1e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2607ca46eSDavid Howells /* 3607ca46eSDavid Howells * Linux NET3: Internet Group Management Protocol [IGMP] 4607ca46eSDavid Howells * 5607ca46eSDavid Howells * Authors: 6607ca46eSDavid Howells * Alan Cox <alan@lxorguk.ukuu.org.uk> 7607ca46eSDavid Howells * 8607ca46eSDavid Howells * Extended to talk the BSD extended IGMP protocol of mrouted 3.6 9607ca46eSDavid Howells * 10607ca46eSDavid Howells * 11607ca46eSDavid Howells * This program is free software; you can redistribute it and/or 12607ca46eSDavid Howells * modify it under the terms of the GNU General Public License 13607ca46eSDavid Howells * as published by the Free Software Foundation; either version 14607ca46eSDavid Howells * 2 of the License, or (at your option) any later version. 15607ca46eSDavid Howells */ 16607ca46eSDavid Howells 17607ca46eSDavid Howells #ifndef _UAPI_LINUX_IGMP_H 18607ca46eSDavid Howells #define _UAPI_LINUX_IGMP_H 19607ca46eSDavid Howells 20607ca46eSDavid Howells #include <linux/types.h> 21607ca46eSDavid Howells #include <asm/byteorder.h> 22607ca46eSDavid Howells 23607ca46eSDavid Howells /* 24607ca46eSDavid Howells * IGMP protocol structures 25607ca46eSDavid Howells */ 26607ca46eSDavid Howells 27607ca46eSDavid Howells /* 28607ca46eSDavid Howells * Header in on cable format 29607ca46eSDavid Howells */ 30607ca46eSDavid Howells 31607ca46eSDavid Howells struct igmphdr { 32607ca46eSDavid Howells __u8 type; 33607ca46eSDavid Howells __u8 code; /* For newer IGMP */ 34607ca46eSDavid Howells __sum16 csum; 35607ca46eSDavid Howells __be32 group; 36607ca46eSDavid Howells }; 37607ca46eSDavid Howells 38607ca46eSDavid Howells /* V3 group record types [grec_type] */ 39607ca46eSDavid Howells #define IGMPV3_MODE_IS_INCLUDE 1 40607ca46eSDavid Howells #define IGMPV3_MODE_IS_EXCLUDE 2 41607ca46eSDavid Howells #define IGMPV3_CHANGE_TO_INCLUDE 3 42607ca46eSDavid Howells #define IGMPV3_CHANGE_TO_EXCLUDE 4 43607ca46eSDavid Howells #define IGMPV3_ALLOW_NEW_SOURCES 5 44607ca46eSDavid Howells #define IGMPV3_BLOCK_OLD_SOURCES 6 45607ca46eSDavid Howells 46607ca46eSDavid Howells struct igmpv3_grec { 47607ca46eSDavid Howells __u8 grec_type; 48607ca46eSDavid Howells __u8 grec_auxwords; 49607ca46eSDavid Howells __be16 grec_nsrcs; 50607ca46eSDavid Howells __be32 grec_mca; 51*94dfc73eSGustavo A. R. Silva __be32 grec_src[]; 52607ca46eSDavid Howells }; 53607ca46eSDavid Howells 54607ca46eSDavid Howells struct igmpv3_report { 55607ca46eSDavid Howells __u8 type; 56607ca46eSDavid Howells __u8 resv1; 5753631a5fSLance Richardson __sum16 csum; 58607ca46eSDavid Howells __be16 resv2; 59607ca46eSDavid Howells __be16 ngrec; 60*94dfc73eSGustavo A. R. Silva struct igmpv3_grec grec[]; 61607ca46eSDavid Howells }; 62607ca46eSDavid Howells 63607ca46eSDavid Howells struct igmpv3_query { 64607ca46eSDavid Howells __u8 type; 65607ca46eSDavid Howells __u8 code; 6653631a5fSLance Richardson __sum16 csum; 67607ca46eSDavid Howells __be32 group; 68607ca46eSDavid Howells #if defined(__LITTLE_ENDIAN_BITFIELD) 69607ca46eSDavid Howells __u8 qrv:3, 70607ca46eSDavid Howells suppress:1, 71607ca46eSDavid Howells resv:4; 72607ca46eSDavid Howells #elif defined(__BIG_ENDIAN_BITFIELD) 73607ca46eSDavid Howells __u8 resv:4, 74607ca46eSDavid Howells suppress:1, 75607ca46eSDavid Howells qrv:3; 76607ca46eSDavid Howells #else 77607ca46eSDavid Howells #error "Please fix <asm/byteorder.h>" 78607ca46eSDavid Howells #endif 79607ca46eSDavid Howells __u8 qqic; 80607ca46eSDavid Howells __be16 nsrcs; 81*94dfc73eSGustavo A. R. Silva __be32 srcs[]; 82607ca46eSDavid Howells }; 83607ca46eSDavid Howells 84607ca46eSDavid Howells #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */ 85607ca46eSDavid Howells #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */ 86607ca46eSDavid Howells #define IGMP_DVMRP 0x13 /* DVMRP routing */ 87607ca46eSDavid Howells #define IGMP_PIM 0x14 /* PIM routing */ 88607ca46eSDavid Howells #define IGMP_TRACE 0x15 89607ca46eSDavid Howells #define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */ 90607ca46eSDavid Howells #define IGMP_HOST_LEAVE_MESSAGE 0x17 91607ca46eSDavid Howells #define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */ 92607ca46eSDavid Howells 93607ca46eSDavid Howells #define IGMP_MTRACE_RESP 0x1e 94607ca46eSDavid Howells #define IGMP_MTRACE 0x1f 95607ca46eSDavid Howells 964b3087c7SLinus Lüssing #define IGMP_MRDISC_ADV 0x30 /* From RFC4286 */ 97607ca46eSDavid Howells 98607ca46eSDavid Howells /* 99607ca46eSDavid Howells * Use the BSD names for these for compatibility 100607ca46eSDavid Howells */ 101607ca46eSDavid Howells 102607ca46eSDavid Howells #define IGMP_DELAYING_MEMBER 0x01 103607ca46eSDavid Howells #define IGMP_IDLE_MEMBER 0x02 104607ca46eSDavid Howells #define IGMP_LAZY_MEMBER 0x03 105607ca46eSDavid Howells #define IGMP_SLEEPING_MEMBER 0x04 106607ca46eSDavid Howells #define IGMP_AWAKENING_MEMBER 0x05 107607ca46eSDavid Howells 108607ca46eSDavid Howells #define IGMP_MINLEN 8 109607ca46eSDavid Howells 110607ca46eSDavid Howells #define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */ 111607ca46eSDavid Howells /* query (in seconds) */ 112607ca46eSDavid Howells 113607ca46eSDavid Howells #define IGMP_TIMER_SCALE 10 /* denotes that the igmphdr->timer field */ 114607ca46eSDavid Howells /* specifies time in 10th of seconds */ 115607ca46eSDavid Howells 116607ca46eSDavid Howells #define IGMP_AGE_THRESHOLD 400 /* If this host don't hear any IGMP V1 */ 117607ca46eSDavid Howells /* message in this period of time, */ 118607ca46eSDavid Howells /* revert to IGMP v2 router. */ 119607ca46eSDavid Howells 120607ca46eSDavid Howells #define IGMP_ALL_HOSTS htonl(0xE0000001L) 121607ca46eSDavid Howells #define IGMP_ALL_ROUTER htonl(0xE0000002L) 122607ca46eSDavid Howells #define IGMPV3_ALL_MCR htonl(0xE0000016L) 123607ca46eSDavid Howells #define IGMP_LOCAL_GROUP htonl(0xE0000000L) 124607ca46eSDavid Howells #define IGMP_LOCAL_GROUP_MASK htonl(0xFFFFFF00L) 125607ca46eSDavid Howells 126607ca46eSDavid Howells /* 127607ca46eSDavid Howells * struct for keeping the multicast list in 128607ca46eSDavid Howells */ 129607ca46eSDavid Howells 130607ca46eSDavid Howells #endif /* _UAPI_LINUX_IGMP_H */ 131