH_P_CAN 0x000C /* CAN: Controller Area Network */ 124 #define ETH_P_CANFD 0x000D /* CANFD: CAN flexible data rate*/ 125 #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ 126 #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ 127 #define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ 128 #define ETH_P_CONTROL 0x0016 /* Card specific control frames */ 129 #define ETH_P_IRDA 0x0017 /* Linux-IrDA */ 130 #define ETH_P_ECONET 0x0018 /* Acorn Econet */ 131 #define ETH_P_HDLC 0x0019 /* HDLC frames */ 132 #define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */ 133 #define ETH_P_DSA 0x001B /* Distributed Switch Arch. */ 134 #define ETH_P_TRAILER 0x001C /* Trailer switch tagging */ 135 #define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */ 136 #define ETH_P_IEEE802154 0x00F6 /* IEEE802.15.4 frame */ 137 #define ETH_P_CAIF 0x00F7 /* ST-Ericsson CAIF protocol */ 138 #define ETH_P_XDSA 0x00F8 /* Multiplexed DSA protocol */ 139 140 /* 141 * This is an Ethernet frame header. 142 */ 143 144 struct ethhdr { 145 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 146 unsigned char h_source[ETH_ALEN]; /* source ether addr */ 147 __be16 h_proto; /* packet type ID field */ 148 } __attribute__((packed));