#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