84 lines
3 KiB
C
84 lines
3 KiB
C
|
/*
|
||
|
|
* 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, <bir7@leland.Stanford.Edu>
|
||
|
|
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
|
||
|
|
/* 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- huh? */
|
||
|
|
#define ARPHRD_ARCNET 7 /* ARCnet */
|
||
|
|
#define ARPHRD_APPLETLK 8 /* APPLEtalk */
|
||
|
|
|
||
|
|
/* 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 */
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Address Resolution Protocol.
|
||
|
|
*
|
||
|
|
* See RFC 826 for protocol description. ARP packets are variable
|
||
|
|
* in size; the arphdr structure defines the fixed-length portion.
|
||
|
|
* Protocol type values are the same as those for 10 Mb/s Ethernet.
|
||
|
|
* It is followed by the variable-sized fields ar_sha, arp_spa,
|
||
|
|
* arp_tha and arp_tpa in that order, according to the lengths
|
||
|
|
* specified. Field names used correspond to RFC 826.
|
||
|
|
*/
|
||
|
|
struct arphdr {
|
||
|
|
unsigned short ar_hrd; /* format of hardware address */
|
||
|
|
unsigned short ar_pro; /* format of protocol address */
|
||
|
|
unsigned char ar_hln; /* length of hardware address */
|
||
|
|
unsigned char ar_pln; /* length of protocol address */
|
||
|
|
unsigned short ar_op; /* ARP opcode (command) */
|
||
|
|
|
||
|
|
/* The rest is variable in size, according to the sizes above. */
|
||
|
|
#if 0
|
||
|
|
unsigned char ar_sha[]; /* sender hardware address */
|
||
|
|
unsigned char ar_spa[]; /* sender protocol address */
|
||
|
|
unsigned char ar_tha[]; /* target hardware address */
|
||
|
|
unsigned char ar_tpa[]; /* target protocol address */
|
||
|
|
#endif /* not actually included! */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* ARP ioctl request. */
|
||
|
|
struct arpreq {
|
||
|
|
struct sockaddr arp_pa; /* protocol address */
|
||
|
|
struct sockaddr arp_ha; /* hardware address */
|
||
|
|
int arp_flags; /* flags */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ARP Flag values. */
|
||
|
|
#define ATF_INUSE 0x01 /* entry in use */
|
||
|
|
#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 */
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _LINUX_IF_ARP_H */
|