| /*- |
| * Copyright (c) 1988 Stephen Deering. |
| * Copyright (c) 1992, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Stephen Deering of Stanford University. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)igmp.h 8.1 (Berkeley) 6/10/93 |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_NETINET_IGMP_H_ |
| #define _BSD_NETINET_IGMP_H_ |
| |
| /* |
| * Internet Group Management Protocol (IGMP) definitions. |
| * |
| * Written by Steve Deering, Stanford, May 1988. |
| * |
| * MULTICAST Revision: 3.5.1.2 |
| */ |
| |
| /* Minimum length of any IGMP protocol message. */ |
| #define IGMP_MINLEN 8 |
| |
| /* |
| * IGMPv1/v2 query and host report format. |
| */ |
| struct igmp { |
| u_char igmp_type; /* version & type of IGMP message */ |
| u_char igmp_code; /* subtype for routing msgs */ |
| u_short igmp_cksum; /* IP-style checksum */ |
| struct in_addr igmp_group; /* group address being reported */ |
| }; /* (zero for queries) */ |
| |
| /* |
| * IGMP v3 query format. |
| */ |
| struct igmpv3 { |
| u_char igmp_type; /* version & type of IGMP message */ |
| u_char igmp_code; /* subtype for routing msgs */ |
| u_short igmp_cksum; /* IP-style checksum */ |
| struct in_addr igmp_group; /* group address being reported */ |
| /* (zero for queries) */ |
| u_char igmp_misc; /* reserved/suppress/robustness */ |
| u_char igmp_qqi; /* querier's query interval */ |
| u_short igmp_numsrc; /* number of sources */ |
| /*struct in_addr igmp_sources[1];*/ /* source addresses */ |
| }; |
| #define IGMP_V3_QUERY_MINLEN 12 |
| #define IGMP_EXP(x) (((x) >> 4) & 0x07) |
| #define IGMP_MANT(x) ((x) & 0x0f) |
| #define IGMP_QRESV(x) (((x) >> 4) & 0x0f) |
| #define IGMP_SFLAG(x) (((x) >> 3) & 0x01) |
| #define IGMP_QRV(x) ((x) & 0x07) |
| |
| struct igmp_grouprec { |
| u_char ig_type; /* record type */ |
| u_char ig_datalen; /* length of auxiliary data */ |
| u_short ig_numsrc; /* number of sources */ |
| struct in_addr ig_group; /* group address being reported */ |
| /*struct in_addr ig_sources[1];*/ /* source addresses */ |
| }; |
| #define IGMP_GRPREC_HDRLEN 8 |
| |
| /* |
| * IGMPv3 host membership report header. |
| */ |
| struct igmp_report { |
| u_char ir_type; /* IGMP_v3_HOST_MEMBERSHIP_REPORT */ |
| u_char ir_rsv1; /* must be zero */ |
| u_short ir_cksum; /* checksum */ |
| u_short ir_rsv2; /* must be zero */ |
| u_short ir_numgrps; /* number of group records */ |
| /*struct igmp_grouprec ir_groups[1];*/ /* group records */ |
| }; |
| #define IGMP_V3_REPORT_MINLEN 8 |
| #define IGMP_V3_REPORT_MAXRECS 65535 |
| |
| /* |
| * Message types, including version number. |
| */ |
| #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* membership query */ |
| #define IGMP_v1_HOST_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */ |
| #define IGMP_DVMRP 0x13 /* DVMRP routing message */ |
| #define IGMP_PIM 0x14 /* PIMv1 message (historic) */ |
| #define IGMP_v2_HOST_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */ |
| #define IGMP_HOST_LEAVE_MESSAGE 0x17 /* Leave-group message */ |
| #define IGMP_MTRACE_REPLY 0x1e /* mtrace(8) reply */ |
| #define IGMP_MTRACE_QUERY 0x1f /* mtrace(8) probe */ |
| #define IGMP_v3_HOST_MEMBERSHIP_REPORT 0x22 /* Ver. 3 membership report */ |
| |
| /* |
| * IGMPv3 report modes. |
| */ |
| #define IGMP_DO_NOTHING 0 /* don't send a record */ |
| #define IGMP_MODE_IS_INCLUDE 1 /* MODE_IN */ |
| #define IGMP_MODE_IS_EXCLUDE 2 /* MODE_EX */ |
| #define IGMP_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */ |
| #define IGMP_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */ |
| #define IGMP_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */ |
| #define IGMP_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */ |
| |
| /* |
| * IGMPv3 query types. |
| */ |
| #define IGMP_V3_GENERAL_QUERY 1 |
| #define IGMP_V3_GROUP_QUERY 2 |
| #define IGMP_V3_GROUP_SOURCE_QUERY 3 |
| |
| /* |
| * Maximum report interval for IGMP v1/v2 host membership reports [RFC 1112] |
| */ |
| #define IGMP_V1V2_MAX_RI 10 |
| #define IGMP_MAX_HOST_REPORT_DELAY IGMP_V1V2_MAX_RI |
| |
| /* |
| * IGMP_TIMER_SCALE denotes that the igmp code field specifies |
| * time in tenths of a second. |
| */ |
| #define IGMP_TIMER_SCALE 10 |
| |
| #endif /* _BSD_NETINET_IGMP_H_ */ |
