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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 * Florian La Roche,
15 * Jonathan Layes <layes@loran.com>
16 * Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License
20 * as published by the Free Software Foundation; either version
21 * 2 of the License, or (at your option) any later version.
22 */
23#ifndef _LINUX_IF_ARP_H
24#define _LINUX_IF_ARP_H
25
26#include <linux/netdevice.h>
27
28/* ARP protocol HARDWARE identifiers. */
29#define ARPHRD_NETROM 0 /* from KA9Q: NET/ROM pseudo */
30#define ARPHRD_ETHER 1 /* Ethernet 10Mbps */
31#define ARPHRD_EETHER 2 /* Experimental Ethernet */
32#define ARPHRD_AX25 3 /* AX.25 Level 2 */
33#define ARPHRD_PRONET 4 /* PROnet token ring */
34#define ARPHRD_CHAOS 5 /* Chaosnet */
35#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB */
36#define ARPHRD_ARCNET 7 /* ARCnet */
37#define ARPHRD_APPLETLK 8 /* APPLEtalk */
38#define ARPHRD_DLCI 15 /* Frame Relay DLCI */
39#define ARPHRD_ATM 19 /* ATM */
40#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id) */
41#define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734 */
42#define ARPHRD_EUI64 27 /* EUI-64 */
43#define ARPHRD_INFINIBAND 32 /* InfiniBand */
44
45/* Dummy types for non ARP hardware */
46#define ARPHRD_SLIP 256
47#define ARPHRD_CSLIP 257
48#define ARPHRD_SLIP6 258
49#define ARPHRD_CSLIP6 259
50#define ARPHRD_RSRVD 260 /* Notional KISS type */
51#define ARPHRD_ADAPT 264
52#define ARPHRD_ROSE 270
53#define ARPHRD_X25 271 /* CCITT X.25 */
54#define ARPHRD_HWX25 272 /* Boards with X.25 in firmware */
55#define ARPHRD_PPP 512
56#define ARPHRD_CISCO 513 /* Cisco HDLC */
57#define ARPHRD_HDLC ARPHRD_CISCO
58#define ARPHRD_LAPB 516 /* LAPB */
59#define ARPHRD_DDCMP 517 /* Digital's DDCMP protocol */
60#define ARPHRD_RAWHDLC 518 /* Raw HDLC */
61
62#define ARPHRD_TUNNEL 768 /* IPIP tunnel */
63#define ARPHRD_TUNNEL6 769 /* IP6IP6 tunnel */
64#define ARPHRD_FRAD 770 /* Frame Relay Access Device */
65#define ARPHRD_SKIP 771 /* SKIP vif */
66#define ARPHRD_LOOPBACK 772 /* Loopback device */
67#define ARPHRD_LOCALTLK 773 /* Localtalk device */
68#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface */
69#define ARPHRD_BIF 775 /* AP1000 BIF */
70#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4 */
71#define ARPHRD_IPDDP 777 /* IP over DDP tunneller */
72#define ARPHRD_IPGRE 778 /* GRE over IP */
73#define ARPHRD_PIMREG 779 /* PIMSM register interface */
74#define ARPHRD_HIPPI 780 /* High Performance Parallel Interface */
75#define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */
76#define ARPHRD_ECONET 782 /* Acorn Econet */
77#define ARPHRD_IRDA 783 /* Linux-IrDA */
78/* ARP works differently on different FC media .. so */
79#define ARPHRD_FCPP 784 /* Point to point fibrechannel */
80#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */
81#define ARPHRD_FCPL 786 /* Fibrechannel public loop */
82#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */
83 /* 787->799 reserved for fibrechannel media types */
84#define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR */
85#define ARPHRD_IEEE80211 801 /* IEEE 802.11 */
86#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
87
88#define ARPHRD_VOID 0xFFFF /* Void type, nothing is known */
89#define ARPHRD_NONE 0xFFFE /* zero header length */
90
91/* ARP protocol opcodes. */
92#define ARPOP_REQUEST 1 /* ARP request */
93#define ARPOP_REPLY 2 /* ARP reply */
94#define ARPOP_RREQUEST 3 /* RARP request */
95#define ARPOP_RREPLY 4 /* RARP reply */
96#define ARPOP_InREQUEST 8 /* InARP request */
97#define ARPOP_InREPLY 9 /* InARP reply */
98#define ARPOP_NAK 10 /* (ATM)ARP NAK */
99
100
101/* ARP ioctl request. */
102struct arpreq {
103 struct sockaddr arp_pa; /* protocol address */
104 struct sockaddr arp_ha; /* hardware address */
105 int arp_flags; /* flags */
106 struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
107 char arp_dev[16];
108};
109
110struct arpreq_old {
111 struct sockaddr arp_pa; /* protocol address */
112 struct sockaddr arp_ha; /* hardware address */
113 int arp_flags; /* flags */
114 struct sockaddr arp_netmask; /* netmask (only for proxy arps) */
115};
116
117/* ARP Flag values. */
118#define ATF_COM 0x02 /* completed entry (ha valid) */
119#define ATF_PERM 0x04 /* permanent entry */
120#define ATF_PUBL 0x08 /* publish entry */
121#define ATF_USETRAILERS 0x10 /* has requested trailers */
122#define ATF_NETMASK 0x20 /* want to use a netmask (only
123 for proxy entries) */
124#define ATF_DONTPUB 0x40 /* don't answer this addresses */
125
126/*
127 * This structure defines an ethernet arp header.
128 */
129
130struct arphdr
131{
132 unsigned short ar_hrd; /* format of hardware address */
133 unsigned short ar_pro; /* format of protocol address */
134 unsigned char ar_hln; /* length of hardware address */
135 unsigned char ar_pln; /* length of protocol address */
136 unsigned short ar_op; /* ARP opcode (command) */
137
138#if 0
139 /*
140 * Ethernet looks like this : This bit is variable sized however...
141 */
142 unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
143 unsigned char ar_sip[4]; /* sender IP address */
144 unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
145 unsigned char ar_tip[4]; /* target IP address */
146#endif
147
148};
149
150#endif /* _LINUX_IF_ARP_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 17:13:10 -0500