sys/netinet/if_inarp.h

   1 /*      $NetBSD: if_inarp.h,v 1.47 2015/05/21 09:26:18 ozaki-r 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 #include <sys/queue.h>          /* for LIST_ENTRY */
  38 #include <netinet/in.h>         /* for struct in_addr */
  39
  40 struct llinfo_arp {
  41         LIST_ENTRY(llinfo_arp) la_list;
  42         struct  rtentry *la_rt;
  43         struct  mbuf *la_hold;          /* last packet until resolved/timeout */
  44         long    la_asked;               /* last time we QUERIED for this addr */
  45 };
  46
  47 struct sockaddr_inarp {
  48         u_int8_t  sin_len;
  49         u_int8_t  sin_family;
  50         u_int16_t sin_port;
  51         struct    in_addr sin_addr;
  52         struct    in_addr sin_srcaddr;
  53         u_int16_t sin_tos;
  54         u_int16_t sin_other;
  55 #define SIN_PROXY 1
  56 };
  57
  58 #ifdef _KERNEL
  59
  60 /* ARP timings from RFC5227 */
  61 #define PROBE_WAIT               1
  62 #define PROBE_NUM                3
  63 #define PROBE_MIN                1
  64 #define PROBE_MAX                2
  65 #define ANNOUNCE_WAIT            2
  66 #define ANNOUNCE_NUM             2
  67 #define ANNOUNCE_INTERVAL        2
  68 #define MAX_CONFLICTS           10
  69 #define RATE_LIMIT_INTERVAL     60
  70 #define DEFEND_INTERVAL         10
  71
  72 #include <sys/malloc.h>
  73 MALLOC_DECLARE(M_IPARP);
  74
  75 extern struct ifqueue arpintrq;
  76 void arp_ifinit(struct ifnet *, struct ifaddr *);
  77 void arp_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
  78 int arpresolve(struct ifnet *, struct rtentry *, struct mbuf *,
  79                     const struct sockaddr *, u_char *);
  80 void arpintr(void);
  81 void arprequest(struct ifnet *, const struct in_addr *, const struct in_addr *,
  82     const u_int8_t *);
  83 void arp_drain(void);
  84 int arpioctl(u_long, void *);
  85 void arpwhohas(struct ifnet *, struct in_addr *);
  86
  87 void revarpinput(struct mbuf *);
  88 int revarpwhoarewe(struct ifnet *, struct in_addr *, struct in_addr *);
  89 #endif
  90
  91 #endif /* !_NETINET_IF_INARP_H_ */