bsd/netinet/igmp_var.h

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