bsd/netinet/igmp_var.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1988 Stephen Deering.
  27  * Copyright (c) 1992, 1993
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * This code is derived from software contributed to Berkeley by
  31  * Stephen Deering of Stanford University.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      from: @(#)igmp_var.h    8.1 (Berkeley) 7/19/93
  62  */
  63
  64 #ifndef _NETINET_IGMP_VAR_H_
  65 #define _NETINET_IGMP_VAR_H_
  66 #include <sys/appleapiopts.h>
  67
  68 #ifdef __APPLE_API_UNSTABLE
  69
  70 /*
  71  * Internet Group Management Protocol (IGMP),
  72  * implementation-specific definitions.
  73  *
  74  * Written by Steve Deering, Stanford, May 1988.
  75  *
  76  * MULTICAST Revision: 3.5.1.3
  77  */
  78
  79 struct igmpstat {
  80         u_int   igps_rcv_total;         /* total IGMP messages received */
  81         u_int   igps_rcv_tooshort;      /* received with too few bytes */
  82         u_int   igps_rcv_badsum;        /* received with bad checksum */
  83         u_int   igps_rcv_queries;       /* received membership queries */
  84         u_int   igps_rcv_badqueries;    /* received invalid queries */
  85         u_int   igps_rcv_reports;       /* received membership reports */
  86         u_int   igps_rcv_badreports;    /* received invalid reports */
  87         u_int   igps_rcv_ourreports;    /* received reports for our groups */
  88         u_int   igps_snd_reports;       /* sent membership reports */
  89 };
  90
  91 #ifdef KERNEL
  92 #ifdef __APPLE_API_PRIVATE
  93 #define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
  94
  95 /*
  96  * States for IGMPv2's leave processing
  97  */
  98 #define IGMP_OTHERMEMBER                        0
  99 #define IGMP_IREPORTEDLAST                      1
 100
 101 /*
 102  * We must remember what version the subnet's querier is.
 103  * We conveniently use the IGMP message type for the proper
 104  * membership report to keep this state.
 105  */
 106 #define IGMP_V1_ROUTER                          IGMP_V1_MEMBERSHIP_REPORT
 107 #define IGMP_V2_ROUTER                          IGMP_V2_MEMBERSHIP_REPORT
 108
 109 /*
 110  * Revert to new router if we haven't heard from an old router in
 111  * this amount of time.
 112  */
 113 #define IGMP_AGE_THRESHOLD                      540
 114
 115 void    igmp_init __P((void));
 116 void    igmp_input __P((struct mbuf *, int));
 117 int             igmp_joingroup __P((struct in_multi *));
 118 void    igmp_leavegroup __P((struct in_multi *));
 119 void    igmp_fasttimo __P((void));
 120 void    igmp_slowtimo __P((void));
 121
 122 SYSCTL_DECL(_net_inet_igmp);
 123
 124 #endif /* __APPLE_API_PRIVATE */
 125 #endif
 126
 127 /*
 128  * Names for IGMP sysctl objects
 129  */
 130 #define IGMPCTL_STATS           1       /* statistics (read-only) */
 131 #define IGMPCTL_MAXID           2
 132
 133 #define IGMPCTL_NAMES { \
 134         { 0, 0 }, \
 135         { "stats", CTLTYPE_STRUCT }, \
 136 }
 137
 138 #endif /* __APPLE_API_UNSTABLE */
 139 #endif
 140