bsd/net/if_arp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1986, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)if_arp.h    8.1 (Berkeley) 6/10/93
  63  * $FreeBSD: src/sys/net/if_arp.h,v 1.14.2.1 2000/07/11 20:46:55 archie Exp $
  64  */
  65
  66 #ifndef _NET_IF_ARP_H_
  67 #define _NET_IF_ARP_H_
  68 #include <sys/appleapiopts.h>
  69 #include <netinet/in.h>
  70
  71 /*
  72  * Address Resolution Protocol.
  73  *
  74  * See RFC 826 for protocol description.  ARP packets are variable
  75  * in size; the arphdr structure defines the fixed-length portion.
  76  * Protocol type values are the same as those for 10 Mb/s Ethernet.
  77  * It is followed by the variable-sized fields ar_sha, arp_spa,
  78  * arp_tha and arp_tpa in that order, according to the lengths
  79  * specified.  Field names used correspond to RFC 826.
  80  */
  81 struct  arphdr {
  82         u_short ar_hrd;         /* format of hardware address */
  83 #define ARPHRD_ETHER    1       /* ethernet hardware format */
  84 #define ARPHRD_IEEE802  6       /* token-ring hardware format */
  85 #define ARPHRD_FRELAY   15      /* frame relay hardware format */
  86 #define ARPHRD_IEEE1394 24      /* IEEE1394 hardware address */
  87 #define ARPHRD_IEEE1394_EUI64 27 /* IEEE1394 EUI-64 */
  88         u_short ar_pro;         /* format of protocol address */
  89         u_char  ar_hln;         /* length of hardware address */
  90         u_char  ar_pln;         /* length of protocol address */
  91         u_short ar_op;          /* one of: */
  92 #define ARPOP_REQUEST   1       /* request to resolve address */
  93 #define ARPOP_REPLY     2       /* response to previous request */
  94 #define ARPOP_REVREQUEST 3      /* request protocol address given hardware */
  95 #define ARPOP_REVREPLY  4       /* response giving protocol address */
  96 #define ARPOP_INVREQUEST 8      /* request to identify peer */
  97 #define ARPOP_INVREPLY  9       /* response identifying peer */
  98 /*
  99  * The remaining fields are variable in size,
 100  * according to the sizes above.
 101  */
 102 #ifdef COMMENT_ONLY
 103         u_char  ar_sha[];       /* sender hardware address */
 104         u_char  ar_spa[];       /* sender protocol address */
 105         u_char  ar_tha[];       /* target hardware address */
 106         u_char  ar_tpa[];       /* target protocol address */
 107 #endif
 108 };
 109
 110 /*
 111  * ARP ioctl request
 112  */
 113 struct arpreq {
 114         struct  sockaddr arp_pa;                /* protocol address */
 115         struct  sockaddr arp_ha;                /* hardware address */
 116         int     arp_flags;                      /* flags */
 117 };
 118 /*  arp_flags and at_flags field values */
 119 #define ATF_INUSE       0x01    /* entry in use */
 120 #define ATF_COM         0x02    /* completed entry (enaddr valid) */
 121 #define ATF_PERM        0x04    /* permanent entry */
 122 #define ATF_PUBL        0x08    /* publish entry (respond for other host) */
 123 #define ATF_USETRAILERS 0x10    /* has requested trailers */
 124
 125 #endif /* !_NET_IF_ARP_H_ */