sys/netinet/if_inarp.h

   1 /*      $NetBSD: if_inarp.h,v 1.41 2008/10/24 17:07:33 dyoung Exp $     */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)if_ether.h  8.1 (Berkeley) 6/10/93
  32  */
  33
  34 #ifndef _NETINET_IF_INARP_H_
  35 #define _NETINET_IF_INARP_H_
  36
  37 struct llinfo_arp {
  38         LIST_ENTRY(llinfo_arp) la_list;
  39         struct  rtentry *la_rt;
  40         struct  mbuf *la_hold;          /* last packet until resolved/timeout */
  41         long    la_asked;               /* last time we QUERIED for this addr */
  42 };
  43
  44 struct sockaddr_inarp {
  45         u_int8_t  sin_len;
  46         u_int8_t  sin_family;
  47         u_int16_t sin_port;
  48         struct    in_addr sin_addr;
  49         struct    in_addr sin_srcaddr;
  50         u_int16_t sin_tos;
  51         u_int16_t sin_other;
  52 #define SIN_PROXY 1
  53 };
  54
  55 /*
  56  * IP and ethernet specific routing flags
  57  */
  58 #define RTF_USETRAILERS RTF_PROTO1      /* use trailers */
  59 #define RTF_ANNOUNCE    RTF_PROTO2      /* announce new arp entry */
  60
  61 #ifdef _KERNEL
  62 extern struct ifqueue arpintrq;
  63 void arp_ifinit(struct ifnet *, struct ifaddr *);
  64 void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
  65 int arpresolve(struct ifnet *, struct rtentry *, struct mbuf *,
  66                     const struct sockaddr *, u_char *);
  67 void arpintr(void);
  68 void arprequest(struct ifnet *, const struct in_addr *, const struct in_addr *,
  69     const u_int8_t *);
  70 void arp_init(void);
  71 void arp_drain(void);
  72 int arpioctl(u_long, void *);
  73 void arpwhohas(struct ifnet *, struct in_addr *);
  74
  75 void revarpinput(struct mbuf *);
  76 void in_revarpinput(struct mbuf *);
  77 void revarprequest(struct ifnet *);
  78 int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
  79 #endif
  80
  81 #endif /* !_NETINET_IF_INARP_H_ */