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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1986, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)if_arp.h 8.1 (Berkeley) 6/10/93
59: */
60:
61: #ifndef _SYS_IF_ARP_H
62: #define _SYS_IF_ARP_H
63:
64: /*
65: * Address Resolution Protocol.
66: *
67: * See RFC 826 for protocol description. ARP packets are variable
68: * in size; the arphdr structure defines the fixed-length portion.
69: * Protocol type values are the same as those for 10 Mb/s Ethernet.
70: * It is followed by the variable-sized fields ar_sha, arp_spa,
71: * arp_tha and arp_tpa in that order, according to the lengths
72: * specified. Field names used correspond to RFC 826.
73: */
74: struct arphdr {
75: u_int16_t ar_hrd; /* format of hardware address */
76: #define ARPHRD_ETHER 1 /* ethernet hardware format */
77: #define ARPHRD_FRELAY 15 /* frame relay hardware format */
78: u_int16_t ar_pro; /* format of protocol address */
79: u_int8_t ar_hln; /* length of hardware address */
80: u_int8_t ar_pln; /* length of protocol address */
81: u_int16_t ar_op; /* one of: */
82: #define ARPOP_REQUEST 1 /* request to resolve address */
83: #define ARPOP_REPLY 2 /* response to previous request */
84: #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */
85: #define ARPOP_REVREPLY 4 /* response giving protocol address */
86: #define ARPOP_INVREQUEST 8 /* request to identify peer */
87: #define ARPOP_INVREPLY 9 /* response identifying peer */
88: /*
89: * The remaining fields are variable in size,
90: * according to the sizes above.
91: */
92: #ifdef COMMENT_ONLY
93: u_int8_t ar_sha[]; /* sender hardware address */
94: u_int8_t ar_spa[]; /* sender protocol address */
95: u_int8_t ar_tha[]; /* target hardware address */
96: u_int8_t ar_tpa[]; /* target protocol address */
97: #endif
98: };
99:
100: /*
101: * ARP ioctl request
102: */
103: struct arpreq {
104: struct sockaddr arp_pa; /* protocol address */
105: struct sockaddr arp_ha; /* hardware address */
106: int arp_flags; /* flags */
107: };
108: /* arp_flags and at_flags field values */
109: #define ATF_INUSE 0x01 /* entry in use */
110: #define ATF_COM 0x02 /* completed entry (enaddr valid) */
111: #define ATF_PERM 0x04 /* permanent entry */
112: #define ATF_PUBL 0x08 /* publish entry (respond for other host) */
113: #define ATF_USETRAILERS 0x10 /* has requested trailers */
114:
115: #endif _SYS_IF_ARP_H
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