mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 08:44:21 +08:00
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
#ifndef LINUX_MLD_H
|
|
#define LINUX_MLD_H
|
|
|
|
#include <linux/in6.h>
|
|
#include <linux/icmpv6.h>
|
|
|
|
/* MLDv1 Query/Report/Done */
|
|
struct mld_msg {
|
|
struct icmp6hdr mld_hdr;
|
|
struct in6_addr mld_mca;
|
|
};
|
|
|
|
#define mld_type mld_hdr.icmp6_type
|
|
#define mld_code mld_hdr.icmp6_code
|
|
#define mld_cksum mld_hdr.icmp6_cksum
|
|
#define mld_maxdelay mld_hdr.icmp6_maxdelay
|
|
#define mld_reserved mld_hdr.icmp6_dataun.un_data16[1]
|
|
|
|
/* Multicast Listener Discovery version 2 headers */
|
|
/* MLDv2 Report */
|
|
struct mld2_grec {
|
|
__u8 grec_type;
|
|
__u8 grec_auxwords;
|
|
__be16 grec_nsrcs;
|
|
struct in6_addr grec_mca;
|
|
struct in6_addr grec_src[0];
|
|
};
|
|
|
|
struct mld2_report {
|
|
struct icmp6hdr mld2r_hdr;
|
|
struct mld2_grec mld2r_grec[0];
|
|
};
|
|
|
|
#define mld2r_type mld2r_hdr.icmp6_type
|
|
#define mld2r_resv1 mld2r_hdr.icmp6_code
|
|
#define mld2r_cksum mld2r_hdr.icmp6_cksum
|
|
#define mld2r_resv2 mld2r_hdr.icmp6_dataun.un_data16[0]
|
|
#define mld2r_ngrec mld2r_hdr.icmp6_dataun.un_data16[1]
|
|
|
|
/* MLDv2 Query */
|
|
struct mld2_query {
|
|
struct icmp6hdr mld2q_hdr;
|
|
struct in6_addr mld2q_mca;
|
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
__u8 mld2q_qrv:3,
|
|
mld2q_suppress:1,
|
|
mld2q_resv2:4;
|
|
#elif defined(__BIG_ENDIAN_BITFIELD)
|
|
__u8 mld2q_resv2:4,
|
|
mld2q_suppress:1,
|
|
mld2q_qrv:3;
|
|
#else
|
|
#error "Please fix <asm/byteorder.h>"
|
|
#endif
|
|
__u8 mld2q_qqic;
|
|
__be16 mld2q_nsrcs;
|
|
struct in6_addr mld2q_srcs[0];
|
|
};
|
|
|
|
#define mld2q_type mld2q_hdr.icmp6_type
|
|
#define mld2q_code mld2q_hdr.icmp6_code
|
|
#define mld2q_cksum mld2q_hdr.icmp6_cksum
|
|
#define mld2q_mrc mld2q_hdr.icmp6_maxdelay
|
|
#define mld2q_resv1 mld2q_hdr.icmp6_dataun.un_data16[1]
|
|
|
|
/* Max Response Code */
|
|
#define MLDV2_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value))
|
|
#define MLDV2_EXP(thresh, nbmant, nbexp, value) \
|
|
((value) < (thresh) ? (value) : \
|
|
((MLDV2_MASK(value, nbmant) | (1<<(nbmant))) << \
|
|
(MLDV2_MASK((value) >> (nbmant), nbexp) + (nbexp))))
|
|
|
|
#define MLDV2_MRC(value) MLDV2_EXP(0x8000, 12, 3, value)
|
|
|
|
#endif
|