workbench/network/common/include/net/if_arp.h

   1 /*
   2  * Copyright (C) 1993,1994 AmiTCP/IP Group, <amitcp-group@hut.fi>
   3  *                         Helsinki University of Technology, Finland.
   4  *                         All rights reserved.
   5  * Copyright (C) 2005 Neil Cafferkey
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU Library General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with this file; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  19  * MA 02111-1307, USA.
  20  *
  21  */
  22
  23 #ifndef NET_IF_ARP_H
  24 #define NET_IF_ARP_H
  25
  26 /*
  27  * Address Resolution Protocol.
  28  *
  29  * See RFC 826 for protocol description.  ARP packets are variable
  30  * in size; the arphdr structure defines the fixed-length portion.
  31  * Protocol type values are the same as those for 10 Mb/s Ethernet.
  32  * It is followed by the variable-sized fields ar_sha, arp_spa,
  33  * arp_tha and arp_tpa in that order, according to the lengths
  34  * specified.  Field names used correspond to RFC 826.
  35  */
  36 struct  arphdr {
  37         u_short ar_hrd;         /* format of hardware address */
  38 #define ARPHRD_ETHER    1       /* ethernet hardware address */
  39 #define ARPHRD_ARCNET   7       /* ARCNET hardware address */
  40         u_short ar_pro;         /* format of protocol address */
  41         u_char  ar_hln;         /* length of hardware address */
  42         u_char  ar_pln;         /* length of protocol address */
  43         u_short ar_op;          /* one of: */
  44 #define ARPOP_REQUEST   1       /* request to resolve address */
  45 #define ARPOP_REPLY     2       /* response to previous request */
  46 /*
  47  * The remaining fields are variable in size,
  48  * according to the sizes above.
  49  */
  50 /*      u_char  ar_sha[];       \* sender hardware address */
  51 /*      u_char  ar_spa[];       \* sender protocol address */
  52 /*      u_char  ar_tha[];       \* target hardware address */
  53 /*      u_char  ar_tpa[];       \* target protocol address */
  54 };
  55
  56 #define MAXADDRARP  16          /* Maximum number of octets in hw address */
  57
  58 /*
  59  * ARP ioctl request.
  60  */
  61 struct arpreq {
  62         struct  sockaddr arp_pa;                /* protocol address */
  63         struct  {                               /* hardware address */
  64           u_char sa_len;
  65           u_char sa_family;
  66           char   sa_data[MAXADDRARP];
  67         }  arp_ha;
  68         int     arp_flags;                      /* flags */
  69 };
  70
  71 /*  arp_flags and at_flags field values */
  72 #define ATF_INUSE       0x01    /* entry in use */
  73 #define ATF_COM         0x02    /* completed entry (enaddr valid) */
  74 #define ATF_PERM        0x04    /* permanent entry */
  75 #define ATF_PUBL        0x08    /* publish entry (respond for other host) */
  76 #define ATF_USETRAILERS 0x10    /* has requested trailers */
  77
  78 /*
  79  * An AmiTCP/IP specific ARP table ioctl request
  80  */
  81 struct arptabreq {
  82         struct arpreq  atr_arpreq; /* We want to identify the interface */
  83         long           atr_size;          /* # of elements in art_table */
  84         long           atr_inuse;               /* # of elements in use */
  85         struct arpreq *atr_table;
  86 };
  87 \f
  88 /*
  89  * Copyright (c) 1986 Regents of the University of California.
  90  * All rights reserved.
  91  *
  92  * Redistribution and use in source and binary forms, with or without
  93  * modification, are permitted provided that the following conditions
  94  * are met:
  95  * 1. Redistributions of source code must retain the above copyright
  96  *    notice, this list of conditions and the following disclaimer.
  97  * 2. Redistributions in binary form must reproduce the above copyright
  98  *    notice, this list of conditions and the following disclaimer in the
  99  *    documentation and/or other materials provided with the distribution.
 100  * 3. All advertising materials mentioning features or use of this software
 101  *    must display the following acknowledgement:
 102  *      This product includes software developed by the University of
 103  *      California, Berkeley and its contributors.
 104  * 4. Neither the name of the University nor the names of its contributors
 105  *    may be used to endorse or promote products derived from this software
 106  *    without specific prior written permission.
 107  *
 108  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 109  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 110  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 111  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 112  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 113  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 114  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 115  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 116  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 117  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 118  * SUCH DAMAGE.
 119  *
 120  *      @(#)if_arp.h    7.4 (Berkeley) 6/28/90
 121  */
 122 #endif /* NET_IF_ARP_H */
 123
 124