113 lines
3.8 KiB
C
113 lines
3.8 KiB
C
/*-
|
|
* Copyright (c) 2009 Bruce Simpson.
|
|
*
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _NETINET6_MLD6_H_
|
|
#define _NETINET6_MLD6_H_
|
|
|
|
/*
|
|
* Multicast Listener Discovery (MLD) definitions.
|
|
*/
|
|
|
|
/* Minimum length of any MLD protocol message. */
|
|
#define MLD_MINLEN sizeof(struct icmp6_hdr)
|
|
|
|
/*
|
|
* MLD v2 query format.
|
|
* See <netinet/icmp6.h> for struct mld_hdr
|
|
* (MLDv1 query and host report format).
|
|
*/
|
|
struct mldv2_query {
|
|
struct icmp6_hdr mld_icmp6_hdr; /* ICMPv6 header */
|
|
struct in6_addr mld_addr; /* address being queried */
|
|
uint8_t mld_misc; /* reserved/suppress/robustness */
|
|
uint8_t mld_qqi; /* querier's query interval */
|
|
uint16_t mld_numsrc; /* number of sources */
|
|
/* followed by 1..numsrc source addresses */
|
|
} __packed;
|
|
#define MLD_V2_QUERY_MINLEN sizeof(struct mldv2_query)
|
|
#define MLD_MRC_EXP(x) ((ntohs((x)) >> 12) & 0x0007)
|
|
#define MLD_MRC_MANT(x) (ntohs((x)) & 0x0fff)
|
|
#define MLD_QQIC_EXP(x) (((x) >> 4) & 0x07)
|
|
#define MLD_QQIC_MANT(x) ((x) & 0x0f)
|
|
#define MLD_QRESV(x) (((x) >> 4) & 0x0f)
|
|
#define MLD_SFLAG(x) (((x) >> 3) & 0x01)
|
|
#define MLD_QRV(x) ((x) & 0x07)
|
|
|
|
/*
|
|
* MLDv2 host membership report header.
|
|
* mld_type: MLDV2_LISTENER_REPORT
|
|
*/
|
|
struct mldv2_report {
|
|
struct icmp6_hdr mld_icmp6_hdr;
|
|
/* followed by 1..numgrps records */
|
|
} __packed;
|
|
/* overlaid on struct icmp6_hdr. */
|
|
#define mld_numrecs mld_icmp6_hdr.icmp6_data16[1]
|
|
|
|
struct mldv2_record {
|
|
uint8_t mr_type; /* record type */
|
|
uint8_t mr_datalen; /* length of auxiliary data */
|
|
uint16_t mr_numsrc; /* number of sources */
|
|
struct in6_addr mr_addr; /* address being reported */
|
|
/* followed by 1..numsrc source addresses */
|
|
} __packed;
|
|
#define MLD_V2_REPORT_MAXRECS 65535
|
|
|
|
/*
|
|
* MLDv2 report modes.
|
|
*/
|
|
#define MLD_DO_NOTHING 0 /* don't send a record */
|
|
#define MLD_MODE_IS_INCLUDE 1 /* MODE_IN */
|
|
#define MLD_MODE_IS_EXCLUDE 2 /* MODE_EX */
|
|
#define MLD_CHANGE_TO_INCLUDE_MODE 3 /* TO_IN */
|
|
#define MLD_CHANGE_TO_EXCLUDE_MODE 4 /* TO_EX */
|
|
#define MLD_ALLOW_NEW_SOURCES 5 /* ALLOW_NEW */
|
|
#define MLD_BLOCK_OLD_SOURCES 6 /* BLOCK_OLD */
|
|
|
|
/*
|
|
* MLDv2 query types.
|
|
*/
|
|
#define MLD_V2_GENERAL_QUERY 1
|
|
#define MLD_V2_GROUP_QUERY 2
|
|
#define MLD_V2_GROUP_SOURCE_QUERY 3
|
|
|
|
/*
|
|
* Maximum report interval for MLDv1 host membership reports.
|
|
*/
|
|
#define MLD_V1_MAX_RI 10
|
|
|
|
/*
|
|
* MLD_TIMER_SCALE denotes that the MLD code field specifies
|
|
* time in milliseconds.
|
|
*/
|
|
#define MLD_TIMER_SCALE 1000
|
|
|
|
#endif /* _NETINET6_MLD6_H_ */
|