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Diffstat (limited to 'include/uapi/linux/igmp.h')
| -rw-r--r-- | include/uapi/linux/igmp.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/include/uapi/linux/igmp.h b/include/uapi/linux/igmp.h new file mode 100644 index 000000000..90c28bc46 --- /dev/null +++ b/include/uapi/linux/igmp.h @@ -0,0 +1,130 @@ +/* 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 + +#define IGMP_MRDISC_ADV 0x30 /* From RFC4286 */ + +/* + * 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 */ |