172 lines
6.4 KiB
C
172 lines
6.4 KiB
C
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the ARP (RFC 826) protocol.
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*
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* Version: @(#)if_arp.h 1.0.1 04/16/93
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*
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* Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
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* Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
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* Ross Biro
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Florian La Roche,
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* Jonathan Layes <layes@loran.com>
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* Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IF_ARP_H
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#define _LINUX_IF_ARP_H
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#include <linux/netdevice.h>
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/* ARP protocol HARDWARE identifiers. */
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#define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */
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#define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
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#define ARPHRD_EETHER 2 /* Experimental Ethernet */
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#define ARPHRD_AX25 3 /* AX.25 Level 2 */
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#define ARPHRD_PRONET 4 /* PROnet token ring */
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#define ARPHRD_CHAOS 5 /* Chaosnet */
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#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */
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#define ARPHRD_ARCNET 7 /* ARCnet */
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#define ARPHRD_APPLETLK 8 /* APPLEtalk */
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#define ARPHRD_DLCI 15 /* Frame Relay DLCI */
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#define ARPHRD_ATM 19 /* ATM */
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#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */
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#define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */
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#define ARPHRD_EUI64 27 /* EUI-64 */
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#define ARPHRD_INFINIBAND 32 /* InfiniBand */
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/* Dummy types for non ARP hardware */
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#define ARPHRD_SLIP 256
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#define ARPHRD_CSLIP 257
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#define ARPHRD_SLIP6 258
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#define ARPHRD_CSLIP6 259
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#define ARPHRD_RSRVD 260 /* Notional KISS type */
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#define ARPHRD_ADAPT 264
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#define ARPHRD_ROSE 270
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#define ARPHRD_X25 271 /* CCITT X.25 */
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#define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */
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#define ARPHRD_CAN 280 /* Controller Area Network */
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#define ARPHRD_PPP 512
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#define ARPHRD_CISCO 513 /* Cisco HDLC */
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#define ARPHRD_HDLC ARPHRD_CISCO
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#define ARPHRD_LAPB 516 /* LAPB */
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#define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */
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#define ARPHRD_RAWHDLC 518 /* Raw HDLC */
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#define ARPHRD_TUNNEL 768 /* IPIP tunnel */
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#define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */
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#define ARPHRD_FRAD 770 /* Frame Relay Access Device */
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#define ARPHRD_SKIP 771 /* SKIP vif */
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#define ARPHRD_LOOPBACK 772 /* Loopback device */
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#define ARPHRD_LOCALTLK 773 /* Localtalk device */
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#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */
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#define ARPHRD_BIF 775 /* AP1000 BIF */
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#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */
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#define ARPHRD_IPDDP 777 /* IP over DDP tunneller */
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#define ARPHRD_IPGRE 778 /* GRE over IP */
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#define ARPHRD_PIMREG 779 /* PIMSM register interface */
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#define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */
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#define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */
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#define ARPHRD_ECONET 782 /* Acorn Econet */
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#define ARPHRD_IRDA 783 /* Linux-IrDA */
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/* ARP works differently on different FC media .. so */
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#define ARPHRD_FCPP 784 /* Point to point fibrechannel */
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#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */
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#define ARPHRD_FCPL 786 /* Fibrechannel public loop */
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#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */
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/* 787->799 reserved for fibrechannel media types */
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#define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */
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#define ARPHRD_IEEE80211 801 /* IEEE 802.11 */
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#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
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#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */
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#define ARPHRD_IEEE802154 804
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#define ARPHRD_PHONET 820 /* PhoNet media type */
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#define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */
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#define ARPHRD_CAIF 822 /* CAIF media type */
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#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */
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#define ARPHRD_NONE 0xFFFE /* zero header length */
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/* ARP protocol opcodes. */
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#define ARPOP_REQUEST 1 /* ARP request */
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#define ARPOP_REPLY 2 /* ARP reply */
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#define ARPOP_RREQUEST 3 /* RARP request */
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#define ARPOP_RREPLY 4 /* RARP reply */
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#define ARPOP_InREQUEST 8 /* InARP request */
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#define ARPOP_InREPLY 9 /* InARP reply */
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#define ARPOP_NAK 10 /* (ATM)ARP NAK */
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/* ARP ioctl request. */
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struct arpreq {
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struct sockaddr arp_pa; /* protocol address */
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struct sockaddr arp_ha; /* hardware address */
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int arp_flags; /* flags */
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struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
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char arp_dev[16];
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};
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struct arpreq_old {
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struct sockaddr arp_pa; /* protocol address */
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struct sockaddr arp_ha; /* hardware address */
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int arp_flags; /* flags */
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struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
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};
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/* ARP Flag values. */
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#define ATF_COM 0x02 /* completed entry (ha valid) */
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#define ATF_PERM 0x04 /* permanent entry */
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#define ATF_PUBL 0x08 /* publish entry */
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#define ATF_USETRAILERS 0x10 /* has requested trailers */
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#define ATF_NETMASK 0x20 /* want to use a netmask (only
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for proxy entries) */
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#define ATF_DONTPUB 0x40 /* don't answer this addresses */
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/*
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* This structure defines an ethernet arp header.
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*/
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struct arphdr {
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__be16 ar_hrd; /* format of hardware address */
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__be16 ar_pro; /* format of protocol address */
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unsigned char ar_hln; /* length of hardware address */
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unsigned char ar_pln; /* length of protocol address */
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__be16 ar_op; /* ARP opcode (command) */
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#if 0
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/*
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* Ethernet looks like this : This bit is variable sized however...
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*/
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unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
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unsigned char ar_sip[4]; /* sender IP address */
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unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
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unsigned char ar_tip[4]; /* target IP address */
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#endif
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};
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#ifdef __KERNEL__
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#include <linux/skbuff.h>
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static inline struct arphdr *arp_hdr(const struct sk_buff *skb)
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{
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return (struct arphdr *)skb_network_header(skb);
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}
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static inline int arp_hdr_len(struct net_device *dev)
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{
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/* ARP header, plus 2 device addresses, plus 2 IP addresses. */
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return sizeof(struct arphdr) + (dev->addr_len + sizeof(u32)) * 2;
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}
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#endif
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#endif /* _LINUX_IF_ARP_H */
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