nd6.h

vxworks 6.x 的全部头文件

#define RETRANS_TIMER			1000	/* msec */

#if 0
/* Removed as they aren't being used after the change to ND_COMPUTE_RTIME
 * sar March 27 2005 */
#define MIN_RANDOM_FACTOR		512	/* 1024 * 0.5 */
#define MAX_RANDOM_FACTOR		1536	/* 1024 * 1.5 */
#endif

#define DEF_TEMP_VALID_LIFETIME		604800	/* 1 week */
#define DEF_TEMP_PREFERRED_LIFETIME	86400	/* 1 day */
#define TEMPADDR_REGEN_ADVANCE		5	/* sec */
#define MAX_TEMP_DESYNC_FACTOR		600	/* 10 min */

/* This piece of code was simplified to avoid boundary conditions
 * when performing mutliplies and divides with large numbers
 *
 * The original code was:
 * #define ND_COMPUTE_RTIME(x) \
 *              (((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
 *		 ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
 * Any remainder will be ignored in this and so we could end up with values
 * less than expected in the first half of the expression.  For example if
 * x = 60000 we would have 512 * (60000>>10) = 512 * 58 = 29696 which is
 * less than x/2.
 *
 * The next code was:
 * #define ND_COMPUTE_RTIME(x) \
 *		(((MIN_RANDOM_FACTOR * ((x + 1023) >> 10)) + (random() & \
 *		((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
 * This corrected the problem on the low side but could lead to other
 * rounding type errors.  As we don't many any real use of scale of the
 * min and max random factor we can simplify this expression by removing
 * the 1024 scale factor.
 *
 */
#define ND_COMPUTE_RTIME(x) ((((x + 1) / 2) + (random() % (x - 1))) / 1000)

TAILQ_HEAD(nd_drhead, nd_defrouter);
struct	nd_defrouter {
	TAILQ_ENTRY(nd_defrouter) dr_entry;
	struct	in6_addr rtaddr;
	u_char	flags;		/* flags on RA message */
	u_short	rtlifetime;
	u_long	expire;
	u_long	advint;		/* Mobile IPv6 addition (milliseconds) */
	u_long	advint_expire;	/* Mobile IPv6 addition */
	int	advints_lost;	/* Mobile IPv6 addition */
	struct  ifnet *ifp;
	int	installed;	/* is installed into kernel routing table */
};

struct nd_prefixctl {
	struct ifnet *ndpr_ifp;

	/* prefix */
	struct sockaddr_in6 ndpr_prefix;
	u_char	ndpr_plen;

	u_int32_t ndpr_vltime;	/* advertised valid lifetime */
	u_int32_t ndpr_pltime;	/* advertised preferred lifetime */

	u_char ndpr_flags;
};

struct nd_prefix {
	struct ifnet *ndpr_ifp;
	LIST_ENTRY(nd_prefix) ndpr_entry;
	struct sockaddr_in6 ndpr_prefix;	/* prefix */
	struct in6_addr ndpr_mask; /* netmask derived from the prefix */

	u_int32_t ndpr_vltime;	/* advertised valid lifetime */
	u_int32_t ndpr_pltime;	/* advertised preferred lifetime */

	time_t ndpr_expire;	/* expiration time of the prefix */
	time_t ndpr_preferred;	/* preferred time of the prefix */
	time_t ndpr_lastupdate; /* reception time of last advertisement */

	u_char ndpr_flags;
	u_int32_t ndpr_stateflags; /* actual state flags */
	/* list of routers that advertise the prefix: */
	LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
	u_char	ndpr_plen;
	int	ndpr_refcnt;	/* reference couter from addresses */
};

#define ndpr_next		ndpr_entry.le_next

#define ndpr_raf		ndpr_flags

/*
 * We keep expired prefix for certain amount of time, for validation purposes.
 * 1800s = MaxRtrAdvInterval
 */
#define NDPR_KEEP_EXPIRED	(1800 * 2)

/*
 * Message format for use in obtaining information about prefixes
 * from inet6 sysctl function
 */
struct inet6_ndpr_msghdr {
	u_short	inpm_msglen;	/* to skip over non-understood messages */
	u_char	inpm_version;	/* future binary compatibility */
	u_char	inpm_type;	/* message type */
	struct in6_addr inpm_prefix;
	u_long	prm_vltim;
	u_long	prm_pltime;
	u_long	prm_expire;
	u_long	prm_preferred;
	struct in6_prflags prm_flags;
	u_short	prm_index;	/* index for associated ifp */
	u_char	prm_plen;	/* length of prefix in bits */
};

#define prm_raf_onlink		prm_flags.prf_ra.onlink
#define prm_raf_auto		prm_flags.prf_ra.autonomous

#define prm_statef_onlink	prm_flags.prf_state.onlink

#define prm_rrf_decrvalid	prm_flags.prf_rr.decrvalid
#define prm_rrf_decrprefd	prm_flags.prf_rr.decrprefd


struct nd_pfxrouter {
	LIST_ENTRY(nd_pfxrouter) pfr_entry;
#define pfr_next pfr_entry.le_next
	struct nd_defrouter *router;
};

LIST_HEAD(nd_prhead, nd_prefix);

#ifndef VIRTUAL_STACK
/* nd6.c */
extern int _nd6_prune;
extern int _nd6_delay;
extern int _nd6_umaxtries;
extern int _nd6_mmaxtries;
extern int _nd6_useloopback;
extern int _nd6_maxnudhint;
extern int _nd6_maxqueuelen;
extern int nd6_gctimer;
extern int nd6_recalc_reachtm_interval;
extern struct llinfo_nd6 _llinfo_nd6;
extern struct nd_drhead _nd_defrouter; /* was nd6_defrouter */
extern struct nd_prhead _nd_prefix;  /* was nd6_prefix */
extern int _nd6_debug;
#endif

#if 1 /* accordion -> moved from nd6.c */
#define ND6_SLOWTIMER_INTERVAL (60 * 60) /* 1 hour */
#define ND6_RECALC_REACHTM_INTERVAL (60 * 120) /* 2 hours */
#endif

#define nd6log(x)	do { if (_nd6_debug) log x; } while (0)

#ifndef VIRTUAL_STACK
extern struct callout nd6_timer_ch;

/* nd6_rtr.c */
extern int nd6_defifindex;

extern int ip6_desync_factor;	/* seconds */
extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */
extern u_int32_t ip6_temp_valid_lifetime; /* seconds */
extern int ip6_temp_regen_advance; /* seconds */
#endif /* VIRTUAL_STACK */

union nd_opts {
	struct nd_opt_hdr *nd_opt_array[13];	/* max = target address list */
	struct {
		struct nd_opt_hdr *zero;
		struct nd_opt_hdr *src_lladdr;
		struct nd_opt_hdr *tgt_lladdr;
		struct nd_opt_prefix_info *pi_beg; /* multiple opts, start */
		struct nd_opt_rd_hdr *rh;
		struct nd_opt_mtu *mtu;
		struct nd_opt_hdr *six;
		struct nd_opt_advinterval *adv;
		struct nd_opt_homeagent_info *hai;
		struct nd_opt_hdr *src_addrlist;
		struct nd_opt_hdr *tgt_addrlist;
		struct nd_opt_hdr *search;	/* multiple opts */
		struct nd_opt_hdr *last;	/* multiple opts */
		int done;
		struct nd_opt_prefix_info *pi_end;/* multiple opts, end */
	} nd_opt_each;
};
#define nd_opts_src_lladdr	nd_opt_each.src_lladdr
#define nd_opts_tgt_lladdr	nd_opt_each.tgt_lladdr
#define nd_opts_pi		nd_opt_each.pi_beg
#define nd_opts_pi_end		nd_opt_each.pi_end
#define nd_opts_rh		nd_opt_each.rh
#define nd_opts_mtu		nd_opt_each.mtu
#define nd_opts_adv		nd_opt_each.adv
#define nd_opts_hai		nd_opt_each.hai
#define nd_opts_src_addrlist	nd_opt_each.src_addrlist
#define nd_opts_tgt_addrlist	nd_opt_each.tgt_addrlist
#define nd_opts_search		nd_opt_each.search
#define nd_opts_last		nd_opt_each.last
#define nd_opts_done		nd_opt_each.done

TAILQ_HEAD(dadq_head, dadq);
struct dadq {
	TAILQ_ENTRY(dadq) dad_list;
	struct ifaddr *dad_ifa;
	int dad_count;		/* max NS to send */
	int dad_ns_tcount;	/* # of trials to send NS */
	int dad_ns_ocount;	/* NS sent so far */
	int dad_ns_icount;
	int dad_na_icount;
	struct callout dad_timer_ch;
};

/* XXX: need nd6_var.h?? */
/* nd6.c */
void nd6_init __P((void));
struct nd_ifinfo *nd6_ifattach __P((struct ifnet *));
void nd6_ifdetach __P((struct nd_ifinfo *));
int nd6_is_addr_neighbor __P((struct sockaddr_in6 *, struct ifnet *));
void nd6_option_init __P((void *, int, union nd_opts *));
struct nd_opt_hdr *nd6_option __P((union nd_opts *));
int nd6_options __P((union nd_opts *));
struct	rtentry *nd6_lookup __P((struct in6_addr *, int, struct ifnet *));
void nd6_setmtu __P((struct ifnet *));
void nd6_llinfo_settimer __P((struct llinfo_nd6 *, long));
void nd6_timer __P((void *));
void nd6_purge __P((struct ifnet *));
void nd6_nud_hint __P((struct rtentry *, struct in6_addr *, int));
int nd6_resolve __P((struct ifnet *, struct rtentry *,
		     struct mbuf *, struct sockaddr *, u_char *));
void nd6_rtrequest __P((int, struct rtentry *, struct sockaddr *));
int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
struct rtentry *nd6_cache_lladdr __P((struct ifnet *, struct in6_addr *,
	char *, int, int, int));
int nd6_output __P((struct ifnet *, struct ifnet *, struct mbuf *,
		    struct sockaddr_in6 *, struct rtentry *));
int nd6_need_cache __P((struct ifnet *));
int nd6_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
	struct sockaddr *, u_char *));
void nd6_drain __P((void));
int nd6_need_cache __P((struct ifnet *));
int ip6EtherResolvRtn __P((struct ifnet *, struct rtentry *, struct mbuf *,
                           struct sockaddr *, char *,FUNCPTR));

/* NOTE: m2Ipv6IfLib.c requires nd6_free() */
struct llinfo_nd6 *nd6_free __P((struct rtentry *, int));                           
/* nd6_nbr.c */
void nd6_na_input __P((struct mbuf *, int, int));
void nd6_na_output __P((struct ifnet *, const struct in6_addr *,
	const struct in6_addr *, u_long, int, struct sockaddr *));
void nd6_ns_input __P((struct mbuf *, int, int));
void nd6_ns_output __P((struct ifnet *, const struct in6_addr *,
	const struct in6_addr *, struct llinfo_nd6 *, int));
caddr_t nd6_ifptomac __P((struct ifnet *));
void nd6_dad_start __P((struct ifaddr *, int));
void nd6_dad_stop __P((struct ifaddr *));
void nd6_dad_duplicated __P((struct ifaddr *));

/* nd6_rtr.c */
void nd6_rs_input __P((struct mbuf *, int, int));
void nd6_ra_input __P((struct mbuf *, int, int));
void prelist_del __P((struct nd_prefix *));
void defrouter_addreq __P((struct nd_defrouter *));
void defrouter_reset __P((void));
void defrouter_select __P((void));
void defrtrlist_del __P((struct nd_defrouter *));
void prelist_remove __P((struct nd_prefix *));
int nd6_prelist_add __P((struct nd_prefixctl *, struct nd_defrouter *,
	struct nd_prefix **));
int nd6_prefix_onlink __P((struct nd_prefix *));
int nd6_prefix_offlink __P((struct nd_prefix *));
void pfxlist_onlink_check __P((void));
struct nd_defrouter *defrouter_lookup __P((struct in6_addr *, struct ifnet *));
struct nd_prefix *nd6_prefix_lookup __P((struct nd_prefixctl *));
void rt6_flush __P((struct in6_addr *, struct ifnet *));
int nd6_setdefaultiface __P((int));
int in6_tmpifadd __P((const struct in6_ifaddr *, int, int));

#endif /* _WRS_KERNEL */

#ifdef __cplusplus
}
#endif
#endif /* INET6 */    
#endif /* _NETINET6_ND6_H_ */