/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * Global definitions for the ARP (RFC 826) protocol. * * Version: @(#)if_arp.h 1.0.1 04/16/93 * * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988 * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source. * Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * Florian La Roche, * Jonathan Layes <layes@loran.com> * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_IF_ARP_H #define _LINUX_IF_ARP_H #include <linux/netdevice.h> /* ARP protocol HARDWARE identifiers. */ #define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */ #define ARPHRD_ETHER 1 /* Ethernet 10Mbps */ #define ARPHRD_EETHER 2 /* Experimental Ethernet */ #define ARPHRD_AX25 3 /* AX.25 Level 2 */ #define ARPHRD_PRONET 4 /* PROnet token ring */ #define ARPHRD_CHAOS 5 /* Chaosnet */ #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */ #define ARPHRD_ARCNET 7 /* ARCnet */ #define ARPHRD_APPLETLK 8 /* APPLEtalk */ #define ARPHRD_DLCI 15 /* Frame Relay DLCI */ #define ARPHRD_ATM 19 /* ATM */ #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */ #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */ #define ARPHRD_EUI64 27 /* EUI-64 */ #define ARPHRD_INFINIBAND 32 /* InfiniBand */ /* Dummy types for non ARP hardware */ #define ARPHRD_SLIP 256 #define ARPHRD_CSLIP 257 #define ARPHRD_SLIP6 258 #define ARPHRD_CSLIP6 259 #define ARPHRD_RSRVD 260 /* Notional KISS type */ #define ARPHRD_ADAPT 264 #define ARPHRD_ROSE 270 #define ARPHRD_X25 271 /* CCITT X.25 */ #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */ #define ARPHRD_CAN 280 /* Controller Area Network */ #define ARPHRD_PPP 512 #define ARPHRD_CISCO 513 /* Cisco HDLC */ #define ARPHRD_HDLC ARPHRD_CISCO #define ARPHRD_LAPB 516 /* LAPB */ #define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */ #define ARPHRD_RAWHDLC 518 /* Raw HDLC */ #define ARPHRD_RAWIP 519 /* Raw IP */ #define ARPHRD_TUNNEL 768 /* IPIP tunnel */ #define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */ #define ARPHRD_FRAD 770 /* Frame Relay Access Device */ #define ARPHRD_SKIP 771 /* SKIP vif */ #define ARPHRD_LOOPBACK 772 /* Loopback device */ #define ARPHRD_LOCALTLK 773 /* Localtalk device */ #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */ #define ARPHRD_BIF 775 /* AP1000 BIF */ #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */ #define ARPHRD_IPDDP 777 /* IP over DDP tunneller */ #define ARPHRD_IPGRE 778 /* GRE over IP */ #define ARPHRD_PIMREG 779 /* PIMSM register interface */ #define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */ #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */ #define ARPHRD_ECONET 782 /* Acorn Econet */ #define ARPHRD_IRDA 783 /* Linux-IrDA */ /* ARP works differently on different FC media .. so */ #define ARPHRD_FCPP 784 /* Point to point fibrechannel */ #define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */ #define ARPHRD_FCPL 786 /* Fibrechannel public loop */ #define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */ /* 787->799 reserved for fibrechannel media types */ #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */ #define ARPHRD_IEEE80211 801 /* IEEE 802.11 */ #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */ #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */ #define ARPHRD_IEEE802154 804 #define ARPHRD_IEEE802154_MONITOR 805 /* IEEE 802.15.4 network monitor */ #define ARPHRD_PHONET 820 /* PhoNet media type */ #define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */ #define ARPHRD_CAIF 822 /* CAIF media type */ #define ARPHRD_IP6GRE 823 /* GRE over IPv6 */ #define ARPHRD_NETLINK 824 /* Netlink header */ #define ARPHRD_6LOWPAN 825 /* IPv6 over LoWPAN */ #define ARPHRD_VSOCKMON 826 /* Vsock monitor header */ #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */ #define ARPHRD_NONE 0xFFFE /* zero header length */ /* ARP protocol opcodes. */ #define ARPOP_REQUEST 1 /* ARP request */ #define ARPOP_REPLY 2 /* ARP reply */ #define ARPOP_RREQUEST 3 /* RARP request */ #define ARPOP_RREPLY 4 /* RARP reply */ #define ARPOP_InREQUEST 8 /* InARP request */ #define ARPOP_InREPLY 9 /* InARP reply */ #define ARPOP_NAK 10 /* (ATM)ARP NAK */ /* ARP ioctl request. */ struct arpreq { struct sockaddr arp_pa; /* protocol address */ struct sockaddr arp_ha; /* hardware address */ int arp_flags; /* flags */ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ char arp_dev[IFNAMSIZ]; }; struct arpreq_old { struct sockaddr arp_pa; /* protocol address */ struct sockaddr arp_ha; /* hardware address */ int arp_flags; /* flags */ struct sockaddr arp_netmask; /* netmask (only for proxy arps) */ }; /* ARP Flag values. */ #define ATF_COM 0x02 /* completed entry (ha valid) */ #define ATF_PERM 0x04 /* permanent entry */ #define ATF_PUBL 0x08 /* publish entry */ #define ATF_USETRAILERS 0x10 /* has requested trailers */ #define ATF_NETMASK 0x20 /* want to use a netmask (only for proxy entries) */ #define ATF_DONTPUB 0x40 /* don't answer this addresses */ /* * This structure defines an ethernet arp header. */ struct arphdr { __be16 ar_hrd; /* format of hardware address */ __be16 ar_pro; /* format of protocol address */ unsigned char ar_hln; /* length of hardware address */ unsigned char ar_pln; /* length of protocol address */ __be16 ar_op; /* ARP opcode (command) */ #if 0 /* * Ethernet looks like this : This bit is variable sized however... */ unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ unsigned char ar_sip[4]; /* sender IP address */ unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ unsigned char ar_tip[4]; /* target IP address */ #endif }; #endif /* _LINUX_IF_ARP_H */