bsd/netinet/igmp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1988 Stephen Deering.
  32  * Copyright (c) 1992, 1993
  33  *      The Regents of the University of California.  All rights reserved.
  34  *
  35  * This code is derived from software contributed to Berkeley by
  36  * Stephen Deering of Stanford University.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)igmp.h      8.1 (Berkeley) 6/10/93
  67  * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $
  68  */
  69
  70 #ifndef _NETINET_IGMP_H_
  71 #define _NETINET_IGMP_H_
  72 #include <sys/appleapiopts.h>
  73
  74 /*
  75  * Internet Group Management Protocol (IGMP) definitions.
  76  *
  77  * Written by Steve Deering, Stanford, May 1988.
  78  *
  79  * MULTICAST Revision: 3.5.1.2
  80  */
  81
  82 /*
  83  * IGMP packet format.
  84  */
  85 struct igmp {
  86         u_char          igmp_type;      /* version & type of IGMP message  */
  87         u_char          igmp_code;      /* subtype for routing msgs        */
  88         u_short         igmp_cksum;     /* IP-style checksum               */
  89         struct in_addr  igmp_group;     /* group address being reported    */
  90 };                                      /*  (zero for queries)             */
  91
  92 #define IGMP_MINLEN                  8
  93
  94 /*
  95  * Message types, including version number.
  96  */
  97 #define IGMP_MEMBERSHIP_QUERY           0x11    /* membership query         */
  98 #define IGMP_V1_MEMBERSHIP_REPORT       0x12    /* Ver. 1 membership report */
  99 #define IGMP_V2_MEMBERSHIP_REPORT       0x16    /* Ver. 2 membership report */
 100 #define IGMP_V2_LEAVE_GROUP             0x17    /* Leave-group message      */
 101
 102 #define IGMP_DVMRP                      0x13    /* DVMRP routing message    */
 103 #define IGMP_PIM                        0x14    /* PIM routing message      */
 104
 105 #define IGMP_MTRACE_RESP                0x1e  /* traceroute resp.(to sender)*/
 106 #define IGMP_MTRACE                     0x1f  /* mcast traceroute messages  */
 107
 108 #define IGMP_MAX_HOST_REPORT_DELAY   10    /* max delay for response to     */
 109                                            /*  query (in seconds) according */
 110                                            /*  to RFC1112                   */
 111
 112
 113 #define IGMP_TIMER_SCALE     10         /* denotes that the igmp code field */
 114                                         /* specifies time in 10th of seconds*/
 115
 116 /*
 117  * The following four defininitions are for backwards compatibility.
 118  * They should be removed as soon as all applications are updated to
 119  * use the new constant names.
 120  */
 121 #define IGMP_HOST_MEMBERSHIP_QUERY      IGMP_MEMBERSHIP_QUERY
 122 #define IGMP_HOST_MEMBERSHIP_REPORT     IGMP_V1_MEMBERSHIP_REPORT
 123 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
 124 #define IGMP_HOST_LEAVE_MESSAGE         IGMP_V2_LEAVE_GROUP
 125
 126 #endif /* _NETINET_IGMP_H_ */