usr.sbin/mrouted/rsrr_var.h

   1 /*      $NetBSD: rsrr_var.h,v 1.2 2002/10/01 03:41:13 itojun Exp $      */
   2
   3 /*
   4  * Copyright (c) 1998-2001.
   5  * The University of Southern California/Information Sciences Institute.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the project nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /* RSRR things that are only needed by mrouted. */
  34
  35 /* Cache of Route Query messages, distinguished by source,
  36  * destination, and client addresses.  Cache is flushed by RSRR client
  37  * -- it sends notification when an unwanted Route Reply is received.
  38  * Since this only happens during route changes, it is more likely
  39  * that the cache will be flushed when the kernel table entry is
  40  * deleted.  */
  41 struct rsrr_cache {
  42     struct rsrr_rq route_query;         /* Cached Route Query */
  43     struct sockaddr_un client_addr;     /* Client address */
  44     int client_length;                  /* Length of client */
  45     struct rsrr_cache *next;            /* next cache item */
  46 };
  47