+/*
+ * Copyright (c) 2009 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
/* $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 $ */
#include <sys/queue.h>
+#ifdef KERNEL_PRIVATE
+#include <kern/locks.h>
+
struct llinfo_nd6 {
+ /*
+ * The following are protected by rnh_lock
+ */
struct llinfo_nd6 *ln_next;
struct llinfo_nd6 *ln_prev;
struct rtentry *ln_rt;
+ /*
+ * The following are protected by rt_lock
+ */
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 */
+ u_int32_t 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 */
+ u_int32_t ln_flags; /* flags; see below */
};
+/* Values for ln_flags */
+#define ND6_LNF_TIMER_SKIP 0x1 /* modified by nd6_timer() */
+#define ND6_LNF_IN_USE 0x2 /* currently in llinfo_nd6 list */
+#endif /* KERNEL_PRIVATE */
+
+#define ND6_LLINFO_PURGE -3
#define ND6_LLINFO_NOSTATE -2
/*
* We don't need the WAITDELETE state any more, but we keep the definition
#define ND6_LLINFO_DELAY 3
#define ND6_LLINFO_PROBE 4
+#ifdef KERNEL_PRIVATE
#define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE)
+#endif /* KERNEL_PRIVATE */
+
+#if !defined(KERNEL_PRIVATE)
+struct nd_ifinfo {
+#else
+/* For binary compatibility, this structure must not change */
+struct nd_ifinfo_compat {
+#endif /* !KERNEL_PRIVATE */
+ 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 */
+};
+#if defined(KERNEL_PRIVATE)
struct nd_ifinfo {
u_int32_t linkmtu; /* LinkMTU */
u_int32_t maxmtu; /* Upper bound of LinkMTU */
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 */
+ /* keep track of routers and prefixes on this link */
+ int32_t nprefixes;
+ int32_t ndefrouters;
};
+#endif /* KERNEL_PRIVATE */
#define ND6_IFF_PERFORMNUD 0x1
int expire; /* lifetime for NDP state transition */
};
+#if defined(KERNEL_PRIVATE)
+struct in6_nbrinfo_32 {
+ char ifname[IFNAMSIZ];
+ struct in6_addr addr;
+ u_int32_t asked;
+ int isrouter;
+ int state;
+ int expire;
+};
+
+struct in6_nbrinfo_64 {
+ char ifname[IFNAMSIZ];
+ struct in6_addr addr;
+ long asked;
+ int isrouter __attribute__((aligned(8)));
+ int state;
+ int expire;
+} __attribute__((aligned(8)));
+#endif /* KERNEL_PRIVATE */
+
#define DRLSTSIZ 10
#define PRLSTSIZ 10
+
struct in6_drlist {
char ifname[IFNAMSIZ];
struct {
} defrouter[DRLSTSIZ];
};
+#if defined(KERNEL_PRIVATE)
+struct in6_drlist_32 {
+ char ifname[IFNAMSIZ];
+ struct {
+ struct in6_addr rtaddr;
+ u_char flags;
+ u_short rtlifetime;
+ u_int32_t expire;
+ u_short if_index;
+ } defrouter[DRLSTSIZ];
+};
+
+struct in6_drlist_64 {
+ char ifname[IFNAMSIZ];
+ struct {
+ struct in6_addr rtaddr;
+ u_char flags;
+ u_short rtlifetime;
+ u_long expire __attribute__((aligned(8)));
+ u_short if_index __attribute__((aligned(8)));
+ } defrouter[DRLSTSIZ] __attribute__((aligned(8)));
+};
+#endif /* KERNEL_PRIVATE */
+
struct in6_defrouter {
struct sockaddr_in6 rtaddr;
u_char flags;
u_short if_index;
};
+#if defined(KERNEL_PRIVATE)
+struct in6_defrouter_32 {
+ struct sockaddr_in6 rtaddr;
+ u_char flags;
+ u_short rtlifetime;
+ u_int32_t expire;
+ u_short if_index;
+};
+
+struct in6_defrouter_64 {
+ struct sockaddr_in6 rtaddr;
+ u_char flags;
+ u_short rtlifetime;
+ u_long expire __attribute__((aligned(8)));
+ u_short if_index __attribute__((aligned(8)));
+} __attribute__((aligned(8)));
+#endif /* KERNEL_PRIVATE */
+
struct in6_prlist {
char ifname[IFNAMSIZ];
struct {
} prefix[PRLSTSIZ];
};
+#if defined(KERNEL_PRIVATE)
+struct in6_prlist_32 {
+ char ifname[IFNAMSIZ];
+ struct {
+ struct in6_addr prefix;
+ struct prf_ra raflags;
+ u_char prefixlen;
+ u_char origin;
+ u_int32_t vltime;
+ u_int32_t pltime;
+ u_int32_t expire;
+ u_short if_index;
+ u_short advrtrs;
+ struct in6_addr advrtr[DRLSTSIZ];
+ } prefix[PRLSTSIZ];
+};
+
+struct in6_prlist_64 {
+ char ifname[IFNAMSIZ];
+ struct {
+ struct in6_addr prefix;
+ struct prf_ra raflags;
+ u_char prefixlen;
+ u_char origin;
+ u_long vltime __attribute__((aligned(8)));
+ u_long pltime __attribute__((aligned(8)));
+ u_long expire __attribute__((aligned(8)));
+ u_short if_index;
+ u_short advrtrs;
+ u_int32_t pad;
+ struct in6_addr advrtr[DRLSTSIZ];
+ } prefix[PRLSTSIZ];
+};
+#endif /* KERNEL_PRIVATE */
+
struct in6_prefix {
struct sockaddr_in6 prefix;
struct prf_ra raflags;
/* struct sockaddr_in6 advrtr[] */
};
+#if defined(KERNEL_PRIVATE)
+struct in6_prefix_32 {
+ struct sockaddr_in6 prefix;
+ struct prf_ra raflags;
+ u_char prefixlen;
+ u_char origin;
+ u_int32_t vltime;
+ u_int32_t pltime;
+ u_int32_t expire;
+ u_int32_t flags;
+ int refcnt;
+ u_short if_index;
+ u_short advrtrs;
+ /* struct sockaddr_in6 advrtr[] */
+};
+
+struct in6_prefix_64 {
+ struct sockaddr_in6 prefix;
+ struct prf_ra raflags;
+ u_char prefixlen;
+ u_char origin;
+ u_long vltime __attribute__((aligned(8)));
+ u_long pltime __attribute__((aligned(8)));
+ u_long expire __attribute__((aligned(8)));
+ u_int32_t flags __attribute__((aligned(8)));
+ int refcnt;
+ u_short if_index;
+ u_short advrtrs;
+ /* struct sockaddr_in6 advrtr[] */
+};
+#endif /* KERNEL_PRIVATE */
+
struct in6_ondireq {
char ifname[IFNAMSIZ];
struct {
} ndi;
};
+#if !defined(KERNEL_PRIVATE)
struct in6_ndireq {
char ifname[IFNAMSIZ];
struct nd_ifinfo ndi;
};
+#else
+struct in6_ndireq {
+ char ifname[IFNAMSIZ];
+ struct nd_ifinfo_compat ndi;
+};
+#endif /* !KERNEL_PRIVATE */
struct in6_ndifreq {
char ifname[IFNAMSIZ];
u_long ifindex;
};
+#if defined(KERNEL_PRIVATE)
+struct in6_ndifreq_32 {
+ char ifname[IFNAMSIZ];
+ u_int32_t ifindex;
+};
+
+struct in6_ndifreq_64 {
+ char ifname[IFNAMSIZ];
+ u_long ifindex __attribute__((aligned(8)));
+};
+#endif /* KERNEL_PRIVATE */
+
/* Prefix status */
#define NDPRF_ONLINK 0x1
#define NDPRF_DETACHED 0x2
#define ND6_INFINITE_LIFETIME 0xffffffff
-#ifdef KERNEL
-#ifdef __APPLE_API_PRIVATE
+#ifdef KERNEL_PRIVATE
+/*
+ * Protects nd_ifinfo[]
+ */
+__private_extern__ lck_rw_t *nd_if_rwlock;
+
+#define ND_IFINFO(ifp) \
+ ((ifp)->if_index < nd_ifinfo_indexlim ? &nd_ifinfo[(ifp)->if_index] : NULL)
+
+/*
+ * In a more readable form, we derive linkmtu based on:
+ *
+ * if (ND_IFINFO(ifp)->linkmtu && ND_IFINFO(ifp)->linkmtu < ifp->if_mtu)
+ * linkmtu = ND_IFINFO(ifp)->linkmtu;
+ * else if ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < ifp->if_mtu))
+ * linkmtu = ND_IFINFO(ifp)->maxmtu;
+ * else
+ * linkmtu = ifp->if_mtu;
+ */
+#define IN6_LINKMTU(ifp) \
+ (ND_IFINFO(ifp) == NULL ? (ifp)->if_mtu : \
+ ((ND_IFINFO(ifp)->linkmtu && \
+ ND_IFINFO(ifp)->linkmtu < (ifp)->if_mtu) ? ND_IFINFO(ifp)->linkmtu : \
+ ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < (ifp)->if_mtu) ? \
+ ND_IFINFO(ifp)->maxmtu : (ifp)->if_mtu)))
+
/* node constants */
#define MAX_REACHABLE_TIME 3600000 /* msec */
#define REACHABLE_TIME 30000 /* msec */
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 */
+ u_int32_t expire;
+ u_int32_t advint; /* Mobile IPv6 addition (milliseconds) */
+ u_int32_t advint_expire; /* Mobile IPv6 addition */
int advints_lost; /* Mobile IPv6 addition */
struct ifnet *ifp;
};
/* 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 */
+ int ndpr_refcnt; /* reference counter from addresses */
+ int ndpr_usecnt; /* actual use count; prevents free */
};
#define ndpr_next ndpr_entry.le_next
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;
+ u_int32_t prm_vltim;
+ u_int32_t prm_pltime;
+ u_int32_t prm_expire;
+ u_int32_t prm_preferred;
struct in6_prflags prm_flags;
u_short prm_index; /* index for associated ifp */
u_char prm_plen; /* length of prefix in bits */
extern struct nd_drhead nd_defrouter;
extern struct nd_prhead nd_prefix;
extern int nd6_debug;
+extern size_t nd_ifinfo_indexlim;
#define nd6log(x) do { if (nd6_debug) log x; } while (0)
/* 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 *));
+extern void nd6_init(void);
+extern int nd6_ifattach(struct ifnet *);
+extern int nd6_is_addr_neighbor(struct sockaddr_in6 *, struct ifnet *, int);
+extern void nd6_option_init(void *, int, union nd_opts *);
+extern struct nd_opt_hdr *nd6_option(union nd_opts *);
+extern int nd6_options(union nd_opts *);
+extern struct rtentry *nd6_lookup(struct in6_addr *, int, struct ifnet *, int);
+extern void nd6_setmtu(struct ifnet *);
+extern void nd6_timer(void *);
+extern void nd6_purge(struct ifnet *);
+extern void nd6_free(struct rtentry *);
+extern void nd6_nud_hint(struct rtentry *, struct in6_addr *, int);
+extern int nd6_resolve(struct ifnet *, struct rtentry *,
+ struct mbuf *, struct sockaddr *, u_char *);
+extern void nd6_rtrequest(int, struct rtentry *, struct sockaddr *);
+extern int nd6_ioctl(u_long, caddr_t, struct ifnet *);
+extern void nd6_cache_lladdr(struct ifnet *, struct in6_addr *,
+ char *, int, int, int);
+extern int nd6_output(struct ifnet *, struct ifnet *, struct mbuf *,
+ struct sockaddr_in6 *, struct rtentry *, int);
+extern int nd6_storelladdr(struct ifnet *, struct rtentry *, struct mbuf *,
+ struct sockaddr *, u_char *);
+extern int nd6_need_cache(struct ifnet *);
+extern void nd6_drain(void *);
/* 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 *));
+extern void nd6_na_input(struct mbuf *, int, int);
+extern void nd6_na_output(struct ifnet *, const struct in6_addr *,
+ const struct in6_addr *, u_int32_t, int, struct sockaddr *);
+extern void nd6_ns_input(struct mbuf *, int, int);
+extern void nd6_ns_output(struct ifnet *, const struct in6_addr *,
+ const struct in6_addr *, struct llinfo_nd6 *, int, int);
+extern caddr_t nd6_ifptomac(struct ifnet *);
+extern void nd6_dad_start(struct ifaddr *, int *);
+extern void nd6_dad_stop(struct ifaddr *);
+extern void nd6_dad_duplicated(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 */
+extern void nd6_rs_input(struct mbuf *, int, int);
+extern void nd6_ra_input(struct mbuf *, int, int);
+extern void prelist_del(struct nd_prefix *);
+extern void defrouter_addreq(struct nd_defrouter *);
+extern void defrouter_delreq(struct nd_defrouter *, int);
+extern void defrouter_select(void);
+extern void defrtrlist_del(struct nd_defrouter *, int);
+extern void prelist_remove(struct nd_prefix *, int);
+extern int prelist_update(struct nd_prefix *, struct nd_defrouter *,
+ struct mbuf *);
+extern int nd6_prelist_add(struct nd_prefix *, struct nd_defrouter *,
+ struct nd_prefix **);
+extern int nd6_prefix_onlink(struct nd_prefix *, int, int);
+extern int nd6_prefix_offlink(struct nd_prefix *);
+extern void pfxlist_onlink_check(int);
+extern struct nd_defrouter *defrouter_lookup(struct in6_addr *, struct ifnet *);
+extern struct nd_prefix *nd6_prefix_lookup(struct nd_prefix *);
+extern int in6_init_prefix_ltimes(struct nd_prefix *ndpr);
+extern void rt6_flush(struct in6_addr *, struct ifnet *);
+extern int nd6_setdefaultiface(int);
+extern int in6_tmpifadd(const struct in6_ifaddr *, int, int);
+extern void ndpr_hold(struct nd_prefix *, boolean_t);
+extern void ndpr_rele(struct nd_prefix *, boolean_t);
+#endif /* KERNEL_PRIVATE */
+
+#ifdef KERNEL
+/*!
+ @function nd6_lookup_ipv6
+ @discussion This function will check the routing table for a cached
+ neighbor discovery entry or trigger an neighbor discovery query
+ to resolve the IPv6 address to a link-layer address.
+
+ nd entries are stored in the routing table. This function will
+ lookup the IPv6 destination in the routing table. If the
+ destination requires forwarding to a gateway, the route of the
+ gateway will be looked up. The route entry is inspected to
+ determine if the link layer destination address is known. If
+ unknown, neighbor discovery will be used to resolve the entry.
+ @param interface The interface the packet is being sent on.
+ @param ip6_dest The IPv6 destination of the packet.
+ @param ll_dest On output, the link-layer destination.
+ @param ll_dest_len The length of the buffer for ll_dest.
+ @param hint Any routing hint passed down from the protocol.
+ @param packet The packet being transmitted.
+ @result May return an error such as EHOSTDOWN or ENETUNREACH. If
+ this function returns EJUSTRETURN, the packet has been queued
+ and will be sent when the address is resolved. If any other
+ value is returned, the caller is responsible for disposing of
+ the packet.
+ */
+extern errno_t nd6_lookup_ipv6(ifnet_t interface,
+ const struct sockaddr_in6 *ip6_dest, struct sockaddr_dl *ll_dest,
+ size_t ll_dest_len, route_t hint, mbuf_t packet);
+
+#endif /* KERNEL */
#endif /* _NETINET6_ND6_H_ */
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