📄 icmp6.h

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#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
#elif BYTE_ORDER == LITTLE_ENDIAN
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
#endif

struct rr_result {		/* router renumbering result message */
	u_int16_t	rrr_flags;
	u_int8_t	rrr_ordinal;
	u_int8_t	rrr_matchedlen;
	u_int32_t	rrr_ifid;
	struct	in6_addr rrr_prefix;
} __attribute__((aligned(1), packed));
#if BYTE_ORDER == BIG_ENDIAN
#define ICMP6_RR_RESULT_FLAGS_OOB		0x0002
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN		0x0001
#elif BYTE_ORDER == LITTLE_ENDIAN
#define ICMP6_RR_RESULT_FLAGS_OOB		0x0200
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN		0x0100
#endif

/*
 * icmp6 filter structures.
 */

struct icmp6_filter {
	u_int32_t icmp6_filt[8];
};

#ifdef _KERNEL
#define	ICMP6_FILTER_SETPASSALL(filterp) \do {								\	int i; u_char *p;					\	p = (u_char *)filterp;					\	for (i = 0; i < sizeof(struct icmp6_filter); i++)	\		p[i] = 0xff;					\} while (0)
#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_filt[(type) >> 5]) |= (1 << ((type) & 31)))
#define	ICMP6_FILTER_SETBLOCK(type, filterp) \	(((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
#define	ICMP6_FILTER_WILLPASS(type, filterp) \	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
#define	ICMP6_FILTER_WILLBLOCK(type, filterp) \	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)

/*
 * Variables related to this implementation
 * of the internet control message protocol version 6.
 */
struct icmp6errstat {
	u_quad_t icp6errs_dst_unreach_noroute;
	u_quad_t icp6errs_dst_unreach_admin;
	u_quad_t icp6errs_dst_unreach_beyondscope;
	u_quad_t icp6errs_dst_unreach_addr;
	u_quad_t icp6errs_dst_unreach_noport;
	u_quad_t icp6errs_packet_too_big;
	u_quad_t icp6errs_time_exceed_transit;
	u_quad_t icp6errs_time_exceed_reassembly;
	u_quad_t icp6errs_paramprob_header;
	u_quad_t icp6errs_paramprob_nextheader;
	u_quad_t icp6errs_paramprob_option;
	u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
	u_quad_t icp6errs_unknown;
};

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 */
	/*
	 * number of responses: this member is inherited from netinet code, but
	 * for netinet6 code, it is already available in icp6s_outhist[].
	 */
	u_quad_t icp6s_reflect;
	u_quad_t icp6s_inhist[256];	
	u_quad_t icp6s_nd_toomanyopt;	/* too many ND options */
	struct icmp6errstat icp6s_outerrhist;
#define icp6s_odst_unreach_noroute \	icp6s_outerrhist.icp6errs_dst_unreach_noroute
#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
#define icp6s_odst_unreach_beyondscope \	icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
#define icp6s_otime_exceed_transit \	icp6s_outerrhist.icp6errs_time_exceed_transit
#define icp6s_otime_exceed_reassembly \	icp6s_outerrhist.icp6errs_time_exceed_reassembly
#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
#define icp6s_oparamprob_nextheader \	icp6s_outerrhist.icp6errs_paramprob_nextheader
#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
	u_quad_t icp6s_pmtuchg;		/* path MTU changes */
	u_quad_t icp6s_nd_badopt;	/* bad ND options */
	u_quad_t icp6s_badns;		/* bad neighbor solicitation */
	u_quad_t icp6s_badna;		/* bad neighbor advertisement */
	u_quad_t icp6s_badrs;		/* bad router advertisement */
	u_quad_t icp6s_badra;		/* bad router advertisement */
	u_quad_t icp6s_badredirect;	/* bad redirect message */
};

/*
 * Names for ICMP sysctl objects
 */
#define ICMPV6CTL_STATS		1
#define ICMPV6CTL_REDIRACCEPT	2	/* accept/process redirects */
#define ICMPV6CTL_REDIRTIMEOUT	3	/* redirect cache time */
#if 0	/*obsoleted*/
#define ICMPV6CTL_ERRRATELIMIT	5	/* ICMPv6 error rate limitation */
#endif
#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	obsoleted, do not reuse here */
#define ICMPV6CTL_NODEINFO	13
#define ICMPV6CTL_ERRPPSLIMIT	14	/* ICMPv6 error pps limitation */
#define ICMPV6CTL_ND6_MAXNUDHINT	15
#define ICMPV6CTL_MTUDISC_HIWAT	16
#define ICMPV6CTL_MTUDISC_LOWAT	17
#define ICMPV6CTL_ND6_DEBUG	18
#define ICMPV6CTL_ND6_DRLIST	19
#define ICMPV6CTL_ND6_PRLIST	20
#define ICMPV6CTL_MAXID		21

#define ICMPV6CTL_NAMES { \	{ 0, 0 }, \	{ 0, 0 }, \	{ "rediraccept", CTLTYPE_INT }, \	{ "redirtimeout", CTLTYPE_INT }, \	{ 0, 0 }, \	{ 0, 0 }, \	{ "nd6_prune", CTLTYPE_INT }, \	{ 0, 0 }, \	{ "nd6_delay", CTLTYPE_INT }, \	{ "nd6_umaxtries", CTLTYPE_INT }, \	{ "nd6_mmaxtries", CTLTYPE_INT }, \	{ "nd6_useloopback", CTLTYPE_INT }, \	{ 0, 0 }, \	{ "nodeinfo", CTLTYPE_INT }, \	{ "errppslimit", CTLTYPE_INT }, \	{ "nd6_maxnudhint", CTLTYPE_INT }, \	{ "mtudisc_hiwat", CTLTYPE_INT }, \	{ "mtudisc_lowat", CTLTYPE_INT }, \	{ "nd6_debug", CTLTYPE_INT }, \	{ 0, 0 }, \	{ 0, 0 }, \}

#ifdef __bsdi__
#define ICMPV6CTL_VARS { \	0, \	0, \	&icmp6_rediraccept,   \	&icmp6_redirtimeout,  \	0, \	0, \	&nd6_prune,	\	0, \	&nd6_delay,	\	&nd6_umaxtries, \	&nd6_mmaxtries,	\	&nd6_useloopback, \	0, \	&icmp6_nodeinfo, \	&icmp6errppslim, \	&nd6_maxnudhint, \	0, \	0, \	&nd6_debug, \	0, \	0, \}
#endif

#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 *));
#ifdef __bsdi__
int	icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
void	icmp6_mtuexpire __P((struct rtentry *, struct rttimer *));
#endif /*__bsdi__*/
#if defined(__NetBSD__) || defined(__OpenBSD__)
int	icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
#endif

struct	ip6ctlparam;
void	icmp6_mtudisc_update __P((struct ip6ctlparam *, int));
#if defined(__NetBSD__) || defined(__OpenBSD__)
void	icmp6_mtudisc_callback_register __P((void (*)(struct in6_addr *)));
#endif

/* 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); \		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 MLD_LISTENER_QUERY: \			 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \			 break; \		 case MLD_LISTENER_REPORT: \			 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \			 break; \		 case MLD_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 _NETINET_ICMP6_H_ */
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