bsd/netinet/igmp.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  *      @(#)igmp.h      8.1 (Berkeley) 6/10/93
  62  * $FreeBSD: src/sys/netinet/igmp.h,v 1.10 1999/08/28 00:49:15 peter Exp $
  63  */
  64
  65 #ifndef _NETINET_IGMP_H_
  66 #define _NETINET_IGMP_H_
  67 #include <sys/appleapiopts.h>
  68
  69 /*
  70  * Internet Group Management Protocol (IGMP) definitions.
  71  *
  72  * Written by Steve Deering, Stanford, May 1988.
  73  *
  74  * MULTICAST Revision: 3.5.1.2
  75  */
  76
  77 /*
  78  * IGMP packet format.
  79  */
  80 struct igmp {
  81         u_char          igmp_type;      /* version & type of IGMP message  */
  82         u_char          igmp_code;      /* subtype for routing msgs        */
  83         u_short         igmp_cksum;     /* IP-style checksum               */
  84         struct in_addr  igmp_group;     /* group address being reported    */
  85 };                                      /*  (zero for queries)             */
  86
  87 #define IGMP_MINLEN                  8
  88
  89 /*
  90  * Message types, including version number.
  91  */
  92 #define IGMP_MEMBERSHIP_QUERY           0x11    /* membership query         */
  93 #define IGMP_V1_MEMBERSHIP_REPORT       0x12    /* Ver. 1 membership report */
  94 #define IGMP_V2_MEMBERSHIP_REPORT       0x16    /* Ver. 2 membership report */
  95 #define IGMP_V2_LEAVE_GROUP             0x17    /* Leave-group message      */
  96
  97 #define IGMP_DVMRP                      0x13    /* DVMRP routing message    */
  98 #define IGMP_PIM                        0x14    /* PIM routing message      */
  99
 100 #define IGMP_MTRACE_RESP                0x1e  /* traceroute resp.(to sender)*/
 101 #define IGMP_MTRACE                     0x1f  /* mcast traceroute messages  */
 102
 103 #define IGMP_MAX_HOST_REPORT_DELAY   10    /* max delay for response to     */
 104                                            /*  query (in seconds) according */
 105                                            /*  to RFC1112                   */
 106
 107
 108 #define IGMP_TIMER_SCALE     10         /* denotes that the igmp code field */
 109                                         /* specifies time in 10th of seconds*/
 110
 111 /*
 112  * The following four defininitions are for backwards compatibility.
 113  * They should be removed as soon as all applications are updated to
 114  * use the new constant names.
 115  */
 116 #define IGMP_HOST_MEMBERSHIP_QUERY      IGMP_MEMBERSHIP_QUERY
 117 #define IGMP_HOST_MEMBERSHIP_REPORT     IGMP_V1_MEMBERSHIP_REPORT
 118 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
 119 #define IGMP_HOST_LEAVE_MESSAGE         IGMP_V2_LEAVE_GROUP
 120
 121 #endif /* _NETINET_IGMP_H_ */