1f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* 2f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * INET An implementation of the TCP/IP protocol suite for the LINUX 3f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * operating system. INET is implemented using the BSD Socket 4f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * interface as the means of communication with the user level. 5f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * 6f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Global definitions for the ARP (RFC 826) protocol. 7f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * 8f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Version: @(#)if_arp.h 1.0.1 04/16/93 9f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * 10f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 11f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source. 12f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Ross Biro 13f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 14f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Florian La Roche, 15f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Jonathan Layes <layes@loran.com> 16f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25 17f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * 18f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * This program is free software; you can redistribute it and/or 19f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * modify it under the terms of the GNU General Public License 20f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * as published by the Free Software Foundation; either version 21f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * 2 of the License, or (at your option) any later version. 22f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger */ 23f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#ifndef _LINUX_IF_ARP_H 24f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define _LINUX_IF_ARP_H 25f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 26f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#include <linux/netdevice.h> 27f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 28f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* ARP protocol HARDWARE identifiers. */ 29f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */ 30f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ETHER 1 /* Ethernet 10Mbps */ 31f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_EETHER 2 /* Experimental Ethernet */ 32f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_AX25 3 /* AX.25 Level 2 */ 33f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_PRONET 4 /* PROnet token ring */ 34f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_CHAOS 5 /* Chaosnet */ 35f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */ 36f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ARCNET 7 /* ARCnet */ 37f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_APPLETLK 8 /* APPLEtalk */ 38f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_DLCI 15 /* Frame Relay DLCI */ 39f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ATM 19 /* ATM */ 40f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */ 41f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */ 42f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_EUI64 27 /* EUI-64 */ 43f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_INFINIBAND 32 /* InfiniBand */ 44f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 45f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* Dummy types for non ARP hardware */ 46f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_SLIP 256 47f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_CSLIP 257 48f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_SLIP6 258 49f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_CSLIP6 259 50f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_RSRVD 260 /* Notional KISS type */ 51f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ADAPT 264 52f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ROSE 270 53f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_X25 271 /* CCITT X.25 */ 54f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */ 55f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_CAN 280 /* Controller Area Network */ 56f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_PPP 512 57f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_CISCO 513 /* Cisco HDLC */ 58f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_HDLC ARPHRD_CISCO 59f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_LAPB 516 /* LAPB */ 60f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ 61f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_RAWHDLC 518 /* Raw HDLC */ 62f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 63f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_TUNNEL 768 /* IPIP tunnel */ 64f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ 65f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FRAD 770 /* Frame Relay Access Device */ 66f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_SKIP 771 /* SKIP vif */ 67f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_LOOPBACK 772 /* Loopback device */ 68f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_LOCALTLK 773 /* Localtalk device */ 69f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ 70f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_BIF 775 /* AP1000 BIF */ 71f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ 72f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ 73f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IPGRE 778 /* GRE over IP */ 74f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_PIMREG 779 /* PIMSM register interface */ 75f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ 76f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ 77f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_ECONET 782 /* Acorn Econet */ 78f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IRDA 783 /* Linux-IrDA */ 79f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* ARP works differently on different FC media .. so */ 80f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FCPP 784 /* Point to point fibrechannel */ 81f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ 82f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FCPL 786 /* Fibrechannel public loop */ 83f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ 84f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger /* 787->799 reserved for fibrechannel media types */ 85f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ 86f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ 87f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ 88f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ 89f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_IEEE802154 804 90f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 91f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_PHONET 820 /* PhoNet media type */ 92f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */ 93b4397f580e6eb3f20e8c433833be20283b44a3bcStephen Hemminger#define ARPHRD_CAIF 822 /* CAIF media type */ 94f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 95f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ 96f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPHRD_NONE 0xFFFE /* zero header length */ 97f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 98f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* ARP protocol opcodes. */ 99f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_REQUEST 1 /* ARP request */ 100f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_REPLY 2 /* ARP reply */ 101f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_RREQUEST 3 /* RARP request */ 102f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_RREPLY 4 /* RARP reply */ 103f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_InREQUEST 8 /* InARP request */ 104f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_InREPLY 9 /* InARP reply */ 105f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ARPOP_NAK 10 /* (ATM)ARP NAK */ 106f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 107f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 108f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* ARP ioctl request. */ 109f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemmingerstruct arpreq { 110f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_pa; /* protocol address */ 111f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_ha; /* hardware address */ 112f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger int arp_flags; /* flags */ 113f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ 114f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger char arp_dev[16]; 115f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger}; 116f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 117f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemmingerstruct arpreq_old { 118f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_pa; /* protocol address */ 119f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_ha; /* hardware address */ 120f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger int arp_flags; /* flags */ 121f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ 122f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger}; 123f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 124f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* ARP Flag values. */ 125f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_COM 0x02 /* completed entry (ha valid) */ 126f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_PERM 0x04 /* permanent entry */ 127f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_PUBL 0x08 /* publish entry */ 128f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_USETRAILERS 0x10 /* has requested trailers */ 129f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_NETMASK 0x20 /* want to use a netmask (only 130f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger for proxy entries) */ 131f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#define ATF_DONTPUB 0x40 /* don't answer this addresses */ 132f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 133f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger/* 134f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * This structure defines an ethernet arp header. 135f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger */ 136f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 137ab322673298bd0b8927cdd9d11f3d36af5941b93Stephen Hemmingerstruct arphdr { 138f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger __be16 ar_hrd; /* format of hardware address */ 139f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger __be16 ar_pro; /* format of protocol address */ 140f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_hln; /* length of hardware address */ 141f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_pln; /* length of protocol address */ 142f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger __be16 ar_op; /* ARP opcode (command) */ 143f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 144f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#if 0 145f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger /* 146f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger * Ethernet looks like this : This bit is variable sized however... 147f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger */ 148f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ 149f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_sip[4]; /* sender IP address */ 150f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ 151f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger unsigned char ar_tip[4]; /* target IP address */ 152f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#endif 153f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 154f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger}; 155f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 156f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger 157f0309aa493d966f0b32a21a28d9fd156f4c41860Stephen Hemminger#endif /* _LINUX_IF_ARP_H */ 158