bsd/netinet/igmp_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1988 Stephen Deering.
  24  * Copyright (c) 1992, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Stephen Deering of Stanford University.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      from: @(#)igmp_var.h    8.1 (Berkeley) 7/19/93
  59  */
  60
  61 #ifndef _NETINET_IGMP_VAR_H_
  62 #define _NETINET_IGMP_VAR_H_
  63
  64 /*
  65  * Internet Group Management Protocol (IGMP),
  66  * implementation-specific definitions.
  67  *
  68  * Written by Steve Deering, Stanford, May 1988.
  69  *
  70  * MULTICAST Revision: 3.5.1.3
  71  */
  72
  73 struct igmpstat {
  74         u_int   igps_rcv_total;         /* total IGMP messages received */
  75         u_int   igps_rcv_tooshort;      /* received with too few bytes */
  76         u_int   igps_rcv_badsum;        /* received with bad checksum */
  77         u_int   igps_rcv_queries;       /* received membership queries */
  78         u_int   igps_rcv_badqueries;    /* received invalid queries */
  79         u_int   igps_rcv_reports;       /* received membership reports */
  80         u_int   igps_rcv_badreports;    /* received invalid reports */
  81         u_int   igps_rcv_ourreports;    /* received reports for our groups */
  82         u_int   igps_snd_reports;       /* sent membership reports */
  83 };
  84
  85 #ifdef KERNEL
  86 #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
  87
  88 /*
  89  * States for IGMPv2's leave processing
  90  */
  91 #define IGMP_OTHERMEMBER                        0
  92 #define IGMP_IREPORTEDLAST                      1
  93
  94 /*
  95  * We must remember what version the subnet's querier is.
  96  * We conveniently use the IGMP message type for the proper
  97  * membership report to keep this state.
  98  */
  99 #define IGMP_V1_ROUTER                          IGMP_V1_MEMBERSHIP_REPORT
 100 #define IGMP_V2_ROUTER                          IGMP_V2_MEMBERSHIP_REPORT
 101
 102 /*
 103  * Revert to new router if we haven't heard from an old router in
 104  * this amount of time.
 105  */
 106 #define IGMP_AGE_THRESHOLD                      540
 107
 108 void    igmp_init __P((void));
 109 void    igmp_input __P((struct mbuf *, int));
 110 void    igmp_joingroup __P((struct in_multi *));
 111 void    igmp_leavegroup __P((struct in_multi *));
 112 void    igmp_fasttimo __P((void));
 113 void    igmp_slowtimo __P((void));
 114
 115 SYSCTL_DECL(_net_inet_igmp);
 116
 117 #endif
 118
 119 /*
 120  * Names for IGMP sysctl objects
 121  */
 122 #define IGMPCTL_STATS           1       /* statistics (read-only) */
 123 #define IGMPCTL_MAXID           2
 124
 125 #define IGMPCTL_NAMES { \
 126         { 0, 0 }, \
 127         { "stats", CTLTYPE_STRUCT }, \
 128 }
 129
 130 #endif
 131
 132