reactos/drivers/lib/oskittcp/include/freebsd/src/sys/net/if_arp.h

   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  */
  35
  36 #ifndef _NET_IF_ARP_H_
  37 #define _NET_IF_ARP_H_
  38
  39 #include <sys/socket.h>         /* for struct sockaddr */
  40
  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  */
  51 struct  arphdr {
  52         u_short ar_hrd;         /* 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;         /* format of protocol address */
  56         u_char  ar_hln;         /* length of hardware address */
  57         u_char  ar_pln;         /* length of protocol address */
  58         u_short ar_op;          /* 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  */
  80 struct 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_ */