bsd/netinet/igmp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1988 Stephen Deering.
  24  * Copyright (c) 1992, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Stephen Deering of Stanford University.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)igmp.h      8.1 (Berkeley) 6/10/93
  59  */
  60
  61 #ifndef _NETINET_IGMP_H_
  62 #define _NETINET_IGMP_H_
  63
  64 /*
  65  * Internet Group Management Protocol (IGMP) definitions.
  66  *
  67  * Written by Steve Deering, Stanford, May 1988.
  68  *
  69  * MULTICAST Revision: 3.5.1.2
  70  */
  71
  72 /*
  73  * IGMP packet format.
  74  */
  75 struct igmp {
  76         u_char          igmp_type;      /* version & type of IGMP message  */
  77         u_char          igmp_code;      /* subtype for routing msgs        */
  78         u_short         igmp_cksum;     /* IP-style checksum               */
  79         struct in_addr  igmp_group;     /* group address being reported    */
  80 };                                      /*  (zero for queries)             */
  81
  82 #define IGMP_MINLEN                  8
  83
  84 /*
  85  * Message types, including version number.
  86  */
  87 #define IGMP_MEMBERSHIP_QUERY           0x11    /* membership query         */
  88 #define IGMP_V1_MEMBERSHIP_REPORT       0x12    /* Ver. 1 membership report */
  89 #define IGMP_V2_MEMBERSHIP_REPORT       0x16    /* Ver. 2 membership report */
  90 #define IGMP_V2_LEAVE_GROUP             0x17    /* Leave-group message      */
  91
  92 #define IGMP_DVMRP                      0x13    /* DVMRP routing message    */
  93 #define IGMP_PIM                        0x14    /* PIM routing message      */
  94
  95 #define IGMP_MTRACE_RESP                0x1e  /* traceroute resp.(to sender)*/
  96 #define IGMP_MTRACE                     0x1f  /* mcast traceroute messages  */
  97
  98 #define IGMP_MAX_HOST_REPORT_DELAY   10    /* max delay for response to     */
  99                                            /*  query (in seconds) according */
 100                                            /*  to RFC1112                   */
 101
 102
 103 #define IGMP_TIMER_SCALE     10         /* denotes that the igmp code field */
 104                                         /* specifies time in 10th of seconds*/
 105
 106 /*
 107  * The following four defininitions are for backwards compatibility.
 108  * They should be removed as soon as all applications are updated to
 109  * use the new constant names.
 110  */
 111 #define IGMP_HOST_MEMBERSHIP_QUERY      IGMP_MEMBERSHIP_QUERY
 112 #define IGMP_HOST_MEMBERSHIP_REPORT     IGMP_V1_MEMBERSHIP_REPORT
 113 #define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
 114 #define IGMP_HOST_LEAVE_MESSAGE         IGMP_V2_LEAVE_GROUP
 115
 116 #endif /* _NETINET_IGMP_H_ */