bsd/netinet/igmp.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  *      @(#)igmp.h      8.1 (Berkeley) 6/10/93
  65  * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $
  66  */
  67
  68 #ifndef _NETINET_IGMP_H_
  69 #define _NETINET_IGMP_H_
  70 #include <sys/appleapiopts.h>
  71
  72 /*
  73  * Internet Group Management Protocol (IGMP) definitions.
  74  *
  75  * Written by Steve Deering, Stanford, May 1988.
  76  *
  77  * MULTICAST Revision: 3.5.1.2
  78  */
  79
  80 /*
  81  * IGMP packet format.
  82  */
  83 struct igmp {
  84         u_char          igmp_type;      /* version & type of IGMP message  */
  85         u_char          igmp_code;      /* subtype for routing msgs        */
  86         u_short         igmp_cksum;     /* IP-style checksum               */
  87         struct in_addr  igmp_group;     /* group address being reported    */
  88 };                                      /*  (zero for queries)             */
  89
  90 #define IGMP_MINLEN                  8
  91
  92 /*
  93  * Message types, including version number.
  94  */
  95 #define IGMP_MEMBERSHIP_QUERY           0x11    /* membership query         */
  96 #define IGMP_V1_MEMBERSHIP_REPORT       0x12    /* Ver. 1 membership report */
  97 #define IGMP_V2_MEMBERSHIP_REPORT       0x16    /* Ver. 2 membership report */
  98 #define IGMP_V2_LEAVE_GROUP             0x17    /* Leave-group message      */
  99
 100 #define IGMP_DVMRP                      0x13    /* DVMRP routing message    */
 101 #define IGMP_PIM                        0x14    /* PIM routing message      */
 102
 103 #define IGMP_MTRACE_RESP                0x1e  /* traceroute resp.(to sender)*/
 104 #define IGMP_MTRACE                     0x1f  /* mcast traceroute messages  */
 105
 106 #define IGMP_MAX_HOST_REPORT_DELAY   10    /* max delay for response to     */
 107                                            /*  query (in seconds) according */
 108                                            /*  to RFC1112                   */
 109
 110
 111 #define IGMP_TIMER_SCALE     10         /* denotes that the igmp code field */
 112                                         /* specifies time in 10th of seconds*/
 113
 114 /*
 115  * The following four defininitions are for backwards compatibility.
 116  * They should be removed as soon as all applications are updated to
 117  * use the new constant names.
 118  */
 119 #define IGMP_HOST_MEMBERSHIP_QUERY      IGMP_MEMBERSHIP_QUERY
 120 #define IGMP_HOST_MEMBERSHIP_REPORT     IGMP_V1_MEMBERSHIP_REPORT
 121 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
 122 #define IGMP_HOST_LEAVE_MESSAGE         IGMP_V2_LEAVE_GROUP
 123
 124 #endif /* _NETINET_IGMP_H_ */