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001: /* 002: * INET An implementation of the TCP/IP protocol suite for the LINUX 003: * operating system. INET is implemented using the BSD Socket 004: * interface as the means of communication with the user level. 005: * 006: * Global definitions for the ARP (RFC 826) protocol. 007: * 008: * Version: @(#)if_arp.h 1.0.1 04/16/93 009: * 010: * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 011: * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source. 012: * Ross Biro 013: * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 014: * Florian La Roche, 015: * Jonathan Layes <layes@loran.com> 016: * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25 017: * 018: * This program is free software; you can redistribute it and/or 019: * modify it under the terms of the GNU General Public License 020: * as published by the Free Software Foundation; either version 021: * 2 of the License, or (at your option) any later version. 022: */ 023: #ifndef _LINUX_IF_ARP_H 024: #define _LINUX_IF_ARP_H 025: 026: #include <linux/netdevice.h> 027: 028: /* ARP protocol HARDWARE identifiers. */ 029: #define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */ 030: #define ARPHRD_ETHER 1 /* Ethernet 10Mbps */ 031: #define ARPHRD_EETHER 2 /* Experimental Ethernet */ 032: #define ARPHRD_AX25 3 /* AX.25 Level 2 */ 033: #define ARPHRD_PRONET 4 /* PROnet token ring */ 034: #define ARPHRD_CHAOS 5 /* Chaosnet */ 035: #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */ 036: #define ARPHRD_ARCNET 7 /* ARCnet */ 037: #define ARPHRD_APPLETLK 8 /* APPLEtalk */ 038: #define ARPHRD_DLCI 15 /* Frame Relay DLCI */ 039: #define ARPHRD_ATM 19 /* ATM */ 040: #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */ 041: #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */ 042: #define ARPHRD_EUI64 27 /* EUI-64 */ 043: #define ARPHRD_INFINIBAND 32 /* InfiniBand */ 044: 045: /* Dummy types for non ARP hardware */ 046: #define ARPHRD_SLIP 256 047: #define ARPHRD_CSLIP 257 048: #define ARPHRD_SLIP6 258 049: #define ARPHRD_CSLIP6 259 050: #define ARPHRD_RSRVD 260 /* Notional KISS type */ 051: #define ARPHRD_ADAPT 264 052: #define ARPHRD_ROSE 270 053: #define ARPHRD_X25 271 /* CCITT X.25 */ 054: #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */ 055: #define ARPHRD_CAN 280 /* Controller Area Network */ 056: #define ARPHRD_PPP 512 057: #define ARPHRD_CISCO 513 /* Cisco HDLC */ 058: #define ARPHRD_HDLC ARPHRD_CISCO 059: #define ARPHRD_LAPB 516 /* LAPB */ 060: #define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ 061: #define ARPHRD_RAWHDLC 518 /* Raw HDLC */ 062: 063: #define ARPHRD_TUNNEL 768 /* IPIP tunnel */ 064: #define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ 065: #define ARPHRD_FRAD 770 /* Frame Relay Access Device */ 066: #define ARPHRD_SKIP 771 /* SKIP vif */ 067: #define ARPHRD_LOOPBACK 772 /* Loopback device */ 068: #define ARPHRD_LOCALTLK 773 /* Localtalk device */ 069: #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ 070: #define ARPHRD_BIF 775 /* AP1000 BIF */ 071: #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ 072: #define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ 073: #define ARPHRD_IPGRE 778 /* GRE over IP */ 074: #define ARPHRD_PIMREG 779 /* PIMSM register interface */ 075: #define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ 076: #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ 077: #define ARPHRD_ECONET 782 /* Acorn Econet */ 078: #define ARPHRD_IRDA 783 /* Linux-IrDA */ 079: /* ARP works differently on different FC media .. so */ 080: #define ARPHRD_FCPP 784 /* Point to point fibrechannel */ 081: #define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ 082: #define ARPHRD_FCPL 786 /* Fibrechannel public loop */ 083: #define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ 084: /* 787->799 reserved for fibrechannel media types */ 085: #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ 086: #define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ 087: #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ 088: #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ 089: #define ARPHRD_IEEE802154 804 090: 091: #define ARPHRD_PHONET 820 /* PhoNet media type */ 092: #define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */ 093: #define ARPHRD_CAIF 822 /* CAIF media type */ 094: 095: #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ 096: #define ARPHRD_NONE 0xFFFE /* zero header length */ 097: 098: /* ARP protocol opcodes. */ 099: #define ARPOP_REQUEST 1 /* ARP request */ 100: #define ARPOP_REPLY 2 /* ARP reply */ 101: #define ARPOP_RREQUEST 3 /* RARP request */ 102: #define ARPOP_RREPLY 4 /* RARP reply */ 103: #define ARPOP_InREQUEST 8 /* InARP request */ 104: #define ARPOP_InREPLY 9 /* InARP reply */ 105: #define ARPOP_NAK 10 /* (ATM)ARP NAK */ 106: 107: 108: /* ARP ioctl request. */ 109: struct arpreq { 110: struct sockaddr arp_pa; /* protocol address */ 111: struct sockaddr arp_ha; /* hardware address */ 112: int arp_flags; /* flags */ 113: struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ 114: char arp_dev[16]; 115: }; 116: 117: struct arpreq_old { 118: struct sockaddr arp_pa; /* protocol address */ 119: struct sockaddr arp_ha; /* hardware address */ 120: int arp_flags; /* flags */ 121: struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ 122: }; 123: 124: /* ARP Flag values. */ 125: #define ATF_COM 0x02 /* completed entry (ha valid) */ 126: #define ATF_PERM 0x04 /* permanent entry */ 127: #define ATF_PUBL 0x08 /* publish entry */ 128: #define ATF_USETRAILERS 0x10 /* has requested trailers */ 129: #define ATF_NETMASK 0x20 /* want to use a netmask (only 130: for proxy entries) */ 131: #define ATF_DONTPUB 0x40 /* don't answer this addresses */ 132: 133: /* 134: * This structure defines an ethernet arp header. 135: */ 136: 137: struct arphdr { 138: __be16 ar_hrd; /* format of hardware address */ 139: __be16 ar_pro; /* format of protocol address */ 140: unsigned char ar_hln; /* length of hardware address */ 141: unsigned char ar_pln; /* length of protocol address */ 142: __be16 ar_op; /* ARP opcode (command) */ 143: 144: #if 0 145: /* 146: * Ethernet looks like this : This bit is variable sized however... 147: */ 148: unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ 149: unsigned char ar_sip[4]; /* sender IP address */ 150: unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ 151: unsigned char ar_tip[4]; /* target IP address */ 152: #endif 153: 154: }; 155: 156: 157: #endif /* _LINUX_IF_ARP_H */ 158: