/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
|
/*
|
* Linux NET3: Internet Group Management Protocol [IGMP]
|
*
|
* Authors:
|
* Alan Cox <alan@lxorguk.ukuu.org.uk>
|
*
|
* Extended to talk the BSD extended IGMP protocol of mrouted 3.6
|
*
|
*
|
* This program is free software; you can redistribute it and/or
|
* modify it under the terms of the GNU General Public License
|
* as published by the Free Software Foundation; either version
|
* 2 of the License, or (at your option) any later version.
|
*/
|
|
#ifndef _UAPI_LINUX_IGMP_H
|
#define _UAPI_LINUX_IGMP_H
|
|
#include <linux/types.h>
|
#include <asm/byteorder.h>
|
|
/*
|
* IGMP protocol structures
|
*/
|
|
/*
|
* Header in on cable format
|
*/
|
|
struct igmphdr {
|
__u8 type;
|
__u8 code; /* For newer IGMP */
|
__sum16 csum;
|
__be32 group;
|
};
|
|
/* V3 group record types [grec_type] */
|
#define IGMPV3_MODE_IS_INCLUDE 1
|
#define IGMPV3_MODE_IS_EXCLUDE 2
|
#define IGMPV3_CHANGE_TO_INCLUDE 3
|
#define IGMPV3_CHANGE_TO_EXCLUDE 4
|
#define IGMPV3_ALLOW_NEW_SOURCES 5
|
#define IGMPV3_BLOCK_OLD_SOURCES 6
|
|
struct igmpv3_grec {
|
__u8 grec_type;
|
__u8 grec_auxwords;
|
__be16 grec_nsrcs;
|
__be32 grec_mca;
|
__be32 grec_src[0];
|
};
|
|
struct igmpv3_report {
|
__u8 type;
|
__u8 resv1;
|
__sum16 csum;
|
__be16 resv2;
|
__be16 ngrec;
|
struct igmpv3_grec grec[0];
|
};
|
|
struct igmpv3_query {
|
__u8 type;
|
__u8 code;
|
__sum16 csum;
|
__be32 group;
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
__u8 qrv:3,
|
suppress:1,
|
resv:4;
|
#elif defined(__BIG_ENDIAN_BITFIELD)
|
__u8 resv:4,
|
suppress:1,
|
qrv:3;
|
#else
|
#error "Please fix <asm/byteorder.h>"
|
#endif
|
__u8 qqic;
|
__be16 nsrcs;
|
__be32 srcs[0];
|
};
|
|
#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
|
#define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
|
#define IGMP_DVMRP 0x13 /* DVMRP routing */
|
#define IGMP_PIM 0x14 /* PIM routing */
|
#define IGMP_TRACE 0x15
|
#define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */
|
#define IGMP_HOST_LEAVE_MESSAGE 0x17
|
#define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */
|
|
#define IGMP_MTRACE_RESP 0x1e
|
#define IGMP_MTRACE 0x1f
|
|
|
/*
|
* Use the BSD names for these for compatibility
|
*/
|
|
#define IGMP_DELAYING_MEMBER 0x01
|
#define IGMP_IDLE_MEMBER 0x02
|
#define IGMP_LAZY_MEMBER 0x03
|
#define IGMP_SLEEPING_MEMBER 0x04
|
#define IGMP_AWAKENING_MEMBER 0x05
|
|
#define IGMP_MINLEN 8
|
|
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
|
/* query (in seconds) */
|
|
#define IGMP_TIMER_SCALE 10 /* denotes that the igmphdr->timer field */
|
/* specifies time in 10th of seconds */
|
|
#define IGMP_AGE_THRESHOLD 400 /* If this host don't hear any IGMP V1 */
|
/* message in this period of time, */
|
/* revert to IGMP v2 router. */
|
|
#define IGMP_ALL_HOSTS htonl(0xE0000001L)
|
#define IGMP_ALL_ROUTER htonl(0xE0000002L)
|
#define IGMPV3_ALL_MCR htonl(0xE0000016L)
|
#define IGMP_LOCAL_GROUP htonl(0xE0000000L)
|
#define IGMP_LOCAL_GROUP_MASK htonl(0xFFFFFF00L)
|
|
/*
|
* struct for keeping the multicast list in
|
*/
|
|
#endif /* _UAPI_LINUX_IGMP_H */
|
