[apple/xnu.git] / bsd / netinet6 / nd6.h

/*	$FreeBSD: src/sys/netinet6/nd6.h,v 1.2.2.3 2001/08/13 01:10:49 simokawa Exp $	*/
/*	$KAME: nd6.h,v 1.55 2001/04/27 15:09:49 itojun Exp $	*/

/*
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _NETINET6_ND6_H_
#define _NETINET6_ND6_H_
#include <sys/appleapiopts.h>

/* see net/route.h, or net/if_inarp.h */
#ifndef RTF_ANNOUNCE
#define RTF_ANNOUNCE	RTF_PROTO2
#endif

#include <sys/queue.h>

struct	llinfo_nd6 {
	struct	llinfo_nd6 *ln_next;
	struct	llinfo_nd6 *ln_prev;
	struct	rtentry *ln_rt;
	struct	mbuf *ln_hold;	/* last packet until resolved/timeout */
	long	ln_asked;	/* number of queries already sent for this addr */
	u_long	ln_expire;	/* lifetime for NDP state transition */
	short	ln_state;	/* reachability state */
	short	ln_router;	/* 2^0: ND6 router bit */
	int	ln_byhint;	/* # of times we made it reachable by UL hint */
};

#define ND6_LLINFO_NOSTATE	-2
/*
 * We don't need the WAITDELETE state any more, but we keep the definition
 * in a comment line instead of removing it. This is necessary to avoid
 * unintentionally reusing the value for another purpose, which might
 * affect backward compatibility with old applications.
 * (20000711 jinmei@kame.net)
 */
/* #define ND6_LLINFO_WAITDELETE	-1 */
#define ND6_LLINFO_INCOMPLETE	0
#define ND6_LLINFO_REACHABLE	1
#define ND6_LLINFO_STALE	2
#define ND6_LLINFO_DELAY	3
#define ND6_LLINFO_PROBE	4

#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)

struct nd_ifinfo {
	u_int32_t linkmtu;		/* LinkMTU */
	u_int32_t maxmtu;		/* Upper bound of LinkMTU */
	u_int32_t basereachable;	/* BaseReachableTime */
	u_int32_t reachable;		/* Reachable Time */
	u_int32_t retrans;		/* Retrans Timer */
	u_int32_t flags;		/* Flags */
	int recalctm;			/* BaseReacable re-calculation timer */
	u_int8_t chlim;			/* CurHopLimit */
	u_int8_t receivedra;
	/* the following 3 members are for privacy extension for addrconf */
	u_int8_t randomseed0[8]; /* upper 64 bits of MD5 digest */
	u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */
	u_int8_t randomid[8];	/* current random ID */
};

#define ND6_IFF_PERFORMNUD	0x1

struct in6_nbrinfo {
	char ifname[IFNAMSIZ];	/* if name, e.g. "en0" */
	struct in6_addr addr;	/* IPv6 address of the neighbor */
	long	asked;		/* number of queries already sent for this addr */
	int	isrouter;	/* if it acts as a router */
	int	state;		/* reachability state */
	int	expire;		/* lifetime for NDP state transition */
};

#define DRLSTSIZ 10
#define PRLSTSIZ 10
struct	in6_drlist {
	char ifname[IFNAMSIZ];
	struct {
		struct	in6_addr rtaddr;
		u_char	flags;
		u_short	rtlifetime;
		u_long	expire;
		u_short if_index;
	} defrouter[DRLSTSIZ];
};

struct	in6_defrouter {
	struct	sockaddr_in6 rtaddr;
	u_char	flags;
	u_short	rtlifetime;
	u_long	expire;
	u_short if_index;
};

struct	in6_prlist {
	char ifname[IFNAMSIZ];
	struct {
		struct	in6_addr prefix;
		struct prf_ra raflags;
		u_char	prefixlen;
		u_char	origin;
		u_long	vltime;
		u_long	pltime;
		u_long	expire;
		u_short if_index;
		u_short advrtrs; /* number of advertisement routers */
		struct	in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
	} prefix[PRLSTSIZ];
};

struct in6_prefix {
	struct	sockaddr_in6 prefix;
	struct prf_ra raflags;
	u_char	prefixlen;
	u_char	origin;
	u_long	vltime;
	u_long	pltime;
	u_long	expire;
	u_int32_t flags;
	int refcnt;
	u_short if_index;
	u_short advrtrs; /* number of advertisement routers */
	/* struct sockaddr_in6 advrtr[] */
};

struct	in6_ondireq {
	char ifname[IFNAMSIZ];
	struct {
		u_int32_t linkmtu;	/* LinkMTU */
		u_int32_t maxmtu;	/* Upper bound of LinkMTU */
		u_int32_t basereachable; /* BaseReachableTime */
		u_int32_t reachable;	/* Reachable Time */
		u_int32_t retrans;	/* Retrans Timer */
		u_int32_t flags;	/* Flags */
		int recalctm;		/* BaseReacable re-calculation timer */
		u_int8_t chlim;		/* CurHopLimit */
		u_int8_t receivedra;
	} ndi;
};

struct	in6_ndireq {
	char ifname[IFNAMSIZ];
	struct nd_ifinfo ndi;
};

struct	in6_ndifreq {
	char ifname[IFNAMSIZ];
	u_long ifindex;
};

/* Prefix status */
#define NDPRF_ONLINK		0x1
#define NDPRF_DETACHED		0x2

/* protocol constants */
#define MAX_RTR_SOLICITATION_DELAY	1	/*1sec*/
#define RTR_SOLICITATION_INTERVAL	4	/*4sec*/
#define MAX_RTR_SOLICITATIONS		3

#define ND6_INFINITE_LIFETIME		0xffffffff

#ifdef KERNEL
#ifdef __APPLE_API_PRIVATE
/* node constants */
#define MAX_REACHABLE_TIME		3600000	/* msec */
#define REACHABLE_TIME			30000	/* msec */
#define RETRANS_TIMER			1000	/* msec */
#define MIN_RANDOM_FACTOR		512	/* 1024 * 0.5 */
#define MAX_RANDOM_FACTOR		1536	/* 1024 * 1.5 */
#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 */
#define ND_COMPUTE_RTIME(x) \
		(((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
		((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /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;
};

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 */
	struct in6_addr ndpr_addr; /* address that is 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 */
	struct prf_ra 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
#define ndpr_raf_onlink		ndpr_flags.onlink
#define ndpr_raf_auto		ndpr_flags.autonomous

/*
 * 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

#define ifpr2ndpr(ifpr)	((struct nd_prefix *)(ifpr))
#define ndpr2ifpr(ndpr)	((struct ifprefix *)(ndpr))

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);

/* 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_gctimer;
extern struct llinfo_nd6 llinfo_nd6;
extern struct nd_ifinfo *nd_ifinfo;
extern struct nd_drhead nd_defrouter;
extern struct nd_prhead nd_prefix;
extern int nd6_debug;

#define nd6log(x)	do { if (nd6_debug) log x; } while (0)

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 */

union nd_opts {
	struct nd_opt_hdr *nd_opt_array[9];	/*max = home agent info*/
	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_advint *adv;
		struct nd_opt_hai *hai;
		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_search		nd_opt_each.search
#define nd_opts_last		nd_opt_each.last
#define nd_opts_done		nd_opt_each.done

/* XXX: need nd6_var.h?? */
/* nd6.c */
void nd6_init __P((void));
void nd6_ifattach __P((struct ifnet *));
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_timer __P((void *));
void nd6_purge __P((struct ifnet *));
struct llinfo_nd6 *nd6_free __P((struct rtentry *));
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_storelladdr __P((struct ifnet *, struct rtentry *, struct mbuf *,
			 struct sockaddr *, u_char *));
int nd6_need_cache __P((struct ifnet *));

/* 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_delreq __P((struct nd_defrouter *, int));
void defrouter_select __P((void));
void defrtrlist_del __P((struct nd_defrouter *));
void prelist_remove __P((struct nd_prefix *));
int prelist_update __P((struct nd_prefix *, struct nd_defrouter *,
			struct mbuf *));
int nd6_prelist_add __P((struct nd_prefix *, 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_prefix *));
int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
void rt6_flush __P((struct in6_addr *, struct ifnet *));
int nd6_setdefaultiface __P((int));
int in6_tmpifadd __P((const struct in6_ifaddr *, int));

#endif /* __APPLE_API_PRIVATE */
#endif /* KERNEL */

#endif /* _NETINET6_ND6_H_ */
Commit	Line	Data
9bccf70c A	1	/* $FreeBSD: src/sys/netinet6/nd6.h,v 1.2.2.3 2001/08/13 01:10:49 simokawa Exp $ */
9bccf70c A	2	/* $KAME: nd6.h,v 1.55 2001/04/27 15:09:49 itojun Exp $ */
1c79356b A	3
	4	/*
	5	* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. Neither the name of the project nor the names of its contributors
	17	* may be used to endorse or promote products derived from this software
	18	* without specific prior written permission.
	19	*
	20	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
	21	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
	24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	* SUCH DAMAGE.
	31	*/
	32
	33	#ifndef _NETINET6_ND6_H_
	34	#define _NETINET6_ND6_H_
9bccf70c	35	#include <sys/appleapiopts.h>
1c79356b A	36
	37	/* see net/route.h, or net/if_inarp.h */
	38	#ifndef RTF_ANNOUNCE
	39	#define RTF_ANNOUNCE RTF_PROTO2
	40	#endif
	41
	42	#include <sys/queue.h>
	43
	44	struct llinfo_nd6 {
	45	struct llinfo_nd6 *ln_next;
	46	struct llinfo_nd6 *ln_prev;
	47	struct rtentry *ln_rt;
	48	struct mbuf ln_hold; / last packet until resolved/timeout */
	49	long ln_asked; /* number of queries already sent for this addr */
	50	u_long ln_expire; /* lifetime for NDP state transition */
	51	short ln_state; /* reachability state */
	52	short ln_router; /* 2^0: ND6 router bit */
9bccf70c	53	int ln_byhint; /* # of times we made it reachable by UL hint */
1c79356b A	54	};
	55
	56	#define ND6_LLINFO_NOSTATE -2
9bccf70c A	57	/*
	58	* We don't need the WAITDELETE state any more, but we keep the definition
	59	* in a comment line instead of removing it. This is necessary to avoid
	60	* unintentionally reusing the value for another purpose, which might
	61	* affect backward compatibility with old applications.
	62	* (20000711 jinmei@kame.net)
	63	*/
	64	/* #define ND6_LLINFO_WAITDELETE -1 */
1c79356b A	65	#define ND6_LLINFO_INCOMPLETE 0
	66	#define ND6_LLINFO_REACHABLE 1
	67	#define ND6_LLINFO_STALE 2
	68	#define ND6_LLINFO_DELAY 3
	69	#define ND6_LLINFO_PROBE 4
	70
	71	#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)
	72
	73	struct nd_ifinfo {
	74	u_int32_t linkmtu; /* LinkMTU */
	75	u_int32_t maxmtu; /* Upper bound of LinkMTU */
	76	u_int32_t basereachable; /* BaseReachableTime */
	77	u_int32_t reachable; /* Reachable Time */
	78	u_int32_t retrans; /* Retrans Timer */
	79	u_int32_t flags; /* Flags */
	80	int recalctm; /* BaseReacable re-calculation timer */
	81	u_int8_t chlim; /* CurHopLimit */
	82	u_int8_t receivedra;
55e303ae	83	/* the following 3 members are for privacy extension for addrconf */
9bccf70c A	84	u_int8_t randomseed0[8]; /* upper 64 bits of MD5 digest */
	85	u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */
	86	u_int8_t randomid[8]; /* current random ID */
1c79356b A	87	};
	88
	89	#define ND6_IFF_PERFORMNUD 0x1
	90
	91	struct in6_nbrinfo {
	92	char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */
	93	struct in6_addr addr; /* IPv6 address of the neighbor */
	94	long asked; /* number of queries already sent for this addr */
	95	int isrouter; /* if it acts as a router */
	96	int state; /* reachability state */
	97	int expire; /* lifetime for NDP state transition */
	98	};
	99
	100	#define DRLSTSIZ 10
	101	#define PRLSTSIZ 10
	102	struct in6_drlist {
	103	char ifname[IFNAMSIZ];
	104	struct {
	105	struct in6_addr rtaddr;
	106	u_char flags;
	107	u_short rtlifetime;
	108	u_long expire;
	109	u_short if_index;
	110	} defrouter[DRLSTSIZ];
	111	};
	112
9bccf70c A	113	struct in6_defrouter {
	114	struct sockaddr_in6 rtaddr;
	115	u_char flags;
	116	u_short rtlifetime;
	117	u_long expire;
	118	u_short if_index;
	119	};
	120
1c79356b A	121	struct in6_prlist {
	122	char ifname[IFNAMSIZ];
	123	struct {
	124	struct in6_addr prefix;
	125	struct prf_ra raflags;
	126	u_char prefixlen;
	127	u_char origin;
	128	u_long vltime;
	129	u_long pltime;
	130	u_long expire;
	131	u_short if_index;
	132	u_short advrtrs; /* number of advertisement routers */
	133	struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */
	134	} prefix[PRLSTSIZ];
	135	};
	136
9bccf70c A	137	struct in6_prefix {
	138	struct sockaddr_in6 prefix;
	139	struct prf_ra raflags;
	140	u_char prefixlen;
	141	u_char origin;
	142	u_long vltime;
	143	u_long pltime;
	144	u_long expire;
	145	u_int32_t flags;
	146	int refcnt;
	147	u_short if_index;
	148	u_short advrtrs; /* number of advertisement routers */
	149	/* struct sockaddr_in6 advrtr[] */
	150	};
	151
	152	struct in6_ondireq {
	153	char ifname[IFNAMSIZ];
	154	struct {
	155	u_int32_t linkmtu; /* LinkMTU */
	156	u_int32_t maxmtu; /* Upper bound of LinkMTU */
	157	u_int32_t basereachable; /* BaseReachableTime */
	158	u_int32_t reachable; /* Reachable Time */
	159	u_int32_t retrans; /* Retrans Timer */
	160	u_int32_t flags; /* Flags */
	161	int recalctm; /* BaseReacable re-calculation timer */
	162	u_int8_t chlim; /* CurHopLimit */
	163	u_int8_t receivedra;
	164	} ndi;
	165	};
	166
1c79356b A	167	struct in6_ndireq {
	168	char ifname[IFNAMSIZ];
	169	struct nd_ifinfo ndi;
	170	};
	171
	172	struct in6_ndifreq {
	173	char ifname[IFNAMSIZ];
	174	u_long ifindex;
	175	};
	176
9bccf70c A	177	/* Prefix status */
	178	#define NDPRF_ONLINK 0x1
	179	#define NDPRF_DETACHED 0x2
1c79356b A	180
	181	/* protocol constants */
	182	#define MAX_RTR_SOLICITATION_DELAY 1 /1sec/
	183	#define RTR_SOLICITATION_INTERVAL 4 /4sec/
	184	#define MAX_RTR_SOLICITATIONS 3
	185
	186	#define ND6_INFINITE_LIFETIME 0xffffffff
	187
9bccf70c A	188	#ifdef KERNEL
9bccf70c A	189	#ifdef __APPLE_API_PRIVATE
1c79356b A	190	/* node constants */
	191	#define MAX_REACHABLE_TIME 3600000 /* msec */
	192	#define REACHABLE_TIME 30000 /* msec */
	193	#define RETRANS_TIMER 1000 /* msec */
	194	#define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */
	195	#define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */
9bccf70c A	196	#define DEF_TEMP_VALID_LIFETIME 604800 /* 1 week */
	197	#define DEF_TEMP_PREFERRED_LIFETIME 86400 /* 1 day */
	198	#define TEMPADDR_REGEN_ADVANCE 5 /* sec */
	199	#define MAX_TEMP_DESYNC_FACTOR 600 /* 10 min */
1c79356b A	200	#define ND_COMPUTE_RTIME(x) \
	201	(((MIN_RANDOM_FACTOR * (x >> 10)) + (random() & \
	202	((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000)
1c79356b A	203
	204	TAILQ_HEAD(nd_drhead, nd_defrouter);
	205	struct nd_defrouter {
	206	TAILQ_ENTRY(nd_defrouter) dr_entry;
	207	struct in6_addr rtaddr;
55e303ae	208	u_char flags; /* flags on RA message */
1c79356b A	209	u_short rtlifetime;
	210	u_long expire;
	211	u_long advint; /* Mobile IPv6 addition (milliseconds) */
	212	u_long advint_expire; /* Mobile IPv6 addition */
	213	int advints_lost; /* Mobile IPv6 addition */
	214	struct ifnet *ifp;
	215	};
	216
	217	struct nd_prefix {
	218	struct ifnet *ndpr_ifp;
	219	LIST_ENTRY(nd_prefix) ndpr_entry;
	220	struct sockaddr_in6 ndpr_prefix; /* prefix */
	221	struct in6_addr ndpr_mask; /* netmask derived from the prefix */
	222	struct in6_addr ndpr_addr; /* address that is derived from the prefix */
	223	u_int32_t ndpr_vltime; /* advertised valid lifetime */
	224	u_int32_t ndpr_pltime; /* advertised preferred lifetime */
	225	time_t ndpr_expire; /* expiration time of the prefix */
	226	time_t ndpr_preferred; /* preferred time of the prefix */
	227	struct prf_ra ndpr_flags;
9bccf70c	228	u_int32_t ndpr_stateflags; /* actual state flags */
1c79356b A	229	/* list of routers that advertise the prefix: */
	230	LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs;
	231	u_char ndpr_plen;
9bccf70c	232	int ndpr_refcnt; /* reference couter from addresses */
1c79356b A	233	};
	234
	235	#define ndpr_next ndpr_entry.le_next
	236
	237	#define ndpr_raf ndpr_flags
	238	#define ndpr_raf_onlink ndpr_flags.onlink
	239	#define ndpr_raf_auto ndpr_flags.autonomous
	240
1c79356b A	241	/*
	242	* We keep expired prefix for certain amount of time, for validation purposes.
	243	* 1800s = MaxRtrAdvInterval
	244	*/
	245	#define NDPR_KEEP_EXPIRED (1800 * 2)
	246
	247	/*
	248	* Message format for use in obtaining information about prefixes
	249	* from inet6 sysctl function
	250	*/
	251	struct inet6_ndpr_msghdr {
	252	u_short inpm_msglen; /* to skip over non-understood messages */
55e303ae	253	u_char inpm_version; /* future binary compatibility */
1c79356b A	254	u_char inpm_type; /* message type */
	255	struct in6_addr inpm_prefix;
	256	u_long prm_vltim;
	257	u_long prm_pltime;
	258	u_long prm_expire;
	259	u_long prm_preferred;
	260	struct in6_prflags prm_flags;
	261	u_short prm_index; /* index for associated ifp */
	262	u_char prm_plen; /* length of prefix in bits */
	263	};
	264
	265	#define prm_raf_onlink prm_flags.prf_ra.onlink
	266	#define prm_raf_auto prm_flags.prf_ra.autonomous
	267
	268	#define prm_statef_onlink prm_flags.prf_state.onlink
	269
	270	#define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid
	271	#define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd
	272
	273	#define ifpr2ndpr(ifpr) ((struct nd_prefix *)(ifpr))
	274	#define ndpr2ifpr(ndpr) ((struct ifprefix *)(ndpr))
	275
	276	struct nd_pfxrouter {
	277	LIST_ENTRY(nd_pfxrouter) pfr_entry;
	278	#define pfr_next pfr_entry.le_next
	279	struct nd_defrouter *router;
	280	};
	281
	282	LIST_HEAD(nd_prhead, nd_prefix);
	283
	284	/* nd6.c */
	285	extern int nd6_prune;
	286	extern int nd6_delay;
	287	extern int nd6_umaxtries;
	288	extern int nd6_mmaxtries;
	289	extern int nd6_useloopback;
9bccf70c A	290	extern int nd6_maxnudhint;
9bccf70c A	291	extern int nd6_gctimer;
1c79356b A	292	extern struct llinfo_nd6 llinfo_nd6;
	293	extern struct nd_ifinfo *nd_ifinfo;
	294	extern struct nd_drhead nd_defrouter;
	295	extern struct nd_prhead nd_prefix;
9bccf70c A	296	extern int nd6_debug;
	297
	298	#define nd6log(x) do { if (nd6_debug) log x; } while (0)
	299
	300	extern struct callout nd6_timer_ch;
1c79356b A	301
1c79356b A	302	/* nd6_rtr.c */
1c79356b	303	extern int nd6_defifindex;
9bccf70c A	304	extern int ip6_desync_factor; /* seconds */
	305	extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */
	306	extern u_int32_t ip6_temp_valid_lifetime; /* seconds */
	307	extern int ip6_temp_regen_advance; /* seconds */
1c79356b A	308
	309	union nd_opts {
	310	struct nd_opt_hdr nd_opt_array[9]; /max = home agent info*/
	311	struct {
	312	struct nd_opt_hdr *zero;
	313	struct nd_opt_hdr *src_lladdr;
	314	struct nd_opt_hdr *tgt_lladdr;
55e303ae	315	struct nd_opt_prefix_info pi_beg; / multiple opts, start */
1c79356b A	316	struct nd_opt_rd_hdr *rh;
	317	struct nd_opt_mtu *mtu;
	318	struct nd_opt_hdr *six;
	319	struct nd_opt_advint *adv;
	320	struct nd_opt_hai *hai;
	321	struct nd_opt_hdr search; / multiple opts */
	322	struct nd_opt_hdr last; / multiple opts */
	323	int done;
	324	struct nd_opt_prefix_info pi_end;/ multiple opts, end */
	325	} nd_opt_each;
	326	};
	327	#define nd_opts_src_lladdr nd_opt_each.src_lladdr
	328	#define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr
	329	#define nd_opts_pi nd_opt_each.pi_beg
	330	#define nd_opts_pi_end nd_opt_each.pi_end
	331	#define nd_opts_rh nd_opt_each.rh
	332	#define nd_opts_mtu nd_opt_each.mtu
	333	#define nd_opts_adv nd_opt_each.adv
	334	#define nd_opts_hai nd_opt_each.hai
	335	#define nd_opts_search nd_opt_each.search
	336	#define nd_opts_last nd_opt_each.last
	337	#define nd_opts_done nd_opt_each.done
	338
	339	/* XXX: need nd6_var.h?? */
	340	/* nd6.c */
	341	void nd6_init __P((void));
	342	void nd6_ifattach __P((struct ifnet *));
9bccf70c	343	int nd6_is_addr_neighbor __P((struct sockaddr_in6 , struct ifnet ));
1c79356b A	344	void nd6_option_init __P((void , int, union nd_opts ));
	345	struct nd_opt_hdr nd6_option __P((union nd_opts ));
	346	int nd6_options __P((union nd_opts *));
	347	struct rtentry nd6_lookup __P((struct in6_addr , int, struct ifnet *));
	348	void nd6_setmtu __P((struct ifnet *));
	349	void nd6_timer __P((void *));
	350	void nd6_purge __P((struct ifnet *));
9bccf70c A	351	struct llinfo_nd6 nd6_free __P((struct rtentry ));
9bccf70c A	352	void nd6_nud_hint __P((struct rtentry , struct in6_addr , int));
1c79356b A	353	int nd6_resolve __P((struct ifnet , struct rtentry ,
1c79356b A	354	struct mbuf , struct sockaddr , u_char *));
1c79356b	355	void nd6_rtrequest __P((int, struct rtentry , struct sockaddr ));
1c79356b A	356	int nd6_ioctl __P((u_long, caddr_t, struct ifnet *));
	357	struct rtentry nd6_cache_lladdr __P((struct ifnet , struct in6_addr *,
	358	char *, int, int, int));
9bccf70c A	359	int nd6_output __P((struct ifnet , struct ifnet , struct mbuf *,
9bccf70c A	360	struct sockaddr_in6 , struct rtentry ));
1c79356b A	361	int nd6_storelladdr __P((struct ifnet , struct rtentry , struct mbuf *,
1c79356b A	362	struct sockaddr , u_char ));
9bccf70c	363	int nd6_need_cache __P((struct ifnet *));
1c79356b A	364
	365	/* nd6_nbr.c */
	366	void nd6_na_input __P((struct mbuf *, int, int));
9bccf70c A	367	void nd6_na_output __P((struct ifnet , const struct in6_addr ,
9bccf70c A	368	const struct in6_addr , u_long, int, struct sockaddr ));
1c79356b	369	void nd6_ns_input __P((struct mbuf *, int, int));
9bccf70c A	370	void nd6_ns_output __P((struct ifnet , const struct in6_addr ,
9bccf70c A	371	const struct in6_addr , struct llinfo_nd6 , int));
1c79356b A	372	caddr_t nd6_ifptomac __P((struct ifnet *));
1c79356b A	373	void nd6_dad_start __P((struct ifaddr , int ));
9bccf70c	374	void nd6_dad_stop __P((struct ifaddr *));
1c79356b A	375	void nd6_dad_duplicated __P((struct ifaddr *));
	376
	377	/* nd6_rtr.c */
	378	void nd6_rs_input __P((struct mbuf *, int, int));
	379	void nd6_ra_input __P((struct mbuf *, int, int));
	380	void prelist_del __P((struct nd_prefix *));
	381	void defrouter_addreq __P((struct nd_defrouter *));
	382	void defrouter_delreq __P((struct nd_defrouter *, int));
	383	void defrouter_select __P((void));
	384	void defrtrlist_del __P((struct nd_defrouter *));
	385	void prelist_remove __P((struct nd_prefix *));
	386	int prelist_update __P((struct nd_prefix , struct nd_defrouter ,
9bccf70c A	387	struct mbuf *));
	388	int nd6_prelist_add __P((struct nd_prefix , struct nd_defrouter ,
	389	struct nd_prefix **));
	390	int nd6_prefix_onlink __P((struct nd_prefix *));
	391	int nd6_prefix_offlink __P((struct nd_prefix *));
1c79356b	392	void pfxlist_onlink_check __P((void));
1c79356b A	393	struct nd_defrouter defrouter_lookup __P((struct in6_addr ,
1c79356b A	394	struct ifnet *));
9bccf70c	395	struct nd_prefix nd6_prefix_lookup __P((struct nd_prefix ));
1c79356b A	396	int in6_init_prefix_ltimes __P((struct nd_prefix *ndpr));
	397	void rt6_flush __P((struct in6_addr , struct ifnet ));
	398	int nd6_setdefaultiface __P((int));
9bccf70c	399	int in6_tmpifadd __P((const struct in6_ifaddr *, int));
1c79356b	400
9bccf70c	401	#endif /* __APPLE_API_PRIVATE */
1c79356b A	402	#endif /* KERNEL */
	403
	404	#endif /* _NETINET6_ND6_H_ */