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