icmp6.h

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#define ni_code		icmp6_ni_hdr.icmp6_code
#define ni_cksum	icmp6_ni_hdr.icmp6_cksum
#define ni_qtype	icmp6_ni_hdr.icmp6_data16[0]
#define ni_flags	icmp6_ni_hdr.icmp6_data16[1]


#define NI_QTYPE_NOOP		0 /* NOOP  */
#define NI_QTYPE_SUPTYPES	1 /* Supported Qtypes */
#define NI_QTYPE_FQDN		2 /* FQDN */
#define NI_QTYPE_NODEADDR	3 /* Node Addresses. XXX: spec says 2, but it may be a typo... */

#if BYTE_ORDER == BIG_ENDIAN
#define NI_SUPTYPE_FLAG_COMPRESS	0x1
#define NI_FQDN_FLAG_VALIDTTL		0x1
#define NI_NODEADDR_FLAG_LINKLOCAL	0x1
#define NI_NODEADDR_FLAG_SITELOCAL	0x2
#define NI_NODEADDR_FLAG_GLOBAL		0x4
#define NI_NODEADDR_FLAG_ALL		0x8
#define NI_NODEADDR_FLAG_TRUNCATE	0x10
#define NI_NODEADDR_FLAG_ANYCAST	0x20 /* just experimental. not in spec */
#elif BYTE_ORDER == LITTLE_ENDIAN
#define NI_SUPTYPE_FLAG_COMPRESS	0x0100
#define NI_FQDN_FLAG_VALIDTTL		0x0100
#define NI_NODEADDR_FLAG_LINKLOCAL	0x0100
#define NI_NODEADDR_FLAG_SITELOCAL	0x0200
#define NI_NODEADDR_FLAG_GLOBAL		0x0400
#define NI_NODEADDR_FLAG_ALL		0x0800
#define NI_NODEADDR_FLAG_TRUNCATE	0x1000
#define NI_NODEADDR_FLAG_ANYCAST	0x2000 /* just experimental. not in spec */
#endif

struct ni_reply_fqdn {
	u_int32_t ni_fqdn_ttl;	/* TTL */
	u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
	u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
};

/*
 * Router Renumbering. as router-renum-08.txt
 */
#if BYTE_ORDER == BIG_ENDIAN /* net byte order */
struct icmp6_router_renum {	/* router renumbering header */
	struct icmp6_hdr	rr_hdr;
	u_int8_t		rr_segnum;
	u_int8_t		rr_test : 1;
	u_int8_t		rr_reqresult : 1;
	u_int8_t		rr_forceapply : 1;
	u_int8_t		rr_specsite : 1;
	u_int8_t		rr_prevdone : 1;
	u_int8_t		rr_flags_reserved : 3;
	u_int16_t		rr_maxdelay;
	u_int32_t		rr_reserved;
};
#elif BYTE_ORDER == LITTLE_ENDIAN
struct icmp6_router_renum {	/* router renumbering header */
	struct icmp6_hdr	rr_hdr;
	u_int8_t		rr_segnum;
	u_int8_t		rr_flags_reserved : 3;
	u_int8_t		rr_prevdone : 1;
	u_int8_t		rr_specsite : 1;
	u_int8_t		rr_forceapply : 1;
	u_int8_t		rr_reqresult : 1;
	u_int8_t		rr_test : 1;
	u_int16_t		rr_maxdelay;
	u_int32_t		rr_reserved;
};
#endif /* BYTE_ORDER */

#define rr_type			rr_hdr.icmp6_type
#define rr_code			rr_hdr.icmp6_code
#define rr_cksum		rr_hdr.icmp6_cksum
#define rr_seqnum 		rr_hdr.icmp6_data32[0]

struct rr_pco_match {		/* match prefix part */
	u_int8_t	rpm_code;
	u_int8_t	rpm_len;
	u_int8_t	rpm_ordinal;
	u_int8_t	rpm_matchlen;
	u_int8_t	rpm_minlen;
	u_int8_t	rpm_maxlen;
	u_int16_t	rpm_reserved;
	struct in6_addr	rpm_prefix;
};

#define RPM_PCO_ADD		1
#define RPM_PCO_CHANGE		2
#define RPM_PCO_SETGLOBAL	3
#define RPM_PCO_MAX		4

#if BYTE_ORDER == BIG_ENDIAN /* net byte order */
struct rr_pco_use {		/* use prefix part */
	u_int8_t	rpu_uselen;
	u_int8_t	rpu_keeplen;
	u_int8_t	rpu_mask_onlink : 1;
	u_int8_t	rpu_mask_autonomous : 1;
	u_int8_t	rpu_mask_reserved : 6;
	u_int8_t	rpu_onlink : 1;
	u_int8_t	rpu_autonomous : 1;
	u_int8_t	rpu_raflags_reserved : 6;
	u_int32_t	rpu_vltime;
	u_int32_t	rpu_pltime;
	u_int32_t	rpu_decr_vltime : 1;
	u_int32_t	rpu_decr_pltime : 1;
	u_int32_t	rpu_flags_reserved : 6;
	u_int32_t	rpu_reserved : 24;
	struct in6_addr rpu_prefix;
};
#elif BYTE_ORDER == LITTLE_ENDIAN
struct rr_pco_use {		/* use prefix part */
	u_int8_t	rpu_uselen;
	u_int8_t	rpu_keeplen;
	u_int8_t	rpu_mask_reserved : 6;
	u_int8_t	rpu_mask_autonomous : 1;
	u_int8_t	rpu_mask_onlink : 1;
	u_int8_t	rpu_raflags_reserved : 6;
	u_int8_t	rpu_autonomous : 1;
	u_int8_t	rpu_onlink : 1;
	u_int32_t	rpu_vltime;
	u_int32_t	rpu_pltime;
	u_int32_t	rpu_flags_reserved : 6;
	u_int32_t	rpu_decr_pltime : 1;
	u_int32_t	rpu_decr_vltime : 1;
	u_int32_t	rpu_reserved : 24;
	struct in6_addr rpu_prefix;
};
#endif /* BYTE_ORDER */

#if BYTE_ORDER == BIG_ENDIAN /* net byte order */
struct rr_result {		/* router renumbering result message */
	u_int8_t	rrr_reserved;
	u_int8_t	rrr_flags_reserved : 6;
	u_int8_t	rrr_outofbound : 1;
	u_int8_t	rrr_forbidden : 1;
	u_int8_t	rrr_ordinal;
	u_int8_t	rrr_matchedlen;
	u_int32_t	rrr_ifid;
	struct in6_addr rrr_prefix;
};
#elif BYTE_ORDER == LITTLE_ENDIAN
struct rr_result {		/* router renumbering result message */
	u_int8_t	rrr_reserved;
	u_int8_t	rrr_forbidden : 1;
	u_int8_t	rrr_outofbound : 1;
	u_int8_t	rrr_flags_reserved : 6;
	u_int8_t	rrr_ordinal;
	u_int8_t	rrr_matchedlen;
	u_int32_t	rrr_ifid;
	struct in6_addr rrr_prefix;
};
#endif /* BYTE_ORDER */

/*
 * icmp6 filter structures.
 */

struct icmp6_filter {
	u_int32_t icmp6_filter[8];
};

#ifdef _KERNEL
#define	ICMP6_FILTER_SETPASSALL(filterp) \
    {								\
	int i; u_char *p;					\
	p = (u_char *)filterp;					\
	for (i = 0; i < sizeof(struct icmp6_filter); i++)	\
		p[i] = 0xff;					\
    }
#define	ICMP6_FILTER_SETBLOCKALL(filterp) \
	bzero(filterp, sizeof(struct icmp6_filter))
#else /* _KERNEL */
#define	ICMP6_FILTER_SETPASSALL(filterp) \
	memset(filterp, 0xff, sizeof(struct icmp6_filter))
#define	ICMP6_FILTER_SETBLOCKALL(filterp) \
	memset(filterp, 0x00, sizeof(struct icmp6_filter))
#endif /* _KERNEL */

#define	ICMP6_FILTER_SETPASS(type, filterp) \
	(((filterp)->icmp6_filter[(type) >> 5]) |= (1 << ((type) & 31)))
#define	ICMP6_FILTER_SETBLOCK(type, filterp) \
	(((filterp)->icmp6_filter[(type) >> 5]) &= ~(1 << ((type) & 31)))
#define	ICMP6_FILTER_WILLPASS(type, filterp) \
	((((filterp)->icmp6_filter[(type) >> 5]) & (1 << ((type) & 31))) != 0)
#define	ICMP6_FILTER_WILLBLOCK(type, filterp) \
	((((filterp)->icmp6_filter[(type) >> 5]) & (1 << ((type) & 31))) == 0)

/*
 * Variables related to this implementation
 * of the internet control message protocol version 6.
 */
struct icmp6stat {
/* statistics related to icmp6 packets generated */
	u_quad_t icp6s_error;		/* # of calls to icmp6_error */
	u_quad_t icp6s_canterror;	/* no error 'cuz old was icmp */
	u_quad_t icp6s_toofreq;		/* no error 'cuz rate limitation */
	u_quad_t icp6s_outhist[256];
/* statistics related to input message processed */
	u_quad_t icp6s_badcode;		/* icmp6_code out of range */
	u_quad_t icp6s_tooshort;	/* packet < sizeof(struct icmp6_hdr) */
	u_quad_t icp6s_checksum;	/* bad checksum */
	u_quad_t icp6s_badlen;		/* calculated bound mismatch */
	u_quad_t icp6s_reflect;		/* number of responses */
	u_quad_t icp6s_inhist[256];	
	u_quad_t icp6s_nd_toomanyopt;	/* too many ND options */
};

/*
 * Names for ICMP sysctl objects
 */
#define ICMPV6CTL_STATS		1
#define ICMPV6CTL_REDIRACCEPT	2	/* accept/process redirects */
#define ICMPV6CTL_REDIRTIMEOUT	3	/* redirect cache time */
#define ICMPV6CTL_ERRRATELIMIT	5	/* ICMPv6 error rate limitation */
#define ICMPV6CTL_ND6_PRUNE	6
#define ICMPV6CTL_ND6_DELAY	8
#define ICMPV6CTL_ND6_UMAXTRIES	9
#define ICMPV6CTL_ND6_MMAXTRIES		10
#define ICMPV6CTL_ND6_USELOOPBACK	11
#define ICMPV6CTL_ND6_PROXYALL	12
#define ICMPV6CTL_MAXID		13

#define ICMPV6CTL_NAMES { \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ "rediraccept", CTLTYPE_INT }, \
	{ "redirtimeout", CTLTYPE_INT }, \
	{ 0, 0 }, \
	{ "errratelimit", CTLTYPE_INT }, \
	{ "nd6_prune", CTLTYPE_INT }, \
	{ 0, 0 }, \
	{ "nd6_delay", CTLTYPE_INT }, \
	{ "nd6_umaxtries", CTLTYPE_INT }, \
	{ "nd6_mmaxtries", CTLTYPE_INT }, \
	{ "nd6_useloopback", CTLTYPE_INT }, \
	{ "nd6_proxyall", CTLTYPE_INT }, \
}

#define ICMPV6CTL_VARS { \
	0, \
	0, \
	&icmp6_rediraccept,   \
	&icmp6_redirtimeout,  \
	0, \
	0, \
	&icmp6errratelim, \
	&nd6_prune,	\
	0, \
	&nd6_delay,	\
	&nd6_umaxtries, \
	&nd6_mmaxtries,	\
	&nd6_useloopback, \
	&nd6_proxyall, \
}

#define RTF_PROBEMTU	RTF_PROTO1

#ifdef _KERNEL
# ifdef __STDC__
struct	rtentry;
struct	rttimer;
struct	in6_multi;
# endif
void	icmp6_init __P((void));
void	icmp6_paramerror __P((struct mbuf *, int));
void	icmp6_error __P((struct mbuf *, int, int, int));
int	icmp6_input __P((struct mbuf **, int *, int));
void	icmp6_fasttimo __P((void));
void	icmp6_reflect __P((struct mbuf *, size_t));
void	icmp6_prepare __P((struct mbuf *));
void	icmp6_redirect_input __P((struct mbuf *, int));
void	icmp6_redirect_output __P((struct mbuf *, struct rtentry *));
int	icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));

/* XXX: is this the right place for these macros? */
#define icmp6_ifstat_inc(ifp, tag) \
do {								\
	if ((ifp) && (ifp)->if_index <= if_index			\
	 && (ifp)->if_index < icmp6_ifstatmax			\
	 && icmp6_ifstat && icmp6_ifstat[(ifp)->if_index]) {	\
		icmp6_ifstat[(ifp)->if_index]->tag++;		\
	}							\
} while (0)

#define icmp6_ifoutstat_inc(ifp, type, code) \
do { \
		icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 		if (type < ICMP6_INFOMSG_MASK) \
 			icmp6_ifstat_inc(ifp, ifs6_out_error); \
		switch(type) { \
		 case ICMP6_DST_UNREACH: \
			 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
			 if (code == ICMP6_DST_UNREACH_ADMIN) \
				 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
			 break; \
		 case ICMP6_PACKET_TOO_BIG: \
			 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
			 break; \
		 case ICMP6_TIME_EXCEEDED: \
			 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
			 break; \
		 case ICMP6_PARAM_PROB: \
			 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
			 break; \
		 case ICMP6_ECHO_REQUEST: \
			 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
			 break; \
		 case ICMP6_ECHO_REPLY: \
			 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
			 break; \
		 case MLD6_LISTENER_QUERY: \
			 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
			 break; \
		 case MLD6_LISTENER_REPORT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
			 break; \
		 case MLD6_LISTENER_DONE: \
			 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
			 break; \
		 case ND_ROUTER_SOLICIT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
			 break; \
		 case ND_ROUTER_ADVERT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
			 break; \
		 case ND_NEIGHBOR_SOLICIT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
			 break; \
		 case ND_NEIGHBOR_ADVERT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
			 break; \
		 case ND_REDIRECT: \
			 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
			 break; \
		} \
} while (0)

extern int	icmp6_rediraccept;	/* accept/process redirects */
extern int	icmp6_redirtimeout;	/* cache time for redirect routes */
#endif /* _KERNEL */

#endif /* not _NETINET6_ICMPV6_H_ */