source: rtems/cpukit/libnetworking/net/if_arp.h @ 4e0576c0

4.104.114.84.9
Last change on this file since 4e0576c0 was 4e0576c0, checked in by Jennifer Averett <Jennifer.Averett@…>, on Sep 15, 2003 at 2:28:11 PM

2003-09-15 Jennifer Averett <jennifer@…>

PR 481/networking

  • net/ethernet.h, net/if_arp.h, netinet/if_ether.h: Network structs should be packed
  • Property mode set to 100644
File size: 3.9 KB
Line 
1/*
2 * Copyright (c) 1986, 1993
3 *      The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by the University of
16 *      California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *      @(#)if_arp.h    8.1 (Berkeley) 6/10/93
34 * $Id$
35 */
36
37#ifndef _NET_IF_ARP_H_
38#define _NET_IF_ARP_H_
39
40#include <netinet/in.h>
41/*
42 * Address Resolution Protocol.
43 *
44 * See RFC 826 for protocol description.  ARP packets are variable
45 * in size; the arphdr structure defines the fixed-length portion.
46 * Protocol type values are the same as those for 10 Mb/s Ethernet.
47 * It is followed by the variable-sized fields ar_sha, arp_spa,
48 * arp_tha and arp_tpa in that order, according to the lengths
49 * specified.  Field names used correspond to RFC 826.
50 */
51struct  arphdr {
52        u_short ar_hrd BYTE_PACK;               /* format of hardware address */
53#define ARPHRD_ETHER    1       /* ethernet hardware format */
54#define ARPHRD_FRELAY   15      /* frame relay hardware format */
55        u_short ar_pro BYTE_PACK;               /* format of protocol address */
56        u_char  ar_hln BYTE_PACK;               /* length of hardware address */
57        u_char  ar_pln BYTE_PACK;               /* length of protocol address */
58        u_short ar_op BYTE_PACK;                /* one of: */
59#define ARPOP_REQUEST   1       /* request to resolve address */
60#define ARPOP_REPLY     2       /* response to previous request */
61#define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
62#define ARPOP_REVREPLY  4       /* response giving protocol address */
63#define ARPOP_INVREQUEST 8      /* request to identify peer */
64#define ARPOP_INVREPLY  9       /* response identifying peer */
65/*
66 * The remaining fields are variable in size,
67 * according to the sizes above.
68 */
69#ifdef COMMENT_ONLY
70        u_char  ar_sha[];       /* sender hardware address */
71        u_char  ar_spa[];       /* sender protocol address */
72        u_char  ar_tha[];       /* target hardware address */
73        u_char  ar_tpa[];       /* target protocol address */
74#endif
75};
76
77/*
78 * ARP ioctl request
79 */
80struct arpreq {
81        struct  sockaddr arp_pa;                /* protocol address */
82        struct  sockaddr arp_ha;                /* hardware address */
83        int     arp_flags;                      /* flags */
84};
85/*  arp_flags and at_flags field values */
86#define ATF_INUSE       0x01    /* entry in use */
87#define ATF_COM         0x02    /* completed entry (enaddr valid) */
88#define ATF_PERM        0x04    /* permanent entry */
89#define ATF_PUBL        0x08    /* publish entry (respond for other host) */
90#define ATF_USETRAILERS 0x10    /* has requested trailers */
91
92#endif /* !_NET_IF_ARP_H_ */
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