1 /*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Global definitions for the ARP (RFC 826) protocol.
7 *
8 * Version: @(#)if_arp.h 1.0.1 04/16/93
9 *
10 * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
11 * Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
12 * Ross Biro, <bir7@leland.Stanford.Edu>
13 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 */
20 #ifndef _LINUX_IF_ARP_H
21 #define _LINUX_IF_ARP_H
22
23 /* ARP protocol HARDWARE identifiers. */
24 #define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */
25 #define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
26 #define ARPHRD_EETHER 2 /* Experimental Ethernet */
27 #define ARPHRD_AX25 3 /* AX.25 Level 2 */
28 #define ARPHRD_PRONET 4 /* PROnet token ring */
29 #define ARPHRD_CHAOS 5 /* Chaosnet */
30 #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet- huh? */
31 #define ARPHRD_ARCNET 7 /* ARCnet */
32 #define ARPHRD_APPLETLK 8 /* APPLEtalk */
33 /* Dummy types for non ARP hardware */
34 #define ARPHRD_SLIP 256
35 #define ARPHRD_CSLIP 257
36 #define ARPHRD_SLIP6 258
37 #define ARPHRD_CSLIP6 259
38 #define ARPHRD_RSRVD 260 /* Notional KISS type */
39 #define ARPHRD_ADAPT 264
40 #define ARPHRD_PPP 512
41
42 /* ARP protocol opcodes. */
43 #define ARPOP_REQUEST 1 /* ARP request */
44 #define ARPOP_REPLY 2 /* ARP reply */
45 #define ARPOP_RREQUEST 3 /* RARP request */
46 #define ARPOP_RREPLY 4 /* RARP reply */
47
48
49 /* ARP ioctl request. */
50 struct arpreq {
51 struct sockaddr arp_pa; /* protocol address */
52 struct sockaddr arp_ha; /* hardware address */
53 int arp_flags; /* flags */
54 };
55
56 /* ARP Flag values. */
57 #define ATF_COM 0x02 /* completed entry (ha valid) */
58 #define ATF_PERM 0x04 /* permanent entry */
59 #define ATF_PUBL 0x08 /* publish entry */
60 #define ATF_USETRAILERS 0x10 /* has requested trailers */
61
62
63 #endif /* _LINUX_IF_ARP_H */