inet/netinet/igmp.h

   1 /* Copyright (C) 1997-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _NETINET_IGMP_H
  19 #define _NETINET_IGMP_H 1
  20
  21 #include <sys/cdefs.h>
  22 #include <sys/types.h>
  23
  24 #ifdef __USE_MISC
  25
  26 #include <netinet/in.h>
  27
  28 __BEGIN_DECLS
  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  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)igmp.h      8.1 (Berkeley) 6/10/93
  63  *      $FreeBSD$
  64  */
  65
  66 struct igmp {
  67   uint8_t igmp_type;             /* IGMP type */
  68   uint8_t igmp_code;             /* routing code */
  69   uint16_t igmp_cksum;           /* checksum */
  70   struct in_addr igmp_group;     /* group address */
  71 };
  72
  73 #define IGMP_MINLEN                     8
  74
  75 /*
  76  * Message types, including version number.
  77  */
  78 #define IGMP_MEMBERSHIP_QUERY           0x11    /* membership query         */
  79 #define IGMP_V1_MEMBERSHIP_REPORT       0x12    /* Ver. 1 membership report */
  80 #define IGMP_V2_MEMBERSHIP_REPORT       0x16    /* Ver. 2 membership report */
  81 #define IGMP_V2_LEAVE_GROUP             0x17    /* Leave-group message      */
  82
  83 #define IGMP_DVMRP                      0x13    /* DVMRP routing message    */
  84 #define IGMP_PIM                        0x14    /* PIM routing message      */
  85 #define IGMP_TRACE                      0x15
  86
  87 #define IGMP_MTRACE_RESP                0x1e    /* traceroute resp.(to sender)*/
  88 #define IGMP_MTRACE                     0x1f    /* mcast traceroute messages  */
  89
  90 #define IGMP_MAX_HOST_REPORT_DELAY      10      /* max delay for response to     */
  91                                                 /*  query (in seconds) according */
  92                                                 /*  to RFC1112                   */
  93 #define IGMP_TIMER_SCALE                10      /* denotes that the igmp code field */
  94                                                 /* specifies time in 10th of seconds*/
  95
  96 /*
  97  * States for the IGMP v2 state table.
  98  */
  99 #define IGMP_DELAYING_MEMBER    1
 100 #define IGMP_IDLE_MEMBER        2
 101 #define IGMP_LAZY_MEMBER        3
 102 #define IGMP_SLEEPING_MEMBER    4
 103 #define IGMP_AWAKENING_MEMBER   5
 104
 105 /*
 106  * States for IGMP router version cache.
 107  */
 108 #define IGMP_v1_ROUTER          1
 109 #define IGMP_v2_ROUTER          2
 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 __END_DECLS
 122
 123 #endif
 124
 125 #endif  /* netinet/igmp.h */