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fd26970f | 1 | /* Definitions for Address Resolution Protocol. |
0ecb606c | 2 | Copyright (C) 1997,1999,2001,2006 Free Software Foundation, Inc. |
fd26970f UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
fd26970f UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
fd26970f | 15 | |
41bdb6e2 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
fd26970f UD |
20 | |
21 | /* Based on the 4.4BSD and Linux version of this file. */ | |
22 | ||
23 | #ifndef _NET_IF_ARP_H | |
24 | ||
25 | #define _NET_IF_ARP_H 1 | |
26 | #include <sys/cdefs.h> | |
27 | ||
28 | #include <sys/types.h> | |
1fb05e3d | 29 | #include <sys/socket.h> |
fd26970f UD |
30 | |
31 | __BEGIN_DECLS | |
32 | ||
9d187dd4 UD |
33 | /* Some internals from deep down in the kernel. */ |
34 | #define MAX_ADDR_LEN 7 | |
35 | ||
36 | ||
fd26970f UD |
37 | /* This structure defines an ethernet arp header. */ |
38 | ||
39 | /* ARP protocol opcodes. */ | |
40 | #define ARPOP_REQUEST 1 /* ARP request. */ | |
41 | #define ARPOP_REPLY 2 /* ARP reply. */ | |
42 | #define ARPOP_RREQUEST 3 /* RARP request. */ | |
43 | #define ARPOP_RREPLY 4 /* RARP reply. */ | |
08c70af0 UD |
44 | #define ARPOP_InREQUEST 8 /* InARP request. */ |
45 | #define ARPOP_InREPLY 9 /* InARP reply. */ | |
46 | #define ARPOP_NAK 10 /* (ATM)ARP NAK. */ | |
fd26970f UD |
47 | |
48 | /* See RFC 826 for protocol description. ARP packets are variable | |
49 | in size; the arphdr structure defines the fixed-length portion. | |
50 | Protocol type values are the same as those for 10 Mb/s Ethernet. | |
51 | It is followed by the variable-sized fields ar_sha, arp_spa, | |
52 | arp_tha and arp_tpa in that order, according to the lengths | |
53 | specified. Field names used correspond to RFC 826. */ | |
54 | ||
55 | struct arphdr | |
56 | { | |
57 | unsigned short int ar_hrd; /* Format of hardware address. */ | |
58 | unsigned short int ar_pro; /* Format of protocol address. */ | |
59 | unsigned char ar_hln; /* Length of hardware address. */ | |
60 | unsigned char ar_pln; /* Length of protocol address. */ | |
61 | unsigned short int ar_op; /* ARP opcode (command). */ | |
62 | #if 0 | |
63 | /* Ethernet looks like this : This bit is variable sized | |
64 | however... */ | |
65 | unsigned char __ar_sha[ETH_ALEN]; /* Sender hardware address. */ | |
66 | unsigned char __ar_sip[4]; /* Sender IP address. */ | |
67 | unsigned char __ar_tha[ETH_ALEN]; /* Target hardware address. */ | |
68 | unsigned char __ar_tip[4]; /* Target IP address. */ | |
69 | #endif | |
70 | }; | |
71 | ||
72 | ||
73 | /* ARP protocol HARDWARE identifiers. */ | |
74 | #define ARPHRD_NETROM 0 /* From KA9Q: NET/ROM pseudo. */ | |
af6f3906 | 75 | #define ARPHRD_ETHER 1 /* Ethernet 10/100Mbps. */ |
fd26970f UD |
76 | #define ARPHRD_EETHER 2 /* Experimental Ethernet. */ |
77 | #define ARPHRD_AX25 3 /* AX.25 Level 2. */ | |
78 | #define ARPHRD_PRONET 4 /* PROnet token ring. */ | |
79 | #define ARPHRD_CHAOS 5 /* Chaosnet. */ | |
80 | #define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB. */ | |
81 | #define ARPHRD_ARCNET 7 /* ARCnet. */ | |
82 | #define ARPHRD_APPLETLK 8 /* APPLEtalk. */ | |
08c70af0 UD |
83 | #define ARPHRD_DLCI 15 /* Frame Relay DLCI. */ |
84 | #define ARPHRD_ATM 19 /* ATM. */ | |
85 | #define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id). */ | |
8d4d88bc UD |
86 | #define ARPHRD_IEEE1394 24 /* IEEE 1394 IPv4 - RFC 2734. */ |
87 | #define ARPHRD_EUI64 27 /* EUI-64. */ | |
88 | #define ARPHRD_INFINIBAND 32 /* InfiniBand. */ | |
fd26970f UD |
89 | |
90 | /* Dummy types for non ARP hardware */ | |
91 | #define ARPHRD_SLIP 256 | |
92 | #define ARPHRD_CSLIP 257 | |
93 | #define ARPHRD_SLIP6 258 | |
94 | #define ARPHRD_CSLIP6 259 | |
95 | #define ARPHRD_RSRVD 260 /* Notional KISS type. */ | |
96 | #define ARPHRD_ADAPT 264 | |
97 | #define ARPHRD_ROSE 270 | |
98 | #define ARPHRD_X25 271 /* CCITT X.25. */ | |
0ecb606c | 99 | #define ARPHRD_HWX25 272 /* Boards with X.25 in firmware. */ |
fd26970f | 100 | #define ARPHRD_PPP 512 |
2e3f5f59 AJ |
101 | #define ARPHRD_CISCO 513 /* Cisco HDLC. */ |
102 | #define ARPHRD_HDLC ARPHRD_CISCO | |
714a562f | 103 | #define ARPHRD_LAPB 516 /* LAPB. */ |
13632cfc | 104 | #define ARPHRD_DDCMP 517 /* Digital's DDCMP. */ |
2e3f5f59 | 105 | #define ARPHRD_RAWHDLC 518 /* Raw HDLC. */ |
fd26970f UD |
106 | |
107 | #define ARPHRD_TUNNEL 768 /* IPIP tunnel. */ | |
108 | #define ARPHRD_TUNNEL6 769 /* IPIP6 tunnel. */ | |
109 | #define ARPHRD_FRAD 770 /* Frame Relay Access Device. */ | |
110 | #define ARPHRD_SKIP 771 /* SKIP vif. */ | |
111 | #define ARPHRD_LOOPBACK 772 /* Loopback device. */ | |
112 | #define ARPHRD_LOCALTLK 773 /* Localtalk device. */ | |
113 | #define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface. */ | |
04be94a8 | 114 | #define ARPHRD_BIF 775 /* AP1000 BIF. */ |
fd26970f | 115 | #define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4. */ |
04be94a8 UD |
116 | #define ARPHRD_IPDDP 777 /* IP-in-DDP tunnel. */ |
117 | #define ARPHRD_IPGRE 778 /* GRE over IP. */ | |
118 | #define ARPHRD_PIMREG 779 /* PIMSM register interface. */ | |
119 | #define ARPHRD_HIPPI 780 /* High Performance Parallel I'face. */ | |
120 | #define ARPHRD_ASH 781 /* (Nexus Electronics) Ash. */ | |
5dc230dc | 121 | #define ARPHRD_ECONET 782 /* Acorn Econet. */ |
4a33c2f5 | 122 | #define ARPHRD_IRDA 783 /* Linux-IrDA. */ |
b4751608 AS |
123 | #define ARPHRD_FCPP 784 /* Point to point fibrechanel. */ |
124 | #define ARPHRD_FCAL 785 /* Fibrechanel arbitrated loop. */ | |
125 | #define ARPHRD_FCPL 786 /* Fibrechanel public loop. */ | |
8d4d88bc | 126 | #define ARPHRD_FCFABRIC 787 /* Fibrechanel fabric. */ |
f560110d | 127 | #define ARPHRD_IEEE802_TR 800 /* Magic type ident for TR. */ |
b3339de1 | 128 | #define ARPHRD_IEEE80211 801 /* IEEE 802.11. */ |
0ecb606c JJ |
129 | #define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header. */ |
130 | #define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header. */ | |
131 | ||
132 | #define ARPHRD_VOID 0xFFFF /* Void type, nothing is known. */ | |
133 | #define ARPHRD_NONE 0xFFFE /* Zero header length. */ | |
134 | ||
fd26970f UD |
135 | |
136 | /* ARP ioctl request. */ | |
137 | struct arpreq | |
138 | { | |
139 | struct sockaddr arp_pa; /* Protocol address. */ | |
140 | struct sockaddr arp_ha; /* Hardware address. */ | |
141 | int arp_flags; /* Flags. */ | |
142 | struct sockaddr arp_netmask; /* Netmask (only for proxy arps). */ | |
143 | char arp_dev[16]; | |
144 | }; | |
145 | ||
146 | struct arpreq_old | |
147 | { | |
148 | struct sockaddr arp_pa; /* Protocol address. */ | |
149 | struct sockaddr arp_ha; /* Hardware address. */ | |
150 | int arp_flags; /* Flags. */ | |
151 | struct sockaddr arp_netmask; /* Netmask (only for proxy arps). */ | |
152 | }; | |
153 | ||
154 | /* ARP Flag values. */ | |
155 | #define ATF_COM 0x02 /* Completed entry (ha valid). */ | |
156 | #define ATF_PERM 0x04 /* Permanent entry. */ | |
157 | #define ATF_PUBL 0x08 /* Publish entry. */ | |
158 | #define ATF_USETRAILERS 0x10 /* Has requested trailers. */ | |
159 | #define ATF_NETMASK 0x20 /* Want to use a netmask (only | |
160 | for proxy entries). */ | |
161 | #define ATF_DONTPUB 0x40 /* Don't answer this addresses. */ | |
162 | #define ATF_MAGIC 0x80 /* Automatically added entry. */ | |
163 | ||
164 | ||
165 | /* Support for the user space arp daemon, arpd. */ | |
166 | #define ARPD_UPDATE 0x01 | |
167 | #define ARPD_LOOKUP 0x02 | |
168 | #define ARPD_FLUSH 0x03 | |
169 | ||
170 | struct arpd_request | |
171 | { | |
172 | unsigned short int req; /* Request type. */ | |
173 | u_int32_t ip; /* IP address of entry. */ | |
174 | unsigned long int dev; /* Device entry is tied to. */ | |
175 | unsigned long int stamp; | |
176 | unsigned long int updated; | |
177 | unsigned char ha[MAX_ADDR_LEN]; /* Hardware address. */ | |
178 | }; | |
179 | ||
180 | __END_DECLS | |
181 | ||
182 | #endif /* net/if_arp.h */ |